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  1. Release Requirements
  2. REQ-25

Policy Update Notifications

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      The new Policy Framework architecture developed and released in Dublin did not have time to build support for PEP (Policy Enforcement Point) Applications to receive Policy Update Notifications when a new or updated Policy is deployed from the PAP (Policy Administration Point) to any of the PDP engines. For some PDP engines, update notifications is irrelevant since they are the enforcement of their policy types. Notably, the Drools and Apex PDP engines enforce policies and are automatically updated when a new or updated policy is pushed to it. However, the XACML PDP engine hosts the Policy Decision API for many clients in ONAP to retrieve at runtime the a Policy decision for enforcement.

      Some ONAP clients, such as the DCAE Policy Handler, require a more immediate notification in order to retrieve the latest policy for enforcement during runtime. That is, changing thresholds, etc. for DCAE uS should happen fairly quickly as those components are constantly enforcing policy while retrieving events/alarms/etc. Other ONAP clients, such as OOF, do not require the immediate notification as they only call policy in response to an event initiated on their end.

       

      https://wiki.onap.org/display/DW/Policy+Update+Notifications

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