65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utility functions for accessing Openstack Keystone."""
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import os
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from keystoneauth1.identity import v3
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from keystoneauth1 import session
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from oslo_config import cfg
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CONF = cfg.CONF
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class KeystoneUtils(object):
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"""Utility methods for using Keystone."""
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@staticmethod
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def get_session():
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"""Get an initialized keystone session.
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Authentication is based on the keystone_authtoken
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section of the config file primarily. If that fails
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then attempt to create a session from environmental
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variables. This is for cases of the CLI needing
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a token.
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"""
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auth_info = dict()
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auth_fields = ['auth_url', 'username', 'password', 'project_id',
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'user_domain_name']
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try:
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for f in auth_fields:
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auth_info[f] = getattr(CONF.keystone_authtoken, f)
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auth = v3.Password(**auth_info)
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ks_session = session.Session(auth=auth)
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# Test the session
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ks_session.get_auth_headers()
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except Exception: # nosec this isn't a security issue
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pass
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else:
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return ks_session
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try:
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for f in auth_fields:
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auth_info[f] = os.environ.get('os_{}'.format(f).upper())
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auth = v3.Password(**auth_info)
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ks_session = session.Session(auth=auth)
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# Test the session
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ks_session.get_auth_headers()
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except Exception:
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raise Exception('Missing credential information for Keystone.')
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return ks_session
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