71 lines
2.6 KiB
Python
71 lines
2.6 KiB
Python
# Copyright 2015 Rackspace
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from keystoneauth1.identity import v2 as v2_client
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from keystoneauth1.identity import v3 as v3_client
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from keystoneauth1 import session
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import excutils
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from octavia.i18n import _LE
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LOG = logging.getLogger(__name__)
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cfg.CONF.import_group('keystone_authtoken', 'keystonemiddleware.auth_token')
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cfg.CONF.import_group('keystone_authtoken_v3', 'octavia.common.config')
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_SESSION = None
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def get_session():
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"""Initializes a Keystone session.
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:return: a Keystone Session object
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:raises Exception: if the session cannot be established
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"""
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global _SESSION
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if not _SESSION:
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kwargs = {'auth_url': cfg.CONF.keystone_authtoken.auth_uri,
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'username': cfg.CONF.keystone_authtoken.admin_user,
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'password': cfg.CONF.keystone_authtoken.admin_password}
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if cfg.CONF.keystone_authtoken.auth_version == '2':
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client = v2_client
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kwargs['tenant_name'] = (cfg.CONF.keystone_authtoken.
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admin_tenant_name)
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elif cfg.CONF.keystone_authtoken.auth_version == '3':
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client = v3_client
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kwargs['project_name'] = (cfg.CONF.keystone_authtoken.
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admin_tenant_name)
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kwargs['user_domain_name'] = (cfg.CONF.keystone_authtoken_v3.
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admin_user_domain)
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kwargs['project_domain_name'] = (cfg.CONF.keystone_authtoken_v3.
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admin_project_domain)
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else:
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raise Exception('Unknown keystone version!')
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try:
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kc = client.Password(**kwargs)
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_SESSION = session.Session(
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auth=kc, verify=(cfg.CONF.keystone_authtoken.cafile or
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not cfg.CONF.keystone_authtoken.insecure))
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.exception(_LE("Error creating Keystone session."))
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return _SESSION
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