java spring rabbit - gracefully reject a message

馋奶兔 提交于 2019-12-22 10:18:11

问题


I have the following listener method:

@Override
public void onMessage(Message message, Channel channel) {
  try {
    // do something bad :)
  } catch (Exception e){
    try {
      long dt = null != message.getMessageProperties() 
          ? message.getMessageProperties().getDeliveryTag() 
          : 0;
      channel.basicReject(dt, true);
    } catch(IOException io) {
      logger.error("IO-COMMON", io);
    }
  }
}

The issue is basic reject doesn't work, I don't know why. How to reject it gracefully? I think that if I reject a message, it should be requeued and reside is sth like cache, before going to next worker. But in fact this message just seems to be lost.


回答1:


You need to set the acknowledgemode to MANUAL if you are doing your own acks. I am not sure why it's not working for you; DEBUG/TRACE logging might help.

You should consider letting the container handle the acks - use acknowledgemode=AUTO; the container will normally requeue the message for any exception thrown or ack it if the listener returns normally.

You can set defaultRequeueRejected to false (it is true by default) and the message will be discarded (or routed to a DLX/DLQ).

You can also throw an AmqpRejectAndDontRequeueException to override the default mechanism of requeuing failed messages.

If the ack mode is NONE - there are no acks and RabbitMQ automatically acks the message as soon as it's sent.



来源:https://stackoverflow.com/questions/36209605/java-spring-rabbit-gracefully-reject-a-message

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!