[
{
"path": ".asf.yaml",
"content": "github:\n features:\n # Enable issue management\n issues: true\n # Enable wiki\n wiki: true\n\n protected_branches:\n\nnotifications:\n commits: commits@rocketmq.apache.org\n issues: commits@rocketmq.apache.org\n pullrequests: commits@rocketmq.apache.org\n jobs: commits@rocketmq.apache.org\n discussions: dev@rocketmq.apache.org\n"
},
{
"path": ".gitignore",
"content": "target/\n.DS_Store\n!.mvn/wrapper/maven-wrapper.jar\n*.versionsBackup\n.gradle/\n\n### STS ###\n.apt_generated\n.classpath\n.factorypath\n.project\n.settings\n.springBeans\n\n### IntelliJ IDEA ###\n.idea\n*.iws\n*.iml\n*.ipr\n*.zip\n\n### NetBeans ###\nnbproject/private/\nbuild/\nnbbuild/\ndist/\nnbdist/\n\npom.xml.releaseBackup\nrelease.properties\n\n"
},
{
"path": ".travis.yml",
"content": "dist: trusty\n \nlanguage: java\n\njdk:\n - oraclejdk8\n - oraclejdk9\n - oraclejdk11\n - openjdk8\n\nbefore_install:\n - echo 'MAVEN_OPTS=\"$MAVEN_OPTS -Xmx1024m -XX:MaxPermSize=512m -XX:+BytecodeVerificationLocal\"' >> ~/.mavenrc\n - cat ~/.mavenrc\n - if [ \"$TRAVIS_OS_NAME\" == \"osx\" ]; then export JAVA_HOME=$(/usr/libexec/java_home); fi\n - if [ \"$TRAVIS_OS_NAME\" == \"linux\" ]; then jdk_switcher use \"$CUSTOM_JDK\"; fi\n\nscript:\n - travis_retry mvn -B clean apache-rat:check\n - travis_retry mvn -B clean install cobertura:cobertura\n\nafter_success:\n - bash <(curl -s https://codecov.io/bash) || echo 'Codecov failed to upload'\n"
},
{
"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. For the purposes of this definition,\n \"control\" means (i) the power, direct or indirect, to cause the\n direction or management of such entity, whether by contract or\n otherwise, or (ii) ownership of fifty percent (50%) or more of the\n outstanding shares, or (iii) beneficial ownership of such entity.\n\n \"You\" (or \"Your\") shall mean an individual or Legal Entity\n exercising permissions granted by this License.\n\n \"Source\" form shall mean the preferred form for making modifications,\n including but not limited to software source code, documentation\n source, and configuration files.\n\n \"Object\" form shall mean any form resulting from mechanical\n transformation or translation of a Source form, including but\n not limited to compiled object code, generated documentation,\n and conversions to other media types.\n\n \"Work\" shall mean the work of authorship, whether in Source or\n Object form, made available under the License, as indicated by a\n copyright notice that is included in or attached to the work\n (an example is provided in the Appendix below).\n\n \"Derivative Works\" shall mean any work, whether in Source or Object\n form, that is based on (or derived from) the Work and for which the\n editorial revisions, annotations, elaborations, or other modifications\n represent, as a whole, an original work of authorship. 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In no event and under no legal theory,\n whether in tort (including negligence), contract, or otherwise,\n unless required by applicable law (such as deliberate and grossly\n negligent acts) or agreed to in writing, shall any Contributor be\n liable to You for damages, including any direct, indirect, special,\n incidental, or consequential damages of any character arising as a\n result of this License or out of the use or inability to use the\n Work (including but not limited to damages for loss of goodwill,\n work stoppage, computer failure or malfunction, or any and all\n other commercial damages or losses), even if such Contributor\n has been advised of the possibility of such damages.\n\n 9. Accepting Warranty or Additional Liability. While redistributing\n the Work or Derivative Works thereof, You may choose to offer,\n and charge a fee for, acceptance of support, warranty, indemnity,\n or other liability obligations and/or rights consistent with this\n License. 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We also recommend that a\n file or class name and description of purpose be included on the\n same \"printed page\" as the copyright notice for easier\n identification within third-party archives.\n\n Copyright [yyyy] [name of copyright owner]\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."
},
{
"path": "NOTICE",
"content": "Apache RocketMQ\nCopyright 2016-2023 The Apache Software Foundation\n\nThis product includes software developed at\nThe Apache Software Foundation (http://www.apache.org/).\n"
},
{
"path": "README.md",
"content": "# RocketMQ Streams \n[](https://app.travis-ci.com/apache/rocketmq-streams)\n[](https://app.codecov.io/gh/apache/rocketmq-streams) \n[](https://github.com/apache/rocketmq-streams/releases)\n[](https://www.apache.org/licenses/LICENSE-2.0.html)\n[](http://isitmaintained.com/project/apache/rocketmq-streams \"Average time to resolve an issue\")\n[](http://isitmaintained.com/project/apache/rocketmq-streams \"Percentage of issues still open\")\n[](https://twitter.com/intent/follow?screen_name=ApacheRocketMQ)\n\n\n**RocketMQ Streams is a lightweight stream processing framework, application gains the stream processing ability by depending on RocketMQ Streams as an SDK.**\n\nIt offers a variety of features:\n\n* Function:\n * One-to-one transform function, such as: filter, map, foreach\n * Aggregate function, such as: sum, min, max, count, aggregate\n * Generating function, such as: flatMap\n* Group by aggregate and window aggregate\n* Join stream\n* Custom serialization \n----------\n\n## Quick Start\nThis paragraph guides you running a stream processing with RocketMQ Streams.\n\n### Run RocketMQ 5.0 locally \n[RocketMQ quick-start](https://rocketmq.apache.org/docs/quick-start/)\n\nRocketMQ runs on all major operating systems and requires only a Java JDK version 8 or higher to be installed.\nTo check, run `java -version`:\n```shell\n$ java -version\njava version \"1.8.0_121\"\n```\n**1) Download RocketMQ**\n```shell\nwget https://archive.apache.org/dist/rocketmq/5.0.0/rocketmq-all-5.0.0-bin-release.zip\n\n# Unpack the release\n$ unzip rocketmq-all-5.0.0-bin-release.zip\n\n$ cd rocketmq-all-5.0.0-bin-release/bin\n```\n\n**2) Start NameServer**\n\nNameServer will be listening at `0.0.0.0:9876`, make sure that the port is not used by others on the local machine, and then do as follows.\n\n```shell\n### start Name Server\n$ nohup sh mqnamesrv &\n\n### check whether Name Server is successfully started\n$ tail -f ~/logs/rocketmqlogs/namesrv.log\nThe Name Server boot success...\n```\n\n**2) Start Broker**\n\n```shell\n### start Broker\n$ nohup sh bin/mqbroker -n localhost:9876 &\n\n### check whether Broker is successfully started, eg: Broker's IP is 192.168.1.2, Broker's name is broker-a\n$ tail -f ~/logs/rocketmqlogs/broker.log\nThe broker[broker-a, 192.169.1.2:10911] boot success...\n```\n\n### Build stream processing application\n\n**1) Build application in IDE**\n\n**2) Add RocketMQ Streams dependency**\n```xml\n \n org.apache.rocketmq\n rocketmq-streams\n {current.version}\n \n```\n\n**3) Build stream processing application**\n\n* create topic in RocketMQ before start the stream processing.\n```shell\nsh bin/mqadmin updateTopic -c ${clusterName} -t ${topicName} -r 8 -w 8 -n 127.0.0.1:9876\n```\n \n NOTE: the default clusterName is DefaultCluster in this quick-start doc, changes it with your RocketMQ cluster.\n\n* add your stream processing code, The following is an example. more examples are [here](./example/src/main/java/org/apache/rocketmq/streams/examples).\n```java\npublic static void main(String[] args) {\n StreamBuilder builder = new StreamBuilder(\"wordCount\");\n\n builder.source(\"sourceTopic\", total -> {\n String value = new String(total, StandardCharsets.UTF_8);\n return new Pair<>(null, value);\n })\n .flatMap((ValueMapperAction>) value -> {\n String[] splits = value.toLowerCase().split(\"\\\\W+\");\n return Arrays.asList(splits);\n })\n .keyBy(value -> value)\n .count()\n .toRStream()\n .print();\n\n TopologyBuilder topologyBuilder = builder.build();\n\n Properties properties = new Properties();\n properties.put(MixAll.NAMESRV_ADDR_PROPERTY, \"127.0.0.1:9876\");\n\n RocketMQStream rocketMQStream = new RocketMQStream(topologyBuilder, properties);\n\n final CountDownLatch latch = new CountDownLatch(1);\n\n Runtime.getRuntime().addShutdownHook(new Thread(\"wordcount-shutdown-hook\") {\n @Override\n public void run() {\n rocketMQStream.stop();\n latch.countDown();\n }\n });\n\n try {\n rocketMQStream.start();\n latch.await();\n } catch (final Throwable e) {\n System.exit(1);\n }\n System.exit(0);\n }\n```\n"
},
{
"path": "build_without_test.sh",
"content": "#!/bin/sh\n\n# Licensed to the Apache Software Foundation (ASF) under one or more\n# contributor license agreements. See the NOTICE file distributed with\n# this work for additional information regarding copyright ownership.\n# The ASF licenses this file to You under the Apache License, Version 2.0\n# (the \"License\"); you may not use this file except in compliance with\n# the License. You may obtain a copy of the License ato\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\nmvn clean package -Dmaven.test.skip=true\n"
},
{
"path": "core/pom.xml",
"content": "\n\n \n rocketmq-streams-all\n org.apache.rocketmq\n 1.1.2-SNAPSHOT\n \n 4.0.0\n\n rocketmq-streams\n jar\n\n \n 8\n 8\n \n\n \n \n org.apache.rocketmq\n rocketmq-common\n ${rocketmq.version}\n \n \n org.apache.rocketmq\n rocketmq-client\n ${rocketmq.version}\n \n\n \n org.apache.rocketmq\n rocketmq-tools\n \n \n com.google.protobuf\n protobuf-java\n \n \n ${rocketmq.version}\n \n\n\n \n org.rocksdb\n rocksdbjni\n 7.6.0\n \n \n commons-io\n commons-io\n 2.11.0\n \n\n \n com.fasterxml.jackson.core\n jackson-databind\n 2.13.4.2\n \n\n \n\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/RocketMQStream.java",
"content": "package org.apache.rocketmq.streams.core;\n/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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\nimport org.apache.rocketmq.streams.core.common.Constant;\nimport org.apache.rocketmq.streams.core.exception.RStreamsException;\nimport org.apache.rocketmq.streams.core.metadata.StreamConfig;\nimport org.apache.rocketmq.streams.core.running.WorkerThread;\nimport org.apache.rocketmq.streams.core.topology.TopologyBuilder;\nimport org.slf4j.Logger;\nimport org.slf4j.LoggerFactory;\n\nimport java.util.ArrayList;\nimport java.util.List;\nimport java.util.Properties;\nimport java.util.concurrent.Executors;\nimport java.util.concurrent.ScheduledExecutorService;\nimport java.util.concurrent.atomic.AtomicBoolean;\nimport java.util.concurrent.atomic.AtomicInteger;\n\npublic class RocketMQStream {\n private static final Logger logger = LoggerFactory.getLogger(RocketMQStream.class.getName());\n private static final AtomicInteger index = new AtomicInteger(1);\n\n private final TopologyBuilder topologyBuilder;\n private final Properties properties;\n private final List workerThreads = new ArrayList<>();\n private final AtomicBoolean started = new AtomicBoolean(false);\n private final ScheduledExecutorService executor = Executors.newScheduledThreadPool(\n StreamConfig.SCHEDULED_THREAD_NUM,\n r -> new Thread(r, \"ScanIdleWindowThread_\" + index.getAndIncrement()));\n\n public RocketMQStream(TopologyBuilder topologyBuilder, Properties properties) {\n this.topologyBuilder = topologyBuilder;\n this.properties = properties;\n }\n\n\n public synchronized void start() {\n String jobId = topologyBuilder.getJobId();\n if (started.get()) {\n logger.info(\"RocketMQStream has been started, jobId=[{}].\", jobId);\n return;\n }\n\n this.started.compareAndSet(false, true);\n\n //启动线程\n try {\n int threadNum = StreamConfig.STREAMS_PARALLEL_THREAD_NUM;\n for (int i = 0; i < threadNum; i++) {\n String threadName = String.join(\"_\", Constant.WORKER_THREAD_NAME, jobId, String.valueOf(i));\n\n WorkerThread thread = new WorkerThread(threadName, topologyBuilder, this.properties, executor);\n\n thread.start();\n workerThreads.add(thread);\n }\n } catch (Throwable t) {\n logger.error(\"start RocketMQStream error, jobId=[{}].\", jobId, t);\n throw new RStreamsException(t);\n }\n }\n\n public void stop() {\n for (WorkerThread thread : workerThreads) {\n thread.shutdown();\n }\n workerThreads.clear();\n this.started.set(false);\n }\n\n public boolean isRunning() {\n return this.started.get();\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/common/Constant.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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\n\npackage org.apache.rocketmq.streams.core.common;\n\npublic class Constant {\n\n public static final String SHUFFLE_KEY_CLASS_NAME = \"shuffle.key.class.name\";\n\n public static final String SHUFFLE_VALUE_CLASS_NAME = \"shuffle.value.class.name\";\n\n public final static String STATE_TOPIC_SUFFIX = \"-stateTopic\";\n\n public static final String SHUFFLE_TOPIC_SUFFIX = \"-shuffleTopic\";\n\n public static final String SKIP_DATA_ERROR = \"skip_data_error\";\n\n public static final String SPLIT = \"@\";\n\n public static final String EMPTY_BODY = \"empty_body\";\n\n public static final String TRUE = \"true\";\n\n public static final String SOURCE_TIMESTAMP = \"source_timestamp\";\n\n public static final String STREAM_TAG = \"stream_tag\";\n\n public static final String WINDOW_START_TIME = \"window_start_time\";\n\n public static final String WINDOW_END_TIME = \"window_end_time\";\n\n public static final String WORKER_THREAD_NAME = \"ROCKETMQ_STREAMS\";\n\n public static final String STATIC_TOPIC_BROKER_NAME = \"__syslo__global__\";\n\n public static final String WATERMARK_KEY = \"watermark_key\";\n\n public static final Long DEFAULT_CONSUME_OFFSET = 0L;\n\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/exception/DataProcessThrowable.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.exception;\n\npublic class DataProcessThrowable extends Throwable {\n public DataProcessThrowable() {\n }\n\n public DataProcessThrowable(String message) {\n super(message);\n }\n\n public DataProcessThrowable(String message, Throwable cause) {\n super(message, cause);\n }\n\n public DataProcessThrowable(Throwable cause) {\n super(cause);\n }\n\n public DataProcessThrowable(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {\n super(message, cause, enableSuppression, writableStackTrace);\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/exception/DeserializeThrowable.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.exception;\n\npublic class DeserializeThrowable extends Throwable {\n private static final long serialVersionUID = 2154421351264920776L;\n\n public DeserializeThrowable() {\n }\n\n public DeserializeThrowable(String message) {\n super(message);\n }\n\n public DeserializeThrowable(String message, Throwable cause) {\n super(message, cause);\n }\n\n public DeserializeThrowable(Throwable cause) {\n super(cause);\n }\n\n public DeserializeThrowable(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {\n super(message, cause, enableSuppression, writableStackTrace);\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/exception/RStreamsException.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.exception;\n\npublic class RStreamsException extends RuntimeException {\n private static final long serialVersionUID = 6729806497659471678L;\n\n public RStreamsException() {\n }\n\n public RStreamsException(String message) {\n super(message);\n }\n\n public RStreamsException(String message, Throwable cause) {\n super(message, cause);\n }\n\n public RStreamsException(Throwable cause) {\n super(cause);\n }\n\n public RStreamsException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {\n super(message, cause, enableSuppression, writableStackTrace);\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/exception/RecoverStateStoreThrowable.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.exception;\n\npublic class RecoverStateStoreThrowable extends Throwable {\n public RecoverStateStoreThrowable() {\n }\n\n public RecoverStateStoreThrowable(String message) {\n super(message);\n }\n\n public RecoverStateStoreThrowable(String message, Throwable cause) {\n super(message, cause);\n }\n\n public RecoverStateStoreThrowable(Throwable cause) {\n super(cause);\n }\n\n public RecoverStateStoreThrowable(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {\n super(message, cause, enableSuppression, writableStackTrace);\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/AggregateAction.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function;\n\npublic interface AggregateAction {\n OUT calculate(K key, V value, OUT accumulator);\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/FilterAction.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function;\n\n@FunctionalInterface\npublic interface FilterAction {\n /**\n *\n * @param value the target to filter\n * @return pass if true;\n */\n boolean apply(final T value);\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/ForeachAction.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function;\n\n@FunctionalInterface\npublic interface ForeachAction {\n void apply(T value);\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/SelectAction.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function;\n\n\n@FunctionalInterface\npublic interface SelectAction {\n OUT select(IN value);\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/ValueJoinAction.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function;\n\n\npublic interface ValueJoinAction {\n\n OUT apply(final V1 value1, final V2 value2);\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/ValueMapperAction.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function;\n\npublic interface ValueMapperAction {\n O convert(final T value) throws Throwable;\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/accumulator/Accumulator.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function.accumulator;\n\nimport java.util.Properties;\n\n//因为需要序列化/反序列化这个类，所以必须给field生成setter/getter方法\npublic interface Accumulator {\n void addValue(V value);\n\n void merge(Accumulator other);\n\n /**\n * invoked after the window fired.\n *\n * @param context the attached properties after window fired.\n * @return the value.\n */\n R result(Properties context);\n\n Accumulator clone();\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/accumulator/AvgAccumulator.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function.accumulator;\n\nimport java.util.Properties;\n\npublic class AvgAccumulator implements Accumulator {\n private Double avg;\n private Integer num;\n\n @Override\n public void addValue(V value) {\n if (value instanceof Number) {\n Number number = (Number) value;\n Double valueToDouble = number.doubleValue();\n\n if (avg == null) {\n avg = valueToDouble;\n num = 1;\n } else {\n avg = avg + (valueToDouble - avg) / (num + 1);\n num++;\n }\n } else {\n throw new IllegalArgumentException(\"Calculate avg, input is not a number. value=\" + value);\n }\n }\n\n @Override\n public void merge(Accumulator other) {\n if (other instanceof AvgAccumulator) {\n AvgAccumulator otherAvgAccumulator = (AvgAccumulator) other;\n Integer numOther = otherAvgAccumulator.getNum();\n Double avgOther = otherAvgAccumulator.getAvg();\n\n avg = avg + numOther / (num + numOther) * (avgOther - avg);\n num = num + numOther;\n } else {\n throw new IllegalArgumentException(\"Merge avg, input is not a AvgAccumulator.\");\n }\n }\n\n @Override\n public Double result(Properties context) {\n return avg;\n }\n\n @Override\n public Accumulator clone() {\n return new AvgAccumulator<>();\n }\n\n public Double getAvg() {\n return avg;\n }\n\n public void setAvg(Double avg) {\n this.avg = avg;\n }\n\n public Integer getNum() {\n return num;\n }\n\n public void setNum(Integer num) {\n this.num = num;\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/accumulator/CountAccumulator.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function.accumulator;\n\nimport java.util.Properties;\n\n//因为需要序列化/反序列化这个类，所以必须给field生成setter/getter方法\npublic class CountAccumulator implements Accumulator {\n private Integer count = 0;\n\n @Override\n public void addValue(V value) {\n count += 1;\n }\n\n @Override\n public void merge(Accumulator other) {\n count += other.result(null);\n }\n\n @Override\n public Integer result(Properties context) {\n return count;\n }\n\n public Integer getCount() {\n return count;\n }\n\n public void setCount(Integer count) {\n this.count = count;\n }\n\n @Override\n public Accumulator clone() {\n CountAccumulator accumulator = new CountAccumulator<>();\n accumulator.count = this.count;\n return accumulator;\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/accumulator/MinAccumulator.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function.accumulator;\n\nimport java.util.Properties;\n\npublic class MinAccumulator implements Accumulator {\n private Number min;\n\n @Override\n public void addValue(V value) {\n if (value instanceof Number) {\n Number number = (Number) value;\n if (min == null) {\n min = number;\n } else {\n min = Math.min(min.doubleValue(), number.doubleValue());\n }\n } else {\n throw new IllegalArgumentException(\"min but not a number. value=\" + value);\n }\n\n }\n\n @Override\n public void merge(Accumulator other) {\n min = Math.min(min.doubleValue(), other.result(null));\n }\n\n @Override\n public Double result(Properties context) {\n return min.doubleValue();\n }\n\n @Override\n public Accumulator clone() {\n return new MinAccumulator<>();\n }\n\n public Number getMin() {\n return min;\n }\n\n public void setMin(Number min) {\n this.min = min;\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/supplier/AccumulatorSupplier.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function.supplier;\n\nimport org.apache.rocketmq.common.message.MessageQueue;\nimport org.apache.rocketmq.streams.core.common.Constant;\nimport org.apache.rocketmq.streams.core.exception.RecoverStateStoreThrowable;\nimport org.apache.rocketmq.streams.core.function.accumulator.Accumulator;\nimport org.apache.rocketmq.streams.core.function.SelectAction;\nimport org.apache.rocketmq.streams.core.metadata.Data;\nimport org.apache.rocketmq.streams.core.running.AbstractProcessor;\nimport org.apache.rocketmq.streams.core.running.Processor;\nimport org.apache.rocketmq.streams.core.running.StreamContext;\nimport org.apache.rocketmq.streams.core.state.StateStore;\nimport org.apache.rocketmq.streams.core.util.ColumnFamilyUtil;\n\nimport java.util.function.Supplier;\n\npublic class AccumulatorSupplier implements Supplier> {\n private final String currentName;\n private final String parentName;\n private SelectAction selectAction;\n private Accumulator accumulator;\n\n public AccumulatorSupplier(String currentName, String parentName, SelectAction selectAction, Accumulator accumulator) {\n this.currentName = currentName;\n this.parentName = parentName;\n this.selectAction = selectAction;\n this.accumulator = accumulator;\n }\n\n @Override\n public Processor get() {\n return new AccumulatorProcessor(currentName, parentName, selectAction, accumulator);\n }\n\n private class AccumulatorProcessor extends AbstractProcessor {\n private final String currentName;\n private final String parentName;\n private StateStore stateStore;\n private MessageQueue stateTopicMessageQueue;\n private SelectAction selectAction;\n private Accumulator accumulator;\n\n public AccumulatorProcessor(String currentName, String parentName, SelectAction selectAction, Accumulator accumulator) {\n this.currentName = currentName;\n this.parentName = parentName;\n this.selectAction = selectAction;\n this.accumulator = accumulator;\n }\n\n @Override\n public void preProcess(StreamContext context) throws RecoverStateStoreThrowable {\n super.preProcess(context);\n this.stateStore = super.waitStateReplay();\n\n String stateTopicName = context.getSourceTopic() + Constant.STATE_TOPIC_SUFFIX;\n this.stateTopicMessageQueue = new MessageQueue(stateTopicName, context.getSourceBrokerName(), context.getSourceQueueId());\n }\n\n @Override\n public void process(V data) throws Throwable {\n K key = this.context.getKey();\n Accumulator value;\n\n byte[] keyBytes = super.object2Byte(key);\n\n byte[] valueBytes = stateStore.get(ColumnFamilyUtil.VALUE_STATE_CF, keyBytes);\n if (valueBytes == null || valueBytes.length == 0) {\n value = accumulator.clone();\n } else {\n value = super.byte2Object(valueBytes);\n }\n\n R select = selectAction.select(data);\n value.addValue(select);\n\n OV result = value.result(null);\n byte[] newValueBytes = super.object2Byte(value);\n\n stateStore.put(this.stateTopicMessageQueue, ColumnFamilyUtil.VALUE_STATE_CF, keyBytes, newValueBytes);\n\n Data temp = new Data<>(key, result, this.context.getDataTime(), this.context.getHeader());\n Data convert = super.convert(temp);\n\n this.context.forward(convert);\n }\n\n }\n}\n"
},
{
"path": "core/src/main/java/org/apache/rocketmq/streams/core/function/supplier/AddTagSupplier.java",
"content": "/*\n * Licensed to the Apache Software Foundation (ASF) under one or more\n * contributor license agreements. See the NOTICE file distributed with\n * this work for additional information regarding copyright ownership.\n * The ASF licenses this file to You under the Apache License, Version 2.0\n * (the \"License\"); you may not use this file except in compliance with\n * the License. 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 */\npackage org.apache.rocketmq.streams.core.function.supplier;\n\nimport org.apache.rocketmq.streams.core.common.Constant;\nimport org.apache.rocketmq.streams.core.metadata.Data;\nimport org.apache.rocketmq.streams.core.running.AbstractProcessor;\nimport org.apache.rocketmq.streams.core.running.Processor;\n\nimport java.util.Properties;\nimport java.util.function.Supplier;\n\npublic class AddTagSupplier implements Supplier> {\n private final Properties properties = new Properties();\n\n public AddTagSupplier(Supplier