I was taking a first step in implementing an existing ActiveMQ 5.x
plugin in the Artemis source and noticed that there is a gap in the
availability of extension points in Artemis (or plugins).
I opened ARTEMIS-898 for tracking, and thought it deserved a discussion.
This feels like a good target as a 2.x feature, since it would most
likely be API changing. It stands to reason the extension points in
Artemis would be very different than ActiveMQ 5.x, so I've laid it out
in terms of features and capabilities.
The big three:
1. Message header / property manipulation. Allows admins to set message
policies for things like JMSXUserId, Timestamps, Expiry, etc
2. Message body manipulation. (Clebert mentioned perhaps an extension of
Divert / Transformers?)
3. Activity tracing for audit tracing and/or triggering other activity
(extension point at PostOffice and ActiveMQServer ?)
One side benefit might be that Advisory support becomes a plugin vs an
ingrained feature. Could be handy to have all the advisory logic in one
place to allow more customization of behavior.
Thoughts?
-Matt Pavlovich
