Dev:LHG DAS-Interface Technical description

The DAS interface is residing on a bridge server, residing in the LH-intranet. It subscribes to a "MOC/SARA" KAFKA Topic.

Inbound information stream from DAS

Through this it which recieves DAS-Update messages bearing these information:

• Flight plan departure date/time
• New departure date/time
• Flight number
• Planned craft
  • manufacturer (e.g. Boing)
  • type (e.g. 747-800)
  • Tail-Code (Registration Number)
• Status (on plan / delayed / cancelled )
• Optional:
  • Status (on plan / delayed / cancelled )
  • Delay time
  • Delay reason

The updates can occur in a random time, but the closer the flight event comes, the more changes typically occur.

Local storage

After one or more DAS-Update messages have been received, a local cache is built, which bears one file per departure date (from initial flight plan date, not new departure date).

Each file holds a list of these elements

OperatingCarrier (string, e.g. LH)
Flightnumber (string, e.g. LH410)
OriginPort (string, e.g. FRA)
DestinationPort (string, e.g. JFK)
Schedule
   > ScheduledDepartureDateTime_UTC (datetime)
   > ScheduledArrivalDateTime_UTC (datetime)
ScheduleUpdate
   > UpdatedDepartureDateTime_UTC (datetime)
   > UpdatedArrivalDateTime_UTC (datetime)
   > UpdatedCraftmanufacturer (string, e.g. Airbus)
   > UpdatedCraftType (string, e.g. 747-800)
   > UpdatedTailCode (string, e.g. DLHZR)
Status
   > OnPlan / Delayed / Cancelled (int-enum, e.g. 0,1,2)
   > DelayTimeInMinutes (int, 0)
   > DelayReason (string, "Drunken Pilot")

See also

• LHG:DAS Interface