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From Fred Crable <fredcra...@hotmail.com>
Subject RE: How to get a message redelivered in CMS c++
Date Wed, 17 Oct 2007 20:43:13 GMT

Okay, that is what I was afraid of :)  Its more like I can process all the
messages, it's just one device the message is designated for is busy.  I can
still process the other 100's of pending requests.   So, option #2 is not
viable becuase I still need to service the messages I can work on.  So I'm
thinking #1 is probably where I'd go and I'll either queue the internally &
not ack them or put them on another queue back to myself to check on later
via a synchronous poll.

Thank you for the repsonse.  On the 3rd question though, is there a way to
"Move" messages from one queue to another once I've dequeued via async
(onMessage)?


Mittler, Nathan wrote:
> 
> It sounds to me like the solution needs to be at the application-level.
> Here's a few ideas that come to mind:
> 
> 1) Asynchronous delivery: you could queue them up until you're system is
> ready to process them.
> 
> 2) Asynchronous delivery: When you are in a state to process messages,
> you could register the message listener, thus starting the flow of
> message events.  When you are no longer able to process messages, remove
> the message listener - this will cause messages to internally queue up
> until you're ready to process them again.
> 
> 3) You could do synchronous polling of the queue when you are in a state
> to handle the messages
> 
> Regards,
> Nate
> 
>> -----Original Message-----
>> From: Fred Crable [mailto:fredcrable@hotmail.com] 
>> Sent: Wednesday, October 17, 2007 10:47 AM
>> To: users@activemq.apache.org
>> Subject: How to get a message redelivered in CMS c++
>> 
>> 
>> Hi, I'm using activemq-cpp-2.1.  It is working great, thanks 
>> to all!  I have a system that consumes messages and does 
>> network provisoning against network devices which may be 
>> locked for a very long time.  I still need to perform the 
>> work in the message, but I need to do it later after the lock 
>> is cleared (usually because someone has requested to do work 
>> against the same device).
>> 
>> Questions are:
>> 
>> Is there a way to requeue the message for redelivery on the 
>> same queue?   I
>> see a rollback method and transactions, but they seem to be 
>> internal to the ActiveMQ library and not on the cms available side.
>> 
>> If so, can I queue it up for delivery later either by 
>> priority (pushing it down to lower priority) or by time (say 
>> 2 minutes later?)
>> 
>> If the answers to either of these are no, is the best 
>> alternative is to requeue it to myself on a "slowly polled" 
>> queue that I get to later?  Is there a slick way to just 
>> "move" messages if I have both a consumer & provider opened?
>> 
>> Thanks, Fred
>> --
>> View this message in context: 
>> http://www.nabble.com/How-to-get-a-message-redelivered-in-CMS-
>> c%2B%2B-tf4640926s2354.html#a13254835
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>> 
>> 
> 
> 

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View this message in context: http://www.nabble.com/How-to-get-a-message-redelivered-in-CMS-c%2B%2B-tf4640926s2354.html#a13262513
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