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

    @property
[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 with_try_number(self, try_number: int) -> TaskInstanceKey:
        """Return TaskInstanceKey with provided ``try_number``."""
        return TaskInstanceKey(self.dag_id, self.task_id, self.run_id, try_number, self.map_index)

    @property
[docs]    def key(self) -> TaskInstanceKey:
        """
        For API-compatibly with TaskInstance.

        Returns self
        """
        return self

    @classmethod
[docs]    def from_dict(cls, dictionary):
        """Create TaskInstanceKey from dictionary."""
        return cls(**dictionary)