Source code for airflow.models.taskinstancekey

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from __future__ import annotations

from typing import NamedTuple

[docs]class TaskInstanceKey(NamedTuple): """Key used to identify task instance."""
[docs] dag_id: str
[docs] task_id: str
[docs] run_id: str
[docs] try_number: int = 1
[docs] map_index: int = -1
[docs] 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
[docs] 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
[docs] 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)
[docs] def key(self) -> TaskInstanceKey: """For API-compatibly with TaskInstance. Returns self """ return self

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