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# Copyright 2013 IBM Corp.
#
# 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 nova import db
from nova.objects import base
from nova.objects import utils
class InstanceInfoCache(base.NovaObject):
fields = {
'instance_uuid': str,
'network_info': utils.str_or_none,
}
@staticmethod
def _from_db_object(context, info_cache, db_obj):
info_cache.instance_uuid = db_obj['instance_uuid']
info_cache.network_info = db_obj['network_info']
info_cache.obj_reset_changes()
info_cache._context = context
return info_cache
@base.remotable_classmethod
def get_by_instance_uuid(cls, context, instance_uuid):
db_obj = db.instance_info_cache_get(context, instance_uuid)
return InstanceInfoCache._from_db_object(context, cls(), db_obj)
@base.remotable
def save(self, context):
if 'network_info' in self.obj_what_changed():
db.instance_info_cache_update(context, self.instance_uuid,
{'network_info': self.network_info})
self.obj_reset_changes()
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