简单搭建一个RocketMQ服务(包括运维服务以及测试代码)

一、环境说明:Linux系统,JDK1.8,RocketMQ版本4.9.4

二、RocketMQ下载地址:https://archive.apache.org/dist/rocketmq/

 三、RocketMQ安装

1、项目解压

unzip rocketmq-all-4.9.4-bin-release.zip

注意:如果提示unzip命令不存在,安装命令apt install unzip

2、修改启动配置(主要是修改默认内存设置,不然容易报错:insufficient memory)

对应目录下:/home/rocketmq-all-4.9.4-bin-release/bin

1)修改runserver.sh文件

 2)修改runbroker.sh文件

 3)修改tools.sh文件

3、修改broker.conf配置(目前我们只搭建一个master)

对应目录下:/home/rocketmq-all-4.9.4-bin-release/conf

namesrvAddr=(当前服务器IP):9876

brokerIP1=(当前服务器IP)

 四、RocketMQ启动

在目录下/home/rocketmq-all-4.9.4-bin-release

1、nohup sh bin/mqnamesrv > logs/mqnamesrv.out &

如下表示启动成功

2、nohup sh bin/mqbroker -n (当前服务器IP):9876 -c ./conf/broker.conf >logs/broker.out &

如下表示启动成功

 五、简单测试一下(官方案例)

export NAMESRV_ADDR=localhost:9876
sh bin/tools.sh org.apache.rocketmq.example.quickstart.Producer

注意:在目录下/home/rocketmq-all-4.9.4-bin-release

这里作为生产者生产1000条消息,运行完自动结束,之后运行下面代码:

sh bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer

这里作为消费者消费1000条消息。

六、关闭服务

是按照启动服务相反的来关闭的

在目录下/home/rocketmq-all-4.9.4-bin-release依次运行如下代码

sh bin/mqshutdown broker
sh bin/mqshutdown namesrv

注意:有可能会在第五步测试的时候出现:service not available now, maybe disk full....

这是因为,RocketMQ有一个默认磁盘的使用率,超过这个使用率,这就报这个错。

解决方案:

1)删除磁盘中不必要的文件

2)在broker.conf中添加diskMaxUsedSpaceRatio=99

 

七、搭建运维服务(rocketmq-console)

1、下载开源的rocketmq-externals项目

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

找到rocketmq-console项目,修改application.properties文件

server.port=10003(随便哪个不常用的)

rocketmq.config.namesrvAddr=(和第四步中修改broker.conf的IP一致):9876

 

pom.xml文件中将<rocketmq.version>4.4.0-SNAPSHOT</rocketmq.version> 改成<rocketmq.version>4.4.0</rocketmq.version>

 

2、打包

mvn clean package -Dmaven.test.skip=true

最后在target文件夹中有个rocketmq-console-ng-1.0.0.jar

PS:

1)需要配置好maven的环境,不然会出现没有该命令

2)最好在rocketmq-console目录下的命令提示符中输入命令,用powershell窗口有报错

3)如果打包出现“You must specify a valid lifecycle phase or a goal in the format”,在pom.xml中的<build>添加<defaultGoal>compile</defaultGoal>

 3、启动服务

nohup java -jar rocketmq-console-ng-1.0.0.jar >console.out &

4、控制台界面:

http://xxx.xxx.xxx.xxx:10003/index.html,可以切换语言

 

 八、测试代码(简单的工具类方法)

maven加入jar包,需要与你上面下载的RocketMQ版本对应上

<dependency>
	<groupId>org.apache.rocketmq</groupId>
	<artifactId>rocketmq-client</artifactId>
	<version>4.9.4</version>
</dependency>
<dependency>
	<groupId>org.apache.rocketmq</groupId>
	<artifactId>rocketmq-common</artifactId>
	<version>4.9.4</version>
</dependency>

 

代码如下:  

package com.sigma.common.rocketmq.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.*;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.common.message.MessageExt;
import org.apache.rocketmq.common.protocol.heartbeat.MessageModel;
import org.apache.rocketmq.remoting.common.RemotingHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.List;

public class RocketMqUtils {
    private static Logger logger = LoggerFactory.getLogger(RocketMqUtils.class);

    private String namesrvAddr;//rocketmq服务地址,多个用;号隔开
    private String tags;//标识,这里为null,可以自行修改
    private static final int timeout = 3000;//发送超时时长


    public RocketMqUtils(String namesrvAddr) {
        this.namesrvAddr = namesrvAddr;
    }

    /**
     * 创建生产者对象
     *
     * @return
     */
    private DefaultMQProducer createMQProducer(String producerId) {
        //生产者的组名
        DefaultMQProducer producer = new DefaultMQProducer(producerId);
        //指定NameServer地址,多个地址以 ; 隔开
        producer.setNamesrvAddr(namesrvAddr);
        //发送消息超时时长设置
        producer.setSendMsgTimeout(timeout);
        //发送失败,重试三次
        producer.setRetryTimesWhenSendFailed(3);
        return producer;
    }

    /**
     * 发送MQ消息
     *
     * @param producerId 生产者
     * @param topic      主题
     * @param msg        消息
     * @param key
     * @return
     * @throws MQClientException
     * @throws Exception
     */
    public SendResult sendMq(String producerId, String topic, String msg, String key) throws MQClientException, Exception {
        return this.sendMq(producerId, topic, msg, key, 0);
    }

    /**
     * @param producerId     生产者
     * @param msg            消息
     * @param delayTimeLevel 消息等级(延后发送),为0则立即发送,等级从1到10
     * @return
     * @throws MQClientException
     * @throws Exception
     */
    public SendResult sendMq(String producerId, String topic, String msg, String key, int delayTimeLevel) throws MQClientException, Exception {
        if (StringUtils.isEmpty(msg)) {
            throw new RuntimeException("send rocket topic<" + topic + "> mq message to List<String> is null ...");
        }
        DefaultMQProducer producer = this.createMQProducer(producerId);
        //delayTimeLevel:定时消息等级,指定的时间后才能传递,不支持任意精度时间。按level等级划分,默认从level=1开始,如果level=0则不延时,具体如messageDelayLevel值
        Message message = new Message(topic, tags, key, msg.getBytes(RemotingHelper.DEFAULT_CHARSET));
        message.setDelayTimeLevel(delayTimeLevel);
        try {
            producer.start();
            return producer.send(message);
        } catch (MQClientException mqce) {
            logger.error("send rocket topic<" + topic + "> rocketMq client error:", mqce);
            throw mqce;
        } catch (Exception e) {
            logger.error("send rocket topic<" + topic + "> rocketMq send msg error:", e);
            throw e;
        } finally {
            //关闭生产者
            producer.shutdown();
        }
    }

    /**
     * 创建消费对象
     *
     * @param consumerId     消费者
     * @param isBroadcasting 是否为广播消费模式
     * @return
     * @throws MQClientException
     */
    private DefaultMQPushConsumer createMqConsumer(String consumerId, String topic, boolean isBroadcasting) throws MQClientException {
        //消费者的组名
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(consumerId);
        //指定NameServer地址,多个地址以 ; 隔开
        consumer.setNamesrvAddr(namesrvAddr);
        //订阅PushTopic下Tag为push的消息
        consumer.subscribe(topic, tags);
        //设置Consumer第一次启动是从队列头部开始消费还是队列尾部开始消费
        //如果非第一次启动,那么按照上次消费的位置继续消费
        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
        //设置消费模式为广播模式,即每个消费者都能接收到所有消息
        if (isBroadcasting) {
            consumer.setMessageModel(MessageModel.BROADCASTING);
        }
        return consumer;
    }

    /**
     * 监听MQ队列,拉取MQ消息并进行消费
     *
     * @param consumerId      消费者
     * @param headerInterface 回调方法
     * @throws MQClientException
     * @throws Exception
     */
    public void pullMq(String consumerId, String topic, HeaderInterface headerInterface) throws MQClientException, Exception {
        this.pullMq(consumerId, topic, headerInterface, false);
    }

    /**
     * 监听MQ队列,拉取MQ消息并进行消费(支持广播消费模式)
     *
     * @param consumerId      消费者
     * @param topic           主题
     * @param headerInterface 回调方法
     * @param isBroadcasting  是否为广播消费模式
     * @throws MQClientException
     * @throws Exception
     */
    public void pullMq(String consumerId, String topic, HeaderInterface headerInterface, boolean isBroadcasting) throws MQClientException, Exception {
        //消费者的组名
        DefaultMQPushConsumer consumer = this.createMqConsumer(consumerId, topic, isBroadcasting);
        try {
            consumer.registerMessageListener(this.setConcurrentlyConsumeMessage(headerInterface));
            consumer.start();
        } catch (Exception e) {
            logger.error("rocketMq pull msg error:", e);
            throw e;
        } finally {
            this.addShutdownHook(consumer);
        }
    }

    /**
     * 消费端默认消息
     *
     * @param headerInterface
     * @return
     */
    private MessageListenerConcurrently setConcurrentlyConsumeMessage(HeaderInterface headerInterface) {
        return (List<MessageExt> list, ConsumeConcurrentlyContext context) -> {
            try {
                for (MessageExt message : list) {
                    headerInterface.execute(message);
                }
            } catch (Exception e) {
                logger.error("rocketMq consumer pull msg error:", e);
                //稍后再试
                return ConsumeConcurrentlyStatus.RECONSUME_LATER;
            }
            //消费成功
            return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
        };
    }

    /**
     * 消费端顺序消息
     *
     * @param headerInterface
     * @return
     */
    private MessageListenerOrderly setOrderlyConsumeMessage(HeaderInterface headerInterface) {
        return (list, context) -> {
            try {
                for (MessageExt message : list) {
                    headerInterface.execute(message);
                }
            } catch (Exception e) {
                logger.error("rocketMq consumer pull msg error:", e);
                //稍后再试
                return ConsumeOrderlyStatus.SUSPEND_CURRENT_QUEUE_A_MOMENT;
            }
            //消费成功
            return ConsumeOrderlyStatus.SUCCESS;
        };
    }

    /**
     * 函数式回调接口
     */
    @FunctionalInterface
    public interface HeaderInterface {
        void execute(MessageExt message) throws IOException;
    }

    /**
     * 注册虚拟机器关机钩子事件
     *
     * @param consumer
     */
    private void addShutdownHook(DefaultMQPushConsumer consumer) {
        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
            logger.info("jvm shutdown hook: close rocketMq consumer server ...");
            consumer.shutdown();
        }));
    }

    public static void main(String[] args) throws Exception {
/*        RocketMqUtils pRocketMqUtils = new RocketMqUtils("xxx.xxx.xxx.xxx:9876");
        //发送同步消息
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("orderId", 12345);
        jsonObject.put("orderCode", "CODE12345");
        jsonObject.put("buyUserId", 123);
        String key = "ORDERID_" + 12345 + "_" + 123;
        pRocketMqUtils.sendMq("cluster-test-group", "test-topic-04", jsonObject.toJSONString(), key);*/

        RocketMqUtils cRocketMqUtils = new RocketMqUtils("xxx.xxx.xxx.xxx:9876");
  
        cRocketMqUtils.pullMq("test-consumer-group", "test-topic-04", (message) -> {
            String messageBody = new String(message.getBody(), RemotingHelper.DEFAULT_CHARSET);
            JSONObject jsonObject = JSON.parseObject(messageBody);
            Integer orderId = jsonObject.getInteger("orderId");
            Integer buyUserId = jsonObject.getInteger("buyUserId");
            String orderCode = jsonObject.getString("orderCode");
            System.out.println(orderId + "====" + buyUserId + "====" + orderCode);
            logger.info("消费响应:key : " + message.getKeys() + ", tag : " + message.getTags() + ",  msgBody : " + messageBody);//输出消息内容
        });
    }
}
posted @ 2022-07-14 19:43  cheFly  阅读(667)  评论(0编辑  收藏  举报