[Fiware-tmforum] FIWARE - TMForum Asset Management

[Francisco de la Vega]

Hi Pierre,

We have been working in the backend of the system, and we have found that
we need to maintain the existing management of digital assets made by our
Store in order to be able to validate the actual digital assets which are
included as ProductSpecs in the catalog.

Enclosed you can find a diagram that reflects this situation. There you can
see that we have renamed the authorization proxy. This has been done since
this proxy is currently making more complex validations than only the
access token of the user.

Regarding the asset management it is important to note that selling digital
assets require some specific validations. For example validating that a
provider creating a data product is the owner of the data (and this is
diffrent depending if the data in in CKAN or in the Context Broker). In
this respect, we are following this approach:

   - Specific types of digital assets are registered using plugins, which
   implement a set of handlers that allow to perform the needed validations.
   (This is already implemented).

   - The existing types of supported digital assets are exposed through an
   API. Currently, we are using our existing API since we haven't found how to
   save this info using the TMForum APIs. If you think that this can be done
   using a concrete TMForum API we can handle it.

   - The concrete asset type is included as a characteristic in the
   productSpecs

   - When a new product is created the logic-layer intercepts this request
   and validates that the given asset type is supported using the Asset
   Management module.

Do not hesitate to ask if you have any doubt or give any comment regarding
this architecture.

Best regards,
Francisco
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