Active and Available Inventory (AAI) is the OpenECOMP subsystem that provides real-time views of available Resources, Services, Products, Offers, 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 OpenECOMP.
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The AAI subsystem uses graph data technology to store relationships between inventory items. Graph traversals can then be used to identify chains of dependencies between items. Relationships captured by AAI include “top to bottom” "top-to-bottom" relationships such as those defined in SDC when products are composed of services, and services are composed of resources. It also includes “side-to-side” relationships such as end-to-end connectivity of virtualized functions to form service chains. AAI also keeps track of the span of control of each controller, and is queried by MSO and placement functions to identify which controller to invoke to perform a given operation.
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