airflow.timetables.interval

Attributes

Delta

Classes

`CronDataIntervalTimetable`	Timetable that schedules data intervals with a cron expression.
`DeltaDataIntervalTimetable`	Timetable that schedules data intervals with a time delta.

Module Contents

airflow.timetables.interval.Delta[source]

class airflow.timetables.interval.CronDataIntervalTimetable(cron, timezone)[source]

Bases: airflow.timetables._cron.CronMixin, _DataIntervalTimetable

Timetable that schedules data intervals with a cron expression.

This corresponds to schedule=<cron>, where <cron> is either a five/six-segment representation, or one of cron_presets.

The implementation extends on croniter to add timezone awareness. This is because croniter works only with naive timestamps, and cannot consider DST when determining the next/previous time.

Don’t pass @once in here; use OnceTimetable instead.

classmethod deserialize(data)[source]

Deserialize a timetable from data.

This is called when a serialized DAG is deserialized. data will be whatever was returned by serialize during DAG serialization. The default implementation constructs the timetable without any arguments.

serialize()[source]

Serialize the timetable for JSON encoding.

This is called during DAG serialization to store timetable information in the database. This should return a JSON-serializable dict that will be fed into deserialize when the DAG is deserialized. The default implementation returns an empty dict.

infer_manual_data_interval(*, run_after)[source]

When a DAG run is manually triggered, infer a data interval for it.

This is used for e.g. manually-triggered runs, where run_after would be when the user triggers the run. The default implementation raises NotImplementedError.

class airflow.timetables.interval.DeltaDataIntervalTimetable(delta)[source]

Bases: airflow.timetables._delta.DeltaMixin, _DataIntervalTimetable

Timetable that schedules data intervals with a time delta.

This corresponds to schedule=<delta>, where <delta> is either a datetime.timedelta or dateutil.relativedelta.relativedelta instance.