100 lines
3.5 KiB
Python
100 lines
3.5 KiB
Python
# Copyright (c) 2013 Red Hat, 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.
|
|
|
|
from keystoneclient.v2_0 import client as ksclient
|
|
|
|
from zaqarclient.auth import base
|
|
|
|
|
|
# NOTE(flaper87): Some of the code below
|
|
# was brought to you by the very unique
|
|
# work of ceilometerclient.
|
|
class KeystoneAuth(base.AuthBackend):
|
|
"""Keystone Auth backend
|
|
|
|
:params conf: A dictionary with Keystone's
|
|
custom parameters:
|
|
- os_username
|
|
- os_password
|
|
- os_project_id
|
|
- os_project_name
|
|
- os_auth_url
|
|
- os_auth_token
|
|
- os_region_name
|
|
- os_service_type
|
|
- os_service_type
|
|
- os_endpoint_type
|
|
:type conf: `dict`
|
|
"""
|
|
|
|
def _get_ksclient(self, **kwargs):
|
|
"""Get an endpoint and auth token from Keystone.
|
|
|
|
:param kwargs: keyword args containing credentials:
|
|
* username: name of user
|
|
* password: user's password
|
|
* auth_url: endpoint to authenticate against
|
|
* insecure: allow insecure SSL (no cert verification)
|
|
* project_{name|id}: name or ID of project
|
|
"""
|
|
return ksclient.Client(**kwargs)
|
|
|
|
def _get_endpoint(self, client, **extra):
|
|
"""Get an endpoint using the provided keystone client."""
|
|
return client.service_catalog.url_for(**extra)
|
|
|
|
def authenticate(self, api_version, request):
|
|
"""Get an authtenticated client, based on the credentials
|
|
in the keyword args.
|
|
|
|
:param api_version: the API version to use ('1' or '2')
|
|
:param request: The request spec instance to modify with
|
|
the auth information.
|
|
"""
|
|
|
|
token = self.conf.get('os_auth_token')
|
|
if not token or not request.endpoint:
|
|
# NOTE(flaper87): Lets assume all the
|
|
# required information was provided
|
|
# either through env variables or CLI
|
|
# params. Let keystoneclient fail otherwise.
|
|
ks_kwargs = {
|
|
'username': self.conf.get('os_username'),
|
|
'password': self.conf.get('os_password'),
|
|
'tenant_id': self.conf.get('os_project_id'),
|
|
'tenant_name': self.conf.get('os_project_name'),
|
|
'auth_url': self.conf.get('os_auth_url'),
|
|
'insecure': self.conf.get('insecure'),
|
|
}
|
|
|
|
_ksclient = self._get_ksclient(**ks_kwargs)
|
|
|
|
if not token:
|
|
token = _ksclient.auth_token
|
|
|
|
if not request.endpoint:
|
|
extra = {
|
|
'service_type': self.conf.get('os_service_type',
|
|
'queuing'),
|
|
'endpoint_type': self.conf.get('os_endpoint_type',
|
|
'publicURL'),
|
|
}
|
|
request.endpoint = self._get_endpoint(_ksclient, **extra)
|
|
|
|
# NOTE(flaper87): Update the request spec
|
|
# with the final token.
|
|
request.headers['X-Auth-Token'] = token
|
|
return request
|