airflow types 源码
airflow types 代码
文件路径：/airflow/utils/types.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
import enum
from typing import TYPE_CHECKING
from airflow.typing_compat import TypedDict
if TYPE_CHECKING:
from datetime import datetime
class ArgNotSet:
"""Sentinel type for annotations, useful when None is not viable.
Use like this::
def is_arg_passed(arg: Union[ArgNotSet, None] = NOTSET) -> bool:
if arg is NOTSET:
return False
return True
is_arg_passed() # False.
is_arg_passed(None) # True.
"""
NOTSET = ArgNotSet()
"""Sentinel value for argument default. See ``ArgNotSet``."""
class DagRunType(str, enum.Enum):
"""Class with DagRun types"""
BACKFILL_JOB = "backfill"
SCHEDULED = "scheduled"
MANUAL = "manual"
DATASET_TRIGGERED = "dataset_triggered"
def __str__(self) -> str:
return self.value
def generate_run_id(self, logical_date: datetime) -> str:
return f"{self}__{logical_date.isoformat()}"
@staticmethod
def from_run_id(run_id: str) -> DagRunType:
"""Resolved DagRun type from run_id."""
for run_type in DagRunType:
if run_id and run_id.startswith(f"{run_type.value}__"):
return run_type
return DagRunType.MANUAL
class EdgeInfoType(TypedDict):
"""
Represents extra metadata that the DAG can store about an edge,
usually generated from an EdgeModifier.
"""
label: str | None
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