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Posted to issues@activemq.apache.org by "Jean-Baptiste Onofré (Jira)" <ji...@apache.org> on 2021/12/16 12:43:00 UTC

[jira] [Commented] (AMQ-8437) Destination policy not applied when multiple policies with wildcard exist

    [ https://issues.apache.org/jira/browse/AMQ-8437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17460668#comment-17460668 ] 

Jean-Baptiste Onofré commented on AMQ-8437:
-------------------------------------------

Are you sure you want to target {{app/events/*}} ? Is it not more {{app/events/>}} ?

It's described here: https://activemq.apache.org/wildcards

> Destination policy not applied when multiple policies with wildcard exist
> -------------------------------------------------------------------------
>
>                 Key: AMQ-8437
>                 URL: https://issues.apache.org/jira/browse/AMQ-8437
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.16.0, 5.16.3
>         Environment: centos 7; activeMQ version 5.16.3
>            Reporter: Rohan Chauhan
>            Priority: Major
>
> I am setting up deadLetterPolicies for undelivered messages but the individualDeadLetterStrategy doesn't get applied if I use a wildcard. I was expecting creation of DLQ.app/events/foo to be created, for a queue named app/events/foo, and undelivered messages moved into it. Unfortunately the individual DLQ is not created and undelivered messages end up in default DLQ i.e. ActiveMQ.DLQ.
> {code:java}
> <destinationPolicy>
>     <policyMap>
>         <policyEntries>
>             <!-- Set the following policy on all queues using the '>' wildcard -->
>             <policyEntry queue=">">
>                 <!-- 
>                         Tell the dead letter strategy not to process expired messages
>                         so that they will just be discarded instead of being sent to
>                         the DLQ, next we add specific policies for each queue. 
>                         -->
>                 <deadLetterStrategy>
>                     <sharedDeadLetterStrategy processExpired="false" />
>                 </deadLetterStrategy>
>             </policyEntry>
>             <policyEntry queue="app/events/*">
>                 <deadLetterStrategy>
>                     <!--
>                             Use the prefix 'DLQ.' for the destination name, and make
>                             the DLQ a queue rather than a topic
>                             -->
>                     <individualDeadLetterStrategy queuePrefix="DLQ." useQueueForQueueMessages="true"/>
>                 </deadLetterStrategy>
>             </policyEntry>
>         </policyEntries>
>     </policyMap>
> </destinationPolicy>{code}
>  
> The individualDeadLetterStrategy works fine when I don't use wildcard.
> {code:java}
> <destinationPolicy>
>     <policyMap>
>         <policyEntries>
>             <!-- Set the following policy on all queues using the '>' wildcard -->
>             <policyEntry queue=">">
>                 <!-- 
>                         Tell the dead letter strategy not to process expired messages
>                         so that they will just be discarded instead of being sent to
>                         the DLQ, next we add specific policies for each queue. 
>                         -->
>                 <deadLetterStrategy>
>                     <sharedDeadLetterStrategy processExpired="false" />
>                 </deadLetterStrategy>
>             </policyEntry>
>             <policyEntry queue="app/events/foo">
>                 <deadLetterStrategy>
>                     <!--
>                             Use the prefix 'DLQ.' for the destination name, and make
>                             the DLQ a queue rather than a topic
>                             -->
>                     <individualDeadLetterStrategy queuePrefix="DLQ." useQueueForQueueMessages="true"/>
>                 </deadLetterStrategy>
>             </policyEntry>
>         </policyEntries>
>     </policyMap>
> </destinationPolicy> {code}
>  



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