airflow backend 源码
airflow backend 代码
文件路径：/airflow/lineage/backend.py
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# 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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"""Sends lineage metadata to a backend"""
from __future__ import annotations
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from airflow.models.baseoperator import BaseOperator
class LineageBackend:
"""Sends lineage metadata to a backend"""
def send_lineage(
self,
operator: BaseOperator,
inlets: list | None = None,
outlets: list | None = None,
context: dict | None = None,
):
"""
Sends lineage metadata to a backend
:param operator: the operator executing a transformation on the inlets and outlets
:param inlets: the inlets to this operator
:param outlets: the outlets from this operator
:param context: the current context of the task instance
"""
raise NotImplementedError()
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