rocketmq 安装、集成、使用

安装

rocketmq基于Java编写，首先需要jdk环境

1：可以下载source,编译。

https://mirror.bit.edu.cn/apache/rocketmq/4.7.1/rocketmq-all-4.7.1-source-release.zip

// 也可以直接下载bin文件

https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.7.1/rocketmq-all-4.7.1-bin-release.zip

2：windows和linux都可以解压使用。

因为内存的问题，最好注意下内存的使用大小：

vi runbroker.cmd,需要注意最后的 set "JAVA_OPT=%JAVA_OPT% -cp "%CLASSPATH%"

@echo off
rem Licensed to the Apache Software Foundation (ASF) under one or more
rem contributor license agreements.  See the NOTICE file distributed with
rem this work for additional information regarding copyright ownership.
rem The ASF licenses this file to You under the Apache License, Version 2.0
rem (the "License"); you may not use this file except in compliance with
rem the License.  You may obtain a copy of the License at
rem
rem     http://www.apache.org/licenses/LICENSE-2.0
rem
rem Unless required by applicable law or agreed to in writing, software
rem distributed under the License is distributed on an "AS IS" BASIS,
rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rem See the License for the specific language governing permissions and
rem limitations under the License.

if not exist "%JAVA_HOME%\bin\java.exe" echo Please set the JAVA_HOME variable in your environment, We need java(x64)! & EXIT /B 1
set "JAVA=%JAVA_HOME%\bin\java.exe"

setlocal

set BASE_DIR=%~dp0
set BASE_DIR=%BASE_DIR:~0,-1%
for %%d in (%BASE_DIR%) do set BASE_DIR=%%~dpd

set CLASSPATH=.;%BASE_DIR%conf;%CLASSPATH%

rem ===========================================================================================
rem  JVM Configuration
rem ===========================================================================================
set "JAVA_OPT=%JAVA_OPT% -server -Xms2g -Xmx2g -Xmn1g"
set "JAVA_OPT=%JAVA_OPT% -XX:+UseG1GC -XX:G1HeapRegionSize=16m -XX:G1ReservePercent=25 -XX:InitiatingHeapOccupancyPercent=30 -XX:SoftRefLRUPolicyMSPerMB=0 -XX:SurvivorRatio=8"
set "JAVA_OPT=%JAVA_OPT% -verbose:gc -Xloggc:%USERPROFILE%\mq_gc.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCApplicationStoppedTime -XX:+PrintAdaptiveSizePolicy"
set "JAVA_OPT=%JAVA_OPT% -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=30m"
set "JAVA_OPT=%JAVA_OPT% -XX:-OmitStackTraceInFastThrow"
set "JAVA_OPT=%JAVA_OPT% -XX:+AlwaysPreTouch"
set "JAVA_OPT=%JAVA_OPT% -XX:MaxDirectMemorySize=15g"
set "JAVA_OPT=%JAVA_OPT% -XX:-UseLargePages -XX:-UseBiasedLocking"
set "JAVA_OPT=%JAVA_OPT% -Djava.ext.dirs=%BASE_DIR%lib"
set "JAVA_OPT=%JAVA_OPT% -cp "%CLASSPATH%"

"%JAVA%" %JAVA_OPT% %*

linux 启动需要注意内存

vi runbroker.sh文件：

JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m"
JAVA_OPT="${JAVA_OPT} -XX:+UseG1GC -XX:G1HeapRegionSize=16m -XX:G1ReservePercent=25 -XX:InitiatingHeapOccupancyPercent=30 -XX:SoftRefLRUPolicyMSPerMB=0"
JAVA_OPT="${JAVA_OPT} -verbose:gc -Xloggc:${GC_LOG_DIR}/rmq_broker_gc_%p_%t.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCApplicationStoppedTime -XX:+PrintAdaptiveSizePolicy"
JAVA_OPT="${JAVA_OPT} -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=30m"
JAVA_OPT="${JAVA_OPT} -XX:-OmitStackTraceInFastThrow"
JAVA_OPT="${JAVA_OPT} -XX:+AlwaysPreTouch"
JAVA_OPT="${JAVA_OPT} -XX:MaxDirectMemorySize=512m"
JAVA_OPT="${JAVA_OPT} -XX:-UseLargePages -XX:-UseBiasedLocking"
JAVA_OPT="${JAVA_OPT} -Djava.ext.dirs=${JAVA_HOME}/jre/lib/ext:${BASE_DIR}/lib:${JAVA_HOME}/lib/ext"
#JAVA_OPT="${JAVA_OPT} -Xdebug -Xrunjdwp:transport=dt_socket,address=9555,server=y,suspend=n"
JAVA_OPT="${JAVA_OPT} ${JAVA_OPT_EXT}"
JAVA_OPT="${JAVA_OPT} -cp ${CLASSPATH}"

启动

windows 启动

mqnamesrv.cmd start mqbroker.cmd -n 127.0.0.1:9876 autoCreateTopicEnable=true

linux 启动：

# 启动命令，并且常驻内存，nohup 属于后台启动，当前目录下生成 nohup.out 日志文件，也可以指定日志输出位置。

# sh bin/mqnamesrv ：属于终端启动，直接输出日志信息，按 ctrl+c 可直接关闭退出

$ nohup sh bin/mqnamesrv &

# 查看启动日志，能看到 "The Name Server boot success" 字样则成功

$ tail -f ~/logs/rocketmqlogs/namesrv.log

如下所示，看到 “ The Name Server boot success. serializeType=JSON  ” 表示启动成功

启动broker

# 启动命令，并且常驻内存，nohup 属于后台启动，当前目录下生成 nohup.out 日志文件，也可以指定日志输出位置。nohup sh bin/mqbroker -n localhost:9876 &
sh bin/mqbroker -n localhost:9876 ：属于终端启动，直接输出日志信息，按 ctrl+c 可直接关闭退出
# 查看启动日志tail -f ~/logs/rocketmqlogs/broker.log

参考资料：

rocketmq安装及内存调整

安装 rocketmq-console...

下载源码。修改配置，编译安装。

https://github.com/apache/rocketmq-externals

2. 找到rocketmq-console，先编辑一下rocketmq-console里面的application.properties文件，将项目使用的rocketmq.config.namesrvAddr配置上去（或者在项目启动时，以参数的形式配进去）

mvn clean package -Dmaven.test.skip=true

java -jar rocketmq-console-ng-1.0.0.jar --server.port=12581 --rocketmq.config.namesrvAddr=182.254.140.224:9876

上面启动了，就可以在浏览器访问

http://localhost:12581

集成：

添加依赖：

<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-client</artifactId>
    <version>4.3.0</version>
</dependency>

编写消息发送类SyncProducer：

public static void main(String[] args) throws Exception {
    //Instantiate with a producer group name.
    DefaultMQProducer producer = new
            DefaultMQProducer("pesm-group");
    // Specify name server addresses.
    producer.setNamesrvAddr("10.248.27.116:9876");
    //Launch the instance.
    producer.start();
    for (int i = 0; i < 100; i++) {
        //Create a message instance, specifying topic, tag and message body.
        Message msg = new Message("pesm-topic" /* Topic */,
                "TagA" /* Tag */,
                ("Hello RocketMQ " +
                        i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
        );
        //Call send message to deliver message to one of brokers.
        SendResult sendResult = producer.send(msg);
        System.out.printf("%s%n", sendResult);
    }
    //Shut down once the producer instance is not longer in use.
    producer.shutdown();
}

编写消费者类：

DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(groupName);
consumer.setNamesrvAddr(nameSrvAddr);

consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);

consumer.subscribe(topicName, "*");
// 监听需要实现MessageListenerConcurrently接口。代码如下
consumer.registerMessageListener(warnDataListener);

consumer.start();

监听处理：