com.emily.infrastructure.rabbitmq.example.amqp.ttl.config.RabbitConfig Maven / Gradle / Ivy
package com.emily.infrastructure.rabbitmq.example.amqp.ttl.config;
import org.springframework.amqp.core.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.HashMap;
import java.util.Map;
/**
* RabbitMQ生产者交换器、绑定、队列声明
*
* @since 1.0
*/
@SuppressWarnings("all")
@Configuration
public class RabbitConfig {
public static final String TTL_TOPIC_EXCHANGE = "ttl.topic.exchange";
public static final String TTL_TOPIC_QUEUE = "ttl_topic_queue";
public static final String TTL_TOPIC_ROUTING_KEY = "*.topic.*";
public static final String TTL_DELAY_EXCHANGE = "ttl.dlx.exchange";
public static final String TTL_DELAY_ROUTING_KEY = "ttl.dlrk.routingkey";
public static final String TTL_DELAY_QUEUE = "ttl_dlk_queue";
/**
* 声明队列
*
* @return Queue对象
*/
@Bean
public Queue topicQueue() {
Map args = new HashMap<>();
/**
* 设置消息发送到队列之后多久被丢弃，单位：毫秒
*/
args.put("x-message-ttl", 10000);
/**
* 消息变成死信一般由以下几种情况引起：
* 1.消息被拒绝，并且设置requeue参数为false
* 2.消息过期
* 3.队列达到最大长度
* x-dead-letter-exchange参数是指消息编程死信之后重新发送的DLX
*/
args.put("x-dead-letter-exchange", TTL_DELAY_EXCHANGE);
/**
* 为DLX指定路由键DLK
*/
args.put("x-dead-letter-routing-key", TTL_DELAY_ROUTING_KEY);
/**
* 定义优先级队列，消息最大优先级为15，优先级范围为0-15，数字越大优先级越高
*/
args.put("x-max-priority", 15);
/**
* 设置持久化队列
*/
return QueueBuilder.durable(TTL_TOPIC_QUEUE).withArguments(args).build();
}
/**
* 声明Topic类型交换器
*
* @return TopicExchange对象
*/
@Bean
public TopicExchange topicExchange() {
TopicExchange exchange = new TopicExchange(TTL_TOPIC_EXCHANGE);
return exchange;
}
/**
* Topic交换器和队列通过bindingKey绑定
*
* @return Binding对象
*/
@Bean
public Binding bindingTopicExchangeQueue() {
return BindingBuilder.bind(topicQueue()).to(topicExchange()).with(TTL_TOPIC_ROUTING_KEY);
}
//============================延迟队列及交换器定义=================================
/**
* 定义延迟队列
*
* @return Queue对象
*/
@Bean
public Queue ttlQueue() {
return QueueBuilder.durable(TTL_DELAY_QUEUE).build();
}
/**
* 定义延迟交换器
*
* @return TopicExchange对象
*/
@Bean
public TopicExchange ttlExchange() {
TopicExchange exchange = new TopicExchange(TTL_DELAY_EXCHANGE);
return exchange;
}
/**
* 延迟队列交换器绑定
*
* @return Binding对象
*/
@Bean
public Binding bindingTtlDirectExchangeQueue() {
return BindingBuilder.bind(ttlQueue()).to(ttlExchange()).with(TTL_DELAY_ROUTING_KEY);
}
}