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From James Green <james.mk.gr...@gmail.com>
Subject Re: Detect empty Queue programmatically
Date Thu, 16 Jun 2011 13:03:40 GMT
This sounds like a good idea but the wrong thing to be doing. After all, it
could well bog the broker down if the queue is constantly hitting zero
messages. Besides, how might it work in a peer networked environment? Sounds
like a complicated thing to document!

James

On 15 June 2011 18:56, Yuvaraj Vanarase <yuvaraj.vanarase@synechron.com>wrote:

> Thanks Jason,
>
> I am trying to know if there is way to create and register some listener to
> Broker so that Broker will callback some method on listener when queue
> becomes empty on broker. In this way, client doesn't have to poll queue to
> know if all messages are consumed.
> Well, I do also think it may not happening that Broker itself knows when
> queue becomes empty, then above requirement is nonsense. In this case is the
> polling/checking queue messages  remaining is the solution?
>
> Regards,
> Yuvaraj
>
> Yuvaraj Vanarase,
> Lead Technology - Software
> Phone: +91.20.40262000 Ext 2305|Mobile: +91.9850818870 |
> http://www.synechron.com
> SYNECHRON -
> - Top 10 Best IT Employers for 4 consecutive years (link).
> - Celebrating 10 Years!
>
>
> -----Original Message-----
> From: Jason Whaley [mailto:jasonwhaley@gmail.com]
> Sent: Wednesday, June 15, 2011 8:07 PM
> To: users@activemq.apache.org
> Subject: Re: Detect empty Queue programmatically
>
> I'm not sure if by saying "I do not want to poll the queue to see remaining
> messages" means you are ruling out polling JMX also, but you could very
> well
> monitor a Queue's QueueSize attribute via JMX and take action when it is 0.
>
>
> Here's a link to at least setting up JMX on the broker with some other
> details http://activemq.apache.org/jmx.html .
>
> On Tue, Jun 14, 2011 at 10:54 PM, Yuvaraj Vanarase <
> yuvaraj.vanarase@synechron.com> wrote:
>
> > Hi,
> >
> > I would like to fire some sql query when all messages are processed from
> > Queue ie. Queue becomes empty. I do not want to poll the queue to see
> > remaining messages. Is there any way by which activemq will deliever an
> > event to some listener? Like we have advisory message listener.
> >
> > Regards,
> > Yuvaraj
> >
> > Yuvaraj Vanarase,
> > Lead Technology - Software
> > Phone: +91.20.40262000 Ext 2305|Mobile: +91.9850818870 |
> > http://www.synechron.com
> > SYNECHRON -
> > - Top 10 Best IT Employers for 4 consecutive years (link<
> > http://www.synechron.com/news/news_best_employer_sep2010.htm>).
> > - Celebrating 10 Years!
> >
> >
>

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