Hi all, I raised QPID-5619 to implement message auditing in C++ broker. As a new feature with more options of implementation and mainly configuration, I would like to discuss it first. Quoting the JIRA for discussion:
There is a reasonable request to have message enqueue/dequeue audited. It can help troubleshooting or monitoring situations when the broker is suspected from discarding a message that was sent to it but never received by a consumer. Implementation options as to be discussed in qpid users mailing list: 1) Key feature: a) where to store/send the information about new message enqueue/dequeue? - store it in a configurable log-file (per queue? per broker?) - problem with format of binary data there - amend/modify replicated queues for this purpose - though replicated queues are designed not to replicate messages that are dequeued before they have been replicated - generate QMF event to be sent to "qmf.default.topic/agent.ind.event.org_apache_qpid_broker.<queue_name>.audit.<enqueue|dequeue>" topic - note this would have to change qpid.subject to route the message properly - have dedicated audit exchange for this purpose (of topic type, I expect) - again, qpid.subject would have to be changed b) how to trigger message auditing: - via QueueObserver (thanks Gordon for idea) 2) Options of auditing: a) audit enqueue+dequeue events only? or also acquire, release, reject? b) it should be possible to track only one from enqueue | dequeue | acquire events, or all of them c) event/message should contain: - timestamp - original message (or just its header? or configurable?) - type of event (enqueue/dequeue/..) - identification of consumer acquiring/dequeueing the message (and also producer?) 3) Provisioning/managing auditing: a) have the possibility to turn on/off auditing per queue (via QMF) b) have some x-declare arguments for the auditing when declaring the queue? Thanks in advance for your feedback. Kind regards, Pavel --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
