本地主机上RabbitMQ连接突然关闭

Question

本地主机上RabbitMQ连接突然关闭

3

我们在本地的开发/测试场景中遇到了与RabbitMQ突然断开连接的问题。在我们的开发环境中，每个开发人员的Windows 7机器上都安装了RabbitMQ，并通过Spring AMQP库使用Java客户端进行连接。一切正常工作了一段时间，但在某个时间点连接会断开，RabbitMQ日志中会出现以下消息：

=WARNING REPORT==== 4-Jan-2016::14:39:37 ===
closing AMQP connection <0.3731.0> (127.0.0.1:50792 -> 127.0.0.1:5672):
connection_closed_abruptly

在客户端日志中出现了以下异常：

04/01/2016 14:39:37.181 (AMQP Connection 127.0.0.1:5672) ERROR [CachingConnectionFactory] Channel shutdown: connection error
04/01/2016 14:39:38.188 (SimpleAsyncTaskExecutor-2) WARN  [SimpleMessageListenerContainer] Consumer raised exception, processing can restart if the connection factory supports it
com.rabbitmq.client.ShutdownSignalException: connection error
    at com.rabbitmq.client.impl.AMQConnection.startShutdown(AMQConnection.java:723)
    at com.rabbitmq.client.impl.AMQConnection.shutdown(AMQConnection.java:713)
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:571)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.SocketException: Unrecognized Windows Sockets error: 0: recv failed
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:152)
    at java.net.SocketInputStream.read(SocketInputStream.java:122)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:288)
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95)
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139)
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:536)
    ... 1 more

在客户端启动时，我们创建了一个动态队列并将多个消费者附加到它上面。当连接断开时，队列将被删除，任何后续尝试重新创建它都会失败，并出现以下异常：

04/01/2016 14:39:38.239 (SimpleAsyncTaskExecutor-8) WARN  [BlockingQueueConsumer] Queue declaration failed; retries left=3
org.springframework.amqp.rabbit.listener.BlockingQueueConsumer$DeclarationException: Failed to declare queue(s):[MY_TEST_QU]
    at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPassiveDeclarations(BlockingQueueConsumer.java:571)
    at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:470)
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1165)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException
    at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106)
    at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102)
    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124)
    at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:885)
    at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:61)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:704)
    at com.sun.proxy.$Proxy77.queueDeclarePassive(Unknown Source)
    at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPassiveDeclarations(BlockingQueueConsumer.java:550)
    ... 3 more
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no queue 'MY_TEST_QU' in vhost '/', class-id=50, method-id=10)
    at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67)
    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33)
    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:361)
    at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:226)
    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118)
    ... 12 more
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no queue 'MY_TEST_QU' in vhost '/', class-id=50, method-id=10)
    at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:484)
    at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:321)
    at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:144)
    at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:91)
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:554)
    ... 1 more

我们在rabbitmq 3.4.x和3.5.x以及Spring AMQP 1.3.x和1.5.x中遇到了这个问题。有趣的是，在安装了独立服务器的QA和生产环境中从未发生过这种情况。

非常感谢您的帮助。

- user3739116

1个回答

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- Artem Bilan · Accepted Answer

org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPassiveDeclarations() 在不再有队列监听时会失败。

这不是队列的重新创建，而只是 PassiveDeclarations。因此，如果您手动删除了“动态队列”，则还需要手动重新创建它。

我的意思是，如果您不遵循 RabbitAdmin Bean 的约定，除非手动重新创建，否则没有选择。在这种情况下，您无需担心监听器：当队列回来时，它将正确地重新连接。

更新

从版本 1.5 开始，Spring AMQP 提供了 ListenerContainerConsumerFailedEvent，该事件恰好在所有 attemptPassiveDeclarations() 尝试之后发出。因此，您可以捕获该 ApplicationEvent，stop() 您的监听容器，重新声明 queue 并再次启动容器。

如果您的队列不是 Bean，则不会自动重新声明。