90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
# Copyright 2012 OpenStack LLC.
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# All Rights Reserved
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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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#
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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"""Manage access to the clients, including authenticating when needed.
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"""
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import logging
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from openstackclient.compute import client as compute_client
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from openstackclient.identity import client as identity_client
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from openstackclient.image import client as image_client
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LOG = logging.getLogger(__name__)
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class ClientCache(object):
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"""Descriptor class for caching created client handles.
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"""
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def __init__(self, factory):
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self.factory = factory
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self._handle = None
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def __get__(self, instance, owner):
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# Tell the ClientManager to login to keystone
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if self._handle is None:
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self._handle = self.factory(instance)
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return self._handle
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class ClientManager(object):
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"""Manages access to API clients, including authentication.
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"""
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compute = ClientCache(compute_client.make_client)
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identity = ClientCache(identity_client.make_client)
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image = ClientCache(image_client.make_client)
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def __init__(self, token=None, url=None,
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auth_url=None,
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tenant_name=None, tenant_id=None,
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username=None, password=None,
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region_name=None,
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api_version=None,
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):
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self._token = token
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self._url = url
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self._auth_url = auth_url
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self._tenant_name = tenant_name
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self._tenant_id = tenant_id
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self._username = username
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self._password = password
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self._region_name = region_name
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self._api_version = api_version
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self._service_catalog = None
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if not self._url:
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# Populate other password flow attributes
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self._token = self.identity.auth_token
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self._service_catalog = self.identity.service_catalog
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return
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def get_endpoint_for_service_type(self, service_type):
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"""Return the endpoint URL for the service type.
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"""
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# See if we are using password flow auth, i.e. we have a
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# service catalog to select endpoints from
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if self._service_catalog:
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endpoint = self._service_catalog.url_for(
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service_type=service_type)
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else:
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# Hope we were given the correct URL.
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endpoint = self._url
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return endpoint
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