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# 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.
from keystone.common import sql
from keystone import exception
from keystone.policy.backends import rules
class PolicyModel(sql.ModelBase, sql.DictBase):
__tablename__ = 'policy'
attributes = ['id', 'blob', 'type']
id = sql.Column(sql.String(64), primary_key=True)
blob = sql.Column(sql.JsonBlob(), nullable=False)
type = sql.Column(sql.String(255), nullable=False)
extra = sql.Column(sql.JsonBlob())
class Policy(rules.Policy):
@sql.handle_conflicts(conflict_type='policy')
def create_policy(self, policy_id, policy):
with sql.session_for_write() as session:
ref = PolicyModel.from_dict(policy)
session.add(ref)
return ref.to_dict()
def list_policies(self):
with sql.session_for_read() as session:
refs = session.query(PolicyModel).all()
return [ref.to_dict() for ref in refs]
def _get_policy(self, session, policy_id):
"""Private method to get a policy model object (NOT a dictionary)."""
ref = session.query(PolicyModel).get(policy_id)
if not ref:
raise exception.PolicyNotFound(policy_id=policy_id)
return ref
def get_policy(self, policy_id):
with sql.session_for_read() as session:
return self._get_policy(session, policy_id).to_dict()
@sql.handle_conflicts(conflict_type='policy')
def update_policy(self, policy_id, policy):
with sql.session_for_write() as session:
ref = self._get_policy(session, policy_id)
old_dict = ref.to_dict()
old_dict.update(policy)
new_policy = PolicyModel.from_dict(old_dict)
ref.blob = new_policy.blob
ref.type = new_policy.type
ref.extra = new_policy.extra
return ref.to_dict()
def delete_policy(self, policy_id):
with sql.session_for_write() as session:
ref = self._get_policy(session, policy_id)
session.delete(ref)
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