Skip to content

Latest commit

 

History

History
29 lines (24 loc) · 1.36 KB

travel-system-api.md

File metadata and controls

29 lines (24 loc) · 1.36 KB
Raw

Travel System API

The travel system poller queries the external travel system API for changes to bookings. For the MVP, one travel system will be supported but our choice of architecture allows us to extend and support more in future.

If an update is found it is reported back to the booking store and once updated, an event is fired into the rest of the application.

TravelSystemInterfaceFinder queries the travel system when a booking is added. This verifies the booking can be found in the travel system and allows for the booking to be enriched with more information that can't be derived from the booking number, e.g., seat number, departure times, etc.

Sequence diagrams

Booking added to booking system

sequenceDiagram
    BookingSystem->>TravelSystemInterfaceFinder: New booking
    TravelSystemInterfaceFinder->>TravelSystemInterfaceFinder: Find API
    TravelSystemInterfaceFinder->>TravelSystem: booking ID
    TravelSystem-->>TravelSystemInterfaceFinder: Enriched booking
    TravelSystemInterfaceFinder-->>BookingSystem: Enriched booking
Loading

Update from travel system

sequenceDiagram
    TravelSystemPoller->>TravelSystem: Check for updates
    opt When booking update available
        TravelSystem-->>TravelSystemPoller: Booking update
        TravelSystemPoller-)BookingSystem: Booking update
    end
Loading