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# Copyright (c) 2013 Rackspace, Inc.
#
# 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.
import logging
from keystoneclient.v2_0 import client as ksclient
from keystoneclient import exceptions
LOG = logging.getLogger(__name__)
class AuthException(Exception):
"""Raised when authorization fails."""
def __init__(self, message):
self.message = message
class KeystoneAuthV2(object):
def __init__(self, auth_url='', username='', password='',
tenant_name='', tenant_id='', insecure=False, keystone=None):
if not all([auth_url, username, password, tenant_name or tenant_id]):
raise ValueError('Please provide auth_url, username, password,'
' and tenant_id or tenant_name)')
self._keystone = keystone or ksclient.Client(username=username,
password=password,
tenant_name=tenant_name,
auth_url=auth_url,
insecure=insecure)
self._barbican_url = None
#TODO(dmend): make these configurable
self._service_type = 'keystore'
self._endpoint_type = 'publicURL'
self.tenant_name = self._keystone.tenant_name
self.tenant_id = self._keystone.tenant_id
@property
def auth_token(self):
return self._keystone.auth_token
@property
def barbican_url(self):
if not self._barbican_url:
try:
self._barbican_url = self._keystone.service_catalog.url_for(
attr='region',
filter_value=self._keystone.region_name,
service_type=self._service_type,
endpoint_type=self._endpoint_type
)
except exceptions.EmptyCatalog:
LOG.error('Keystone is reporting an empty catalog.')
raise AuthException('Empty keystone catalog.')
except exceptions.EndpointNotFound:
LOG.error('Barbican endpoint not found in keystone catalog.')
raise AuthException('Barbican endpoint not found.')
return self._barbican_url
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