Slawek Kaplonski
8460c3b964
Some of the resources, like e.g. QoS rules don't have tenant or project_id attribute as they belong to the project to which QoS policy (their parent) belongs to. Because of that we should get project id for such resources from their parent object instead of looking for it in its attributes. Related-Bug: #2022043 Change-Id: I3e6625eb237ad442ab904f59de5c2959d4090700
99 lines
4.0 KiB
Python
99 lines
4.0 KiB
Python
# Copyright (c) 2015 Mirantis, Inc.
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# All Rights Reserved.
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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 collections
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from neutron_lib import context
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from neutron_lib.db import api as db_api
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from neutron_lib import exceptions
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from oslo_log import log as logging
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from pecan import hooks
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from neutron import manager
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from neutron.pecan_wsgi.hooks import utils
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from neutron import quota
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from neutron.quota import resource_registry
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LOG = logging.getLogger(__name__)
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class QuotaEnforcementHook(hooks.PecanHook):
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priority = 130
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def before(self, state):
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collection = state.request.context.get('collection')
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resource = state.request.context.get('resource')
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items = state.request.context.get('resources')
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if state.request.method != 'POST' or not resource or not items:
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return
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plugin = manager.NeutronManager.get_plugin_for_resource(collection)
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parent_id = state.request.context.get('parent_id')
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parent_project_id = None
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if parent_id and any(not x.get('tenant_id') for x in items):
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parent_getter = getattr(
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plugin, 'get_%s' % utils.get_controller(state).parent)
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try:
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parent_project_id = parent_getter(
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context.get_admin_context(), parent_id).get('project_id')
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except exceptions.NotFound:
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pass
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# Store requested resource amounts grouping them by tenant
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deltas = collections.Counter(
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map(lambda x: x.get('tenant_id', parent_project_id), items))
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# Perform quota enforcement
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reservations = []
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neutron_context = state.request.context.get('neutron_context')
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for (tenant_id, delta) in deltas.items():
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try:
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reservation = quota.QUOTAS.make_reservation(
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neutron_context,
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tenant_id,
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{resource: delta},
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plugin)
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LOG.debug("Made reservation on behalf of %(tenant_id)s "
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"for: %(delta)s",
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{'tenant_id': tenant_id, 'delta': {resource: delta}})
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if reservation:
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reservations.append(reservation)
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except exceptions.QuotaResourceUnknown as e:
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# Quotas cannot be enforced on this resource
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LOG.debug(e)
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# Save the reservations in the request context so that they can be
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# retrieved in the 'after' hook
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state.request.context['reservations'] = reservations
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@db_api.retry_db_errors
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def after(self, state):
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neutron_context = state.request.context.get('neutron_context')
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if not neutron_context:
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return
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collection = state.request.context.get('collection')
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resource = state.request.context.get('resource')
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if state.request.method == 'GET' and collection:
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# resync on list operations to preserve behavior of old API
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resource_registry.resync_resource(
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neutron_context, resource, neutron_context.tenant_id)
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# Commit reservation(s)
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reservations = state.request.context.get('reservations') or []
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if not reservations and state.request.method != 'DELETE':
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return
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# Commit the reservation(s)
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for reservation in reservations:
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quota.QUOTAS.commit_reservation(
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neutron_context, reservation.reservation_id)
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resource_registry.set_resources_dirty(neutron_context)
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