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# Copyright 2012 Managed I.T.
#
# Author: Kiall Mac Innes <kiall@managedit.ie>
#
# 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 requests.auth import AuthBase
from urlparse import urlparse
from keystoneclient.v2_0.client import Client
class KeystoneAuth(AuthBase):
def __init__(self, auth_url, username=None, password=None, tenant_id=None,
tenant_name=None, token=None, service_type=None,
endpoint_type=None, region_name=None, sudo_tenant_id=None):
self.auth_url = str(auth_url).rstrip('/')
self.username = username
self.password = password
self.tenant_id = tenant_id
self.tenant_name = tenant_name
self.token = token
self.sudo_tenant_id = sudo_tenant_id
if (not username and not password) and not token:
raise ValueError('A username and password, or token is required')
if not service_type or not endpoint_type:
raise ValueError("Need service_type and/or endpoint_type")
self.service_type = service_type
self.endpoint_type = endpoint_type
self.region_name = region_name
self.refresh_auth()
def __call__(self, request):
if not self.token:
self.refresh_auth()
request.headers['X-Auth-Token'] = self.token
if self.sudo_tenant_id:
request.headers['X-Designate-Sudo-Tenant-ID'] = self.sudo_tenant_id
return request
def get_ksclient(self):
insecure = urlparse(self.auth_url).scheme != 'https'
return Client(username=self.username,
password=self.password,
tenant_id=self.tenant_id,
tenant_name=self.tenant_name,
auth_url=self.auth_url,
insecure=insecure)
def get_endpoints(self, service_type=None, endpoint_type=None,
region_name=None):
return self.service_catalog.get_endpoints(
service_type=service_type,
endpoint_type=endpoint_type,
region_name=region_name)
def get_url(self, service_type=None, endpoint_type=None, region_name=None):
service_type = service_type or self.service_type
endpoint_type = endpoint_type or self.endpoint_type
region_name = region_name or self.region_name
endpoints = self.get_endpoints(service_type, endpoint_type,
region_name)
url = endpoints[service_type][0][endpoint_type]
# NOTE(kiall): The Version 1 API is the only API that has ever included
# the version number in the endpoint. Thus, it's safe to
# simply remove it if present.
url = url.rstrip('/')
if url.endswith('/v1'):
url = url[:-3]
return url
def refresh_auth(self):
ks = self.get_ksclient()
self.token = ks.auth_token
self.service_catalog = ks.service_catalog
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