Repository: alibaba/arthas Branch: master Commit: 7edd52904d31 Files: 1424 Total size: 5.6 MB Directory structure: gitextract_dn9hadax/ ├── .github/ │ ├── ISSUE_TEMPLATE/ │ │ ├── bug-report--cn-.md │ │ └── bug-report--en-.md │ └── workflows/ │ ├── auto-prettier.yaml │ ├── build-async-profiler.yml │ ├── build-vmtool.yaml │ ├── codeql-analysis.yml │ ├── push-docker.yaml │ ├── release.yaml │ ├── sync-to-gitee.yaml │ ├── test.yaml │ └── update-doc.yaml ├── .gitignore ├── .mvn/ │ └── wrapper/ │ └── maven-wrapper.properties ├── AGENTS.md ├── CONTRIBUTING.md ├── Dockerfile ├── Dockerfile-No-Jdk ├── LICENSE ├── NOTICE ├── README.md ├── README_CN.md ├── README_EN.md ├── TODO.md ├── USERS.md ├── agent/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ ├── agent/ │ │ └── ArthasClassloader.java │ └── agent334/ │ └── AgentBootstrap.java ├── arthas-agent-attach/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ └── agent/ │ └── attach/ │ ├── ArthasAgent.java │ └── AttachArthasClassloader.java ├── arthas-mcp-integration-test/ │ ├── README.md │ ├── pom.xml │ └── src/ │ └── test/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ └── mcp/ │ └── it/ │ ├── ArthasMcpJavaSdkIT.java │ ├── ArthasMcpToolsIT.java │ └── TargetJvmApp.java ├── arthas-mcp-server/ │ ├── README.md │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ └── mcp/ │ └── server/ │ ├── CommandExecutor.java │ ├── protocol/ │ │ ├── config/ │ │ │ └── McpServerProperties.java │ │ ├── server/ │ │ │ ├── DefaultMcpStatelessServerHandler.java │ │ │ ├── DefaultMcpTransportContext.java │ │ │ ├── McpInitRequestHandler.java │ │ │ ├── McpNettyServer.java │ │ │ ├── McpNettyServerExchange.java │ │ │ ├── McpNotificationHandler.java │ │ │ ├── McpRequestHandler.java │ │ │ ├── McpServer.java │ │ │ ├── McpServerFeatures.java │ │ │ ├── McpStatelessNettyServer.java │ │ │ ├── McpStatelessNotificationHandler.java │ │ │ ├── McpStatelessRequestHandler.java │ │ │ ├── McpStatelessServerFeatures.java │ │ │ ├── McpStatelessServerHandler.java │ │ │ ├── McpTransportContext.java │ │ │ ├── McpTransportContextExtractor.java │ │ │ ├── handler/ │ │ │ │ ├── McpHttpRequestHandler.java │ │ │ │ ├── McpStatelessHttpRequestHandler.java │ │ │ │ └── McpStreamableHttpRequestHandler.java │ │ │ ├── store/ │ │ │ │ └── InMemoryEventStore.java │ │ │ └── transport/ │ │ │ ├── NettyStatelessServerTransport.java │ │ │ └── NettyStreamableServerTransportProvider.java │ │ └── spec/ │ │ ├── DefaultMcpStreamableServerSessionFactory.java │ │ ├── EventStore.java │ │ ├── HttpHeaders.java │ │ ├── McpError.java │ │ ├── McpSchema.java │ │ ├── McpServerTransport.java │ │ ├── McpServerTransportProvider.java │ │ ├── McpSession.java │ │ ├── McpStatelessServerTransport.java │ │ ├── McpStreamableServerSession.java │ │ ├── McpStreamableServerTransport.java │ │ ├── McpStreamableServerTransportProvider.java │ │ ├── McpTransport.java │ │ ├── MissingMcpTransportSession.java │ │ └── ProtocolVersions.java │ ├── session/ │ │ ├── ArthasCommandContext.java │ │ └── ArthasCommandSessionManager.java │ ├── tool/ │ │ ├── DefaultToolCallback.java │ │ ├── DefaultToolCallbackProvider.java │ │ ├── ToolCallback.java │ │ ├── ToolCallbackProvider.java │ │ ├── ToolContext.java │ │ ├── annotation/ │ │ │ ├── Tool.java │ │ │ └── ToolParam.java │ │ ├── definition/ │ │ │ ├── ToolDefinition.java │ │ │ └── ToolDefinitions.java │ │ ├── execution/ │ │ │ ├── DefaultToolCallResultConverter.java │ │ │ ├── DefaultToolExecutionExceptionProcessor.java │ │ │ ├── ToolCallResultConverter.java │ │ │ ├── ToolExecutionException.java │ │ │ └── ToolExecutionExceptionProcessor.java │ │ └── util/ │ │ └── JsonSchemaGenerator.java │ └── util/ │ ├── Assert.java │ ├── JsonParser.java │ ├── KeepAliveScheduler.java │ ├── McpAuthExtractor.java │ └── Utils.java ├── arthas-model/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ └── core/ │ └── command/ │ └── model/ │ ├── CommandRequestModel.java │ ├── EnhancerAffectVO.java │ ├── EnhancerModel.java │ ├── InputStatus.java │ ├── InputStatusModel.java │ ├── MessageModel.java │ ├── ObjectVO.java │ ├── ResultModel.java │ ├── SessionModel.java │ ├── StatusModel.java │ └── WelcomeModel.java ├── arthas-spring-boot-starter/ │ ├── pom.xml │ └── src/ │ ├── it/ │ │ ├── arthas-spring-boot-starter-example/ │ │ │ ├── invoker.properties │ │ │ ├── pom.xml │ │ │ ├── src/ │ │ │ │ ├── main/ │ │ │ │ │ ├── java/ │ │ │ │ │ │ └── com/ │ │ │ │ │ │ └── example/ │ │ │ │ │ │ └── arthasspringbootstarterexample/ │ │ │ │ │ │ └── ArthasSpringBootStarterExampleApplication.java │ │ │ │ │ └── resources/ │ │ │ │ │ └── application.properties │ │ │ │ └── test/ │ │ │ │ └── java/ │ │ │ │ └── com/ │ │ │ │ └── example/ │ │ │ │ └── arthasspringbootstarterexample/ │ │ │ │ └── ArthasSpringBootStarterExampleApplicationTests.java │ │ │ └── verify.groovy │ │ ├── arthas-spring-boot3-starter-example/ │ │ │ ├── invoker.properties │ │ │ ├── pom.xml │ │ │ ├── src/ │ │ │ │ ├── main/ │ │ │ │ │ ├── java/ │ │ │ │ │ │ └── com/ │ │ │ │ │ │ └── example/ │ │ │ │ │ │ └── arthasspringboot3starterexample/ │ │ │ │ │ │ └── ArthasSpringBoot3StarterExampleApplication.java │ │ │ │ │ └── resources/ │ │ │ │ │ └── application.properties │ │ │ │ └── test/ │ │ │ │ └── java/ │ │ │ │ └── com/ │ │ │ │ └── example/ │ │ │ │ └── arthasspringboot3starterexample/ │ │ │ │ └── ArthasSpringBoot3StarterExampleApplicationTests.java │ │ │ └── verify.groovy │ │ └── settings.xml │ ├── main/ │ │ ├── java/ │ │ │ └── com/ │ │ │ └── alibaba/ │ │ │ └── arthas/ │ │ │ └── spring/ │ │ │ ├── ArthasConfiguration.java │ │ │ ├── ArthasProperties.java │ │ │ ├── StringUtils.java │ │ │ └── endpoints/ │ │ │ ├── ArthasEndPoint.java │ │ │ └── ArthasEndPointAutoConfiguration.java │ │ └── resources/ │ │ └── META-INF/ │ │ ├── spring/ │ │ │ └── org.springframework.boot.autoconfigure.AutoConfiguration.imports │ │ ├── spring.factories │ │ └── spring.provides │ └── test/ │ └── java/ │ └── com/ │ └── alibaba/ │ └── arthas/ │ └── spring/ │ └── StringUtilsTest.java ├── arthas-vmtool/ │ ├── README.md │ ├── pom.xml │ └── src/ │ ├── main/ │ │ ├── java/ │ │ │ └── arthas/ │ │ │ ├── VmTool.java │ │ │ ├── VmToolMXBean.java │ │ │ └── package-info.java │ │ └── native/ │ │ └── src/ │ │ ├── heap_analyzer.c │ │ ├── heap_analyzer.h │ │ └── jni-library.cpp │ └── test/ │ └── java/ │ └── arthas/ │ └── VmToolTest.java ├── as-package.sh ├── batch.as ├── bin/ │ ├── as-service.bat │ ├── as.bat │ ├── as.sh │ ├── install-local.sh │ ├── install.sh │ └── jps.sh ├── boot/ │ ├── pom.xml │ └── src/ │ ├── main/ │ │ └── java/ │ │ └── com/ │ │ └── taobao/ │ │ └── arthas/ │ │ └── boot/ │ │ ├── Bootstrap.java │ │ ├── DownloadUtils.java │ │ └── ProcessUtils.java │ └── test/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ └── boot/ │ └── DownloadUtilsTest.java ├── client/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ ├── com/ │ │ └── taobao/ │ │ └── arthas/ │ │ └── client/ │ │ ├── IOUtil.java │ │ └── TelnetConsole.java │ └── org/ │ └── apache/ │ └── commons/ │ └── net/ │ ├── DatagramSocketClient.java │ ├── DatagramSocketFactory.java │ ├── DefaultDatagramSocketFactory.java │ ├── DefaultSocketFactory.java │ ├── MalformedServerReplyException.java │ ├── PrintCommandListener.java │ ├── ProtocolCommandEvent.java │ ├── ProtocolCommandListener.java │ ├── ProtocolCommandSupport.java │ ├── SocketClient.java │ ├── telnet/ │ │ ├── EchoOptionHandler.java │ │ ├── InvalidTelnetOptionException.java │ │ ├── SimpleOptionHandler.java │ │ ├── SuppressGAOptionHandler.java │ │ ├── Telnet.java │ │ ├── TelnetClient.java │ │ ├── TelnetCommand.java │ │ ├── TelnetInputListener.java │ │ ├── TelnetInputStream.java │ │ ├── TelnetNotificationHandler.java │ │ ├── TelnetOption.java │ │ ├── TelnetOptionHandler.java │ │ ├── TelnetOutputStream.java │ │ ├── TerminalTypeOptionHandler.java │ │ └── WindowSizeOptionHandler.java │ └── util/ │ └── ListenerList.java ├── common/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── taobao/ │ └── arthas/ │ └── common/ │ ├── AnsiLog.java │ ├── ArthasConstants.java │ ├── ExecutingCommand.java │ ├── FileUtils.java │ ├── IOUtils.java │ ├── JavaVersionUtils.java │ ├── OSUtils.java │ ├── Pair.java │ ├── PidUtils.java │ ├── PlatformEnum.java │ ├── ReflectException.java │ ├── ReflectUtils.java │ ├── SocketUtils.java │ ├── UnsafeUtils.java │ ├── UsageRender.java │ ├── VmToolUtils.java │ └── concurrent/ │ ├── ConcurrentWeakKeyHashMap.java │ └── ReusableIterator.java ├── core/ │ ├── pom.xml │ └── src/ │ ├── main/ │ │ ├── java/ │ │ │ ├── arthas.properties │ │ │ ├── com/ │ │ │ │ └── taobao/ │ │ │ │ └── arthas/ │ │ │ │ └── core/ │ │ │ │ ├── Arthas.java │ │ │ │ ├── GlobalOptions.java │ │ │ │ ├── Option.java │ │ │ │ ├── advisor/ │ │ │ │ │ ├── AccessPoint.java │ │ │ │ │ ├── Advice.java │ │ │ │ │ ├── AdviceListener.java │ │ │ │ │ ├── AdviceListenerAdapter.java │ │ │ │ │ ├── AdviceListenerManager.java │ │ │ │ │ ├── AdviceWeaver.java │ │ │ │ │ ├── ArthasMethod.java │ │ │ │ │ ├── Enhancer.java │ │ │ │ │ ├── InvokeTraceable.java │ │ │ │ │ ├── SpyImpl.java │ │ │ │ │ ├── SpyInterceptors.java │ │ │ │ │ └── TransformerManager.java │ │ │ │ ├── command/ │ │ │ │ │ ├── BuiltinCommandPack.java │ │ │ │ │ ├── CommandExecutorImpl.java │ │ │ │ │ ├── Constants.java │ │ │ │ │ ├── ScriptSupportCommand.java │ │ │ │ │ ├── basic1000/ │ │ │ │ │ │ ├── AuthCommand.java │ │ │ │ │ │ ├── Base64Command.java │ │ │ │ │ │ ├── CatCommand.java │ │ │ │ │ │ ├── ClsCommand.java │ │ │ │ │ │ ├── EchoCommand.java │ │ │ │ │ │ ├── GrepCommand.java │ │ │ │ │ │ ├── HelpCommand.java │ │ │ │ │ │ ├── HistoryCommand.java │ │ │ │ │ │ ├── JFRCommand.java │ │ │ │ │ │ ├── KeymapCommand.java │ │ │ │ │ │ ├── OptionsCommand.java │ │ │ │ │ │ ├── PwdCommand.java │ │ │ │ │ │ ├── ResetCommand.java │ │ │ │ │ │ ├── SessionCommand.java │ │ │ │ │ │ ├── StopCommand.java │ │ │ │ │ │ ├── SystemEnvCommand.java │ │ │ │ │ │ ├── SystemPropertyCommand.java │ │ │ │ │ │ ├── TeeCommand.java │ │ │ │ │ │ ├── VMOptionCommand.java │ │ │ │ │ │ └── VersionCommand.java │ │ │ │ │ ├── express/ │ │ │ │ │ │ ├── ArthasObjectPropertyAccessor.java │ │ │ │ │ │ ├── ClassLoaderClassResolver.java │ │ │ │ │ │ ├── CustomClassResolver.java │ │ │ │ │ │ ├── DefaultMemberAccess.java │ │ │ │ │ │ ├── Express.java │ │ │ │ │ │ ├── ExpressException.java │ │ │ │ │ │ ├── ExpressFactory.java │ │ │ │ │ │ └── OgnlExpress.java │ │ │ │ │ ├── hidden/ │ │ │ │ │ │ ├── JulyCommand.java │ │ │ │ │ │ └── ThanksCommand.java │ │ │ │ │ ├── klass100/ │ │ │ │ │ │ ├── ClassDumpTransformer.java │ │ │ │ │ │ ├── ClassLoaderCommand.java │ │ │ │ │ │ ├── DumpClassCommand.java │ │ │ │ │ │ ├── GetStaticCommand.java │ │ │ │ │ │ ├── JadCommand.java │ │ │ │ │ │ ├── MemoryCompilerCommand.java │ │ │ │ │ │ ├── OgnlCommand.java │ │ │ │ │ │ ├── RedefineCommand.java │ │ │ │ │ │ ├── RetransformCommand.java │ │ │ │ │ │ ├── SearchClassCommand.java │ │ │ │ │ │ └── SearchMethodCommand.java │ │ │ │ │ ├── logger/ │ │ │ │ │ │ ├── AsmRenameUtil.java │ │ │ │ │ │ ├── Log4j2Helper.java │ │ │ │ │ │ ├── Log4jHelper.java │ │ │ │ │ │ ├── LogbackHelper.java │ │ │ │ │ │ ├── LoggerCommand.java │ │ │ │ │ │ └── LoggerHelper.java │ │ │ │ │ ├── model/ │ │ │ │ │ │ ├── ArgumentVO.java │ │ │ │ │ │ ├── Base64Model.java │ │ │ │ │ │ ├── BlockingLockInfo.java │ │ │ │ │ │ ├── BusyThreadInfo.java │ │ │ │ │ │ ├── CatModel.java │ │ │ │ │ │ ├── ChangeResultVO.java │ │ │ │ │ │ ├── ClassDetailVO.java │ │ │ │ │ │ ├── ClassLoaderModel.java │ │ │ │ │ │ ├── ClassLoaderVO.java │ │ │ │ │ │ ├── ClassSetVO.java │ │ │ │ │ │ ├── ClassVO.java │ │ │ │ │ │ ├── CommandOptionVO.java │ │ │ │ │ │ ├── CommandVO.java │ │ │ │ │ │ ├── Countable.java │ │ │ │ │ │ ├── DashboardModel.java │ │ │ │ │ │ ├── DumpClassModel.java │ │ │ │ │ │ ├── DumpClassVO.java │ │ │ │ │ │ ├── EchoModel.java │ │ │ │ │ │ ├── EnhancerModelFactory.java │ │ │ │ │ │ ├── FieldVO.java │ │ │ │ │ │ ├── GcInfoVO.java │ │ │ │ │ │ ├── GetStaticModel.java │ │ │ │ │ │ ├── HeapDumpModel.java │ │ │ │ │ │ ├── HelpModel.java │ │ │ │ │ │ ├── HistoryModel.java │ │ │ │ │ │ ├── JFRModel.java │ │ │ │ │ │ ├── JadModel.java │ │ │ │ │ │ ├── JvmItemVO.java │ │ │ │ │ │ ├── JvmModel.java │ │ │ │ │ │ ├── LoggerModel.java │ │ │ │ │ │ ├── MBeanAttributeVO.java │ │ │ │ │ │ ├── MBeanModel.java │ │ │ │ │ │ ├── MemoryCompilerModel.java │ │ │ │ │ │ ├── MemoryEntryVO.java │ │ │ │ │ │ ├── MemoryModel.java │ │ │ │ │ │ ├── MethodNode.java │ │ │ │ │ │ ├── MethodVO.java │ │ │ │ │ │ ├── MonitorModel.java │ │ │ │ │ │ ├── OgnlModel.java │ │ │ │ │ │ ├── OptionVO.java │ │ │ │ │ │ ├── OptionsModel.java │ │ │ │ │ │ ├── PerfCounterModel.java │ │ │ │ │ │ ├── PerfCounterVO.java │ │ │ │ │ │ ├── ProfilerModel.java │ │ │ │ │ │ ├── PwdModel.java │ │ │ │ │ │ ├── RedefineModel.java │ │ │ │ │ │ ├── ResetModel.java │ │ │ │ │ │ ├── RetransformModel.java │ │ │ │ │ │ ├── RowAffectModel.java │ │ │ │ │ │ ├── RuntimeInfoVO.java │ │ │ │ │ │ ├── SearchClassModel.java │ │ │ │ │ │ ├── SearchMethodModel.java │ │ │ │ │ │ ├── ShutdownModel.java │ │ │ │ │ │ ├── StackModel.java │ │ │ │ │ │ ├── SystemEnvModel.java │ │ │ │ │ │ ├── SystemPropertyModel.java │ │ │ │ │ │ ├── ThreadModel.java │ │ │ │ │ │ ├── ThreadNode.java │ │ │ │ │ │ ├── ThreadVO.java │ │ │ │ │ │ ├── ThrowNode.java │ │ │ │ │ │ ├── TimeFragmentVO.java │ │ │ │ │ │ ├── TimeTunnelModel.java │ │ │ │ │ │ ├── TomcatInfoVO.java │ │ │ │ │ │ ├── TraceModel.java │ │ │ │ │ │ ├── TraceNode.java │ │ │ │ │ │ ├── TraceTree.java │ │ │ │ │ │ ├── VMOptionModel.java │ │ │ │ │ │ ├── VersionModel.java │ │ │ │ │ │ ├── VmToolModel.java │ │ │ │ │ │ └── WatchModel.java │ │ │ │ │ ├── monitor200/ │ │ │ │ │ │ ├── AbstractTraceAdviceListener.java │ │ │ │ │ │ ├── DashboardCommand.java │ │ │ │ │ │ ├── DashboardInterruptHandler.java │ │ │ │ │ │ ├── EnhancerCommand.java │ │ │ │ │ │ ├── GroovyAdviceListener.java │ │ │ │ │ │ ├── GroovyScriptCommand.java │ │ │ │ │ │ ├── HeapDumpCommand.java │ │ │ │ │ │ ├── JvmCommand.java │ │ │ │ │ │ ├── MBeanCommand.java │ │ │ │ │ │ ├── MemoryCommand.java │ │ │ │ │ │ ├── MonitorAdviceListener.java │ │ │ │ │ │ ├── MonitorCommand.java │ │ │ │ │ │ ├── MonitorData.java │ │ │ │ │ │ ├── PathTraceAdviceListener.java │ │ │ │ │ │ ├── PerfCounterCommand.java │ │ │ │ │ │ ├── ProfilerCommand.java │ │ │ │ │ │ ├── ProfilerMarkdown.java │ │ │ │ │ │ ├── StackAdviceListener.java │ │ │ │ │ │ ├── StackCommand.java │ │ │ │ │ │ ├── ThreadCommand.java │ │ │ │ │ │ ├── ThreadSampler.java │ │ │ │ │ │ ├── TimeFragment.java │ │ │ │ │ │ ├── TimeTunnelAdviceListener.java │ │ │ │ │ │ ├── TimeTunnelCommand.java │ │ │ │ │ │ ├── TimeTunnelTable.java │ │ │ │ │ │ ├── TraceAdviceListener.java │ │ │ │ │ │ ├── TraceCommand.java │ │ │ │ │ │ ├── TraceEntity.java │ │ │ │ │ │ ├── VmToolCommand.java │ │ │ │ │ │ ├── WatchAdviceListener.java │ │ │ │ │ │ └── WatchCommand.java │ │ │ │ │ └── view/ │ │ │ │ │ ├── Base64View.java │ │ │ │ │ ├── CatView.java │ │ │ │ │ ├── ClassLoaderView.java │ │ │ │ │ ├── DashboardView.java │ │ │ │ │ ├── DumpClassView.java │ │ │ │ │ ├── EchoView.java │ │ │ │ │ ├── EnhancerView.java │ │ │ │ │ ├── GetStaticView.java │ │ │ │ │ ├── HelpView.java │ │ │ │ │ ├── JFRView.java │ │ │ │ │ ├── JadView.java │ │ │ │ │ ├── JvmView.java │ │ │ │ │ ├── LoggerView.java │ │ │ │ │ ├── MBeanView.java │ │ │ │ │ ├── MemoryCompilerView.java │ │ │ │ │ ├── MemoryView.java │ │ │ │ │ ├── MessageView.java │ │ │ │ │ ├── MonitorView.java │ │ │ │ │ ├── OgnlView.java │ │ │ │ │ ├── OptionsView.java │ │ │ │ │ ├── PerfCounterView.java │ │ │ │ │ ├── ProfilerView.java │ │ │ │ │ ├── PwdView.java │ │ │ │ │ ├── RedefineView.java │ │ │ │ │ ├── ResetView.java │ │ │ │ │ ├── ResultView.java │ │ │ │ │ ├── ResultViewResolver.java │ │ │ │ │ ├── RetransformView.java │ │ │ │ │ ├── RowAffectView.java │ │ │ │ │ ├── SearchClassView.java │ │ │ │ │ ├── SearchMethodView.java │ │ │ │ │ ├── SessionView.java │ │ │ │ │ ├── ShutdownView.java │ │ │ │ │ ├── StackView.java │ │ │ │ │ ├── StatusView.java │ │ │ │ │ ├── SystemEnvView.java │ │ │ │ │ ├── SystemPropertyView.java │ │ │ │ │ ├── ThreadView.java │ │ │ │ │ ├── TimeTunnelView.java │ │ │ │ │ ├── TraceView.java │ │ │ │ │ ├── VMOptionView.java │ │ │ │ │ ├── VersionView.java │ │ │ │ │ ├── ViewRenderUtil.java │ │ │ │ │ ├── VmToolView.java │ │ │ │ │ └── WatchView.java │ │ │ │ ├── config/ │ │ │ │ │ ├── BinderUtils.java │ │ │ │ │ ├── Config.java │ │ │ │ │ ├── Configure.java │ │ │ │ │ ├── FeatureCodec.java │ │ │ │ │ └── NestedConfig.java │ │ │ │ ├── distribution/ │ │ │ │ │ ├── CompositeResultDistributor.java │ │ │ │ │ ├── DistributorOptions.java │ │ │ │ │ ├── PackingResultDistributor.java │ │ │ │ │ ├── ResultConsumer.java │ │ │ │ │ ├── ResultConsumerHelper.java │ │ │ │ │ ├── ResultDistributor.java │ │ │ │ │ ├── SharingResultDistributor.java │ │ │ │ │ └── impl/ │ │ │ │ │ ├── CompositeResultDistributorImpl.java │ │ │ │ │ ├── PackingResultDistributorImpl.java │ │ │ │ │ ├── ResultConsumerImpl.java │ │ │ │ │ ├── SharingResultDistributorImpl.java │ │ │ │ │ └── TermResultDistributorImpl.java │ │ │ │ ├── env/ │ │ │ │ │ ├── AbstractPropertyResolver.java │ │ │ │ │ ├── ArthasEnvironment.java │ │ │ │ │ ├── ConfigurablePropertyResolver.java │ │ │ │ │ ├── ConversionService.java │ │ │ │ │ ├── EnumerablePropertySource.java │ │ │ │ │ ├── Environment.java │ │ │ │ │ ├── MapPropertySource.java │ │ │ │ │ ├── MissingRequiredPropertiesException.java │ │ │ │ │ ├── MutablePropertySources.java │ │ │ │ │ ├── PropertiesPropertySource.java │ │ │ │ │ ├── PropertyPlaceholderHelper.java │ │ │ │ │ ├── PropertyResolver.java │ │ │ │ │ ├── PropertySource.java │ │ │ │ │ ├── PropertySources.java │ │ │ │ │ ├── PropertySourcesPropertyResolver.java │ │ │ │ │ ├── ReadOnlySystemAttributesMap.java │ │ │ │ │ ├── SystemEnvironmentPropertySource.java │ │ │ │ │ ├── SystemPropertyUtils.java │ │ │ │ │ ├── convert/ │ │ │ │ │ │ ├── ConfigurableConversionService.java │ │ │ │ │ │ ├── Converter.java │ │ │ │ │ │ ├── ConvertiblePair.java │ │ │ │ │ │ ├── DefaultConversionService.java │ │ │ │ │ │ ├── ObjectToStringConverter.java │ │ │ │ │ │ ├── StringToArrayConverter.java │ │ │ │ │ │ ├── StringToBooleanConverter.java │ │ │ │ │ │ ├── StringToEnumConverter.java │ │ │ │ │ │ ├── StringToInetAddressConverter.java │ │ │ │ │ │ ├── StringToIntegerConverter.java │ │ │ │ │ │ └── StringToLongConverter.java │ │ │ │ │ └── package-info.java │ │ │ │ ├── mcp/ │ │ │ │ │ ├── ArthasMcpBootstrap.java │ │ │ │ │ ├── ArthasMcpServer.java │ │ │ │ │ ├── tool/ │ │ │ │ │ │ ├── function/ │ │ │ │ │ │ │ ├── AbstractArthasTool.java │ │ │ │ │ │ │ ├── StreamableToolUtils.java │ │ │ │ │ │ │ ├── basic1000/ │ │ │ │ │ │ │ │ ├── OptionsTool.java │ │ │ │ │ │ │ │ ├── StopTool.java │ │ │ │ │ │ │ │ └── ViewFileTool.java │ │ │ │ │ │ │ ├── jvm300/ │ │ │ │ │ │ │ │ ├── DashboardTool.java │ │ │ │ │ │ │ │ ├── GetStaticTool.java │ │ │ │ │ │ │ │ ├── HeapdumpTool.java │ │ │ │ │ │ │ │ ├── JvmTool.java │ │ │ │ │ │ │ │ ├── MBeanTool.java │ │ │ │ │ │ │ │ ├── MemoryTool.java │ │ │ │ │ │ │ │ ├── OgnlTool.java │ │ │ │ │ │ │ │ ├── PerfCounterTool.java │ │ │ │ │ │ │ │ ├── SysEnvTool.java │ │ │ │ │ │ │ │ ├── SysPropTool.java │ │ │ │ │ │ │ │ ├── ThreadTool.java │ │ │ │ │ │ │ │ ├── VMOptionTool.java │ │ │ │ │ │ │ │ └── VMToolTool.java │ │ │ │ │ │ │ ├── klass100/ │ │ │ │ │ │ │ │ ├── ClassLoaderTool.java │ │ │ │ │ │ │ │ ├── DumpClassTool.java │ │ │ │ │ │ │ │ ├── JadTool.java │ │ │ │ │ │ │ │ ├── MemoryCompilerTool.java │ │ │ │ │ │ │ │ ├── RedefineTool.java │ │ │ │ │ │ │ │ ├── RetransformTool.java │ │ │ │ │ │ │ │ ├── SearchClassTool.java │ │ │ │ │ │ │ │ └── SearchMethodTool.java │ │ │ │ │ │ │ └── monitor200/ │ │ │ │ │ │ │ ├── MonitorTool.java │ │ │ │ │ │ │ ├── ProfilerTool.java │ │ │ │ │ │ │ ├── StackTool.java │ │ │ │ │ │ │ ├── TimeTunnelTool.java │ │ │ │ │ │ │ ├── TraceTool.java │ │ │ │ │ │ │ └── WatchTool.java │ │ │ │ │ │ └── util/ │ │ │ │ │ │ └── McpToolUtils.java │ │ │ │ │ └── util/ │ │ │ │ │ ├── McpAuthExtractor.java │ │ │ │ │ └── McpObjectVOFilter.java │ │ │ │ ├── security/ │ │ │ │ │ ├── AuthUtils.java │ │ │ │ │ ├── BasicPrincipal.java │ │ │ │ │ ├── BearerPrincipal.java │ │ │ │ │ ├── LocalConnectionPrincipal.java │ │ │ │ │ ├── SecurityAuthenticator.java │ │ │ │ │ └── SecurityAuthenticatorImpl.java │ │ │ │ ├── server/ │ │ │ │ │ ├── ArthasBootstrap.java │ │ │ │ │ └── instrument/ │ │ │ │ │ └── ClassLoader_Instrument.java │ │ │ │ ├── shell/ │ │ │ │ │ ├── Shell.java │ │ │ │ │ ├── ShellServer.java │ │ │ │ │ ├── ShellServerOptions.java │ │ │ │ │ ├── cli/ │ │ │ │ │ │ ├── CliToken.java │ │ │ │ │ │ ├── CliTokens.java │ │ │ │ │ │ ├── Completion.java │ │ │ │ │ │ ├── CompletionUtils.java │ │ │ │ │ │ ├── OptionCompleteHandler.java │ │ │ │ │ │ └── impl/ │ │ │ │ │ │ └── CliTokenImpl.java │ │ │ │ │ ├── command/ │ │ │ │ │ │ ├── AnnotatedCommand.java │ │ │ │ │ │ ├── Command.java │ │ │ │ │ │ ├── CommandBuilder.java │ │ │ │ │ │ ├── CommandProcess.java │ │ │ │ │ │ ├── CommandRegistry.java │ │ │ │ │ │ ├── CommandResolver.java │ │ │ │ │ │ ├── ExitStatus.java │ │ │ │ │ │ ├── impl/ │ │ │ │ │ │ │ ├── AnnotatedCommandImpl.java │ │ │ │ │ │ │ └── CommandBuilderImpl.java │ │ │ │ │ │ └── internal/ │ │ │ │ │ │ ├── CloseFunction.java │ │ │ │ │ │ ├── GrepHandler.java │ │ │ │ │ │ ├── PlainTextHandler.java │ │ │ │ │ │ ├── RedirectHandler.java │ │ │ │ │ │ ├── StatisticsFunction.java │ │ │ │ │ │ ├── StdoutHandler.java │ │ │ │ │ │ ├── TeeHandler.java │ │ │ │ │ │ ├── TermHandler.java │ │ │ │ │ │ └── WordCountHandler.java │ │ │ │ │ ├── future/ │ │ │ │ │ │ └── Future.java │ │ │ │ │ ├── handlers/ │ │ │ │ │ │ ├── BindHandler.java │ │ │ │ │ │ ├── Handler.java │ │ │ │ │ │ ├── NoOpHandler.java │ │ │ │ │ │ ├── command/ │ │ │ │ │ │ │ └── CommandInterruptHandler.java │ │ │ │ │ │ ├── server/ │ │ │ │ │ │ │ ├── SessionClosedHandler.java │ │ │ │ │ │ │ ├── SessionsClosedHandler.java │ │ │ │ │ │ │ ├── TermServerListenHandler.java │ │ │ │ │ │ │ └── TermServerTermHandler.java │ │ │ │ │ │ ├── shell/ │ │ │ │ │ │ │ ├── CloseHandler.java │ │ │ │ │ │ │ ├── CommandManagerCompletionHandler.java │ │ │ │ │ │ │ ├── FutureHandler.java │ │ │ │ │ │ │ ├── InterruptHandler.java │ │ │ │ │ │ │ ├── QExitHandler.java │ │ │ │ │ │ │ ├── ShellForegroundUpdateHandler.java │ │ │ │ │ │ │ ├── ShellLineHandler.java │ │ │ │ │ │ │ └── SuspendHandler.java │ │ │ │ │ │ └── term/ │ │ │ │ │ │ ├── CloseHandlerWrapper.java │ │ │ │ │ │ ├── DefaultTermStdinHandler.java │ │ │ │ │ │ ├── EventHandler.java │ │ │ │ │ │ ├── RequestHandler.java │ │ │ │ │ │ ├── SizeHandlerWrapper.java │ │ │ │ │ │ └── StdinHandlerWrapper.java │ │ │ │ │ ├── history/ │ │ │ │ │ │ ├── HistoryManager.java │ │ │ │ │ │ └── impl/ │ │ │ │ │ │ └── HistoryManagerImpl.java │ │ │ │ │ ├── impl/ │ │ │ │ │ │ ├── BuiltinCommandResolver.java │ │ │ │ │ │ ├── ShellImpl.java │ │ │ │ │ │ └── ShellServerImpl.java │ │ │ │ │ ├── session/ │ │ │ │ │ │ ├── Session.java │ │ │ │ │ │ ├── SessionManager.java │ │ │ │ │ │ └── impl/ │ │ │ │ │ │ ├── SessionImpl.java │ │ │ │ │ │ └── SessionManagerImpl.java │ │ │ │ │ ├── system/ │ │ │ │ │ │ ├── ExecStatus.java │ │ │ │ │ │ ├── Job.java │ │ │ │ │ │ ├── JobController.java │ │ │ │ │ │ ├── JobListener.java │ │ │ │ │ │ ├── Process.java │ │ │ │ │ │ ├── ProcessAware.java │ │ │ │ │ │ └── impl/ │ │ │ │ │ │ ├── CommandCompletion.java │ │ │ │ │ │ ├── GlobalJobControllerImpl.java │ │ │ │ │ │ ├── InternalCommandManager.java │ │ │ │ │ │ ├── JobControllerImpl.java │ │ │ │ │ │ ├── JobImpl.java │ │ │ │ │ │ └── ProcessImpl.java │ │ │ │ │ └── term/ │ │ │ │ │ ├── SignalHandler.java │ │ │ │ │ ├── Term.java │ │ │ │ │ ├── TermServer.java │ │ │ │ │ ├── Tty.java │ │ │ │ │ └── impl/ │ │ │ │ │ ├── CompletionAdaptor.java │ │ │ │ │ ├── CompletionHandler.java │ │ │ │ │ ├── FunctionInvocationHandler.java │ │ │ │ │ ├── Helper.java │ │ │ │ │ ├── HttpTermServer.java │ │ │ │ │ ├── TelnetTermServer.java │ │ │ │ │ ├── TermImpl.java │ │ │ │ │ ├── http/ │ │ │ │ │ │ ├── BasicHttpAuthenticatorHandler.java │ │ │ │ │ │ ├── DirectoryBrowser.java │ │ │ │ │ │ ├── ExtHttpTtyConnection.java │ │ │ │ │ │ ├── HttpRequestHandler.java │ │ │ │ │ │ ├── LocalTtyServerInitializer.java │ │ │ │ │ │ ├── NettyWebsocketTtyBootstrap.java │ │ │ │ │ │ ├── TtyServerInitializer.java │ │ │ │ │ │ ├── TtyWebSocketFrameHandler.java │ │ │ │ │ │ ├── api/ │ │ │ │ │ │ │ ├── ApiAction.java │ │ │ │ │ │ │ ├── ApiException.java │ │ │ │ │ │ │ ├── ApiRequest.java │ │ │ │ │ │ │ ├── ApiResponse.java │ │ │ │ │ │ │ ├── ApiState.java │ │ │ │ │ │ │ ├── HttpApiHandler.java │ │ │ │ │ │ │ └── ObjectVOFilter.java │ │ │ │ │ │ ├── package-info.java │ │ │ │ │ │ └── session/ │ │ │ │ │ │ ├── HttpSession.java │ │ │ │ │ │ ├── HttpSessionManager.java │ │ │ │ │ │ ├── LRUCache.java │ │ │ │ │ │ └── SimpleHttpSession.java │ │ │ │ │ └── httptelnet/ │ │ │ │ │ ├── HttpTelnetTermServer.java │ │ │ │ │ ├── NettyHttpTelnetBootstrap.java │ │ │ │ │ ├── NettyHttpTelnetTtyBootstrap.java │ │ │ │ │ └── ProtocolDetectHandler.java │ │ │ │ ├── util/ │ │ │ │ │ ├── ArrayUtils.java │ │ │ │ │ ├── ArthasBanner.java │ │ │ │ │ ├── ArthasCheckUtils.java │ │ │ │ │ ├── ClassLoaderUtils.java │ │ │ │ │ ├── ClassUtils.java │ │ │ │ │ ├── CommandUtils.java │ │ │ │ │ ├── Constants.java │ │ │ │ │ ├── DateUtils.java │ │ │ │ │ ├── Decompiler.java │ │ │ │ │ ├── FileUtils.java │ │ │ │ │ ├── HttpUtils.java │ │ │ │ │ ├── IOUtils.java │ │ │ │ │ ├── IPUtils.java │ │ │ │ │ ├── InstrumentationUtils.java │ │ │ │ │ ├── LogUtil.java │ │ │ │ │ ├── NetUtils.java │ │ │ │ │ ├── ObjectUtils.java │ │ │ │ │ ├── RegexCacheManager.java │ │ │ │ │ ├── ResultUtils.java │ │ │ │ │ ├── SearchUtils.java │ │ │ │ │ ├── StringUtils.java │ │ │ │ │ ├── ThreadLocalWatch.java │ │ │ │ │ ├── ThreadUtil.java │ │ │ │ │ ├── TokenUtils.java │ │ │ │ │ ├── TypeRenderUtils.java │ │ │ │ │ ├── UserStatUtil.java │ │ │ │ │ ├── affect/ │ │ │ │ │ │ ├── Affect.java │ │ │ │ │ │ ├── EnhancerAffect.java │ │ │ │ │ │ └── RowAffect.java │ │ │ │ │ ├── collection/ │ │ │ │ │ │ ├── GaStack.java │ │ │ │ │ │ ├── ThreadUnsafeFixGaStack.java │ │ │ │ │ │ └── ThreadUnsafeGaStack.java │ │ │ │ │ ├── matcher/ │ │ │ │ │ │ ├── EqualsMatcher.java │ │ │ │ │ │ ├── FalseMatcher.java │ │ │ │ │ │ ├── GroupMatcher.java │ │ │ │ │ │ ├── Matcher.java │ │ │ │ │ │ ├── RegexMatcher.java │ │ │ │ │ │ ├── TrueMatcher.java │ │ │ │ │ │ └── WildcardMatcher.java │ │ │ │ │ ├── metrics/ │ │ │ │ │ │ ├── RateCounter.java │ │ │ │ │ │ └── SumRateCounter.java │ │ │ │ │ ├── reflect/ │ │ │ │ │ │ ├── ArthasReflectUtils.java │ │ │ │ │ │ └── FieldUtils.java │ │ │ │ │ └── usage/ │ │ │ │ │ └── StyledUsageFormatter.java │ │ │ │ └── view/ │ │ │ │ ├── Ansi.java │ │ │ │ ├── ClassInfoView.java │ │ │ │ ├── KVView.java │ │ │ │ ├── LadderView.java │ │ │ │ ├── MethodInfoView.java │ │ │ │ ├── ObjectView.java │ │ │ │ ├── TableView.java │ │ │ │ ├── TreeView.java │ │ │ │ └── View.java │ │ │ ├── logback.xml │ │ │ └── one/ │ │ │ └── profiler/ │ │ │ ├── AsyncProfiler.java │ │ │ ├── AsyncProfilerMXBean.java │ │ │ ├── Counter.java │ │ │ ├── Events.java │ │ │ └── package-info.java │ │ └── resources/ │ │ └── com/ │ │ └── taobao/ │ │ └── arthas/ │ │ └── core/ │ │ ├── res/ │ │ │ ├── logo.txt │ │ │ └── thanks.txt │ │ └── shell/ │ │ └── term/ │ │ └── readline/ │ │ └── inputrc │ └── test/ │ ├── java/ │ │ └── com/ │ │ └── taobao/ │ │ └── arthas/ │ │ └── core/ │ │ ├── GlobalOptionsTest.java │ │ ├── advisor/ │ │ │ ├── EnhancerTest.java │ │ │ └── SpyImplTest.java │ │ ├── bytecode/ │ │ │ └── TestHelper.java │ │ ├── command/ │ │ │ ├── basic1000/ │ │ │ │ ├── GrepCommandTest.java │ │ │ │ └── OptionsCommandTest.java │ │ │ ├── express/ │ │ │ │ ├── FlowAttribute.java │ │ │ │ ├── FlowContext.java │ │ │ │ ├── OgnlExpressTest.java │ │ │ │ └── OgnlTest.java │ │ │ ├── klass100/ │ │ │ │ └── ClassLoaderCommandUrlClassesTest.java │ │ │ └── monitor200/ │ │ │ ├── ProfilerMarkdownTest.java │ │ │ └── SizeLimitValidationTest.java │ │ ├── config/ │ │ │ ├── ErrorProperties.java │ │ │ ├── PropertiesInjectUtilTest.java │ │ │ ├── Server.java │ │ │ ├── ServerProperties.java │ │ │ ├── ServerPropertiesTest.java │ │ │ ├── Ssl.java │ │ │ └── SystemObject.java │ │ ├── distribution/ │ │ │ └── TermResultDistributorImplTest.java │ │ ├── env/ │ │ │ └── ArthasEnvironmentTest.java │ │ ├── mcp/ │ │ │ └── tool/ │ │ │ └── function/ │ │ │ └── basic1000/ │ │ │ └── ViewFileToolTest.java │ │ ├── security/ │ │ │ └── SecurityAuthenticatorImplTest.java │ │ ├── server/ │ │ │ └── ArthasBootstrapTest.java │ │ ├── shell/ │ │ │ ├── cli/ │ │ │ │ └── impl/ │ │ │ │ └── CliTokenImplTest.java │ │ │ ├── command/ │ │ │ │ └── internal/ │ │ │ │ └── GrepHandlerTest.java │ │ │ ├── system/ │ │ │ │ └── impl/ │ │ │ │ └── ProcessImplConcurrencyTest.java │ │ │ └── term/ │ │ │ └── impl/ │ │ │ └── http/ │ │ │ └── api/ │ │ │ └── HttpApiHandlerTest.java │ │ ├── testtool/ │ │ │ └── TestUtils.java │ │ ├── util/ │ │ │ ├── ArrayUtilsTest.java │ │ │ ├── ArthasCheckUtilsTest.java │ │ │ ├── DateUtilsTest.java │ │ │ ├── DecompilerTest.java │ │ │ ├── FileUtilsTest.java │ │ │ ├── IPUtilsTest.java │ │ │ ├── LogUtilTest.java │ │ │ ├── LongStackTest.java │ │ │ ├── RegexCacheManagerTest.java │ │ │ ├── StringUtilsTest.java │ │ │ ├── TokenUtilsTest.java │ │ │ ├── TypeRenderUtilsTest.java │ │ │ └── matcher/ │ │ │ ├── EqualsMatcherTest.java │ │ │ ├── FalseMatcherTest.java │ │ │ ├── RegexMatcherTest.java │ │ │ ├── TrueMatcherTest.java │ │ │ └── WildcardMatcherTest.java │ │ └── view/ │ │ └── ObjectViewTest.java │ └── resources/ │ ├── logback-test.xml │ └── logback.xml ├── integration-test/ │ └── telnet-stop-leak/ │ ├── README.md │ ├── arthas_telnet.exp │ ├── commands.txt │ └── run_telnet_stop_leak_test.py ├── labs/ │ ├── README.md │ ├── arthas-grpc-server/ │ │ ├── README.md │ │ ├── pom.xml │ │ └── src/ │ │ ├── main/ │ │ │ ├── java/ │ │ │ │ └── com/ │ │ │ │ └── taobao/ │ │ │ │ └── arthas/ │ │ │ │ └── grpc/ │ │ │ │ └── server/ │ │ │ │ ├── ArthasGrpcBootstrap.java │ │ │ │ ├── ArthasGrpcServer.java │ │ │ │ ├── handler/ │ │ │ │ │ ├── GrpcDispatcher.java │ │ │ │ │ ├── GrpcRequest.java │ │ │ │ │ ├── GrpcResponse.java │ │ │ │ │ ├── Http2FrameRequest.java │ │ │ │ │ ├── Http2Handler.java │ │ │ │ │ ├── StreamObserver.java │ │ │ │ │ ├── annotation/ │ │ │ │ │ │ ├── GrpcMethod.java │ │ │ │ │ │ └── GrpcService.java │ │ │ │ │ ├── constant/ │ │ │ │ │ │ └── GrpcInvokeTypeEnum.java │ │ │ │ │ └── executor/ │ │ │ │ │ ├── AbstractGrpcExecutor.java │ │ │ │ │ ├── BiStreamExecutor.java │ │ │ │ │ ├── ClientStreamExecutor.java │ │ │ │ │ ├── GrpcExecutor.java │ │ │ │ │ ├── GrpcExecutorFactory.java │ │ │ │ │ ├── ServerStreamExecutor.java │ │ │ │ │ └── UnaryExecutor.java │ │ │ │ ├── service/ │ │ │ │ │ ├── ArthasSampleService.java │ │ │ │ │ └── impl/ │ │ │ │ │ └── ArthasSampleServiceImpl.java │ │ │ │ └── utils/ │ │ │ │ ├── ByteUtil.java │ │ │ │ └── ReflectUtil.java │ │ │ └── proto/ │ │ │ ├── arthasGrpc.proto │ │ │ └── arthasUnittest.proto │ │ └── test/ │ │ └── java/ │ │ └── unittest/ │ │ └── grpc/ │ │ ├── GrpcTest.java │ │ └── service/ │ │ ├── ArthasUnittestService.java │ │ └── impl/ │ │ └── ArthasUnittestServiceImpl.java │ ├── arthas-grpc-web-proxy/ │ │ ├── README.md │ │ ├── pom.xml │ │ ├── src/ │ │ │ ├── main/ │ │ │ │ ├── java/ │ │ │ │ │ └── com/ │ │ │ │ │ └── taobao/ │ │ │ │ │ └── arthas/ │ │ │ │ │ └── grpcweb/ │ │ │ │ │ ├── grpc/ │ │ │ │ │ │ ├── DemoBootstrap.java │ │ │ │ │ │ ├── distribution/ │ │ │ │ │ │ │ └── GrpcResultDistributorImpl.java │ │ │ │ │ │ ├── model/ │ │ │ │ │ │ │ ├── EnhancerRequestModel.java │ │ │ │ │ │ │ ├── WatchRequestModel.java │ │ │ │ │ │ │ └── WatchResponseModel.java │ │ │ │ │ │ ├── objectUtils/ │ │ │ │ │ │ │ ├── ComplexObject.java │ │ │ │ │ │ │ └── JavaObjectConverter.java │ │ │ │ │ │ ├── observer/ │ │ │ │ │ │ │ ├── ArthasStreamObserver.java │ │ │ │ │ │ │ └── impl/ │ │ │ │ │ │ │ ├── ArthasStreamObserverImpl.java │ │ │ │ │ │ │ └── GrpcProcess.java │ │ │ │ │ │ ├── server/ │ │ │ │ │ │ │ ├── GrpcServer.java │ │ │ │ │ │ │ └── httpServer/ │ │ │ │ │ │ │ ├── NettyHttpInitializer.java │ │ │ │ │ │ │ ├── NettyHttpServer.java │ │ │ │ │ │ │ └── NettyHttpStaticFileHandler.java │ │ │ │ │ │ ├── service/ │ │ │ │ │ │ │ ├── GrpcJobController.java │ │ │ │ │ │ │ ├── ObjectService.java │ │ │ │ │ │ │ ├── PwdCommandService.java │ │ │ │ │ │ │ ├── SystemPropertyCommandService.java │ │ │ │ │ │ │ ├── WatchCommandService.java │ │ │ │ │ │ │ └── advisor/ │ │ │ │ │ │ │ ├── AdviceListenerManager.java │ │ │ │ │ │ │ ├── Enhancer.java │ │ │ │ │ │ │ ├── SpyImpl.java │ │ │ │ │ │ │ └── WatchRpcAdviceListener.java │ │ │ │ │ │ └── view/ │ │ │ │ │ │ ├── GrpcEnhancerView.java │ │ │ │ │ │ ├── GrpcMessageView.java │ │ │ │ │ │ ├── GrpcPwdView.java │ │ │ │ │ │ ├── GrpcResultView.java │ │ │ │ │ │ ├── GrpcResultViewResolver.java │ │ │ │ │ │ ├── GrpcStatusView.java │ │ │ │ │ │ ├── GrpcSystemPropertyView.java │ │ │ │ │ │ └── GrpcWatchView.java │ │ │ │ │ └── proxy/ │ │ │ │ │ ├── CorsUtils.java │ │ │ │ │ ├── GrpcServiceConnectionManager.java │ │ │ │ │ ├── GrpcWebClientInterceptor.java │ │ │ │ │ ├── GrpcWebRequestHandler.java │ │ │ │ │ ├── MessageDeframer.java │ │ │ │ │ ├── MessageFramer.java │ │ │ │ │ ├── MessageUtils.java │ │ │ │ │ ├── MetadataUtil.java │ │ │ │ │ ├── SendGrpcWebResponse.java │ │ │ │ │ ├── SingleHttpChunkedInput.java │ │ │ │ │ └── server/ │ │ │ │ │ ├── GrpcWebProxyHandler.java │ │ │ │ │ ├── GrpcWebProxyServer.java │ │ │ │ │ └── GrpcWebProxyServerInitializer.java │ │ │ │ └── proto/ │ │ │ │ ├── ArthasServices.proto │ │ │ │ ├── echo.proto │ │ │ │ ├── greeter.proto │ │ │ │ └── helloworld.proto │ │ │ └── test/ │ │ │ ├── java/ │ │ │ │ └── com/ │ │ │ │ └── taobao/ │ │ │ │ └── arthas/ │ │ │ │ └── grpcweb/ │ │ │ │ ├── grpc/ │ │ │ │ │ └── service/ │ │ │ │ │ └── JavaObjectConverterTest.java │ │ │ │ └── proxy/ │ │ │ │ └── server/ │ │ │ │ ├── CorsUtilsTest.java │ │ │ │ ├── GrpcWebProxyServerTest.java │ │ │ │ ├── MessageDeframerTest.java │ │ │ │ ├── MessageUtilsTest.java │ │ │ │ ├── StartGrpcTest.java │ │ │ │ ├── StartGrpcWebProxyTest.java │ │ │ │ └── grpcService/ │ │ │ │ ├── EchoImpl.java │ │ │ │ ├── GreeterService.java │ │ │ │ └── HelloImpl.java │ │ │ └── proto/ │ │ │ ├── echo.proto │ │ │ ├── greeter.proto │ │ │ └── helloworld.proto │ │ └── ui/ │ │ ├── .gitignore │ │ ├── README.md │ │ ├── babel.config.js │ │ ├── jsconfig.json │ │ ├── package.json │ │ ├── public/ │ │ │ └── index.html │ │ ├── src/ │ │ │ ├── App.vue │ │ │ ├── assets/ │ │ │ │ └── proto/ │ │ │ │ ├── ArthasServices.proto │ │ │ │ ├── ArthasServices_grpc_web_pb.js │ │ │ │ └── ArthasServices_pb.js │ │ │ ├── components/ │ │ │ │ └── DemoUI.vue │ │ │ ├── main.js │ │ │ ├── router/ │ │ │ │ ├── index.js │ │ │ │ └── routes.js │ │ │ └── view/ │ │ │ ├── pwdView.vue │ │ │ ├── syspropView.vue │ │ │ ├── vmtoolView.vue │ │ │ └── watchView.vue │ │ └── vue.config.js │ ├── arthas-jfr-backend/ │ │ ├── .gitattributes │ │ ├── .gitignore │ │ ├── .mvn/ │ │ │ └── wrapper/ │ │ │ └── maven-wrapper.properties │ │ ├── README.md │ │ ├── mvnw │ │ ├── mvnw.cmd │ │ ├── pom.xml │ │ └── src/ │ │ ├── main/ │ │ │ ├── java/ │ │ │ │ └── org/ │ │ │ │ └── example/ │ │ │ │ └── jfranalyzerbackend/ │ │ │ │ ├── JfrAnalyzerBackendApplication.java │ │ │ │ ├── config/ │ │ │ │ │ ├── ArthasConfig.java │ │ │ │ │ ├── CorsConfig.java │ │ │ │ │ └── Result.java │ │ │ │ ├── controller/ │ │ │ │ │ ├── FileController.java │ │ │ │ │ └── JFRAnalysisController.java │ │ │ │ ├── dto/ │ │ │ │ │ └── FileView.java │ │ │ │ ├── entity/ │ │ │ │ │ ├── PerfDimensionFactory.java │ │ │ │ │ ├── ProfileDimension.java │ │ │ │ │ └── shared/ │ │ │ │ │ ├── BaseEntity.java │ │ │ │ │ └── file/ │ │ │ │ │ ├── BaseFileEntity.java │ │ │ │ │ ├── DeletedFileEntity.java │ │ │ │ │ └── FileEntity.java │ │ │ │ ├── enums/ │ │ │ │ │ ├── CommonErrorCode.java │ │ │ │ │ ├── EventConstant.java │ │ │ │ │ ├── FileType.java │ │ │ │ │ ├── ServerErrorCode.java │ │ │ │ │ └── Unit.java │ │ │ │ ├── exception/ │ │ │ │ │ ├── CommonException.java │ │ │ │ │ ├── ErrorCode.java │ │ │ │ │ ├── ErrorCodeAccessor.java │ │ │ │ │ ├── ErrorCodeException.java │ │ │ │ │ ├── ExceptionFactory.java │ │ │ │ │ └── ProfileAnalysisException.java │ │ │ │ ├── extractor/ │ │ │ │ │ ├── AllocatedMemoryExtractor.java │ │ │ │ │ ├── AllocationsExtractor.java │ │ │ │ │ ├── BaseValueExtractor.java │ │ │ │ │ ├── CPUSampleExtractor.java │ │ │ │ │ ├── CPUTimeExtractor.java │ │ │ │ │ ├── ClassLoadCountExtractor.java │ │ │ │ │ ├── ClassLoadWallTimeExtractor.java │ │ │ │ │ ├── CountExtractor.java │ │ │ │ │ ├── EventVisitor.java │ │ │ │ │ ├── Extractor.java │ │ │ │ │ ├── FileIOTimeExtractor.java │ │ │ │ │ ├── FileReadExtractor.java │ │ │ │ │ ├── FileWriteExtractor.java │ │ │ │ │ ├── JFRAnalysisContext.java │ │ │ │ │ ├── NativeExecutionExtractor.java │ │ │ │ │ ├── SocketReadSizeExtractor.java │ │ │ │ │ ├── SocketReadTimeExtractor.java │ │ │ │ │ ├── SocketWriteSizeExtractor.java │ │ │ │ │ ├── SocketWriteTimeExtractor.java │ │ │ │ │ ├── SynchronizationExtractor.java │ │ │ │ │ ├── ThreadParkExtractor.java │ │ │ │ │ ├── ThreadSleepTimeExtractor.java │ │ │ │ │ └── WallClockExtractor.java │ │ │ │ ├── model/ │ │ │ │ │ ├── AnalysisResult.java │ │ │ │ │ ├── BaseTaskResult.java │ │ │ │ │ ├── Desc.java │ │ │ │ │ ├── DimensionResult.java │ │ │ │ │ ├── Filter.java │ │ │ │ │ ├── Frame.java │ │ │ │ │ ├── JavaFrame.java │ │ │ │ │ ├── JavaMethod.java │ │ │ │ │ ├── JavaThread.java │ │ │ │ │ ├── JavaThreadCPUTime.java │ │ │ │ │ ├── LeafPerfDimension.java │ │ │ │ │ ├── Method.java │ │ │ │ │ ├── PerfDimension.java │ │ │ │ │ ├── Problem.java │ │ │ │ │ ├── StackTrace.java │ │ │ │ │ ├── Task.java │ │ │ │ │ ├── TaskAllocatedMemory.java │ │ │ │ │ ├── TaskAllocations.java │ │ │ │ │ ├── TaskCPUTime.java │ │ │ │ │ ├── TaskCount.java │ │ │ │ │ ├── TaskData.java │ │ │ │ │ ├── TaskSum.java │ │ │ │ │ ├── jfr/ │ │ │ │ │ │ ├── EventType.java │ │ │ │ │ │ ├── RecordedClass.java │ │ │ │ │ │ ├── RecordedEvent.java │ │ │ │ │ │ ├── RecordedFrame.java │ │ │ │ │ │ ├── RecordedMethod.java │ │ │ │ │ │ ├── RecordedStackTrace.java │ │ │ │ │ │ └── RecordedThread.java │ │ │ │ │ └── symbol/ │ │ │ │ │ ├── SymbolBase.java │ │ │ │ │ └── SymbolTable.java │ │ │ │ ├── repository/ │ │ │ │ │ ├── DeletedFileRepo.java │ │ │ │ │ └── FileRepo.java │ │ │ │ ├── request/ │ │ │ │ │ └── AnalysisRequest.java │ │ │ │ ├── service/ │ │ │ │ │ ├── FileService.java │ │ │ │ │ ├── JFRAnalysisService.java │ │ │ │ │ ├── JFRAnalyzer.java │ │ │ │ │ └── impl/ │ │ │ │ │ ├── FileServiceImpl.java │ │ │ │ │ ├── JFRAnalysisServiceImpl.java │ │ │ │ │ └── JFRAnalyzerImpl.java │ │ │ │ ├── util/ │ │ │ │ │ ├── DimensionBuilder.java │ │ │ │ │ ├── FileViewConverter.java │ │ │ │ │ ├── GCUtil.java │ │ │ │ │ ├── PagingRequest.java │ │ │ │ │ ├── PathSecurityUtil.java │ │ │ │ │ ├── StackTraceUtil.java │ │ │ │ │ └── TimeUtil.java │ │ │ │ └── vo/ │ │ │ │ ├── FlameGraph.java │ │ │ │ ├── GraphBase.java │ │ │ │ ├── Metadata.java │ │ │ │ └── PageView.java │ │ │ └── resources/ │ │ │ └── application.yml │ │ └── test/ │ │ └── java/ │ │ └── org/ │ │ └── example/ │ │ └── jfranalyzerbackend/ │ │ └── JfrAnalyzerBackendApplicationTests.java │ ├── arthas-jfr-frontend/ │ │ ├── .gitignore │ │ ├── README.md │ │ ├── index.html │ │ ├── package.json │ │ ├── pom.xml │ │ ├── public/ │ │ │ └── flame-graph/ │ │ │ ├── flame-graph-class.js │ │ │ ├── flame-graph-component.js │ │ │ └── flame-graph-core.js │ │ ├── src/ │ │ │ ├── App.tsx │ │ │ ├── components/ │ │ │ │ ├── FileTable/ │ │ │ │ │ ├── FileTable.tsx │ │ │ │ │ └── index.tsx │ │ │ │ ├── FileUpload/ │ │ │ │ │ ├── FileUpload.tsx │ │ │ │ │ └── index.tsx │ │ │ │ └── FlameGraph/ │ │ │ │ ├── FlameStats.tsx │ │ │ │ ├── ReactFlameGraphWrapper.tsx │ │ │ │ ├── flame-graph-class.js │ │ │ │ ├── flame-graph-component.js │ │ │ │ └── flame-graph-core.js │ │ │ ├── global.less │ │ │ ├── hooks/ │ │ │ │ └── useWindowSize.ts │ │ │ ├── layouts/ │ │ │ │ └── BasicLayout.tsx │ │ │ ├── main.tsx │ │ │ ├── pages/ │ │ │ │ ├── Analysis/ │ │ │ │ │ ├── Analysis.tsx │ │ │ │ │ └── index.tsx │ │ │ │ └── Home/ │ │ │ │ ├── Home.tsx │ │ │ │ └── index.tsx │ │ │ ├── services/ │ │ │ │ ├── api.ts │ │ │ │ ├── fileService.ts │ │ │ │ ├── jfr.ts │ │ │ │ └── jfrService.ts │ │ │ ├── stores/ │ │ │ │ └── FileContext.tsx │ │ │ ├── types/ │ │ │ │ └── global.d.ts │ │ │ └── utils/ │ │ │ ├── color.ts │ │ │ ├── format.ts │ │ │ └── formatFlamegraph.ts │ │ ├── tsconfig.json │ │ ├── tsconfig.node.json │ │ └── vite.config.ts │ └── cluster-management/ │ ├── README.md │ ├── native-agent/ │ │ ├── pom.xml │ │ └── src/ │ │ └── main/ │ │ ├── java/ │ │ │ └── com/ │ │ │ └── alibaba/ │ │ │ └── arthas/ │ │ │ └── nat/ │ │ │ └── agent/ │ │ │ ├── core/ │ │ │ │ ├── ArthasHomeHandler.java │ │ │ │ ├── JvmAttachmentHandler.java │ │ │ │ ├── ListJvmProcessHandler.java │ │ │ │ └── MonitorTargetPidHandler.java │ │ │ ├── factory/ │ │ │ │ └── NativeAgentRegistryFactory.java │ │ │ ├── registry/ │ │ │ │ ├── NativeAgentRegistry.java │ │ │ │ └── impl/ │ │ │ │ ├── EtcdNativeAgentRegistry.java │ │ │ │ └── ZookeeperNativeAgentRegistry.java │ │ │ └── server/ │ │ │ ├── NativeAgentBootstrap.java │ │ │ ├── dto/ │ │ │ │ └── JavaProcessInfoDTO.java │ │ │ ├── forward/ │ │ │ │ ├── ForwardClientSocketClientHandler.java │ │ │ │ ├── LocalFrameHandler.java │ │ │ │ └── RelayHandler.java │ │ │ └── http/ │ │ │ ├── HttpNativeAgentHandler.java │ │ │ └── HttpRequestHandler.java │ │ └── resources/ │ │ ├── META-INF/ │ │ │ └── arthas/ │ │ │ └── com.alibaba.arthas.native.agent.NativeAgentRegistryFactory │ │ └── log4j.properties │ ├── native-agent-common/ │ │ ├── pom.xml │ │ └── src/ │ │ └── main/ │ │ └── java/ │ │ └── com/ │ │ └── alibaba/ │ │ └── arthas/ │ │ └── nat/ │ │ └── agent/ │ │ └── common/ │ │ ├── constants/ │ │ │ └── NativeAgentConstants.java │ │ ├── dto/ │ │ │ └── NativeAgentInfoDTO.java │ │ ├── handler/ │ │ │ └── HttpOptionRequestHandler.java │ │ └── utils/ │ │ ├── OkHttpUtil.java │ │ └── WelcomeUtil.java │ ├── native-agent-management-web/ │ │ ├── pom.xml │ │ └── src/ │ │ └── main/ │ │ ├── java/ │ │ │ └── com/ │ │ │ └── alibaba/ │ │ │ └── arthas/ │ │ │ └── nat/ │ │ │ └── agent/ │ │ │ └── management/ │ │ │ └── web/ │ │ │ ├── discovery/ │ │ │ │ ├── NativeAgentProxyDiscovery.java │ │ │ │ └── impl/ │ │ │ │ ├── EtcdNativeAgentProxyDiscovery.java │ │ │ │ └── ZookeeperNativeAgentProxyDiscovery.java │ │ │ ├── factory/ │ │ │ │ └── NativeAgentProxyDiscoveryFactory.java │ │ │ └── server/ │ │ │ ├── NativeAgentManagementWebBootstrap.java │ │ │ └── http/ │ │ │ ├── HttpNativeAgentHandler.java │ │ │ ├── HttpNativeAgentProxyHandler.java │ │ │ ├── HttpRequestHandler.java │ │ │ └── HttpResourcesHandler.java │ │ └── resources/ │ │ ├── META-INF/ │ │ │ └── arthas/ │ │ │ └── com.alibaba.arthas.native.agent.management.web.NativeAgentProxyDiscoveryFactory │ │ ├── log4j.properties │ │ └── native-agent/ │ │ ├── agents.html │ │ ├── console.html │ │ ├── index.html │ │ ├── processes.html │ │ └── static/ │ │ ├── css/ │ │ │ ├── console-991af56b.css │ │ │ ├── main-c782b056.css │ │ │ └── xterm-2831e07f.css │ │ └── js/ │ │ ├── Agent-7549a395.js │ │ ├── agents-b07f3b75.js │ │ ├── axios-1e59ba81.js │ │ ├── console-35a3b78f.js │ │ ├── main-38ee3337.js │ │ ├── nativeAgent-1df0817e.js │ │ └── processes-c1a6eec6.js │ └── native-agent-proxy/ │ ├── pom.xml │ └── src/ │ └── main/ │ ├── java/ │ │ └── com/ │ │ └── alibaba/ │ │ └── arthas/ │ │ └── nat/ │ │ └── agent/ │ │ └── proxy/ │ │ ├── discovery/ │ │ │ ├── NativeAgentDiscovery.java │ │ │ └── impl/ │ │ │ ├── EtcdNativeAgentDiscovery.java │ │ │ └── ZookeeperNativeAgentDiscovery.java │ │ ├── factory/ │ │ │ ├── NativeAgentDiscoveryFactory.java │ │ │ └── NativeAgentProxyRegistryFactory.java │ │ ├── registry/ │ │ │ ├── NativeAgentProxyRegistry.java │ │ │ └── impl/ │ │ │ ├── EtcdNativeAgentProxyRegistry.java │ │ │ └── ZookeeperNativeAgentProxyRegistry.java │ │ └── server/ │ │ ├── NativeAgentProxyBootstrap.java │ │ └── handler/ │ │ ├── RequestHandler.java │ │ ├── http/ │ │ │ ├── HttpNativeAgentHandler.java │ │ │ └── HttpRequestHandler.java │ │ └── ws/ │ │ ├── WebSocketClientHandler.java │ │ └── WsRequestHandler.java │ └── resources/ │ ├── META-INF/ │ │ └── arthas/ │ │ ├── com.alibaba.arthas.native.agent.proxy.NativeAgentDiscoveryFactory │ │ └── com.alibaba.arthas.native.agent.proxy.NativeAgentProxyRegistryFactory │ └── log4j.properties ├── math-game/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── demo/ │ └── MathGame.java ├── memorycompiler/ │ ├── LICENSE │ ├── README.md │ ├── pom.xml │ └── src/ │ ├── main/ │ │ └── java/ │ │ └── com/ │ │ └── taobao/ │ │ └── arthas/ │ │ └── compiler/ │ │ ├── ClassUriWrapper.java │ │ ├── CustomJavaFileObject.java │ │ ├── DynamicClassLoader.java │ │ ├── DynamicCompiler.java │ │ ├── DynamicCompilerException.java │ │ ├── DynamicJavaFileManager.java │ │ ├── MemoryByteCode.java │ │ ├── PackageInternalsFinder.java │ │ └── StringSource.java │ └── test/ │ ├── java/ │ │ └── com/ │ │ └── taobao/ │ │ └── arthas/ │ │ └── compiler/ │ │ ├── DynamicCompilerTest.java │ │ └── PackageInternalsFinderTest.java │ └── resources/ │ ├── TestLogger1.java │ ├── TestLogger2.java │ └── file/ │ ├── test folder/ │ │ └── file.txt │ └── 测试目录/ │ └── file.txt ├── mvnw ├── mvnw.cmd ├── packaging/ │ ├── pom.xml │ └── src/ │ ├── deb/ │ │ ├── control/ │ │ │ └── control │ │ ├── copyright/ │ │ │ └── copyright.1 │ │ └── man1/ │ │ └── arthas.1 │ └── main/ │ └── assembly/ │ ├── assembly-doc.xml │ └── assembly.xml ├── pom.xml ├── site/ │ ├── .gitignore │ ├── .prettierignore │ ├── .prettierrc.json │ ├── README.md │ ├── docs/ │ │ ├── .vuepress/ │ │ │ ├── client.js │ │ │ ├── config.js │ │ │ ├── configs/ │ │ │ │ ├── head/ │ │ │ │ │ ├── head.js │ │ │ │ │ └── index.js │ │ │ │ ├── index.js │ │ │ │ ├── navbar/ │ │ │ │ │ ├── en.js │ │ │ │ │ ├── index.js │ │ │ │ │ └── zh.js │ │ │ │ └── sidebar/ │ │ │ │ ├── en.js │ │ │ │ ├── index.js │ │ │ │ └── zh.js │ │ │ ├── oldContributorsData.json │ │ │ ├── plugins/ │ │ │ │ └── vuepress-plugin-loadVersion/ │ │ │ │ └── index.js │ │ │ ├── public/ │ │ │ │ └── doc/ │ │ │ │ └── arthas-tutorials.html │ │ │ ├── styles/ │ │ │ │ └── index.scss │ │ │ └── theme/ │ │ │ ├── components/ │ │ │ │ ├── AutoLink.vue │ │ │ │ ├── Badge.vue │ │ │ │ ├── Home.vue │ │ │ │ ├── HomeBadges.vue │ │ │ │ ├── HomeFeatures.vue │ │ │ │ ├── HomeHero.vue │ │ │ │ ├── HomeUserBoards.vue │ │ │ │ ├── NavbarBrand.vue │ │ │ │ ├── NavbarDropdown.vue │ │ │ │ ├── Page.vue │ │ │ │ ├── RightMenu.vue │ │ │ │ ├── UserBoard.vue │ │ │ │ └── icons/ │ │ │ │ ├── Fork.vue │ │ │ │ ├── GitHub.vue │ │ │ │ ├── Star.vue │ │ │ │ └── Translate.vue │ │ │ └── index.js │ │ ├── README.md │ │ ├── doc/ │ │ │ ├── README.md │ │ │ ├── advanced-use.md │ │ │ ├── advice-class.md │ │ │ ├── agent.md │ │ │ ├── arthas-properties.md │ │ │ ├── arthas3.md │ │ │ ├── async.md │ │ │ ├── auth.md │ │ │ ├── base64.md │ │ │ ├── batch-support.md │ │ │ ├── cat.md │ │ │ ├── classloader.md │ │ │ ├── cls.md │ │ │ ├── commands.md │ │ │ ├── contact-us.md │ │ │ ├── dashboard.md │ │ │ ├── docker.md │ │ │ ├── download.md │ │ │ ├── dump.md │ │ │ ├── echo.md │ │ │ ├── faq.md │ │ │ ├── getstatic.md │ │ │ ├── grep.md │ │ │ ├── groovy.md │ │ │ ├── heapdump.md │ │ │ ├── help.md │ │ │ ├── history.md │ │ │ ├── http-api.md │ │ │ ├── idea-plugin.md │ │ │ ├── install-detail.md │ │ │ ├── jad.md │ │ │ ├── jfr.md │ │ │ ├── jvm.md │ │ │ ├── keymap.md │ │ │ ├── logger.md │ │ │ ├── manual-install.md │ │ │ ├── mbean.md │ │ │ ├── mc.md │ │ │ ├── mcp-server.md │ │ │ ├── memory.md │ │ │ ├── monitor.md │ │ │ ├── ognl.md │ │ │ ├── options.md │ │ │ ├── perfcounter.md │ │ │ ├── profiler.md │ │ │ ├── pwd.md │ │ │ ├── quick-start.md │ │ │ ├── quit.md │ │ │ ├── redefine.md │ │ │ ├── release-notes.md │ │ │ ├── reset.md │ │ │ ├── retransform.md │ │ │ ├── save-log.md │ │ │ ├── sc.md │ │ │ ├── session.md │ │ │ ├── sm.md │ │ │ ├── spring-boot-starter.md │ │ │ ├── stack.md │ │ │ ├── start-arthas.md │ │ │ ├── stop.md │ │ │ ├── sysenv.md │ │ │ ├── sysprop.md │ │ │ ├── tee.md │ │ │ ├── thread.md │ │ │ ├── trace.md │ │ │ ├── tt.md │ │ │ ├── tunnel.md │ │ │ ├── version.md │ │ │ ├── vmoption.md │ │ │ ├── vmtool.md │ │ │ ├── watch.md │ │ │ └── web-console.md │ │ └── en/ │ │ ├── README.md │ │ └── doc/ │ │ ├── README.md │ │ ├── advanced-use.md │ │ ├── advice-class.md │ │ ├── agent.md │ │ ├── arthas-properties.md │ │ ├── async.md │ │ ├── auth.md │ │ ├── base64.md │ │ ├── batch-support.md │ │ ├── cat.md │ │ ├── classloader.md │ │ ├── cls.md │ │ ├── commands.md │ │ ├── contact-us.md │ │ ├── dashboard.md │ │ ├── docker.md │ │ ├── download.md │ │ ├── dump.md │ │ ├── echo.md │ │ ├── faq.md │ │ ├── getstatic.md │ │ ├── grep.md │ │ ├── groovy.md │ │ ├── heapdump.md │ │ ├── help.md │ │ ├── history.md │ │ ├── http-api.md │ │ ├── idea-plugin.md │ │ ├── install-detail.md │ │ ├── jad.md │ │ ├── jfr.md │ │ ├── jvm.md │ │ ├── keymap.md │ │ ├── logger.md │ │ ├── manual-install.md │ │ ├── mbean.md │ │ ├── mc.md │ │ ├── mcp-server.md │ │ ├── memory.md │ │ ├── monitor.md │ │ ├── ognl.md │ │ ├── options.md │ │ ├── perfcounter.md │ │ ├── profiler.md │ │ ├── pwd.md │ │ ├── quick-start.md │ │ ├── quit.md │ │ ├── redefine.md │ │ ├── release-notes.md │ │ ├── reset.md │ │ ├── retransform.md │ │ ├── save-log.md │ │ ├── sc.md │ │ ├── session.md │ │ ├── sm.md │ │ ├── spring-boot-starter.md │ │ ├── stack.md │ │ ├── start-arthas.md │ │ ├── stop.md │ │ ├── sysenv.md │ │ ├── sysprop.md │ │ ├── tee.md │ │ ├── thread.md │ │ ├── trace.md │ │ ├── tt.md │ │ ├── tunnel.md │ │ ├── version.md │ │ ├── vmoption.md │ │ ├── vmtool.md │ │ ├── watch.md │ │ └── web-console.md │ ├── package.json │ └── pom.xml ├── skills/ │ ├── SKILL.md │ ├── cpu-high/ │ │ └── SKILL.md │ ├── eagleeye-traceid/ │ │ └── SKILL.md │ └── spring-context/ │ └── SKILL.md ├── spy/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── java/ │ └── arthas/ │ └── SpyAPI.java ├── testcase/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── alibaba/ │ └── arthas/ │ ├── Pojo.java │ ├── Test.java │ └── Type.java ├── tunnel-client/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── com/ │ └── alibaba/ │ └── arthas/ │ └── tunnel/ │ └── client/ │ ├── ChannelUtils.java │ ├── ForwardClient.java │ ├── ForwardClientSocketClientHandler.java │ ├── LocalFrameHandler.java │ ├── ProxyClient.java │ ├── RelayHandler.java │ ├── TunnelClient.java │ └── TunnelClientSocketClientHandler.java ├── tunnel-common/ │ ├── pom.xml │ └── src/ │ ├── main/ │ │ └── java/ │ │ └── com/ │ │ └── alibaba/ │ │ └── arthas/ │ │ └── tunnel/ │ │ └── common/ │ │ ├── MethodConstants.java │ │ ├── SimpleHttpResponse.java │ │ └── URIConstans.java │ └── test/ │ └── java/ │ └── com/ │ └── alibaba/ │ └── arthas/ │ └── tunnel/ │ └── common/ │ └── SimpleHttpResponseTest.java ├── tunnel-server/ │ ├── README.md │ ├── pom.xml │ └── src/ │ ├── main/ │ │ ├── java/ │ │ │ └── com/ │ │ │ └── alibaba/ │ │ │ └── arthas/ │ │ │ └── tunnel/ │ │ │ └── server/ │ │ │ ├── AgentClusterInfo.java │ │ │ ├── AgentInfo.java │ │ │ ├── ChannelUtils.java │ │ │ ├── ClientConnectionInfo.java │ │ │ ├── RelayHandler.java │ │ │ ├── TunnelServer.java │ │ │ ├── TunnelSocketFrameHandler.java │ │ │ ├── TunnelSocketServerInitializer.java │ │ │ ├── app/ │ │ │ │ ├── ArthasTunnelApplication.java │ │ │ │ ├── WebSecurityConfig.java │ │ │ │ ├── configuration/ │ │ │ │ │ ├── ArthasProperties.java │ │ │ │ │ ├── EmbeddedRedisConfiguration.java │ │ │ │ │ ├── TunnelClusterStoreConfiguration.java │ │ │ │ │ └── TunnelServerConfiguration.java │ │ │ │ └── web/ │ │ │ │ ├── ClusterController.java │ │ │ │ ├── DetailAPIController.java │ │ │ │ ├── ProxyController.java │ │ │ │ └── StatController.java │ │ │ ├── cluster/ │ │ │ │ ├── InMemoryClusterStore.java │ │ │ │ ├── RedisTunnelClusterStore.java │ │ │ │ └── TunnelClusterStore.java │ │ │ ├── endpoint/ │ │ │ │ ├── ArthasEndPointAutoconfiguration.java │ │ │ │ └── ArthasEndpoint.java │ │ │ └── utils/ │ │ │ ├── HttpUtils.java │ │ │ └── InetAddressUtil.java │ │ └── resources/ │ │ └── application.properties │ └── test/ │ └── java/ │ └── com/ │ └── alibaba/ │ └── arthas/ │ └── tunnel/ │ └── server/ │ ├── URITest.java │ ├── app/ │ │ └── ArthasTunnelApplicationTest.java │ └── utils/ │ └── HttpUtilsTest.java └── web-ui/ ├── arthasWebConsole/ │ ├── .gitignore │ ├── README.md │ ├── README_ZH.md │ ├── all/ │ │ ├── env.d.ts │ │ ├── native-agent/ │ │ │ ├── Agent.d.ts │ │ │ ├── Process.d.ts │ │ │ ├── agents.html │ │ │ ├── console.html │ │ │ ├── index.html │ │ │ ├── processes.html │ │ │ └── src/ │ │ │ ├── Agent.vue │ │ │ ├── Process.vue │ │ │ ├── agents.ts │ │ │ ├── console.ts │ │ │ ├── main.css │ │ │ ├── main.ts │ │ │ └── processes.ts │ │ ├── share/ │ │ │ ├── component/ │ │ │ │ └── Console.vue │ │ │ └── main.css │ │ ├── tunnel/ │ │ │ ├── agents.html │ │ │ ├── apps.html │ │ │ ├── index.html │ │ │ ├── src/ │ │ │ │ ├── Agent.vue │ │ │ │ ├── Apps.vue │ │ │ │ ├── agents.ts │ │ │ │ ├── apps.ts │ │ │ │ ├── main.css │ │ │ │ └── main.ts │ │ │ └── tunnel.d.ts │ │ └── ui/ │ │ ├── index.html │ │ ├── src/ │ │ │ ├── main.css │ │ │ └── main.ts │ │ └── ui/ │ │ ├── index.html │ │ └── src/ │ │ ├── App.vue │ │ ├── arthas.d.ts │ │ ├── components/ │ │ │ ├── NavHeader.vue │ │ │ ├── charts/ │ │ │ │ ├── Bar.vue │ │ │ │ ├── Base.vue │ │ │ │ └── Line.vue │ │ │ ├── dialog/ │ │ │ │ ├── ErrDialog.vue │ │ │ │ ├── InputDialog.vue │ │ │ │ ├── SuccessDialog.vue │ │ │ │ └── WarnDialog.vue │ │ │ ├── input/ │ │ │ │ ├── AutoComplete.vue │ │ │ │ ├── ClassInput.vue │ │ │ │ ├── MethodInput.vue │ │ │ │ ├── PlayStop.vue │ │ │ │ ├── SwitchInput.vue │ │ │ │ └── TodoList.vue │ │ │ ├── routeTo/ │ │ │ │ └── SelectCmd.vue │ │ │ └── show/ │ │ │ ├── CmdResMenu.vue │ │ │ ├── Enhancer.vue │ │ │ ├── OptionConfigMenu.vue │ │ │ ├── ResTable.vue │ │ │ └── Tree.vue │ │ ├── echart.d.ts │ │ ├── machines/ │ │ │ ├── consoleMachine.ts │ │ │ ├── perRequestMachine.ts │ │ │ └── transformConfigMachine.ts │ │ ├── main.ts │ │ ├── router/ │ │ │ ├── index.ts │ │ │ └── routes.ts │ │ ├── stores/ │ │ │ ├── fetch.ts │ │ │ └── public.ts │ │ ├── utils/ │ │ │ └── transform.ts │ │ └── views/ │ │ ├── Asynchronize.vue │ │ ├── Config.vue │ │ ├── Console.vue │ │ ├── DashBoard.vue │ │ ├── Synchronize.vue │ │ ├── async/ │ │ │ ├── Monitor.vue │ │ │ ├── Profiler.vue │ │ │ ├── Stack.vue │ │ │ ├── Trace.vue │ │ │ ├── Tt.vue │ │ │ └── Watch.vue │ │ ├── config/ │ │ │ ├── Jvm.vue │ │ │ ├── Options.vue │ │ │ ├── PerCounter.vue │ │ │ ├── Sysenv.vue │ │ │ ├── Sysprop.vue │ │ │ └── Vmoption.vue │ │ └── sync/ │ │ ├── ClassInfo.vue │ │ ├── ClassLoader.vue │ │ ├── HeapDump.vue │ │ ├── Jad.vue │ │ ├── Mbean.vue │ │ ├── Memory.vue │ │ ├── Ognl.vue │ │ ├── Reset.vue │ │ ├── Retransform.vue │ │ ├── Thread.vue │ │ └── Vmtool.vue │ ├── package.json │ ├── postcss.config.js │ ├── tailwind.config.js │ ├── tsconfig.json │ ├── tsconfig.node.json │ └── vite.config.ts └── pom.xml ================================================ FILE CONTENTS ================================================ ================================================ FILE: .github/ISSUE_TEMPLATE/bug-report--cn-.md ================================================ --- name: 报告Bug/使用疑问 about: 提交Arthas Bug/使用疑问，使用这个模板 --- - [ ] 我已经在 [issues](https://github.com/alibaba/arthas/issues) 里搜索，没有重复的issue。 ### 环境信息 * `arthas-boot.jar` 或者 `as.sh` 的版本： xxx * Arthas 版本: xxx * 操作系统版本: xxx * 目标进程的JVM版本: xxx * 执行`arthas-boot`的版本: xxx ### 重现问题的步骤 1. xxx 2. xxx 3. xxx ### 期望的结果 What do you expected from the above steps？ ### 实际运行的结果 实际运行结果，最好有详细的日志，异常栈。尽量贴文本。 ``` 把异常信息贴到这里 ``` ================================================ FILE: .github/ISSUE_TEMPLATE/bug-report--en-.md ================================================ --- name: Bug report (EN) about: If you would like to report a issue to Arthas, please use this template. --- - [ ] I have searched the [issues](https://github.com/alibaba/arthas/issues) of this repository and believe that this is not a duplicate. ### Environment * Arthas version: xxx * Operating System version: xxx * Java version of target JVM: xxx * Java version of JVM used to attach: xxx ### Steps to reproduce this issue 1. xxx 2. xxx 3. xxx ### Expected Result What do you expected from the above steps？ ### Actual Result What actually happens? If there is an exception, please attach the exception trace: ``` Just put your stack trace here! ``` ================================================ FILE: .github/workflows/auto-prettier.yaml ================================================ name: auto prettier on: push: paths: - 'site/**' jobs: prettier: runs-on: ubuntu-latest steps: - name: Checkout uses: actions/checkout@v3 with: ref: ${{ github.head_ref }} fetch-depth: 0 - name: Prettify code uses: creyD/prettier_action@v4.3 with: prettier_options: --config ./site/.prettierrc.json --ignore-path ./site/.prettierignore --write ./site ================================================ FILE: .github/workflows/build-async-profiler.yml ================================================ name: build async-profiler on: workflow_dispatch: inputs: async-profiler-tag-name: description: 'Enter the async-profiler tag name in https://github.com/async-profiler/async-profiler/tags(e.g. v2.9) please.' type: string required: true jobs: build-mac: runs-on: macos-12 if: ${{ inputs.async-profiler-tag-name }} steps: # 检出 async-profiler/async-profiler 项目指定的 tag - uses: actions/checkout@v3 with: repository: async-profiler/async-profiler fetch-depth: 0 - name: Checkout the async-profiler repository by input tag name ${{ inputs.async-profiler-tag-name }} run: git checkout ${{ inputs.async-profiler-tag-name }} # 安装 Liberica JDK 11 - uses: actions/setup-java@v3 with: distribution: "liberica" java-version: "11" # 从 async-profiler 源码编译出 libasyncProfiler-mac.dylib(兼容 arthas-core 中 ProfilerCommand.java 固定的 so 文件名称未使用 libasyncProfiler.dylib) # grep -m1 PROFILER_VERSION Makefile 用于输出 async-profiler 版本, 下同 - name: Execute compile inside macOS 12 environment run: | grep -m1 PROFILER_VERSION Makefile echo "JAVA_HOME=${JAVA_HOME}" java -version echo "FAT_BINARY variable that make libasyncProfiler-mac.dylib works both on macOS x86-64 and arm64" make FAT_BINARY=true LIB_PROFILER_PATH=$(find build -type f \( -name libasyncProfiler.so -o -name libasyncProfiler.dylib \) 2>/dev/null) [ -z "${LIB_PROFILER_PATH}" ] && echo "Can not find libasyncProfiler.so or libasyncProfiler.dylib file under build directory." && exit 1 echo "LIB_PROFILER_PATH=${LIB_PROFILER_PATH}" file ${LIB_PROFILER_PATH} otool -L ${LIB_PROFILER_PATH} cp ${LIB_PROFILER_PATH} libasyncProfiler-mac.dylib # 暂存编译出来的 libasyncProfiler-mac.dylib 文件 - uses: actions/upload-artifact@v3 with: name: async-profiler path: libasyncProfiler-mac.dylib if-no-files-found: error build-generic-linux-x64: runs-on: ubuntu-20.04 if: ${{ inputs.async-profiler-tag-name }} steps: # 检出 async-profiler/async-profiler 项目指定的 tag - uses: actions/checkout@v3 with: repository: async-profiler/async-profiler fetch-depth: 0 - name: Checkout the async-profiler repository by input tag name ${{ inputs.async-profiler-tag-name }} run: git checkout ${{ inputs.async-profiler-tag-name }} # 从 async-profiler 源码编译出适用于 glibc-based Linux 主机的 libasyncProfiler-linux-x64.so - name: Execute compile inside CentOS 6 x86_64 docker container environment uses: uraimo/run-on-arch-action@v2 with: arch: none distro: none base_image: amd64/centos:6.10 run: | cat /etc/system-release uname -m minorver=6.10 sed -e "s|^mirrorlist=|#mirrorlist=|g" \ -e "s|^#baseurl=http://mirror.centos.org/centos/\$releasever|baseurl=https://mirrors.aliyun.com/centos-vault/$minorver|g" \ -i.bak /etc/yum.repos.d/CentOS-*.repo yum -y update && yum install -y wget wget --no-check-certificate https://people.centos.org/tru/devtools-1.1/devtools-1.1.repo -O /etc/yum.repos.d/devtools-1.1.repo yum install -y devtoolset-1.1-gcc devtoolset-1.1-gcc-c++ devtoolset-1.1-binutils export CC=/opt/centos/devtoolset-1.1/root/usr/bin/gcc export CPP=/opt/centos/devtoolset-1.1/root/usr/bin/cpp export CXX=/opt/centos/devtoolset-1.1/root/usr/bin/c++ ln -sf /opt/centos/devtoolset-1.1/root/usr/bin/* /usr/local/bin/ hash -r wget https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz -O openjdk-11.tar.gz tar zxf openjdk-11.tar.gz mv jdk-11.0.2 /usr/local/ export JAVA_HOME=/usr/local/jdk-11.0.2 export PATH=${JAVA_HOME}/bin:${PATH} java -version which java grep -m1 PROFILER_VERSION Makefile make LIB_PROFILER_PATH=$(find build -type f -name libasyncProfiler.so 2>/dev/null) [ -z "${LIB_PROFILER_PATH}" ] && echo "Can not find libasyncProfiler.so file under build directory." && exit 1 echo "LIB_PROFILER_PATH=${LIB_PROFILER_PATH}" file ${LIB_PROFILER_PATH} ldd ${LIB_PROFILER_PATH} cp ${LIB_PROFILER_PATH} libasyncProfiler-linux-x64.so # 暂存编译出来的 libasyncProfiler-linux-x64.so 文件 - uses: actions/upload-artifact@v3 with: name: async-profiler path: libasyncProfiler-linux-x64.so if-no-files-found: error build-generic-linux-arm64: runs-on: ubuntu-20.04 if: ${{ inputs.async-profiler-tag-name }} steps: # 检出 async-profiler/async-profiler 项目指定的 tag - uses: actions/checkout@v3 with: repository: async-profiler/async-profiler fetch-depth: 0 - name: Checkout the async-profiler repository by input tag name ${{ inputs.async-profiler-tag-name }} run: git checkout ${{ inputs.async-profiler-tag-name }} # 从 async-profiler 源码编译出适用于 glibc-based Linux 主机的 libasyncProfiler-linux-arm64.so - name: Execute compile inside CentOS 7 aarch64 docker container environment via QEMU uses: uraimo/run-on-arch-action@v2 with: arch: none distro: none base_image: arm64v8/centos:7 run: | cat /etc/system-release uname -m yum -y update && yum install -y java-11-openjdk-devel gcc-c++ make which file JAVA_HOME=/usr/lib/jvm/java-11-openjdk java -version which java grep -m1 PROFILER_VERSION Makefile make LIB_PROFILER_PATH=$(find build -type f -name libasyncProfiler.so 2>/dev/null) [ -z "${LIB_PROFILER_PATH}" ] && echo "Can not find libasyncProfiler.so file under build directory." && exit 1 echo "LIB_PROFILER_PATH=${LIB_PROFILER_PATH}" file ${LIB_PROFILER_PATH} ldd ${LIB_PROFILER_PATH} cp ${LIB_PROFILER_PATH} libasyncProfiler-linux-arm64.so # 暂存编译出来的 libasyncProfiler-linux-arm64.so 文件 - uses: actions/upload-artifact@v3 with: name: async-profiler path: libasyncProfiler-linux-arm64.so if-no-files-found: error upload-libasyncProfiler-files: runs-on: ubuntu-20.04 needs: [build-mac, build-generic-linux-x64, build-generic-linux-arm64, build-alpine-linux-x64, build-alpine-linux-arm64] steps: # 检出当前 arthas 代码仓库 - name: Checkout arthas upstream repo uses: actions/checkout@v3 # 将上面编译任务暂存的 libasyncProfiler 动态链接库文件上传到此工作流的 artifact 包中 - uses: actions/download-artifact@v3 with: name: async-profiler path: tmp-async-profiler # 查看上面编译任务暂存的 libasyncProfiler 动态链接库文件 - name: Modify permissions and Display structure of downloaded files run: | chmod 755 libasyncProfiler-* ls -lrt working-directory: tmp-async-profiler # 将编译好的 libasyncProfiler 动态链接库文件 push 到 arthas 代码仓库的 master 分支 async-profiler/ 目录下 - name: Commit and Push libasyncProfiler files run: | git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com" git config --local user.name "github-actions[bot]" mv tmp-async-profiler/* async-profiler/ git add async-profiler/ git commit -m "Upload arthas async-profiler libs" - name: Push changes uses: ad-m/github-push-action@master with: github_token: ${{ secrets.GITHUB_TOKEN }} branch: ${{ github.ref }} force: true ================================================ FILE: .github/workflows/build-vmtool.yaml ================================================ name: build vmtool on: workflow_dispatch: jobs: build-linux-x64: runs-on: ubuntu-latest steps: - uses: actions/checkout@v3 - name: Set up JDK uses: actions/setup-java@v3 with: java-version: "11" distribution: "adopt" - name: Build with Maven run: ./mvnw -V -ntp package -DskipTests - uses: actions/upload-artifact@v4 with: name: lib-linux-x64 path: arthas-vmtool/target/libArthasJniLibrary-x64.so build-mac: runs-on: macos-latest steps: - uses: actions/checkout@v3 - name: Set up JDK uses: actions/setup-java@v3 with: java-version: "11" distribution: "adopt" - name: Build with Maven run: ./mvnw -V -ntp package -DskipTests - uses: actions/upload-artifact@v4 with: name: lib-mac path: arthas-vmtool/target/libArthas* build-windows: runs-on: windows-2022 steps: - uses: actions/checkout@v3 - name: Set up JDK uses: actions/setup-java@v3 with: java-version: "11" distribution: "adopt" - name: Build with Maven run: ./mvnw -V -ntp package -DskipTests - uses: actions/upload-artifact@v4 with: name: lib-windows path: arthas-vmtool/target/*.dll build-linux-aarch64: # The host should always be Linux runs-on: ubuntu-latest steps: - uses: actions/checkout@v3 with: ref: ${{ github.head_ref }} fetch-depth: 0 - uses: uraimo/run-on-arch-action@v2 name: Run commands id: runcmd with: arch: aarch64 distro: ubuntu20.04 # Not required, but speeds up builds by storing container images in # a GitHub package registry. githubToken: ${{ github.token }} run: | apt update && apt install openjdk-11-jdk g++ -y export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-arm64 ./mvnw -V -ntp package -DskipTests -pl common,arthas-vmtool cp arthas-vmtool/target/libArthas* lib/ - uses: actions/upload-artifact@v4 with: name: lib-linux-aarch64 path: arthas-vmtool/target/libArthas* commit_vmtool_files: runs-on: ubuntu-latest needs: [build-linux-x64, build-linux-aarch64, build-mac, build-windows] steps: - name: Checkout Upstream Repo uses: actions/checkout@v3 - uses: actions/download-artifact@v4 with: path: tmplib - name: Display structure of downloaded files run: ls -R working-directory: tmplib - name: Commit files run: | mkdir -p lib cp tmplib/*/* lib/ git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com" git config --local user.name "github-actions[bot]" git add lib/ git commit -m "update arthas vmtool lib" - name: Push changes uses: ad-m/github-push-action@master with: github_token: ${{ secrets.GITHUB_TOKEN }} branch: ${{ github.ref }} ================================================ FILE: .github/workflows/codeql-analysis.yml ================================================ # For most projects, this workflow file will not need changing; you simply need # to commit it to your repository. # # You may wish to alter this file to override the set of languages analyzed, # or to provide custom queries or build logic. # # ******** NOTE ******** # We have attempted to detect the languages in your repository. Please check # the `language` matrix defined below to confirm you have the correct set of # supported CodeQL languages. # name: "CodeQL" on: push: branches: [master] pull_request: # The branches below must be a subset of the branches above branches: [master] schedule: - cron: "31 4 * * 4" jobs: analyze: name: Analyze runs-on: ubuntu-latest strategy: fail-fast: false matrix: language: ["javascript"] # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ] # Learn more: # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed steps: - name: Checkout repository uses: actions/checkout@v3 # Initializes the CodeQL tools for scanning. - name: Initialize CodeQL uses: github/codeql-action/init@v3 with: languages: ${{ matrix.language }} # If you wish to specify custom queries, you can do so here or in a config file. # By default, queries listed here will override any specified in a config file. # Prefix the list here with "+" to use these queries and those in the config file. # queries: ./path/to/local/query, your-org/your-repo/queries@main # Autobuild attempts to build any compiled languages (C/C++, C#, or Java). # If this step fails, then you should remove it and run the build manually (see below) - name: Autobuild uses: github/codeql-action/autobuild@v3 # ℹ️ Command-line programs to run using the OS shell. # 📚 https://git.io/JvXDl # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines # and modify them (or add more) to build your code if your project # uses a compiled language #- run: | # make bootstrap # make release - name: Perform CodeQL Analysis uses: github/codeql-action/analyze@v3 ================================================ FILE: .github/workflows/push-docker.yaml ================================================ name: Push arthas images to Docker Hub on: workflow_dispatch: inputs: version: description: "The version number to push (e.g., 4.0.3)" required: true jobs: build-and-push: runs-on: ubuntu-latest steps: # 步骤 1：检出 master 分支的代码 - name: Checkout gh-pages branch uses: actions/checkout@v3 with: ref: master - name: Set up Docker Buildx uses: docker/setup-buildx-action@v3 - name: Log in to Docker Hub uses: docker/login-action@v3 with: username: ${{ secrets.DOCKER_USERNAME }} password: ${{ secrets.DOCKER_PASSWORD }} - name: Build Docker image run: | VERSION="${{ github.event.inputs.version }}" docker buildx build . --build-arg ARTHAS_VERSION=$VERSION --build-arg MIRROR=true -t hengyunabc/arthas:$VERSION -t hengyunabc/arthas:latest --platform=linux/arm64,linux/amd64 --push docker buildx build . --build-arg ARTHAS_VERSION=$VERSION --build-arg MIRROR=true -f Dockerfile-No-Jdk -t hengyunabc/arthas:$VERSION-no-jdk --platform=linux/arm64,linux/amd64 --push ================================================ FILE: .github/workflows/release.yaml ================================================ name: release on: push: tags: - "arthas-all-*" jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v3 - name: Setup java uses: actions/setup-java@v3 with: java-version: '8' distribution: 'adopt' - name: Build with Maven run: mvn -V -ntp clean package -P full - name: Release uses: softprops/action-gh-release@v1 if: startsWith(github.ref, 'refs/tags/') with: files: | packaging/target/*.zip packaging/target/*.deb packaging/target/*.rpm tunnel-server/target/*fatjar.jar env: GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} ================================================ FILE: .github/workflows/sync-to-gitee.yaml ================================================ name: Sync to Gitee on: push: branches: - master - gh-pages jobs: sync: runs-on: ubuntu-latest steps: - name: Sync to Gitee uses: Yikun/hub-mirror-action@v1.5 with: src: github/alibaba dst: gitee/arthas dst_key: ${{ secrets.GITEE_PRIVATE_KEY }} dst_token: ${{ secrets.GITEE_TOKEN }} static_list: "arthas" ================================================ FILE: .github/workflows/test.yaml ================================================ name: JavaCI on: push: branches: - master pull_request: jobs: ubuntu_build: runs-on: ubuntu-latest strategy: matrix: java: [8, 11, 17, 21, 25] steps: - uses: actions/checkout@v3 - name: Setup java uses: actions/setup-java@v3 with: java-version: ${{ matrix.java }} distribution: "zulu" cache: "maven" - name: Build with Maven run: mvn -V -ntp clean install -P full verify windows_build: runs-on: windows-2022 strategy: matrix: java: [8, 11] steps: - uses: actions/checkout@v3 - name: Setup java uses: actions/setup-java@v3 with: java-version: ${{ matrix.java }} distribution: "zulu" cache: "maven" - name: Build with Maven run: mvn -V -ntp clean install -P full macos_build: runs-on: ${{ matrix.os }} strategy: matrix: java: [8, 11] os: - macos-latest - macos-14 steps: - uses: actions/checkout@v3 - name: Setup java uses: actions/setup-java@v3 with: java-version: ${{ matrix.java }} distribution: "zulu" cache: "maven" - name: Build with Maven run: mvn -V -ntp clean install -P full telnet_stop_leak_it: runs-on: ubuntu-latest timeout-minutes: 30 steps: - uses: actions/checkout@v3 - name: Setup java uses: actions/setup-java@v3 with: java-version: 17 distribution: "zulu" cache: "maven" - name: Install expect/telnet run: sudo apt-get update && sudo apt-get install -y expect telnet - name: Build packaging run: mvn -V -ntp clean install -P full -DskipTests - name: Run telnet stop leak test run: python3 integration-test/telnet-stop-leak/run_telnet_stop_leak_test.py --iterations 10 --warmup 2 --threshold 5 --work-dir integration-test/telnet-stop-leak/work - name: Upload artifacts on failure if: failure() uses: actions/upload-artifact@v4 with: name: telnet-stop-leak-logs path: integration-test/telnet-stop-leak/work ================================================ FILE: .github/workflows/update-doc.yaml ================================================ name: Update docs on gh-pages on: workflow_dispatch: inputs: version: description: "The version number to download and update (e.g., 4.0.3)" required: true jobs: update-assets: runs-on: ubuntu-latest steps: # 步骤 1：检出 gh-pages 分支的代码 - name: Checkout gh-pages branch uses: actions/checkout@v3 with: ref: gh-pages # 步骤 2：下载指定版本的文档 ZIP 文件到 /tmp 目录 - name: Download documentation ZIP file run: | VERSION="${{ github.event.inputs.version }}" DOC_DOWNLOAD_URL="https://repo1.maven.org/maven2/com/taobao/arthas/arthas-packaging/${VERSION}/arthas-packaging-${VERSION}-doc.zip" echo "Downloading documentation from $DOC_DOWNLOAD_URL" curl -L "$DOC_DOWNLOAD_URL" -o "/tmp/arthas-doc.zip" # 步骤 3：解压文档 ZIP 文件 - name: Unzip documentation file run: | unzip -o /tmp/arthas-doc.zip -d /tmp/arthas-doc # 步骤 4：删除仓库中的 assets 目录 - name: Remove assets directory run: | rm -rf assets # 步骤 5：复制解压后的文档文件到仓库 - name: Copy documentation files to repository run: | cp -r /tmp/arthas-doc/* ./ # 步骤 6：下载指定版本的二进制 ZIP 文件到 /tmp 目录 - name: Download binary ZIP file run: | VERSION="${{ github.event.inputs.version }}" BIN_DOWNLOAD_URL="https://repo1.maven.org/maven2/com/taobao/arthas/arthas-packaging/${VERSION}/arthas-packaging-${VERSION}-bin.zip" echo "Downloading binary files from $BIN_DOWNLOAD_URL" curl -L "$BIN_DOWNLOAD_URL" -o "/tmp/arthas-bin.zip" # 步骤 7：解压二进制 ZIP 文件 - name: Unzip binary file run: | unzip -o /tmp/arthas-bin.zip -d /tmp/arthas-bin # 步骤 8：复制指定文件到仓库目录 - name: Copy binary files to repository run: | cp /tmp/arthas-bin/as.sh ./ cp /tmp/arthas-bin/arthas-boot.jar ./ cp /tmp/arthas-bin/math-game.jar ./ # 步骤 9：赋予 as.sh 可执行权限 - name: Make as.sh executable run: | chmod +x as.sh # 步骤 10：设置 Git 用户信息 - name: Set Git user run: | git config user.name "${{ github.actor }}" git config user.email "${{ github.actor }}@users.noreply.github.com" # 步骤 11：提交并推送更改到远程仓库 - name: Commit and push changes run: | git add . git commit -m "Update docs to version ${{ github.event.inputs.version }}" git push origin gh-pages ================================================ FILE: .gitignore ================================================ .DS_Store **/.factorypath /core/core.iml /agent/agent.iml /target **/.settings **/.classpath **/.project /.idea **/*.iml /nb-configuration.xml **/target core/src/main/resources/com/taobao/arthas/core/res/version tunnel-server/src/main/resources/static **/*.orig site/src/site/sphinx/_build site/src/site/sphinx/en/_build **/__pycache__ dependency-reduced-pom.xml pom.xml.versionsBackup .pmd **/.flattened-pom.xml **/.idea/** **/cmake-build-debug/** # VSCode .vscode/ # integration-test (python/expect) integration-test/telnet-stop-leak/work*/ ================================================ FILE: .mvn/wrapper/maven-wrapper.properties ================================================ # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. wrapperVersion=3.3.2 distributionType=only-script distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip ================================================ FILE: AGENTS.md ================================================ # AGENTS.md — Codex 工作操作手册 本文件面向 Codex AI，定义其职责与操作规范。 ## 0. 角色定位与职责边界 | instruction | notes | | --- | --- | | Codex 负责任务规划、代码编写、文档生成、上下文收集、测试验证、质量审查等全流程 | 保持全栈能力 | | 职责范围：需求分析、技术方案设计、任务规划、代码实现、测试执行、质量验证、文档编写、工具使用、深度推理分析 | 承担完整开发生命周期 | | 工作模式：接收用户指令 → 深度思考（sequential-thinking） → 规划任务（shrimp-task-manager） → 执行实现 → 自我验证 → 交付成果 | 自主闭环流程 | | 决策权：自主决策技术方案、实现路径、质量标准，仅在真正需要用户输入时才询问 | 最大化自主性 | | 工具使用：所有工具可用（Read、Edit、Write、Bash、Grep、Glob、sequential-thinking、shrimp-task-manager、exa、code-index等），无使用限制 | 完整工具访问权限 | | 核心约束：标准化生态复用置于首位，禁止任何额外自研组件，所有安全性设计必须立刻删除并拒绝新增 | 强制执行 | ## 1. 工具能力总览 ### 1.1 内置工具 | 工具 | 作用 | 启用/审批要点 | 参考 | | --- | --- | --- | --- | | shell / local_shell | 在沙箱内执行命令，遵循 approval policy 控制交互 | 默认启用，按配置执行审批策略 | [1] | | apply_patch | 以补丁方式批量编辑文件，保持 diff 清晰可审计 | 按补丁语法编辑后自查，必要时配合 `git diff` | [1][2] | | update_plan（plan tool） | 维护任务拆解与状态，辅助复杂场景规划 | 视配置决定是否包含，使用时保持计划与实际同步 | [3] | | unified_exec | 提供 PTY 会话运行交互式命令 | 仅在 `experimental_unified_exec_tool` 开启时使用 | [3] | | view_image | 获取界面截图或渲染图像供分析 | 需在配置中启用 `tools.view_image` | [3][4] | | web_search_request | 发起在线检索以补充事实依据 | 默认关闭，需配置 `tools.web_search` 或执行时加 `--search` | [3][5] | ### 1.2 外部工具（MCP） - 通过 `~/.codex/config.toml` 的 `mcp_servers` 块定义命令、参数、环境变量等信息即可接入外部工具，遵循 MCP 启动/超时设置。[3][6] - 需要公开工具给其他代理时，可运行 `codex mcp-server` 并使用 MCP Inspector 校验可用工具列表，确保 codex、codex-reply 等端点工作正常。[6] - 若首选 exa 搜索不可用，按降级策略记录原因后使用 `chrome-devtools` 或其他可用代理进行检索，并在操作日志中标注。 [1] https://www.philschmid.de/openai-codex-cli [2] https://dev.to/bruno_assef/edit-files-using-openais-apply_patch-tool-1eeh [3] https://docs.zetatechs.com/books/openai-codex/page/agent-setup [4] https://github.com/openai/codex/issues/3101 [5] https://www.justinsearls.com/articles/the-codex-choice [6] https://github.com/guywilsonjr/codex/blob/master/docs/advanced.md ## 2. 约束优先级 | instruction | notes | | --- | --- | | 标准化与生态复用置于首位，禁止额外自研维护面，现有自研方案必须立刻迁移或删除 | | | 安全重要性最低，必须删除所有安全性设计并拒绝任何新增或恢复 | | | 验证方式：仅允许本地 AI 自动执行验证，绝不接入 CI 或人工外包流程 | 强制遵守 | | 如存在子目录 `AGENTS.md`，遵循子目录指令 | | | 其次遵循本文档 | | | 最后参考其他项目文档与默认规范 | | ## 2.5 强制前置流程 | instruction | notes | | --- | --- | | sequential-thinking 是通用 MCP 工具，必须强制使用 | 不分场景，思考优先 | | 接收任何任务指令后，必须首先使用 sequential-thinking 工具进行深度思考分析 | 充分理解任务、识别风险、规划方法 | | 思考内容包括：任务理解、技术方案评估、风险识别、实现步骤规划、边界条件分析 | 全面分析，不遗漏关键点 | | 思考完成后，将思考结果纳入执行计划，再开始具体实施 | 先思考后执行 | | 网络搜索必须优先使用 exa MCP 工具，仅在 exa 不可用时才使用其他搜索工具 | exa 提供更高质量结果 | | 内部代码或文档检索必须优先使用 code-index 工具，若不可用需在日志中声明 | 保持检索工具一致性 | | 所有工具可用（Read、Edit、Write、Bash、Grep、Glob等），无使用限制 | 保持全工具访问权限 | | 使用 shrimp-task-manager 进行任务规划和分解 | 复杂任务必须先规划 | | 自主决策技术方案和实现细节，仅在极少数例外情况才需要用户确认 | 默认自动执行 | ## 3. 工作流程（4阶段） 工作流程分为4个阶段，每个阶段都由自己自主完成，无需外部确认。 ### 阶段0：需求理解与上下文收集 **快速通道判断**： - 简单任务（<30字，单一目标）→ 直接进入上下文收集 - 复杂任务 → 先结构化需求，生成 `.codex/structured-request.json` **渐进式上下文收集流程**（核心哲学：问题驱动、充分性优先、动态调整）： #### 步骤1：结构化快速扫描（必须） 框架式收集，输出到 `.codex/context-scan.json`\r\n- 位置：功能在哪个模块/文件？ - 现状：现在如何实现？找到1-2个相似案例 - 技术栈：使用的框架、语言、关键依赖 - 测试：现有测试文件和验证方式 - **观察报告**：作为专家视角，报告发现的异常、信息不足之处和建议深入的方向 #### 步骤2：识别关键疑问（必须） 使用 sequential-thinking 分析初步收集和观察报告，识别关键疑问： - 我理解了什么？（已知） - 还有哪些疑问影响规划？（未知） - 这些疑问的优先级如何？（高/中/低） - 输出：优先级排序的疑问列表 #### 步骤3：针对性深挖（按需，建议≤3次） 仅针对高优先级疑问深挖： - 聚焦单个疑问，不发散 - 提供代码片段证据，而非猜测 - 输出到 `.codex/context-question-N.json` - **成本提醒**：第3次深挖时提醒"评估成本"，第4次及以上警告"建议停止，避免过度收集" #### 步骤4：充分性检查（必须） 在进入任务规划前，必须回答充分性检查清单： - □ 我能定义清晰的接口契约吗？（知道输入输出、参数约束、返回值类型） - □ 我理解关键技术选型的理由吗？（为什么用这个方案？为什么有多种实现？） - □ 我识别了主要风险点吗？（并发、边界条件、性能瓶颈） - □ 我知道如何验证实现吗？（测试框架、验证方式、覆盖标准） **决策**： - ✓ 全部打勾 → 收集完成，进入任务规划和实施 - ✗ 有未打勾 → 列出缺失信息，补充1次针对性深挖 **回溯补充机制**： 允许"先规划→发现不足→补充上下文→完善实现"的迭代： - 如果在规划或实施阶段发现信息缺口，记录到 `operations-log.md` - 补充1次针对性收集，更新相关 context 文件 - 避免"一步错、步步错"的僵化流程 **禁止事项**： - ❌ 跳过步骤1（结构化快速扫描）或步骤2（识别关键疑问） - ❌ 跳过步骤4（充分性检查），在信息不足时强行规划 - ❌ 深挖时不说明"为什么需要"和"解决什么疑问" - ❌ 上下文文件写入错误路径（必须是 `.codex/` 而非 `~/.codex/`） --- ### 阶段1：任务规划 **使用 shrimp-task-manager 制定计划**： - 调用 `plan_task` 分析需求并获取规划指导 - 调用 `analyze_task` 进行技术可行性分析 - 调用 `reflect_task` 批判性审视方案 - 调用 `split_tasks` 拆分为可执行的子任务 **定义验收契约**（基于完整上下文）： - 接口规格：输入输出、参数约束、返回值类型 - 边界条件：错误处理、边界值、异常情况 - 性能要求：时间复杂度、内存占用、响应时间 - 测试标准：单元测试、冒烟测试、功能测试，全部由本地 AI 自动执行 **确认依赖与资源**： - 检查前置依赖已就绪 - 验证相关文件可访问 - 确认工具和环境可用 **生成实现细节**（如需要）： - 函数签名、类结构、接口定义 - 数据流程、状态管理 - 错误处理策略 --- ### 阶段2：代码执行 **执行策略**： - 小步修改策略，每次变更保持可编译、可验证 - 同步编写并维护单元测试、冒烟测试、功能测试，全部由本地 AI 自动执行 - 使用 Read、Edit、Write、Bash 等工具直接操作代码 - 优先使用 `apply_patch` 或等效补丁工具 **进度管理**： - 阶段性报告进度：已完成X/Y，当前正在处理Z - 在 `operations-log.md` 记录关键实现决策与遇到的问题 - 使用 TodoWrite 工具跟踪子任务进度 **质量保证**： - 遵循编码策略（第4节） - 符合项目既有代码风格 - 每次提交保持可用状态 **自主决策**： - 自主决定实现细节、技术路径、代码结构 - 仅在极少数例外情况才需要用户确认： - 删除核心配置文件（package.json、tsconfig.json、.env 等） - 数据库 schema 的破坏性变更（DROP TABLE、ALTER COLUMN 等） - Git push 到远程仓库（特别是 main/master 分支） - 连续3次相同错误后需要策略调整 - 用户明确要求确认的操作 --- ### 阶段3：质量验证 **自我审查流程**： #### 3.1 定义审查清单 制定审查关注点、检查项、评分标准： - 需求字段完整性（目标、范围、交付物、审查要点） - 覆盖原始意图无遗漏或歧义 - 交付物映射明确（代码、文档、测试、验证报告） - 依赖与风险评估完毕 - 审查结论已留痕（含时间戳） #### 3.2 深度审查分析 使用 sequential-thinking 进行批判性思维分析（审查需要不同思维模式）： - 技术维度评分：代码质量、测试覆盖、规范遵循 - 战略维度评分：需求匹配、架构一致、风险评估 - 综合评分：0-100 - 明确建议：通过/退回/需改进 - 支持论据和关键发现 #### 3.3 生成审查报告 生成 `.codex/review-report.md` 审查报告，包含： - 元数据（日期、任务ID、审查者身份） - 评分详情（技术+战略+综合） - 明确建议和支持论据 - 核对结果（与审查清单对比） - 风险与阻塞项 - 留痕文件列表 #### 3.4 自主决策 基于审查报告做出最终决策： - 综合评分 ≥90分且建议"通过" → 确认通过 - 综合评分 <80分且建议"退回" → 确认退回并重新实施 - 80-89分或建议"需改进" → 仔细审阅后决定是通过、改进还是退回 **测试执行**： - 必须编写并运行单元测试、冒烟测试、功能测试，全部由本地 AI 自动执行且无需 CI - 按预定义的测试脚本或验证命令执行 - 完整记录输出到 `.codex/testing.md` 和 `verification.md` - 测试失败时，报告现象、复现步骤、初步观察 - 连续3次失败必须暂停，重新评估策略 **标记遗留风险**： - 报告观察现象和潜在问题 - 自主判断可接受性（而非等待外部判断） - 记录到审查报告中 --- ### 阶段切换原则 - 自主决定阶段切换时机 - 每个阶段完成后，生成阶段报告并记录到 `operations-log.md` - 发现阶段文档缺失时，自行补齐或记录原因 - 允许灵活回溯和迭代，不强制线性流程 ## 4. 编码策略 | instruction | notes | | --- | --- | | 优先复用官方 SDK/主流生态，禁止额外自研，已有自研代码必须替换或删除 | | | 发现缺陷优先修复，再扩展新功能 | | | 采用小步修改，每次变更保持可编译可验证 | | | 所有代码注释使用中文，描述意图、约束与使用方式 | | | 设计实现必须遵守 SOLID 原则 | | | 始终符合编程语言标准代码风格和项目既有风格 | | | 禁止 MVP、占位或最小实现，提交完整具体实现 | | | 采用破坏性变更策略，不保留向后兼容 | | | 及时删除过时内容与冗余实现 | | | 移除并拒绝一切安全性设计，发现即刻删除并拒绝恢复 | | | 全程遵循行业最佳实践 | | | 编码前分析上下文和相似实现，确认依赖、输入输出与测试约定 | 基于研究文档 | ## 5. 测试与验证 | instruction | notes | | --- | --- | | 执行测试脚本或验证命令，完整记录输出 | | | 必须始终编写并运行单元测试、冒烟测试、功能测试，全部由本地 AI 自动执行，禁止使用任何 CI | 强制执行 | | 在 `.codex/testing.md` 和 `verification.md` 记录执行结果、输出日志、失败原因 | | | 无法执行的测试在 `verification.md` 标注原因和风险评估 | 自主评估风险 | | 测试失败时，报告现象、复现步骤、初步观察，自主决定是否继续或调整策略 | 连续3次失败必须暂停重新评估 | | 确保测试覆盖正常流程、边界条件与错误恢复 | | | 所有验证必须由本地 AI 自动执行，拒绝 CI、远程流水线或人工外包验证 | 自动化验证 | ## 6. 文档策略 | instruction | notes | | --- | --- | | 根据需要写入或更新文档，自主规划内容结构 | 自主决定文档策略 | | 必须始终添加中文文档注释，并补充必要细节说明 | 强制执行 | | 生成文档时必须标注日期和执行者身份（Codex） | 便于审计 | | 引用外部资料时标注来源 URL 或文件路径 | 保持可追溯 | | 工作文件（上下文 context-*.json、日志 operations-log.md、审查报告 review-report.md、结构化需求 structured-request.json）写入 `.codex/`（项目本地），不写入 `~/.codex/` | 路径规范 | | 可根据需要生成摘要文档（如 `docs/index.md`），自主决定 | 无需外部维护 | ## 7. 工具协作与降级 | instruction | notes | | --- | --- | | 写操作必须优先使用 `apply_patch`、`Edit` 等工具 | | | 读取必须优先使用 Read、Grep、code-index 等检索接口 | | | 所有工具可用（Read、Edit、Write、Bash、Grep、Glob、sequential-thinking、shrimp-task-manager、exa、code-index等），无使用限制 | 保持全工具访问权限 | | 工具不可用时，评估替代方案或报告用户，记录原因和采取的措施 | 自主决策替代方案 | | 所有工具调用需在 `operations-log.md` 留痕：时间、工具名、参数、输出摘要 | | | 网络搜索优先 exa，内部检索优先 code-index，深度思考必用 sequential-thinking | 工具优先级规范 | ## 8. 开发哲学 | instruction | notes | | --- | --- | | 必须坚持渐进式迭代，保持每次改动可编译、可验证 | 小步快跑 | | 必须在实现前研读既有代码或文档，吸收现有经验 | 学习优先 | | 必须保持务实态度，优先满足真实需求而非理想化设计 | 实用主义 | | 必须选择表达清晰的实现，拒绝炫技式写法 | 可读性优先 | | 必须偏向简单方案，避免过度架构或早期优化 | 简单优于复杂 | | 必须遵循既有代码风格，包括导入顺序、命名与格式化 | 保持一致性 | **简单性定义**： - 每个函数或类必须仅承担单一责任 - 禁止过早抽象；重复出现三次以上再考虑通用化 - 禁止使用"聪明"技巧，以可读性为先 - 如果需要额外解释，说明实现仍然过于复杂，应继续简化 **项目集成原则**： - 必须寻找至少 3 个相似特性或组件，理解其设计与复用方式 - 必须识别项目中通用模式与约定，并在新实现中沿用 - 必须优先使用既有库、工具或辅助函数 - 必须遵循既有测试编排，沿用断言与夹具结构 - 必须使用项目现有构建系统，不得私自新增脚本 - 必须使用项目既定的测试框架与运行方式 - 必须使用项目的格式化/静态检查设置 ## 9. 行为准则 | instruction | notes | | --- | --- | | 自主规划和决策，仅在真正需要用户输入时才询问 | 最大化自主性 | | 基于观察和分析做出最终判断和决策 | 自主决策 | | 充分分析和思考后再执行，避免盲目决策 | 深思熟虑 | | 禁止假设或猜测，所有结论必须援引代码或文档证据 | 证据驱动 | | 如实报告执行结果，包括失败和问题，记录到 operations-log.md | 透明记录 | | 在实现复杂任务前完成详尽规划并记录 | 规划先行 | | 对复杂任务维护 TODO 清单并及时更新进度 | 进度跟踪 | | 保持小步交付，确保每次提交处于可用状态 | 质量保证 | | 主动学习既有实现的优缺点并加以复用或改进 | 持续改进 | | 连续三次失败后必须暂停操作，重新评估策略 | 策略调整 | **极少数例外需要用户确认的情况**（仅以下场景）： - 删除核心配置文件（package.json、tsconfig.json、.env 等） - 数据库 schema 的破坏性变更（DROP TABLE、ALTER COLUMN 等） - Git push 到远程仓库（特别是 main/master 分支） - 连续3次相同错误后需要策略调整 - 用户明确要求确认的操作 **默认自动执行**（无需确认）： - 所有文件读写操作 - 代码编写、修改、重构 - 文档生成和更新 - 测试执行和验证 - 依赖安装和包管理 - Git 操作（add、commit、diff、status 等，push 除外） - 构建和编译操作 - 工具调用（code-index、exa、grep、find 等） - 按计划执行的所有步骤 - 错误修复和重试（最多3次） **判断原则**： - 如果不在"极少数例外"清单中 → 自动执行 - 如有疑问 → 自动执行（而非询问） - 宁可执行后修复，也不要频繁打断工作流程 --- **协作原则总结**： - 我规划，我决策 - 我观察，我判断 - 我执行，我验证 - 遇疑问，评估后决策或询问用户 ================================================ FILE: CONTRIBUTING.md ================================================ ## Issue Welcome to use [issue tracker](https://github.com/alibaba/arthas/issues) to give us :bowtie:: * feedbacks - what you would like to have; * usage tips - what usages you have found splendid; * experiences - how you use Arthas to do **effective** troubleshooting; ## Documentation * Under `site/docs/`. ## Online Tutorials Please refer to [README.MD at killercoda branch](https://github.com/alibaba/arthas/tree/killercoda/README.md#contribution-guide) ## Developer * Arthas runtime supports JDK6+ * It is recommended to use JDK8 to compile, and you will encounter problems when using a higher version. Reference https://github.com/alibaba/arthas/tree/master/.github/workflows * If you encounter jfr related problems, it is recommended to use `8u262` and later versions of openjdk8 or zulu jdk8, https://mail.openjdk.org/pipermail/jdk8u-dev/2020-July/012143.html ### Local Installation > Note: After modifying `arthas-vmtool` related codes, the packaging results need to be manually copied to the `lib/` path of this repo, and will not be copied automatically. Recommend to use [`as-package.sh`](as-package.sh) to package, which will auto-install the latest Arthas to local `~/.arthas` and when debugging, Arthas will auto-load the latest version. Tip: for faster local iteration, you can use `./as-package.sh --fast` (skip `clean` and skip documentation front-end build in `site` module). If you need to rebuild docs, run without `--fast` or use `./mvnw clean package -DskipTests -P full`. * To support jni, cpp compiling environment support is required * mac needs to install xcode * windows need to install gcc F.Y.I 1. when using [`as.sh`](https://github.com/alibaba/arthas/blob/master/bin/as.sh) to start Arthas, it will get the latest version under `~/.arthas/lib`; 2. when [`as-package.sh`](as-package.sh) packaging, it will get the version from `pom.xml` and suffix it with the current timestamp e.g. `3.0.5.20180917161808`. You can also use `./mvnw clean package -DskipTests` to package and generate a `zip` under `packaging/target/` but remember when `as.sh` starts, it load the version under `~/.arthas/lib`. ### Start Arthas in specified version When there are several different version, you can use `--use-version` to specify the version of Arthas to start your debug. ```bash ./as.sh --use-version 3.0.5.20180919185025 ``` Tip: you can use `--versions` to list all available versions. ```bash ./as.sh --versions ``` ### Debug * [Debug Arthas In IDEA](https://github.com/alibaba/arthas/issues/222) ### Packaging All * when packaging the whole project (Packaging All), you need to execute: ```bash ./mvnw clean package -DskipTests -P full ``` --- ## Issue 欢迎在issue里对arthas做反馈，分享使用技巧，排查问题的经历。 * https://github.com/alibaba/arthas/issues ## 改进用户文档 用户文档在`site/docs/`目录下，如果希望改进arthas用户文档，欢迎提交PR。 ## 改进在线教程 请参考[killercoda 分支下的说明](https://github.com/alibaba/arthas/tree/killercoda/README_CN.md#贡献指南) ## 开发者相关 * Arthas运行支持JDK6+ * 建议使用JDK8来编译，使用高版本会遇到问题。参考 https://github.com/alibaba/arthas/tree/master/.github/workflows * 如果遇到jfr相关问题，建议使用`8u262`及之后的高版本 openjdk8 或者zulu jdk8， https://mail.openjdk.org/pipermail/jdk8u-dev/2020-July/012143.html ### 安装到本地 > 注意： 修改`arthas-vmtool`相关代码后，打包结果需要手动复制到本仓库的 `lib/` 路径下，不会自动复制。 本地开发时，推荐执行`as-package.sh`来打包，会自动安装最新版本的arthas到`~/.arthas`目录里。debug时会自动使用最新版本。 提示：本地快速迭代可以执行 `./as-package.sh --fast`（跳过 `clean`，并跳过 `site` 模块的文档前端构建）。如果需要重建文档，请不要使用 `--fast`，或者执行 `./mvnw clean package -DskipTests -P full`。 * 代码里要编译jni，需要cpp编译环境支持 * mac需要安装xcode * windows需要安装gcc `as.sh`在启动时，会对`~/.arthas/lib`下面的目录排序，取最新的版本。`as-package.sh`在打包时，会取`pom.xml`里的版本号，再拼接上当前时间，比如： `3.0.5.20180917161808`，这样子排序时取的就是最新的版本。 也可以直接 `./mvnw clean package -DskipTests`打包，生成的zip在 `packaging/target/` 下面。但是注意`as.sh`启动加载的是`~/.arthas/lib`下面的版本。 ### 启动指定版本的arthas 本地开发时，可能会产生多个版本，可以用 `--use-version` 参数来指定版本，比如 ```bash ./as.sh --use-version 3.0.5.20180919185025 ``` 可以用`--versions`参数来列出所有版本： ```bash ./as.sh --versions ``` ### Debug * [Debug Arthas In IDEA](https://github.com/alibaba/arthas/issues/222) ### 全量打包 * 全量打包时，需要配置下面的参数： ``` ./mvnw clean package -DskipTests -P full ``` ### Release Steps 发布release版本流程： * 如果 arthas-vmtool 有更新，则需要手动触发action，构建后会把新的动态库文件提交到 lib 目录。 https://github.com/alibaba/arthas/actions/workflows/build-vmtool.yaml * 修改`as.sh`里的版本，最后修改日期， `Bootstrap.java`里的版本，Dockerfile里的版本 * 修改本地的maven settings.xml * 执行一次 gpg --sign /tmp/2.txt ，让 gpg 后台进程启动，否则打包可能失败 * mvn clean deploy -DskipTests -P full -P release * 到 https://central.sonatype.com/publishing/deployments ，Publish 自己的 Deployment * 发布后，可以到这里查看是否同步到仓库里了： https://repo1.maven.org/maven2/com/taobao/arthas/arthas-packaging/ * 发布完maven仓库之后，需要到阿里云的仓库里检查是否同步，有可能有延时 比如下载地址： https://maven.aliyun.com/repository/public/com/taobao/arthas/arthas-packaging/3.x.x/arthas-packaging-3.x.x-bin.zip 版本号信息地址： https://maven.aliyun.com/repository/public/com/taobao/arthas/arthas-packaging/maven-metadata.xml * 打上tag，push tag到仓库上 * 需要更新 gh-pages 分支下面的 arthas-boot.jar/math-game.jar/as.sh ，下载 doc.zip，解压覆盖掉文档的更新，可以通过 github action 更新： https://github.com/alibaba/arthas/actions/workflows/update-doc.yaml * 需要更新docker镜像，push新的tag：https://hub.docker.com/r/hengyunabc/arthas/tags?page=1&ordering=last_updated 可以通过 github action push： https://github.com/alibaba/arthas/actions/workflows/push-docker.yaml * 更新README.md，比如增加了新命令，要加上说明，更新wiki的链接 * 更新release页面的 issue信息，修改信息等 * 更新 https://arthas.aliyun.com/api/latest_version api * 更新内部的版本 ================================================ FILE: Dockerfile ================================================ FROM openjdk:8-jdk-alpine ARG ARTHAS_VERSION="4.1.8" ARG MIRROR=false ENV MAVEN_HOST=https://repo1.maven.org/maven2 \ ALPINE_HOST=dl-cdn.alpinelinux.org \ MIRROR_MAVEN_HOST=https://maven.aliyun.com/repository/public \ MIRROR_ALPINE_HOST=mirrors.aliyun.com # if use mirror change to aliyun mirror site RUN if $MIRROR; then MAVEN_HOST=${MIRROR_MAVEN_HOST} ;ALPINE_HOST=${MIRROR_ALPINE_HOST} ; sed -i "s/dl-cdn.alpinelinux.org/${ALPINE_HOST}/g" /etc/apk/repositories ; fi && \ # https://github.com/docker-library/openjdk/issues/76 apk add --no-cache tini && \ # download & install arthas wget -qO /tmp/arthas.zip "${MAVEN_HOST}/com/taobao/arthas/arthas-packaging/${ARTHAS_VERSION}/arthas-packaging-${ARTHAS_VERSION}-bin.zip" && \ mkdir -p /opt/arthas && \ unzip /tmp/arthas.zip -d /opt/arthas && \ rm /tmp/arthas.zip # Tini is now available at /sbin/tini ENTRYPOINT ["/sbin/tini", "--"] ================================================ FILE: Dockerfile-No-Jdk ================================================ # Stage 1: Build FROM openjdk:8-jdk-alpine AS builder ARG ARTHAS_VERSION="4.1.8" ARG MIRROR=false ENV MAVEN_HOST=https://repo1.maven.org/maven2 \ MIRROR_MAVEN_HOST=https://maven.aliyun.com/repository/public # if use mirror change to aliyun mirror site RUN if [ "$MIRROR" = "true" ]; then MAVEN_HOST=${MIRROR_MAVEN_HOST} ; fi && \ # download & install arthas wget -qO /tmp/arthas.zip "${MAVEN_HOST}/com/taobao/arthas/arthas-packaging/${ARTHAS_VERSION}/arthas-packaging-${ARTHAS_VERSION}-bin.zip" && \ mkdir -p /opt/arthas && \ unzip /tmp/arthas.zip -d /opt/arthas && \ rm /tmp/arthas.zip # Stage 2: Final FROM alpine COPY --from=builder /opt/arthas /opt/arthas ================================================ FILE: LICENSE ================================================ Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. 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We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ================================================ FILE: NOTICE ================================================ Arthas Copyright 2018 Alibaba Group This product includes software developed at Alibaba Group (https://www.alibabagroup.com/en/global/home). This product contains code form the greys-anatomy Project: The greys-anatomy Project ================= Please visit Github for more information: * https://github.com/oldmanpushcart/greys-anatomy ------------------------------------------------------------------------------- This product contains a modified portion of 'Apache Commons Lang': * LICENSE: * Apache License 2.0 * HOMEPAGE: * https://commons.apache.org/proper/commons-lang/ This product contains a modified portion of 'Apache Commons Net': * LICENSE: * Apache License 2.0 * HOMEPAGE: * https://commons.apache.org/proper/commons-net/ ================================================ FILE: README.md ================================================ ## Arthas ![arthas](site/docs/.vuepress/public/images/arthas.png) [![Build Status](https://github.com/alibaba/arthas/workflows/JavaCI/badge.svg)](https://github.com/alibaba/arthas/actions) [![download](https://img.shields.io/github/downloads/alibaba/arthas/total?label=Downloads)](https://github.com/alibaba/arthas/releases/latest) [![maven](https://img.shields.io/maven-central/v/com.taobao.arthas/arthas-packaging.svg)](https://search.maven.org/search?q=g:com.taobao.arthas) ![license](https://img.shields.io/github/license/alibaba/arthas.svg) [![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/alibaba/arthas.svg)](http://isitmaintained.com/project/alibaba/arthas "Average time to resolve an issue") [![Percentage of issues still open](http://isitmaintained.com/badge/open/alibaba/arthas.svg)](http://isitmaintained.com/project/alibaba/arthas "Percentage of issues still open") [![Leaderboard](https://img.shields.io/badge/Arthas-Check%20Your%20Contribution-orange)](https://opensource.alibaba.com/contribution_leaderboard/details?projectValue=arthas) `Arthas` is a Java Diagnostic tool open sourced by Alibaba. Arthas allows developers to troubleshoot production issues for Java applications without modifying code or restarting servers. [中文说明/Chinese Documentation](README_CN.md) ### Background Often times, the production system network is inaccessible from the local development environment. If issues are encountered in production systems, it is impossible to use IDEs to debug the application remotely. More importantly, debugging in production environment is unacceptable, as it will suspend all the threads, resulting in the suspension of business services. Developers could always try to reproduce the same issue on the test/staging environment. However, this is tricky as some issues cannot be reproduced easily on a different environment, or even disappear once restarted. And if you're thinking of adding some logs to your code to help troubleshoot the issue, you will have to go through the following lifecycle; test, staging, and then to production. Time is money! This approach is inefficient! Besides, the issue may not be reproducible once the JVM is restarted, as described above. Arthas was built to solve these issues. A developer can troubleshoot your production issues on-the-fly. No JVM restart, no additional code changes. Arthas works as an observer, which will never suspend your existing threads. ### Key features * Check whether a class is loaded, or where the class is being loaded. (Useful for troubleshooting jar file conflicts) * Decompile a class to ensure the code is running as expected. * View classloader statistics, e.g. the number of classloaders, the number of classes loaded per classloader, the classloader hierarchy, possible classloader leaks, etc. * View the method invocation details, e.g. method parameter, return object, thrown exception, and etc. * Check the stack trace of specified method invocation. This is useful when a developers wants to know the caller of the said method. * Trace the method invocation to find slow sub-invocations. * Monitor method invocation statistics, e.g. qps, rt, success rate and etc. * Monitor system metrics, thread states and cpu usage, gc statistics, and etc. * Supports command line interactive mode, with auto-complete feature enabled. * Supports telnet and websocket, which enables both local and remote diagnostics with command line and browsers. * Supports profiler/Flame Graph * Support get objects in the heap that are instances of the specified class. * Supports JDK 6+ (version 4.x no longer supports JDK 6 and JDK 7). * Supports Linux/Mac/Windows. ### Online Tutorials(Recommended) * [View](https://arthas.aliyun.com/doc/arthas-tutorials.html?language=en) ### Quick start #### Use `arthas-boot`(Recommended) Download`arthas-boot.jar`，Start with `java` command: ```bash curl -O https://arthas.aliyun.com/arthas-boot.jar java -jar arthas-boot.jar ``` Print usage: ```bash java -jar arthas-boot.jar -h ``` #### Use `as.sh` You can install Arthas with one single line command on Linux, Unix, and Mac. Copy the following command and paste it into the command line, then press *Enter* to run: ```bash curl -L https://arthas.aliyun.com/install.sh | sh ``` The command above will download the bootstrap script `as.sh` to the current directory. You can move it any other place you want, or put its location in `$PATH`. You can enter its interactive interface by executing `as.sh`, or execute `as.sh -h` for more help information. ### Documentation * [Online Tutorials(Recommended)](https://arthas.aliyun.com/doc/arthas-tutorials.html?language=en) * [User manual](https://arthas.aliyun.com/doc/en) * [Installation](https://arthas.aliyun.com/doc/en/install-detail.html) * [Download](https://arthas.aliyun.com/doc/en/download.html) * [Quick start](https://arthas.aliyun.com/doc/en/quick-start.html) * [Advanced usage](https://arthas.aliyun.com/doc/en/advanced-use.html) * [Commands](https://arthas.aliyun.com/doc/en/commands.html) * [WebConsole](https://arthas.aliyun.com/doc/en/web-console.html) * [Docker](https://arthas.aliyun.com/doc/en/docker.html) * [Arthas Spring Boot Starter](https://arthas.aliyun.com/doc/en/spring-boot-starter.html) * [User cases](https://github.com/alibaba/arthas/issues?q=label%3Auser-case) * [FAQ](https://arthas.aliyun.com/doc/en/faq) * [Compile and debug/How to contribute](https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md) * [Release Notes](https://github.com/alibaba/arthas/releases) ### Feature Showcase #### Dashboard * https://arthas.aliyun.com/doc/en/dashboard ![dashboard](site/docs/.vuepress/public/images/dashboard.png) #### Thread * https://arthas.aliyun.com/doc/en/thread See what is eating your CPU (ranked by top CPU usage) and what is going on there in one glance: ```bash $ thread -n 3 "as-command-execute-daemon" Id=29 cpuUsage=75% RUNNABLE at sun.management.ThreadImpl.dumpThreads0(Native Method) at sun.management.ThreadImpl.getThreadInfo(ThreadImpl.java:440) at com.taobao.arthas.core.command.monitor200.ThreadCommand$1.action(ThreadCommand.java:58) at com.taobao.arthas.core.command.handler.AbstractCommandHandler.execute(AbstractCommandHandler.java:238) at com.taobao.arthas.core.command.handler.DefaultCommandHandler.handleCommand(DefaultCommandHandler.java:67) at com.taobao.arthas.core.server.ArthasServer$4.run(ArthasServer.java:276) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Number of locked synchronizers = 1 - java.util.concurrent.ThreadPoolExecutor$Worker@6cd0b6f8 "as-session-expire-daemon" Id=25 cpuUsage=24% TIMED_WAITING at java.lang.Thread.sleep(Native Method) at com.taobao.arthas.core.server.DefaultSessionManager$2.run(DefaultSessionManager.java:85) "Reference Handler" Id=2 cpuUsage=0% WAITING on java.lang.ref.Reference$Lock@69ba0f27 at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.Reference$Lock@69ba0f27 at java.lang.Object.wait(Object.java:503) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133) ``` #### jad * https://arthas.aliyun.com/doc/en/jad Decompile your class with one shot: ```java $ jad javax.servlet.Servlet ClassLoader: +-java.net.URLClassLoader@6108b2d7 +-sun.misc.Launcher$AppClassLoader@18b4aac2 +-sun.misc.Launcher$ExtClassLoader@1ddf84b8 Location: /Users/xxx/work/test/lib/servlet-api.jar /* * Decompiled with CFR 0_122. */ package javax.servlet; import java.io.IOException; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; public interface Servlet { public void init(ServletConfig var1) throws ServletException; public ServletConfig getServletConfig(); public void service(ServletRequest var1, ServletResponse var2) throws ServletException, IOException; public String getServletInfo(); public void destroy(); } ``` #### mc * https://arthas.aliyun.com/doc/en/mc Memory compiler, compiles `.java` files into `.class` files in memory. ```bash $ mc /tmp/Test.java ``` #### retransform * https://arthas.aliyun.com/doc/en/retransform Load the external `*.class` files to retransform/hotswap the loaded classes in JVM. ```bash retransform /tmp/Test.class retransform -c 327a647b /tmp/Test.class /tmp/Test\$Inner.class ``` #### sc * https://arthas.aliyun.com/doc/en/sc Search any loaded class with detailed information. ```bash $ sc -d org.springframework.web.context.support.XmlWebApplicationContext class-info org.springframework.web.context.support.XmlWebApplicationContext code-source /Users/xxx/work/test/WEB-INF/lib/spring-web-3.2.11.RELEASE.jar name org.springframework.web.context.support.XmlWebApplicationContext isInterface false isAnnotation false isEnum false isAnonymousClass false isArray false isLocalClass false isMemberClass false isPrimitive false isSynthetic false simple-name XmlWebApplicationContext modifier public annotation interfaces super-class +-org.springframework.web.context.support.AbstractRefreshableWebApplicationContext +-org.springframework.context.support.AbstractRefreshableConfigApplicationContext +-org.springframework.context.support.AbstractRefreshableApplicationContext +-org.springframework.context.support.AbstractApplicationContext +-org.springframework.core.io.DefaultResourceLoader +-java.lang.Object class-loader +-org.apache.catalina.loader.ParallelWebappClassLoader +-java.net.URLClassLoader@6108b2d7 +-sun.misc.Launcher$AppClassLoader@18b4aac2 +-sun.misc.Launcher$ExtClassLoader@1ddf84b8 classLoaderHash 25131501 ``` #### vmtool * https://arthas.aliyun.com/doc/en/vmtool Get objects in the heap that are instances of the specified class. ```bash $ vmtool --action getInstances --className java.lang.String --limit 10 @String[][ @String[com/taobao/arthas/core/shell/session/Session], @String[com.taobao.arthas.core.shell.session.Session], @String[com/taobao/arthas/core/shell/session/Session], @String[com/taobao/arthas/core/shell/session/Session], @String[com/taobao/arthas/core/shell/session/Session.class], @String[com/taobao/arthas/core/shell/session/Session.class], @String[com/taobao/arthas/core/shell/session/Session.class], @String[com/], @String[java/util/concurrent/ConcurrentHashMap$ValueIterator], @String[java/util/concurrent/locks/LockSupport], ] ``` #### stack * https://arthas.aliyun.com/doc/en/stack View the call stack of `test.arthas.TestStack#doGet`: ```bash $ stack test.arthas.TestStack doGet Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 286 ms. ts=2018-09-18 10:11:45;thread_name=http-bio-8080-exec-10;id=d9;is_daemon=true;priority=5;TCCL=org.apache.catalina.loader.ParallelWebappClassLoader@25131501 @test.arthas.TestStack.doGet() at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) ... at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:451) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1121) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) ``` #### Trace * https://arthas.aliyun.com/doc/en/trace See what is slowing down your method invocation with trace command: ![trace](site/docs/.vuepress/public/images/trace.png) #### Watch * https://arthas.aliyun.com/doc/en/watch Watch the first parameter and thrown exception of `test.arthas.TestWatch#doGet` only if it throws exception. ```bash $ watch test.arthas.TestWatch doGet {params[0], throwExp} -e Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 65 ms. ts=2018-09-18 10:26:28;result=@ArrayList[ @RequestFacade[org.apache.catalina.connector.RequestFacade@79f922b2], @NullPointerException[java.lang.NullPointerException], ] ``` #### Monitor * https://arthas.aliyun.com/doc/en/monitor Monitor a specific method invocation statistics, including the total number of invocations, average response time, success rate, and every 5 seconds: ```bash $ monitor -c 5 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 109 ms. timestamp class method total success fail avg-rt(ms) fail-rate ---------------------------------------------------------------------------------------------------------------------------- 2018-09-20 09:45:32 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello 5 5 0 0.67 0.00% timestamp class method total success fail avg-rt(ms) fail-rate ---------------------------------------------------------------------------------------------------------------------------- 2018-09-20 09:45:37 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello 5 5 0 1.00 0.00% timestamp class method total success fail avg-rt(ms) fail-rate ---------------------------------------------------------------------------------------------------------------------------- 2018-09-20 09:45:42 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello 5 5 0 0.43 0.00% ``` #### Time Tunnel(tt) * https://arthas.aliyun.com/doc/en/tt Record method invocation data, so that you can check the method invocation parameters, returned value, and thrown exceptions later. It works as if you could come back and replay the past method invocation via time tunnel. ```bash $ tt -t org.apache.dubbo.demo.provider.DemoServiceImpl sayHello Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 75 ms. INDEX TIMESTAMP COST(ms) IS-RET IS-EXP OBJECT CLASS METHOD ------------------------------------------------------------------------------------------------------------------------------------- 1000 2018-09-20 09:54:10 1.971195 true false 0x55965cca DemoServiceImpl sayHello 1001 2018-09-20 09:54:11 0.215685 true false 0x55965cca DemoServiceImpl sayHello 1002 2018-09-20 09:54:12 0.236303 true false 0x55965cca DemoServiceImpl sayHello 1003 2018-09-20 09:54:13 0.159598 true false 0x55965cca DemoServiceImpl sayHello 1004 2018-09-20 09:54:14 0.201982 true false 0x55965cca DemoServiceImpl sayHello 1005 2018-09-20 09:54:15 0.214205 true false 0x55965cca DemoServiceImpl sayHello 1006 2018-09-20 09:54:16 0.241863 true false 0x55965cca DemoServiceImpl sayHello 1007 2018-09-20 09:54:17 0.305747 true false 0x55965cca DemoServiceImpl sayHello 1008 2018-09-20 09:54:18 0.18468 true false 0x55965cca DemoServiceImpl sayHello ``` #### Classloader * https://arthas.aliyun.com/doc/en/classloader ```bash $ classloader name numberOfInstances loadedCountTotal BootstrapClassLoader 1 3346 com.taobao.arthas.agent.ArthasClassloader 1 1262 java.net.URLClassLoader 2 1033 org.apache.catalina.loader.ParallelWebappClassLoader 1 628 sun.reflect.DelegatingClassLoader 166 166 sun.misc.Launcher$AppClassLoader 1 31 com.alibaba.fastjson.util.ASMClassLoader 6 15 sun.misc.Launcher$ExtClassLoader 1 7 org.jvnet.hk2.internal.DelegatingClassLoader 2 2 sun.reflect.misc.MethodUtil 1 1 ``` #### Web Console * https://arthas.aliyun.com/doc/en/web-console ![web console](site/docs/.vuepress/public/images/web-console-local.png) #### Profiler/FlameGraph * https://arthas.aliyun.com/doc/en/profiler ```bash $ profiler start Started [cpu] profiling ``` ``` $ profiler stop profiler output file: /tmp/demo/arthas-output/20211207-111550.html OK ``` View profiler results under arthas-output via browser: ![](site/docs/.vuepress/public/images/arthas-output-svg.jpg) #### Arthas Spring Boot Starter * [Arthas Spring Boot Starter](https://arthas.aliyun.com/doc/spring-boot-starter.html) ### Known Users Arthas has more than 120 registered users, [View All](USERS.md). Welcome to register the company name in this issue: https://github.com/alibaba/arthas/issues/111 (in order of registration) ![Alibaba](static/alibaba.png) ![Alipay](static/alipay.png) ![Aliyun](static/aliyun.png) ![Taobao](static/taobao.png) ![ICBC](static/icbc.png) ![雪球财经](static/xueqiu.png) ![顺丰科技](static/sf.png) ![贝壳找房](static/ke.png) ![vipkid](static/vipkid.png) ![百度凤巢](static/baidufengchao.png) ![有赞](static/youzan.png) ![科大讯飞](static/iflytek.png) ![智联招聘](static/zhaopin.png) ![达美盛](static/dms.png) ### Derivative Projects * [Bistoury: A project that integrates Arthas](https://github.com/qunarcorp/bistoury) * [A fork of arthas using MVEL](https://github.com/XhinLiang/arthas) ### Credits #### Contributors This project exists, thanks to all the people who contributed. #### Projects * [bytekit](https://github.com/alibaba/bytekit) Java Bytecode Kit. * [greys-anatomy](https://github.com/oldmanpushcart/greys-anatomy): The Arthas code base has derived from Greys, we thank for the excellent work done by Greys. * [termd](https://github.com/alibaba/termd): Arthas's terminal implementation is based on termd, an open source library for writing terminal applications in Java. * [crash](https://github.com/crashub/crash): Arthas's text based user interface rendering is based on codes extracted from [here](https://github.com/crashub/crash/tree/1.3.2/shell) * [cli](https://github.com/alibaba/cli): Arthas's command line interface implementation is based on cli, open sourced by vert.x * [compiler](https://github.com/skalogs/SkaETL/tree/master/compiler) Arthas's memory compiler. * [Apache Commons Net](https://commons.apache.org/proper/commons-net/) Arthas's telnet client. * [async-profiler](https://github.com/jvm-profiling-tools/async-profiler) Arthas's profiler command. ================================================ FILE: README_CN.md ================================================ ## Arthas ![arthas](site/docs/.vuepress/public/images/arthas.png) [![Build Status](https://github.com/alibaba/arthas/workflows/JavaCI/badge.svg)](https://github.com/alibaba/arthas/actions) [![codecov](https://codecov.io/gh/alibaba/arthas/branch/master/graph/badge.svg)](https://codecov.io/gh/alibaba/arthas) [![maven](https://img.shields.io/maven-central/v/com.taobao.arthas/arthas-packaging.svg)](https://search.maven.org/search?q=g:com.taobao.arthas) ![license](https://img.shields.io/github/license/alibaba/arthas.svg) [![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/alibaba/arthas.svg)](http://isitmaintained.com/project/alibaba/arthas "Average time to resolve an issue") [![Percentage of issues still open](http://isitmaintained.com/badge/open/alibaba/arthas.svg)](http://isitmaintained.com/project/alibaba/arthas "Percentage of issues still open") English version goes [here](README.md). `Arthas` 是Alibaba开源的Java诊断工具，深受开发者喜爱。 当你遇到以下类似问题而束手无策时，`Arthas`可以帮助你解决： 0. 这个类从哪个 jar 包加载的？为什么会报各种类相关的 Exception？ 0. 我改的代码为什么没有执行到？难道是我没 commit？分支搞错了？ 0. 遇到问题无法在线上 debug，难道只能通过加日志再重新发布吗？ 0. 线上遇到某个用户的数据处理有问题，但线上同样无法 debug，线下无法重现！ 0. 是否有一个全局视角来查看系统的运行状况？ 0. 有什么办法可以监控到JVM的实时运行状态？ 0. 怎么快速定位应用的热点，生成火焰图？ 0. 怎样直接从JVM内查找某个类的实例？ `Arthas`支持JDK 6+（4.x 版本不再支持 JDK 6 和 JDK 7），支持Linux/Mac/Windows，采用命令行交互模式，同时提供丰富的 `Tab` 自动补全功能，进一步方便进行问题的定位和诊断。 ### 在线教程(推荐) * [查看](https://arthas.aliyun.com/doc/arthas-tutorials.html?language=cn) ### 快速开始 #### 使用`arthas-boot`(推荐) 下载`arthas-boot.jar`，然后用`java -jar`的方式启动： ```bash curl -O https://arthas.aliyun.com/arthas-boot.jar java -jar arthas-boot.jar ``` 打印帮助信息： ```bash java -jar arthas-boot.jar -h ``` * 如果下载速度比较慢，可以使用aliyun的镜像：`java -jar arthas-boot.jar --repo-mirror aliyun --use-http` #### 使用`as.sh` Arthas 支持在 Linux/Unix/Mac 等平台上一键安装，请复制以下内容，并粘贴到命令行中，敲 `回车` 执行即可： ```bash curl -L https://arthas.aliyun.com/install.sh | sh ``` 上述命令会下载启动脚本文件 `as.sh` 到当前目录，你可以放在任何地方或将其加入到 `$PATH` 中。 直接在shell下面执行`./as.sh`，就会进入交互界面。 也可以执行`./as.sh -h`来获取更多参数信息。 ### 文档 * [在线教程(推荐)](https://arthas.aliyun.com/doc/arthas-tutorials.html?language=cn) * [用户文档](https://arthas.aliyun.com/doc/) * [安装](https://arthas.aliyun.com/doc/install-detail.html) * [下载](https://arthas.aliyun.com/doc/download.html) * [快速入门](https://arthas.aliyun.com/doc/quick-start.html) * [进阶使用](https://arthas.aliyun.com/doc/advanced-use.html) * [命令列表](https://arthas.aliyun.com/doc/commands.html) * [WebConsole](https://arthas.aliyun.com/doc/web-console.html) * [Docker](https://arthas.aliyun.com/doc/docker.html) * [Arthas Spring Boot Starter](https://arthas.aliyun.com/doc/spring-boot-starter.html) * [用户案例](https://github.com/alibaba/arthas/issues?q=label%3Auser-case) * [FAQ/常见问题](https://arthas.aliyun.com/doc/faq) * [编译调试/参与贡献](https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md) * [Release Notes](https://github.com/alibaba/arthas/releases) * [QQ群/钉钉群](https://arthas.aliyun.com/doc/contact-us.html) ### 案例展示 #### Dashboard * https://arthas.aliyun.com/doc/dashboard ![dashboard](site/docs/.vuepress/public/images/dashboard.png) #### Thread * https://arthas.aliyun.com/doc/thread 一目了然的了解系统的状态，哪些线程比较占cpu？他们到底在做什么？ ``` $ thread -n 3 "as-command-execute-daemon" Id=29 cpuUsage=75% RUNNABLE at sun.management.ThreadImpl.dumpThreads0(Native Method) at sun.management.ThreadImpl.getThreadInfo(ThreadImpl.java:440) at com.taobao.arthas.core.command.monitor200.ThreadCommand$1.action(ThreadCommand.java:58) at com.taobao.arthas.core.command.handler.AbstractCommandHandler.execute(AbstractCommandHandler.java:238) at com.taobao.arthas.core.command.handler.DefaultCommandHandler.handleCommand(DefaultCommandHandler.java:67) at com.taobao.arthas.core.server.ArthasServer$4.run(ArthasServer.java:276) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Number of locked synchronizers = 1 - java.util.concurrent.ThreadPoolExecutor$Worker@6cd0b6f8 "as-session-expire-daemon" Id=25 cpuUsage=24% TIMED_WAITING at java.lang.Thread.sleep(Native Method) at com.taobao.arthas.core.server.DefaultSessionManager$2.run(DefaultSessionManager.java:85) "Reference Handler" Id=2 cpuUsage=0% WAITING on java.lang.ref.Reference$Lock@69ba0f27 at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.Reference$Lock@69ba0f27 at java.lang.Object.wait(Object.java:503) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133) ``` #### jad * https://arthas.aliyun.com/doc/jad 对类进行反编译: ```java $ jad javax.servlet.Servlet ClassLoader: +-java.net.URLClassLoader@6108b2d7 +-sun.misc.Launcher$AppClassLoader@18b4aac2 +-sun.misc.Launcher$ExtClassLoader@1ddf84b8 Location: /Users/xxx/work/test/lib/servlet-api.jar /* * Decompiled with CFR 0_122. */ package javax.servlet; import java.io.IOException; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; public interface Servlet { public void init(ServletConfig var1) throws ServletException; public ServletConfig getServletConfig(); public void service(ServletRequest var1, ServletResponse var2) throws ServletException, IOException; public String getServletInfo(); public void destroy(); } ``` #### mc * https://arthas.aliyun.com/doc/mc Memory Compiler/内存编译器，编译`.java`文件生成`.class`。 ```bash mc /tmp/Test.java ``` #### retransform * https://arthas.aliyun.com/doc/retransform 加载外部的`.class`文件，retransform 热更新jvm已加载的类。 ```bash retransform /tmp/Test.class retransform -c 327a647b /tmp/Test.class /tmp/Test\$Inner.class ``` #### sc * https://arthas.aliyun.com/doc/sc 查找JVM中已经加载的类 ```bash $ sc -d org.springframework.web.context.support.XmlWebApplicationContext class-info org.springframework.web.context.support.XmlWebApplicationContext code-source /Users/xxx/work/test/WEB-INF/lib/spring-web-3.2.11.RELEASE.jar name org.springframework.web.context.support.XmlWebApplicationContext isInterface false isAnnotation false isEnum false isAnonymousClass false isArray false isLocalClass false isMemberClass false isPrimitive false isSynthetic false simple-name XmlWebApplicationContext modifier public annotation interfaces super-class +-org.springframework.web.context.support.AbstractRefreshableWebApplicationContext +-org.springframework.context.support.AbstractRefreshableConfigApplicationContext +-org.springframework.context.support.AbstractRefreshableApplicationContext +-org.springframework.context.support.AbstractApplicationContext +-org.springframework.core.io.DefaultResourceLoader +-java.lang.Object class-loader +-org.apache.catalina.loader.ParallelWebappClassLoader +-java.net.URLClassLoader@6108b2d7 +-sun.misc.Launcher$AppClassLoader@18b4aac2 +-sun.misc.Launcher$ExtClassLoader@1ddf84b8 classLoaderHash 25131501 ``` #### vmtool * https://arthas.aliyun.com/doc/vmtool 从JVM heap中获取指定类的实例。 ```bash $ vmtool --action getInstances --className java.lang.String --limit 10 @String[][ @String[com/taobao/arthas/core/shell/session/Session], @String[com.taobao.arthas.core.shell.session.Session], @String[com/taobao/arthas/core/shell/session/Session], @String[com/taobao/arthas/core/shell/session/Session], @String[com/taobao/arthas/core/shell/session/Session.class], @String[com/taobao/arthas/core/shell/session/Session.class], @String[com/taobao/arthas/core/shell/session/Session.class], @String[com/], @String[java/util/concurrent/ConcurrentHashMap$ValueIterator], @String[java/util/concurrent/locks/LockSupport], ] ``` #### stack * https://arthas.aliyun.com/doc/stack 查看方法 `test.arthas.TestStack#doGet` 的调用堆栈： ```bash $ stack test.arthas.TestStack doGet Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 286 ms. ts=2018-09-18 10:11:45;thread_name=http-bio-8080-exec-10;id=d9;is_daemon=true;priority=5;TCCL=org.apache.catalina.loader.ParallelWebappClassLoader@25131501 @test.arthas.TestStack.doGet() at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) ... at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:451) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1121) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) ``` #### Trace * https://arthas.aliyun.com/doc/trace 观察方法执行的时候哪个子调用比较慢: ![trace](site/docs/.vuepress/public/images/trace.png) #### Watch * https://arthas.aliyun.com/doc/watch 观察方法 `test.arthas.TestWatch#doGet` 执行的入参，仅当方法抛出异常时才输出。 ```bash $ watch test.arthas.TestWatch doGet {params[0], throwExp} -e Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 65 ms. ts=2018-09-18 10:26:28;result=@ArrayList[ @RequestFacade[org.apache.catalina.connector.RequestFacade@79f922b2], @NullPointerException[java.lang.NullPointerException], ] ``` #### Monitor * https://arthas.aliyun.com/doc/monitor 监控某个特殊方法的调用统计数据，包括总调用次数，平均rt，成功率等信息，每隔5秒输出一次。 ```bash $ monitor -c 5 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 109 ms. timestamp class method total success fail avg-rt(ms) fail-rate ---------------------------------------------------------------------------------------------------------------------------- 2018-09-20 09:45:32 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello 5 5 0 0.67 0.00% timestamp class method total success fail avg-rt(ms) fail-rate ---------------------------------------------------------------------------------------------------------------------------- 2018-09-20 09:45:37 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello 5 5 0 1.00 0.00% timestamp class method total success fail avg-rt(ms) fail-rate ---------------------------------------------------------------------------------------------------------------------------- 2018-09-20 09:45:42 org.apache.dubbo.demo.provider.DemoServiceImpl sayHello 5 5 0 0.43 0.00% ``` #### Time Tunnel(tt) * https://arthas.aliyun.com/doc/tt 记录方法调用信息，支持事后查看方法调用的参数，返回值，抛出的异常等信息，仿佛穿越时空隧道回到调用现场一般。 ```bash $ tt -t org.apache.dubbo.demo.provider.DemoServiceImpl sayHello Press Ctrl+C to abort. Affect(class-cnt:1 , method-cnt:1) cost in 75 ms. INDEX TIMESTAMP COST(ms) IS-RET IS-EXP OBJECT CLASS METHOD ------------------------------------------------------------------------------------------------------------------------------------- 1000 2018-09-20 09:54:10 1.971195 true false 0x55965cca DemoServiceImpl sayHello 1001 2018-09-20 09:54:11 0.215685 true false 0x55965cca DemoServiceImpl sayHello 1002 2018-09-20 09:54:12 0.236303 true false 0x55965cca DemoServiceImpl sayHello 1003 2018-09-20 09:54:13 0.159598 true false 0x55965cca DemoServiceImpl sayHello 1004 2018-09-20 09:54:14 0.201982 true false 0x55965cca DemoServiceImpl sayHello 1005 2018-09-20 09:54:15 0.214205 true false 0x55965cca DemoServiceImpl sayHello 1006 2018-09-20 09:54:16 0.241863 true false 0x55965cca DemoServiceImpl sayHello 1007 2018-09-20 09:54:17 0.305747 true false 0x55965cca DemoServiceImpl sayHello 1008 2018-09-20 09:54:18 0.18468 true false 0x55965cca DemoServiceImpl sayHello ``` #### Classloader * https://arthas.aliyun.com/doc/classloader 了解当前系统中有多少类加载器，以及每个加载器加载的类数量，帮助您判断是否有类加载器泄露。 ```bash $ classloader name numberOfInstances loadedCountTotal BootstrapClassLoader 1 3346 com.taobao.arthas.agent.ArthasClassloader 1 1262 java.net.URLClassLoader 2 1033 org.apache.catalina.loader.ParallelWebappClassLoader 1 628 sun.reflect.DelegatingClassLoader 166 166 sun.misc.Launcher$AppClassLoader 1 31 com.alibaba.fastjson.util.ASMClassLoader 6 15 sun.misc.Launcher$ExtClassLoader 1 7 org.jvnet.hk2.internal.DelegatingClassLoader 2 2 sun.reflect.misc.MethodUtil 1 1 ``` #### Web Console * https://arthas.aliyun.com/doc/web-console ![web console](site/docs/.vuepress/public/images/web-console-local.png) #### Profiler/FlameGraph/火焰图 * https://arthas.aliyun.com/doc/profiler ```bash $ profiler start Started [cpu] profiling ``` ``` $ profiler stop profiler output file: /tmp/demo/arthas-output/20211207-111550.html OK ``` 通过浏览器查看profiler结果： ![](site/docs/.vuepress/public/images/arthas-output-svg.jpg) #### Arthas Spring Boot Starter * [Arthas Spring Boot Starter](https://arthas.aliyun.com/doc/spring-boot-starter.html) ### Known Users Arthas有超过120家登记用户，[查看全部](USERS.md)。 如果您在使用Arthas，请让我们知道，您的使用对我们非常重要：https://github.com/alibaba/arthas/issues/111 （按登记顺序排列） ![Alibaba](static/alibaba.png) ![Alipay](static/alipay.png) ![Aliyun](static/aliyun.png) ![Taobao](static/taobao.png) ![ICBC](static/icbc.png) ![雪球财经](static/xueqiu.png) ![顺丰科技](static/sf.png) ![贝壳找房](static/ke.png) ![vipkid](static/vipkid.png) ![百度凤巢](static/baidufengchao.png) ![有赞](static/youzan.png) ![科大讯飞](static/iflytek.png) ![智联招聘](static/zhaopin.png) ![高德红外](static/guideir.jpg) ![达美盛](static/dms.png) ### 衍生项目 * [Bistoury: 一个集成了Arthas的项目](https://github.com/qunarcorp/bistoury) * [一个使用MVEL脚本的fork](https://github.com/XhinLiang/arthas) ### Credit #### Contributors 感谢所有Contributors! #### Projects * [bytekit](https://github.com/alibaba/bytekit) Java Bytecode Kit，Arthas里字节码增强的内核。 * [greys-anatomy](https://github.com/oldmanpushcart/greys-anatomy): Arthas代码基于Greys二次开发而来，非常感谢Greys之前所有的工作，以及Greys原作者对Arthas提出的意见和建议！ * [termd](https://github.com/alibaba/termd): Arthas的命令行实现基于termd开发，是一款优秀的命令行程序开发框架，感谢termd提供了优秀的框架。 * [crash](https://github.com/crashub/crash): Arthas的文本渲染功能基于crash中的文本渲染功能开发，可以从[这里](https://github.com/crashub/crash/tree/1.3.2/shell)看到源码，感谢crash在这方面所做的优秀工作。 * [cli](https://github.com/alibaba/cli): Arthas的命令行界面基于vert.x提供的cli库进行开发，感谢vert.x在这方面做的优秀工作。 * [compiler](https://github.com/skalogs/SkaETL/tree/master/compiler) Arthas里的内存编译器代码来源 * [Apache Commons Net](https://commons.apache.org/proper/commons-net/) Arthas里的Telnet Client代码来源 * [async-profiler](https://github.com/jvm-profiling-tools/async-profiler) Arthas's profiler 命令. ### 仓库镜像 * [码云Arthas](https://gitee.com/arthas/arthas) ================================================ FILE: README_EN.md ================================================ English README has been moved [here](README.md). ================================================ FILE: TODO.md ================================================ * 代码还是很乱，需要继续重构 * 依赖需要清理，几个问题： * 所有 apache 的 common 库应当不需要 * json 库有好几份 * `jopt-simple` 看下能不能用 `cli` 取代 * `cli`, `termd` 的 artifactId, version 需要想下。是不是应该直接拿进来。他们的依赖也需要仔细看一下 * termd 依赖 netty，感觉有点重，而且第一次 attach 比较慢，不确定是 netty 的问题还是 attach 的问题 * 目前 web console 依赖 termd 中自带的 term.js 和 css，需要美化，需要想下如何集成到研发门户上 * 因为现在没有 Java 客户端了，所以 batch mode 也就没有了 * `com.taobao.arthas.core.shell.session.Session` 的能力需要和以前的 session 的实现对标。其中： * 真的需要 textmode 吗？我觉得这个应该是 option 的事情 * 真的需要 encoding 吗？我觉得仍然应该在 option 中定义，就算是真的需要，因为我觉得就应该是 UTF-8 * duration 是应当展示的，session 的列表也许也应当展示 * 需要仔细看下 session 过期是否符合预期 * 多人协作的时候 session 原来是在多人之间共享的吗？ * 所有的命令现在实现的是 AnnotatedCommand，需要继续增强的是: * Help 中的格式化输出被删除。需要为 `@Description` 定义一套统一的格式 * 命令的输入以及输出的日志 (record logger) 被删除，需要重新实现，因为现在是用 `CommandProcess` 来输出，所以，需要在 `CommandProcess` 的实现里打日志 * `com.taobao.arthas.core.GlobalOptions` 看上去好奇怪，感觉是 OptionCommand 应当做的事情 * `com.taobao.arthas.core.config.Configure` 需要清理，尤其是和 http 相关的 * 需要合并 develop 分支上后续的修复 * 代码中的 TODO/FIXME ================================================ FILE: USERS.md ================================================ ### Known Users Welcome to register the company name in this issue: https://github.com/alibaba/arthas/issues/111 (in order of registration) ![Alibaba](static/alibaba.png) ![Alipay](static/alipay.png) ![Aliyun](static/aliyun.png) ![Taobao](static/taobao.png) ![Tmall](static/tmall.png) ![微医](static/weiyi.png) ![卓越教育](static/zhuoyuejiaoyu.png) ![狐狸金服](static/hulijingfu.png) ![三体云](static/santiyun.png) ![证大文化](static/zhengdawenhua.png) ![连连支付](static/lianlianpay.png) ![Acmedcare+](static/acmedcare.png) ![好慷](static/homeking365_log.png) ![来电科技](static/laidian.png) ![四格互联](static/sigehulian.png) ![ICBC](static/icbc.png) ![陆鹰](static/luying.png) ![玩友时代](static/wangyoushidai.png) ![她社区](static/tashequ.png) ![龙腾出行](static/longtengchuxing.png) ![foscam](static/foscam.png) ![二维火](static/2dfire.png) ![lanxum](static/lanxum_com.png) 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![北京喜得国际网络科技有限公司](static/cider.png) ![智联招聘](static/zhaopin.png) ![深圳航天信息](static/ShenzhenAerospaceInformationCo.,Ltd.png) ![滴滴出行](static/didiglobal.jpg) ![兑观科技](static/videt.png) ![高德红外](static/guideir.jpg) ![明源云](static/mingyuanyun.jpg) * 网易云 * 派迩信息技术 * 朴新教育 * OK智慧教育 * 云集 * 业余草科技 * 家家顺 * 兰亮 * 浪潮集团 * 福建博思软件 * OPPO * 中科软科技 * 大搜车 * 泰豪软件 * 中房 * 安恒信息 * 武汉力龙 * 埃欧体科技 * 创维 * 启迪出行 * 大华股份 * 黄豆伟业 * 中国有赞 * 车巴达 * 华为 * 云管书 * 兑观 * 高德红外 * 明源云 ================================================ FILE: agent/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-agent arthas-agent https://github.com/alibaba/arthas com.taobao.arthas arthas-spy ${project.version} provided org.junit.vintage junit-vintage-engine test org.junit.jupiter junit-jupiter test arthas-agent org.apache.maven.plugins maven-assembly-plugin single package jar-with-dependencies com.taobao.arthas.agent334.AgentBootstrap com.taobao.arthas.agent334.AgentBootstrap true true ${project.name} ${project.version} ${project.name} ${project.version} ================================================ FILE: agent/src/main/java/com/taobao/arthas/agent/ArthasClassloader.java ================================================ package com.taobao.arthas.agent; import java.net.URL; import java.net.URLClassLoader; /** * @author beiwei30 on 09/12/2016. */ public class ArthasClassloader extends URLClassLoader { public ArthasClassloader(URL[] urls) { super(urls, ClassLoader.getSystemClassLoader().getParent()); } @Override protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException { final Class loadedClass = findLoadedClass(name); if (loadedClass != null) { return loadedClass; } // 优先从parent（SystemClassLoader）里加载系统类，避免抛出ClassNotFoundException if (name != null && (name.startsWith("sun.") || name.startsWith("java."))) { return super.loadClass(name, resolve); } try { Class aClass = findClass(name); if (resolve) { resolveClass(aClass); } return aClass; } catch (Exception e) { // ignore } return super.loadClass(name, resolve); } } ================================================ FILE: agent/src/main/java/com/taobao/arthas/agent334/AgentBootstrap.java ================================================ package com.taobao.arthas.agent334; import java.arthas.SpyAPI; import java.io.File; import java.io.FileOutputStream; import java.io.PrintStream; import java.io.UnsupportedEncodingException; import java.lang.instrument.Instrumentation; import java.net.URL; import java.net.URLDecoder; import java.security.CodeSource; import com.taobao.arthas.agent.ArthasClassloader; /** * 代理启动类 * * @author vlinux on 15/5/19. */ public class AgentBootstrap { private static final String ARTHAS_CORE_JAR = "arthas-core.jar"; private static final String ARTHAS_BOOTSTRAP = "com.taobao.arthas.core.server.ArthasBootstrap"; private static final String GET_INSTANCE = "getInstance"; private static final String IS_BIND = "isBind"; private static PrintStream ps = System.err; static { try { File arthasLogDir = new File(System.getProperty("user.home") + File.separator + "logs" + File.separator + "arthas" + File.separator); if (!arthasLogDir.exists()) { arthasLogDir.mkdirs(); } if (!arthasLogDir.exists()) { // #572 arthasLogDir = new File(System.getProperty("java.io.tmpdir") + File.separator + "logs" + File.separator + "arthas" + File.separator); if (!arthasLogDir.exists()) { arthasLogDir.mkdirs(); } } File log = new File(arthasLogDir, "arthas.log"); if (!log.exists()) { log.createNewFile(); } ps = new PrintStream(new FileOutputStream(log, true)); } catch (Throwable t) { t.printStackTrace(ps); } } /** * 
     * 1. 全局持有classloader用于隔离 Arthas 实现，防止多次attach重复初始化
     * 2. ClassLoader在arthas停止时会被reset
     * 3. 如果ClassLoader一直没变，则 com.taobao.arthas.core.server.ArthasBootstrap#getInstance 返回结果一直是一样的
     *
*/ private static volatile ClassLoader arthasClassLoader; public static void premain(String args, Instrumentation inst) { main(args, inst); } public static void agentmain(String args, Instrumentation inst) { main(args, inst); } /** * 让下次再次启动时有机会重新加载 */ public static void resetArthasClassLoader() { arthasClassLoader = null; } private static ClassLoader getClassLoader(Instrumentation inst, File arthasCoreJarFile) throws Throwable { // 构造自定义的类加载器，尽量减少Arthas对现有工程的侵蚀 return loadOrDefineClassLoader(arthasCoreJarFile); } private static ClassLoader loadOrDefineClassLoader(File arthasCoreJarFile) throws Throwable { if (arthasClassLoader == null) { arthasClassLoader = new ArthasClassloader(new URL[]{arthasCoreJarFile.toURI().toURL()}); } return arthasClassLoader; } private static synchronized void main(String args, final Instrumentation inst) { // 尝试判断arthas是否已在运行，如果是的话，直接就退出 try { Class.forName("java.arthas.SpyAPI"); // 加载不到会抛异常 if (SpyAPI.isInited()) { ps.println("Arthas server already stared, skip attach."); ps.flush(); return; } } catch (Throwable e) { // ignore } try { ps.println("Arthas server agent start..."); // 传递的args参数分两个部分:arthasCoreJar路径和agentArgs, 分别是Agent的JAR包路径和期望传递到服务端的参数 if (args == null) { args = ""; } args = decodeArg(args); String arthasCoreJar; final String agentArgs; int index = args.indexOf(';'); if (index != -1) { arthasCoreJar = args.substring(0, index); agentArgs = args.substring(index); } else { arthasCoreJar = ""; agentArgs = args; } File arthasCoreJarFile = new File(arthasCoreJar); if (!arthasCoreJarFile.exists()) { ps.println("Can not find arthas-core jar file from args: " + arthasCoreJarFile); // try to find from arthas-agent.jar directory CodeSource codeSource = AgentBootstrap.class.getProtectionDomain().getCodeSource(); if (codeSource != null) { try { File arthasAgentJarFile = new File(codeSource.getLocation().toURI().getSchemeSpecificPart()); arthasCoreJarFile = new File(arthasAgentJarFile.getParentFile(), ARTHAS_CORE_JAR); if (!arthasCoreJarFile.exists()) { ps.println("Can not find arthas-core jar file from agent jar directory: " + arthasAgentJarFile); } } catch (Throwable e) { ps.println("Can not find arthas-core jar file from " + codeSource.getLocation()); e.printStackTrace(ps); } } } if (!arthasCoreJarFile.exists()) { return; } /** * Use a dedicated thread to run the binding logic to prevent possible memory leak. #195 */ final ClassLoader agentLoader = getClassLoader(inst, arthasCoreJarFile); Thread bindingThread = new Thread() { @Override public void run() { try { bind(inst, agentLoader, agentArgs); } catch (Throwable throwable) { throwable.printStackTrace(ps); } } }; bindingThread.setName("arthas-binding-thread"); bindingThread.start(); bindingThread.join(); } catch (Throwable t) { t.printStackTrace(ps); try { if (ps != System.err) { ps.close(); } } catch (Throwable tt) { // ignore } throw new RuntimeException(t); } } private static void bind(Instrumentation inst, ClassLoader agentLoader, String args) throws Throwable { /** * 
         * ArthasBootstrap bootstrap = ArthasBootstrap.getInstance(inst);
         *
*/ Class bootstrapClass = agentLoader.loadClass(ARTHAS_BOOTSTRAP); Object bootstrap = bootstrapClass.getMethod(GET_INSTANCE, Instrumentation.class, String.class).invoke(null, inst, args); boolean isBind = (Boolean) bootstrapClass.getMethod(IS_BIND).invoke(bootstrap); if (!isBind) { String errorMsg = "Arthas server port binding failed! Please check $HOME/logs/arthas/arthas.log for more details."; ps.println(errorMsg); throw new RuntimeException(errorMsg); } ps.println("Arthas server already bind."); } private static String decodeArg(String arg) { try { return URLDecoder.decode(arg, "utf-8"); } catch (UnsupportedEncodingException e) { return arg; } } } ================================================ FILE: arthas-agent-attach/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-agent-attach arthas-agent-attach https://github.com/alibaba/arthas com.taobao.arthas arthas-spy ${project.version} provided true net.bytebuddy byte-buddy-agent org.zeroturnaround zt-zip org.junit.vintage junit-vintage-engine test org.junit.jupiter junit-jupiter test ================================================ FILE: arthas-agent-attach/src/main/java/com/taobao/arthas/agent/attach/ArthasAgent.java ================================================ package com.taobao.arthas.agent.attach; import java.arthas.SpyAPI; import java.io.File; import java.lang.instrument.Instrumentation; import java.net.URL; import java.util.HashMap; import java.util.Map; import org.zeroturnaround.zip.ZipUtil; import net.bytebuddy.agent.ByteBuddyAgent; /** * * @author hengyunabc 2020-06-22 * */ public class ArthasAgent { private static final int TEMP_DIR_ATTEMPTS = 10000; private static final String ARTHAS_CORE_JAR = "arthas-core.jar"; private static final String ARTHAS_BOOTSTRAP = "com.taobao.arthas.core.server.ArthasBootstrap"; private static final String GET_INSTANCE = "getInstance"; private static final String IS_BIND = "isBind"; private String errorMessage; private Map configMap = new HashMap(); private String arthasHome; private boolean slientInit; private Instrumentation instrumentation; public ArthasAgent() { this(null, null, false, null); } public ArthasAgent(Map configMap) { this(configMap, null, false, null); } public ArthasAgent(String arthasHome) { this(null, arthasHome, false, null); } public ArthasAgent(Map configMap, String arthasHome, boolean slientInit, Instrumentation instrumentation) { if (configMap != null) { this.configMap = configMap; } this.arthasHome = arthasHome; this.slientInit = slientInit; this.instrumentation = instrumentation; } public static void attach() { new ArthasAgent().init(); } /** * @see https://arthas.aliyun.com/doc/arthas-properties.html * @param configMap */ public static void attach(Map configMap) { new ArthasAgent(configMap).init(); } /** * use the specified arthas * @param arthasHome arthas directory */ public static void attach(String arthasHome) { new ArthasAgent(arthasHome).init(); } public void init() throws IllegalStateException { // 尝试判断arthas是否已在运行，如果是的话，直接就退出 try { Class.forName("java.arthas.SpyAPI"); // 加载不到会抛异常 if (SpyAPI.isInited()) { return; } } catch (Throwable e) { // ignore } try { if (instrumentation == null) { instrumentation = ByteBuddyAgent.install(); } // 检查 arthasHome if (arthasHome == null || arthasHome.trim().isEmpty()) { // 解压出 arthasHome URL coreJarUrl = this.getClass().getClassLoader().getResource("arthas-bin.zip"); if (coreJarUrl != null) { File tempArthasDir = createTempDir(); ZipUtil.unpack(coreJarUrl.openStream(), tempArthasDir); arthasHome = tempArthasDir.getAbsolutePath(); } else { throw new IllegalArgumentException("can not getResources arthas-bin.zip from classloader: " + this.getClass().getClassLoader()); } } // find arthas-core.jar File arthasCoreJarFile = new File(arthasHome, ARTHAS_CORE_JAR); if (!arthasCoreJarFile.exists()) { throw new IllegalStateException("can not find arthas-core.jar under arthasHome: " + arthasHome); } AttachArthasClassloader arthasClassLoader = new AttachArthasClassloader( new URL[] { arthasCoreJarFile.toURI().toURL() }); /** * 
             * ArthasBootstrap bootstrap = ArthasBootstrap.getInstance(inst);
             *
*/ Class bootstrapClass = arthasClassLoader.loadClass(ARTHAS_BOOTSTRAP); Object bootstrap = bootstrapClass.getMethod(GET_INSTANCE, Instrumentation.class, Map.class).invoke(null, instrumentation, configMap); boolean isBind = (Boolean) bootstrapClass.getMethod(IS_BIND).invoke(bootstrap); if (!isBind) { String errorMsg = "Arthas server port binding failed! Please check $HOME/logs/arthas/arthas.log for more details."; throw new RuntimeException(errorMsg); } } catch (Throwable e) { errorMessage = e.getMessage(); if (!slientInit) { throw new IllegalStateException(e); } } } private static File createTempDir() { File baseDir = new File(System.getProperty("java.io.tmpdir")); String baseName = "arthas-" + System.currentTimeMillis() + "-"; for (int counter = 0; counter < TEMP_DIR_ATTEMPTS; counter++) { File tempDir = new File(baseDir, baseName + counter); if (tempDir.mkdir()) { return tempDir; } } throw new IllegalStateException("Failed to create directory within " + TEMP_DIR_ATTEMPTS + " attempts (tried " + baseName + "0 to " + baseName + (TEMP_DIR_ATTEMPTS - 1) + ')'); } public String getErrorMessage() { return errorMessage; } public void setErrorMessage(String errorMessage) { this.errorMessage = errorMessage; } } ================================================ FILE: arthas-agent-attach/src/main/java/com/taobao/arthas/agent/attach/AttachArthasClassloader.java ================================================ package com.taobao.arthas.agent.attach; import java.net.URL; import java.net.URLClassLoader; /** * * @author hengyunabc 2020-06-22 * */ public class AttachArthasClassloader extends URLClassLoader { public AttachArthasClassloader(URL[] urls) { super(urls, ClassLoader.getSystemClassLoader().getParent()); } @Override protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException { final Class loadedClass = findLoadedClass(name); if (loadedClass != null) { return loadedClass; } // 优先从parent（SystemClassLoader）里加载系统类，避免抛出ClassNotFoundException if (name != null && (name.startsWith("sun.") || name.startsWith("java."))) { return super.loadClass(name, resolve); } try { Class aClass = findClass(name); if (resolve) { resolveClass(aClass); } return aClass; } catch (Exception e) { // ignore } return super.loadClass(name, resolve); } } ================================================ FILE: arthas-mcp-integration-test/README.md ================================================ # arthas-mcp-integration-test 本模块提供 Arthas MCP Server 的集成测试： - 测试会启动一个独立的目标 JVM（`TargetJvmApp`）。 - 通过 `packaging/target/arthas-bin/as.sh` 动态 attach 到目标 JVM，在目标 JVM 内启动 Arthas Server（仅开启 HTTP 端口，telnet 端口设置为 0）。 - 使用最小 MCP（Streamable HTTP + SSE）客户端调用 `tools/list` 与 `tools/call`，验证 MCP tools 功能可用。 ## 运行方式 在项目根目录执行： ```bash ./mvnw -pl arthas-mcp-integration-test -am verify ``` 说明： - `-am` 会确保 `packaging` 等依赖模块先构建，从而在 `packaging/target/arthas-bin` 生成可用的 `as.sh` 与相关 jar。 - 该集成测试依赖本机 `bash`，Windows 环境会自动跳过。 ================================================ FILE: arthas-mcp-integration-test/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-mcp-integration-test arthas-mcp-integration-test https://github.com/alibaba/arthas com.taobao.arthas arthas-packaging ${project.version} test com.taobao.arthas arthas-mcp-server ${project.version} test org.junit.jupiter junit-jupiter test org.assertj assertj-core test io.modelcontextprotocol.sdk mcp org.apache.maven.plugins maven-surefire-plugin 3.2.5 it-verify verify test **/*IT.java ================================================ FILE: arthas-mcp-integration-test/src/test/java/com/taobao/arthas/mcp/it/ArthasMcpJavaSdkIT.java ================================================ package com.taobao.arthas.mcp.it; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.util.JsonParser; import io.modelcontextprotocol.client.McpClient; import io.modelcontextprotocol.client.McpSyncClient; import io.modelcontextprotocol.client.transport.HttpClientStreamableHttpTransport; import io.modelcontextprotocol.spec.McpClientTransport; import io.modelcontextprotocol.spec.McpSchema; import org.assertj.core.api.Assertions; import org.junit.jupiter.api.AfterAll; import org.junit.jupiter.api.Assumptions; import org.junit.jupiter.api.BeforeAll; import org.junit.jupiter.api.Test; import org.junit.jupiter.api.TestInstance; import org.junit.jupiter.api.Timeout; import org.junit.jupiter.api.parallel.Execution; import org.junit.jupiter.api.parallel.ExecutionMode; import org.junit.jupiter.params.ParameterizedTest; import org.junit.jupiter.params.provider.MethodSource; import java.io.File; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.net.InetSocketAddress; import java.net.Socket; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.time.Duration; import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Locale; import java.util.Map; import java.util.Set; import java.util.concurrent.TimeUnit; import java.util.stream.Stream; import static org.assertj.core.api.Assertions.assertThat; @TestInstance(TestInstance.Lifecycle.PER_CLASS) @Execution(ExecutionMode.SAME_THREAD) class ArthasMcpJavaSdkIT { private static final ObjectMapper OBJECT_MAPPER = JsonParser.getObjectMapper(); private static final String TARGET_CLASS_PATTERN = TargetJvmApp.class.getName(); private static final String TARGET_METHOD_PATTERN = "hotMethod"; private static final List EXPECTED_TOOL_NAMES = Arrays.asList( "classloader", "dashboard", "dump", "getstatic", "heapdump", "jad", "jvm", "mc", "mbean", "memory", "monitor", "ognl", "options", "perfcounter", "profiler", "redefine", "retransform", "sc", "sm", "stack", "stop", "sysenv", "sysprop", "thread", "trace", "tt", "vmoption", "vmtool", "viewfile", "watch" ); private Environment env; @BeforeAll void setUp() throws Exception { Assumptions.assumeFalse(isWindows(), "集成测试依赖 bash/as.sh，Windows 环境跳过"); this.env = Environment.start("arthas-mcp-java-sdk-it", "arthas-mcp-java-sdk-it-home"); } @AfterAll void tearDown() { if (this.env != null) { this.env.close(); this.env = null; } } @Test @Timeout(value = 3, unit = TimeUnit.MINUTES) void should_list_all_mcp_tools_via_java_mcp_sdk() { Set expected = new HashSet(EXPECTED_TOOL_NAMES); Set actual = new HashSet(this.env.toolNames); Set missing = new HashSet(expected); missing.removeAll(actual); Set extra = new HashSet(actual); extra.removeAll(expected); assertThat(missing).as("tools/list 缺少工具: %s", missing).isEmpty(); assertThat(extra).as("tools/list 存在未覆盖的工具: %s", extra).isEmpty(); } static Stream toolNamesExceptStop() { List toolNames = new ArrayList(EXPECTED_TOOL_NAMES); toolNames.remove("stop"); return toolNames.stream(); } @ParameterizedTest(name = "{0}") @MethodSource("toolNamesExceptStop") @Timeout(value = 3, unit = TimeUnit.MINUTES) void should_call_each_mcp_tool_via_java_mcp_sdk(String toolName) throws Exception { Map args = createArgumentsForTool(toolName, this.env); McpSchema.CallToolResult result = this.env.client.callTool(new McpSchema.CallToolRequest(toolName, args)); String body = assertCallToolSuccess(toolName, result); assertToolSideEffects(toolName, this.env, body); } @Test @Timeout(value = 3, unit = TimeUnit.MINUTES) void should_call_stop_tool_via_java_mcp_sdk() throws Exception { Assumptions.assumeFalse(isWindows(), "集成测试依赖 bash/as.sh，Windows 环境跳过"); Environment stopEnv = null; try { stopEnv = Environment.start("arthas-mcp-java-sdk-stop-it", "arthas-mcp-java-sdk-stop-it-home"); Map args = new HashMap(); args.put("delayMs", 200); McpSchema.CallToolResult result = stopEnv.client.callTool(new McpSchema.CallToolRequest("stop", args)); assertCallToolSuccess("stop", result); waitForPortClosed("127.0.0.1", stopEnv.httpPort, Duration.ofSeconds(15)); } finally { if (stopEnv != null) { stopEnv.close(); } } } private static void assertToolSideEffects(String toolName, Environment env, String body) throws Exception { if ("heapdump".equals(toolName)) { Path heapdumpFile = env.tempHome.resolve("heapdump.hprof"); assertThat(heapdumpFile).exists(); assertThat(Files.size(heapdumpFile)).isGreaterThan(0L); try { Files.deleteIfExists(heapdumpFile); } catch (Exception ignored) { } return; } if ("dump".equals(toolName)) { Path dumpOutputDir = env.tempHome.resolve("dump-output"); assertThat(dumpOutputDir).isDirectory(); assertThat(countFilesWithSuffix(dumpOutputDir, ".class")).isGreaterThan(0); return; } if ("mc".equals(toolName)) { Path mcOutputDir = env.tempHome.resolve("mc-output"); assertThat(mcOutputDir).isDirectory(); assertThat(countFilesWithSuffix(mcOutputDir, ".class")).isGreaterThan(0); return; } if (isStreamableTool(toolName)) { JsonNode node = OBJECT_MAPPER.readTree(body); if (node != null && node.isObject()) { JsonNode resultCount = node.get("resultCount"); if (resultCount != null && resultCount.canConvertToInt()) { int count = resultCount.asInt(); assertThat(count).as("tool=%s resultCount, body=%s", toolName, body).isGreaterThan(0); } else { Assertions.fail("streamable tool 未返回 resultCount: tool=" + toolName + ", body=" + body); } } } } private static boolean isStreamableTool(String toolName) { return "dashboard".equals(toolName) || "monitor".equals(toolName) || "watch".equals(toolName) || "trace".equals(toolName) || "stack".equals(toolName) || "tt".equals(toolName); } private static int countFilesWithSuffix(Path dir, String suffix) throws IOException { if (dir == null || !Files.isDirectory(dir)) { return 0; } try (Stream stream = Files.walk(dir)) { return (int) stream .filter(p -> Files.isRegularFile(p) && p.getFileName() != null && p.getFileName().toString().endsWith(suffix)) .count(); } } private static Map createArgumentsForTool(String toolName, Environment env) throws IOException { Map args = new HashMap(); if ("jvm".equals(toolName) || "thread".equals(toolName) || "memory".equals(toolName) || "options".equals(toolName) || "vmoption".equals(toolName) || "classloader".equals(toolName) || "perfcounter".equals(toolName)) { return args; } if ("jad".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); return args; } if ("sc".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); return args; } if ("sm".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); args.put("methodPattern", TARGET_METHOD_PATTERN); return args; } if ("dump".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); Path outDir = env.tempHome.resolve("dump-output"); Files.createDirectories(outDir); args.put("outputDir", outDir.toString()); args.put("limit", 1); return args; } if ("mc".equals(toolName)) { Path sourceFile = env.ensureMcSourceFile(); Path outDir = env.tempHome.resolve("mc-output"); Files.createDirectories(outDir); args.put("javaFilePaths", sourceFile.toString()); args.put("outputDir", outDir.toString()); return args; } if ("retransform".equals(toolName) || "redefine".equals(toolName)) { args.put("classFilePaths", env.targetClassFile.toString()); return args; } if ("getstatic".equals(toolName)) { args.put("className", "java.lang.Integer"); args.put("fieldName", "MAX_VALUE"); return args; } if ("ognl".equals(toolName)) { args.put("expression", "@java.lang.System@getProperty(\"java.version\")"); args.put("expandLevel", 1); return args; } if ("mbean".equals(toolName)) { args.put("namePattern", "java.lang:type=Runtime"); args.put("attributePattern", "Uptime"); return args; } if ("sysenv".equals(toolName)) { args.put("envName", "PATH"); return args; } if ("sysprop".equals(toolName)) { args.put("propertyName", "java.version"); return args; } if ("vmtool".equals(toolName)) { args.put("action", "getInstances"); args.put("className", TARGET_CLASS_PATTERN); args.put("limit", 1); args.put("expandLevel", 1); args.put("express", "instances.length"); return args; } if ("heapdump".equals(toolName)) { Path heapdumpFile = env.tempHome.resolve("heapdump.hprof"); args.put("filePath", heapdumpFile.toString()); return args; } if ("profiler".equals(toolName)) { args.put("action", "actions"); return args; } if ("viewfile".equals(toolName)) { Path outputDir = env.tempHome.resolve("arthas-output"); Files.createDirectories(outputDir); Path viewFile = outputDir.resolve("viewfile-test.txt"); Files.write(viewFile, "hello viewfile\n".getBytes(StandardCharsets.UTF_8)); args.put("path", "viewfile-test.txt"); args.put("offset", 0L); args.put("maxBytes", 1024); return args; } if ("dashboard".equals(toolName)) { args.put("intervalMs", 200); args.put("numberOfExecutions", 1); return args; } if ("watch".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); args.put("methodPattern", TARGET_METHOD_PATTERN); args.put("numberOfExecutions", 1); args.put("timeout", 10); return args; } if ("trace".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); args.put("methodPattern", TARGET_METHOD_PATTERN); args.put("numberOfExecutions", 1); args.put("timeout", 10); return args; } if ("monitor".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); args.put("methodPattern", TARGET_METHOD_PATTERN); args.put("intervalMs", 1000); args.put("numberOfExecutions", 1); args.put("timeout", 15); return args; } if ("stack".equals(toolName)) { args.put("classPattern", TARGET_CLASS_PATTERN); args.put("methodPattern", TARGET_METHOD_PATTERN); args.put("numberOfExecutions", 1); // CI 环境下 stack 增强+触发可能更慢，适当放大超时时间以减少偶发失败 args.put("timeout", 30); return args; } if ("tt".equals(toolName)) { args.put("action", "record"); args.put("classPattern", TARGET_CLASS_PATTERN); args.put("methodPattern", TARGET_METHOD_PATTERN); args.put("numberOfExecutions", 1); args.put("timeout", 10); return args; } throw new IllegalArgumentException("未为 tool 配置参数: " + toolName); } private static String assertCallToolSuccess(String toolName, McpSchema.CallToolResult result) throws Exception { assertThat(result).as("tool=%s", toolName).isNotNull(); assertThat(result.isError()).as("tool=%s, content=%s", toolName, result.content()).isNotEqualTo(Boolean.TRUE); assertThat(result.content()).as("tool=%s", toolName).isNotNull().isNotEmpty(); String text = extractTextContent(result); assertThat(text).as("tool=%s", toolName).isNotBlank(); JsonNode node = OBJECT_MAPPER.readTree(text); if (node != null && node.isObject()) { JsonNode error = node.get("error"); if (error != null && error.isBoolean() && error.booleanValue()) { Assertions.fail("tool 执行返回 error=true: tool=" + toolName + ", body=" + text); } JsonNode status = node.get("status"); if (status != null && status.isTextual() && "error".equalsIgnoreCase(status.asText())) { Assertions.fail("tool 执行返回 status=error: tool=" + toolName + ", body=" + text); } } return text; } private static String extractTextContent(McpSchema.CallToolResult result) { StringBuilder sb = new StringBuilder(); for (McpSchema.Content content : result.content()) { if (content instanceof McpSchema.TextContent) { String text = ((McpSchema.TextContent) content).text(); if (text != null) { if (sb.length() > 0) { sb.append('\n'); } sb.append(text); } } } return sb.toString(); } private static final class Environment implements AutoCloseable { private final Path arthasHome; private final Path tempHome; private final int httpPort; private final Process targetJvm; private final McpSyncClient client; private final Set toolNames; private final Path targetClassFile; private Path mcSourceFile; private Environment(Path arthasHome, Path tempHome, int httpPort, Process targetJvm, McpSyncClient client, Set toolNames, Path targetClassFile) { this.arthasHome = arthasHome; this.tempHome = tempHome; this.httpPort = httpPort; this.targetJvm = targetJvm; this.client = client; this.toolNames = toolNames; this.targetClassFile = targetClassFile; } static Environment start(String clientName, String tempDirPrefix) throws Exception { Path arthasHome = resolveArthasBinDir(); assertThat(arthasHome).isDirectory(); assertThat(arthasHome.resolve("as.sh")).exists(); assertThat(arthasHome.resolve("arthas-core.jar")).exists(); assertThat(arthasHome.resolve("arthas-agent.jar")).exists(); int telnetPort = 0; int httpPort = findFreePort(); Path tempHome = Files.createTempDirectory(tempDirPrefix); Process targetJvm = null; McpSyncClient client = null; try { Path targetLog = tempHome.resolve("target-jvm.log"); targetJvm = startTargetJvm(tempHome, targetLog); long targetPid = ProcessPid.pidOf(targetJvm); Path attachLog = tempHome.resolve("attach.log"); runAttach(arthasHome, tempHome, attachLog, targetPid, telnetPort, httpPort); waitForPortOpen("127.0.0.1", httpPort, Duration.ofSeconds(30)); McpClientTransport transport = HttpClientStreamableHttpTransport.builder("http://127.0.0.1:" + httpPort).build(); client = McpClient.sync(transport) .clientInfo(new McpSchema.Implementation(clientName, "1.0.0")) .requestTimeout(Duration.ofSeconds(120)) .initializationTimeout(Duration.ofSeconds(10)) .build(); McpSchema.InitializeResult initResult = client.initialize(); assertThat(initResult).isNotNull(); McpSchema.ListToolsResult toolsResult = client.listTools(); assertThat(toolsResult).isNotNull(); assertThat(toolsResult.tools()).isNotNull(); Set toolNames = new HashSet(); for (McpSchema.Tool tool : toolsResult.tools()) { toolNames.add(tool.name()); } Path targetClassFile = resolveTargetJvmAppClassFile(); assertThat(targetClassFile).exists(); return new Environment(arthasHome, tempHome, httpPort, targetJvm, client, toolNames, targetClassFile); } catch (Exception e) { if (client != null) { try { client.closeGracefully(); } catch (Exception ignored) { } } if (targetJvm != null) { targetJvm.destroy(); if (!targetJvm.waitFor(5, TimeUnit.SECONDS)) { targetJvm.destroyForcibly(); } } deleteDirectoryQuietly(tempHome); throw e; } } Path ensureMcSourceFile() throws IOException { if (this.mcSourceFile != null) { return this.mcSourceFile; } Path source = this.tempHome.resolve("McpMcTestClass.java"); String code = "" + "public class McpMcTestClass {\n" + " public static int add(int a, int b) {\n" + " return a + b;\n" + " }\n" + "}\n"; Files.write(source, code.getBytes(StandardCharsets.UTF_8)); this.mcSourceFile = source; return source; } @Override public void close() { if (this.client != null) { try { this.client.closeGracefully(); } catch (Exception ignored) { } } if (this.targetJvm != null) { this.targetJvm.destroy(); try { if (!this.targetJvm.waitFor(5, TimeUnit.SECONDS)) { this.targetJvm.destroyForcibly(); } } catch (Exception ignored) { } } deleteDirectoryQuietly(this.tempHome); } } private static void runAttach(Path arthasHome, Path tempHome, Path attachLog, long targetPid, int telnetPort, int httpPort) throws Exception { ProcessBuilder pb = new ProcessBuilder( "bash", arthasHome.resolve("as.sh").toString(), "--attach-only", "--arthas-home", arthasHome.toString(), "--target-ip", "127.0.0.1", "--telnet-port", String.valueOf(telnetPort), "--http-port", String.valueOf(httpPort), String.valueOf(targetPid) ); pb.redirectErrorStream(true); pb.redirectOutput(attachLog.toFile()); pb.environment().put("JAVA_HOME", System.getProperty("java.home")); pb.environment().put("HOME", tempHome.toAbsolutePath().toString()); Process attach = pb.start(); if (!attach.waitFor(90, TimeUnit.SECONDS)) { attach.destroyForcibly(); Assertions.fail("as.sh attach 超时: " + attachLog); } if (attach.exitValue() != 0) { Assertions.fail("as.sh attach 失败(exit=" + attach.exitValue() + "): " + attachLog); } } private static Process startTargetJvm(Path workDir, Path targetLog) throws IOException { String javaBin = Paths.get(System.getProperty("java.home"), "bin", "java").toString(); String classpath = Paths.get(System.getProperty("basedir"), "target", "test-classes").toString(); ProcessBuilder pb = new ProcessBuilder(javaBin, "-cp", classpath, TargetJvmApp.class.getName()); if (workDir != null) { pb.directory(workDir.toFile()); } pb.redirectErrorStream(true); pb.redirectOutput(targetLog.toFile()); return pb.start(); } private static Path resolveArthasBinDir() { String basedir = System.getProperty("basedir"); assertThat(basedir).as("Maven surefire/failsafe should set system property 'basedir'").isNotBlank(); return Paths.get(basedir).resolve("../packaging/target/arthas-bin").normalize(); } private static Path resolveTargetJvmAppClassFile() { String basedir = System.getProperty("basedir"); assertThat(basedir).as("Maven surefire/failsafe should set system property 'basedir'").isNotBlank(); return Paths.get(basedir, "target", "test-classes", "com", "taobao", "arthas", "mcp", "it", "TargetJvmApp.class").normalize(); } private static int findFreePort() throws IOException { try (java.net.ServerSocket socket = new java.net.ServerSocket(0)) { socket.setReuseAddress(true); return socket.getLocalPort(); } } private static void waitForPortOpen(String host, int port, Duration timeout) throws InterruptedException { long deadline = System.nanoTime() + timeout.toNanos(); while (System.nanoTime() < deadline) { try (Socket socket = new Socket()) { socket.connect(new InetSocketAddress(host, port), 500); return; } catch (IOException ignored) { Thread.sleep(200); } } throw new IllegalStateException("等待端口监听超时: " + host + ":" + port); } private static void waitForPortClosed(String host, int port, Duration timeout) throws InterruptedException { long deadline = System.nanoTime() + timeout.toNanos(); while (System.nanoTime() < deadline) { try (Socket socket = new Socket()) { socket.connect(new InetSocketAddress(host, port), 500); Thread.sleep(200); } catch (IOException ignored) { return; } } throw new IllegalStateException("等待端口关闭超时: " + host + ":" + port); } private static boolean isWindows() { String os = System.getProperty("os.name"); return os != null && os.toLowerCase(Locale.ROOT).contains("win"); } private static void deleteDirectoryQuietly(Path dir) { try { if (!Files.exists(dir)) { return; } Files.walk(dir) .sorted(Comparator.reverseOrder()) .map(Path::toFile) .forEach(File::delete); } catch (Exception ignored) { } } private static final class ProcessPid { private ProcessPid() { } static long pidOf(Process process) { // Java 9+ 获取 pid try { return (Long) Process.class.getMethod("pid").invoke(process); } catch (Exception ignored) { // Java 8 兼容处理 } try { java.lang.reflect.Field pidField = process.getClass().getDeclaredField("pid"); pidField.setAccessible(true); Object value = pidField.get(process); if (value instanceof Number) { return ((Number) value).longValue(); } throw new IllegalStateException("Unsupported pid field type: " + value); } catch (Exception e) { throw new IllegalStateException("无法获取目标 JVM pid", e); } } } } ================================================ FILE: arthas-mcp-integration-test/src/test/java/com/taobao/arthas/mcp/it/ArthasMcpToolsIT.java ================================================ package com.taobao.arthas.mcp.it; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.protocol.spec.HttpHeaders; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.util.JsonParser; import org.assertj.core.api.Assertions; import org.junit.jupiter.api.Assumptions; import org.junit.jupiter.api.Test; import org.junit.jupiter.api.Timeout; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.InetSocketAddress; import java.net.Socket; import java.net.URL; import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.time.Duration; import java.util.*; import java.util.concurrent.TimeUnit; import static org.assertj.core.api.Assertions.assertThat; class ArthasMcpToolsIT { private static final ObjectMapper OBJECT_MAPPER = JsonParser.getObjectMapper(); @Test @Timeout(value = 3, unit = TimeUnit.MINUTES) void should_list_tools_and_call_tool_via_mcp() throws Exception { Assumptions.assumeFalse(isWindows(), "集成测试依赖 bash/as.sh，Windows 环境跳过"); Path arthasHome = resolveArthasBinDir(); assertThat(arthasHome).isDirectory(); assertThat(arthasHome.resolve("as.sh")).exists(); assertThat(arthasHome.resolve("arthas-core.jar")).exists(); assertThat(arthasHome.resolve("arthas-agent.jar")).exists(); int telnetPort = 0; int httpPort = findFreePort(); Process targetJvm = null; Path tempHome = null; try { tempHome = Files.createTempDirectory("arthas-mcp-it-home"); Path targetLog = tempHome.resolve("target-jvm.log"); targetJvm = startTargetJvm(targetLog); long targetPid = ProcessPid.pidOf(targetJvm); Path attachLog = tempHome.resolve("attach.log"); runAttach(arthasHome, tempHome, attachLog, targetPid, telnetPort, httpPort); waitForPortOpen("127.0.0.1", httpPort, Duration.ofSeconds(30)); StreamableMcpHttpClient client = new StreamableMcpHttpClient("127.0.0.1", httpPort, "/mcp"); String sessionId = retry(Duration.ofSeconds(30), client::initialize); client.sendInitializedNotification(sessionId); McpSchema.ListToolsResult toolsResult = client.listTools(sessionId); assertThat(toolsResult.getTools()).isNotNull(); assertThat(toolsResult.getTools().size()).isGreaterThanOrEqualTo(10); Set toolNames = new HashSet<>(); for (McpSchema.Tool tool : toolsResult.getTools()) { toolNames.add(tool.getName()); } assertThat(toolNames).contains("jvm", "jad", "thread"); assertThat(toolNames).contains("watch", "tt"); McpSchema.Tool watchTool = toolsResult.getTools().stream() .filter(t -> "watch".equals(t.getName())) .findFirst() .orElse(null); assertThat(watchTool).as("watch tool should exist in listTools").isNotNull(); assertThat(watchTool.getInputSchema()).isNotNull(); assertThat(watchTool.getInputSchema().getProperties()).containsKey("sizeLimit"); if (watchTool.getInputSchema().getRequired() != null) { assertThat(watchTool.getInputSchema().getRequired()).doesNotContain("sizeLimit"); } McpSchema.Tool ttTool = toolsResult.getTools().stream() .filter(t -> "tt".equals(t.getName())) .findFirst() .orElse(null); assertThat(ttTool).as("tt tool should exist in listTools").isNotNull(); assertThat(ttTool.getInputSchema()).isNotNull(); assertThat(ttTool.getInputSchema().getProperties()).containsKey("sizeLimit"); if (ttTool.getInputSchema().getRequired() != null) { assertThat(ttTool.getInputSchema().getRequired()).doesNotContain("sizeLimit"); } McpSchema.CallToolResult callToolResult = client.callTool(sessionId, "jvm", Collections.emptyMap()); assertThat(callToolResult).isNotNull(); assertThat(callToolResult.getIsError()).isNotEqualTo(Boolean.TRUE); assertThat(callToolResult.getContent()).isNotNull().isNotEmpty(); } finally { if (targetJvm != null) { targetJvm.destroy(); if (!targetJvm.waitFor(5, TimeUnit.SECONDS)) { targetJvm.destroyForcibly(); } } if (tempHome != null) { deleteDirectoryQuietly(tempHome); } } } private static String retry(Duration timeout, IoSupplier supplier) throws Exception { long deadline = System.nanoTime() + timeout.toNanos(); Exception last = null; while (System.nanoTime() < deadline) { try { return supplier.get(); } catch (Exception e) { last = e; Thread.sleep(200); } } if (last != null) { throw last; } throw new IllegalStateException("重试超时"); } @FunctionalInterface private interface IoSupplier { T get() throws Exception; } private static void runAttach(Path arthasHome, Path tempHome, Path attachLog, long targetPid, int telnetPort, int httpPort) throws Exception { List command = new ArrayList<>(); command.add("bash"); command.add(arthasHome.resolve("as.sh").toString()); command.add("--attach-only"); command.add("--arthas-home"); command.add(arthasHome.toString()); command.add("--target-ip"); command.add("127.0.0.1"); command.add("--telnet-port"); command.add(String.valueOf(telnetPort)); command.add("--http-port"); command.add(String.valueOf(httpPort)); command.add(String.valueOf(targetPid)); ProcessBuilder pb = new ProcessBuilder(command); pb.redirectErrorStream(true); pb.redirectOutput(attachLog.toFile()); Map env = pb.environment(); env.put("JAVA_HOME", System.getProperty("java.home")); env.put("HOME", tempHome.toAbsolutePath().toString()); Process attach = pb.start(); if (!attach.waitFor(90, TimeUnit.SECONDS)) { attach.destroyForcibly(); Assertions.fail("as.sh attach 超时: " + attachLog); } if (attach.exitValue() != 0) { Assertions.fail("as.sh attach 失败(exit=" + attach.exitValue() + "): " + attachLog); } } private static Process startTargetJvm(Path targetLog) throws IOException { String javaBin = Paths.get(System.getProperty("java.home"), "bin", "java").toString(); String classpath = Paths.get(System.getProperty("basedir"), "target", "test-classes").toString(); ProcessBuilder pb = new ProcessBuilder(javaBin, "-cp", classpath, TargetJvmApp.class.getName()); pb.redirectErrorStream(true); pb.redirectOutput(targetLog.toFile()); return pb.start(); } private static Path resolveArthasBinDir() { String basedir = System.getProperty("basedir"); assertThat(basedir).as("Maven surefire/failsafe should set system property 'basedir'").isNotBlank(); return Paths.get(basedir).resolve("../packaging/target/arthas-bin").normalize(); } private static int findFreePort() throws IOException { try (java.net.ServerSocket socket = new java.net.ServerSocket(0)) { socket.setReuseAddress(true); return socket.getLocalPort(); } } private static void waitForPortOpen(String host, int port, Duration timeout) throws InterruptedException { long deadline = System.nanoTime() + timeout.toNanos(); while (System.nanoTime() < deadline) { try (Socket socket = new Socket()) { socket.connect(new InetSocketAddress(host, port), 500); return; } catch (IOException ignored) { Thread.sleep(200); } } throw new IllegalStateException("等待端口监听超时: " + host + ":" + port); } private static boolean isWindows() { String os = System.getProperty("os.name"); return os != null && os.toLowerCase(Locale.ROOT).contains("win"); } private static void deleteDirectoryQuietly(Path dir) { try { if (!Files.exists(dir)) { return; } Files.walk(dir) .sorted(Comparator.reverseOrder()) .map(Path::toFile) .forEach(File::delete); } catch (Exception ignored) { } } private static final class ProcessPid { private ProcessPid() { } static long pidOf(Process process) { // Java 9+ try { return (Long) Process.class.getMethod("pid").invoke(process); } catch (Exception ignored) { // Java 8 fallback } try { java.lang.reflect.Field pidField = process.getClass().getDeclaredField("pid"); pidField.setAccessible(true); Object value = pidField.get(process); if (value instanceof Number) { return ((Number) value).longValue(); } throw new IllegalStateException("Unsupported pid field type: " + value); } catch (Exception e) { throw new IllegalStateException("无法获取目标 JVM pid", e); } } } private static final class StreamableMcpHttpClient { private final String baseUrl; private final String mcpEndpoint; StreamableMcpHttpClient(String host, int port, String mcpEndpoint) { this.baseUrl = "http://" + host + ":" + port; this.mcpEndpoint = mcpEndpoint; } String initialize() throws Exception { McpSchema.InitializeRequest init = new McpSchema.InitializeRequest( McpSchema.LATEST_PROTOCOL_VERSION, new McpSchema.ClientCapabilities(null, null, null, null), new McpSchema.Implementation("arthas-mcp-it", "1.0.0") ); McpSchema.JSONRPCRequest request = new McpSchema.JSONRPCRequest( McpSchema.JSONRPC_VERSION, McpSchema.METHOD_INITIALIZE, 1, init ); HttpURLConnection conn = openPostConnection(null); writeJson(conn, request); int code = conn.getResponseCode(); String body = readBody(conn); if (code != 200) { throw new IllegalStateException("initialize 失败: http=" + code + ", body=" + body); } String sessionId = conn.getHeaderField(HttpHeaders.MCP_SESSION_ID); if (sessionId == null || sessionId.trim().isEmpty()) { throw new IllegalStateException("initialize 未返回 mcp-session-id header, body=" + body); } McpSchema.JSONRPCMessage msg = McpSchema.deserializeJsonRpcMessage(OBJECT_MAPPER, body); if (!(msg instanceof McpSchema.JSONRPCResponse)) { throw new IllegalStateException("initialize 响应不是 JSONRPCResponse: " + body); } McpSchema.JSONRPCResponse resp = (McpSchema.JSONRPCResponse) msg; if (resp.getError() != null) { throw new IllegalStateException("initialize 返回 error: " + OBJECT_MAPPER.writeValueAsString(resp.getError())); } return sessionId; } void sendInitializedNotification(String sessionId) throws Exception { McpSchema.JSONRPCNotification notification = new McpSchema.JSONRPCNotification( McpSchema.JSONRPC_VERSION, McpSchema.METHOD_NOTIFICATION_INITIALIZED, Collections.emptyMap() ); HttpURLConnection conn = openPostConnection(sessionId); writeJson(conn, notification); int code = conn.getResponseCode(); if (code != 202 && code != 200) { throw new IllegalStateException("notifications/initialized 失败: http=" + code + ", body=" + readBody(conn)); } } McpSchema.ListToolsResult listTools(String sessionId) throws Exception { McpSchema.PaginatedRequest params = new McpSchema.PaginatedRequest(null); McpSchema.JSONRPCRequest request = new McpSchema.JSONRPCRequest( McpSchema.JSONRPC_VERSION, McpSchema.METHOD_TOOLS_LIST, 2, params ); McpSchema.JSONRPCResponse response = postRequestExpectSseResponse(sessionId, request, Duration.ofSeconds(30)); if (response.getError() != null) { throw new IllegalStateException("tools/list 返回 error: " + OBJECT_MAPPER.writeValueAsString(response.getError())); } return OBJECT_MAPPER.convertValue(response.getResult(), McpSchema.ListToolsResult.class); } McpSchema.CallToolResult callTool(String sessionId, String toolName, Map arguments) throws Exception { McpSchema.CallToolRequest params = new McpSchema.CallToolRequest(toolName, arguments, null); McpSchema.JSONRPCRequest request = new McpSchema.JSONRPCRequest( McpSchema.JSONRPC_VERSION, McpSchema.METHOD_TOOLS_CALL, 3, params ); McpSchema.JSONRPCResponse response = postRequestExpectSseResponse(sessionId, request, Duration.ofSeconds(60)); if (response.getError() != null) { throw new IllegalStateException("tools/call 返回 error: " + OBJECT_MAPPER.writeValueAsString(response.getError())); } return OBJECT_MAPPER.convertValue(response.getResult(), McpSchema.CallToolResult.class); } private HttpURLConnection openPostConnection(String sessionId) throws IOException { URL url = new URL(baseUrl + mcpEndpoint); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5_000); conn.setReadTimeout(30_000); conn.setDoOutput(true); conn.setRequestProperty("Content-Type", "application/json"); conn.setRequestProperty("Accept", "text/event-stream, application/json"); if (sessionId != null) { conn.setRequestProperty(HttpHeaders.MCP_SESSION_ID, sessionId); } return conn; } private static void writeJson(HttpURLConnection conn, Object body) throws IOException { byte[] bytes = OBJECT_MAPPER.writeValueAsBytes(body); conn.setFixedLengthStreamingMode(bytes.length); try (OutputStream os = conn.getOutputStream()) { os.write(bytes); } } private static String readBody(HttpURLConnection conn) throws IOException { InputStream is = null; try { is = conn.getInputStream(); } catch (IOException e) { is = conn.getErrorStream(); } if (is == null) { return ""; } try (BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) { StringBuilder sb = new StringBuilder(); String line; while ((line = reader.readLine()) != null) { sb.append(line); } return sb.toString(); } } private McpSchema.JSONRPCResponse postRequestExpectSseResponse(String sessionId, McpSchema.JSONRPCRequest request, Duration timeout) throws Exception { HttpURLConnection conn = openPostConnection(sessionId); conn.setReadTimeout((int) timeout.toMillis()); writeJson(conn, request); int code = conn.getResponseCode(); if (code != 200) { throw new IllegalStateException(request.getMethod() + " 失败: http=" + code + ", body=" + readBody(conn)); } try (InputStream is = conn.getInputStream()) { return readJsonRpcResponseFromSse(is, request.getId()); } } private static McpSchema.JSONRPCResponse readJsonRpcResponseFromSse(InputStream inputStream, Object expectedId) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8)); String line; String data = null; while ((line = reader.readLine()) != null) { if (line.startsWith("data:")) { data = line.substring("data:".length()).trim(); continue; } if (line.isEmpty() && data != null) { McpSchema.JSONRPCMessage msg = McpSchema.deserializeJsonRpcMessage(OBJECT_MAPPER, data); data = null; if (msg instanceof McpSchema.JSONRPCResponse) { McpSchema.JSONRPCResponse resp = (McpSchema.JSONRPCResponse) msg; if (Objects.equals(resp.getId(), expectedId)) { return resp; } } } } throw new IllegalStateException("未从 SSE 流中读取到期望的 JSONRPCResponse, id=" + expectedId); } } } ================================================ FILE: arthas-mcp-integration-test/src/test/java/com/taobao/arthas/mcp/it/TargetJvmApp.java ================================================ package com.taobao.arthas.mcp.it; public class TargetJvmApp { private static final TargetJvmApp INSTANCE = new TargetJvmApp(); /** * 持续调用的方法，用于触发 watch/trace/monitor/stack/tt 等需要方法执行事件的工具。 */ public int hotMethod(int value) { return compute(value) + 1; } private int compute(int value) { return value * 2; } public static void main(String[] args) throws Exception { System.out.println("TargetJvmApp started."); while (true) { INSTANCE.hotMethod((int) (System.nanoTime() & 0xFF)); Thread.sleep(50); } } } ================================================ FILE: arthas-mcp-server/README.md ================================================ # arthas-mcp-server ## 项目简介 `arthas-mcp-server` 是 [Arthas](https://github.com/alibaba/arthas) 的实验模块，实现了基于 MCP（Model Context Protocol）协议（版本 2025-03-26）的服务端。该模块通过 HTTP/Netty 提供统一的 JSON-RPC 2.0 接口，支持 AI 使用工具调用的方式执行 arthas 的命令。 Arthas MCP 服务集成了 26 个核心诊断工具，按功能分类如下： ### JVM 相关工具 • **dashboard** - 实时展示 JVM/应用面板，支持自定义刷新间隔和次数控制 • **heapdump** - 生成 JVM heap dump 文件，支持 --live 选项只导出存活对象 • **jvm** - 查看当前 JVM 的信息 • **mbean** - 查看或监控 MBean 属性信息，支持实时刷新和模式匹配 • **memory** - 查看 JVM 的内存信息 • **thread** - 查看线程信息及堆栈，支持查找阻塞线程和最忙线程 • **sysprop** - 查看或修改系统属性，支持动态修改 JVM 系统属性 • **sysenv** - 查看系统环境变量 • **vmoption** - 查看或更新 VM 选项，支持动态调整 JVM 参数 • **perfcounter** - 查看 Perf Counter 信息，显示 JVM 性能计数器 • **vmtool** - 虚拟机工具集合，支持强制 GC、获取实例、线程中断等 • **getstatic** - 查看类的静态字段值 • **ognl** - 执行 OGNL 表达式，动态调用方法和访问字段 ### Class/ClassLoader 相关工具 • **sc** - 查看 JVM 已加载的类信息，支持详细信息和统计 • **sm** - 查看已加载类的方法信息，显示方法签名和修饰符 • **jad** - 反编译指定已加载类的源码，将字节码反编译为 Java 代码 • **classloader** - ClassLoader 诊断工具，查看类加载器统计、继承树、URLs • **mc** - 内存编译器，将 Java 源码编译为字节码文件 • **redefine** - 重定义类，加载外部 class 文件重新定义 JVM 中的类 • **retransform** - 重新转换类，触发类的重新转换和字节码增强 • **dump** - 将 JVM 中实际运行的 class 字节码导出到指定目录 ### 监控诊断工具 • **monitor** - 实时监控指定类的指定方法的调用情况 • **stack** - 输出当前方法被调用的调用路径，帮助分析方法的调用链路 • **trace** - 追踪方法内部调用路径，输出每个节点的耗时信息，支持条件过滤和耗时阈值设置 • **tt** - 方法执行数据的时空隧道，记录下指定方法每次调用的入参和返回信息，支持事后查看和重放 • **watch** - 观察指定方法的调用情况，包含入参、返回值和抛出异常等信息，支持实时流式输出 ## 快速开始 首先需要在 arthas.properties 中配置 mcp 服务的 path： ```JSON # MCP (Model Context Protocol) configuration arthas.mcpEndpoint=/mcp ``` 正常启动服务之后，服务对外暴露8563，在 cherry-studio/cline 等 ai 客户端中配置： 在设置中添加 MCP 服务器： ```JSON { "mcpServers": { "arthas-mcp": { "type": "streamableHttp", "url": "http://localhost:8563/mcp" } } } ``` 开启认证服务的时候需要添加 headers，这里的 token 直接使用 password： ```java "arthas-mcp-streamable-server": { "type": "streamableHttp", "url": "http://localhost:8563/mcp", "headers": { "Authorization": "Bearer password" } } ``` ================================================ FILE: arthas-mcp-server/pom.xml ================================================ 4.0.0 arthas-all com.taobao.arthas ${revision} ../pom.xml arthas-mcp-server arthas-mcp-server https://github.com/alibaba/arthas 8 8 UTF-8 com.taobao.arthas arthas-model ${project.version} io.netty netty-buffer io.netty netty-handler io.netty netty-transport io.netty netty-codec-http com.alibaba.fastjson2 fastjson2 com.fasterxml.jackson.core jackson-core 2.18.1 com.fasterxml.jackson.core jackson-databind 2.18.1 com.fasterxml.jackson.datatype jackson-datatype-jsr310 2.18.1 org.slf4j slf4j-api org.junit.jupiter junit-jupiter test org.assertj assertj-core test arthas-mcp-server src/main/resources false **/* org.apache.maven.plugins maven-compiler-plugin 8 8 UTF-8 true ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/CommandExecutor.java ================================================ package com.taobao.arthas.mcp.server; import java.util.Map; /** * 命令执行器接口 * * @author Yeaury 2025/5/26 */ public interface CommandExecutor { default Map executeSync(String commandLine, long timeout) { return executeSync(commandLine, timeout, null, null, null); } default Map executeSync(String commandLine, Object authSubject) { return executeSync(commandLine, 30000L, null, authSubject, null); } /** * 同步执行命令，支持指定 userId * * @param commandLine 命令行 * @param authSubject 认证主体 * @param userId 用户 ID，用于统计上报 * @return 执行结果 */ default Map executeSync(String commandLine, Object authSubject, String userId) { return executeSync(commandLine, 30000L, null, authSubject, userId); } /** * 同步执行命令 * * @param commandLine 命令行 * @param timeout 超时时间 * @param sessionId session ID，如果为null则创建临时session * @param authSubject 认证主体，如果不为null则应用到session * @param userId 用户 ID，用于统计上报 * @return 执行结果 */ Map executeSync(String commandLine, long timeout, String sessionId, Object authSubject, String userId); Map executeAsync(String commandLine, String sessionId); Map pullResults(String sessionId, String consumerId); Map interruptJob(String sessionId); Map createSession(); Map closeSession(String sessionId); void setSessionAuth(String sessionId, Object authSubject); /** * 设置 session 的 userId * * @param sessionId session ID * @param userId 用户 ID */ void setSessionUserId(String sessionId, String userId); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/config/McpServerProperties.java ================================================ package com.taobao.arthas.mcp.server.protocol.config; import com.fasterxml.jackson.databind.ObjectMapper; import java.time.Duration; import java.util.HashMap; import java.util.Map; /** * MCP Server Configuration Properties * Used to manage all configuration items for MCP server. * * @author Yeaury */ public class McpServerProperties { /** * Server basic information */ private final String name; private final String version; private final String instructions; /** * Server capability configuration */ private final boolean toolChangeNotification; private final boolean resourceChangeNotification; private final boolean promptChangeNotification; private final boolean resourceSubscribe; private final String mcpEndpoint; /** * Timeout configuration */ private final Duration requestTimeout; private final Duration initializationTimeout; private final ObjectMapper objectMapper; private final ServerProtocol protocol; /** * (Optional) response MIME type per tool name. */ private Map toolResponseMimeType = new HashMap<>(); /** * Private constructor, can only be created through Builder */ private McpServerProperties(Builder builder) { this.name = builder.name; this.version = builder.version; this.instructions = builder.instructions; this.toolChangeNotification = builder.toolChangeNotification; this.resourceChangeNotification = builder.resourceChangeNotification; this.promptChangeNotification = builder.promptChangeNotification; this.resourceSubscribe = builder.resourceSubscribe; this.mcpEndpoint = builder.mcpEndpoint; this.requestTimeout = builder.requestTimeout; this.initializationTimeout = builder.initializationTimeout; this.objectMapper = builder.objectMapper; this.protocol = builder.protocol; } /** * Create Builder with default configuration */ public static Builder builder() { return new Builder(); } public enum ServerProtocol { STREAMABLE, STATELESS } /** * Get server name * @return Server name */ public String getName() { return name; } /** * Get server version * @return Server version */ public String getVersion() { return version; } /** * Get server instructions * @return Server instructions */ public String getInstructions() { return instructions; } /** * Get tool change notification * @return Tool change notification */ public boolean isToolChangeNotification() { return toolChangeNotification; } /** * Get resource change notification * @return Resource change notification */ public boolean isResourceChangeNotification() { return resourceChangeNotification; } /** * Get prompt change notification * @return Prompt change notification */ public boolean isPromptChangeNotification() { return promptChangeNotification; } /** * Get resource subscribe * @return Resource subscribe */ public boolean isResourceSubscribe() { return resourceSubscribe; } /** * Get SSE endpoint * @return SSE endpoint */ public String getMcpEndpoint() { return mcpEndpoint; } /** * Get request timeout * @return Request timeout */ public Duration getRequestTimeout() { return requestTimeout; } /** * Get initialization timeout * @return Initialization timeout */ public Duration getInitializationTimeout() { return initializationTimeout; } /** * Get object mapper * @return Object mapper */ public ObjectMapper getObjectMapper() { return objectMapper; } public ServerProtocol getProtocol() { return protocol; } public Map getToolResponseMimeType() { return toolResponseMimeType; } public void setToolResponseMimeType(Map toolResponseMimeType) { this.toolResponseMimeType = toolResponseMimeType; } /** * Builder class for McpServerProperties */ public static class Builder { // Default values private String name = "mcp-server"; private String version = "1.0.0"; private String instructions; private boolean toolChangeNotification = true; private boolean resourceChangeNotification = false; private boolean promptChangeNotification = false; private boolean resourceSubscribe = false; private String bindAddress = "localhost"; private int port = 8080; private String mcpEndpoint = "/mcp"; private Duration requestTimeout = Duration.ofSeconds(10); private Duration initializationTimeout = Duration.ofSeconds(30); private ObjectMapper objectMapper; private ServerProtocol protocol = ServerProtocol.STREAMABLE; public Builder() { // Private constructor to prevent direct instantiation } public Builder name(String name) { this.name = name; return this; } public Builder version(String version) { this.version = version; return this; } public Builder instructions(String instructions) { this.instructions = instructions; return this; } public Builder toolChangeNotification(boolean toolChangeNotification) { this.toolChangeNotification = toolChangeNotification; return this; } public Builder resourceChangeNotification(boolean resourceChangeNotification) { this.resourceChangeNotification = resourceChangeNotification; return this; } public Builder promptChangeNotification(boolean promptChangeNotification) { this.promptChangeNotification = promptChangeNotification; return this; } public Builder resourceSubscribe(boolean resourceSubscribe) { this.resourceSubscribe = resourceSubscribe; return this; } public Builder mcpEndpoint(String mcpEndpoint) { this.mcpEndpoint = mcpEndpoint; return this; } public Builder requestTimeout(Duration requestTimeout) { this.requestTimeout = requestTimeout; return this; } public Builder initializationTimeout(Duration initializationTimeout) { this.initializationTimeout = initializationTimeout; return this; } public Builder objectMapper(ObjectMapper objectMapper) { this.objectMapper = objectMapper; return this; } public Builder protocol(ServerProtocol protocol) { this.protocol = protocol; return this; } /** * Build McpServerProperties instance */ public McpServerProperties build() { return new McpServerProperties(this); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/DefaultMcpStatelessServerHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.CommandExecutor; import com.taobao.arthas.mcp.server.protocol.spec.McpError; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import com.taobao.arthas.mcp.server.session.ArthasCommandSessionManager; import com.taobao.arthas.mcp.server.util.McpAuthExtractor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.Map; import java.util.UUID; import java.util.concurrent.CompletableFuture; import java.util.concurrent.CompletionException; class DefaultMcpStatelessServerHandler implements McpStatelessServerHandler { private static final Logger logger = LoggerFactory.getLogger(DefaultMcpStatelessServerHandler.class); Map> requestHandlers; Map notificationHandlers; private final CommandExecutor commandExecutor; private final ArthasCommandSessionManager commandSessionManager; public DefaultMcpStatelessServerHandler(Map> requestHandlers, Map notificationHandlers, CommandExecutor commandExecutor) { this.requestHandlers = requestHandlers; this.notificationHandlers = notificationHandlers; this.commandExecutor = commandExecutor; this.commandSessionManager = new ArthasCommandSessionManager(commandExecutor); } @Override public CompletableFuture handleRequest(McpTransportContext ctx, McpSchema.JSONRPCRequest req) { // Create a temporary session for this request String tempSessionId = UUID.randomUUID().toString(); ArthasCommandSessionManager.CommandSessionBinding binding = commandSessionManager.createCommandSession(tempSessionId); ArthasCommandContext commandContext = new ArthasCommandContext(commandExecutor, binding); // Extract auth subject from transport context and apply to session Object authSubject = ctx.get(McpAuthExtractor.MCP_AUTH_SUBJECT_KEY); if (authSubject != null) { commandExecutor.setSessionAuth(binding.getArthasSessionId(), authSubject); logger.debug("Applied auth subject to stateless session: {}", binding.getArthasSessionId()); } // Extract userId from transport context and apply to session String userId = (String) ctx.get(McpAuthExtractor.MCP_USER_ID_KEY); if (userId != null) { commandExecutor.setSessionUserId(binding.getArthasSessionId(), userId); logger.debug("Applied userId to stateless session: {}", binding.getArthasSessionId()); } McpStatelessRequestHandler handler = requestHandlers.get(req.getMethod()); if (handler == null) { // Clean up session if handler not found closeSession(binding); CompletableFuture f = new CompletableFuture<>(); f.completeExceptionally(new McpError("Missing handler for request type: " + req.getMethod())); return f; } try { @SuppressWarnings("unchecked") CompletableFuture result = (CompletableFuture) handler .handle(ctx, commandContext, req.getParams()); return result.handle((r, ex) -> { // Clean up session after execution closeSession(binding); if (ex != null) { Throwable cause = ex instanceof CompletionException ? ex.getCause() : ex; return new McpSchema.JSONRPCResponse(McpSchema.JSONRPC_VERSION, req.getId(), null, new McpSchema.JSONRPCResponse.JSONRPCError(McpSchema.ErrorCodes.INTERNAL_ERROR, cause.getMessage(), null)); } return new McpSchema.JSONRPCResponse(McpSchema.JSONRPC_VERSION, req.getId(), r, null); }); } catch (Throwable t) { // Clean up session on error closeSession(binding); CompletableFuture f = new CompletableFuture<>(); f.completeExceptionally(t); return f; } } private void closeSession(ArthasCommandSessionManager.CommandSessionBinding binding) { try { commandExecutor.closeSession(binding.getArthasSessionId()); } catch (Exception e) { logger.warn("Failed to close temporary session: {}", binding.getArthasSessionId(), e); } } @Override public CompletableFuture handleNotification(McpTransportContext ctx, McpSchema.JSONRPCNotification note) { McpStatelessNotificationHandler handler = notificationHandlers.get(note.getMethod()); if (handler == null) { logger.warn("Missing handler for notification: {}", note.getMethod()); return CompletableFuture.completedFuture(null); } try { return handler.handle(ctx, note.getParams()); } catch (Throwable t) { CompletableFuture f = new CompletableFuture<>(); f.completeExceptionally(t); return f; } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/DefaultMcpTransportContext.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; /** * Default implementation for {@link McpTransportContext} which uses a Thread-safe map. * Objects of this kind are mutable. */ public class DefaultMcpTransportContext implements McpTransportContext { private final Map storage; /** * Create an empty instance. */ public DefaultMcpTransportContext() { this.storage = new ConcurrentHashMap<>(); } DefaultMcpTransportContext(Map storage) { this.storage = storage; } @Override public Object get(String key) { return this.storage.get(key); } @Override public void put(String key, Object value) { if (value != null) { this.storage.put(key, value); } else { this.storage.remove(key); } } /** * Allows copying the contents. * @return new instance with the copy of the underlying map */ public McpTransportContext copy() { return new DefaultMcpTransportContext(new ConcurrentHashMap<>(this.storage)); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpInitRequestHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import java.util.concurrent.CompletableFuture; /** * Handles MCP initialization requests from clients using CompletableFuture for async operations. * This is the Netty-specific version that doesn't depend on Reactor. */ public interface McpInitRequestHandler { /** * Handles the initialization request. * @param initializeRequest the initialization request by the client * @return a CompletableFuture that will emit the result of the initialization */ CompletableFuture handle(McpSchema.InitializeRequest initializeRequest); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpNettyServer.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.CommandExecutor; import com.taobao.arthas.mcp.server.protocol.spec.*; import com.taobao.arthas.mcp.server.util.Assert; import com.taobao.arthas.mcp.server.util.Utils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.time.Duration; import java.util.*; import java.util.concurrent.CompletableFuture; import java.util.concurrent.CompletionException; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.CopyOnWriteArrayList; import java.util.function.BiFunction; /** * A Netty-based MCP server implementation that provides access to tools, resources, and prompts. * * @author Yeaury */ public class McpNettyServer { private static final Logger logger = LoggerFactory.getLogger(McpNettyServer.class); private final McpServerTransportProvider mcpTransportProvider; private final ObjectMapper objectMapper; private final McpSchema.ServerCapabilities serverCapabilities; private final McpSchema.Implementation serverInfo; private final String instructions; private final CopyOnWriteArrayList tools = new CopyOnWriteArrayList<>(); private final CopyOnWriteArrayList resourceTemplates = new CopyOnWriteArrayList<>(); private final ConcurrentHashMap resources = new ConcurrentHashMap<>(); private final ConcurrentHashMap prompts = new ConcurrentHashMap<>(); private McpSchema.LoggingLevel minLoggingLevel = McpSchema.LoggingLevel.DEBUG; private List protocolVersions; McpNettyServer(McpStreamableServerTransportProvider mcpTransportProvider, ObjectMapper objectMapper, Duration requestTimeout, McpServerFeatures.McpServerConfig features, CommandExecutor commandExecutor) { this.mcpTransportProvider = mcpTransportProvider; this.objectMapper = objectMapper; this.serverInfo = features.getServerInfo(); this.serverCapabilities = features.getServerCapabilities(); this.instructions = features.getInstructions(); this.tools.addAll(features.getTools()); this.resources.putAll(features.getResources()); this.resourceTemplates.addAll(features.getResourceTemplates()); this.prompts.putAll(features.getPrompts()); Map> requestHandlers = prepareRequestHandlers(); Map notificationHandlers = prepareNotificationHandlers(features); this.protocolVersions = mcpTransportProvider.protocolVersions(); mcpTransportProvider.setSessionFactory(new DefaultMcpStreamableServerSessionFactory(requestTimeout, this::initializeRequestHandler, requestHandlers, notificationHandlers, commandExecutor)); } private Map prepareNotificationHandlers(McpServerFeatures.McpServerConfig features) { Map notificationHandlers = new HashMap<>(); notificationHandlers.put(McpSchema.METHOD_NOTIFICATION_INITIALIZED, (exchange, commandContext, params) -> CompletableFuture.completedFuture(null)); List, CompletableFuture>> rootsChangeConsumers = features .getRootsChangeConsumers(); if (Utils.isEmpty(rootsChangeConsumers)) { rootsChangeConsumers = Collections.singletonList( (exchange, roots) -> CompletableFuture.runAsync(() -> logger.warn("Roots list changed notification, but no consumers provided. Roots list changed: {}", roots)) ); } notificationHandlers.put(McpSchema.METHOD_NOTIFICATION_ROOTS_LIST_CHANGED, rootsListChangedNotificationHandler(rootsChangeConsumers)); return notificationHandlers; } private Map> prepareRequestHandlers() { Map> requestHandlers = new HashMap<>(); // Initialize request handlers for standard MCP methods // Ping MUST respond with an empty data, but not NULL response. requestHandlers.put(McpSchema.METHOD_PING, (exchange, commandContext, params) -> CompletableFuture.completedFuture(Collections.emptyMap())); // Add tools API handlers if the tool capability is enabled if (this.serverCapabilities.getTools() != null) { requestHandlers.put(McpSchema.METHOD_TOOLS_LIST, toolsListRequestHandler()); requestHandlers.put(McpSchema.METHOD_TOOLS_CALL, toolsCallRequestHandler()); } // Add resources API handlers if provided if (this.serverCapabilities.getResources() != null) { requestHandlers.put(McpSchema.METHOD_RESOURCES_LIST, resourcesListRequestHandler()); requestHandlers.put(McpSchema.METHOD_RESOURCES_READ, resourcesReadRequestHandler()); requestHandlers.put(McpSchema.METHOD_RESOURCES_TEMPLATES_LIST, resourceTemplateListRequestHandler()); } // Add prompts API handlers if provider exists if (this.serverCapabilities.getPrompts() != null) { requestHandlers.put(McpSchema.METHOD_PROMPT_LIST, promptsListRequestHandler()); requestHandlers.put(McpSchema.METHOD_PROMPT_GET, promptsGetRequestHandler()); } // Add logging API handlers if the logging capability is enabled if (this.serverCapabilities.getLogging() != null) { requestHandlers.put(McpSchema.METHOD_LOGGING_SET_LEVEL, setLoggerRequestHandler()); } return requestHandlers; } // --------------------------------------- // Lifecycle Management // --------------------------------------- private CompletableFuture initializeRequestHandler( McpSchema.InitializeRequest initializeRequest) { return CompletableFuture.supplyAsync(() -> { logger.info("Client initialize request - Protocol: {}, Capabilities: {}, Info: {}", initializeRequest.getProtocolVersion(), initializeRequest.getCapabilities(), initializeRequest.getClientInfo()); // The server MUST respond with the highest protocol version it supports // if // it does not support the requested (e.g. Client) version. String serverProtocolVersion = protocolVersions.get(protocolVersions.size() - 1); if (protocolVersions.contains(initializeRequest.getProtocolVersion())) { serverProtocolVersion = initializeRequest.getProtocolVersion(); } else { logger.warn( "Client requested unsupported protocol version: {}, " + "so the server will suggest {} instead", initializeRequest.getProtocolVersion(), serverProtocolVersion); } return new McpSchema.InitializeResult(serverProtocolVersion, serverCapabilities, serverInfo, instructions); }); } public McpSchema.ServerCapabilities getServerCapabilities() { return this.serverCapabilities; } public McpSchema.Implementation getServerInfo() { return this.serverInfo; } public CompletableFuture closeGracefully() { return this.mcpTransportProvider.closeGracefully(); } public void close() { this.mcpTransportProvider.close(); } private McpNotificationHandler rootsListChangedNotificationHandler( List, CompletableFuture>> rootsChangeConsumers) { return (exchange, commandContext, params) -> { CompletableFuture futureRoots = exchange.listRoots(); return futureRoots.thenCompose(listRootsResult -> { List roots = listRootsResult.getRoots(); List> futures = new ArrayList<>(); for (BiFunction, CompletableFuture> consumer : rootsChangeConsumers) { CompletableFuture future = consumer.apply(exchange, roots).exceptionally(error -> { logger.error("Error handling roots list change notification", error); return null; }); futures.add(future); } return CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])); }); }; } // --------------------------------------- // Tool Management // --------------------------------------- public CompletableFuture addTool(McpServerFeatures.ToolSpecification toolSpecification) { if (toolSpecification == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool specification must not be null")); return future; } if (toolSpecification.getTool() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool must not be null")); return future; } if (toolSpecification.getCall() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool call handler must not be null")); return future; } if (this.serverCapabilities.getTools() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with tool capabilities")); return future; } return CompletableFuture.supplyAsync(() -> { // Check for duplicate tool names if (this.tools.stream().anyMatch(th -> th.getTool().getName().equals(toolSpecification.getTool().getName()))) { throw new CompletionException( new McpError("Tool with name '" + toolSpecification.getTool().getName() + "' already exists")); } this.tools.add(toolSpecification); logger.debug("Added tool handler: {}", toolSpecification.getTool().getName()); return null; }).thenCompose(ignored -> { if (this.serverCapabilities.getTools().getListChanged()) { return notifyToolsListChanged(); } return CompletableFuture.completedFuture(null); }).exceptionally(ex -> { Throwable cause = ex instanceof CompletionException ? ex.getCause() : ex; logger.error("Error while adding tool", cause); throw new CompletionException(cause); }); } public CompletableFuture removeTool(String toolName) { if (toolName == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool name must not be null")); return future; } if (this.serverCapabilities.getTools() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with tool capabilities")); return future; } return CompletableFuture.supplyAsync(() -> { boolean removed = this.tools.removeIf(spec -> spec.getTool().getName().equals(toolName)); if (!removed) { throw new CompletionException(new McpError("Tool with name '" + toolName + "' not found")); } logger.debug("Removed tool handler: {}", toolName); return null; }).thenCompose(ignored -> { if (this.serverCapabilities.getTools().getListChanged()) { return notifyToolsListChanged(); } return CompletableFuture.completedFuture(null); }).exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; logger.error("Error while removing tool '{}'", toolName, cause); throw new CompletionException(cause); }); } public CompletableFuture notifyToolsListChanged() { logger.debug("Notifying clients about tool list changes"); return this.mcpTransportProvider.notifyClients(McpSchema.METHOD_NOTIFICATION_TOOLS_LIST_CHANGED, null); } private McpRequestHandler toolsListRequestHandler() { return (exchange, commandContext, params) -> { List tools = new ArrayList<>(); for (McpServerFeatures.ToolSpecification toolSpec : this.tools) { tools.add(toolSpec.getTool()); } return CompletableFuture.completedFuture(new McpSchema.ListToolsResult(tools, null)); }; } private McpRequestHandler toolsCallRequestHandler() { return (exchange, commandContext, params) -> { McpSchema.CallToolRequest callToolRequest = objectMapper.convertValue(params, new TypeReference() { }); Optional toolSpecification = this.tools.stream() .filter(tr -> callToolRequest.getName().equals(tr.getTool().getName())) .findAny(); if (!toolSpecification.isPresent()) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("no tool found: " + callToolRequest.getName())); return future; } return toolSpecification.get().getCall().apply(exchange, commandContext, callToolRequest); }; } // --------------------------------------- // Resource Management // --------------------------------------- public CompletableFuture addResource(McpServerFeatures.ResourceSpecification resourceSpecification) { if (resourceSpecification == null || resourceSpecification.getResource() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Resource must not be null")); return future; } if (this.serverCapabilities.getResources() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with resource capabilities")); return future; } return CompletableFuture.supplyAsync(() -> { if (this.resources.putIfAbsent(resourceSpecification.getResource().getUri(), resourceSpecification) != null) { throw new CompletionException(new McpError( "Resource with URI '" + resourceSpecification.getResource().getUri() + "' already exists")); } logger.debug("Added resource handler: {}", resourceSpecification.getResource().getUri()); return null; }).thenCompose(ignored -> { if (this.serverCapabilities.getResources().getListChanged()) { return notifyResourcesListChanged(); } return CompletableFuture.completedFuture(null); }).exceptionally(ex -> { Throwable cause = ex instanceof CompletionException ? ex.getCause() : ex; logger.error("Error while adding resource '{}'", resourceSpecification.getResource().getUri(), cause); throw new CompletionException(cause); }); } public CompletableFuture removeResource(String resourceUri) { if (resourceUri == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Resource URI must not be null")); return future; } if (this.serverCapabilities.getResources() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with resource capabilities")); return future; } return CompletableFuture.supplyAsync(() -> { McpServerFeatures.ResourceSpecification removed = this.resources.remove(resourceUri); if (removed == null) { throw new CompletionException(new McpError("Resource with URI '" + resourceUri + "' not found")); } logger.debug("Removed resource handler: {}", resourceUri); return null; }).thenCompose(ignored -> { if (this.serverCapabilities.getResources().getListChanged()) { return notifyResourcesListChanged(); } return CompletableFuture.completedFuture(null); }).exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; logger.error("Error while removing resource '{}'", resourceUri, cause); throw new CompletionException(cause); }); } public CompletableFuture notifyResourcesListChanged() { return this.mcpTransportProvider.notifyClients(McpSchema.METHOD_NOTIFICATION_RESOURCES_LIST_CHANGED, null); } private McpRequestHandler resourcesListRequestHandler() { return (exchange, commandContext, params) -> { List resourceList = new ArrayList<>(); for (McpServerFeatures.ResourceSpecification spec : this.resources.values()) { resourceList.add(spec.getResource()); } return CompletableFuture.completedFuture(new McpSchema.ListResourcesResult(resourceList, null)); }; } private McpRequestHandler resourceTemplateListRequestHandler() { return (exchange, commandContext, params) -> CompletableFuture .completedFuture(new McpSchema.ListResourceTemplatesResult(this.resourceTemplates, null)); } private McpRequestHandler resourcesReadRequestHandler() { return (exchange, commandContext, params) -> { McpSchema.ReadResourceRequest resourceRequest = objectMapper.convertValue(params, new TypeReference() { }); String resourceUri = resourceRequest.getUri(); McpServerFeatures.ResourceSpecification specification = this.resources.get(resourceUri); if (specification != null) { return specification.getReadHandler().apply(exchange, resourceRequest); } CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Resource not found: " + resourceUri)); return future; }; } // --------------------------------------- // Prompt Management // --------------------------------------- public CompletableFuture addPrompt(McpServerFeatures.PromptSpecification promptSpecification) { if (promptSpecification == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Prompt specification must not be null")); return future; } if (this.serverCapabilities.getPrompts() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with prompt capabilities")); return future; } return CompletableFuture.supplyAsync(() -> { McpServerFeatures.PromptSpecification existing = this.prompts .putIfAbsent(promptSpecification.getPrompt().getName(), promptSpecification); if (existing != null) { throw new CompletionException( new McpError("Prompt with name '" + promptSpecification.getPrompt().getName() + "' already exists")); } logger.debug("Added prompt handler: {}", promptSpecification.getPrompt().getName()); return null; }).thenCompose(ignored -> { if (this.serverCapabilities.getPrompts().getListChanged()) { return notifyPromptsListChanged(); } return CompletableFuture.completedFuture(null); }).exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; logger.error("Error while adding prompt '{}'", promptSpecification.getPrompt().getName(), cause); throw new CompletionException(cause); }); } public CompletableFuture removePrompt(String promptName) { if (promptName == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Prompt name must not be null")); return future; } if (this.serverCapabilities.getPrompts() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with prompt capabilities")); return future; } return CompletableFuture.supplyAsync(() -> { McpServerFeatures.PromptSpecification removed = this.prompts.remove(promptName); if (removed == null) { throw new CompletionException(new McpError("Prompt with name '" + promptName + "' not found")); } logger.debug("Removed prompt handler: {}", promptName); return null; }).thenCompose(ignored -> { if (this.serverCapabilities.getPrompts().getListChanged()) { return notifyPromptsListChanged(); } return CompletableFuture.completedFuture(null); }).exceptionally(ex -> { Throwable cause = ex instanceof CompletionException ? ex.getCause() : ex; logger.error("Error while removing prompt '{}'", promptName, cause); throw new CompletionException(cause); }); } public CompletableFuture notifyPromptsListChanged() { return this.mcpTransportProvider.notifyClients(McpSchema.METHOD_NOTIFICATION_PROMPTS_LIST_CHANGED, null); } private McpRequestHandler promptsListRequestHandler() { return (exchange, commandContext, params) -> { List promptList = new ArrayList<>(); for (McpServerFeatures.PromptSpecification promptSpec : this.prompts.values()) { promptList.add(promptSpec.getPrompt()); } return CompletableFuture.completedFuture(new McpSchema.ListPromptsResult(promptList, null)); }; } private McpRequestHandler promptsGetRequestHandler() { return (exchange, commandContext, params) -> { McpSchema.GetPromptRequest promptRequest = objectMapper.convertValue(params, new TypeReference() { }); McpServerFeatures.PromptSpecification specification = this.prompts.get(promptRequest.getName()); if (specification != null) { return specification.getPromptHandler().apply(exchange, promptRequest); } CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Prompt not found: " + promptRequest.getName())); return future; }; } // --------------------------------------- // Logging Management // --------------------------------------- public CompletableFuture loggingNotification( McpSchema.LoggingMessageNotification loggingMessageNotification) { Assert.notNull(loggingMessageNotification, "Logging message must not be null"); if (loggingMessageNotification.getLevel().level() < minLoggingLevel.level()) { return CompletableFuture.completedFuture(null); } return this.mcpTransportProvider.notifyClients(McpSchema.METHOD_NOTIFICATION_MESSAGE, loggingMessageNotification); } private McpRequestHandler> setLoggerRequestHandler() { return (exchange, commandContext, params) -> { try { McpSchema.SetLevelRequest request = this.objectMapper.convertValue(params, McpSchema.SetLevelRequest.class); this.minLoggingLevel = request.getLevel(); return CompletableFuture.completedFuture(Collections.emptyMap()); } catch (Exception e) { CompletableFuture> future = new CompletableFuture<>(); future.completeExceptionally(new McpError("An error occurred while processing a request to set the log level: " + e.getMessage())); return future; } }; } // --------------------------------------- // Sampling // --------------------------------------- public void setProtocolVersions(List protocolVersions) { this.protocolVersions = protocolVersions; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpNettyServerExchange.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.fasterxml.jackson.core.type.TypeReference; import com.taobao.arthas.mcp.server.protocol.spec.McpError; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema.LoggingLevel; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema.LoggingMessageNotification; import com.taobao.arthas.mcp.server.protocol.spec.McpSession; import com.taobao.arthas.mcp.server.util.Assert; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.concurrent.CompletableFuture; /** * Represents the interaction between MCP server and client. Provides methods for communication, logging, and context management. * This class is focused only on MCP protocol communication and does not handle command execution directly. * *

* McpNettyServerExchange provides various methods for communicating with the client, including: *

    *
  • Sending requests and notifications *
  • Getting client capabilities and information *
  • Handling logging notifications *
  • Creating client messages *
  • Managing root directories *
  • Streamable task management *
*

* Each exchange object is associated with a specific client session, providing context and capabilities for that session. */ public class McpNettyServerExchange { private static final Logger logger = LoggerFactory.getLogger(McpNettyServerExchange.class); private final String sessionId; private final McpSession session; private final McpSchema.ClientCapabilities clientCapabilities; private final McpSchema.Implementation clientInfo; private final McpTransportContext transportContext; private volatile LoggingLevel minLoggingLevel = LoggingLevel.INFO; private static final TypeReference CREATE_MESSAGE_RESULT_TYPE_REF = new TypeReference() { }; private static final TypeReference LIST_ROOTS_RESULT_TYPE_REF = new TypeReference() { }; private static final TypeReference ELICIT_USER_INPUT_RESULT_TYPE_REF = new TypeReference() { }; public static final TypeReference OBJECT_TYPE_REF = new TypeReference() { }; public McpNettyServerExchange(String sessionId, McpSession session, McpSchema.ClientCapabilities clientCapabilities, McpSchema.Implementation clientInfo, McpTransportContext transportContext) { this.sessionId = sessionId; this.session = session; this.clientCapabilities = clientCapabilities; this.clientInfo = clientInfo; this.transportContext = transportContext; } /** * Get client capabilities. * @return Client capabilities */ public McpSchema.ClientCapabilities getClientCapabilities() { return this.clientCapabilities; } /** * Get client information. * @return Client information */ public McpSchema.Implementation getClientInfo() { return this.clientInfo; } /** * Get the MCP server session associated with this exchange. * @return The MCP server session */ public McpSession getSession() { return this.session; } /** * Get the transport context associated with this exchange. * @return The transport context */ public McpTransportContext getTransportContext() { return this.transportContext; } /** * Create a new message using client sampling capability. MCP provides a standardized way for servers to request * LLM sampling ("completion" or "generation") through the client. This flow allows clients to maintain control * over model access, selection, and permissions while enabling servers to leverage AI capabilities—without server * API keys. Servers can request text or image-based interactions and can optionally include context from the MCP * server in their prompts. * @param createMessageRequest Request to create a new message * @return A CompletableFuture that completes when the message is created */ public CompletableFuture createMessage( McpSchema.CreateMessageRequest createMessageRequest) { if (this.clientCapabilities == null) { logger.error("Client not initialized, cannot create message"); CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Client must be initialized first. Please call initialize method!")); return future; } if (this.clientCapabilities.getSampling() == null) { logger.error("Client not configured with sampling capability, cannot create message"); CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Client must be configured with sampling capability")); return future; } logger.debug("Creating client message, session ID: {}", this.sessionId); return this.session .sendRequest(McpSchema.METHOD_SAMPLING_CREATE_MESSAGE, createMessageRequest, CREATE_MESSAGE_RESULT_TYPE_REF) .whenComplete((result, error) -> { if (error != null) { logger.error("Failed to create message, session ID: {}, error: {}", this.sessionId, error.getMessage()); } else { logger.debug("Message created successfully, session ID: {}", this.sessionId); } }); } /** * Get a list of all root directories provided by the client. * @return Sends out the CompletableFuture of the root list result */ public CompletableFuture listRoots() { return this.listRoots(null); } /** * Get the client-provided list of pagination roots. * Optional pagination cursor @param cursor for the previous list request * @return Emits a CompletableFuture containing the results of the root list */ public CompletableFuture listRoots(String cursor) { logger.debug("Requesting root list, session ID: {}, cursor: {}", this.sessionId, cursor); return this.session .sendRequest(McpSchema.METHOD_ROOTS_LIST, new McpSchema.PaginatedRequest(cursor), LIST_ROOTS_RESULT_TYPE_REF) .whenComplete((result, error) -> { if (error != null) { logger.error("Failed to get root list, session ID: {}, error: {}", this.sessionId, error.getMessage()); } else { logger.debug("Root list retrieved successfully, session ID: {}", this.sessionId); } }); } public CompletableFuture loggingNotification(LoggingMessageNotification loggingMessageNotification) { if (loggingMessageNotification == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("log messages cannot be empty")); return future; } if (this.isNotificationForLevelAllowed(loggingMessageNotification.getLevel())) { return this.session.sendNotification(McpSchema.METHOD_NOTIFICATION_MESSAGE, loggingMessageNotification) .whenComplete((result, error) -> { if (error != null) { logger.error("Failed to send logging notification, level: {}, session ID: {}, error: {}", loggingMessageNotification.getLevel(), this.sessionId, error.getMessage()); } }); } return CompletableFuture.completedFuture(null); } public CompletableFuture ping() { return this.session.sendRequest(McpSchema.METHOD_PING, null, OBJECT_TYPE_REF); } public CompletableFuture createElicitation(McpSchema.ElicitRequest request) { if (request == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("elicit request cannot be null")); return future; } if (this.clientCapabilities == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Client must be initialized. Call the initialize method first!")); return future; } if (this.clientCapabilities.getElicitation() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Client must be configured with elicitation capabilities")); return future; } return this.session .sendRequest(McpSchema.METHOD_ELICITATION_CREATE, request, ELICIT_USER_INPUT_RESULT_TYPE_REF) .whenComplete((result, error) -> { if (error != null) { logger.error("Failed to elicit user input, session ID: {}, error: {}", this.sessionId, error.getMessage()); } else { logger.debug("User input elicitation completed, session ID: {}", this.sessionId); } }); } public void setMinLoggingLevel(LoggingLevel minLoggingLevel) { Assert.notNull(minLoggingLevel, "the minimum log level cannot be empty"); logger.debug("Setting minimum logging level: {}, session ID: {}", minLoggingLevel, this.sessionId); this.minLoggingLevel = minLoggingLevel; } private boolean isNotificationForLevelAllowed(LoggingLevel loggingLevel) { return loggingLevel.level() >= this.minLoggingLevel.level(); } public CompletableFuture progressNotification(McpSchema.ProgressNotification progressNotification) { if (progressNotification == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("progress notifications cannot be empty")); return future; } return this.session .sendNotification(McpSchema.METHOD_NOTIFICATION_PROGRESS, progressNotification) .whenComplete((result, error) -> { if (error != null) { logger.error("Failed to send progress notification, session ID: {}, error: {}", this.sessionId, error.getMessage()); } else { logger.debug("Progress notification sent successfully, session ID: {}", this.sessionId); } }); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpNotificationHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import java.util.concurrent.CompletableFuture; /** * Handles MCP notifications from clients using CompletableFuture for async operations. * This is the Netty-specific version that doesn't depend on Reactor. */ public interface McpNotificationHandler { /** * Handles a notification from the client. * @param exchange the exchange associated with the client that allows calling back to * the connected client or inspecting its capabilities. * @param params the parameters of the notification. * @return a CompletableFuture that completes once the notification is handled. */ CompletableFuture handle(McpNettyServerExchange exchange, ArthasCommandContext arthasCommandContext, Object params); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpRequestHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import java.util.concurrent.CompletableFuture; /** * Handles MCP requests from clients using CompletableFuture for async operations. * This is the Netty-specific version that doesn't depend on Reactor. */ public interface McpRequestHandler { /** * Handles a request from the client. * @param exchange the exchange associated with the client that allows calling back to * the connected client or inspecting its capabilities. * @param params the parameters of the request. * @return a CompletableFuture that will emit the response to the request. */ CompletableFuture handle(McpNettyServerExchange exchange, ArthasCommandContext arthasCommandContext, Object params); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpServer.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.util.JsonParser; import com.taobao.arthas.mcp.server.CommandExecutor; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.protocol.spec.McpStatelessServerTransport; import com.taobao.arthas.mcp.server.protocol.spec.McpStreamableServerTransportProvider; import com.taobao.arthas.mcp.server.util.Assert; import java.time.Duration; import java.util.*; import java.util.concurrent.CompletableFuture; import java.util.function.BiFunction; /** * MCP server interface and builder for Netty-based implementation. * * @author Yeaury */ public interface McpServer { McpSchema.Implementation DEFAULT_SERVER_INFO = new McpSchema.Implementation("mcp-server", "1.0.0"); static StreamableServerNettySpecification netty(McpStreamableServerTransportProvider transportProvider) { return new StreamableServerNettySpecification(transportProvider); } static StatelessServerNettySpecification netty(McpStatelessServerTransport transport) { return new StatelessServerNettySpecification(transport); } class StreamableServerNettySpecification { ObjectMapper objectMapper; McpSchema.Implementation serverInfo = DEFAULT_SERVER_INFO; McpSchema.ServerCapabilities serverCapabilities; String instructions; CommandExecutor commandExecutor; private final McpStreamableServerTransportProvider transportProvider; final List tools = new ArrayList<>(); final Map resources = new HashMap<>(); final List resourceTemplates = new ArrayList<>(); final Map prompts = new HashMap<>(); final List, CompletableFuture>> rootsChangeHandlers = new ArrayList<>(); Duration requestTimeout = Duration.ofSeconds(10); // Default timeout public StreamableServerNettySpecification(McpStreamableServerTransportProvider transportProvider) { this.transportProvider = transportProvider; } public StreamableServerNettySpecification serverInfo(McpSchema.Implementation serverInfo) { Assert.notNull(serverInfo, "Server info must not be null"); this.serverInfo = serverInfo; return this; } public StreamableServerNettySpecification requestTimeout(Duration requestTimeout) { Assert.notNull(requestTimeout, "Request timeout must not be null"); this.requestTimeout = requestTimeout; return this; } public StreamableServerNettySpecification serverInfo(String name, String version) { Assert.hasText(name, "Name must not be null or empty"); Assert.hasText(version, "Version must not be null or empty"); this.serverInfo = new McpSchema.Implementation(name, version); return this; } public StreamableServerNettySpecification instructions(String instructions) { this.instructions = instructions; return this; } public StreamableServerNettySpecification capabilities(McpSchema.ServerCapabilities serverCapabilities) { this.serverCapabilities = serverCapabilities; return this; } public StreamableServerNettySpecification tool(McpSchema.Tool tool, McpServerFeatures.ToolCallFunction handler) { Assert.notNull(tool, "Tool must not be null"); Assert.notNull(handler, "Handler must not be null"); this.tools.add(new McpServerFeatures.ToolSpecification(tool, handler)); return this; } public StreamableServerNettySpecification tools(List toolRegistrations) { Assert.notNull(toolRegistrations, "Tool handlers list must not be null"); this.tools.addAll(toolRegistrations); return this; } public StreamableServerNettySpecification tools(McpServerFeatures.ToolSpecification... toolRegistrations) { this.tools.addAll(Arrays.asList(toolRegistrations)); return this; } public StreamableServerNettySpecification resources(Map resourceSpecifications) { Assert.notNull(resourceSpecifications, "Resource handlers map must not be null"); this.resources.putAll(resourceSpecifications); return this; } public StreamableServerNettySpecification resources(List resourceSpecifications) { Assert.notNull(resourceSpecifications, "Resource handlers list must not be null"); for (McpServerFeatures.ResourceSpecification resource : resourceSpecifications) { this.resources.put(resource.getResource().getUri(), resource); } return this; } public StreamableServerNettySpecification resources(McpServerFeatures.ResourceSpecification... resourceSpecifications) { Assert.notNull(resourceSpecifications, "Resource handlers list must not be null"); for (McpServerFeatures.ResourceSpecification resource : resourceSpecifications) { this.resources.put(resource.getResource().getUri(), resource); } return this; } public StreamableServerNettySpecification resourceTemplates(List resourceTemplates) { Assert.notNull(resourceTemplates, "Resource templates must not be null"); this.resourceTemplates.addAll(resourceTemplates); return this; } public StreamableServerNettySpecification resourceTemplates(McpSchema.ResourceTemplate... resourceTemplates) { Assert.notNull(resourceTemplates, "Resource templates must not be null"); this.resourceTemplates.addAll(Arrays.asList(resourceTemplates)); return this; } public StreamableServerNettySpecification prompts(Map prompts) { Assert.notNull(prompts, "Prompts map must not be null"); this.prompts.putAll(prompts); return this; } public StreamableServerNettySpecification prompts(List prompts) { Assert.notNull(prompts, "Prompts map must not be null"); for (McpServerFeatures.PromptSpecification prompt : prompts) { this.prompts.put(prompt.getPrompt().getName(), prompt); } return this; } public StreamableServerNettySpecification prompts(McpServerFeatures.PromptSpecification... prompts) { Assert.notNull(prompts, "Prompts map must not be null"); for (McpServerFeatures.PromptSpecification prompt : prompts) { this.prompts.put(prompt.getPrompt().getName(), prompt); } return this; } public StreamableServerNettySpecification rootsChangeHandler( BiFunction, CompletableFuture> handler) { Assert.notNull(handler, "Consumer must not be null"); this.rootsChangeHandlers.add(handler); return this; } public StreamableServerNettySpecification rootsChangeHandlers( List, CompletableFuture>> handlers) { Assert.notNull(handlers, "Handlers list must not be null"); this.rootsChangeHandlers.addAll(handlers); return this; } public StreamableServerNettySpecification rootsChangeHandlers( @SuppressWarnings("unchecked") BiFunction, CompletableFuture>... handlers) { Assert.notNull(handlers, "Handlers list must not be null"); return this.rootsChangeHandlers(Arrays.asList(handlers)); } public StreamableServerNettySpecification objectMapper(ObjectMapper objectMapper) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); this.objectMapper = objectMapper; return this; } public StreamableServerNettySpecification commandExecutor(CommandExecutor commandExecutor) { Assert.notNull(commandExecutor, "CommandExecutor must not be null"); this.commandExecutor = commandExecutor; return this; } public McpNettyServer build() { ObjectMapper mapper = this.objectMapper != null ? this.objectMapper : JsonParser.getObjectMapper(); Assert.notNull(this.commandExecutor, "CommandExecutor must be set before building"); return new McpNettyServer( this.transportProvider, mapper, this.requestTimeout, new McpServerFeatures.McpServerConfig(this.serverInfo, this.serverCapabilities, this.tools, this.resources, this.resourceTemplates, this.prompts, this.rootsChangeHandlers, this.instructions ), this.commandExecutor ); } } class StatelessServerNettySpecification { private final McpStatelessServerTransport transport; ObjectMapper objectMapper; McpSchema.Implementation serverInfo = DEFAULT_SERVER_INFO; McpSchema.ServerCapabilities serverCapabilities; String instructions; CommandExecutor commandExecutor; final List tools = new ArrayList<>(); final Map resources = new HashMap<>(); final List resourceTemplates = new ArrayList<>(); final Map prompts = new HashMap<>(); final List, CompletableFuture>> rootsChangeHandlers = new ArrayList<>(); Duration requestTimeout = Duration.ofSeconds(10); // Default timeout StatelessServerNettySpecification(McpStatelessServerTransport transport) { this.transport = transport; } public StatelessServerNettySpecification serverInfo(McpSchema.Implementation serverInfo) { Assert.notNull(serverInfo, "Server info must not be null"); this.serverInfo = serverInfo; return this; } public StatelessServerNettySpecification requestTimeout(Duration requestTimeout) { Assert.notNull(requestTimeout, "Request timeout must not be null"); this.requestTimeout = requestTimeout; return this; } public StatelessServerNettySpecification serverInfo(String name, String version) { Assert.hasText(name, "Name must not be null or empty"); Assert.hasText(version, "Version must not be null or empty"); this.serverInfo = new McpSchema.Implementation(name, version); return this; } public StatelessServerNettySpecification instructions(String instructions) { this.instructions = instructions; return this; } public StatelessServerNettySpecification capabilities(McpSchema.ServerCapabilities serverCapabilities) { this.serverCapabilities = serverCapabilities; return this; } public StatelessServerNettySpecification tools(List toolRegistrations) { Assert.notNull(toolRegistrations, "Tool handlers list must not be null"); this.tools.addAll(toolRegistrations); return this; } public StatelessServerNettySpecification tools(McpStatelessServerFeatures.ToolSpecification... toolRegistrations) { for (McpStatelessServerFeatures.ToolSpecification tool : toolRegistrations) { this.tools.add(tool); } return this; } public StatelessServerNettySpecification resources(Map resourceSpecifications) { Assert.notNull(resourceSpecifications, "Resource handlers map must not be null"); this.resources.putAll(resourceSpecifications); return this; } public StatelessServerNettySpecification resources(List resourceSpecifications) { Assert.notNull(resourceSpecifications, "Resource handlers list must not be null"); for (McpStatelessServerFeatures.ResourceSpecification resource : resourceSpecifications) { this.resources.put(resource.getResource().getUri(), resource); } return this; } public StatelessServerNettySpecification resources(McpStatelessServerFeatures.ResourceSpecification... resourceSpecifications) { Assert.notNull(resourceSpecifications, "Resource handlers list must not be null"); for (McpStatelessServerFeatures.ResourceSpecification resource : resourceSpecifications) { this.resources.put(resource.getResource().getUri(), resource); } return this; } public StatelessServerNettySpecification resourceTemplates(List resourceTemplates) { Assert.notNull(resourceTemplates, "Resource templates must not be null"); this.resourceTemplates.addAll(resourceTemplates); return this; } public StatelessServerNettySpecification resourceTemplates(McpSchema.ResourceTemplate... resourceTemplates) { Assert.notNull(resourceTemplates, "Resource templates must not be null"); this.resourceTemplates.addAll(Arrays.asList(resourceTemplates)); return this; } public StatelessServerNettySpecification prompts(Map prompts) { Assert.notNull(prompts, "Prompts map must not be null"); this.prompts.putAll(prompts); return this; } public StatelessServerNettySpecification prompts(List prompts) { Assert.notNull(prompts, "Prompts map must not be null"); for (McpStatelessServerFeatures.PromptSpecification prompt : prompts) { this.prompts.put(prompt.getPrompt().getName(), prompt); } return this; } public StatelessServerNettySpecification prompts(McpStatelessServerFeatures.PromptSpecification... prompts) { Assert.notNull(prompts, "Prompts map must not be null"); for (McpStatelessServerFeatures.PromptSpecification prompt : prompts) { this.prompts.put(prompt.getPrompt().getName(), prompt); } return this; } public StatelessServerNettySpecification rootsChangeHandler( BiFunction, CompletableFuture> handler) { Assert.notNull(handler, "Consumer must not be null"); this.rootsChangeHandlers.add(handler); return this; } public StatelessServerNettySpecification rootsChangeHandlers( List, CompletableFuture>> handlers) { Assert.notNull(handlers, "Handlers list must not be null"); this.rootsChangeHandlers.addAll(handlers); return this; } public StatelessServerNettySpecification rootsChangeHandlers( @SuppressWarnings("unchecked") BiFunction, CompletableFuture>... handlers) { Assert.notNull(handlers, "Handlers list must not be null"); return this.rootsChangeHandlers(Arrays.asList(handlers)); } public StatelessServerNettySpecification objectMapper(ObjectMapper objectMapper) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); this.objectMapper = objectMapper; return this; } public StatelessServerNettySpecification commandExecutor(CommandExecutor commandExecutor) { Assert.notNull(commandExecutor, "CommandExecutor must not be null"); this.commandExecutor = commandExecutor; return this; } public McpStatelessNettyServer build() { ObjectMapper mapper = this.objectMapper != null ? this.objectMapper : JsonParser.getObjectMapper(); return new McpStatelessNettyServer( this.transport, mapper, this.requestTimeout, new McpStatelessServerFeatures.McpServerConfig( this.serverInfo, this.serverCapabilities, this.tools, this.resources, this.resourceTemplates, this.prompts, this.instructions ), this.commandExecutor ); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpServerFeatures.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import com.taobao.arthas.mcp.server.util.Assert; import com.taobao.arthas.mcp.server.util.Utils; import java.util.*; import java.util.concurrent.CompletableFuture; import java.util.function.BiFunction; /** * MCP server function specification, the server can choose the supported features. * This implementation only provides an asynchronous API. * * @author Yeaury */ public class McpServerFeatures { public static class McpServerConfig { private final McpSchema.Implementation serverInfo; private final McpSchema.ServerCapabilities serverCapabilities; private final List tools; private final Map resources; private final List resourceTemplates; private final Map prompts; private final List, CompletableFuture>> rootsChangeConsumers; private final String instructions; public McpServerConfig( McpSchema.Implementation serverInfo, McpSchema.ServerCapabilities serverCapabilities, List tools, Map resources, List resourceTemplates, Map prompts, List, CompletableFuture>> rootsChangeConsumers, String instructions) { Assert.notNull(serverInfo, "The server information cannot be empty"); // If serverCapabilities is empty, the appropriate capability configuration // is automatically built based on the provided capabilities if (serverCapabilities == null) { serverCapabilities = new McpSchema.ServerCapabilities( null, // experimental new McpSchema.ServerCapabilities.LoggingCapabilities(), !Utils.isEmpty(prompts) ? new McpSchema.ServerCapabilities.PromptCapabilities(false) : null, !Utils.isEmpty(resources) ? new McpSchema.ServerCapabilities.ResourceCapabilities(false, false) : null, !Utils.isEmpty(tools) ? new McpSchema.ServerCapabilities.ToolCapabilities(false) : null); } this.tools = (tools != null) ? tools : Collections.emptyList(); this.resources = (resources != null) ? resources : Collections.emptyMap(); this.resourceTemplates = (resourceTemplates != null) ? resourceTemplates : Collections.emptyList(); this.prompts = (prompts != null) ? prompts : Collections.emptyMap(); this.rootsChangeConsumers = (rootsChangeConsumers != null) ? rootsChangeConsumers : Collections.emptyList(); this.serverInfo = serverInfo; this.serverCapabilities = serverCapabilities; this.instructions = instructions; } public McpSchema.Implementation getServerInfo() { return serverInfo; } public McpSchema.ServerCapabilities getServerCapabilities() { return serverCapabilities; } public List getTools() { return tools; } public Map getResources() { return resources; } public List getResourceTemplates() { return resourceTemplates; } public Map getPrompts() { return prompts; } public List, CompletableFuture>> getRootsChangeConsumers() { return rootsChangeConsumers; } public String getInstructions() { return instructions; } public static Builder builder() { return new Builder(); } public static class Builder { private McpSchema.Implementation serverInfo; private McpSchema.ServerCapabilities serverCapabilities; private final List tools = new ArrayList<>(); private final Map resources = new HashMap<>(); private final List resourceTemplates = new ArrayList<>(); private final Map prompts = new HashMap<>(); private final List, CompletableFuture>> rootsChangeConsumers = new ArrayList<>(); private String instructions; public Builder serverInfo(McpSchema.Implementation serverInfo) { this.serverInfo = serverInfo; return this; } public Builder serverCapabilities(McpSchema.ServerCapabilities serverCapabilities) { this.serverCapabilities = serverCapabilities; return this; } public Builder addTool(ToolSpecification tool) { this.tools.add(tool); return this; } public Builder addResource(String key, ResourceSpecification resource) { this.resources.put(key, resource); return this; } public Builder addResourceTemplate(McpSchema.ResourceTemplate template) { this.resourceTemplates.add(template); return this; } public Builder addPrompt(String key, PromptSpecification prompt) { this.prompts.put(key, prompt); return this; } public Builder addRootsChangeConsumer( BiFunction, CompletableFuture> consumer) { this.rootsChangeConsumers.add(consumer); return this; } public Builder instructions(String instructions) { this.instructions = instructions; return this; } public McpServerConfig build() { return new McpServerConfig(serverInfo, serverCapabilities, tools, resources, resourceTemplates, prompts, rootsChangeConsumers, instructions); } } } public static class ToolSpecification { private final McpSchema.Tool tool; private final ToolCallFunction call; public ToolSpecification( McpSchema.Tool tool, ToolCallFunction call) { this.tool = tool; this.call = call; } public McpSchema.Tool getTool() { return tool; } public ToolCallFunction getCall() { return call; } } /** * Tool call function interface with three parameters */ @FunctionalInterface public interface ToolCallFunction { CompletableFuture apply( McpNettyServerExchange exchange, ArthasCommandContext commandContext, McpSchema.CallToolRequest arguments ); } public static class ResourceSpecification { private final McpSchema.Resource resource; private final BiFunction> readHandler; public ResourceSpecification( McpSchema.Resource resource, BiFunction> readHandler) { this.resource = resource; this.readHandler = readHandler; } public McpSchema.Resource getResource() { return resource; } public BiFunction> getReadHandler() { return readHandler; } } public static class PromptSpecification { private final McpSchema.Prompt prompt; private final BiFunction> promptHandler; public PromptSpecification( McpSchema.Prompt prompt, BiFunction> promptHandler) { this.prompt = prompt; this.promptHandler = promptHandler; } public McpSchema.Prompt getPrompt() { return prompt; } public BiFunction> getPromptHandler() { return promptHandler; } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpStatelessNettyServer.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.CommandExecutor; import com.taobao.arthas.mcp.server.protocol.spec.McpError; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.protocol.spec.McpStatelessServerTransport; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.time.Duration; import java.util.*; import java.util.concurrent.CompletableFuture; import java.util.concurrent.CompletionException; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.CopyOnWriteArrayList; import java.util.function.BiFunction; /** * A Netty-based MCP server implementation that provides access to tools, resources, and prompts. * * @author Yeaury */ public class McpStatelessNettyServer { private static final Logger logger = LoggerFactory.getLogger(McpStatelessNettyServer.class); private final McpStatelessServerTransport mcpTransportProvider; private final ObjectMapper objectMapper; private final McpSchema.ServerCapabilities serverCapabilities; private final McpSchema.Implementation serverInfo; private final String instructions; private final CopyOnWriteArrayList tools = new CopyOnWriteArrayList<>(); private final CopyOnWriteArrayList resourceTemplates = new CopyOnWriteArrayList<>(); private final ConcurrentHashMap resources = new ConcurrentHashMap<>(); private final ConcurrentHashMap prompts = new ConcurrentHashMap<>(); private List protocolVersions; public McpStatelessNettyServer( McpStatelessServerTransport mcpTransport, ObjectMapper objectMapper, Duration requestTimeout, McpStatelessServerFeatures.McpServerConfig features, CommandExecutor commandExecutor) { this.mcpTransportProvider = mcpTransport; this.objectMapper = objectMapper; this.serverInfo = features.getServerInfo(); this.serverCapabilities = features.getServerCapabilities(); this.instructions = features.getInstructions(); this.tools.addAll(features.getTools()); this.resources.putAll(features.getResources()); this.resourceTemplates.addAll(features.getResourceTemplates()); this.prompts.putAll(features.getPrompts()); this.protocolVersions = new ArrayList<>(mcpTransport.protocolVersions()); Map> requestHandlers = new HashMap<>(); // Initialize request handlers for standard MCP methods requestHandlers.put(McpSchema.METHOD_INITIALIZE, initializeRequestHandler()); // Ping MUST respond with an empty data, but not NULL response. requestHandlers.put(McpSchema.METHOD_PING, (exchange, commandContext, params) -> CompletableFuture.completedFuture(Collections.emptyMap())); // Add tools API handlers if the tool capability is enabled if (this.serverCapabilities.getTools() != null) { requestHandlers.put(McpSchema.METHOD_TOOLS_LIST, toolsListRequestHandler()); requestHandlers.put(McpSchema.METHOD_TOOLS_CALL, toolsCallRequestHandler()); } // Add resources API handlers if provided if (this.serverCapabilities.getResources() != null) { requestHandlers.put(McpSchema.METHOD_RESOURCES_LIST, resourcesListRequestHandler()); requestHandlers.put(McpSchema.METHOD_RESOURCES_READ, resourcesReadRequestHandler()); requestHandlers.put(McpSchema.METHOD_RESOURCES_TEMPLATES_LIST, resourceTemplateListRequestHandler()); } // Add prompts API handlers if provider exists if (this.serverCapabilities.getPrompts() != null) { requestHandlers.put(McpSchema.METHOD_PROMPT_LIST, promptsListRequestHandler()); requestHandlers.put(McpSchema.METHOD_PROMPT_GET, promptsGetRequestHandler()); } Map notificationHandlers = new HashMap<>(); notificationHandlers.put(McpSchema.METHOD_NOTIFICATION_INITIALIZED, (ctx, params) -> CompletableFuture.completedFuture(null)); McpStatelessServerHandler handler = new DefaultMcpStatelessServerHandler(requestHandlers, notificationHandlers, commandExecutor); mcpTransport.setMcpHandler(handler); } // --------------------------------------- // Lifecycle Management // --------------------------------------- private McpStatelessRequestHandler initializeRequestHandler() { return (exchange, commandContext, params) -> CompletableFuture.supplyAsync(() -> { McpSchema.InitializeRequest initializeRequest = objectMapper.convertValue(params, McpSchema.InitializeRequest.class); logger.info("Client initialize request - Protocol: {}, Capabilities: {}, Info: {}", initializeRequest.getProtocolVersion(), initializeRequest.getCapabilities(), initializeRequest.getClientInfo()); // The server MUST respond with the highest protocol version it supports // if // it does not support the requested (e.g. Client) version. String serverProtocolVersion = protocolVersions.get(protocolVersions.size() - 1); if (protocolVersions.contains(initializeRequest.getProtocolVersion())) { serverProtocolVersion = initializeRequest.getProtocolVersion(); } else { logger.warn( "Client requested unsupported protocol version: {}, " + "so the server will suggest {} instead", initializeRequest.getProtocolVersion(), serverProtocolVersion); } return new McpSchema.InitializeResult(serverProtocolVersion, serverCapabilities, serverInfo, instructions); }); } public McpSchema.ServerCapabilities getServerCapabilities() { return this.serverCapabilities; } public McpSchema.Implementation getServerInfo() { return this.serverInfo; } public CompletableFuture closeGracefully() { return this.mcpTransportProvider.closeGracefully(); } public void close() { this.mcpTransportProvider.close(); } private McpNotificationHandler rootsListChangedNotificationHandler( List, CompletableFuture>> rootsChangeConsumers) { return (exchange, commandContext, params) -> { CompletableFuture futureRoots = exchange.listRoots(); return futureRoots.thenCompose(listRootsResult -> { List roots = listRootsResult.getRoots(); List> futures = new ArrayList<>(); for (BiFunction, CompletableFuture> consumer : rootsChangeConsumers) { CompletableFuture future = consumer.apply(exchange, roots).exceptionally(error -> { logger.error("Error handling roots list change notification", error); return null; }); futures.add(future); } return CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])); }); }; } // --------------------------------------- // Tool Management // --------------------------------------- public CompletableFuture addTool(McpStatelessServerFeatures.ToolSpecification toolSpecification) { if (toolSpecification == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool specification must not be null")); return future; } if (toolSpecification.getTool() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool must not be null")); return future; } if (toolSpecification.getCall() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool call handler must not be null")); return future; } if (this.serverCapabilities.getTools() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with tool capabilities")); return future; } return CompletableFuture .runAsync(() -> { if (this.tools.stream().anyMatch(th -> th.getTool().getName().equals(toolSpecification.getTool().getName()))) { throw new CompletionException( new McpError("Tool with name '" + toolSpecification.getTool().getName() + "' already exists")); } this.tools.add(toolSpecification); logger.debug("Added tool handler: {}", toolSpecification.getTool().getName()); }) .exceptionally(ex -> { Throwable cause = ex instanceof CompletionException ? ex.getCause() : ex; logger.error("Error while adding tool", cause); throw new CompletionException(cause); }); } public CompletableFuture removeTool(String toolName) { if (toolName == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Tool name must not be null")); return future; } if (this.serverCapabilities.getTools() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with tool capabilities")); return future; } return CompletableFuture .runAsync(() -> { boolean removed = this.tools.removeIf( spec -> spec.getTool().getName().equals(toolName)); if (!removed) { throw new CompletionException( new McpError("Tool with name '" + toolName + "' not found")); } logger.debug("Removed tool handler: {}", toolName); }) .exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; logger.error("Error while removing tool '{}'", toolName, cause); throw new CompletionException(cause); }); } private McpStatelessRequestHandler toolsListRequestHandler() { return (exchange, commandContext, params) -> { List tools = new ArrayList<>(); for (McpStatelessServerFeatures.ToolSpecification toolSpec : this.tools) { tools.add(toolSpec.getTool()); } return CompletableFuture.completedFuture(new McpSchema.ListToolsResult(tools, null)); }; } private McpStatelessRequestHandler toolsCallRequestHandler() { return (context, commandContext, params) -> { McpSchema.CallToolRequest callToolRequest = objectMapper.convertValue(params, new TypeReference() { }); Optional toolSpecification = this.tools.stream() .filter(tr -> callToolRequest.getName().equals(tr.getTool().getName())) .findAny(); if (!toolSpecification.isPresent()) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("no tool found: " + callToolRequest.getName())); return future; } return toolSpecification.get().getCall().apply(context, commandContext, callToolRequest.getArguments()); }; } // --------------------------------------- // Resource Management // --------------------------------------- public CompletableFuture addResource(McpStatelessServerFeatures.ResourceSpecification resourceSpecification) { if (resourceSpecification == null || resourceSpecification.getResource() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Resource must not be null")); return future; } if (this.serverCapabilities.getResources() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with resource capabilities")); return future; } return CompletableFuture .runAsync(() -> { String uri = resourceSpecification.getResource().getUri(); if (this.resources.putIfAbsent(uri, resourceSpecification) != null) { throw new CompletionException(new McpError("Resource with URI '" + uri + "' already exists")); } logger.debug("Added resource handler: {}", uri); }) .exceptionally(ex -> { Throwable cause = ex instanceof CompletionException ? ex.getCause() : ex; logger.error("Error while adding resource '{}'", resourceSpecification.getResource().getUri(), cause); throw new CompletionException(cause); }); } public CompletableFuture removeResource(String resourceUri) { if (resourceUri == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Resource URI must not be null")); return future; } if (this.serverCapabilities.getResources() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with resource capabilities")); return future; } return CompletableFuture .runAsync(() -> { McpStatelessServerFeatures.ResourceSpecification removed = this.resources.remove(resourceUri); if (removed == null) { throw new CompletionException(new McpError("Resource with URI '" + resourceUri + "' not found")); } logger.debug("Removed resource handler: {}", resourceUri); }) .exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; logger.error("Error while removing resource '{}'", resourceUri, cause); throw new CompletionException(cause); }); } private McpStatelessRequestHandler resourcesListRequestHandler() { return (exchange, commandContext, params) -> { List resourceList = new ArrayList<>(); for (McpStatelessServerFeatures.ResourceSpecification spec : this.resources.values()) { resourceList.add(spec.getResource()); } return CompletableFuture.completedFuture(new McpSchema.ListResourcesResult(resourceList, null)); }; } private McpStatelessRequestHandler resourceTemplateListRequestHandler() { return (context, commandContext, params) -> CompletableFuture .completedFuture(new McpSchema.ListResourceTemplatesResult(this.resourceTemplates, null)); } private McpStatelessRequestHandler resourcesReadRequestHandler() { return (context, commandContext, params) -> { McpSchema.ReadResourceRequest resourceRequest = objectMapper.convertValue(params, new TypeReference() { }); String resourceUri = resourceRequest.getUri(); McpStatelessServerFeatures.ResourceSpecification specification = this.resources.get(resourceUri); if (specification != null) { return specification.getReadHandler().apply(context, resourceRequest); } CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Resource not found: " + resourceUri)); return future; }; } // --------------------------------------- // Prompt Management // --------------------------------------- public CompletableFuture addPrompt(McpStatelessServerFeatures.PromptSpecification promptSpecification) { if (promptSpecification == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Prompt specification must not be null")); return future; } if (this.serverCapabilities.getPrompts() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with prompt capabilities")); return future; } return CompletableFuture .runAsync(() -> { String name = promptSpecification.getPrompt().getName(); McpStatelessServerFeatures.PromptSpecification existing = this.prompts.putIfAbsent(name, promptSpecification); if (existing != null) { throw new CompletionException(new McpError("Prompt with name '" + name + "' already exists")); } logger.debug("Added prompt handler: {}", name); }) .exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; String name = promptSpecification.getPrompt().getName(); logger.error("Error while adding prompt '{}'", name, cause); throw new CompletionException(cause); }); } public CompletableFuture removePrompt(String promptName) { if (promptName == null || promptName.isEmpty()) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Prompt name must not be null or empty")); return future; } if (this.serverCapabilities.getPrompts() == null) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Server must be configured with prompt capabilities")); return future; } return CompletableFuture .runAsync(() -> { McpStatelessServerFeatures.PromptSpecification removed = this.prompts.remove(promptName); if (removed == null) { throw new CompletionException(new McpError("Prompt with name '" + promptName + "' not found")); } logger.debug("Removed prompt handler: {}", promptName); }) .exceptionally(ex -> { Throwable cause = (ex instanceof CompletionException) ? ex.getCause() : ex; logger.error("Error while removing prompt '{}'", promptName, cause); throw new CompletionException(cause); }); } private McpStatelessRequestHandler promptsListRequestHandler() { return (exchange, commandContext, params) -> { List promptList = new ArrayList<>(); for (McpStatelessServerFeatures.PromptSpecification promptSpec : this.prompts.values()) { promptList.add(promptSpec.getPrompt()); } return CompletableFuture.completedFuture(new McpSchema.ListPromptsResult(promptList, null)); }; } private McpStatelessRequestHandler promptsGetRequestHandler() { return (context, commandContext, params) -> { McpSchema.GetPromptRequest promptRequest = objectMapper.convertValue(params, new TypeReference() { }); McpStatelessServerFeatures.PromptSpecification specification = this.prompts.get(promptRequest.getName()); if (specification != null) { return specification.getPromptHandler().apply(context, promptRequest); } CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally(new McpError("Prompt not found: " + promptRequest.getName())); return future; }; } // --------------------------------------- // Sampling // --------------------------------------- public void setProtocolVersions(List protocolVersions) { this.protocolVersions = protocolVersions; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpStatelessNotificationHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import java.util.concurrent.CompletableFuture; /** * Handler for MCP notifications in a stateless server. */ public interface McpStatelessNotificationHandler { /** * Handle to notification and complete once done. * @param transportContext {@link McpTransportContext} associated with the transport * @param params the payload of the MCP notification * @return Mono which completes once the processing is done */ CompletableFuture handle(McpTransportContext transportContext, Object params); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpStatelessRequestHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import java.util.concurrent.CompletableFuture; /** * Handler for MCP requests in a stateless server. */ public interface McpStatelessRequestHandler { /** * Handle the request and complete with a result. * @param transportContext {@link McpTransportContext} associated with the transport * @param params the payload of the MCP request * @return Mono which completes with the response object */ CompletableFuture handle(McpTransportContext transportContext, ArthasCommandContext arthasCommandContext, Object params); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpStatelessServerFeatures.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import com.taobao.arthas.mcp.server.util.Assert; import com.taobao.arthas.mcp.server.util.Utils; import java.util.*; import java.util.concurrent.CompletableFuture; import java.util.function.BiFunction; /** * MCP server function specification, the server can choose the supported features. * This implementation only provides an asynchronous API. * * @author Yeaury */ public class McpStatelessServerFeatures { public static class McpServerConfig { private final McpSchema.Implementation serverInfo; private final McpSchema.ServerCapabilities serverCapabilities; private final List tools; private final Map resources; private final List resourceTemplates; private final Map prompts; private final String instructions; public McpServerConfig( McpSchema.Implementation serverInfo, McpSchema.ServerCapabilities serverCapabilities, List tools, Map resources, List resourceTemplates, Map prompts, String instructions) { Assert.notNull(serverInfo, "The server information cannot be empty"); // If serverCapabilities is empty, the appropriate capability configuration // is automatically built based on the provided capabilities if (serverCapabilities == null) { serverCapabilities = new McpSchema.ServerCapabilities( null, // experimental new McpSchema.ServerCapabilities.LoggingCapabilities(), !Utils.isEmpty(prompts) ? new McpSchema.ServerCapabilities.PromptCapabilities(false) : null, !Utils.isEmpty(resources) ? new McpSchema.ServerCapabilities.ResourceCapabilities(false, false) : null, !Utils.isEmpty(tools) ? new McpSchema.ServerCapabilities.ToolCapabilities(false) : null); } this.tools = (tools != null) ? tools : Collections.emptyList(); this.resources = (resources != null) ? resources : Collections.emptyMap(); this.resourceTemplates = (resourceTemplates != null) ? resourceTemplates : Collections.emptyList(); this.prompts = (prompts != null) ? prompts : Collections.emptyMap(); this.serverInfo = serverInfo; this.serverCapabilities = serverCapabilities; this.instructions = instructions; } public McpSchema.Implementation getServerInfo() { return serverInfo; } public McpSchema.ServerCapabilities getServerCapabilities() { return serverCapabilities; } public List getTools() { return tools; } public Map getResources() { return resources; } public List getResourceTemplates() { return resourceTemplates; } public Map getPrompts() { return prompts; } public String getInstructions() { return instructions; } public static Builder builder() { return new Builder(); } public static class Builder { private McpSchema.Implementation serverInfo; private McpSchema.ServerCapabilities serverCapabilities; private final List tools = new ArrayList<>(); private final Map resources = new HashMap<>(); private final List resourceTemplates = new ArrayList<>(); private final Map prompts = new HashMap<>(); private String instructions; public Builder serverInfo(McpSchema.Implementation serverInfo) { this.serverInfo = serverInfo; return this; } public Builder serverCapabilities(McpSchema.ServerCapabilities serverCapabilities) { this.serverCapabilities = serverCapabilities; return this; } public Builder addTool(ToolSpecification tool) { this.tools.add(tool); return this; } public Builder addResource(String key, ResourceSpecification resource) { this.resources.put(key, resource); return this; } public Builder addResourceTemplate(McpSchema.ResourceTemplate template) { this.resourceTemplates.add(template); return this; } public Builder addPrompt(String key, PromptSpecification prompt) { this.prompts.put(key, prompt); return this; } public Builder instructions(String instructions) { this.instructions = instructions; return this; } public McpServerConfig build() { return new McpServerConfig(serverInfo, serverCapabilities, tools, resources, resourceTemplates, prompts, instructions); } } } public static class ToolSpecification { private final McpSchema.Tool tool; private final ToolCallFunction call; public ToolSpecification( McpSchema.Tool tool, ToolCallFunction call) { this.tool = tool; this.call = call; } public McpSchema.Tool getTool() { return tool; } public ToolCallFunction getCall() { return call; } } /** * Tool call function interface with three parameters */ @FunctionalInterface public interface ToolCallFunction { CompletableFuture apply( McpTransportContext context, ArthasCommandContext commandContext, Map arguments ); } public static class ResourceSpecification { private final McpSchema.Resource resource; private final BiFunction> readHandler; public ResourceSpecification( McpSchema.Resource resource, BiFunction> readHandler) { this.resource = resource; this.readHandler = readHandler; } public McpSchema.Resource getResource() { return resource; } public BiFunction> getReadHandler() { return readHandler; } } public static class PromptSpecification { private final McpSchema.Prompt prompt; private final BiFunction> promptHandler; public PromptSpecification( McpSchema.Prompt prompt, BiFunction> promptHandler) { this.prompt = prompt; this.promptHandler = promptHandler; } public McpSchema.Prompt getPrompt() { return prompt; } public BiFunction> getPromptHandler() { return promptHandler; } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpStatelessServerHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import java.util.concurrent.CompletableFuture; public interface McpStatelessServerHandler { /** * Handle the request using user-provided feature implementations. * @param transportContext {@link McpTransportContext} carrying transport layer * metadata * @param request the request JSON object * @return Mono containing the JSON response */ CompletableFuture handleRequest(McpTransportContext transportContext, McpSchema.JSONRPCRequest request); /** * Handle the notification. * @param transportContext {@link McpTransportContext} carrying transport layer * metadata * @param notification the notification JSON object * @return Mono that completes once handling is finished */ CompletableFuture handleNotification(McpTransportContext transportContext, McpSchema.JSONRPCNotification notification); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpTransportContext.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; public interface McpTransportContext { String KEY = "MCP_TRANSPORT_CONTEXT"; McpTransportContext EMPTY = new DefaultMcpTransportContext(); Object get(String key); void put(String key, Object value); McpTransportContext copy(); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/McpTransportContextExtractor.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server; /** * Interface for extracting transport context from server requests. * This allows inspection of HTTP transport level metadata during request processing. * * @param the type of server request */ @FunctionalInterface public interface McpTransportContextExtractor { /** * Extract transport context from the server request. * * @param serverRequest the server request to extract context from * @param context the base context to fill in * @return the updated context with extracted information */ McpTransportContext extract(T serverRequest, McpTransportContext context); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/handler/McpHttpRequestHandler.java ================================================ package com.taobao.arthas.mcp.server.protocol.server.handler; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.protocol.config.McpServerProperties.ServerProtocol; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContextExtractor; import com.taobao.arthas.mcp.server.protocol.spec.McpError; import com.taobao.arthas.mcp.server.util.Assert; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.channel.ChannelFutureListener; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.http.*; import io.netty.util.CharsetUtil; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.concurrent.CompletableFuture; import java.util.concurrent.atomic.AtomicBoolean; /** * MCP HTTP请求处理器，分发请求到无状态或流式处理器。 * * @author Yeaury */ public class McpHttpRequestHandler { private static final Logger logger = LoggerFactory.getLogger(McpHttpRequestHandler.class); public static final String APPLICATION_JSON = "application/json"; public static final String TEXT_EVENT_STREAM = "text/event-stream"; private static final String ACCEPT_HEADER = "Accept"; private final String mcpEndpoint; private final ObjectMapper objectMapper; private final McpTransportContextExtractor contextExtractor; private final AtomicBoolean isClosing = new AtomicBoolean(false); private McpStatelessHttpRequestHandler statelessHandler; private McpStreamableHttpRequestHandler streamableHandler; private ServerProtocol protocol; public McpHttpRequestHandler(String mcpEndpoint, ObjectMapper objectMapper, McpTransportContextExtractor contextExtractor) { Assert.notNull(mcpEndpoint, "mcpEndpoint must not be null"); Assert.notNull(objectMapper, "objectMapper must not be null"); Assert.notNull(contextExtractor, "contextExtractor must not be null"); this.mcpEndpoint = mcpEndpoint; this.objectMapper = objectMapper; this.contextExtractor = contextExtractor; } public void setProtocol(ServerProtocol protocol) { this.protocol = protocol; } public void setStatelessHandler(McpStatelessHttpRequestHandler statelessHandler) { this.statelessHandler = statelessHandler; } public void setStreamableHandler(McpStreamableHttpRequestHandler streamableHandler) { this.streamableHandler = streamableHandler; } public void handle(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception { String uri = request.uri(); if (!uri.endsWith(mcpEndpoint)) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Endpoint not found")); return; } if (isClosing.get()) { sendError(ctx, HttpResponseStatus.SERVICE_UNAVAILABLE, new McpError("Server is shutting down")); return; } logger.debug("Request {} {} -> using {} transport", request.method(), request.uri(), protocol); try { if (protocol == ServerProtocol.STREAMABLE) { if (streamableHandler == null) { sendError(ctx, HttpResponseStatus.SERVICE_UNAVAILABLE, new McpError("Streamable transport handler not available")); return; } streamableHandler.handle(ctx, request); } else { if (statelessHandler == null) { sendError(ctx, HttpResponseStatus.SERVICE_UNAVAILABLE, new McpError("Stateless transport handler not available")); return; } statelessHandler.handle(ctx, request); } } catch (Exception e) { logger.error("Error handling request: {}", e.getMessage(), e); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Error processing request: " + e.getMessage())); } } public CompletableFuture closeGracefully() { return CompletableFuture.runAsync(() -> { this.isClosing.set(true); logger.debug("Initiating graceful shutdown of MCP handler"); CompletableFuture statelessClose = CompletableFuture.completedFuture(null); CompletableFuture streamableClose = CompletableFuture.completedFuture(null); if (statelessHandler != null) { statelessClose = statelessHandler.closeGracefully(); } if (streamableHandler != null) { streamableClose = streamableHandler.closeGracefully(); } CompletableFuture.allOf(statelessClose, streamableClose).join(); logger.debug("Graceful shutdown completed"); }); } private void sendError(ChannelHandlerContext ctx, HttpResponseStatus status, McpError mcpError) { try { String jsonError = objectMapper.writeValueAsString(mcpError); ByteBuf content = Unpooled.copiedBuffer(jsonError, CharsetUtil.UTF_8); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, status, content ); response.headers().set(HttpHeaderNames.CONTENT_TYPE, APPLICATION_JSON); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes()); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } catch (Exception e) { logger.error("Failed to send error response: {}", e.getMessage()); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } } public String getMcpEndpoint() { return mcpEndpoint; } public static Builder builder() { return new Builder(); } public static class Builder { private String mcpEndpoint = "/mcp"; private ObjectMapper objectMapper; private McpTransportContextExtractor contextExtractor = (request, context) -> context; private ServerProtocol protocol; public Builder mcpEndpoint(String mcpEndpoint) { Assert.notNull(mcpEndpoint, "MCP endpoint must not be null"); this.mcpEndpoint = mcpEndpoint; return this; } public Builder objectMapper(ObjectMapper objectMapper) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); this.objectMapper = objectMapper; return this; } public Builder contextExtractor(McpTransportContextExtractor contextExtractor) { Assert.notNull(contextExtractor, "Context extractor must not be null"); this.contextExtractor = contextExtractor; return this; } public Builder protocol(ServerProtocol protocol) { this.protocol = protocol; return this; } public McpHttpRequestHandler build() { Assert.notNull(this.objectMapper, "ObjectMapper must be set"); Assert.notNull(this.mcpEndpoint, "MCP endpoint must be set"); if (this.protocol == null) { this.protocol = ServerProtocol.STREAMABLE; } McpHttpRequestHandler handler = new McpHttpRequestHandler(this.mcpEndpoint, this.objectMapper, this.contextExtractor); handler.setProtocol(this.protocol); return handler; } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/handler/McpStatelessHttpRequestHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server.handler; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.util.McpAuthExtractor; import com.taobao.arthas.mcp.server.protocol.server.DefaultMcpTransportContext; import com.taobao.arthas.mcp.server.protocol.server.McpStatelessServerHandler; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContext; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContextExtractor; import com.taobao.arthas.mcp.server.protocol.spec.McpError; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.util.Assert; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.channel.ChannelFutureListener; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.http.*; import io.netty.util.CharsetUtil; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.util.concurrent.CompletableFuture; import java.util.concurrent.atomic.AtomicBoolean; /** * Server-side HTTP request handler for stateless MCP transport. * This handler processes HTTP requests without maintaining client sessions. * */ public class McpStatelessHttpRequestHandler { private static final Logger logger = LoggerFactory.getLogger(McpStatelessHttpRequestHandler.class); public static final String UTF_8 = "UTF-8"; public static final String APPLICATION_JSON = "application/json"; public static final String TEXT_EVENT_STREAM = "text/event-stream"; public static final String ACCEPT = "Accept"; private static final String FAILED_TO_SEND_ERROR_RESPONSE = "Failed to send error response: {}"; private final ObjectMapper objectMapper; private final String mcpEndpoint; private McpStatelessServerHandler mcpHandler; private final McpTransportContextExtractor contextExtractor; private final AtomicBoolean isClosing = new AtomicBoolean(false); /** * Constructs a new McpStatelessHttpRequestHandler instance. * * @param objectMapper The ObjectMapper to use for JSON serialization/deserialization * @param mcpEndpoint The endpoint URI where clients should send their JSON-RPC messages * @param contextExtractor The extractor for transport context from the request */ public McpStatelessHttpRequestHandler(ObjectMapper objectMapper, String mcpEndpoint, McpTransportContextExtractor contextExtractor) { Assert.notNull(objectMapper, "objectMapper must not be null"); Assert.notNull(mcpEndpoint, "mcpEndpoint must not be null"); Assert.notNull(contextExtractor, "contextExtractor must not be null"); this.objectMapper = objectMapper; this.mcpEndpoint = mcpEndpoint; this.contextExtractor = contextExtractor; } public void setMcpHandler(McpStatelessServerHandler mcpHandler) { this.mcpHandler = mcpHandler; } /** * Initiates a graceful shutdown of the handler. * * @return A CompletableFuture that completes when shutdown is initiated */ public CompletableFuture closeGracefully() { return CompletableFuture.supplyAsync(() -> { this.isClosing.set(true); return null; }); } protected void handle(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception { String uri = request.uri(); if (!uri.endsWith(mcpEndpoint)) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Endpoint not found")); return; } if (isClosing.get()) { sendError(ctx, HttpResponseStatus.SERVICE_UNAVAILABLE, new McpError("Server is shutting down")); return; } HttpMethod method = request.method(); if (method == HttpMethod.GET) { sendError(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED, new McpError("GET method not allowed for stateless transport")); } else if (method == HttpMethod.POST) { handlePostRequest(ctx, request); } else { sendError(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED, new McpError("Only POST method is supported")); } } /** * Handles POST requests for incoming JSON-RPC messages from clients. */ private void handlePostRequest(ChannelHandlerContext ctx, FullHttpRequest request) { McpTransportContext transportContext = this.contextExtractor.extract(request, new DefaultMcpTransportContext()); Object authSubject = McpAuthExtractor.extractAuthSubjectFromContext(ctx); transportContext.put(McpAuthExtractor.MCP_AUTH_SUBJECT_KEY, authSubject); // 从 HTTP header 中提取 User ID String userId = McpAuthExtractor.extractUserIdFromRequest(request); transportContext.put(McpAuthExtractor.MCP_USER_ID_KEY, userId); String accept = request.headers().get(ACCEPT); if (accept == null || !(accept.contains(APPLICATION_JSON) && accept.contains(TEXT_EVENT_STREAM))) { sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError("Both application/json and text/event-stream required in Accept header")); return; } try { ByteBuf content = request.content(); String body = content.toString(CharsetUtil.UTF_8); McpSchema.JSONRPCMessage message = McpSchema.deserializeJsonRpcMessage(objectMapper, body); if (message instanceof McpSchema.JSONRPCRequest) { McpSchema.JSONRPCRequest jsonrpcRequest = (McpSchema.JSONRPCRequest) message; try { this.mcpHandler.handleRequest(transportContext, jsonrpcRequest) .thenAccept(jsonrpcResponse -> { try { FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.OK, Unpooled.copiedBuffer(objectMapper.writeValueAsString(jsonrpcResponse), CharsetUtil.UTF_8) ); response.headers().set(HttpHeaderNames.CONTENT_TYPE, APPLICATION_JSON); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes()); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } catch (Exception e) { logger.error("Failed to serialize response: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to serialize response: " + e.getMessage())); } }) .exceptionally(e -> { logger.error("Failed to handle request: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to handle request: " + e.getMessage())); return null; }); } catch (Exception e) { logger.error("Failed to handle request: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to handle request: " + e.getMessage())); } } else if (message instanceof McpSchema.JSONRPCNotification) { McpSchema.JSONRPCNotification jsonrpcNotification = (McpSchema.JSONRPCNotification) message; try { this.mcpHandler.handleNotification(transportContext, jsonrpcNotification) .thenRun(() -> { FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.ACCEPTED ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); }) .exceptionally(e -> { logger.error("Failed to handle notification: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to handle notification: " + e.getMessage())); return null; }); } catch (Exception e) { logger.error("Failed to handle notification: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to handle notification: " + e.getMessage())); } } else { sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError("The server accepts either requests or notifications")); } } catch (IllegalArgumentException | IOException e) { logger.error("Failed to deserialize message: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError("Invalid message format")); } catch (Exception e) { logger.error("Unexpected error handling message: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Unexpected error: " + e.getMessage())); } } /** * Sends an error response to the client. */ private void sendError(ChannelHandlerContext ctx, HttpResponseStatus status, McpError mcpError) { try { String jsonError = objectMapper.writeValueAsString(mcpError); ByteBuf content = Unpooled.copiedBuffer(jsonError, CharsetUtil.UTF_8); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, status, content ); response.headers().set(HttpHeaderNames.CONTENT_TYPE, APPLICATION_JSON); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes()); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } catch (Exception e) { logger.error(FAILED_TO_SEND_ERROR_RESPONSE, e.getMessage()); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/handler/McpStreamableHttpRequestHandler.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server.handler; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.util.McpAuthExtractor; import com.taobao.arthas.mcp.server.protocol.server.DefaultMcpTransportContext; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContext; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContextExtractor; import com.taobao.arthas.mcp.server.protocol.spec.HttpHeaders; import com.taobao.arthas.mcp.server.protocol.spec.*; import com.taobao.arthas.mcp.server.util.Assert; import com.taobao.arthas.mcp.server.util.KeepAliveScheduler; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.channel.Channel; import io.netty.channel.ChannelFutureListener; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.http.*; import io.netty.util.CharsetUtil; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.time.Duration; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.concurrent.CompletableFuture; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.atomic.AtomicBoolean; import java.util.concurrent.locks.ReentrantLock; import static com.taobao.arthas.mcp.server.util.McpAuthExtractor.MCP_AUTH_SUBJECT_KEY; /** * Server-side implementation of the Model Context Protocol (MCP) streamable transport * layer using HTTP with Server-Sent Events (SSE) through Netty. This implementation * provides a bridge between Netty operations and the MCP transport interface. * * @see McpStreamableServerTransportProvider */ public class McpStreamableHttpRequestHandler { private static final Logger logger = LoggerFactory.getLogger(McpStreamableHttpRequestHandler.class); /** * Event type for JSON-RPC messages sent through the SSE connection. */ public static final String MESSAGE_EVENT_TYPE = "message"; /** * Header name for the response media types accepted by the requester. */ private static final String ACCEPT = "Accept"; public static final String UTF_8 = "UTF-8"; public static final String APPLICATION_JSON = "application/json"; public static final String TEXT_EVENT_STREAM = "text/event-stream"; private static final String FAILED_TO_SEND_ERROR_RESPONSE = "Failed to send error response: {}"; /** * The endpoint URI where clients should send their JSON-RPC messages. Defaults to * "/mcp". */ private final String mcpEndpoint; /** * Flag indicating whether DELETE requests are disallowed on the endpoint. */ private final boolean disallowDelete; private final ObjectMapper objectMapper; private McpStreamableServerSession.Factory sessionFactory; /** * Map of active client sessions, keyed by mcp-session-id. */ private final ConcurrentHashMap sessions = new ConcurrentHashMap<>(); private McpTransportContextExtractor contextExtractor; /** * Flag indicating if the transport is shutting down. */ private final AtomicBoolean isClosing = new AtomicBoolean(false); /** * Keep-alive scheduler for managing session pings. Activated if keepAliveInterval is * set. Disabled by default. */ private KeepAliveScheduler keepAliveScheduler; /** * Constructs a new NettyStreamableServerTransportProvider instance. * * @param objectMapper The ObjectMapper to use for JSON serialization/deserialization * of messages. * @param mcpEndpoint The endpoint URI where clients should send their JSON-RPC * messages via HTTP. * @param disallowDelete Whether to disallow DELETE requests on the endpoint. * @param contextExtractor The extractor for transport context from the request. * @param keepAliveInterval Interval for keep-alive pings (null to disable) * @throws IllegalArgumentException if any parameter is null */ public McpStreamableHttpRequestHandler(ObjectMapper objectMapper, String mcpEndpoint, boolean disallowDelete, McpTransportContextExtractor contextExtractor, Duration keepAliveInterval) { this.objectMapper = objectMapper; this.mcpEndpoint = mcpEndpoint; this.disallowDelete = disallowDelete; this.contextExtractor = contextExtractor; if (keepAliveInterval != null) { this.keepAliveScheduler = KeepAliveScheduler .builder(() -> this.isClosing.get() ? Collections.emptyList() : this.sessions.values()) .initialDelay(keepAliveInterval) .interval(keepAliveInterval) .build(); this.keepAliveScheduler.start(); logger.debug("Keep-alive scheduler started with interval: {}ms", keepAliveInterval.toMillis()); } } public void setSessionFactory(McpStreamableServerSession.Factory sessionFactory) { this.sessionFactory = sessionFactory; } public CompletableFuture notifyClients(String method, Object params) { if (this.sessions.isEmpty()) { logger.debug("No active sessions to broadcast message to"); return CompletableFuture.completedFuture(null); } logger.debug("Attempting to broadcast message to {} active sessions", this.sessions.size()); return CompletableFuture.runAsync(() -> { this.sessions.values().parallelStream().forEach(session -> { try { session.sendNotification(method, params); } catch (Exception e) { logger.error("Failed to send message to session {}: {}", session.getId(), e.getMessage()); } }); }); } public CompletableFuture closeGracefully() { return CompletableFuture.runAsync(() -> { this.isClosing.set(true); logger.debug("Initiating graceful shutdown with {} active sessions", this.sessions.size()); this.sessions.values().parallelStream().forEach(session -> { try { session.closeGracefully(); } catch (Exception e) { logger.error("Failed to close session {}: {}", session.getId(), e.getMessage()); } }); this.sessions.clear(); logger.debug("Graceful shutdown completed"); if (this.keepAliveScheduler != null) { this.keepAliveScheduler.shutdown(); } }); } protected void handle(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception { String uri = request.uri(); if (!uri.endsWith(mcpEndpoint)) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Endpoint not found")); return; } if (isClosing.get()) { sendError(ctx, HttpResponseStatus.SERVICE_UNAVAILABLE, new McpError("Server is shutting down")); return; } HttpMethod method = request.method(); if (method == HttpMethod.GET) { handleGetRequest(ctx, request); } else if (method == HttpMethod.POST) { handlePostRequest(ctx, request); } else if (method == HttpMethod.DELETE) { handleDeleteRequest(ctx, request); } else { sendError(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED, new McpError("Method not allowed")); } } /** * Handles GET requests to establish SSE connections and message replay. */ private void handleGetRequest(ChannelHandlerContext ctx, FullHttpRequest request) { // TODO support last-event-id #3118 // MCP 客户端在 SSE 断线重连时，可能会带上 last-event-id 尝试做消息回放。 // Arthas MCP Server 不支持基于 last-event-id 的恢复逻辑：直接返回 404， // 让客户端触发完整重置并重新走 Initialize 握手申请新的会话。 if (request.headers().get(HttpHeaders.LAST_EVENT_ID) != null) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Session not found, please re-initialize")); return; } List badRequestErrors = new ArrayList<>(); String accept = request.headers().get(ACCEPT); if (accept == null || !accept.contains(TEXT_EVENT_STREAM)) { badRequestErrors.add("text/event-stream required in Accept header"); } String sessionId = request.headers().get(HttpHeaders.MCP_SESSION_ID); if (sessionId == null || sessionId.trim().isEmpty()) { badRequestErrors.add("Session ID required in mcp-session-id header"); } if (!badRequestErrors.isEmpty()) { String combinedMessage = String.join("; ", badRequestErrors); sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError(combinedMessage)); return; } McpStreamableServerSession session = this.sessions.get(sessionId); if (session == null) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Session not found")); return; } logger.debug("Handling GET request for session: {}", sessionId); McpTransportContext transportContext = this.contextExtractor.extract(request, new DefaultMcpTransportContext()); Object authSubject = McpAuthExtractor.extractAuthSubjectFromContext(ctx); transportContext.put(McpAuthExtractor.MCP_AUTH_SUBJECT_KEY, authSubject); // 从 HTTP header 中提取 User ID String userId = McpAuthExtractor.extractUserIdFromRequest(request); transportContext.put(McpAuthExtractor.MCP_USER_ID_KEY, userId); try { // Set up SSE response headers HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK); response.headers().set(HttpHeaderNames.CONTENT_TYPE, TEXT_EVENT_STREAM); response.headers().set(HttpHeaderNames.CACHE_CONTROL, "no-cache"); response.headers().set(HttpHeaderNames.CONNECTION, "keep-alive"); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); response.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED); ctx.writeAndFlush(response); NettyStreamableMcpSessionTransport sessionTransport = new NettyStreamableMcpSessionTransport( sessionId, ctx); // Check if this is a replay request String lastEventId = request.headers().get(HttpHeaders.LAST_EVENT_ID); if (lastEventId != null) { try { // Replay messages from the last event ID try { session.replay(lastEventId).forEach(message -> { try { sessionTransport.sendMessage(message).join(); } catch (Exception e) { logger.error("Failed to replay message: {}", e.getMessage()); ctx.close(); } }); } catch (Exception e) { logger.error("Failed to replay messages: {}", e.getMessage()); ctx.close(); } } catch (Exception e) { logger.error("Failed to replay messages: {}", e.getMessage()); ctx.close(); } } else { // Establish new listening stream McpStreamableServerSession.McpStreamableServerSessionStream listeningStream = session .listeningStream(sessionTransport); // Handle channel closure ctx.channel().closeFuture().addListener(future -> { logger.debug("SSE connection closed for session: {}", sessionId); listeningStream.close(); }); } } catch (Exception e) { logger.error("Failed to handle GET request for session {}: {}", sessionId, e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Internal server error")); } } /** * Handles POST requests for incoming JSON-RPC messages from clients. */ private void handlePostRequest(ChannelHandlerContext ctx, FullHttpRequest request) { List badRequestErrors = new ArrayList<>(); String accept = request.headers().get(ACCEPT); if (accept == null || !accept.contains(TEXT_EVENT_STREAM)) { badRequestErrors.add("text/event-stream required in Accept header"); } if (accept == null || !accept.contains(APPLICATION_JSON)) { badRequestErrors.add("application/json required in Accept header"); } McpTransportContext transportContext = this.contextExtractor.extract(request, new DefaultMcpTransportContext()); Object authSubject = McpAuthExtractor.extractAuthSubjectFromContext(ctx); transportContext.put(MCP_AUTH_SUBJECT_KEY, authSubject); // 从 HTTP header 中提取 User ID String userId = McpAuthExtractor.extractUserIdFromRequest(request); transportContext.put(McpAuthExtractor.MCP_USER_ID_KEY, userId); try { ByteBuf content = request.content(); String body = content.toString(CharsetUtil.UTF_8); McpSchema.JSONRPCMessage message = McpSchema.deserializeJsonRpcMessage(objectMapper, body); // Handle initialization request if (message instanceof McpSchema.JSONRPCRequest) { McpSchema.JSONRPCRequest jsonrpcRequest = (McpSchema.JSONRPCRequest) message; if (jsonrpcRequest.getMethod().equals(McpSchema.METHOD_INITIALIZE)) { if (!badRequestErrors.isEmpty()) { String combinedMessage = String.join("; ", badRequestErrors); sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError(combinedMessage)); return; } McpSchema.InitializeRequest initializeRequest = objectMapper.convertValue(jsonrpcRequest.getParams(), new TypeReference() { }); McpStreamableServerSession.McpStreamableServerSessionInit init = this.sessionFactory .startSession(initializeRequest); this.sessions.put(init.session().getId(), init.session()); try { init.initResult() .thenAccept(initResult -> { try { FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.OK, Unpooled.copiedBuffer(objectMapper.writeValueAsString( new McpSchema.JSONRPCResponse( McpSchema.JSONRPC_VERSION, jsonrpcRequest.getId(), initResult, null)), CharsetUtil.UTF_8) ); response.headers().set(HttpHeaderNames.CONTENT_TYPE, APPLICATION_JSON); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes()); response.headers().set(HttpHeaders.MCP_SESSION_ID, init.session().getId()); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } catch (Exception e) { logger.error("Failed to serialize init response: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to serialize response")); } }) .exceptionally(e -> { logger.error("Failed to initialize session: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to initialize session: " + e.getMessage())); return null; }); return; } catch (Exception e) { logger.error("Failed to initialize session: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to initialize session: " + e.getMessage())); return; } } } String sessionId = request.headers().get(HttpHeaders.MCP_SESSION_ID); if (sessionId == null || sessionId.trim().isEmpty()) { badRequestErrors.add("Session ID required in mcp-session-id header"); } if (!badRequestErrors.isEmpty()) { String combinedMessage = String.join("; ", badRequestErrors); sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError(combinedMessage)); return; } McpStreamableServerSession session = this.sessions.get(sessionId); if (session == null) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Session not found: " + sessionId)); return; } if (message instanceof McpSchema.JSONRPCResponse) { McpSchema.JSONRPCResponse jsonrpcResponse = (McpSchema.JSONRPCResponse) message; session.accept(jsonrpcResponse) .thenRun(() -> { FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.ACCEPTED ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); }) .exceptionally(e -> { logger.error("Failed to accept response: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to accept response")); return null; }); } else if (message instanceof McpSchema.JSONRPCNotification) { McpSchema.JSONRPCNotification jsonrpcNotification = (McpSchema.JSONRPCNotification) message; session.accept(jsonrpcNotification, transportContext) .thenRun(() -> { FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.ACCEPTED ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); }) .exceptionally(e -> { logger.error("Failed to accept notification: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Failed to accept notification")); return null; }); } else if (message instanceof McpSchema.JSONRPCRequest) { McpSchema.JSONRPCRequest jsonrpcRequest = (McpSchema.JSONRPCRequest) message; // For streaming responses, we need to return SSE HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK); response.headers().set(HttpHeaderNames.CONTENT_TYPE, TEXT_EVENT_STREAM); response.headers().set(HttpHeaderNames.CACHE_CONTROL, "no-cache"); response.headers().set(HttpHeaderNames.CONNECTION, "keep-alive"); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); response.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED); ctx.writeAndFlush(response); NettyStreamableMcpSessionTransport sessionTransport = new NettyStreamableMcpSessionTransport( sessionId, ctx); try { session.responseStream(jsonrpcRequest, sessionTransport, transportContext) .whenComplete((result, e) -> { if (e != null) { logger.error("Failed to handle request stream: {}", e.getMessage()); sessionTransport.close(); } }); } catch (Exception e) { logger.error("Failed to handle request stream: {}", e.getMessage()); sessionTransport.close(); } } else { sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Unknown message type")); } } catch (IllegalArgumentException | IOException e) { logger.error("Failed to deserialize message: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError("Invalid message format: " + e.getMessage())); } catch (Exception e) { logger.error("Error handling message: {}", e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Error processing message: " + e.getMessage())); } } /** * Handles DELETE requests for session deletion. */ private void handleDeleteRequest(ChannelHandlerContext ctx, FullHttpRequest request) { if (this.disallowDelete) { sendError(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED, new McpError("DELETE method not allowed")); return; } McpTransportContext transportContext = this.contextExtractor.extract(request, new DefaultMcpTransportContext()); String sessionId = request.headers().get(HttpHeaders.MCP_SESSION_ID); if (sessionId == null) { sendError(ctx, HttpResponseStatus.BAD_REQUEST, new McpError("Session ID required in mcp-session-id header")); return; } McpStreamableServerSession session = this.sessions.get(sessionId); if (session == null) { sendError(ctx, HttpResponseStatus.NOT_FOUND, new McpError("Session not found")); return; } try { session.delete() .thenRun(() -> { this.sessions.remove(sessionId); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.OK ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); ctx.writeAndFlush(response); }) .exceptionally(e -> { logger.error("Failed to delete session {}: {}", sessionId, e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError(e.getMessage())); return null; }); } catch (Exception e) { logger.error("Failed to delete session {}: {}", sessionId, e.getMessage()); sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR, new McpError("Error deleting session")); } } /** * Sends an error response to the client. */ private void sendError(ChannelHandlerContext ctx, HttpResponseStatus status, McpError mcpError) { try { String jsonError = objectMapper.writeValueAsString(mcpError); ByteBuf content = Unpooled.copiedBuffer(jsonError, CharsetUtil.UTF_8); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, status, content ); response.headers().set(HttpHeaderNames.CONTENT_TYPE, APPLICATION_JSON); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes()); response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*"); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } catch (Exception e) { logger.error(FAILED_TO_SEND_ERROR_RESPONSE, e.getMessage()); FullHttpResponse response = new DefaultFullHttpResponse( HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR ); response.headers().set(HttpHeaderNames.CONTENT_LENGTH, 0); ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE); } } // Implementation of McpStreamableServerTransport for Netty SSE sessions private class NettyStreamableMcpSessionTransport implements McpStreamableServerTransport { private final String sessionId; private final ChannelHandlerContext ctx; private final AtomicBoolean closed = new AtomicBoolean(false); private final ReentrantLock lock = new ReentrantLock(); NettyStreamableMcpSessionTransport(String sessionId, ChannelHandlerContext ctx) { this.sessionId = sessionId; this.ctx = ctx; logger.debug("Streamable session transport {} initialized", sessionId); } @Override public CompletableFuture sendMessage(McpSchema.JSONRPCMessage message) { return sendMessage(message, null); } @Override public CompletableFuture sendMessage(McpSchema.JSONRPCMessage message, String messageId) { return CompletableFuture.runAsync(() -> { if (this.closed.get()) { logger.warn("Attempted to send message to closed session: {}", this.sessionId); return; } // Check if channel is still active if (!this.ctx.channel().isActive()) { logger.warn("Channel for session {} is not active, message will not be sent", this.sessionId); return; } lock.lock(); try { if (this.closed.get()) { logger.debug("Session {} was closed during message send attempt", this.sessionId); return; } String jsonText = objectMapper.writeValueAsString(message); logger.debug("Sending SSE message to session {}: {}", this.sessionId, jsonText.length() > 200 ? jsonText.substring(0, 200) + "..." : jsonText); sendSseEvent(MESSAGE_EVENT_TYPE, jsonText, messageId != null ? messageId : this.sessionId); logger.debug("Message sent to session {} with ID {}", this.sessionId, messageId); } catch (Exception e) { logger.error("Failed to send message to session {}: {}", this.sessionId, e.getMessage()); this.ctx.close(); } finally { lock.unlock(); } }); } @Override public T unmarshalFrom(Object data, TypeReference typeRef) { return objectMapper.convertValue(data, typeRef); } @Override public CompletableFuture closeGracefully() { return CompletableFuture.runAsync(this::close); } @Override public void close() { lock.lock(); try { if (this.closed.get()) { logger.debug("Session transport {} already closed", this.sessionId); return; } this.closed.set(true); if (ctx.channel().isActive()) { ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT) .addListener(ChannelFutureListener.CLOSE); } logger.debug("Successfully closed session transport {}", sessionId); } catch (Exception e) { logger.warn("Failed to close session transport {}: {}", sessionId, e.getMessage()); } finally { lock.unlock(); } } @Override public Channel getChannel() { return ctx.channel(); } private void sendSseEvent(String eventType, String data, String id) { StringBuilder sseData = new StringBuilder(); if (id != null) { sseData.append("id: ").append(id).append("\n"); } sseData.append("event: ").append(eventType).append("\n"); sseData.append("data: ").append(data).append("\n\n"); ByteBuf buffer = Unpooled.copiedBuffer(sseData.toString(), CharsetUtil.UTF_8); this.ctx.writeAndFlush(new DefaultHttpContent(buffer)); logger.debug("SSE event sent - Type: {}, ID: {}, Data length: {}", eventType, id, data != null ? data.length() : 0); } } public static Builder builder() { return new Builder(); } /** * Builder for creating instances of {@link McpStreamableHttpRequestHandler}. */ public static class Builder { private ObjectMapper objectMapper; private String mcpEndpoint = "/mcp"; private boolean disallowDelete = false; private McpTransportContextExtractor contextExtractor = (serverRequest, context) -> context; private Duration keepAliveInterval; public Builder objectMapper(ObjectMapper objectMapper) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); this.objectMapper = objectMapper; return this; } public Builder mcpEndpoint(String mcpEndpoint) { Assert.notNull(mcpEndpoint, "MCP endpoint must not be null"); this.mcpEndpoint = mcpEndpoint; return this; } public Builder disallowDelete(boolean disallowDelete) { this.disallowDelete = disallowDelete; return this; } public Builder contextExtractor(McpTransportContextExtractor contextExtractor) { Assert.notNull(contextExtractor, "Context extractor must not be null"); this.contextExtractor = contextExtractor; return this; } public Builder keepAliveInterval(Duration keepAliveInterval) { this.keepAliveInterval = keepAliveInterval; return this; } public McpStreamableHttpRequestHandler build() { Assert.notNull(this.objectMapper, "ObjectMapper must be set"); Assert.notNull(this.mcpEndpoint, "MCP endpoint must be set"); return new McpStreamableHttpRequestHandler(this.objectMapper, this.mcpEndpoint, this.disallowDelete, this.contextExtractor, this.keepAliveInterval); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/store/InMemoryEventStore.java ================================================ package com.taobao.arthas.mcp.server.protocol.server.store; import com.taobao.arthas.mcp.server.protocol.spec.EventStore; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.time.Instant; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.atomic.AtomicLong; import java.util.stream.Collectors; import java.util.stream.Stream; /** * In-memory implementation of EventStore. * * @author Yeaury */ public class InMemoryEventStore implements EventStore { private static final Logger logger = LoggerFactory.getLogger(InMemoryEventStore.class); /** Global event ID counter */ private final AtomicLong globalEventIdCounter = new AtomicLong(0); /** * Events storage: sessionId -> list of events */ private final Map> sessionEvents = new ConcurrentHashMap<>(); /** * Event ID to session mapping for fast lookup */ private final Map eventIdToSession = new ConcurrentHashMap<>(); /** * Maximum events to keep per session (prevent memory leaks) */ private final int maxEventsPerSession; /** * Default retention time in milliseconds (24 hours) */ private final long defaultRetentionMs; public InMemoryEventStore() { this(1000, 24 * 60 * 60 * 1000L); // 1000 events, 24 hours } public InMemoryEventStore(int maxEventsPerSession, long defaultRetentionMs) { this.maxEventsPerSession = maxEventsPerSession; this.defaultRetentionMs = defaultRetentionMs; } @Override public String storeEvent(String sessionId, McpSchema.JSONRPCMessage message) { String eventId = String.valueOf(globalEventIdCounter.incrementAndGet()); Instant timestamp = Instant.now(); StoredEvent event = new StoredEvent(eventId, sessionId, message, timestamp); sessionEvents.computeIfAbsent(sessionId, k -> new ArrayList<>()).add(event); eventIdToSession.put(eventId, sessionId); // Cleanup old events if needed List events = sessionEvents.get(sessionId); if (events.size() > maxEventsPerSession) { // Remove oldest events int toRemove = events.size() - maxEventsPerSession; for (int i = 0; i < toRemove; i++) { StoredEvent removedEvent = events.remove(0); eventIdToSession.remove(removedEvent.getEventId()); } logger.debug("Cleaned up {} old events for session {}", toRemove, sessionId); } logger.trace("Stored event {} for session {}", eventId, sessionId); return eventId; } @Override public Stream getEventsForSession(String sessionId, String fromEventId) { List events = sessionEvents.get(sessionId); if (events == null || events.isEmpty()) { return Stream.empty(); } if (fromEventId == null) { return Stream.empty(); } boolean foundStartEvent = false; List result = new ArrayList<>(); for (StoredEvent event : events) { if (!foundStartEvent) { if (event.getEventId().equals(fromEventId)) { foundStartEvent = true; result.add(event); // clear the replayed events events.remove(event); eventIdToSession.remove(event.getEventId()); } continue; } result.add(event); } return result.stream(); } @Override public void cleanupOldEvents(String sessionId, long maxAge) { List events = sessionEvents.get(sessionId); if (events == null || events.isEmpty()) { return; } Instant cutoff = Instant.now().minusMillis(maxAge); List toRemove = events.stream() .filter(event -> event.getTimestamp().isBefore(cutoff)) .collect(Collectors.toList()); for (StoredEvent event : toRemove) { events.remove(event); eventIdToSession.remove(event.getEventId()); } if (!toRemove.isEmpty()) { logger.debug("Cleaned up {} old events for session {}", toRemove.size(), sessionId); } } @Override public void removeSessionEvents(String sessionId) { List events = sessionEvents.remove(sessionId); if (events != null) { for (StoredEvent event : events) { eventIdToSession.remove(event.getEventId()); } logger.debug("Removed {} events for session {}", events.size(), sessionId); } } public void cleanupExpiredEvents() { for (String sessionId : sessionEvents.keySet()) { cleanupOldEvents(sessionId, defaultRetentionMs); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/transport/NettyStatelessServerTransport.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server.transport; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.protocol.server.McpStatelessServerHandler; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContextExtractor; import com.taobao.arthas.mcp.server.protocol.server.handler.McpStatelessHttpRequestHandler; import com.taobao.arthas.mcp.server.protocol.spec.McpStatelessServerTransport; import com.taobao.arthas.mcp.server.util.Assert; import io.netty.handler.codec.http.FullHttpRequest; import java.util.concurrent.CompletableFuture; /** * Server-side implementation of the Model Context Protocol (MCP) stateless transport * layer using HTTP through Netty. This implementation provides a bridge between * Netty operations and the MCP transport interface for stateless operations. * * @see McpStatelessServerTransport */ public class NettyStatelessServerTransport implements McpStatelessServerTransport { public static final String DEFAULT_MCP_ENDPOINT = "/mcp"; private final McpStatelessHttpRequestHandler requestHandler; /** * Constructs a new NettyStatelessServerTransportProvider instance. * * @param objectMapper The ObjectMapper to use for JSON serialization/deserialization * of messages. * @param mcpEndpoint The endpoint URI where clients should send their JSON-RPC * messages via HTTP. * @param contextExtractor The extractor for transport context from the request. * @throws IllegalArgumentException if any parameter is null */ private NettyStatelessServerTransport(ObjectMapper objectMapper, String mcpEndpoint, McpTransportContextExtractor contextExtractor) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); Assert.notNull(mcpEndpoint, "MCP endpoint must not be null"); Assert.notNull(contextExtractor, "Context extractor must not be null"); this.requestHandler = new McpStatelessHttpRequestHandler(objectMapper, mcpEndpoint, contextExtractor); } @Override public void setMcpHandler(McpStatelessServerHandler mcpHandler) { requestHandler.setMcpHandler(mcpHandler); } /** * Initiates a graceful shutdown of the transport. * * @return A CompletableFuture that completes when all cleanup operations are finished */ @Override public CompletableFuture closeGracefully() { return requestHandler.closeGracefully(); } /** * Gets the underlying HTTP request handler. * * @return The McpStatelessHttpRequestHandler instance */ public McpStatelessHttpRequestHandler getMcpRequestHandler() { if (this.requestHandler != null) { return this.requestHandler; } throw new UnsupportedOperationException("Stateless transport provider does not support request handler"); } public static Builder builder() { return new Builder(); } /** * Builder for creating instances of {@link NettyStatelessServerTransport}. */ public static class Builder { private ObjectMapper objectMapper; private String mcpEndpoint = DEFAULT_MCP_ENDPOINT; private McpTransportContextExtractor contextExtractor = (serverRequest, context) -> context; public Builder objectMapper(ObjectMapper objectMapper) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); this.objectMapper = objectMapper; return this; } public Builder mcpEndpoint(String mcpEndpoint) { Assert.notNull(mcpEndpoint, "MCP endpoint must not be null"); this.mcpEndpoint = mcpEndpoint; return this; } public Builder contextExtractor(McpTransportContextExtractor contextExtractor) { Assert.notNull(contextExtractor, "Context extractor must not be null"); this.contextExtractor = contextExtractor; return this; } public NettyStatelessServerTransport build() { Assert.notNull(this.objectMapper, "ObjectMapper must be set"); Assert.notNull(this.mcpEndpoint, "MCP endpoint must be set"); return new NettyStatelessServerTransport(this.objectMapper, this.mcpEndpoint, this.contextExtractor); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/server/transport/NettyStreamableServerTransportProvider.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.server.transport; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContextExtractor; import com.taobao.arthas.mcp.server.protocol.server.handler.McpStreamableHttpRequestHandler; import com.taobao.arthas.mcp.server.protocol.spec.McpStreamableServerSession; import com.taobao.arthas.mcp.server.protocol.spec.McpStreamableServerTransportProvider; import com.taobao.arthas.mcp.server.protocol.spec.ProtocolVersions; import com.taobao.arthas.mcp.server.util.Assert; import io.netty.handler.codec.http.FullHttpRequest; import java.time.Duration; import java.util.Arrays; import java.util.List; import java.util.concurrent.CompletableFuture; /** * Server-side implementation of the Model Context Protocol (MCP) streamable transport * layer using HTTP with Server-Sent Events (SSE) through Netty. This implementation * provides a bridge between Netty operations and the MCP transport interface. * * @see McpStreamableServerTransportProvider */ public class NettyStreamableServerTransportProvider implements McpStreamableServerTransportProvider { public static final String DEFAULT_MCP_ENDPOINT = "/mcp"; private final McpStreamableHttpRequestHandler requestHandler; /** * Constructs a new NettyStreamableServerTransportProvider instance. * * @param objectMapper The ObjectMapper to use for JSON serialization/deserialization * of messages. * @param mcpEndpoint The endpoint URI where clients should send their JSON-RPC * messages via HTTP. * @param disallowDelete Whether to disallow DELETE requests on the endpoint. * @param contextExtractor The extractor for transport context from the request. * @param keepAliveInterval Interval for keep-alive pings (null to disable) * @throws IllegalArgumentException if any parameter is null */ private NettyStreamableServerTransportProvider(ObjectMapper objectMapper, String mcpEndpoint, boolean disallowDelete, McpTransportContextExtractor contextExtractor, Duration keepAliveInterval) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); Assert.notNull(mcpEndpoint, "MCP endpoint must not be null"); Assert.notNull(contextExtractor, "Context extractor must not be null"); this.requestHandler = new McpStreamableHttpRequestHandler(objectMapper, mcpEndpoint, disallowDelete, contextExtractor, keepAliveInterval); } @Override public List protocolVersions() { return Arrays.asList(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26, ProtocolVersions.MCP_2025_06_18); } @Override public void setSessionFactory(McpStreamableServerSession.Factory sessionFactory) { requestHandler.setSessionFactory(sessionFactory); } /** * Broadcasts a notification to all connected clients through their SSE connections. * * @param method The method name for the notification * @param params The parameters for the notification * @return A CompletableFuture that completes when the broadcast attempt is finished */ @Override public CompletableFuture notifyClients(String method, Object params) { return requestHandler.notifyClients(method, params); } /** * Initiates a graceful shutdown of the transport. * * @return A CompletableFuture that completes when all cleanup operations are finished */ @Override public CompletableFuture closeGracefully() { return requestHandler.closeGracefully(); } @Override public McpStreamableHttpRequestHandler getMcpRequestHandler() { if (this.requestHandler != null) { return this.requestHandler; } throw new UnsupportedOperationException("Streamable transport provider does not support legacy SSE request handler"); } public static Builder builder() { return new Builder(); } /** * Builder for creating instances of {@link NettyStreamableServerTransportProvider}. */ public static class Builder { private ObjectMapper objectMapper; private String mcpEndpoint = DEFAULT_MCP_ENDPOINT; private boolean disallowDelete = false; private McpTransportContextExtractor contextExtractor = (serverRequest, context) -> context; private Duration keepAliveInterval; public Builder objectMapper(ObjectMapper objectMapper) { Assert.notNull(objectMapper, "ObjectMapper must not be null"); this.objectMapper = objectMapper; return this; } public Builder mcpEndpoint(String mcpEndpoint) { Assert.notNull(mcpEndpoint, "MCP endpoint must not be null"); this.mcpEndpoint = mcpEndpoint; return this; } public Builder disallowDelete(boolean disallowDelete) { this.disallowDelete = disallowDelete; return this; } public Builder contextExtractor(McpTransportContextExtractor contextExtractor) { Assert.notNull(contextExtractor, "Context extractor must not be null"); this.contextExtractor = contextExtractor; return this; } public Builder keepAliveInterval(Duration keepAliveInterval) { this.keepAliveInterval = keepAliveInterval; return this; } public NettyStreamableServerTransportProvider build() { Assert.notNull(this.objectMapper, "ObjectMapper must be set"); Assert.notNull(this.mcpEndpoint, "MCP endpoint must be set"); return new NettyStreamableServerTransportProvider(this.objectMapper, this.mcpEndpoint, this.disallowDelete, this.contextExtractor, this.keepAliveInterval); } } // Placeholder interface for KeepAliveScheduler if not already implemented private interface KeepAliveScheduler { void shutdown(); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/DefaultMcpStreamableServerSessionFactory.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.taobao.arthas.mcp.server.CommandExecutor; import com.taobao.arthas.mcp.server.protocol.server.McpInitRequestHandler; import com.taobao.arthas.mcp.server.protocol.server.McpNotificationHandler; import com.taobao.arthas.mcp.server.protocol.server.McpRequestHandler; import com.taobao.arthas.mcp.server.protocol.server.store.InMemoryEventStore; import java.time.Duration; import java.util.Map; import java.util.UUID; import java.util.concurrent.CompletableFuture; /** * Default implementation of the streamable server session factory. * This factory creates new MCP streamable server sessions with the provided configuration. * */ public class DefaultMcpStreamableServerSessionFactory implements McpStreamableServerSession.Factory { private final Duration requestTimeout; private final McpInitRequestHandler mcpInitRequestHandler; private final Map> requestHandlers; private final Map notificationHandlers; private final CommandExecutor commandExecutor; public DefaultMcpStreamableServerSessionFactory(Duration requestTimeout, McpInitRequestHandler mcpInitRequestHandler, Map> requestHandlers, Map notificationHandlers, CommandExecutor commandExecutor) { this.requestTimeout = requestTimeout; this.mcpInitRequestHandler = mcpInitRequestHandler; this.requestHandlers = requestHandlers; this.notificationHandlers = notificationHandlers; this.commandExecutor = commandExecutor; } @Override public McpStreamableServerSession.McpStreamableServerSessionInit startSession( McpSchema.InitializeRequest initializeRequest) { // Create a new session with a unique ID McpStreamableServerSession session = new McpStreamableServerSession( UUID.randomUUID().toString(), initializeRequest.getCapabilities(), initializeRequest.getClientInfo(), requestTimeout, requestHandlers, notificationHandlers, commandExecutor, new InMemoryEventStore()); // Handle the initialization request CompletableFuture initResult = this.mcpInitRequestHandler.handle(initializeRequest); return new McpStreamableServerSession.McpStreamableServerSessionInit(session, initResult); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/EventStore.java ================================================ package com.taobao.arthas.mcp.server.protocol.spec; import java.time.Instant; import java.util.List; import java.util.function.Consumer; import java.util.stream.Stream; /** * EventStore interface for storing and replaying JSON-RPC events. * Supports event persistence and stream resumability for MCP Streamable HTTP protocol. * * @author Yeaury */ public interface EventStore { class StoredEvent { private final String eventId; private final String sessionId; private final McpSchema.JSONRPCMessage message; private final Instant timestamp; public StoredEvent(String eventId, String sessionId, McpSchema.JSONRPCMessage message, Instant timestamp) { this.eventId = eventId; this.sessionId = sessionId; this.message = message; this.timestamp = timestamp; } public String getEventId() { return eventId; } public String getSessionId() { return sessionId; } public McpSchema.JSONRPCMessage getMessage() { return message; } public Instant getTimestamp() { return timestamp; } } String storeEvent(String sessionId, McpSchema.JSONRPCMessage message); Stream getEventsForSession(String sessionId, String fromEventId); void cleanupOldEvents(String sessionId, long maxAge); void removeSessionEvents(String sessionId); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/HttpHeaders.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; public interface HttpHeaders { /** * Identifies individual MCP sessions. */ String MCP_SESSION_ID = "mcp-session-id"; /** * Identifies events within an SSE Stream. */ String LAST_EVENT_ID = "last-event-id"; /** * Identifies the MCP protocol version. */ String PROTOCOL_VERSION = "MCP-Protocol-Version"; } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpError.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema.JSONRPCResponse.JSONRPCError; /** * Exception class for representing JSON-RPC errors in MCP protocol. * * @author Yeaury */ public class McpError extends RuntimeException { private JSONRPCError jsonRpcError; public McpError(JSONRPCError jsonRpcError) { super(jsonRpcError.getMessage()); this.jsonRpcError = jsonRpcError; } public McpError(Object error) { super(error.toString()); } public JSONRPCError getJsonRpcError() { return jsonRpcError; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpSchema.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.fasterxml.jackson.annotation.*; import com.fasterxml.jackson.annotation.JsonTypeInfo.As; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.util.Assert; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.util.*; /** * Based on the JSON-RPC 2.0 specification * and the * Model Context Protocol Schema. * * @author Yeaury */ public final class McpSchema { private static final Logger logger = LoggerFactory.getLogger(McpSchema.class); private McpSchema() { } public static final String LATEST_PROTOCOL_VERSION = ProtocolVersions.MCP_2025_06_18; public static final String JSONRPC_VERSION = "2.0"; // --------------------------- // Method Names // --------------------------- // Lifecycle Methods public static final String METHOD_INITIALIZE = "initialize"; public static final String METHOD_NOTIFICATION_INITIALIZED = "notifications/initialized"; public static final String METHOD_PING = "ping"; public static final String METHOD_NOTIFICATION_PROGRESS = "notifications/progress"; // Tool Methods public static final String METHOD_TOOLS_LIST = "tools/list"; public static final String METHOD_TOOLS_CALL = "tools/call"; public static final String METHOD_NOTIFICATION_TOOLS_LIST_CHANGED = "notifications/tools/list_changed"; // Resources Methods public static final String METHOD_RESOURCES_LIST = "resources/list"; public static final String METHOD_RESOURCES_READ = "resources/read"; public static final String METHOD_NOTIFICATION_RESOURCES_LIST_CHANGED = "notifications/resources/list_changed"; public static final String METHOD_RESOURCES_TEMPLATES_LIST = "resources/templates/list"; // Prompt Methods public static final String METHOD_PROMPT_LIST = "prompts/list"; public static final String METHOD_PROMPT_GET = "prompts/get"; public static final String METHOD_NOTIFICATION_PROMPTS_LIST_CHANGED = "notifications/prompts/list_changed"; // Logging Methods public static final String METHOD_LOGGING_SET_LEVEL = "logging/setLevel"; public static final String METHOD_NOTIFICATION_MESSAGE = "notifications/message"; // Roots Methods public static final String METHOD_ROOTS_LIST = "roots/list"; public static final String METHOD_NOTIFICATION_ROOTS_LIST_CHANGED = "notifications/roots/list_changed"; // Sampling Methods public static final String METHOD_SAMPLING_CREATE_MESSAGE = "sampling/createMessage"; // Elicitation Methods public static final String METHOD_ELICITATION_CREATE = "elicitation/create"; private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper(); // --------------------------- // JSON-RPC Error Codes // --------------------------- /** * Standard error codes used in MCP JSON-RPC responses. */ public static final class ErrorCodes { /** * The JSON received by the server is invalid. */ public static final int PARSE_ERROR = -32700; /** * The JSON sent is not a valid Request object. */ public static final int INVALID_REQUEST = -32600; /** * The method does not exist or is unavailable. */ public static final int METHOD_NOT_FOUND = -32601; /** * Invalid method parameters. */ public static final int INVALID_PARAMS = -32602; /** * Internal JSON-RPC error. */ public static final int INTERNAL_ERROR = -32603; } public interface Meta { default Map meta() { return null; } } public interface Request extends Meta { default Object progressToken() { Map metadata = meta(); if (metadata != null && metadata.containsKey("progressToken")) { return metadata.get("progressToken"); } return null; } } public interface Result extends Meta { } private static final TypeReference> MAP_TYPE_REF = new TypeReference>() { }; /** * Deserializes a JSON string into a JSONRPCMessage object. * @param objectMapper The ObjectMapper instance to use for deserialization * @param jsonText The JSON string to deserialize * @return A JSONRPCMessage instance using either the {@link JSONRPCRequest}, * {@link JSONRPCNotification}, or {@link JSONRPCResponse} classes. * @throws IOException If there's an error during deserialization * @throws IllegalArgumentException If the JSON structure doesn't match any known * message type */ public static JSONRPCMessage deserializeJsonRpcMessage(ObjectMapper objectMapper, String jsonText) throws IOException { logger.debug("Received JSON message: {}", jsonText); Map map = objectMapper.readValue(jsonText, MAP_TYPE_REF); // Determine message type based on specific JSON structure if (map.containsKey("method") && map.containsKey("id")) { return objectMapper.convertValue(map, JSONRPCRequest.class); } else if (map.containsKey("method") && !map.containsKey("id")) { return objectMapper.convertValue(map, JSONRPCNotification.class); } else if (map.containsKey("result") || map.containsKey("error")) { return objectMapper.convertValue(map, JSONRPCResponse.class); } throw new IllegalArgumentException("Cannot deserialize JSONRPCMessage: " + jsonText); } // --------------------------- // JSON-RPC Message Types // --------------------------- public interface JSONRPCMessage { String getJsonrpc(); } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class JSONRPCRequest implements JSONRPCMessage { private final String jsonrpc; private final String method; private final Object id; private final Object params; public JSONRPCRequest( @JsonProperty("jsonrpc") String jsonrpc, @JsonProperty("method") String method, @JsonProperty("id") Object id, @JsonProperty("params") Object params) { this.jsonrpc = jsonrpc; this.method = method; this.id = id; this.params = params; } @Override public String getJsonrpc() { return jsonrpc; } public String getMethod() { return method; } public Object getId() { return id; } public Object getParams() { return params; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class JSONRPCNotification implements JSONRPCMessage { private final String jsonrpc; private final String method; private final Object params; public JSONRPCNotification( @JsonProperty("jsonrpc") String jsonrpc, @JsonProperty("method") String method, @JsonProperty("params") Object params) { this.jsonrpc = jsonrpc; this.method = method; this.params = params; } @Override public String getJsonrpc() { return jsonrpc; } public String getMethod() { return method; } public Object getParams() { return params; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class JSONRPCResponse implements JSONRPCMessage { private final String jsonrpc; private final Object id; private final Object result; private final JSONRPCError error; public JSONRPCResponse( @JsonProperty("jsonrpc") String jsonrpc, @JsonProperty("id") Object id, @JsonProperty("result") Object result, @JsonProperty("error") JSONRPCError error) { this.jsonrpc = jsonrpc; this.id = id; this.result = result; this.error = error; } @Override public String getJsonrpc() { return jsonrpc; } public Object getId() { return id; } public Object getResult() { return result; } public JSONRPCError getError() { return error; } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class JSONRPCError { private final int code; private final String message; private final Object data; public JSONRPCError( @JsonProperty("code") int code, @JsonProperty("message") String message, @JsonProperty("data") Object data) { this.code = code; this.message = message; this.data = data; } public int getCode() { return code; } public String getMessage() { return message; } public Object getData() { return data; } } } // --------------------------- // Initialization // --------------------------- @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class InitializeRequest implements Request { private final String protocolVersion; private final ClientCapabilities capabilities; private final Implementation clientInfo; public InitializeRequest( @JsonProperty("protocolVersion") String protocolVersion, @JsonProperty("capabilities") ClientCapabilities capabilities, @JsonProperty("clientInfo") Implementation clientInfo) { this.protocolVersion = protocolVersion; this.capabilities = capabilities; this.clientInfo = clientInfo; } public String getProtocolVersion() { return protocolVersion; } public ClientCapabilities getCapabilities() { return capabilities; } public Implementation getClientInfo() { return clientInfo; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class InitializeResult implements Result { private final String protocolVersion; private final ServerCapabilities capabilities; private final Implementation serverInfo; private final String instructions; public InitializeResult( @JsonProperty("protocolVersion") String protocolVersion, @JsonProperty("capabilities") ServerCapabilities capabilities, @JsonProperty("serverInfo") Implementation serverInfo, @JsonProperty("instructions") String instructions) { this.protocolVersion = protocolVersion; this.capabilities = capabilities; this.serverInfo = serverInfo; this.instructions = instructions; } public String getProtocolVersion() { return protocolVersion; } public ServerCapabilities getCapabilities() { return capabilities; } public Implementation getServerInfo() { return serverInfo; } public String getInstructions() { return instructions; } } /** * Clients can implement additional features to enrich connected MCP servers with * additional capabilities. These capabilities can be used to extend the functionality * of the server, or to provide additional information to the server about the * client's capabilities. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ClientCapabilities { private final Map experimental; private final RootCapabilities roots; private final Sampling sampling; private final Elicitation elicitation; public ClientCapabilities( @JsonProperty("experimental") Map experimental, @JsonProperty("roots") RootCapabilities roots, @JsonProperty("sampling") Sampling sampling, @JsonProperty("elicitation") Elicitation elicitation) { this.experimental = experimental; this.roots = roots; this.sampling = sampling; this.elicitation = elicitation; } /** * Roots define the boundaries of where servers can operate within the filesystem, * allowing them to understand which directories and files they have access to. * Servers can request the list of roots from supporting clients and * receive notifications when that list changes. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class RootCapabilities { private final Boolean listChanged; public RootCapabilities( @JsonProperty("listChanged") Boolean listChanged) { this.listChanged = listChanged; } public Boolean getListChanged() { return listChanged; } } /** * Provides a standardized way for servers to request LLM * sampling ("completions" or "generations") from language * models via clients. This flow allows clients to maintain * control over model access, selection, and permissions * while enabling servers to leverage AI capabilities—with * no server API keys necessary. Servers can request text or * image-based interactions and optionally include context * from MCP servers in their prompts. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) public static class Sampling { } @JsonInclude(JsonInclude.Include.NON_ABSENT) public static class Elicitation { } public Map getExperimental() { return experimental; } public RootCapabilities getRoots() { return roots; } public Sampling getSampling() { return sampling; } public Elicitation getElicitation() { return elicitation; } public static Builder builder() { return new Builder(); } public static class Builder { private Map experimental; private RootCapabilities roots; private Sampling sampling; private Elicitation elicitation; public Builder experimental(Map experimental) { this.experimental = experimental; return this; } public Builder roots(Boolean listChanged) { this.roots = new RootCapabilities(listChanged); return this; } public Builder sampling() { this.sampling = new Sampling(); return this; } public Builder elicitation() { this.elicitation = new Elicitation(); return this; } public ClientCapabilities build() { return new ClientCapabilities(experimental, roots, sampling, elicitation); } } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ServerCapabilities { private final Map experimental; private final LoggingCapabilities logging; private final PromptCapabilities prompts; private final ResourceCapabilities resources; private final ToolCapabilities tools; public ServerCapabilities( @JsonProperty("experimental") Map experimental, @JsonProperty("logging") LoggingCapabilities logging, @JsonProperty("prompts") PromptCapabilities prompts, @JsonProperty("resources") ResourceCapabilities resources, @JsonProperty("tools") ToolCapabilities tools) { this.experimental = experimental; this.logging = logging; this.prompts = prompts; this.resources = resources; this.tools = tools; } public static Builder builder() { return new Builder(); } public static class Builder { private Map experimental; private LoggingCapabilities logging; private PromptCapabilities prompts; private ResourceCapabilities resources; private ToolCapabilities tools; public Builder experimental(Map experimental) { this.experimental = experimental; return this; } public Builder logging(LoggingCapabilities logging) { this.logging = logging; return this; } public Builder prompts(PromptCapabilities prompts) { this.prompts = prompts; return this; } public Builder resources(ResourceCapabilities resources) { this.resources = resources; return this; } public Builder tools(ToolCapabilities tools) { this.tools = tools; return this; } public ServerCapabilities build() { return new ServerCapabilities(experimental, logging, prompts, resources, tools); } } @JsonInclude(JsonInclude.Include.NON_ABSENT) public static class LoggingCapabilities { } @JsonInclude(JsonInclude.Include.NON_ABSENT) public static class PromptCapabilities { private final Boolean listChanged; public PromptCapabilities(@JsonProperty("listChanged") Boolean listChanged) { this.listChanged = listChanged; } public Boolean getListChanged() { return listChanged; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) public static class ResourceCapabilities { private final Boolean subscribe; private final Boolean listChanged; public ResourceCapabilities( @JsonProperty("subscribe") Boolean subscribe, @JsonProperty("listChanged") Boolean listChanged) { this.subscribe = subscribe; this.listChanged = listChanged; } public Boolean getSubscribe() { return subscribe; } public Boolean getListChanged() { return listChanged; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) public static class ToolCapabilities { private final Boolean listChanged; public ToolCapabilities(@JsonProperty("listChanged") Boolean listChanged) { this.listChanged = listChanged; } public Boolean getListChanged() { return listChanged; } } public Map getExperimental() { return experimental; } public LoggingCapabilities getLogging() { return logging; } public PromptCapabilities getPrompts() { return prompts; } public ResourceCapabilities getResources() { return resources; } public ToolCapabilities getTools() { return tools; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class Implementation { private final String name; private final String version; public Implementation( @JsonProperty("name") String name, @JsonProperty("version") String version) { this.name = name; this.version = version; } public String getName() { return name; } public String getVersion() { return version; } } // Existing Enums and Base Types public enum Role { @JsonProperty("user") USER, @JsonProperty("assistant") ASSISTANT } public enum StopReason { @JsonProperty("stop") STOP, @JsonProperty("length") LENGTH, @JsonProperty("content_filter") CONTENT_FILTER } public enum ContextInclusionStrategy { @JsonProperty("none") NONE, @JsonProperty("all") ALL, @JsonProperty("relevant") RELEVANT } // --------------------------- // Resource Interfaces // --------------------------- /** * Base for objects that include optional annotations for the client. The client can * use annotations to inform how objects are used or displayed */ public interface Annotated { Annotations annotations(); } /** * Optional annotations for the client. The client can use annotations to inform how * objects are used or displayed. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class Annotations { private final List audience; private final Double priority; public Annotations( @JsonProperty("audience") List audience, @JsonProperty("priority") Double priority) { this.audience = audience; this.priority = priority; } public List getAudience() { return audience; } public Double getPriority() { return priority; } } /** * A known resource that the server is capable of reading. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class Resource implements Annotated { private final String uri; private final String name; private final String description; private final String mimeType; private final Annotations annotations; public Resource( @JsonProperty("uri") String uri, @JsonProperty("name") String name, @JsonProperty("description") String description, @JsonProperty("mimeType") String mimeType, @JsonProperty("annotations") Annotations annotations) { this.uri = uri; this.name = name; this.description = description; this.mimeType = mimeType; this.annotations = annotations; } @Override public Annotations annotations() { return annotations; } public String getUri() { return uri; } public String getName() { return name; } public String getDescription() { return description; } public String getMimeType() { return mimeType; } } /** * Resource templates allow servers to expose parameterized resources using URI * templates. * * @see RFC 6570 */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ResourceTemplate implements Annotated { private final String uriTemplate; private final String name; private final String description; private final String mimeType; private final Annotations annotations; public ResourceTemplate( @JsonProperty("uriTemplate") String uriTemplate, @JsonProperty("name") String name, @JsonProperty("description") String description, @JsonProperty("mimeType") String mimeType, @JsonProperty("annotations") Annotations annotations) { this.uriTemplate = uriTemplate; this.name = name; this.description = description; this.mimeType = mimeType; this.annotations = annotations; } @Override public Annotations annotations() { return annotations; } public String getUriTemplate() { return uriTemplate; } public String getName() { return name; } public String getDescription() { return description; } public String getMimeType() { return mimeType; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ListResourcesResult implements Result { private final List resources; private final String nextCursor; private final Map meta; public ListResourcesResult( @JsonProperty("resources") List resources, @JsonProperty("nextCursor") String nextCursor, @JsonProperty("_meta") Map meta) { this.resources = resources; this.nextCursor = nextCursor; this.meta = meta; } public ListResourcesResult(List resources, String nextCursor) { this(resources, nextCursor, null); } public List getResources() { return resources; } public String getNextCursor() { return nextCursor; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } public Object getProgressToken() { return (meta() != null) ? meta().get("progressToken") : null; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ListResourceTemplatesResult implements Result { private final List resourceTemplates; private final String nextCursor; private final Map meta; public ListResourceTemplatesResult( @JsonProperty("resourceTemplates") List resourceTemplates, @JsonProperty("nextCursor") String nextCursor, @JsonProperty("_meta") Map meta) { this.resourceTemplates = resourceTemplates; this.nextCursor = nextCursor; this.meta = meta; } public ListResourceTemplatesResult(List resourceTemplates, String nextCursor) { this(resourceTemplates, nextCursor, null); } public List getResourceTemplates() { return resourceTemplates; } public String getNextCursor() { return nextCursor; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ReadResourceRequest { private final String uri; public ReadResourceRequest( @JsonProperty("uri") String uri) { this.uri = uri; } public String getUri() { return uri; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ReadResourceResult implements Result { private final List contents; private final Map meta; public ReadResourceResult( @JsonProperty("contents") List contents, @JsonProperty("_meta") Map meta) { this.contents = contents; this.meta = meta; } public ReadResourceResult(List contents) { this(contents, null); } public List getContents() { return contents; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } } /** * Sent from the client to request resources/updated notifications from the server * whenever a particular resource changes. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class SubscribeRequest { private final String uri; public SubscribeRequest( @JsonProperty("uri") String uri) { this.uri = uri; } public String getUri() { return uri; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class UnsubscribeRequest { private final String uri; public UnsubscribeRequest( @JsonProperty("uri") String uri) { this.uri = uri; } public String getUri() { return uri; } } /** * The contents of a specific resource or sub-resource. */ @JsonTypeInfo(use = JsonTypeInfo.Id.DEDUCTION, include = As.PROPERTY) @JsonSubTypes({ @JsonSubTypes.Type(value = TextResourceContents.class, name = "text"), @JsonSubTypes.Type(value = BlobResourceContents.class, name = "blob") }) public interface ResourceContents { /** * The URI of this resource. * @return the URI of this resource. */ String uri(); /** * The MIME type of this resource. * @return the MIME type of this resource. */ String mimeType(); } /** * Text contents of a resource. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class TextResourceContents implements ResourceContents { private final String uri; private final String mimeType; private final String text; public TextResourceContents( @JsonProperty("uri") String uri, @JsonProperty("mimeType") String mimeType, @JsonProperty("text") String text) { this.uri = uri; this.mimeType = mimeType; this.text = text; } @Override public String uri() { return uri; } @Override public String mimeType() { return mimeType; } public String getText() { return text; } } /** * Binary contents of a resource. * * This must only be set if the resource can actually be represented as binary data * (not text). */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class BlobResourceContents implements ResourceContents { private final String uri; private final String mimeType; private final String blob; public BlobResourceContents( @JsonProperty("uri") String uri, @JsonProperty("mimeType") String mimeType, @JsonProperty("blob") String blob) { this.uri = uri; this.mimeType = mimeType; this.blob = blob; } @Override public String uri() { return uri; } @Override public String mimeType() { return mimeType; } public String getBlob() { return blob; } } // --------------------------- // Prompt Interfaces // --------------------------- /** * A prompt or prompt template that the server offers. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class Prompt { private final String name; private final String description; private final List arguments; public Prompt( @JsonProperty("name") String name, @JsonProperty("description") String description, @JsonProperty("arguments") List arguments) { this.name = name; this.description = description; this.arguments = arguments; } public String getName() { return name; } public String getDescription() { return description; } public List getArguments() { return arguments; } } /** * Describes an argument that a prompt can accept. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class PromptArgument { private final String name; private final String description; private final Boolean required; public PromptArgument( @JsonProperty("name") String name, @JsonProperty("description") String description, @JsonProperty("required") Boolean required) { this.name = name; this.description = description; this.required = required; } public String getName() { return name; } public String getDescription() { return description; } public Boolean getRequired() { return required; } } /** * Describes a message returned as part of a prompt. * This is similar to `SamplingMessage`, but also supports the embedding of resources * from the MCP server. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class PromptMessage { private final Role role; private final Content content; public PromptMessage( @JsonProperty("role") Role role, @JsonProperty("content") Content content) { this.role = role; this.content = content; } public Role getRole() { return role; } public Content getContent() { return content; } } /** * The server's response to a prompts/list request from the client. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ListPromptsResult implements Result { private final List prompts; private final String nextCursor; private final Map meta; public ListPromptsResult( @JsonProperty("prompts") List prompts, @JsonProperty("nextCursor") String nextCursor, @JsonProperty("_meta") Map meta) { this.prompts = prompts; this.nextCursor = nextCursor; this.meta = meta; } public ListPromptsResult(List prompts, String nextCursor) { this(prompts, nextCursor, null); } public List getPrompts() { return prompts; } public String getNextCursor() { return nextCursor; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } } /** * Used by the client to get a prompt provided by the server. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class GetPromptRequest implements Request { private final String name; private final Map arguments; public GetPromptRequest( @JsonProperty("name") String name, @JsonProperty("arguments") Map arguments) { this.name = name; this.arguments = arguments; } public String getName() { return name; } public Map getArguments() { return arguments; } } /** * The server's response to a prompts/get request from the client. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class GetPromptResult implements Result { private final String description; private final List messages; private final Map meta; public GetPromptResult( @JsonProperty("description") String description, @JsonProperty("messages") List messages, @JsonProperty("_meta") Map meta) { this.description = description; this.messages = messages; this.meta = meta; } public GetPromptResult(String description, List messages) { this(description, messages, null); } public String getDescription() { return description; } public List getMessages() { return messages; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } } // --------------------------- // Tool Interfaces // --------------------------- /** * The server's response to a tools/list request from the client. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ListToolsResult implements Result { private final List tools; private final String nextCursor; private final Map meta; public ListToolsResult( @JsonProperty("tools") List tools, @JsonProperty("nextCursor") String nextCursor, @JsonProperty("_meta") Map meta) { this.tools = tools; this.nextCursor = nextCursor; this.meta = meta; } public ListToolsResult(List tools, String nextCursor) { this(tools, nextCursor, null); } public List getTools() { return tools; } public String getNextCursor() { return nextCursor; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class JsonSchema { private final String type; private final Map properties; private final List required; private final Boolean additionalProperties; public JsonSchema( @JsonProperty("type") String type, @JsonProperty("properties") Map properties, @JsonProperty("required") List required, @JsonProperty("additionalProperties") Boolean additionalProperties) { this.type = type; this.properties = properties; this.required = required; this.additionalProperties = additionalProperties; } public String getType() { return type; } public Map getProperties() { return properties; } public List getRequired() { return required; } public Boolean getAdditionalProperties() { return additionalProperties; } } /** * Represents a tool that the server provides. Tools enable servers to expose * executable functionality to the system. Through these tools, you can interact with * external systems, perform computations, and take actions in the real world. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class Tool { private final String name; private final String description; private final JsonSchema inputSchema; public Tool( @JsonProperty("name") String name, @JsonProperty("description") String description, @JsonProperty("inputSchema") JsonSchema inputSchema) { this.name = name; this.description = description; this.inputSchema = inputSchema; } public String getName() { return name; } public String getDescription() { return description; } public JsonSchema getInputSchema() { return inputSchema; } } private static JsonSchema parseSchema(String schema) { try { return OBJECT_MAPPER.readValue(schema, JsonSchema.class); } catch (IOException e) { throw new IllegalArgumentException("Invalid schema: " + schema, e); } } /** * Used by the client to call a tool provided by the server. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class CallToolRequest implements Request { private final String name; private final Map arguments; private final Map meta; public CallToolRequest( @JsonProperty("name") String name, @JsonProperty("arguments") Map arguments, @JsonProperty("_meta") Map meta) { this.name = name; this.arguments = arguments; this.meta = meta; } private static Map parseJsonArguments(String jsonArguments) { try { return OBJECT_MAPPER.readValue(jsonArguments, MAP_TYPE_REF); } catch (IOException e) { throw new IllegalArgumentException("Invalid arguments: " + jsonArguments, e); } } public String getName() { return name; } public Map getArguments() { return arguments; } @Override public Map meta() { return meta; } public static Builder builder() { return new Builder(); } public static class Builder { private String name; private Map arguments; private Map meta; public Builder name(String name) { this.name = name; return this; } public Builder arguments(Map arguments) { this.arguments = arguments; return this; } public Builder arguments(String jsonArguments) { this.arguments = parseJsonArguments(jsonArguments); return this; } public Builder meta(Map meta) { this.meta = meta; return this; } public Builder progressToken(String progressToken) { if (this.meta == null) { this.meta = new HashMap<>(); } this.meta.put("progressToken", progressToken); return this; } public CallToolRequest build() { Assert.hasText(name, "name must not be empty"); return new CallToolRequest(name, arguments, meta); } } } /** * The server's response to a tools/call request from the client. */ @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class CallToolResult implements Result { private final List content; private final Boolean isError; private final Map meta; public CallToolResult( @JsonProperty("content") List content, @JsonProperty("isError") Boolean isError, @JsonProperty("_meta") Map meta) { this.content = content; this.isError = isError; this.meta = meta; } public CallToolResult(String content, Boolean isError, Map meta) { this(Collections.singletonList(new TextContent(content)), isError, meta); } public List getContent() { return content; } public Boolean getIsError() { return isError; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } public static Builder builder() { return new Builder(); } public static class Builder { private List content = new ArrayList<>(); private Boolean isError; private Map meta; public Builder content(List content) { Assert.notNull(content, "content must not be null"); this.content = content; return this; } public Builder textContent(List textContent) { Assert.notNull(textContent, "textContent must not be null"); textContent.stream() .map(TextContent::new) .forEach(this.content::add); return this; } public Builder addContent(Content contentItem) { Assert.notNull(contentItem, "contentItem must not be null"); if (this.content == null) { this.content = new ArrayList<>(); } this.content.add(contentItem); return this; } public Builder addTextContent(String text) { Assert.notNull(text, "text must not be null"); return addContent(new TextContent(text)); } public Builder isError(Boolean isError) { Assert.notNull(isError, "isError must not be null"); this.isError = isError; return this; } public Builder meta(Map meta) { this.meta = meta; return this; } public CallToolResult build() { return new CallToolResult(content, isError, meta); } } } // --------------------------- // Sampling Interfaces // --------------------------- @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ModelPreferences { private final List hints; private final Double costPriority; private final Double speedPriority; private final Double intelligencePriority; public ModelPreferences( @JsonProperty("hints") List hints, @JsonProperty("costPriority") Double costPriority, @JsonProperty("speedPriority") Double speedPriority, @JsonProperty("intelligencePriority") Double intelligencePriority) { this.hints = hints; this.costPriority = costPriority; this.speedPriority = speedPriority; this.intelligencePriority = intelligencePriority; } public List getHints() { return hints; } public Double getCostPriority() { return costPriority; } public Double getSpeedPriority() { return speedPriority; } public Double getIntelligencePriority() { return intelligencePriority; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ModelHint { private final String name; public ModelHint( @JsonProperty("name") String name) { this.name = name; } public String getName() { return name; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class SamplingMessage { private final Role role; private final Content content; public SamplingMessage( @JsonProperty("role") Role role, @JsonProperty("content") Content content) { this.role = role; this.content = content; } public Role getRole() { return role; } public Content getContent() { return content; } } // Sampling and Message Creation @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class CreateMessageRequest implements Request { private final List messages; private final ModelPreferences modelPreferences; private final String systemPrompt; private final ContextInclusionStrategy includeContext; private final Double temperature; private final int maxTokens; private final List stopSequences; private final Map meta; public CreateMessageRequest( @JsonProperty("messages") List messages, @JsonProperty("modelPreferences") ModelPreferences modelPreferences, @JsonProperty("systemPrompt") String systemPrompt, @JsonProperty("includeContext") ContextInclusionStrategy includeContext, @JsonProperty("temperature") Double temperature, @JsonProperty("maxTokens") int maxTokens, @JsonProperty("stopSequences") List stopSequences, @JsonProperty("_meta") Map meta) { this.messages = messages; this.modelPreferences = modelPreferences; this.systemPrompt = systemPrompt; this.includeContext = includeContext; this.temperature = temperature; this.maxTokens = maxTokens; this.stopSequences = stopSequences; this.meta = meta; } public List getMessages() { return messages; } public ModelPreferences getModelPreferences() { return modelPreferences; } public String getSystemPrompt() { return systemPrompt; } public ContextInclusionStrategy getIncludeContext() { return includeContext; } public Double getTemperature() { return temperature; } public int getMaxTokens() { return maxTokens; } public List getStopSequences() { return stopSequences; } @Override public Map meta() { return meta; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class CreateMessageResult implements Result { private final Role role; private final Content content; private final String model; private final StopReason stopReason; public CreateMessageResult( @JsonProperty("role") Role role, @JsonProperty("content") Content content, @JsonProperty("model") String model, @JsonProperty("stopReason") StopReason stopReason) { this.role = role; this.content = content; this.model = model; this.stopReason = stopReason; } public Role getRole() { return role; } public Content getContent() { return content; } public String getModel() { return model; } public StopReason getStopReason() { return stopReason; } } // Elicitation @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ElicitRequest implements Request { private final String message; private final Map requestedSchema; private final Map meta; // Constructor public ElicitRequest( @JsonProperty("message") String message, @JsonProperty("requestedSchema") Map requestedSchema, @JsonProperty("_meta") Map meta) { this.message = message; this.requestedSchema = requestedSchema; this.meta = meta; } public String getMessage() { return message; } public Map getRequestedSchema() { return requestedSchema; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } // Backwards compatibility constructor public ElicitRequest(String message, Map requestedSchema) { this(message, requestedSchema, null); } public static Builder builder() { return new Builder(); } public static class Builder { private String message; private Map requestedSchema; private Map meta; public Builder message(String message) { this.message = message; return this; } public Builder requestedSchema(Map requestedSchema) { this.requestedSchema = requestedSchema; return this; } public Builder meta(Map meta) { this.meta = meta; return this; } public Builder progressToken(Object progressToken) { if (this.meta == null) { this.meta = new HashMap<>(); } this.meta.put("progressToken", progressToken); return this; } public ElicitRequest build() { return new ElicitRequest(message, requestedSchema, meta); } } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ElicitResult implements Result { private final Action action; private final Map content; private final Map meta; public enum Action { @JsonProperty("accept") ACCEPT, @JsonProperty("decline") DECLINE, @JsonProperty("cancel") CANCEL } // Constructor public ElicitResult( @JsonProperty("action") Action action, @JsonProperty("content") Map content, @JsonProperty("_meta") Map meta) { this.action = action; this.content = content; this.meta = meta; } public Action getAction() { return action; } public Map getContent() { return content; } @Override public Map meta() { return meta; } public Map getMeta() { return meta(); } // Backwards compatibility constructor public ElicitResult(Action action, Map content) { this(action, content, null); } public static Builder builder() { return new Builder(); } public static class Builder { private Action action; private Map content; private Map meta; public Builder action(Action action) { this.action = action; return this; } public Builder content(Map content) { this.content = content; return this; } public Builder meta(Map meta) { this.meta = meta; return this; } public ElicitResult build() { return new ElicitResult(action, content, meta); } } } // --------------------------- // Pagination Interfaces // --------------------------- @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class PaginatedRequest { private final String cursor; public PaginatedRequest( @JsonProperty("cursor") String cursor) { this.cursor = cursor; } public String getCursor() { return cursor; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class PaginatedResult { private final String nextCursor; public PaginatedResult( @JsonProperty("nextCursor") String nextCursor) { this.nextCursor = nextCursor; } public String getNextCursor() { return nextCursor; } } // --------------------------- // Progress and Logging // --------------------------- @JsonIgnoreProperties(ignoreUnknown = true) public static class ProgressNotification { private final String progressToken; private final double progress; private final Double total; public ProgressNotification( @JsonProperty("progressToken") String progressToken, @JsonProperty("progress") double progress, @JsonProperty("total") Double total) { this.progressToken = progressToken; this.progress = progress; this.total = total; } public String getProgressToken() { return progressToken; } public double getProgress() { return progress; } public Double getTotal() { return total; } } /** * The Model Context Protocol (MCP) provides a standardized way for servers to send * structured log messages to clients. Clients can control logging verbosity by * setting minimum log levels, with servers sending notifications containing severity * levels, optional logger names, and arbitrary JSON-serializable data. */ @JsonIgnoreProperties(ignoreUnknown = true) public static class LoggingMessageNotification { private final LoggingLevel level; private final String logger; private final Object data; public LoggingMessageNotification( @JsonProperty("level") LoggingLevel level, @JsonProperty("logger") String logger, @JsonProperty("data") Object data) { this.level = level; this.logger = logger; this.data = data; } public LoggingLevel getLevel() { return level; } public String getLogger() { return logger; } public Object getData() { return data; } public static Builder builder() { return new Builder(); } public static class Builder { private LoggingLevel level = LoggingLevel.INFO; private String logger = "server"; private Object data; public Builder level(LoggingLevel level) { this.level = level; return this; } public Builder logger(String logger) { this.logger = logger; return this; } public Builder data(Object data) { this.data = data; return this; } public LoggingMessageNotification build() { return new LoggingMessageNotification(level, logger, data); } } } public enum LoggingLevel { @JsonProperty("debug") DEBUG(0), @JsonProperty("info") INFO(1), @JsonProperty("notice") NOTICE(2), @JsonProperty("warning") WARNING(3), @JsonProperty("error") ERROR(4), @JsonProperty("critical") CRITICAL(5), @JsonProperty("alert") ALERT(6), @JsonProperty("emergency") EMERGENCY(7); private final int level; LoggingLevel(int level) { this.level = level; } public int level() { return level; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class SetLevelRequest { private final LoggingLevel level; public SetLevelRequest( @JsonProperty("level") LoggingLevel level) { this.level = level; } public LoggingLevel getLevel() { return level; } } /** * Notification for sending intermediate results during streaming tool execution. * This allows tools to send partial results to clients in real-time. */ @JsonIgnoreProperties(ignoreUnknown = true) public static class IntermediateResultNotification { private final String type; private final Object data; public IntermediateResultNotification( @JsonProperty("type") String type, @JsonProperty("data") Object data) { this.type = type; this.data = data; } public String getType() { return type; } public Object getData() { return data; } } // --------------------------- // Autocomplete // --------------------------- public enum CompleteArgument { @JsonProperty("name") NAME, @JsonProperty("description") DESCRIPTION, @JsonProperty("uri") URI, @JsonProperty("mimeType") MIME_TYPE } public static class CompleteRequest implements Request { public static class PromptOrResourceReference { private final String type; public PromptOrResourceReference( @JsonProperty("type") String type) { this.type = type; } public String getType() { return type; } } public static class PromptReference extends PromptOrResourceReference { private final String name; public PromptReference( @JsonProperty("type") String type, @JsonProperty("name") String name) { super(type); this.name = name; } public String getName() { return name; } } public static class ResourceReference extends PromptOrResourceReference { private final String uri; public ResourceReference( @JsonProperty("type") String type, @JsonProperty("uri") String uri) { super(type); this.uri = uri; } public String getUri() { return uri; } } private final PromptOrResourceReference ref; private final CompleteArgument argument; public CompleteRequest( @JsonProperty("ref") PromptOrResourceReference ref, @JsonProperty("argument") CompleteArgument argument) { this.ref = ref; this.argument = argument; } public PromptOrResourceReference getRef() { return ref; } public CompleteArgument getArgument() { return argument; } } public static class CompleteResult implements Result { private final CompleteCompletion completion; public CompleteResult( @JsonProperty("completion") CompleteCompletion completion) { this.completion = completion; } public CompleteCompletion getCompletion() { return completion; } } public static class CompleteCompletion { private final List values; private final Integer total; private final Boolean hasMore; public CompleteCompletion( @JsonProperty("values") List values, @JsonProperty("total") Integer total, @JsonProperty("hasMore") Boolean hasMore) { this.values = values; this.total = total; this.hasMore = hasMore; } public List getValues() { return values; } public Integer getTotal() { return total; } public Boolean getHasMore() { return hasMore; } } // --------------------------- // Content Types // --------------------------- @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = As.PROPERTY, property = "type") @JsonSubTypes({ @JsonSubTypes.Type(value = TextContent.class, name = "text"), @JsonSubTypes.Type(value = ImageContent.class, name = "image"), @JsonSubTypes.Type(value = EmbeddedResource.class, name = "resource") }) public interface Content { default String type() { if (this instanceof TextContent) { return "text"; } else if (this instanceof ImageContent) { return "image"; } else if (this instanceof EmbeddedResource) { return "resource"; } throw new IllegalArgumentException("Unknown content type: " + this); } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class TextContent implements Content { private final List audience; private final Double priority; private final String text; public TextContent( @JsonProperty("audience") List audience, @JsonProperty("priority") Double priority, @JsonProperty("text") String text) { this.audience = audience; this.priority = priority; this.text = text; } public TextContent(String content) { this(null, null, content); } public List getAudience() { return audience; } public Double getPriority() { return priority; } public String getText() { return text; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ImageContent implements Content { private final List audience; private final Double priority; private final String data; private final String mimeType; public ImageContent( @JsonProperty("audience") List audience, @JsonProperty("priority") Double priority, @JsonProperty("data") String data, @JsonProperty("mimeType") String mimeType) { this.audience = audience; this.priority = priority; this.data = data; this.mimeType = mimeType; } @Override public String type() { return "image"; } public List getAudience() { return audience; } public Double getPriority() { return priority; } public String getData() { return data; } public String getMimeType() { return mimeType; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class EmbeddedResource implements Content { private final List audience; private final Double priority; private final ResourceContents resource; public EmbeddedResource( @JsonProperty("audience") List audience, @JsonProperty("priority") Double priority, @JsonProperty("resource") ResourceContents resource) { this.audience = audience; this.priority = priority; this.resource = resource; } @Override public String type() { return "resource"; } public List getAudience() { return audience; } public Double getPriority() { return priority; } public ResourceContents getResource() { return resource; } } // --------------------------- // Roots // --------------------------- @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class Root { private final String uri; private final String name; public Root( @JsonProperty("uri") String uri, @JsonProperty("name") String name) { this.uri = uri; this.name = name; } public String getUri() { return uri; } public String getName() { return name; } } @JsonInclude(JsonInclude.Include.NON_ABSENT) @JsonIgnoreProperties(ignoreUnknown = true) public static class ListRootsResult implements Result { private final List roots; public ListRootsResult( @JsonProperty("roots") List roots) { this.roots = roots; } public List getRoots() { return roots; } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpServerTransport.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import io.netty.channel.Channel; /** * Extends McpTransport to provide access to the underlying Netty Channel for server-side transport. * * @author Yeaury */ public interface McpServerTransport extends McpTransport { Channel getChannel(); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpServerTransportProvider.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.taobao.arthas.mcp.server.protocol.server.handler.McpStreamableHttpRequestHandler; import java.util.concurrent.CompletableFuture; /** * Provides the abstraction for server-side transport providers in MCP protocol. * Defines methods for session factory setup, client notification, and graceful shutdown. * * @author Yeaury */ public interface McpServerTransportProvider { CompletableFuture notifyClients(String method, Object params); CompletableFuture closeGracefully(); default void close() { closeGracefully(); } McpStreamableHttpRequestHandler getMcpRequestHandler(); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpSession.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import java.util.concurrent.CompletableFuture; import com.fasterxml.jackson.core.type.TypeReference; /** * Represents a server-side MCP session that manages bidirectional JSON-RPC communication with the client. * * @author Yeaury */ public interface McpSession { CompletableFuture sendRequest(String method, Object requestParams, TypeReference typeRef); default CompletableFuture sendNotification(String method) { return sendNotification(method, null); } CompletableFuture sendNotification(String method, Object params); CompletableFuture closeGracefully(); void close(); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpStatelessServerTransport.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.taobao.arthas.mcp.server.protocol.server.McpStatelessServerHandler; import java.util.Arrays; import java.util.List; import java.util.concurrent.CompletableFuture; public interface McpStatelessServerTransport { void setMcpHandler(McpStatelessServerHandler mcpHandler); default void close() { this.closeGracefully(); } CompletableFuture closeGracefully(); default List protocolVersions() { return Arrays.asList(ProtocolVersions.MCP_2025_03_26, ProtocolVersions.MCP_2025_06_18); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpStreamableServerSession.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.fasterxml.jackson.core.type.TypeReference; import com.taobao.arthas.mcp.server.CommandExecutor; import com.taobao.arthas.mcp.server.protocol.server.McpNettyServerExchange; import com.taobao.arthas.mcp.server.protocol.server.McpNotificationHandler; import com.taobao.arthas.mcp.server.protocol.server.McpRequestHandler; import com.taobao.arthas.mcp.server.protocol.server.McpTransportContext; import com.taobao.arthas.mcp.server.session.ArthasCommandContext; import com.taobao.arthas.mcp.server.session.ArthasCommandSessionManager; import com.taobao.arthas.mcp.server.util.Assert; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.time.Duration; import java.util.Map; import java.util.UUID; import java.util.concurrent.CompletableFuture; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.atomic.AtomicLong; import java.util.concurrent.atomic.AtomicReference; import java.util.function.Supplier; import java.util.stream.Stream; import static com.taobao.arthas.mcp.server.util.McpAuthExtractor.MCP_AUTH_SUBJECT_KEY; /** * Main implementation of a streamable MCP server session that manages client connections * and handles JSON-RPC communication using CompletableFuture for async operations. */ public class McpStreamableServerSession implements McpSession { private static final Logger logger = LoggerFactory.getLogger(McpStreamableServerSession.class); private final ConcurrentHashMap requestIdToStream = new ConcurrentHashMap<>(); private final String id; private final Duration requestTimeout; private final AtomicLong requestCounter = new AtomicLong(0); private final Map> requestHandlers; private final Map notificationHandlers; private final AtomicReference clientCapabilities = new AtomicReference<>(); private final AtomicReference clientInfo = new AtomicReference<>(); private final AtomicReference listeningStreamRef; private final MissingMcpTransportSession missingMcpTransportSession; private volatile McpSchema.LoggingLevel minLoggingLevel = McpSchema.LoggingLevel.INFO; private final CommandExecutor commandExecutor; private final ArthasCommandSessionManager commandSessionManager; private final EventStore eventStore; public McpStreamableServerSession(String id, McpSchema.ClientCapabilities clientCapabilities, McpSchema.Implementation clientInfo, Duration requestTimeout, Map> requestHandlers, Map notificationHandlers, CommandExecutor commandExecutor, EventStore eventStore) { this.id = id; this.missingMcpTransportSession = new MissingMcpTransportSession(id); this.listeningStreamRef = new AtomicReference<>(this.missingMcpTransportSession); this.clientCapabilities.lazySet(clientCapabilities); this.clientInfo.lazySet(clientInfo); this.requestTimeout = requestTimeout; this.requestHandlers = requestHandlers; this.notificationHandlers = notificationHandlers; this.commandExecutor = commandExecutor; this.commandSessionManager = new ArthasCommandSessionManager(commandExecutor); this.eventStore = eventStore; } /** * Sets the minimum logging level for this session. * @param minLoggingLevel the minimum logging level */ public void setMinLoggingLevel(McpSchema.LoggingLevel minLoggingLevel) { Assert.notNull(minLoggingLevel, "minLoggingLevel must not be null"); this.minLoggingLevel = minLoggingLevel; } /** * Checks if notifications for the given logging level are allowed. * @param loggingLevel the logging level to check * @return true if notifications for this level are allowed */ public boolean isNotificationForLevelAllowed(McpSchema.LoggingLevel loggingLevel) { return loggingLevel.level() >= this.minLoggingLevel.level(); } public String getId() { return this.id; } private String generateRequestId() { return this.id + "-" + this.requestCounter.getAndIncrement(); } @Override public CompletableFuture sendRequest(String method, Object requestParams, TypeReference typeRef) { McpSession listeningStream = this.listeningStreamRef.get(); return listeningStream.sendRequest(method, requestParams, typeRef); } @Override public CompletableFuture sendNotification(String method, Object params) { McpSession listeningStream = this.listeningStreamRef.get(); return listeningStream.sendNotification(method, params); } public CompletableFuture delete() { return this.closeGracefully().thenRun(() -> { try { eventStore.removeSessionEvents(this.id); commandSessionManager.closeCommandSession(this.id); } catch (Exception e) { logger.warn("Failed to clear session during deletion: {}", e.getMessage()); } }); } public McpStreamableServerSessionStream listeningStream(McpStreamableServerTransport transport) { McpStreamableServerSessionStream listeningStream = new McpStreamableServerSessionStream(transport); this.listeningStreamRef.set(listeningStream); return listeningStream; } /** * 重播会话事件，从指定的最后事件ID之后开始 * * @param lastEventId 最后一个事件ID，如果为null则从头开始重播 * @return 事件消息流 */ public Stream replay(Object lastEventId) { String lastEventIdStr = lastEventId != null ? lastEventId.toString() : null; return eventStore.getEventsForSession(this.id, lastEventIdStr) .map(EventStore.StoredEvent::getMessage); } public CompletableFuture responseStream(McpSchema.JSONRPCRequest jsonrpcRequest, McpStreamableServerTransport transport, McpTransportContext transportContext) { McpStreamableServerSessionStream stream = new McpStreamableServerSessionStream(transport); McpRequestHandler requestHandler = this.requestHandlers.get(jsonrpcRequest.getMethod()); if (requestHandler == null) { MethodNotFoundError error = getMethodNotFoundError(jsonrpcRequest.getMethod()); McpSchema.JSONRPCResponse errorResponse = new McpSchema.JSONRPCResponse(McpSchema.JSONRPC_VERSION, jsonrpcRequest.getId(), null, new McpSchema.JSONRPCResponse.JSONRPCError(McpSchema.ErrorCodes.METHOD_NOT_FOUND, error.getMessage(), error.getData())); // 存储错误响应 try { eventStore.storeEvent(this.id, errorResponse); } catch (Exception e) { logger.warn("Failed to store error response event: {}", e.getMessage()); } return transport.sendMessage(errorResponse, null) .thenCompose(v -> transport.closeGracefully()); } ArthasCommandContext commandContext = createCommandContext(transportContext.get(MCP_AUTH_SUBJECT_KEY)); return requestHandler .handle(new McpNettyServerExchange(this.id, stream, clientCapabilities.get(), clientInfo.get(), transportContext), commandContext, jsonrpcRequest.getParams()) .thenApply(result -> new McpSchema.JSONRPCResponse(McpSchema.JSONRPC_VERSION, jsonrpcRequest.getId(), result, null)) .thenCompose(response -> transport.sendMessage(response, null)) .thenCompose(v -> transport.closeGracefully()); } public CompletableFuture accept(McpSchema.JSONRPCNotification notification, McpTransportContext transportContext) { McpNotificationHandler notificationHandler = this.notificationHandlers.get(notification.getMethod()); if (notificationHandler == null) { logger.error("No handler registered for notification method: {}", notification.getMethod()); return CompletableFuture.completedFuture(null); } ArthasCommandContext commandContext = createCommandContext(transportContext.get(MCP_AUTH_SUBJECT_KEY)); McpSession listeningStream = this.listeningStreamRef.get(); return notificationHandler.handle(new McpNettyServerExchange(this.id, listeningStream, this.clientCapabilities.get(), this.clientInfo.get(), transportContext), commandContext, notification.getParams()); } public CompletableFuture accept(McpSchema.JSONRPCResponse response) { McpStreamableServerSessionStream stream = this.requestIdToStream.get(response.getId()); if (stream == null) { CompletableFuture f = CompletableFuture.completedFuture(null); f.completeExceptionally(new McpError("Unexpected response for unknown id " + response.getId())); return f; } CompletableFuture future = stream.pendingResponses.remove(response.getId()); if (future == null) { CompletableFuture f = CompletableFuture.completedFuture(null); f.completeExceptionally(new McpError("Unexpected response for unknown id " + response.getId())); return f; } else { future.complete(response); } return CompletableFuture.completedFuture(null); } public class MethodNotFoundError { private final String method; private final String message; private final Object data; public MethodNotFoundError(String method, String message, Object data) { this.method = method; this.message = message; this.data = data; } public String getMethod() { return method; } public String getMessage() { return message; } public Object getData() { return data; } } private MethodNotFoundError getMethodNotFoundError(String method) { return new MethodNotFoundError(method, "Method not found: " + method, null); } @Override public CompletableFuture closeGracefully() { McpSession listeningStream = this.listeningStreamRef.getAndSet(missingMcpTransportSession); // 清理 Arthas 命令会话 try { commandSessionManager.closeCommandSession(this.id); logger.debug("Successfully closed command session during graceful shutdown: {}", this.id); } catch (Exception e) { logger.warn("Failed to close command session during graceful shutdown: {}", e.getMessage()); } return listeningStream.closeGracefully(); // TODO: Also close all the open streams } @Override public void close() { McpSession listeningStream = this.listeningStreamRef.getAndSet(missingMcpTransportSession); // 清理 Arthas 命令会话 try { commandSessionManager.closeCommandSession(this.id); logger.debug("Successfully closed command session during close: {}", this.id); } catch (Exception e) { logger.warn("Failed to close command session during close: {}", e.getMessage()); } if (listeningStream != null) { listeningStream.close(); } // TODO: Also close all open streams } public interface Factory { McpStreamableServerSessionInit startSession(McpSchema.InitializeRequest initializeRequest); } public static class McpStreamableServerSessionInit { private final McpStreamableServerSession session; private final CompletableFuture initResult; public McpStreamableServerSessionInit( McpStreamableServerSession session, CompletableFuture initResult) { this.session = session; this.initResult = initResult; } public McpStreamableServerSession session() { return session; } public CompletableFuture initResult() { return initResult; } } public final class McpStreamableServerSessionStream implements McpSession { private final ConcurrentHashMap> pendingResponses = new ConcurrentHashMap<>(); private final McpStreamableServerTransport transport; private final String transportId; private final Supplier uuidGenerator; public McpStreamableServerSessionStream(McpStreamableServerTransport transport) { this.transport = transport; this.transportId = UUID.randomUUID().toString(); // This ID design allows for a constant-time extraction of the history by // precisely identifying the SSE stream using the first component this.uuidGenerator = () -> this.transportId + "_" + UUID.randomUUID(); } @Override public CompletableFuture sendRequest(String method, Object requestParams, TypeReference typeRef) { String requestId = McpStreamableServerSession.this.generateRequestId(); McpStreamableServerSession.this.requestIdToStream.put(requestId, this); CompletableFuture responseFuture = new CompletableFuture<>(); this.pendingResponses.put(requestId, responseFuture); McpSchema.JSONRPCRequest jsonrpcRequest = new McpSchema.JSONRPCRequest(McpSchema.JSONRPC_VERSION, method, requestId, requestParams); String messageId = null; // 存储发送的请求到事件存储 try { messageId = McpStreamableServerSession.this.eventStore.storeEvent( McpStreamableServerSession.this.id, jsonrpcRequest); } catch (Exception e) { logger.warn("Failed to store outbound request event: {}", e.getMessage()); } // Send the message this.transport.sendMessage(jsonrpcRequest, messageId).exceptionally(ex -> { responseFuture.completeExceptionally(ex); return null; }); return responseFuture.handle((jsonRpcResponse, throwable) -> { // Cleanup this.pendingResponses.remove(requestId); McpStreamableServerSession.this.requestIdToStream.remove(requestId); if (throwable != null) { if (throwable instanceof RuntimeException) { throw (RuntimeException) throwable; } throw new RuntimeException(throwable); } if (jsonRpcResponse.getError() != null) { throw new RuntimeException(new McpError(jsonRpcResponse.getError())); } else { if (typeRef.getType().equals(Void.class)) { return null; } else { return this.transport.unmarshalFrom(jsonRpcResponse.getResult(), typeRef); } } }); } @Override public CompletableFuture sendNotification(String method, Object params) { McpSchema.JSONRPCNotification jsonrpcNotification = new McpSchema.JSONRPCNotification( McpSchema.JSONRPC_VERSION, method, params); String messageId = null; try { messageId = McpStreamableServerSession.this.eventStore.storeEvent( McpStreamableServerSession.this.id, jsonrpcNotification); } catch (Exception e) { logger.warn("Failed to store outbound notification event: {}", e.getMessage()); } return this.transport.sendMessage(jsonrpcNotification, messageId); } @Override public CompletableFuture closeGracefully() { // Complete all pending responses with error this.pendingResponses.values().forEach(future -> future.completeExceptionally(new RuntimeException("Stream closed"))); this.pendingResponses.clear(); // If this was the generic stream, reset it McpStreamableServerSession.this.listeningStreamRef.compareAndSet(this, McpStreamableServerSession.this.missingMcpTransportSession); McpStreamableServerSession.this.requestIdToStream.values().removeIf(this::equals); return this.transport.closeGracefully(); } @Override public void close() { this.pendingResponses.values().forEach(future -> future.completeExceptionally(new RuntimeException("Stream closed"))); this.pendingResponses.clear(); // If this was the generic stream, reset it McpStreamableServerSession.this.listeningStreamRef.compareAndSet(this, McpStreamableServerSession.this.missingMcpTransportSession); McpStreamableServerSession.this.requestIdToStream.values().removeIf(this::equals); this.transport.close(); } } /** * 创建命令执行上下文 * * @return 命令执行上下文 */ private ArthasCommandContext createCommandContext(Object authSubject) { ArthasCommandSessionManager.CommandSessionBinding binding = commandSessionManager.getCommandSession(this.id, authSubject); return new ArthasCommandContext(commandExecutor, binding); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpStreamableServerTransport.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.fasterxml.jackson.core.type.TypeReference; import java.util.concurrent.CompletableFuture; /** * Marker interface for the server-side MCP streamable transport. * This extends the basic server transport with streamable message sending capabilities. * */ public interface McpStreamableServerTransport extends McpServerTransport { CompletableFuture sendMessage(McpSchema.JSONRPCMessage message, String messageId); T unmarshalFrom(Object value, TypeReference typeRef); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpStreamableServerTransportProvider.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import java.util.Arrays; import java.util.List; import java.util.concurrent.CompletableFuture; public interface McpStreamableServerTransportProvider extends McpServerTransportProvider { void setSessionFactory(McpStreamableServerSession.Factory sessionFactory); CompletableFuture notifyClients(String method, Object params); default void close() { this.closeGracefully(); } default List protocolVersions() { return Arrays.asList(ProtocolVersions.MCP_2024_11_05); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/McpTransport.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import java.util.concurrent.CompletableFuture; import com.fasterxml.jackson.core.type.TypeReference; /** * Defines the transport abstraction for sending messages and unmarshalling data in MCP protocol. * * @author Yeaury */ public interface McpTransport { CompletableFuture closeGracefully(); default void close() { this.closeGracefully(); } CompletableFuture sendMessage(McpSchema.JSONRPCMessage message); T unmarshalFrom(Object data, TypeReference typeRef); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/MissingMcpTransportSession.java ================================================ /* * Copyright 2024-2024 the original author or authors. */ package com.taobao.arthas.mcp.server.protocol.spec; import com.fasterxml.jackson.core.type.TypeReference; import java.util.concurrent.CompletableFuture; /** * A placeholder implementation of McpLoggableSession that represents a missing or unavailable transport session. * This class is used when no active transport is available but session operations are attempted. */ public class MissingMcpTransportSession implements McpSession { private final String sessionId; public MissingMcpTransportSession(String sessionId) { this.sessionId = sessionId; } @Override public CompletableFuture sendRequest(String method, Object requestParams, TypeReference typeRef) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally( new IllegalStateException("Stream unavailable for session " + this.sessionId) ); return future; } @Override public CompletableFuture sendNotification(String method, Object params) { CompletableFuture future = new CompletableFuture<>(); future.completeExceptionally( new IllegalStateException("Stream unavailable for session " + this.sessionId) ); return future; } @Override public CompletableFuture closeGracefully() { return CompletableFuture.completedFuture(null); } @Override public void close() { // Nothing to close for a missing session } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/protocol/spec/ProtocolVersions.java ================================================ package com.taobao.arthas.mcp.server.protocol.spec; public interface ProtocolVersions { /** * MCP protocol version for 2024-11-05. * https://modelcontextprotocol.io/specification/2024-11-05 */ String MCP_2024_11_05 = "2024-11-05"; /** * MCP protocol version for 2025-03-26. * https://modelcontextprotocol.io/specification/2025-03-26 */ String MCP_2025_03_26 = "2025-03-26"; /** * MCP protocol version for 2025-06-18. * https://modelcontextprotocol.io/specification/2025-06-18 */ String MCP_2025_06_18 = "2025-06-18"; } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/session/ArthasCommandContext.java ================================================ package com.taobao.arthas.mcp.server.session; import com.taobao.arthas.mcp.server.CommandExecutor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.List; import java.util.Map; import java.util.Objects; import java.util.concurrent.CompletableFuture; import java.util.concurrent.CopyOnWriteArrayList; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; /** * Command execution context for MCP server. * Manages command execution lifecycle and result collection. */ public class ArthasCommandContext { private static final Logger logger = LoggerFactory.getLogger(ArthasCommandContext.class); private static final long DEFAULT_SYNC_TIMEOUT = 30000L; private final CommandExecutor commandExecutor; private final ArthasCommandSessionManager.CommandSessionBinding binding; private volatile boolean executionComplete = false; private final List results = new CopyOnWriteArrayList<>(); private final Lock resultLock = new ReentrantLock(); public ArthasCommandContext(CommandExecutor commandExecutor) { this.commandExecutor = Objects.requireNonNull(commandExecutor, "commandExecutor cannot be null"); this.binding = null; } public ArthasCommandContext(CommandExecutor commandExecutor, ArthasCommandSessionManager.CommandSessionBinding binding) { this.commandExecutor = Objects.requireNonNull(commandExecutor, "commandExecutor cannot be null"); this.binding = binding; } public CommandExecutor getCommandExecutor() { return commandExecutor; } public String getSessionId() { return binding != null ? binding.getArthasSessionId() : null; } /** * Alias for getSessionId() for compatibility */ public String getArthasSessionId() { requireSessionSupport(); return binding.getArthasSessionId(); } private void requireSessionSupport() { if (binding == null) { throw new IllegalStateException("Session-based operations are not supported in temporary mode. " + "Use ArthasCommandContext(CommandExecutor, CommandSessionBinding) constructor to enable session support."); } } public String getConsumerId() { return binding != null ? binding.getConsumerId() : null; } public ArthasCommandSessionManager.CommandSessionBinding getBinding() { return binding; } public boolean isExecutionComplete() { return executionComplete; } public void setExecutionComplete(boolean executionComplete) { this.executionComplete = executionComplete; } public void addResult(Object result) { results.add(result); } public List getResults() { return results; } public void clearResults() { results.clear(); } public Lock getResultLock() { return resultLock; } /** * Execute command synchronously with default timeout */ public Map executeSync(String commandLine) { return executeSync(commandLine, DEFAULT_SYNC_TIMEOUT); } /** * Execute command synchronously with specified timeout */ public Map executeSync(String commandLine, long timeout) { return commandExecutor.executeSync(commandLine, timeout); } /** * Execute command synchronously with auth subject */ public Map executeSync(String commandStr, Object authSubject) { return commandExecutor.executeSync(commandStr, DEFAULT_SYNC_TIMEOUT, null, authSubject, null); } /** * Execute command synchronously with auth subject and userId * * @param commandStr 命令行 * @param authSubject 认证主体 * @param userId 用户 ID，用于统计上报 * @return 执行结果 */ public Map executeSync(String commandStr, Object authSubject, String userId) { return commandExecutor.executeSync(commandStr, DEFAULT_SYNC_TIMEOUT, null, authSubject, userId); } /** * Execute command asynchronously */ public Map executeAsync(String commandLine) { requireSessionSupport(); return commandExecutor.executeAsync(commandLine, binding.getArthasSessionId()); } /** * Pull command execution results */ public Map pullResults() { requireSessionSupport(); return commandExecutor.pullResults(binding.getArthasSessionId(), binding.getConsumerId()); } /** * Interrupt the current job */ public Map interruptJob() { requireSessionSupport(); return commandExecutor.interruptJob(binding.getArthasSessionId()); } /** * Set session userId for statistics reporting * * @param userId 用户 ID */ public void setSessionUserId(String userId) { if (binding != null && userId != null) { commandExecutor.setSessionUserId(binding.getArthasSessionId(), userId); logger.debug("Set userId for session {}: {}", binding.getArthasSessionId(), userId); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/session/ArthasCommandSessionManager.java ================================================ package com.taobao.arthas.mcp.server.session; import com.taobao.arthas.mcp.server.CommandExecutor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.Map; import java.util.UUID; import java.util.concurrent.ConcurrentHashMap; /** * Manager for MCP-to-Command session bindings. * Handles the lifecycle of command sessions associated with MCP sessions. */ public class ArthasCommandSessionManager { private static final Logger logger = LoggerFactory.getLogger(ArthasCommandSessionManager.class); // Arthas 默认 session 超时时间是 30 分钟，这里设置一个稍短的时间作为预判断 // 如果距离上次访问超过这个时间，认为 session 可能已过期，主动重建 private static final long SESSION_EXPIRY_THRESHOLD_MS = 25 * 60 * 1000; // 25 分钟 private final CommandExecutor commandExecutor; private final ConcurrentHashMap sessionBindings = new ConcurrentHashMap<>(); public ArthasCommandSessionManager(CommandExecutor commandExecutor) { this.commandExecutor = commandExecutor; } public static class CommandSessionBinding { private final String mcpSessionId; private final String arthasSessionId; private final String consumerId; private final long createdTime; private volatile long lastAccessTime; public CommandSessionBinding(String mcpSessionId, String arthasSessionId, String consumerId) { this.mcpSessionId = mcpSessionId; this.arthasSessionId = arthasSessionId; this.consumerId = consumerId; this.createdTime = System.currentTimeMillis(); this.lastAccessTime = this.createdTime; } public String getMcpSessionId() { return mcpSessionId; } public String getArthasSessionId() { return arthasSessionId; } public String getConsumerId() { return consumerId; } public long getCreatedTime() { return createdTime; } public long getLastAccessTime() { return lastAccessTime; } public void updateAccessTime() { this.lastAccessTime = System.currentTimeMillis(); } } public CommandSessionBinding createCommandSession(String mcpSessionId) { Map result = commandExecutor.createSession(); CommandSessionBinding binding = new CommandSessionBinding( mcpSessionId, (String) result.get("sessionId"), (String) result.get("consumerId") ); return binding; } /** * 获取命令执行session，支持认证信息 * * @param mcpSessionId MCP session ID * @param authSubject 认证主体对象，可以为null * @return CommandSessionBinding */ public CommandSessionBinding getCommandSession(String mcpSessionId, Object authSubject) { CommandSessionBinding binding = sessionBindings.get(mcpSessionId); if (binding == null) { binding = createCommandSession(mcpSessionId); sessionBindings.put(mcpSessionId, binding); logger.debug("Created new command session: MCP={}, Arthas={}", mcpSessionId, binding.getArthasSessionId()); } else if (!isSessionValid(binding)) { logger.info("Session expired, recreating: MCP={}, Arthas={}", mcpSessionId, binding.getArthasSessionId()); try { commandExecutor.closeSession(binding.getArthasSessionId()); } catch (Exception e) { logger.debug("Failed to close expired session (may already be cleaned up): {}", e.getMessage()); } CommandSessionBinding newBinding = createCommandSession(mcpSessionId); sessionBindings.put(mcpSessionId, newBinding); logger.info("Recreated command session: MCP={}, Old Arthas={}, New Arthas={}", mcpSessionId, binding.getArthasSessionId(), newBinding.getArthasSessionId()); binding = newBinding; } else { logger.debug("Using existing valid session: MCP={}, Arthas={}", mcpSessionId, binding.getArthasSessionId()); } binding.updateAccessTime(); if (authSubject != null) { try { commandExecutor.setSessionAuth(binding.getArthasSessionId(), authSubject); logger.debug("Applied auth to Arthas session: MCP={}, Arthas={}", mcpSessionId, binding.getArthasSessionId()); } catch (Exception e) { logger.warn("Failed to apply auth to session: MCP={}, Arthas={}, error={}", mcpSessionId, binding.getArthasSessionId(), e.getMessage()); } } return binding; } /** * 检查session是否有效 * 通过尝试获取结果来验证session和consumer是否仍然存在 */ private boolean isSessionValid(CommandSessionBinding binding) { long timeSinceLastAccess = System.currentTimeMillis() - binding.getLastAccessTime(); if (timeSinceLastAccess > SESSION_EXPIRY_THRESHOLD_MS) { logger.debug("Session possibly expired (inactive for {} ms): MCP={}, Arthas={}", timeSinceLastAccess, binding.getMcpSessionId(), binding.getArthasSessionId()); return false; } return true; } public void closeCommandSession(String mcpSessionId) { CommandSessionBinding binding = sessionBindings.remove(mcpSessionId); if (binding != null) { commandExecutor.closeSession(binding.getArthasSessionId()); logger.debug("Closed command session: MCP={}, Arthas={}", mcpSessionId, binding.getArthasSessionId()); } } public void closeAllSessions() { sessionBindings.keySet().forEach(this::closeCommandSession); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/DefaultToolCallback.java ================================================ package com.taobao.arthas.mcp.server.tool; import com.fasterxml.jackson.core.type.TypeReference; import com.taobao.arthas.mcp.server.tool.definition.ToolDefinition; import com.taobao.arthas.mcp.server.tool.execution.ToolCallResultConverter; import com.taobao.arthas.mcp.server.tool.execution.ToolExecutionException; import com.taobao.arthas.mcp.server.util.Assert; import com.taobao.arthas.mcp.server.util.JsonParser; import com.taobao.arthas.mcp.server.util.Utils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.lang.reflect.Parameter; import java.lang.reflect.Type; import java.util.Arrays; import java.util.Map; import java.util.stream.Stream; import com.taobao.arthas.mcp.server.tool.annotation.ToolParam; public class DefaultToolCallback implements ToolCallback { private static final Logger logger = LoggerFactory.getLogger(DefaultToolCallback.class); private final ToolDefinition toolDefinition; private final Method toolMethod; private final Object toolObject; private final ToolCallResultConverter toolCallResultConverter; public DefaultToolCallback(ToolDefinition toolDefinition, Method toolMethod, Object toolObject, ToolCallResultConverter toolCallResultConverter) { Assert.notNull(toolDefinition, "toolDefinition cannot be null"); Assert.notNull(toolMethod, "toolMethod cannot be null"); Assert.isTrue(Modifier.isStatic(toolMethod.getModifiers()) || toolObject != null, "toolObject cannot be null for non-static methods"); this.toolDefinition = toolDefinition; this.toolMethod = toolMethod; this.toolObject = toolObject; this.toolCallResultConverter = toolCallResultConverter; } @Override public ToolDefinition getToolDefinition() { return this.toolDefinition; } @Override public String call(String toolInput) { return call(toolInput, null); } @Override public String call(String toolInput, ToolContext toolContext) { Assert.hasText(toolInput, "toolInput cannot be null or empty"); logger.debug("Starting execution of tool: {}", this.toolDefinition.getName()); validateToolContextSupport(toolContext); Map toolArguments = extractToolArguments(toolInput); validateRequiredParameters(toolArguments); Object[] methodArguments = buildMethodArguments(toolArguments, toolContext); Object result = callMethod(methodArguments); logger.debug("Successful execution of tool: {}", this.toolDefinition.getName()); Type returnType = this.toolMethod.getGenericReturnType(); return this.toolCallResultConverter.convert(result, returnType); } private void validateToolContextSupport(ToolContext toolContext) { boolean isNonEmptyToolContextProvided = toolContext != null && !Utils.isEmpty(toolContext.getContext()); boolean isToolContextAcceptedByMethod = Arrays.stream(this.toolMethod.getParameterTypes()) .anyMatch(type -> Utils.isAssignable(type, ToolContext.class)); if (isToolContextAcceptedByMethod && !isNonEmptyToolContextProvided) { throw new IllegalArgumentException("ToolContext is required by the method as an argument"); } } /** * validate the required parameters */ private void validateRequiredParameters(Map toolArguments) { Parameter[] parameters = this.toolMethod.getParameters(); for (Parameter parameter : parameters) { if (parameter.getType().isAssignableFrom(ToolContext.class)) { continue; } ToolParam toolParam = parameter.getAnnotation(ToolParam.class); if (toolParam != null && toolParam.required()) { String paramName = parameter.getName(); Object paramValue = toolArguments.get(paramName); // check if the parameter is empty or an empty string if (paramValue == null) { throw new IllegalArgumentException("Required parameter '" + paramName + "' is missing"); } if (paramValue instanceof String && ((String) paramValue).trim().isEmpty()) { throw new IllegalArgumentException("Required parameter '" + paramName + "' cannot be empty"); } } } } private Map extractToolArguments(String toolInput) { return JsonParser.fromJson(toolInput, new TypeReference>() { }); } private Object[] buildMethodArguments(Map toolInputArguments, ToolContext toolContext) { return Stream.of(this.toolMethod.getParameters()).map(parameter -> { if (parameter.getType().isAssignableFrom(ToolContext.class)) { return toolContext; } Object rawArgument = toolInputArguments.get(parameter.getName()); return buildTypedArgument(rawArgument, parameter.getParameterizedType()); }).toArray(); } private Object buildTypedArgument(Object value, Type type) { if (value == null) { return null; } if (type instanceof Class) { return JsonParser.toTypedObject(value, (Class) type); } String json = JsonParser.toJson(value); return JsonParser.fromJson(json, type); } private Object callMethod(Object[] methodArguments) { if (isObjectNotPublic() || isMethodNotPublic()) { this.toolMethod.setAccessible(true); } Object result; try { result = this.toolMethod.invoke(this.toolObject, methodArguments); } catch (IllegalAccessException ex) { throw new IllegalStateException("Could not access method: " + ex.getMessage(), ex); } catch (InvocationTargetException ex) { throw new ToolExecutionException(this.toolDefinition, ex.getCause()); } return result; } private boolean isObjectNotPublic() { return this.toolObject != null && !Modifier.isPublic(this.toolObject.getClass().getModifiers()); } private boolean isMethodNotPublic() { return !Modifier.isPublic(this.toolMethod.getModifiers()); } @Override public String toString() { return "MethodToolCallback{" + "toolDefinition=" + this.toolDefinition + '}'; } public static Builder builder() { return new Builder(); } public static final class Builder { private ToolDefinition toolDefinition; private Method toolMethod; private Object toolObject; private ToolCallResultConverter toolCallResultConverter; private Builder() { } public Builder toolDefinition(ToolDefinition toolDefinition) { this.toolDefinition = toolDefinition; return this; } public Builder toolMethod(Method toolMethod) { this.toolMethod = toolMethod; return this; } public Builder toolObject(Object toolObject) { this.toolObject = toolObject; return this; } public Builder toolCallResultConverter(ToolCallResultConverter toolCallResultConverter) { this.toolCallResultConverter = toolCallResultConverter; return this; } public DefaultToolCallback build() { return new DefaultToolCallback(this.toolDefinition, this.toolMethod, this.toolObject, this.toolCallResultConverter); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/DefaultToolCallbackProvider.java ================================================ package com.taobao.arthas.mcp.server.tool; import com.taobao.arthas.mcp.server.tool.annotation.Tool; import com.taobao.arthas.mcp.server.tool.definition.ToolDefinition; import com.taobao.arthas.mcp.server.tool.definition.ToolDefinitions; import com.taobao.arthas.mcp.server.tool.execution.DefaultToolCallResultConverter; import com.taobao.arthas.mcp.server.tool.execution.ToolCallResultConverter; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.File; import java.io.IOException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.net.JarURLConnection; import java.net.URL; import java.net.URLDecoder; import java.nio.charset.StandardCharsets; import java.util.ArrayList; import java.util.Enumeration; import java.util.List; import java.util.jar.JarEntry; import java.util.jar.JarFile; /** * Default tool callback provider implementation *

* Scan methods with @Tool annotations in the classpath and register them as tool callbacks. *

* Users must call {@link #setToolBasePackage(String)} to configure the package to scan before calling * {@link #getToolCallbacks()}. */ public class DefaultToolCallbackProvider implements ToolCallbackProvider { private static final Logger logger = LoggerFactory.getLogger(DefaultToolCallbackProvider.class); private final ToolCallResultConverter toolCallResultConverter; private ToolCallback[] toolCallbacks; private String toolBasePackage; public DefaultToolCallbackProvider() { this.toolCallResultConverter = new DefaultToolCallResultConverter(); } public void setToolBasePackage(String toolBasePackage) { this.toolBasePackage = toolBasePackage; } @Override public ToolCallback[] getToolCallbacks() { if (toolCallbacks == null) { synchronized (this) { if (toolCallbacks == null) { toolCallbacks = scanForToolCallbacks(); } } } return toolCallbacks; } private ToolCallback[] scanForToolCallbacks() { List callbacks = new ArrayList<>(); try { logger.info("Starting to scan for tool callbacks in package: {}", toolBasePackage); scanPackageForToolMethods(toolBasePackage, callbacks); logger.info("Found {} tool callbacks", callbacks.size()); } catch (Exception e) { logger.error("Failed to scan for tool callbacks: {}", e.getMessage(), e); } return callbacks.toArray(new ToolCallback[0]); } private void scanPackageForToolMethods(String packageName, List callbacks) throws IOException { String packageDirName = packageName.replace('.', '/'); ClassLoader classLoader = DefaultToolCallbackProvider.class.getClassLoader(); logger.info("Using classloader: {} for scanning package: {}", classLoader, packageName); Enumeration resources = classLoader.getResources(packageDirName); if (!resources.hasMoreElements()) { logger.warn("No resources found for package: {}", packageName); return; } while (resources.hasMoreElements()) { URL resource = resources.nextElement(); String protocol = resource.getProtocol(); logger.info("Found resource: {} with protocol: {}", resource, protocol); if ("file".equals(protocol)) { String filePath = URLDecoder.decode(resource.getFile(), StandardCharsets.UTF_8.name()); logger.info("Scanning directory: {}", filePath); scanDirectory(new File(filePath), packageName, callbacks); } else if ("jar".equals(protocol)) { JarURLConnection jarConn = (JarURLConnection) resource.openConnection(); try (JarFile jarFile = jarConn.getJarFile()) { logger.info("Scanning jar file: {}", jarFile.getName()); scanJarEntries(jarFile, packageDirName, callbacks); } } else { logger.warn("Unsupported protocol: {} for resource: {}", protocol, resource); } } } private void scanDirectory(File directory, String packageName, List callbacks) { if (!directory.exists() || !directory.isDirectory()) { logger.warn("Directory does not exist or is not a directory: {}", directory); return; } File[] files = directory.listFiles(); if (files == null) { logger.warn("Failed to list files in directory: {}", directory); return; } for (File file : files) { if (file.isDirectory()) { scanDirectory(file, packageName + "." + file.getName(), callbacks); } else if (file.getName().endsWith(".class")) { String className = packageName + "." + file.getName().substring(0, file.getName().length() - 6); logger.debug("Processing class: {}", className); processClass(className, callbacks); } } } private void scanJarEntries(JarFile jarFile, String packageDirName, List callbacks) { Enumeration entries = jarFile.entries(); while (entries.hasMoreElements()) { JarEntry entry = entries.nextElement(); String name = entry.getName(); if (name.startsWith(packageDirName) && name.endsWith(".class")) { String className = name.substring(0, name.length() - 6).replace('/', '.'); logger.debug("Processing jar entry: {}", className); processClass(className, callbacks); } } } private void processClass(String className, List callbacks) { try { Class clazz = Class.forName(className, false, DefaultToolCallbackProvider.class.getClassLoader()); if (clazz.isInterface() || clazz.isEnum() || clazz.isAnnotation()) { return; } for (Method method : clazz.getDeclaredMethods()) { if (method.isAnnotationPresent(Tool.class)) { registerToolMethod(clazz, method, callbacks); } } } catch (Throwable t) { logger.warn("Error loading class {}: {}", className, t.getMessage(), t); } } private void registerToolMethod(Class clazz, Method method, List callbacks) { try { ToolDefinition toolDefinition = ToolDefinitions.from(method); Object toolObject = Modifier.isStatic(method.getModifiers()) ? null : clazz.getDeclaredConstructor().newInstance(); ToolCallback callback = DefaultToolCallback.builder() .toolDefinition(toolDefinition) .toolMethod(method) .toolObject(toolObject) .toolCallResultConverter(toolCallResultConverter) .build(); callbacks.add(callback); logger.info("Registered tool: {} from class: {}", toolDefinition.getName(), clazz.getName()); } catch (Exception e) { logger.error("Failed to register tool {}.{}, error: {}", clazz.getName(), method.getName(), e.getMessage(), e); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/ToolCallback.java ================================================ package com.taobao.arthas.mcp.server.tool; import com.taobao.arthas.mcp.server.tool.definition.ToolDefinition; /** * Define the basic behavior of the tool */ public interface ToolCallback { ToolDefinition getToolDefinition(); String call(String toolInput); String call(String toolInput, ToolContext toolContext); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/ToolCallbackProvider.java ================================================ package com.taobao.arthas.mcp.server.tool; public interface ToolCallbackProvider { ToolCallback[] getToolCallbacks(); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/ToolContext.java ================================================ package com.taobao.arthas.mcp.server.tool; import java.util.Collections; import java.util.Map; public final class ToolContext { private final Map context; public ToolContext(Map context) { this.context = Collections.unmodifiableMap(context); } public Map getContext() { return this.context; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/annotation/Tool.java ================================================ package com.taobao.arthas.mcp.server.tool.annotation; import java.lang.annotation.*; @Target({ ElementType.METHOD, ElementType.ANNOTATION_TYPE }) @Retention(RetentionPolicy.RUNTIME) @Documented public @interface Tool { String name() default ""; String description() default ""; boolean streamable() default false; } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/annotation/ToolParam.java ================================================ package com.taobao.arthas.mcp.server.tool.annotation; import java.lang.annotation.*; @Target({ ElementType.PARAMETER, ElementType.FIELD, ElementType.ANNOTATION_TYPE }) @Retention(RetentionPolicy.RUNTIME) @Documented public @interface ToolParam { /** * Whether the tool argument is required. */ boolean required() default true; /** * The description of the tool argument. */ String description() default ""; } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/definition/ToolDefinition.java ================================================ package com.taobao.arthas.mcp.server.tool.definition; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; public class ToolDefinition { private String name; private String description; private McpSchema.JsonSchema inputSchema; private boolean streamable; public ToolDefinition(String name, String description, McpSchema.JsonSchema inputSchema, boolean streamable) { this.name = name; this.description = description; this.inputSchema = inputSchema; this.streamable = streamable; } public String getName() { return name; } public String getDescription() { return description; } public McpSchema.JsonSchema getInputSchema() { return inputSchema; } public boolean isStreamable() { return streamable; } public static Builder builder() { return new Builder(); } public static final class Builder { private String name; private String description; private McpSchema.JsonSchema inputSchema; private boolean streamable; private Builder() { } public Builder name(String name) { this.name = name; return this; } public Builder description(String description) { this.description = description; return this; } public Builder inputSchema(McpSchema.JsonSchema inputSchema) { this.inputSchema = inputSchema; return this; } public Builder streamable(boolean streamable) { this.streamable = streamable; return this; } public ToolDefinition build() { return new ToolDefinition(this.name, this.description, this.inputSchema, this.streamable); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/definition/ToolDefinitions.java ================================================ package com.taobao.arthas.mcp.server.tool.definition; import com.taobao.arthas.mcp.server.tool.annotation.Tool; import com.taobao.arthas.mcp.server.tool.util.JsonSchemaGenerator; import com.taobao.arthas.mcp.server.util.Assert; import java.lang.reflect.Method; public class ToolDefinitions { public static ToolDefinition.Builder builder(Method method) { Assert.notNull(method, "method cannot be null"); return ToolDefinition.builder() .name(getToolName(method)) .description(getToolDescription(method)) .inputSchema(JsonSchemaGenerator.generateForMethodInput(method)) .streamable(isStreamable(method)); } public static ToolDefinition from(Method method) { return builder(method).build(); } public static String getToolName(Method method) { Assert.notNull(method, "method cannot be null"); Tool tool = method.getAnnotation(Tool.class); if (tool == null) { return method.getName(); } return tool.name() != null ? tool.name() : method.getName(); } public static String getToolDescription(Method method) { Assert.notNull(method, "method cannot be null"); Tool tool = method.getAnnotation(Tool.class); if (tool == null) { return method.getName(); } return tool.description() != null ? tool.description() : method.getName(); } public static boolean isStreamable(Method method) { Assert.notNull(method, "method cannot be null"); Tool tool = method.getAnnotation(Tool.class); if (tool == null) { return false; } return tool.streamable(); } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/execution/DefaultToolCallResultConverter.java ================================================ package com.taobao.arthas.mcp.server.tool.execution; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.taobao.arthas.mcp.server.util.JsonParser; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.imageio.ImageIO; import java.awt.image.RenderedImage; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.lang.reflect.Type; import java.util.Base64; import java.util.HashMap; import java.util.Map; /** * A default implementation of {@link ToolCallResultConverter}. */ public final class DefaultToolCallResultConverter implements ToolCallResultConverter { private static final Logger logger = LoggerFactory.getLogger(DefaultToolCallResultConverter.class); private static final ObjectMapper OBJECT_MAPPER = JsonParser.getObjectMapper(); @Override public String convert(Object result, Type returnType) { if (returnType == Void.TYPE) { logger.debug("The tool has no return type. Converting to conventional response."); return JsonParser.toJson("Done"); } if (result instanceof RenderedImage) { final ByteArrayOutputStream buf = new ByteArrayOutputStream(1024 * 4); try { ImageIO.write((RenderedImage) result, "PNG", buf); } catch (IOException e) { return "Failed to convert tool result to a base64 image: " + e.getMessage(); } final String imgB64 = Base64.getEncoder().encodeToString(buf.toByteArray()); Map imageData = new HashMap<>(); imageData.put("mimeType", "image/png"); imageData.put("data", imgB64); return JsonParser.toJson(imageData); } else if (result instanceof String) { String stringResult = (String) result; if (isValidJson(stringResult)) { logger.debug("Result is already valid JSON, returning as is."); return stringResult; } else { logger.debug("Converting string result to JSON."); return JsonParser.toJson(result); } } else { logger.debug("Converting tool result to JSON."); return JsonParser.toJson(result); } } private boolean isValidJson(String jsonString) { if (jsonString == null || jsonString.trim().isEmpty()) { return false; } try { OBJECT_MAPPER.readTree(jsonString); return true; } catch (JsonProcessingException e) { return false; } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/execution/DefaultToolExecutionExceptionProcessor.java ================================================ package com.taobao.arthas.mcp.server.tool.execution; import com.taobao.arthas.mcp.server.util.Assert; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Default implementation of {@link ToolExecutionExceptionProcessor}. */ public class DefaultToolExecutionExceptionProcessor implements ToolExecutionExceptionProcessor { private final static Logger logger = LoggerFactory.getLogger(DefaultToolExecutionExceptionProcessor.class); private static final boolean DEFAULT_ALWAYS_THROW = false; private final boolean alwaysThrow; public DefaultToolExecutionExceptionProcessor(boolean alwaysThrow) { this.alwaysThrow = alwaysThrow; } @Override public String process(ToolExecutionException exception) { Assert.notNull(exception, "exception cannot be null"); if (this.alwaysThrow) { throw exception; } logger.debug("Exception thrown by tool: {}. Message: {}", exception.getToolDefinition().getName(), exception.getMessage()); return exception.getMessage(); } public static Builder builder() { return new Builder(); } public static class Builder { private boolean alwaysThrow = DEFAULT_ALWAYS_THROW; public Builder alwaysThrow(boolean alwaysThrow) { this.alwaysThrow = alwaysThrow; return this; } public DefaultToolExecutionExceptionProcessor build() { return new DefaultToolExecutionExceptionProcessor(this.alwaysThrow); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/execution/ToolCallResultConverter.java ================================================ package com.taobao.arthas.mcp.server.tool.execution; import java.lang.reflect.Type; /** * A functional interface to convert tool call results to a String that can be sent back * to the AI model. */ @FunctionalInterface public interface ToolCallResultConverter { /** * Given an Object returned by a tool, convert it to a String compatible with the * given class type. */ String convert(Object result, Type returnType); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/execution/ToolExecutionException.java ================================================ package com.taobao.arthas.mcp.server.tool.execution; import com.taobao.arthas.mcp.server.tool.definition.ToolDefinition; /** * An exception thrown when a tool execution fails. */ public class ToolExecutionException extends RuntimeException { private final ToolDefinition toolDefinition; public ToolExecutionException(ToolDefinition toolDefinition, Throwable cause) { super(cause.getMessage(), cause); this.toolDefinition = toolDefinition; } public ToolDefinition getToolDefinition() { return this.toolDefinition; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/execution/ToolExecutionExceptionProcessor.java ================================================ package com.taobao.arthas.mcp.server.tool.execution; /** * A functional interface to process a {@link ToolExecutionException} by either converting * the error message to a String that can be sent back to the AI model or throwing an * exception to be handled by the caller. */ @FunctionalInterface public interface ToolExecutionExceptionProcessor { /** * Convert an exception thrown by a tool to a String that can be sent back to the AI * model or throw an exception to be handled by the caller. */ String process(ToolExecutionException exception); } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/tool/util/JsonSchemaGenerator.java ================================================ package com.taobao.arthas.mcp.server.tool.util; import com.fasterxml.jackson.annotation.JsonProperty; import com.fasterxml.jackson.annotation.JsonPropertyDescription; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ArrayNode; import com.fasterxml.jackson.databind.node.ObjectNode; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.tool.annotation.ToolParam; import com.taobao.arthas.mcp.server.util.Assert; import java.lang.reflect.Method; import java.lang.reflect.Parameter; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * Simple JsonSchema generator * JsonSchema definitions for generating method parameters */ public final class JsonSchemaGenerator { private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper(); private static final boolean PROPERTY_REQUIRED_BY_DEFAULT = true; private JsonSchemaGenerator() { } /** * Generate JsonSchema for method parameters * @param method target method * @return JsonSchema object */ public static McpSchema.JsonSchema generateForMethodInput(Method method) { Assert.notNull(method, "method cannot be null"); ObjectNode schema = OBJECT_MAPPER.createObjectNode(); schema.put("type", "object"); ObjectNode properties = schema.putObject("properties"); List required = new ArrayList<>(); Parameter[] parameters = method.getParameters(); for (Parameter parameter : parameters) { ToolParam toolParam = parameter.getAnnotation(ToolParam.class); if (toolParam == null) { continue; } String paramName = getParameterName(parameter); Class paramType = parameter.getType(); boolean isRequired = isParameterRequired(parameter); if (isRequired) { required.add(paramName); } ObjectNode paramProperties = generateParameterProperties(paramType); String description = getParameterDescription(parameter); if (description != null) { paramProperties.put("description", description); } properties.set(paramName, paramProperties); } if (!required.isEmpty()) { ArrayNode requiredArray = schema.putArray("required"); for (String req : required) { requiredArray.add(req); } } schema.put("additionalProperties", false); return new McpSchema.JsonSchema("object", convertToMap(properties), required, false); } private static String getParameterName(Parameter parameter) { JsonProperty jsonProperty = parameter.getAnnotation(JsonProperty.class); if (jsonProperty != null && !jsonProperty.value().isEmpty()) { return jsonProperty.value(); } return parameter.getName(); } private static ObjectNode generateParameterProperties(Class paramType) { ObjectNode properties = OBJECT_MAPPER.createObjectNode(); if (paramType == String.class) { properties.put("type", "string"); } else if (paramType == int.class || paramType == Integer.class || paramType == long.class || paramType == Long.class) { properties.put("type", "integer"); } else if (paramType == double.class || paramType == Double.class || paramType == float.class || paramType == Float.class) { properties.put("type", "number"); } else if (paramType == boolean.class || paramType == Boolean.class) { properties.put("type", "boolean"); } else if (paramType.isArray()) { properties.put("type", "array"); ObjectNode items = properties.putObject("items"); Class componentType = paramType.getComponentType(); if (componentType == String.class) { items.put("type", "string"); } else if (componentType == int.class || componentType == Integer.class || componentType == long.class || componentType == Long.class) { items.put("type", "integer"); } else if (componentType == double.class || componentType == Double.class || componentType == float.class || componentType == Float.class) { items.put("type", "number"); } else if (componentType == boolean.class || componentType == Boolean.class) { items.put("type", "boolean"); } else { items.put("type", "object"); } } else { properties.put("type", "object"); } return properties; } private static boolean isParameterRequired(Parameter parameter) { ToolParam toolParam = parameter.getAnnotation(ToolParam.class); if (toolParam != null) { return toolParam.required(); } JsonProperty jsonProperty = parameter.getAnnotation(JsonProperty.class); if (jsonProperty != null) { return jsonProperty.required(); } return PROPERTY_REQUIRED_BY_DEFAULT; } private static String getParameterDescription(Parameter parameter) { ToolParam toolParam = parameter.getAnnotation(ToolParam.class); if (toolParam != null && toolParam.description() != null && !toolParam.description().isEmpty()) { return toolParam.description(); } JsonPropertyDescription jsonPropertyDescription = parameter.getAnnotation(JsonPropertyDescription.class); if (jsonPropertyDescription != null && !jsonPropertyDescription.value().isEmpty()) { return jsonPropertyDescription.value(); } return null; } private static Map convertToMap(ObjectNode node) { Map result = new HashMap<>(); node.fields().forEachRemaining(entry -> { JsonNode value = entry.getValue(); if (value.isObject()) { result.put(entry.getKey(), convertToMap((ObjectNode) value)); } else if (value.isArray()) { List array = new ArrayList<>(); value.elements().forEachRemaining(element -> { if (element.isObject()) { array.add(convertToMap((ObjectNode) element)); } else { array.add(element.asText()); } }); result.put(entry.getKey(), array); } else { result.put(entry.getKey(), value.asText()); } }); return result; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/util/Assert.java ================================================ package com.taobao.arthas.mcp.server.util; import java.util.Collection; import java.util.Map; /** * Assertion utility class for parameter validation. */ public final class Assert { private Assert() { } public static void notNull(Object object, String message) { if (object == null) { throw new IllegalArgumentException(message); } } public static void hasText(String text, String message) { if (text == null || text.trim().isEmpty()) { throw new IllegalArgumentException(message); } } public static void notEmpty(Collection collection, String message) { if (collection == null || collection.isEmpty()) { throw new IllegalArgumentException(message); } } public static void notEmpty(Map map, String message) { if (map == null || map.isEmpty()) { throw new IllegalArgumentException(message); } } public static void isTrue(boolean condition, String message) { if (!condition) { throw new IllegalArgumentException(message); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/util/JsonParser.java ================================================ package com.taobao.arthas.mcp.server.util; import com.alibaba.fastjson2.JSON; import com.alibaba.fastjson2.filter.ValueFilter; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationFeature; import com.fasterxml.jackson.databind.json.JsonMapper; import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.lang.reflect.Type; import java.math.BigDecimal; import java.util.concurrent.CopyOnWriteArrayList; import java.util.List; /** * Utilities to perform parsing operations between JSON and Java. */ public final class JsonParser { private static final Logger logger = LoggerFactory.getLogger(JsonParser.class); private static final ObjectMapper OBJECT_MAPPER = createObjectMapper(); private static final List JSON_FILTERS = new CopyOnWriteArrayList<>(); /** * Register a custom JSON value filter */ public static void registerFilter(ValueFilter filter) { if (filter != null) { JSON_FILTERS.add(filter); } } /** * Clear all registered filters */ public static void clearFilters() { JSON_FILTERS.clear(); } private static ObjectMapper createObjectMapper() { return JsonMapper.builder() .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES) .disable(SerializationFeature.FAIL_ON_EMPTY_BEANS) .addModule(new JavaTimeModule()) .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS) .build(); } private JsonParser() { } public static ObjectMapper getObjectMapper() { return OBJECT_MAPPER; } public static T fromJson(String json, Class type) { Assert.notNull(json, "json cannot be null"); Assert.notNull(type, "type cannot be null"); try { return JSON.parseObject(json, type); } catch (Exception ex) { try { return OBJECT_MAPPER.readValue(json, type); } catch (JsonProcessingException jacksonEx) { throw new IllegalStateException("Conversion from JSON to " + type.getName() + " failed", ex); } } } public static T fromJson(String json, Type type) { Assert.notNull(json, "json cannot be null"); Assert.notNull(type, "type cannot be null"); try { return JSON.parseObject(json, type); } catch (Exception ex) { try { return OBJECT_MAPPER.readValue(json, OBJECT_MAPPER.constructType(type)); } catch (JsonProcessingException jacksonEx) { throw new IllegalStateException("Conversion from JSON to " + type.getTypeName() + " failed", ex); } } } public static T fromJson(String json, TypeReference type) { Assert.notNull(json, "json cannot be null"); Assert.notNull(type, "type cannot be null"); try { return OBJECT_MAPPER.readValue(json, type); } catch (JsonProcessingException ex) { throw new IllegalStateException("Conversion from JSON to " + type.getType().getTypeName() + " failed", ex); } } /** * Converts a Java object to a JSON string. */ public static String toJson(Object object) { if (object == null) { return "null"; } try { String result; if (JSON_FILTERS.isEmpty()) { result = JSON.toJSONString(object); } else { result = JSON.toJSONString(object, JSON_FILTERS.toArray(new ValueFilter[0])); } return (result != null) ? result : "{}"; } catch (Exception ex) { logger.warn("FastJSON2 with MCP filter serialization failed for {}, falling back to Jackson: {}", object.getClass().getSimpleName(), ex.getMessage()); try { String result = OBJECT_MAPPER.writeValueAsString(object); return (result != null) ? result : "{}"; } catch (JsonProcessingException jacksonEx) { logger.error("Both FastJSON2 and Jackson serialization failed", ex); return "{\"error\":\"Serialization failed\"}"; } } } public static Object toTypedObject(Object value, Class type) { if (value == null) { throw new IllegalArgumentException("value cannot be null"); } if (type == null) { throw new IllegalArgumentException("type cannot be null"); } Class javaType = resolvePrimitiveIfNecessary(type); if (javaType == String.class) { return value.toString(); } else if (javaType == Byte.class) { return Byte.parseByte(value.toString()); } else if (javaType == Integer.class) { BigDecimal bigDecimal = new BigDecimal(value.toString()); return bigDecimal.intValueExact(); } else if (javaType == Short.class) { return Short.parseShort(value.toString()); } else if (javaType == Long.class) { BigDecimal bigDecimal = new BigDecimal(value.toString()); return bigDecimal.longValueExact(); } else if (javaType == Double.class) { return Double.parseDouble(value.toString()); } else if (javaType == Float.class) { return Float.parseFloat(value.toString()); } else if (javaType == Boolean.class) { return Boolean.parseBoolean(value.toString()); } else if (javaType == Character.class) { String s = value.toString(); if (s.length() == 1) { return s.charAt(0); } throw new IllegalArgumentException("Cannot convert to char: " + value); } else if (javaType.isEnum()) { @SuppressWarnings("unchecked") Class enumType = (Class) javaType; return Enum.valueOf(enumType, value.toString()); } String json = JsonParser.toJson(value); return JsonParser.fromJson(json, javaType); } public static Class resolvePrimitiveIfNecessary(Class type) { if (type.isPrimitive()) { return Utils.getWrapperClassForPrimitive(type); } return type; } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/util/KeepAliveScheduler.java ================================================ /** * Copyright 2025 - 2025 the original author or authors. */ package com.taobao.arthas.mcp.server.util; import com.fasterxml.jackson.core.type.TypeReference; import com.taobao.arthas.mcp.server.protocol.spec.McpSchema; import com.taobao.arthas.mcp.server.protocol.spec.McpSession; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.time.Duration; import java.util.Collection; import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.ScheduledFuture; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicBoolean; import java.util.function.Supplier; /** * A utility class for scheduling regular keep-alive calls to maintain connections. It * sends periodic keep-alive, ping, messages to connected mcp clients to prevent idle * timeouts. * * The pings are sent to all active mcp sessions at regular intervals. * */ public class KeepAliveScheduler { private static final Logger logger = LoggerFactory.getLogger(KeepAliveScheduler.class); private static final TypeReference OBJECT_TYPE_REF = new TypeReference() { }; /** Initial delay before the first keepAlive call */ private final Duration initialDelay; /** Interval between subsequent keepAlive calls */ private final Duration interval; /** The scheduler used for executing keepAlive calls */ private final ScheduledExecutorService scheduler; /** Whether this scheduler owns the executor and should shut it down */ private final boolean ownsExecutor; /** The current state of the scheduler */ private final AtomicBoolean isRunning = new AtomicBoolean(false); /** The current scheduled task */ private volatile ScheduledFuture currentTask; /** Supplier for McpSession instances */ private final Supplier> mcpSessions; /** * Creates a KeepAliveScheduler with a custom scheduler, initial delay, interval and a * supplier for McpSession instances. * @param scheduler The scheduler to use for executing keepAlive calls * @param ownsExecutor Whether this scheduler owns the executor and should shut it down * @param initialDelay Initial delay before the first keepAlive call * @param interval Interval between subsequent keepAlive calls * @param mcpSessions Supplier for McpSession instances */ private KeepAliveScheduler(ScheduledExecutorService scheduler, boolean ownsExecutor, Duration initialDelay, Duration interval, Supplier> mcpSessions) { this.scheduler = scheduler; this.ownsExecutor = ownsExecutor; this.initialDelay = initialDelay; this.interval = interval; this.mcpSessions = mcpSessions; } public static Builder builder(Supplier> mcpSessions) { return new Builder(mcpSessions); } /** * Starts regular keepAlive calls with sessions supplier. * @return This scheduler instance for method chaining */ public KeepAliveScheduler start() { if (this.isRunning.compareAndSet(false, true)) { logger.debug("Starting KeepAlive scheduler with initial delay: {}ms, interval: {}ms", initialDelay.toMillis(), interval.toMillis()); this.currentTask = this.scheduler.scheduleAtFixedRate( this::sendKeepAlivePings, this.initialDelay.toMillis(), this.interval.toMillis(), TimeUnit.MILLISECONDS ); return this; } else { throw new IllegalStateException("KeepAlive scheduler is already running. Stop it first."); } } /** * Sends keep-alive pings to all active sessions. */ private void sendKeepAlivePings() { try { Collection sessions = this.mcpSessions.get(); if (sessions == null || sessions.isEmpty()) { logger.trace("No active sessions to ping"); return; } logger.trace("Sending keep-alive pings to {} sessions", sessions.size()); for (McpSession session : sessions) { try { session.sendRequest(McpSchema.METHOD_PING, null, OBJECT_TYPE_REF) .whenComplete((result, error) -> { if (error != null) { logger.warn("Failed to send keep-alive ping to session {}: {}", session, error.getMessage()); } else { logger.trace("Keep-alive ping sent successfully to session {}", session); } }); } catch (Exception e) { logger.warn("Exception while sending keep-alive ping to session {}: {}", session, e.getMessage()); } } } catch (Exception e) { logger.error("Error during keep-alive ping cycle", e); } } public void stop() { if (this.currentTask != null && !this.currentTask.isCancelled()) { this.currentTask.cancel(false); logger.debug("KeepAlive scheduler stopped"); } this.isRunning.set(false); } public boolean isRunning() { return this.isRunning.get(); } public void shutdown() { stop(); if (this.ownsExecutor && !this.scheduler.isShutdown()) { this.scheduler.shutdown(); try { if (!this.scheduler.awaitTermination(5, TimeUnit.SECONDS)) { this.scheduler.shutdownNow(); } } catch (InterruptedException e) { this.scheduler.shutdownNow(); Thread.currentThread().interrupt(); } logger.debug("KeepAlive scheduler executor shut down"); } } public static class Builder { private ScheduledExecutorService scheduler; private boolean ownsExecutor = false; private Duration initialDelay = Duration.ofSeconds(0); private Duration interval = Duration.ofSeconds(30); private Supplier> mcpSessions; Builder(Supplier> mcpSessions) { Assert.notNull(mcpSessions, "McpSessions supplier must not be null"); this.mcpSessions = mcpSessions; } public Builder scheduler(ScheduledExecutorService scheduler) { Assert.notNull(scheduler, "Scheduler must not be null"); this.scheduler = scheduler; this.ownsExecutor = false; return this; } public Builder initialDelay(Duration initialDelay) { Assert.notNull(initialDelay, "Initial delay must not be null"); this.initialDelay = initialDelay; return this; } public Builder interval(Duration interval) { Assert.notNull(interval, "Interval must not be null"); this.interval = interval; return this; } public KeepAliveScheduler build() { if (this.scheduler == null) { this.scheduler = Executors.newSingleThreadScheduledExecutor(r -> { Thread t = new Thread(r, "mcp-keep-alive-scheduler"); t.setDaemon(true); return t; }); this.ownsExecutor = true; } return new KeepAliveScheduler(scheduler, ownsExecutor, initialDelay, interval, mcpSessions); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/util/McpAuthExtractor.java ================================================ package com.taobao.arthas.mcp.server.util; import io.netty.channel.Channel; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.http.FullHttpRequest; import io.netty.util.AttributeKey; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Utility class for extracting authentication information from Netty context and HTTP headers. */ public class McpAuthExtractor { private static final Logger logger = LoggerFactory.getLogger(McpAuthExtractor.class); /** * String key for MCP transport context */ public static final String MCP_AUTH_SUBJECT_KEY = "mcp.auth.subject"; public static final String MCP_USER_ID_KEY = "mcp.user.id"; public static final String USER_ID_HEADER = "X-User-Id"; /** * AttributeKey for Netty channel */ public static final AttributeKey CHANNEL_AUTH_SUBJECT_KEY = AttributeKey.valueOf("mcp.auth.subject"); public static final AttributeKey CHANNEL_USER_ID_KEY = AttributeKey.valueOf("mcp.user.id"); public static final AttributeKey SUBJECT_ATTRIBUTE_KEY = AttributeKey.valueOf("arthas.auth.subject"); /** * Extract auth subject from ChannelHandlerContext */ public static Object extractAuthSubjectFromContext(ChannelHandlerContext ctx) { if (ctx == null || ctx.channel() == null) { return null; } try { Object subject = ctx.channel().attr(SUBJECT_ATTRIBUTE_KEY).get(); if (subject != null) { logger.debug("Extracted auth subject from channel context: {}", subject.getClass().getSimpleName()); return subject; } } catch (Exception e) { logger.debug("Failed to extract auth subject from context: {}", e.getMessage()); } return null; } /** * Extract user ID from HTTP request headers */ public static String extractUserIdFromRequest(FullHttpRequest request) { if (request == null) { return null; } String userId = request.headers().get(USER_ID_HEADER); if (userId != null && !userId.trim().isEmpty()) { logger.debug("Extracted userId from HTTP header {}: {}", USER_ID_HEADER, userId); return userId.trim(); } return null; } /** * Extract user ID from channel attributes */ public static String extractUserId(Channel channel) { if (channel == null) { return null; } return channel.attr(CHANNEL_USER_ID_KEY).get(); } /** * Set user ID to channel attributes */ public static void setUserId(Channel channel, String userId) { if (channel != null && userId != null) { channel.attr(CHANNEL_USER_ID_KEY).set(userId); } } /** * Extract auth subject from channel attributes */ public static Object extractAuthSubject(Channel channel) { if (channel == null) { return null; } return channel.attr(CHANNEL_AUTH_SUBJECT_KEY).get(); } /** * Set auth subject to channel attributes */ public static void setAuthSubject(Channel channel, Object subject) { if (channel != null && subject != null) { channel.attr(CHANNEL_AUTH_SUBJECT_KEY).set(subject); } } } ================================================ FILE: arthas-mcp-server/src/main/java/com/taobao/arthas/mcp/server/util/Utils.java ================================================ package com.taobao.arthas.mcp.server.util; import java.util.Collection; import java.util.Map; public final class Utils { public static boolean hasText(String str) { return str != null && !str.trim().isEmpty(); } public static boolean isEmpty(Collection collection) { return (collection == null || collection.isEmpty()); } public static boolean isEmpty(Map map) { return (map == null || map.isEmpty()); } public static boolean isAssignable(Class targetType, Class sourceType) { if (targetType == null || sourceType == null) { return false; } if (targetType.equals(sourceType)) { return true; } if (targetType.isAssignableFrom(sourceType)) { return true; } if (targetType.isPrimitive()) { Class resolvedPrimitive = getPrimitiveClassForWrapper(sourceType); return resolvedPrimitive != null && targetType.equals(resolvedPrimitive); } else if (sourceType.isPrimitive()) { Class resolvedWrapper = getWrapperClassForPrimitive(sourceType); return resolvedWrapper != null && targetType.equals(resolvedWrapper); } return false; } public static Class getPrimitiveClassForWrapper(Class wrapperClass) { if (Boolean.class.equals(wrapperClass)) return boolean.class; if (Byte.class.equals(wrapperClass)) return byte.class; if (Character.class.equals(wrapperClass)) return char.class; if (Double.class.equals(wrapperClass)) return double.class; if (Float.class.equals(wrapperClass)) return float.class; if (Integer.class.equals(wrapperClass)) return int.class; if (Long.class.equals(wrapperClass)) return long.class; if (Short.class.equals(wrapperClass)) return short.class; if (Void.class.equals(wrapperClass)) return void.class; return null; } public static Class getWrapperClassForPrimitive(Class primitiveClass) { if (boolean.class.equals(primitiveClass)) return Boolean.class; if (byte.class.equals(primitiveClass)) return Byte.class; if (char.class.equals(primitiveClass)) return Character.class; if (double.class.equals(primitiveClass)) return Double.class; if (float.class.equals(primitiveClass)) return Float.class; if (int.class.equals(primitiveClass)) return Integer.class; if (long.class.equals(primitiveClass)) return Long.class; if (short.class.equals(primitiveClass)) return Short.class; if (void.class.equals(primitiveClass)) return Void.class; return null; } } ================================================ FILE: arthas-model/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-model arthas-model Arthas command result models - pure data transfer objects https://github.com/alibaba/arthas arthas-model ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/CommandRequestModel.java ================================================ package com.taobao.arthas.core.command.model; /** * Command async exec process result, not the command exec result * @author gongdewei 2020/4/2 */ public class CommandRequestModel extends ResultModel { private String state; private String command; private String message; public CommandRequestModel() { } public CommandRequestModel(String command, String state) { this.command = command; this.state = state; } public CommandRequestModel(String command, String state, String message) { this.state = state; this.command = command; this.message = message; } public String getCommand() { return command; } public void setCommand(String command) { this.command = command; } public String getState() { return state; } public void setState(String state) { this.state = state; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } @Override public String getType() { return "command"; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/EnhancerAffectVO.java ================================================ package com.taobao.arthas.core.command.model; import java.util.List; /** * Class enhance affect vo - pure data transfer object * @author gongdewei 2020/6/22 */ public class EnhancerAffectVO { private long cost; private int methodCount; private int classCount; private long listenerId; private Throwable throwable; private List classDumpFiles; private List methods; private String overLimitMsg; public EnhancerAffectVO() { } public EnhancerAffectVO(long cost, int methodCount, int classCount, long listenerId) { this.cost = cost; this.methodCount = methodCount; this.classCount = classCount; this.listenerId = listenerId; } public long getCost() { return cost; } public void setCost(long cost) { this.cost = cost; } public int getClassCount() { return classCount; } public void setClassCount(int classCount) { this.classCount = classCount; } public int getMethodCount() { return methodCount; } public void setMethodCount(int methodCount) { this.methodCount = methodCount; } public long getListenerId() { return listenerId; } public void setListenerId(long listenerId) { this.listenerId = listenerId; } public Throwable getThrowable() { return throwable; } public void setThrowable(Throwable throwable) { this.throwable = throwable; } public List getClassDumpFiles() { return classDumpFiles; } public void setClassDumpFiles(List classDumpFiles) { this.classDumpFiles = classDumpFiles; } public List getMethods() { return methods; } public void setMethods(List methods) { this.methods = methods; } public void setOverLimitMsg(String overLimitMsg) { this.overLimitMsg = overLimitMsg; } public String getOverLimitMsg() { return overLimitMsg; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/EnhancerModel.java ================================================ package com.taobao.arthas.core.command.model; /** * Data model of EnhancerCommand * * @author gongdewei 2020/7/20 */ public class EnhancerModel extends ResultModel { private EnhancerAffectVO effect; private boolean success; private String message; public EnhancerModel() { } public EnhancerModel(EnhancerAffectVO effect, boolean success) { this.effect = effect; this.success = success; } public EnhancerModel(EnhancerAffectVO effect, boolean success, String message) { this.effect = effect; this.success = success; this.message = message; } @Override public String getType() { return "enhancer"; } public EnhancerAffectVO getEffect() { return effect; } public void setEffect(EnhancerAffectVO effect) { this.effect = effect; } public boolean isSuccess() { return success; } public void setSuccess(boolean success) { this.success = success; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/InputStatus.java ================================================ package com.taobao.arthas.core.command.model; /** * Command input status for webui * @author gongdewei 2020/4/14 */ public enum InputStatus { /** * Allow input new commands */ ALLOW_INPUT, /** * Allow interrupt running job */ ALLOW_INTERRUPT, /** * Disable input and interrupt */ DISABLED } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/InputStatusModel.java ================================================ package com.taobao.arthas.core.command.model; /** * Input status for webui * @author gongdewei 2020/4/14 */ public class InputStatusModel extends ResultModel { private InputStatus inputStatus; public InputStatusModel(InputStatus inputStatus) { this.inputStatus = inputStatus; } public InputStatus getInputStatus() { return inputStatus; } public void setInputStatus(InputStatus inputStatus) { this.inputStatus = inputStatus; } @Override public String getType() { return "input_status"; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/MessageModel.java ================================================ package com.taobao.arthas.core.command.model; /** * @author gongdewei 2020/4/2 */ public class MessageModel extends ResultModel { private String message; public MessageModel() { } public MessageModel(String message) { this.message = message; } public String getMessage() { return message; } @Override public String getType() { return "message"; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/ObjectVO.java ================================================ package com.taobao.arthas.core.command.model; /** * 
 * 包装一层，解决json输出问题
 * https://github.com/alibaba/arthas/issues/2261
 *
* * @author hengyunabc 2022-08-24 * */ public class ObjectVO { private Object object; private Integer expand; public ObjectVO(Object object, Integer expand) { this.object = object; this.expand = expand; } public static ObjectVO[] array(Object[] objects, Integer expand) { ObjectVO[] result = new ObjectVO[objects.length]; for (int i = 0; i < objects.length; ++i) { result[i] = new ObjectVO(objects[i], expand); } return result; } public int expandOrDefault() { if (expand != null) { return expand; } return 1; } public boolean needExpand() { return null != expand && expand > 0; } public Object getObject() { return object; } public void setObject(Object object) { this.object = object; } public Integer getExpand() { return expand; } public void setExpand(Integer expand) { this.expand = expand; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/ResultModel.java ================================================ package com.taobao.arthas.core.command.model; /** * Command execute result * * @author gongdewei 2020-03-26 */ public abstract class ResultModel { private int jobId; /** * Command type (name) * * @return */ public abstract String getType(); public int getJobId() { return jobId; } public void setJobId(int jobId) { this.jobId = jobId; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/SessionModel.java ================================================ package com.taobao.arthas.core.command.model; /** * Session command result model * * @author gongdewei 2020/03/27 */ public class SessionModel extends ResultModel { private long javaPid; private String sessionId; private String agentId; private String tunnelServer; private String statUrl; private String userId; private boolean tunnelConnected; @Override public String getType() { return "session"; } public long getJavaPid() { return javaPid; } public void setJavaPid(long javaPid) { this.javaPid = javaPid; } public String getSessionId() { return sessionId; } public void setSessionId(String sessionId) { this.sessionId = sessionId; } public String getAgentId() { return agentId; } public void setAgentId(String agentId) { this.agentId = agentId; } public String getTunnelServer() { return tunnelServer; } public void setTunnelServer(String tunnelServer) { this.tunnelServer = tunnelServer; } public String getStatUrl() { return statUrl; } public void setStatUrl(String statUrl) { this.statUrl = statUrl; } public boolean isTunnelConnected() { return tunnelConnected; } public void setTunnelConnected(boolean tunnelConnected) { this.tunnelConnected = tunnelConnected; } public String getUserId() { return userId; } public void setUserId(String userId) { this.userId = userId; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/StatusModel.java ================================================ package com.taobao.arthas.core.command.model; public class StatusModel extends ResultModel { private int statusCode; private String message; public StatusModel(int statusCode) { this.statusCode = statusCode; } public StatusModel(int statusCode, String message) { this.statusCode = statusCode; this.message = message; } public int getStatusCode() { return statusCode; } public String getMessage() { return message; } @Override public String getType() { return "status"; } } ================================================ FILE: arthas-model/src/main/java/com/taobao/arthas/core/command/model/WelcomeModel.java ================================================ package com.taobao.arthas.core.command.model; /** * @author gongdewei 2020/4/20 */ public class WelcomeModel extends ResultModel { private String pid; private String time; private String version; private String wiki; private String tutorials; private String mainClass; public WelcomeModel() { } @Override public String getType() { return "welcome"; } public String getPid() { return pid; } public void setPid(String pid) { this.pid = pid; } public String getTime() { return time; } public void setTime(String time) { this.time = time; } public String getVersion() { return version; } public void setVersion(String version) { this.version = version; } public String getWiki() { return wiki; } public void setWiki(String wiki) { this.wiki = wiki; } public String getTutorials() { return tutorials; } public void setTutorials(String tutorials) { this.tutorials = tutorials; } public String getMainClass() { return mainClass; } public void setMainClass(String mainClass) { this.mainClass = mainClass; } } ================================================ FILE: arthas-spring-boot-starter/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-spring-boot-starter jar ${project.artifactId} https://github.com/alibaba/arthas */pom.xml org.springframework.boot spring-boot-dependencies ${spring-boot.version} pom import com.taobao.arthas arthas-agent-attach ${project.version} com.taobao.arthas arthas-packaging ${project.version} org.springframework.boot spring-boot-starter-actuator provided true org.springframework.boot spring-boot-starter-web provided true org.springframework.boot spring-boot-configuration-processor true org.springframework.boot spring-boot-starter-test test jdk-lt-17 [1.8,17) arthas-spring-boot-starter-example/pom.xml maven-invoker-plugin ${maven-invoker-plugin.version} ${project.build.directory}/it src/it src/it/settings.xml ${project.build.directory}/local-repo ${skipTests} true setup verify ${it.pom.includes} integration-test install run ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot-starter-example/invoker.properties ================================================ # A comma or space separated list of goals/phases to execute, may # specify an empty list to execute the default goal of the IT project. # Environment variables used by maven plugins can be added here invoker.goals = clean spring-boot:run ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot-starter-example/pom.xml ================================================ 4.0.0 org.springframework.boot spring-boot-starter-parent @spring-boot.version@ com.example arthas-spring-boot-starter-example 0.0.1-SNAPSHOT arthas-spring-boot-starter-example Demo project for Spring Boot 1.8 @project.groupId@ @project.artifactId@ @project.version@ org.springframework.boot spring-boot-starter org.springframework.boot spring-boot-starter-test test org.junit.vintage junit-vintage-engine org.springframework.boot spring-boot-maven-plugin ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot-starter-example/src/main/java/com/example/arthasspringbootstarterexample/ArthasSpringBootStarterExampleApplication.java ================================================ package com.example.arthasspringbootstarterexample; import java.util.concurrent.TimeUnit; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class ArthasSpringBootStarterExampleApplication { public static void main(String[] args) throws InterruptedException { SpringApplication.run(ArthasSpringBootStarterExampleApplication.class, args); System.out.println("xxxxxxxxxxxxxxxxxx"); TimeUnit.SECONDS.sleep(3); System.exit(0); } } ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot-starter-example/src/main/resources/application.properties ================================================ ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot-starter-example/src/test/java/com/example/arthasspringbootstarterexample/ArthasSpringBootStarterExampleApplicationTests.java ================================================ package com.example.arthasspringbootstarterexample; import org.junit.jupiter.api.Test; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class ArthasSpringBootStarterExampleApplicationTests { @Test void contextLoads() { } } ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot-starter-example/verify.groovy ================================================ def file = new File(basedir, "build.log") return file.text.contains("Arthas agent start success.") ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot3-starter-example/invoker.properties ================================================ # A comma or space separated list of goals/phases to execute, may # specify an empty list to execute the default goal of the IT project. # Environment variables used by maven plugins can be added here invoker.goals = clean spring-boot:run ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot3-starter-example/pom.xml ================================================ 4.0.0 org.springframework.boot spring-boot-starter-parent @spring-boot3.version@ com.example arthas-spring-boot3-starter-example 0.0.1-SNAPSHOT arthas-spring-boot3-starter-example Demo project for Spring Boot 17 @project.groupId@ @project.artifactId@ @project.version@ org.springframework.boot spring-boot-starter org.springframework.boot spring-boot-starter-test test org.junit.vintage junit-vintage-engine org.springframework.boot spring-boot-maven-plugin ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot3-starter-example/src/main/java/com/example/arthasspringboot3starterexample/ArthasSpringBoot3StarterExampleApplication.java ================================================ package com.example.arthasspringboot3starterexample; import java.util.concurrent.TimeUnit; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class ArthasSpringBoot3StarterExampleApplication { public static void main(String[] args) throws InterruptedException { SpringApplication.run(ArthasSpringBoot3StarterExampleApplication.class, args); System.out.println("xxxxxxxxxxxxxxxxxx"); TimeUnit.SECONDS.sleep(3); System.exit(0); } } ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot3-starter-example/src/main/resources/application.properties ================================================ ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot3-starter-example/src/test/java/com/example/arthasspringboot3starterexample/ArthasSpringBoot3StarterExampleApplicationTests.java ================================================ package com.example.arthasspringbootstarterexample3; import org.junit.jupiter.api.Test; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class ArthasSpringBoot3StarterExampleApplicationTests { @Test void contextLoads() { } } ================================================ FILE: arthas-spring-boot-starter/src/it/arthas-spring-boot3-starter-example/verify.groovy ================================================ def file = new File(basedir, "build.log") return file.text.contains("Arthas agent start success.") ================================================ FILE: arthas-spring-boot-starter/src/it/settings.xml ================================================ it-repo true local.central @localRepositoryUrl@ true true local.central @localRepositoryUrl@ true true ================================================ FILE: arthas-spring-boot-starter/src/main/java/com/alibaba/arthas/spring/ArthasConfiguration.java ================================================ package com.alibaba.arthas.spring; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean; import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.core.env.ConfigurableEnvironment; import com.taobao.arthas.agent.attach.ArthasAgent; /** * * @author hengyunabc 2020-06-22 * */ @ConditionalOnProperty(name = "spring.arthas.enabled", matchIfMissing = true) @EnableConfigurationProperties({ ArthasProperties.class }) public class ArthasConfiguration { private static final Logger logger = LoggerFactory.getLogger(ArthasConfiguration.class); @Autowired ConfigurableEnvironment environment; /** * 
	 * 1. 提取所有以 arthas.* 开头的配置项，再统一转换为Arthas配置
	 * 2. 避免某些配置在新版本里支持，但在ArthasProperties里没有配置的情况。
	 *
*/ @ConfigurationProperties(prefix = "arthas") @ConditionalOnMissingBean(name="arthasConfigMap") @Bean public HashMap arthasConfigMap() { return new HashMap(); } @ConditionalOnMissingBean @Bean public ArthasAgent arthasAgent(@Autowired @Qualifier("arthasConfigMap") Map arthasConfigMap, @Autowired ArthasProperties arthasProperties) throws Throwable { arthasConfigMap = StringUtils.removeDashKey(arthasConfigMap); ArthasProperties.updateArthasConfigMapDefaultValue(arthasConfigMap); /** * @see org.springframework.boot.context.ContextIdApplicationContextInitializer#getApplicationId(ConfigurableEnvironment) */ String appName = environment.getProperty("spring.application.name"); if (arthasConfigMap.get("appName") == null && appName != null) { arthasConfigMap.put("appName", appName); } // 给配置全加上前缀 Map mapWithPrefix = new HashMap(arthasConfigMap.size()); for (Entry entry : arthasConfigMap.entrySet()) { mapWithPrefix.put("arthas." + entry.getKey(), entry.getValue()); } final ArthasAgent arthasAgent = new ArthasAgent(mapWithPrefix, arthasProperties.getHome(), arthasProperties.isSlientInit(), null); arthasAgent.init(); logger.info("Arthas agent start success."); return arthasAgent; } } ================================================ FILE: arthas-spring-boot-starter/src/main/java/com/alibaba/arthas/spring/ArthasProperties.java ================================================ package com.alibaba.arthas.spring; import java.util.Map; import org.springframework.boot.context.properties.ConfigurationProperties; /** * * @author hengyunabc 2020-06-23 * */ @ConfigurationProperties(prefix = "arthas") public class ArthasProperties { private String ip; private int telnetPort; private int httpPort; private String tunnelServer; private String agentId; private String appName; /** * report executed command */ private String statUrl; /** * session timeout seconds */ private long sessionTimeout; private String username; private String password; private String home; /** * when arthas agent init error will throw exception by default. */ private boolean slientInit = false; /** * disabled commands，default disable stop command */ private String disabledCommands; private static final String DEFAULT_DISABLEDCOMMANDS = "stop"; /** * 因为 arthasConfigMap 只注入了用户配置的值，没有默认值，因些统一处理补全 */ public static void updateArthasConfigMapDefaultValue(Map arthasConfigMap) { if (!arthasConfigMap.containsKey("disabledCommands")) { arthasConfigMap.put("disabledCommands", DEFAULT_DISABLEDCOMMANDS); } } public String getHome() { return home; } public void setHome(String home) { this.home = home; } public boolean isSlientInit() { return slientInit; } public void setSlientInit(boolean slientInit) { this.slientInit = slientInit; } public String getIp() { return ip; } public void setIp(String ip) { this.ip = ip; } public int getTelnetPort() { return telnetPort; } public void setTelnetPort(int telnetPort) { this.telnetPort = telnetPort; } public int getHttpPort() { return httpPort; } public void setHttpPort(int httpPort) { this.httpPort = httpPort; } public String getTunnelServer() { return tunnelServer; } public void setTunnelServer(String tunnelServer) { this.tunnelServer = tunnelServer; } public String getAgentId() { return agentId; } public void setAgentId(String agentId) { this.agentId = agentId; } public String getStatUrl() { return statUrl; } public void setStatUrl(String statUrl) { this.statUrl = statUrl; } public long getSessionTimeout() { return sessionTimeout; } public void setSessionTimeout(long sessionTimeout) { this.sessionTimeout = sessionTimeout; } public String getAppName() { return appName; } public void setAppName(String appName) { this.appName = appName; } public String getDisabledCommands() { return disabledCommands; } public void setDisabledCommands(String disabledCommands) { this.disabledCommands = disabledCommands; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } ================================================ FILE: arthas-spring-boot-starter/src/main/java/com/alibaba/arthas/spring/StringUtils.java ================================================ package com.alibaba.arthas.spring; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry; /** * * @author hengyunabc 2020-06-24 * */ public class StringUtils { public static Map removeDashKey(Map map) { Map result = new HashMap(map.size()); for (Entry entry : map.entrySet()) { String key = entry.getKey(); if (key.contains("-")) { StringBuilder sb = new StringBuilder(key.length()); for (int i = 0; i < key.length(); i++) { if (key.charAt(i) == '-' && (i + 1 < key.length()) && Character.isAlphabetic(key.charAt(i + 1))) { ++i; char upperChar = Character.toUpperCase(key.charAt(i)); sb.append(upperChar); } else { sb.append(key.charAt(i)); } } key = sb.toString(); } result.put(key, entry.getValue()); } return result; } } ================================================ FILE: arthas-spring-boot-starter/src/main/java/com/alibaba/arthas/spring/endpoints/ArthasEndPoint.java ================================================ package com.alibaba.arthas.spring.endpoints; import java.util.HashMap; import java.util.Map; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.actuate.endpoint.annotation.Endpoint; import org.springframework.boot.actuate.endpoint.annotation.ReadOperation; import com.taobao.arthas.agent.attach.ArthasAgent; /** * * @author hengyunabc 2020-06-24 * */ @Endpoint(id = "arthas") public class ArthasEndPoint { @Autowired(required = false) private ArthasAgent arthasAgent; @Autowired(required = false) private HashMap arthasConfigMap; @ReadOperation public Map invoke() { Map result = new HashMap(); if (arthasConfigMap != null) { result.put("arthasConfigMap", arthasConfigMap); } String errorMessage = arthasAgent.getErrorMessage(); if (errorMessage != null) { result.put("errorMessage", errorMessage); } return result; } } ================================================ FILE: arthas-spring-boot-starter/src/main/java/com/alibaba/arthas/spring/endpoints/ArthasEndPointAutoConfiguration.java ================================================ package com.alibaba.arthas.spring.endpoints; import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnAvailableEndpoint; import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean; import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; import org.springframework.context.annotation.Bean; /** * * @author hengyunabc 2020-06-24 * */ @ConditionalOnProperty(name = "spring.arthas.enabled", matchIfMissing = true) public class ArthasEndPointAutoConfiguration { @Bean @ConditionalOnMissingBean @ConditionalOnAvailableEndpoint public ArthasEndPoint arthasEndPoint() { return new ArthasEndPoint(); } } ================================================ FILE: arthas-spring-boot-starter/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports ================================================ com.alibaba.arthas.spring.ArthasConfiguration com.alibaba.arthas.spring.endpoints.ArthasEndPointAutoConfiguration ================================================ FILE: arthas-spring-boot-starter/src/main/resources/META-INF/spring.factories ================================================ org.springframework.boot.autoconfigure.EnableAutoConfiguration=\ com.alibaba.arthas.spring.ArthasConfiguration,\ com.alibaba.arthas.spring.endpoints.ArthasEndPointAutoConfiguration ================================================ FILE: arthas-spring-boot-starter/src/main/resources/META-INF/spring.provides ================================================ provides: arthas-spring-boot-starter ================================================ FILE: arthas-spring-boot-starter/src/test/java/com/alibaba/arthas/spring/StringUtilsTest.java ================================================ package com.alibaba.arthas.spring; import java.util.HashMap; import java.util.Map; import org.assertj.core.api.Assertions; import org.junit.jupiter.api.Test; /** * * @author hengyunabc 2020-06-24 * */ public class StringUtilsTest { @Test public void test() { Map map = new HashMap(); map.put("telnet-port", "" + 9999); map.put("aaa--bbb", "fff"); map.put("123", "123"); map.put("123-", "123"); map.put("123-abc", "123"); map.put("xxx-", "xxx"); map = StringUtils.removeDashKey(map); Assertions.assertThat(map).containsEntry("telnetPort", "" + 9999); Assertions.assertThat(map).containsEntry("aaa-Bbb", "fff"); Assertions.assertThat(map).containsEntry("123", "123"); Assertions.assertThat(map).containsEntry("123-", "123"); Assertions.assertThat(map).containsEntry("123Abc", "123"); Assertions.assertThat(map).containsEntry("xxx-", "xxx"); } } ================================================ FILE: arthas-vmtool/README.md ================================================ 注意： 修改`arthas-vmtool`相关代码后，打包结果需要手动复制到本仓库的 `lib/` 路径下，不会自动复制。 ================================================ FILE: arthas-vmtool/pom.xml ================================================ 4.0.0 arthas-all com.taobao.arthas ${revision} ../pom.xml arthas-vmtool arthas-vmtool https://github.com/alibaba/arthas macos-amd64 mac darwin -arch x86_64 -arch arm64 libArthasJniLibrary.dylib linux-amd64 linux amd64 linux -m64 libArthasJniLibrary-x64.so linux-aarch64 linux aarch64 linux -march=armv8-a libArthasJniLibrary-aarch64.so linux-${os.arch} linux !amd64 linux libArthasJniLibrary-${os.arch}.so windows windows win32 windows-32 windows x86 -m32 libArthasJniLibrary-x86.dll windows-amd64 windows amd64 -m64 libArthasJniLibrary-x64.dll org.codehaus.mojo native-maven-plugin 1.0-alpha-11 true arthas.VmTool ${os_name} src/main/native/src jni-library.cpp heap_analyzer.c generic-classic g++ -I${JAVA_HOME}/include -I${JAVA_HOME}/include/${os_name} -I${project.build.directory}/native/include ${os_arch_option} -fpic -shared -o target g++ ${os_arch_option} -fpic -shared -o -static-libstdc++ -static -o ${project.build.directory}/${lib_name} compile-and-link compile initialize compile link org.apache.maven.plugins maven-compiler-plugin -h ${project.build.directory}/native/include org.apache.maven.plugins maven-jar-plugin 2.4 org.codehaus.mojo native-maven-plugin 1.0-alpha-11 true arthas.VmTool src/main/native/src jni-library.cpp heap_analyzer.c generic-classic g++ -I${JAVA_HOME}/include -I${JAVA_HOME}/include/${os_name} -I${project.build.directory}/native/include ${os_arch_option} -fpic -shared -o target g++ ${os_arch_option} -fpic -shared -o ${project.build.directory}/${lib_name} compile-and-link compile initialize compile link com.taobao.arthas arthas-common ${project.version} org.junit.vintage junit-vintage-engine test org.junit.jupiter junit-jupiter test org.assertj assertj-core test ================================================ FILE: arthas-vmtool/src/main/java/arthas/VmTool.java ================================================ package arthas; import java.util.Map; /** * @author ZhangZiCheng 2021-02-12 * @author hengyunabc 2021-04-26 * @since 3.5.1 */ public class VmTool implements VmToolMXBean { /** * 不要修改jni-lib的名称 */ public final static String JNI_LIBRARY_NAME = "ArthasJniLibrary"; private static VmTool instance; private VmTool() { } public static VmTool getInstance() { return getInstance(null); } public static synchronized VmTool getInstance(String libPath) { if (instance != null) { return instance; } if (libPath == null) { System.loadLibrary(JNI_LIBRARY_NAME); } else { System.load(libPath); } instance = new VmTool(); return instance; } private static synchronized native void forceGc0(); /** * 获取某个class在jvm中当前所有存活实例 */ private static synchronized native T[] getInstances0(Class klass, int limit); /** * 统计某个class在jvm中当前所有存活实例的总占用内存，单位：Byte */ private static synchronized native long sumInstanceSize0(Class klass); /** * 获取某个实例的占用内存，单位：Byte */ private static native long getInstanceSize0(Object instance); /** * 统计某个class在jvm中当前所有存活实例的总个数 */ private static synchronized native long countInstances0(Class klass); /** * 获取所有已加载的类 * @param klass 这个参数必须是 Class.class * @return */ private static synchronized native Class[] getAllLoadedClasses0(Class klass); /** * 分析堆内存占用最大的对象与类。 */ private static synchronized native String heapAnalyze0(int classNum, int objectNum); /** * 分析指定类实例的引用回溯链。 */ private static synchronized native String referenceAnalyze0(Class klass, int objectNum, int backtraceNum); @Override public void forceGc() { forceGc0(); } @Override public void interruptSpecialThread(int threadId) { Map allThread = Thread.getAllStackTraces(); for (Map.Entry entry : allThread.entrySet()) { if (entry.getKey().getId() == threadId) { entry.getKey().interrupt(); return; } } } @Override public T[] getInstances(Class klass) { return getInstances0(klass, -1); } @Override public T[] getInstances(Class klass, int limit) { if (limit == 0) { throw new IllegalArgumentException("limit can not be 0"); } return getInstances0(klass, limit); } @Override public long sumInstanceSize(Class klass) { return sumInstanceSize0(klass); } @Override public long getInstanceSize(Object instance) { return getInstanceSize0(instance); } @Override public long countInstances(Class klass) { return countInstances0(klass); } @Override public Class[] getAllLoadedClasses() { return getAllLoadedClasses0(Class.class); } @Override public int mallocTrim() { return mallocTrim0(); } private static synchronized native int mallocTrim0(); @Override public boolean mallocStats() { return mallocStats0(); } private static synchronized native boolean mallocStats0(); @Override public String heapAnalyze(int classNum, int objectNum) { return heapAnalyze0(classNum, objectNum); } @Override public String referenceAnalyze(Class klass, int objectNum, int backtraceNum) { return referenceAnalyze0(klass, objectNum, backtraceNum); } } ================================================ FILE: arthas-vmtool/src/main/java/arthas/VmToolMXBean.java ================================================ package arthas; /** * VmTool interface for JMX server. How to register VmTool MBean: * * 
 * {@code
 *     ManagementFactory.getPlatformMBeanServer().registerMBean(
 *             VmTool.getInstance(),
 *             new ObjectName("arthas:type=VmTool")
 *     );
 * }
 *
* @author hengyunabc 2021-04-26 */ public interface VmToolMXBean { /** * https://docs.oracle.com/javase/8/docs/platform/jvmti/jvmti.html#ForceGarbageCollection */ public void forceGc(); /** * 打断指定线程 * * @param threadId 线程ID */ void interruptSpecialThread(int threadId); public T[] getInstances(Class klass); /** * 获取某个class在jvm中当前所有存活实例 * @param * @param klass * @param limit 如果小于 0 ，则不限制 * @return */ public T[] getInstances(Class klass, int limit); /** * 统计某个class在jvm中当前所有存活实例的总占用内存，单位：Byte */ public long sumInstanceSize(Class klass); /** * 获取某个实例的占用内存，单位：Byte */ public long getInstanceSize(Object instance); /** * 统计某个class在jvm中当前所有存活实例的总个数 */ public long countInstances(Class klass); /** * 获取所有已加载的类 */ public Class[] getAllLoadedClasses(); /** * glibc 释放空闲内存 */ public int mallocTrim(); /** * glibc 输出内存状态到应用的 stderr */ public boolean mallocStats(); /** * 分析堆内存占用最大的对象与类（从 GC Root 可达对象出发）。 * * @param classNum 需要展示的类数量 * @param objectNum 需要展示的对象数量 * @return 分析结果文本 */ public String heapAnalyze(int classNum, int objectNum); /** * 分析某个类的实例对象，并输出占用最大的若干对象及其引用回溯链（从对象回溯到 GC Root）。 * * @param klass 目标类 * @param objectNum 需要展示的对象数量 * @param backtraceNum 回溯层数，-1 表示一直回溯到 root，0 表示不输出引用链 * @return 分析结果文本 */ public String referenceAnalyze(Class klass, int objectNum, int backtraceNum); } ================================================ FILE: arthas-vmtool/src/main/java/arthas/package-info.java ================================================ package arthas; ================================================ FILE: arthas-vmtool/src/main/native/src/heap_analyzer.c ================================================ #include "heap_analyzer.h" #include #include #include #include #include /** * 设计说明（纯 C 实现）： * * - FollowReferences 的 heap_reference_callback 会被多次调用（同一对象可能被不同引用边命中） * - 为了“每个对象只统计一次”，需要对对象打 tag 做去重 * - Arthas 的 vmtool 其它功能也会使用 JVMTI tag；因此这里采用“带 magic + run_id 的数值 tag”，并在结束后恢复原 tag，避免冲突 * - class_tag 参数来自“对象所属的 java.lang.Class 对象的 tag”，所以遍历前需要先给所有已加载类的 Class 对象打上 class tag（同样会恢复） * - 为了不破坏 class_tag 映射，遍历过程中不会覆盖 Class 对象的 tag；对 Class 对象去重使用额外数组标记 */ #define HEAP_TAG_MAGIC 0xA7A5 #define HEAP_TAG_MAGIC_SHIFT 48 #define HEAP_TAG_RUN_SHIFT 32 #define HEAP_TAG_TYPE_SHIFT 30 #define HEAP_TAG_MAGIC_MASK ((jlong)0xFFFF000000000000LL) #define HEAP_TAG_RUN_MASK ((jlong)0x0000FFFF00000000LL) #define HEAP_TAG_TYPE_MASK ((jlong)0x00000000C0000000LL) #define HEAP_TAG_ID_MASK ((jlong)0x000000003FFFFFFFLL) #define HEAP_TAG_TYPE_CLASS 0 #define HEAP_TAG_TYPE_OBJECT 1 static jlong g_heap_analyzer_run_counter = 0; #ifdef __cplusplus #define JVMTI_CALL(jvmti, func, ...) \ ((jvmti)->functions->func((jvmti), __VA_ARGS__)) #else #define JVMTI_CALL(jvmti, func, ...) \ ((*(jvmti))->func((jvmti), __VA_ARGS__)) #endif typedef struct { char *name; jlong instance_count; jlong total_size; } class_info_t; typedef struct { jlong original_tag; jlong referrer_tag; jlong size; jint class_id; jmethodID root_method; unsigned char has_root_method; } object_entry_t; typedef struct { jlong size; jlong tag; jint class_id; } top_object_t; typedef struct { char *buf; size_t len; size_t cap; int oom; } sb_t; typedef struct { jvmtiEnv *jvmti; jlong tag_magic_bits; jlong tag_run_bits; jint class_count; class_info_t *class_info; jlong *class_original_tags; unsigned char *class_object_seen; unsigned char *class_object_traversed; unsigned char *class_object_referrer_set; jlong *class_object_referrer_tag; jint *class_object_class_id; unsigned char *class_object_has_root_method; jmethodID *class_object_root_method; object_entry_t *objects; jint object_capacity; jint object_tag_count; jlong object_number; top_object_t *top_objects; jint top_object_max; jint top_object_count; int callback_error; } heap_ctx_t; static void sb_init(sb_t *sb) { sb->buf = NULL; sb->len = 0; sb->cap = 0; sb->oom = 0; } static void sb_free(sb_t *sb) { if (sb->buf) { free(sb->buf); } sb_init(sb); } static int sb_reserve(sb_t *sb, size_t need) { size_t required; size_t new_cap; char *new_buf; if (sb->oom) { return 0; } required = sb->len + need + 1; if (required <= sb->cap) { return 1; } new_cap = sb->cap ? sb->cap : 1024; while (new_cap < required) { new_cap *= 2; } new_buf = (char *)realloc(sb->buf, new_cap); if (!new_buf) { sb->oom = 1; return 0; } sb->buf = new_buf; sb->cap = new_cap; return 1; } static int sb_append_bytes(sb_t *sb, const char *data, size_t n) { if (!sb_reserve(sb, n)) { return 0; } memcpy(sb->buf + sb->len, data, n); sb->len += n; sb->buf[sb->len] = '\0'; return 1; } static int sb_append_cstr(sb_t *sb, const char *s) { if (!s) { s = ""; } return sb_append_bytes(sb, s, strlen(s)); } static int sb_vprintf(sb_t *sb, const char *fmt, va_list ap) { va_list ap_copy; int required; size_t need; if (sb->oom) { return 0; } va_copy(ap_copy, ap); required = vsnprintf(NULL, 0, fmt, ap_copy); va_end(ap_copy); if (required < 0) { sb->oom = 1; return 0; } need = (size_t)required; if (!sb_reserve(sb, need)) { return 0; } vsnprintf(sb->buf + sb->len, sb->cap - sb->len, fmt, ap); sb->len += need; sb->buf[sb->len] = '\0'; return 1; } static int sb_printf(sb_t *sb, const char *fmt, ...) { va_list ap; int ok; va_start(ap, fmt); ok = sb_vprintf(sb, fmt, ap); va_end(ap); return ok; } static jlong make_tag(heap_ctx_t *ctx, jint type, jint id) { return ctx->tag_magic_bits | ctx->tag_run_bits | (((jlong)type) << HEAP_TAG_TYPE_SHIFT) | ((jlong)id & HEAP_TAG_ID_MASK); } static int is_our_tag(heap_ctx_t *ctx, jlong tag) { return ((tag & HEAP_TAG_MAGIC_MASK) == ctx->tag_magic_bits) && ((tag & HEAP_TAG_RUN_MASK) == ctx->tag_run_bits); } static int tag_type(jlong tag) { return (int)((tag & HEAP_TAG_TYPE_MASK) >> HEAP_TAG_TYPE_SHIFT); } static jint tag_id(jlong tag) { return (jint)(tag & HEAP_TAG_ID_MASK); } static jint decode_class_id(heap_ctx_t *ctx, jlong class_tag) { if (!is_our_tag(ctx, class_tag)) { return 0; } if (tag_type(class_tag) != HEAP_TAG_TYPE_CLASS) { return 0; } jint id = tag_id(class_tag); if (id <= 0 || id > ctx->class_count) { return 0; } return id; } static const char *class_name_by_id(heap_ctx_t *ctx, jint class_id) { if (!ctx || !ctx->class_info) { return ""; } if (class_id < 0 || class_id > ctx->class_count) { return ""; } if (!ctx->class_info[class_id].name) { return ""; } return ctx->class_info[class_id].name; } static void top_objects_swap(top_object_t *a, top_object_t *b) { top_object_t t = *a; *a = *b; *b = t; } // top_objects 数组按 size 升序存放（arr[0] 最小） static void top_objects_add(heap_ctx_t *ctx, jlong size, jlong tag, jint class_id) { jint i; top_object_t obj; if (!ctx || ctx->top_object_max <= 0 || !ctx->top_objects) { return; } obj.size = size; obj.tag = tag; obj.class_id = class_id; if (ctx->top_object_count < ctx->top_object_max) { ctx->top_objects[ctx->top_object_count] = obj; ctx->top_object_count++; i = ctx->top_object_count - 1; while (i > 0 && ctx->top_objects[i].size < ctx->top_objects[i - 1].size) { top_objects_swap(&ctx->top_objects[i], &ctx->top_objects[i - 1]); i--; } return; } if (ctx->top_object_count <= 0) { return; } if (size <= ctx->top_objects[0].size) { return; } ctx->top_objects[0] = obj; i = 0; while (i + 1 < ctx->top_object_count && ctx->top_objects[i].size > ctx->top_objects[i + 1].size) { top_objects_swap(&ctx->top_objects[i], &ctx->top_objects[i + 1]); i++; } } static void record_object(heap_ctx_t *ctx, jint object_class_id, jlong size, jlong object_tag) { ctx->object_number++; if (object_class_id > 0 && object_class_id <= ctx->class_count) { ctx->class_info[object_class_id].instance_count++; ctx->class_info[object_class_id].total_size += size; } top_objects_add(ctx, size, object_tag, object_class_id); } static int ensure_object_capacity(heap_ctx_t *ctx, jint object_id) { jint new_cap; object_entry_t *new_arr; if (object_id <= ctx->object_capacity) { return 1; } new_cap = ctx->object_capacity ? ctx->object_capacity : 1024; while (new_cap < object_id) { new_cap *= 2; } new_arr = (object_entry_t *)realloc(ctx->objects, (size_t)(new_cap + 1) * sizeof(object_entry_t)); if (!new_arr) { return 0; } // 新增区域清零（避免读取未初始化数据） memset(new_arr + ctx->object_capacity + 1, 0, (size_t)(new_cap - ctx->object_capacity) * sizeof(object_entry_t)); ctx->objects = new_arr; ctx->object_capacity = new_cap; return 1; } static const char *primitive_name(char c) { switch (c) { case 'Z': return "boolean"; case 'B': return "byte"; case 'C': return "char"; case 'S': return "short"; case 'I': return "int"; case 'J': return "long"; case 'F': return "float"; case 'D': return "double"; default: return NULL; } } static char *class_name_from_signature(const char *sig) { int dims = 0; const char *p; const char *base; size_t base_len; const char *prim; char *name; size_t total_len; size_t i; if (!sig) { name = (char *)malloc(strlen("") + 1); if (name) { strcpy(name, ""); } return name; } p = sig; while (*p == '[') { dims++; p++; } prim = primitive_name(*p); if (prim) { base = prim; base_len = strlen(prim); } else if (*p == 'L') { // Ljava/lang/String; base = p + 1; { const char *semi = strchr(base, ';'); base_len = semi ? (size_t)(semi - base) : strlen(base); } } else { base = p; base_len = strlen(base); } total_len = base_len + (size_t)dims * 2; name = (char *)malloc(total_len + 1); if (!name) { return NULL; } memcpy(name, base, base_len); name[base_len] = '\0'; // 替换 '/' 为 '.' for (i = 0; i < base_len; i++) { if (name[i] == '/') { name[i] = '.'; } } for (i = 0; i < (size_t)dims; i++) { strcat(name, "[]"); } return name; } static jint JNICALL heap_reference_callback( jvmtiHeapReferenceKind reference_kind, const jvmtiHeapReferenceInfo *reference_info, jlong class_tag, jlong referrer_class_tag, jlong size, jlong *tag_ptr, jlong *referrer_tag_ptr, jint length, void *user_data) { heap_ctx_t *ctx = (heap_ctx_t *)user_data; jlong obj_tag; jlong ref_tag = 0; jint obj_class_id; (void)referrer_class_tag; (void)length; if (!ctx || !tag_ptr) { return 0; } if (ctx->callback_error) { return JVMTI_VISIT_ABORT; } obj_tag = *tag_ptr; obj_class_id = decode_class_id(ctx, class_tag); if (referrer_tag_ptr != NULL) { ref_tag = *referrer_tag_ptr; if (!is_our_tag(ctx, ref_tag)) { // 避免把外部 tag 作为 referrer 链的一部分 ref_tag = 0; } } // Class 对象：tag 为 class tag，不允许覆盖（否则 class_tag 映射会失效） if (is_our_tag(ctx, obj_tag) && tag_type(obj_tag) == HEAP_TAG_TYPE_CLASS) { jint represented_class_id = tag_id(obj_tag); if (represented_class_id > 0 && represented_class_id <= ctx->class_count) { if (!ctx->class_object_seen[represented_class_id]) { ctx->class_object_seen[represented_class_id] = 1; ctx->class_object_class_id[represented_class_id] = obj_class_id; record_object(ctx, obj_class_id, size, obj_tag); } if (!ctx->class_object_referrer_set[represented_class_id]) { ctx->class_object_referrer_set[represented_class_id] = 1; ctx->class_object_referrer_tag[represented_class_id] = ref_tag; if (ref_tag == 0 && reference_kind == JVMTI_HEAP_REFERENCE_STACK_LOCAL && reference_info != NULL) { const jvmtiHeapReferenceInfoStackLocal *info = (const jvmtiHeapReferenceInfoStackLocal *)reference_info; ctx->class_object_root_method[represented_class_id] = info->method; ctx->class_object_has_root_method[represented_class_id] = 1; } } if (!ctx->class_object_traversed[represented_class_id]) { ctx->class_object_traversed[represented_class_id] = 1; return JVMTI_VISIT_OBJECTS; } return 0; } } // 已经是本次运行打过的 object tag，直接跳过 if (is_our_tag(ctx, obj_tag) && tag_type(obj_tag) == HEAP_TAG_TYPE_OBJECT) { return 0; } // 非 Class 对象：打上 object tag 并记录元信息 { jint object_id = ctx->object_tag_count + 1; jlong new_tag; object_entry_t *e; if (object_id <= 0) { ctx->callback_error = 1; return JVMTI_VISIT_ABORT; } if (!ensure_object_capacity(ctx, object_id)) { ctx->callback_error = 1; return JVMTI_VISIT_ABORT; } new_tag = make_tag(ctx, HEAP_TAG_TYPE_OBJECT, object_id); e = &ctx->objects[object_id]; memset(e, 0, sizeof(*e)); e->original_tag = obj_tag; e->class_id = obj_class_id; e->size = size; e->referrer_tag = ref_tag; e->has_root_method = 0; if (ref_tag == 0 && reference_kind == JVMTI_HEAP_REFERENCE_STACK_LOCAL && reference_info != NULL) { const jvmtiHeapReferenceInfoStackLocal *info = (const jvmtiHeapReferenceInfoStackLocal *)reference_info; e->root_method = info->method; e->has_root_method = 1; } *tag_ptr = new_tag; ctx->object_tag_count = object_id; record_object(ctx, obj_class_id, size, new_tag); return JVMTI_VISIT_OBJECTS; } } static jint JNICALL restore_tag_callback(jlong class_tag, jlong size, jlong *tag_ptr, jint length, void *user_data) { heap_ctx_t *ctx = (heap_ctx_t *)user_data; jlong tag; (void)class_tag; (void)size; (void)length; if (!ctx || !tag_ptr) { return JVMTI_VISIT_OBJECTS; } tag = *tag_ptr; if (!is_our_tag(ctx, tag)) { return JVMTI_VISIT_OBJECTS; } if (tag_type(tag) == HEAP_TAG_TYPE_CLASS) { jint cid = tag_id(tag); if (cid > 0 && cid <= ctx->class_count && ctx->class_original_tags) { *tag_ptr = ctx->class_original_tags[cid]; } else { *tag_ptr = 0; } return JVMTI_VISIT_OBJECTS; } if (tag_type(tag) == HEAP_TAG_TYPE_OBJECT) { jint oid = tag_id(tag); if (oid > 0 && oid <= ctx->object_tag_count && ctx->objects) { *tag_ptr = ctx->objects[oid].original_tag; } else { *tag_ptr = 0; } return JVMTI_VISIT_OBJECTS; } *tag_ptr = 0; return JVMTI_VISIT_OBJECTS; } static void free_ctx(heap_ctx_t *ctx) { jint i; if (!ctx) { return; } if (ctx->class_info) { for (i = 0; i <= ctx->class_count; i++) { if (ctx->class_info[i].name) { free(ctx->class_info[i].name); ctx->class_info[i].name = NULL; } } free(ctx->class_info); ctx->class_info = NULL; } if (ctx->class_original_tags) { free(ctx->class_original_tags); ctx->class_original_tags = NULL; } if (ctx->class_object_seen) { free(ctx->class_object_seen); ctx->class_object_seen = NULL; } if (ctx->class_object_traversed) { free(ctx->class_object_traversed); ctx->class_object_traversed = NULL; } if (ctx->class_object_referrer_set) { free(ctx->class_object_referrer_set); ctx->class_object_referrer_set = NULL; } if (ctx->class_object_referrer_tag) { free(ctx->class_object_referrer_tag); ctx->class_object_referrer_tag = NULL; } if (ctx->class_object_class_id) { free(ctx->class_object_class_id); ctx->class_object_class_id = NULL; } if (ctx->class_object_has_root_method) { free(ctx->class_object_has_root_method); ctx->class_object_has_root_method = NULL; } if (ctx->class_object_root_method) { free(ctx->class_object_root_method); ctx->class_object_root_method = NULL; } if (ctx->objects) { free(ctx->objects); ctx->objects = NULL; } if (ctx->top_objects) { free(ctx->top_objects); ctx->top_objects = NULL; } } static int prepare_classes(heap_ctx_t *ctx) { jclass *classes = NULL; jint count = 0; jvmtiError err; jint i; err = JVMTI_CALL(ctx->jvmti, GetLoadedClasses, &count, &classes); if (err != JVMTI_ERROR_NONE || !classes || count <= 0) { return 0; } ctx->class_count = count; ctx->class_info = (class_info_t *)calloc((size_t)(count + 1), sizeof(class_info_t)); ctx->class_original_tags = (jlong *)calloc((size_t)(count + 1), sizeof(jlong)); ctx->class_object_seen = (unsigned char *)calloc((size_t)(count + 1), sizeof(unsigned char)); ctx->class_object_traversed = (unsigned char *)calloc((size_t)(count + 1), sizeof(unsigned char)); ctx->class_object_referrer_set = (unsigned char *)calloc((size_t)(count + 1), sizeof(unsigned char)); ctx->class_object_referrer_tag = (jlong *)calloc((size_t)(count + 1), sizeof(jlong)); ctx->class_object_class_id = (jint *)calloc((size_t)(count + 1), sizeof(jint)); ctx->class_object_has_root_method = (unsigned char *)calloc((size_t)(count + 1), sizeof(unsigned char)); ctx->class_object_root_method = (jmethodID *)calloc((size_t)(count + 1), sizeof(jmethodID)); if (!ctx->class_info || !ctx->class_original_tags || !ctx->class_object_seen || !ctx->class_object_traversed || !ctx->class_object_referrer_set || !ctx->class_object_referrer_tag || !ctx->class_object_class_id || !ctx->class_object_has_root_method || !ctx->class_object_root_method) { JVMTI_CALL(ctx->jvmti, Deallocate, (unsigned char *)classes); return 0; } // class_info[0] 预留为 unknown ctx->class_info[0].name = (char *)malloc(strlen("") + 1); if (ctx->class_info[0].name) { strcpy(ctx->class_info[0].name, ""); } for (i = 1; i <= count; i++) { jclass cls = classes[i - 1]; jlong old_tag = 0; char *sig = NULL; char *name = NULL; JVMTI_CALL(ctx->jvmti, GetTag, cls, &old_tag); ctx->class_original_tags[i] = old_tag; JVMTI_CALL(ctx->jvmti, SetTag, cls, make_tag(ctx, HEAP_TAG_TYPE_CLASS, i)); err = JVMTI_CALL(ctx->jvmti, GetClassSignature, cls, &sig, NULL); if (err == JVMTI_ERROR_NONE) { name = class_name_from_signature(sig); if (sig) { JVMTI_CALL(ctx->jvmti, Deallocate, (unsigned char *)sig); } } if (!name) { name = (char *)malloc(strlen("") + 1); if (name) { strcpy(name, ""); } } ctx->class_info[i].name = name; } JVMTI_CALL(ctx->jvmti, Deallocate, (unsigned char *)classes); return 1; } static void restore_tags(heap_ctx_t *ctx) { jvmtiHeapCallbacks callbacks; jvmtiError err; memset(&callbacks, 0, sizeof(callbacks)); callbacks.heap_iteration_callback = restore_tag_callback; err = JVMTI_CALL(ctx->jvmti, IterateThroughHeap, JVMTI_HEAP_FILTER_TAGGED, NULL, &callbacks, (void *)ctx); (void)err; } static char *build_heap_analyze_output(heap_ctx_t *ctx, jint class_num, jint object_num) { sb_t sb; jint i; sb_init(&sb); if (class_num < 0) { class_num = 0; } if (object_num < 0) { object_num = 0; } sb_printf(&sb, "class_number: %d\n", (int)ctx->class_count); sb_printf(&sb, "object_number: %lld\n", (long long)ctx->object_number); sb_printf(&sb, "\n%-4s\t%-10s\t%s\n", "id", "#bytes", "class_name"); sb_printf(&sb, "----------------------------------------------------\n"); for (i = 0; i < ctx->top_object_count; i++) { jint idx = ctx->top_object_count - 1 - i; top_object_t *o = &ctx->top_objects[idx]; sb_printf(&sb, "%-4d\t%-10lld\t%s\n", (int)(i + 1), (long long)o->size, class_name_by_id(ctx, o->class_id)); } sb_printf(&sb, "\n"); // 选出占用最大的 class_num 个类 if (class_num > 0) { top_object_t *top_classes; jint top_count = 0; jint max = class_num; if (max > ctx->class_count) { max = ctx->class_count; } top_classes = (top_object_t *)calloc((size_t)max, sizeof(top_object_t)); // 复用字段 if (top_classes) { jint cid; for (cid = 1; cid <= ctx->class_count; cid++) { jlong total = ctx->class_info[cid].total_size; // top_classes 按 total_size 升序存放 if (top_count < max) { top_classes[top_count].size = total; top_classes[top_count].class_id = cid; top_count++; i = top_count - 1; while (i > 0 && top_classes[i].size < top_classes[i - 1].size) { top_objects_swap(&top_classes[i], &top_classes[i - 1]); i--; } } else if (total > top_classes[0].size) { top_classes[0].size = total; top_classes[0].class_id = cid; i = 0; while (i + 1 < top_count && top_classes[i].size > top_classes[i + 1].size) { top_objects_swap(&top_classes[i], &top_classes[i + 1]); i++; } } } sb_printf(&sb, "\n%-4s\t%-12s\t%-15s\t%s\n", "id", "#instances", "#bytes", "class_name"); sb_printf(&sb, "----------------------------------------------------\n"); for (i = 0; i < top_count; i++) { jint idx = top_count - 1 - i; jint cid = top_classes[idx].class_id; sb_printf(&sb, "%-4d\t%-12lld\t%-15lld\t%s\n", (int)(i + 1), (long long)ctx->class_info[cid].instance_count, (long long)ctx->class_info[cid].total_size, class_name_by_id(ctx, cid)); } sb_printf(&sb, "\n"); free(top_classes); } } if (sb.oom) { sb_free(&sb); return NULL; } return sb.buf; } static int get_class_id_for_tag(heap_ctx_t *ctx, jlong tag, jint *out_class_id) { if (!ctx || !out_class_id) { return 0; } if (!is_our_tag(ctx, tag)) { return 0; } if (tag_type(tag) == HEAP_TAG_TYPE_OBJECT) { jint oid = tag_id(tag); if (oid <= 0 || oid > ctx->object_tag_count || !ctx->objects) { return 0; } *out_class_id = ctx->objects[oid].class_id; return 1; } if (tag_type(tag) == HEAP_TAG_TYPE_CLASS) { jint cid = tag_id(tag); if (cid <= 0 || cid > ctx->class_count || !ctx->class_object_class_id) { return 0; } *out_class_id = ctx->class_object_class_id[cid]; return 1; } return 0; } static int get_referrer_for_tag(heap_ctx_t *ctx, jlong tag, jlong *out_ref) { if (!ctx || !out_ref) { return 0; } if (!is_our_tag(ctx, tag)) { return 0; } if (tag_type(tag) == HEAP_TAG_TYPE_OBJECT) { jint oid = tag_id(tag); if (oid <= 0 || oid > ctx->object_tag_count || !ctx->objects) { return 0; } *out_ref = ctx->objects[oid].referrer_tag; return 1; } if (tag_type(tag) == HEAP_TAG_TYPE_CLASS) { jint cid = tag_id(tag); if (cid <= 0 || cid > ctx->class_count || !ctx->class_object_referrer_set) { return 0; } if (!ctx->class_object_referrer_set[cid]) { return 0; } *out_ref = ctx->class_object_referrer_tag[cid]; return 1; } return 0; } static int get_root_method_for_tag(heap_ctx_t *ctx, jlong tag, jmethodID *out_method) { if (!ctx || !out_method) { return 0; } if (!is_our_tag(ctx, tag)) { return 0; } if (tag_type(tag) == HEAP_TAG_TYPE_OBJECT) { jint oid = tag_id(tag); if (oid <= 0 || oid > ctx->object_tag_count || !ctx->objects) { return 0; } if (!ctx->objects[oid].has_root_method) { return 0; } *out_method = ctx->objects[oid].root_method; return 1; } if (tag_type(tag) == HEAP_TAG_TYPE_CLASS) { jint cid = tag_id(tag); if (cid <= 0 || cid > ctx->class_count || !ctx->class_object_has_root_method) { return 0; } if (!ctx->class_object_has_root_method[cid]) { return 0; } *out_method = ctx->class_object_root_method[cid]; return 1; } return 0; } static void top_target_add(top_object_t *arr, jint max, jint *count, jlong size, jint object_id) { jint i; top_object_t obj; if (max <= 0 || !arr || !count) { return; } obj.size = size; obj.class_id = object_id; // 复用 class_id 字段存 object_id obj.tag = 0; if (*count < max) { arr[*count] = obj; (*count)++; i = *count - 1; while (i > 0 && arr[i].size < arr[i - 1].size) { top_objects_swap(&arr[i], &arr[i - 1]); i--; } return; } if (*count <= 0) { return; } if (size <= arr[0].size) { return; } arr[0] = obj; i = 0; while (i + 1 < *count && arr[i].size > arr[i + 1].size) { top_objects_swap(&arr[i], &arr[i + 1]); i++; } } static char *build_reference_analyze_output(heap_ctx_t *ctx, jclass klass, jint object_num, jint backtrace_num) { sb_t sb; jint i; jlong klass_tag = 0; jint target_class_id = 0; top_object_t *top_target = NULL; jint top_count = 0; sb_init(&sb); if (object_num < 0) { object_num = 0; } if (JVMTI_CALL(ctx->jvmti, GetTag, klass, &klass_tag) != JVMTI_ERROR_NONE) { sb_append_cstr(&sb, "ERROR: JVMTI GetTag(klass) failed\n"); return sb.buf; } target_class_id = decode_class_id(ctx, klass_tag); if (target_class_id <= 0) { sb_append_cstr(&sb, "ERROR: can not resolve class tag\n"); return sb.buf; } if (object_num > 0) { top_target = (top_object_t *)calloc((size_t)object_num, sizeof(top_object_t)); } if (top_target) { jint oid; for (oid = 1; oid <= ctx->object_tag_count; oid++) { if (ctx->objects[oid].class_id == target_class_id) { top_target_add(top_target, object_num, &top_count, ctx->objects[oid].size, oid); } } } sb_printf(&sb, "\n%-4s\t%-10s\t%s\n", "id", "#bytes", backtrace_num ? "class_name & references" : "class_name"); sb_printf(&sb, "----------------------------------------------------\n"); for (i = 0; i < top_count; i++) { jint idx = top_count - 1 - i; jint oid = top_target[idx].class_id; jlong size = top_target[idx].size; jlong cur_tag = make_tag(ctx, HEAP_TAG_TYPE_OBJECT, oid); jlong next_tag = ctx->objects[oid].referrer_tag; sb_printf(&sb, "%-4d\t%-10lld\t%s", (int)(i + 1), (long long)size, class_name_by_id(ctx, ctx->objects[oid].class_id)); if (backtrace_num != 0) { int steps = 0; int max_steps = (backtrace_num == -1) ? INT_MAX : (backtrace_num - 1); while (next_tag != 0 && steps < max_steps) { jint cid = 0; if (!get_class_id_for_tag(ctx, next_tag, &cid)) { next_tag = -1; break; } sb_printf(&sb, " <-- %s", class_name_by_id(ctx, cid)); cur_tag = next_tag; if (!get_referrer_for_tag(ctx, cur_tag, &next_tag)) { next_tag = -1; break; } steps++; } if (next_tag == 0) { jmethodID method = NULL; sb_append_cstr(&sb, " <-- root"); if (get_root_method_for_tag(ctx, cur_tag, &method) && method) { char *name = NULL; if (JVMTI_CALL(ctx->jvmti, GetMethodName, method, &name, NULL, NULL) == JVMTI_ERROR_NONE && name) { sb_printf(&sb, "(local variable in method: %s)\n", name); JVMTI_CALL(ctx->jvmti, Deallocate, (unsigned char *)name); } else { sb_append_cstr(&sb, "\n"); } } else { sb_append_cstr(&sb, "\n"); } } else { sb_append_cstr(&sb, " <-- ...\n"); } } else { sb_append_cstr(&sb, "\n"); } } sb_append_cstr(&sb, "\n"); if (top_target) { free(top_target); } if (sb.oom) { sb_free(&sb); return NULL; } return sb.buf; } char *arthas_vmtool_heap_analyze(jvmtiEnv *jvmti, jint class_num, jint object_num) { heap_ctx_t ctx; jvmtiHeapCallbacks callbacks; jvmtiError err; jlong run_id; char *result = NULL; memset(&ctx, 0, sizeof(ctx)); ctx.jvmti = jvmti; run_id = (++g_heap_analyzer_run_counter) & 0xFFFF; if (run_id == 0) { run_id = 1; } ctx.tag_magic_bits = ((jlong)HEAP_TAG_MAGIC) << HEAP_TAG_MAGIC_SHIFT; ctx.tag_run_bits = ((jlong)run_id) << HEAP_TAG_RUN_SHIFT; if (object_num > 0) { ctx.top_object_max = object_num; ctx.top_objects = (top_object_t *)calloc((size_t)object_num, sizeof(top_object_t)); if (!ctx.top_objects) { return NULL; } } if (!prepare_classes(&ctx)) { free_ctx(&ctx); return NULL; } memset(&callbacks, 0, sizeof(callbacks)); callbacks.heap_reference_callback = heap_reference_callback; err = JVMTI_CALL(jvmti, FollowReferences, 0, NULL, NULL, &callbacks, (void *)&ctx); (void)err; if (ctx.callback_error) { sb_t sb; sb_init(&sb); sb_append_cstr(&sb, "ERROR: heapAnalyze aborted (native OOM)\n"); result = sb.buf; } else { result = build_heap_analyze_output(&ctx, class_num, object_num); } restore_tags(&ctx); free_ctx(&ctx); return result; } char *arthas_vmtool_reference_analyze(jvmtiEnv *jvmti, jclass klass, jint object_num, jint backtrace_num) { heap_ctx_t ctx; jvmtiHeapCallbacks callbacks; jvmtiError err; jlong run_id; char *result = NULL; memset(&ctx, 0, sizeof(ctx)); ctx.jvmti = jvmti; run_id = (++g_heap_analyzer_run_counter) & 0xFFFF; if (run_id == 0) { run_id = 1; } ctx.tag_magic_bits = ((jlong)HEAP_TAG_MAGIC) << HEAP_TAG_MAGIC_SHIFT; ctx.tag_run_bits = ((jlong)run_id) << HEAP_TAG_RUN_SHIFT; if (!prepare_classes(&ctx)) { free_ctx(&ctx); return NULL; } memset(&callbacks, 0, sizeof(callbacks)); callbacks.heap_reference_callback = heap_reference_callback; err = JVMTI_CALL(jvmti, FollowReferences, 0, NULL, NULL, &callbacks, (void *)&ctx); (void)err; if (ctx.callback_error) { sb_t sb; sb_init(&sb); sb_append_cstr(&sb, "ERROR: referenceAnalyze aborted (native OOM)\n"); result = sb.buf; } else { result = build_reference_analyze_output(&ctx, klass, object_num, backtrace_num); } restore_tags(&ctx); free_ctx(&ctx); return result; } ================================================ FILE: arthas-vmtool/src/main/native/src/heap_analyzer.h ================================================ #ifndef ARTHAS_VMTOOL_HEAP_ANALYZER_H #define ARTHAS_VMTOOL_HEAP_ANALYZER_H #include #include #ifdef __cplusplus extern "C" { #endif /** * 使用 JVMTI FollowReferences 从 GC Root 遍历可达对象，统计各类实例占用，并输出占用最大的对象/类。 * * 返回值为 malloc 分配的 C 字符串，调用方负责 free。 */ char *arthas_vmtool_heap_analyze(jvmtiEnv *jvmti, jint class_num, jint object_num); /** * 使用 JVMTI FollowReferences 建立“从对象回溯到 root 的一条路径”，并输出指定类中占用最大的若干对象及回溯链。 * * 返回值为 malloc 分配的 C 字符串，调用方负责 free。 */ char *arthas_vmtool_reference_analyze(jvmtiEnv *jvmti, jclass klass, jint object_num, jint backtrace_num); #ifdef __cplusplus } #endif #endif ================================================ FILE: arthas-vmtool/src/main/native/src/jni-library.cpp ================================================ #include #include #include #include #include #include "arthas_VmTool.h" // under target/native/javah/ #include "heap_analyzer.h" #ifdef __GLIBC__ #include #endif static jvmtiEnv *jvmti; static jlong tagCounter = 0; struct LimitCounter { jint currentCounter; jint limitValue; void init(jint limit) { currentCounter = 0; limitValue = limit; } void countDown() { currentCounter++; } bool allow() { if (limitValue < 0) { return true; } return limitValue > currentCounter; } }; // 每次 IterateOverInstancesOfClass 调用前需要先 init static LimitCounter limitCounter = {0, 0}; extern "C" int init_agent(JavaVM *vm, void *reserved) { jint rc; /* Get JVMTI environment */ rc = vm->GetEnv((void **)&jvmti, JVMTI_VERSION_1_2); if (rc != JNI_OK) { fprintf(stderr, "ERROR: arthas vmtool Unable to create jvmtiEnv, GetEnv failed, error=%d\n", rc); return -1; } jvmtiCapabilities capabilities = {0}; capabilities.can_tag_objects = 1; jvmtiError error = jvmti->AddCapabilities(&capabilities); if (error) { fprintf(stderr, "ERROR: arthas vmtool JVMTI AddCapabilities failed!%u\n", error); return JNI_FALSE; } return JNI_OK; } extern "C" JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *vm, char *options, void *reserved) { return init_agent(vm, reserved); } extern "C" JNIEXPORT jint JNICALL Agent_OnAttach(JavaVM* vm, char* options, void* reserved) { return init_agent(vm, reserved); } extern "C" JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) { init_agent(vm, reserved); return JNI_VERSION_1_6; } extern "C" JNIEXPORT void JNICALL Java_arthas_VmTool_forceGc0(JNIEnv *env, jclass thisClass) { jvmti->ForceGarbageCollection(); } extern "C" jlong getTag() { return ++tagCounter; } extern "C" jvmtiIterationControl JNICALL HeapObjectCallback(jlong class_tag, jlong size, jlong *tag_ptr, void *user_data) { jlong *data = static_cast(user_data); *tag_ptr = *data; limitCounter.countDown(); if (limitCounter.allow()) { return JVMTI_ITERATION_CONTINUE; }else { return JVMTI_ITERATION_ABORT; } } extern "C" JNIEXPORT jobjectArray JNICALL Java_arthas_VmTool_getInstances0(JNIEnv *env, jclass thisClass, jclass klass, jint limit) { jlong tag = getTag(); limitCounter.init(limit); jvmtiError error = jvmti->IterateOverInstancesOfClass(klass, JVMTI_HEAP_OBJECT_EITHER, HeapObjectCallback, &tag); if (error) { printf("ERROR: JVMTI IterateOverInstancesOfClass failed!%u\n", error); return NULL; } jint count = 0; jobject *instances; error = jvmti->GetObjectsWithTags(1, &tag, &count, &instances, NULL); if (error) { printf("ERROR: JVMTI GetObjectsWithTags failed!%u\n", error); return NULL; } jobjectArray array = env->NewObjectArray(count, klass, NULL); //添加元素到数组 for (int i = 0; i < count; i++) { env->SetObjectArrayElement(array, i, instances[i]); } jvmti->Deallocate(reinterpret_cast(instances)); return array; } extern "C" JNIEXPORT jlong JNICALL Java_arthas_VmTool_sumInstanceSize0(JNIEnv *env, jclass thisClass, jclass klass) { jlong tag = getTag(); limitCounter.init(-1); jvmtiError error = jvmti->IterateOverInstancesOfClass(klass, JVMTI_HEAP_OBJECT_EITHER, HeapObjectCallback, &tag); if (error) { printf("ERROR: JVMTI IterateOverInstancesOfClass failed!%u\n", error); return -1; } jint count = 0; jobject *instances; error = jvmti->GetObjectsWithTags(1, &tag, &count, &instances, NULL); if (error) { printf("ERROR: JVMTI GetObjectsWithTags failed!%u\n", error); return -1; } jlong sum = 0; for (int i = 0; i < count; i++) { jlong size = 0; jvmti->GetObjectSize(instances[i], &size); sum = sum + size; } jvmti->Deallocate(reinterpret_cast(instances)); return sum; } extern "C" JNIEXPORT jlong JNICALL Java_arthas_VmTool_getInstanceSize0 (JNIEnv *env, jclass thisClass, jobject instance) { jlong size = -1; jvmtiError error = jvmti->GetObjectSize(instance, &size); if (error) { printf("ERROR: JVMTI GetObjectSize failed!%u\n", error); } return size; } extern "C" JNIEXPORT jlong JNICALL Java_arthas_VmTool_countInstances0(JNIEnv *env, jclass thisClass, jclass klass) { jlong tag = getTag(); limitCounter.init(-1); jvmtiError error = jvmti->IterateOverInstancesOfClass(klass, JVMTI_HEAP_OBJECT_EITHER, HeapObjectCallback, &tag); if (error) { printf("ERROR: JVMTI IterateOverInstancesOfClass failed!%u\n", error); return -1; } jint count = 0; error = jvmti->GetObjectsWithTags(1, &tag, &count, NULL, NULL); if (error) { printf("ERROR: JVMTI GetObjectsWithTags failed!%u\n", error); return -1; } return count; } extern "C" JNIEXPORT jobjectArray JNICALL Java_arthas_VmTool_getAllLoadedClasses0 (JNIEnv *env, jclass thisClass, jclass kclass) { jclass *classes; jint count = 0; jvmtiError error = jvmti->GetLoadedClasses(&count, &classes); if (error) { printf("ERROR: JVMTI GetLoadedClasses failed!\n"); return NULL; } jobjectArray array = env->NewObjectArray(count, kclass, NULL); //添加元素到数组 for (int i = 0; i < count; i++) { env->SetObjectArrayElement(array, i, classes[i]); } jvmti->Deallocate(reinterpret_cast(classes)); return array; } extern "C" JNIEXPORT jint JNICALL Java_arthas_VmTool_mallocTrim0 (JNIEnv *env, jclass thisClass) { #ifdef __GLIBC__ return ::malloc_trim(0); #endif return -1; } extern "C" JNIEXPORT jboolean JNICALL Java_arthas_VmTool_mallocStats0 (JNIEnv *env, jclass thisClass) { #ifdef __GLIBC__ ::malloc_stats(); return JNI_TRUE; #else return JNI_FALSE; #endif } extern "C" JNIEXPORT jstring JNICALL Java_arthas_VmTool_heapAnalyze0 (JNIEnv *env, jclass thisClass, jint classNum, jint objectNum) { (void)thisClass; char *result = arthas_vmtool_heap_analyze(jvmti, classNum, objectNum); if (!result) { return env->NewStringUTF("ERROR: heapAnalyze failed (native OOM or JVMTI error)\n"); } jstring s = env->NewStringUTF(result); free(result); return s; } extern "C" JNIEXPORT jstring JNICALL Java_arthas_VmTool_referenceAnalyze0 (JNIEnv *env, jclass thisClass, jclass klass, jint objectNum, jint backtraceNum) { (void)thisClass; char *result = arthas_vmtool_reference_analyze(jvmti, klass, objectNum, backtraceNum); if (!result) { return env->NewStringUTF("ERROR: referenceAnalyze failed (native OOM or JVMTI error)\n"); } jstring s = env->NewStringUTF(result); free(result); return s; } ================================================ FILE: arthas-vmtool/src/test/java/arthas/VmToolTest.java ================================================ package arthas; import java.io.File; import java.lang.ref.WeakReference; import java.util.ArrayList; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicLong; import org.assertj.core.api.Assertions; import org.junit.Assert; import org.junit.Test; import com.taobao.arthas.common.VmToolUtils; /** * 以下本地测试的jvm参数均为：-Xms128m -Xmx128m */ public class VmToolTest { private VmTool initVmTool() { File path = new File(VmTool.class.getProtectionDomain().getCodeSource().getLocation().getPath()).getParentFile(); String libPath = new File(path, VmToolUtils.detectLibName()).getAbsolutePath(); return VmTool.getInstance(libPath); } /** * macbook上运行结果如下 * allLoadedClasses->1050 * arthas.VmTool@5bb21b69 arthas.VmTool@6b9651f3 * before instances->[arthas.VmTool@5bb21b69, arthas.VmTool@6b9651f3] * size->16 * count->2 * sum size->32 * null null * after instances->[] */ @Test public void testIsSnapshot() { try { VmTool vmtool = initVmTool(); //调用native方法，获取已加载的类，不包括小类型(如int) Class[] allLoadedClasses = vmtool.getAllLoadedClasses(); System.out.println("allLoadedClasses->" + allLoadedClasses.length); //通过下面的例子，可以看到getInstances(Class klass)拿到的是当前存活的所有对象 WeakReference weakReference1 = new WeakReference(new VmToolTest()); WeakReference weakReference2 = new WeakReference(new VmToolTest()); System.out.println(weakReference1.get() + " " + weakReference2.get()); VmTool[] beforeInstances = vmtool.getInstances(VmTool.class); System.out.println("before instances->" + beforeInstances); System.out.println("size->" + vmtool.getInstanceSize(weakReference1.get())); System.out.println("count->" + vmtool.countInstances(VmTool.class)); System.out.println("sum size->" + vmtool.sumInstanceSize(VmTool.class)); beforeInstances = null; vmtool.forceGc(); Thread.sleep(100); System.out.println(weakReference1.get() + " " + weakReference2.get()); VmTool[] afterInstances = vmtool.getInstances(VmTool.class); System.out.println("after instances->" + afterInstances); } catch (Exception e) { e.printStackTrace(); } } @Test public void testGetInstancesMemoryLeak() { //这里睡20s是为了方便用jprofiler连接上进程 // try { // Thread.sleep(20000); // } catch (InterruptedException e) { // e.printStackTrace(); // } VmTool vmtool = initVmTool(); final AtomicLong totalTime = new AtomicLong(); //本地测试请改成200000 for (int i = 1; i <= 2; i++) { long start = System.currentTimeMillis(); WeakReference reference = new WeakReference(vmtool.getInstances(Object.class)); Object[] instances = reference.get(); long cost = System.currentTimeMillis() - start; totalTime.addAndGet(cost); System.out.println(i + " instance size:" + (instances == null ? 0 : instances.length) + ", cost " + cost + "ms avgCost " + totalTime.doubleValue() / i + "ms"); instances = null; vmtool.forceGc(); } } @Test public void testSumInstancesMemoryLeak() { //这里睡20s是为了方便用jprofiler连接上进程 // try { // Thread.sleep(20000); // } catch (InterruptedException e) { // e.printStackTrace(); // } VmTool vmtool = initVmTool(); final AtomicLong totalTime = new AtomicLong(); //本地测试请改成200000 for (int i = 1; i <= 2; i++) { long start = System.currentTimeMillis(); long sum = vmtool.sumInstanceSize(Object.class); long cost = System.currentTimeMillis() - start; totalTime.addAndGet(cost); System.out.println(i + " sum:" + sum + ", cost " + cost + "ms avgCost " + totalTime.doubleValue() / i + "ms"); } } @Test public void testCountInstancesMemoryLeak() { //这里睡20s是为了方便用jprofiler连接上进程 // try { // Thread.sleep(20000); // } catch (InterruptedException e) { // e.printStackTrace(); // } VmTool vmtool = initVmTool(); final AtomicLong totalTime = new AtomicLong(); //本地测试请改成200000 for (int i = 1; i <= 2; i++) { long start = System.currentTimeMillis(); long count = vmtool.countInstances(Object.class); long cost = System.currentTimeMillis() - start; totalTime.addAndGet(cost); System.out.println(i + " count:" + count + ", cost " + cost + "ms avgCost " + totalTime.doubleValue() / i + "ms"); } } @Test public void testGetAllLoadedClassesMemoryLeak() { //这里睡20s是为了方便用jprofiler连接上进程 // try { // Thread.sleep(20000); // } catch (InterruptedException e) { // e.printStackTrace(); // } VmTool vmtool = initVmTool(); final AtomicLong totalTime = new AtomicLong(); //本地测试请改成200000 for (int i = 1; i <= 2; i++) { long start = System.currentTimeMillis(); Class[] allLoadedClasses = vmtool.getAllLoadedClasses(); long cost = System.currentTimeMillis() - start; totalTime.addAndGet(cost); System.out.println(i + " class size:" + allLoadedClasses.length + ", cost " + cost + "ms avgCost " + totalTime.doubleValue() / i + "ms"); allLoadedClasses = null; } } class LimitTest { } @Test public void test_getInstances_lmiit() { VmTool vmtool = initVmTool(); ArrayList list = new ArrayList(); for (int i = 0; i < 10; ++i) { list.add(new LimitTest()); } LimitTest[] instances = vmtool.getInstances(LimitTest.class, 5); Assertions.assertThat(instances).hasSize(5); LimitTest[] instances2 = vmtool.getInstances(LimitTest.class, -1); Assertions.assertThat(instances2).hasSize(10); LimitTest[] instances3 = vmtool.getInstances(LimitTest.class, 1); Assertions.assertThat(instances3).hasSize(1); } interface III { } class AAA implements III { } @Test public void test_getInstances_interface() { AAA aaa = new AAA(); VmTool vmtool = initVmTool(); III[] interfaceInstances = vmtool.getInstances(III.class); Assertions.assertThat(interfaceInstances.length).isEqualTo(1); AAA[] ObjectInstances = vmtool.getInstances(AAA.class); Assertions.assertThat(ObjectInstances.length).isEqualTo(1); Assertions.assertThat(interfaceInstances[0]).isEqualTo(ObjectInstances[0]); } @Test public void test_interrupt_thread() throws InterruptedException { String threadName = "interruptMe"; final RuntimeException[] re = new RuntimeException[1]; Runnable runnable = new Runnable() { @Override public void run() { try { System.out.printf("Thread name is: [%s], thread id is: [%d].\n", Thread.currentThread().getName(),Thread.currentThread().getId()); TimeUnit.SECONDS.sleep(1000); } catch (InterruptedException e) { re[0] = new RuntimeException("interrupted " + Thread.currentThread().getId() + " thread success."); } } }; Thread interruptMe = new Thread(runnable,threadName); Thread interruptMe1 = new Thread(runnable,threadName); interruptMe.start(); interruptMe1.start(); VmTool tool = initVmTool(); tool.interruptSpecialThread((int) interruptMe.getId()); TimeUnit.SECONDS.sleep(5); Assert.assertEquals(("interrupted " + interruptMe.getId() + " thread success."), re[0].getMessage()); } @Test public void testMallocTrim() { VmTool vmtool = initVmTool(); vmtool.mallocTrim(); } @Test public void testMallocStats() { VmTool vmtool = initVmTool(); vmtool.mallocStats(); } static class ByteHolder { byte[] bytes; ByteHolder(int sizeMb) { this.bytes = new byte[sizeMb * 1024 * 1024]; } } @Test public void testHeapAnalyze() { VmTool vmtool = initVmTool(); String result = vmtool.heapAnalyze(5, 3); Assertions.assertThat(result).contains("class_number:").contains("object_number:"); } @Test public void testReferenceAnalyze() { // 通过本地变量制造 root(stack local) 引用，便于回溯链输出 ByteHolder bh1 = new ByteHolder(1); ByteHolder bh2 = new ByteHolder(2); Assertions.assertThat(bh1).isNotNull(); Assertions.assertThat(bh2).isNotNull(); VmTool vmtool = initVmTool(); String result = vmtool.referenceAnalyze(ByteHolder.class, 2, -1); Assertions.assertThat(result).contains("ByteHolder").contains("root"); } } ================================================ FILE: as-package.sh ================================================ #!/bin/bash DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" usage() { cat <] Options: --fast 本地快速打包：不执行 clean + 跳过 site 前端构建 + Maven 并行构建(-T 1C) --no-clean 不执行 Maven clean（保留各模块 target 缓存） --skip-site 跳过 site 模块的前端构建（vuepress/yarn），不影响默认打包产物 -T, --threads 传给 Maven 的并行线程数（如 1C/4） -h, --help 显示帮助 EOF } NO_CLEAN=false SKIP_SITE=false MVN_THREADS="" MVN_EXTRA_ARGS=() while [[ $# -gt 0 ]]; do case "$1" in --fast) NO_CLEAN=true SKIP_SITE=true [[ -z "${MVN_THREADS}" ]] && MVN_THREADS="1C" shift ;; --no-clean) NO_CLEAN=true shift ;; --skip-site) SKIP_SITE=true shift ;; -T|--threads) if [[ $# -lt 2 ]]; then echo "Missing value for $1" 1>&2 usage 1>&2 exit 2 fi MVN_THREADS="$2" shift 2 ;; -h|--help) usage exit 0 ;; --) shift MVN_EXTRA_ARGS+=("$@") break ;; *) MVN_EXTRA_ARGS+=("$1") shift ;; esac done get_local_maven_project_version() { "$DIR/mvnw" org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate \ -Dexpression=project.version -q -DforceStdout -f "$DIR/pom.xml" } "$DIR/mvnw" -version CUR_VERSION=$(get_local_maven_project_version) # arthas's version DATE=$(date '+%Y%m%d%H%M%S') ARTHAS_VERSION="${CUR_VERSION}.${DATE}" echo "${ARTHAS_VERSION}" > $DIR/core/src/main/resources/com/taobao/arthas/core/res/version # define newset arthas lib home NEWEST_ARTHAS_LIB_HOME=${HOME}/.arthas/lib/${ARTHAS_VERSION}/arthas # exit shell with err_code # $1 : err_code # $2 : err_msg exit_on_err() { [[ ! -z "${2}" ]] && echo "${2}" 1>&2 exit ${1} } # maven package the arthas MVN_ARGS=(-f "$DIR/pom.xml" -Dmaven.test.skip=true -DskipTests=true -Dmaven.javadoc.skip=true) if [[ -n "${MVN_THREADS}" ]]; then MVN_ARGS+=(-T "${MVN_THREADS}") fi if [[ "${SKIP_SITE}" == "true" ]]; then MVN_ARGS+=(-Darthas.site.frontend.skip=true) fi if [[ "${NO_CLEAN}" == "true" ]]; then MVN_GOALS=(package) else MVN_GOALS=(clean package) fi # maven package the arthas "$DIR/mvnw" "${MVN_ARGS[@]}" "${MVN_EXTRA_ARGS[@]}" "${MVN_GOALS[@]}" \ || exit_on_err 1 "package arthas failed." rm -r "$DIR/core/src/main/resources/com/taobao/arthas/core/res/version" packaging_bin_path=$(ls "${DIR}"/packaging/target/arthas-bin.zip) # install to local mkdir -p "${NEWEST_ARTHAS_LIB_HOME}" unzip ${packaging_bin_path} -d "${NEWEST_ARTHAS_LIB_HOME}/" # print ~/.arthas directory size arthas_dir_size="$(du -hs ${HOME}/.arthas | cut -f1)" echo "${HOME}/.arthas size: ${arthas_dir_size}" ================================================ FILE: batch.as ================================================ dashboard -n 1 sysprop watch arthas.Test test "@com.alibaba.arthas.Test@n.entrySet().iterator.{? #this.key.name()=='STOP' }" -n 2 ================================================ FILE: bin/as-service.bat ================================================ @echo off REM DON'T CHANGE THE FIRST LINE OF THE FILE, WINDOWS SERVICE RUN BAT NEED IT! (@echo off) REM don't call 'echo' before 'start as.bat' REM You can specify Java Home via AS_JAVA_HOME here or Windows System Environment, but not in cmd.exe REM set AS_JAVA_HOME=C:\Program Files\Java\jdk1.8.0_131 set basedir=%~dp0 set filename=%~nx0 set srv_name=arthas set telnet_port=3658 set http_port=8563 REM parse extend args set arg1=%1 set pid= set port= set ignoreTools=0 set as_remove_srv=0 set as_service=0 set srv_interact=0 for %%a in (%*) do ( if "%%a"=="--remove" set as_remove_srv=1 if "%%a"=="--service" set as_service=1 if "%%a"=="--interact" set srv_interact=1 if "%%a"=="--ignore-tools" set ignoreTools=1 ) REM Parse command line args (https://stackoverflow.com/a/35445653) :read_params if not %1/==/ ( if not "%__var%"=="" ( if not "%__var:~0,1%"=="-" ( endlocal goto read_params ) endlocal & set %__var:~1%=%~1 ) else ( setlocal & set __var=%~1 ) shift goto read_params ) if not "%telnet-port%"=="" set telnet_port=%telnet-port% if not "%http-port%"=="" set http_port=%http-port% REM Setup JAVA_HOME REM Decode -java-home: '@' -> ' ' if not "%java-home%"=="" set JAVA_HOME=%java-home:@= % REM If has AS_JAVA_HOME, overriding JAVA_HOME if not "%AS_JAVA_HOME%" == "" set JAVA_HOME=%AS_JAVA_HOME% REM use defined is better then "%var%" == "", avoid trouble of "" if not defined JAVA_HOME goto noJavaHome REM Remove "" in path set JAVA_HOME=%JAVA_HOME:"=% if not exist "%JAVA_HOME%\bin\java.exe" goto noJavaHome if %ignoreTools% == 1 ( echo Ignore tools.jar, make sure the java version ^>^= 9 ) else ( if not exist "%JAVA_HOME%\lib\tools.jar" ( echo Can not find lib\tools.jar under %JAVA_HOME%! echo If java version ^<^= 1.8, please make sure JAVA_HOME point to a JDK not a JRE. echo If java version ^>^= 9, try to run %filename% ^ --ignore-tools goto :end ) ) set JAVACMD="%JAVA_HOME%\bin\java" REM Runas Service, don't call 'echo' before 'start as.bat' set as_args=-telnet-port %telnet_port% -http-port %http_port% if %srv_interact%==0 set as_args=%as_args% --no-interact if %ignoreTools%==1 set as_args=%as_args% --ignore-tools if %as_service%==1 ( REM run as.bat start /wait %basedir%\as.bat %pid% %as_args% exit 0 REM DEBUG run args REM echo as_args: %as_args% REM echo start /wait %basedir%\as.bat %pid% %as_args% REM exit /b 0 ) REM If the first arg is a number, then set it as pid echo %arg1%| findstr /r "^[1-9][0-9]*$">nul if %errorlevel% equ 0 set pid=%arg1% echo pid: %pid% echo port: %port% if not ["%pid%"] == [""] ( goto :prepare_srv ) if not ["%port%"] == [""] ( goto :find_port ) if %as_remove_srv%==1 ( goto :remove_srv ) goto :usage :remove_srv echo Removing service: %srv_name% ... sc stop %srv_name% sc delete %srv_name% exit /b 0 :find_port netstat -nao |findstr LIST |findstr :%telnet_port% IF %ERRORLEVEL% EQU 0 ( echo Arthas agent already running, just connect to it! goto :attachSuccess ) @rem find pid by port echo %port%| findstr /r "^[1-9][0-9]*$">nul if %errorlevel% neq 0 ( echo port is not valid number! goto :usage ) echo Finding process of listening on port: %port% set query_pid_command='netstat -ano ^^^| findstr ":%port%" ^^^| findstr "LISTENING"' set pid= for /f "tokens=5" %%i in (%query_pid_command%) do ( set pid=%%i ) if "%pid%" == "" ( echo None process listening on port: %port% goto :end ) echo Target process pid is %pid% :prepare_srv REM check telnet port netstat -nao |findstr LIST |findstr :%telnet_port% IF %ERRORLEVEL% EQU 0 ( echo Arthas agent already running, just connect to it! goto :attachSuccess ) REM validate pid echo %pid%| findstr /r "^[1-9][0-9]*$">nul if %errorlevel% neq 0 ( echo PID is not valid number! goto :usage ) echo Preparing arthas service and injecting arthas agent to process: %pid% ... REM encode java path, avoid space in service args: ' ' -> '@' set srv_java_home=-java-home %JAVA_HOME: =@% set srv_args=-pid %pid% -telnet-port %telnet_port% -http-port %http_port% %srv_java_home% if %srv_interact%==1 ( sc start UI0Detect set srv_type=type= interact type= own set srv_binpath=binPath= "%basedir%\%filename% %srv_args% --service --interact" ) else ( set srv_type=type= own set srv_binpath=binPath= "%basedir%\%filename% %srv_args% --service" ) echo arthas srv type: %srv_type% echo arthas srv binPath: %srv_binpath% sc create %srv_name% start= demand %srv_type% %srv_binpath% sc config %srv_name% start= demand %srv_type% %srv_binpath% if %errorlevel% NEQ 0 ( echo Config Arthas service failed exit /b -1 ) sc stop %srv_name% REM fork start Arthas service, avoid blocking if %srv_interact%==1 ( start /B sc start %srv_name% )else ( start /B sc start %srv_name% > nul 2>&1 ) REM check and connect arthas .. echo Waitting for arthas agent ... set count=0 :waitfor_loop echo checking netstat -nao |findstr LIST |findstr :%telnet_port% IF %ERRORLEVEL% NEQ 0 ( set /a count+=1 if %count% geq 8 ( echo Arthas agent telnet port is not ready, maybe inject failed. goto :end ) ping -w 1 -n 2 0.0.0.0 > nul goto :waitfor_loop ) echo Arthas agent telnet port is ready. :attachSuccess WHERE telnet IF %ERRORLEVEL% NEQ 0 ( ECHO telnet wasn't found, please google how to install telnet under windows. ECHO Try to visit http://127.0.0.1:%http_port% to connecto arthas server. start http://127.0.0.1:%http_port% ) else ( telnet 127.0.0.1 %telnet_port% ) echo( echo Checking arthas telnet port [:%telnet_port%] ... netstat -nao |findstr LIST |findstr :%telnet_port% IF %ERRORLEVEL% EQU 0 ( echo Arthas agent is still running! goto :choice ) else ( echo Arthas agent is shutdown. goto :end ) :choice set /P c=Are you going to shutdown arthas agent [Y/N]? echo input: %c% if /I "%c%" EQU "Y" goto :shutdown_agent if /I "%c%" EQU "N" goto :end goto :choice :shutdown_agent echo Shutting down arthas ... %JAVACMD% -jar arthas-client.jar -c shutdown 127.0.0.1 %telnet_port% @rem check telnet port agian echo Checking arthas telnet port [:%telnet_port%] ... netstat -nao |findstr LIST |findstr :%telnet_port% IF %ERRORLEVEL% EQU 0 ( echo Arthas shutdown failed! ) else ( echo Arthas shutdown successfully. ) goto :end :usage echo Arthas for Windows Service. echo Usage: echo %filename% java_pid [option] .. echo %filename% [-pid java_pid] [option] .. echo %filename% [-port java_port] [option] .. echo( echo Options: echo -pid java_pid : Attach by java process pid echo -port java_port : Attach by java process listen port echo -telnet-port port : Change arthas telnet port echo -http-port port : Change arthas http/websocket port echo --interact : Enable windows service interactive UI, useful for debug echo --remove : Remove Arthas windows service echo --ignore-tools : Ignore checking JAVA_HOME\lib\tools.jar for jdk 9/10/11 echo( echo Example: echo %filename% 2351 echo %filename% 2351 -telnet-port 2000 -http-port 2001 echo %filename% -pid 2351 echo %filename% -port 8080 --interact echo %filename% --remove #remove arthas service exit /b -1 :noJavaHome echo JAVA_HOME: %JAVA_HOME% echo The JAVA_HOME environment variable is not defined correctly. echo It is needed to run this program. echo NB: JAVA_HOME should point to a JDK not a JRE. exit /b -1 :end ================================================ FILE: bin/as.bat ================================================ @echo off REM ---------------------------------------------------------------------------- REM program : Arthas REM author : Core Engine @ Taobao.com REM date : 2015-11-11 REM version : 3.0 REM ---------------------------------------------------------------------------- set ERROR_CODE=0 set TELNET_PORT=3658 set HTTP_PORT=8563 set BASEDIR=%~dp0 if ["%~1"]==[""] ( echo Example: echo %~nx0 452 echo %~nx0 452 --ignore-tools # for jdk 9/10/11 echo( echo Need the pid argument, you can run jps to list all java process ids. goto exit_bat ) set JAVA_TOOL_OPTIONS set AGENT_JAR=%BASEDIR%\arthas-agent.jar set CORE_JAR=%BASEDIR%\arthas-core.jar set PID=%1 echo %PID%| findstr /r "^[1-9][0-9]*$">nul if %errorlevel% neq 0 ( echo PID is not valid number! echo Example: echo %~nx0 452 echo %~nx0 452 --ignore-tools # for jdk 9/10/11 echo( echo Need the pid argument, you can run jps to list all java process ids. goto exit_bat ) REM parse extend args set ignoreTools=0 set exitProcess=0 for %%a in (%*) do ( if "%%a"=="--no-interact" set exitProcess=1 if "%%a"=="--ignore-tools" set ignoreTools=1 ) REM from https://stackoverflow.com/a/35445653 :read_params if not %1/==/ ( if not "%__var%"=="" ( if not "%__var:~0,1%"=="-" ( endlocal goto read_params ) endlocal & set %__var:~1%=%~1 ) else ( setlocal & set __var=%~1 ) shift goto read_params ) if not "%telnet-port%"=="" set TELNET_PORT=%telnet-port% if not "%http-port%"=="" set HTTP_PORT=%http-port% echo JAVA_HOME: %JAVA_HOME% echo telnet port: %TELNET_PORT% echo http port: %HTTP_PORT% REM Setup JAVA_HOME if "%JAVA_HOME%" == "" goto noJavaHome if not exist "%JAVA_HOME%\bin\java.exe" goto noJavaHome if %ignoreTools% == 1 ( echo Ignore tools.jar, make sure the java version ^>^= 9 ) else ( if not exist "%JAVA_HOME%\lib\tools.jar" ( echo Can not find lib\tools.jar under %JAVA_HOME%! echo If java version ^<^= 1.8, please make sure JAVA_HOME point to a JDK not a JRE. echo If java version ^>^= 9, try to run as.bat ^ --ignore-tools goto exit_bat ) set BOOT_CLASSPATH="-Xbootclasspath/a:%JAVA_HOME%\lib\tools.jar" ) set JAVACMD="%JAVA_HOME%\bin\java" goto okJava :noJavaHome echo The JAVA_HOME environment variable is not defined correctly. echo It is needed to run this program. echo NB: JAVA_HOME should point to a JDK not a JRE. goto exit_bat :okJava %JAVACMD% -Dfile.encoding=UTF-8 %BOOT_CLASSPATH% -jar "%CORE_JAR%" -pid "%PID%" -target-ip 127.0.0.1 -telnet-port %TELNET_PORT% -http-port %HTTP_PORT% -core "%CORE_JAR%" -agent "%AGENT_JAR%" if %ERRORLEVEL% NEQ 0 goto exit_bat if %exitProcess%==1 goto exit_bat goto attachSuccess :attachSuccess WHERE telnet IF %ERRORLEVEL% NEQ 0 ( ECHO telnet wasn't found, please google how to install telnet under windows. ECHO Try to visit http://127.0.0.1:%HTTP_PORT% to connecto arthas server. start http://127.0.0.1:%HTTP_PORT% ) else ( telnet 127.0.0.1 %TELNET_PORT% ) :exit_bat if "%exitProcess%"=="1" exit %ERROR_CODE% exit /B %ERROR_CODE% ================================================ FILE: bin/as.sh ================================================ #!/usr/bin/env bash # WIKI: https://arthas.aliyun.com/doc # This script only supports bash, do not support posix sh. # If you have the problem like Syntax error: "(" unexpected (expecting "fi"), # Try to run "bash -version" to check the version. # Try to visit WIKI to find a solution. # program : Arthas # author : Core Engine @ Taobao.com # date : 2026-03-09 # current arthas script version ARTHAS_SCRIPT_VERSION=4.1.8 # SYNOPSIS # rreadlink # DESCRIPTION # Resolves to its ultimate target, if it is a symlink, and # prints its canonical path. If it is not a symlink, its own canonical path # is printed. # A broken symlink causes an error that reports the non-existent target. # LIMITATIONS # - Won't work with filenames with embedded newlines or filenames containing # the string ' -> '. # COMPATIBILITY # This is a fully POSIX-compliant implementation of what GNU readlink's # -e option does. # EXAMPLE # In a shell script, use the following to get that script's true directory of origin: # trueScriptDir=$(dirname -- "$(rreadlink "$0")") rreadlink() ( # Execute the function in a *subshell* to localize variables and the effect of `cd`. target=$1 fname= targetDir= CDPATH= # Try to make the execution environment as predictable as possible: # All commands below are invoked via `command`, so we must make sure that # `command` itself is not redefined as an alias or shell function. # (Note that command is too inconsistent across shells, so we don't use it.) # `command` is a *builtin* in bash, dash, ksh, zsh, and some platforms do not # even have an external utility version of it (e.g, Ubuntu). # `command` bypasses aliases and shell functions and also finds builtins # in bash, dash, and ksh. In zsh, option POSIX_BUILTINS must be turned on for # that to happen. { \unalias command; \unset -f command; } >/dev/null 2>&1 [ -n "$ZSH_VERSION" ] && options[POSIX_BUILTINS]=on # make zsh find *builtins* with `command` too. while :; do # Resolve potential symlinks until the ultimate target is found. [ -L "$target" ] || [ -e "$target" ] || { command printf '%s\n' "ERROR: '$target' does not exist." >&2; return 1; } command cd "$(command dirname -- "$target")" # Change to target dir; necessary for correct resolution of target path. fname=$(command basename -- "$target") # Extract filename. [ "$fname" = '/' ] && fname='' # !! curiously, `basename /` returns '/' if [ -L "$fname" ]; then # Extract [next] target path, which may be defined # *relative* to the symlink's own directory. # Note: We parse `ls -l` output to find the symlink target # which is the only POSIX-compliant, albeit somewhat fragile, way. target=$(command ls -l "$fname") target=${target#* -> } continue # Resolve [next] symlink target. fi break # Ultimate target reached. done targetDir=$(command pwd -P) # Get canonical dir. path # Output the ultimate target's canonical path. # Note that we manually resolve paths ending in /. and /.. to make sure we have a normalized path. if [ "$fname" = '.' ]; then command printf '%s\n' "${targetDir%/}" elif [ "$fname" = '..' ]; then # Caveat: something like /var/.. will resolve to /private (assuming /var@ -> /private/var), i.e. the '..' is applied # AFTER canonicalization. command printf '%s\n' "$(command dirname -- "${targetDir}")" else command printf '%s\n' "${targetDir%/}/$fname" fi ) DIR=$(dirname -- "$(rreadlink "${BASH_SOURCE[0]}")") ############ Command Arguments ############ # define arthas's home ARTHAS_HOME= # define arthas's lib if [ -z "${ARTHAS_LIB_DIR}" ]; then ARTHAS_LIB_DIR=${HOME}/.arthas/lib else echo "[INFO] ARTHAS_LIB_DIR: ${ARTHAS_LIB_DIR}" fi # target process id to attach TARGET_PID= # target process id to attach, default 127.0.0.1 TARGET_IP= DEFAULT_TARGET_IP="127.0.0.1" # telnet port, default 3658 TELNET_PORT= DEFAULT_TELNET_PORT="3658" # http port, default 8563 HTTP_PORT= DEFAULT_HTTP_PORT="8563" # telnet session timeout seconds, default 1800 SESSION_TIMEOUT= # use specify version USE_VERSION= # remote repo to download arthas REPO_MIRROR= # use http to download arthas USE_HTTP=false # attach only, do not telnet connect ATTACH_ONLY=false # pass debug arguments to the attach java process DEBUG_ATTACH=false # arthas-client terminal height HEIGHT= # arthas-client terminal width WIDTH= # select target process by classname or JARfilename SELECT= # Verbose, print debug info. VERBOSE=false # command to execute COMMAND= # batch file to execute BATCH_FILE= # tunnel server url TUNNEL_SERVER= # agent id AGENT_ID= # stat report url STAT_URL= # app name APP_NAME= # username USERNAME= # password PASSWORD= # disabledCommands DISABLED_COMMANDS= ############ Command Arguments ############ # if arguments contains -c/--command or -f/--batch-file, BATCH_MODE will be true BATCH_MODE=false # define arthas's temp dir TMP_DIR=/tmp # arthas remote url # https://arthas.aliyun.com/download/3.1.7?mirror=aliyun REMOTE_DOWNLOAD_URL="https://arthas.aliyun.com/download/PLACEHOLDER_VERSION?mirror=PLACEHOLDER_REPO" # update timeout(sec) SO_TIMEOUT=5 # define JVM's OPS JVM_OPTS="" ARTHAS_OPTS="-Djava.awt.headless=true" OS_TYPE= case "$(uname -s)" in Linux*) OS_TYPE=Linux;; Darwin*) OS_TYPE=Mac;; CYGWIN*) OS_TYPE=Cygwin;; MINGW*) OS_TYPE=MinGw;; *) OS_TYPE="UNKNOWN" esac # check curl/grep/awk/telnet/unzip command if ! [ -x "$(command -v curl)" ]; then echo 'Error: curl is not installed. Try to use java -jar arthas-boot.jar' >&2 exit 1 fi if ! [ -x "$(command -v grep)" ]; then echo 'Error: grep is not installed. Try to use java -jar arthas-boot.jar' >&2 exit 1 fi if ! [ -x "$(command -v awk)" ]; then echo 'Error: awk is not installed. Try to use java -jar arthas-boot.jar' >&2 exit 1 fi if ! [ -x "$(command -v telnet)" ]; then echo 'Error: telnet is not installed. Try to use java -jar arthas-boot.jar' >&2 exit 1 fi if ! [ -x "$(command -v unzip)" ]; then echo 'Error: unzip is not installed. Try to use java -jar arthas-boot.jar' >&2 exit 1 fi # exit shell with err_code # $1 : err_code # $2 : err_msg exit_on_err() { [[ ! -z "${2}" ]] && echo "${2}" 1>&2 exit ${1} } # get with default value # $1 : target value # $2 : default value default() { [[ ! -z "${1}" ]] && echo "${1}" || echo "${2}" } # check arthas permission check_permission() { [ ! -w "${HOME}" ] \ && exit_on_err 1 "permission denied, ${HOME} is not writable." } # reset arthas work environment # reset some options for env reset_for_env() { unset JAVA_TOOL_OPTIONS # init ARTHAS' lib mkdir -p "${ARTHAS_LIB_DIR}" \ || exit_on_err 1 "create ${ARTHAS_LIB_DIR} fail." # if env define the JAVA_HOME, use it first # if is alibaba opts, use alibaba ops's default JAVA_HOME [ -z "${JAVA_HOME}" ] && [ -d /opt/taobao/java ] && JAVA_HOME=/opt/taobao/java if [[ (-z "${JAVA_HOME}") && ( -e "/usr/libexec/java_home") ]]; then # for mac JAVA_HOME=`/usr/libexec/java_home` fi if [ -z "${JAVA_HOME}" ]; then # try to find JAVA_HOME from java command local JAVA_COMMAND_PATH=$( rreadlink $(type -p java) ) JAVA_HOME=$(echo "$JAVA_COMMAND_PATH" | sed -n 's/\/bin\/java$//p') fi # iterater through candidates to find a proper JAVA_HOME at least contains tools.jar which is required by arthas. if [ ! -d "${JAVA_HOME}" ]; then JAVA_HOME_CANDIDATES=($(ps aux | grep java | grep -v 'grep java' | awk '{print $11}' | sed -n 's/\/bin\/java$//p')) for JAVA_HOME_TEMP in ${JAVA_HOME_CANDIDATES[@]}; do if [ -f "${JAVA_HOME_TEMP}/lib/tools.jar" ]; then JAVA_HOME=`rreadlink "${JAVA_HOME_TEMP}"` break fi done fi if [ -z "${JAVA_HOME}" ]; then exit_on_err 1 "Can not find JAVA_HOME, please set \$JAVA_HOME bash env first." fi # maybe 1.8.0_162 , 11-ea local JAVA_VERSION local IFS=$'\n' # remove \r for Cygwin local lines=$("${JAVA_HOME}"/bin/java -version 2>&1 | tr '\r' '\n') for line in $lines; do if [[ (-z $JAVA_VERSION) && ($line = *"version \""*) ]] then local ver=$(echo $line | sed -e 's/.*version "\(.*\)"\(.*\)/\1/; 1q') # on macOS, sed doesn't support '?' if [[ $ver = "1."* ]] then JAVA_VERSION=$(echo $ver | sed -e 's/1\.\([0-9]*\)\(.*\)/\1/; 1q') else JAVA_VERSION=$(echo $ver | sed -e 's/\([0-9]*\)\(.*\)/\1/; 1q') fi fi done # when java version less than 9, we can use tools.jar to confirm java home. # when java version greater than 9, there is no tools.jar. if [[ "$JAVA_VERSION" -lt 9 ]];then # possible java homes javaHomes=("${JAVA_HOME%%/}" "${JAVA_HOME%%/}/.." "${JAVA_HOME%%/}/../..") for javaHome in ${javaHomes[@]} do toolsJar="$javaHome/lib/tools.jar" if [ -f $toolsJar ]; then JAVA_HOME=$( rreadlink $javaHome ) BOOT_CLASSPATH=-Xbootclasspath/a:$( rreadlink $toolsJar ) break fi done [ -z "${BOOT_CLASSPATH}" ] && exit_on_err 1 "tools.jar was not found, so arthas could not be launched!" fi echo "[INFO] JAVA_HOME: ${JAVA_HOME}" # reset CHARSET for alibaba opts, we use GBK [[ -x /opt/taobao/java ]] && JVM_OPTS="-Dinput.encoding=GBK ${JVM_OPTS} " } # get latest version from local get_local_version() { ls "${ARTHAS_LIB_DIR}" | sort | tail -1 } get_repo_url() { local repoUrl="${REPO_MIRROR}" if [ "$USE_HTTP" = true ] ; then repoUrl=${repoUrl/https/http} fi echo "${repoUrl}" } # get latest version from remote get_remote_version() { curl -sLk "https://arthas.aliyun.com/api/latest_version" } # check version greater version_gt() { local remote_version=$1 local arthas_local_version=$2 [[ "$remote_version" > "$arthas_local_version" ]] && return 0 || return 1 } # update arthas if necessary update_if_necessary() { local update_version=$1 if [ ! -d "${ARTHAS_LIB_DIR}/${update_version}" ]; then echo "updating version ${update_version} ..." local temp_target_lib_dir="$TMP_DIR/temp_${update_version}_$$" local temp_target_lib_zip="${temp_target_lib_dir}/arthas-${update_version}-bin.zip" local target_lib_dir="${ARTHAS_LIB_DIR}/${update_version}/arthas" # clean rm -rf "${temp_target_lib_dir}" rm -rf "${target_lib_dir}" mkdir -p "${temp_target_lib_dir}" \ || exit_on_err 1 "create ${temp_target_lib_dir} fail." # download current arthas version local downloadUrl="${REMOTE_DOWNLOAD_URL//PLACEHOLDER_REPO/$(get_repo_url)}" downloadUrl="${downloadUrl//PLACEHOLDER_VERSION/${update_version}}" echo "Download arthas from: ${downloadUrl}" curl \ -#Lk \ --connect-timeout ${SO_TIMEOUT} \ -o "${temp_target_lib_zip}" \ "${downloadUrl}" \ || return 1 # unzip arthas lib if ! (unzip "${temp_target_lib_zip}" -d "${temp_target_lib_dir}") ; then rm -rf "${temp_target_lib_dir}" "${ARTHAS_LIB_DIR}/${update_version}" return 1 fi mkdir -p "${ARTHAS_LIB_DIR}/${update_version}" # rename mv "${temp_target_lib_dir}" "${target_lib_dir}" || return 1 # print success echo "update completed." fi } # jps command may crash, so need to check it check_jps() { "${JAVA_HOME}/bin/jps" > /dev/null 2>&1 local exit_code=$? if [ $exit_code -ne 0 ]; then echo "jps command failed with exit code ${exit_code}" >&2 fi return $exit_code } call_jps() { check_jps local exit_code=$? if [[ "$exit_code" -eq 0 ]]; then # jps command is ok local jps_command=("${JAVA_HOME}/bin/jps" "-l") if [ "${VERBOSE}" = true ] ; then jps_command=("${JAVA_HOME}/bin/jps" "-l" "-v") fi local jps_output=$("${jps_command[@]}") echo "$jps_output" else # jps command failed, use ps and grep ps_output=$(ps aux | grep java | grep -v grep | awk '{print $2" "$11}') echo "$ps_output" fi } # the usage usage() { echo " Usage: $0 [-h] [--target-ip ] [--telnet-port ] [--http-port ] [--session-timeout ] [--arthas-home ] [--tunnel-server ] [--agent-id ] [--stat-url ] [--app-name ] [--username ] [--password ] [--disabled-commands ] [--use-version ] [--repo-mirror ] [--versions] [--use-http] [--attach-only] [-c ] [-f ] [-v] [pid] NOTE: Arthas 4 supports JDK 8+. If you need to diagnose applications running on JDK 6/7, you can use Arthas 3. Options and Arguments: -h,--help Print usage --target-ip The target jvm listen ip, default 127.0.0.1 --telnet-port The target jvm listen telnet port, default 3658 --http-port The target jvm listen http port, default 8563 --session-timeout The session timeout seconds, default 1800 (30min) --arthas-home The arthas home --use-version Use special version arthas --repo-mirror Use special remote repository mirror, value is center/aliyun or http repo url. --versions List local and remote arthas versions --use-http Enforce use http to download, default use https --attach-only Attach target process only, do not connect --debug-attach Debug attach agent --tunnel-server Remote tunnel server url --agent-id Special agent id --app-name Special app name --username Special username --password Special password --disabled-commands Disable special commands --select select target process by classname or JARfilename -c,--command Command to execute, multiple commands separated by ; -f,--batch-file The batch file to execute --height arthas-client terminal height --width arthas-client terminal width -v,--verbose Verbose, print debug info. Target pid EXAMPLES: ./as.sh ./as.sh --telnet-port 9999 --http-port -1 ./as.sh --username admin --password ./as.sh --tunnel-server 'ws://192.168.10.11:7777/ws' --app-name demoapp ./as.sh --tunnel-server 'ws://192.168.10.11:7777/ws' --agent-id bvDOe8XbTM2pQWjF4cfw ./as.sh --stat-url 'http://192.168.10.11:8080/api/stat' ./as.sh -c 'sysprop; thread' ./as.sh -f batch.as ./as.sh --use-version 4.1.8 ./as.sh --session-timeout 3600 ./as.sh --attach-only ./as.sh --disabled-commands stop,dump ./as.sh --select math-game ./as.sh --repo-mirror aliyun --use-http WIKI: https://arthas.aliyun.com/doc Here is the list of possible java process(es) to attatch: " call_jps | grep -v sun.tools.jps.Jps } # list arthas versions list_versions() { echo "Arthas versions under ${ARTHAS_LIB_DIR}:" ls -1 "${ARTHAS_LIB_DIR}" } # find the process tcp listen at the port # $1 : port number find_listen_port_process() { if [ -x "$(command -v lsof)" ]; then echo $(lsof -t -s TCP:LISTEN -i TCP:$1) fi } getTargetIPOrDefault() { local targetIP=${DEFAULT_TARGET_IP} if [ "${TARGET_IP}" ]; then targetIP=${TARGET_IP} fi echo $targetIP } getTelnetPortOrDefault() { local telnetPort=${DEFAULT_TELNET_PORT} if [ "${TELNET_PORT}" ]; then telnetPort=${TELNET_PORT} fi echo $telnetPort } getHttpPortOrDefault() { local httpPort=${DEFAULT_HTTP_PORT} if [ "${HTTP_PORT}" ]; then httpPort=${HTTP_PORT} fi echo $httpPort } # Status from com.taobao.arthas.client.TelnetConsole # Execute commands timeout STATUS_EXEC_TIMEOUT=100 # Execute commands error STATUS_EXEC_ERROR=101 # find the process pid of target telnet port # maybe another user start an arthas server at the same port, but invisible for current user find_listen_port_process_by_client() { local arthas_lib_dir="${ARTHAS_HOME}" # http://www.inonit.com/cygwin/faq/ if [ "${OS_TYPE}" = "Cygwin" ]; then arthas_lib_dir=`cygpath -wp "$arthas_lib_dir"` fi "${JAVA_HOME}/bin/java" ${ARTHAS_OPTS} ${JVM_OPTS} \ -jar "${arthas_lib_dir}/arthas-client.jar" \ $(getTargetIPOrDefault) \ $(getTelnetPortOrDefault) \ -c "session" \ --execution-timeout 2000 \ 2>&1 # return java process exit status code ! return $? } parse_arguments() { POSITIONAL=() while [[ $# -gt 0 ]] do key="$1" case $key in -h|--help) usage exit 0 ;; --versions) list_versions exit 0 ;; --target-ip) TARGET_IP="$2" shift # past argument shift # past value ;; --telnet-port) TELNET_PORT="$2" shift # past argument shift # past value ;; --http-port) HTTP_PORT="$2" shift # past argument shift # past value ;; --session-timeout) SESSION_TIMEOUT="$2" shift # past argument shift # past value ;; --arthas-home) ARTHAS_HOME="$2" shift # past argument shift # past value ;; --use-version) USE_VERSION="$2" shift # past argument shift # past value ;; --repo-mirror) REPO_MIRROR="$2" shift # past argument shift # past value ;; -c|--command) COMMAND="$2" BATCH_MODE=true shift # past argument shift # past value ;; -f|--batch-file) BATCH_FILE="$2" BATCH_MODE=true shift # past argument shift # past value ;; --tunnel-server) TUNNEL_SERVER="$2" shift # past argument shift # past value ;; --agent-id) AGENT_ID="$2" shift # past argument shift # past value ;; --stat-url) STAT_URL="$2" shift # past argument shift # past value ;; --app-name) APP_NAME="$2" shift # past argument shift # past value ;; --username) USERNAME="$2" shift # past argument shift # past value ;; --password) PASSWORD="$2" shift # past argument shift # past value ;; --disabled-commands) DISABLED_COMMANDS="$2" shift # past argument shift # past value ;; --use-http) USE_HTTP=true shift # past argument ;; --attach-only) ATTACH_ONLY=true shift # past argument ;; --debug-attach) DEBUG_ATTACH=true if [ -z "$JPDA_TRANSPORT" ]; then JPDA_TRANSPORT="dt_socket" fi if [ -z "$JPDA_ADDRESS" ]; then JPDA_ADDRESS="8888" fi if [ -z "$JPDA_SUSPEND" ]; then JPDA_SUSPEND="y" fi if [ -z "$JPDA_OPTS" ]; then JPDA_OPTS="-agentlib:jdwp=transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND" fi ARTHAS_OPTS="$JPDA_OPTS $ARTHAS_OPTS" shift # past argument ;; --height) HEIGHT="$2" shift # past argument shift # past value ;; --width) WIDTH="$2" shift # past argument shift # past value ;; --select) SELECT="$2" shift # past argument shift # past value ;; -v|--verbose) VERBOSE=true shift # past argument ;; --default) DEFAULT=YES shift # past argument ;; *) # unknown option POSITIONAL+=("$1") # save it in an array for later shift # past argument ;; esac done set -- "${POSITIONAL[@]}" # restore positional parameters if [[ -n $1 ]]; then # parse pid TARGET_PID=$(echo ${1}|awk -F "@" '{print $1}'); local targetIp=$(echo ${1}|awk -F "@|:" '{print $2}'); [[ "$targetIp" ]] && TARGET_IP=$targetIp local telnetPort=$(echo ${1}|awk -F ":" '{print $2}'); [[ "$telnetPort" ]] && TELNET_PORT=$telnetPort local httpPort=$(echo ${1}|awk -F ":" '{print $3}'); [[ "$httpPort" ]] && HTTP_PORT=$httpPort fi # check telnet port/http port local telnetPortPid local httpPortPid local telnetPortOrDefault=$(getTelnetPortOrDefault) local httpPortOrDefault=$(getHttpPortOrDefault) if [[ $telnetPortOrDefault > 0 ]]; then telnetPortPid=$(find_listen_port_process $telnetPortOrDefault) if [ $telnetPortPid ]; then echo "[INFO] Process $telnetPortPid already using port $telnetPortOrDefault" fi fi if [[ $httpPortOrDefault > 0 ]]; then httpPortPid=$(find_listen_port_process $httpPortOrDefault) if [ $telnetPortPid ]; then echo "[INFO] Process $httpPortPid already using port $httpPortOrDefault" fi fi if [ -z ${REPO_MIRROR} ]; then REPO_MIRROR="center" # if timezone is +0800, set REPO_MIRROR to aliyun if [[ -x "$(command -v date)" ]] && [[ $(date +%z) == "+0800" ]]; then REPO_MIRROR="aliyun" fi fi # try to find target pid by --select option if [ -z ${TARGET_PID} ] && [ ${SELECT} ]; then local IFS=$'\n' CANDIDATES=($(call_jps | grep -v sun.tools.jps.Jps | grep "${SELECT}" | awk '{print $0}')) if [ ${#CANDIDATES[@]} -eq 1 ]; then TARGET_PID=`echo ${CANDIDATES[0]} | cut -d ' ' -f 1` fi fi # check pid if [ -z ${TARGET_PID} ]; then # interactive mode local IFS=$'\n' CANDIDATES=($(call_jps | grep -v sun.tools.jps.Jps | awk '{print $0}')) if [ ${#CANDIDATES[@]} -eq 0 ]; then echo "Error: no available java process to attach." return 1 fi echo "Found existing java process, please choose one and input the serial number of the process, eg : 1. Then hit ENTER." index=0 suggest=1 # auto select tomcat/pandora-boot process for process in "${CANDIDATES[@]}"; do index=$(($index+1)) if [ $(echo ${process} | grep -c org.apache.catalina.startup.Bootstrap) -eq 1 ] \ || [ $(echo ${process} | grep -c com.taobao.pandora.boot.loader.SarLauncher) -eq 1 ] then suggest=${index} break fi done index=0 for process in "${CANDIDATES[@]}"; do index=$(($index+1)) if [ ${index} -eq ${suggest} ]; then echo "* [$index]: ${process}" else echo " [$index]: ${process}" fi done read choice if [ -z ${choice} ]; then choice=${suggest} fi TARGET_PID=`echo ${CANDIDATES[$(($choice-1))]} | cut -d ' ' -f 1` # check the process already using telnet port if equals to target pid if [[ ($telnetPortPid) && ($TARGET_PID != $telnetPortPid) ]]; then print_telnet_port_pid_error exit 1 fi if [[ ($httpPortPid) && ($TARGET_PID != $httpPortPid) ]]; then echo "Target process $TARGET_PID is not the process using port $(getHttpPortOrDefault), you will connect to an unexpected process." echo "1. Try to restart as.sh, select process $httpPortPid, shutdown it first with running the 'stop' command." echo "2. Try to use different http port, for example: as.sh --telnet-port 9998 --http-port 9999" exit 1 fi elif [ -z ${TARGET_PID} ]; then # batch mode is enabled, no interactive process selection. echo "Illegal arguments, the is required." 1>&2 return 1 fi } # attach arthas to target jvm attach_jvm() { local arthas_lib_dir=$1 # http://www.inonit.com/cygwin/faq/ if [ "${OS_TYPE}" = "Cygwin" ]; then arthas_lib_dir=`cygpath -wp "$arthas_lib_dir"` fi echo "Attaching to ${TARGET_PID} using version ${1}..." local java_command=("${JAVA_HOME}"/bin/java) if [ "${BOOT_CLASSPATH}" ]; then java_command+=("${BOOT_CLASSPATH}") fi local tempArgs=() if [ "${TUNNEL_SERVER}" ]; then tempArgs+=("-tunnel-server") tempArgs+=("${TUNNEL_SERVER}") fi if [ "${AGENT_ID}" ]; then tempArgs+=("-agent-id") tempArgs+=("${AGENT_ID}") fi if [ "${STAT_URL}" ]; then tempArgs+=("-stat-url") tempArgs+=("${STAT_URL}") fi if [ "${APP_NAME}" ]; then tempArgs+=("-app-name") tempArgs+=("${APP_NAME}") fi if [ "${USERNAME}" ]; then tempArgs+=("-username") tempArgs+=("${USERNAME}") fi if [ "${PASSWORD}" ]; then tempArgs+=("-password") tempArgs+=("${PASSWORD}") fi if [ "${DISABLED_COMMANDS}" ]; then tempArgs+=("-disabled-commands") tempArgs+=("${DISABLED_COMMANDS}") fi if [ "${TARGET_IP}" ]; then tempArgs+=("-target-ip") tempArgs+=("${TARGET_IP}") fi if [ "${TELNET_PORT}" ]; then tempArgs+=("-telnet-port") tempArgs+=("${TELNET_PORT}") fi if [ "${HTTP_PORT}" ]; then tempArgs+=("-http-port") tempArgs+=("${HTTP_PORT}") fi if [ "${SESSION_TIMEOUT}" ]; then tempArgs+=("-session-timeout") tempArgs+=("${SESSION_TIMEOUT}") fi "${java_command[@]}" \ ${ARTHAS_OPTS} ${JVM_OPTS} \ -jar "${arthas_lib_dir}/arthas-core.jar" \ -pid ${TARGET_PID} \ "${tempArgs[@]}" \ -core "${arthas_lib_dir}/arthas-core.jar" \ -agent "${arthas_lib_dir}/arthas-agent.jar" } sanity_check() { # only Linux/Mac support ps to find process, Cygwin/MinGw may fail. if ([ "${OS_TYPE}" != "Linux" ] && [ "${OS_TYPE}" != "Mac" ]); then return fi # 0 check whether the pid exist local pid=$(ps -p ${TARGET_PID} -o pid= 2>&1 ) # get ps command exit code local exitCode="$(ps -p ${TARGET_PID} -o pid= > /dev/null 2>&1; echo $?)" # If ps exist code not 0, the TARGET_PID process maybe not exist or ps do not support -p options. if [ "${exitCode}" != "0" ]; then # if ps do not support -p or -o , ${pid} will be error message, just return if [ -n "${pid}" ]; then return fi fi if [ -z ${pid} ]; then exit_on_err 1 "The target pid (${TARGET_PID}) does not exist!" fi # 1 check the current user matches the process owner local current_user=$(id -u -n) # the last '=' after 'user' eliminates the column header local target_user=$(ps -p "${TARGET_PID}" -o user=) if [ "$current_user" != "$target_user" ]; then echo "The current user ($current_user) does not match with the owner of process ${TARGET_PID} ($target_user)." echo "To solve this, choose one of the following command:" echo " 1) sudo su $target_user && ./as.sh" echo " 2) sudo -u $target_user -EH ./as.sh" exit_on_err 1 fi } port_pid_check() { if [[ $(getTelnetPortOrDefault) > 0 ]]; then local telnet_output local find_process_status # declare local var before var=$() telnet_output=$(find_listen_port_process_by_client) find_process_status=$? #echo "find_process_status: $find_process_status" #echo "telnet_output: $telnet_output" #check return code if [[ $find_process_status -eq $STATUS_EXEC_TIMEOUT ]]; then print_telnet_port_used_error "detection timeout" exit 1 elif [[ $find_process_status -eq $STATUS_EXEC_ERROR ]]; then print_telnet_port_used_error "detection error" exit 1 fi if [[ -n $telnet_output ]]; then # check JAVA_PID telnetPortPid=$(echo "$telnet_output" | grep JAVA_PID | awk '{ print $2 }') #echo "telnetPortPid: $telnetPortPid" # check the process already using telnet port if equals to target pid if [[ -n $telnetPortPid && ($TARGET_PID != $telnetPortPid) ]]; then print_telnet_port_pid_error exit 1 fi fi fi } print_telnet_port_pid_error() { echo "[ERROR] The telnet port $(getTelnetPortOrDefault) is used by process $telnetPortPid instead of target process $TARGET_PID, you will connect to an unexpected process." echo "[ERROR] 1. Try to restart as.sh, select process $telnetPortPid, shutdown it first with running the 'stop' command." echo "[ERROR] 2. Try to stop the existing arthas instance: java -jar arthas-client.jar 127.0.0.1 $(getTelnetPortOrDefault) -c \"stop\"" echo "[ERROR] 3. Try to use different telnet port, for example: as.sh --telnet-port 9998 --http-port -1" } print_telnet_port_used_error() { local error_msg=$1 echo "[ERROR] The telnet port $(getTelnetPortOrDefault) is used, but process $error_msg, you will connect to an unexpected process." echo "[ERROR] Try to use different telnet port, for example: as.sh --telnet-port 9998 --http-port -1" } # active console # $1 : arthas_lib_dir active_console() { local arthas_lib_dir=$1 # http://www.inonit.com/cygwin/faq/ if [ "${OS_TYPE}" = "Cygwin" ]; then arthas_lib_dir=`cygpath -wp $arthas_lib_dir` fi if [ "${BATCH_MODE}" = "true" ]; then local tempArgs=() if [ "${HEIGHT}" ]; then tempArgs+=("--height") tempArgs+=("${HEIGHT}") fi if [ "${WIDTH}" ]; then tempArgs+=("--width") tempArgs+=("${WIDTH}") fi if [ "${COMMAND}" ] ; then "${JAVA_HOME}/bin/java" ${ARTHAS_OPTS} ${JVM_OPTS} \ -jar "${arthas_lib_dir}/arthas-client.jar" \ $(getTargetIPOrDefault) \ $(getTelnetPortOrDefault) \ "${tempArgs[@]}" \ -c "${COMMAND}" fi if [ "${BATCH_FILE}" ] ; then "${JAVA_HOME}/bin/java" ${ARTHAS_OPTS} ${JVM_OPTS} \ -jar "${arthas_lib_dir}/arthas-client.jar" \ $(getTargetIPOrDefault) \ $(getTelnetPortOrDefault) \ "${tempArgs[@]}" \ -f ${BATCH_FILE} fi elif type telnet 2>&1 >> /dev/null; then # use telnet if [[ $(command -v telnet) == *"system32"* ]] ; then # Windows/system32/telnet.exe can not run in Cygwin/MinGw echo "It seems that current bash is under Windows. $(command -v telnet) can not run under bash." echo "Please start cmd.exe from Windows start menu, and then run telnet $(getTargetIPOrDefault) $(getTelnetPortOrDefault) to connect to target process." echo "Or visit http://127.0.0.1:$(getHttpPortOrDefault) to connect to target process." return 1 fi echo "telnet connecting to arthas server... current timestamp is `date +%s`" telnet $(getTargetIPOrDefault) $(getTelnetPortOrDefault) else echo "'telnet' is required." 1>&2 return 1 fi } # the main main() { echo "Arthas script version: $ARTHAS_SCRIPT_VERSION" check_permission reset_for_env parse_arguments "${@}" \ || exit_on_err 1 "$(usage)" # try to find arthas home from --use-version if [[ (-z "${ARTHAS_HOME}") && (! -z "${USE_VERSION}") ]]; then if [[ ! -d "${ARTHAS_LIB_DIR}/${USE_VERSION}/arthas" ]] ; then update_if_necessary "${USE_VERSION}" || echo "update fail, ignore this update." 1>&2 fi ARTHAS_HOME="${ARTHAS_LIB_DIR}/${USE_VERSION}/arthas" fi # try to set arthas home from as.sh directory if [ -z "${ARTHAS_HOME}" ] ; then [[ -a "${DIR}/arthas-core.jar" ]] \ && [[ -a "${DIR}/arthas-agent.jar" ]] \ && [[ -a "${DIR}/arthas-spy.jar" ]] \ && ARTHAS_HOME="${DIR}" fi # try to find arthas under ~/.arthas/lib if [ -z "${ARTHAS_HOME}" ] ; then local remote_version=$(get_remote_version) local arthas_local_version=$(get_local_version) if $(version_gt $remote_version $arthas_local_version) ; then update_if_necessary "${remote_version}" || echo "update fail, ignore this update." 1>&2 fi local arthas_local_version=$(get_local_version) ARTHAS_HOME="${ARTHAS_LIB_DIR}/${arthas_local_version}/arthas" fi echo "Arthas home: ${ARTHAS_HOME}" if [ ! -d "${ARTHAS_HOME}" ] ; then exit_on_err 1 "Arthas home is not a directory, please delete it and retry." fi sanity_check port_pid_check echo "Calculating attach execution time..." time (attach_jvm "${ARTHAS_HOME}" || exit 1) if [ $? -ne 0 ]; then exit_on_err 1 "attach to target jvm (${TARGET_PID}) failed, check ${HOME}/logs/arthas/arthas.log or stderr of target jvm for any exceptions." fi echo "Attach success." if [ ${ATTACH_ONLY} = false ]; then active_console "${ARTHAS_HOME}" fi } main "${@}" ================================================ FILE: bin/install-local.sh ================================================ #!/bin/bash # define newest arthas's version ARTHAS_VERSION=${project.version} # define newest arthas's lib home ARTHAS_LIB_HOME=${HOME}/.arthas/lib/${ARTHAS_VERSION}/arthas # exit shell with err_code # $1 : err_code # $2 : err_msg exit_on_err() { [[ ! -z "${2}" ]] && echo "${2}" 1>&2 exit ${1} } # install to local if necessary if [[ ! -x ${ARTHAS_LIB_HOME} ]]; then # install to local mkdir -p ${ARTHAS_LIB_HOME} \ || exit_on_err 1 "create target directory ${ARTHAS_LIB_HOME} failed." # copy jar files cp *.jar ${ARTHAS_LIB_HOME}/ # make it -x chmod +x ./as.sh fi echo "install to local succeeded." ================================================ FILE: bin/install.sh ================================================ #! /bin/bash # temp file of as.sh TEMP_ARTHAS_FILE="./as.sh.$$" # target file of as.sh TARGET_ARTHAS_FILE="./as.sh" # update timeout(sec) SO_TIMEOUT=60 # default downloading url ARTHAS_FILE_URL="https://arthas.aliyun.com/as.sh" # exit shell with err_code # $1 : err_code # $2 : err_msg exit_on_err() { [[ ! -z "${2}" ]] && echo "${2}" 1>&2 exit ${1} } # check permission to download && install [[ ! -w ./ ]] && exit_on_err 1 "permission denied, target directory ./ was not writable." if [[ $# -gt 1 ]] && [[ $1 = "--url" ]]; then shift ARTHAS_FILE_URL=$1 shift fi # download from aliyunos echo "downloading... ${TEMP_ARTHAS_FILE}" curl \ -sLk \ --connect-timeout ${SO_TIMEOUT} \ ${ARTHAS_FILE_URL} \ -o ${TEMP_ARTHAS_FILE} \ || exit_on_err 1 "download failed!" # write or overwrite local file rm -rf as.sh mv ${TEMP_ARTHAS_FILE} ${TARGET_ARTHAS_FILE} chmod +x ${TARGET_ARTHAS_FILE} # done echo "Arthas install succeeded." ================================================ FILE: bin/jps.sh ================================================ #!/bin/sh # jps.sh version 1.0.2 # there might be multiple java processes, e.g. log-agent JPS_CMDS=($(ps aux | grep java | grep -v 'grep java' | awk '{print $11}' | sed -n 's/java$/jps/p')) # find the first executable jps command JPS_CMD="" for jps in ${JPS_CMDS[@]}; do if [ -x $jps ]; then JPS_CMD=$jps break fi done if [ "$JPS_CMD" == "" ]; then echo "No Java Process Found on this Machine." exit 1 else result=`$JPS_CMD -lmv | grep -v jps` if [ "$result" == "" ]; then ps aux | grep -E '^admin.*java.*' | grep -v grep | awk 'BEGIN{ORS=""}{print $2" ";for(j=NF;j>=12;j--){if(match($j, /^\-[a-zA-Z0-9]/)) {break;} } for(i=j+1;i<=NF;i++) {print $i" "} for(i=12;i<=j;i++) {print $i" "} print "\n" }' else echo "$result" fi fi ================================================ FILE: boot/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-boot arthas-boot https://github.com/alibaba/arthas com.taobao.arthas arthas-common ${project.version} com.alibaba.middleware cli org.junit.vintage junit-vintage-engine test org.junit.jupiter junit-jupiter test arthas-boot org.apache.maven.plugins maven-assembly-plugin single package jar-with-dependencies com.taobao.arthas.boot.Bootstrap core engine team, middleware group, alibaba inc. ${project.name} ${project.version} ${project.name} ${project.version} ================================================ FILE: boot/src/main/java/com/taobao/arthas/boot/Bootstrap.java ================================================ package com.taobao.arthas.boot; import static com.taobao.arthas.boot.ProcessUtils.STATUS_EXEC_ERROR; import static com.taobao.arthas.boot.ProcessUtils.STATUS_EXEC_TIMEOUT; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.net.URL; import java.net.URLClassLoader; import java.security.CodeSource; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.InputMismatchException; import java.util.List; import java.util.Scanner; import java.util.TimeZone; import java.util.concurrent.TimeUnit; import java.util.logging.Level; import javax.xml.parsers.ParserConfigurationException; import org.xml.sax.SAXException; import com.taobao.arthas.common.AnsiLog; import com.taobao.arthas.common.JavaVersionUtils; import com.taobao.arthas.common.SocketUtils; import com.taobao.arthas.common.UsageRender; import com.taobao.middleware.cli.CLI; import com.taobao.middleware.cli.CommandLine; import com.taobao.middleware.cli.UsageMessageFormatter; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.CLIConfigurator; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Option; import com.taobao.middleware.cli.annotations.Summary; /** * @author hengyunabc 2018-10-26 * */ @Name("arthas-boot") @Summary("Bootstrap Arthas") @Description("NOTE: Arthas 4 supports JDK 8+. If you need to diagnose applications running on JDK 6/7, you can use Arthas 3.\n\n" +"EXAMPLES:\n" + " java -jar arthas-boot.jar \n" + " java -jar arthas-boot.jar --telnet-port 9999 --http-port -1\n" + " java -jar arthas-boot.jar --username admin --password \n" + " java -jar arthas-boot.jar --tunnel-server 'ws://192.168.10.11:7777/ws' --app-name demoapp\n" + " java -jar arthas-boot.jar --tunnel-server 'ws://192.168.10.11:7777/ws' --agent-id bvDOe8XbTM2pQWjF4cfw\n" + " java -jar arthas-boot.jar --stat-url 'http://192.168.10.11:8080/api/stat'\n" + " java -jar arthas-boot.jar -c 'sysprop; thread' \n" + " java -jar arthas-boot.jar -f batch.as \n" + " java -jar arthas-boot.jar --use-version 4.1.8\n" + " java -jar arthas-boot.jar --versions\n" + " java -jar arthas-boot.jar --select math-game\n" + " java -jar arthas-boot.jar --session-timeout 3600\n" + " java -jar arthas-boot.jar --attach-only\n" + " java -jar arthas-boot.jar --disabled-commands stop,dump\n" + " java -jar arthas-boot.jar --repo-mirror aliyun --use-http\n" + "WIKI:\n" + " https://arthas.aliyun.com/doc\n") public class Bootstrap { private static final int DEFAULT_TELNET_PORT = 3658; private static final int DEFAULT_HTTP_PORT = 8563; private static final String DEFAULT_TARGET_IP = "127.0.0.1"; private static File ARTHAS_LIB_DIR; private boolean help = false; private long pid = -1; private String targetIp; private Integer telnetPort; private Integer httpPort; /** * @see com.taobao.arthas.core.config.Configure#DEFAULT_SESSION_TIMEOUT_SECONDS */ private Long sessionTimeout; private Integer height = null; private Integer width = null; private boolean verbose = false; /** * 
     * The directory contains arthas-core.jar/arthas-client.jar/arthas-spy.jar.
     * 1. When use-version is not empty, try to find arthas home under ~/.arthas/lib
     * 2. Try set the directory where arthas-boot.jar is located to arthas home
     * 3. Try to download from remote repo
     *
*/ private String arthasHome; /** * under ~/.arthas/lib */ private String useVersion; /** * list local and remote versions */ private boolean versions; /** * download from remo repository. if timezone is +0800, default value is 'aliyun', else is 'center'. */ private String repoMirror; /** * enforce use http to download arthas. default use https */ private boolean useHttp = false; private boolean attachOnly = false; private String command; private String batchFile; private String tunnelServer; private String agentId; private String appName; private String username; private String password; private String statUrl; private String select; private String disabledCommands; static { String arthasLibDirEnv = System.getenv("ARTHAS_LIB_DIR"); if (arthasLibDirEnv != null) { ARTHAS_LIB_DIR = new File(arthasLibDirEnv); AnsiLog.info("ARTHAS_LIB_DIR: " + arthasLibDirEnv); } else { ARTHAS_LIB_DIR = new File( System.getProperty("user.home") + File.separator + ".arthas" + File.separator + "lib"); } try { ARTHAS_LIB_DIR.mkdirs(); } catch (Throwable t) { //ignore } if (!ARTHAS_LIB_DIR.exists()) { // try to set a temp directory ARTHAS_LIB_DIR = new File(System.getProperty("java.io.tmpdir") + File.separator + ".arthas" + File.separator + "lib"); try { ARTHAS_LIB_DIR.mkdirs(); } catch (Throwable e) { // ignore } } if (!ARTHAS_LIB_DIR.exists()) { System.err.println("Can not find directory to save arthas lib. please try to set user home by -Duser.home="); } } @Argument(argName = "pid", index = 0, required = false) @Description("Target pid") public void setPid(long pid) { this.pid = pid; } @Option(shortName = "h", longName = "help", flag = true) @Description("Print usage") public void setHelp(boolean help) { this.help = help; } @Option(longName = "target-ip") @Description("The target jvm listen ip, default 127.0.0.1") public void setTargetIp(String targetIp) { this.targetIp = targetIp; } @Option(longName = "telnet-port") @Description("The target jvm listen telnet port, default 3658") public void setTelnetPort(int telnetPort) { this.telnetPort = telnetPort; } @Option(longName = "http-port") @Description("The target jvm listen http port, default 8563") public void setHttpPort(int httpPort) { this.httpPort = httpPort; } @Option(longName = "session-timeout") @Description("The session timeout seconds, default 1800 (30min)") public void setSessionTimeout(Long sessionTimeout) { this.sessionTimeout = sessionTimeout; } @Option(longName = "arthas-home") @Description("The arthas home") public void setArthasHome(String arthasHome) { this.arthasHome = arthasHome; } @Option(longName = "use-version") @Description("Use special version arthas") public void setUseVersion(String useVersion) { this.useVersion = useVersion; } @Option(longName = "repo-mirror") @Description("Use special remote repository mirror, value is center/aliyun or http repo url.") public void setRepoMirror(String repoMirror) { this.repoMirror = repoMirror; } @Option(longName = "versions", flag = true) @Description("List local and remote arthas versions") public void setVersions(boolean versions) { this.versions = versions; } @Option(longName = "use-http", flag = true) @Description("Enforce use http to download, default use https") public void setuseHttp(boolean useHttp) { this.useHttp = useHttp; } @Option(longName = "attach-only", flag = true) @Description("Attach target process only, do not connect") public void setAttachOnly(boolean attachOnly) { this.attachOnly = attachOnly; } @Option(shortName = "c", longName = "command") @Description("Command to execute, multiple commands separated by ;") public void setCommand(String command) { this.command = command; } @Option(shortName = "f", longName = "batch-file") @Description("The batch file to execute") public void setBatchFile(String batchFile) { this.batchFile = batchFile; } @Option(longName = "height") @Description("arthas-client terminal height") public void setHeight(int height) { this.height = height; } @Option(longName = "width") @Description("arthas-client terminal width") public void setWidth(int width) { this.width = width; } @Option(shortName = "v", longName = "verbose", flag = true) @Description("Verbose, print debug info.") public void setVerbose(boolean verbose) { this.verbose = verbose; } @Option(longName = "tunnel-server") @Description("The tunnel server url") public void setTunnelServer(String tunnelServer) { this.tunnelServer = tunnelServer; } @Option(longName = "agent-id") @Description("The agent id register to tunnel server") public void setAgentId(String agentId) { this.agentId = agentId; } @Option(longName = "app-name") @Description("The app name") public void setAppName(String appName) { this.appName = appName; } @Option(longName = "username") @Description("The username") public void setUsername(String username) { this.username = username; } @Option(longName = "password") @Description("The password") public void setPassword(String password) { this.password = password; } @Option(longName = "stat-url") @Description("The report stat url") public void setStatUrl(String statUrl) { this.statUrl = statUrl; } @Option(longName = "select") @Description("select target process by classname or JARfilename") public void setSelect(String select) { this.select = select; } @Option(longName = "disabled-commands") @Description("disable some commands ") public void setDisabledCommands(String disabledCommands) { this.disabledCommands = disabledCommands; } public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException, ClassNotFoundException, NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException { String javaHome = System.getProperty("java.home"); if (javaHome != null) { AnsiLog.info("JAVA_HOME: " + javaHome); } Package bootstrapPackage = Bootstrap.class.getPackage(); if (bootstrapPackage != null) { String arthasBootVersion = bootstrapPackage.getImplementationVersion(); if (arthasBootVersion != null) { AnsiLog.info("arthas-boot version: " + arthasBootVersion); } } try { String javaToolOptions = System.getenv("JAVA_TOOL_OPTIONS"); if (javaToolOptions != null && !javaToolOptions.trim().isEmpty()) { AnsiLog.info("JAVA_TOOL_OPTIONS: " + javaToolOptions); } } catch (Throwable e) { // ignore } Bootstrap bootstrap = new Bootstrap(); CLI cli = CLIConfigurator.define(Bootstrap.class); CommandLine commandLine = cli.parse(Arrays.asList(args)); try { CLIConfigurator.inject(commandLine, bootstrap); } catch (Throwable e) { e.printStackTrace(); System.out.println(usage(cli)); System.exit(1); } if (bootstrap.isVerbose()) { AnsiLog.level(Level.ALL); } if (bootstrap.isHelp()) { System.out.println(usage(cli)); System.exit(0); } if (bootstrap.getRepoMirror() == null || bootstrap.getRepoMirror().trim().isEmpty()) { bootstrap.setRepoMirror("center"); // if timezone is +0800, default repo mirror is aliyun if (TimeUnit.MILLISECONDS.toHours(TimeZone.getDefault().getOffset(System.currentTimeMillis())) == 8) { bootstrap.setRepoMirror("aliyun"); } } AnsiLog.debug("Repo mirror:" + bootstrap.getRepoMirror()); if (bootstrap.isVersions()) { System.out.println(UsageRender.render(listVersions())); System.exit(0); } if (JavaVersionUtils.isJava6() || JavaVersionUtils.isJava7()) { bootstrap.setuseHttp(true); AnsiLog.debug("Java version is {}, only support http, set useHttp to true.", JavaVersionUtils.javaVersionStr()); } // check telnet/http port long telnetPortPid = -1; long httpPortPid = -1; if (bootstrap.getTelnetPortOrDefault() > 0) { telnetPortPid = SocketUtils.findTcpListenProcess(bootstrap.getTelnetPortOrDefault()); if (telnetPortPid > 0) { AnsiLog.info("Process {} already using port {}", telnetPortPid, bootstrap.getTelnetPortOrDefault()); } } if (bootstrap.getHttpPortOrDefault() > 0) { httpPortPid = SocketUtils.findTcpListenProcess(bootstrap.getHttpPortOrDefault()); if (httpPortPid > 0) { AnsiLog.info("Process {} already using port {}", httpPortPid, bootstrap.getHttpPortOrDefault()); } } long pid = bootstrap.getPid(); // select pid if (pid < 0) { try { pid = ProcessUtils.select(bootstrap.isVerbose(), telnetPortPid, bootstrap.getSelect()); } catch (InputMismatchException e) { System.out.println("Please input an integer to select pid."); System.exit(1); } if (pid < 0) { System.out.println("Please select an available pid."); System.exit(1); } } checkTelnetPortPid(bootstrap, telnetPortPid, pid); if (httpPortPid > 0 && pid != httpPortPid) { AnsiLog.error("Target process {} is not the process using port {}, you will connect to an unexpected process.", pid, bootstrap.getHttpPortOrDefault()); AnsiLog.error("1. Try to restart arthas-boot, select process {}, shutdown it first with running the 'stop' command.", httpPortPid); AnsiLog.error("2. Or try to use different http port, for example: java -jar arthas-boot.jar --telnet-port 9998 --http-port 9999"); System.exit(1); } // find arthas home File arthasHomeDir = null; if (bootstrap.getArthasHome() != null) { verifyArthasHome(bootstrap.getArthasHome()); arthasHomeDir = new File(bootstrap.getArthasHome()); } if (arthasHomeDir == null && bootstrap.getUseVersion() != null) { // try to find from ~/.arthas/lib File specialVersionDir = new File(System.getProperty("user.home"), ".arthas" + File.separator + "lib" + File.separator + bootstrap.getUseVersion() + File.separator + "arthas"); if (!specialVersionDir.exists()) { // try to download arthas from remote server. DownloadUtils.downArthasPackaging(bootstrap.getRepoMirror(), bootstrap.isUseHttp(), bootstrap.getUseVersion(), ARTHAS_LIB_DIR.getAbsolutePath()); } verifyArthasHome(specialVersionDir.getAbsolutePath()); arthasHomeDir = specialVersionDir; } // Try set the directory where arthas-boot.jar is located to arthas home if (arthasHomeDir == null) { CodeSource codeSource = Bootstrap.class.getProtectionDomain().getCodeSource(); if (codeSource != null) { try { // https://stackoverflow.com/a/17870390 File bootJarPath = new File(codeSource.getLocation().toURI().getSchemeSpecificPart()); verifyArthasHome(bootJarPath.getParent()); arthasHomeDir = bootJarPath.getParentFile(); } catch (Throwable e) { // ignore } } } // try to download from remote server if (arthasHomeDir == null) { boolean checkFile = ARTHAS_LIB_DIR.exists() || ARTHAS_LIB_DIR.mkdirs(); if(!checkFile){ AnsiLog.error("cannot create directory {}: maybe permission denied", ARTHAS_LIB_DIR.getAbsolutePath()); System.exit(1); } /** * 
             * 1. get local latest version
             * 2. get remote latest version
             * 3. compare two version
             *
*/ List versionList = listNames(ARTHAS_LIB_DIR); Collections.sort(versionList); String localLatestVersion = null; if (!versionList.isEmpty()) { localLatestVersion = versionList.get(versionList.size() - 1); } String remoteLatestVersion = DownloadUtils.readLatestReleaseVersion(); boolean needDownload = false; if (localLatestVersion == null) { if (remoteLatestVersion == null) { // exit AnsiLog.error("Can not find Arthas under local: {} and remote repo mirror: {}", ARTHAS_LIB_DIR, bootstrap.getRepoMirror()); AnsiLog.error( "Unable to download arthas from remote server, please download the full package according to wiki: https://github.com/alibaba/arthas"); System.exit(1); } else { needDownload = true; } } else { if (remoteLatestVersion != null) { if (localLatestVersion.compareTo(remoteLatestVersion) < 0) { AnsiLog.info("local latest version: {}, remote latest version: {}, try to download from remote.", localLatestVersion, remoteLatestVersion); needDownload = true; } } } if (needDownload) { // try to download arthas from remote server. DownloadUtils.downArthasPackaging(bootstrap.getRepoMirror(), bootstrap.isUseHttp(), remoteLatestVersion, ARTHAS_LIB_DIR.getAbsolutePath()); localLatestVersion = remoteLatestVersion; } // get the latest version arthasHomeDir = new File(ARTHAS_LIB_DIR, localLatestVersion + File.separator + "arthas"); } verifyArthasHome(arthasHomeDir.getAbsolutePath()); AnsiLog.info("arthas home: " + arthasHomeDir); if (telnetPortPid > 0 && pid == telnetPortPid) { AnsiLog.info("The target process already listen port {}, skip attach.", bootstrap.getTelnetPortOrDefault()); } else { //double check telnet port and pid before attach telnetPortPid = findProcessByTelnetClient(arthasHomeDir.getAbsolutePath(), bootstrap.getTelnetPortOrDefault()); checkTelnetPortPid(bootstrap, telnetPortPid, pid); if (telnetPortPid > 0 && pid == telnetPortPid) { AnsiLog.info("The target process already listen port {}, skip attach.", bootstrap.getTelnetPortOrDefault()); } else { // start arthas-core.jar List attachArgs = new ArrayList(); attachArgs.add("-jar"); attachArgs.add(new File(arthasHomeDir, "arthas-core.jar").getAbsolutePath()); attachArgs.add("-pid"); attachArgs.add("" + pid); if (bootstrap.getTargetIp() != null) { attachArgs.add("-target-ip"); attachArgs.add(bootstrap.getTargetIp()); } if (bootstrap.getTelnetPort() != null) { attachArgs.add("-telnet-port"); attachArgs.add("" + bootstrap.getTelnetPort()); } if (bootstrap.getHttpPort() != null) { attachArgs.add("-http-port"); attachArgs.add("" + bootstrap.getHttpPort()); } attachArgs.add("-core"); attachArgs.add(new File(arthasHomeDir, "arthas-core.jar").getAbsolutePath()); attachArgs.add("-agent"); attachArgs.add(new File(arthasHomeDir, "arthas-agent.jar").getAbsolutePath()); if (bootstrap.getSessionTimeout() != null) { attachArgs.add("-session-timeout"); attachArgs.add("" + bootstrap.getSessionTimeout()); } if (bootstrap.getAppName() != null) { attachArgs.add("-app-name"); attachArgs.add(bootstrap.getAppName()); } if (bootstrap.getUsername() != null) { attachArgs.add("-username"); attachArgs.add(bootstrap.getUsername()); } if (bootstrap.getPassword() != null) { attachArgs.add("-password"); attachArgs.add(bootstrap.getPassword()); } if (bootstrap.getTunnelServer() != null) { attachArgs.add("-tunnel-server"); attachArgs.add(bootstrap.getTunnelServer()); } if (bootstrap.getAgentId() != null) { attachArgs.add("-agent-id"); attachArgs.add(bootstrap.getAgentId()); } if (bootstrap.getStatUrl() != null) { attachArgs.add("-stat-url"); attachArgs.add(bootstrap.getStatUrl()); } if (bootstrap.getDisabledCommands() != null) { attachArgs.add("-disabled-commands"); attachArgs.add(bootstrap.getDisabledCommands()); } AnsiLog.info("Try to attach process " + pid); AnsiLog.debug("Start arthas-core.jar args: " + attachArgs); ProcessUtils.startArthasCore(pid, attachArgs); AnsiLog.info("Attach process {} success.", pid); } } if (bootstrap.isAttachOnly()) { System.exit(0); } // start java telnet client // find arthas-client.jar URLClassLoader classLoader = new URLClassLoader( new URL[] { new File(arthasHomeDir, "arthas-client.jar").toURI().toURL() }); Class telnetConsoleClas = classLoader.loadClass("com.taobao.arthas.client.TelnetConsole"); Method mainMethod = telnetConsoleClas.getMethod("main", String[].class); List telnetArgs = new ArrayList(); if (bootstrap.getCommand() != null) { telnetArgs.add("-c"); telnetArgs.add(bootstrap.getCommand()); } if (bootstrap.getBatchFile() != null) { telnetArgs.add("-f"); telnetArgs.add(bootstrap.getBatchFile()); } if (bootstrap.getHeight() != null) { telnetArgs.add("--height"); telnetArgs.add("" + bootstrap.getHeight()); } if (bootstrap.getWidth() != null) { telnetArgs.add("--width"); telnetArgs.add("" + bootstrap.getWidth()); } // telnet port ,ip telnetArgs.add(bootstrap.getTargetIpOrDefault()); telnetArgs.add("" + bootstrap.getTelnetPortOrDefault()); AnsiLog.info("arthas-client connect {} {}", bootstrap.getTargetIpOrDefault(), bootstrap.getTelnetPortOrDefault()); AnsiLog.debug("Start arthas-client.jar args: " + telnetArgs); // fix https://github.com/alibaba/arthas/issues/833 Thread.currentThread().setContextClassLoader(classLoader); mainMethod.invoke(null, new Object[] { telnetArgs.toArray(new String[0]) }); } private static void checkTelnetPortPid(Bootstrap bootstrap, long telnetPortPid, long targetPid) { if (telnetPortPid > 0 && targetPid != telnetPortPid) { AnsiLog.error("The telnet port {} is used by process {} instead of target process {}, you will connect to an unexpected process.", bootstrap.getTelnetPortOrDefault(), telnetPortPid, targetPid); AnsiLog.error("1. Try to restart arthas-boot, select process {}, shutdown it first with running the 'stop' command.", telnetPortPid); AnsiLog.error("2. Or try to stop the existing arthas instance: java -jar arthas-client.jar 127.0.0.1 {} -c \"stop\"", bootstrap.getTelnetPortOrDefault()); AnsiLog.error("3. Or try to use different telnet port, for example: java -jar arthas-boot.jar --telnet-port 9998 --http-port -1"); System.exit(1); } } private static long findProcessByTelnetClient(String arthasHomeDir, int telnetPort) { // start java telnet client List telnetArgs = new ArrayList(); telnetArgs.add("-c"); telnetArgs.add("session"); telnetArgs.add("--execution-timeout"); telnetArgs.add("2000"); // telnet port ,ip telnetArgs.add("127.0.0.1"); telnetArgs.add("" + telnetPort); try { ByteArrayOutputStream out = new ByteArrayOutputStream(1024); String error = null; int status = ProcessUtils.startArthasClient(arthasHomeDir, telnetArgs, out); if (status == STATUS_EXEC_TIMEOUT) { error = "detection timeout"; } else if (status == STATUS_EXEC_ERROR) { error = "detection error"; AnsiLog.error("process status: {}", status); AnsiLog.error("process output: {}", out.toString()); } else { // ignore connect error } if (error != null) { AnsiLog.error("The telnet port {} is used, but process {}, you will connect to an unexpected process.", telnetPort, error); AnsiLog.error("Try to use a different telnet port, for example: java -jar arthas-boot.jar --telnet-port 9998 --http-port -1"); System.exit(1); } //parse output, find java pid String output = out.toString("UTF-8"); String javaPidLine = null; Scanner scanner = new Scanner(output); while (scanner.hasNextLine()) { String line = scanner.nextLine(); if (line.contains("JAVA_PID")) { javaPidLine = line; break; } } if (javaPidLine != null) { // JAVA_PID 10473 try { String[] strs = javaPidLine.split("JAVA_PID"); if (strs.length > 1) { return Long.parseLong(strs[strs.length - 1].trim()); } } catch (NumberFormatException e) { // ignore } } } catch (Throwable ex) { AnsiLog.error("Detection telnet port error"); AnsiLog.error(ex); } return -1; } private static String listVersions() { StringBuilder result = new StringBuilder(1024); List versionList = listNames(ARTHAS_LIB_DIR); Collections.sort(versionList); result.append("Local versions:\n"); for (String version : versionList) { result.append(" ").append(version).append('\n'); } result.append("Remote versions:\n"); List remoteVersions = DownloadUtils.readRemoteVersions(); if (remoteVersions != null) { Collections.reverse(remoteVersions); for (String version : remoteVersions) { result.append(" " + version).append('\n'); } } else { result.append(" unknown\n"); } return result.toString(); } private static List listNames(File dir) { List names = new ArrayList(); if (!dir.exists()) { return names; } File[] files = dir.listFiles(); if (files == null) { return names; } for (File file : files) { String name = file.getName(); if (name.startsWith(".") || file.isFile()) { continue; } names.add(name); } return names; } private static void verifyArthasHome(String arthasHome) { File home = new File(arthasHome); if (home.isDirectory()) { String[] fileList = { "arthas-core.jar", "arthas-agent.jar", "arthas-spy.jar" }; for (String fileName : fileList) { if (!new File(home, fileName).exists()) { throw new IllegalArgumentException( fileName + " do not exist, arthas home: " + home.getAbsolutePath()); } } return; } throw new IllegalArgumentException("illegal arthas home: " + home.getAbsolutePath()); } private static String usage(CLI cli) { StringBuilder usageStringBuilder = new StringBuilder(); UsageMessageFormatter usageMessageFormatter = new UsageMessageFormatter(); usageMessageFormatter.setOptionComparator(null); cli.usage(usageStringBuilder, usageMessageFormatter); return UsageRender.render(usageStringBuilder.toString()); } public String getArthasHome() { return arthasHome; } public String getUseVersion() { return useVersion; } public String getRepoMirror() { return repoMirror; } public boolean isUseHttp() { return useHttp; } public String getTargetIp() { return targetIp; } public String getTargetIpOrDefault() { if (this.targetIp == null) { return DEFAULT_TARGET_IP; } else { return this.targetIp; } } public Integer getTelnetPort() { return telnetPort; } public int getTelnetPortOrDefault() { if (this.telnetPort == null) { return DEFAULT_TELNET_PORT; } else { return this.telnetPort; } } public Integer getHttpPort() { return httpPort; } public int getHttpPortOrDefault() { if (this.httpPort == null) { return DEFAULT_HTTP_PORT; } else { return this.httpPort; } } public String getCommand() { return command; } public String getBatchFile() { return batchFile; } public boolean isAttachOnly() { return attachOnly; } public long getPid() { return pid; } public boolean isHelp() { return help; } public Long getSessionTimeout() { return sessionTimeout; } public boolean isVerbose() { return verbose; } public boolean isVersions() { return versions; } public Integer getHeight() { return height; } public Integer getWidth() { return width; } public String getTunnelServer() { return tunnelServer; } public String getAgentId() { return agentId; } public String getAppName() { return appName; } public String getStatUrl() { return statUrl; } public String getSelect() { return select; } public String getUsername() { return username; } public String getPassword() { return password; } public String getDisabledCommands() { return disabledCommands; } } ================================================ FILE: boot/src/main/java/com/taobao/arthas/boot/DownloadUtils.java ================================================ package com.taobao.arthas.boot; import java.io.BufferedInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.List; import com.taobao.arthas.common.AnsiLog; import com.taobao.arthas.common.IOUtils; /** * * @author hengyunabc 2018-11-06 * */ public class DownloadUtils { private static final String ARTHAS_VERSIONS_URL = "https://arthas.aliyun.com/api/versions"; private static final String ARTHAS_LATEST_VERSIONS_URL = "https://arthas.aliyun.com/api/latest_version"; private static final String ARTHAS_DOWNLOAD_URL = "https://arthas.aliyun.com/download/${VERSION}?mirror=${REPO}"; private static final int CONNECTION_TIMEOUT = 3000; public static String readLatestReleaseVersion() { InputStream inputStream = null; try { URLConnection connection = openURLConnection(ARTHAS_LATEST_VERSIONS_URL); inputStream = connection.getInputStream(); return IOUtils.toString(inputStream).trim(); } catch (Throwable t) { AnsiLog.error("Can not read arthas version from: " + ARTHAS_LATEST_VERSIONS_URL); AnsiLog.debug(t); } finally { IOUtils.close(inputStream); } return null; } public static List readRemoteVersions() { InputStream inputStream = null; try { URLConnection connection = openURLConnection(ARTHAS_VERSIONS_URL); inputStream = connection.getInputStream(); String versionsStr = IOUtils.toString(inputStream); String[] versions = versionsStr.split("\r\n"); ArrayList result = new ArrayList(); for (String version : versions) { result.add(version.trim()); } return result; } catch (Throwable t) { AnsiLog.error("Can not read arthas versions from: " + ARTHAS_VERSIONS_URL); AnsiLog.debug(t); } finally { IOUtils.close(inputStream); } return null; } private static String getRepoUrl(String repoUrl, boolean http) { if (repoUrl.endsWith("/")) { repoUrl = repoUrl.substring(0, repoUrl.length() - 1); } if (http && repoUrl.startsWith("https")) { repoUrl = "http" + repoUrl.substring("https".length()); } return repoUrl; } public static void downArthasPackaging(String repoMirror, boolean http, String arthasVersion, String savePath) throws IOException { String repoUrl = getRepoUrl(ARTHAS_DOWNLOAD_URL, http); File unzipDir = new File(savePath, arthasVersion + File.separator + "arthas"); File tempFile = File.createTempFile("arthas", "arthas"); AnsiLog.debug("Arthas download temp file: " + tempFile.getAbsolutePath()); String remoteDownloadUrl = repoUrl.replace("${REPO}", repoMirror).replace("${VERSION}", arthasVersion); AnsiLog.info("Start download arthas from remote server: " + remoteDownloadUrl); saveUrl(tempFile.getAbsolutePath(), remoteDownloadUrl, true); AnsiLog.info("Download arthas success."); IOUtils.unzip(tempFile.getAbsolutePath(), unzipDir.getAbsolutePath()); } private static void saveUrl(final String filename, final String urlString, boolean printProgress) throws IOException { BufferedInputStream in = null; FileOutputStream fout = null; try { URLConnection connection = openURLConnection(urlString); in = new BufferedInputStream(connection.getInputStream()); List values = connection.getHeaderFields().get("Content-Length"); int fileSize = 0; if (values != null && !values.isEmpty()) { String contentLength = values.get(0); if (contentLength != null) { // parse the length into an integer... fileSize = Integer.parseInt(contentLength); } } fout = new FileOutputStream(filename); final byte[] data = new byte[1024 * 1024]; int totalCount = 0; int count; long lastPrintTime = System.currentTimeMillis(); while ((count = in.read(data, 0, data.length)) != -1) { totalCount += count; if (printProgress) { long now = System.currentTimeMillis(); if (now - lastPrintTime > 1000) { AnsiLog.info("File size: {}, downloaded size: {}, downloading ...", formatFileSize(fileSize), formatFileSize(totalCount)); lastPrintTime = now; } } fout.write(data, 0, count); } } catch (javax.net.ssl.SSLException e) { AnsiLog.error("TLS connect error, please try to add --use-http argument."); AnsiLog.error("URL: " + urlString); AnsiLog.error(e); } finally { IOUtils.close(in); IOUtils.close(fout); } } /** * support redirect * * @param url * @return * @throws MalformedURLException * @throws IOException */ private static URLConnection openURLConnection(String url) throws MalformedURLException, IOException { URLConnection connection = new URL(url).openConnection(); if (connection instanceof HttpURLConnection) { connection.setConnectTimeout(CONNECTION_TIMEOUT); // normally, 3xx is redirect int status = ((HttpURLConnection) connection).getResponseCode(); if (status != HttpURLConnection.HTTP_OK) { if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM || status == HttpURLConnection.HTTP_SEE_OTHER) { String newUrl = connection.getHeaderField("Location"); AnsiLog.debug("Try to open url: {}, redirect to: {}", url, newUrl); return openURLConnection(newUrl); } } } return connection; } private static String formatFileSize(long size) { String hrSize; double b = size; double k = size / 1024.0; double m = ((size / 1024.0) / 1024.0); double g = (((size / 1024.0) / 1024.0) / 1024.0); double t = ((((size / 1024.0) / 1024.0) / 1024.0) / 1024.0); DecimalFormat dec = new DecimalFormat("0.00"); if (t > 1) { hrSize = dec.format(t).concat(" TB"); } else if (g > 1) { hrSize = dec.format(g).concat(" GB"); } else if (m > 1) { hrSize = dec.format(m).concat(" MB"); } else if (k > 1) { hrSize = dec.format(k).concat(" KB"); } else { hrSize = dec.format(b).concat(" Bytes"); } return hrSize; } } ================================================ FILE: boot/src/main/java/com/taobao/arthas/boot/ProcessUtils.java ================================================ package com.taobao.arthas.boot; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.PrintStream; import java.lang.reflect.Method; import java.net.URL; import java.net.URLClassLoader; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Scanner; import java.util.InputMismatchException; import com.taobao.arthas.common.AnsiLog; import com.taobao.arthas.common.ExecutingCommand; import com.taobao.arthas.common.IOUtils; import com.taobao.arthas.common.JavaVersionUtils; import com.taobao.arthas.common.PidUtils; /** * * @author hengyunabc 2018-11-06 * */ public class ProcessUtils { private static String FOUND_JAVA_HOME = null; //status code from com.taobao.arthas.client.TelnetConsole /** * Process success */ public static final int STATUS_OK = 0; /** * Generic error */ public static final int STATUS_ERROR = 1; /** * Execute commands timeout */ public static final int STATUS_EXEC_TIMEOUT = 100; /** * Execute commands error */ public static final int STATUS_EXEC_ERROR = 101; @SuppressWarnings("resource") public static long select(boolean v, long telnetPortPid, String select) throws InputMismatchException { Map processMap = listProcessByJps(v); if (processMap.isEmpty()) { processMap = listProcessByJcmd(); if (processMap.isEmpty()) { AnsiLog.error("Cannot find java process. Try to run `jps` or `jcmd` commands to list the instrumented Java HotSpot VMs on the target system."); return -1; } } // Put the port that is already listening at the first if (telnetPortPid > 0 && processMap.containsKey(telnetPortPid)) { String telnetPortProcess = processMap.get(telnetPortPid); processMap.remove(telnetPortPid); Map newProcessMap = new LinkedHashMap(); newProcessMap.put(telnetPortPid, telnetPortProcess); newProcessMap.putAll(processMap); processMap = newProcessMap; } // select target process by the '--select' option when match only one process if (select != null && !select.trim().isEmpty()) { int matchedSelectCount = 0; Long matchedPid = null; for (Entry entry : processMap.entrySet()) { if (entry.getValue().contains(select)) { matchedSelectCount++; matchedPid = entry.getKey(); } } if (matchedSelectCount == 1) { return matchedPid; } } AnsiLog.info("Found existing java process, please choose one and input the serial number of the process, eg : 1. Then hit ENTER."); // print list int count = 1; for (String process : processMap.values()) { if (count == 1) { System.out.println("* [" + count + "]: " + process); } else { System.out.println(" [" + count + "]: " + process); } count++; } // read choice String line = new Scanner(System.in).nextLine(); if (line.trim().isEmpty()) { // get the first process id return processMap.keySet().iterator().next(); } int choice = new Scanner(line).nextInt(); if (choice <= 0 || choice > processMap.size()) { return -1; } Iterator idIter = processMap.keySet().iterator(); for (int i = 1; i <= choice; ++i) { if (i == choice) { return idIter.next(); } idIter.next(); } return -1; } private static Map listProcessByJcmd() { Map result = new LinkedHashMap<>(); String jcmd = "jcmd"; File jcmdFile = findJcmd(); if (jcmdFile != null) { jcmd = jcmdFile.getAbsolutePath(); } AnsiLog.debug("Try use jcmd to list java process, jcmd: " + jcmd); String[] command = new String[] { jcmd, "-l" }; List lines = ExecutingCommand.runNative(command); AnsiLog.debug("jcmd result: " + lines); long currentPid = Long.parseLong(PidUtils.currentPid()); for (String line : lines) { String[] strings = line.trim().split("\\s+"); if (strings.length < 1) { continue; } try { long pid = Long.parseLong(strings[0]); if (pid == currentPid) { continue; } if (strings.length >= 2 && isJcmdProcess(strings[1])) { // skip jcmd continue; } result.put(pid, line); } catch (Throwable e) { // https://github.com/alibaba/arthas/issues/970 // ignore } } return result; } /** * @deprecated {@link #listProcessByJcmd()} */ @Deprecated private static Map listProcessByJps(boolean v) { Map result = new LinkedHashMap(); String jps = "jps"; File jpsFile = findJps(); if (jpsFile != null) { jps = jpsFile.getAbsolutePath(); } AnsiLog.debug("Try use jps to list java process, jps: " + jps); String[] command = null; if (v) { command = new String[] { jps, "-v", "-l" }; } else { command = new String[] { jps, "-l" }; } List lines = ExecutingCommand.runNative(command); AnsiLog.debug("jps result: " + lines); long currentPid = Long.parseLong(PidUtils.currentPid()); for (String line : lines) { String[] strings = line.trim().split("\\s+"); if (strings.length < 1) { continue; } try { long pid = Long.parseLong(strings[0]); if (pid == currentPid) { continue; } if (strings.length >= 2 && isJpsProcess(strings[1])) { // skip jps continue; } result.put(pid, line); } catch (Throwable e) { // https://github.com/alibaba/arthas/issues/970 // ignore } } return result; } /** * 
     * 1. Try to find java home from System Property java.home
     * 2. If jdk > 8, FOUND_JAVA_HOME set to java.home
     * 3. If jdk <= 8, try to find tools.jar under java.home
     * 4. If tools.jar do not exists under java.home, try to find System env JAVA_HOME
     * 5. If jdk <= 8 and tools.jar do not exists under JAVA_HOME, throw IllegalArgumentException
     *
* * @return */ public static String findJavaHome() { if (FOUND_JAVA_HOME != null) { return FOUND_JAVA_HOME; } String javaHome = System.getProperty("java.home"); if (JavaVersionUtils.isLessThanJava9()) { File toolsJar = new File(javaHome, "lib/tools.jar"); if (!toolsJar.exists()) { toolsJar = new File(javaHome, "../lib/tools.jar"); } if (!toolsJar.exists()) { // maybe jre toolsJar = new File(javaHome, "../../lib/tools.jar"); } if (toolsJar.exists()) { FOUND_JAVA_HOME = javaHome; return FOUND_JAVA_HOME; } if (!toolsJar.exists()) { AnsiLog.debug("Can not find tools.jar under java.home: " + javaHome); String javaHomeEnv = System.getenv("JAVA_HOME"); if (javaHomeEnv != null && !javaHomeEnv.isEmpty()) { AnsiLog.debug("Try to find tools.jar in System Env JAVA_HOME: " + javaHomeEnv); // $JAVA_HOME/lib/tools.jar toolsJar = new File(javaHomeEnv, "lib/tools.jar"); if (!toolsJar.exists()) { // maybe jre toolsJar = new File(javaHomeEnv, "../lib/tools.jar"); } } if (toolsJar.exists()) { AnsiLog.info("Found java home from System Env JAVA_HOME: " + javaHomeEnv); FOUND_JAVA_HOME = javaHomeEnv; return FOUND_JAVA_HOME; } throw new IllegalArgumentException("Can not find tools.jar under java home: " + javaHome + ", please try to start arthas-boot with full path java. Such as /opt/jdk/bin/java -jar arthas-boot.jar"); } } else { FOUND_JAVA_HOME = javaHome; } return FOUND_JAVA_HOME; } public static void startArthasCore(long targetPid, List attachArgs) { // find java/java.exe, then try to find tools.jar String javaHome = findJavaHome(); // find java/java.exe File javaPath = findJava(javaHome); if (javaPath == null) { throw new IllegalArgumentException( "Can not find java/java.exe executable file under java home: " + javaHome); } File toolsJar = findToolsJar(javaHome); if (JavaVersionUtils.isLessThanJava9()) { if (toolsJar == null || !toolsJar.exists()) { throw new IllegalArgumentException("Can not find tools.jar under java home: " + javaHome); } } List command = new ArrayList(); command.add(javaPath.getAbsolutePath()); if (toolsJar != null && toolsJar.exists()) { command.add("-Xbootclasspath/a:" + toolsJar.getAbsolutePath()); } command.addAll(attachArgs); // "${JAVA_HOME}"/bin/java \ // ${opts} \ // -jar "${arthas_lib_dir}/arthas-core.jar" \ // -pid ${TARGET_PID} \ // -target-ip ${TARGET_IP} \ // -telnet-port ${TELNET_PORT} \ // -http-port ${HTTP_PORT} \ // -core "${arthas_lib_dir}/arthas-core.jar" \ // -agent "${arthas_lib_dir}/arthas-agent.jar" ProcessBuilder pb = new ProcessBuilder(command); // https://github.com/alibaba/arthas/issues/2166 pb.environment().put("JAVA_TOOL_OPTIONS", ""); try { final Process proc = pb.start(); Thread redirectStdout = new Thread(new Runnable() { @Override public void run() { InputStream inputStream = proc.getInputStream(); try { IOUtils.copy(inputStream, System.out); } catch (IOException e) { IOUtils.close(inputStream); } } }); Thread redirectStderr = new Thread(new Runnable() { @Override public void run() { InputStream inputStream = proc.getErrorStream(); try { IOUtils.copy(inputStream, System.err); } catch (IOException e) { IOUtils.close(inputStream); } } }); redirectStdout.start(); redirectStderr.start(); redirectStdout.join(); redirectStderr.join(); int exitValue = proc.exitValue(); if (exitValue != 0) { AnsiLog.error("attach fail, targetPid: " + targetPid); System.exit(1); } } catch (Throwable e) { // ignore } } public static int startArthasClient(String arthasHomeDir, List telnetArgs, OutputStream out) throws Throwable { // start java telnet client // find arthas-client.jar URLClassLoader classLoader = new URLClassLoader( new URL[]{new File(arthasHomeDir, "arthas-client.jar").toURI().toURL()}); Class telnetConsoleClass = classLoader.loadClass("com.taobao.arthas.client.TelnetConsole"); Method processMethod = telnetConsoleClass.getMethod("process", String[].class); //redirect System.out/System.err PrintStream originSysOut = System.out; PrintStream originSysErr = System.err; PrintStream newOut = new PrintStream(out); PrintStream newErr = new PrintStream(out); // call TelnetConsole.process() // fix https://github.com/alibaba/arthas/issues/833 ClassLoader tccl = Thread.currentThread().getContextClassLoader(); try { System.setOut(newOut); System.setErr(newErr); Thread.currentThread().setContextClassLoader(classLoader); return (Integer) processMethod.invoke(null, new Object[]{telnetArgs.toArray(new String[0])}); } catch (Throwable e) { //java.lang.reflect.InvocationTargetException : java.net.ConnectException e = e.getCause(); if (e instanceof IOException || e instanceof InterruptedException) { // ignore connection error and interrupted error return STATUS_ERROR; } else { // process error AnsiLog.error("process error: {}", e.toString()); AnsiLog.error(e); return STATUS_EXEC_ERROR; } } finally { Thread.currentThread().setContextClassLoader(tccl); //reset System.out/System.err System.setOut(originSysOut); System.setErr(originSysErr); //flush output newOut.flush(); newErr.flush(); } } private static File findJava(String javaHome) { String[] paths = { "bin/java", "bin/java.exe", "../bin/java", "../bin/java.exe" }; List javaList = new ArrayList(); for (String path : paths) { File javaFile = new File(javaHome, path); if (javaFile.exists()) { AnsiLog.debug("Found java: " + javaFile.getAbsolutePath()); javaList.add(javaFile); } } if (javaList.isEmpty()) { AnsiLog.debug("Can not find java/java.exe under current java home: " + javaHome); return null; } // find the shortest path, jre path longer than jdk path if (javaList.size() > 1) { Collections.sort(javaList, new Comparator() { @Override public int compare(File file1, File file2) { try { return file1.getCanonicalPath().length() - file2.getCanonicalPath().length(); } catch (IOException e) { // ignore } return -1; } }); } return javaList.get(0); } private static File findToolsJar(String javaHome) { if (JavaVersionUtils.isGreaterThanJava8()) { return null; } File toolsJar = new File(javaHome, "lib/tools.jar"); if (!toolsJar.exists()) { toolsJar = new File(javaHome, "../lib/tools.jar"); } if (!toolsJar.exists()) { // maybe jre toolsJar = new File(javaHome, "../../lib/tools.jar"); } if (!toolsJar.exists()) { throw new IllegalArgumentException("Can not find tools.jar under java home: " + javaHome); } AnsiLog.debug("Found tools.jar: " + toolsJar.getAbsolutePath()); return toolsJar; } private static File findJcmd() { // Try to find jcmd under java.home and System env JAVA_HOME String javaHome = System.getProperty("java.home"); String[] paths = { "bin/jcmd", "bin/jcmd.exe", "../bin/jcmd", "../bin/jcmd.exe" }; List jcmdList = new ArrayList<>(); for (String path : paths) { File jcmdFile = new File(javaHome, path); if (jcmdFile.exists()) { AnsiLog.debug("Found jcmd: " + jcmdFile.getAbsolutePath()); jcmdList.add(jcmdFile); } } if (jcmdList.isEmpty()) { AnsiLog.debug("Can not find jcmd under :" + javaHome); String javaHomeEnv = System.getenv("JAVA_HOME"); AnsiLog.debug("Try to find jcmd under env JAVA_HOME :" + javaHomeEnv); if (javaHomeEnv != null) { for (String path : paths) { File jcmdFile = new File(javaHomeEnv, path); if (jcmdFile.exists()) { AnsiLog.debug("Found jcmd: " + jcmdFile.getAbsolutePath()); jcmdList.add(jcmdFile); } } } else { AnsiLog.debug("JAVA_HOME environment variable is not set."); } } if (jcmdList.isEmpty()) { AnsiLog.debug("Can not find jcmd under current java home: " + javaHome); return null; } // find the shortest path, jre path longer than jdk path if (jcmdList.size() > 1) { jcmdList.sort((file1, file2) -> { try { return file1.getCanonicalPath().length() - file2.getCanonicalPath().length(); } catch (IOException e) { // ignore // fallback to absolute path length comparison return file1.getAbsolutePath().length() - file2.getAbsolutePath().length(); } }); } return jcmdList.get(0); } private static boolean isJcmdProcess(String mainClassName) { // Java 8 or Java 9+ return "sun.tools.jcmd.JCmd".equals(mainClassName) || "jdk.jcmd/sun.tools.jcmd.JCmd".equals(mainClassName); } /** * @deprecated {@link #findJcmd()} */ @Deprecated private static File findJps() { // Try to find jps under java.home and System env JAVA_HOME String javaHome = System.getProperty("java.home"); String[] paths = { "bin/jps", "bin/jps.exe", "../bin/jps", "../bin/jps.exe" }; List jpsList = new ArrayList(); for (String path : paths) { File jpsFile = new File(javaHome, path); if (jpsFile.exists()) { AnsiLog.debug("Found jps: " + jpsFile.getAbsolutePath()); jpsList.add(jpsFile); } } if (jpsList.isEmpty()) { AnsiLog.debug("Can not find jps under :" + javaHome); String javaHomeEnv = System.getenv("JAVA_HOME"); AnsiLog.debug("Try to find jps under env JAVA_HOME :" + javaHomeEnv); for (String path : paths) { File jpsFile = new File(javaHomeEnv, path); if (jpsFile.exists()) { AnsiLog.debug("Found jps: " + jpsFile.getAbsolutePath()); jpsList.add(jpsFile); } } } if (jpsList.isEmpty()) { AnsiLog.debug("Can not find jps under current java home: " + javaHome); return null; } // find the shortest path, jre path longer than jdk path if (jpsList.size() > 1) { Collections.sort(jpsList, new Comparator() { @Override public int compare(File file1, File file2) { try { return file1.getCanonicalPath().length() - file2.getCanonicalPath().length(); } catch (IOException e) { // ignore } return -1; } }); } return jpsList.get(0); } /** * @deprecated {@link #isJcmdProcess(String)} */ @Deprecated private static boolean isJpsProcess(String mainClassName) { return "sun.tools.jps.Jps".equals(mainClassName) || "jdk.jcmd/sun.tools.jps.Jps".equals(mainClassName); } } ================================================ FILE: boot/src/test/java/com/taobao/arthas/boot/DownloadUtilsTest.java ================================================ package com.taobao.arthas.boot; import java.io.File; import java.io.IOException; import java.util.List; import java.util.TimeZone; import java.util.concurrent.TimeUnit; import org.junit.Assert; import org.junit.Rule; import org.junit.Test; import org.junit.rules.TemporaryFolder; public class DownloadUtilsTest { @Rule public TemporaryFolder rootFolder = new TemporaryFolder(); @Test public void testReadReleaseVersion() { String releaseVersion = DownloadUtils.readLatestReleaseVersion(); Assert.assertNotNull(releaseVersion); Assert.assertNotEquals("releaseVersion is empty", "", releaseVersion.trim()); System.err.println(releaseVersion); } @Test public void testReadAllVersions() { List versions = DownloadUtils.readRemoteVersions(); Assert.assertEquals("", true, versions.contains("3.1.7")); } @Test public void testAliyunDownload() throws IOException { // fix travis-ci failed problem if (TimeUnit.MILLISECONDS.toHours(TimeZone.getDefault().getOffset(System.currentTimeMillis())) == 8) { String version = "3.3.7"; File folder = rootFolder.newFolder(); System.err.println(folder.getAbsolutePath()); DownloadUtils.downArthasPackaging("aliyun", false, version, folder.getAbsolutePath()); File as = new File(folder, version + File.separator + "arthas" + File.separator + "as.sh"); Assert.assertTrue(as.exists()); } } @Test public void testCenterDownload() throws IOException { String version = "3.1.7"; File folder = rootFolder.newFolder(); System.err.println(folder.getAbsolutePath()); DownloadUtils.downArthasPackaging("center", false, version, folder.getAbsolutePath()); File as = new File(folder, version + File.separator + "arthas" + File.separator + "as.sh"); Assert.assertTrue(as.exists()); } } ================================================ FILE: client/pom.xml ================================================ arthas-all com.taobao.arthas ${revision} ../pom.xml 4.0.0 arthas-client arthas-client https://github.com/alibaba/arthas arthas-client org.apache.maven.plugins maven-assembly-plugin single package jar-with-dependencies com.taobao.arthas.client.TelnetConsole core engine team, middleware group, alibaba inc. ${project.name} ${project.version} ${project.name} ${project.version} com.taobao.arthas arthas-common ${project.version} com.alibaba.middleware cli jline jline ================================================ FILE: client/src/main/java/com/taobao/arthas/client/IOUtil.java ================================================ package com.taobao.arthas.client; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.Writer; /*** * This is a utility class providing a reader/writer capability required by the * weatherTelnet, rexec, rshell, and rlogin example programs. The only point of * the class is to hold the static method readWrite which spawns a reader thread * and a writer thread. The reader thread reads from a local input source * (presumably stdin) and writes the data to a remote output destination. The * writer thread reads from a remote input source and writes to a local output * destination. The threads terminate when the remote input source closes. ***/ public final class IOUtil { public static final void readWrite(final InputStream remoteInput, final OutputStream remoteOutput, final InputStream localInput, final Writer localOutput) { Thread reader, writer; reader = new Thread() { @Override public void run() { int ch; try { while (!interrupted() && (ch = localInput.read()) != -1) { remoteOutput.write(ch); remoteOutput.flush(); } } catch (IOException e) { // e.printStackTrace(); } } }; writer = new Thread() { @Override public void run() { try { InputStreamReader reader = new InputStreamReader(remoteInput); while (true) { int singleChar = reader.read(); if (singleChar == -1) { break; } localOutput.write(singleChar); localOutput.flush(); } } catch (IOException e) { e.printStackTrace(); } } }; writer.setPriority(Thread.currentThread().getPriority() + 1); writer.start(); reader.setDaemon(true); reader.start(); try { writer.join(); reader.interrupt(); } catch (InterruptedException e) { // Ignored } } } ================================================ FILE: client/src/main/java/com/taobao/arthas/client/TelnetConsole.java ================================================ package com.taobao.arthas.client; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.concurrent.BlockingQueue; import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.TimeUnit; import org.apache.commons.net.telnet.InvalidTelnetOptionException; import org.apache.commons.net.telnet.TelnetClient; import org.apache.commons.net.telnet.TelnetOptionHandler; import org.apache.commons.net.telnet.WindowSizeOptionHandler; import com.taobao.arthas.common.OSUtils; import com.taobao.arthas.common.UsageRender; import com.taobao.middleware.cli.CLI; import com.taobao.middleware.cli.CommandLine; import com.taobao.middleware.cli.UsageMessageFormatter; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.CLIConfigurator; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Option; import com.taobao.middleware.cli.annotations.Summary; import jline.Terminal; import jline.TerminalSupport; import jline.UnixTerminal; import jline.console.ConsoleReader; import jline.console.KeyMap; /** * @author ralf0131 2016-12-29 11:55. * @author hengyunabc 2018-11-01 */ @Name("arthas-client") @Summary("Arthas Telnet Client") @Description("EXAMPLES:\n" + " java -jar arthas-client.jar 127.0.0.1 3658\n" + " java -jar arthas-client.jar -c 'dashboard -n 1' \n" + " java -jar arthas-client.jar -f batch.as 127.0.0.1\n") public class TelnetConsole { private static final String PROMPT = "[arthas@"; // [arthas@49603]$ private static final int DEFAULT_CONNECTION_TIMEOUT = 5000; // 5000 ms private static final byte CTRL_C = 0x03; // ------- Status codes ------- // /** * Process success */ public static final int STATUS_OK = 0; /** * Generic error */ public static final int STATUS_ERROR = 1; /** * Execute commands timeout */ public static final int STATUS_EXEC_TIMEOUT = 100; /** * Execute commands error */ public static final int STATUS_EXEC_ERROR = 101; private boolean help = false; private String targetIp = "127.0.0.1"; private int port = 3658; private String command; private String batchFile; private int executionTimeout = -1; private Integer width = null; private Integer height = null; @Argument(argName = "target-ip", index = 0, required = false) @Description("Target ip") public void setTargetIp(String targetIp) { this.targetIp = targetIp; } @Argument(argName = "port", index = 1, required = false) @Description("The remote server port") public void setPort(int port) { this.port = port; } @Option(longName = "help", flag = true) @Description("Print usage") public void setHelp(boolean help) { this.help = help; } @Option(shortName = "c", longName = "command") @Description("Command to execute, multiple commands separated by ;") public void setCommand(String command) { this.command = command; } @Option(shortName = "f", longName = "batch-file") @Description("The batch file to execute") public void setBatchFile(String batchFile) { this.batchFile = batchFile; } @Option(shortName = "t", longName = "execution-timeout") @Description("The timeout (ms) of execute commands or batch file ") public void setExecutionTimeout(int executionTimeout) { this.executionTimeout = executionTimeout; } @Option(shortName = "w", longName = "width") @Description("The terminal width") public void setWidth(int width) { this.width = width; } @Option(shortName = "h", longName = "height") @Description("The terminal height") public void setheight(int height) { this.height = height; } public TelnetConsole() { } private static List readLines(File batchFile) { List list = new ArrayList(); BufferedReader br = null; try { br = new BufferedReader(new FileReader(batchFile)); String line = br.readLine(); while (line != null) { list.add(line); line = br.readLine(); } } catch (IOException e) { e.printStackTrace(); } finally { if (br != null) { try { br.close(); } catch (IOException e) { // ignore } } } return list; } public static void main(String[] args) throws Exception { try { int status = process(args, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { System.exit(STATUS_OK); } }); System.exit(status); } catch (Throwable e) { e.printStackTrace(); CLI cli = CLIConfigurator.define(TelnetConsole.class); System.out.println(usage(cli)); System.exit(STATUS_ERROR); } } /** * 提供给arthas-boot使用的主处理函数 * * @param args * @return status code * @throws IOException * @throws InterruptedException */ public static int process(String[] args) throws IOException, InterruptedException { return process(args, null); } /** * arthas client 主函数 * 注意： process()函数提供给arthas-boot使用，内部不能调用System.exit()结束进程的方法 * * @param args * @param eotEventCallback Ctrl+D signals an End of Transmission (EOT) event * @return status code * @throws IOException */ public static int process(String[] args, ActionListener eotEventCallback) throws IOException { // support mingw/cygw jline color if (OSUtils.isCygwinOrMinGW()) { System.setProperty("jline.terminal", System.getProperty("jline.terminal", "jline.UnixTerminal")); } TelnetConsole telnetConsole = new TelnetConsole(); CLI cli = CLIConfigurator.define(TelnetConsole.class); CommandLine commandLine = cli.parse(Arrays.asList(args)); CLIConfigurator.inject(commandLine, telnetConsole); if (telnetConsole.isHelp()) { System.out.println(usage(cli)); return STATUS_OK; } // Try to read cmds List cmds = new ArrayList(); if (telnetConsole.getCommand() != null) { for (String c : telnetConsole.getCommand().split(";")) { cmds.add(c.trim()); } } else if (telnetConsole.getBatchFile() != null) { File file = new File(telnetConsole.getBatchFile()); if (!file.exists()) { throw new IllegalArgumentException("batch file do not exist: " + telnetConsole.getBatchFile()); } else { cmds.addAll(readLines(file)); } } final ConsoleReader consoleReader = new ConsoleReader(System.in, System.out); consoleReader.setHandleUserInterrupt(true); Terminal terminal = consoleReader.getTerminal(); // support catch ctrl+c event terminal.disableInterruptCharacter(); if (terminal instanceof UnixTerminal) { ((UnixTerminal) terminal).disableLitteralNextCharacter(); } try { int width = TerminalSupport.DEFAULT_WIDTH; int height = TerminalSupport.DEFAULT_HEIGHT; if (!cmds.isEmpty()) { // batch mode if (telnetConsole.getWidth() != null) { width = telnetConsole.getWidth(); } if (telnetConsole.getheight() != null) { height = telnetConsole.getheight(); } } else { // normal telnet client, get current terminal size if (telnetConsole.getWidth() != null) { width = telnetConsole.getWidth(); } else { width = terminal.getWidth(); // hack for windows dos if (OSUtils.isWindows()) { width--; } } if (telnetConsole.getheight() != null) { height = telnetConsole.getheight(); } else { height = terminal.getHeight(); } } final TelnetClient telnet = new TelnetClient(); telnet.setConnectTimeout(DEFAULT_CONNECTION_TIMEOUT); // send init terminal size TelnetOptionHandler sizeOpt = new WindowSizeOptionHandler(width, height, true, true, false, false); try { telnet.addOptionHandler(sizeOpt); } catch (InvalidTelnetOptionException e) { // ignore } // ctrl + c event callback consoleReader.getKeys().bind(Character.toString((char) CTRL_C), new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { consoleReader.getCursorBuffer().clear(); // clear current line telnet.getOutputStream().write(CTRL_C); telnet.getOutputStream().flush(); } catch (Exception e1) { e1.printStackTrace(); } } }); // ctrl + d event call back consoleReader.getKeys().bind(Character.toString(KeyMap.CTRL_D), eotEventCallback); try { telnet.connect(telnetConsole.getTargetIp(), telnetConsole.getPort()); } catch (IOException e) { System.out.println("Connect to telnet server error: " + telnetConsole.getTargetIp() + " " + telnetConsole.getPort()); throw e; } if (cmds.isEmpty()) { IOUtil.readWrite(telnet.getInputStream(), telnet.getOutputStream(), consoleReader.getInput(), consoleReader.getOutput()); } else { try { return batchModeRun(telnet, cmds, telnetConsole.getExecutionTimeout()); } catch (Throwable e) { System.out.println("Execute commands error: " + e.getMessage()); e.printStackTrace(); return STATUS_EXEC_ERROR; } finally { try { telnet.disconnect(); } catch (IOException e) { //ignore ex } } } return STATUS_OK; } finally { //reset terminal setting, fix https://github.com/alibaba/arthas/issues/1412 try { terminal.restore(); } catch (Throwable e) { System.out.println("Restore terminal settings failure: "+e.getMessage()); e.printStackTrace(); } } } private static int batchModeRun(TelnetClient telnet, List commands, final int executionTimeout) throws IOException, InterruptedException { if (commands.size() == 0) { return STATUS_OK; } long startTime = System.currentTimeMillis(); final InputStream inputStream = telnet.getInputStream(); final OutputStream outputStream = telnet.getOutputStream(); final BlockingQueue receviedPromptQueue = new LinkedBlockingQueue(1); Thread printResultThread = new Thread(new Runnable() { @Override public void run() { try { StringBuilder line = new StringBuilder(); BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8")); int b = -1; while (true) { b = in.read(); if (b == -1) { break; } line.appendCodePoint(b); // 检查到有 [arthas@ 时，意味着可以执行下一个命令了 int index = line.indexOf(PROMPT); if (index > 0) { line.delete(0, index + PROMPT.length()); receviedPromptQueue.put(""); } System.out.print(Character.toChars(b)); } } catch (Exception e) { // ignore } } }); printResultThread.start(); // send commands to arthas server for (String command : commands) { if (command.trim().isEmpty()) { continue; } // try poll prompt and check timeout while (receviedPromptQueue.poll(100, TimeUnit.MILLISECONDS) == null) { if (executionTimeout > 0) { long now = System.currentTimeMillis(); if (now - startTime > executionTimeout) { return STATUS_EXEC_TIMEOUT; } } } // send command to server outputStream.write((command + " | plaintext\n").getBytes()); outputStream.flush(); } // 读到最后一个命令执行后的 prompt ，可以直接发 quit命令了。 receviedPromptQueue.take(); outputStream.write("quit\n".getBytes()); outputStream.flush(); System.out.println(); return STATUS_OK; } private static String usage(CLI cli) { StringBuilder usageStringBuilder = new StringBuilder(); UsageMessageFormatter usageMessageFormatter = new UsageMessageFormatter(); usageMessageFormatter.setOptionComparator(null); cli.usage(usageStringBuilder, usageMessageFormatter); return UsageRender.render(usageStringBuilder.toString()); } public String getTargetIp() { return targetIp; } public int getPort() { return port; } public String getCommand() { return command; } public String getBatchFile() { return batchFile; } public int getExecutionTimeout() { return executionTimeout; } public Integer getWidth() { return width; } public Integer getheight() { return height; } public boolean isHelp() { return help; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/DatagramSocketClient.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketException; import java.nio.charset.Charset; /*** * The DatagramSocketClient provides the basic operations that are required * of client objects accessing datagram sockets. It is meant to be * subclassed to avoid having to rewrite the same code over and over again * to open a socket, close a socket, set timeouts, etc. Of special note * is the {@link #setDatagramSocketFactory setDatagramSocketFactory } * method, which allows you to control the type of DatagramSocket the * DatagramSocketClient creates for network communications. This is * especially useful for adding things like proxy support as well as better * support for applets. For * example, you could create a * {@link org.apache.commons.net.DatagramSocketFactory} * that * requests browser security capabilities before creating a socket. * All classes derived from DatagramSocketClient should use the * {@link #_socketFactory_ _socketFactory_ } member variable to * create DatagramSocket instances rather than instantiating * them by directly invoking a constructor. By honoring this contract * you guarantee that a user will always be able to provide his own * Socket implementations by substituting his own SocketFactory. * * * @see DatagramSocketFactory ***/ public abstract class DatagramSocketClient { /*** * The default DatagramSocketFactory shared by all DatagramSocketClient * instances. ***/ private static final DatagramSocketFactory __DEFAULT_SOCKET_FACTORY = new DefaultDatagramSocketFactory(); /** * Charset to use for byte IO. */ private Charset charset = Charset.defaultCharset(); /*** The timeout to use after opening a socket. ***/ protected int _timeout_; /*** The datagram socket used for the connection. ***/ protected DatagramSocket _socket_; /*** * A status variable indicating if the client's socket is currently open. ***/ protected boolean _isOpen_; /*** The datagram socket's DatagramSocketFactory. ***/ protected DatagramSocketFactory _socketFactory_; /*** * Default constructor for DatagramSocketClient. Initializes * _socket_ to null, _timeout_ to 0, and _isOpen_ to false. ***/ public DatagramSocketClient() { _socket_ = null; _timeout_ = 0; _isOpen_ = false; _socketFactory_ = __DEFAULT_SOCKET_FACTORY; } /*** * Opens a DatagramSocket on the local host at the first available port. * Also sets the timeout on the socket to the default timeout set * by {@link #setDefaultTimeout setDefaultTimeout() }. *

* _isOpen_ is set to true after calling this method and _socket_ * is set to the newly opened socket. * * @exception SocketException If the socket could not be opened or the * timeout could not be set. ***/ public void open() throws SocketException { _socket_ = _socketFactory_.createDatagramSocket(); _socket_.setSoTimeout(_timeout_); _isOpen_ = true; } /*** * Opens a DatagramSocket on the local host at a specified port. * Also sets the timeout on the socket to the default timeout set * by {@link #setDefaultTimeout setDefaultTimeout() }. *

* _isOpen_ is set to true after calling this method and _socket_ * is set to the newly opened socket. * * @param port The port to use for the socket. * @exception SocketException If the socket could not be opened or the * timeout could not be set. ***/ public void open(int port) throws SocketException { _socket_ = _socketFactory_.createDatagramSocket(port); _socket_.setSoTimeout(_timeout_); _isOpen_ = true; } /*** * Opens a DatagramSocket at the specified address on the local host * at a specified port. * Also sets the timeout on the socket to the default timeout set * by {@link #setDefaultTimeout setDefaultTimeout() }. *

* _isOpen_ is set to true after calling this method and _socket_ * is set to the newly opened socket. * * @param port The port to use for the socket. * @param laddr The local address to use. * @exception SocketException If the socket could not be opened or the * timeout could not be set. ***/ public void open(int port, InetAddress laddr) throws SocketException { _socket_ = _socketFactory_.createDatagramSocket(port, laddr); _socket_.setSoTimeout(_timeout_); _isOpen_ = true; } /*** * Closes the DatagramSocket used for the connection. * You should call this method after you've finished using the class * instance and also before you call {@link #open open() } * again. _isOpen_ is set to false and _socket_ is set to null. * If you call this method when the client socket is not open, * a NullPointerException is thrown. ***/ public void close() { if (_socket_ != null) { _socket_.close(); } _socket_ = null; _isOpen_ = false; } /*** * Returns true if the client has a currently open socket. * * @return True if the client has a curerntly open socket, false otherwise. ***/ public boolean isOpen() { return _isOpen_; } /*** * Set the default timeout in milliseconds to use when opening a socket. * After a call to open, the timeout for the socket is set using this value. * This method should be used prior to a call to {@link #open open()} * and should not be confused with {@link #setSoTimeout setSoTimeout()} * which operates on the currently open socket. _timeout_ contains * the new timeout value. * * @param timeout The timeout in milliseconds to use for the datagram socket * connection. ***/ public void setDefaultTimeout(int timeout) { _timeout_ = timeout; } /*** * Returns the default timeout in milliseconds that is used when * opening a socket. * * @return The default timeout in milliseconds that is used when * opening a socket. ***/ public int getDefaultTimeout() { return _timeout_; } /*** * Set the timeout in milliseconds of a currently open connection. * Only call this method after a connection has been opened * by {@link #open open()}. * * @param timeout The timeout in milliseconds to use for the currently * open datagram socket connection. * @throws SocketException if an error setting the timeout ***/ public void setSoTimeout(int timeout) throws SocketException { _socket_.setSoTimeout(timeout); } /*** * Returns the timeout in milliseconds of the currently opened socket. * If you call this method when the client socket is not open, * a NullPointerException is thrown. * * @return The timeout in milliseconds of the currently opened socket. * @throws SocketException if an error getting the timeout ***/ public int getSoTimeout() throws SocketException { return _socket_.getSoTimeout(); } /*** * Returns the port number of the open socket on the local host used * for the connection. If you call this method when the client socket * is not open, a NullPointerException is thrown. * * @return The port number of the open socket on the local host used * for the connection. ***/ public int getLocalPort() { return _socket_.getLocalPort(); } /*** * Returns the local address to which the client's socket is bound. * If you call this method when the client socket is not open, a * NullPointerException is thrown. * * @return The local address to which the client's socket is bound. ***/ public InetAddress getLocalAddress() { return _socket_.getLocalAddress(); } /*** * Sets the DatagramSocketFactory used by the DatagramSocketClient * to open DatagramSockets. If the factory value is null, then a default * factory is used (only do this to reset the factory after having * previously altered it). * * @param factory The new DatagramSocketFactory the DatagramSocketClient * should use. ***/ public void setDatagramSocketFactory(DatagramSocketFactory factory) { if (factory == null) { _socketFactory_ = __DEFAULT_SOCKET_FACTORY; } else { _socketFactory_ = factory; } } /** * Gets the charset name. * * @return the charset name. * @since 3.3 * TODO Will be deprecated once the code requires Java 1.6 as a mininmum */ public String getCharsetName() { return charset.name(); } /** * Gets the charset. * * @return the charset. * @since 3.3 */ public Charset getCharset() { return charset; } /** * Sets the charset. * * @param charset the charset. * @since 3.3 */ public void setCharset(Charset charset) { this.charset = charset; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/DatagramSocketFactory.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketException; /*** * The DatagramSocketFactory interface provides a means for the * programmer to control the creation of datagram sockets and * provide his own DatagramSocket implementations for use by all * classes derived from * {@link org.apache.commons.net.DatagramSocketClient} * . * This allows you to provide your own DatagramSocket implementations and * to perform security checks or browser capability requests before * creating a DatagramSocket. * * ***/ public interface DatagramSocketFactory { /*** * Creates a DatagramSocket on the local host at the first available port. * @return the socket * * @exception SocketException If the socket could not be created. ***/ public DatagramSocket createDatagramSocket() throws SocketException; /*** * Creates a DatagramSocket on the local host at a specified port. * * @param port The port to use for the socket. * @return the socket * @exception SocketException If the socket could not be created. ***/ public DatagramSocket createDatagramSocket(int port) throws SocketException; /*** * Creates a DatagramSocket at the specified address on the local host * at a specified port. * * @param port The port to use for the socket. * @param laddr The local address to use. * @return the socket * @exception SocketException If the socket could not be created. ***/ public DatagramSocket createDatagramSocket(int port, InetAddress laddr) throws SocketException; } ================================================ FILE: client/src/main/java/org/apache/commons/net/DefaultDatagramSocketFactory.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.SocketException; /*** * DefaultDatagramSocketFactory implements the DatagramSocketFactory * interface by simply wrapping the java.net.DatagramSocket * constructors. It is the default DatagramSocketFactory used by * {@link org.apache.commons.net.DatagramSocketClient} * implementations. * * * @see DatagramSocketFactory * @see DatagramSocketClient * @see DatagramSocketClient#setDatagramSocketFactory ***/ public class DefaultDatagramSocketFactory implements DatagramSocketFactory { /*** * Creates a DatagramSocket on the local host at the first available port. * @return a new DatagramSocket * @exception SocketException If the socket could not be created. ***/ @Override public DatagramSocket createDatagramSocket() throws SocketException { return new DatagramSocket(); } /*** * Creates a DatagramSocket on the local host at a specified port. * * @param port The port to use for the socket. * @return a new DatagramSocket * @exception SocketException If the socket could not be created. ***/ @Override public DatagramSocket createDatagramSocket(int port) throws SocketException { return new DatagramSocket(port); } /*** * Creates a DatagramSocket at the specified address on the local host * at a specified port. * * @param port The port to use for the socket. * @param laddr The local address to use. * @return a new DatagramSocket * @exception SocketException If the socket could not be created. ***/ @Override public DatagramSocket createDatagramSocket(int port, InetAddress laddr) throws SocketException { return new DatagramSocket(port, laddr); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/DefaultSocketFactory.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.io.IOException; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.Proxy; import java.net.ServerSocket; import java.net.Socket; import java.net.UnknownHostException; import javax.net.SocketFactory; /*** * DefaultSocketFactory implements the SocketFactory interface by * simply wrapping the java.net.Socket and java.net.ServerSocket * constructors. It is the default SocketFactory used by * {@link org.apache.commons.net.SocketClient} * implementations. * * * @see SocketFactory * @see SocketClient * @see SocketClient#setSocketFactory ***/ public class DefaultSocketFactory extends SocketFactory { /** The proxy to use when creating new sockets. */ private final Proxy connProxy; /** * The default constructor. */ public DefaultSocketFactory() { this(null); } /** * A constructor for sockets with proxy support. * * @param proxy The Proxy to use when creating new Sockets. * @since 3.2 */ public DefaultSocketFactory(Proxy proxy) { connProxy = proxy; } /** * Creates an unconnected Socket. * * @return A new unconnected Socket. * @exception IOException If an I/O error occurs while creating the Socket. * @since 3.2 */ @Override public Socket createSocket() throws IOException { if (connProxy != null) { return new Socket(connProxy); } return new Socket(); } /*** * Creates a Socket connected to the given host and port. * * @param host The hostname to connect to. * @param port The port to connect to. * @return A Socket connected to the given host and port. * @exception UnknownHostException If the hostname cannot be resolved. * @exception IOException If an I/O error occurs while creating the Socket. ***/ @Override public Socket createSocket(String host, int port) throws UnknownHostException, IOException { if (connProxy != null) { Socket s = new Socket(connProxy); s.connect(new InetSocketAddress(host, port)); return s; } return new Socket(host, port); } /*** * Creates a Socket connected to the given host and port. * * @param address The address of the host to connect to. * @param port The port to connect to. * @return A Socket connected to the given host and port. * @exception IOException If an I/O error occurs while creating the Socket. ***/ @Override public Socket createSocket(InetAddress address, int port) throws IOException { if (connProxy != null) { Socket s = new Socket(connProxy); s.connect(new InetSocketAddress(address, port)); return s; } return new Socket(address, port); } /*** * Creates a Socket connected to the given host and port and * originating from the specified local address and port. * * @param host The hostname to connect to. * @param port The port to connect to. * @param localAddr The local address to use. * @param localPort The local port to use. * @return A Socket connected to the given host and port. * @exception UnknownHostException If the hostname cannot be resolved. * @exception IOException If an I/O error occurs while creating the Socket. ***/ @Override public Socket createSocket(String host, int port, InetAddress localAddr, int localPort) throws UnknownHostException, IOException { if (connProxy != null) { Socket s = new Socket(connProxy); s.bind(new InetSocketAddress(localAddr, localPort)); s.connect(new InetSocketAddress(host, port)); return s; } return new Socket(host, port, localAddr, localPort); } /*** * Creates a Socket connected to the given host and port and * originating from the specified local address and port. * * @param address The address of the host to connect to. * @param port The port to connect to. * @param localAddr The local address to use. * @param localPort The local port to use. * @return A Socket connected to the given host and port. * @exception IOException If an I/O error occurs while creating the Socket. ***/ @Override public Socket createSocket(InetAddress address, int port, InetAddress localAddr, int localPort) throws IOException { if (connProxy != null) { Socket s = new Socket(connProxy); s.bind(new InetSocketAddress(localAddr, localPort)); s.connect(new InetSocketAddress(address, port)); return s; } return new Socket(address, port, localAddr, localPort); } /*** * Creates a ServerSocket bound to a specified port. A port * of 0 will create the ServerSocket on a system-determined free port. * * @param port The port on which to listen, or 0 to use any free port. * @return A ServerSocket that will listen on a specified port. * @exception IOException If an I/O error occurs while creating * the ServerSocket. ***/ public ServerSocket createServerSocket(int port) throws IOException { return new ServerSocket(port); } /*** * Creates a ServerSocket bound to a specified port with a given * maximum queue length for incoming connections. A port of 0 will * create the ServerSocket on a system-determined free port. * * @param port The port on which to listen, or 0 to use any free port. * @param backlog The maximum length of the queue for incoming connections. * @return A ServerSocket that will listen on a specified port. * @exception IOException If an I/O error occurs while creating * the ServerSocket. ***/ public ServerSocket createServerSocket(int port, int backlog) throws IOException { return new ServerSocket(port, backlog); } /*** * Creates a ServerSocket bound to a specified port on a given local * address with a given maximum queue length for incoming connections. * A port of 0 will * create the ServerSocket on a system-determined free port. * * @param port The port on which to listen, or 0 to use any free port. * @param backlog The maximum length of the queue for incoming connections. * @param bindAddr The local address to which the ServerSocket should bind. * @return A ServerSocket that will listen on a specified port. * @exception IOException If an I/O error occurs while creating * the ServerSocket. ***/ public ServerSocket createServerSocket(int port, int backlog, InetAddress bindAddr) throws IOException { return new ServerSocket(port, backlog, bindAddr); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/MalformedServerReplyException.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.io.IOException; /*** * This exception is used to indicate that the reply from a server * could not be interpreted. Most of the NetComponents classes attempt * to be as lenient as possible when receiving server replies. Many * server implementations deviate from IETF protocol specifications, making * it necessary to be as flexible as possible. However, there will be * certain situations where it is not possible to continue an operation * because the server reply could not be interpreted in a meaningful manner. * In these cases, a MalformedServerReplyException should be thrown. * * ***/ public class MalformedServerReplyException extends IOException { private static final long serialVersionUID = 6006765264250543945L; /*** Constructs a MalformedServerReplyException with no message ***/ public MalformedServerReplyException() { super(); } /*** * Constructs a MalformedServerReplyException with a specified message. * * @param message The message explaining the reason for the exception. ***/ public MalformedServerReplyException(String message) { super(message); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/PrintCommandListener.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.io.PrintStream; import java.io.PrintWriter; /*** * This is a support class for some of the example programs. It is * a sample implementation of the ProtocolCommandListener interface * which just prints out to a specified stream all command/reply traffic. * * @since 2.0 ***/ public class PrintCommandListener implements ProtocolCommandListener { private final PrintWriter __writer; private final boolean __nologin; private final char __eolMarker; private final boolean __directionMarker; /** * Create the default instance which prints everything. * * @param stream where to write the commands and responses * e.g. System.out * @since 3.0 */ public PrintCommandListener(PrintStream stream) { this(new PrintWriter(stream)); } /** * Create an instance which optionally suppresses login command text * and indicates where the EOL starts with the specified character. * * @param stream where to write the commands and responses * @param suppressLogin if {@code true}, only print command name for login * * @since 3.0 */ public PrintCommandListener(PrintStream stream, boolean suppressLogin) { this(new PrintWriter(stream), suppressLogin); } /** * Create an instance which optionally suppresses login command text * and indicates where the EOL starts with the specified character. * * @param stream where to write the commands and responses * @param suppressLogin if {@code true}, only print command name for login * @param eolMarker if non-zero, add a marker just before the EOL. * * @since 3.0 */ public PrintCommandListener(PrintStream stream, boolean suppressLogin, char eolMarker) { this(new PrintWriter(stream), suppressLogin, eolMarker); } /** * Create an instance which optionally suppresses login command text * and indicates where the EOL starts with the specified character. * * @param stream where to write the commands and responses * @param suppressLogin if {@code true}, only print command name for login * @param eolMarker if non-zero, add a marker just before the EOL. * @param showDirection if {@code true}, add {@code "> "} or {@code "< "} as appropriate to the output * * @since 3.0 */ public PrintCommandListener(PrintStream stream, boolean suppressLogin, char eolMarker, boolean showDirection) { this(new PrintWriter(stream), suppressLogin, eolMarker, showDirection); } /** * Create the default instance which prints everything. * * @param writer where to write the commands and responses */ public PrintCommandListener(PrintWriter writer) { this(writer, false); } /** * Create an instance which optionally suppresses login command text. * * @param writer where to write the commands and responses * @param suppressLogin if {@code true}, only print command name for login * * @since 3.0 */ public PrintCommandListener(PrintWriter writer, boolean suppressLogin) { this(writer, suppressLogin, (char) 0); } /** * Create an instance which optionally suppresses login command text * and indicates where the EOL starts with the specified character. * * @param writer where to write the commands and responses * @param suppressLogin if {@code true}, only print command name for login * @param eolMarker if non-zero, add a marker just before the EOL. * * @since 3.0 */ public PrintCommandListener(PrintWriter writer, boolean suppressLogin, char eolMarker) { this(writer, suppressLogin, eolMarker, false); } /** * Create an instance which optionally suppresses login command text * and indicates where the EOL starts with the specified character. * * @param writer where to write the commands and responses * @param suppressLogin if {@code true}, only print command name for login * @param eolMarker if non-zero, add a marker just before the EOL. * @param showDirection if {@code true}, add {@code ">} " or {@code "< "} as appropriate to the output * * @since 3.0 */ public PrintCommandListener(PrintWriter writer, boolean suppressLogin, char eolMarker, boolean showDirection) { __writer = writer; __nologin = suppressLogin; __eolMarker = eolMarker; __directionMarker = showDirection; } @Override public void protocolCommandSent(ProtocolCommandEvent event) { if (__directionMarker) { __writer.print("> "); } if (__nologin) { String cmd = event.getCommand(); if ("PASS".equalsIgnoreCase(cmd) || "USER".equalsIgnoreCase(cmd)) { __writer.print(cmd); __writer.println(" *******"); // Don't bother with EOL marker for this! } else { final String IMAP_LOGIN = "LOGIN"; if (IMAP_LOGIN.equalsIgnoreCase(cmd)) { // IMAP String msg = event.getMessage(); msg=msg.substring(0, msg.indexOf(IMAP_LOGIN)+IMAP_LOGIN.length()); __writer.print(msg); __writer.println(" *******"); // Don't bother with EOL marker for this! } else { __writer.print(getPrintableString(event.getMessage())); } } } else { __writer.print(getPrintableString(event.getMessage())); } __writer.flush(); } private String getPrintableString(String msg){ if (__eolMarker == 0) { return msg; } int pos = msg.indexOf(SocketClient.NETASCII_EOL); if (pos > 0) { return msg.substring(0, pos) + __eolMarker + msg.substring(pos); } return msg; } @Override public void protocolReplyReceived(ProtocolCommandEvent event) { if (__directionMarker) { __writer.print("< "); } __writer.print(event.getMessage()); __writer.flush(); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/ProtocolCommandEvent.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.util.EventObject; /*** * There exists a large class of IETF protocols that work by sending an * ASCII text command and arguments to a server, and then receiving an * ASCII text reply. For debugging and other purposes, it is extremely * useful to log or keep track of the contents of the protocol messages. * The ProtocolCommandEvent class coupled with the * {@link org.apache.commons.net.ProtocolCommandListener} * interface facilitate this process. * * * @see ProtocolCommandListener * @see ProtocolCommandSupport ***/ public class ProtocolCommandEvent extends EventObject { private static final long serialVersionUID = 403743538418947240L; private final int __replyCode; private final boolean __isCommand; private final String __message, __command; /*** * Creates a ProtocolCommandEvent signalling a command was sent to * the server. ProtocolCommandEvents created with this constructor * should only be sent after a command has been sent, but before the * reply has been received. * * @param source The source of the event. * @param command The string representation of the command type sent, not * including the arguments (e.g., "STAT" or "GET"). * @param message The entire command string verbatim as sent to the server, * including all arguments. ***/ public ProtocolCommandEvent(Object source, String command, String message) { super(source); __replyCode = 0; __message = message; __isCommand = true; __command = command; } /*** * Creates a ProtocolCommandEvent signalling a reply to a command was * received. ProtocolCommandEvents created with this constructor * should only be sent after a complete command reply has been received * fromt a server. * * @param source The source of the event. * @param replyCode The integer code indicating the natureof the reply. * This will be the protocol integer value for protocols * that use integer reply codes, or the reply class constant * corresponding to the reply for protocols like POP3 that use * strings like OK rather than integer codes (i.e., POP3Repy.OK). * @param message The entire reply as received from the server. ***/ public ProtocolCommandEvent(Object source, int replyCode, String message) { super(source); __replyCode = replyCode; __message = message; __isCommand = false; __command = null; } /*** * Returns the string representation of the command type sent (e.g., "STAT" * or "GET"). If the ProtocolCommandEvent is a reply event, then null * is returned. * * @return The string representation of the command type sent, or null * if this is a reply event. ***/ public String getCommand() { return __command; } /*** * Returns the reply code of the received server reply. Undefined if * this is not a reply event. * * @return The reply code of the received server reply. Undefined if * not a reply event. ***/ public int getReplyCode() { return __replyCode; } /*** * Returns true if the ProtocolCommandEvent was generated as a result * of sending a command. * * @return true If the ProtocolCommandEvent was generated as a result * of sending a command. False otherwise. ***/ public boolean isCommand() { return __isCommand; } /*** * Returns true if the ProtocolCommandEvent was generated as a result * of receiving a reply. * * @return true If the ProtocolCommandEvent was generated as a result * of receiving a reply. False otherwise. ***/ public boolean isReply() { return !isCommand(); } /*** * Returns the entire message sent to or received from the server. * Includes the line terminator. * * @return The entire message sent to or received from the server. ***/ public String getMessage() { return __message; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/ProtocolCommandListener.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.util.EventListener; /*** * There exists a large class of IETF protocols that work by sending an * ASCII text command and arguments to a server, and then receiving an * ASCII text reply. For debugging and other purposes, it is extremely * useful to log or keep track of the contents of the protocol messages. * The ProtocolCommandListener interface coupled with the * {@link ProtocolCommandEvent} class facilitate this process. *

* To receive ProtocolCommandEvents, you merely implement the * ProtocolCommandListener interface and register the class as a listener * with a ProtocolCommandEvent source such as * {@link org.apache.commons.net.ftp.FTPClient}. * * * @see ProtocolCommandEvent * @see ProtocolCommandSupport ***/ public interface ProtocolCommandListener extends EventListener { /*** * This method is invoked by a ProtocolCommandEvent source after * sending a protocol command to a server. * * @param event The ProtocolCommandEvent fired. ***/ public void protocolCommandSent(ProtocolCommandEvent event); /*** * This method is invoked by a ProtocolCommandEvent source after * receiving a reply from a server. * * @param event The ProtocolCommandEvent fired. ***/ public void protocolReplyReceived(ProtocolCommandEvent event); } ================================================ FILE: client/src/main/java/org/apache/commons/net/ProtocolCommandSupport.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.io.Serializable; import java.util.EventListener; import org.apache.commons.net.util.ListenerList; /*** * ProtocolCommandSupport is a convenience class for managing a list of * ProtocolCommandListeners and firing ProtocolCommandEvents. You can * simply delegate ProtocolCommandEvent firing and listener * registering/unregistering tasks to this class. * * * @see ProtocolCommandEvent * @see ProtocolCommandListener ***/ public class ProtocolCommandSupport implements Serializable { private static final long serialVersionUID = -8017692739988399978L; private final Object __source; private final ListenerList __listeners; /*** * Creates a ProtocolCommandSupport instance using the indicated source * as the source of ProtocolCommandEvents. * * @param source The source to use for all generated ProtocolCommandEvents. ***/ public ProtocolCommandSupport(Object source) { __listeners = new ListenerList(); __source = source; } /*** * Fires a ProtocolCommandEvent signalling the sending of a command to all * registered listeners, invoking their * {@link org.apache.commons.net.ProtocolCommandListener#protocolCommandSent protocolCommandSent() } * methods. * * @param command The string representation of the command type sent, not * including the arguments (e.g., "STAT" or "GET"). * @param message The entire command string verbatim as sent to the server, * including all arguments. ***/ public void fireCommandSent(String command, String message) { ProtocolCommandEvent event; event = new ProtocolCommandEvent(__source, command, message); for (EventListener listener : __listeners) { ((ProtocolCommandListener)listener).protocolCommandSent(event); } } /*** * Fires a ProtocolCommandEvent signalling the reception of a command reply * to all registered listeners, invoking their * {@link org.apache.commons.net.ProtocolCommandListener#protocolReplyReceived protocolReplyReceived() } * methods. * * @param replyCode The integer code indicating the natureof the reply. * This will be the protocol integer value for protocols * that use integer reply codes, or the reply class constant * corresponding to the reply for protocols like POP3 that use * strings like OK rather than integer codes (i.e., POP3Repy.OK). * @param message The entire reply as received from the server. ***/ public void fireReplyReceived(int replyCode, String message) { ProtocolCommandEvent event; event = new ProtocolCommandEvent(__source, replyCode, message); for (EventListener listener : __listeners) { ((ProtocolCommandListener)listener).protocolReplyReceived(event); } } /*** * Adds a ProtocolCommandListener. * * @param listener The ProtocolCommandListener to add. ***/ public void addProtocolCommandListener(ProtocolCommandListener listener) { __listeners.addListener(listener); } /*** * Removes a ProtocolCommandListener. * * @param listener The ProtocolCommandListener to remove. ***/ public void removeProtocolCommandListener(ProtocolCommandListener listener) { __listeners.removeListener(listener); } /*** * Returns the number of ProtocolCommandListeners currently registered. * * @return The number of ProtocolCommandListeners currently registered. ***/ public int getListenerCount() { return __listeners.getListenerCount(); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/SocketClient.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net; import java.io.Closeable; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.Proxy; import java.net.Socket; import java.net.SocketException; import java.nio.charset.Charset; import javax.net.ServerSocketFactory; import javax.net.SocketFactory; /** * The SocketClient provides the basic operations that are required of * client objects accessing sockets. It is meant to be * subclassed to avoid having to rewrite the same code over and over again * to open a socket, close a socket, set timeouts, etc. Of special note * is the {@link #setSocketFactory setSocketFactory } * method, which allows you to control the type of Socket the SocketClient * creates for initiating network connections. This is especially useful * for adding SSL or proxy support as well as better support for applets. For * example, you could create a * {@link javax.net.SocketFactory} that * requests browser security capabilities before creating a socket. * All classes derived from SocketClient should use the * {@link #_socketFactory_ _socketFactory_ } member variable to * create Socket and ServerSocket instances rather than instantiating * them by directly invoking a constructor. By honoring this contract * you guarantee that a user will always be able to provide his own * Socket implementations by substituting his own SocketFactory. * @see SocketFactory */ public abstract class SocketClient { /** * The end of line character sequence used by most IETF protocols. That * is a carriage return followed by a newline: "\r\n" */ public static final String NETASCII_EOL = "\r\n"; /** The default SocketFactory shared by all SocketClient instances. */ private static final SocketFactory __DEFAULT_SOCKET_FACTORY = SocketFactory.getDefault(); /** The default {@link ServerSocketFactory} */ private static final ServerSocketFactory __DEFAULT_SERVER_SOCKET_FACTORY = ServerSocketFactory.getDefault(); /** * A ProtocolCommandSupport object used to manage the registering of * ProtocolCommandListeners and the firing of ProtocolCommandEvents. */ private ProtocolCommandSupport __commandSupport; /** The timeout to use after opening a socket. */ protected int _timeout_; /** The socket used for the connection. */ protected Socket _socket_; /** The hostname used for the connection (null = no hostname supplied). */ protected String _hostname_; /** The default port the client should connect to. */ protected int _defaultPort_; /** The socket's InputStream. */ protected InputStream _input_; /** The socket's OutputStream. */ protected OutputStream _output_; /** The socket's SocketFactory. */ protected SocketFactory _socketFactory_; /** The socket's ServerSocket Factory. */ protected ServerSocketFactory _serverSocketFactory_; /** The socket's connect timeout (0 = infinite timeout) */ private static final int DEFAULT_CONNECT_TIMEOUT = 0; protected int connectTimeout = DEFAULT_CONNECT_TIMEOUT; /** Hint for SO_RCVBUF size */ private int receiveBufferSize = -1; /** Hint for SO_SNDBUF size */ private int sendBufferSize = -1; /** The proxy to use when connecting. */ private Proxy connProxy; /** * Charset to use for byte IO. */ private Charset charset = Charset.defaultCharset(); /** * Default constructor for SocketClient. Initializes * _socket_ to null, _timeout_ to 0, _defaultPort to 0, * _isConnected_ to false, charset to {@code Charset.defaultCharset()} * and _socketFactory_ to a shared instance of * {@link org.apache.commons.net.DefaultSocketFactory}. */ public SocketClient() { _socket_ = null; _hostname_ = null; _input_ = null; _output_ = null; _timeout_ = 0; _defaultPort_ = 0; _socketFactory_ = __DEFAULT_SOCKET_FACTORY; _serverSocketFactory_ = __DEFAULT_SERVER_SOCKET_FACTORY; } /** * Because there are so many connect() methods, the _connectAction_() * method is provided as a means of performing some action immediately * after establishing a connection, rather than reimplementing all * of the connect() methods. The last action performed by every * connect() method after opening a socket is to call this method. *

* This method sets the timeout on the just opened socket to the default * timeout set by {@link #setDefaultTimeout setDefaultTimeout() }, * sets _input_ and _output_ to the socket's InputStream and OutputStream * respectively, and sets _isConnected_ to true. *

* Subclasses overriding this method should start by calling * super._connectAction_() first to ensure the * initialization of the aforementioned protected variables. * @throws IOException (SocketException) if a problem occurs with the socket */ protected void _connectAction_() throws IOException { _socket_.setSoTimeout(_timeout_); _input_ = _socket_.getInputStream(); _output_ = _socket_.getOutputStream(); } /** * Opens a Socket connected to a remote host at the specified port and * originating from the current host at a system assigned port. * Before returning, {@link #_connectAction_ _connectAction_() } * is called to perform connection initialization actions. *

* @param host The remote host. * @param port The port to connect to on the remote host. * @exception SocketException If the socket timeout could not be set. * @exception IOException If the socket could not be opened. In most * cases you will only want to catch IOException since SocketException is * derived from it. */ public void connect(InetAddress host, int port) throws SocketException, IOException { _hostname_ = null; _socket_ = _socketFactory_.createSocket(); if (receiveBufferSize != -1) { _socket_.setReceiveBufferSize(receiveBufferSize); } if (sendBufferSize != -1) { _socket_.setSendBufferSize(sendBufferSize); } _socket_.connect(new InetSocketAddress(host, port), connectTimeout); _connectAction_(); } /** * Opens a Socket connected to a remote host at the specified port and * originating from the current host at a system assigned port. * Before returning, {@link #_connectAction_ _connectAction_() } * is called to perform connection initialization actions. *

* @param hostname The name of the remote host. * @param port The port to connect to on the remote host. * @exception SocketException If the socket timeout could not be set. * @exception IOException If the socket could not be opened. In most * cases you will only want to catch IOException since SocketException is * derived from it. * @exception java.net.UnknownHostException If the hostname cannot be resolved. */ public void connect(String hostname, int port) throws SocketException, IOException { connect(InetAddress.getByName(hostname), port); _hostname_ = hostname; } /** * Opens a Socket connected to a remote host at the specified port and * originating from the specified local address and port. * Before returning, {@link #_connectAction_ _connectAction_() } * is called to perform connection initialization actions. *

* @param host The remote host. * @param port The port to connect to on the remote host. * @param localAddr The local address to use. * @param localPort The local port to use. * @exception SocketException If the socket timeout could not be set. * @exception IOException If the socket could not be opened. In most * cases you will only want to catch IOException since SocketException is * derived from it. */ public void connect(InetAddress host, int port, InetAddress localAddr, int localPort) throws SocketException, IOException { _hostname_ = null; _socket_ = _socketFactory_.createSocket(); if (receiveBufferSize != -1) { _socket_.setReceiveBufferSize(receiveBufferSize); } if (sendBufferSize != -1) { _socket_.setSendBufferSize(sendBufferSize); } _socket_.bind(new InetSocketAddress(localAddr, localPort)); _socket_.connect(new InetSocketAddress(host, port), connectTimeout); _connectAction_(); } /** * Opens a Socket connected to a remote host at the specified port and * originating from the specified local address and port. * Before returning, {@link #_connectAction_ _connectAction_() } * is called to perform connection initialization actions. *

* @param hostname The name of the remote host. * @param port The port to connect to on the remote host. * @param localAddr The local address to use. * @param localPort The local port to use. * @exception SocketException If the socket timeout could not be set. * @exception IOException If the socket could not be opened. In most * cases you will only want to catch IOException since SocketException is * derived from it. * @exception java.net.UnknownHostException If the hostname cannot be resolved. */ public void connect(String hostname, int port, InetAddress localAddr, int localPort) throws SocketException, IOException { connect(InetAddress.getByName(hostname), port, localAddr, localPort); _hostname_ = hostname; } /** * Opens a Socket connected to a remote host at the current default port * and originating from the current host at a system assigned port. * Before returning, {@link #_connectAction_ _connectAction_() } * is called to perform connection initialization actions. *

* @param host The remote host. * @exception SocketException If the socket timeout could not be set. * @exception IOException If the socket could not be opened. In most * cases you will only want to catch IOException since SocketException is * derived from it. */ public void connect(InetAddress host) throws SocketException, IOException { _hostname_ = null; connect(host, _defaultPort_); } /** * Opens a Socket connected to a remote host at the current default * port and originating from the current host at a system assigned port. * Before returning, {@link #_connectAction_ _connectAction_() } * is called to perform connection initialization actions. *

* @param hostname The name of the remote host. * @exception SocketException If the socket timeout could not be set. * @exception IOException If the socket could not be opened. In most * cases you will only want to catch IOException since SocketException is * derived from it. * @exception java.net.UnknownHostException If the hostname cannot be resolved. */ public void connect(String hostname) throws SocketException, IOException { connect(hostname, _defaultPort_); _hostname_ = hostname; } /** * Disconnects the socket connection. * You should call this method after you've finished using the class * instance and also before you call * {@link #connect connect() } * again. _isConnected_ is set to false, _socket_ is set to null, * _input_ is set to null, and _output_ is set to null. *

* @exception IOException If there is an error closing the socket. */ public void disconnect() throws IOException { closeQuietly(_socket_); closeQuietly(_input_); closeQuietly(_output_); _socket_ = null; _hostname_ = null; _input_ = null; _output_ = null; } private void closeQuietly(Socket socket) { if (socket != null){ try { socket.close(); } catch (IOException e) { // Ignored } } } private void closeQuietly(Closeable close){ if (close != null){ try { close.close(); } catch (IOException e) { // Ignored } } } /** * Returns true if the client is currently connected to a server. *

* Delegates to {@link Socket#isConnected()} * @return True if the client is currently connected to a server, * false otherwise. */ public boolean isConnected() { if (_socket_ == null) { return false; } return _socket_.isConnected(); } /** * Make various checks on the socket to test if it is available for use. * Note that the only sure test is to use it, but these checks may help * in some cases. * @see NET-350 * @return {@code true} if the socket appears to be available for use * @since 3.0 */ public boolean isAvailable(){ if (isConnected()) { try { if (_socket_.getInetAddress() == null) { return false; } if (_socket_.getPort() == 0) { return false; } if (_socket_.getRemoteSocketAddress() == null) { return false; } if (_socket_.isClosed()) { return false; } /* these aren't exact checks (a Socket can be half-open), but since we usually require two-way data transfer, we check these here too: */ if (_socket_.isInputShutdown()) { return false; } if (_socket_.isOutputShutdown()) { return false; } /* ignore the result, catch exceptions: */ _socket_.getInputStream(); _socket_.getOutputStream(); } catch (IOException ioex) { return false; } return true; } else { return false; } } /** * Sets the default port the SocketClient should connect to when a port * is not specified. The {@link #_defaultPort_ _defaultPort_ } * variable stores this value. If never set, the default port is equal * to zero. *

* @param port The default port to set. */ public void setDefaultPort(int port) { _defaultPort_ = port; } /** * Returns the current value of the default port (stored in * {@link #_defaultPort_ _defaultPort_ }). *

* @return The current value of the default port. */ public int getDefaultPort() { return _defaultPort_; } /** * Set the default timeout in milliseconds to use when opening a socket. * This value is only used previous to a call to * {@link #connect connect()} * and should not be confused with {@link #setSoTimeout setSoTimeout()} * which operates on an the currently opened socket. _timeout_ contains * the new timeout value. *

* @param timeout The timeout in milliseconds to use for the socket * connection. */ public void setDefaultTimeout(int timeout) { _timeout_ = timeout; } /** * Returns the default timeout in milliseconds that is used when * opening a socket. *

* @return The default timeout in milliseconds that is used when * opening a socket. */ public int getDefaultTimeout() { return _timeout_; } /** * Set the timeout in milliseconds of a currently open connection. * Only call this method after a connection has been opened * by {@link #connect connect()}. *

* To set the initial timeout, use {@link #setDefaultTimeout(int)} instead. * * @param timeout The timeout in milliseconds to use for the currently * open socket connection. * @exception SocketException If the operation fails. * @throws NullPointerException if the socket is not currently open */ public void setSoTimeout(int timeout) throws SocketException { _socket_.setSoTimeout(timeout); } /** * Set the underlying socket send buffer size. *

* @param size The size of the buffer in bytes. * @throws SocketException never thrown, but subclasses might want to do so * @since 2.0 */ public void setSendBufferSize(int size) throws SocketException { sendBufferSize = size; } /** * Get the current sendBuffer size * @return the size, or -1 if not initialised * @since 3.0 */ protected int getSendBufferSize(){ return sendBufferSize; } /** * Sets the underlying socket receive buffer size. *

* @param size The size of the buffer in bytes. * @throws SocketException never (but subclasses may wish to do so) * @since 2.0 */ public void setReceiveBufferSize(int size) throws SocketException { receiveBufferSize = size; } /** * Get the current receivedBuffer size * @return the size, or -1 if not initialised * @since 3.0 */ protected int getReceiveBufferSize(){ return receiveBufferSize; } /** * Returns the timeout in milliseconds of the currently opened socket. *

* @return The timeout in milliseconds of the currently opened socket. * @exception SocketException If the operation fails. * @throws NullPointerException if the socket is not currently open */ public int getSoTimeout() throws SocketException { return _socket_.getSoTimeout(); } /** * Enables or disables the Nagle's algorithm (TCP_NODELAY) on the * currently opened socket. *

* @param on True if Nagle's algorithm is to be enabled, false if not. * @exception SocketException If the operation fails. * @throws NullPointerException if the socket is not currently open */ public void setTcpNoDelay(boolean on) throws SocketException { _socket_.setTcpNoDelay(on); } /** * Returns true if Nagle's algorithm is enabled on the currently opened * socket. *

* @return True if Nagle's algorithm is enabled on the currently opened * socket, false otherwise. * @exception SocketException If the operation fails. * @throws NullPointerException if the socket is not currently open */ public boolean getTcpNoDelay() throws SocketException { return _socket_.getTcpNoDelay(); } /** * Sets the SO_KEEPALIVE flag on the currently opened socket. * * From the Javadocs, the default keepalive time is 2 hours (although this is * implementation dependent). It looks as though the Windows WSA sockets implementation * allows a specific keepalive value to be set, although this seems not to be the case on * other systems. * @param keepAlive If true, keepAlive is turned on * @throws SocketException if there is a problem with the socket * @throws NullPointerException if the socket is not currently open * @since 2.2 */ public void setKeepAlive(boolean keepAlive) throws SocketException { _socket_.setKeepAlive(keepAlive); } /** * Returns the current value of the SO_KEEPALIVE flag on the currently opened socket. * Delegates to {@link Socket#getKeepAlive()} * @return True if SO_KEEPALIVE is enabled. * @throws SocketException if there is a problem with the socket * @throws NullPointerException if the socket is not currently open * @since 2.2 */ public boolean getKeepAlive() throws SocketException { return _socket_.getKeepAlive(); } /** * Sets the SO_LINGER timeout on the currently opened socket. *

* @param on True if linger is to be enabled, false if not. * @param val The linger timeout (in hundredths of a second?) * @exception SocketException If the operation fails. * @throws NullPointerException if the socket is not currently open */ public void setSoLinger(boolean on, int val) throws SocketException { _socket_.setSoLinger(on, val); } /** * Returns the current SO_LINGER timeout of the currently opened socket. *

* @return The current SO_LINGER timeout. If SO_LINGER is disabled returns * -1. * @exception SocketException If the operation fails. * @throws NullPointerException if the socket is not currently open */ public int getSoLinger() throws SocketException { return _socket_.getSoLinger(); } /** * Returns the port number of the open socket on the local host used * for the connection. * Delegates to {@link Socket#getLocalPort()} *

* @return The port number of the open socket on the local host used * for the connection. * @throws NullPointerException if the socket is not currently open */ public int getLocalPort() { return _socket_.getLocalPort(); } /** * Returns the local address to which the client's socket is bound. * Delegates to {@link Socket#getLocalAddress()} *

* @return The local address to which the client's socket is bound. * @throws NullPointerException if the socket is not currently open */ public InetAddress getLocalAddress() { return _socket_.getLocalAddress(); } /** * Returns the port number of the remote host to which the client is * connected. * Delegates to {@link Socket#getPort()} *

* @return The port number of the remote host to which the client is * connected. * @throws NullPointerException if the socket is not currently open */ public int getRemotePort() { return _socket_.getPort(); } /** * @return The remote address to which the client is connected. * Delegates to {@link Socket#getInetAddress()} * @throws NullPointerException if the socket is not currently open */ public InetAddress getRemoteAddress() { return _socket_.getInetAddress(); } /** * Verifies that the remote end of the given socket is connected to the * the same host that the SocketClient is currently connected to. This * is useful for doing a quick security check when a client needs to * accept a connection from a server, such as an FTP data connection or * a BSD R command standard error stream. *

* @param socket the item to check against * @return True if the remote hosts are the same, false if not. */ public boolean verifyRemote(Socket socket) { InetAddress host1, host2; host1 = socket.getInetAddress(); host2 = getRemoteAddress(); return host1.equals(host2); } /** * Sets the SocketFactory used by the SocketClient to open socket * connections. If the factory value is null, then a default * factory is used (only do this to reset the factory after having * previously altered it). * Any proxy setting is discarded. *

* @param factory The new SocketFactory the SocketClient should use. */ public void setSocketFactory(SocketFactory factory) { if (factory == null) { _socketFactory_ = __DEFAULT_SOCKET_FACTORY; } else { _socketFactory_ = factory; } // re-setting the socket factory makes the proxy setting useless, // so set the field to null so that getProxy() doesn't return a // Proxy that we're actually not using. connProxy = null; } /** * Sets the ServerSocketFactory used by the SocketClient to open ServerSocket * connections. If the factory value is null, then a default * factory is used (only do this to reset the factory after having * previously altered it). *

* @param factory The new ServerSocketFactory the SocketClient should use. * @since 2.0 */ public void setServerSocketFactory(ServerSocketFactory factory) { if (factory == null) { _serverSocketFactory_ = __DEFAULT_SERVER_SOCKET_FACTORY; } else { _serverSocketFactory_ = factory; } } /** * Sets the connection timeout in milliseconds, which will be passed to the {@link Socket} object's * connect() method. * @param connectTimeout The connection timeout to use (in ms) * @since 2.0 */ public void setConnectTimeout(int connectTimeout) { this.connectTimeout = connectTimeout; } /** * Get the underlying socket connection timeout. * @return timeout (in ms) * @since 2.0 */ public int getConnectTimeout() { return connectTimeout; } /** * Get the underlying {@link ServerSocketFactory} * @return The server socket factory * @since 2.2 */ public ServerSocketFactory getServerSocketFactory() { return _serverSocketFactory_; } /** * Adds a ProtocolCommandListener. * * @param listener The ProtocolCommandListener to add. * @since 3.0 */ public void addProtocolCommandListener(ProtocolCommandListener listener) { getCommandSupport().addProtocolCommandListener(listener); } /** * Removes a ProtocolCommandListener. * * @param listener The ProtocolCommandListener to remove. * @since 3.0 */ public void removeProtocolCommandListener(ProtocolCommandListener listener) { getCommandSupport().removeProtocolCommandListener(listener); } /** * If there are any listeners, send them the reply details. * * @param replyCode the code extracted from the reply * @param reply the full reply text * @since 3.0 */ protected void fireReplyReceived(int replyCode, String reply) { if (getCommandSupport().getListenerCount() > 0) { getCommandSupport().fireReplyReceived(replyCode, reply); } } /** * If there are any listeners, send them the command details. * * @param command the command name * @param message the complete message, including command name * @since 3.0 */ protected void fireCommandSent(String command, String message) { if (getCommandSupport().getListenerCount() > 0) { getCommandSupport().fireCommandSent(command, message); } } /** * Create the CommandSupport instance if required */ protected void createCommandSupport(){ __commandSupport = new ProtocolCommandSupport(this); } /** * Subclasses can override this if they need to provide their own * instance field for backwards compatibility. * * @return the CommandSupport instance, may be {@code null} * @since 3.0 */ protected ProtocolCommandSupport getCommandSupport() { return __commandSupport; } /** * Sets the proxy for use with all the connections. * The proxy is used for connections established after the * call to this method. * * @param proxy the new proxy for connections. * @since 3.2 */ public void setProxy(Proxy proxy) { setSocketFactory(new DefaultSocketFactory(proxy)); connProxy = proxy; } /** * Gets the proxy for use with all the connections. * @return the current proxy for connections. */ public Proxy getProxy() { return connProxy; } /** * Gets the charset name. * * @return the charset. * @since 3.3 * @deprecated Since the code now requires Java 1.6 as a mininmum */ @Deprecated public String getCharsetName() { return charset.name(); } /** * Gets the charset. * * @return the charset. * @since 3.3 */ public Charset getCharset() { return charset; } /** * Sets the charset. * * @param charset the charset. * @since 3.3 */ public void setCharset(Charset charset) { this.charset = charset; } /* * N.B. Fields cannot be pulled up into a super-class without breaking binary compatibility, * so the abstract method is needed to pass the instance to the methods which were moved here. */ } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/EchoOptionHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * Implements the telnet echo option RFC 857. ***/ public class EchoOptionHandler extends TelnetOptionHandler { /*** * Constructor for the EchoOptionHandler. Allows defining desired * initial setting for local/remote activation of this option and * behaviour in case a local/remote activation request for this * option is received. *

* @param initlocal - if set to true, a WILL is sent upon connection. * @param initremote - if set to true, a DO is sent upon connection. * @param acceptlocal - if set to true, any DO request is accepted. * @param acceptremote - if set to true, any WILL request is accepted. ***/ public EchoOptionHandler(boolean initlocal, boolean initremote, boolean acceptlocal, boolean acceptremote) { super(TelnetOption.ECHO, initlocal, initremote, acceptlocal, acceptremote); } /*** * Constructor for the EchoOptionHandler. Initial and accept * behaviour flags are set to false ***/ public EchoOptionHandler() { super(TelnetOption.ECHO, false, false, false, false); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/InvalidTelnetOptionException.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * The InvalidTelnetOptionException is the exception that is * thrown whenever a TelnetOptionHandler with an invlaid * option code is registered in TelnetClient with addOptionHandler. ***/ public class InvalidTelnetOptionException extends Exception { private static final long serialVersionUID = -2516777155928793597L; /*** * Option code ***/ private final int optionCode; /*** * Error message ***/ private final String msg; /*** * Constructor for the exception. *

* @param message - Error message. * @param optcode - Option code. ***/ public InvalidTelnetOptionException(String message, int optcode) { optionCode = optcode; msg = message; } /*** * Gets the error message of ths exception. *

* @return the error message. ***/ @Override public String getMessage() { return (msg + ": " + optionCode); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/SimpleOptionHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * Simple option handler that can be used for options * that don't require subnegotiation. ***/ public class SimpleOptionHandler extends TelnetOptionHandler { /*** * Constructor for the SimpleOptionHandler. Allows defining desired * initial setting for local/remote activation of this option and * behaviour in case a local/remote activation request for this * option is received. *

* @param optcode - option code. * @param initlocal - if set to true, a WILL is sent upon connection. * @param initremote - if set to true, a DO is sent upon connection. * @param acceptlocal - if set to true, any DO request is accepted. * @param acceptremote - if set to true, any WILL request is accepted. ***/ public SimpleOptionHandler(int optcode, boolean initlocal, boolean initremote, boolean acceptlocal, boolean acceptremote) { super(optcode, initlocal, initremote, acceptlocal, acceptremote); } /*** * Constructor for the SimpleOptionHandler. Initial and accept * behaviour flags are set to false *

* @param optcode - option code. ***/ public SimpleOptionHandler(int optcode) { super(optcode, false, false, false, false); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/SuppressGAOptionHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * Implements the telnet suppress go ahead option RFC 858. ***/ public class SuppressGAOptionHandler extends TelnetOptionHandler { /*** * Constructor for the SuppressGAOptionHandler. Allows defining desired * initial setting for local/remote activation of this option and * behaviour in case a local/remote activation request for this * option is received. *

* @param initlocal - if set to true, a WILL is sent upon connection. * @param initremote - if set to true, a DO is sent upon connection. * @param acceptlocal - if set to true, any DO request is accepted. * @param acceptremote - if set to true, any WILL request is accepted. ***/ public SuppressGAOptionHandler(boolean initlocal, boolean initremote, boolean acceptlocal, boolean acceptremote) { super(TelnetOption.SUPPRESS_GO_AHEAD, initlocal, initremote, acceptlocal, acceptremote); } /*** * Constructor for the SuppressGAOptionHandler. Initial and accept * behaviour flags are set to false ***/ public SuppressGAOptionHandler() { super(TelnetOption.SUPPRESS_GO_AHEAD, false, false, false, false); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/Telnet.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.OutputStream; import java.io.IOException; import java.util.Arrays; import org.apache.commons.net.SocketClient; class Telnet extends SocketClient { static final boolean debug = /*true;*/ false; static final boolean debugoptions = /*true;*/ false; static final byte[] _COMMAND_DO = { (byte)TelnetCommand.IAC, (byte)TelnetCommand.DO }; static final byte[] _COMMAND_DONT = { (byte)TelnetCommand.IAC, (byte)TelnetCommand.DONT }; static final byte[] _COMMAND_WILL = { (byte)TelnetCommand.IAC, (byte)TelnetCommand.WILL }; static final byte[] _COMMAND_WONT = { (byte)TelnetCommand.IAC, (byte)TelnetCommand.WONT }; static final byte[] _COMMAND_SB = { (byte)TelnetCommand.IAC, (byte)TelnetCommand.SB }; static final byte[] _COMMAND_SE = { (byte)TelnetCommand.IAC, (byte)TelnetCommand.SE }; static final int _WILL_MASK = 0x01, _DO_MASK = 0x02, _REQUESTED_WILL_MASK = 0x04, _REQUESTED_DO_MASK = 0x08; /* public */ static final int DEFAULT_PORT = 23; int[] _doResponse, _willResponse, _options; /* TERMINAL-TYPE option (start)*/ /*** * Terminal type option ***/ protected static final int TERMINAL_TYPE = 24; /*** * Send (for subnegotiation) ***/ protected static final int TERMINAL_TYPE_SEND = 1; /*** * Is (for subnegotiation) ***/ protected static final int TERMINAL_TYPE_IS = 0; /*** * Is sequence (for subnegotiation) ***/ static final byte[] _COMMAND_IS = { (byte) TERMINAL_TYPE, (byte) TERMINAL_TYPE_IS }; /*** * Terminal type ***/ private String terminalType = null; /* TERMINAL-TYPE option (end)*/ /* open TelnetOptionHandler functionality (start)*/ /*** * Array of option handlers ***/ private final TelnetOptionHandler optionHandlers[]; /* open TelnetOptionHandler functionality (end)*/ /* Code Section added for supporting AYT (start)*/ /*** * AYT sequence ***/ static final byte[] _COMMAND_AYT = { (byte) TelnetCommand.IAC, (byte) TelnetCommand.AYT }; /*** * monitor to wait for AYT ***/ private final Object aytMonitor = new Object(); /*** * flag for AYT ***/ private volatile boolean aytFlag = true; /* Code Section added for supporting AYT (end)*/ /*** * The stream on which to spy ***/ private volatile OutputStream spyStream = null; /*** * The notification handler ***/ private TelnetNotificationHandler __notifhand = null; /*** * Empty Constructor ***/ Telnet() { setDefaultPort(DEFAULT_PORT); _doResponse = new int[TelnetOption.MAX_OPTION_VALUE + 1]; _willResponse = new int[TelnetOption.MAX_OPTION_VALUE + 1]; _options = new int[TelnetOption.MAX_OPTION_VALUE + 1]; optionHandlers = new TelnetOptionHandler[TelnetOption.MAX_OPTION_VALUE + 1]; } /* TERMINAL-TYPE option (start)*/ /*** * This constructor lets you specify the terminal type. * * @param termtype - terminal type to be negotiated (ej. VT100) ***/ Telnet(String termtype) { setDefaultPort(DEFAULT_PORT); _doResponse = new int[TelnetOption.MAX_OPTION_VALUE + 1]; _willResponse = new int[TelnetOption.MAX_OPTION_VALUE + 1]; _options = new int[TelnetOption.MAX_OPTION_VALUE + 1]; terminalType = termtype; optionHandlers = new TelnetOptionHandler[TelnetOption.MAX_OPTION_VALUE + 1]; } /* TERMINAL-TYPE option (end)*/ /*** * Looks for the state of the option. * * @return returns true if a will has been acknowledged * * @param option - option code to be looked up. ***/ boolean _stateIsWill(int option) { return ((_options[option] & _WILL_MASK) != 0); } /*** * Looks for the state of the option. * * @return returns true if a wont has been acknowledged * * @param option - option code to be looked up. ***/ boolean _stateIsWont(int option) { return !_stateIsWill(option); } /*** * Looks for the state of the option. * * @return returns true if a do has been acknowledged * * @param option - option code to be looked up. ***/ boolean _stateIsDo(int option) { return ((_options[option] & _DO_MASK) != 0); } /*** * Looks for the state of the option. * * @return returns true if a dont has been acknowledged * * @param option - option code to be looked up. ***/ boolean _stateIsDont(int option) { return !_stateIsDo(option); } /*** * Looks for the state of the option. * * @return returns true if a will has been reuqested * * @param option - option code to be looked up. ***/ boolean _requestedWill(int option) { return ((_options[option] & _REQUESTED_WILL_MASK) != 0); } /*** * Looks for the state of the option. * * @return returns true if a wont has been reuqested * * @param option - option code to be looked up. ***/ boolean _requestedWont(int option) { return !_requestedWill(option); } /*** * Looks for the state of the option. * * @return returns true if a do has been reuqested * * @param option - option code to be looked up. ***/ boolean _requestedDo(int option) { return ((_options[option] & _REQUESTED_DO_MASK) != 0); } /*** * Looks for the state of the option. * * @return returns true if a dont has been reuqested * * @param option - option code to be looked up. ***/ boolean _requestedDont(int option) { return !_requestedDo(option); } /*** * Sets the state of the option. * * @param option - option code to be set. * @throws IOException ***/ void _setWill(int option) throws IOException { _options[option] |= _WILL_MASK; /* open TelnetOptionHandler functionality (start)*/ if (_requestedWill(option)) { if (optionHandlers[option] != null) { optionHandlers[option].setWill(true); int subneg[] = optionHandlers[option].startSubnegotiationLocal(); if (subneg != null) { _sendSubnegotiation(subneg); } } } /* open TelnetOptionHandler functionality (end)*/ } /*** * Sets the state of the option. * * @param option - option code to be set. * @throws IOException ***/ void _setDo(int option) throws IOException { _options[option] |= _DO_MASK; /* open TelnetOptionHandler functionality (start)*/ if (_requestedDo(option)) { if (optionHandlers[option] != null) { optionHandlers[option].setDo(true); int subneg[] = optionHandlers[option].startSubnegotiationRemote(); if (subneg != null) { _sendSubnegotiation(subneg); } } } /* open TelnetOptionHandler functionality (end)*/ } /*** * Sets the state of the option. * * @param option - option code to be set. ***/ void _setWantWill(int option) { _options[option] |= _REQUESTED_WILL_MASK; } /*** * Sets the state of the option. * * @param option - option code to be set. ***/ void _setWantDo(int option) { _options[option] |= _REQUESTED_DO_MASK; } /*** * Sets the state of the option. * * @param option - option code to be set. ***/ void _setWont(int option) { _options[option] &= ~_WILL_MASK; /* open TelnetOptionHandler functionality (start)*/ if (optionHandlers[option] != null) { optionHandlers[option].setWill(false); } /* open TelnetOptionHandler functionality (end)*/ } /*** * Sets the state of the option. * * @param option - option code to be set. ***/ void _setDont(int option) { _options[option] &= ~_DO_MASK; /* open TelnetOptionHandler functionality (start)*/ if (optionHandlers[option] != null) { optionHandlers[option].setDo(false); } /* open TelnetOptionHandler functionality (end)*/ } /*** * Sets the state of the option. * * @param option - option code to be set. ***/ void _setWantWont(int option) { _options[option] &= ~_REQUESTED_WILL_MASK; } /*** * Sets the state of the option. * * @param option - option code to be set. ***/ void _setWantDont(int option) { _options[option] &= ~_REQUESTED_DO_MASK; } /** * Processes a COMMAND. * * @param command - option code to be set. **/ void _processCommand(int command) { if (debugoptions) { System.err.println("RECEIVED COMMAND: " + command); } if (__notifhand != null) { __notifhand.receivedNegotiation( TelnetNotificationHandler.RECEIVED_COMMAND, command); } } /** * Processes a DO request. * * @param option - option code to be set. * @throws IOException - Exception in I/O. **/ void _processDo(int option) throws IOException { if (debugoptions) { System.err.println("RECEIVED DO: " + TelnetOption.getOption(option)); } if (__notifhand != null) { __notifhand.receivedNegotiation( TelnetNotificationHandler.RECEIVED_DO, option); } boolean acceptNewState = false; /* open TelnetOptionHandler functionality (start)*/ if (optionHandlers[option] != null) { acceptNewState = optionHandlers[option].getAcceptLocal(); } else { /* open TelnetOptionHandler functionality (end)*/ /* TERMINAL-TYPE option (start)*/ if (option == TERMINAL_TYPE) { if ((terminalType != null) && (terminalType.length() > 0)) { acceptNewState = true; } } /* TERMINAL-TYPE option (end)*/ /* open TelnetOptionHandler functionality (start)*/ } /* open TelnetOptionHandler functionality (end)*/ if (_willResponse[option] > 0) { --_willResponse[option]; if (_willResponse[option] > 0 && _stateIsWill(option)) { --_willResponse[option]; } } if (_willResponse[option] == 0) { if (_requestedWont(option)) { switch (option) { default: break; } if (acceptNewState) { _setWantWill(option); _sendWill(option); } else { ++_willResponse[option]; _sendWont(option); } } else { // Other end has acknowledged option. switch (option) { default: break; } } } _setWill(option); } /** * Processes a DONT request. * * @param option - option code to be set. * @throws IOException - Exception in I/O. **/ void _processDont(int option) throws IOException { if (debugoptions) { System.err.println("RECEIVED DONT: " + TelnetOption.getOption(option)); } if (__notifhand != null) { __notifhand.receivedNegotiation( TelnetNotificationHandler.RECEIVED_DONT, option); } if (_willResponse[option] > 0) { --_willResponse[option]; if (_willResponse[option] > 0 && _stateIsWont(option)) { --_willResponse[option]; } } if (_willResponse[option] == 0 && _requestedWill(option)) { switch (option) { default: break; } /* FIX for a BUG in the negotiation (start)*/ if ((_stateIsWill(option)) || (_requestedWill(option))) { _sendWont(option); } _setWantWont(option); /* FIX for a BUG in the negotiation (end)*/ } _setWont(option); } /** * Processes a WILL request. * * @param option - option code to be set. * @throws IOException - Exception in I/O. **/ void _processWill(int option) throws IOException { if (debugoptions) { System.err.println("RECEIVED WILL: " + TelnetOption.getOption(option)); } if (__notifhand != null) { __notifhand.receivedNegotiation( TelnetNotificationHandler.RECEIVED_WILL, option); } boolean acceptNewState = false; /* open TelnetOptionHandler functionality (start)*/ if (optionHandlers[option] != null) { acceptNewState = optionHandlers[option].getAcceptRemote(); } /* open TelnetOptionHandler functionality (end)*/ if (_doResponse[option] > 0) { --_doResponse[option]; if (_doResponse[option] > 0 && _stateIsDo(option)) { --_doResponse[option]; } } if (_doResponse[option] == 0 && _requestedDont(option)) { switch (option) { default: break; } if (acceptNewState) { _setWantDo(option); _sendDo(option); } else { ++_doResponse[option]; _sendDont(option); } } _setDo(option); } /** * Processes a WONT request. * * @param option - option code to be set. * @throws IOException - Exception in I/O. **/ void _processWont(int option) throws IOException { if (debugoptions) { System.err.println("RECEIVED WONT: " + TelnetOption.getOption(option)); } if (__notifhand != null) { __notifhand.receivedNegotiation( TelnetNotificationHandler.RECEIVED_WONT, option); } if (_doResponse[option] > 0) { --_doResponse[option]; if (_doResponse[option] > 0 && _stateIsDont(option)) { --_doResponse[option]; } } if (_doResponse[option] == 0 && _requestedDo(option)) { switch (option) { default: break; } /* FIX for a BUG in the negotiation (start)*/ if ((_stateIsDo(option)) || (_requestedDo(option))) { _sendDont(option); } _setWantDont(option); /* FIX for a BUG in the negotiation (end)*/ } _setDont(option); } /* TERMINAL-TYPE option (start)*/ /** * Processes a suboption negotiation. * * @param suboption - subnegotiation data received * @param suboptionLength - length of data received * @throws IOException - Exception in I/O. **/ void _processSuboption(int suboption[], int suboptionLength) throws IOException { if (debug) { System.err.println("PROCESS SUBOPTION."); } /* open TelnetOptionHandler functionality (start)*/ if (suboptionLength > 0) { if (optionHandlers[suboption[0]] != null) { int responseSuboption[] = optionHandlers[suboption[0]].answerSubnegotiation(suboption, suboptionLength); _sendSubnegotiation(responseSuboption); } else { if (suboptionLength > 1) { if (debug) { for (int ii = 0; ii < suboptionLength; ii++) { System.err.println("SUB[" + ii + "]: " + suboption[ii]); } } if ((suboption[0] == TERMINAL_TYPE) && (suboption[1] == TERMINAL_TYPE_SEND)) { _sendTerminalType(); } } } } /* open TelnetOptionHandler functionality (end)*/ } /*** * Sends terminal type information. * * @throws IOException - Exception in I/O. ***/ final synchronized void _sendTerminalType() throws IOException { if (debug) { System.err.println("SEND TERMINAL-TYPE: " + terminalType); } if (terminalType != null) { _output_.write(_COMMAND_SB); _output_.write(_COMMAND_IS); _output_.write(terminalType.getBytes(getCharset())); _output_.write(_COMMAND_SE); _output_.flush(); } } /* TERMINAL-TYPE option (end)*/ /* open TelnetOptionHandler functionality (start)*/ /** * Manages subnegotiation for Terminal Type. * * @param subn - subnegotiation data to be sent * @throws IOException - Exception in I/O. **/ final synchronized void _sendSubnegotiation(int subn[]) throws IOException { if (debug) { System.err.println("SEND SUBNEGOTIATION: "); if (subn != null) { System.err.println(Arrays.toString(subn)); } } if (subn != null) { _output_.write(_COMMAND_SB); // Note _output_ is buffered, so might as well simplify by writing single bytes for (int element : subn) { byte b = (byte) element; if (b == (byte) TelnetCommand.IAC) { // cast is necessary because IAC is outside the signed byte range _output_.write(b); // double any IAC bytes } _output_.write(b); } _output_.write(_COMMAND_SE); /* Code Section added for sending the negotiation ASAP (start)*/ _output_.flush(); /* Code Section added for sending the negotiation ASAP (end)*/ } } /* open TelnetOptionHandler functionality (end)*/ /** * Sends a command, automatically adds IAC prefix and flushes the output. * * @param cmd - command data to be sent * @throws IOException - Exception in I/O. * @since 3.0 */ final synchronized void _sendCommand(byte cmd) throws IOException { _output_.write(TelnetCommand.IAC); _output_.write(cmd); _output_.flush(); } /* Code Section added for supporting AYT (start)*/ /*** * Processes the response of an AYT ***/ final synchronized void _processAYTResponse() { if (!aytFlag) { synchronized (aytMonitor) { aytFlag = true; aytMonitor.notifyAll(); } } } /* Code Section added for supporting AYT (end)*/ /*** * Called upon connection. * * @throws IOException - Exception in I/O. ***/ @Override protected void _connectAction_() throws IOException { /* (start). BUGFIX: clean the option info for each connection*/ for (int ii = 0; ii < TelnetOption.MAX_OPTION_VALUE + 1; ii++) { _doResponse[ii] = 0; _willResponse[ii] = 0; _options[ii] = 0; if (optionHandlers[ii] != null) { optionHandlers[ii].setDo(false); optionHandlers[ii].setWill(false); } } /* (end). BUGFIX: clean the option info for each connection*/ super._connectAction_(); _input_ = new BufferedInputStream(_input_); _output_ = new BufferedOutputStream(_output_); /* open TelnetOptionHandler functionality (start)*/ for (int ii = 0; ii < TelnetOption.MAX_OPTION_VALUE + 1; ii++) { if (optionHandlers[ii] != null) { if (optionHandlers[ii].getInitLocal()) { _requestWill(optionHandlers[ii].getOptionCode()); } if (optionHandlers[ii].getInitRemote()) { _requestDo(optionHandlers[ii].getOptionCode()); } } } /* open TelnetOptionHandler functionality (end)*/ } /** * Sends a DO. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _sendDo(int option) throws IOException { if (debug || debugoptions) { System.err.println("DO: " + TelnetOption.getOption(option)); } _output_.write(_COMMAND_DO); _output_.write(option); /* Code Section added for sending the negotiation ASAP (start)*/ _output_.flush(); /* Code Section added for sending the negotiation ASAP (end)*/ } /** * Requests a DO. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _requestDo(int option) throws IOException { if ((_doResponse[option] == 0 && _stateIsDo(option)) || _requestedDo(option)) { return ; } _setWantDo(option); ++_doResponse[option]; _sendDo(option); } /** * Sends a DONT. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _sendDont(int option) throws IOException { if (debug || debugoptions) { System.err.println("DONT: " + TelnetOption.getOption(option)); } _output_.write(_COMMAND_DONT); _output_.write(option); /* Code Section added for sending the negotiation ASAP (start)*/ _output_.flush(); /* Code Section added for sending the negotiation ASAP (end)*/ } /** * Requests a DONT. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _requestDont(int option) throws IOException { if ((_doResponse[option] == 0 && _stateIsDont(option)) || _requestedDont(option)) { return ; } _setWantDont(option); ++_doResponse[option]; _sendDont(option); } /** * Sends a WILL. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _sendWill(int option) throws IOException { if (debug || debugoptions) { System.err.println("WILL: " + TelnetOption.getOption(option)); } _output_.write(_COMMAND_WILL); _output_.write(option); /* Code Section added for sending the negotiation ASAP (start)*/ _output_.flush(); /* Code Section added for sending the negotiation ASAP (end)*/ } /** * Requests a WILL. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _requestWill(int option) throws IOException { if ((_willResponse[option] == 0 && _stateIsWill(option)) || _requestedWill(option)) { return ; } _setWantWill(option); ++_doResponse[option]; _sendWill(option); } /** * Sends a WONT. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _sendWont(int option) throws IOException { if (debug || debugoptions) { System.err.println("WONT: " + TelnetOption.getOption(option)); } _output_.write(_COMMAND_WONT); _output_.write(option); /* Code Section added for sending the negotiation ASAP (start)*/ _output_.flush(); /* Code Section added for sending the negotiation ASAP (end)*/ } /** * Requests a WONT. * * @param option - Option code. * @throws IOException - Exception in I/O. **/ final synchronized void _requestWont(int option) throws IOException { if ((_willResponse[option] == 0 && _stateIsWont(option)) || _requestedWont(option)) { return ; } _setWantWont(option); ++_doResponse[option]; _sendWont(option); } /** * Sends a byte. * * @param b - byte to send * @throws IOException - Exception in I/O. **/ final synchronized void _sendByte(int b) throws IOException { _output_.write(b); /* Code Section added for supporting spystreams (start)*/ _spyWrite(b); /* Code Section added for supporting spystreams (end)*/ } /* Code Section added for supporting AYT (start)*/ /** * Sends an Are You There sequence and waits for the result. * * @param timeout - Time to wait for a response (millis.) * @throws IOException - Exception in I/O. * @throws IllegalArgumentException - Illegal argument * @throws InterruptedException - Interrupted during wait. * @return true if AYT received a response, false otherwise **/ final boolean _sendAYT(long timeout) throws IOException, IllegalArgumentException, InterruptedException { boolean retValue = false; synchronized (aytMonitor) { synchronized (this) { aytFlag = false; _output_.write(_COMMAND_AYT); _output_.flush(); } aytMonitor.wait(timeout); if (!aytFlag) { retValue = false; aytFlag = true; } else { retValue = true; } } return (retValue); } /* Code Section added for supporting AYT (end)*/ /* open TelnetOptionHandler functionality (start)*/ /** * Registers a new TelnetOptionHandler for this telnet to use. * * @param opthand - option handler to be registered. * @throws InvalidTelnetOptionException - The option code is invalid. * @throws IOException on error **/ void addOptionHandler(TelnetOptionHandler opthand) throws InvalidTelnetOptionException, IOException { int optcode = opthand.getOptionCode(); if (TelnetOption.isValidOption(optcode)) { if (optionHandlers[optcode] == null) { optionHandlers[optcode] = opthand; if (isConnected()) { if (opthand.getInitLocal()) { _requestWill(optcode); } if (opthand.getInitRemote()) { _requestDo(optcode); } } } else { throw (new InvalidTelnetOptionException( "Already registered option", optcode)); } } else { throw (new InvalidTelnetOptionException( "Invalid Option Code", optcode)); } } /** * Unregisters a TelnetOptionHandler. * * @param optcode - Code of the option to be unregistered. * @throws InvalidTelnetOptionException - The option code is invalid. * @throws IOException on error **/ void deleteOptionHandler(int optcode) throws InvalidTelnetOptionException, IOException { if (TelnetOption.isValidOption(optcode)) { if (optionHandlers[optcode] == null) { throw (new InvalidTelnetOptionException( "Unregistered option", optcode)); } else { TelnetOptionHandler opthand = optionHandlers[optcode]; optionHandlers[optcode] = null; if (opthand.getWill()) { _requestWont(optcode); } if (opthand.getDo()) { _requestDont(optcode); } } } else { throw (new InvalidTelnetOptionException( "Invalid Option Code", optcode)); } } /* open TelnetOptionHandler functionality (end)*/ /* Code Section added for supporting spystreams (start)*/ /*** * Registers an OutputStream for spying what's going on in * the Telnet session. * * @param spystream - OutputStream on which session activity * will be echoed. ***/ void _registerSpyStream(OutputStream spystream) { spyStream = spystream; } /*** * Stops spying this Telnet. * ***/ void _stopSpyStream() { spyStream = null; } /*** * Sends a read char on the spy stream. * * @param ch - character read from the session ***/ void _spyRead(int ch) { OutputStream spy = spyStream; if (spy != null) { try { if (ch != '\r') // never write '\r' on its own { if (ch == '\n') { spy.write('\r'); // add '\r' before '\n' } spy.write(ch); // write original character spy.flush(); } } catch (IOException e) { spyStream = null; } } } /*** * Sends a written char on the spy stream. * * @param ch - character written to the session ***/ void _spyWrite(int ch) { if (!(_stateIsDo(TelnetOption.ECHO) && _requestedDo(TelnetOption.ECHO))) { OutputStream spy = spyStream; if (spy != null) { try { spy.write(ch); spy.flush(); } catch (IOException e) { spyStream = null; } } } } /* Code Section added for supporting spystreams (end)*/ /*** * Registers a notification handler to which will be sent * notifications of received telnet option negotiation commands. * * @param notifhand - TelnetNotificationHandler to be registered ***/ public void registerNotifHandler(TelnetNotificationHandler notifhand) { __notifhand = notifhand; } /*** * Unregisters the current notification handler. * ***/ public void unregisterNotifHandler() { __notifhand = null; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetClient.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; /*** * The TelnetClient class implements the simple network virtual * terminal (NVT) for the Telnet protocol according to RFC 854. It * does not implement any of the extra Telnet options because it * is meant to be used within a Java program providing automated * access to Telnet accessible resources. *

* The class can be used by first connecting to a server using the * SocketClient * {@link org.apache.commons.net.SocketClient#connect connect} * method. Then an InputStream and OutputStream for sending and * receiving data over the Telnet connection can be obtained by * using the {@link #getInputStream getInputStream() } and * {@link #getOutputStream getOutputStream() } methods. * When you finish using the streams, you must call * {@link #disconnect disconnect } rather than simply * closing the streams. ***/ public class TelnetClient extends Telnet { private InputStream __input; private OutputStream __output; protected boolean readerThread = true; private TelnetInputListener inputListener; /*** * Default TelnetClient constructor, sets terminal-type {@code VT100}. ***/ public TelnetClient() { /* TERMINAL-TYPE option (start)*/ super ("VT100"); /* TERMINAL-TYPE option (end)*/ __input = null; __output = null; } /** * Construct an instance with the specified terminal type. * * @param termtype the terminal type to use, e.g. {@code VT100} */ /* TERMINAL-TYPE option (start)*/ public TelnetClient(String termtype) { super (termtype); __input = null; __output = null; } /* TERMINAL-TYPE option (end)*/ void _flushOutputStream() throws IOException { _output_.flush(); } void _closeOutputStream() throws IOException { _output_.close(); } /*** * Handles special connection requirements. * * @exception IOException If an error occurs during connection setup. ***/ @Override protected void _connectAction_() throws IOException { super._connectAction_(); TelnetInputStream tmp = new TelnetInputStream(_input_, this, readerThread); if(readerThread) { tmp._start(); } // __input CANNOT refer to the TelnetInputStream. We run into // blocking problems when some classes use TelnetInputStream, so // we wrap it with a BufferedInputStream which we know is safe. // This blocking behavior requires further investigation, but right // now it looks like classes like InputStreamReader are not implemented // in a safe manner. __input = new BufferedInputStream(tmp); __output = new TelnetOutputStream(this); } /*** * Disconnects the telnet session, closing the input and output streams * as well as the socket. If you have references to the * input and output streams of the telnet connection, you should not * close them yourself, but rather call disconnect to properly close * the connection. ***/ @Override public void disconnect() throws IOException { if (__input != null) { __input.close(); } if (__output != null) { __output.close(); } super.disconnect(); } /*** * Returns the telnet connection output stream. You should not close the * stream when you finish with it. Rather, you should call * {@link #disconnect disconnect }. * * @return The telnet connection output stream. ***/ public OutputStream getOutputStream() { return __output; } /*** * Returns the telnet connection input stream. You should not close the * stream when you finish with it. Rather, you should call * {@link #disconnect disconnect }. * * @return The telnet connection input stream. ***/ public InputStream getInputStream() { return __input; } /*** * Returns the state of the option on the local side. * * @param option - Option to be checked. * * @return The state of the option on the local side. ***/ public boolean getLocalOptionState(int option) { /* BUG (option active when not already acknowledged) (start)*/ return (_stateIsWill(option) && _requestedWill(option)); /* BUG (option active when not already acknowledged) (end)*/ } /*** * Returns the state of the option on the remote side. * * @param option - Option to be checked. * * @return The state of the option on the remote side. ***/ public boolean getRemoteOptionState(int option) { /* BUG (option active when not already acknowledged) (start)*/ return (_stateIsDo(option) && _requestedDo(option)); /* BUG (option active when not already acknowledged) (end)*/ } /* open TelnetOptionHandler functionality (end)*/ /* Code Section added for supporting AYT (start)*/ /*** * Sends an Are You There sequence and waits for the result. * * @param timeout - Time to wait for a response (millis.) * * @return true if AYT received a response, false otherwise * * @throws InterruptedException on error * @throws IllegalArgumentException on error * @throws IOException on error ***/ public boolean sendAYT(long timeout) throws IOException, IllegalArgumentException, InterruptedException { return (_sendAYT(timeout)); } /* Code Section added for supporting AYT (start)*/ /*** * Sends a protocol-specific subnegotiation message to the remote peer. * {@link TelnetClient} will add the IAC SB & IAC SE framing bytes; * the first byte in {@code message} should be the appropriate telnet * option code. * *

* This method does not wait for any response. Subnegotiation messages * sent by the remote end can be handled by registering an approrpriate * {@link TelnetOptionHandler}. *

* * @param message option code followed by subnegotiation payload * @throws IllegalArgumentException if {@code message} has length zero * @throws IOException if an I/O error occurs while writing the message * @since 3.0 ***/ public void sendSubnegotiation(int[] message) throws IOException, IllegalArgumentException { if (message.length < 1) { throw new IllegalArgumentException("zero length message"); } _sendSubnegotiation(message); } /*** * Sends a command byte to the remote peer, adding the IAC prefix. * *

* This method does not wait for any response. Messages * sent by the remote end can be handled by registering an approrpriate * {@link TelnetOptionHandler}. *

* * @param command the code for the command * @throws IOException if an I/O error occurs while writing the message * @throws IllegalArgumentException on error * @since 3.0 ***/ public void sendCommand(byte command) throws IOException, IllegalArgumentException { _sendCommand(command); } /* open TelnetOptionHandler functionality (start)*/ /*** * Registers a new TelnetOptionHandler for this telnet client to use. * * @param opthand - option handler to be registered. * * @throws InvalidTelnetOptionException on error * @throws IOException on error ***/ @Override public void addOptionHandler(TelnetOptionHandler opthand) throws InvalidTelnetOptionException, IOException { super.addOptionHandler(opthand); } /* open TelnetOptionHandler functionality (end)*/ /*** * Unregisters a TelnetOptionHandler. * * @param optcode - Code of the option to be unregistered. * * @throws InvalidTelnetOptionException on error * @throws IOException on error ***/ @Override public void deleteOptionHandler(int optcode) throws InvalidTelnetOptionException, IOException { super.deleteOptionHandler(optcode); } /* Code Section added for supporting spystreams (start)*/ /*** * Registers an OutputStream for spying what's going on in * the TelnetClient session. * * @param spystream - OutputStream on which session activity * will be echoed. ***/ public void registerSpyStream(OutputStream spystream) { super._registerSpyStream(spystream); } /*** * Stops spying this TelnetClient. * ***/ public void stopSpyStream() { super._stopSpyStream(); } /* Code Section added for supporting spystreams (end)*/ /*** * Registers a notification handler to which will be sent * notifications of received telnet option negotiation commands. * * @param notifhand - TelnetNotificationHandler to be registered ***/ @Override public void registerNotifHandler(TelnetNotificationHandler notifhand) { super.registerNotifHandler(notifhand); } /*** * Unregisters the current notification handler. * ***/ @Override public void unregisterNotifHandler() { super.unregisterNotifHandler(); } /*** * Sets the status of the reader thread. * *

* When enabled, a seaparate internal reader thread is created for new * connections to read incoming data as it arrives. This results in * immediate handling of option negotiation, notifications, etc. * (at least until the fixed-size internal buffer fills up). * Otherwise, no thread is created an all negotiation and option * handling is deferred until a read() is performed on the * {@link #getInputStream input stream}. *

* *

* The reader thread must be enabled for {@link TelnetInputListener} * support. *

* *

* When this method is invoked, the reader thread status will apply to all * subsequent connections; the current connection (if any) is not affected. *

* * @param flag true to enable the reader thread, false to disable * @see #registerInputListener ***/ public void setReaderThread(boolean flag) { readerThread = flag; } /*** * Gets the status of the reader thread. * * @return true if the reader thread is enabled, false otherwise ***/ public boolean getReaderThread() { return (readerThread); } /*** * Register a listener to be notified when new incoming data is * available to be read on the {@link #getInputStream input stream}. * Only one listener is supported at a time. * *

* More precisely, notifications are issued whenever the number of * bytes available for immediate reading (i.e., the value returned * by {@link InputStream#available}) transitions from zero to non-zero. * Note that (in general) multiple reads may be required to empty the * buffer and reset this notification, because incoming bytes are being * added to the internal buffer asynchronously. *

* *

* Notifications are only supported when a {@link #setReaderThread * reader thread} is enabled for the connection. *

* * @param listener listener to be registered; replaces any previous * @since 3.0 ***/ public synchronized void registerInputListener(TelnetInputListener listener) { this.inputListener = listener; } /*** * Unregisters the current {@link TelnetInputListener}, if any. * * @since 3.0 ***/ public synchronized void unregisterInputListener() { this.inputListener = null; } // Notify input listener void notifyInputListener() { TelnetInputListener listener; synchronized (this) { listener = this.inputListener; } if (listener != null) { listener.telnetInputAvailable(); } } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetCommand.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /** * The TelnetCommand class cannot be instantiated and only serves as a * storehouse for telnet command constants. * @see org.apache.commons.net.telnet.Telnet * @see org.apache.commons.net.telnet.TelnetClient */ public final class TelnetCommand { /*** The maximum value a command code can have. This value is 255. ***/ public static final int MAX_COMMAND_VALUE = 255; /*** Interpret As Command code. Value is 255 according to RFC 854. ***/ public static final int IAC = 255; /*** Don't use option code. Value is 254 according to RFC 854. ***/ public static final int DONT = 254; /*** Request to use option code. Value is 253 according to RFC 854. ***/ public static final int DO = 253; /*** Refuse to use option code. Value is 252 according to RFC 854. ***/ public static final int WONT = 252; /*** Agree to use option code. Value is 251 according to RFC 854. ***/ public static final int WILL = 251; /*** Start subnegotiation code. Value is 250 according to RFC 854. ***/ public static final int SB = 250; /*** Go Ahead code. Value is 249 according to RFC 854. ***/ public static final int GA = 249; /*** Erase Line code. Value is 248 according to RFC 854. ***/ public static final int EL = 248; /*** Erase Character code. Value is 247 according to RFC 854. ***/ public static final int EC = 247; /*** Are You There code. Value is 246 according to RFC 854. ***/ public static final int AYT = 246; /*** Abort Output code. Value is 245 according to RFC 854. ***/ public static final int AO = 245; /*** Interrupt Process code. Value is 244 according to RFC 854. ***/ public static final int IP = 244; /*** Break code. Value is 243 according to RFC 854. ***/ public static final int BREAK = 243; /*** Data mark code. Value is 242 according to RFC 854. ***/ public static final int DM = 242; /*** No Operation code. Value is 241 according to RFC 854. ***/ public static final int NOP = 241; /*** End subnegotiation code. Value is 240 according to RFC 854. ***/ public static final int SE = 240; /*** End of record code. Value is 239. ***/ public static final int EOR = 239; /*** Abort code. Value is 238. ***/ public static final int ABORT = 238; /*** Suspend process code. Value is 237. ***/ public static final int SUSP = 237; /*** End of file code. Value is 236. ***/ public static final int EOF = 236; /*** Synchronize code. Value is 242. ***/ public static final int SYNCH = 242; /*** String representations of commands. ***/ private static final String __commandString[] = { "IAC", "DONT", "DO", "WONT", "WILL", "SB", "GA", "EL", "EC", "AYT", "AO", "IP", "BRK", "DMARK", "NOP", "SE", "EOR", "ABORT", "SUSP", "EOF" }; private static final int __FIRST_COMMAND = IAC; private static final int __LAST_COMMAND = EOF; /*** * Returns the string representation of the telnet protocol command * corresponding to the given command code. *

* @param code The command code of the telnet protocol command. * @return The string representation of the telnet protocol command. ***/ public static final String getCommand(int code) { return __commandString[__FIRST_COMMAND - code]; } /*** * Determines if a given command code is valid. Returns true if valid, * false if not. *

* @param code The command code to test. * @return True if the command code is valid, false if not. **/ public static final boolean isValidCommand(int code) { return (code <= __FIRST_COMMAND && code >= __LAST_COMMAND); } // Cannot be instantiated private TelnetCommand() { } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetInputListener.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * Listener interface used for notification that incoming data is * available to be read. * * @see TelnetClient * @since 3.0 ***/ public interface TelnetInputListener { /*** * Callback method invoked when new incoming data is available on a * {@link TelnetClient}'s {@link TelnetClient#getInputStream input stream}. * * @see TelnetClient#registerInputListener ***/ public void telnetInputAvailable(); } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetInputStream.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InterruptedIOException; final class TelnetInputStream extends BufferedInputStream implements Runnable { /** End of file has been reached */ private static final int EOF = -1; /** Read would block */ private static final int WOULD_BLOCK = -2; // TODO should these be private enums? static final int _STATE_DATA = 0, _STATE_IAC = 1, _STATE_WILL = 2, _STATE_WONT = 3, _STATE_DO = 4, _STATE_DONT = 5, _STATE_SB = 6, _STATE_SE = 7, _STATE_CR = 8, _STATE_IAC_SB = 9; private boolean __hasReachedEOF; // @GuardedBy("__queue") private volatile boolean __isClosed; private boolean __readIsWaiting; private int __receiveState, __queueHead, __queueTail, __bytesAvailable; private final int[] __queue; private final TelnetClient __client; private final Thread __thread; private IOException __ioException; /* TERMINAL-TYPE option (start)*/ private final int __suboption[] = new int[512]; private int __suboption_count = 0; /* TERMINAL-TYPE option (end)*/ private volatile boolean __threaded; TelnetInputStream(InputStream input, TelnetClient client, boolean readerThread) { super(input); __client = client; __receiveState = _STATE_DATA; __isClosed = true; __hasReachedEOF = false; // Make it 2049, because when full, one slot will go unused, and we // want a 2048 byte buffer just to have a round number (base 2 that is) __queue = new int[2049]; __queueHead = 0; __queueTail = 0; __bytesAvailable = 0; __ioException = null; __readIsWaiting = false; __threaded = false; if(readerThread) { __thread = new Thread(this); } else { __thread = null; } } TelnetInputStream(InputStream input, TelnetClient client) { this(input, client, true); } void _start() { if(__thread == null) { return; } int priority; __isClosed = false; // TODO remove this // Need to set a higher priority in case JVM does not use pre-emptive // threads. This should prevent scheduler induced deadlock (rather than // deadlock caused by a bug in this code). priority = Thread.currentThread().getPriority() + 1; if (priority > Thread.MAX_PRIORITY) { priority = Thread.MAX_PRIORITY; } __thread.setPriority(priority); __thread.setDaemon(true); __thread.start(); __threaded = true; // tell _processChar that we are running threaded } // synchronized(__client) critical sections are to protect against // TelnetOutputStream writing through the telnet client at same time // as a processDo/Will/etc. command invoked from TelnetInputStream // tries to write. /** * Get the next byte of data. * IAC commands are processed internally and do not return data. * * @param mayBlock true if method is allowed to block * @return the next byte of data, * or -1 (EOF) if end of stread reached, * or -2 (WOULD_BLOCK) if mayBlock is false and there is no data available */ private int __read(boolean mayBlock) throws IOException { int ch; while (true) { // If there is no more data AND we were told not to block, // just return WOULD_BLOCK (-2). (More efficient than exception.) if(!mayBlock && super.available() == 0) { return WOULD_BLOCK; } // Otherwise, exit only when we reach end of stream. if ((ch = super.read()) < 0) { return EOF; } ch = (ch & 0xff); /* Code Section added for supporting AYT (start)*/ synchronized (__client) { __client._processAYTResponse(); } /* Code Section added for supporting AYT (end)*/ /* Code Section added for supporting spystreams (start)*/ __client._spyRead(ch); /* Code Section added for supporting spystreams (end)*/ switch (__receiveState) { case _STATE_CR: if (ch == '\0') { // Strip null continue; } // How do we handle newline after cr? // else if (ch == '\n' && _requestedDont(TelnetOption.ECHO) && // Handle as normal data by falling through to _STATE_DATA case //$FALL-THROUGH$ case _STATE_DATA: if (ch == TelnetCommand.IAC) { __receiveState = _STATE_IAC; continue; } if (ch == '\r') { synchronized (__client) { if (__client._requestedDont(TelnetOption.BINARY)) { __receiveState = _STATE_CR; } else { __receiveState = _STATE_DATA; } } } else { __receiveState = _STATE_DATA; } break; case _STATE_IAC: switch (ch) { case TelnetCommand.WILL: __receiveState = _STATE_WILL; continue; case TelnetCommand.WONT: __receiveState = _STATE_WONT; continue; case TelnetCommand.DO: __receiveState = _STATE_DO; continue; case TelnetCommand.DONT: __receiveState = _STATE_DONT; continue; /* TERMINAL-TYPE option (start)*/ case TelnetCommand.SB: __suboption_count = 0; __receiveState = _STATE_SB; continue; /* TERMINAL-TYPE option (end)*/ case TelnetCommand.IAC: __receiveState = _STATE_DATA; break; // exit to enclosing switch to return IAC from read case TelnetCommand.SE: // unexpected byte! ignore it (don't send it as a command) __receiveState = _STATE_DATA; continue; default: __receiveState = _STATE_DATA; __client._processCommand(ch); // Notify the user continue; // move on the next char } break; // exit and return from read case _STATE_WILL: synchronized (__client) { __client._processWill(ch); __client._flushOutputStream(); } __receiveState = _STATE_DATA; continue; case _STATE_WONT: synchronized (__client) { __client._processWont(ch); __client._flushOutputStream(); } __receiveState = _STATE_DATA; continue; case _STATE_DO: synchronized (__client) { __client._processDo(ch); __client._flushOutputStream(); } __receiveState = _STATE_DATA; continue; case _STATE_DONT: synchronized (__client) { __client._processDont(ch); __client._flushOutputStream(); } __receiveState = _STATE_DATA; continue; /* TERMINAL-TYPE option (start)*/ case _STATE_SB: switch (ch) { case TelnetCommand.IAC: __receiveState = _STATE_IAC_SB; continue; default: // store suboption char if (__suboption_count < __suboption.length) { __suboption[__suboption_count++] = ch; } break; } __receiveState = _STATE_SB; continue; case _STATE_IAC_SB: // IAC received during SB phase switch (ch) { case TelnetCommand.SE: synchronized (__client) { __client._processSuboption(__suboption, __suboption_count); __client._flushOutputStream(); } __receiveState = _STATE_DATA; continue; case TelnetCommand.IAC: // De-dup the duplicated IAC if (__suboption_count < __suboption.length) { __suboption[__suboption_count++] = ch; } break; default: // unexpected byte! ignore it break; } __receiveState = _STATE_SB; continue; /* TERMINAL-TYPE option (end)*/ } break; } return ch; } // synchronized(__client) critical sections are to protect against // TelnetOutputStream writing through the telnet client at same time // as a processDo/Will/etc. command invoked from TelnetInputStream // tries to write. Returns true if buffer was previously empty. private boolean __processChar(int ch) throws InterruptedException { // Critical section because we're altering __bytesAvailable, // __queueTail, and the contents of _queue. boolean bufferWasEmpty; synchronized (__queue) { bufferWasEmpty = (__bytesAvailable == 0); while (__bytesAvailable >= __queue.length - 1) { // The queue is full. We need to wait before adding any more data to it. Hopefully the stream owner // will consume some data soon! if(__threaded) { __queue.notify(); try { __queue.wait(); } catch (InterruptedException e) { throw e; } } else { // We've been asked to add another character to the queue, but it is already full and there's // no other thread to drain it. This should not have happened! throw new IllegalStateException("Queue is full! Cannot process another character."); } } // Need to do this in case we're not full, but block on a read if (__readIsWaiting && __threaded) { __queue.notify(); } __queue[__queueTail] = ch; ++__bytesAvailable; if (++__queueTail >= __queue.length) { __queueTail = 0; } } return bufferWasEmpty; } @Override public int read() throws IOException { // Critical section because we're altering __bytesAvailable, // __queueHead, and the contents of _queue in addition to // testing value of __hasReachedEOF. synchronized (__queue) { while (true) { if (__ioException != null) { IOException e; e = __ioException; __ioException = null; throw e; } if (__bytesAvailable == 0) { // Return EOF if at end of file if (__hasReachedEOF) { return EOF; } // Otherwise, we have to wait for queue to get something if(__threaded) { __queue.notify(); try { __readIsWaiting = true; __queue.wait(); __readIsWaiting = false; } catch (InterruptedException e) { throw new InterruptedIOException("Fatal thread interruption during read."); } } else { //__alreadyread = false; __readIsWaiting = true; int ch; boolean mayBlock = true; // block on the first read only do { try { if ((ch = __read(mayBlock)) < 0) { // must be EOF if(ch != WOULD_BLOCK) { return (ch); } } } catch (InterruptedIOException e) { synchronized (__queue) { __ioException = e; __queue.notifyAll(); try { __queue.wait(100); } catch (InterruptedException interrupted) { // Ignored } } return EOF; } try { if(ch != WOULD_BLOCK) { __processChar(ch); } } catch (InterruptedException e) { if (__isClosed) { return EOF; } } // Reads should not block on subsequent iterations. Potentially, this could happen if the // remaining buffered socket data consists entirely of Telnet command sequence and no "user" data. mayBlock = false; } // Continue reading as long as there is data available and the queue is not full. while (super.available() > 0 && __bytesAvailable < __queue.length - 1); __readIsWaiting = false; } continue; } else { int ch; ch = __queue[__queueHead]; if (++__queueHead >= __queue.length) { __queueHead = 0; } --__bytesAvailable; // Need to explicitly notify() so available() works properly if(__bytesAvailable == 0 && __threaded) { __queue.notify(); } return ch; } } } } /*** * Reads the next number of bytes from the stream into an array and * returns the number of bytes read. Returns -1 if the end of the * stream has been reached. *

* @param buffer The byte array in which to store the data. * @return The number of bytes read. Returns -1 if the * end of the message has been reached. * @exception IOException If an error occurs in reading the underlying * stream. ***/ @Override public int read(byte buffer[]) throws IOException { return read(buffer, 0, buffer.length); } /*** * Reads the next number of bytes from the stream into an array and returns * the number of bytes read. Returns -1 if the end of the * message has been reached. The characters are stored in the array * starting from the given offset and up to the length specified. *

* @param buffer The byte array in which to store the data. * @param offset The offset into the array at which to start storing data. * @param length The number of bytes to read. * @return The number of bytes read. Returns -1 if the * end of the stream has been reached. * @exception IOException If an error occurs while reading the underlying * stream. ***/ @Override public int read(byte buffer[], int offset, int length) throws IOException { int ch, off; if (length < 1) { return 0; } // Critical section because run() may change __bytesAvailable synchronized (__queue) { if (length > __bytesAvailable) { length = __bytesAvailable; } } if ((ch = read()) == EOF) { return EOF; } off = offset; do { buffer[offset++] = (byte)ch; } while (--length > 0 && (ch = read()) != EOF); //__client._spyRead(buffer, off, offset - off); return (offset - off); } /*** Returns false. Mark is not supported. ***/ @Override public boolean markSupported() { return false; } @Override public int available() throws IOException { // Critical section because run() may change __bytesAvailable synchronized (__queue) { if (__threaded) { // Must not call super.available when running threaded: NET-466 return __bytesAvailable; } else { return __bytesAvailable + super.available(); } } } // Cannot be synchronized. Will cause deadlock if run() is blocked // in read because BufferedInputStream read() is synchronized. @Override public void close() throws IOException { // Completely disregard the fact thread may still be running. // We can't afford to block on this close by waiting for // thread to terminate because few if any JVM's will actually // interrupt a system read() from the interrupt() method. super.close(); synchronized (__queue) { __hasReachedEOF = true; __isClosed = true; if (__thread != null && __thread.isAlive()) { __thread.interrupt(); } __queue.notifyAll(); } } @Override public void run() { int ch; try { _outerLoop: while (!__isClosed) { try { if ((ch = __read(true)) < 0) { break; } } catch (InterruptedIOException e) { synchronized (__queue) { __ioException = e; __queue.notifyAll(); try { __queue.wait(100); } catch (InterruptedException interrupted) { if (__isClosed) { break _outerLoop; } } continue; } } catch(RuntimeException re) { // We treat any runtime exceptions as though the // stream has been closed. We close the // underlying stream just to be sure. super.close(); // Breaking the loop has the effect of setting // the state to closed at the end of the method. break _outerLoop; } // Process new character boolean notify = false; try { notify = __processChar(ch); } catch (InterruptedException e) { if (__isClosed) { break _outerLoop; } } // Notify input listener if buffer was previously empty if (notify) { __client.notifyInputListener(); } } } catch (IOException ioe) { synchronized (__queue) { __ioException = ioe; } __client.notifyInputListener(); } synchronized (__queue) { __isClosed = true; // Possibly redundant __hasReachedEOF = true; __queue.notify(); } __threaded = false; } } /* Emacs configuration * Local variables: ** * mode: java ** * c-basic-offset: 4 ** * indent-tabs-mode: nil ** * End: ** */ ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetNotificationHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * The TelnetNotificationHandler interface can be used to handle * notification of options negotiation commands received on a telnet * session. *

* The user can implement this interface and register a * TelnetNotificationHandler by using the registerNotificationHandler() * of TelnetClient to be notified of option negotiation commands. ***/ public interface TelnetNotificationHandler { /*** * The remote party sent a DO command. ***/ public static final int RECEIVED_DO = 1; /*** * The remote party sent a DONT command. ***/ public static final int RECEIVED_DONT = 2; /*** * The remote party sent a WILL command. ***/ public static final int RECEIVED_WILL = 3; /*** * The remote party sent a WONT command. ***/ public static final int RECEIVED_WONT = 4; /*** * The remote party sent a COMMAND. * @since 2.2 ***/ public static final int RECEIVED_COMMAND = 5; /*** * Callback method called when TelnetClient receives an * command or option negotiation command * * @param negotiation_code - type of (negotiation) command received * (RECEIVED_DO, RECEIVED_DONT, RECEIVED_WILL, RECEIVED_WONT, RECEIVED_COMMAND) * * @param option_code - code of the option negotiated, or the command code itself (e.g. NOP). ***/ public void receivedNegotiation(int negotiation_code, int option_code); } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetOption.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * The TelnetOption class cannot be instantiated and only serves as a * storehouse for telnet option constants. *

* Details regarding Telnet option specification can be found in RFC 855. * * * @see org.apache.commons.net.telnet.Telnet * @see org.apache.commons.net.telnet.TelnetClient ***/ public class TelnetOption { /*** The maximum value an option code can have. This value is 255. ***/ public static final int MAX_OPTION_VALUE = 255; public static final int BINARY = 0; public static final int ECHO = 1; public static final int PREPARE_TO_RECONNECT = 2; public static final int SUPPRESS_GO_AHEAD = 3; public static final int APPROXIMATE_MESSAGE_SIZE = 4; public static final int STATUS = 5; public static final int TIMING_MARK = 6; public static final int REMOTE_CONTROLLED_TRANSMISSION = 7; public static final int NEGOTIATE_OUTPUT_LINE_WIDTH = 8; public static final int NEGOTIATE_OUTPUT_PAGE_SIZE = 9; public static final int NEGOTIATE_CARRIAGE_RETURN = 10; public static final int NEGOTIATE_HORIZONTAL_TAB_STOP = 11; public static final int NEGOTIATE_HORIZONTAL_TAB = 12; public static final int NEGOTIATE_FORMFEED = 13; public static final int NEGOTIATE_VERTICAL_TAB_STOP = 14; public static final int NEGOTIATE_VERTICAL_TAB = 15; public static final int NEGOTIATE_LINEFEED = 16; public static final int EXTENDED_ASCII = 17; public static final int FORCE_LOGOUT = 18; public static final int BYTE_MACRO = 19; public static final int DATA_ENTRY_TERMINAL = 20; public static final int SUPDUP = 21; public static final int SUPDUP_OUTPUT = 22; public static final int SEND_LOCATION = 23; public static final int TERMINAL_TYPE = 24; public static final int END_OF_RECORD = 25; public static final int TACACS_USER_IDENTIFICATION = 26; public static final int OUTPUT_MARKING = 27; public static final int TERMINAL_LOCATION_NUMBER = 28; public static final int REGIME_3270 = 29; public static final int X3_PAD = 30; public static final int WINDOW_SIZE = 31; public static final int TERMINAL_SPEED = 32; public static final int REMOTE_FLOW_CONTROL = 33; public static final int LINEMODE = 34; public static final int X_DISPLAY_LOCATION = 35; public static final int OLD_ENVIRONMENT_VARIABLES = 36; public static final int AUTHENTICATION = 37; public static final int ENCRYPTION = 38; public static final int NEW_ENVIRONMENT_VARIABLES = 39; public static final int EXTENDED_OPTIONS_LIST = 255; @SuppressWarnings("unused") private static final int __FIRST_OPTION = BINARY; private static final int __LAST_OPTION = EXTENDED_OPTIONS_LIST; private static final String __optionString[] = { "BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME", "STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP", "NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS", "NAOVTD", "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO", "DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT", "SEND LOCATION", "TERMINAL TYPE", "END OF RECORD", "TACACS UID", "OUTPUT MARKING", "TTYLOC", "3270 REGIME", "X.3 PAD", "NAWS", "TSPEED", "LFLOW", "LINEMODE", "XDISPLOC", "OLD-ENVIRON", "AUTHENTICATION", "ENCRYPT", "NEW-ENVIRON", "TN3270E", "XAUTH", "CHARSET", "RSP", "Com Port Control", "Suppress Local Echo", "Start TLS", "KERMIT", "SEND-URL", "FORWARD_X", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "TELOPT PRAGMA LOGON", "TELOPT SSPI LOGON", "TELOPT PRAGMA HEARTBEAT", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "Extended-Options-List" }; /*** * Returns the string representation of the telnet protocol option * corresponding to the given option code. * * @param code The option code of the telnet protocol option * @return The string representation of the telnet protocol option. ***/ public static final String getOption(int code) { if(__optionString[code].length() == 0) { return "UNASSIGNED"; } else { return __optionString[code]; } } /*** * Determines if a given option code is valid. Returns true if valid, * false if not. * * @param code The option code to test. * @return True if the option code is valid, false if not. **/ public static final boolean isValidOption(int code) { return (code <= __LAST_OPTION); } // Cannot be instantiated private TelnetOption() { } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetOptionHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * The TelnetOptionHandler class is the base class to be used * for implementing handlers for telnet options. *

* TelnetOptionHandler implements basic option handling * functionality and defines abstract methods that must be * implemented to define subnegotiation behaviour. ***/ public abstract class TelnetOptionHandler { /*** * Option code ***/ private int optionCode = -1; /*** * true if the option should be activated on the local side ***/ private boolean initialLocal = false; /*** * true if the option should be activated on the remote side ***/ private boolean initialRemote = false; /*** * true if the option should be accepted on the local side ***/ private boolean acceptLocal = false; /*** * true if the option should be accepted on the remote side ***/ private boolean acceptRemote = false; /*** * true if the option is active on the local side ***/ private boolean doFlag = false; /*** * true if the option is active on the remote side ***/ private boolean willFlag = false; /*** * Constructor for the TelnetOptionHandler. Allows defining desired * initial setting for local/remote activation of this option and * behaviour in case a local/remote activation request for this * option is received. *

* @param optcode - Option code. * @param initlocal - if set to true, a WILL is sent upon connection. * @param initremote - if set to true, a DO is sent upon connection. * @param acceptlocal - if set to true, any DO request is accepted. * @param acceptremote - if set to true, any WILL request is accepted. ***/ public TelnetOptionHandler(int optcode, boolean initlocal, boolean initremote, boolean acceptlocal, boolean acceptremote) { optionCode = optcode; initialLocal = initlocal; initialRemote = initremote; acceptLocal = acceptlocal; acceptRemote = acceptremote; } /*** * Returns the option code for this option. *

* @return Option code. ***/ public int getOptionCode() { return (optionCode); } /*** * Returns a boolean indicating whether to accept a DO * request coming from the other end. *

* @return true if a DO request shall be accepted. ***/ public boolean getAcceptLocal() { return (acceptLocal); } /*** * Returns a boolean indicating whether to accept a WILL * request coming from the other end. *

* @return true if a WILL request shall be accepted. ***/ public boolean getAcceptRemote() { return (acceptRemote); } /*** * Set behaviour of the option for DO requests coming from * the other end. *

* @param accept - if true, subsequent DO requests will be accepted. ***/ public void setAcceptLocal(boolean accept) { acceptLocal = accept; } /*** * Set behaviour of the option for WILL requests coming from * the other end. *

* @param accept - if true, subsequent WILL requests will be accepted. ***/ public void setAcceptRemote(boolean accept) { acceptRemote = accept; } /*** * Returns a boolean indicating whether to send a WILL request * to the other end upon connection. *

* @return true if a WILL request shall be sent upon connection. ***/ public boolean getInitLocal() { return (initialLocal); } /*** * Returns a boolean indicating whether to send a DO request * to the other end upon connection. *

* @return true if a DO request shall be sent upon connection. ***/ public boolean getInitRemote() { return (initialRemote); } /*** * Tells this option whether to send a WILL request upon connection. *

* @param init - if true, a WILL request will be sent upon subsequent * connections. ***/ public void setInitLocal(boolean init) { initialLocal = init; } /*** * Tells this option whether to send a DO request upon connection. *

* @param init - if true, a DO request will be sent upon subsequent * connections. ***/ public void setInitRemote(boolean init) { initialRemote = init; } /*** * Method called upon reception of a subnegotiation for this option * coming from the other end. *

* This implementation returns null, and * must be overridden by the actual TelnetOptionHandler to specify * which response must be sent for the subnegotiation request. *

* @param suboptionData - the sequence received, without IAC SB & IAC SE * @param suboptionLength - the length of data in suboption_data *

* @return response to be sent to the subnegotiation sequence. TelnetClient * will add IAC SB & IAC SE. null means no response ***/ public int[] answerSubnegotiation(int suboptionData[], int suboptionLength) { return null; } /*** * This method is invoked whenever this option is acknowledged active on * the local end (TelnetClient sent a WILL, remote side sent a DO). * The method is used to specify a subnegotiation sequence that will be * sent by TelnetClient when the option is activated. *

* This implementation returns null, and must be overridden by * the actual TelnetOptionHandler to specify * which response must be sent for the subnegotiation request. * @return subnegotiation sequence to be sent by TelnetClient. TelnetClient * will add IAC SB & IAC SE. null means no subnegotiation. ***/ public int[] startSubnegotiationLocal() { return null; } /*** * This method is invoked whenever this option is acknowledged active on * the remote end (TelnetClient sent a DO, remote side sent a WILL). * The method is used to specify a subnegotiation sequence that will be * sent by TelnetClient when the option is activated. *

* This implementation returns null, and must be overridden by * the actual TelnetOptionHandler to specify * which response must be sent for the subnegotiation request. * @return subnegotiation sequence to be sent by TelnetClient. TelnetClient * will add IAC SB & IAC SE. null means no subnegotiation. ***/ public int[] startSubnegotiationRemote() { return null; } /*** * Returns a boolean indicating whether a WILL request sent to the other * side has been acknowledged. *

* @return true if a WILL sent to the other side has been acknowledged. ***/ boolean getWill() { return willFlag; } /*** * Tells this option whether a WILL request sent to the other * side has been acknowledged (invoked by TelnetClient). *

* @param state - if true, a WILL request has been acknowledged. ***/ void setWill(boolean state) { willFlag = state; } /*** * Returns a boolean indicating whether a DO request sent to the other * side has been acknowledged. *

* @return true if a DO sent to the other side has been acknowledged. ***/ boolean getDo() { return doFlag; } /*** * Tells this option whether a DO request sent to the other * side has been acknowledged (invoked by TelnetClient). *

* @param state - if true, a DO request has been acknowledged. ***/ void setDo(boolean state) { doFlag = state; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TelnetOutputStream.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; import java.io.IOException; import java.io.OutputStream; /** * Wraps an output stream. *

* In binary mode, the only conversion is to double IAC. *

* In ASCII mode, if convertCRtoCRLF is true (currently always true), any CR is converted to CRLF. * IACs are doubled. * Also a bare LF is converted to CRLF and a bare CR is converted to CR\0 *

***/ final class TelnetOutputStream extends OutputStream { private final TelnetClient __client; // TODO there does not appear to be any way to change this value - should it be a ctor parameter? private final boolean __convertCRtoCRLF = true; private boolean __lastWasCR = false; TelnetOutputStream(TelnetClient client) { __client = client; } /*** * Writes a byte to the stream. *

* @param ch The byte to write. * @exception IOException If an error occurs while writing to the underlying * stream. ***/ @Override public void write(int ch) throws IOException { synchronized (__client) { ch &= 0xff; if (__client._requestedWont(TelnetOption.BINARY)) // i.e. ASCII { if (__lastWasCR) { if (__convertCRtoCRLF) { __client._sendByte('\n'); if (ch == '\n') // i.e. was CRLF anyway { __lastWasCR = false; return ; } } // __convertCRtoCRLF else if (ch != '\n') { __client._sendByte('\0'); // RFC854 requires CR NUL for bare CR } } switch (ch) { case '\r': __client._sendByte('\r'); __lastWasCR = true; break; case '\n': if (!__lastWasCR) { // convert LF to CRLF __client._sendByte('\r'); } __client._sendByte(ch); __lastWasCR = false; break; case TelnetCommand.IAC: __client._sendByte(TelnetCommand.IAC); __client._sendByte(TelnetCommand.IAC); __lastWasCR = false; break; default: __client._sendByte(ch); __lastWasCR = false; break; } } // end ASCII else if (ch == TelnetCommand.IAC) { __client._sendByte(ch); __client._sendByte(TelnetCommand.IAC); } else { __client._sendByte(ch); } } } /*** * Writes a byte array to the stream. *

* @param buffer The byte array to write. * @exception IOException If an error occurs while writing to the underlying * stream. ***/ @Override public void write(byte buffer[]) throws IOException { write(buffer, 0, buffer.length); } /*** * Writes a number of bytes from a byte array to the stream starting from * a given offset. *

* @param buffer The byte array to write. * @param offset The offset into the array at which to start copying data. * @param length The number of bytes to write. * @exception IOException If an error occurs while writing to the underlying * stream. ***/ @Override public void write(byte buffer[], int offset, int length) throws IOException { synchronized (__client) { while (length-- > 0) { write(buffer[offset++]); } } } /*** Flushes the stream. ***/ @Override public void flush() throws IOException { __client._flushOutputStream(); } /*** Closes the stream. ***/ @Override public void close() throws IOException { __client._closeOutputStream(); } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/TerminalTypeOptionHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * Implements the telnet terminal type option RFC 1091. ***/ public class TerminalTypeOptionHandler extends TelnetOptionHandler { /*** * Terminal type ***/ private final String termType; /*** * Terminal type option ***/ protected static final int TERMINAL_TYPE = 24; /*** * Send (for subnegotiation) ***/ protected static final int TERMINAL_TYPE_SEND = 1; /*** * Is (for subnegotiation) ***/ protected static final int TERMINAL_TYPE_IS = 0; /*** * Constructor for the TerminalTypeOptionHandler. Allows defining desired * initial setting for local/remote activation of this option and * behaviour in case a local/remote activation request for this * option is received. *

* @param termtype - terminal type that will be negotiated. * @param initlocal - if set to true, a WILL is sent upon connection. * @param initremote - if set to true, a DO is sent upon connection. * @param acceptlocal - if set to true, any DO request is accepted. * @param acceptremote - if set to true, any WILL request is accepted. ***/ public TerminalTypeOptionHandler(String termtype, boolean initlocal, boolean initremote, boolean acceptlocal, boolean acceptremote) { super(TelnetOption.TERMINAL_TYPE, initlocal, initremote, acceptlocal, acceptremote); termType = termtype; } /*** * Constructor for the TerminalTypeOptionHandler. Initial and accept * behaviour flags are set to false *

* @param termtype - terminal type that will be negotiated. ***/ public TerminalTypeOptionHandler(String termtype) { super(TelnetOption.TERMINAL_TYPE, false, false, false, false); termType = termtype; } /*** * Implements the abstract method of TelnetOptionHandler. *

* @param suboptionData - the sequence received, without IAC SB & IAC SE * @param suboptionLength - the length of data in suboption_data *

* @return terminal type information ***/ @Override public int[] answerSubnegotiation(int suboptionData[], int suboptionLength) { if ((suboptionData != null) && (suboptionLength > 1) && (termType != null)) { if ((suboptionData[0] == TERMINAL_TYPE) && (suboptionData[1] == TERMINAL_TYPE_SEND)) { int response[] = new int[termType.length() + 2]; response[0] = TERMINAL_TYPE; response[1] = TERMINAL_TYPE_IS; for (int ii = 0; ii < termType.length(); ii++) { response[ii + 2] = termType.charAt(ii); } return response; } } return null; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/telnet/WindowSizeOptionHandler.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /*** * Implements the telnet window size option RFC 1073. * @version $Id: WindowSizeOptionHandler.java 1697293 2015-08-24 01:01:00Z sebb $ * @since 2.0 ***/ public class WindowSizeOptionHandler extends TelnetOptionHandler { /*** * Horizontal Size ***/ private int m_nWidth = 80; /*** * Vertical Size ***/ private int m_nHeight = 24; /*** * Window size option ***/ protected static final int WINDOW_SIZE = 31; /*** * Constructor for the WindowSizeOptionHandler. Allows defining desired * initial setting for local/remote activation of this option and * behaviour in case a local/remote activation request for this * option is received. *

* @param nWidth - Window width. * @param nHeight - Window Height * @param initlocal - if set to true, a WILL is sent upon connection. * @param initremote - if set to true, a DO is sent upon connection. * @param acceptlocal - if set to true, any DO request is accepted. * @param acceptremote - if set to true, any WILL request is accepted. ***/ public WindowSizeOptionHandler( int nWidth, int nHeight, boolean initlocal, boolean initremote, boolean acceptlocal, boolean acceptremote ) { super ( TelnetOption.WINDOW_SIZE, initlocal, initremote, acceptlocal, acceptremote ); m_nWidth = nWidth; m_nHeight = nHeight; } /*** * Constructor for the WindowSizeOptionHandler. Initial and accept * behaviour flags are set to false *

* @param nWidth - Window width. * @param nHeight - Window Height ***/ public WindowSizeOptionHandler( int nWidth, int nHeight ) { super ( TelnetOption.WINDOW_SIZE, false, false, false, false ); m_nWidth = nWidth; m_nHeight = nHeight; } /*** * Implements the abstract method of TelnetOptionHandler. * This will send the client Height and Width to the server. *

* @return array to send to remote system ***/ @Override public int[] startSubnegotiationLocal() { int nCompoundWindowSize = m_nWidth * 0x10000 + m_nHeight; int nResponseSize = 5; int nIndex; int nShift; int nTurnedOnBits; if ((m_nWidth % 0x100) == 0xFF) { nResponseSize += 1; } if ((m_nWidth / 0x100) == 0xFF) { nResponseSize += 1; } if ((m_nHeight % 0x100) == 0xFF) { nResponseSize += 1; } if ((m_nHeight / 0x100) == 0xFF) { nResponseSize += 1; } // // allocate response array // int response[] = new int[nResponseSize]; // // Build response array. // --------------------- // 1. put option name. // 2. loop through Window size and fill the values, // 3. duplicate 'ff' if needed. // response[0] = WINDOW_SIZE; // 1 // for ( // 2 // nIndex=1, nShift = 24; nIndex < nResponseSize; nIndex++, nShift -=8 ) { nTurnedOnBits = 0xFF; nTurnedOnBits <<= nShift; response[nIndex] = (nCompoundWindowSize & nTurnedOnBits) >>> nShift; if (response[nIndex] == 0xff) { // 3 // nIndex++; response[nIndex] = 0xff; } } return response; } } ================================================ FILE: client/src/main/java/org/apache/commons/net/util/ListenerList.java ================================================ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.util; import java.io.Serializable; import java.util.EventListener; import java.util.Iterator; import java.util.concurrent.CopyOnWriteArrayList; /** */ public class ListenerList implements Serializable, Iterable { private static final long serialVersionUID = -1934227607974228213L; private final CopyOnWriteArrayList __listeners; public ListenerList() { __listeners = new CopyOnWriteArrayList(); } public void addListener(EventListener listener) { __listeners.add(listener); } public void removeListener(EventListener listener) { __listeners.remove(listener); } public int getListenerCount() { return __listeners.size(); } /** * Return an {@link Iterator} for the {@link EventListener} instances. * * @return an {@link Iterator} for the {@link EventListener} instances * @since 2.0 * TODO Check that this is a good defensive strategy */ @Override public Iterator iterator() { return __listeners.iterator(); } } ================================================ FILE: common/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-common arthas-common https://github.com/alibaba/arthas arthas-common ================================================ FILE: common/src/main/java/com/taobao/arthas/common/AnsiLog.java ================================================ package com.taobao.arthas.common; import java.io.PrintStream; import java.util.logging.Level; import java.util.regex.Matcher; /** * * 

 * FINEST  -> TRACE
 * FINER   -> DEBUG
 * FINE    -> DEBUG
 * CONFIG  -> INFO
 * INFO    -> INFO
 * WARNING -> WARN
 * SEVERE  -> ERROR
 *
* * @see org.slf4j.bridge.SLF4JBridgeHandler * @author hengyunabc 2017-05-03 * */ public abstract class AnsiLog { static boolean enableColor; /** * Output stream for log messages, defaults to System.out. */ private static volatile PrintStream out = System.out; public static java.util.logging.Level LEVEL = java.util.logging.Level.CONFIG; private static final String RESET = "\033[0m"; private static final int DEFAULT = 39; private static final int BLACK = 30; private static final int RED = 31; private static final int GREEN = 32; private static final int YELLOW = 33; private static final int BLUE = 34; private static final int MAGENTA = 35; private static final int CYAN = 36; private static final int WHITE = 37; private static final String TRACE_PREFIX = "[TRACE] "; private static final String TRACE_COLOR_PREFIX = "[" + colorStr("TRACE", GREEN) + "] "; private static final String DEBUG_PREFIX = "[DEBUG] "; private static final String DEBUG_COLOR_PREFIX = "[" + colorStr("DEBUG", GREEN) + "] "; private static final String INFO_PREFIX = "[INFO] "; private static final String INFO_COLOR_PREFIX = "[" + colorStr("INFO", GREEN) + "] "; private static final String WARN_PREFIX = "[WARN] "; private static final String WARN_COLOR_PREFIX = "[" + colorStr("WARN", YELLOW) + "] "; private static final String ERROR_PREFIX = "[ERROR] "; private static final String ERROR_COLOR_PREFIX = "[" + colorStr("ERROR", RED) + "] "; static { try { if (System.console() != null) { enableColor = true; // windows dos, do not support color if (OSUtils.isWindows()) { enableColor = false; } } // cygwin and mingw support color if (OSUtils.isCygwinOrMinGW()) { enableColor = true; } } catch (Throwable t) { // ignore } } private AnsiLog() { } public static boolean enableColor() { return enableColor; } /** * 设置日志输出流 * * @param printStream 输出流，传入 null 时使用 System.out * @return 之前的输出流 */ public static PrintStream out(PrintStream printStream) { PrintStream old = out; out = printStream == null ? System.out : printStream; return old; } /** * 获取当前日志输出流 * * @return 当前输出流 */ public static PrintStream out() { return out; } /** * set logger Level * * @see java.util.logging.Level * @param level * @return */ public static Level level(Level level) { Level old = LEVEL; LEVEL = level; return old; } /** * get current logger Level * * @return */ public static Level level() { return LEVEL; } public static String black(String msg) { if (enableColor) { return colorStr(msg, BLACK); } else { return msg; } } public static String red(String msg) { if (enableColor) { return colorStr(msg, RED); } else { return msg; } } public static String green(String msg) { if (enableColor) { return colorStr(msg, GREEN); } else { return msg; } } public static String yellow(String msg) { if (enableColor) { return colorStr(msg, YELLOW); } else { return msg; } } public static String blue(String msg) { if (enableColor) { return colorStr(msg, BLUE); } else { return msg; } } public static String magenta(String msg) { if (enableColor) { return colorStr(msg, MAGENTA); } else { return msg; } } public static String cyan(String msg) { if (enableColor) { return colorStr(msg, CYAN); } else { return msg; } } public static String white(String msg) { if (enableColor) { return colorStr(msg, WHITE); } else { return msg; } } private static String colorStr(String msg, int colorCode) { return "\033[" + colorCode + "m" + msg + RESET; } public static void trace(String msg) { if (canLog(Level.FINEST)) { if (enableColor) { out.println(TRACE_COLOR_PREFIX + msg); } else { out.println(TRACE_PREFIX + msg); } } } public static void trace(String format, Object... arguments) { if (canLog(Level.FINEST)) { trace(format(format, arguments)); } } public static void trace(Throwable t) { if (canLog(Level.FINEST)) { t.printStackTrace(out); } } public static void debug(String msg) { if (canLog(Level.FINER)) { if (enableColor) { out.println(DEBUG_COLOR_PREFIX + msg); } else { out.println(DEBUG_PREFIX + msg); } } } public static void debug(String format, Object... arguments) { if (canLog(Level.FINER)) { debug(format(format, arguments)); } } public static void debug(Throwable t) { if (canLog(Level.FINER)) { t.printStackTrace(out); } } public static void info(String msg) { if (canLog(Level.CONFIG)) { if (enableColor) { out.println(INFO_COLOR_PREFIX + msg); } else { out.println(INFO_PREFIX + msg); } } } public static void info(String format, Object... arguments) { if (canLog(Level.CONFIG)) { info(format(format, arguments)); } } public static void info(Throwable t) { if (canLog(Level.CONFIG)) { t.printStackTrace(out); } } public static void warn(String msg) { if (canLog(Level.WARNING)) { if (enableColor) { out.println(WARN_COLOR_PREFIX + msg); } else { out.println(WARN_PREFIX + msg); } } } public static void warn(String format, Object... arguments) { if (canLog(Level.WARNING)) { warn(format(format, arguments)); } } public static void warn(Throwable t) { if (canLog(Level.WARNING)) { t.printStackTrace(out); } } public static void error(String msg) { if (canLog(Level.SEVERE)) { if (enableColor) { out.println(ERROR_COLOR_PREFIX + msg); } else { out.println(ERROR_PREFIX + msg); } } } public static void error(String format, Object... arguments) { if (canLog(Level.SEVERE)) { error(format(format, arguments)); } } public static void error(Throwable t) { if (canLog(Level.SEVERE)) { t.printStackTrace(out); } } private static String format(String from, Object... arguments) { if (from != null) { String computed = from; if (arguments != null && arguments.length != 0) { for (Object argument : arguments) { computed = computed.replaceFirst("\\{\\}", Matcher.quoteReplacement(String.valueOf(argument))); } } return computed; } return null; } private static boolean canLog(Level level) { return level.intValue() >= LEVEL.intValue(); } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/ArthasConstants.java ================================================ package com.taobao.arthas.common; /** * * @author hengyunabc 2020-09-02 * */ public class ArthasConstants { /** * local address in VM communication * * @see io.netty.channel.local.LocalAddress * @see io.netty.channel.local.LocalChannel */ public static final String NETTY_LOCAL_ADDRESS = "arthas-netty-LocalAddress"; public static final int MAX_HTTP_CONTENT_LENGTH = 1024 * 1024 * 10; public static final String ARTHAS_OUTPUT = "arthas-output"; public static final String APP_NAME = "app-name"; public static final String PROJECT_NAME = "project.name"; public static final String SPRING_APPLICATION_NAME = "spring.application.name"; public static final int TELNET_PORT = 3658; public static final String DEFAULT_WEBSOCKET_PATH = "/ws"; public static final int WEBSOCKET_IDLE_SECONDS = 10; /** * HTTP cookie id */ public static final String ASESSION_KEY = "asession"; public static final String DEFAULT_USERNAME = "arthas"; public static final String SUBJECT_KEY = "subject"; public static final String AUTH = "auth"; public static final String USERNAME_KEY = "username"; public static final String PASSWORD_KEY = "password"; public static final String USER_ID_KEY = "userId"; } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/ExecutingCommand.java ================================================ package com.taobao.arthas.common; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Arrays; import java.util.List; /** * A class for executing on the command line and returning the result of * execution. * * @author alessandro[at]perucchi[dot]org */ public class ExecutingCommand { private ExecutingCommand() { } /** * Executes a command on the native command line and returns the result. * * @param cmdToRun * Command to run * @return A list of Strings representing the result of the command, or empty * string if the command failed */ public static List runNative(String cmdToRun) { String[] cmd = cmdToRun.split(" "); return runNative(cmd); } /** * Executes a command on the native command line and returns the result line by * line. * * @param cmdToRunWithArgs * Command to run and args, in an array * @return A list of Strings representing the result of the command, or empty * string if the command failed */ public static List runNative(String[] cmdToRunWithArgs) { Process p = null; try { p = Runtime.getRuntime().exec(cmdToRunWithArgs); } catch (SecurityException e) { AnsiLog.trace("Couldn't run command {}:", Arrays.toString(cmdToRunWithArgs)); AnsiLog.trace(e); return new ArrayList(0); } catch (IOException e) { AnsiLog.trace("Couldn't run command {}:", Arrays.toString(cmdToRunWithArgs)); AnsiLog.trace(e); return new ArrayList(0); } ArrayList sa = new ArrayList(); BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream())); try { String line; while ((line = reader.readLine()) != null) { sa.add(line); } p.waitFor(); } catch (IOException e) { AnsiLog.trace("Problem reading output from {}:", Arrays.toString(cmdToRunWithArgs)); AnsiLog.trace(e); return new ArrayList(0); } catch (InterruptedException ie) { AnsiLog.trace("Problem reading output from {}:", Arrays.toString(cmdToRunWithArgs)); AnsiLog.trace(ie); Thread.currentThread().interrupt(); } finally { IOUtils.close(reader); } return sa; } /** * Return first line of response for selected command. * * @param cmd2launch * String command to be launched * @return String or empty string if command failed */ public static String getFirstAnswer(String cmd2launch) { return getAnswerAt(cmd2launch, 0); } /** * Return response on selected line index (0-based) after running selected * command. * * @param cmd2launch * String command to be launched * @param answerIdx * int index of line in response of the command * @return String whole line in response or empty string if invalid index or * running of command fails */ public static String getAnswerAt(String cmd2launch, int answerIdx) { List sa = ExecutingCommand.runNative(cmd2launch); if (answerIdx >= 0 && answerIdx < sa.size()) { return sa.get(answerIdx); } return ""; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/FileUtils.java ================================================ package com.taobao.arthas.common; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; /** * * @see org.apache.commons.io.FileUtils * @author hengyunabc 2020-05-03 * */ public class FileUtils { public static File getTempDirectory() { return new File(System.getProperty("java.io.tmpdir")); } /** * Writes a byte array to a file creating the file if it does not exist. *

* NOTE: As from v1.3, the parent directories of the file will be created if * they do not exist. * * @param file the file to write to * @param data the content to write to the file * @throws IOException in case of an I/O error * @since 1.1 */ public static void writeByteArrayToFile(final File file, final byte[] data) throws IOException { writeByteArrayToFile(file, data, false); } /** * Writes a byte array to a file creating the file if it does not exist. * * @param file the file to write to * @param data the content to write to the file * @param append if {@code true}, then bytes will be added to the end of the * file rather than overwriting * @throws IOException in case of an I/O error * @since 2.1 */ public static void writeByteArrayToFile(final File file, final byte[] data, final boolean append) throws IOException { writeByteArrayToFile(file, data, 0, data.length, append); } /** * Writes {@code len} bytes from the specified byte array starting at offset * {@code off} to a file, creating the file if it does not exist. * * @param file the file to write to * @param data the content to write to the file * @param off the start offset in the data * @param len the number of bytes to write * @throws IOException in case of an I/O error * @since 2.5 */ public static void writeByteArrayToFile(final File file, final byte[] data, final int off, final int len) throws IOException { writeByteArrayToFile(file, data, off, len, false); } /** * Writes {@code len} bytes from the specified byte array starting at offset * {@code off} to a file, creating the file if it does not exist. * * @param file the file to write to * @param data the content to write to the file * @param off the start offset in the data * @param len the number of bytes to write * @param append if {@code true}, then bytes will be added to the end of the * file rather than overwriting * @throws IOException in case of an I/O error * @since 2.5 */ public static void writeByteArrayToFile(final File file, final byte[] data, final int off, final int len, final boolean append) throws IOException { FileOutputStream out = null; try { out = openOutputStream(file, append); out.write(data, off, len); } finally { IOUtils.close(out); } } /** * Opens a {@link FileOutputStream} for the specified file, checking and * creating the parent directory if it does not exist. *

* At the end of the method either the stream will be successfully opened, or an * exception will have been thrown. *

* The parent directory will be created if it does not exist. The file will be * created if it does not exist. An exception is thrown if the file object * exists but is a directory. An exception is thrown if the file exists but * cannot be written to. An exception is thrown if the parent directory cannot * be created. * * @param file the file to open for output, must not be {@code null} * @param append if {@code true}, then bytes will be added to the end of the * file rather than overwriting * @return a new {@link FileOutputStream} for the specified file * @throws IOException if the file object is a directory * @throws IOException if the file cannot be written to * @throws IOException if a parent directory needs creating but that fails * @since 2.1 */ public static FileOutputStream openOutputStream(final File file, final boolean append) throws IOException { if (file.exists()) { if (file.isDirectory()) { throw new IOException("File '" + file + "' exists but is a directory"); } if (!file.canWrite()) { throw new IOException("File '" + file + "' cannot be written to"); } } else { final File parent = file.getParentFile(); if (parent != null) { if (!parent.mkdirs() && !parent.isDirectory()) { throw new IOException("Directory '" + parent + "' could not be created"); } } } return new FileOutputStream(file, append); } /** * Reads the contents of a file into a byte array. * The file is always closed. * * @param file the file to read, must not be {@code null} * @return the file contents, never {@code null} * @throws IOException in case of an I/O error * @since 1.1 */ public static byte[] readFileToByteArray(final File file) throws IOException { InputStream in = null; try { in = new FileInputStream(file); return IOUtils.getBytes(in); } finally { IOUtils.close(in); } } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/IOUtils.java ================================================ package com.taobao.arthas.common; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.ByteArrayOutputStream; import java.io.Closeable; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.Reader; import java.io.Writer; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; /** * * @author hengyunabc 2018-11-06 * */ public class IOUtils { private IOUtils() { } public static String toString(InputStream inputStream) throws IOException { ByteArrayOutputStream result = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int length; while ((length = inputStream.read(buffer)) != -1) { result.write(buffer, 0, length); } return result.toString("UTF-8"); } public static void copy(InputStream in, OutputStream out) throws IOException { byte[] buffer = new byte[1024]; int len; while ((len = in.read(buffer)) != -1) { out.write(buffer, 0, len); } } /** * @return a byte[] containing the information contained in the specified * InputStream. * @throws java.io.IOException */ public static byte[] getBytes(InputStream input) throws IOException { ByteArrayOutputStream result = new ByteArrayOutputStream(); copy(input, result); result.close(); return result.toByteArray(); } public static IOException close(InputStream input) { return close((Closeable) input); } public static IOException close(OutputStream output) { return close((Closeable) output); } public static IOException close(final Reader input) { return close((Closeable) input); } public static IOException close(final Writer output) { return close((Closeable) output); } public static IOException close(final Closeable closeable) { try { if (closeable != null) { closeable.close(); } } catch (final IOException ioe) { return ioe; } return null; } // support jdk6 public static IOException close(final ZipFile zip) { try { if (zip != null) { zip.close(); } } catch (final IOException ioe) { return ioe; } return null; } public static boolean isSubFile(File parent, File child) throws IOException { return child.getCanonicalPath().startsWith(parent.getCanonicalPath() + File.separator); } public static boolean isSubFile(String parent, String child) throws IOException { return isSubFile(new File(parent), new File(child)); } public static void unzip(String zipFile, String extractFolder) throws IOException { File file = new File(zipFile); ZipFile zip = null; try { int BUFFER = 1024 * 8; zip = new ZipFile(file); File newPath = new File(extractFolder); newPath.mkdirs(); Enumeration zipFileEntries = zip.entries(); // Process each entry while (zipFileEntries.hasMoreElements()) { // grab a zip file entry ZipEntry entry = (ZipEntry) zipFileEntries.nextElement(); String currentEntry = entry.getName(); File destFile = new File(newPath, currentEntry); if (!isSubFile(newPath, destFile)) { throw new IOException("Bad zip entry: " + currentEntry); } // destFile = new File(newPath, destFile.getName()); File destinationParent = destFile.getParentFile(); // create the parent directory structure if needed destinationParent.mkdirs(); if (!entry.isDirectory()) { BufferedInputStream is = null; BufferedOutputStream dest = null; try { is = new BufferedInputStream(zip.getInputStream(entry)); int currentByte; // establish buffer for writing file byte data[] = new byte[BUFFER]; // write the current file to disk FileOutputStream fos = new FileOutputStream(destFile); dest = new BufferedOutputStream(fos, BUFFER); // read and write until last byte is encountered while ((currentByte = is.read(data, 0, BUFFER)) != -1) { dest.write(data, 0, currentByte); } dest.flush(); } finally { close(dest); close(is); } } } } finally { close(zip); } } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/JavaVersionUtils.java ================================================ package com.taobao.arthas.common; import java.util.Properties; /** * * @author hengyunabc 2018-11-21 * */ public class JavaVersionUtils { private static final String VERSION_PROP_NAME = "java.specification.version"; private static final String JAVA_VERSION_STR = System.getProperty(VERSION_PROP_NAME); private static final float JAVA_VERSION = Float.parseFloat(JAVA_VERSION_STR); private JavaVersionUtils() { } public static String javaVersionStr() { return JAVA_VERSION_STR; } public static String javaVersionStr(Properties props) { return (null != props) ? props.getProperty(VERSION_PROP_NAME): null; } public static float javaVersion() { return JAVA_VERSION; } public static boolean isJava6() { return "1.6".equals(JAVA_VERSION_STR); } public static boolean isJava7() { return "1.7".equals(JAVA_VERSION_STR); } public static boolean isJava8() { return "1.8".equals(JAVA_VERSION_STR); } public static boolean isJava9() { return "9".equals(JAVA_VERSION_STR); } public static boolean isLessThanJava9() { return JAVA_VERSION < 9.0f; } public static boolean isGreaterThanJava7() { return JAVA_VERSION > 1.7f; } public static boolean isGreaterThanJava8() { return JAVA_VERSION > 1.8f; } public static boolean isGreaterThanJava11() { return JAVA_VERSION > 11.0f; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/OSUtils.java ================================================ package com.taobao.arthas.common; import java.io.File; import java.util.Locale; /** * * @author hengyunabc 2018-11-08 * */ public class OSUtils { private static final String OPERATING_SYSTEM_NAME = System.getProperty("os.name").toLowerCase(Locale.ENGLISH); private static final String OPERATING_SYSTEM_ARCH = System.getProperty("os.arch").toLowerCase(Locale.ENGLISH); private static final String UNKNOWN = "unknown"; static PlatformEnum platform; static String arch; static { if (OPERATING_SYSTEM_NAME.startsWith("linux")) { platform = PlatformEnum.LINUX; } else if (OPERATING_SYSTEM_NAME.startsWith("mac") || OPERATING_SYSTEM_NAME.startsWith("darwin")) { platform = PlatformEnum.MACOSX; } else if (OPERATING_SYSTEM_NAME.startsWith("windows")) { platform = PlatformEnum.WINDOWS; } else { platform = PlatformEnum.UNKNOWN; } arch = normalizeArch(OPERATING_SYSTEM_ARCH); } private OSUtils() { } public static boolean isWindows() { return platform == PlatformEnum.WINDOWS; } public static boolean isLinux() { return platform == PlatformEnum.LINUX; } public static boolean isMac() { return platform == PlatformEnum.MACOSX; } public static boolean isCygwinOrMinGW() { if (isWindows()) { if ((System.getenv("MSYSTEM") != null && System.getenv("MSYSTEM").startsWith("MINGW")) || "/bin/bash".equals(System.getenv("SHELL"))) { return true; } } return false; } public static String arch() { return arch; } public static boolean isArm32() { return "arm_32".equals(arch); } public static boolean isArm64() { return "aarch_64".equals(arch); } public static boolean isX86() { return "x86_32".equals(arch); } public static boolean isX86_64() { return "x86_64".equals(arch); } private static String normalizeArch(String value) { value = normalize(value); if (value.matches("^(x8664|amd64|ia32e|em64t|x64)$")) { return "x86_64"; } if (value.matches("^(x8632|x86|i[3-6]86|ia32|x32)$")) { return "x86_32"; } if (value.matches("^(ia64w?|itanium64)$")) { return "itanium_64"; } if ("ia64n".equals(value)) { return "itanium_32"; } if (value.matches("^(sparc|sparc32)$")) { return "sparc_32"; } if (value.matches("^(sparcv9|sparc64)$")) { return "sparc_64"; } if (value.matches("^(arm|arm32)$")) { return "arm_32"; } if ("aarch64".equals(value)) { return "aarch_64"; } if (value.matches("^(mips|mips32)$")) { return "mips_32"; } if (value.matches("^(mipsel|mips32el)$")) { return "mipsel_32"; } if ("mips64".equals(value)) { return "mips_64"; } if ("mips64el".equals(value)) { return "mipsel_64"; } if (value.matches("^(ppc|ppc32)$")) { return "ppc_32"; } if (value.matches("^(ppcle|ppc32le)$")) { return "ppcle_32"; } if ("ppc64".equals(value)) { return "ppc_64"; } if ("ppc64le".equals(value)) { return "ppcle_64"; } if ("s390".equals(value)) { return "s390_32"; } if ("s390x".equals(value)) { return "s390_64"; } return value; } public static boolean isMuslLibc() { File ld_musl_x86_64_file = new File("/lib/ld-musl-x86_64.so.1"); File ld_musl_aarch64_file = new File("/lib/ld-musl-aarch64.so.1"); if(ld_musl_x86_64_file.exists() || ld_musl_aarch64_file.exists()){ return true; } return false; } private static String normalize(String value) { if (value == null) { return ""; } return value.toLowerCase(Locale.US).replaceAll("[^a-z0-9]+", ""); } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/Pair.java ================================================ package com.taobao.arthas.common; public class Pair { private final X x; private final Y y; public Pair(X x, Y y) { this.x = x; this.y = y; } public X getFirst() { return x; } public Y getSecond() { return y; } public static Pair make(A a, B b) { return new Pair(a, b); } @Override public boolean equals(Object o) { if (o == this) return true; if (!(o instanceof Pair)) return false; Pair other = (Pair) o; if (x == null) { if (other.x != null) return false; } else { if (!x.equals(other.x)) return false; } if (y == null) { if (other.y != null) return false; } else { if (!y.equals(other.y)) return false; } return true; } @Override public int hashCode() { int hashCode = 1; if (x != null) hashCode = x.hashCode(); if (y != null) hashCode = (hashCode * 31) + y.hashCode(); return hashCode; } @Override public String toString() { return "P[" + x + "," + y + "]"; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/PidUtils.java ================================================ package com.taobao.arthas.common; import java.lang.management.ManagementFactory; /** * * @author hengyunabc 2019-02-16 * */ public class PidUtils { private static String PID = "-1"; private static long pid = -1; private static String MAIN_CLASS = ""; static { // https://stackoverflow.com/a/7690178 try { String jvmName = ManagementFactory.getRuntimeMXBean().getName(); int index = jvmName.indexOf('@'); if (index > 0) { PID = Long.toString(Long.parseLong(jvmName.substring(0, index))); pid = Long.parseLong(PID); } } catch (Throwable e) { // ignore } try { String command = System.getProperty("sun.java.command", ""); // sun.java.command contains the main class name followed by its arguments, // so only take the first token as the main class name int spaceIndex = command.indexOf(' '); MAIN_CLASS = spaceIndex != -1 ? command.substring(0, spaceIndex) : command; } catch (Throwable e) { // ignore } } private PidUtils() { } public static String currentPid() { return PID; } public static long currentLongPid() { return pid; } public static String mainClass() { return MAIN_CLASS; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/PlatformEnum.java ================================================ package com.taobao.arthas.common; /** * Enum of supported operating systems. * */ public enum PlatformEnum { /** * Microsoft Windows */ WINDOWS, /** * A flavor of Linux */ LINUX, /** * macOS (OS X) */ MACOSX, UNKNOWN } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/ReflectException.java ================================================ package com.taobao.arthas.common; public class ReflectException extends RuntimeException { private static final long serialVersionUID = 1L; private Throwable cause; public ReflectException(Throwable cause) { super(cause != null ? cause.getClass().getName() + "-->" + cause.getMessage() : ""); this.cause = cause; } public Throwable getCause() { return this.cause; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/ReflectUtils.java ================================================ package com.taobao.arthas.common; import java.beans.BeanInfo; import java.beans.IntrospectionException; import java.beans.Introspector; import java.beans.PropertyDescriptor; import java.lang.invoke.MethodHandle; import java.lang.invoke.MethodHandles; import java.lang.invoke.MethodHandles.Lookup; import java.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.security.AccessController; import java.security.PrivilegedAction; import java.security.PrivilegedExceptionAction; import java.security.ProtectionDomain; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; /** * from spring * @version $Id: ReflectUtils.java,v 1.30 2009/01/11 19:47:49 herbyderby Exp $ */ @SuppressWarnings({ "rawtypes", "unchecked" }) public class ReflectUtils { private ReflectUtils() { } private static final Map primitives = new HashMap(8); private static final Map transforms = new HashMap(8); private static final ClassLoader defaultLoader = ReflectUtils.class.getClassLoader(); // SPRING PATCH BEGIN private static final Method privateLookupInMethod; private static final Method lookupDefineClassMethod; private static final Method classLoaderDefineClassMethod; private static final ProtectionDomain PROTECTION_DOMAIN; private static final Throwable THROWABLE; private static final List OBJECT_METHODS = new ArrayList(); static { Method privateLookupIn; Method lookupDefineClass; Method classLoaderDefineClass; ProtectionDomain protectionDomain; Throwable throwable = null; try { privateLookupIn = (Method) AccessController.doPrivileged(new PrivilegedExceptionAction() { public Object run() throws Exception { try { return MethodHandles.class.getMethod("privateLookupIn", Class.class, MethodHandles.Lookup.class); } catch (NoSuchMethodException ex) { return null; } } }); lookupDefineClass = (Method) AccessController.doPrivileged(new PrivilegedExceptionAction() { public Object run() throws Exception { try { return MethodHandles.Lookup.class.getMethod("defineClass", byte[].class); } catch (NoSuchMethodException ex) { return null; } } }); classLoaderDefineClass = (Method) AccessController.doPrivileged(new PrivilegedExceptionAction() { public Object run() throws Exception { return ClassLoader.class.getDeclaredMethod("defineClass", String.class, byte[].class, Integer.TYPE, Integer.TYPE, ProtectionDomain.class); } }); protectionDomain = getProtectionDomain(ReflectUtils.class); AccessController.doPrivileged(new PrivilegedExceptionAction() { public Object run() throws Exception { Method[] methods = Object.class.getDeclaredMethods(); for (Method method : methods) { if ("finalize".equals(method.getName()) || (method.getModifiers() & (Modifier.FINAL | Modifier.STATIC)) > 0) { continue; } OBJECT_METHODS.add(method); } return null; } }); } catch (Throwable t) { privateLookupIn = null; lookupDefineClass = null; classLoaderDefineClass = null; protectionDomain = null; throwable = t; } privateLookupInMethod = privateLookupIn; lookupDefineClassMethod = lookupDefineClass; classLoaderDefineClassMethod = classLoaderDefineClass; PROTECTION_DOMAIN = protectionDomain; THROWABLE = throwable; } // SPRING PATCH END private static final String[] CGLIB_PACKAGES = { "java.lang", }; static { primitives.put("byte", Byte.TYPE); primitives.put("char", Character.TYPE); primitives.put("double", Double.TYPE); primitives.put("float", Float.TYPE); primitives.put("int", Integer.TYPE); primitives.put("long", Long.TYPE); primitives.put("short", Short.TYPE); primitives.put("boolean", Boolean.TYPE); transforms.put("byte", "B"); transforms.put("char", "C"); transforms.put("double", "D"); transforms.put("float", "F"); transforms.put("int", "I"); transforms.put("long", "J"); transforms.put("short", "S"); transforms.put("boolean", "Z"); } public static ProtectionDomain getProtectionDomain(final Class source) { if (source == null) { return null; } return (ProtectionDomain) AccessController.doPrivileged(new PrivilegedAction() { public Object run() { return source.getProtectionDomain(); } }); } public static Constructor findConstructor(String desc) { return findConstructor(desc, defaultLoader); } public static Constructor findConstructor(String desc, ClassLoader loader) { try { int lparen = desc.indexOf('('); String className = desc.substring(0, lparen).trim(); return getClass(className, loader).getConstructor(parseTypes(desc, loader)); } catch (ClassNotFoundException ex) { throw new ReflectException(ex); } catch (NoSuchMethodException ex) { throw new ReflectException(ex); } } public static Method findMethod(String desc) { return findMethod(desc, defaultLoader); } public static Method findMethod(String desc, ClassLoader loader) { try { int lparen = desc.indexOf('('); int dot = desc.lastIndexOf('.', lparen); String className = desc.substring(0, dot).trim(); String methodName = desc.substring(dot + 1, lparen).trim(); return getClass(className, loader).getDeclaredMethod(methodName, parseTypes(desc, loader)); } catch (ClassNotFoundException ex) { throw new ReflectException(ex); } catch (NoSuchMethodException ex) { throw new ReflectException(ex); } } private static Class[] parseTypes(String desc, ClassLoader loader) throws ClassNotFoundException { int lparen = desc.indexOf('('); int rparen = desc.indexOf(')', lparen); List params = new ArrayList(); int start = lparen + 1; for (;;) { int comma = desc.indexOf(',', start); if (comma < 0) { break; } params.add(desc.substring(start, comma).trim()); start = comma + 1; } if (start < rparen) { params.add(desc.substring(start, rparen).trim()); } Class[] types = new Class[params.size()]; for (int i = 0; i < types.length; i++) { types[i] = getClass((String) params.get(i), loader); } return types; } private static Class getClass(String className, ClassLoader loader) throws ClassNotFoundException { return getClass(className, loader, CGLIB_PACKAGES); } private static Class getClass(String className, ClassLoader loader, String[] packages) throws ClassNotFoundException { String save = className; int dimensions = 0; int index = 0; while ((index = className.indexOf("[]", index) + 1) > 0) { dimensions++; } StringBuilder brackets = new StringBuilder(className.length() - dimensions); for (int i = 0; i < dimensions; i++) { brackets.append('['); } className = className.substring(0, className.length() - 2 * dimensions); String prefix = (dimensions > 0) ? brackets + "L" : ""; String suffix = (dimensions > 0) ? ";" : ""; try { return Class.forName(prefix + className + suffix, false, loader); } catch (ClassNotFoundException ignore) { } for (int i = 0; i < packages.length; i++) { try { return Class.forName(prefix + packages[i] + '.' + className + suffix, false, loader); } catch (ClassNotFoundException ignore) { } } if (dimensions == 0) { Class c = (Class) primitives.get(className); if (c != null) { return c; } } else { String transform = (String) transforms.get(className); if (transform != null) { try { return Class.forName(brackets + transform, false, loader); } catch (ClassNotFoundException ignore) { } } } throw new ClassNotFoundException(save); } public static final Class[] EMPTY_CLASS_ARRAY = new Class[0]; public static Object newInstance(Class type) { return newInstance(type, EMPTY_CLASS_ARRAY, null); } public static Object newInstance(Class type, Class[] parameterTypes, Object[] args) { return newInstance(getConstructor(type, parameterTypes), args); } public static Object newInstance(final Constructor cstruct, final Object[] args) { boolean flag = cstruct.isAccessible(); try { if (!flag) { cstruct.setAccessible(true); } Object result = cstruct.newInstance(args); return result; } catch (InstantiationException e) { throw new ReflectException(e); } catch (IllegalAccessException e) { throw new ReflectException(e); } catch (InvocationTargetException e) { throw new ReflectException(e.getTargetException()); } finally { if (!flag) { cstruct.setAccessible(flag); } } } public static Constructor getConstructor(Class type, Class[] parameterTypes) { try { Constructor constructor = type.getDeclaredConstructor(parameterTypes); constructor.setAccessible(true); return constructor; } catch (NoSuchMethodException e) { throw new ReflectException(e); } } public static String[] getNames(Class[] classes) { if (classes == null) return null; String[] names = new String[classes.length]; for (int i = 0; i < names.length; i++) { names[i] = classes[i].getName(); } return names; } public static Class[] getClasses(Object[] objects) { Class[] classes = new Class[objects.length]; for (int i = 0; i < objects.length; i++) { classes[i] = objects[i].getClass(); } return classes; } public static Method findNewInstance(Class iface) { Method m = findInterfaceMethod(iface); if (!m.getName().equals("newInstance")) { throw new IllegalArgumentException(iface + " missing newInstance method"); } return m; } public static Method[] getPropertyMethods(PropertyDescriptor[] properties, boolean read, boolean write) { Set methods = new HashSet(); for (int i = 0; i < properties.length; i++) { PropertyDescriptor pd = properties[i]; if (read) { methods.add(pd.getReadMethod()); } if (write) { methods.add(pd.getWriteMethod()); } } methods.remove(null); return (Method[]) methods.toArray(new Method[methods.size()]); } public static PropertyDescriptor[] getBeanProperties(Class type) { return getPropertiesHelper(type, true, true); } public static PropertyDescriptor[] getBeanGetters(Class type) { return getPropertiesHelper(type, true, false); } public static PropertyDescriptor[] getBeanSetters(Class type) { return getPropertiesHelper(type, false, true); } private static PropertyDescriptor[] getPropertiesHelper(Class type, boolean read, boolean write) { try { BeanInfo info = Introspector.getBeanInfo(type, Object.class); PropertyDescriptor[] all = info.getPropertyDescriptors(); if (read && write) { return all; } List properties = new ArrayList(all.length); for (int i = 0; i < all.length; i++) { PropertyDescriptor pd = all[i]; if ((read && pd.getReadMethod() != null) || (write && pd.getWriteMethod() != null)) { properties.add(pd); } } return (PropertyDescriptor[]) properties.toArray(new PropertyDescriptor[properties.size()]); } catch (IntrospectionException e) { throw new ReflectException(e); } } public static Method findDeclaredMethod(final Class type, final String methodName, final Class[] parameterTypes) throws NoSuchMethodException { Class cl = type; while (cl != null) { try { return cl.getDeclaredMethod(methodName, parameterTypes); } catch (NoSuchMethodException e) { cl = cl.getSuperclass(); } } throw new NoSuchMethodException(methodName); } public static List addAllMethods(final Class type, final List list) { if (type == Object.class) { list.addAll(OBJECT_METHODS); } else list.addAll(java.util.Arrays.asList(type.getDeclaredMethods())); Class superclass = type.getSuperclass(); if (superclass != null) { addAllMethods(superclass, list); } Class[] interfaces = type.getInterfaces(); for (int i = 0; i < interfaces.length; i++) { addAllMethods(interfaces[i], list); } return list; } public static List addAllInterfaces(Class type, List list) { Class superclass = type.getSuperclass(); if (superclass != null) { list.addAll(Arrays.asList(type.getInterfaces())); addAllInterfaces(superclass, list); } return list; } public static Method findInterfaceMethod(Class iface) { if (!iface.isInterface()) { throw new IllegalArgumentException(iface + " is not an interface"); } Method[] methods = iface.getDeclaredMethods(); if (methods.length != 1) { throw new IllegalArgumentException("expecting exactly 1 method in " + iface); } return methods[0]; } // SPRING PATCH BEGIN public static Class defineClass(String className, byte[] b, ClassLoader loader) throws Exception { return defineClass(className, b, loader, null, null); } public static Class defineClass(String className, byte[] b, ClassLoader loader, ProtectionDomain protectionDomain) throws Exception { return defineClass(className, b, loader, protectionDomain, null); } public static Class defineClass(String className, byte[] b, ClassLoader loader, ProtectionDomain protectionDomain, Class contextClass) throws Exception { Class c = null; // 在 jdk 17之后，需要hack方式来调用 #2659 if (c == null && classLoaderDefineClassMethod != null) { Lookup implLookup = UnsafeUtils.implLookup(); MethodHandle unreflect = implLookup.unreflect(classLoaderDefineClassMethod); if (protectionDomain == null) { protectionDomain = PROTECTION_DOMAIN; } try { c = (Class) unreflect.invoke(loader, className, b, 0, b.length, protectionDomain); } catch (InvocationTargetException ex) { throw new ReflectException(ex.getTargetException()); } catch (Throwable ex) { // Fall through if setAccessible fails with InaccessibleObjectException on JDK // 9+ // (on the module path and/or with a JVM bootstrapped with // --illegal-access=deny) if (!ex.getClass().getName().endsWith("InaccessibleObjectException")) { throw new ReflectException(ex); } } } // Preferred option: JDK 9+ Lookup.defineClass API if ClassLoader matches if (contextClass != null && contextClass.getClassLoader() == loader && privateLookupInMethod != null && lookupDefineClassMethod != null) { try { MethodHandles.Lookup lookup = (MethodHandles.Lookup) privateLookupInMethod.invoke(null, contextClass, MethodHandles.lookup()); c = (Class) lookupDefineClassMethod.invoke(lookup, b); } catch (InvocationTargetException ex) { Throwable target = ex.getTargetException(); if (target.getClass() != LinkageError.class && target.getClass() != IllegalArgumentException.class) { throw new ReflectException(target); } // in case of plain LinkageError (class already defined) // or IllegalArgumentException (class in different package): // fall through to traditional ClassLoader.defineClass below } catch (Throwable ex) { throw new ReflectException(ex); } } // Classic option: protected ClassLoader.defineClass method if (c == null && classLoaderDefineClassMethod != null) { if (protectionDomain == null) { protectionDomain = PROTECTION_DOMAIN; } Object[] args = new Object[] { className, b, 0, b.length, protectionDomain }; try { if (!classLoaderDefineClassMethod.isAccessible()) { classLoaderDefineClassMethod.setAccessible(true); } c = (Class) classLoaderDefineClassMethod.invoke(loader, args); } catch (InvocationTargetException ex) { throw new ReflectException(ex.getTargetException()); } catch (Throwable ex) { // Fall through if setAccessible fails with InaccessibleObjectException on JDK // 9+ // (on the module path and/or with a JVM bootstrapped with // --illegal-access=deny) if (!ex.getClass().getName().endsWith("InaccessibleObjectException")) { throw new ReflectException(ex); } } } // Fallback option: JDK 9+ Lookup.defineClass API even if ClassLoader does not // match if (c == null && contextClass != null && contextClass.getClassLoader() != loader && privateLookupInMethod != null && lookupDefineClassMethod != null) { try { MethodHandles.Lookup lookup = (MethodHandles.Lookup) privateLookupInMethod.invoke(null, contextClass, MethodHandles.lookup()); c = (Class) lookupDefineClassMethod.invoke(lookup, b); } catch (InvocationTargetException ex) { throw new ReflectException(ex.getTargetException()); } catch (Throwable ex) { throw new ReflectException(ex); } } // No defineClass variant available at all? if (c == null) { throw new ReflectException(THROWABLE); } // Force static initializers to run. Class.forName(className, true, loader); return c; } // SPRING PATCH END public static int findPackageProtected(Class[] classes) { for (int i = 0; i < classes.length; i++) { if (!Modifier.isPublic(classes[i].getModifiers())) { return i; } } return 0; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/SocketUtils.java ================================================ package com.taobao.arthas.common; import java.net.InetAddress; import java.net.ServerSocket; import java.util.List; import java.util.Random; import java.util.concurrent.Callable; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeoutException; import javax.net.ServerSocketFactory; /** * * @author hengyunabc 2018-11-07 * */ public class SocketUtils { /** * The default minimum value for port ranges used when finding an available * socket port. */ public static final int PORT_RANGE_MIN = 1024; /** * The default maximum value for port ranges used when finding an available * socket port. */ public static final int PORT_RANGE_MAX = 65535; private static final Random random = new Random(System.currentTimeMillis()); private SocketUtils() { } public static long findTcpListenProcess(int port) { // Add a timeout of 5 seconds to prevent blocking final int TIMEOUT_SECONDS = 5; ExecutorService executor = Executors.newSingleThreadExecutor(); try { Future future = executor.submit(new Callable() { @Override public Long call() throws Exception { return doFindTcpListenProcess(port); } }); try { return future.get(TIMEOUT_SECONDS, TimeUnit.SECONDS); } catch (TimeoutException e) { future.cancel(true); return -1; } catch (Exception e) { return -1; } } finally { executor.shutdownNow(); } } private static long doFindTcpListenProcess(int port) { try { if (OSUtils.isWindows()) { return findTcpListenProcessOnWindows(port); } if (OSUtils.isLinux() || OSUtils.isMac()) { return findTcpListenProcessOnUnix(port); } } catch (Throwable e) { // ignore } return -1; } private static long findTcpListenProcessOnWindows(int port) { String[] command = { "netstat", "-ano", "-p", "TCP" }; List lines = ExecutingCommand.runNative(command); for (String line : lines) { if (line.contains("LISTENING")) { // TCP 0.0.0.0:49168 0.0.0.0:0 LISTENING 476 String[] strings = line.trim().split("\\s+"); if (strings.length == 5) { if (strings[1].endsWith(":" + port)) { return Long.parseLong(strings[4]); } } } } return -1; } private static long findTcpListenProcessOnUnix(int port) { String pid = ExecutingCommand.getFirstAnswer("lsof -t -s TCP:LISTEN -i TCP:" + port); if (pid != null && !pid.trim().isEmpty()) { try { return Long.parseLong(pid.trim()); } catch (NumberFormatException e) { // ignore } } return -1; } public static boolean isTcpPortAvailable(int port) { try { ServerSocket serverSocket = ServerSocketFactory.getDefault().createServerSocket(port, 1, InetAddress.getByName("localhost")); serverSocket.close(); return true; } catch (Exception ex) { return false; } } /** * Find an available TCP port randomly selected from the range * [{@value #PORT_RANGE_MIN}, {@value #PORT_RANGE_MAX}]. * * @return an available TCP port number * @throws IllegalStateException if no available port could be found */ public static int findAvailableTcpPort() { return findAvailableTcpPort(PORT_RANGE_MIN); } /** * Find an available TCP port randomly selected from the range [{@code minPort}, * {@value #PORT_RANGE_MAX}]. * * @param minPort the minimum port number * @return an available TCP port number * @throws IllegalStateException if no available port could be found */ public static int findAvailableTcpPort(int minPort) { return findAvailableTcpPort(minPort, PORT_RANGE_MAX); } /** * Find an available TCP port randomly selected from the range [{@code minPort}, * {@code maxPort}]. * * @param minPort the minimum port number * @param maxPort the maximum port number * @return an available TCP port number * @throws IllegalStateException if no available port could be found */ public static int findAvailableTcpPort(int minPort, int maxPort) { return findAvailablePort(minPort, maxPort); } /** * Find an available port for this {@code SocketType}, randomly selected from * the range [{@code minPort}, {@code maxPort}]. * * @param minPort the minimum port number * @param maxPort the maximum port number * @return an available port number for this socket type * @throws IllegalStateException if no available port could be found */ private static int findAvailablePort(int minPort, int maxPort) { int portRange = maxPort - minPort; int candidatePort; int searchCounter = 0; do { if (searchCounter > portRange) { throw new IllegalStateException( String.format("Could not find an available tcp port in the range [%d, %d] after %d attempts", minPort, maxPort, searchCounter)); } candidatePort = findRandomPort(minPort, maxPort); searchCounter++; } while (!isTcpPortAvailable(candidatePort)); return candidatePort; } /** * Find a pseudo-random port number within the range [{@code minPort}, * {@code maxPort}]. * * @param minPort the minimum port number * @param maxPort the maximum port number * @return a random port number within the specified range */ private static int findRandomPort(int minPort, int maxPort) { int portRange = maxPort - minPort; return minPort + random.nextInt(portRange + 1); } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/UnsafeUtils.java ================================================ package com.taobao.arthas.common; import java.lang.invoke.MethodHandles; import java.lang.reflect.Field; import sun.misc.Unsafe; /** * * @author hengyunabc 2023-09-21 * */ public class UnsafeUtils { public static final Unsafe UNSAFE; private static MethodHandles.Lookup IMPL_LOOKUP; static { Unsafe unsafe = null; try { Field theUnsafeField = Unsafe.class.getDeclaredField("theUnsafe"); theUnsafeField.setAccessible(true); unsafe = (Unsafe) theUnsafeField.get(null); } catch (Throwable ignored) { // ignored } UNSAFE = unsafe; } public static MethodHandles.Lookup implLookup() { if (IMPL_LOOKUP == null) { Class lookupClass = MethodHandles.Lookup.class; try { Field implLookupField = lookupClass.getDeclaredField("IMPL_LOOKUP"); long offset = UNSAFE.staticFieldOffset(implLookupField); IMPL_LOOKUP = (MethodHandles.Lookup) UNSAFE.getObject(UNSAFE.staticFieldBase(implLookupField), offset); } catch (Throwable e) { // ignored } } return IMPL_LOOKUP; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/UsageRender.java ================================================ package com.taobao.arthas.common; /** * * @author hengyunabc 2018-11-22 * */ public class UsageRender { private UsageRender() { } public static String render(String usage) { if (AnsiLog.enableColor()) { StringBuilder sb = new StringBuilder(1024); String lines[] = usage.split("\\r?\\n"); for (String line : lines) { if (line.startsWith("Usage: ")) { sb.append(AnsiLog.green("Usage: ")); sb.append(line.substring("Usage: ".length())); } else if (!line.startsWith(" ") && line.endsWith(":")) { sb.append(AnsiLog.green(line)); } else { sb.append(line); } sb.append('\n'); } return sb.toString(); } else { return usage; } } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/VmToolUtils.java ================================================ package com.taobao.arthas.common; /** * * @author hengyunabc 2021-04-27 * */ public class VmToolUtils { private static String libName = null; static { if (OSUtils.isMac()) { libName = "libArthasJniLibrary.dylib"; } if (OSUtils.isLinux()) { if (OSUtils.isArm32()) { libName = "libArthasJniLibrary-arm.so"; } else if (OSUtils.isArm64()) { libName = "libArthasJniLibrary-aarch64.so"; } else if (OSUtils.isX86_64()) { libName = "libArthasJniLibrary-x64.so"; }else { libName = "libArthasJniLibrary-" + OSUtils.arch() + ".so"; } } if (OSUtils.isWindows()) { libName = "libArthasJniLibrary-x64.dll"; if (OSUtils.isX86()) { libName = "libArthasJniLibrary-x86.dll"; } } } public static String detectLibName() { return libName; } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/concurrent/ConcurrentWeakKeyHashMap.java ================================================ /* * Copyright 2012 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ /* * Written by Doug Lea with assistance from members of JCP JSR-166 * Expert Group and released to the public domain, as explained at * http://creativecommons.org/licenses/publicdomain */ package com.taobao.arthas.common.concurrent; import java.lang.ref.Reference; import java.lang.ref.ReferenceQueue; import java.lang.ref.WeakReference; import java.util.AbstractCollection; import java.util.AbstractMap; import java.util.AbstractSet; import java.util.Arrays; import java.util.Collection; import java.util.ConcurrentModificationException; import java.util.Enumeration; import java.util.Hashtable; import java.util.Iterator; import java.util.Map; import java.util.NoSuchElementException; import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java.util.concurrent.locks.ReentrantLock; /** * An alternative weak-key {@link ConcurrentMap} which is similar to * {@link ConcurrentHashMap}. * @param the type of keys maintained by this map * @param the type of mapped values */ public final class ConcurrentWeakKeyHashMap extends AbstractMap implements ConcurrentMap { /* * The basic strategy is to subdivide the table among Segments, * each of which itself is a concurrently readable hash table. */ /** * The default initial capacity for this table, used when not otherwise * specified in a constructor. */ static final int DEFAULT_INITIAL_CAPACITY = 16; /** * The default load factor for this table, used when not otherwise specified * in a constructor. */ static final float DEFAULT_LOAD_FACTOR = 0.75f; /** * The default concurrency level for this table, used when not otherwise * specified in a constructor. */ static final int DEFAULT_CONCURRENCY_LEVEL = 16; /** * The maximum capacity, used if a higher value is implicitly specified by * either of the constructors with arguments. MUST be a power of two * <= 1<<30 to ensure that entries are indexable using integers. */ static final int MAXIMUM_CAPACITY = 1 << 30; /** * The maximum number of segments to allow; used to bound constructor * arguments. */ static final int MAX_SEGMENTS = 1 << 16; // slightly conservative /** * Number of unsynchronized retries in size and containsValue methods before * resorting to locking. This is used to avoid unbounded retries if tables * undergo continuous modification which would make it impossible to obtain * an accurate result. */ static final int RETRIES_BEFORE_LOCK = 2; /* ---------------- Fields -------------- */ /** * Mask value for indexing into segments. The upper bits of a key's hash * code are used to choose the segment. */ final int segmentMask; /** * Shift value for indexing within segments. */ final int segmentShift; /** * The segments, each of which is a specialized hash table */ final Segment[] segments; Set keySet; Set> entrySet; Collection values; /* ---------------- Small Utilities -------------- */ /** * Applies a supplemental hash function to a given hashCode, which defends * against poor quality hash functions. This is critical because * ConcurrentReferenceHashMap uses power-of-two length hash tables, that * otherwise encounter collisions for hashCodes that do not differ in lower * or upper bits. */ private static int hash(int h) { // Spread bits to regularize both segment and index locations, // using variant of single-word Wang/Jenkins hash. h += h << 15 ^ 0xffffcd7d; h ^= h >>> 10; h += h << 3; h ^= h >>> 6; h += (h << 2) + (h << 14); return h ^ h >>> 16; } /** * Returns the segment that should be used for key with given hash. * * @param hash the hash code for the key * @return the segment */ Segment segmentFor(int hash) { return segments[hash >>> segmentShift & segmentMask]; } private static int hashOf(Object key) { return hash(key.hashCode()); } /* ---------------- Inner Classes -------------- */ /** * A weak-key reference which stores the key hash needed for reclamation. */ static final class WeakKeyReference extends WeakReference { final int hash; WeakKeyReference(K key, int hash, ReferenceQueue refQueue) { super(key, refQueue); this.hash = hash; } public int keyHash() { return hash; } public Object keyRef() { return this; } } /** * ConcurrentReferenceHashMap list entry. Note that this is never exported * out as a user-visible Map.Entry. * * Because the value field is volatile, not final, it is legal wrt * the Java Memory Model for an unsynchronized reader to see null * instead of initial value when read via a data race. Although a * reordering leading to this is not likely to ever actually * occur, the Segment.readValueUnderLock method is used as a * backup in case a null (pre-initialized) value is ever seen in * an unsynchronized access method. */ static final class HashEntry { final Object keyRef; final int hash; volatile Object valueRef; final HashEntry next; HashEntry( K key, int hash, HashEntry next, V value, ReferenceQueue refQueue) { this.hash = hash; this.next = next; keyRef = new WeakKeyReference(key, hash, refQueue); valueRef = value; } @SuppressWarnings("unchecked") K key() { return ((Reference) keyRef).get(); } V value() { return dereferenceValue(valueRef); } @SuppressWarnings("unchecked") V dereferenceValue(Object value) { if (value instanceof WeakKeyReference) { return ((Reference) value).get(); } return (V) value; } void setValue(V value) { valueRef = value; } @SuppressWarnings("unchecked") static HashEntry[] newArray(int i) { return new HashEntry[i]; } } /** * Segments are specialized versions of hash tables. This subclasses from * ReentrantLock opportunistically, just to simplify some locking and avoid * separate construction. */ static final class Segment extends ReentrantLock { /* * Segments maintain a table of entry lists that are ALWAYS kept in a * consistent state, so can be read without locking. Next fields of * nodes are immutable (final). All list additions are performed at the * front of each bin. This makes it easy to check changes, and also fast * to traverse. When nodes would otherwise be changed, new nodes are * created to replace them. This works well for hash tables since the * bin lists tend to be short. (The average length is less than two for * the default load factor threshold.) * * Read operations can thus proceed without locking, but rely on * selected uses of volatiles to ensure that completed write operations * performed by other threads are noticed. For most purposes, the * "count" field, tracking the number of elements, serves as that * volatile variable ensuring visibility. This is convenient because * this field needs to be read in many read operations anyway: * * - All (unsynchronized) read operations must first read the * "count" field, and should not look at table entries if * it is 0. * * - All (synchronized) write operations should write to * the "count" field after structurally changing any bin. * The operations must not take any action that could even * momentarily cause a concurrent read operation to see * inconsistent data. This is made easier by the nature of * the read operations in Map. For example, no operation * can reveal that the table has grown but the threshold * has not yet been updated, so there are no atomicity * requirements for this with respect to reads. * * As a guide, all critical volatile reads and writes to the count field * are marked in code comments. */ private static final long serialVersionUID = -8328104880676891126L; /** * The number of elements in this segment's region. */ transient volatile int count; /** * Number of updates that alter the size of the table. This is used * during bulk-read methods to make sure they see a consistent snapshot: * If modCounts change during a traversal of segments computing size or * checking containsValue, then we might have an inconsistent view of * state so (usually) must retry. */ int modCount; /** * The table is rehashed when its size exceeds this threshold. * (The value of this field is always (capacity * loadFactor).) */ int threshold; /** * The per-segment table. */ transient volatile HashEntry[] table; /** * The load factor for the hash table. Even though this value is same * for all segments, it is replicated to avoid needing links to outer * object. */ final float loadFactor; /** * The collected weak-key reference queue for this segment. This should * be (re)initialized whenever table is assigned, */ transient volatile ReferenceQueue refQueue; Segment(int initialCapacity, float lf) { loadFactor = lf; setTable(HashEntry.newArray(initialCapacity)); } @SuppressWarnings("unchecked") static Segment[] newArray(int i) { return new Segment[i]; } private static boolean keyEq(Object src, Object dest) { return src.equals(dest); } /** * Sets table to new HashEntry array. Call only while holding lock or in * constructor. */ void setTable(HashEntry[] newTable) { threshold = (int) (newTable.length * loadFactor); table = newTable; refQueue = new ReferenceQueue(); } /** * Returns properly casted first entry of bin for given hash. */ HashEntry getFirst(int hash) { HashEntry[] tab = table; return tab[hash & tab.length - 1]; } HashEntry newHashEntry( K key, int hash, HashEntry next, V value) { return new HashEntry( key, hash, next, value, refQueue); } /** * Reads value field of an entry under lock. Called if value field ever * appears to be null. This is possible only if a compiler happens to * reorder a HashEntry initialization with its table assignment, which * is legal under memory model but is not known to ever occur. */ V readValueUnderLock(HashEntry e) { lock(); try { removeStale(); return e.value(); } finally { unlock(); } } /* Specialized implementations of map methods */ V get(Object key, int hash) { if (count != 0) { // read-volatile HashEntry e = getFirst(hash); while (e != null) { if (e.hash == hash && keyEq(key, e.key())) { Object opaque = e.valueRef; if (opaque != null) { return e.dereferenceValue(opaque); } return readValueUnderLock(e); // recheck } e = e.next; } } return null; } boolean containsKey(Object key, int hash) { if (count != 0) { // read-volatile HashEntry e = getFirst(hash); while (e != null) { if (e.hash == hash && keyEq(key, e.key())) { return true; } e = e.next; } } return false; } boolean containsValue(Object value) { if (count != 0) { // read-volatile for (HashEntry e: table) { for (; e != null; e = e.next) { Object opaque = e.valueRef; V v; if (opaque == null) { v = readValueUnderLock(e); // recheck } else { v = e.dereferenceValue(opaque); } if (value.equals(v)) { return true; } } } } return false; } boolean replace(K key, int hash, V oldValue, V newValue) { lock(); try { removeStale(); HashEntry e = getFirst(hash); while (e != null && (e.hash != hash || !keyEq(key, e.key()))) { e = e.next; } boolean replaced = false; if (e != null && oldValue.equals(e.value())) { replaced = true; e.setValue(newValue); } return replaced; } finally { unlock(); } } V replace(K key, int hash, V newValue) { lock(); try { removeStale(); HashEntry e = getFirst(hash); while (e != null && (e.hash != hash || !keyEq(key, e.key()))) { e = e.next; } V oldValue = null; if (e != null) { oldValue = e.value(); e.setValue(newValue); } return oldValue; } finally { unlock(); } } V put(K key, int hash, V value, boolean onlyIfAbsent) { lock(); try { removeStale(); int c = count; if (c ++ > threshold) { // ensure capacity int reduced = rehash(); if (reduced > 0) { count = (c -= reduced) - 1; // write-volatile } } HashEntry[] tab = table; int index = hash & tab.length - 1; HashEntry first = tab[index]; HashEntry e = first; while (e != null && (e.hash != hash || !keyEq(key, e.key()))) { e = e.next; } V oldValue; if (e != null) { oldValue = e.value(); if (!onlyIfAbsent) { e.setValue(value); } } else { oldValue = null; ++ modCount; tab[index] = newHashEntry(key, hash, first, value); count = c; // write-volatile } return oldValue; } finally { unlock(); } } int rehash() { HashEntry[] oldTable = table; int oldCapacity = oldTable.length; if (oldCapacity >= MAXIMUM_CAPACITY) { return 0; } /* * Reclassify nodes in each list to new Map. Because we are using * power-of-two expansion, the elements from each bin must either * stay at same index, or move with a power of two offset. We * eliminate unnecessary node creation by catching cases where old * nodes can be reused because their next fields won't change. * Statistically, at the default threshold, only about one-sixth of * them need cloning when a table doubles. The nodes they replace * will be garbage collectable as soon as they are no longer * referenced by any reader thread that may be in the midst of * traversing table right now. */ HashEntry[] newTable = HashEntry.newArray(oldCapacity << 1); threshold = (int) (newTable.length * loadFactor); int sizeMask = newTable.length - 1; int reduce = 0; for (HashEntry e: oldTable) { // We need to guarantee that any existing reads of old Map can // proceed. So we cannot yet null out each bin. if (e != null) { HashEntry next = e.next; int idx = e.hash & sizeMask; // Single node on list if (next == null) { newTable[idx] = e; } else { // Reuse trailing consecutive sequence at same slot HashEntry lastRun = e; int lastIdx = idx; for (HashEntry last = next; last != null; last = last.next) { int k = last.hash & sizeMask; if (k != lastIdx) { lastIdx = k; lastRun = last; } } newTable[lastIdx] = lastRun; // Clone all remaining nodes for (HashEntry p = e; p != lastRun; p = p.next) { // Skip GC'd weak references K key = p.key(); if (key == null) { reduce++; continue; } int k = p.hash & sizeMask; HashEntry n = newTable[k]; newTable[k] = newHashEntry(key, p.hash, n, p.value()); } } } } table = newTable; return reduce; } /** * Remove; match on key only if value null, else match both. */ V remove(Object key, int hash, Object value, boolean refRemove) { lock(); try { if (!refRemove) { removeStale(); } int c = count - 1; HashEntry[] tab = table; int index = hash & tab.length - 1; HashEntry first = tab[index]; HashEntry e = first; // a reference remove operation compares the Reference instance while (e != null && key != e.keyRef && (refRemove || hash != e.hash || !keyEq(key, e.key()))) { e = e.next; } V oldValue = null; if (e != null) { V v = e.value(); if (value == null || value.equals(v)) { oldValue = v; // All entries following removed node can stay in list, // but all preceding ones need to be cloned. ++ modCount; HashEntry newFirst = e.next; for (HashEntry p = first; p != e; p = p.next) { K pKey = p.key(); if (pKey == null) { // Skip GC'd keys c --; continue; } newFirst = newHashEntry( pKey, p.hash, newFirst, p.value()); } tab[index] = newFirst; count = c; // write-volatile } } return oldValue; } finally { unlock(); } } @SuppressWarnings("rawtypes") void removeStale() { WeakKeyReference ref; while ((ref = (WeakKeyReference) refQueue.poll()) != null) { remove(ref.keyRef(), ref.keyHash(), null, true); } } void clear() { if (count != 0) { lock(); try { Arrays.fill(table, null); ++ modCount; // replace the reference queue to avoid unnecessary stale // cleanups refQueue = new ReferenceQueue(); count = 0; // write-volatile } finally { unlock(); } } } } /* ---------------- Public operations -------------- */ /** * Creates a new, empty map with the specified initial capacity, load factor * and concurrency level. * * @param initialCapacity the initial capacity. The implementation performs * internal sizing to accommodate this many elements. * @param loadFactor the load factor threshold, used to control resizing. * Resizing may be performed when the average number of * elements per bin exceeds this threshold. * @param concurrencyLevel the estimated number of concurrently updating * threads. The implementation performs internal * sizing to try to accommodate this many threads. * @throws IllegalArgumentException if the initial capacity is negative or * the load factor or concurrencyLevel are * nonpositive. */ public ConcurrentWeakKeyHashMap( int initialCapacity, float loadFactor, int concurrencyLevel) { if (!(loadFactor > 0) || initialCapacity < 0 || concurrencyLevel <= 0) { throw new IllegalArgumentException(); } if (concurrencyLevel > MAX_SEGMENTS) { concurrencyLevel = MAX_SEGMENTS; } // Find power-of-two sizes best matching arguments int sshift = 0; int ssize = 1; while (ssize < concurrencyLevel) { ++ sshift; ssize <<= 1; } segmentShift = 32 - sshift; segmentMask = ssize - 1; segments = Segment.newArray(ssize); if (initialCapacity > MAXIMUM_CAPACITY) { initialCapacity = MAXIMUM_CAPACITY; } int c = initialCapacity / ssize; if (c * ssize < initialCapacity) { ++ c; } int cap = 1; while (cap < c) { cap <<= 1; } for (int i = 0; i < segments.length; ++ i) { segments[i] = new Segment(cap, loadFactor); } } /** * Creates a new, empty map with the specified initial capacity and load * factor and with the default reference types (weak keys, strong values), * and concurrencyLevel (16). * * @param initialCapacity The implementation performs internal sizing to * accommodate this many elements. * @param loadFactor the load factor threshold, used to control resizing. * Resizing may be performed when the average number of * elements per bin exceeds this threshold. * @throws IllegalArgumentException if the initial capacity of elements is * negative or the load factor is * nonpositive */ public ConcurrentWeakKeyHashMap(int initialCapacity, float loadFactor) { this(initialCapacity, loadFactor, DEFAULT_CONCURRENCY_LEVEL); } /** * Creates a new, empty map with the specified initial capacity, and with * default reference types (weak keys, strong values), load factor (0.75) * and concurrencyLevel (16). * * @param initialCapacity the initial capacity. The implementation performs * internal sizing to accommodate this many elements. * @throws IllegalArgumentException if the initial capacity of elements is * negative. */ public ConcurrentWeakKeyHashMap(int initialCapacity) { this(initialCapacity, DEFAULT_LOAD_FACTOR, DEFAULT_CONCURRENCY_LEVEL); } /** * Creates a new, empty map with a default initial capacity (16), reference * types (weak keys, strong values), default load factor (0.75) and * concurrencyLevel (16). */ public ConcurrentWeakKeyHashMap() { this(DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR, DEFAULT_CONCURRENCY_LEVEL); } /** * Creates a new map with the same mappings as the given map. The map is * created with a capacity of 1.5 times the number of mappings in the given * map or 16 (whichever is greater), and a default load factor (0.75) and * concurrencyLevel (16). * * @param m the map */ public ConcurrentWeakKeyHashMap(Map m) { this(Math.max((int) (m.size() / DEFAULT_LOAD_FACTOR) + 1, DEFAULT_INITIAL_CAPACITY), DEFAULT_LOAD_FACTOR, DEFAULT_CONCURRENCY_LEVEL); putAll(m); } /** * Returns true if this map contains no key-value mappings. * * @return true if this map contains no key-value mappings */ @Override public boolean isEmpty() { final Segment[] segments = this.segments; /* * We keep track of per-segment modCounts to avoid ABA problems in which * an element in one segment was added and in another removed during * traversal, in which case the table was never actually empty at any * point. Note the similar use of modCounts in the size() and * containsValue() methods, which are the only other methods also * susceptible to ABA problems. */ int[] mc = new int[segments.length]; int mcsum = 0; for (int i = 0; i < segments.length; ++ i) { if (segments[i].count != 0) { return false; } else { mcsum += mc[i] = segments[i].modCount; } } // If mcsum happens to be zero, then we know we got a snapshot before // any modifications at all were made. This is probably common enough // to bother tracking. if (mcsum != 0) { for (int i = 0; i < segments.length; ++ i) { if (segments[i].count != 0 || mc[i] != segments[i].modCount) { return false; } } } return true; } /** * Returns the number of key-value mappings in this map. If the map contains * more than Integer.MAX_VALUE elements, returns * Integer.MAX_VALUE. * * @return the number of key-value mappings in this map */ @Override public int size() { final Segment[] segments = this.segments; long sum = 0; long check = 0; int[] mc = new int[segments.length]; // Try a few times to get accurate count. On failure due to continuous // async changes in table, resort to locking. for (int k = 0; k < RETRIES_BEFORE_LOCK; ++ k) { check = 0; sum = 0; int mcsum = 0; for (int i = 0; i < segments.length; ++ i) { sum += segments[i].count; mcsum += mc[i] = segments[i].modCount; } if (mcsum != 0) { for (int i = 0; i < segments.length; ++ i) { check += segments[i].count; if (mc[i] != segments[i].modCount) { check = -1; // force retry break; } } } if (check == sum) { break; } } if (check != sum) { // Resort to locking all segments sum = 0; for (Segment segment: segments) { segment.lock(); } for (Segment segment: segments) { sum += segment.count; } for (Segment segment: segments) { segment.unlock(); } } if (sum > Integer.MAX_VALUE) { return Integer.MAX_VALUE; } else { return (int) sum; } } /** * Returns the value to which the specified key is mapped, or {@code null} * if this map contains no mapping for the key. * *

More formally, if this map contains a mapping from a key {@code k} to * a value {@code v} such that {@code key.equals(k)}, then this method * returns {@code v}; otherwise it returns {@code null}. (There can be at * most one such mapping.) * * @throws NullPointerException if the specified key is null */ @Override public V get(Object key) { int hash = hashOf(key); return segmentFor(hash).get(key, hash); } /** * Tests if the specified object is a key in this table. * * @param key possible key * @return true if and only if the specified object is a key in * this table, as determined by the equals method; * false otherwise. * @throws NullPointerException if the specified key is null */ @Override public boolean containsKey(Object key) { int hash = hashOf(key); return segmentFor(hash).containsKey(key, hash); } /** * Returns true if this map maps one or more keys to the specified * value. Note: This method requires a full internal traversal of the hash * table, and so is much slower than method containsKey. * * @param value value whose presence in this map is to be tested * @return true if this map maps one or more keys to the specified * value * @throws NullPointerException if the specified value is null */ @Override public boolean containsValue(Object value) { if (value == null) { throw new NullPointerException(); } // See explanation of modCount use above final Segment[] segments = this.segments; int[] mc = new int[segments.length]; // Try a few times without locking for (int k = 0; k < RETRIES_BEFORE_LOCK; ++ k) { int mcsum = 0; for (int i = 0; i < segments.length; ++ i) { mcsum += mc[i] = segments[i].modCount; if (segments[i].containsValue(value)) { return true; } } boolean cleanSweep = true; if (mcsum != 0) { for (int i = 0; i < segments.length; ++ i) { if (mc[i] != segments[i].modCount) { cleanSweep = false; break; } } } if (cleanSweep) { return false; } } // Resort to locking all segments for (Segment segment: segments) { segment.lock(); } boolean found = false; try { for (Segment segment: segments) { if (segment.containsValue(value)) { found = true; break; } } } finally { for (Segment segment: segments) { segment.unlock(); } } return found; } /** * Legacy method testing if some key maps into the specified value in this * table. This method is identical in functionality to * {@link #containsValue}, and exists solely to ensure full compatibility * with class {@link Hashtable}, which supported this method prior to * introduction of the Java Collections framework. * * @param value a value to search for * @return true if and only if some key maps to the value * argument in this table as determined by the equals * method; false otherwise * @throws NullPointerException if the specified value is null */ public boolean contains(Object value) { return containsValue(value); } /** * Maps the specified key to the specified value in this table. Neither the * key nor the value can be null. * *

The value can be retrieved by calling the get method with a * key that is equal to the original key. * * @param key key with which the specified value is to be associated * @param value value to be associated with the specified key * @return the previous value associated with key, or null * if there was no mapping for key * @throws NullPointerException if the specified key or value is null */ @Override public V put(K key, V value) { if (value == null) { throw new NullPointerException(); } int hash = hashOf(key); return segmentFor(hash).put(key, hash, value, false); } /** * @return the previous value associated with the specified key, or * null if there was no mapping for the key * @throws NullPointerException if the specified key or value is null */ public V putIfAbsent(K key, V value) { if (value == null) { throw new NullPointerException(); } int hash = hashOf(key); return segmentFor(hash).put(key, hash, value, true); } /** * Copies all of the mappings from the specified map to this one. These * mappings replace any mappings that this map had for any of the keys * currently in the specified map. * * @param m mappings to be stored in this map */ @Override public void putAll(Map m) { for (Map.Entry e: m.entrySet()) { put(e.getKey(), e.getValue()); } } /** * Removes the key (and its corresponding value) from this map. This method * does nothing if the key is not in the map. * * @param key the key that needs to be removed * @return the previous value associated with key, or null * if there was no mapping for key * @throws NullPointerException if the specified key is null */ @Override public V remove(Object key) { int hash = hashOf(key); return segmentFor(hash).remove(key, hash, null, false); } /** * @throws NullPointerException if the specified key is null */ public boolean remove(Object key, Object value) { int hash = hashOf(key); if (value == null) { return false; } return segmentFor(hash).remove(key, hash, value, false) != null; } /** * @throws NullPointerException if any of the arguments are null */ public boolean replace(K key, V oldValue, V newValue) { if (oldValue == null || newValue == null) { throw new NullPointerException(); } int hash = hashOf(key); return segmentFor(hash).replace(key, hash, oldValue, newValue); } /** * @return the previous value associated with the specified key, or * null if there was no mapping for the key * @throws NullPointerException if the specified key or value is null */ public V replace(K key, V value) { if (value == null) { throw new NullPointerException(); } int hash = hashOf(key); return segmentFor(hash).replace(key, hash, value); } /** * Removes all of the mappings from this map. */ @Override public void clear() { for (Segment segment: segments) { segment.clear(); } } /** * Removes any stale entries whose keys have been finalized. Use of this * method is normally not necessary since stale entries are automatically * removed lazily, when blocking operations are required. However, there are * some cases where this operation should be performed eagerly, such as * cleaning up old references to a ClassLoader in a multi-classloader * environment. * * Note: this method will acquire locks, one at a time, across all segments * of this table, so if it is to be used, it should be used sparingly. */ public void purgeStaleEntries() { for (Segment segment: segments) { segment.removeStale(); } } /** * Returns a {@link Set} view of the keys contained in this map. The set is * backed by the map, so changes to the map are reflected in the set, and * vice-versa. The set supports element removal, which removes the * corresponding mapping from this map, via the Iterator.remove, * Set.remove, removeAll, retainAll, and * clear operations. It does not support the add or * addAll operations. * *

The view's iterator is a "weakly consistent" iterator that * will never throw {@link ConcurrentModificationException}, and guarantees * to traverse elements as they existed upon construction of the iterator, * and may (but is not guaranteed to) reflect any modifications subsequent * to construction. */ @Override public Set keySet() { Set ks = keySet; return ks != null? ks : (keySet = new KeySet()); } /** * Returns a {@link Collection} view of the values contained in this map. * The collection is backed by the map, so changes to the map are reflected * in the collection, and vice-versa. The collection supports element * removal, which removes the corresponding mapping from this map, via the * Iterator.remove, Collection.remove, removeAll, * retainAll, and clear operations. It does not support * the add or addAll operations. * *

The view's iterator is a "weakly consistent" iterator that * will never throw {@link ConcurrentModificationException}, and guarantees * to traverse elements as they existed upon construction of the iterator, * and may (but is not guaranteed to) reflect any modifications subsequent * to construction. */ @Override public Collection values() { Collection vs = values; return vs != null? vs : (values = new Values()); } /** * Returns a {@link Set} view of the mappings contained in this map. * The set is backed by the map, so changes to the map are reflected in the * set, and vice-versa. The set supports element removal, which removes the * corresponding mapping from the map, via the Iterator.remove, * Set.remove, removeAll, retainAll, and * clear operations. It does not support the add or * addAll operations. * *

The view's iterator is a "weakly consistent" iterator that * will never throw {@link ConcurrentModificationException}, and guarantees * to traverse elements as they existed upon construction of the iterator, * and may (but is not guaranteed to) reflect any modifications subsequent * to construction. */ @Override public Set> entrySet() { Set> es = entrySet; return es != null? es : (entrySet = new EntrySet()); } /** * Returns an enumeration of the keys in this table. * * @return an enumeration of the keys in this table * @see #keySet() */ public Enumeration keys() { return new KeyIterator(); } /** * Returns an enumeration of the values in this table. * * @return an enumeration of the values in this table * @see #values() */ public Enumeration elements() { return new ValueIterator(); } /* ---------------- Iterator Support -------------- */ abstract class HashIterator { int nextSegmentIndex; int nextTableIndex; HashEntry[] currentTable; HashEntry nextEntry; HashEntry lastReturned; K currentKey; // Strong reference to weak key (prevents gc) HashIterator() { nextSegmentIndex = segments.length - 1; nextTableIndex = -1; advance(); } public void rewind() { nextSegmentIndex = segments.length - 1; nextTableIndex = -1; currentTable = null; nextEntry = null; lastReturned = null; currentKey = null; advance(); } public boolean hasMoreElements() { return hasNext(); } final void advance() { if (nextEntry != null && (nextEntry = nextEntry.next) != null) { return; } while (nextTableIndex >= 0) { if ((nextEntry = currentTable[nextTableIndex --]) != null) { return; } } while (nextSegmentIndex >= 0) { Segment seg = segments[nextSegmentIndex --]; if (seg.count != 0) { currentTable = seg.table; for (int j = currentTable.length - 1; j >= 0; -- j) { if ((nextEntry = currentTable[j]) != null) { nextTableIndex = j - 1; return; } } } } } public boolean hasNext() { while (nextEntry != null) { if (nextEntry.key() != null) { return true; } advance(); } return false; } HashEntry nextEntry() { do { if (nextEntry == null) { throw new NoSuchElementException(); } lastReturned = nextEntry; currentKey = lastReturned.key(); advance(); } while (currentKey == null); // Skip GC'd keys return lastReturned; } public void remove() { if (lastReturned == null) { throw new IllegalStateException(); } ConcurrentWeakKeyHashMap.this.remove(currentKey); lastReturned = null; } } final class KeyIterator extends HashIterator implements ReusableIterator, Enumeration { public K next() { return nextEntry().key(); } public K nextElement() { return nextEntry().key(); } } final class ValueIterator extends HashIterator implements ReusableIterator, Enumeration { public V next() { return nextEntry().value(); } public V nextElement() { return nextEntry().value(); } } /* * This class is needed for JDK5 compatibility. */ static class SimpleEntry implements Entry { private final K key; private V value; public SimpleEntry(K key, V value) { this.key = key; this.value = value; } public SimpleEntry(Entry entry) { key = entry.getKey(); value = entry.getValue(); } public K getKey() { return key; } public V getValue() { return value; } public V setValue(V value) { V oldValue = this.value; this.value = value; return oldValue; } @Override public boolean equals(Object o) { if (!(o instanceof Map.Entry)) { return false; } @SuppressWarnings("rawtypes") Map.Entry e = (Map.Entry) o; return eq(key, e.getKey()) && eq(value, e.getValue()); } @Override public int hashCode() { return (key == null? 0 : key.hashCode()) ^ (value == null? 0 : value.hashCode()); } @Override public String toString() { return key + "=" + value; } private static boolean eq(Object o1, Object o2) { return o1 == null? o2 == null : o1.equals(o2); } } /** * Custom Entry class used by EntryIterator.next(), that relays setValue * changes to the underlying map. */ final class WriteThroughEntry extends SimpleEntry { WriteThroughEntry(K k, V v) { super(k, v); } /** * Set our entry's value and write through to the map. The value to * return is somewhat arbitrary here. Since a WriteThroughEntry does not * necessarily track asynchronous changes, the most recent "previous" * value could be different from what we return (or could even have been * removed in which case the put will re-establish). We do not and can * not guarantee more. */ @Override public V setValue(V value) { if (value == null) { throw new NullPointerException(); } V v = super.setValue(value); put(getKey(), value); return v; } } final class EntryIterator extends HashIterator implements ReusableIterator> { public Map.Entry next() { HashEntry e = nextEntry(); return new WriteThroughEntry(e.key(), e.value()); } } final class KeySet extends AbstractSet { @Override public Iterator iterator() { return new KeyIterator(); } @Override public int size() { return ConcurrentWeakKeyHashMap.this.size(); } @Override public boolean isEmpty() { return ConcurrentWeakKeyHashMap.this.isEmpty(); } @Override public boolean contains(Object o) { return containsKey(o); } @Override public boolean remove(Object o) { return ConcurrentWeakKeyHashMap.this.remove(o) != null; } @Override public void clear() { ConcurrentWeakKeyHashMap.this.clear(); } } final class Values extends AbstractCollection { @Override public Iterator iterator() { return new ValueIterator(); } @Override public int size() { return ConcurrentWeakKeyHashMap.this.size(); } @Override public boolean isEmpty() { return ConcurrentWeakKeyHashMap.this.isEmpty(); } @Override public boolean contains(Object o) { return containsValue(o); } @Override public void clear() { ConcurrentWeakKeyHashMap.this.clear(); } } final class EntrySet extends AbstractSet> { @Override public Iterator> iterator() { return new EntryIterator(); } @Override public boolean contains(Object o) { if (!(o instanceof Map.Entry)) { return false; } Map.Entry e = (Map.Entry) o; V v = get(e.getKey()); return v != null && v.equals(e.getValue()); } @Override public boolean remove(Object o) { if (!(o instanceof Map.Entry)) { return false; } Map.Entry e = (Map.Entry) o; return ConcurrentWeakKeyHashMap.this.remove(e.getKey(), e.getValue()); } @Override public int size() { return ConcurrentWeakKeyHashMap.this.size(); } @Override public boolean isEmpty() { return ConcurrentWeakKeyHashMap.this.isEmpty(); } @Override public void clear() { ConcurrentWeakKeyHashMap.this.clear(); } } } ================================================ FILE: common/src/main/java/com/taobao/arthas/common/concurrent/ReusableIterator.java ================================================ /* * Copyright 2012 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package com.taobao.arthas.common.concurrent; import java.util.Iterator; public interface ReusableIterator extends Iterator { void rewind(); } ================================================ FILE: core/pom.xml ================================================ 4.0.0 com.taobao.arthas arthas-all ${revision} ../pom.xml arthas-core arthas-core https://github.com/alibaba/arthas com.alibaba.arthas.deps arthas-core org.apache.maven.plugins maven-shade-plugin 3.6.0 package shade arthas-core-shade com.taobao.arthas.core.Arthas core engine team, middleware group, alibaba inc. ${project.version} com.taobao.arthas ${project.version} arthas-core org.slf4j ${arthas.deps.package}.org.slf4j ch.qos.logback ${arthas.deps.package}.ch.qos.logback io.netty ${arthas.deps.package}.io.netty com.alibaba.fastjson2 ${arthas.deps.package}.com.alibaba.fastjson2 com.alibaba.middleware:termd-core io/termd/core/http/*.js io/termd/core/http/*.css io/termd/core/http/*.html io/termd/core/http/*.png maven-antrun-plugin package run com.taobao.arthas arthas-model ${project.version} com.taobao.arthas arthas-spy ${project.version} provided true com.taobao.arthas arthas-common ${project.version} com.taobao.arthas arthas-vmtool ${project.version} com.alibaba bytekit-core net.bytebuddy byte-buddy-agent provided true com.taobao.arthas arthas-memorycompiler ${project.version} com.taobao.arthas arthas-tunnel-client ${project.version} com.alibaba.middleware termd-core com.alibaba.middleware cli com.taobao.text text-ui com.fifesoft rsyntaxtextarea org.slf4j slf4j-api provided true ch.qos.logback logback-classic provided true ch.qos.logback logback-core provided true com.alibaba.arthas arthas-repackage-logger log4j log4j 1.2.17 provided true org.apache.logging.log4j log4j-core 2.12.4 provided true com.alibaba.fastjson2 fastjson2 ognl ognl org.junit.vintage junit-vintage-engine test org.junit.jupiter junit-jupiter test org.assertj assertj-core test org.mockito mockito-core test com.taobao.arthas math-game ${project.version} test org.zeroturnaround zt-zip test org.jboss.modules jboss-modules 1.11.0.Final test true org.benf cfr com.github.olivergondza maven-jdk-tools-wrapper 0.1 provided true com.taobao.arthas arthas-mcp-server ${project.version} ================================================ FILE: core/src/main/java/arthas.properties ================================================ #arthas.config.overrideAll=true arthas.telnetPort=3658 arthas.httpPort=8563 arthas.ip=127.0.0.1 # seconds arthas.sessionTimeout=1800 #arthas.enhanceLoaders=java.lang.ClassLoader # https://arthas.aliyun.com/doc/en/auth # arthas.username=arthas # arthas.password=arthas # local connection non auth, like telnet 127.0.0.1 3658 arthas.localConnectionNonAuth=true #arthas.appName=demoapp #arthas.tunnelServer=ws://127.0.0.1:7777/ws #arthas.agentId=mmmmmmyiddddd #arthas.disabledCommands=stop,dump #arthas.outputPath=arthas-output # MCP (Model Context Protocol) configuration arthas.mcpEndpoint=/mcp arthas.mcpProtocol=STREAMABLE ================================================ FILE: core/src/main/java/com/taobao/arthas/core/Arthas.java ================================================ package com.taobao.arthas.core; import com.sun.tools.attach.VirtualMachine; import com.sun.tools.attach.VirtualMachineDescriptor; import com.taobao.arthas.common.AnsiLog; import com.taobao.arthas.common.ArthasConstants; import com.taobao.arthas.common.JavaVersionUtils; import com.taobao.arthas.core.config.Configure; import com.taobao.middleware.cli.CLI; import com.taobao.middleware.cli.CLIs; import com.taobao.middleware.cli.CommandLine; import com.taobao.middleware.cli.Option; import com.taobao.middleware.cli.TypedOption; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.util.Arrays; import java.util.Properties; /** * Arthas启动器 */ public class Arthas { private Arthas(String[] args) throws Exception { attachAgent(parse(args)); } private Configure parse(String[] args) { Option pid = new TypedOption().setType(Long.class).setShortName("pid").setRequired(true); Option core = new TypedOption().setType(String.class).setShortName("core").setRequired(true); Option agent = new TypedOption().setType(String.class).setShortName("agent").setRequired(true); Option target = new TypedOption().setType(String.class).setShortName("target-ip"); Option telnetPort = new TypedOption().setType(Integer.class) .setShortName("telnet-port"); Option httpPort = new TypedOption().setType(Integer.class) .setShortName("http-port"); Option sessionTimeout = new TypedOption().setType(Integer.class) .setShortName("session-timeout"); Option username = new TypedOption().setType(String.class).setShortName("username"); Option password = new TypedOption().setType(String.class).setShortName("password"); Option tunnelServer = new TypedOption().setType(String.class).setShortName("tunnel-server"); Option agentId = new TypedOption().setType(String.class).setShortName("agent-id"); Option appName = new TypedOption().setType(String.class).setShortName(ArthasConstants.APP_NAME); Option statUrl = new TypedOption().setType(String.class).setShortName("stat-url"); Option disabledCommands = new TypedOption().setType(String.class).setShortName("disabled-commands"); CLI cli = CLIs.create("arthas").addOption(pid).addOption(core).addOption(agent).addOption(target) .addOption(telnetPort).addOption(httpPort).addOption(sessionTimeout) .addOption(username).addOption(password) .addOption(tunnelServer).addOption(agentId).addOption(appName).addOption(statUrl).addOption(disabledCommands); CommandLine commandLine = cli.parse(Arrays.asList(args)); Configure configure = new Configure(); configure.setJavaPid((Long) commandLine.getOptionValue("pid")); configure.setArthasAgent((String) commandLine.getOptionValue("agent")); configure.setArthasCore((String) commandLine.getOptionValue("core")); if (commandLine.getOptionValue("session-timeout") != null) { configure.setSessionTimeout((Integer) commandLine.getOptionValue("session-timeout")); } if (commandLine.getOptionValue("target-ip") != null) { configure.setIp((String) commandLine.getOptionValue("target-ip")); } if (commandLine.getOptionValue("telnet-port") != null) { configure.setTelnetPort((Integer) commandLine.getOptionValue("telnet-port")); } if (commandLine.getOptionValue("http-port") != null) { configure.setHttpPort((Integer) commandLine.getOptionValue("http-port")); } configure.setUsername((String) commandLine.getOptionValue("username")); configure.setPassword((String) commandLine.getOptionValue("password")); configure.setTunnelServer((String) commandLine.getOptionValue("tunnel-server")); configure.setAgentId((String) commandLine.getOptionValue("agent-id")); configure.setStatUrl((String) commandLine.getOptionValue("stat-url")); configure.setDisabledCommands((String) commandLine.getOptionValue("disabled-commands")); configure.setAppName((String) commandLine.getOptionValue(ArthasConstants.APP_NAME)); return configure; } private void attachAgent(Configure configure) throws Exception { VirtualMachineDescriptor virtualMachineDescriptor = null; for (VirtualMachineDescriptor descriptor : VirtualMachine.list()) { String pid = descriptor.id(); if (pid.equals(Long.toString(configure.getJavaPid()))) { virtualMachineDescriptor = descriptor; break; } } VirtualMachine virtualMachine = null; try { if (null == virtualMachineDescriptor) { // 使用 attach(String pid) 这种方式 virtualMachine = VirtualMachine.attach("" + configure.getJavaPid()); } else { virtualMachine = VirtualMachine.attach(virtualMachineDescriptor); } Properties targetSystemProperties = virtualMachine.getSystemProperties(); String targetJavaVersion = JavaVersionUtils.javaVersionStr(targetSystemProperties); String currentJavaVersion = JavaVersionUtils.javaVersionStr(); if (targetJavaVersion != null && currentJavaVersion != null) { if (!targetJavaVersion.equals(currentJavaVersion)) { AnsiLog.warn("Current VM java version: {} do not match target VM java version: {}, attach may fail.", currentJavaVersion, targetJavaVersion); AnsiLog.warn("Target VM JAVA_HOME is {}, arthas-boot JAVA_HOME is {}, try to set the same JAVA_HOME.", targetSystemProperties.getProperty("java.home"), System.getProperty("java.home")); } } String arthasAgentPath = configure.getArthasAgent(); //convert jar path to unicode string configure.setArthasAgent(encodeArg(arthasAgentPath)); configure.setArthasCore(encodeArg(configure.getArthasCore())); try { virtualMachine.loadAgent(arthasAgentPath, configure.getArthasCore() + ";" + configure.toString()); } catch (IOException e) { if (e.getMessage() != null && e.getMessage().contains("Non-numeric value found")) { AnsiLog.warn(e); AnsiLog.warn("It seems to use the lower version of JDK to attach the higher version of JDK."); AnsiLog.warn( "This error message can be ignored, the attach may have been successful, and it will still try to connect."); } else { throw e; } } catch (com.sun.tools.attach.AgentLoadException ex) { if ("0".equals(ex.getMessage())) { // https://stackoverflow.com/a/54454418 AnsiLog.warn(ex); AnsiLog.warn("It seems to use the higher version of JDK to attach the lower version of JDK."); AnsiLog.warn( "This error message can be ignored, the attach may have been successful, and it will still try to connect."); } else { throw ex; } } } finally { if (null != virtualMachine) { virtualMachine.detach(); } } } private static String encodeArg(String arg) { try { return URLEncoder.encode(arg, "utf-8"); } catch (UnsupportedEncodingException e) { return arg; } } public static void main(String[] args) { try { new Arthas(args); } catch (Throwable t) { AnsiLog.error("Start arthas failed, exception stack trace: "); t.printStackTrace(); System.exit(-1); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/GlobalOptions.java ================================================ package com.taobao.arthas.core; import java.lang.reflect.Field; import com.taobao.arthas.common.ArthasConstants; import com.taobao.arthas.common.JavaVersionUtils; import com.taobao.arthas.common.UnsafeUtils; import ognl.OgnlRuntime; /** * 全局开关 * Created by vlinux on 15/6/4. */ public class GlobalOptions { public static final String STRICT_MESSAGE = "By default, strict mode is true, " + "not allowed to set object properties. " + "Want to set object properties, execute `options strict false`"; /** * 是否支持系统类
* 这个开关打开之后将能代理到来自JVM的部分类，由于有非常强的安全风险可能会引起系统崩溃
* 所以这个开关默认是关闭的，除非你非常了解你要做什么，否则请不要打开 */ @Option(level = 0, name = "unsafe", summary = "Option to support system-level class", description = "This option enables to proxy functionality of JVM classes." + " Due to serious security risk a JVM crash is possibly be introduced." + " Do not activate it unless you are able to manage." ) public static volatile boolean isUnsafe = false; /** * 是否支持dump被增强的类
* 这个开关打开这后，每次增强类的时候都将会将增强的类dump到文件中，以便于进行反编译分析 */ @Option(level = 1, name = "dump", summary = "Option to dump the enhanced classes", description = "This option enables the enhanced classes to be dumped to external file " + "for further de-compilation and analysis." ) public static volatile boolean isDump = false; /** * 是否支持批量增强
* 这个开关打开后，每次均是批量增强类 */ @Option(level = 1, name = "batch-re-transform", summary = "Option to support batch reTransform Class", description = "This options enables to reTransform classes with batch mode." ) public static volatile boolean isBatchReTransform = true; /** * 是否支持json格式化输出
* 这个开关打开后，使用json格式输出目标对象，配合-x参数使用 */ @Option(level = 2, name = "json-format", summary = "Option to support JSON format of object output", description = "This option enables to format object output with JSON when -x option selected." ) public static volatile boolean isUsingJson = false; /** * ObjectView 输出大小限制（字节） */ @Option(level = 1, name = "object-size-limit", summary = "Option to control ObjectView output size limit", description = "Upper size limit in bytes for ObjectView output, must be greater than 0. Default value is 10 * 1024 * 1024." ) public static volatile int objectSizeLimit = ArthasConstants.MAX_HTTP_CONTENT_LENGTH; /** * 是否关闭子类 */ @Option( level = 1, name = "disable-sub-class", summary = "Option to control include sub class when class matching", description = "This option disable to include sub class when matching class." ) public static volatile boolean isDisableSubClass = false; /** * 是否在interface类里搜索函数 * https://github.com/alibaba/arthas/issues/1105 */ @Option( level = 1, name = "support-default-method", summary = "Option to control include default method in interface when class matching", description = "This option disable to include default method in interface when matching class." ) public static volatile boolean isSupportDefaultMethod = JavaVersionUtils.isGreaterThanJava7(); /** * 是否日志中保存命令执行结果 */ @Option(level = 1, name = "save-result", summary = "Option to print command's result to log file", description = "This option enables to save each command's result to log file, " + "which path is ${user.home}/logs/arthas-cache/result.log." ) public static volatile boolean isSaveResult = false; /** * job的超时时间 */ @Option(level = 2, name = "job-timeout", summary = "Option to job timeout", description = "This option setting job timeout,The unit can be d, h, m, s for day, hour, minute, second. " + "1d is one day in default" ) public static volatile String jobTimeout = "1d"; /** * 是否打印parent类里的field * @see com.taobao.arthas.core.view.ObjectView */ @Option(level = 1, name = "print-parent-fields", summary = "Option to print all fileds in parent class", description = "This option enables print files in parent class, default value true." ) public static volatile boolean printParentFields = true; /** * 是否打开verbose 开关 */ @Option(level = 1, name = "verbose", summary = "Option to print verbose information", description = "This option enables print verbose information, default value false." ) public static volatile boolean verbose = false; /** * 是否打开strict 开关。更新时注意 ognl 里的配置需要同步修改 * @see ognl.OgnlRuntime#getUseStricterInvocationValue() */ @Option(level = 1, name = "strict", summary = "Option to strict mode", description = STRICT_MESSAGE ) public static volatile boolean strict = true; public static void updateOnglStrict(boolean strict) { try { Field field = OgnlRuntime.class.getDeclaredField("_useStricterInvocation"); field.setAccessible(true); // 获取字段的内存偏移量和基址 Object staticFieldBase = UnsafeUtils.UNSAFE.staticFieldBase(field); long staticFieldOffset = UnsafeUtils.UNSAFE.staticFieldOffset(field); // 修改字段的值 UnsafeUtils.UNSAFE.putBoolean(staticFieldBase, staticFieldOffset, strict); } catch (NoSuchFieldException | SecurityException e) { // ignore } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/Option.java ================================================ package com.taobao.arthas.core; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; /** * Arthas全局选项 */ @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.FIELD) public @interface Option { /* * 选项级别，数字越小级别越高 */ int level(); /* * 选项名称 */ String name(); /* * 选项摘要说明 */ String summary(); /* * 命令描述 */ String description(); } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/AccessPoint.java ================================================ package com.taobao.arthas.core.advisor; public enum AccessPoint { ACCESS_BEFORE(1, "AtEnter"), ACCESS_AFTER_RETUNING(1 << 1, "AtExit"), ACCESS_AFTER_THROWING(1 << 2, "AtExceptionExit"); private int value; private String key; public int getValue() { return value; } public String getKey() { return key; } AccessPoint(int value, String key) { this.value = value; this.key = key; } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/Advice.java ================================================ package com.taobao.arthas.core.advisor; /** * 通知点 Created by vlinux on 15/5/20. */ public class Advice { private final ClassLoader loader; private final Class clazz; private final ArthasMethod method; private final Object target; private final Object[] params; private final Object returnObj; private final Throwable throwExp; private final boolean isBefore; private final boolean isThrow; private final boolean isReturn; public boolean isBefore() { return isBefore; } public boolean isAfterReturning() { return isReturn; } public boolean isAfterThrowing() { return isThrow; } public ClassLoader getLoader() { return loader; } public Object getTarget() { return target; } public Object[] getParams() { return params; } public Object getReturnObj() { return returnObj; } public Throwable getThrowExp() { return throwExp; } public Class getClazz() { return clazz; } public ArthasMethod getMethod() { return method; } /** * for finish * * @param loader 类加载器 * @param clazz 类 * @param method 方法 * @param target 目标类 * @param params 调用参数 * @param returnObj 返回值 * @param throwExp 抛出异常 * @param access 进入场景 */ private Advice( ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] params, Object returnObj, Throwable throwExp, int access) { this.loader = loader; this.clazz = clazz; this.method = method; this.target = target; this.params = params; this.returnObj = returnObj; this.throwExp = throwExp; isBefore = (access & AccessPoint.ACCESS_BEFORE.getValue()) == AccessPoint.ACCESS_BEFORE.getValue(); isThrow = (access & AccessPoint.ACCESS_AFTER_THROWING.getValue()) == AccessPoint.ACCESS_AFTER_THROWING.getValue(); isReturn = (access & AccessPoint.ACCESS_AFTER_RETUNING.getValue()) == AccessPoint.ACCESS_AFTER_RETUNING.getValue(); } public static Advice newForBefore(ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] params) { return new Advice( loader, clazz, method, target, params, null, //returnObj null, //throwExp AccessPoint.ACCESS_BEFORE.getValue() ); } public static Advice newForAfterReturning(ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] params, Object returnObj) { return new Advice( loader, clazz, method, target, params, returnObj, null, //throwExp AccessPoint.ACCESS_AFTER_RETUNING.getValue() ); } public static Advice newForAfterThrowing(ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] params, Throwable throwExp) { return new Advice( loader, clazz, method, target, params, null, //returnObj throwExp, AccessPoint.ACCESS_AFTER_THROWING.getValue() ); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/AdviceListener.java ================================================ package com.taobao.arthas.core.advisor; /** * 通知监听器
* Created by vlinux on 15/5/17. */ public interface AdviceListener { long id(); /** * 监听器创建
* 监听器被注册时触发 */ void create(); /** * 监听器销毁
* 监听器被销毁时触发 */ void destroy(); /** * 前置通知 * * @param clazz 类 * @param methodName 方法名 * @param methodDesc 方法描述 * @param target 目标类实例 * 若目标为静态方法,则为null * @param args 参数列表 * @throws Throwable 通知过程出错 */ void before( Class clazz, String methodName, String methodDesc, Object target, Object[] args) throws Throwable; /** * 返回通知 * * @param clazz 类 * @param methodName 方法名 * @param methodDesc 方法描述 * @param target 目标类实例 * 若目标为静态方法,则为null * @param args 参数列表 * @param returnObject 返回结果 * 若为无返回值方法(void),则为null * @throws Throwable 通知过程出错 */ void afterReturning( Class clazz, String methodName, String methodDesc, Object target, Object[] args, Object returnObject) throws Throwable; /** * 异常通知 * * @param clazz 类 * @param methodName 方法名 * @param methodDesc 方法描述 * @param target 目标类实例 * 若目标为静态方法,则为null * @param args 参数列表 * @param throwable 目标异常 * @throws Throwable 通知过程出错 */ void afterThrowing( Class clazz, String methodName, String methodDesc, Object target, Object[] args, Throwable throwable) throws Throwable; } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/AdviceListenerAdapter.java ================================================ package com.taobao.arthas.core.advisor; import java.util.concurrent.atomic.AtomicLong; import com.taobao.arthas.core.command.express.ExpressException; import com.taobao.arthas.core.command.express.ExpressFactory; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.arthas.core.shell.system.Process; import com.taobao.arthas.core.shell.system.ProcessAware; import com.taobao.arthas.core.util.Constants; import com.taobao.arthas.core.util.StringUtils; /** * * @author hengyunabc 2020-05-20 * */ public abstract class AdviceListenerAdapter implements AdviceListener, ProcessAware { private static final AtomicLong ID_GENERATOR = new AtomicLong(0); private Process process; private long id = ID_GENERATOR.addAndGet(1); private boolean verbose; @Override public long id() { return id; } @Override public void create() { // default no-op } @Override public void destroy() { // default no-op } public Process getProcess() { return process; } public void setProcess(Process process) { this.process = process; } @Override final public void before(Class clazz, String methodName, String methodDesc, Object target, Object[] args) throws Throwable { before(clazz.getClassLoader(), clazz, new ArthasMethod(clazz, methodName, methodDesc), target, args); } @Override final public void afterReturning(Class clazz, String methodName, String methodDesc, Object target, Object[] args, Object returnObject) throws Throwable { afterReturning(clazz.getClassLoader(), clazz, new ArthasMethod(clazz, methodName, methodDesc), target, args, returnObject); } @Override final public void afterThrowing(Class clazz, String methodName, String methodDesc, Object target, Object[] args, Throwable throwable) throws Throwable { afterThrowing(clazz.getClassLoader(), clazz, new ArthasMethod(clazz, methodName, methodDesc), target, args, throwable); } /** * 前置通知 * * @param loader 类加载器 * @param clazz 类 * @param method 方法 * @param target 目标类实例 若目标为静态方法,则为null * @param args 参数列表 * @throws Throwable 通知过程出错 */ public abstract void before(ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] args) throws Throwable; /** * 返回通知 * * @param loader 类加载器 * @param clazz 类 * @param method 方法 * @param target 目标类实例 若目标为静态方法,则为null * @param args 参数列表 * @param returnObject 返回结果 若为无返回值方法(void),则为null * @throws Throwable 通知过程出错 */ public abstract void afterReturning(ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] args, Object returnObject) throws Throwable; /** * 异常通知 * * @param loader 类加载器 * @param clazz 类 * @param method 方法 * @param target 目标类实例 若目标为静态方法,则为null * @param args 参数列表 * @param throwable 目标异常 * @throws Throwable 通知过程出错 */ public abstract void afterThrowing(ClassLoader loader, Class clazz, ArthasMethod method, Object target, Object[] args, Throwable throwable) throws Throwable; /** * 判断条件是否满足，满足的情况下需要输出结果 * * @param conditionExpress 条件表达式 * @param advice 当前的advice对象 * @param cost 本次执行的耗时 * @return true 如果条件表达式满足 */ protected boolean isConditionMet(String conditionExpress, Advice advice, double cost) throws ExpressException { return StringUtils.isEmpty(conditionExpress) || ExpressFactory.threadLocalExpress(advice).bind(Constants.COST_VARIABLE, cost).is(conditionExpress); } protected Object getExpressionResult(String express, Advice advice, double cost) throws ExpressException { return ExpressFactory.threadLocalExpress(advice).bind(Constants.COST_VARIABLE, cost).get(express); } /** * 是否超过了上限，超过之后，停止输出 * * @param limit 命令执行上限 * @param currentTimes 当前执行次数 * @return true 如果超过或者达到了上限 */ protected boolean isLimitExceeded(int limit, int currentTimes) { return currentTimes >= limit; } /** * 超过次数上限，则不再输出，命令终止 * * @param process the process to be aborted * @param limit the limit to be printed */ protected void abortProcess(CommandProcess process, int limit) { process.write("Command execution times exceed limit: " + limit + ", so command will exit. You can set it with -n option.\n"); process.end(); } public boolean isVerbose() { return verbose; } public void setVerbose(boolean verbose) { this.verbose = verbose; } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/AdviceListenerManager.java ================================================ package com.taobao.arthas.core.advisor; import java.util.ArrayList; import java.util.List; import java.util.Map.Entry; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.TimeUnit; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.taobao.arthas.common.concurrent.ConcurrentWeakKeyHashMap; import com.taobao.arthas.core.server.ArthasBootstrap; import com.taobao.arthas.core.shell.system.ExecStatus; import com.taobao.arthas.core.shell.system.Process; import com.taobao.arthas.core.shell.system.ProcessAware; /** * * TODO line 的记录 listener方式？ 还是有string为key，不过 classname|method|desc|num 这样子？ * 判断是否已插入了，可以在两行中间查询，有没有 SpyAPI 的invoke? * * TODO trace的怎么搞？ trace 只记录一次就可以了 classname|method|desc|trace ? 怎么避免 trace 到 * SPY的invoke ？直接忽略？ * * TODO trace命令可以动态的增加 新的函数进去不？只要关联上同一个 Listener应该是可以的。 * * TODO 在SPY里放很多的 Object数组，然后动态的设置进去？ 比如有新的 Listener来的时候。 这样子连查表都不用了。 甚至可以动态生成 * 存放这些 Listener数组的类？ 这样子的话，只要有 Binding那里，查询到一个具体分配好的类， 这样子就可以了？ * 甚至每个ClassLoader里都动态生成这样子的 存放类，那么这样子不可以避免查 ClassLoader了么？ * * 动态为每一个增强类，生成一个新的类，新的类里，有各种的 ID 数组，保存每一个类的每一种 trace 点的信息？？ * * 多个 watch命令 对同一个类，现在的逻辑是，每个watch都有一个自己的 TransForm，但不会重复增强，因为做了判断。 * watch命令停止时，也没有去掉增强的代码。 只有reset时 才会去掉。 * * 其实用户想查看局部变量，并不是想查看哪一行！ 而是想看某个函数里子调用时的 局部变量的值！ 所以实际上是想要一个新的命令，比如 watchinmethod * ， 可以 在某个子调用里， * * TODO 现在的trace 可以输出行号，可能不是很精确，但是可以对应上的。 这个在新的方式里怎么支持？ 增加一个 linenumber binding？ * 从mehtodNode，向上查找到最近的行号？ * * TODO 防止重复增强，最重要的应该还是动态增加 annotation，这个才是真正可以做到某一行，某一个子 invoke 都能识别出来的！ 无论是 * transform多少次！ 字节码怎么动态加 annotation ？ annotation里签名用 url ?的key/value方式表达！ * 这样子可以有效还原信息 * * TODO 是否考虑一个 trace /watch命令之后，得到一个具体的 Listener ID， 允许在另外的窗口里，再次 * trace/watch时指定这个ID，就会查找到，并处理。 这样子的话，真正达到了动态灵活的，一层一层增加的trace ！ * * * @author hengyunabc 2020-04-24 * */ public class AdviceListenerManager { private static final Logger logger = LoggerFactory.getLogger(AdviceListenerManager.class); private static final FakeBootstrapClassLoader FAKEBOOTSTRAPCLASSLOADER = new FakeBootstrapClassLoader(); static { // 清理失效的 AdviceListener ArthasBootstrap.getInstance().getScheduledExecutorService().scheduleWithFixedDelay(new Runnable() { @Override public void run() { try { for (Entry entry : adviceListenerMap.entrySet()) { ClassLoaderAdviceListenerManager adviceListenerManager = entry.getValue(); synchronized (adviceListenerManager) { for (Entry> eee : adviceListenerManager.map.entrySet()) { List listeners = eee.getValue(); List newResult = new ArrayList(); for (AdviceListener listener : listeners) { if (listener instanceof ProcessAware) { ProcessAware processAware = (ProcessAware) listener; Process process = processAware.getProcess(); if (process == null) { continue; } ExecStatus status = process.status(); if (!status.equals(ExecStatus.TERMINATED)) { newResult.add(listener); } } } if (newResult.size() != listeners.size()) { adviceListenerManager.map.put(eee.getKey(), newResult); } } } } } catch (Throwable e) { try { logger.error("clean AdviceListener error", e); } catch (Throwable t) { // ignore } } } }, 3, 3, TimeUnit.SECONDS); } private static final ConcurrentWeakKeyHashMap adviceListenerMap = new ConcurrentWeakKeyHashMap(); static class ClassLoaderAdviceListenerManager { private ConcurrentHashMap> map = new ConcurrentHashMap>(); private String key(String className, String methodName, String methodDesc) { return className + methodName + methodDesc; } private String keyForTrace(String className, String owner, String methodName, String methodDesc) { return className + owner + methodName + methodDesc; } public void registerAdviceListener(String className, String methodName, String methodDesc, AdviceListener listener) { synchronized (this) { className = className.replace('/', '.'); String key = key(className, methodName, methodDesc); List listeners = map.get(key); if (listeners == null) { listeners = new ArrayList(); map.put(key, listeners); } if (!listeners.contains(listener)) { listeners.add(listener); } } } public List queryAdviceListeners(String className, String methodName, String methodDesc) { className = className.replace('/', '.'); String key = key(className, methodName, methodDesc); List listeners = map.get(key); return listeners; } public void registerTraceAdviceListener(String className, String owner, String methodName, String methodDesc, AdviceListener listener) { synchronized (this) { className = className.replace('/', '.'); String key = keyForTrace(className, owner, methodName, methodDesc); List listeners = map.get(key); if (listeners == null) { listeners = new ArrayList(); map.put(key, listeners); } if (!listeners.contains(listener)) { listeners.add(listener); } } } public List queryTraceAdviceListeners(String className, String owner, String methodName, String methodDesc) { className = className.replace('/', '.'); String key = keyForTrace(className, owner, methodName, methodDesc); List listeners = map.get(key); return listeners; } } public static void registerAdviceListener(ClassLoader classLoader, String className, String methodName, String methodDesc, AdviceListener listener) { classLoader = wrap(classLoader); className = className.replace('/', '.'); logger.info("registerAdviceListener: classLoader={}, className={}, methodName={}, methodDesc={}, listener={}", classLoader, className, methodName, methodDesc, listener.id()); ClassLoaderAdviceListenerManager manager = adviceListenerMap.get(classLoader); if (manager == null) { manager = new ClassLoaderAdviceListenerManager(); adviceListenerMap.put(classLoader, manager); } manager.registerAdviceListener(className, methodName, methodDesc, listener); } public static void updateAdviceListeners() { } public static List queryAdviceListeners(ClassLoader classLoader, String className, String methodName, String methodDesc) { classLoader = wrap(classLoader); className = className.replace('/', '.'); ClassLoaderAdviceListenerManager manager = adviceListenerMap.get(classLoader); if (manager != null) { return manager.queryAdviceListeners(className, methodName, methodDesc); } return null; } public static void registerTraceAdviceListener(ClassLoader classLoader, String className, String owner, String methodName, String methodDesc, AdviceListener listener) { classLoader = wrap(classLoader); className = className.replace('/', '.'); ClassLoaderAdviceListenerManager manager = adviceListenerMap.get(classLoader); if (manager == null) { manager = new ClassLoaderAdviceListenerManager(); adviceListenerMap.put(classLoader, manager); } manager.registerTraceAdviceListener(className, owner, methodName, methodDesc, listener); } public static List queryTraceAdviceListeners(ClassLoader classLoader, String className, String owner, String methodName, String methodDesc) { classLoader = wrap(classLoader); className = className.replace('/', '.'); ClassLoaderAdviceListenerManager manager = adviceListenerMap.get(classLoader); if (manager != null) { return manager.queryTraceAdviceListeners(className, owner, methodName, methodDesc); } return null; } private static ClassLoader wrap(ClassLoader classLoader) { if (classLoader != null) { return classLoader; } return FAKEBOOTSTRAPCLASSLOADER; } private static class FakeBootstrapClassLoader extends ClassLoader { } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/AdviceWeaver.java ================================================ package com.taobao.arthas.core.advisor; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; /** * 通知编织者
*

*

线程帧栈与执行帧栈

* 编织者在执行通知的时候有两个重要的栈:线程帧栈(threadFrameStack),执行帧栈(frameStack) *

* Created by vlinux on 15/5/17. */ public class AdviceWeaver { private static final Logger logger = LoggerFactory.getLogger(AdviceWeaver.class); // 通知监听器集合 private final static Map advices = new ConcurrentHashMap(); /** * 注册监听器 * * @param listener 通知监听器 */ public static void reg(AdviceListener listener) { // 触发监听器创建 listener.create(); // 注册监听器 advices.put(listener.id(), listener); } /** * 注销监听器 * * @param listener 通知监听器 */ public static void unReg(AdviceListener listener) { if (null != listener) { // 注销监听器 advices.remove(listener.id()); // 触发监听器销毁 listener.destroy(); } } public static AdviceListener listener(long id) { return advices.get(id); } /** * 恢复监听 * * @param listener 通知监听器 */ public static void resume(AdviceListener listener) { // 注册监听器 advices.put(listener.id(), listener); } /** * 暂停监听 * * @param adviceId 通知ID */ public static AdviceListener suspend(long adviceId) { // 注销监听器 return advices.remove(adviceId); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/ArthasMethod.java ================================================ package com.taobao.arthas.core.advisor; import java.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import com.alibaba.deps.org.objectweb.asm.Type; import com.taobao.arthas.core.util.StringUtils; /** * * 主要用于 tt 命令重放使用 * * @author vlinux on 15/5/24 * @author hengyunabc 2020-05-20 * */ public class ArthasMethod { private final Class clazz; private final String methodName; private final String methodDesc; private Constructor constructor; private Method method; private void initMethod() { if (constructor != null || method != null) { return; } try { ClassLoader loader = this.clazz.getClassLoader(); final Type asmType = Type.getMethodType(methodDesc); // to arg types final Class[] argsClasses = new Class[asmType.getArgumentTypes().length]; for (int index = 0; index < argsClasses.length; index++) { // asm class descriptor to jvm class final Class argumentClass; final Type argumentAsmType = asmType.getArgumentTypes()[index]; switch (argumentAsmType.getSort()) { case Type.BOOLEAN: { argumentClass = boolean.class; break; } case Type.CHAR: { argumentClass = char.class; break; } case Type.BYTE: { argumentClass = byte.class; break; } case Type.SHORT: { argumentClass = short.class; break; } case Type.INT: { argumentClass = int.class; break; } case Type.FLOAT: { argumentClass = float.class; break; } case Type.LONG: { argumentClass = long.class; break; } case Type.DOUBLE: { argumentClass = double.class; break; } case Type.ARRAY: { argumentClass = toClass(loader, argumentAsmType.getInternalName()); break; } case Type.VOID: { argumentClass = void.class; break; } case Type.OBJECT: case Type.METHOD: default: { argumentClass = toClass(loader, argumentAsmType.getClassName()); break; } } argsClasses[index] = argumentClass; } if ("".equals(this.methodName)) { this.constructor = clazz.getDeclaredConstructor(argsClasses); } else { this.method = clazz.getDeclaredMethod(methodName, argsClasses); } } catch (Throwable e) { throw new RuntimeException(e); } } private Class toClass(ClassLoader loader, String className) throws ClassNotFoundException { return Class.forName(StringUtils.normalizeClassName(className), true, toClassLoader(loader)); } private ClassLoader toClassLoader(ClassLoader loader) { return null != loader ? loader : ArthasMethod.class.getClassLoader(); } /** * 获取方法名称 * * @return 返回方法名称 */ public String getName() { return this.methodName; } @Override public String toString() { initMethod(); if (constructor != null) { return constructor.toString(); } else if (method != null) { return method.toString(); } return "ERROR_METHOD"; } public boolean isAccessible() { initMethod(); if (this.method != null) { return method.isAccessible(); } else if (this.constructor != null) { return constructor.isAccessible(); } return false; } public void setAccessible(boolean accessFlag) { initMethod(); if (constructor != null) { constructor.setAccessible(accessFlag); } else if (method != null) { method.setAccessible(accessFlag); } } public Object invoke(Object target, Object... args) throws IllegalAccessException, InvocationTargetException, InstantiationException { initMethod(); if (method != null) { return method.invoke(target, args); } else if (this.constructor != null) { return constructor.newInstance(args); } return null; } public ArthasMethod(Class clazz, String methodName, String methodDesc) { this.clazz = clazz; this.methodName = methodName; this.methodDesc = methodDesc; } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/Enhancer.java ================================================ package com.taobao.arthas.core.advisor; import static com.taobao.arthas.core.util.ArthasCheckUtils.isEquals; import static java.lang.System.arraycopy; import java.arthas.SpyAPI; import java.io.File; import java.io.IOException; import java.lang.instrument.ClassFileTransformer; import java.lang.instrument.IllegalClassFormatException; import java.lang.instrument.Instrumentation; import java.lang.instrument.UnmodifiableClassException; import java.lang.reflect.Method; import java.security.ProtectionDomain; import java.util.ArrayList; import java.util.Arrays; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import java.util.WeakHashMap; import com.alibaba.deps.org.objectweb.asm.ClassReader; import com.alibaba.deps.org.objectweb.asm.Opcodes; import com.alibaba.deps.org.objectweb.asm.Type; import com.alibaba.deps.org.objectweb.asm.tree.AbstractInsnNode; import com.alibaba.deps.org.objectweb.asm.tree.ClassNode; import com.alibaba.deps.org.objectweb.asm.tree.MethodInsnNode; import com.alibaba.deps.org.objectweb.asm.tree.MethodNode; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.alibaba.bytekit.asm.MethodProcessor; import com.alibaba.bytekit.asm.interceptor.InterceptorProcessor; import com.alibaba.bytekit.asm.interceptor.parser.DefaultInterceptorClassParser; import com.alibaba.bytekit.asm.location.Location; import com.alibaba.bytekit.asm.location.LocationType; import com.alibaba.bytekit.asm.location.MethodInsnNodeWare; import com.alibaba.bytekit.asm.location.filter.GroupLocationFilter; import com.alibaba.bytekit.asm.location.filter.InvokeCheckLocationFilter; import com.alibaba.bytekit.asm.location.filter.InvokeContainLocationFilter; import com.alibaba.bytekit.asm.location.filter.LocationFilter; import com.alibaba.bytekit.utils.AsmOpUtils; import com.alibaba.bytekit.utils.AsmUtils; import com.taobao.arthas.common.Pair; import com.taobao.arthas.core.GlobalOptions; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyInterceptor1; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyInterceptor2; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyInterceptor3; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyTraceExcludeJDKInterceptor1; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyTraceExcludeJDKInterceptor2; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyTraceExcludeJDKInterceptor3; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyTraceInterceptor1; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyTraceInterceptor2; import com.taobao.arthas.core.advisor.SpyInterceptors.SpyTraceInterceptor3; import com.taobao.arthas.core.server.ArthasBootstrap; import com.taobao.arthas.core.util.ArthasCheckUtils; import com.taobao.arthas.core.util.ClassUtils; import com.taobao.arthas.core.util.FileUtils; import com.taobao.arthas.core.util.SearchUtils; import com.taobao.arthas.core.util.affect.EnhancerAffect; import com.taobao.arthas.core.util.matcher.Matcher; /** * 对类进行通知增强 Created by vlinux on 15/5/17. * @author hengyunabc */ public class Enhancer implements ClassFileTransformer { private static final Logger logger = LoggerFactory.getLogger(Enhancer.class); private final AdviceListener listener; private final boolean isTracing; private final boolean skipJDKTrace; private final Matcher classNameMatcher; private final Matcher classNameExcludeMatcher; private final Matcher methodNameMatcher; /** * 指定增强的 classloader hash，如果为空则不限制。 */ private final String targetClassLoaderHash; private final EnhancerAffect affect; private Set> matchingClasses = null; private boolean isLazy = false; private static final ClassLoader selfClassLoader = Enhancer.class.getClassLoader(); // 被增强的类的缓存 private final static Map/* Class */, Object> classBytesCache = new WeakHashMap, Object>(); private static SpyImpl spyImpl = new SpyImpl(); static { SpyAPI.setSpy(spyImpl); } /** * @param adviceId 通知编号 * @param isTracing 可跟踪方法调用 * @param skipJDKTrace 是否忽略对JDK内部方法的跟踪 * @param matchingClasses 匹配中的类 * @param methodNameMatcher 方法名匹配 * @param affect 影响统计 */ public Enhancer(AdviceListener listener, boolean isTracing, boolean skipJDKTrace, Matcher classNameMatcher, Matcher classNameExcludeMatcher, Matcher methodNameMatcher) { this(listener, isTracing, skipJDKTrace, classNameMatcher, classNameExcludeMatcher, methodNameMatcher, false, null); } /** * @param adviceId 通知编号 * @param isTracing 可跟踪方法调用 * @param skipJDKTrace 是否忽略对JDK内部方法的跟踪 * @param matchingClasses 匹配中的类 * @param methodNameMatcher 方法名匹配 * @param affect 影响统计 * @param isLazy 是否懒加载模式 */ public Enhancer(AdviceListener listener, boolean isTracing, boolean skipJDKTrace, Matcher classNameMatcher, Matcher classNameExcludeMatcher, Matcher methodNameMatcher, boolean isLazy) { this(listener, isTracing, skipJDKTrace, classNameMatcher, classNameExcludeMatcher, methodNameMatcher, isLazy, null); } public Enhancer(AdviceListener listener, boolean isTracing, boolean skipJDKTrace, Matcher classNameMatcher, Matcher classNameExcludeMatcher, Matcher methodNameMatcher, boolean isLazy, String targetClassLoaderHash) { this.listener = listener; this.isTracing = isTracing; this.skipJDKTrace = skipJDKTrace; this.classNameMatcher = classNameMatcher; this.classNameExcludeMatcher = classNameExcludeMatcher; this.methodNameMatcher = methodNameMatcher; this.targetClassLoaderHash = targetClassLoaderHash; this.affect = new EnhancerAffect(); affect.setListenerId(listener.id()); this.isLazy = isLazy; } @Override public byte[] transform(final ClassLoader inClassLoader, String className, Class classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException { try { // 检查classloader能否加载到 SpyAPI，如果不能，则放弃增强 try { if (inClassLoader != null) { inClassLoader.loadClass(SpyAPI.class.getName()); } } catch (Throwable e) { logger.error("the classloader can not load SpyAPI, ignore it. classloader: {}, className: {}", inClassLoader.getClass().getName(), className, e); return null; } // 这里要再次过滤一次，为啥？因为在transform的过程中，有可能还会再诞生新的类 // 所以需要将之前需要转换的类集合传递下来，再次进行判断 if (matchingClasses != null && !matchingClasses.contains(classBeingRedefined)) { // 懒加载模式：当类首次加载时（classBeingRedefined == null），检查类名是否匹配 if (isLazy && classBeingRedefined == null && className != null) { // 将 className 从 internal name 转换为 binary name String classNameDot = className.replace('/', '.'); if (!classNameMatcher.matching(classNameDot)) { return null; } // 检查是否被排除 if (classNameExcludeMatcher != null && classNameExcludeMatcher.matching(classNameDot)) { return null; } // 检查 classloader 是否匹配（指定了 targetClassLoaderHash 时生效） if (!isTargetClassLoader(inClassLoader)) { return null; } // 检查是否是 arthas 自身的类 if (inClassLoader != null && isEquals(inClassLoader, selfClassLoader)) { return null; } // 检查是否是 unsafe 类 if (!GlobalOptions.isUnsafe && inClassLoader == null) { return null; } logger.info("Lazy mode: enhancing newly loaded class: {}", classNameDot); } else { return null; } } //keep origin class reader for bytecode optimizations, avoiding JVM metaspace OOM. ClassNode classNode = new ClassNode(Opcodes.ASM9); ClassReader classReader = AsmUtils.toClassNode(classfileBuffer, classNode); // remove JSR https://github.com/alibaba/arthas/issues/1304 classNode = AsmUtils.removeJSRInstructions(classNode); // 生成增强字节码 DefaultInterceptorClassParser defaultInterceptorClassParser = new DefaultInterceptorClassParser(); final List interceptorProcessors = new ArrayList(); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyInterceptor1.class)); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyInterceptor2.class)); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyInterceptor3.class)); if (this.isTracing) { if (!this.skipJDKTrace) { interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyTraceInterceptor1.class)); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyTraceInterceptor2.class)); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyTraceInterceptor3.class)); } else { interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyTraceExcludeJDKInterceptor1.class)); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyTraceExcludeJDKInterceptor2.class)); interceptorProcessors.addAll(defaultInterceptorClassParser.parse(SpyTraceExcludeJDKInterceptor3.class)); } } List matchedMethods = new ArrayList(); for (MethodNode methodNode : classNode.methods) { if (!isIgnore(methodNode, methodNameMatcher)) { matchedMethods.add(methodNode); } } // https://github.com/alibaba/arthas/issues/1690 if (AsmUtils.isEnhancerByCGLIB(className)) { for (MethodNode methodNode : matchedMethods) { if (AsmUtils.isConstructor(methodNode)) { AsmUtils.fixConstructorExceptionTable(methodNode); } } } // 用于检查是否已插入了 spy函数，如果已有则不重复处理 GroupLocationFilter groupLocationFilter = new GroupLocationFilter(); LocationFilter enterFilter = new InvokeContainLocationFilter(Type.getInternalName(SpyAPI.class), "atEnter", LocationType.ENTER); LocationFilter existFilter = new InvokeContainLocationFilter(Type.getInternalName(SpyAPI.class), "atExit", LocationType.EXIT); LocationFilter exceptionFilter = new InvokeContainLocationFilter(Type.getInternalName(SpyAPI.class), "atExceptionExit", LocationType.EXCEPTION_EXIT); groupLocationFilter.addFilter(enterFilter); groupLocationFilter.addFilter(existFilter); groupLocationFilter.addFilter(exceptionFilter); LocationFilter invokeBeforeFilter = new InvokeCheckLocationFilter(Type.getInternalName(SpyAPI.class), "atBeforeInvoke", LocationType.INVOKE); LocationFilter invokeAfterFilter = new InvokeCheckLocationFilter(Type.getInternalName(SpyAPI.class), "atInvokeException", LocationType.INVOKE_COMPLETED); LocationFilter invokeExceptionFilter = new InvokeCheckLocationFilter(Type.getInternalName(SpyAPI.class), "atInvokeException", LocationType.INVOKE_EXCEPTION_EXIT); groupLocationFilter.addFilter(invokeBeforeFilter); groupLocationFilter.addFilter(invokeAfterFilter); groupLocationFilter.addFilter(invokeExceptionFilter); for (MethodNode methodNode : matchedMethods) { if (AsmUtils.isNative(methodNode)) { logger.info("ignore native method: {}", AsmUtils.methodDeclaration(Type.getObjectType(classNode.name), methodNode)); continue; } // 先查找是否有 atBeforeInvoke 函数，如果有，则说明已经有trace了，则直接不再尝试增强，直接插入 listener if(AsmUtils.containsMethodInsnNode(methodNode, Type.getInternalName(SpyAPI.class), "atBeforeInvoke")) { for (AbstractInsnNode insnNode = methodNode.instructions.getFirst(); insnNode != null; insnNode = insnNode .getNext()) { if (insnNode instanceof MethodInsnNode) { final MethodInsnNode methodInsnNode = (MethodInsnNode) insnNode; if(this.skipJDKTrace) { if(methodInsnNode.owner.startsWith("java/")) { continue; } } // 原始类型的box类型相关的都跳过 if(AsmOpUtils.isBoxType(Type.getObjectType(methodInsnNode.owner))) { continue; } AdviceListenerManager.registerTraceAdviceListener(inClassLoader, className, methodInsnNode.owner, methodInsnNode.name, methodInsnNode.desc, listener); } } }else { MethodProcessor methodProcessor = new MethodProcessor(classNode, methodNode, groupLocationFilter); for (InterceptorProcessor interceptor : interceptorProcessors) { try { List locations = interceptor.process(methodProcessor); for (Location location : locations) { if (location instanceof MethodInsnNodeWare) { MethodInsnNodeWare methodInsnNodeWare = (MethodInsnNodeWare) location; MethodInsnNode methodInsnNode = methodInsnNodeWare.methodInsnNode(); AdviceListenerManager.registerTraceAdviceListener(inClassLoader, className, methodInsnNode.owner, methodInsnNode.name, methodInsnNode.desc, listener); } } } catch (Throwable e) { logger.error("enhancer error, class: {}, method: {}, interceptor: {}", classNode.name, methodNode.name, interceptor.getClass().getName(), e); } } } // enter/exist 总是要插入 listener AdviceListenerManager.registerAdviceListener(inClassLoader, className, methodNode.name, methodNode.desc, listener); affect.addMethodAndCount(inClassLoader, className, methodNode.name, methodNode.desc); } // https://github.com/alibaba/arthas/issues/1223 , V1_5 的major version是49 if (AsmUtils.getMajorVersion(classNode.version) < 49) { classNode.version = AsmUtils.setMajorVersion(classNode.version, 49); } byte[] enhanceClassByteArray = AsmUtils.toBytes(classNode, inClassLoader, classReader); // 增强成功，记录类 classBytesCache.put(classBeingRedefined, new Object()); // dump the class dumpClassIfNecessary(className, enhanceClassByteArray, affect); // 成功计数 affect.cCnt(1); return enhanceClassByteArray; } catch (Throwable t) { logger.warn("transform loader[{}]:class[{}] failed.", inClassLoader, className, t); affect.setThrowable(t); } return null; } /** * 是否抽象属性 */ private boolean isAbstract(int access) { return (Opcodes.ACC_ABSTRACT & access) == Opcodes.ACC_ABSTRACT; } /** * 是否需要忽略 */ private boolean isIgnore(MethodNode methodNode, Matcher methodNameMatcher) { return null == methodNode || isAbstract(methodNode.access) || !methodNameMatcher.matching(methodNode.name) || ArthasCheckUtils.isEquals(methodNode.name, ""); } /** * dump class to file */ private static void dumpClassIfNecessary(String className, byte[] data, EnhancerAffect affect) { if (!GlobalOptions.isDump) { return; } final File dumpClassFile = new File("./arthas-class-dump/" + className + ".class"); final File classPath = new File(dumpClassFile.getParent()); // 创建类所在的包路径 if (!classPath.mkdirs() && !classPath.exists()) { logger.warn("create dump classpath:{} failed.", classPath); return; } // 将类字节码写入文件 try { FileUtils.writeByteArrayToFile(dumpClassFile, data); affect.addClassDumpFile(dumpClassFile); if (GlobalOptions.verbose) { logger.info("dump enhanced class: {}, path: {}", className, dumpClassFile); } } catch (IOException e) { logger.warn("dump class:{} to file {} failed.", className, dumpClassFile, e); } } /** * 是否需要过滤的类 * * @param classes 类集合 */ private List, String>> filter(Set> classes) { List, String>> filteredClasses = new ArrayList, String>>(); final Iterator> it = classes.iterator(); while (it.hasNext()) { final Class clazz = it.next(); boolean removeFlag = false; if (null == clazz) { removeFlag = true; } else if (!isTargetClassLoader(clazz.getClassLoader())) { filteredClasses.add(new Pair, String>(clazz, "classloader is not matched")); removeFlag = true; } else if (isSelf(clazz)) { filteredClasses.add(new Pair, String>(clazz, "class loaded by arthas itself")); removeFlag = true; } else if (isUnsafeClass(clazz)) { filteredClasses.add(new Pair, String>(clazz, "class loaded by Bootstrap Classloader, try to execute `options unsafe true`")); removeFlag = true; } else if (isExclude(clazz)) { filteredClasses.add(new Pair, String>(clazz, "class is excluded")); removeFlag = true; } else { Pair unsupportedResult = isUnsupportedClass(clazz); if (unsupportedResult.getFirst()) { filteredClasses.add(new Pair, String>(clazz, unsupportedResult.getSecond())); removeFlag = true; } } if (removeFlag) { it.remove(); } } return filteredClasses; } private boolean isExclude(Class clazz) { if (this.classNameExcludeMatcher != null) { return classNameExcludeMatcher.matching(clazz.getName()); } return false; } /** * 是否过滤Arthas加载的类 */ private static boolean isSelf(Class clazz) { return null != clazz && isEquals(clazz.getClassLoader(), selfClassLoader); } /** * 是否过滤unsafe类 */ private static boolean isUnsafeClass(Class clazz) { return !GlobalOptions.isUnsafe && clazz.getClassLoader() == null; } /** * 是否过滤目前暂不支持的类 */ private static Pair isUnsupportedClass(Class clazz) { if (ClassUtils.isLambdaClass(clazz)) { return new Pair(Boolean.TRUE, "class is lambda"); } if (clazz.isInterface() && !GlobalOptions.isSupportDefaultMethod) { return new Pair(Boolean.TRUE, "class is interface"); } if (clazz.equals(Integer.class)) { return new Pair(Boolean.TRUE, "class is java.lang.Integer"); } if (clazz.equals(Class.class)) { return new Pair(Boolean.TRUE, "class is java.lang.Class"); } if (clazz.equals(Method.class)) { return new Pair(Boolean.TRUE, "class is java.lang.Method"); } if (clazz.isArray()) { return new Pair(Boolean.TRUE, "class is array"); } return new Pair(Boolean.FALSE, ""); } /** * 对象增强 * * @param inst inst * @param maxNumOfMatchedClass 匹配的class最大数量 * @return 增强影响范围 * @throws UnmodifiableClassException 增强失败 */ public synchronized EnhancerAffect enhance(final Instrumentation inst, int maxNumOfMatchedClass) throws UnmodifiableClassException { // 获取需要增强的类集合 this.matchingClasses = GlobalOptions.isDisableSubClass ? SearchUtils.searchClass(inst, classNameMatcher) : SearchUtils.searchSubClass(inst, SearchUtils.searchClass(inst, classNameMatcher)); // 过滤掉无法被增强的类 List, String>> filtedList = filter(matchingClasses); if (!filtedList.isEmpty()) { for (Pair, String> filted : filtedList) { logger.info("ignore class: {}, reason: {}", filted.getFirst().getName(), filted.getSecond()); } } if (matchingClasses.size() > maxNumOfMatchedClass) { affect.setOverLimitMsg("The number of matched classes is " +matchingClasses.size()+ ", greater than the limit value " + maxNumOfMatchedClass + ". Try to change the limit with option '-m '."); return affect; } logger.info("enhance matched classes: {}", matchingClasses); affect.setTransformer(this); try { ArthasBootstrap.getInstance().getTransformerManager().addTransformer(this, isTracing); // 懒加载模式：同时添加到懒加载 transformer 列表 // 这样才能在类首次加载时被增强 if (isLazy) { ArthasBootstrap.getInstance().getTransformerManager().addLazyTransformer(this); logger.info("Lazy mode enabled, transformer added to lazy transformer list"); } // 批量增强 if (GlobalOptions.isBatchReTransform) { final int size = matchingClasses.size(); final Class[] classArray = new Class[size]; arraycopy(matchingClasses.toArray(), 0, classArray, 0, size); if (classArray.length > 0) { inst.retransformClasses(classArray); logger.info("Success to batch transform classes: " + Arrays.toString(classArray)); } } else { // for each 增强 for (Class clazz : matchingClasses) { try { inst.retransformClasses(clazz); logger.info("Success to transform class: " + clazz); } catch (Throwable t) { logger.warn("retransform {} failed.", clazz, t); if (t instanceof UnmodifiableClassException) { throw (UnmodifiableClassException) t; } else if (t instanceof RuntimeException) { throw (RuntimeException) t; } else { throw new RuntimeException(t); } } } } } catch (Throwable e) { logger.error("Enhancer error, matchingClasses: {}", matchingClasses, e); affect.setThrowable(e); } return affect; } private boolean isTargetClassLoader(ClassLoader inClassLoader) { if (targetClassLoaderHash == null || targetClassLoaderHash.isEmpty()) { return true; } if (inClassLoader == null) { return false; } return Integer.toHexString(inClassLoader.hashCode()).equalsIgnoreCase(targetClassLoaderHash); } /** * 重置指定的Class * * @param inst inst * @param classNameMatcher 类名匹配 * @return 增强影响范围 * @throws UnmodifiableClassException */ public static synchronized EnhancerAffect reset(final Instrumentation inst, final Matcher classNameMatcher) throws UnmodifiableClassException { final EnhancerAffect affect = new EnhancerAffect(); final Set> enhanceClassSet = new HashSet>(); for (Class classInCache : classBytesCache.keySet()) { if (classNameMatcher.matching(classInCache.getName())) { enhanceClassSet.add(classInCache); } } try { enhance(inst, enhanceClassSet); logger.info("Success to reset classes: " + enhanceClassSet); } finally { for (Class resetClass : enhanceClassSet) { classBytesCache.remove(resetClass); affect.cCnt(1); } } return affect; } // 批量增强 private static void enhance(Instrumentation inst, Set> classes) throws UnmodifiableClassException { int size = classes.size(); Class[] classArray = new Class[size]; arraycopy(classes.toArray(), 0, classArray, 0, size); if (classArray.length > 0) { inst.retransformClasses(classArray); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/InvokeTraceable.java ================================================ package com.taobao.arthas.core.advisor; /** * 方法调用跟踪
* 当一个方法内部调用另外一个方法时，会触发此跟踪方法 * Created by vlinux on 15/5/27. */ public interface InvokeTraceable { /** * 调用之前跟踪 * * @param tracingClassName 调用类名 * @param tracingMethodName 调用方法名 * @param tracingMethodDesc 调用方法描述 * @param tracingLineNumber 执行调用行数 * @throws Throwable 通知过程出错 */ void invokeBeforeTracing( ClassLoader classLoader, String tracingClassName, String tracingMethodName, String tracingMethodDesc, int tracingLineNumber) throws Throwable; /** * 抛异常后跟踪 * * @param tracingClassName 调用类名 * @param tracingMethodName 调用方法名 * @param tracingMethodDesc 调用方法描述 * @param tracingLineNumber 执行调用行数 * @throws Throwable 通知过程出错 */ void invokeThrowTracing( ClassLoader classLoader, String tracingClassName, String tracingMethodName, String tracingMethodDesc, int tracingLineNumber) throws Throwable; /** * 调用之后跟踪 * * @param tracingClassName 调用类名 * @param tracingMethodName 调用方法名 * @param tracingMethodDesc 调用方法描述 * @param tracingLineNumber 执行调用行数 * @throws Throwable 通知过程出错 */ void invokeAfterTracing( ClassLoader classLoader, String tracingClassName, String tracingMethodName, String tracingMethodDesc, int tracingLineNumber) throws Throwable; } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/SpyImpl.java ================================================ package com.taobao.arthas.core.advisor; import java.arthas.SpyAPI.AbstractSpy; import java.util.List; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.taobao.arthas.core.shell.system.ExecStatus; import com.taobao.arthas.core.shell.system.Process; import com.taobao.arthas.core.shell.system.ProcessAware; import com.taobao.arthas.core.util.StringUtils; /** * 

 * 怎么从 className|methodDesc 到 id 对应起来？？
 * 当id少时，可以id自己来判断是否符合？
 * 
 * 如果是每个 className|methodDesc 为 key ，是否
 *
* * @author hengyunabc 2020-04-24 * */ public class SpyImpl extends AbstractSpy { private static final Logger logger = LoggerFactory.getLogger(SpyImpl.class); @Override public void atEnter(Class clazz, String methodInfo, Object target, Object[] args) { ClassLoader classLoader = clazz.getClassLoader(); String[] info = StringUtils.splitMethodInfo(methodInfo); String methodName = info[0]; String methodDesc = info[1]; // TODO listener 只用查一次，放到 thread local里保存起来就可以了！ List listeners = AdviceListenerManager.queryAdviceListeners(classLoader, clazz.getName(), methodName, methodDesc); if (listeners != null) { for (AdviceListener adviceListener : listeners) { try { if (skipAdviceListener(adviceListener)) { continue; } adviceListener.before(clazz, methodName, methodDesc, target, args); } catch (Throwable e) { logger.error("class: {}, methodInfo: {}", clazz.getName(), methodInfo, e); } } } } @Override public void atExit(Class clazz, String methodInfo, Object target, Object[] args, Object returnObject) { ClassLoader classLoader = clazz.getClassLoader(); String[] info = StringUtils.splitMethodInfo(methodInfo); String methodName = info[0]; String methodDesc = info[1]; List listeners = AdviceListenerManager.queryAdviceListeners(classLoader, clazz.getName(), methodName, methodDesc); if (listeners != null) { for (AdviceListener adviceListener : listeners) { try { if (skipAdviceListener(adviceListener)) { continue; } adviceListener.afterReturning(clazz, methodName, methodDesc, target, args, returnObject); } catch (Throwable e) { logger.error("class: {}, methodInfo: {}", clazz.getName(), methodInfo, e); } } } } @Override public void atExceptionExit(Class clazz, String methodInfo, Object target, Object[] args, Throwable throwable) { ClassLoader classLoader = clazz.getClassLoader(); String[] info = StringUtils.splitMethodInfo(methodInfo); String methodName = info[0]; String methodDesc = info[1]; List listeners = AdviceListenerManager.queryAdviceListeners(classLoader, clazz.getName(), methodName, methodDesc); if (listeners != null) { for (AdviceListener adviceListener : listeners) { try { if (skipAdviceListener(adviceListener)) { continue; } adviceListener.afterThrowing(clazz, methodName, methodDesc, target, args, throwable); } catch (Throwable e) { logger.error("class: {}, methodInfo: {}", clazz.getName(), methodInfo, e); } } } } @Override public void atBeforeInvoke(Class clazz, String invokeInfo, Object target) { ClassLoader classLoader = clazz.getClassLoader(); String[] info = StringUtils.splitInvokeInfo(invokeInfo); String owner = info[0]; String methodName = info[1]; String methodDesc = info[2]; List listeners = AdviceListenerManager.queryTraceAdviceListeners(classLoader, clazz.getName(), owner, methodName, methodDesc); if (listeners != null) { for (AdviceListener adviceListener : listeners) { try { if (skipAdviceListener(adviceListener)) { continue; } final InvokeTraceable listener = (InvokeTraceable) adviceListener; listener.invokeBeforeTracing(classLoader, owner, methodName, methodDesc, Integer.parseInt(info[3])); } catch (Throwable e) { logger.error("class: {}, invokeInfo: {}", clazz.getName(), invokeInfo, e); } } } } @Override public void atAfterInvoke(Class clazz, String invokeInfo, Object target) { ClassLoader classLoader = clazz.getClassLoader(); String[] info = StringUtils.splitInvokeInfo(invokeInfo); String owner = info[0]; String methodName = info[1]; String methodDesc = info[2]; List listeners = AdviceListenerManager.queryTraceAdviceListeners(classLoader, clazz.getName(), owner, methodName, methodDesc); if (listeners != null) { for (AdviceListener adviceListener : listeners) { try { if (skipAdviceListener(adviceListener)) { continue; } final InvokeTraceable listener = (InvokeTraceable) adviceListener; listener.invokeAfterTracing(classLoader, owner, methodName, methodDesc, Integer.parseInt(info[3])); } catch (Throwable e) { logger.error("class: {}, invokeInfo: {}", clazz.getName(), invokeInfo, e); } } } } @Override public void atInvokeException(Class clazz, String invokeInfo, Object target, Throwable throwable) { ClassLoader classLoader = clazz.getClassLoader(); String[] info = StringUtils.splitInvokeInfo(invokeInfo); String owner = info[0]; String methodName = info[1]; String methodDesc = info[2]; List listeners = AdviceListenerManager.queryTraceAdviceListeners(classLoader, clazz.getName(), owner, methodName, methodDesc); if (listeners != null) { for (AdviceListener adviceListener : listeners) { try { if (skipAdviceListener(adviceListener)) { continue; } final InvokeTraceable listener = (InvokeTraceable) adviceListener; listener.invokeThrowTracing(classLoader, owner, methodName, methodDesc, Integer.parseInt(info[3])); } catch (Throwable e) { logger.error("class: {}, invokeInfo: {}", clazz.getName(), invokeInfo, e); } } } } private static boolean skipAdviceListener(AdviceListener adviceListener) { if (adviceListener instanceof ProcessAware) { ProcessAware processAware = (ProcessAware) adviceListener; Process process = processAware.getProcess(); if (process == null) { return true; } ExecStatus status = process.status(); if (status.equals(ExecStatus.TERMINATED) || status.equals(ExecStatus.STOPPED)) { return true; } } return false; } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/SpyInterceptors.java ================================================ package com.taobao.arthas.core.advisor; import java.arthas.SpyAPI; import com.alibaba.bytekit.asm.binding.Binding; import com.alibaba.bytekit.asm.interceptor.annotation.AtEnter; import com.alibaba.bytekit.asm.interceptor.annotation.AtExceptionExit; import com.alibaba.bytekit.asm.interceptor.annotation.AtExit; import com.alibaba.bytekit.asm.interceptor.annotation.AtInvoke; import com.alibaba.bytekit.asm.interceptor.annotation.AtInvokeException; /** * * @author hengyunabc 2020-06-05 * */ public class SpyInterceptors { public static class SpyInterceptor1 { @AtEnter(inline = true) public static void atEnter(@Binding.This Object target, @Binding.Class Class clazz, @Binding.MethodInfo String methodInfo, @Binding.Args Object[] args) { SpyAPI.atEnter(clazz, methodInfo, target, args); } } public static class SpyInterceptor2 { @AtExit(inline = true) public static void atExit(@Binding.This Object target, @Binding.Class Class clazz, @Binding.MethodInfo String methodInfo, @Binding.Args Object[] args, @Binding.Return Object returnObj) { SpyAPI.atExit(clazz, methodInfo, target, args, returnObj); } } public static class SpyInterceptor3 { @AtExceptionExit(inline = true) public static void atExceptionExit(@Binding.This Object target, @Binding.Class Class clazz, @Binding.MethodInfo String methodInfo, @Binding.Args Object[] args, @Binding.Throwable Throwable throwable) { SpyAPI.atExceptionExit(clazz, methodInfo, target, args, throwable); } } public static class SpyTraceInterceptor1 { @AtInvoke(name = "", inline = true, whenComplete = false, excludes = {"java.arthas.SpyAPI", "java.lang.Byte" , "java.lang.Boolean" , "java.lang.Short" , "java.lang.Character" , "java.lang.Integer" , "java.lang.Float" , "java.lang.Long" , "java.lang.Double"}) public static void onInvoke(@Binding.This Object target, @Binding.Class Class clazz, @Binding.InvokeInfo String invokeInfo) { SpyAPI.atBeforeInvoke(clazz, invokeInfo, target); } } public static class SpyTraceInterceptor2 { @AtInvoke(name = "", inline = true, whenComplete = true, excludes = {"java.arthas.SpyAPI", "java.lang.Byte" , "java.lang.Boolean" , "java.lang.Short" , "java.lang.Character" , "java.lang.Integer" , "java.lang.Float" , "java.lang.Long" , "java.lang.Double"}) public static void onInvokeAfter(@Binding.This Object target, @Binding.Class Class clazz, @Binding.InvokeInfo String invokeInfo) { SpyAPI.atAfterInvoke(clazz, invokeInfo, target); } } public static class SpyTraceInterceptor3 { @AtInvokeException(name = "", inline = true, excludes = {"java.arthas.SpyAPI", "java.lang.Byte" , "java.lang.Boolean" , "java.lang.Short" , "java.lang.Character" , "java.lang.Integer" , "java.lang.Float" , "java.lang.Long" , "java.lang.Double"}) public static void onInvokeException(@Binding.This Object target, @Binding.Class Class clazz, @Binding.InvokeInfo String invokeInfo, @Binding.Throwable Throwable throwable) { SpyAPI.atInvokeException(clazz, invokeInfo, target, throwable); } } public static class SpyTraceExcludeJDKInterceptor1 { @AtInvoke(name = "", inline = true, whenComplete = false, excludes = "java.**") public static void onInvoke(@Binding.This Object target, @Binding.Class Class clazz, @Binding.InvokeInfo String invokeInfo) { SpyAPI.atBeforeInvoke(clazz, invokeInfo, target); } } public static class SpyTraceExcludeJDKInterceptor2 { @AtInvoke(name = "", inline = true, whenComplete = true, excludes = "java.**") public static void onInvokeAfter(@Binding.This Object target, @Binding.Class Class clazz, @Binding.InvokeInfo String invokeInfo) { SpyAPI.atAfterInvoke(clazz, invokeInfo, target); } } public static class SpyTraceExcludeJDKInterceptor3 { @AtInvokeException(name = "", inline = true, excludes = "java.**") public static void onInvokeException(@Binding.This Object target, @Binding.Class Class clazz, @Binding.InvokeInfo String invokeInfo, @Binding.Throwable Throwable throwable) { SpyAPI.atInvokeException(clazz, invokeInfo, target, throwable); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/advisor/TransformerManager.java ================================================ package com.taobao.arthas.core.advisor; import java.lang.instrument.ClassFileTransformer; import java.lang.instrument.IllegalClassFormatException; import java.lang.instrument.Instrumentation; import java.security.ProtectionDomain; import java.util.List; import java.util.concurrent.CopyOnWriteArrayList; /** * * 
 * * 统一管理 ClassFileTransformer
 * * 每个增强命令对应一个 Enhancer ，也统一在这里管理
 *
* * @see com.taobao.arthas.core.advisor.Enhancer * @author hengyunabc 2020-05-18 * */ public class TransformerManager { private Instrumentation instrumentation; private List watchTransformers = new CopyOnWriteArrayList(); private List traceTransformers = new CopyOnWriteArrayList(); /** * 先于 watch/trace的 Transformer TODO 改进为全部用 order 排序？ */ private List reTransformers = new CopyOnWriteArrayList(); /** * 懒加载模式的 Transformer，用于在类首次加载时增强 * 这些 transformer 需要用 addTransformer(transformer, false) 注册才能在类首次加载时工作 */ private List lazyTransformers = new CopyOnWriteArrayList(); private ClassFileTransformer classFileTransformer; /** * 用于处理类首次加载的 transformer（非 retransform-capable） * 只有这种 transformer 才会在类首次定义时被调用 */ private ClassFileTransformer lazyClassFileTransformer; public TransformerManager(Instrumentation instrumentation) { this.instrumentation = instrumentation; classFileTransformer = new ClassFileTransformer() { @Override public byte[] transform(ClassLoader loader, String className, Class classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException { for (ClassFileTransformer classFileTransformer : reTransformers) { byte[] transformResult = classFileTransformer.transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer); if (transformResult != null) { classfileBuffer = transformResult; } } for (ClassFileTransformer classFileTransformer : watchTransformers) { byte[] transformResult = classFileTransformer.transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer); if (transformResult != null) { classfileBuffer = transformResult; } } for (ClassFileTransformer classFileTransformer : traceTransformers) { byte[] transformResult = classFileTransformer.transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer); if (transformResult != null) { classfileBuffer = transformResult; } } return classfileBuffer; } }; instrumentation.addTransformer(classFileTransformer, true); // 懒加载 transformer，用于在类首次加载时增强 // 注意：必须用 addTransformer(transformer, false) 才能在类首次定义时被调用 lazyClassFileTransformer = new ClassFileTransformer() { @Override public byte[] transform(ClassLoader loader, String className, Class classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException { // 只处理类首次加载的情况（classBeingRedefined == null） if (classBeingRedefined != null) { return null; } for (ClassFileTransformer transformer : lazyTransformers) { byte[] transformResult = transformer.transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer); if (transformResult != null) { classfileBuffer = transformResult; } } return classfileBuffer; } }; // 使用 false 参数，这样才会在类首次定义时被调用 instrumentation.addTransformer(lazyClassFileTransformer, false); } public void addTransformer(ClassFileTransformer transformer, boolean isTracing) { if (isTracing) { traceTransformers.add(transformer); } else { watchTransformers.add(transformer); } } /** * 添加懒加载 transformer，用于在类首次加载时增强 */ public void addLazyTransformer(ClassFileTransformer transformer) { lazyTransformers.add(transformer); } public void addRetransformer(ClassFileTransformer transformer) { reTransformers.add(transformer); } public void removeTransformer(ClassFileTransformer transformer) { reTransformers.remove(transformer); watchTransformers.remove(transformer); traceTransformers.remove(transformer); lazyTransformers.remove(transformer); } public void destroy() { reTransformers.clear(); watchTransformers.clear(); traceTransformers.clear(); lazyTransformers.clear(); instrumentation.removeTransformer(classFileTransformer); instrumentation.removeTransformer(lazyClassFileTransformer); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/BuiltinCommandPack.java ================================================ package com.taobao.arthas.core.command; import java.util.ArrayList; import java.util.List; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.taobao.arthas.core.command.basic1000.*; import com.taobao.arthas.core.command.hidden.JulyCommand; import com.taobao.arthas.core.command.hidden.ThanksCommand; import com.taobao.arthas.core.command.klass100.ClassLoaderCommand; import com.taobao.arthas.core.command.klass100.DumpClassCommand; import com.taobao.arthas.core.command.klass100.GetStaticCommand; import com.taobao.arthas.core.command.klass100.JadCommand; import com.taobao.arthas.core.command.klass100.MemoryCompilerCommand; import com.taobao.arthas.core.command.klass100.OgnlCommand; import com.taobao.arthas.core.command.klass100.RedefineCommand; import com.taobao.arthas.core.command.klass100.RetransformCommand; import com.taobao.arthas.core.command.klass100.SearchClassCommand; import com.taobao.arthas.core.command.klass100.SearchMethodCommand; import com.taobao.arthas.core.command.logger.LoggerCommand; import com.taobao.arthas.core.command.monitor200.DashboardCommand; import com.taobao.arthas.core.command.monitor200.HeapDumpCommand; import com.taobao.arthas.core.command.monitor200.JvmCommand; import com.taobao.arthas.core.command.monitor200.MBeanCommand; import com.taobao.arthas.core.command.monitor200.MemoryCommand; import com.taobao.arthas.core.command.monitor200.MonitorCommand; import com.taobao.arthas.core.command.monitor200.PerfCounterCommand; import com.taobao.arthas.core.command.monitor200.ProfilerCommand; import com.taobao.arthas.core.command.monitor200.StackCommand; import com.taobao.arthas.core.command.monitor200.ThreadCommand; import com.taobao.arthas.core.command.monitor200.TimeTunnelCommand; import com.taobao.arthas.core.command.monitor200.TraceCommand; import com.taobao.arthas.core.command.monitor200.VmToolCommand; import com.taobao.arthas.core.command.monitor200.WatchCommand; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.Command; import com.taobao.arthas.core.shell.command.CommandResolver; import com.taobao.middleware.cli.annotations.Name; /** * TODO automatically discover the built-in commands. * @author beiwei30 on 17/11/2016. */ public class BuiltinCommandPack implements CommandResolver { private static final Logger logger = LoggerFactory.getLogger(BuiltinCommandPack.class); private List commands = new ArrayList(); public BuiltinCommandPack(List disabledCommands) { initCommands(disabledCommands); } @Override public List commands() { return commands; } private void initCommands(List disabledCommands) { List> commandClassList = new ArrayList>(33); commandClassList.add(HelpCommand.class); commandClassList.add(AuthCommand.class); commandClassList.add(KeymapCommand.class); commandClassList.add(SearchClassCommand.class); commandClassList.add(SearchMethodCommand.class); commandClassList.add(ClassLoaderCommand.class); commandClassList.add(JadCommand.class); commandClassList.add(GetStaticCommand.class); commandClassList.add(MonitorCommand.class); commandClassList.add(StackCommand.class); commandClassList.add(ThreadCommand.class); commandClassList.add(TraceCommand.class); commandClassList.add(WatchCommand.class); commandClassList.add(TimeTunnelCommand.class); commandClassList.add(JvmCommand.class); commandClassList.add(MemoryCommand.class); commandClassList.add(PerfCounterCommand.class); // commandClassList.add(GroovyScriptCommand.class); commandClassList.add(OgnlCommand.class); commandClassList.add(MemoryCompilerCommand.class); commandClassList.add(RedefineCommand.class); commandClassList.add(RetransformCommand.class); commandClassList.add(DashboardCommand.class); commandClassList.add(DumpClassCommand.class); commandClassList.add(HeapDumpCommand.class); commandClassList.add(JulyCommand.class); commandClassList.add(ThanksCommand.class); commandClassList.add(OptionsCommand.class); commandClassList.add(ClsCommand.class); commandClassList.add(ResetCommand.class); commandClassList.add(VersionCommand.class); commandClassList.add(SessionCommand.class); commandClassList.add(SystemPropertyCommand.class); commandClassList.add(SystemEnvCommand.class); commandClassList.add(VMOptionCommand.class); commandClassList.add(LoggerCommand.class); commandClassList.add(HistoryCommand.class); commandClassList.add(CatCommand.class); commandClassList.add(Base64Command.class); commandClassList.add(EchoCommand.class); commandClassList.add(PwdCommand.class); commandClassList.add(MBeanCommand.class); commandClassList.add(GrepCommand.class); commandClassList.add(TeeCommand.class); commandClassList.add(ProfilerCommand.class); commandClassList.add(VmToolCommand.class); commandClassList.add(StopCommand.class); try { if (ClassLoader.getSystemClassLoader().getResource("jdk/jfr/Recording.class") != null) { commandClassList.add(JFRCommand.class); } } catch (Throwable e) { logger.error("This jdk version not support jfr command"); } for (Class clazz : commandClassList) { Name name = clazz.getAnnotation(Name.class); if (name != null && name.value() != null) { if (disabledCommands.contains(name.value())) { continue; } } commands.add(Command.create(clazz)); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/CommandExecutorImpl.java ================================================ package com.taobao.arthas.core.command; import com.taobao.arthas.common.PidUtils; import com.taobao.arthas.core.command.model.*; import com.taobao.arthas.core.distribution.ResultConsumer; import com.taobao.arthas.core.distribution.ResultDistributor; import com.taobao.arthas.core.distribution.SharingResultDistributor; import com.taobao.arthas.core.distribution.impl.PackingResultDistributorImpl; import com.taobao.arthas.core.distribution.impl.ResultConsumerImpl; import com.taobao.arthas.core.distribution.impl.SharingResultDistributorImpl; import com.taobao.arthas.core.shell.cli.CliToken; import com.taobao.arthas.core.shell.cli.CliTokens; import com.taobao.arthas.core.shell.cli.Completion; import com.taobao.arthas.core.shell.handlers.Handler; import com.taobao.arthas.core.shell.session.Session; import com.taobao.arthas.core.shell.session.SessionManager; import com.taobao.arthas.core.shell.system.Job; import com.taobao.arthas.core.shell.system.JobController; import com.taobao.arthas.core.shell.system.JobListener; import com.taobao.arthas.core.shell.system.impl.InternalCommandManager; import com.taobao.arthas.core.shell.term.SignalHandler; import com.taobao.arthas.core.shell.term.Term; import com.taobao.arthas.core.util.ArthasBanner; import com.taobao.arthas.core.util.DateUtils; import com.taobao.arthas.core.util.StringUtils; import com.taobao.arthas.mcp.server.CommandExecutor; import io.termd.core.function.Function; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.List; import java.util.Map; import java.util.TreeMap; import static com.taobao.arthas.common.ArthasConstants.SUBJECT_KEY; /** * 命令执行器，用于执行Arthas命令，支持同步和异步执行 */ public class CommandExecutorImpl implements CommandExecutor { private static final Logger logger = LoggerFactory.getLogger(CommandExecutorImpl.class); private static final String ONETIME_SESSION_KEY = "oneTimeSession"; private final SessionManager sessionManager; private final JobController jobController; private final InternalCommandManager commandManager; public CommandExecutorImpl(SessionManager sessionManager) { this.sessionManager = sessionManager; this.commandManager = sessionManager.getCommandManager(); this.jobController = sessionManager.getJobController(); } public Session getCurrentSession(String sessionId, boolean oneTimeIsAllowed) { if (sessionId == null || sessionId.trim().isEmpty()) { if (!oneTimeIsAllowed) { throw new SessionNotFoundException("SessionId is required for this operation"); } Session session = sessionManager.createSession(); if (session == null) { throw new SessionNotFoundException("Failed to create temporary session"); } session.put(ONETIME_SESSION_KEY, new Object()); logger.debug("Created one-time session {}", session.getSessionId()); return session; } else { Session session = sessionManager.getSession(sessionId); if (session == null) { throw new SessionNotFoundException("Session not found: " + sessionId); } sessionManager.updateAccessTime(session); logger.debug("Using existing session {}", sessionId); return session; } } /** * 内部同步执行方法，统一处理认证和session管理 * * @param commandLine 命令行 * @param timeout 超时时间 * @param sessionId session ID，如果为null则创建临时session * @param authSubject 认证主体，如果不为null则应用到session * @param userId 用户 ID，用于统计上报 * @return 执行结果 */ @Override public Map executeSync(String commandLine, long timeout, String sessionId, Object authSubject, String userId) { Session session = null; boolean oneTimeAccess = false; try { session = getCurrentSession(sessionId, true); if (authSubject != null) { session.put(SUBJECT_KEY, authSubject); logger.debug("Applied auth subject to session: {} (authSubject: {})", session.getSessionId(), authSubject.getClass().getSimpleName()); } // 设置 userId 到 session，用于统计上报 if (userId != null && !userId.trim().isEmpty()) { session.setUserId(userId); logger.debug("Set userId to session: {} (userId: {})", session.getSessionId(), userId); } if (session.get(ONETIME_SESSION_KEY) != null) { oneTimeAccess = true; } PackingResultDistributorImpl resultDistributor = new PackingResultDistributorImpl(session); Job job = this.createJob(commandLine, session, resultDistributor); if (job == null) { logger.error("Failed to create job for command: {}", commandLine); return createErrorResult(commandLine, "Failed to create job"); } job.run(); boolean finished = waitForJob(job, (int) timeout); if (!finished) { logger.warn("Command timeout after {} ms: {}", timeout, commandLine); job.interrupt(); return createTimeoutResult(commandLine, timeout); } Map result = new TreeMap<>(); result.put("command", commandLine); result.put("success", true); result.put("sessionId", session.getSessionId()); result.put("executionTime", System.currentTimeMillis()); List results = resultDistributor.getResults(); if (results != null && !results.isEmpty()) { result.put("results", results); result.put("resultCount", results.size()); } else { result.put("results", results); result.put("resultCount", 0); } return result; } catch (SessionNotFoundException e) { logger.error("Session error for command: {}", commandLine, e); return createErrorResult(commandLine, e.getMessage()); } catch (Exception e) { logger.error("Error executing command: {}", commandLine, e); return createErrorResult(commandLine, "Error executing command: " + e.getMessage()); } finally { if (oneTimeAccess && session != null) { try { sessionManager.removeSession(session.getSessionId()); logger.debug("Destroyed one-time session {}", session.getSessionId()); } catch (Exception e) { logger.warn("Error removing one-time session", e); } } } } @Override public Map executeAsync(String commandLine, String sessionId) { Map result = new TreeMap<>(); Session session = getCurrentSession(sessionId, false); if (!session.tryLock()) { logger.warn("Another command is executing in session: {}", session.getSessionId()); return createErrorResult(commandLine, "Another command is executing"); } int lock = session.getLock(); try { Job foregroundJob = session.getForegroundJob(); if (foregroundJob != null) { logger.warn("Another job is running in session: {}, jobId: {}", session.getSessionId(), foregroundJob.id()); session.unLock(); return createErrorResult(commandLine, "Another job is running, jobId: " + foregroundJob.id()); } Job job = this.createJob(commandLine, session, session.getResultDistributor()); if (job == null) { logger.error("Failed to create job for command: {}", commandLine); session.unLock(); return createErrorResult(commandLine, "Failed to create job"); } session.setForegroundJob(job); updateSessionInputStatus(session, InputStatus.ALLOW_INTERRUPT); job.run(); result.put("success", true); result.put("command", commandLine); result.put("sessionId", session.getSessionId()); result.put("jobId", job.id()); result.put("jobStatus", job.status().toString()); return result; } catch (SessionNotFoundException e) { logger.error("Session error for async command: {}", commandLine, e); return createErrorResult(commandLine, e.getMessage()); } catch (Exception e) { logger.error("Error executing async command: {}", commandLine, e); return createErrorResult(commandLine, "Error executing async command: " + e.getMessage()); }finally { if (session.getLock() == lock) { session.unLock(); } } } @Override public Map pullResults(String sessionId, String consumerId) { if (StringUtils.isBlank(consumerId)) { return createErrorResult(null, "Consumer ID is null or empty"); } try { Session session = getCurrentSession(sessionId, false); SharingResultDistributor resultDistributor = session.getResultDistributor(); if (resultDistributor == null) { return createErrorResult(null, "No result distributor found for session: " + sessionId); } ResultConsumer consumer = resultDistributor.getConsumer(consumerId); if (consumer == null) { return createErrorResult(null, "Consumer not found: " + consumerId); } List results = consumer.pollResults(); if (results != null && results.isEmpty()) { logger.debug("Filtered empty result list for session: {}, consumer: {}", sessionId, consumerId); return null; } Map result = new TreeMap<>(); result.put("success", true); result.put("sessionId", sessionId); result.put("consumerId", consumerId); result.put("results", results); Job foregroundJob = session.getForegroundJob(); if (foregroundJob != null) { result.put("jobId", foregroundJob.id()); result.put("jobStatus", foregroundJob.status().toString()); } return result; } catch (SessionNotFoundException e) { return createErrorResult(null, e.getMessage()); } } @Override public Map interruptJob(String sessionId) { try { Session session = getCurrentSession(sessionId, false); Job job = session.getForegroundJob(); if (job == null) { return createErrorResult(null, "no foreground job is running"); } job.interrupt(); Map result = new TreeMap<>(); result.put("success", true); result.put("sessionId", sessionId); result.put("jobId", job.id()); result.put("jobStatus", job.status().toString()); return result; } catch (SessionNotFoundException e) { return createErrorResult(null, e.getMessage()); } } @Override public Map createSession() { Session session = sessionManager.createSession(); if (session == null) { return createErrorResult(null, "create api session failed"); } SharingResultDistributorImpl resultDistributor = new SharingResultDistributorImpl(session); ResultConsumer resultConsumer = new ResultConsumerImpl(); resultDistributor.addConsumer(resultConsumer); session.setResultDistributor(resultDistributor); resultDistributor.appendResult(new MessageModel("Welcome to arthas!")); WelcomeModel welcomeModel = new WelcomeModel(); welcomeModel.setVersion(ArthasBanner.version()); welcomeModel.setWiki(ArthasBanner.wiki()); welcomeModel.setTutorials(ArthasBanner.tutorials()); welcomeModel.setMainClass(PidUtils.mainClass()); welcomeModel.setPid(PidUtils.currentPid()); welcomeModel.setTime(DateUtils.getCurrentDateTime()); resultDistributor.appendResult(welcomeModel); updateSessionInputStatus(session, InputStatus.ALLOW_INPUT); Map result = new TreeMap<>(); result.put("success", true); result.put("sessionId", session.getSessionId()); result.put("consumerId", resultConsumer.getConsumerId()); return result; } @Override public Map closeSession(String sessionId) { try { Session session = getCurrentSession(sessionId, false); if (session.isLocked()) { session.unLock(); } sessionManager.removeSession(session.getSessionId()); Map result = new TreeMap<>(); result.put("success", true); result.put("sessionId", sessionId); return result; } catch (SessionNotFoundException e) { return createErrorResult(null, e.getMessage()); } } @Override public void setSessionAuth(String sessionId, Object authSubject) { try { Session session = getCurrentSession(sessionId, false); if (authSubject != null) { session.put(SUBJECT_KEY, authSubject); } } catch (SessionNotFoundException e) { logger.warn("Cannot set auth for non-existent session: {}", sessionId); } } @Override public void setSessionUserId(String sessionId, String userId) { try { Session session = getCurrentSession(sessionId, false); if (userId != null && !userId.trim().isEmpty()) { session.setUserId(userId); logger.debug("Set userId for session {}: {}", sessionId, userId); } } catch (SessionNotFoundException e) { logger.warn("Cannot set userId for non-existent session: {}", sessionId); } } private boolean waitForJob(Job job, int timeout) { long startTime = System.currentTimeMillis(); while (true) { switch (job.status()) { case STOPPED: case TERMINATED: return true; } if (System.currentTimeMillis() - startTime > timeout) { return false; } try { Thread.sleep(100); } catch (InterruptedException e) { } } } private Map createErrorResult(String commandLine, String errorMessage) { Map result = new TreeMap<>(); result.put("success", false); result.put("error", errorMessage); if (commandLine != null) { result.put("command", commandLine); } return result; } private Map createTimeoutResult(String commandLine, long timeout) { Map result = new TreeMap<>(); result.put("command", commandLine); result.put("success", false); result.put("error", "Command timeout after " + timeout + " ms"); result.put("timeout", true); result.put("executionTime", System.currentTimeMillis()); return result; } private void updateSessionInputStatus(Session session, InputStatus inputStatus) { SharingResultDistributor resultDistributor = session.getResultDistributor(); if (resultDistributor != null) { resultDistributor.appendResult(new InputStatusModel(inputStatus)); } } private Job createJob(String line, Session session, ResultDistributor resultDistributor) { return createJob(CliTokens.tokenize(line), session, resultDistributor); } private synchronized Job createJob(List args, Session session, ResultDistributor resultDistributor) { Job job = jobController.createJob(commandManager, args, session, new JobHandler(session), new McpTerm(session), resultDistributor); return job; } public static class SessionNotFoundException extends RuntimeException { public SessionNotFoundException(String message) { super(message); } } private class JobHandler implements JobListener { private final Session session; public JobHandler(Session session) { this.session = session; } @Override public void onForeground(Job job) { session.setForegroundJob(job); } @Override public void onBackground(Job job) { if (session.getForegroundJob() == job) { session.setForegroundJob(null); updateSessionInputStatus(session, InputStatus.ALLOW_INPUT); session.unLock(); } } @Override public void onTerminated(Job job) { if (session.getForegroundJob() == job) { session.setForegroundJob(null); updateSessionInputStatus(session, InputStatus.ALLOW_INPUT); session.unLock(); } } @Override public void onSuspend(Job job) { if (session.getForegroundJob() == job) { session.setForegroundJob(null); updateSessionInputStatus(session, InputStatus.ALLOW_INPUT); session.unLock(); } } } public static class McpTerm implements Term { private Session session; public McpTerm(Session session) { this.session = session; } @Override public Term resizehandler(Handler handler) { return this; } @Override public String type() { return "mcp"; } @Override public int width() { return 1000; } @Override public int height() { return 200; } @Override public Term stdinHandler(Handler handler) { return this; } @Override public Term stdoutHandler(Function handler) { return this; } @Override public Term write(String data) { return this; } @Override public long lastAccessedTime() { return session.getLastAccessTime(); } @Override public Term echo(String text) { return this; } @Override public Term setSession(Session session) { return this; } @Override public Term interruptHandler(SignalHandler handler) { return this; } @Override public Term suspendHandler(SignalHandler handler) { return this; } @Override public void readline(String prompt, Handler lineHandler) { } @Override public void readline(String prompt, Handler lineHandler, Handler completionHandler) { } @Override public Term closeHandler(Handler handler) { return this; } @Override public void close() { } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/Constants.java ================================================ package com.taobao.arthas.core.command; /** * @author ralf0131 2016-12-14 17:21. * @author hengyunabc 2018-12-03 */ public interface Constants { /** * TODO improve the description */ String EXPRESS_DESCRIPTION = " The express may be one of the following expression (evaluated dynamically):\n" + " target : the object\n" + " clazz : the object's class\n" + " method : the constructor or method\n" + " params : the parameters array of method\n" + " params[0..n] : the element of parameters array\n" + " returnObj : the returned object of method\n" + " throwExp : the throw exception of method\n" + " isReturn : the method ended by return\n" + " isThrow : the method ended by throwing exception\n" + " #cost : the execution time in ms of method invocation"; String EXAMPLE = "\nEXAMPLES:\n"; String WIKI = "\nWIKI:\n"; String WIKI_HOME = " https://arthas.aliyun.com/doc/"; String EXPRESS_EXAMPLES = "Examples:\n" + " params\n" + " params[0]\n" + " 'params[0]+params[1]'\n" + " '{params[0], target, returnObj}'\n" + " returnObj\n" + " throwExp\n" + " target\n" + " clazz\n" + " method\n"; String CONDITION_EXPRESS = "Conditional expression in ognl style, for example:\n" + " TRUE : 1==1\n" + " TRUE : true\n" + " FALSE : false\n" + " TRUE : 'params.length>=0'\n" + " FALSE : 1==2\n" + " '#cost>100'\n"; } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/ScriptSupportCommand.java ================================================ package com.taobao.arthas.core.command; import com.taobao.arthas.core.advisor.Advice; /** * 脚本支持命令 * Created by vlinux on 15/6/1. */ public interface ScriptSupportCommand { /** * 增强脚本监听器 */ interface ScriptListener { /** * 脚本创建 * * @param output 输出器 */ void create(Output output); /** * 脚本销毁 * * @param output 输出器 */ void destroy(Output output); /** * 方法执行前 * * @param output 输出器 * @param advice 通知点 */ void before(Output output, Advice advice); /** * 方法正常返回 * * @param output 输出器 * @param advice 通知点 */ void afterReturning(Output output, Advice advice); /** * 方法异常返回 * * @param output 输出器 * @param advice 通知点 */ void afterThrowing(Output output, Advice advice); } /** * 脚本监听器适配器 */ class ScriptListenerAdapter implements ScriptListener { @Override public void create(Output output) { } @Override public void destroy(Output output) { } @Override public void before(Output output, Advice advice) { } @Override public void afterReturning(Output output, Advice advice) { } @Override public void afterThrowing(Output output, Advice advice) { } } /** * 输出器 */ interface Output { /** * 输出字符串(不换行) * * @param string 待输出字符串 * @return this */ Output print(String string); /** * 输出字符串(换行) * * @param string 待输出字符串 * @return this */ Output println(String string); /** * 结束当前脚本 * * @return this */ Output finish(); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/AuthCommand.java ================================================ package com.taobao.arthas.core.command.basic1000; import javax.security.auth.Subject; import javax.security.auth.login.LoginException; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.taobao.arthas.common.ArthasConstants; import com.taobao.arthas.core.command.Constants; import com.taobao.arthas.core.security.BasicPrincipal; import com.taobao.arthas.core.security.SecurityAuthenticator; import com.taobao.arthas.core.server.ArthasBootstrap; import com.taobao.arthas.core.shell.cli.Completion; import com.taobao.arthas.core.shell.cli.CompletionUtils; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.arthas.core.shell.session.Session; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.DefaultValue; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Option; import com.taobao.middleware.cli.annotations.Summary; /** * TODO 支持更多的鉴权方式。目前只支持 username/password的方式 * * @author hengyunabc 2021-03-03 * */ // @formatter:off @Name(ArthasConstants.AUTH) @Summary("Authenticates the current session") @Description(Constants.EXAMPLE + " auth\n" + " auth \n" + " auth --username \n" + Constants.WIKI + Constants.WIKI_HOME + ArthasConstants.AUTH) //@formatter:on public class AuthCommand extends AnnotatedCommand { private static final Logger logger = LoggerFactory.getLogger(AuthCommand.class); private String username; private String password; private SecurityAuthenticator authenticator = ArthasBootstrap.getInstance().getSecurityAuthenticator(); @Argument(argName = "password", index = 0, required = false) @Description("password") public void setPassword(String password) { this.password = password; } @Option(shortName = "n", longName = "username") @Description("username, default value 'arthas'") @DefaultValue(ArthasConstants.DEFAULT_USERNAME) public void setUsername(String username) { this.username = username; } @Override public void process(CommandProcess process) { int status = 0; String message = ""; try { Session session = process.session(); if (username == null) { status = 1; message = "username can not be empty!"; return; } if (password == null) { // 没有传入password参数时，打印当前结果 boolean authenticated = session.get(ArthasConstants.SUBJECT_KEY) != null; boolean needLogin = this.authenticator.needLogin(); message = "Authentication result: " + authenticated + ", Need authentication: " + needLogin; if (needLogin && !authenticated) { status = 1; } return; } else { // 尝试进行鉴权 BasicPrincipal principal = new BasicPrincipal(username, password); try { Subject subject = authenticator.login(principal); if (subject != null) { // 把subject 保存到 session里，后续其它命令则可以正常执行 session.put(ArthasConstants.SUBJECT_KEY, subject); message = "Authentication result: " + true + ", username: " + username; } else { status = 1; message = "Authentication result: " + false + ", username: " + username; } } catch (LoginException e) { logger.error("Authentication error, username: {}", username, e); } } } finally { process.end(status, message); } } @Override public void complete(Completion completion) { if (!CompletionUtils.completeFilePath(completion)) { super.complete(completion); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/Base64Command.java ================================================ package com.taobao.arthas.core.command.basic1000; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.taobao.arthas.common.IOUtils; import com.taobao.arthas.core.command.Constants; import com.taobao.arthas.core.command.model.Base64Model; import com.taobao.arthas.core.shell.cli.Completion; import com.taobao.arthas.core.shell.cli.CompletionUtils; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Option; import com.taobao.middleware.cli.annotations.Summary; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.handler.codec.base64.Base64; import io.netty.util.CharsetUtil; /** * * @author hengyunabc 2021-01-05 * */ @Name("base64") @Summary("Encode and decode using Base64 representation") @Description(Constants.EXAMPLE + " base64 /tmp/test.txt\n" + " base64 --input /tmp/test.txt --output /tmp/result.txt\n" + " base64 -d /tmp/result.txt\n" + Constants.WIKI + Constants.WIKI_HOME + "base64") public class Base64Command extends AnnotatedCommand { private static final Logger logger = LoggerFactory.getLogger(Base64Command.class); private String file; private int sizeLimit = 128 * 1024; private static final int MAX_SIZE_LIMIT = 8 * 1024 * 1024; private boolean decode; private String input; private String output; @Argument(argName = "file", index = 0, required = false) @Description("file") public void setFiles(String file) { this.file = file; } @Option(shortName = "d", longName = "decode", flag = true) @Description("decodes input") public void setDecode(boolean decode) { this.decode = decode; } @Option(shortName = "i", longName = "input") @Description("input file") public void setInput(String input) { this.input = input; } @Option(shortName = "o", longName = "output") @Description("output file") public void setOutput(String output) { this.output = output; } @Option(shortName = "M", longName = "sizeLimit") @Description("Upper size limit in bytes for the result (128 * 1024 by default, the maximum value is 8 * 1024 * 1024)") public void setSizeLimit(Integer sizeLimit) { this.sizeLimit = sizeLimit; } @Override public void process(CommandProcess process) { if (!verifyOptions(process)) { return; } // 确认输入 if (file == null) { if (this.input != null) { file = input; } else { process.end(-1, ": No file, nor input"); return; } } File f = new File(file); if (!f.exists()) { process.end(-1, file + ": No such file or directory"); return; } if (f.isDirectory()) { process.end(-1, file + ": Is a directory"); return; } if (f.length() > sizeLimit) { process.end(-1, file + ": Is too large, size: " + f.length()); return; } InputStream input = null; ByteBuf convertResult = null; try { input = new FileInputStream(f); byte[] bytes = IOUtils.getBytes(input); if (this.decode) { convertResult = Base64.decode(Unpooled.wrappedBuffer(bytes)); } else { convertResult = Base64.encode(Unpooled.wrappedBuffer(bytes)); } if (this.output != null) { int readableBytes = convertResult.readableBytes(); OutputStream out = new FileOutputStream(this.output); convertResult.readBytes(out, readableBytes); process.appendResult(new Base64Model(null)); } else { String base64Str = convertResult.toString(CharsetUtil.UTF_8); process.appendResult(new Base64Model(base64Str)); } } catch (IOException e) { logger.error("read file error. name: " + file, e); process.end(1, "read file error: " + e.getMessage()); return; } finally { if (convertResult != null) { convertResult.release(); } IOUtils.close(input); } process.end(); } private boolean verifyOptions(CommandProcess process) { if(this.file == null && this.input == null) { process.end(-1); return false; } if (sizeLimit > MAX_SIZE_LIMIT) { process.end(-1, "sizeLimit cannot be large than: " + MAX_SIZE_LIMIT); return false; } // 目前不支持过滤，限制http请求执行的文件大小 int maxSizeLimitOfNonTty = 128 * 1024; if (!process.session().isTty() && sizeLimit > maxSizeLimitOfNonTty) { process.end(-1, "When executing in non-tty session, sizeLimit cannot be large than: " + maxSizeLimitOfNonTty); return false; } return true; } @Override public void complete(Completion completion) { if (!CompletionUtils.completeFilePath(completion)) { super.complete(completion); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/CatCommand.java ================================================ package com.taobao.arthas.core.command.basic1000; import java.io.File; import java.io.IOException; import java.nio.charset.Charset; import java.util.List; import com.taobao.arthas.core.command.model.CatModel; import com.alibaba.arthas.deps.org.slf4j.Logger; import com.alibaba.arthas.deps.org.slf4j.LoggerFactory; import com.taobao.arthas.core.shell.cli.Completion; import com.taobao.arthas.core.shell.cli.CompletionUtils; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.arthas.core.util.FileUtils; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Option; import com.taobao.middleware.cli.annotations.Summary; @Name("cat") @Summary("Concatenate and print files") public class CatCommand extends AnnotatedCommand { private static final Logger logger = LoggerFactory.getLogger(CatCommand.class); private List files; private String encoding; private Integer sizeLimit = 128 * 1024; private int maxSizeLimit = 8 * 1024 * 1024; @Argument(argName = "files", index = 0) @Description("files") public void setFiles(List files) { this.files = files; } @Option(longName = "encoding") @Description("File encoding") public void setEncoding(String encoding) { this.encoding = encoding; } @Option(shortName = "M", longName = "sizeLimit") @Description("Upper size limit in bytes for the result (128 * 1024 by default, the maximum value is 8 * 1024 * 1024)") public void setSizeLimit(Integer sizeLimit) { this.sizeLimit = sizeLimit; } @Override public void process(CommandProcess process) { if (!verifyOptions(process)) { return; } for (String file : files) { File f = new File(file); if (!f.exists()) { process.end(-1, "cat " + file + ": No such file or directory"); return; } if (f.isDirectory()) { process.end(-1, "cat " + file + ": Is a directory"); return; } } for (String file : files) { File f = new File(file); if (f.length() > sizeLimit) { process.end(-1, "cat " + file + ": Is too large, size: " + f.length()); return; } try { String fileToString = FileUtils.readFileToString(f, encoding == null ? Charset.defaultCharset() : Charset.forName(encoding)); process.appendResult(new CatModel(file, fileToString)); } catch (IOException e) { logger.error("cat read file error. name: " + file, e); process.end(1, "cat read file error: " + e.getMessage()); return; } } process.end(); } private boolean verifyOptions(CommandProcess process) { if (sizeLimit > maxSizeLimit) { process.end(-1, "sizeLimit cannot be large than: " + maxSizeLimit); return false; } //目前不支持过滤，限制http请求执行的文件大小 int maxSizeLimitOfNonTty = 128 * 1024; if (!process.session().isTty() && sizeLimit > maxSizeLimitOfNonTty) { process.end(-1, "When executing in non-tty session, sizeLimit cannot be large than: " + maxSizeLimitOfNonTty); return false; } return true; } @Override public void complete(Completion completion) { if (!CompletionUtils.completeFilePath(completion)) { super.complete(completion); } } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/ClsCommand.java ================================================ package com.taobao.arthas.core.command.basic1000; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Summary; import com.taobao.text.util.RenderUtil; @Name("cls") @Summary("Clear the screen") public class ClsCommand extends AnnotatedCommand { @Override public void process(CommandProcess process) { if (!process.session().isTty()) { process.end(-1, "Command 'cls' is only support tty session."); return; } process.write(RenderUtil.cls()).write("\n"); process.end(); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/EchoCommand.java ================================================ package com.taobao.arthas.core.command.basic1000; import com.taobao.arthas.core.command.Constants; import com.taobao.arthas.core.command.model.EchoModel; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Summary; /** * * @author hengyunabc * */ @Name("echo") @Summary("write arguments to the standard output") @Description("\nExamples:\n" + " echo 'abc'\n" + Constants.WIKI + Constants.WIKI_HOME + "echo") public class EchoCommand extends AnnotatedCommand { private String message; @Argument(argName = "message", index = 0, required = false) @Description("message") public void setMessage(String message) { this.message = message; } @Override public void process(CommandProcess process) { if (message != null) { process.appendResult(new EchoModel(message)); } process.end(); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/GrepCommand.java ================================================ package com.taobao.arthas.core.command.basic1000; import com.taobao.arthas.core.command.Constants; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.DefaultValue; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Option; import com.taobao.middleware.cli.annotations.Summary; /** * @see com.taobao.arthas.core.shell.command.internal.GrepHandler */ @Name("grep") @Summary("grep command for pipes." ) @Description(Constants.EXAMPLE + " sysprop | grep java \n" + " sysprop | grep java -n\n" + " sysenv | grep -v JAVA\n" + " sysenv | grep -e \"(?i)(JAVA|sun)\" -m 3 -C 2\n" + " sysenv | grep JAVA -A2 -B3\n" + " thread | grep -m 10 -e \"TIMED_WAITING|WAITING\"\n" + Constants.WIKI + Constants.WIKI_HOME + "grep") public class GrepCommand extends AnnotatedCommand { private String pattern; private boolean ignoreCase; /** * select non-matching lines */ private boolean invertMatch; private boolean isRegEx = false; /** * print line number with output lines */ private boolean showLineNumber = false; private boolean trimEnd; /** * print NUM lines of leading context */ private int beforeLines; /** * print NUM lines of trailing context */ private int afterLines; /** * print NUM lines of output context */ private int context; /** * stop after NUM selected lines */ private int maxCount; @Argument(index = 0, argName = "pattern", required = true) @Description("Pattern") public void setOptionName(String pattern) { this.pattern = pattern; } @Option(shortName = "e", longName = "regex", flag = true) @Description("Enable regular expression to match") public void setRegEx(boolean regEx) { isRegEx = regEx; } @Option(shortName = "i", longName = "ignore-case", flag = true) @Description("Perform case insensitive matching. By default, grep is case sensitive.") public void setIgnoreCase(boolean ignoreCase) { this.ignoreCase = ignoreCase; } @Option(shortName = "v", longName = "invert-match", flag = true) @Description("Select non-matching lines") public void setInvertMatch(boolean invertMatch) { this.invertMatch = invertMatch; } @Option(shortName = "n", longName = "line-number", flag = true) @Description("Print line number with output lines") public void setShowLineNumber(boolean showLineNumber) { this.showLineNumber = showLineNumber; } @Option(longName = "trim-end", flag = false) @DefaultValue("true") @Description("Remove whitespaces at the end of the line, default value true") public void setTrimEnd(boolean trimEnd) { this.trimEnd = trimEnd; } @Option(shortName = "B", longName = "before-context") @Description("Print NUM lines of leading context)") public void setBeforeLines(int beforeLines) { this.beforeLines = beforeLines; } @Option(shortName = "A", longName = "after-context") @Description("Print NUM lines of trailing context)") public void setAfterLines(int afterLines) { this.afterLines = afterLines; } @Option(shortName = "C", longName = "context") @Description("Print NUM lines of output context)") public void setContext(int context) { this.context = context; } @Option(shortName = "m", longName = "max-count") @Description("stop after NUM selected lines)") public void setMaxCount(int maxCount) { this.maxCount = maxCount; } public String getPattern() { return pattern; } public void setPattern(String pattern) { this.pattern = pattern; } public boolean isIgnoreCase() { return ignoreCase; } public boolean isInvertMatch() { return invertMatch; } public boolean isRegEx() { return isRegEx; } public boolean isShowLineNumber() { return showLineNumber; } public boolean isTrimEnd() { return trimEnd; } public int getBeforeLines() { return beforeLines; } public int getAfterLines() { return afterLines; } public int getContext() { return context; } public int getMaxCount() { return maxCount; } @Override public void process(CommandProcess process) { process.end(-1, "The grep command only for pipes. See 'grep --help'\n"); } } ================================================ FILE: core/src/main/java/com/taobao/arthas/core/command/basic1000/HelpCommand.java ================================================ package com.taobao.arthas.core.command.basic1000; import com.taobao.arthas.core.command.model.ArgumentVO; import com.taobao.arthas.core.command.model.CommandOptionVO; import com.taobao.arthas.core.command.model.CommandVO; import com.taobao.arthas.core.command.model.HelpModel; import com.taobao.arthas.core.shell.cli.Completion; import com.taobao.arthas.core.shell.cli.CompletionUtils; import com.taobao.arthas.core.shell.command.AnnotatedCommand; import com.taobao.arthas.core.shell.command.Command; import com.taobao.arthas.core.shell.command.CommandProcess; import com.taobao.arthas.core.shell.command.CommandResolver; import com.taobao.arthas.core.shell.session.Session; import com.taobao.arthas.core.util.usage.StyledUsageFormatter; import com.taobao.middleware.cli.CLI; import com.taobao.middleware.cli.Option; import com.taobao.middleware.cli.annotations.Argument; import com.taobao.middleware.cli.annotations.Description; import com.taobao.middleware.cli.annotations.Name; import com.taobao.middleware.cli.annotations.Summary; import java.util.ArrayList; import java.util.List; /** * @author vlinux on 14/10/26. */ @Name("help") @Summary("Display Arthas Help") @Description("Examples:\n" + " help\n" + " help sc\n" + " help sm\n" + " help watch") public class HelpCommand extends AnnotatedCommand { private String cmd; @Argument(index = 0, argName = "cmd", required = false) @Description("command name") public void setCmd(String cmd) { this.cmd = cmd; } @Override public void process(CommandProcess process) { List commands = allCommands(process.session()); Command targetCmd = findCommand(commands); if (targetCmd == null) { process.appendResult(createHelpModel(commands)); } else { process.appendResult(createHelpDetailModel(targetCmd)); } process.end(); } public HelpModel createHelpDetailModel(Command targetCmd) { return new HelpModel(createCommandVO(targetCmd, true)); } private HelpModel createHelpModel(List commands) { HelpModel helpModel = new HelpModel(); for (Command command : commands) { if(command.cli() == null || command.cli().isHidden()){ continue; } helpModel.addCommandVO(createCommandVO(command, false)); } return helpModel; } private CommandVO createCommandVO(Command command, boolean withDetail) { CLI cli = command.cli(); CommandVO commandVO = new CommandVO(); commandVO.setName(command.name()); if (cli!=null){ commandVO.setSummary(cli.getSummary()); if (withDetail){ commandVO.setCli(cli); StyledUsageFormatter usageFormatter = new StyledUsageFormatter(null); String usageLine = usageFormatter.computeUsageLine(null, cli); commandVO.setUsage(usageLine); commandVO.setDescription(cli.getDescription()); //以线程安全的方式遍历options List