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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-9984) RabbitConsumer.stop() doesn't stop underlying AutorecoveringConnection obtained from supplied ConnectionFactory
Date Thu, 26 May 2016 17:11:13 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-9984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302472#comment-15302472
] 

ASF GitHub Bot commented on CAMEL-9984:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/camel/pull/996


> RabbitConsumer.stop() doesn't stop underlying AutorecoveringConnection obtained from
supplied ConnectionFactory
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-9984
>                 URL: https://issues.apache.org/jira/browse/CAMEL-9984
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-rabbitmq
>    Affects Versions: 2.17.1
>            Reporter: Darrell King
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 2.17.2, 2.18.0
>
>
> If I have a ConnectionFactory defined as:
> {code:borderStyle=solid}
> ConnectionFactory connectionFactory = new ConnectionFactory();
> connectionFactory.setAutomaticRecoveryEnabled(true);
> connectionFactory.setUsername(username);
> connectionFactory.setPassword(password);
> {code}
> And a Camel route defined like:
> {code:borderStyle=solid}
> rabbitmq://localhost:5672/MyExchange?connectionFactory=#connectionFactory&exchangeType=direct&queue=MyQueue&routingKey=MyRoutingKey
> {code}
> Performing these steps:
> * Start my application and it connects to Rabbit and consumes messages
> * Shutdown the RabbbitMQ server
> * Shutdown my Camel application
> The application doesn't stop fully because the automatic recovery mechanism has background
threads running. It carries on indefinately logging messages like:
> {code:borderStyle=solid}
> 	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.AMQConnection.start(AMQConnection.java:350)
> 	at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:37)
> 	at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.recoverConnection(AutorecoveringConnection.java:476)
> 	at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.beginAutomaticRecovery(AutorecoveringConnection.java:444)
> 	at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.access$000(AutorecoveringConnection.java:53)
> 	at com.rabbitmq.client.impl.recovery.AutorecoveringConnection$1.shutdownCompleted(AutorecoveringConnection.java:383)
> 	at com.rabbitmq.client.impl.ShutdownNotifierComponent.notifyListeners(ShutdownNotifierComponent.java:75)
> 	at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:578)
> {code}
> Looking at org.apache.camel.component.rabbitmq.RabbitConsumer.stop()
> {code:borderStyle=solid}
>     public void stop() throws IOException, TimeoutException {
>         stopping = true;
>         if (channel == null) {
>             return;
>         }
>         channel.basicCancel(tag);
>         try {
>             channel.close();
>         } catch (TimeoutException e) {
>             log.error("Timeout occured");
>             throw e;
>         }
>     }
> {code}
> The calls to channel.basicCancel(tag) and channel.close() both throw com.rabbitmq.client.AlreadyClosedException
when the server has closed the connection which stops the automatic recovery thread from being
halted. Checking whether the channel is open before the calls to channel.basicCancel(tag)
and channel.close() seems to fix the issue.
> {code:borderStyle=solid}
>     public void stop() throws IOException, TimeoutException {
>         stopping = true;
>         if (channel == null) {
>             return;
>         }
>         if (tag != null && isChannelOpen()) {
>             channel.basicCancel(tag);
>         }
>         try {
>             if (isChannelOpen()) {
>                 channel.close();
>             }
>         } catch (TimeoutException e) {
>             log.error("Timeout occured");
>             throw e;
>         }
>     }
> {code}
> I'll submit a PR later



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