Source code for airflow.sensors.time_delta

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from airflow.sensors.base import BaseSensorOperator
from airflow.triggers.temporal import DateTimeTrigger
from airflow.utils import timezone
from airflow.utils.context import Context


[docs]class TimeDeltaSensor(BaseSensorOperator): """ Waits for a timedelta after the run's data interval. :param delta: time length to wait after the data interval before succeeding. """ def __init__(self, *, delta, **kwargs): super().__init__(**kwargs) self.delta = delta
[docs] def poke(self, context: Context): target_dttm = context['data_interval_end'] target_dttm += self.delta self.log.info('Checking if the time (%s) has come', target_dttm) return timezone.utcnow() > target_dttm
[docs]class TimeDeltaSensorAsync(TimeDeltaSensor): """ A drop-in replacement for TimeDeltaSensor that defers itself to avoid taking up a worker slot while it is waiting. :param delta: time length to wait after the data interval before succeeding. """
[docs] def execute(self, context: Context): target_dttm = context['data_interval_end'] target_dttm += self.delta self.defer(trigger=DateTimeTrigger(moment=target_dttm), method_name="execute_complete")
[docs] def execute_complete(self, context, event=None): """Callback for when the trigger fires - returns immediately.""" return None

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