114 lines
3.4 KiB
Python
114 lines
3.4 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 keystoneclient.auth.identity import v2 as v2_client
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from keystoneclient.auth.identity import v3 as v3_client
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from keystoneclient 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 neutron_lbaas._i18n import _LE
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LOG = logging.getLogger(__name__)
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_SESSION = None
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OPTS = [
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cfg.StrOpt(
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'auth_url',
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default='http://127.0.0.1:5000/v2.0',
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help=_('Authentication endpoint'),
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),
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cfg.StrOpt(
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'admin_user',
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default='admin',
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help=_('The service admin user name'),
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),
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cfg.StrOpt(
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'admin_tenant_name',
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default='admin',
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help=_('The service admin tenant name'),
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),
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cfg.StrOpt(
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'admin_password',
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default='password',
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help=_('The service admin password'),
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),
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cfg.StrOpt(
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'admin_user_domain',
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default='admin',
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help=_('The admin user domain name'),
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),
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cfg.StrOpt(
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'admin_project_domain',
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default='admin',
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help=_('The admin project domain name'),
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),
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cfg.StrOpt(
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'region',
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default='RegionOne',
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help=_('The deployment region'),
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),
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cfg.StrOpt(
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'service_name',
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default='lbaas',
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help=_('The name of the service'),
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),
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cfg.StrOpt(
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'auth_version',
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default='2',
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help=_('The auth version used to authenticate'),
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)
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]
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cfg.CONF.register_opts(OPTS, 'service_auth')
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def get_session():
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"""Initializes a Keystone session.
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:returns: 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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auth_url = cfg.CONF.service_auth.auth_url
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kwargs = {'auth_url': auth_url,
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'username': cfg.CONF.service_auth.admin_user,
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'password': cfg.CONF.service_auth.admin_password}
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if cfg.CONF.service_auth.auth_version == '2':
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client = v2_client
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kwargs['tenant_name'] = cfg.CONF.service_auth.admin_tenant_name
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elif cfg.CONF.service_auth.auth_version == '3':
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client = v3_client
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kwargs['project_name'] = cfg.CONF.service_auth.admin_tenant_name
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kwargs['user_domain_name'] = (cfg.CONF.service_auth.
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admin_user_domain)
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kwargs['project_domain_name'] = (cfg.CONF.service_auth.
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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(auth=kc)
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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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