Open Stack

On Thu, Jul 10 2014, Eoghan Glynn wrote:

Hi Eoghan,

> So the purpose of this thread is simply to get a read on the appetite
> in the community for such an effort. At the least it would require:
>
>  * trashing out the details in say a cross-project-track session at
>    the K* summit
>
>  * buy-in from the producer-side projects (nova, glance, cinder etc.)
>    in terms of stepping up to make the changes
>
>  * acquiescence from non-integrated projects that currently consume
>    these notifications
>
>    (we shouldn't, as good citizens, simply pull the rug out from under
>    projects such as StackTach without discussion upfront)
>
>  * dunno if the TC would need to give their imprimatur to such an
>    approach, or whether we could simply self-organize and get it done
>    without the need for governance resolutions etc.
>
> Any opinions on how desirable or necessary this is, and how the
> detailed mechanics might work, would be welcome.

Glad to see this coming up again. I've been pushing that since the
Icehouse summit in Hong-Kong, where we had a Oslo session about that
subject and where everybody nod about my initial plan. :)

I've created a blueprint and started a very primitive implementation
back then:
  https://blueprints.launchpad.net/oslo.messaging/+spec/notification-structured

but had to stop by lacking time to push that effort further.

My initial plan was to leverage a library like voluptuous to do schema
based validation on the sender side. That would allow for receiver to
introspect schema and know the data structure to expect. I didn't think
deeply on how to handle versioning, but that should be doable too.

To summarize, I got the feeling that there's more a need of resources to
work on that than any problem. Same old, same old.

Cheers,
-- 
Julien Danjou
/* Free Software hacker
   http://julien.danjou.info */
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