airflow trigger_rule 源码
airflow trigger_rule 代码
文件路径：/airflow/utils/trigger_rule.py
#
# 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 __future__ import annotations
from enum import Enum
class TriggerRule(str, Enum):
"""Class with task's trigger rules."""
ALL_SUCCESS = 'all_success'
ALL_FAILED = 'all_failed'
ALL_DONE = 'all_done'
ONE_SUCCESS = 'one_success'
ONE_FAILED = 'one_failed'
ONE_DONE = 'one_done'
NONE_FAILED = 'none_failed'
NONE_FAILED_OR_SKIPPED = 'none_failed_or_skipped'
NONE_SKIPPED = 'none_skipped'
DUMMY = 'dummy'
ALWAYS = 'always'
NONE_FAILED_MIN_ONE_SUCCESS = "none_failed_min_one_success"
ALL_SKIPPED = 'all_skipped'
@classmethod
def is_valid(cls, trigger_rule: str) -> bool:
"""Validates a trigger rule."""
return trigger_rule in cls.all_triggers()
@classmethod
def all_triggers(cls) -> set[str]:
"""Returns all trigger rules."""
return set(cls.__members__.values())
def __str__(self) -> str:
return self.value
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