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magnum/magnum/objects/base.py

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3.0 KiB

# 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.
"""Magnum common internal object model"""
from oslo_log import log as logging
from oslo_versionedobjects import base as ovoo_base
from oslo_versionedobjects import fields as ovoo_fields
LOG = logging.getLogger('object')
remotable_classmethod = ovoo_base.remotable_classmethod
remotable = ovoo_base.remotable
class MagnumObjectRegistry(ovoo_base.VersionedObjectRegistry):
pass
class MagnumObject(ovoo_base.VersionedObject):
"""Base class and object factory.
This forms the base of all objects that can be remoted or instantiated
via RPC. Simply defining a class that inherits from this base class
will make it remotely instantiatable. Objects should implement the
necessary "get" classmethod routines as well as "save" object methods
as appropriate.
"""
OBJ_SERIAL_NAMESPACE = 'magnum_object'
OBJ_PROJECT_NAMESPACE = 'magnum'
def as_dict(self):
return {k: getattr(self, k)
for k in self.fields
if hasattr(self, k)}
class MagnumObjectDictCompat(ovoo_base.VersionedObjectDictCompat):
pass
class MagnumPersistentObject(object):
"""Mixin class for Persistent objects.
This adds the fields that we use in common for all persistent objects.
"""
fields = {
'created_at': ovoo_fields.DateTimeField(nullable=True),
'updated_at': ovoo_fields.DateTimeField(nullable=True),
}
class MagnumObjectIndirectionAPI(ovoo_base.VersionedObjectIndirectionAPI):
def __init__(self):
super(MagnumObjectIndirectionAPI, self).__init__()
from magnum.conductor import api as conductor_api
self._conductor = conductor_api.API()
def object_action(self, context, objinst, objmethod, args, kwargs):
return self._conductor.object_action(context, objinst, objmethod,
args, kwargs)
def object_class_action(self, context, objname, objmethod, objver,
args, kwargs):
return self._conductor.object_class_action(context, objname, objmethod,
objver, args, kwargs)
def object_backport(self, context, objinst, target_version):
return self._conductor.object_backport(context, objinst,
target_version)
class MagnumObjectSerializer(ovoo_base.VersionedObjectSerializer):
# Base class to use for object hydration
OBJ_BASE_CLASS = MagnumObject