airflow get_task_instance 源码
airflow get_task_instance 代码
文件路径：/airflow/api/common/experimental/get_task_instance.py
#
# Licensed to the Apache Software Foundation (ASF) under one
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# 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
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# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
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# KIND, either express or implied. See the License for the
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from __future__ import annotations
from datetime import datetime
from deprecated import deprecated
from airflow.api.common.experimental import check_and_get_dag, check_and_get_dagrun
from airflow.exceptions import TaskInstanceNotFound
from airflow.models import TaskInstance
@deprecated(version="2.2.4", reason="Use DagRun.get_task_instance instead")
def get_task_instance(dag_id: str, task_id: str, execution_date: datetime) -> TaskInstance:
"""Return the task instance identified by the given dag_id, task_id and execution_date."""
dag = check_and_get_dag(dag_id, task_id)
dagrun = check_and_get_dagrun(dag=dag, execution_date=execution_date)
# Get task instance object and check that it exists
task_instance = dagrun.get_task_instance(task_id)
if not task_instance:
error_message = f'Task {task_id} instance for date {execution_date} not found'
raise TaskInstanceNotFound(error_message)
return task_instance
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