Question

我有一个多活页夹弹簧云流应用程序，我的实现与Retry With the RabbitMQ Binder此处文档中解释的实现完全相似

我打算重试配置的时间，并最终放弃。

但是

如果错误类似于下面的错误，则我甚至都没有应用version: '2.3' services: redis: image: "redis" extra_hosts: - "dockerhost:172.20.0.1" networks: default: ipam: driver: default config: - subnet: 172.20.0.0/16 gateway: 172.20.0.1计数逻辑进入侦听器代码。所以问题是我如何放弃具有反序列化和消息转换错误的消息：

x-death

注意：我知道错误本身及其原因。故意测试2018-09-06 16:41:11.889 ERROR [data-connector,671345aea4270626,48dd1100d9e332f9,false] 8866 --- [rdedStarGroup-1] o.s.integration.handler.LoggingHandler : org.springframework.messaging.converter.MessageConversionException: Cannot convert from [[B] to [com.ducation.connector.event.domain.AwardResource] for GenericMessage [payload=byte[369], headers={amqp_deliveryTag=1, amqp_consumerQueue=outcome.awardedStar.dataConnectorAwardedStarGroup, amqp_redelivered=false, notificationType=AwardResource, spanTraceId=671345aea4270626, spanId=671345aea4270626, amqp_receivedRoutingKey=outcome.awardedStar.dataConnectorAwardedStarGroup, nativeHeaders={spanTraceId=[671345aea4270626], spanId=[671345aea4270626], spanSampled=[0]}, x-first-death-exchange=outcome.awardedStar, X-B3-SpanId=671345aea4270626, x-death=[{reason=expired, count=65, exchange=DLX, routing-keys=[outcome.awardedStar.dataConnectorAwardedStarGroup], time=Thu Sep 06 16:21:21 GST 2018, queue=outcome.awardedStar.dataConnectorAwardedStarGroup.dlq}, {reason=rejected, count=65, exchange=outcome.awardedStar, routing-keys=[#], time=Thu Sep 06 16:21:16 GST 2018, queue=outcome.awardedStar.dataConnectorAwardedStarGroup}], x-first-death-reason=rejected, X-B3-Sampled=0, x-first-death-queue=outcome.awardedStar.dataConnectorAwardedStarGroup, X-B3-TraceId=671345aea4270626, id=865fe31f-8cb4-fab1-ce1f-7673e741ac48, amqp_consumerTag=amq.ctag-Mz8gBRwIdx6czW6JCox2-w, spanSampled=0, contentType=application/plain, timestamp=1536237671843}], failedMessage=GenericMessage [payload=byte[369], headers={amqp_deliveryTag=1, amqp_consumerQueue=outcome.awardedStar.dataConnectorAwardedStarGroup, amqp_redelivered=false, notificationType=AwardResource, spanTraceId=671345aea4270626, spanId=671345aea4270626, amqp_receivedRoutingKey=outcome.awardedStar.dataConnectorAwardedStarGroup, nativeHeaders={spanTraceId=[671345aea4270626], spanId=[48dd1100d9e332f9], spanSampled=[0], X-B3-TraceId=[671345aea4270626], X-B3-SpanId=[48dd1100d9e332f9], X-B3-ParentSpanId=[671345aea4270626], spanParentSpanId=[671345aea4270626], X-B3-Sampled=[0]}, x-first-death-exchange=outcome.awardedStar, X-B3-SpanId=671345aea4270626, x-death=[{reason=expired, count=65, exchange=DLX, routing-keys=[outcome.awardedStar.dataConnectorAwardedStarGroup], time=Thu Sep 06 16:21:21 GST 2018, queue=outcome.awardedStar.dataConnectorAwardedStarGroup.dlq}, {reason=rejected, count=65, exchange=outcome.awardedStar, routing-keys=[#], time=Thu Sep 06 16:21:16 GST 2018, queue=outcome.awardedStar.dataConnectorAwardedStarGroup}], x-first-death-reason=rejected, X-B3-Sampled=0, x-first-death-queue=outcome.awardedStar.dataConnectorAwardedStarGroup, X-B3-TraceId=671345aea4270626, id=865fe31f-8cb4-fab1-ce1f-7673e741ac48, amqp_consumerTag=amq.ctag-Mz8gBRwIdx6czW6JCox2-w, spanSampled=0, contentType=application/plain, timestamp=1536237671843}] at org.springframework.messaging.handler.annotation.support.PayloadArgumentResolver.resolveArgument(PayloadArgumentResolver.java:144) at org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:116) at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:137) at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:109) at org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:55) at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109) at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:165) at org.springframework.cloud.stream.binding.DispatchingStreamListenerMessageHandler.handleRequestMessage(DispatchingStreamListenerMessageHandler.java:87) at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109) at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:158) at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:132) at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:105) at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:73) at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:445) at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:394) at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:181) at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:160) at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47) at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:108) at org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:203) at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter.access$600(AmqpInboundChannelAdapter.java:60) at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.createAndSend(AmqpInboundChannelAdapter.java:240) at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:207) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1414) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.actualInvokeListener(AbstractMessageListenerContainer.java:1337) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:1324) at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:1303) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:817) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:801) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$700(SimpleMessageListenerContainer.java:77) at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1042) at java.lang.Thread.run(Thread.java:748) 2018-09-06 16:41:11.900 WARN [data-connector,,,] 8866 --- [rdedStarGroup-1] s.a.r.l.ConditionalRejectingErrorHandler : Execution of Rabbit message listener failed. org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Listener threw exception at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.wrapToListenerExecutionFailedExceptionIfNeeded(AbstractMessageListenerContainer.java:1506) ~[spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1417) ~[spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.actualInvokeListener(AbstractMessageListenerContainer.java:1337) ~[spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:1324) ~[spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:1303) ~[spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:817) [spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:801) [spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$700(SimpleMessageListenerContainer.java:77) [spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1042) [spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_162] Caused by: org.springframework.messaging.converter.MessageConversionException: Cannot convert from [[B] to [com.ducation.connector.event.domain.AwardResource] for GenericMessage [payload=byte[369], headers={amqp_deliveryTag=1, amqp_consumerQueue=outcome.awardedStar.dataConnectorAwardedStarGroup, amqp_redelivered=false, notificationType=AwardResource, spanTraceId=671345aea4270626, spanId=671345aea4270626, amqp_receivedRoutingKey=outcome.awardedStar.dataConnectorAwardedStarGroup, nativeHeaders={spanTraceId=[671345aea4270626], spanId=[671345aea4270626], spanSampled=[0]}, x-first-death-exchange=outcome.awardedStar, X-B3-SpanId=671345aea4270626, x-death=[{reason=expired, count=65, exchange=DLX, routing-keys=[outcome.awardedStar.dataConnectorAwardedStarGroup], time=Thu Sep 06 16:21:21 GST 2018, queue=outcome.awardedStar.dataConnectorAwardedStarGroup.dlq}, {reason=rejected, count=65, exchange=outcome.awardedStar, routing-keys=[#], time=Thu Sep 06 16:21:16 GST 2018, queue=outcome.awardedStar.dataConnectorAwardedStarGroup}], x-first-death-reason=rejected, X-B3-Sampled=0, x-first-death-queue=outcome.awardedStar.dataConnectorAwardedStarGroup, X-B3-TraceId=671345aea4270626, id=865fe31f-8cb4-fab1-ce1f-7673e741ac48, amqp_consumerTag=amq.ctag-Mz8gBRwIdx6czW6JCox2-w, spanSampled=0, contentType=application/plain, timestamp=1536237671843}] at org.springframework.messaging.handler.annotation.support.PayloadArgumentResolver.resolveArgument(PayloadArgumentResolver.java:144) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:116) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:137) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:109) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:55) ~[spring-cloud-stream-2.0.1.RELEASE.jar:2.0.1.RELEASE] at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:165) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.cloud.stream.binding.DispatchingStreamListenerMessageHandler.handleRequestMessage(DispatchingStreamListenerMessageHandler.java:87) ~[spring-cloud-stream-2.0.1.RELEASE.jar:2.0.1.RELEASE] at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:158) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:132) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:105) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:73) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:445) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:394) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:181) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:160) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:108) ~[spring-messaging-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:203) ~[spring-integration-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter.access$600(AmqpInboundChannelAdapter.java:60) ~[spring-integration-amqp-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.createAndSend(AmqpInboundChannelAdapter.java:240) ~[spring-integration-amqp-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:207) ~[spring-integration-amqp-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1414) ~[spring-rabbit-2.0.4.RELEASE.jar:2.0.4.RELEASE] ... 8 common frames omitted逻辑。

如果无法实现我的期望，那么捕获此类异常以防止应用程序无限重试的最佳实践是什么？

Answer 1

在正常情况下，MessageConversionException被视为致命（不可恢复）并且永远不会重新排队，但是如果进行了配置，它们将进入DLQ。

有关此类例外的列表，请参见here。

但是，由于您将DLQ消息重新路由回原始队列，因此这克服了这些错误的“致命”性质。

我认为唯一可行的解决方法是使用republishToDlq，而不是将死信路由到原始队列，而是将死信过期到另一个队列，并在该队列上有另一个侦听器（原始数据，不进行转换）），并在邮件头中过滤掉带有此异常的邮件，同时将其他邮件转发到原始队列。

但是我将针对该框架提出一个问题。

https://jira.spring.io/browse/AMQP-833

编辑

这是一个使用两个DLQ方法丢弃无法恢复的消息的Spring Cloud Stream应用程序...

@SpringBootApplication
@EnableBinding(So52209397Application.Channels.class)
public class So52209397Application {

    public static void main(String[] args) {
        SpringApplication.run(So52209397Application.class, args);
    }

    @Bean
    public ApplicationRunner runner(RabbitTemplate template) {
        return args -> {
            template.convertAndSend("foo.group", "{\"bar\":\"baz\"}", m -> {
                m.getMessageProperties().setContentType("application/json");
                return m;
            }); // good
            template.convertAndSend("foo.group", "junk", m -> {
                m.getMessageProperties().setContentType("application/json");
                return m;
            });
        };
    }

    boolean first = true;

    @StreamListener("input")
    public void listen(Foo foo, @Header(value = "x-death", required = false) List<Map<?, ?>> xDeath) {
        System.out.println(foo);
        if (xDeath == null) {
            throw new RuntimeException("fail first time (with retries)");
        }
        System.out.println(xDeath);
    }

    @StreamListener("inputDlq")
    public void listen(byte[] failed, @Header(RepublishMessageRecoverer.X_EXCEPTION_STACKTRACE) LongString stackTrace) {
        System.out.println("StreamErrorHander: " + new String(failed));
        if (stackTrace.toString().contains("MessageConversionException")) { // should add other fatal errors here too
            System.out.println("Discarding message");
        }
        else {
            throw new RuntimeException("Good exception; sending back to original queue");
        }
    }

    public interface Channels {

        @Input
        public MessageChannel input();

        @Input
        public MessageChannel inputDlq();

    }

    public static class Foo {

        private String bar;

        public String getBar() {
            return this.bar;
        }

        public void setBar(String bar) {
            this.bar = bar;
        }

        @Override
        public String toString() {
            return "Foo [bar=" + this.bar + "]";
        }

    }

}

和

spring.cloud.stream.bindings.input.destination=foo
spring.cloud.stream.bindings.input.group=group

# dead letters go to the default DLX/rk - DLX/foo.group
spring.cloud.stream.rabbit.bindings.input.consumer.auto-bind-dlq=true
spring.cloud.stream.rabbit.bindings.input.consumer.dlq-ttl=5000
spring.cloud.stream.rabbit.bindings.input.consumer.republish-to-dlq=true


# Raw consumer for failures
spring.cloud.stream.bindings.inputDlq.destination=DLX
spring.cloud.stream.bindings.inputDlq.group=foo.group.dlq

# disable retry for dlq listener
spring.cloud.stream.bindings.inputDlq.consumer.max-attempts=1

# dead letters are sent to DLX/foo.group.dlq.dlq
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.exchange-type=direct
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.ttl=5000
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.queue-name-group-only=true
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.binding-routing-key=foo.group
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.auto-bind-dlq=true

# foo.group.dlq.dlq routes expiries back to main queue via default exchange (could also be foo)
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.dlq-dead-letter-exchange=
spring.cloud.stream.rabbit.bindings.inputDlq.consumer.dlq-dead-letter-routing-key=foo.group

spring.cloud.stream.rabbit.bindings.inputDlq.consumer.dlq-ttl=1

最重要的是，消费者的主要死信是{raw}侦听器消耗的.dlq的所有内容，这会给...dlq.dlq丢掉致命错误和“ good”失败的死信。这个具有较短的TTL，然后重新路由回主队列。

Foo [bar=baz]
Foo [bar=baz]
Foo [bar=baz]
...
StreamErrorHander: {"bar":"baz"}
...
StreamErrorHander: junk
Discarding message
Foo [bar=baz]
[{reason=expired, count=1, exchange=DLX, routing-keys=[foo.group.dlq]...

Spring Cloud Stream-覆盖错误处理程序

1 个答案: