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Date: Fri, 8 Jul 2011 20:01:17 +0000 (UTC)
From: "Timothy Bish (JIRA)" <jira+amqnet@apache.org>
To: dev@activemq.apache.org
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Subject: [jira] [Commented] (AMQNET-335) MessageConsumer does not Rollback
 on Exception
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    [ https://issues.apache.org/jira/browse/AMQNET-335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13062144#comment-13062144 ] 

Timothy Bish commented on AMQNET-335:
-------------------------------------

In order to fully support this the openwire protocol needs to be updated to v8 and a bunch of other work needs to be done on the consumer code to handle all the various scenarios of rollback and failover etc.  Probably not a good idea to put into a 1.5.2 release.

> MessageConsumer does not Rollback on Exception
> ----------------------------------------------
>
>                 Key: AMQNET-335
>                 URL: https://issues.apache.org/jira/browse/AMQNET-335
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: ActiveMQ
>            Reporter: Rasitha Wijesinghe
>            Assignee: Jim Gomes
>            Priority: Minor
>
> For modes of AutoAcknowledgeEach, AutoAcknowledgeBatch & IndividualAcknowledge, Dispatch method is missing a call to Rollback() when listener throws an exception.
> Java version is doing this correctly but the .net version does not have that call.
> http://activemq.2283324.n4.nabble.com/Apache-NMS-ActiveMQ-MessageConsumer-bug-td3566206.html
> Because of this, messages don't get properly nacked nor will they get into a DLQ correctly.
> Java Code:
> {code:java}
> } catch (RuntimeException e) {
> 	LOG.error(getConsumerId() + " Exception while processing message: " + md.getMessage().getMessageId(), e);
> 	if (isAutoAcknowledgeBatch() || isAutoAcknowledgeEach() || session.isIndividualAcknowledge()) {
> 	    // schedual redelivery and possible dlq processing
> 	    md.setRollbackCause(e);
> 	    rollback();
> 	} else {
> 	    // Transacted or Client ack: Deliver the
> 	    // next message.
> 	    afterMessageIsConsumed(md, false);
> 	}
>     }
> {code}
> .Net version:
> {code}
> catch(Exception e)
> {
> 	if(IsAutoAcknowledgeBatch || IsAutoAcknowledgeEach || IsIndividualAcknowledge)
> 	{
> 		// Redeliver the message
> 	}
> 	else
> 	{
> 		// Transacted or Client ack: Deliver the next message.
> 		this.AfterMessageIsConsumed(dispatch, false);
> 	}
> 	Tracer.Error(this.info.ConsumerId + " Exception while processing message: " + e);
> 	// If aborted we stop the abort here and let normal processing resume.
> 	// This allows the session to shutdown normally and ack all messages
> 	// that have outstanding acks in this consumer.
> 	if( (Thread.CurrentThread.ThreadState & ThreadState.AbortRequested) == ThreadState.AbortRequested)
> 	{
> 		Thread.ResetAbort();
> 	}
> }
> {code}
> Think the solution is to call Rollback().
> {code}
> catch(Exception e)
> {
> 	if(IsAutoAcknowledgeBatch || IsAutoAcknowledgeEach || IsIndividualAcknowledge)
> 	{
> 	    // Redeliver the message
> 	    Rollback(); // this takes care of checking the RedeliveryCounter and nacking when necessary
> 	}
> 	else
> 	{
> 		// Transacted or Client ack: Deliver the next message.
> 		this.AfterMessageIsConsumed(dispatch, false);
> 	}
> 	Tracer.Error(this.info.ConsumerId + " Exception while processing message: " + e);
> 	// If aborted we stop the abort here and let normal processing resume.
> 	// This allows the session to shutdown normally and ack all messages
> 	// that have outstanding acks in this consumer.
> 	if( (Thread.CurrentThread.ThreadState & ThreadState.AbortRequested) == ThreadState.AbortRequested)
> 	{
> 		Thread.ResetAbort();
> 	}
> }
> {code}

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