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# Copyright 2013 OpenStack Foundation
#
# 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 keystone.common import dependency
from keystone.common import manager
from keystone import config
from keystone import exception
from keystone.openstack.common import log


CONF = config.CONF
LOG = log.getLogger(__name__)


@dependency.provider('example_api')
class ExampleManager(manager.Manager):
    """Example Manager.

    See :mod:`keystone.common.manager.Manager` for more details on
    how this dynamically calls the backend.

    """

    def __init__(self):
        super(ExampleManager, self).__init__(CONF.ExampleDriver.driver)


class ExampleDriver(object):
    """Interface description for Example driver."""

    def do_something(self, data):
        """Do something

        :param data: example data
        :type data: string
        :raises: keystone.exception,
        :returns: None.

        """
        raise exception.NotImplemented()