manager.py 文件源码

def _refresh_power_devices(self):
        # Ensure that we have a fresh view of the DB
        with transaction.commit_manually():
            transaction.commit()

        with self._lock:
            for device in PowerControlDevice.objects.all():
                if device.sockaddr not in self._power_devices:
                    self._power_devices[device.sockaddr] = device