# # 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(): """Load authentication backends.""" auth_backends = "airflow.api.auth.backend.default" try: auth_backends = conf.get("api", "auth_backends") except AirflowConfigException: pass backends = [] try: for backend in auth_backends.split(","): 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