97 lines
3.9 KiB
Python
97 lines
3.9 KiB
Python
# Copyright 2016 Huawei Technologies Co.,LTD.
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# All Rights Reserved.
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#
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_versionedobjects import base as object_base
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from mogan.db import api as dbapi
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from mogan.objects import base
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from mogan.objects import fields as object_fields
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@base.MoganObjectRegistry.register
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class Instance(base.MoganObject, object_base.VersionedObjectDictCompat):
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# Version 1.0: Initial version
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VERSION = '1.0'
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dbapi = dbapi.get_instance()
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fields = {
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'id': object_fields.IntegerField(),
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'uuid': object_fields.UUIDField(nullable=True),
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'name': object_fields.StringField(nullable=True),
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'description': object_fields.StringField(nullable=True),
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'project_id': object_fields.UUIDField(nullable=True),
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'user_id': object_fields.UUIDField(nullable=True),
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'status': object_fields.StringField(nullable=True),
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'power_state': object_fields.StringField(nullable=True),
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'instance_type_uuid': object_fields.UUIDField(nullable=True),
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'availability_zone': object_fields.StringField(nullable=True),
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'image_uuid': object_fields.UUIDField(nullable=True),
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'network_info': object_fields.FlexibleDictField(nullable=True),
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'node_uuid': object_fields.UUIDField(nullable=True),
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'launched_at': object_fields.DateTimeField(nullable=True),
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'extra': object_fields.FlexibleDictField(nullable=True),
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'deleted': object_fields.BooleanField(default=False),
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'deleted_at': object_fields.DateTimeField(nullable=True),
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}
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@staticmethod
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def _from_db_object_list(db_objects, cls, context):
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"""Converts a list of database entities to a list of formal objects."""
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return [Instance._from_db_object(cls(context), obj)
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for obj in db_objects]
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@classmethod
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def list(cls, context, project_only=False):
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"""Return a list of Instance objects."""
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db_instances = cls.dbapi.instance_get_all(context,
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project_only=project_only)
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return Instance._from_db_object_list(db_instances, cls, context)
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@classmethod
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def get(cls, context, uuid):
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"""Find a instance and return a Instance object."""
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db_instance = cls.dbapi.instance_get(context, uuid)
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instance = Instance._from_db_object(cls(context), db_instance)
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return instance
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def create(self, context=None):
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"""Create a Instance record in the DB."""
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values = self.obj_get_changes()
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# Since we need to avoid passing False down to the DB layer
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# (which uses an integer), we can always default it to zero here.
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values['deleted'] = 0
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db_instance = self.dbapi.instance_create(context, values)
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self._from_db_object(self, db_instance)
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def destroy(self, context=None):
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"""Delete the Instance from the DB."""
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self.dbapi.instance_destroy(context, self.uuid)
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self.obj_reset_changes()
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def save(self, context=None):
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"""Save updates to this Instance."""
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updates = self.obj_get_changes()
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self.dbapi.instance_update(context, self.uuid, updates)
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self.obj_reset_changes()
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def refresh(self, context=None):
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"""Refresh the object by re-fetching from the DB."""
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current = self.__class__.get(context, self.uuid)
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self.obj_refresh(current)
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self.obj_reset_changes()
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