[occi-wg] OCCI relations extension

[Sami Yangui]

Hi Jean and all,

I think we should look at how  TOSCA or AWS CloudFormation made ​​for the definition and management of links relationships between their resources.

For example, in TOSCA, the Service Template contains a Topology Template that describes the Relationships between all the Nodes of the application. It contains also, a Plan element that describes the operational management behavior for these Nodes. Relationships between Nodes are expressed using XML-based language provided by TOSCA. I have not yet looked to OpenTosca (an open source implem of TOSCA) but I think we can find concrete examples in there. 

CloudFormation uses also predefined templates principle to describe, among others, required links between the different needed Amazon resources before provisioning step. The templates are JSON-based.


I think that an OCCI relations extension must verify and aggregate all existing models/templates of Cloud resource links.


Sami. 


----- Mail original -----
De: "Jean Parpaillon" <jean.parpaillon at free.fr>
À: occi-wg at ogf.org
Cc: "Roberto Cascella" <roberto at dicosmo.org>, "Jean-Pierre Laisné" <jean-pierre.laisne at compatibleone.org>
Envoyé: Mardi 18 Mars 2014 11:31:01
Objet: [occi-wg] OCCI relations extension

Hi all,
I've just began a document to describe an OCCI extension for relations
betwenn resources[0].
This model is inspired from work on Mancoosi[1] and Aeolus[2] projects.
I've seen that platform extension describes some links between resources
but, IMHO, these links should not be specific to a particular extension.
For instance, an application could depend on specific compute memory
amount but also a software application. 

This is reason why I'm proposing to describe these relations in a
generic way.
That way, for instance, a Manifest (as defined by CompatibleOne) could
be simply described with a simple resource of "Manifest" kind with a
list of links from the relation extension.

Any comment welcome !

Jean

[0]
https://docs.google.com/document/d/11nb7y0JEP6CKnTRjrU-LAkXW-NOQmhIbOKkCM4RMN5M/edit?usp=sharing 
[1] http://www.mancoosi.org/cudf/
[2] http://www.aeolus-project.org/ 
-- 
Jean Parpaillon
Open Source Consultant
Phone: +33 6 30 10 92 86
im: jean.parpaillon at gmail.com
skype: jean.parpaillon
linkedin: http://www.linkedin.com/in/jeanparpaillon/en

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