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[Justin Santa Barbara <justin@xxxxxxxxxxxx>]

Sounds great - when the patch comes in we can discuss whether this should be
an extension or whether scheduled snapshots / generic tasks have broader
applicability across OpenStack (and thus would be better in the core API)

Is there a blueprint?



On Tue, Feb 15, 2011 at 11:32 AM, Troy Toman <troy.toman@xxxxxxxxxxxxx>wrote:

>
>  On Feb 15, 2011, at 1:06 PM, Justin Santa Barbara wrote:
>
>
>  OK - so it sounds like volumes are going to be in the core API (?) -
> good.  Let's get that into the API spec.  It also sounds like extensions
> (swift / glance?) are not going to be in the same API long-term.  So why do
> we have the extensions mechanism?
>
>  Until we have an implemented use case (i.e. a patch) that uses the
> extensions element, I don't see how we can spec it out or approve it.  So if
> you want it in v1.1, we better find a team that wants to use it and write
> code.  If there is such a patch, I stand corrected and let's get it reviewed
> and merged.
>
>  I would actually expect that the majority of the use cases that we want
> in the API but don't _want_ to go through core would be more simply
> addressed by well-known metadata (e.g. RAID-5, multi-continent replication,
> HPC, HIPAA).
>
>
>  I'm don't agree that the lack of a coded patch means we can't discuss an
> extension mechanism. But, if you want a specific use case, we have at least
> one we intend to deliver. It may be more of a one-off than a general case
> because it is required to give us a reasonable transition path from our
> current codebase to Nova. But, it is not an imagined need.
>
>  In the Rackspace Cloud Servers 1.0 API, we support a concept of backup
> schedules with a series of API calls to manage them. In drafting the
> OpenStack compute API, this was something that didn't feel generally
> applicable or useful in the core API. So, you don't see it as part of the
> CORE API spec. That said, for transition purposes, we will need a way to
> provide this capability to our customers when we move to Nova. Our current
> plan is to do this using the extension mechanism in the proposed API.
>
>  If there is a better way to handle this need, then let's discuss further.
> But, I didn't want the lack of a specific example to squash the idea of
> extensions.
>
>  Troy Toman
>
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