Files
python-keystoneclient/keystoneclient/auth/base.py
Jamie Lennox 96267731ec Create Authentication Plugins
Provides the framework for creating authentication plugins and using
them from a session object.

To allow this system to co-exist with the original client there is a bit
of a hack. The client object itself is now also an authentication
plugin, that supports the original client pattern. If a client is
created without a session object then that session object uses the
client as it's authentication plugin.

Change-Id: I682c8dcd3705148aaa804a91f4ed48a5b74bdc12
blueprint: auth-plugins
2014-02-04 14:29:15 +10:00

39 lines
1.3 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# 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 abc
import six
@six.add_metaclass(abc.ABCMeta)
class BaseAuthPlugin(object):
"""The basic structure of an authentication plugin."""
@abc.abstractmethod
def get_token(self, session, **kwargs):
"""Obtain a token.
How the token is obtained is up to the plugin. If it is still valid
it may be re-used, retrieved from cache or invoke an authentication
request against a server.
There are no required kwargs. They are passed directly to the auth
plugin and they are implementation specific.
Returning None will indicate that no token was able to be retrieved.
:param session: A session object so the plugin can make HTTP calls.
:return string: A token to use.
"""