OpenStack Block Storage (Cinder)
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# Licensed 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 keystoneauth1 import loading as ks_loading
from keystoneauth1 import service_token
from oslo_config import cfg
from cinder import exception
CONF = cfg.CONF
_SERVICE_AUTH = None
SERVICE_USER_GROUP = 'service_user'
service_user = cfg.OptGroup(
SERVICE_USER_GROUP,
title='Service token authentication type options',
help="""
Configuration options for service to service authentication using a service
token. These options allow to send a service token along with the
user's token when contacting external REST APIs.
"""
)
service_user_opts = [
cfg.BoolOpt('send_service_user_token',
default=False,
help="""
When True, if sending a user token to an REST API, also send a service token.
""")
]
CONF.register_group(service_user)
CONF.register_opts(service_user_opts, group=service_user)
ks_loading.register_session_conf_options(CONF, SERVICE_USER_GROUP)
ks_loading.register_auth_conf_options(CONF, SERVICE_USER_GROUP)
def reset_globals():
"""For async unit test consistency."""
global _SERVICE_AUTH
_SERVICE_AUTH = None
def get_auth_plugin(context, auth=None):
if auth:
user_auth = auth
else:
user_auth = context.get_auth_plugin()
if CONF.service_user.send_service_user_token:
global _SERVICE_AUTH
if not _SERVICE_AUTH:
_SERVICE_AUTH = ks_loading.load_auth_from_conf_options(
CONF, group=SERVICE_USER_GROUP)
if _SERVICE_AUTH is None:
# This can happen if no auth_type is specified, which probably
# means there's no auth information in the [service_user] group
raise exception.ServiceUserTokenNoAuth()
return service_token.ServiceTokenAuthWrapper(
user_auth=user_auth, service_auth=_SERVICE_AUTH)
return user_auth