201809 FHIRcast

FHIRcast

Dedicated Zulip chat stream for this track.

FHIRCast Orientation Slides

Previous FHIRcast Connectathons

• 201805 FHIRcast, May 2018, Cologne, Germany
• 201801 FHIR Subscriptions, January 2018, New Orleans, LA
• 201709 FHIR Subscriptions, September 2017, San Diego, CA

Submitting WG/Project/Implementer Group

Imaging Integration, FHIR-I, CDS

Justification

The Imaging Integration working group is sponsoring a project to create a new context synchronization profile called FHIRcast (FHIR-I and CDS are co-sponsors).

We're working within the RIS/PACS community to identify a common, lightweight application synchronization standard.

This track will prototype this workflow synchronization using a webhooks pattern with FHIR as the underlying content data model according to the draft FHIRcast specification.

Proposed Track Lead

See Connectathon_Track_Lead_Responsibilities

Isaac Vetter

Track planning, coordination teleconference info

Thursday, September 20, 2018 - 9:00 am - 10:00 am Central

Webex meeting - Click the link to open the meeting in webex.

• Meeting number (access code): 806 981 149
• Meeting password: iNAPZCE3 

Join from a video system or application

• Dial 806981149@epic.webex.com 
• You can also dial 173.243.2.68 and enter your meeting number.  

  Join by phone 

• 404-397-1525 US Toll
• 877-309-8689 US Toll Free 

FHIR version

STU3

Expected participants

Sectra, Epic, Siemens, Agfa, <your name here!>

Roles

Hub

The Hub manages users' sessions, accepts subscriptions, is responsible for notifications and is closely aligned with the SMART server and FHIR server.

• Must accept new subscriptions.
• Must verify subscribed callback urls.
• Must POST notifications to subscribed callback urls.
• Must accept context change requests from subscribers and respond with a valid HTTP status.

Subscriber

Subscribes to a user's session topic on the hub, receives and processes event notifications.

• Must request subscription to topic and events on hub url.
• Must respond to url verification.
• Must accept event notification.
• May request context changes.

Scenarios

Subscriber creates new subscription; hub respond with 202

Action: Subscriber POSTs WebSub subscription request to hub for a specific hub.topic and hub.events.

Precondition: Subscriber must know hub base url, hub.topic (session identifier) and supported events. Use open-patient-chart, close-patient-chart for events for connectathon.

Success Criteria: Hub persists subscription.

Bonus point: n/a

Subscriber is notified of user session change per subscription

Action: Hub/Publisher POSTs notification to subscriber for a subscribed event and topic/session.

Precondition: Subscriber subscribes correctly, see previous scenario.

Success Criteria: Subscriber responds with 2xx code.

Bonus point: Subscriber validates X-Hub-Signature.

Bonus point*10: Subscriber changes its UI to match the patient-chart-open event.

Subscriber requests user session change

Action: Subscriber POSTs context change request to Hub's topic url.

Precondition: Subscriber subscribes correctly, see initial scenario.

Success Criteria: Hub responds with 2xx code.

Bonus point: Hub accepts context change and broadcasts corresponding notification.

Bonus point: Hub rejects context change and subscriber handles synchronization failure.

Subscriber is notified of topic/session id, hub url during SMART app EHR launch from Hub

Action: Subscribing client launches from Hub, according to SMART EHR launch.

Precondition: n/a

Success Criteria: Subscriber requests fhircast scope and receives hub base url and hub.topic in SMART launch and performs scenario #1.

Subscriber is notified of topic/session id, hub url during SMART app standalone launch

Action: Subscribing client initiates SMART standalone launch using Hub's OAuth2 server, according to SMART EHR launch.

Precondition: n/a

Success Criteria: Subscriber requests fhircast scope and receives hub base url and hub.topic in SMART launch and performs scenario #1.

Bonus point: Subscriber evalutes multiple returned sessions and chooses between them.