目录

  1. Rocketmq基础组件讲解
  2. Rocketmq安装
  3. Rocketmq图形化界面安装与使用
  4. Springboot与RocketMq的整合
  5. Rocketmq主从模式搭建

Rocketmq基础组件讲解

Apache RocketMQ作为阿里开源的一款高性能,高吞吐量的分布式消息中间件
Rocketmq作为阿里主推的消息队列拥有以下特点

支持Broker和Consumer端消息过滤
支持发布订阅和点对点
支持pull拉和push推两种消息模式
单一队列亿级消息堆积
支持单master节点,多master节点,多master和多slave节点
任意一个节点都是高可用,水平扩展,Producer,Consumer,Queue都可以分布式
消息失败重试机制,支持特定Level的定时消息
底层采用netty
4.3.x以后支持分布式事务
适合金融业务,高可用性跟踪和审计功能

Rocketmq节点的说明

Producer消息生产者
Producer Group消息生产组,发送同类消息的一个消息生产组
Consumer消费者
Consumer Group消费同类消息的多个实例
Tag子主题,对topic近一步细化,用于区分同一主题下的不同业务的消息
Topic主题:订单类消息主题,新闻类消息主题,是一个逻辑管理单位·,一个topic可以有多个queue,默认创建是4个手动创建是8个
Message每个消息必须指定一个Topic
BrokerMQ程序,接收生产者的消息,提供给消费者的程序
Name Server给生产者和消费者提供路由信息,可以理解为注册中心
Offset偏移量,可以理解为消息的进度
Commit Log消息存储会写在Commit Log文件里

Rocketmq安装

本文参照官网安装手册:http://rocketmq.apache.org/docs/quick-start/
下载安装包:https://archive.apache.org/dist/rocketmq/4.7.0/rocketmq-all-4.7.0-source-release.zip

先决条件:
在这里插入图片描述
1.jdk安装 https://blog.csdn.net/gcxzflgl/article/details/106373435
2.maven安装 https://blog.csdn.net/qq_38270106/article/details/97764483

安装过程:
1.下载4.7.0版本的安装压缩包

wget https://archive.apache.org/dist/rocketmq/4.7.0/rocketmq-all-4.7.0-source-release.zip

2.解压包 tar -zxvf rocketmq-all-4.7.0-source-release.zip -C ../module/
3.进入解压后目录 进行 maven编译,初次编译时间较长,可以打两盘王者再回来

cd rocketmq-all-4.7.0-source-release/
mvn -Prelease-all -DskipTests clean install -U 
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for Apache RocketMQ 4.7.0 4.7.0:
[INFO] 
[INFO] Apache RocketMQ 4.7.0 .............................. SUCCESS [25:15 min]
[INFO] rocketmq-logging 4.7.0 ............................. SUCCESS [02:53 min]
[INFO] rocketmq-remoting 4.7.0 ............................ SUCCESS [04:06 min]
[INFO] rocketmq-common 4.7.0 .............................. SUCCESS [ 55.674 s]
[INFO] rocketmq-client 4.7.0 .............................. SUCCESS [01:43 min]
[INFO] rocketmq-store 4.7.0 ............................... SUCCESS [01:39 min]
[INFO] rocketmq-srvutil 4.7.0 ............................. SUCCESS [  0.318 s]
[INFO] rocketmq-filter 4.7.0 .............................. SUCCESS [03:15 min]
[INFO] rocketmq-acl 4.7.0 ................................. SUCCESS [ 46.760 s]
[INFO] rocketmq-broker 4.7.0 .............................. SUCCESS [  2.588 s]
[INFO] rocketmq-tools 4.7.0 ............................... SUCCESS [  1.571 s]
[INFO] rocketmq-namesrv 4.7.0 ............................. SUCCESS [  0.634 s]
[INFO] rocketmq-logappender 4.7.0 ......................... SUCCESS [01:03 min]
[INFO] rocketmq-openmessaging 4.7.0 ....................... SUCCESS [  7.243 s]
[INFO] rocketmq-example 4.7.0 ............................. SUCCESS [  0.726 s]
[INFO] rocketmq-test 4.7.0 ................................ SUCCESS [ 30.650 s]
[INFO] rocketmq-distribution 4.7.0 ........................ SUCCESS [16:25 min]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  58:54 min
[INFO] Finished at: 2020-06-15T21:33:09+08:00
[INFO] ------------------------------------------------------------------------

看到以上信息,编译安装成功了

4.进入编译成功后的目录,启动Name Server 和 Broker

cd /opt/module/rocketmq-all-4.7.0-source-release/distribution/target/rocketmq-4.7.0/rocketmq-4.7.0

#启动Name Server
nohup sh bin/mqnamesrv &

#启动Broker
nohup sh bin/mqbroker -n 192.168.126.70:9876 &

5.如果启动broker提示如下错误需要手动调整虚拟机分配内存大小

Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000005c0000000, 8589934592, 0) failed; error='Cannot allocate memory' (errno=12)

vim bin/runbroker.sh
更改67行内存大小(根据自己实际情况调整)

JAVA_OPT="${JAVA_OPT} -server -Xms2g -Xmx2g -Xmn2g"

6.看到如下信息代表成功启动了

[root@localhost rocketmq-4.7.0]# jps
20289 Jps
10278 NamesrvStartup
20203 BrokerStartup

验证服务正常运行

 [root@localhost rocketmq-4.7.0]# export NAMESRV_ADDR=192.168.126.70:9876
 [root@localhost rocketmq-4.7.0]# sh bin/tools.sh org.apache.rocketmq.example.quickstart.Producer
 
 SendResult [sendStatus=SEND_OK, msgId= ...

[root@localhost rocketmq-4.7.0]#  sh bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer
 
 ConsumeMessageThread_%d Receive New Messages: [MessageExt...

7.服务关闭

	[root@localhost rocketmq-4.7.0]#  sh bin/mqshutdown broker
The mqbroker(20203) is running...
Send shutdown request to mqbroker(20203) OK


[root@localhost rocketmq-4.7.0]#  sh bin/mqshutdown namesrv
The mqnamesrv(10278) is running...
Send shutdown request to mqnamesrv(10278) OK

以上就RocketMq 源码安装过程

Rocketmq图形化界面安装与使用

github地址:https://github.com/apache/rocketmq-externals
1.下载下来 进行Maven编译,初次运行需要较长一段时间,打一盘王者的等待时间就够了

cd /opt/module/rocketmq-externals/rocketmq-console

更新项目中的application.yml
设置Name Server连接地址
rocketmq.config.namesrvAddr=192.168.126.70:9876 

#进行编译
mvn clean package -Dmaven.test.skip=true 

2.看到以下信息代表编译安装成功

[INFO] 
[INFO] >>> maven-source-plugin:3.0.1:jar (attach-sources) > generate-sources @ rocketmq-console-ng >>>
[INFO] 
[INFO] --- maven-checkstyle-plugin:2.17:check (validate) @ rocketmq-console-ng ---
[INFO] Starting audit...
Audit done.
[INFO] 
[INFO] --- jacoco-maven-plugin:0.7.9:prepare-agent (default-prepare-agent) @ rocketmq-console-ng ---
[INFO] argLine set to -javaagent:/root/.m2/repository/org/jacoco/org.jacoco.agent/0.7.9/org.jacoco.agent-0.7.9-runtime.jar=destfile=/opt/module/rocketmq-externals/rocketmq-console/target/jacoco.exec
[INFO] 
[INFO] <<< maven-source-plugin:3.0.1:jar (attach-sources) < generate-sources @ rocketmq-console-ng <<<
[INFO] 
[INFO] 
[INFO] --- maven-source-plugin:3.0.1:jar (attach-sources) @ rocketmq-console-ng ---
[INFO] Building jar: /opt/module/rocketmq-externals/rocketmq-console/target/rocketmq-console-ng-1.0.0-sources.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  25:22 min
[INFO] Finished at: 2020-06-15T22:31:28+08:00
[INFO] ------------------------------------------------------------------------
[root@localhost rocketmq-console]# 

3.进入target包中执行 Java -jar rocketmq-console-ng-1.0.0.jar 访问http://192.168.126.70:8080端口查看图形化界面
在这里插入图片描述
4.图形化界面上测试产生消息,shell进行消费
在这里插入图片描述
发送消息
在这里插入图片描述
消息产生成功
在这里插入图片描述

shell端进行消费

[root@localhost rocketmq-4.7.0]# sh bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer

22:51:16.498 [main] DEBUG i.n.u.i.l.InternalLoggerFactory - Using SLF4J as the default logging framework
Consumer Started.
ConsumeMessageThread_1 Receive New Messages: [MessageExt [brokerName=localhost.localdomain, queueId=2, storeSize=188, queueOffset=250, sysFlag=0, bornTimestamp=1592232237604, bornHost=/192.168.126.70:47422, st
oreTimestamp=1592232237617, storeHost=/192.168.126.70:10911, msgId=C0A87E4600002A9F000000000002BEB2, commitLogOffset=179890, bodyCRC=691830935, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='TopicTest', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=251, KEYS=gcx, CONSUME_START_TIME=1592232676926, UNIQ_KEY=C0A87E465259681A95154CF9C6240000, WAIT=true, TAGS=tag}, body=[116, 111, 100, 97, 121, 32, 105, 115, 32, 97, 32, 104, 111, 116, 32, 100, 97, 121], transactionId='null'}]] 

查看图形界面已经被消费掉,延时队列清空
在这里插入图片描述
首页仪表盘查看刚刚新增的消息
在这里插入图片描述

Springboot与RocketMq的整合

1)创建springboot工程
2)添加pom.xml依赖

<dependency>
     <groupId>org.apache.rocketmq</groupId>
     <artifactId>rocketmq-client</artifactId>
     <version>4.7.0</version>
 </dependency>

3)jms简易配置(只是为了演示整合功能,实际中放到工程配置文件中)

package com.gcxzflgl.rocketmq.jms;

public class JmsConfig {

    public static final String NAME_SERVER = "192.168.126.70:9876";

    public static final String TOPIC = "autoCreateTopic";

}

生产者:

package com.gcxzflgl.rocketmq.jms;

import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.springframework.stereotype.Component;

@Component
public class PayProducer {

    private String producerGroup = "pay_producer_group";

    private DefaultMQProducer producer;


    public  PayProducer(){
        producer = new DefaultMQProducer(producerGroup);

        producer.setNamesrvAddr(JmsConfig.NAME_SERVER);
        start();
    }

    public DefaultMQProducer getProducer(){
        return this.producer;
    }

    /**
     * 对象在使用之前必须要调用一次,只能初始化一次
     */
    public void start(){
        try {
            this.producer.start();
        } catch (MQClientException e) {
            e.printStackTrace();
        }
    }


    /**
     * 一般在应用上下文,使用上下文监听器,进行关闭
     */
    public void shutdown(){
        this.producer.shutdown();
    }


}

消费者:

package com.gcxzflgl.rocketmq.jms;

import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.common.message.MessageExt;
import org.springframework.stereotype.Component;

import java.io.UnsupportedEncodingException;
import java.util.List;

@Component
public class PayConsumer {


    private DefaultMQPushConsumer consumer;

    private String consumerGroup = "pay_consumer_group";

    public  PayConsumer() throws MQClientException {

        consumer = new DefaultMQPushConsumer(consumerGroup);
        consumer.setNamesrvAddr(JmsConfig.NAME_SERVER);
        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_LAST_OFFSET);

        consumer.subscribe(JmsConfig.TOPIC, "*");

        //当有消息来临时触发监听
        consumer.registerMessageListener((MessageListenerConcurrently) (msgs, context) -> {
            try {
                Message msg = msgs.get(0);
                System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), new String(msgs.get(0).getBody()));
                String topic = msg.getTopic();
                String body = new String(msg.getBody(), "utf-8");
                String tags = msg.getTags();
                String keys = msg.getKeys();
                System.out.println("topic=" + topic + ", tags=" + tags + ", keys=" + keys + ", msg=" + body);
                //消息成功接收告诉Broker更新消息状态
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                return ConsumeConcurrentlyStatus.RECONSUME_LATER;
            }
        });



        consumer.start();
        System.out.println("consumer start ...");
    }

}
rest访问层

```java
package com.gcxzflgl.rocketmq.rest;

import com.gcxzflgl.rocketmq.jms.JmsConfig;
import com.gcxzflgl.rocketmq.jms.PayProducer;
import org.apache.rocketmq.client.exception.MQBrokerException;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.exception.RemotingException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;

@RestController
public class PayController {

    @Autowired
    private PayProducer payProducer;


    @RequestMapping("/api/v1/pay_cb")
    public Object callback(String text) throws InterruptedException, RemotingException, MQClientException, MQBrokerException {

        Message message = new Message(JmsConfig.TOPIC,"taga", ("hello gcx rocketmq = "+text).getBytes() );

        SendResult sendResult = payProducer.getProducer().send(message);
        System.out.println(sendResult);

        return "消息生产成功!";
    }

}

4) 启动项目 访问地址: http://localhost:8080/api/v1/pay_cb?text=瑞燊儿
进行生产生产消息
在这里插入图片描述
idea控制台打印:

SendResult [sendStatus=SEND_OK, msgId=AC24915B518418B4AAC251B3B31C0000, offsetMsgId=C0A87E4600002A9F000000000002C035, messageQueue=MessageQueue [topic=autoCreateTopic, brokerName=rocketmq-master, queueId=2], queueOffset=0]
ConsumeMessageThread_1 Receive New Messages: hello gcx rocketmq = 瑞燊儿 
topic=autoCreateTopic, tags=taga, keys=null, msg=hello gcx rocketmq = 瑞燊儿

Rocketmq主从模式搭建

安装步骤

1 . 前面已经讲解过单机安装过程,我们在以安装Rocktmq的机器上进行克隆,克隆过程不再讲解。确保两台机器上(192.168.126.70、192.168.126.71)上都安装jdk1.8、maven 3.2+ 。

2 . 进入指定目录复制一份作为演示的主从节点配置(两台机器都要执行)

cd /opt/module/rocketmq-all-4.7.0-source-release/distribution/target/rocketmq-4.7.0/rocketmq-4.7.0/conf

cp -r 2m-2s-async/ m-s-async-disk

3 . 更改配置信息
master 节点:192.168.126.70
vim broker-a.proterties

namesrvAddr=192.168.126.70:9876;192.168.126.71:9876 
brokerClusterName=GcxCluster
brokerName=broker-a #主节点和从节点名字需要相同
brokerId=0
deleteWhen=04
fileReservedTime=48
brokerRole=ASYNC_MASTER   #主节点
flushDiskType=ASYNC_FLUSH #异步刷写到磁盘

slave 节点:192.168.126.71
vim broker-a-s.properties

namesrvAddr=192.168.126.70:9876;192.168.126.71:9876
brokerClusterName=GcxCluster
brokerName=broker-a #主节点和从节点名字需要相同
brokerId=1
deleteWhen=04
fileReservedTime=48
brokerRole=SLAVE  	#从节点
flushDiskType=ASYNC_FLUSH  #异步刷写到磁盘

4.启动服务
主节点:

nohup sh bin/mqnamesrv &
nohup sh bin/mqbroker -c conf/m-s-async-disk/broker-a.properties &

从节点:

nohup sh bin/mqnamesrv &
nohup sh bin/mqbroker -c conf/m-s-async-disk/broker-a-s.properties &

5.使用可视化控制台查看节点模式
在这里插入图片描述
至此,Rocketmq主从节点搭建完毕!

主从同步讲解
  1. Broker分为master和slave,一个master可以对应多个slave,反之不可以。master与slaver通过相同的Broker Name来匹配,不用的Broker id来定义是master还是slave。Broker向所有的NameServer节点建立长连接,定时注册topic和发送元数据信息。NameServer定时(120s)扫描存活的Broker链接,超时没响应断开心跳检测,对于consumer客户端不能感知。consumer定时(30s)从NameServer获取topic的信息,当Broker不可用时,consumer最多需要30s才会发现
  2. 只有master能进行写操作,slave不能进行写入操作,同步策略取决于master
  3. 客户端消费可以从master和slave消费,默认消费者都从master消费,如果master挂掉后,客户端从NameServer感知Broker宕机,就会从slave进行消费,感知并非实时,slave不能保证master 100%的消息都同步过来了,会存在少量丢失,一旦master恢复,未同步过去的消息会被消费掉。
  4. 如果consumer实例的数量多于message queue的数量,多出来的consumer将无法分配到queue,无法起到负载均衡的作用,所以需要控制message queue的数量大于等于consumer的数量最好是成倍关系。

至此,RocketMq的使用讲解完毕!

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