Question

我尝试使用spring boot连接到RabbitMQ。连接应始终重新启动/重试连接。在致命异常后重新连接时出现问题。应用程序永远不会丢失连接，也不会无限期地重试连接。

 @Bean
    public IntegrationFlow flow() {
        final SimpleMessageListenerContainer listenerContainer = new SimpleMessageListenerContainer(getConnectionFactory());
        listenerContainer.setQueues(getQueue());
        listenerContainer.setDeclarationRetries(Integer.MAX_VALUE);
        final AmqpInboundChannelAdapterSpec adapter = (AmqpInboundChannelAdapterSpec) Amqp.inboundAdapter(listenerContainer);
        return IntegrationFlows
                .from(adapter)
                .filter(filter)
                .transform(transformer)
                .handle(processor)
                .get();
    }

我可能会收到一个fatal异常，我在ApplicationListener<ListenerContainerConsumerFailedEvent>中收到了这个异常。这个异常并不总是一样，最后一次是'PossibleAuthenticationFailureException'

如果异常是致命的，我会停止然后启动容器。我意识到这可能是错误的地方，因为看起来容器在调用事件后停止了。

@Override
public void onApplicationEvent(ListenerContainerConsumerFailedEvent event) {
    if (event.isFatal()) {
      SimpleMessageListenerContainer simpleMessageListenerContainer = (SimpleMessageListenerContainer) event.getSource()
      simpleMessageListenerContainer.stop();
      simpleMessageListenerContainer.start();
      LOG.info("started container");
    }
}

导致以下输出并且与兔子没有连接。（在以下输出之后没有任何内容，它只是没有连接任何东西）

[rContainer＃0-34] startConnectionOnFatalConnectionListener：已启动容器。

[rContainer＃0-34] o.s.a.r.l.SimpleMessageListenerContainer：从已中止的消费者处停止容器

版本：

RabbitMQ 3.6.8，Erlang 19.2
Spring Integration（spring-integration-amqp）：4.3.9

我能够获得更多日志条目，在调用ListenerContainerConsumerFailedEvent之前记录以下行：

07:05.843 ERROR o.s.a.r.c.CachingConnectionFactory       : Channel shutdown: connection error; protocol method: #method<connection.close>(reply-code=541, reply-text=INTERNAL_ERROR, class-id=0, method-id=0)
07:05.843 ERROR o.s.a.r.c.CachingConnectionFactory       : Channel shutdown: connection error; protocol method: #method<connection.close>(reply-code=541, reply-text=INTERNAL_ERROR, class-id=0, method-id=0)
07:15.087 ERROR o.s.a.r.l.SimpleMessageListenerContainer : Consumer received fatal exception on startup

org.springframework.amqp.rabbit.listener.exception.FatalListenerStartupException: Authentication failure
    at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:476) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1280) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_92]
Caused by: org.springframework.amqp.AmqpAuthenticationException: com.rabbitmq.client.PossibleAuthenticationFailureException: Possibly caused by authentication failure
    at org.springframework.amqp.rabbit.support.RabbitExceptionTranslator.convertRabbitAccessException(RabbitExceptionTranslator.java:65) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:309) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.connection.CachingConnectionFactory.createConnection(CachingConnectionFactory.java:547) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils$1.createConnection(ConnectionFactoryUtils.java:90) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.doGetTransactionalResourceHolder(ConnectionFactoryUtils.java:140) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.getTransactionalResourceHolder(ConnectionFactoryUtils.java:76) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:472) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    ... 2 common frames omitted
Caused by: com.rabbitmq.client.PossibleAuthenticationFailureException: Possibly caused by authentication failure
    at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:342) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:813) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:767) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:887) ~[amqp-client-3.6.3.jar!/:na]
    at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:300) ~[spring-rabbit-1.6.1.RELEASE.jar!/:na]
    ... 7 common frames omitted
Caused by: com.rabbitmq.client.ShutdownSignalException: connection error
    at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:37) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:367) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:234) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.impl.AMQChannel.rpc(AMQChannel.java:212) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:327) ~[amqp-client-3.6.3.jar!/:na]
    ... 11 common frames omitted
Caused by: java.io.EOFException: null
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290) ~[na:1.8.0_92]
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139) ~[amqp-client-3.6.3.jar!/:na]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:542) ~[amqp-client-3.6.3.jar!/:na]
    ... 1 common frames omitted

解决方法：实施运行状况检查。运行状况检查检查是否存在与rabbitMQ的连接。如果运行状况检查未成功，则重新启动应用程序。（实现为cron，调用bash脚本.bash脚本停止并启动容器）。

Answer 1

根据文档，您可以尝试使用DefaultMessageListenerContainer

[...]在代理暂时不可用的情况下完全自我恢复，并允许停止/重新启动以及运行时更改其配置。

如何重新启动SimpleMessageListenerContainer

1 个答案: