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OpenStack Study: legacy.py**** CubicPower OpenStack Study ****
# Copyright 2012 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 import exception from keystone.openstack.common import versionutils
**** CubicPower OpenStack Study **** class DictKvs(dict):
**** CubicPower OpenStack Study **** def get(self, key, default=None): try: if isinstance(self[key], dict): return self[key].copy() else: return self[key][:] except KeyError: if default is not None: return default raise exception.NotFound(target=key)
**** CubicPower OpenStack Study **** def set(self, key, value): if isinstance(value, dict): self[key] = value.copy() else: self[key] = value[:]
**** CubicPower OpenStack Study **** def delete(self, key): """Deletes an item, returning True on success, False otherwise.""" try: del self[key] except KeyError: raise exception.NotFound(target=key) INMEMDB = DictKvs()
**** CubicPower OpenStack Study **** class Base(object): @versionutils.deprecated(versionutils.deprecated.ICEHOUSE, in_favor_of='keystone.common.kvs.KeyValueStore', remove_in=+1, what='keystone.common.kvs.Base')
**** CubicPower OpenStack Study **** def __init__(self, db=None): if db is None: db = INMEMDB elif isinstance(db, DictKvs): db = db elif isinstance(db, dict): db = DictKvs(db) self.db = db
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