[occi-wg] Translating foreign resources

[Ralf Nyren]

Not sure if I understood the issue correctly but I may be able to shed
some light on the contract implied by a Mixin.

The IPNetworkInterface mixin, defined in the
http://schemas.ogf.org/occi/infrastructure/networkinterface# scheme, only
guarantees that a resource instance associated with it will support a
certain set of attributes. In this case occi.networkinterface.address,
occi.networkinterface.gateway and occi.networkinterface.allocation. Infra
also says it should be a L3/L4 network but other than that there is not
much else in the contract.

The only thing OCCI can guarantee when translating resources between
providers is the availability of the attributes defined by the associated
Kind and Mixins.

/Ralf

On Thu, 07 Apr 2011 16:51:05 -0600, Gary Mazz <garymazzaferro at gmail.com>
wrote:
> Hi,
> 
> An issue came up of translating foreign resources between providers.. 
> There are two (3) use cases:
> 
> 1) we have a provider that has a unique network, defined as a 
> IPNetworkingMixin. Another provider doesn't support that Resource..
> 
> 2) We have 2 providers, each provider has a unique network, defined as a

> IPNetworkingMixin. The operation of the networks is different between 
> providers, their name spaces overlap.
> 
> 3) We have a provider and they would like to transcribe the 
> IPNetworkingMixin, but the resource class is know to be in an 
> overlapping name space.
> 
> We have 4 questions:
> 
> Q1) How do we identify the name space of the originating Mixin
> A1) The name space is provided by the scheme associated with the
resource
> 
> Q2) There is not enough information in the scheme to translate the 
> resource..
> A2) No clear practice
> 
> Q3) If we translate another providers Mixin, what do we export, the 
> original mixin definition, our translated mapping or both ?
> A3) No clear practice
> 
> Q4) If we export both our resource and the original mixin, how do we 
> link them together?
> A4) No clear pratice
> 
> Suggestions:
> 
> Q2: We need some hints? Maybe a pointer to a super class ie derived 
> class "IPNetworkingMixin", super class "Neworking".
> 
> Looking for some suggestions
> 
> 
> cheers,
> gary
> 
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