-
Notifications
You must be signed in to change notification settings - Fork 3.1k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[ROCKETMQ-82] RocketMQ-Flink Integration (#45)
- Loading branch information
Showing
27 changed files
with
2,294 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,147 @@ | ||
# RocketMQ-Flink | ||
|
||
RocketMQ integration for [Apache Flink](https://flink.apache.org/). This module includes the RocketMQ source and sink that allows a flink job to either write messages into a topic or read from topics in a flink job. | ||
|
||
|
||
## RocketMQSource | ||
To use the `RocketMQSource`, you construct an instance of it by specifying a KeyValueDeserializationSchema instance and a Properties instance which including rocketmq configs. | ||
`RocketMQSource(KeyValueDeserializationSchema<OUT> schema, Properties props)` | ||
The RocketMQSource is based on RocketMQ pull consumer mode, and provides exactly once reliability guarantees when checkpoints are enabled. | ||
Otherwise, the source doesn't provide any reliability guarantees. | ||
|
||
### KeyValueDeserializationSchema | ||
The main API for deserializing topic and tags is the `org.apache.rocketmq.flink.common.serialization.KeyValueDeserializationSchema` interface. | ||
`rocketmq-flink` includes general purpose `KeyValueDeserializationSchema` implementations called `SimpleKeyValueDeserializationSchema`. | ||
|
||
```java | ||
public interface KeyValueDeserializationSchema<T> extends ResultTypeQueryable<T>, Serializable { | ||
T deserializeKeyAndValue(byte[] key, byte[] value); | ||
} | ||
``` | ||
|
||
## RocketMQSink | ||
To use the `RocketMQSink`, you construct an instance of it by specifying KeyValueSerializationSchema & TopicSelector instances and a Properties instance which including rocketmq configs. | ||
`RocketMQSink(KeyValueSerializationSchema<IN> schema, TopicSelector<IN> topicSelector, Properties props)` | ||
The RocketMQSink provides at-least-once reliability guarantees when checkpoints are enabled and `withBatchFlushOnCheckpoint(true)` is set. | ||
Otherwise, the sink reliability guarantees depends on rocketmq producer's retry policy, for this case, the messages sending way is sync by default, | ||
but you can change it by invoking `withAsync(true)`. | ||
|
||
### KeyValueSerializationSchema | ||
The main API for serializing topic and tags is the `org.apache.rocketmq.flink.common.serialization.KeyValueSerializationSchema` interface. | ||
`rocketmq-flink` includes general purpose `KeyValueSerializationSchema` implementations called `SimpleKeyValueSerializationSchema`. | ||
|
||
```java | ||
public interface KeyValueSerializationSchema<T> extends Serializable { | ||
|
||
byte[] serializeKey(T tuple); | ||
|
||
byte[] serializeValue(T tuple); | ||
} | ||
``` | ||
|
||
### TopicSelector | ||
The main API for selecting topic and tags is the `org.apache.rocketmq.flink.common.selector.TopicSelector` interface. | ||
`rocketmq-flink` includes general purpose `TopicSelector` implementations called `DefaultTopicSelector` and `SimpleTopicSelector`. | ||
|
||
```java | ||
public interface TopicSelector<T> extends Serializable { | ||
|
||
String getTopic(T tuple); | ||
|
||
String getTag(T tuple); | ||
} | ||
``` | ||
|
||
## Examples | ||
The following is an example which receive messages from RocketMQ brokers and send messages to broker after processing. | ||
|
||
```java | ||
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); | ||
|
||
// enable checkpoint | ||
env.enableCheckpointing(3000); | ||
|
||
Properties consumerProps = new Properties(); | ||
consumerProps.setProperty(RocketMqConfig.NAME_SERVER_ADDR, "localhost:9876"); | ||
consumerProps.setProperty(RocketMqConfig.CONSUMER_GROUP, "c002"); | ||
consumerProps.setProperty(RocketMqConfig.CONSUMER_TOPIC, "flink-source2"); | ||
|
||
Properties producerProps = new Properties(); | ||
producerProps.setProperty(RocketMqConfig.NAME_SERVER_ADDR, "localhost:9876"); | ||
|
||
env.addSource(new RocketMQSource(new SimpleKeyValueDeserializationSchema("id", "address"), consumerProps)) | ||
.name("rocketmq-source") | ||
.setParallelism(2) | ||
.process(new ProcessFunction<Map, Map>() { | ||
@Override | ||
public void processElement(Map in, Context ctx, Collector<Map> out) throws Exception { | ||
HashMap result = new HashMap(); | ||
result.put("id", in.get("id")); | ||
String[] arr = in.get("address").toString().split("\\s+"); | ||
result.put("province", arr[arr.length-1]); | ||
out.collect(result); | ||
} | ||
}) | ||
.name("upper-processor") | ||
.setParallelism(2) | ||
.addSink(new RocketMQSink(new SimpleKeyValueSerializationSchema("id", "province"), | ||
new DefaultTopicSelector("flink-sink2"), producerProps).withBatchFlushOnCheckpoint(true)) | ||
.name("rocketmq-sink") | ||
.setParallelism(2); | ||
|
||
try { | ||
env.execute("rocketmq-flink-example"); | ||
} catch (Exception e) { | ||
e.printStackTrace(); | ||
} | ||
``` | ||
|
||
## Configurations | ||
The following configurations are all from the class `org.apache.rocketmq.flink.RocketMQConfig`. | ||
|
||
### Producer Configurations | ||
| NAME | DESCRIPTION | DEFAULT | | ||
| ------------- |:-------------:|:------:| | ||
| nameserver.address | name server address *Required* | null | | ||
| nameserver.poll.interval | name server poll topic info interval | 30000 | | ||
| brokerserver.heartbeat.interval | broker server heartbeat interval | 30000 | | ||
| producer.group | producer group | `UUID.randomUUID().toString()` | | ||
| producer.retry.times | producer send messages retry times | 3 | | ||
| producer.timeout | producer send messages timeout | 3000 | | ||
|
||
|
||
### Consumer Configurations | ||
| NAME | DESCRIPTION | DEFAULT | | ||
| ------------- |:-------------:|:------:| | ||
| nameserver.address | name server address *Required* | null | | ||
| nameserver.poll.interval | name server poll topic info interval | 30000 | | ||
| brokerserver.heartbeat.interval | broker server heartbeat interval | 30000 | | ||
| consumer.group | consumer group *Required* | null | | ||
| consumer.topic | consumer topic *Required* | null | | ||
| consumer.tag | consumer topic tag | * | | ||
| consumer.offset.reset.to | what to do when there is no initial offset on the server | latest/earliest/timestamp | | ||
| consumer.offset.from.timestamp | the timestamp when `consumer.offset.reset.to=timestamp` was set | `System.currentTimeMillis()` | | ||
| consumer.offset.persist.interval | auto commit offset interval | 5000 | | ||
| consumer.pull.thread.pool.size | consumer pull thread pool size | 20 | | ||
| consumer.batch.size | consumer messages batch size | 32 | | ||
| consumer.delay.when.message.not.found | the delay time when messages were not found | 10 | | ||
|
||
|
||
## License | ||
|
||
Licensed to the Apache Software Foundation (ASF) under one | ||
or more contributor license agreements. See the NOTICE file | ||
distributed with this work for additional information | ||
regarding copyright ownership. The ASF licenses this file | ||
to you under the Apache License, Version 2.0 (the | ||
"License"); you may not use this file except in compliance | ||
with the License. You may obtain a copy of the License at | ||
|
||
http://www.apache.org/licenses/LICENSE-2.0 | ||
|
||
Unless required by applicable law or agreed to in writing, | ||
software distributed under the License is distributed on an | ||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
KIND, either express or implied. See the License for the | ||
specific language governing permissions and limitations | ||
under the License. |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,174 @@ | ||
<?xml version="1.0" encoding="UTF-8"?> | ||
<!-- | ||
Licensed to the Apache Software Foundation (ASF) under one or more | ||
contributor license agreements. See the NOTICE file distributed with | ||
this work for additional information regarding copyright ownership. | ||
The ASF licenses this file to You under the Apache License, Version 2.0 | ||
(the "License"); you may not use this file except in compliance with | ||
the License. You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
--> | ||
<project xmlns="http://maven.apache.org/POM/4.0.0" | ||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | ||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
<modelVersion>4.0.0</modelVersion> | ||
|
||
<groupId>org.apache.rocketmq</groupId> | ||
<artifactId>rocketmq-flink</artifactId> | ||
<version>0.0.1-SNAPSHOT</version> | ||
<packaging>jar</packaging> | ||
|
||
<properties> | ||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> | ||
<!--maven properties --> | ||
<maven.test.skip>false</maven.test.skip> | ||
<maven.javadoc.skip>false</maven.javadoc.skip> | ||
<!-- compiler settings properties --> | ||
<maven.compiler.source>1.8</maven.compiler.source> | ||
<maven.compiler.target>1.8</maven.compiler.target> | ||
<rocketmq.version>4.2.0</rocketmq.version> | ||
<flink.version>1.4.0</flink.version> | ||
<commons-lang.version>2.5</commons-lang.version> | ||
<scala.binary.version>2.11</scala.binary.version> | ||
</properties> | ||
|
||
<dependencies> | ||
<dependency> | ||
<groupId>org.apache.flink</groupId> | ||
<artifactId>flink-java</artifactId> | ||
<version>${flink.version}</version> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.flink</groupId> | ||
<artifactId>flink-streaming-java_${scala.binary.version}</artifactId> | ||
<version>${flink.version}</version> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.flink</groupId> | ||
<artifactId>flink-clients_${scala.binary.version}</artifactId> | ||
<version>${flink.version}</version> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.flink</groupId> | ||
<artifactId>flink-queryable-state-runtime_${scala.binary.version}</artifactId> | ||
<version>${flink.version}</version> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.rocketmq</groupId> | ||
<artifactId>rocketmq-client</artifactId> | ||
<version>${rocketmq.version}</version> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.rocketmq</groupId> | ||
<artifactId>rocketmq-common</artifactId> | ||
<version>${rocketmq.version}</version> | ||
<exclusions> | ||
<exclusion> | ||
<groupId>io.netty</groupId> | ||
<artifactId>netty-tcnative</artifactId> | ||
</exclusion> | ||
</exclusions> | ||
</dependency> | ||
|
||
<dependency> | ||
<groupId>commons-lang</groupId> | ||
<artifactId>commons-lang</artifactId> | ||
<version>${commons-lang.version}</version> | ||
</dependency> | ||
|
||
<!--test --> | ||
<dependency> | ||
<groupId>junit</groupId> | ||
<artifactId>junit</artifactId> | ||
<scope>test</scope> | ||
<version>4.12</version> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.powermock</groupId> | ||
<artifactId>powermock-module-junit4</artifactId> | ||
<version>1.5.5</version> | ||
<scope>test</scope> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.powermock</groupId> | ||
<artifactId>powermock-api-mockito</artifactId> | ||
<version>1.5.5</version> | ||
<scope>test</scope> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.rocketmq</groupId> | ||
<artifactId>rocketmq-namesrv</artifactId> | ||
<version>${rocketmq.version}</version> | ||
<scope>test</scope> | ||
</dependency> | ||
<dependency> | ||
<groupId>org.apache.rocketmq</groupId> | ||
<artifactId>rocketmq-broker</artifactId> | ||
<version>${rocketmq.version}</version> | ||
<scope>test</scope> | ||
</dependency> | ||
</dependencies> | ||
|
||
<build> | ||
<plugins> | ||
<plugin> | ||
<artifactId>maven-compiler-plugin</artifactId> | ||
<version>3.5.1</version> | ||
<configuration> | ||
<source>${maven.compiler.source}</source> | ||
<target>${maven.compiler.target}</target> | ||
<encoding>UTF-8</encoding> | ||
<compilerVersion>${maven.compiler.source}</compilerVersion> | ||
<showDeprecation>true</showDeprecation> | ||
<showWarnings>true</showWarnings> | ||
</configuration> | ||
</plugin> | ||
<plugin> | ||
<groupId>org.apache.maven.plugins</groupId> | ||
<artifactId>maven-surefire-plugin</artifactId> | ||
<version>2.12.4</version> | ||
<configuration> | ||
<skipTests>${maven.test.skip}</skipTests> | ||
</configuration> | ||
</plugin> | ||
<plugin> | ||
<groupId>org.apache.rat</groupId> | ||
<artifactId>apache-rat-plugin</artifactId> | ||
<version>0.12</version> | ||
<configuration> | ||
<excludes> | ||
<exclude>README.md</exclude> | ||
</excludes> | ||
</configuration> | ||
</plugin> | ||
<plugin> | ||
<artifactId>maven-checkstyle-plugin</artifactId> | ||
<version>2.17</version> | ||
<executions> | ||
<execution> | ||
<id>verify</id> | ||
<phase>verify</phase> | ||
<configuration> | ||
<configLocation>style/rmq_checkstyle.xml</configLocation> | ||
<encoding>UTF-8</encoding> | ||
<consoleOutput>true</consoleOutput> | ||
<failsOnError>true</failsOnError> | ||
<includeTestSourceDirectory>false</includeTestSourceDirectory> | ||
<includeTestResources>false</includeTestResources> | ||
</configuration> | ||
<goals> | ||
<goal>check</goal> | ||
</goals> | ||
</execution> | ||
</executions> | ||
</plugin> | ||
</plugins> | ||
</build> | ||
</project> |
Oops, something went wrong.