| @startuml | |
| title Policy Execution | |
| participant REQUESTOR | |
| participant RESPONDEE | |
| participant PDP | |
| autonumber | |
| alt Synchronous Invocation | |
| REQUESTOR --> PDP: Execute Policy | |
| activate PDP | |
| hnote over REQUESTOR : wait | |
| PDP --> REQUESTOR: Policy Execution Result | |
| deactivate PDP | |
| else Asynchronous Invocation | |
| REQUESTOR --> PDP: Execute Policy | |
| activate PDP | |
| PDP --> RESPONDEE: Policy Execution Result | |
| deactivate PDP | |
| end | |
| @enduml |