[occi-wg] Draft of OCCI 1.1 profile for VM templates/flavours

[Boris Parak]

Hello Philippe,

On Thu, Mar 19, 2015 at 1:00 AM, Philippe Merle <philippe.merle at inria.fr> wrote:
> Hello Boris,
>
> I have one comment on your OCCI Compute Resource Templates.
> This specification does not explicitly define in which category (Kind or
> Mixin) the attribute eu.egi.fedcloud.occi.compute.ephemeral is defined.
> It could be defined in each of the six mixins or as I did it could be
> defined in an ephemeral mixin inherited by the six mixins.
> I prefer the second solution, which factorizes common elements of the six
> mixins.

it might not be explicitly mentioned there, but we adopted the first
approach you mentioned. We had a few reasons for doing that:

1.) the whole point of that attribute is setting a default value
different for each of those six mixins ; therefore it would have to be
"included" in all of them anyway ... and in a separate additional
mixin if we adopted the second approach (6 vs. 7 mixins with that
attribute)

2.) we do not use OCCI for modeling purposes, features such as
attribute inheritance from related mixins are not implemented ; this
means that defining an attribute in one mixin and setting a default
value for that attribute in a different related mixin wouldn't work

3.) this is all about practical applications for OCCI Infrastructure ;
we made it as simple as possible

If that makes any sense to you ...

>
> A+
> Philippe

Cheers, Boris

>
> Le 17/03/15 13:21, Boris Parak a écrit :
>
> Hello everyone,
>
> I have here, for your consideration, one of the first "formal" outputs
> of EGI FedCloud's work with OCCI -- The OCCI Resource Template
> Profile. We would very much like to hear your opinions, comments
> and/or suggestions.
>
> After this (brief, hopefully) internal discussion phase, we would like
> to push for a public comment phase as soon as possible.
>
> Thank you!
>
> Cheers, Boris
> ---
> CESNET / EGI FedCloud
>
>
>
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