[AMQ-5450] mKahaDB filtered wildcard <filteredKahaDB queue="*.DLQ"> doesn't pick up myqueue.DLQ

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.10.0
• Fix Version/s: 5.11.0
• Component/s: Message Store
• Labels: messageStore mkahadb
• Assignee: Gary Tully
• Reporter: Gary Tully
• Created: 24/Nov/14 17:23
• Updated: 24/Nov/14 17:45
• Resolved: 24/Nov/14 17:45

Description

the activemq destination map does not support prefix matching on multiple paths but you can provide multiple wildcard matches via a composite destination today using a comma separated list.

In the main, "a.dlq" will match

"*.dlq"

, but a.b.dlq needs a

"*.*.dlq"

- so there needs to be a match to the number of expected paths to the number of wildcards. Having extra matches is not a problem.

A composite destination like

("*.DLQ,*.*.DLQ,*.*.*.DLQ")

will give match FOO.DLQ, FOO.BAR.DLQ and FOO.BAR.BAR.DLQ etc.

There is a problem with the match all destinations mapping, if there is no destination configured then an Any destination (with composite of Queue=">" and Topic=">" is used under the covers, it has a physical name of "0" which is > than the first character of *.DLQ" so it gets picked first in error.

A workaround is to add your own default mapping for queues and topics

<mKahaDB directory="${data}/kahadb" >
 <filteredPersistenceAdapters>
   <!-- match up to 3 paths that end in .DLQ -->
   <filteredKahaDB queue="*.*.*.DLQ,*.*.DLQ,*.DLQ">
    <persistenceAdapter>
      <kahaDB journalMaxFileLength="5kb"/>
    </persistenceAdapter>
  </filteredKahaDB>
  <!-- match all queues, specify a wildcard dest to avoid the Any under the covers -->
  <filteredKahaDB queue=">" >
    <persistenceAdapter>
      <kahaDB journalMaxFileLength="10kb"/>
    </persistenceAdapter>
  </filteredKahaDB>
  <!-- match all topics, specify a wildcard dest to avoid the Any under the covers -->
  <filteredKahaDB topic=">" >
    <persistenceAdapter>
      <kahaDB journalMaxFileLength="10kb"/>
    </persistenceAdapter>
  </filteredKahaDB>
 </filteredPersistenceAdapters>
</mKahaDB>

rather than use a filteredKahaDB and not specify a destination, with the default "all" behaviour