Ash Resource Fragment which is the shared foundation for TMF Relationship resources.

Provides the common attributes, relationships, validations, and actions shared between Diffo.Provider.Relationship (TMF service/resource relationships) and Diffo.Provider.AssignedToRelationship (pool assignment relationships).

Common attributes

• id — uuid4 primary key
• type — relationship type atom
• target_href — denormalised target href (set by the DetailRelationship change)
• target_type — denormalised target type (:service or :resource)
• created_at, updated_at — timestamps

Common Ash relationships

• belongs_to :source, Diffo.Provider.Instance
• belongs_to :target, Diffo.Provider.Instance