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List:       activemq-dev
Subject:    [jira] Commented: (AMQ-723) Generate Advisory Messages to setup
From:       "Hiram Chirino (JIRA)" <jira () apache ! org>
Date:       2006-05-25 17:13:51
Message-ID: 13643132.1148577231823.JavaMail.jira () brutus
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    [ https://issues.apache.org/activemq/browse/AMQ-723?page=comments#action_36209 ] 

Hiram Chirino commented on AMQ-723:
-----------------------------------

I don't think the broker needs to generate an advisory message for a time out.  The \
timeout can be implemented in the client side API.

> Generate Advisory Messages to setup tear down producer based on consumer activity
> ---------------------------------------------------------------------------------
> 
> Key: AMQ-723
> URL: https://issues.apache.org/activemq/browse/AMQ-723
> Project: ActiveMQ
> Type: New Feature

> Components: Broker
> Versions: 4.0
> Reporter: Kyle Himmerick
> Fix For: 4.1

> 
> Original Estimate: 30 minutes
> Remaining: 30 minutes
> 
> Use Case is a custom producer is setup for each topic and should be shut down when \
> there are no subscribers left. With the getConsumerAdvisoryTopic I can receive \
> messages when a specific subscriber joins or leaves.  So I can figure out if a \
> consumer is the first, but it would be nice to receive a separate message here. \
> Currently there is nothing that generates advisory messages when there are no \
> subscribers left.  The getNoTopicConsumersAdvisoryTopic() only fires when a message \
> is sent to a topic with no consumers, like dead letter queue.  A separate advisory \
> message should be fired when the last subscriber leaves.  Ideally we could set a \
> delay for this advisory message, so it could fire if the ConsumerCount remained at \
> 0 for x msec/min.  This would prevent unnecessary tear down/setup of the producer.

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