Source code for airflow.sensors.weekday

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

from airflow.sensors.base import BaseSensorOperator
from airflow.utils import timezone
from airflow.utils.weekday import WeekDay


[docs]class DayOfWeekSensor(BaseSensorOperator): """ Waits until the first specified day of the week. For example, if the execution day of the task is '2018-12-22' (Saturday) and you pass 'FRIDAY', the task will wait until next Friday. **Example** (with single day): :: weekend_check = DayOfWeekSensor( task_id='weekend_check', week_day='Saturday', use_task_execution_day=True, dag=dag) **Example** (with multiple day using set): :: weekend_check = DayOfWeekSensor( task_id='weekend_check', week_day={'Saturday', 'Sunday'}, use_task_execution_day=True, dag=dag) **Example** (with :class:`~airflow.utils.weekday.WeekDay` enum): :: # import WeekDay Enum from airflow.utils.weekday import WeekDay weekend_check = DayOfWeekSensor( task_id='weekend_check', week_day={WeekDay.SATURDAY, WeekDay.SUNDAY}, use_task_execution_day=True, dag=dag) :param week_day: Day of the week to check (full name). Optionally, a set of days can also be provided using a set. Example values: * ``"MONDAY"``, * ``{"Saturday", "Sunday"}`` * ``{WeekDay.TUESDAY}`` * ``{WeekDay.SATURDAY, WeekDay.SUNDAY}`` :type week_day: iterable or airflow.utils.weekday.WeekDay :param use_task_execution_day: If ``True``, uses task's execution day to compare with week_day. Execution Date is Useful for backfilling. If ``False``, uses system's day of the week. Useful when you don't want to run anything on weekdays on the system. :type use_task_execution_day: bool """ def __init__(self, *, week_day, use_task_execution_day=False, **kwargs): super().__init__(**kwargs) self.week_day = week_day self.use_task_execution_day = use_task_execution_day self._week_day_num = WeekDay.validate_week_day(week_day)
[docs] def poke(self, context): self.log.info( 'Poking until weekday is in %s, Today is %s', self.week_day, WeekDay(timezone.utcnow().isoweekday()).name, ) if self.use_task_execution_day: return context['logical_date'].isoweekday() in self._week_day_num else: return timezone.utcnow().isoweekday() in self._week_day_num

Was this entry helpful?