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The purpose of this spike is to investigate how fields and depth can be implemented and used in conjunction with Restconf to gather attributes from xNFs and be able to determine the depth of information retrieved.

RESTConf defines 'fields' and 'depth' parameters to control the output of a get or query request.

See https://tools.ietf.org/id/draft-ietf-netconf-restconf-07.xml and https://datatracker.ietf.org/doc/html/rfc8040#section-4.8.3

The capabilities of both parameters as defined by RESTConf

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By default, the server will include all sub-resources within a retrieved resource, which have the same resource type as the requested resource. Only one level of sub-resources with a different media type than the target resource will be returned.

The support

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/limitations

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of both parameters as implemented by the 'rests' ODL module interface (SDN-C)

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The feasibility/cost of NCMP 'translating' a fields-option without module information into a RESTConf compatible fields value. High level user story view of cost.

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