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 

System Design Overview

Provided services

The Event Handler provides the following services:

• Echo
• Publish
• Subscribe
• Unsubscribe
• AuthUpdate

Consumed services

The Event Handler consumes the following services:

• CheckAuthorizationSubscription private service from the Authorization core system
• Notification service from the subscriber client system

Use cases

The Event Handler has the following use cases:

• Publish Event 
• Register Subscription 
• Unregister Subscription 
• Update Authorization  

Endpoints

• Endpoints
• Client
• Management
• Private
• Removed Endpoints