Figure 2:4.149.4-1: Interaction Diagram

2:4.149.4.1 Close Report Context Request Message

The Sender sends an event to the Manager to terminate an existing report context.

The Sender shall support sending such messages to more than one Manager. The Manager shall support handling such messages from more than one Sender.

2:4.149.4.1.1 Trigger Events

The Sender determines no further synchronization required for this report context. The report instance being worked on may or may not be complete.

2:4.149.4.1.2 Message Semantics

This message is a FHIRcast Request Context Change request. The Sender is the FHIRcast Subscriber. The Manager is the FHIRcast Hub.

The event.context shall conform to DiagnosticReport close Event.

If the Sender is retrying this context change request due to not receiving a response from the Manager for a prior request, then the Sender shall use the same event.id. If the Manager received the original request, this allows it to detect that it is a duplicate message.

If the Sender retries the request due to an error response from the Manager, then the Sender shall assign a new event.id to indicate that it is a new request.

2:4.149.4.1.3 Expected Actions

The Manager shall receive and validate the request. See 2:3.149.4.2.2 for error conditions.

If the Manager accepts the request, then per FHIRcast, the Manager will remove from memory the report context of the received DiagnosticReport-close event, as well as all associated context and content.

Per FHIRcast, the Manager shall set the current context to empty.

2:4.149.4.2 Close Report Context Response Message

2:4.149.4.2.1 Trigger Events

The Manager finishes processing the Close Report Context request.

2:4.149.4.2.2 Message Semantics

This message is a FHIRcast Request Context Change response. The Sender is the FHIRcast Subscriber. The Manager is the FHIRcast Hub.

The Manager shall return 400 Bad Request error if:

• If timestamp, id or event are not set
• If event.context does not include report
• If the report context does not include resource.id
• if event.hub.topic is not a known session

The Manager may return other applicable HTTP error status codes.

2:4.149.4.2.3 Expected Actions

If the response is an error, then the Sender may consider retrying the request.

2:4.149.5 Security Considerations

See IRA Security Considerations.

Local policy should consider what users and systems have permissions to close a report context and configure appropriately.

2:4.149.5.1 Security Audit Considerations

This transaction is not associated with an ATNA Trigger Event.