Source code for airflow.utils.trigger_rule

# -*- coding: utf-8 -*-
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from __future__ import unicode_literals

from builtins import object
from typing import Set

[docs]class TriggerRule(object): ALL_SUCCESS = 'all_success' ALL_FAILED = 'all_failed' ALL_DONE = 'all_done' ONE_SUCCESS = 'one_success' ONE_FAILED = 'one_failed' NONE_FAILED = 'none_failed' NONE_SKIPPED = 'none_skipped' DUMMY = 'dummy' _ALL_TRIGGER_RULES = set() # type: Set[str] @classmethod def is_valid(cls, trigger_rule): return trigger_rule in cls.all_triggers() @classmethod def all_triggers(cls): if not cls._ALL_TRIGGER_RULES: cls._ALL_TRIGGER_RULES = { getattr(cls, attr) for attr in dir(cls) if not attr.startswith("_") and not callable(getattr(cls, attr)) } return cls._ALL_TRIGGER_RULES