buildgrid.server.persistence.sql.notifier module

class buildgrid.server.persistence.sql.notifier.OperationsNotifier(sql_provider: SqlProvider, poll_interval: float = 1)

Bases: object

start() → None

stop() → None

listener_count() → int

Used for reporting job metrics about the scheduling.

begin(shutdown_requested: Event) → None

notify(job_name: str) → None

subscription(job_name: str) → Iterator[Event]

Register a threading.Event object which is triggered each time the associated job_name updates its cancelled or stage status. After waiting for an event, the caller should immediately call event.clear() if they wish to re-use the event again, otherwise the event object will remain set.