[openstack-dev] [Glance][All] Pecan migration strategies

Mark Washenberger mark.washenberger at markwash.net
Wed Jan 15 00:08:33 UTC 2014

On Fri, Jan 10, 2014 at 4:51 AM, Flavio Percoco <flavio at redhat.com> wrote:

> Greetings,
> More discussions around the adoption of Pecan.
> I'd like to know what is the feeling of other folks about migrating
> existing APIs to Pecan as opposed to waiting for a new API version as
> an excuse to migrate the API implementation to Pecan?
> We discussed this in one of the sessions at the summit, I'd like to
> get a final consensus on what the desired migration path is for the
> overall community.
> IIRC, Cinder has a working version of the API with Pecan but there's
> not a real motivation to release a new version of it that will use
> the new implementation. Am I right?
> Nova, instead, will start migrating some parts but not all of them and
> it'll happen as part of the API v3. AFAIU.
> Recently a new patch was proposed in glance[0] and it contains a base
> implementation for the existing API v2. I love that patch and the fact
> that Oleh Anufriiev is working on it. What worries me, is that the
> patch re-implements an existing API and I don't think we should just
> swap them.
> Yes, we have tests (unit and functional) and that should be enough to
> make sure the new implementation works as the old one - Should it?
> Should it? - but...
> This most likely has to be evaluated in a per-project basis. But:
>    - What are the thoughts of other folks on this matter?
> Cheers,
> FF
> [0] https://review.openstack.org/#/c/62911/
> --
> @flaper87
> Flavio Percoco
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