318 lines
13 KiB
Python
318 lines
13 KiB
Python
# Copyright 2017 SUSE Linux Gmbh
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# Copyright 2017 Huawei
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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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import copy
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import sqlalchemy
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from sqlalchemy.ext.hybrid import hybrid_property
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from oslo_db import exception as db_exception
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from keystone.common import driver_hints
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from keystone.common import sql
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from keystone import exception
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from keystone.i18n import _
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from keystone.limit.backends import base
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class RegisteredLimitModel(sql.ModelBase, sql.ModelDictMixin):
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__tablename__ = 'registered_limit'
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attributes = [
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'internal_id',
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'id',
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'service_id',
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'region_id',
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'resource_name',
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'default_limit',
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'description'
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]
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internal_id = sql.Column(sql.Integer, primary_key=True, nullable=False)
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id = sql.Column(sql.String(length=64), nullable=False, unique=True)
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service_id = sql.Column(sql.String(255),
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sql.ForeignKey('service.id'))
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region_id = sql.Column(sql.String(64),
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sql.ForeignKey('region.id'), nullable=True)
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resource_name = sql.Column(sql.String(255))
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default_limit = sql.Column(sql.Integer, nullable=False)
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description = sql.Column(sql.Text())
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def to_dict(self):
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ref = super(RegisteredLimitModel, self).to_dict()
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ref.pop('internal_id')
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return ref
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class LimitModel(sql.ModelBase, sql.ModelDictMixin):
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__tablename__ = 'limit'
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attributes = [
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'internal_id',
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'id',
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'project_id',
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'domain_id',
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'service_id',
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'region_id',
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'resource_name',
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'resource_limit',
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'description',
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'registered_limit_id'
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]
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internal_id = sql.Column(sql.Integer, primary_key=True, nullable=False)
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id = sql.Column(sql.String(length=64), nullable=False, unique=True)
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project_id = sql.Column(sql.String(64))
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domain_id = sql.Column(sql.String(64))
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resource_limit = sql.Column(sql.Integer, nullable=False)
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description = sql.Column(sql.Text())
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registered_limit_id = sql.Column(sql.String(64),
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sql.ForeignKey('registered_limit.id'))
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registered_limit = sqlalchemy.orm.relationship('RegisteredLimitModel')
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@hybrid_property
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def service_id(self):
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if self.registered_limit:
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return self.registered_limit.service_id
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return None
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@service_id.expression
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def service_id(self):
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return RegisteredLimitModel.service_id
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@hybrid_property
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def region_id(self):
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if self.registered_limit:
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return self.registered_limit.region_id
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return None
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@region_id.expression
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def region_id(self):
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return RegisteredLimitModel.region_id
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@hybrid_property
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def resource_name(self):
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if self.registered_limit:
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return self.registered_limit.resource_name
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return self._resource_name
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@resource_name.expression
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def resource_name(self):
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return RegisteredLimitModel.resource_name
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def to_dict(self):
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ref = super(LimitModel, self).to_dict()
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if self.registered_limit:
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ref['service_id'] = self.registered_limit.service_id
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ref['region_id'] = self.registered_limit.region_id
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ref['resource_name'] = self.registered_limit.resource_name
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ref.pop('internal_id')
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ref.pop('registered_limit_id')
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return ref
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class UnifiedLimit(base.UnifiedLimitDriverBase):
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def _check_unified_limit_unique(self, unified_limit,
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is_registered_limit=True):
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# Ensure the new created or updated unified limit won't break the
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# current reference between registered limit and limit. i.e. We should
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# ensure that there is no duplicate entry.
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hints = driver_hints.Hints()
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if is_registered_limit:
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hints.add_filter('service_id', unified_limit['service_id'])
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hints.add_filter('resource_name', unified_limit['resource_name'])
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hints.add_filter('region_id', unified_limit.get('region_id'))
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with sql.session_for_read() as session:
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query = session.query(RegisteredLimitModel)
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unified_limits = sql.filter_limit_query(RegisteredLimitModel,
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query,
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hints).all()
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else:
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hints.add_filter('registered_limit_id',
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unified_limit['registered_limit_id'])
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is_project_limit = (True if unified_limit.get('project_id')
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else False)
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if is_project_limit:
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hints.add_filter('project_id', unified_limit['project_id'])
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else:
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hints.add_filter('domain_id', unified_limit['domain_id'])
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with sql.session_for_read() as session:
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query = session.query(LimitModel)
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unified_limits = sql.filter_limit_query(LimitModel, query,
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hints).all()
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if unified_limits:
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msg = _('Duplicate entry')
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limit_type = 'registered_limit' if is_registered_limit else 'limit'
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raise exception.Conflict(type=limit_type, details=msg)
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def _check_referenced_limit_reference(self, registered_limit):
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# When updating or deleting a registered limit, we should ensure there
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# is no reference limit.
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with sql.session_for_read() as session:
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limits = session.query(LimitModel).filter_by(
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registered_limit_id=registered_limit['id'])
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if limits.all():
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raise exception.RegisteredLimitError(id=registered_limit.id)
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@sql.handle_conflicts(conflict_type='registered_limit')
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def create_registered_limits(self, registered_limits):
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with sql.session_for_write() as session:
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new_registered_limits = []
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for registered_limit in registered_limits:
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self._check_unified_limit_unique(registered_limit)
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ref = RegisteredLimitModel.from_dict(registered_limit)
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session.add(ref)
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new_registered_limits.append(ref.to_dict())
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return new_registered_limits
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@sql.handle_conflicts(conflict_type='registered_limit')
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def update_registered_limit(self, registered_limit_id, registered_limit):
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try:
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with sql.session_for_write() as session:
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ref = self._get_registered_limit(session, registered_limit_id)
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self._check_referenced_limit_reference(ref)
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old_dict = ref.to_dict()
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old_dict.update(registered_limit)
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if (registered_limit.get('service_id') or
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'region_id' in registered_limit or
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registered_limit.get('resource_name')):
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self._check_unified_limit_unique(old_dict)
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new_registered_limit = RegisteredLimitModel.from_dict(
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old_dict)
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for attr in registered_limit:
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if attr != 'id':
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setattr(ref, attr, getattr(new_registered_limit,
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attr))
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return ref.to_dict()
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except db_exception.DBReferenceError:
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raise exception.RegisteredLimitError(id=registered_limit_id)
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@driver_hints.truncated
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def list_registered_limits(self, hints):
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with sql.session_for_read() as session:
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registered_limits = session.query(RegisteredLimitModel)
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registered_limits = sql.filter_limit_query(RegisteredLimitModel,
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registered_limits,
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hints)
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return [s.to_dict() for s in registered_limits]
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def _get_registered_limit(self, session, registered_limit_id):
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query = session.query(RegisteredLimitModel).filter_by(
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id=registered_limit_id)
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ref = query.first()
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if ref is None:
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raise exception.RegisteredLimitNotFound(id=registered_limit_id)
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return ref
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def get_registered_limit(self, registered_limit_id):
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with sql.session_for_read() as session:
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return self._get_registered_limit(
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session, registered_limit_id).to_dict()
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def delete_registered_limit(self, registered_limit_id):
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try:
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with sql.session_for_write() as session:
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ref = self._get_registered_limit(session,
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registered_limit_id)
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self._check_referenced_limit_reference(ref)
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session.delete(ref)
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except db_exception.DBReferenceError:
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raise exception.RegisteredLimitError(id=registered_limit_id)
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def _check_and_fill_registered_limit_id(self, limit):
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# Make sure there is a referenced registered limit first. Then add
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# the registered limit id to the new created limit.
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hints = driver_hints.Hints()
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limit_copy = copy.deepcopy(limit)
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hints.add_filter('service_id', limit_copy.pop('service_id'))
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hints.add_filter('resource_name', limit_copy.pop('resource_name'))
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hints.add_filter('region_id', limit_copy.pop('region_id', None))
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with sql.session_for_read() as session:
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registered_limits = session.query(RegisteredLimitModel)
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registered_limits = sql.filter_limit_query(
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RegisteredLimitModel, registered_limits, hints)
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reg_limits = registered_limits.all()
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if not reg_limits:
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raise exception.NoLimitReference
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limit_copy['registered_limit_id'] = reg_limits[0]['id']
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return limit_copy
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@sql.handle_conflicts(conflict_type='limit')
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def create_limits(self, limits):
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try:
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with sql.session_for_write() as session:
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new_limits = []
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for limit in limits:
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target = self._check_and_fill_registered_limit_id(limit)
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self._check_unified_limit_unique(target,
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is_registered_limit=False)
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ref = LimitModel.from_dict(target)
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session.add(ref)
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new_limit = ref.to_dict()
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new_limit['service_id'] = limit['service_id']
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new_limit['region_id'] = limit.get('region_id')
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new_limit['resource_name'] = limit['resource_name']
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new_limits.append(new_limit)
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return new_limits
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except db_exception.DBReferenceError:
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raise exception.NoLimitReference()
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@sql.handle_conflicts(conflict_type='limit')
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def update_limit(self, limit_id, limit):
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with sql.session_for_write() as session:
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ref = self._get_limit(session, limit_id)
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if limit.get('resource_limit'):
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ref.resource_limit = limit['resource_limit']
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if limit.get('description'):
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ref.description = limit['description']
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return ref.to_dict()
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@driver_hints.truncated
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def list_limits(self, hints):
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with sql.session_for_read() as session:
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query = session.query(LimitModel).outerjoin(RegisteredLimitModel)
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limits = sql.filter_limit_query(LimitModel, query, hints)
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return [limit.to_dict() for limit in limits]
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def _get_limit(self, session, limit_id):
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query = session.query(LimitModel).filter_by(id=limit_id)
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ref = query.first()
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if ref is None:
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raise exception.LimitNotFound(id=limit_id)
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return ref
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def get_limit(self, limit_id):
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with sql.session_for_read() as session:
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return self._get_limit(session,
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limit_id).to_dict()
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def delete_limit(self, limit_id):
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with sql.session_for_write() as session:
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ref = self._get_limit(session,
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limit_id)
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session.delete(ref)
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def delete_limits_for_project(self, project_id):
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limit_ids = []
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with sql.session_for_write() as session:
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query = session.query(LimitModel)
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query = query.filter_by(project_id=project_id)
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for limit in query.all():
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limit_ids.append(limit.id)
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query.delete()
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return limit_ids
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