129 lines
4.8 KiB
Python
129 lines
4.8 KiB
Python
# 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 fields
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from zun.db import api as dbapi
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from zun.objects import base
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@base.ZunObjectRegistry.register
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class Quota(base.ZunPersistentObject, base.ZunObject):
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# Version 1.0: Initial version
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# Version 1.1: Add uuid column
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# Version 1.2: Add destroy_all_by_project method
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VERSION = '1.2'
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fields = {
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'id': fields.IntegerField(),
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'project_id': fields.StringField(nullable=True),
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'resource': fields.StringField(),
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'hard_limit': fields.IntegerField(nullable=True),
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# NOTE(kiennt): By now, this field is only used for etcd. If using sql,
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# this field will be None.
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'uuid': fields.StringField(nullable=True),
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}
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@staticmethod
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def _from_db_object(quota, db_quota):
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"""Converts a database entity to a formal object"""
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for field in quota.fields:
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if field == 'uuid':
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continue
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setattr(quota, field, db_quota[field])
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quota.obj_reset_changes()
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return quota
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@base.remotable_classmethod
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def get(cls, context, project_id, resource):
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"""Find a quota based on project_id and resource
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:param project_id: the project id.
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:param context: security context.
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:param resource: the name of resource.
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:returns: a :class:`Quota` object.
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"""
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db_quota = dbapi.quota_get(context, project_id, resource)
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quota = Quota._from_db_object(cls(context), db_quota)
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return quota
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@base.remotable_classmethod
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def get_all(cls, context, project_id):
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"""Find all quotas associated with project
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:param context: security context.
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:param project_id: the project id.
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:returns: a dict
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"""
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return dbapi.quota_get_all_by_project(context, project_id)
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@base.remotable
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def create(self, context):
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"""Create a Quota record in the DB.
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:param context: security context. NOTE: This should only be
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used internally by the indirection api.
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Unfortunately, RPC requires context as the first
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argument, even though we don't use it.
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A context should be set when instantiating the
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object, e.g.: Quota(context)
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"""
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values = self.obj_get_changes()
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project_id = values.get('project_id')
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resource = values.get('resource')
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limit = values.get('hard_limit')
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db_quota = dbapi.quota_create(context, project_id, resource, limit)
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self._from_db_object(self, db_quota)
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@base.remotable_classmethod
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def destroy_all_by_project(cls, context, project_id):
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"""Destroy all quotas associated with a project.
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:param context: security context.
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:param project_id: the id of the project
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"""
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dbapi.quota_destroy_all_by_project(context, project_id)
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@base.remotable
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def destroy(self, context=None):
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"""Delete the Quota from the DB.
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:param context: security context. NOTE: This should only be
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used internally by the indirection api.
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Unfortunately, RPC requires context as the first
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argument, even though we don't use it.
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A context should be set when instantiating the
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object, e.g.: Quota(context)
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"""
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dbapi.quota_destroy(context, self.project_id, self.resource)
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self.obj_reset_changes()
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@base.remotable
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def update(self, context=None):
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"""Save updates to this Quota.
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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. NOTE: This should only be
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used internally by the indirection api.
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Unfortunately, RPC requires context as the first
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argument, even though we don't use it.
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A context should be set when instantiating the
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object, e.g.: Quota(context)
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"""
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updates = self.obj_get_changes()
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dbapi.quota_update(context, self.project_id, self.resource,
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updates.get('hard_limit'))
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self.obj_reset_changes()
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