85 lines
2.7 KiB
Python
85 lines
2.7 KiB
Python
# coding=utf-8
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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 ironic.db import api as dbapi
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from ironic.objects import base
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from ironic.objects import utils
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class Chassis(base.IronicObject):
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dbapi = dbapi.get_instance()
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fields = {
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'id': int,
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'uuid': utils.str_or_none,
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'extra': utils.dict_or_none,
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'description': utils.str_or_none,
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}
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@staticmethod
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def _from_db_object(chassis, db_chassis):
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"""Converts a database entity to a formal :class:`Chassis` object.
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:param chassis: An object of :class:`Chassis`.
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:param db_chassis: A DB model of a chassis.
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:return: a :class:`Chassis` object.
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"""
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for field in chassis.fields:
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chassis[field] = db_chassis[field]
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chassis.obj_reset_changes()
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return chassis
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@base.remotable_classmethod
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def get_by_uuid(cls, context, uuid=None):
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"""Find a chassis based on uuid and return a :class:`Chassis` object.
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:param uuid: the uuid of a chassis.
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:param context: Security context
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:returns: a :class:`Chassis` object.
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"""
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db_chassis = cls.dbapi.get_chassis(uuid)
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return Chassis._from_db_object(cls(), db_chassis)
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@base.remotable
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def save(self, context):
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"""Save updates to this Chassis.
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Updates will be made column by column based on the result
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of self.what_changed().
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:param context: Security context
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"""
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updates = self.obj_get_changes()
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self.dbapi.update_chassis(self.uuid, updates)
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self.obj_reset_changes()
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@base.remotable
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def refresh(self, context):
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"""Loads and applies updates for this Chassis.
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Loads a :class:`Chassis` with the same uuid from the database and
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checks for updated attributes. Updates are applied from
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the loaded chassis column by column, if there are any updates.
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:param context: Security context
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"""
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current = self.__class__.get_by_uuid(context, uuid=self.uuid)
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for field in self.fields:
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if (hasattr(self, base.get_attrname(field)) and
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self[field] != current[field]):
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self[field] = current[field]
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