com.mulesoft.connectors.ibmmq.internal.listener

Class MQJmsResourceReleaser

java.lang.Object

org.mule.jms.commons.internal.source.DefaultJmsResourceReleaser

com.mulesoft.connectors.ibmmq.internal.listener.MQJmsResourceReleaser

All Implemented Interfaces:

org.mule.jms.commons.internal.source.JmsResourceReleaser

public class MQJmsResourceReleaser
extends org.mule.jms.commons.internal.source.DefaultJmsResourceReleaser

JMS Connection cleaner due to SDK issue MULE-16609. Cleans an IBM's exceptionListener flag that prevents the listener from propagating new exceptions once it already has handled one. See EE-6673 for a detailed explanation.

Constructor Summary

Constructors

Constructor and Description
MQJmsResourceReleaser()

Method Summary

Modifier and Type	Method and Description
protected void	doCleanConnection(javax.jms.Connection connection) Cleans the connection as described in the class JavaDoc.
void	releaseConsumerMessageListener(org.mule.jms.commons.internal.source.push.MessageListenerContext info) The default implementation of the message listener cleanup sets the @MessageConsumer message listener to null, avoiding further message dispatches.

Methods inherited from class org.mule.jms.commons.internal.source.DefaultJmsResourceReleaser

releaseConnection

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MQJmsResourceReleaser

public MQJmsResourceReleaser()

Method Detail

releaseConsumerMessageListener

public void releaseConsumerMessageListener(org.mule.jms.commons.internal.source.push.MessageListenerContext info)

The default implementation of the message listener cleanup sets the @MessageConsumer message listener to null, avoiding further message dispatches. Since there's a known issue with the IBM MQ driver, regarding the setMessageListener operation and a concurrent failure in one of its dispatch threads, this can be "emulated" by switching our JmsMessageListener to a rejection state, in which all incoming messages are Un-Acknowledged.

Specified by:

releaseConsumerMessageListener in interface org.mule.jms.commons.internal.source.JmsResourceReleaser

Overrides:

releaseConsumerMessageListener in class org.mule.jms.commons.internal.source.DefaultJmsResourceReleaser

Parameters:

info - Information about the target listener to do the cleanup.

doCleanConnection

protected void doCleanConnection(javax.jms.Connection connection)

Cleans the connection as described in the class JavaDoc. If IBMMQConnectionProvider is configured with a caching strategy, this cleaner will fail not finding the 'commonConn' field. Regardless of that, since the actual connection object being cached by SDK is a proxy generated by Spring-JMS, the underlying connection will be re-created once the reconnection is handled by the org.springframework.jms.connection.SingleConnectionFactory exception listener.

Overrides:

doCleanConnection in class org.mule.jms.commons.internal.source.DefaultJmsResourceReleaser

Parameters:

connection - the connection to be cleaned