Oleg,
Feel free to raise a JIRA with your proposal so we can discuss it on the
dev list. If you want to implement this, just ask for any help you need
while doing so. You can attach the patches for these improvements to
the JIRA issue (don't forget to grant the ASF license when you do this)
and we'll review and commit those for you.
Thank you,
Gert
Oleg Atamanenko wrote:
The custom priority strategy will solve issue 884, the first solution
(property support) will solve issue 259.
We can discuss, how this solution will interact with each other and
implement it.
I *really* need this support in servicemix in our project and I would glad
to help ServiceMix team to implement it.
Best regards,
Oleg Atamanenko.
2008/8/7 Oleg Atamanenko <[EMAIL PROTECTED]>
Gert,
I've investigated the code and found class
org.apache.servicemix.jbi.nmr.flow.jms.AbstractJMSFlow.
In this class method doRouting(MessageExchangeImpl me) performs JMS
routing.
The code is like this:
try {
Queue queue = inboundSession.createQueue(destination);
ObjectMessage msg = inboundSession.createObjectMessage(me);
MessageProducer queueProducer =
inboundSession.createProducer(queue);
queueProducer.send(msg);
} finally {
inboundSession.close();
}
Is it ok, if I get some property from Exchange (e.g.
me.getProperty("JMSPriority")) and set to msg JMS Priority here, before
sending?
Will it have any side effects?
Also, I think I would implement some complex mechanism of priorities (i.e
the older message, the higher priority it has).
If ok, I can implement it as interface MessagePriorityStrategy, and set it
as property of AbstractJMSFlow to have ability to use different
implementations if, needed.
What do you think?
Best regards,
Oleg Atamanenko.
2008/8/7 Gert Vanthienen <[EMAIL PROTECTED]>
Oleg,
There's no support for message priorities in the default flows inside
ServiceMix. We still have a few open issues for priority handling (SM-259,
SM-884, ...). I'm not sure if this makes much sense for ST and SEDA flows,
but we could leverage the JMS message priority for the JMS Flow and JCA
Flow. If you implement message priority handling there, it will be
available for every exchange going through those flows.
However, the new JMS endpoints do support message priority for message
exchanges. If you look at
http://servicemix.apache.org/servicemix-jms-new-endpoints.html, you'll
notice that you can set the message priority on the message properties
before you send it to the endpoint. Adding a JMS consumer/producer pair to
your route will allow you to determine the need for message priorities on a
per-route basis.
Gert
Oleg Atamanenko wrote:
Hello everybody.
Is there any support for message priorities in service mix?
If yes, how can I use it?
If no, is it possible to implement it (and how) ?
Best regards,
Oleg Atamanenko.
