Source code for airflow.sensors.time_delta

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from __future__ import annotations

from typing import TYPE_CHECKING, NoReturn

from airflow.exceptions import AirflowSkipException
from airflow.sensors.base import BaseSensorOperator
from airflow.triggers.temporal import DateTimeTrigger
from airflow.utils import timezone

if TYPE_CHECKING:
    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. .. seealso:: For more information on how to use this sensor, take a look at the guide: :ref:`howto/operator:TimeDeltaSensor` """ 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 deferrable drop-in replacement for TimeDeltaSensor. Will 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. .. seealso:: For more information on how to use this sensor, take a look at the guide: :ref:`howto/operator:TimeDeltaSensorAsync` """
[docs] def execute(self, context: Context) -> NoReturn: target_dttm = context["data_interval_end"] target_dttm += self.delta try: trigger = DateTimeTrigger(moment=target_dttm) except (TypeError, ValueError) as e: if self.soft_fail: raise AirflowSkipException("Skipping due to soft_fail is set to True.") from e raise self.defer(trigger=trigger, method_name="execute_complete")
[docs] def execute_complete(self, context, event=None) -> None: """Execute for when the trigger fires - return immediately.""" return None

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