JMS Request Reply DMLC shutdown

[Maurice <ma...@betzel.net>]

Dear Community,

camel seems to not shutdown the spring DMLC in a JMS Request Reply with
Camel Proxy scenario using:
Karaf 2.3.4
Spring 3.2.8
ActiveMQ 5.9.0
Setup like in tutorial http://camel.apache.org/tutorial-jmsremoting.html

Starting a bundle with temp queues is no problem and works like it should,
but on connection Failure or Bundle stop i get following ERROR in the Karaf
log:


This keeps on repeating. Camel uses a TemporaryQueueReplyManager for JMS
request reply, which on Stop does not get cleared in unInitReplyManager() of
JmsProducer. Replymanager is always null.

JMS bean setup:



How do i shutdown the leaking DMLC trying to connect a Temp queue that is
already deleted by ActiveMQ?





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Re: JMS Request Reply DMLC shutdown

[Maurice <ma...@betzel.net>]

As a quick and dirty solution one can do this on bundle shutdown:

JmsEndpoint jmsEndpoint = camelContext.getEndpoint("amq:queue:Endpoint",
JmsEndpoint.class);
jmsEndpoint.onListenerContainerStopped(null);

This will decrement the runningMessageListeners (which should always be on
for temp queues because a singlethreadexecuter is used) to zero allowing
stop() to propagate to ServiceSupport.



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Re: JMS Request Reply DMLC shutdown

[Maurice <ma...@betzel.net>]

There seems to be a cyclic bug in Camel regarding the shutdown of temporary
queues.
When stop() is called on the request reply JmsEndpoint the
runningMessageListeners.get() count returns 1 preventing to call stop on
ServiceSupport. Then inside the DMLC in refreshConnectionUntilSuccessful()
isRunning() gets called resulting in a JmsEndpoint isRunning() returning
true from ServiceSupport.
Is there a way to get out of this shutdown loop?



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