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RE: [grouper-dev] Action Items: Grouper Call 3-Sep-08

Chronological Thread 
  • From: Chris Hyzer <>
  • To: Tom Barton <>, caleb racey <>
  • Cc: Grouper Dev <>
  • Subject: RE: [grouper-dev] Action Items: Grouper Call 3-Sep-08
  • Date: Thu, 4 Sep 2008 13:43:11 -0400
  • Accept-language: en-US
  • Acceptlanguage: en-US

Not to derail the request for an example, but I would like to discuss the
architecture at some point as well...

Are we assuming that we still need a queue in the Grouper DB, then a daemon
to retrieve items from that and send to messaging? We would want messaging
reliable even if the ActiveMQ is down for a bit, right? And we would want it
to be transactional with the Grouper transaction (e.g. if the Grouper tx is
committed, we definitely want a message, and if not, we definitely don't.
Also we need to make sure the order of messages is consistent with the order
of operations against the Grouper DB which can happen based on disparate
systems (UI, GSH, WS, etc)

ActiveMQ does look like a nice product though...


> -----Original Message-----
> From: Tom Barton
> [mailto:]
> Sent: Thursday, September 04, 2008 1:29 PM
> To: caleb racey
> Cc: Grouper Dev
> Subject: Re: [grouper-dev] Action Items: Grouper Call 3-Sep-08
> Caleb,
> It would be great to get feedback from an effort to use hooks by those
> outside of the development team. It would also be great to have an
> actual example of sourcing group management events into a message-based
> system. Let us know if you need any help.
> Tom
> caleb racey wrote:
> >> [AI] {Kathryn} will do background research on a messaging system to
> >> be used as a test/example case for hooks.
> >
> > I have just been testing activeMQ JMS message queuing and have also
> been testing it with the STOMP protocol connector to provide access to
> JMS queues to other languages (php perl python ruby etc) with php
> message consumption and posting tested.
> >
> > More than happy to help with this effort and I can recommend activeMQ
> as a test platform, I had it setup and running in about 30 minutes and
> it has nice examples to learn from.
> >
> >
> >

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