airflow spec 源码
airflow spec 代码
文件路径：/airflow/listeners/spec.py
#
# 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 TYPE_CHECKING
from pluggy import HookspecMarker
if TYPE_CHECKING:
from sqlalchemy.orm.session import Session
from airflow.models.taskinstance import TaskInstance
from airflow.utils.state import TaskInstanceState
hookspec = HookspecMarker("airflow")
@hookspec
def on_task_instance_running(
previous_state: TaskInstanceState, task_instance: TaskInstance, session: Session | None
):
"""Called when task state changes to RUNNING. Previous_state can be State.NONE."""
@hookspec
def on_task_instance_success(
previous_state: TaskInstanceState, task_instance: TaskInstance, session: Session | None
):
"""Called when task state changes to SUCCESS. Previous_state can be State.NONE."""
@hookspec
def on_task_instance_failed(
previous_state: TaskInstanceState, task_instance: TaskInstance, session: Session | None
):
"""Called when task state changes to FAIL. Previous_state can be State.NONE."""
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