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# 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
"""Manage access to the clients, including authenticating when needed.
"""
import logging
from quantumclient.client import HTTPClient
from quantumclient.common import exceptions as exc
from quantumclient.quantum import client as quantum_client
LOG = logging.getLogger(__name__)
class ClientCache(object):
"""Descriptor class for caching created client handles.
"""
def __init__(self, factory):
self.factory = factory
self._handle = None
def __get__(self, instance, owner):
# Tell the ClientManager to login to keystone
if self._handle is None:
self._handle = self.factory(instance)
return self._handle
class ClientManager(object):
"""Manages access to API clients, including authentication.
"""
quantum = ClientCache(quantum_client.make_client)
def __init__(self, token=None, url=None,
auth_url=None,
tenant_name=None, tenant_id=None,
username=None, password=None,
region_name=None,
api_version=None,
auth_strategy=None
):
self._token = token
self._url = url
self._auth_url = auth_url
self._tenant_name = tenant_name
self._tenant_id = tenant_id
self._username = username
self._password = password
self._region_name = region_name
self._api_version = api_version
self._service_catalog = None
self._auth_strategy = auth_strategy
return
def initialize(self):
if not self._url:
httpclient = HTTPClient(username=self._username,
tenant_name=self._tenant_name,
password=self._password,
region_name=self._region_name,
auth_url=self._auth_url)
httpclient.authenticate()
# Populate other password flow attributes
self._token = httpclient.auth_token
self._url = httpclient.endpoint_url
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