Method install_sync_handler

celery/apps/beat.py:155–160

Install a `SIGTERM` + `SIGINT` handler saving the schedule.

(self, service: beat.Service)

        )

    def install_sync_handler(self, service: beat.Service) -> None:
        """Install a `SIGTERM` + `SIGINT` handler saving the schedule."""
        def _sync(signum: Signals, frame: FrameType) -> None:
            service.sync()
            raise SystemExit()
        platforms.signals.update(SIGTERM=_sync, SIGINT=_sync)