EventHandler
System Design Description Overview
The purpose of Event Handler supporting core system is providing authorized publish-subscribe messaging system to the Arrowhead Framework.
AH Service Registry
AH Authorization
AH Orchestrator
AH Event Handler
![](https://arrowhead.eu/wp-content/uploads/2022/06/overview.png)
![](https://arrowhead.eu/wp-content/uploads/2022/06/event_handler_controller-1024x733.jpeg)
The Event Handler provides the following services:
The Event Handler consumes the following services:
- CheckAuthorizationSubscription private service from the Authorization core system
- Notification service from the subscriber client system
The Event Handler has the following use cases: