Source code for airflow.sensors.time_delta_sensor

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from airflow.sensors.base_sensor_operator import BaseSensorOperator
from airflow.utils import timezone
from airflow.utils.decorators import apply_defaults


[docs]class TimeDeltaSensor(BaseSensorOperator): """ Waits for a timedelta after the task's execution_date + schedule_interval. In Airflow, the daily task stamped with ``execution_date`` 2016-01-01 can only start running on 2016-01-02. The timedelta here represents the time after the execution period has closed. :param delta: time length to wait after execution_date before succeeding :type delta: datetime.timedelta """ @apply_defaults def __init__(self, delta, *args, **kwargs): super(TimeDeltaSensor, self).__init__(*args, **kwargs) self.delta = delta
[docs] def poke(self, context): dag = context['dag'] target_dttm = dag.following_schedule(context['execution_date']) target_dttm += self.delta self.log.info('Checking if the time (%s) has come', target_dttm) return timezone.utcnow() > target_dttm