Coverage for /pythoncovmergedfiles/medio/medio/src/airflow/build/lib/airflow/models/operator.py: 64%

1# 

2# Licensed to the Apache Software Foundation (ASF) under one 

3# or more contributor license agreements. See the NOTICE file 

4# distributed with this work for additional information 

5# regarding copyright ownership. The ASF licenses this file 

6# to you under the Apache License, Version 2.0 (the 

7# "License"); you may not use this file except in compliance 

8# with the License. You may obtain a copy of the License at 

9# 

10# http://www.apache.org/licenses/LICENSE-2.0 

11# 

12# Unless required by applicable law or agreed to in writing, 

13# software distributed under the License is distributed on an 

14# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 

15# KIND, either express or implied. See the License for the 

16# specific language governing permissions and limitations 

17# under the License. 

18from __future__ import annotations 

19 

20from typing import Union 

21 

22from airflow.models.abstractoperator import AbstractOperator 

23from airflow.models.baseoperator import BaseOperator 

24from airflow.models.mappedoperator import MappedOperator 

25from airflow.typing_compat import TypeGuard 

26 

27Operator = Union[BaseOperator, MappedOperator] 

28 

29 

30def needs_expansion(task: AbstractOperator) -> TypeGuard[Operator]: 

31 """Whether a task needs expansion at runtime. 

32 

33 A task needs expansion if it either 

34 

35 * Is a mapped operator, or 

36 * Is in a mapped task group. 

37 

38 This is implemented as a free function (instead of a property) so we can 

39 make it a type guard. 

40 """ 

41 if isinstance(task, MappedOperator): 

42 return True 

43 if task.get_closest_mapped_task_group() is not None: 

44 return True 

45 return False 

46 

47 

48__all__ = ["Operator", "needs_expansion"]