Dean Troyer 712a8c7f9c Add API versioning support
* Specific versions supported are managed in XXXXXX.client.py with a
  mapping from version to client class.  This is based on the scheme
  that is included in novaclient; none of the other client libs have
  that capability.

Change-Id: I930b197f1189e7f52c3b0096e73e0773cf925542
2012-05-10 15:52:15 -05:00

64 lines
2.0 KiB
Python

# Copyright 2012 OpenStack LLC.
# All Rights Reserved
#
# 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.
#
# vim: tabstop=4 shiftwidth=4 softtabstop=4
import logging
from openstackclient.common import exceptions as exc
from openstackclient.common import utils
LOG = logging.getLogger(__name__)
API_VERSIONS = {
'2.0': 'keystoneclient.v2_0.client.Client',
}
def get_client_class(version):
"""Returns the client class for the requested API version
"""
try:
client_path = API_VERSIONS[str(version)]
except (KeyError, ValueError):
msg = "Invalid client version '%s'. must be one of: %s" % (
(version, ', '.join(API_VERSIONS.keys())))
raise exc.UnsupportedVersion(msg)
return utils.import_class(client_path)
def make_client(instance):
"""Returns an identity service client.
"""
identity_client = get_client_class(instance._api_version['identity'])
if instance._url:
LOG.debug('instantiating identity client: token flow')
client = identity_client(
endpoint=instance._url,
token=instance._token,
)
else:
LOG.debug('instantiating identity client: password flow')
client = identity_client(
username=instance._username,
password=instance._password,
tenant_name=instance._tenant_name,
tenant_id=instance._tenant_id,
auth_url=instance._auth_url,
region_name=instance._region_name,
)
return client