airflow dag_source_endpoint 源码
airflow dag_source_endpoint 代码
文件路径：/airflow/api_connexion/endpoints/dag_source_endpoint.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 http import HTTPStatus
from flask import Response, current_app, request
from itsdangerous import BadSignature, URLSafeSerializer
from airflow.api_connexion import security
from airflow.api_connexion.exceptions import NotFound
from airflow.api_connexion.schemas.dag_source_schema import dag_source_schema
from airflow.models.dagcode import DagCode
from airflow.security import permissions
@security.requires_access([(permissions.ACTION_CAN_READ, permissions.RESOURCE_DAG_CODE)])
def get_dag_source(*, file_token: str) -> Response:
"""Get source code using file token"""
secret_key = current_app.config["SECRET_KEY"]
auth_s = URLSafeSerializer(secret_key)
try:
path = auth_s.loads(file_token)
dag_source = DagCode.code(path)
except (BadSignature, FileNotFoundError):
raise NotFound("Dag source not found")
return_type = request.accept_mimetypes.best_match(['text/plain', 'application/json'])
if return_type == 'text/plain':
return Response(dag_source, headers={'Content-Type': return_type})
if return_type == 'application/json':
content = dag_source_schema.dumps(dict(content=dag_source))
return Response(content, headers={'Content-Type': return_type})
return Response("Not Allowed Accept Header", status=HTTPStatus.NOT_ACCEPTABLE)
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