[
{
"path": ".gitignore",
"content": "target/\n*.log.gz\n*.iml\n.idea/\n*.log\n*.db\n/target\ntarget\n\n*.class\n\n# Mobile Tools for Java (J2ME)\n.mtj.tmp/\n\n# Package Files #\n*.jar\n*.war\n*.ear\n\n# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml\nhs_err_pid*"
},
{
"path": "LICENSE",
"content": " Apache License\n Version 2.0, January 2004\n http://www.apache.org/licenses/\n\n TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION\n\n 1. Definitions.\n\n \"License\" shall mean the terms and conditions for use, reproduction,\n and distribution as defined by Sections 1 through 9 of this document.\n\n \"Licensor\" shall mean the copyright owner or entity authorized by\n the copyright owner that is granting the License.\n\n \"Legal Entity\" shall mean the union of the acting entity and all\n other entities that control, are controlled by, or are under common\n control with that entity. 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},
{
"path": "README.md",
"content": "# spring-cloud-netflix-zuul-websocket\nA simple library to enable Zuul reverse proxy web socket support in spring applications.\n\n## USAGE\n\nspring-cloud-netflix-zuul-websocket is available from **Maven Central**\n\n```xml\n\n com.github.mthizo247\n spring-cloud-netflix-zuul-websocket\n 1.0.0-RELEASE\n\n```\n\n### Who is this for?\n\nThis is for anyone using **Spring Netflix Zuul** to proxy requests to back-ends which supports web sockets but the proxy layer does not.\n**Netflix Zuul** does not natively support web sockets.\n\n### How do I use this?\n\nEnable it like so:\n\n```java\n@SpringBootApplication\n@EnableZuulWebSocket\n@EnableWebSocketMessageBroker\npublic class ProxyApplication {\n\tpublic static void main(String[] args) {\n\t\tSpringApplication.run(ProxyApplication.class, args);\n\t}\n}\n```\n\nThen in your spring application properties(e.g application.yml)\n\n```\nserver:\n port: 7078\n\nzuul:\n routes:\n hello:\n path: /**\n url: http://localhost:7079\n customSensitiveHeaders: true\n ws:\n brokerages:\n hello:\n end-points: /ws\n brokers: /topic\n destination-prefixes: /app\n```\n\nWith this you should have web sockets to your back-end service working correctly.\n\n**Checkout** this [demo](https://github.com/mthizo247/zuul-websocket-support-demo)\n"
},
{
"path": "eclipse-code-formatter.xml",
"content": "\n\n\n\n\n\n\n\n\n\n"
},
{
"path": "pom.xml",
"content": "\n\n 4.0.0\n\n com.github.mthizo247\n spring-cloud-netflix-zuul-websocket\n jar\n 1.0.7.RELEASE\n Spring Cloud Netflix Zuul Websocket\n Spring Cloud Netflix Zuul Websocket\n https://www.discovery.co.za\n 2017\n\n \n \n The Apache Software License, Version 2.0\n http://www.apache.org/licenses/LICENSE-2.0.txt\n repo\n \n \n\n \n \n mthizo247@gmail.com\n Ronald Mthombeni\n mthizo247@gmail.com\n Discovery inc.\n http://www.discovery.co.za\n \n \n salmannoor74415\n Salman Noor\n salmannoor74415@gmail.com\n Discovery inc.\n http://www.discovery.co.za\n \n \n\n \n scm:git:git://github.com/mthizo247/spring-cloud-netflix-zuul-websocket\n scm:git:git://github.com/mthizo247/spring-cloud-netflix-zuul-websocket\n \n https://github.com/mthizo247/spring-cloud-netflix-zuul-websocket.git\n \n\n \n https://github.com/mthizo247/spring-cloud-netflix-zuul-websocket/issues\n GitHub Issues\n \n\n \n org.springframework.boot\n spring-boot-starter-parent\n 1.5.10.RELEASE\n \n \n\n \n UTF-8\n 1.7\n \n\n \n \n ossrh\n https://oss.sonatype.org/service/local/staging/deploy/maven2\n \n \n ossrh\n https://oss.sonatype.org/content/repositories/snapshots\n \n \n\n \n \n org.springframework.boot\n spring-boot-starter-websocket\n provided\n \n \n org.springframework.cloud\n spring-cloud-starter-zuul\n 1.1.5.RELEASE\n provided\n \n \n org.springframework.boot\n spring-boot-starter-security\n provided\n \n \n org.springframework.security.oauth\n spring-security-oauth2\n provided\n \n \n org.springframework.boot\n spring-boot-starter-test\n test\n \n \n\n \n \n \n \n org.apache.maven.plugins\n maven-release-plugin\n 2.5.3\n \n false\n release\n deploy\n \n \n \n \n \n \n org.sonatype.plugins\n nexus-staging-maven-plugin\n 1.6.3\n true\n \n ossrh\n https://oss.sonatype.org/\n true\n 5820c8da7e998d\n \n \n \n \n\n \n \n release\n \n \n \n org.apache.maven.plugins\n maven-release-plugin\n 2.5.3\n \n true\n \n \n \n org.apache.maven.plugins\n maven-source-plugin\n 3.0.1\n \n \n attach-sources\n \n jar\n \n \n \n \n \n org.apache.maven.plugins\n maven-javadoc-plugin\n 2.10.3\n \n \n attach-javadocs\n \n jar\n \n \n \n \n \n org.apache.maven.plugins\n maven-gpg-plugin\n 1.5\n \n \n sign-artifacts\n verify\n \n sign\n \n \n \n \n \n \n \n \n\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/authentication/AbstractHeadersCallback.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.authentication;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.WebSocketHttpHeadersCallback;\nimport org.apache.commons.logging.Log;\nimport org.apache.commons.logging.LogFactory;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\n\n/**\n * @author Ronald Mthombeni\n */\npublic abstract class AbstractHeadersCallback implements WebSocketHttpHeadersCallback {\n protected final Log logger = LogFactory.getLog(getClass());\n\n @Override\n public void applyHeaders(\n WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n if (shouldApplyHeaders(userAgentSession, headers)) {\n applyHeadersInternal(userAgentSession, headers);\n }\n }\n\n protected abstract void applyHeadersInternal(WebSocketSession userAgentSession, WebSocketHttpHeaders headers);\n\n protected abstract boolean shouldApplyHeaders(WebSocketSession userAgentSession, WebSocketHttpHeaders headers);\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/authentication/BasicAuthPrincipalHeadersCallback.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.authentication;\n\nimport org.springframework.http.HttpHeaders;\nimport org.springframework.security.core.Authentication;\nimport org.springframework.security.crypto.codec.Base64;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\n\nimport java.util.Collections;\n\n/**\n * @author Ronald Mthombeni\n */\npublic class BasicAuthPrincipalHeadersCallback extends AbstractHeadersCallback {\n @Override\n protected void applyHeadersInternal(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n Authentication authentication = (Authentication) userAgentSession.getPrincipal();\n String usernameColonPwd = authentication.getName() + \":\"\n + authentication.getCredentials().toString();\n String encodedCredentials = new String(\n Base64.encode(usernameColonPwd.getBytes()));\n headers.put(HttpHeaders.AUTHORIZATION,\n Collections.singletonList(\"Basic \" + encodedCredentials));\n if (logger.isDebugEnabled()) {\n logger.debug(\"Added basic authentication header for user \" + authentication.getName() + \" to web sockets http headers\");\n }\n }\n\n @Override\n protected boolean shouldApplyHeaders(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n return !headers.containsKey(HttpHeaders.AUTHORIZATION) && userAgentSession.getPrincipal() instanceof Authentication;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/authentication/CompositeHeadersCallback.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.authentication;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.WebSocketHttpHeadersCallback;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\n\nimport java.util.List;\n\n/**\n * Strategy to add different types of headers to web socket connections\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class CompositeHeadersCallback implements WebSocketHttpHeadersCallback {\n private List headersCallbacks;\n\n public CompositeHeadersCallback(final List headersCallbacks) {\n this.headersCallbacks = headersCallbacks;\n }\n\n\n @Override\n public void applyHeaders(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n for (WebSocketHttpHeadersCallback callback : headersCallbacks) {\n callback.applyHeaders(userAgentSession, headers);\n }\n }\n\n public List getHeadersCallbacks() {\n return headersCallbacks;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/authentication/LoginCookieHeadersCallback.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.authentication;\n\nimport org.apache.commons.logging.Log;\nimport org.apache.commons.logging.LogFactory;\nimport org.springframework.http.HttpHeaders;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\n\nimport java.util.List;\n\n/**\n * @author Ronald Mthombeni\n */\npublic class LoginCookieHeadersCallback extends AbstractHeadersCallback {\n protected final Log logger = LogFactory.getLog(getClass());\n\n @Override\n protected void applyHeadersInternal(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n List sessionCookies = userAgentSession.getHandshakeHeaders().get(HttpHeaders.COOKIE);\n headers.put(HttpHeaders.COOKIE, sessionCookies);\n if (logger.isDebugEnabled()) {\n logger.debug(\"Added cookie authentication header to web sockets http headers\");\n }\n }\n\n @Override\n protected boolean shouldApplyHeaders(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n return !headers.containsKey(HttpHeaders.COOKIE) && userAgentSession.getHandshakeHeaders().containsKey(HttpHeaders.COOKIE);\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/authentication/OAuth2BearerPrincipalHeadersCallback.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.authentication;\n\nimport org.springframework.http.HttpHeaders;\nimport org.springframework.security.oauth2.provider.OAuth2Authentication;\nimport org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationDetails;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\n\nimport java.util.Collections;\n\n/**\n * @author Marcin Podlodowski\n */\npublic class OAuth2BearerPrincipalHeadersCallback extends AbstractHeadersCallback {\n\n @Override\n protected void applyHeadersInternal(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n OAuth2Authentication oAuth2Authentication = (OAuth2Authentication) userAgentSession.getPrincipal();\n OAuth2AuthenticationDetails details = (OAuth2AuthenticationDetails) oAuth2Authentication.getDetails();\n String accessToken = details.getTokenValue();\n headers.put(HttpHeaders.AUTHORIZATION, Collections.singletonList(\"Bearer \" + accessToken));\n if (logger.isDebugEnabled()) {\n logger.debug(\"Added Oauth2 bearer token authentication header for user \" +\n oAuth2Authentication.getName() + \" to web sockets http headers\");\n }\n }\n\n @Override\n protected boolean shouldApplyHeaders(WebSocketSession userAgentSession, WebSocketHttpHeaders headers) {\n return !headers.containsKey(HttpHeaders.AUTHORIZATION) && userAgentSession.getPrincipal() instanceof OAuth2Authentication;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/filter/ProxyRedirectFilter.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.filter;\n\nimport java.util.List;\n\nimport javax.servlet.http.HttpServletRequest;\n\nimport org.springframework.cloud.netflix.zuul.filters.Route;\nimport org.springframework.cloud.netflix.zuul.filters.RouteLocator;\nimport org.springframework.web.servlet.support.ServletUriComponentsBuilder;\nimport org.springframework.web.util.UriComponents;\nimport org.springframework.web.util.UrlPathHelper;\n\nimport com.netflix.util.Pair;\nimport com.netflix.zuul.ZuulFilter;\nimport com.netflix.zuul.context.RequestContext;\n\n/**\n * @author Ronald Mthombeni\n */\npublic class ProxyRedirectFilter extends ZuulFilter {\n\tprivate static String REDIRECT_TO_URL = \"REDIRECT_TO_URL_\"\n\t\t\t+ ProxyRedirectFilter.class.getName();\n\n\tRouteLocator routeLocator;\n\tUrlPathHelper urlPathHelper;\n\n\tpublic ProxyRedirectFilter(RouteLocator routeLocator) {\n\t\tthis(routeLocator, new UrlPathHelper());\n\t}\n\n\tpublic ProxyRedirectFilter(RouteLocator routeLocator, UrlPathHelper urlPathHelper) {\n\t\tthis.routeLocator = routeLocator;\n\t\tthis.urlPathHelper = urlPathHelper;\n\t}\n\n\t@Override\n\tpublic String filterType() {\n\t\treturn \"post\";\n\t}\n\n\t@Override\n\tpublic int filterOrder() {\n\t\treturn 1;\n\t}\n\n\t@Override\n\tpublic boolean shouldFilter() {\n\t\tRequestContext ctx = RequestContext.getCurrentContext();\n\t\tboolean isRedirect = ctx.getResponseStatusCode() == 301 || ctx.getResponseStatusCode() == 302;\n\t\tif (!isRedirect)\n\t\t\treturn false;\n\n\t\tboolean hasCorrectLocation = false;\n\n\t\tList> zuulResponseHeaders = ctx.getZuulResponseHeaders();\n\t\tfor (Pair zuulResponseHeader : zuulResponseHeaders) {\n\t\t\tif (\"Location\".equalsIgnoreCase(zuulResponseHeader.first())) {\n\t\t\t\tHttpServletRequest request = ctx.getRequest();\n\t\t\t\tString path = urlPathHelper.getPathWithinApplication(request);\n\t\t\t\tRoute route = routeLocator.getMatchingRoute(path);\n\t\t\t\tUriComponents redirectTo = ServletUriComponentsBuilder\n\t\t\t\t\t\t.fromHttpUrl(zuulResponseHeader.second()).build();\n\t\t\t\tUriComponents routeLocation = ServletUriComponentsBuilder\n\t\t\t\t\t\t.fromHttpUrl(route.getLocation()).build();\n\n\t\t\t\tif (redirectTo.getHost().equalsIgnoreCase(routeLocation.getHost())\n\t\t\t\t\t\t&& redirectTo.getPort() == routeLocation.getPort()) {\n\t\t\t\t\tString toLocation = ServletUriComponentsBuilder\n\t\t\t\t\t\t\t.fromHttpUrl(zuulResponseHeader.second())\n\t\t\t\t\t\t\t.host(request.getServerName())\n\t\t\t\t\t\t\t.port(request.getServerPort())\n\t\t\t\t\t\t\t.replacePath(\n\t\t\t\t\t\t\t\t\tbuildRoutePath(route, zuulResponseHeader.second()))\n\t\t\t\t\t\t\t.build().toUriString();\n\n\t\t\t\t\tctx.put(REDIRECT_TO_URL, toLocation);\n\t\t\t\t\thasCorrectLocation = true;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn hasCorrectLocation;\n\t}\n\n\t@Override\n\tpublic Object run() {\n\t\tRequestContext ctx = RequestContext.getCurrentContext();\n\t\tList> zuulResponseHeaders = ctx.getZuulResponseHeaders();\n\t\tfor (Pair zuulResponseHeader : zuulResponseHeaders) {\n\t\t\tif (\"Location\".equalsIgnoreCase(zuulResponseHeader.first())) {\n\t\t\t\tzuulResponseHeader.setSecond(ctx.get(REDIRECT_TO_URL).toString());\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t\treturn null;\n\t}\n\n\tprivate String buildRoutePath(Route route, String httpUrl) {\n\t\tString path = ServletUriComponentsBuilder.fromHttpUrl(httpUrl).build().getPath();\n\n\t\treturn route.getPrefix() == null ? path : route.getPrefix() + path;\n\t}\n\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/proxytarget/AbstractProxyTargetResolver.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.proxytarget;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.ZuulWebSocketProperties;\nimport com.github.mthizo247.cloud.netflix.zuul.web.util.MapPropertyResolver;\nimport org.springframework.boot.bind.RelaxedPropertyResolver;\nimport org.springframework.cloud.client.ServiceInstance;\nimport org.springframework.cloud.netflix.zuul.filters.ZuulProperties;\nimport org.springframework.core.Ordered;\nimport org.springframework.util.Assert;\nimport org.springframework.web.util.UriComponentsBuilder;\n\nimport java.net.URI;\nimport java.util.HashMap;\nimport java.util.Map;\n\n/**\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic abstract class AbstractProxyTargetResolver implements ProxyTargetResolver, Ordered {\n protected ZuulProperties zuulProperties;\n protected int order = 0;\n\n public AbstractProxyTargetResolver(ZuulProperties zuulProperties) {\n Assert.notNull(zuulProperties, \"zuulProperties must not be null\");\n this.zuulProperties = zuulProperties;\n }\n\n protected ZuulProperties.ZuulRoute resolveRoute(ZuulWebSocketProperties.WsBrokerage wsBrokerage) {\n\n ZuulProperties.ZuulRoute zuulRoute = zuulProperties.getRoutes().get(wsBrokerage.getRouteId());\n zuulRoute = zuulRoute == null ? zuulProperties.getRoutes().get(wsBrokerage.getId()) : zuulRoute;\n return zuulRoute;\n }\n\n protected URI resolveUri(ServiceInstance serviceInstance) {\n Map metadata = new HashMap<>();\n for (Map.Entry entry : serviceInstance.getMetadata().entrySet()) {\n metadata.put(entry.getKey(), entry.getValue());\n }\n\n UriComponentsBuilder uriBuilder = UriComponentsBuilder.fromUri(serviceInstance.getUri());\n RelaxedPropertyResolver propertyResolver = new RelaxedPropertyResolver(new MapPropertyResolver(metadata));\n String configPath = propertyResolver.getProperty(\"configPath\");\n if (configPath != null) {\n uriBuilder.path(configPath);\n }\n\n return uriBuilder.build().toUri();\n }\n\n @Override\n public int getOrder() {\n return order;\n }\n\n public void setOrder(int order) {\n this.order = order;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/proxytarget/CompositeProxyTargetResolver.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.proxytarget;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.ZuulWebSocketProperties;\n\nimport java.net.URI;\nimport java.util.List;\n\n/**\n * Strategy to resolve zuul proxy target using delegation pattern\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class CompositeProxyTargetResolver implements ProxyTargetResolver {\n private List targetResolvers;\n\n public CompositeProxyTargetResolver(final List targetResolvers) {\n this.targetResolvers = targetResolvers;\n }\n\n @Override\n public URI resolveTarget(ZuulWebSocketProperties.WsBrokerage wsBrokerage) {\n URI target = null;\n for (ProxyTargetResolver resolver : targetResolvers) {\n target = resolver.resolveTarget(wsBrokerage);\n if (target != null)\n break;\n }\n\n return target;\n }\n\n public List getTargetResolvers() {\n return targetResolvers;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/proxytarget/EurekaProxyTargetResolver.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.proxytarget;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.ZuulWebSocketProperties;\nimport org.springframework.cloud.client.ServiceInstance;\nimport org.springframework.cloud.client.discovery.DiscoveryClient;\nimport org.springframework.cloud.netflix.zuul.filters.ZuulProperties;\nimport org.springframework.util.Assert;\nimport org.springframework.util.CollectionUtils;\nimport org.springframework.util.StringUtils;\n\nimport java.net.URI;\nimport java.util.List;\n\n/**\n * Strategy to resolve zuul properties from route service is using eaureka service discovery\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class EurekaProxyTargetResolver extends AbstractProxyTargetResolver {\n public static final int DEFAULT_ORDER = LoadBalancedProxyTargetResolver.DEFAULT_ORDER + 10;\n private DiscoveryClient discoveryClient;\n\n public EurekaProxyTargetResolver(DiscoveryClient discoveryClient, ZuulProperties zuulProperties) {\n super(zuulProperties);\n Assert.notNull(discoveryClient, \"discoveryClient can't be null\");\n this.discoveryClient = discoveryClient;\n this.order = DEFAULT_ORDER;\n }\n\n\n @Override\n public URI resolveTarget(ZuulWebSocketProperties.WsBrokerage wsBrokerage) {\n ZuulProperties.ZuulRoute zuulRoute = resolveRoute(wsBrokerage);\n if (zuulRoute == null || StringUtils.isEmpty(zuulRoute.getServiceId())) return null;\n\n List instances = discoveryClient.getInstances(zuulRoute.getServiceId());\n ServiceInstance serviceInstance = CollectionUtils.isEmpty(instances) ? null : instances.get(0);\n return serviceInstance != null ? resolveUri(serviceInstance) : null;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/proxytarget/LoadBalancedProxyTargetResolver.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.proxytarget;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.ZuulWebSocketProperties;\nimport org.springframework.cloud.client.ServiceInstance;\nimport org.springframework.cloud.client.loadbalancer.LoadBalancerClient;\nimport org.springframework.cloud.netflix.zuul.filters.ZuulProperties;\nimport org.springframework.util.Assert;\nimport org.springframework.util.StringUtils;\n\nimport java.net.URI;\n\n/**\n * Strategy to resolve zuul proxy target from a load balanced client\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class LoadBalancedProxyTargetResolver extends AbstractProxyTargetResolver {\n public static final int DEFAULT_ORDER = HIGHEST_PRECEDENCE + 10;\n\n private LoadBalancerClient loadBalancerClient;\n\n public LoadBalancedProxyTargetResolver(LoadBalancerClient loadBalancerClient, ZuulProperties zuulProperties) {\n super(zuulProperties);\n Assert.notNull(loadBalancerClient, \"loadBalancerClient can't be null\");\n this.loadBalancerClient = loadBalancerClient;\n this.order = DEFAULT_ORDER;\n }\n\n @Override\n public URI resolveTarget(ZuulWebSocketProperties.WsBrokerage wsBrokerage) {\n ZuulProperties.ZuulRoute zuulRoute = resolveRoute(wsBrokerage);\n if (zuulRoute == null || StringUtils.isEmpty(zuulRoute.getServiceId())) return null;\n\n ServiceInstance serviceInstance = loadBalancerClient.choose(zuulRoute.getServiceId());\n return serviceInstance != null ? resolveUri(serviceInstance) : null;\n }\n\n\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/proxytarget/ProxyTargetResolver.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.proxytarget;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.ZuulWebSocketProperties;\n\nimport java.net.URI;\n\n/**\n * Strategy to resolve zuul proxy target\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic interface ProxyTargetResolver {\n URI resolveTarget(ZuulWebSocketProperties.WsBrokerage wsBrokerage);\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/proxytarget/UrlProxyTargetResolver.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.proxytarget;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.socket.ZuulWebSocketProperties;\nimport org.springframework.cloud.netflix.zuul.filters.ZuulProperties;\nimport org.springframework.util.StringUtils;\n\nimport java.net.URI;\nimport java.net.URISyntaxException;\n\n/**\n * Strategy to resolve zuul proxy target from a load balanced client\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class UrlProxyTargetResolver extends AbstractProxyTargetResolver {\n public static final int DEFAULT_ORDER = EurekaProxyTargetResolver.DEFAULT_ORDER + 10;\n\n public UrlProxyTargetResolver(ZuulProperties zuulProperties) {\n super(zuulProperties);\n this.order = DEFAULT_ORDER;\n }\n\n @Override\n public URI resolveTarget(ZuulWebSocketProperties.WsBrokerage wsBrokerage) {\n ZuulProperties.ZuulRoute zuulRoute = resolveRoute(wsBrokerage);\n if (zuulRoute == null || StringUtils.isEmpty(zuulRoute.getUrl())) return null;\n\n try {\n return new URI(zuulRoute.getUrl());\n } catch (URISyntaxException e) {\n throw new RuntimeException(e);\n }\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/CompositeErrorHandler.java",
"content": "package com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.apache.commons.logging.Log;\nimport org.apache.commons.logging.LogFactory;\n\nimport java.util.List;\n\n/**\n * Created by ronald22 on 06/04/2017.\n */\npublic class CompositeErrorHandler implements ProxyWebSocketErrorHandler {\n protected final Log logger = LogFactory.getLog(getClass());\n private final List errorHandlers;\n\n public CompositeErrorHandler(final List handlers) {\n this.errorHandlers = handlers;\n }\n\n @Override\n public void handleError(Throwable t) {\n for (ProxyWebSocketErrorHandler handler : errorHandlers) {\n callErrorHandler(handler, t);\n }\n\n }\n\n private void callErrorHandler(ProxyWebSocketErrorHandler handler, Throwable t) {\n try {\n handler.handleError(t);\n } catch (Throwable e) {\n logger.error(\"Error executing error handler \" + handler, e);\n }\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/EnableZuulWebSocket.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.springframework.cloud.netflix.zuul.EnableZuulProxy;\nimport org.springframework.context.annotation.Import;\nimport org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;\n\nimport java.lang.annotation.Documented;\nimport java.lang.annotation.ElementType;\nimport java.lang.annotation.Retention;\nimport java.lang.annotation.RetentionPolicy;\nimport java.lang.annotation.Target;\n\n/**\n * Sets up a Zuul web socket configuration so that it can bridge web socket communication\n * to backend servers.\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\n@Target(ElementType.TYPE)\n@Retention(RetentionPolicy.RUNTIME)\n@Documented\n@EnableZuulProxy\n@EnableWebSocketMessageBroker\n@Import(ZuulWebSocketConfiguration.class)\npublic @interface EnableZuulWebSocket {\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ProxySessionException.java",
"content": "package com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.springframework.messaging.simp.stomp.StompSession;\n\n/**\n * Created by ronald22 on 06/04/2017.\n */\npublic class ProxySessionException extends Exception {\n\tprivate final ProxyWebSocketConnectionManager connectionManager;\n\tprivate final StompSession session;\n\n\tpublic ProxySessionException(ProxyWebSocketConnectionManager connectionManager,\n\t\t\tStompSession session, Throwable cause) {\n\t\tsuper(cause);\n\t\tthis.connectionManager = connectionManager;\n\t\tthis.session = session;\n\t}\n\n\tpublic ProxyWebSocketConnectionManager getConnectionManager() {\n\t\treturn connectionManager;\n\t}\n\n\tpublic StompSession getSession() {\n\t\treturn session;\n\t}\n\n\t@Override\n\tpublic boolean equals(Object o) {\n\t\tif (this == o) return true;\n\t\tif (o == null || getClass() != o.getClass()) return false;\n\n\t\tProxySessionException that = (ProxySessionException) o;\n\n\t\tif (connectionManager != null ? !connectionManager.equals(that.connectionManager) : that.connectionManager != null)\n\t\t\treturn false;\n\t\treturn session != null ? session.equals(that.session) : that.session == null;\n\t}\n\n\t@Override\n\tpublic int hashCode() {\n\t\tint result = connectionManager != null ? connectionManager.hashCode() : 0;\n\t\tresult = 31 * result + (session != null ? session.hashCode() : 0);\n\t\treturn result;\n\t}\n\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ProxyWebSocketConnectionManager.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.springframework.messaging.simp.SimpMessagingTemplate;\nimport org.springframework.messaging.simp.stomp.StompCommand;\nimport org.springframework.messaging.simp.stomp.StompHeaders;\nimport org.springframework.messaging.simp.stomp.StompSession;\nimport org.springframework.messaging.simp.stomp.StompSessionHandler;\nimport org.springframework.util.ErrorHandler;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\nimport org.springframework.web.socket.client.ConnectionManagerSupport;\nimport org.springframework.web.socket.messaging.WebSocketStompClient;\n\nimport java.lang.reflect.Type;\nimport java.security.Principal;\nimport java.util.HashMap;\nimport java.util.HashSet;\nimport java.util.Map;\nimport java.util.Set;\nimport java.util.concurrent.ConcurrentHashMap;\n\n/**\n * A web socket connection manager bridge between client and backend server via zuul\n * reverse proxy\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class ProxyWebSocketConnectionManager extends ConnectionManagerSupport\n implements StompSessionHandler {\n private final WebSocketStompClient stompClient;\n private final WebSocketSession userAgentSession;\n private final WebSocketHttpHeadersCallback httpHeadersCallback;\n private StompSession serverSession;\n private Map subscriptions = new ConcurrentHashMap<>();\n private ErrorHandler errorHandler;\n private SimpMessagingTemplate messagingTemplate;\n\n public ProxyWebSocketConnectionManager(SimpMessagingTemplate messagingTemplate,\n WebSocketStompClient stompClient, WebSocketSession userAgentSession,\n WebSocketHttpHeadersCallback httpHeadersCallback, String uri) {\n super(uri);\n this.messagingTemplate = messagingTemplate;\n this.stompClient = stompClient;\n this.userAgentSession = userAgentSession;\n this.httpHeadersCallback = httpHeadersCallback;\n }\n\n public void errorHandler(ErrorHandler errorHandler) {\n this.errorHandler = errorHandler;\n }\n\n private WebSocketHttpHeaders buildWebSocketHttpHeaders() {\n WebSocketHttpHeaders wsHeaders = new WebSocketHttpHeaders();\n if (httpHeadersCallback != null) {\n httpHeadersCallback.applyHeaders(userAgentSession, wsHeaders);\n }\n return wsHeaders;\n }\n\n @Override\n protected void openConnection() {\n connect();\n }\n\n public void connect() {\n try {\n serverSession = stompClient\n .connect(getUri().toString(), buildWebSocketHttpHeaders(), this)\n .get();\n } catch (Exception e) {\n logger.error(\"Error connecting to web socket uri \" + getUri(), e);\n throw new RuntimeException(e);\n }\n }\n\n public void reconnect(final long delay) {\n if (delay > 0) {\n logger.warn(\"Connection lost or refused, will attempt to reconnect after \"\n + delay + \" millis\");\n try {\n Thread.sleep(delay);\n } catch (InterruptedException e) {\n //\n }\n }\n\n Set destinations = new HashSet<>(subscriptions.keySet());\n\n connect();\n\n for (String destination : destinations) {\n try {\n subscribe(destination);\n } catch (Exception ignored) {\n // nothing\n }\n }\n }\n\n @Override\n protected void closeConnection() throws Exception {\n if (isConnected()) {\n this.serverSession.disconnect();\n }\n }\n\n @Override\n protected boolean isConnected() {\n return (this.serverSession != null && this.serverSession.isConnected());\n }\n\n @Override\n public void afterConnected(StompSession session, StompHeaders connectedHeaders) {\n if (logger.isDebugEnabled()) {\n logger.debug(\"Proxied target now connected \" + session);\n }\n }\n\n @Override\n public void handleException(StompSession session, StompCommand command,\n StompHeaders headers, byte[] payload, Throwable ex) {\n if (errorHandler != null) {\n errorHandler.handleError(new ProxySessionException(this, session, ex));\n }\n }\n\n @Override\n public void handleTransportError(StompSession session, Throwable ex) {\n if (errorHandler != null) {\n errorHandler.handleError(new ProxySessionException(this, session, ex));\n }\n }\n\n @Override\n public Type getPayloadType(StompHeaders headers) {\n return Object.class;\n }\n\n public void sendMessage(final String destination, final Object msg) {\n if (msg instanceof String) { // in case of a json string to avoid double\n // converstion by the converters\n serverSession.send(destination, ((String) msg).getBytes());\n return;\n }\n\n serverSession.send(destination, msg);\n }\n\n @Override\n public void handleFrame(StompHeaders headers, Object payload) {\n if (headers.getDestination() != null) {\n String destination = headers.getDestination();\n if (logger.isDebugEnabled()) {\n logger.debug(\"Received \" + payload + \", To \" + headers.getDestination());\n }\n\n Principal principal = userAgentSession.getPrincipal();\n String userDestinationPrefix = messagingTemplate.getUserDestinationPrefix();\n if (principal != null && destination.startsWith(userDestinationPrefix)) {\n destination = destination.substring(userDestinationPrefix.length());\n\n destination = destination.startsWith(\"/\") ? destination\n : \"/\" + destination;\n\n messagingTemplate.convertAndSendToUser(principal.getName(), destination,\n payload, copyHeaders(headers.toSingleValueMap()));\n } else {\n messagingTemplate.convertAndSend(destination, payload,\n copyHeaders(headers.toSingleValueMap()));\n }\n }\n }\n\n private Map copyHeaders(Map original) {\n Map copy = new HashMap<>();\n for (String key : original.keySet()) {\n copy.put(key, original.get(key));\n }\n\n return copy;\n }\n\n private void connectIfNecessary() {\n if (!isConnected()) {\n connect();\n }\n }\n\n public void subscribe(String destination) throws Exception {\n connectIfNecessary();\n StompSession.Subscription subscription = serverSession.subscribe(destination,\n this);\n subscriptions.put(destination, subscription);\n }\n\n public void unsubscribe(String destination) {\n StompSession.Subscription subscription = subscriptions.remove(destination);\n if (subscription != null) {\n connectIfNecessary();\n subscription.unsubscribe();\n }\n }\n\n public boolean isConnectedToUserAgent() {\n return (userAgentSession != null && userAgentSession.isOpen());\n }\n\n public void disconnect() {\n try {\n closeConnection();\n } catch (Exception e) {\n // nothing\n }\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ProxyWebSocketErrorHandler.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.springframework.util.ErrorHandler;\n\n/**\n * A simple tagging interface for pluggable web socket connection error handlers\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic interface ProxyWebSocketErrorHandler extends ErrorHandler {\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ProxyWebSocketHandler.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.proxytarget.ProxyTargetResolver;\nimport org.slf4j.Logger;\nimport org.slf4j.LoggerFactory;\nimport org.springframework.messaging.simp.SimpMessagingTemplate;\nimport org.springframework.messaging.simp.stomp.StompCommand;\nimport org.springframework.util.Assert;\nimport org.springframework.util.ErrorHandler;\nimport org.springframework.util.PatternMatchUtils;\nimport org.springframework.web.servlet.support.ServletUriComponentsBuilder;\nimport org.springframework.web.socket.CloseStatus;\nimport org.springframework.web.socket.WebSocketHandler;\nimport org.springframework.web.socket.WebSocketMessage;\nimport org.springframework.web.socket.WebSocketSession;\nimport org.springframework.web.socket.handler.WebSocketHandlerDecorator;\nimport org.springframework.web.socket.messaging.WebSocketStompClient;\nimport org.springframework.web.util.UriComponentsBuilder;\n\nimport java.net.URI;\nimport java.util.Map;\nimport java.util.concurrent.ConcurrentHashMap;\n\n/**\n * A {@link WebSocketHandlerDecorator} that adds web socket support to zuul reverse proxy.\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class ProxyWebSocketHandler extends WebSocketHandlerDecorator {\n private final Logger logger = LoggerFactory.getLogger(ProxyWebSocketHandler.class);\n private final WebSocketHttpHeadersCallback headersCallback;\n private final SimpMessagingTemplate messagingTemplate;\n private final ProxyTargetResolver proxyTargetResolver;\n private final ZuulWebSocketProperties zuulWebSocketProperties;\n private final WebSocketStompClient stompClient;\n private final Map managers = new ConcurrentHashMap<>();\n private ErrorHandler errorHandler;\n\n public ProxyWebSocketHandler(WebSocketHandler delegate,\n WebSocketStompClient stompClient,\n WebSocketHttpHeadersCallback headersCallback,\n SimpMessagingTemplate messagingTemplate,\n ProxyTargetResolver proxyTargetResolver,\n ZuulWebSocketProperties zuulWebSocketProperties) {\n super(delegate);\n this.stompClient = stompClient;\n this.headersCallback = headersCallback;\n this.messagingTemplate = messagingTemplate;\n this.proxyTargetResolver = proxyTargetResolver;\n this.zuulWebSocketProperties = zuulWebSocketProperties;\n }\n\n public void errorHandler(ErrorHandler errorHandler) {\n this.errorHandler = errorHandler;\n }\n\n private String getWebSocketServerPath(ZuulWebSocketProperties.WsBrokerage wsBrokerage,\n URI uri) {\n String path = uri.toString();\n if (path.contains(\":\")) {\n path = UriComponentsBuilder.fromUriString(path).build().getPath();\n }\n\n for (String endPoint : wsBrokerage.getEndPoints()) {\n if (PatternMatchUtils.simpleMatch(toPattern(endPoint), path + \"/\")) {\n return endPoint;\n }\n }\n\n return null;\n }\n\n private ZuulWebSocketProperties.WsBrokerage getWebSocketBrokarage(URI uri) {\n String path = uri.toString();\n if (path.contains(\":\")) {\n path = UriComponentsBuilder.fromUriString(path).build().getPath();\n }\n\n for (Map.Entry entry : zuulWebSocketProperties\n .getBrokerages().entrySet()) {\n ZuulWebSocketProperties.WsBrokerage wsBrokerage = entry.getValue();\n if (wsBrokerage.isEnabled()) {\n for (String endPoint : wsBrokerage.getEndPoints()) {\n if (PatternMatchUtils.simpleMatch(toPattern(endPoint), path + \"/\")) {\n return wsBrokerage;\n }\n }\n }\n }\n\n return null;\n }\n\n private String toPattern(String path) {\n path = path.startsWith(\"/\") ? \"**\" + path : \"**/\" + path;\n return path.endsWith(\"/\") ? path + \"**\" : path + \"/**\";\n }\n\n @Override\n public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus)\n throws Exception {\n disconnectFromProxiedTarget(session);\n super.afterConnectionClosed(session, closeStatus);\n }\n\n @Override\n public void handleMessage(WebSocketSession session, WebSocketMessage message)\n throws Exception {\n super.handleMessage(session, message);\n handleMessageFromClient(session, message);\n }\n\n private void handleMessageFromClient(WebSocketSession session,\n WebSocketMessage message) throws Exception {\n boolean handled = false;\n WebSocketMessageAccessor accessor = WebSocketMessageAccessor.create(message);\n if (StompCommand.SEND.toString().equalsIgnoreCase(accessor.getCommand())) {\n handled = true;\n sendMessageToProxiedTarget(session, accessor);\n }\n\n if (StompCommand.SUBSCRIBE.toString().equalsIgnoreCase(accessor.getCommand())) {\n handled = true;\n subscribeToProxiedTarget(session, accessor);\n }\n\n if (StompCommand.UNSUBSCRIBE.toString().equalsIgnoreCase(accessor.getCommand())) {\n handled = true;\n unsubscribeFromProxiedTarget(session, accessor);\n }\n\n if (StompCommand.CONNECT.toString().equalsIgnoreCase(accessor.getCommand())) {\n handled = true;\n connectToProxiedTarget(session);\n }\n\n if (!handled) {\n if (logger.isDebugEnabled()) {\n logger.debug(\"STOMP COMMAND \" + accessor.getCommand()\n + \" was not explicitly handled\");\n }\n }\n }\n\n private void connectToProxiedTarget(WebSocketSession session) {\n URI sessionUri = session.getUri();\n ZuulWebSocketProperties.WsBrokerage wsBrokerage = getWebSocketBrokarage(\n sessionUri);\n\n Assert.notNull(wsBrokerage, \"wsBrokerage must not be null\");\n\n String path = getWebSocketServerPath(wsBrokerage, sessionUri);\n Assert.notNull(path, \"Web socket uri path must be null\");\n\n URI routeTarget = proxyTargetResolver.resolveTarget(wsBrokerage);\n\n Assert.notNull(routeTarget, \"routeTarget must not be null\");\n\n String uri = ServletUriComponentsBuilder\n .fromUri(routeTarget)\n .path(path)\n .replaceQuery(sessionUri.getQuery())\n .toUriString();\n\n ProxyWebSocketConnectionManager connectionManager = new ProxyWebSocketConnectionManager(\n messagingTemplate, stompClient, session, headersCallback, uri);\n connectionManager.errorHandler(this.errorHandler);\n managers.put(session, connectionManager);\n connectionManager.start();\n }\n\n private void disconnectFromProxiedTarget(WebSocketSession session) {\n disconnectProxyManager(managers.remove(session));\n }\n\n private void disconnectProxyManager(ProxyWebSocketConnectionManager proxyManager) {\n if (proxyManager != null) {\n try {\n proxyManager.disconnect();\n } catch (Throwable ignored) {\n // nothing\n }\n }\n }\n\n private void unsubscribeFromProxiedTarget(WebSocketSession session,\n WebSocketMessageAccessor accessor) {\n ProxyWebSocketConnectionManager manager = managers.get(session);\n if (manager != null) {\n manager.unsubscribe(accessor.getDestination());\n }\n }\n\n private void sendMessageToProxiedTarget(WebSocketSession session,\n WebSocketMessageAccessor accessor) {\n ProxyWebSocketConnectionManager manager = managers.get(session);\n manager.sendMessage(accessor.getDestination(), accessor.getPayload());\n }\n\n private void subscribeToProxiedTarget(WebSocketSession session,\n WebSocketMessageAccessor accessor) throws Exception {\n ProxyWebSocketConnectionManager manager = managers.get(session);\n manager.subscribe(accessor.getDestination());\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ReconnectErrorHandler.java",
"content": "package com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.util.ErrorAnalyzer;\nimport org.apache.commons.logging.Log;\nimport org.apache.commons.logging.LogFactory;\nimport org.springframework.messaging.simp.stomp.ConnectionLostException;\n\nimport java.io.IOException;\n\n/**\n * Created by ronald22 on 06/04/2017.\n */\npublic class ReconnectErrorHandler implements ProxyWebSocketErrorHandler {\n private static final long CONNECTION_LOST_RECONNECT_INTERVAL = 10000;\n private final Log logger = LogFactory\n .getLog(ReconnectErrorHandler.class);\n private ErrorAnalyzer errorAnalyzer;\n\n public ReconnectErrorHandler(ErrorAnalyzer errorAnalyzer) {\n this.errorAnalyzer = errorAnalyzer;\n }\n\n @Override\n public void handleError(Throwable t) {\n if (logger.isErrorEnabled()) {\n logger.error(\"Proxy web socket error occurred.\", t);\n }\n\n if (!(t instanceof ProxySessionException))\n return;\n\n ProxySessionException exception = (ProxySessionException) t;\n\n if (shouldAttemptToReconnect(exception)) {\n executeReconnectThread(exception.getConnectionManager());\n }\n }\n\n private boolean shouldAttemptToReconnect(ProxySessionException proxyException) {\n if (!isConnectionLost(proxyException))\n return false;\n\n if (!proxyException.getConnectionManager().isConnectedToUserAgent())\n return false;\n\n return true;\n }\n\n private boolean isConnectionLost(ProxySessionException proxyException) {\n Throwable cause = proxyException.getCause();\n Throwable[] causeChain = errorAnalyzer.determineCauseChain(cause);\n Throwable throwable = errorAnalyzer\n .getFirstThrowableOfType(ConnectionLostException.class, causeChain);\n\n if (throwable != null)\n return true;\n\n throwable = errorAnalyzer.getFirstThrowableOfType(IOException.class,\n causeChain);\n\n return throwable != null\n && throwable.getMessage().toLowerCase().contains(\" refused \");\n }\n\n private void executeReconnectThread(\n final ProxyWebSocketConnectionManager clientConnectionManager) {\n Thread t = new Thread(new Runnable() {\n @Override\n public void run() {\n clientConnectionManager.reconnect(CONNECTION_LOST_RECONNECT_INTERVAL);\n }\n });\n t.setDaemon(true);\n t.start();\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/WebSocketHttpHeadersCallback.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\n\n/**\n * Callback strategy to supply web socket headers to handshake requests.\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic interface WebSocketHttpHeadersCallback {\n\tvoid applyHeaders(WebSocketSession userAgentSession, WebSocketHttpHeaders headers);\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/WebSocketMessageAccessor.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.springframework.util.StringUtils;\nimport org.springframework.web.socket.WebSocketMessage;\n\n/**\n * An accessor to acess web socket messages before discpatching them to the backend\n * server.\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic final class WebSocketMessageAccessor {\n\tprivate String[] messageComponents;\n\n\tprivate WebSocketMessageAccessor() {\n\t}\n\n\tpublic static WebSocketMessageAccessor create(WebSocketMessage message) {\n\t\tString msgPayload = message.getPayload().toString();\n\t\treturn create(msgPayload);\n\t}\n\n\tpublic static WebSocketMessageAccessor create(String message) {\n\t\tWebSocketMessageAccessor accessor = new WebSocketMessageAccessor();\n\t\taccessor.messageComponents = StringUtils.tokenizeToStringArray(message, \"\\n\");\n\t\treturn accessor;\n\t}\n\n\tpublic String getCommand() {\n\t\tif (accessible())\n\t\t\treturn messageComponents[0];\n\n\t\treturn null;\n\t}\n\n\tprivate boolean accessible() {\n\t\treturn messageComponents != null && messageComponents.length > 0;\n\t}\n\n\tpublic String getDestination() {\n\t\treturn getHeader(\"destination\");\n\t}\n\n\tpublic String getHeader(String header) {\n\t\tif (!accessible())\n\t\t\treturn null;\n\n\t\theader = header.endsWith(\":\") ? header : header + \":\";\n\t\tif (accessible()) {\n\t\t\tfor (String messageComponent : messageComponents) {\n\t\t\t\tint indx = messageComponent.indexOf(header);\n\t\t\t\tif (indx != -1) {\n\t\t\t\t\treturn messageComponent.substring(indx + header.length());\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\tpublic String getPayload() {\n\t\tif (!accessible())\n\t\t\treturn null;\n\n\t\treturn messageComponents[messageComponents.length - 1];\n\t}\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ZuulWebSocketConfiguration.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport com.github.mthizo247.cloud.netflix.zuul.web.authentication.BasicAuthPrincipalHeadersCallback;\nimport com.github.mthizo247.cloud.netflix.zuul.web.authentication.CompositeHeadersCallback;\nimport com.github.mthizo247.cloud.netflix.zuul.web.authentication.LoginCookieHeadersCallback;\nimport com.github.mthizo247.cloud.netflix.zuul.web.authentication.OAuth2BearerPrincipalHeadersCallback;\nimport com.github.mthizo247.cloud.netflix.zuul.web.filter.ProxyRedirectFilter;\nimport com.github.mthizo247.cloud.netflix.zuul.web.proxytarget.CompositeProxyTargetResolver;\nimport com.github.mthizo247.cloud.netflix.zuul.web.proxytarget.EurekaProxyTargetResolver;\nimport com.github.mthizo247.cloud.netflix.zuul.web.proxytarget.LoadBalancedProxyTargetResolver;\nimport com.github.mthizo247.cloud.netflix.zuul.web.proxytarget.ProxyTargetResolver;\nimport com.github.mthizo247.cloud.netflix.zuul.web.proxytarget.UrlProxyTargetResolver;\nimport com.github.mthizo247.cloud.netflix.zuul.web.util.DefaultErrorAnalyzer;\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.beans.factory.annotation.Qualifier;\nimport org.springframework.boot.autoconfigure.AutoConfigureAfter;\nimport org.springframework.boot.autoconfigure.condition.ConditionalOnClass;\nimport org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;\nimport org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;\nimport org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;\nimport org.springframework.boot.context.properties.EnableConfigurationProperties;\nimport org.springframework.cloud.client.discovery.DiscoveryClient;\nimport org.springframework.cloud.client.loadbalancer.LoadBalancerClient;\nimport org.springframework.cloud.netflix.zuul.filters.RouteLocator;\nimport org.springframework.cloud.netflix.zuul.filters.ZuulProperties;\nimport org.springframework.context.ApplicationListener;\nimport org.springframework.context.annotation.Bean;\nimport org.springframework.context.annotation.Configuration;\nimport org.springframework.context.annotation.Primary;\nimport org.springframework.context.event.ContextRefreshedEvent;\nimport org.springframework.messaging.converter.MessageConverter;\nimport org.springframework.messaging.simp.SimpMessagingTemplate;\nimport org.springframework.messaging.simp.config.MessageBrokerRegistry;\nimport org.springframework.scheduling.TaskScheduler;\nimport org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;\nimport org.springframework.web.socket.WebSocketHandler;\nimport org.springframework.web.socket.client.WebSocketClient;\nimport org.springframework.web.socket.client.standard.StandardWebSocketClient;\nimport org.springframework.web.socket.config.annotation.AbstractWebSocketMessageBrokerConfigurer;\nimport org.springframework.web.socket.config.annotation.DelegatingWebSocketMessageBrokerConfiguration;\nimport org.springframework.web.socket.config.annotation.SockJsServiceRegistration;\nimport org.springframework.web.socket.config.annotation.StompEndpointRegistry;\nimport org.springframework.web.socket.config.annotation.WebSocketTransportRegistration;\nimport org.springframework.web.socket.handler.WebSocketHandlerDecoratorFactory;\nimport org.springframework.web.socket.messaging.WebSocketStompClient;\nimport org.springframework.web.socket.sockjs.client.SockJsClient;\nimport org.springframework.web.socket.sockjs.client.Transport;\nimport org.springframework.web.socket.sockjs.client.WebSocketTransport;\n\nimport javax.annotation.PostConstruct;\nimport java.util.ArrayList;\nimport java.util.Arrays;\nimport java.util.List;\nimport java.util.Map;\nimport java.util.UUID;\n\n/**\n * Zuul reverse proxy web socket configuration\n *\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\n@Configuration\n@ConditionalOnWebApplication\n@ConditionalOnClass(WebSocketHandler.class)\n@ConditionalOnProperty(prefix = \"zuul.ws\", name = \"enabled\", havingValue = \"true\", matchIfMissing = true)\n@EnableConfigurationProperties(ZuulWebSocketProperties.class)\n@AutoConfigureAfter(DelegatingWebSocketMessageBrokerConfiguration.class)\npublic class ZuulWebSocketConfiguration extends AbstractWebSocketMessageBrokerConfigurer\n implements ApplicationListener {\n @Autowired\n ZuulWebSocketProperties zuulWebSocketProperties;\n @Autowired\n SimpMessagingTemplate messagingTemplate;\n @Autowired\n ZuulProperties zuulProperties;\n @Autowired\n @Qualifier(\"compositeProxyTargetResolver\")\n ProxyTargetResolver proxyTargetResolver;\n @Autowired\n ProxyWebSocketErrorHandler proxyWebSocketErrorHandler;\n @Autowired\n WebSocketStompClient stompClient;\n @Autowired\n @Qualifier(\"compositeHeadersCallback\")\n WebSocketHttpHeadersCallback webSocketHttpHeadersCallback;\n\n @Override\n public void registerStompEndpoints(StompEndpointRegistry registry) {\n boolean wsEnabled = false;\n for (Map.Entry entry : zuulWebSocketProperties\n .getBrokerages().entrySet()) {\n ZuulWebSocketProperties.WsBrokerage wsBrokerage = entry.getValue();\n if (wsBrokerage.isEnabled()) {\n this.addStompEndpoint(registry, wsBrokerage.getEndPoints());\n wsEnabled = true;\n }\n }\n\n if (!wsEnabled)\n this.addStompEndpoint(registry, UUID.randomUUID().toString());\n }\n\n @Override\n public void configureMessageBroker(MessageBrokerRegistry config) {\n // prefix for subscribe\n for (Map.Entry entry : zuulWebSocketProperties\n .getBrokerages().entrySet()) {\n ZuulWebSocketProperties.WsBrokerage wsBrokerage = entry.getValue();\n if (wsBrokerage.isEnabled()) {\n config.enableSimpleBroker(\n mergeBrokersWithApplicationDestinationPrefixes(wsBrokerage));\n // prefix for send\n config.setApplicationDestinationPrefixes(\n wsBrokerage.getDestinationPrefixes());\n }\n }\n }\n\n private SockJsServiceRegistration addStompEndpoint(StompEndpointRegistry registry, String... endpoint) {\n return registry.addEndpoint(endpoint)\n // bypasses spring web security\n .setAllowedOrigins(\"*\").withSockJS();\n }\n\n private String[] mergeBrokersWithApplicationDestinationPrefixes(\n ZuulWebSocketProperties.WsBrokerage wsBrokerage) {\n List brokers = new ArrayList<>(Arrays.asList(wsBrokerage.getBrokers()));\n\n for (String adp : wsBrokerage.getDestinationPrefixes()) {\n if (!brokers.contains(adp)) {\n brokers.add(adp);\n }\n }\n\n return brokers.toArray(new String[brokers.size()]);\n }\n\n @Override\n public void configureWebSocketTransport(WebSocketTransportRegistration registration) {\n registration.addDecoratorFactory(new WebSocketHandlerDecoratorFactory() {\n @Override\n public WebSocketHandler decorate(WebSocketHandler handler) {\n ProxyWebSocketHandler proxyWebSocketHandler = new ProxyWebSocketHandler(\n handler, stompClient, webSocketHttpHeadersCallback,\n messagingTemplate,\n proxyTargetResolver,\n zuulWebSocketProperties);\n proxyWebSocketHandler.errorHandler(proxyWebSocketErrorHandler);\n return proxyWebSocketHandler;\n }\n });\n }\n\n @Bean\n @Primary\n public WebSocketHttpHeadersCallback compositeHeadersCallback(final List headersCallbacks) {\n return new CompositeHeadersCallback(headersCallbacks);\n }\n\n @Bean\n @ConditionalOnClass(name = \"org.springframework.security.core.Authentication\")\n public WebSocketHttpHeadersCallback basicAuthPrincipalHeadersCallback() {\n return new BasicAuthPrincipalHeadersCallback();\n }\n\n @Bean\n @ConditionalOnClass(name = \"org.springframework.security.core.OAuth2Authentication\")\n public WebSocketHttpHeadersCallback oauth2BearerPrincipalHeadersCallback() {\n return new OAuth2BearerPrincipalHeadersCallback();\n }\n\n @Bean\n public WebSocketHttpHeadersCallback loginCookieHeadersCallback() {\n return new LoginCookieHeadersCallback();\n }\n\n @Bean\n public ProxyTargetResolver urlProxyTargetResolver(\n final ZuulProperties zuulProperties) {\n return new UrlProxyTargetResolver(zuulProperties);\n }\n\n @Bean\n public ProxyTargetResolver discoveryProxyTargetResolver(\n final ZuulProperties zuulProperties, final DiscoveryClient discoveryClient) {\n return new EurekaProxyTargetResolver(discoveryClient, zuulProperties);\n }\n\n @Bean\n public ProxyTargetResolver loadBalancedProxyTargetResolver(\n final ZuulProperties zuulProperties, final LoadBalancerClient loadBalancerClient) {\n return new LoadBalancedProxyTargetResolver(loadBalancerClient, zuulProperties);\n }\n\n @Bean\n @Primary\n public ProxyTargetResolver compositeProxyTargetResolver(final List resolvers) {\n return new CompositeProxyTargetResolver(resolvers);\n }\n\n @Bean\n @ConditionalOnMissingBean(WebSocketStompClient.class)\n public WebSocketStompClient stompClient(WebSocketClient webSocketClient, MessageConverter messageConverter,\n @Qualifier(\"proxyStompClientTaskScheduler\") TaskScheduler taskScheduler) {\n int bufferSizeLimit = 1024 * 1024 * 8;\n\n WebSocketStompClient client = new WebSocketStompClient(webSocketClient);\n client.setInboundMessageSizeLimit(bufferSizeLimit);\n client.setMessageConverter(messageConverter);\n client.setTaskScheduler(taskScheduler);\n client.setDefaultHeartbeat(new long[]{0, 0});\n return client;\n }\n\n @Bean\n @ConditionalOnMissingBean(WebSocketClient.class)\n public WebSocketClient webSocketClient() {\n StandardWebSocketClient webSocketClient = new StandardWebSocketClient();\n List transports = new ArrayList<>();\n transports.add(new WebSocketTransport(webSocketClient));\n return new SockJsClient(transports);\n }\n\n @Bean\n @Qualifier(\"proxyStompClientTaskScheduler\")\n public TaskScheduler stompClientTaskScheduler() {\n ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();\n scheduler.setThreadNamePrefix(\"ProxyStompClient-\");\n scheduler.setPoolSize(Runtime.getRuntime().availableProcessors());\n return scheduler;\n }\n\n @Bean\n public ProxyWebSocketErrorHandler reconnectErrorHandler() {\n return new ReconnectErrorHandler(new DefaultErrorAnalyzer());\n }\n\n @Bean\n @Primary\n public ProxyWebSocketErrorHandler compositeErrorHandler(final List errorHandlers) {\n return new CompositeErrorHandler(errorHandlers);\n }\n\n @Bean\n public ProxyRedirectFilter proxyRedirectFilter(RouteLocator routeLocator) {\n return new ProxyRedirectFilter(routeLocator);\n }\n\n @PostConstruct\n public void init() {\n ignorePattern(\"**/websocket\");\n ignorePattern(\"**/info\");\n }\n\n private void ignorePattern(String ignoredPattern) {\n for (String pattern : zuulProperties.getIgnoredPatterns()) {\n if (pattern.toLowerCase().contains(ignoredPattern))\n return;\n }\n\n zuulProperties.getIgnoredPatterns().add(ignoredPattern);\n }\n\n @Override\n public void onApplicationEvent(ContextRefreshedEvent event) {\n init();\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ZuulWebSocketProperties.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport java.util.HashMap;\nimport java.util.Map;\n\nimport javax.annotation.PostConstruct;\n\nimport org.springframework.boot.context.properties.ConfigurationProperties;\nimport org.springframework.util.StringUtils;\n\n/**\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\n@ConfigurationProperties(\"zuul.ws\")\npublic class ZuulWebSocketProperties {\n\tprivate boolean enabled = true;\n\tprivate Map brokerages = new HashMap<>();\n\n\tpublic boolean isEnabled() {\n\t\treturn enabled;\n\t}\n\n\tpublic void setEnabled(boolean enabled) {\n\t\tthis.enabled = enabled;\n\t}\n\n\tpublic Map getBrokerages() {\n\t\treturn brokerages;\n\t}\n\n\tpublic void setBrokerages(Map brokerages) {\n\t\tthis.brokerages = brokerages;\n\t}\n\n\t@PostConstruct\n\tpublic void init() {\n\t\tfor (Map.Entry entry : this.brokerages.entrySet()) {\n\t\t\tWsBrokerage wsBrokerage = entry.getValue();\n\t\t\tif (!StringUtils.hasText(wsBrokerage.getId())) {\n\t\t\t\twsBrokerage.id = entry.getKey();\n\t\t\t}\n\t\t}\n\t}\n\n\tpublic static class WsBrokerage {\n\t\tprivate boolean enabled = true;\n\t\tprivate String id;\n\t\tprivate String routeId;\n\t\tprivate String[] endPoints;\n\t\tprivate String[] brokers;\n\t\tprivate String[] destinationPrefixes;\n\n\t\tpublic boolean isEnabled() {\n\t\t\treturn enabled;\n\t\t}\n\n\t\tpublic void setEnabled(boolean enabled) {\n\t\t\tthis.enabled = enabled;\n\t\t}\n\n\t\tpublic String getId() {\n\t\t\treturn id;\n\t\t}\n\n\t\tpublic void setId(String id) {\n\t\t\tthis.id = id;\n\t\t}\n\n\t\tpublic String getRouteId() {\n\t\t\treturn routeId;\n\t\t}\n\n\t\tpublic void setRouteId(String routeId) {\n\t\t\tthis.routeId = routeId;\n\t\t}\n\n\t\tpublic String[] getEndPoints() {\n\t\t\treturn endPoints;\n\t\t}\n\n\t\tpublic void setEndPoints(String[] endPoints) {\n\t\t\tthis.endPoints = endPoints;\n\t\t}\n\n\t\tpublic String[] getBrokers() {\n\t\t\treturn brokers;\n\t\t}\n\n\t\tpublic void setBrokers(String[] brokers) {\n\t\t\tthis.brokers = brokers;\n\t\t}\n\n\t\tpublic String[] getDestinationPrefixes() {\n\t\t\treturn destinationPrefixes;\n\t\t}\n\n\t\tpublic void setDestinationPrefixes(String[] destinationPrefixes) {\n\t\t\tthis.destinationPrefixes = destinationPrefixes;\n\t\t}\n\t}\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/util/DefaultErrorAnalyzer.java",
"content": "package com.github.mthizo247.cloud.netflix.zuul.web.util;\n\nimport java.util.ArrayList;\nimport java.util.List;\n\n/**\n * Created by ronald22 on 13/02/2018.\n */\npublic class DefaultErrorAnalyzer implements ErrorAnalyzer {\n\n @Override\n public Throwable[] determineCauseChain(Throwable throwable) {\n List chain = new ArrayList<>();\n Throwable currentThrowable = throwable;\n\n while (currentThrowable != null) {\n chain.add(currentThrowable);\n currentThrowable = currentThrowable.getCause();\n }\n\n return chain.toArray(new Throwable[chain.size()]);\n }\n\n @Override\n public Throwable getFirstThrowableOfType(Class throwableType, Throwable[] chain) {\n if (chain != null) {\n for (Throwable t : chain) {\n if ((t != null) && throwableType.isInstance(t)) {\n return t;\n }\n }\n }\n\n return null;\n }\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/util/ErrorAnalyzer.java",
"content": "package com.github.mthizo247.cloud.netflix.zuul.web.util;\n\n/**\n * Created by ronald22 on 13/02/2018.\n */\npublic interface ErrorAnalyzer {\n Throwable[] determineCauseChain(Throwable throwable);\n\n Throwable getFirstThrowableOfType(Class throwableType, Throwable[] chain);\n}\n"
},
{
"path": "src/main/java/com/github/mthizo247/cloud/netflix/zuul/web/util/MapPropertyResolver.java",
"content": "package com.github.mthizo247.cloud.netflix.zuul.web.util;\n\nimport org.springframework.core.env.AbstractPropertyResolver;\n\nimport java.util.Map;\n\n/**\n * @author Ronald Mthombeni\n */\npublic class MapPropertyResolver extends AbstractPropertyResolver {\n\n private Map map;\n\n public MapPropertyResolver(Map map) {\n this.map = map;\n }\n\n @Override\n protected String getPropertyAsRawString(String key) {\n Object v = map.get(key);\n return v != null ? v.toString() : null;\n }\n\n @Override\n public T getProperty(String key, Class targetType) {\n Object v = map.get(key);\n if (v != null) {\n return targetType.cast(v);\n }\n return null;\n }\n}\n"
},
{
"path": "src/test/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ProxyWebSocketConnectionManagerTests.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport org.junit.Before;\nimport org.junit.Test;\nimport org.springframework.messaging.simp.SimpMessagingTemplate;\nimport org.springframework.messaging.simp.stomp.StompCommand;\nimport org.springframework.messaging.simp.stomp.StompHeaders;\nimport org.springframework.messaging.simp.stomp.StompSession;\nimport org.springframework.util.ErrorHandler;\nimport org.springframework.util.concurrent.ListenableFuture;\nimport org.springframework.web.socket.WebSocketHttpHeaders;\nimport org.springframework.web.socket.WebSocketSession;\nimport org.springframework.web.socket.messaging.WebSocketStompClient;\n\nimport static org.mockito.Mockito.mock;\nimport static org.mockito.Mockito.verify;\nimport static org.mockito.Mockito.when;\n\n/**\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class ProxyWebSocketConnectionManagerTests {\n\n private ProxyWebSocketConnectionManager proxyConnectionManager;\n\n private SimpMessagingTemplate messagingTemplate = mock(SimpMessagingTemplate.class);\n private WebSocketStompClient stompClient = mock(WebSocketStompClient.class);\n private WebSocketSession wsSession = mock(WebSocketSession.class);\n private WebSocketHttpHeadersCallback headersCallback = mock(\n WebSocketHttpHeadersCallback.class);\n private StompSession serverSession = mock(StompSession.class);\n private ListenableFuture listenableFuture = (ListenableFuture) mock(\n ListenableFuture.class);\n private ErrorHandler errHandler = mock(ErrorHandler.class);\n\n @Before\n public void init() throws Exception {\n String uri = \"http://example.com\";\n proxyConnectionManager = new ProxyWebSocketConnectionManager(messagingTemplate,\n stompClient, wsSession, headersCallback, uri);\n\n proxyConnectionManager.errorHandler(errHandler);\n\n when(listenableFuture.get()).thenReturn(serverSession);\n when(stompClient.connect(uri, new WebSocketHttpHeaders(),\n proxyConnectionManager)).thenReturn(listenableFuture);\n }\n\n @Test\n public void sendStringMessageAsBytes() throws Exception {\n String destination = \"/app/messages\";\n String message = \"hello\";\n\n proxyConnectionManager.start();\n\n proxyConnectionManager.sendMessage(destination, message);\n\n verify(serverSession).send(destination, message.getBytes());\n }\n\n @Test\n public void handlesExcpetionUsingErrorHandler() throws Exception {\n StompHeaders headers = new StompHeaders();\n byte[] payload = new byte[0];\n Throwable exception = new Exception(\"E\");\n proxyConnectionManager.handleException(serverSession, StompCommand.MESSAGE,\n headers, payload, exception);\n\n verify(errHandler).handleError(new ProxySessionException(proxyConnectionManager, serverSession, exception));\n }\n\n @Test\n public void handlesTransportErrorUsingErrorHandler() throws Exception {\n Throwable exception = new Exception(\"E\");\n proxyConnectionManager.handleTransportError(serverSession, exception);\n\n verify(errHandler).handleError(new ProxySessionException(proxyConnectionManager, serverSession, exception));\n }\n}"
},
{
"path": "src/test/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/WebSocketMessageAccessorTests.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport static org.hamcrest.core.Is.is;\nimport static org.junit.Assert.assertThat;\n\nimport org.junit.Test;\n\n/**\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class WebSocketMessageAccessorTests {\n\tprivate WebSocketMessageAccessor accessor;\n\n\t@Test\n\tpublic void connect() throws Exception {\n\t\taccessor = WebSocketMessageAccessor.create(\"CONNECT\\n\"\n\t\t\t\t+ \"accept-version:1.1,1.0\\n\" + \"heart-beat:10000,10000\\n\" + \"\\n\");\n\n\t\tassertThat(accessor.getCommand(), is(\"CONNECT\"));\n\t}\n\n\t@Test\n\tpublic void subscribe() throws Exception {\n\t\taccessor = WebSocketMessageAccessor.create(\n\t\t\t\t\"SUBSCRIBE\\n\" + \"id:sub-0\\n\" + \"destination:/topic/greetings\\n\" + \"\\n\");\n\n\t\tassertThat(accessor.getCommand(), is(\"SUBSCRIBE\"));\n\t\tassertThat(accessor.getDestination(), is(\"/topic/greetings\"));\n\t}\n\n\t@Test\n\tpublic void send() throws Exception {\n\t\taccessor = WebSocketMessageAccessor.create(\"SEND\\n\" + \"destination:/app/hello\\n\"\n\t\t\t\t+ \"content-length:16\\n\" + \"\\n\" + \"{\\\"name\\\":\\\"hell9\\\"}\");\n\n\t\tassertThat(accessor.getCommand(), is(\"SEND\"));\n\t\tassertThat(accessor.getDestination(), is(\"/app/hello\"));\n\t\tassertThat(accessor.getPayload(), is(\"{\\\"name\\\":\\\"hell9\\\"}\"));\n\t}\n}"
},
{
"path": "src/test/java/com/github/mthizo247/cloud/netflix/zuul/web/socket/ZuulWebSocketPropertiesTests.java",
"content": "/*\n * Copyright 2002-2017 the original author or authors.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\npackage com.github.mthizo247.cloud.netflix.zuul.web.socket;\n\nimport static org.hamcrest.core.Is.is;\nimport static org.junit.Assert.assertThat;\n\nimport java.util.HashMap;\nimport java.util.Map;\n\nimport org.junit.Before;\nimport org.junit.Test;\n\n/**\n * @author Ronald Mthombeni\n * @author Salman Noor\n */\npublic class ZuulWebSocketPropertiesTests {\n\tprivate ZuulWebSocketProperties properties;\n\n\t@Before\n\tpublic void setUp() throws Exception {\n\t\tproperties = new ZuulWebSocketProperties();\n\t}\n\n\t@Test\n\tpublic void brokerageIdSet() throws Exception {\n\t\tZuulWebSocketProperties.WsBrokerage brokerage = new ZuulWebSocketProperties.WsBrokerage();\n\t\tbrokerage.setId(\"bar\");\n\t\tMap brokerages = new HashMap<>();\n\t\tbrokerages.put(\"foo\", brokerage);\n\n\t\tproperties.setBrokerages(brokerages);\n\n\t\tproperties.init();\n\n\t\tassertThat(brokerage.getId(), is(\"bar\"));\n\t}\n\n\t@Test\n\tpublic void brokerageIdNotSet() throws Exception {\n\t\tZuulWebSocketProperties.WsBrokerage brokerage = new ZuulWebSocketProperties.WsBrokerage();\n\t\tMap brokerages = new HashMap<>();\n\t\tbrokerages.put(\"foo\", brokerage);\n\n\t\tproperties.setBrokerages(brokerages);\n\n\t\tproperties.init();\n\n\t\tassertThat(brokerage.getId(), is(\"foo\"));\n\t}\n}"
}
]