package com.kidgrow.rabbitmq.recieve;

import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

/**
 * 石家庄喜高科技有限责任公司 版权所有 © Copyright 2020<br>
 *
 * @Description: <br>
 * @Project: <br>
 * @CreateDate: Created in 2020/3/23 18:49 <br>
 * @Author: <a href="4345453@kidgrow.com">liuke</a>
 */
@Component
@RabbitListener(queues = "test_queue")
public class TopicReceive {
    @RabbitHandler
    public void process(String messages, Message message, Channel channel) {
        //  如果手动ACK,消息会被监听消费,但是消息在队列中依旧存在,如果 未配置 acknowledge-mode 默认是会在消费完毕后自动ACK掉
        final long deliveryTag = message.getMessageProperties().getDeliveryTag();
        try {
            System.out.println("Topic Receiver : " + messages);
            // 通知 MQ 消息已被成功消费,可以ACK了
            channel.basicAck(deliveryTag, false);
        }
        catch (Exception e) {
            try {
                // 处理失败,重新压入MQ
                channel.basicRecover();
            } catch (Exception e1) {
                e1.printStackTrace();
            }
        }
    }
}