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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack LLC
#
# 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.
"""Main entry point into the Policy service."""
from keystone.common import dependency
from keystone.common import manager
from keystone import config
from keystone import exception
CONF = config.CONF
@dependency.provider('policy_api')
class Manager(manager.Manager):
"""Default pivot point for the Policy backend.
See :mod:`keystone.common.manager.Manager` for more details on how this
dynamically calls the backend.
"""
def __init__(self):
super(Manager, self).__init__(CONF.policy.driver)
def get_policy(self, policy_id):
try:
return self.driver.get_policy(policy_id)
except exception.NotFound:
raise exception.PolicyNotFound(policy_id=policy_id)
def update_policy(self, policy_id, policy):
if 'id' in policy and policy_id != policy['id']:
raise exception.ValidationError('Cannot change policy ID')
try:
return self.driver.update_policy(policy_id, policy)
except exception.NotFound:
raise exception.PolicyNotFound(policy_id=policy_id)
def delete_policy(self, policy_id):
try:
return self.driver.delete_policy(policy_id)
except exception.NotFound:
raise exception.PolicyNotFound(policy_id=policy_id)
class Driver(object):
def enforce(self, context, credentials, action, target):
"""Verify that a user is authorized to perform action.
For more information on a full implementation of this see:
`keystone.common.policy.enforce`.
"""
raise exception.NotImplemented()
def create_policy(self, policy_id, policy):
"""Store a policy blob.
:raises: keystone.exception.Conflict
"""
raise exception.NotImplemented()
def list_policies(self):
"""List all policies."""
raise exception.NotImplemented()
def get_policy(self, policy_id):
"""Retrieve a specific policy blob.
:raises: keystone.exception.PolicyNotFound
"""
raise exception.NotImplemented()
def update_policy(self, policy_id, policy):
"""Update a policy blob.
:raises: keystone.exception.PolicyNotFound
"""
raise exception.NotImplemented()
def delete_policy(self, policy_id):
"""Remove a policy blob.
:raises: keystone.exception.PolicyNotFound
"""
raise exception.NotImplemented()
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