Change notifications are available through the REST API and the STOMP protocol on Pilot Data Server.

REST API

A list of database changes ordered from most recent to oldest:

• Located at http://pdshost:8177/changelog.
• Parameters:
  • startId: The ID of the least recent change, or -1 for no limit. Default is -1.
  • lastKnownId: The ID of the most recent change, or -1 for no limit. Default is -1.

STOMP API

In a Viz Pilot system, the text-based message Streaming Text Oriented Messaging Protocol (STOMP) is used to subscribe to change notifications from Graphic Hub REST and Pilot Data Server. STOMP provides push notifications of new changes.

• Located at: stomp://pdshost:9876/?destination=/changelog&lastKnownId=-1.
• Parameters:
  • lastKnownId: Mandatory, should be the ID in the STOMP link that is provided by the REST API. For example, when the data stored in the Pilot database changes, a message is delivered to all of the STOMP clients that are subscribed to the server.