RabbitMQ 安装延迟交换机delay-exchange

安装RabbitMQ 延迟交换机

在三台节点上安装延迟交换机插件

1.进入RabbitMQ 插件目录

cd /usr/lib/rabbitmq/lib/rabbitmq_server-3.6.12/plugins

2.下载延迟插件安装包

wget https://dl.bintray.com/rabbitmq/community-plugins/3.6.x/rabbitmq_delayed_message_exchange/rabbitmq_delayed_message_exchange-20171215-3.6.x.zip

3.解压延迟插件安装包

unzip rabbitmq_delayed_message_exchange-20171215-3.6.x.zip

将RAM 节点修改成DISK 节点

在 RAM 节点上，将节点修改成磁盘节点

rabbitmqctl stop_app

rabbitmqctl change_cluster_node_type disk

rabbitmqctl start_app

启动延迟交换机插件

在三台节点上启动延迟交换机插件

rabbitmq-plugins enable rabbitmq_delayed_message_exchange

 

测试代码：

 

Producer:

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;


public class Producer {
    public static void main(String[] args) throws Exception {
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setVirtualHost("/");
        connectionFactory.setHost("172.31.1.135");
        connectionFactory.setUsername("xx");
        connectionFactory.setPassword("xx");
        connectionFactory.setPort(5672);
        Connection connection = connectionFactory.newConnection();
        Channel channel = connection.createChannel();
        String exchangeName = "delay-exchange";
        String routingkey = "delay.delay";

        String queueName = "delay_queueName";
        //x-delayed-message 声明
        Map<String,Object> map =new HashMap<>();
        map.put("x-delayed-type", "direct");
        channel.exchangeDeclare(exchangeName, "x-delayed-message", true, false, map);
        //注意：arguments需要声明在队列上，声明在交换机上是不会起作用的。
        channel.queueDeclare(queueName, true, false, false, map);
        channel.queueBind(queueName,exchangeName,routingkey);
        for (int i = 0; i < 3; i++) {
             // deliveryMode=2 持久化，expiration 消息有效时间
            String msg = "delayed payload".getBytes("UTF-8") +" "+new Date().getTime();
            byte[] messageBodyBytes = msg.getBytes();
            Map<String, Object> headers = new HashMap<String, Object>();
            headers.put("x-delay", 50000);
            AMQP.BasicProperties.Builder props = new AMQP.BasicProperties.Builder().headers(headers);
            channel.basicPublish(exchangeName, routingkey, props.build(), messageBodyBytes);
        }
    }
}

 

 

Consumer:

import java.io.IOException;
import java.util.Date;

import com.rabbitmq.client.AMQP.BasicProperties;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;


public class Consumer {
    public static void main(String[] args) throws Exception {
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setVirtualHost("/");
        connectionFactory.setHost("172.31.1.135");
        connectionFactory.setPort(5672);
        connectionFactory.setUsername("xxx");
        connectionFactory.setPassword("xxx");
        Connection connection = connectionFactory.newConnection();
        Channel channel = connection.createChannel();
        String queueName = "delay_queueName";
        channel.queueDeclare(queueName,true,false,false,null);

        channel.basicConsume(queueName, false, "myConsumer Tag", new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body) throws IOException {
                  String routingKey = envelope.getRoutingKey();
                  String convernType = properties.getContentType();
                  long deliveryTag = envelope.getDeliveryTag();
                  System.out.println("routingKey:"+routingKey+",convernType:"+convernType+",deliveryTag:"+deliveryTag+",Msg body:"+new String(body)+ " "+new Date().getTime());
                  channel.basicAck(deliveryTag, false);
            }

        });
    }
}

 

执行结果：

 

routingKey:delay.delay,convernType:null,deliveryTag:13,Msg body:[B@387c703b 1575280086578 1575280136587
routingKey:delay.delay,convernType:null,deliveryTag:14,Msg body:[B@50cbc42f 1575280086582 1575280136587
routingKey:delay.delay,convernType:null,deliveryTag:15,Msg body:[B@75412c2f 1575280086582 1575280136587
routingKey:delay.delay,convernType:null,deliveryTag:16,Msg body:[B@387c703b 1575280078869 1575280178875
routingKey:delay.delay,convernType:null,deliveryTag:17,Msg body:[B@50cbc42f 1575280078870 1575280178875
routingKey:delay.delay,convernType:null,deliveryTag:18,Msg body:[B@75412c2f 1575280078871 1575280178875

 

https://mp.weixin.qq.com/s/O1Co69Aoc-VPOCfMbfDF8A