6dad8c021b
cleanup subclassing on NovaObjectDictCompat ih nova/objects/quota.py Due to the exhaustive nature of changes, the cleanup is done one object at a time. There shall be more patches to follow for other objects. Related to blueprint liberty-objects Change-Id: I24f61c16f84b3fed18a8a0bbb5d8e52d22fba440
157 lines
5.5 KiB
Python
157 lines
5.5 KiB
Python
# Copyright 2013 Rackspace Hosting.
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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 nova import db
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from nova.objects import base
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from nova.objects import fields
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from nova import quota
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def ids_from_instance(context, instance):
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if (context.is_admin and
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context.project_id != instance['project_id']):
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project_id = instance['project_id']
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else:
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project_id = context.project_id
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if context.user_id != instance['user_id']:
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user_id = instance['user_id']
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else:
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user_id = context.user_id
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return project_id, user_id
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# TODO(lyj): This method needs to be cleaned up once the
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# ids_from_instance helper method is renamed or some common
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# method is added for objects.quotas.
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def ids_from_security_group(context, security_group):
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return ids_from_instance(context, security_group)
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# TODO(PhilD): This method needs to be cleaned up once the
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# ids_from_instance helper method is renamed or some common
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# method is added for objects.quotas.
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def ids_from_server_group(context, server_group):
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return ids_from_instance(context, server_group)
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@base.NovaObjectRegistry.register
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class Quotas(base.NovaObject):
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# Version 1.0: initial version
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# Version 1.1: Added create_limit() and update_limit()
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# Version 1.2: Added limit_check() and count()
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VERSION = '1.2'
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fields = {
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'reservations': fields.ListOfStringsField(nullable=True),
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'project_id': fields.StringField(nullable=True),
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'user_id': fields.StringField(nullable=True),
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}
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def __init__(self, *args, **kwargs):
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super(Quotas, self).__init__(*args, **kwargs)
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# Set up defaults.
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self.reservations = []
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self.project_id = None
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self.user_id = None
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self.obj_reset_changes()
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@classmethod
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def from_reservations(cls, context, reservations, instance=None):
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"""Transitional for compatibility."""
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if instance is None:
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project_id = None
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user_id = None
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else:
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project_id, user_id = ids_from_instance(context, instance)
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quotas = cls()
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quotas._context = context
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quotas.reservations = reservations
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quotas.project_id = project_id
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quotas.user_id = user_id
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quotas.obj_reset_changes()
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return quotas
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@base.remotable
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def reserve(self, expire=None, project_id=None, user_id=None,
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**deltas):
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reservations = quota.QUOTAS.reserve(self._context, expire=expire,
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project_id=project_id,
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user_id=user_id,
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**deltas)
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self.reservations = reservations
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self.project_id = project_id
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self.user_id = user_id
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self.obj_reset_changes()
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@base.remotable
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def commit(self):
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if not self.reservations:
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return
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quota.QUOTAS.commit(self._context, self.reservations,
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project_id=self.project_id,
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user_id=self.user_id)
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self.reservations = None
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self.obj_reset_changes()
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@base.remotable
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def rollback(self):
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"""Rollback quotas."""
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if not self.reservations:
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return
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quota.QUOTAS.rollback(self._context, self.reservations,
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project_id=self.project_id,
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user_id=self.user_id)
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self.reservations = None
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self.obj_reset_changes()
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@base.remotable_classmethod
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def limit_check(cls, context, project_id=None, user_id=None, **values):
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"""Check quota limits."""
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return quota.QUOTAS.limit_check(
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context, project_id=project_id, user_id=user_id, **values)
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@base.remotable_classmethod
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def count(cls, context, resource, *args, **kwargs):
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"""Count a resource."""
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return quota.QUOTAS.count(
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context, resource, *args, **kwargs)
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@base.remotable_classmethod
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def create_limit(cls, context, project_id, resource, limit, user_id=None):
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# NOTE(danms,comstud): Quotas likely needs an overhaul and currently
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# doesn't map very well to objects. Since there is quite a bit of
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# logic in the db api layer for this, just pass this through for now.
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db.quota_create(context, project_id, resource, limit, user_id=user_id)
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@base.remotable_classmethod
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def update_limit(cls, context, project_id, resource, limit, user_id=None):
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# NOTE(danms,comstud): Quotas likely needs an overhaul and currently
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# doesn't map very well to objects. Since there is quite a bit of
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# logic in the db api layer for this, just pass this through for now.
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db.quota_update(context, project_id, resource, limit, user_id=user_id)
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@base.NovaObjectRegistry.register
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class QuotasNoOp(Quotas):
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def reserve(context, expire=None, project_id=None, user_id=None,
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**deltas):
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pass
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def commit(self, context=None):
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pass
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def rollback(self, context=None):
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pass
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