airflow __init__ 源码
airflow init 代码
文件路径：/airflow/api/init.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.
"""Authentication backend"""
from __future__ import annotations
import logging
from importlib import import_module
from airflow.configuration import conf
from airflow.exceptions import AirflowConfigException, AirflowException
log = logging.getLogger(__name__)
def load_auth():
"""Loads authentication backends"""
auth_backends = 'airflow.api.auth.backend.default'
try:
auth_backends = conf.get("api", "auth_backends")
except AirflowConfigException:
pass
backends = []
for backend in auth_backends.split(","):
try:
auth = import_module(backend.strip())
log.info("Loaded API auth backend: %s", backend)
backends.append(auth)
except ImportError as err:
log.critical("Cannot import %s for API authentication due to: %s", backend, err)
raise AirflowException(err)
return backends
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