If you are just looking to trash old messages then use the timeToLive setting
when producing messages on the DLQ.
https://camel.apache.org/components/4.10.x/eips/message-expiration.html
If you want a manually triggered process, then you can create a consumer
application that consumes X number of messages, where X is specified on startup.
--
Alex
-----Original Message-----
From: Ephemeris Lappis <ephemeris.lap...@gmail.com>
Sent: Tuesday, March 11, 2025 9:07 AM
To: us...@camel.apache.org; users@activemq.apache.org
Subject: [EXTERNAL SENDER:] Camel JMS consumer with dynamic selector to read
ActiveMQ DLQueues
Hello.
I'm looking for a simple way to clean DLQ queues on our ActiveMQ brokers.
Messages are moved to DLQ queues when some unexpected conditions lead consumers
to fail. We've no automatic processing for DLQ messages that are only needed
for diagnosis. Nevertheless, when the queues contain too many messages, the
ActiveMQ console or alternative browsing tools are not able to handle them,
and, by the way, thousands of messages are useless. This is why we're looking
for a periodic cleaning. For example, we could remove all messages that are
older than N days.
A JMS selector can be used to check the JMSTimestamp is before a given time.
But I can't find any way to write a route with a JMS 'from' statement that
could evaluate something like : JMSTimestamp < NOW() - INTERVAL '7 days'...
I imagine that more complex solutions could be considered, consuming all the
DLQ queues messages, and moving them to other queues with an expiration time,
setting a policy to delete expired messages. But this is not our first choice...
I've also searched for a way to force ActiveMQ to set an expiration time on all
DLQ messages, but It seems it's not possible.
Any ideas are welcome !
Thanks in advance.
Regards.
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