Question

我正在使用RabbitMQ。消费者API使用的是spring-cloud-steam。当前，由于maxAttempts为3，如果使用者无法处理该消息，则它将再次排队。这将发生3次。如果第3次消息也失败，则将其发送到DLX-> DLQ。

如下图所示

现在，如果侦听器端发生某些specificException，我想跳过重试。如何跳过此重试并将消息直接发送到DLX-> DLQ以获取specificException？

下面是配置文件。

spring:
  application:
    name: consumer-api
  cloud:
    stream:
      overrideCloudConnectors: true
      bindings:
        test_channel:
          destination: destinationName
          contentType: application/json
          group: groupName
          consumer:
            maxAttempts: 3
      rabbit:
        bindings:
          test_channel:
            consumer:
              durableSubscription: true
              exchangeType: direct
              bindingRoutingKey: do.test
              autoBindDlq: true
              deadLetterExchange: destinationName.dlx
              deadLetterQueueName: destinationName.dlx.groupName.dlq
              deadLetterRoutingKey: do.test

下面是侦听器代码。

@Slf4j
@Component
public class groupNameListener {

    @StreamListener(TEST_CHANNEL)
    public void doTest(Message<DoTestMessage> doTestMessage) {
        log.info("doTest message received: {}", doTestMessage);

        try {
            if ("someCondition".equals(doTestMessage.getPayload().getMessage())) {
                throw new SpecificException();
            } else {
                log.info("do normal work");
                throw new Exception(); //if something fails
            }
        } catch (SpecificException specificException) {
            log.error("Don't requeue but send to DLQ.... how  ????");
        } catch (Exception ex) {
            log.error("Error in processing do test message");
            throw new AmqpRejectAndDontRequeueException("Reject and Don't requeue exception");
            //this will requeue the message maximum 3 times. If maxAttempts has reached then will be send to DLX->DLQ
        }
    }
}

有人可以帮我吗？如果我有任何错误，请告诉我。

Answer 1

即将发布的2.1版本adds the feature to specify which exceptions are, or are not, retryable。

2.1.0.M3（里程碑）现在可用。

不可重试的异常将直接进入DLQ。

如何忽略maxAttempts并将消息发送到DLQ？

1 个答案: