airflow utils 源码
airflow utils 代码
文件路径：/airflow/security/utils.py
#!/usr/bin/env python
# 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
# Licensed to Cloudera, Inc. under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. Cloudera, Inc. 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
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# 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.
#
"""Various security-related utils."""
import re
import socket
from airflow.utils.net import get_hostname
def get_components(principal) -> list[str] | None:
"""
Returns components retrieved from the kerberos principal.
-> (short name, instance (FQDN), realm)
``principal`` .
"""
if not principal:
return None
return re.split(r'[/@]', str(principal))
def replace_hostname_pattern(components, host=None):
"""Replaces hostname with the right pattern including lowercase of the name."""
fqdn = host
if not fqdn or fqdn == '0.0.0.0':
fqdn = get_hostname()
return f'{components[0]}/{fqdn.lower()}@{components[2]}'
def get_fqdn(hostname_or_ip=None):
"""Retrieves FQDN - hostname for the IP or hostname."""
try:
if hostname_or_ip:
fqdn = socket.gethostbyaddr(hostname_or_ip)[0]
if fqdn == 'localhost':
fqdn = get_hostname()
else:
fqdn = get_hostname()
except OSError:
fqdn = hostname_or_ip
return fqdn
def principal_from_username(username, realm):
"""Retrieves principal from the user name and realm."""
if ('@' not in username) and realm:
username = f"{username}@{realm}"
return username
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