[ https://issues.apache.org/activemq/browse/SM-494?page=all ]
Guillaume Nodet resolved SM-494.
--------------------------------
Fix Version/s: 3.1
Resolution: Fixed
Assignee: Guillaume Nodet
Author: gnodet
Date: Tue Sep 26 06:07:14 2006
New Revision: 450039
URL: http://svn.apache.org/viewvc?view=rev&rev=450039
Log:
SM-494: Problems with JMSFlow and sendSync in start() callbacks
Modified:
incubator/servicemix/trunk/servicemix-core/src/main/java/org/apache/servicemix/jbi/container/JBIContainer.java
> Problems with JMSFlow and sendSync in start() callbacks.
> --------------------------------------------------------
>
> Key: SM-494
> URL: https://issues.apache.org/activemq/browse/SM-494
> Project: ServiceMix
> Issue Type: Bug
> Components: servicemix-core
> Affects Versions: 3.0-M1
> Reporter: Michael Studman
> Assigned To: Guillaume Nodet
> Priority: Critical
> Fix For: 3.1
>
>
> I have two simple JBI components A & B; B sends (synchronously) a message to
> A in its start() method.
> When using ST or SEDA flow there are no problems - the flow completes.
> When I use JMS flow, however, B blocks when sending synchronously. I can see
> that A is started before B is started - it just seems A never gets the
> message.
> Reading the code it seems JMSFlow will route a requests even before it is
> started by creating a queue and placing a message on it. Because it hasn't
> been started, however, it won't have a queue listener in place to respond for
> that queue and so a sync message will just timeout without response.
> By simply switching the order of flow.start() and registry.start() in
> Broker.start() I was able to get the desired behaviour for my situation but I
> think this may actually introduce other bugs (e.g. JMS flow accepting remote
> messages when some or all components have not yet been started?).
> The behaviour I was expecting was that sending sync to a component already
> started should not block and sending sync to one not already started should
> fail. I think the flows and the registry need to work together a bit better.
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