# 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 keystoneauth1 import plugin


class Token(plugin.BaseAuthPlugin):
    """A provider that will always use the given token and endpoint.

    This is really only useful for testing and in certain CLI cases where you
    have a known endpoint and admin token that you want to use.
    """

    def __init__(self, endpoint, token):
        # NOTE(jamielennox): endpoint is reserved for when plugins
        # can be used to provide that information
        self.endpoint = endpoint
        self.token = token

    def get_token(self, session):
        return self.token

    def get_endpoint(self, session, **kwargs):
        """Return the supplied endpoint.

        Using this plugin the same endpoint is returned regardless of the
        parameters passed to the plugin.
        """
        return self.endpoint

    def get_auth_ref(self, session, **kwargs):
        """Return the authentication reference of an auth plugin.

        :param session: A session object to be used for communication
        :type session: keystoneauth1.session.session
        """
        # token plugin does not have an auth ref, because it's a
        # "static" authentication using a pre-existing token.
        return None