| # |
| # 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 typing import NamedTuple |
| |
| |
| class TaskInstanceKey(NamedTuple): |
| """Key used to identify task instance.""" |
| |
| dag_id: str |
| task_id: str |
| run_id: str |
| try_number: int = 1 |
| map_index: int = -1 |
| |
| @property |
| def primary(self) -> tuple[str, str, str, int]: |
| """Return task instance primary key part of the key.""" |
| return self.dag_id, self.task_id, self.run_id, self.map_index |
| |
| @property |
| def reduced(self) -> TaskInstanceKey: |
| """Remake the key by subtracting 1 from try number to match in memory information.""" |
| return TaskInstanceKey( |
| self.dag_id, self.task_id, self.run_id, max(1, self.try_number - 1), self.map_index |
| ) |
| |
| def with_try_number(self, try_number: int) -> TaskInstanceKey: |
| """Returns TaskInstanceKey with provided ``try_number``.""" |
| return TaskInstanceKey(self.dag_id, self.task_id, self.run_id, try_number, self.map_index) |
| |
| @property |
| def key(self) -> TaskInstanceKey: |
| """For API-compatibly with TaskInstance. |
| |
| Returns self |
| """ |
| return self |