Active and Available Inventory (AAI) is the OpenECOMP ONAP subsystem that provides real-time views of available Resources and Services and their relationships. AAI (sometimes referred to as A&AI) not only forms a registry of active, available, and assigned assets, it also maintains up-to-date views of the multidimensional relationships among these assets, including their relevance to different components of OpenECOMPONAP.
In addition to inventory and topology management, AAI provides the ability to do inventory administration. Data in AAI is continually updated in real-time as changes are made within the cloud. Because AAI is metadata-driven, new resources and services can be added quickly with Service Design and Creation (SDC) catalog definitions, using the AAI model loader, thus eliminating the need for lengthy development cycles. In addition, new inventory item types can be added quickly through schema configuration files.
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AAI uses a central registry to create a global view of inventory and network topology. AAI receives updates from various inventory masters distributed throughout the OpenECOMP ONAP infrastructure, and persists just enough to maintain the global view. As transactions occur, AAI persists asset attributes and relationships into the federated view based on configurable metadata definitions for each activity that determine what is relevant to the AAI inventory. AAI provides standard APIs to enable queries from various clients regarding inventory and topology. Queries can be supported for a specific asset or a collection of assets. The AAI global view of relationships is necessary for forming aggregate views of detailed inventory across the distributed master data sources.
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