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OpenStack Study: used_limits.py**** CubicPower OpenStack Study ****
# Copyright 2012 OpenStack Foundation # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. from cinder.api import extensions from cinder.api.openstack import wsgi from cinder import quota QUOTAS = quota.QUOTAS authorize = extensions.extension_authorizer('limits', 'used_limits')
**** CubicPower OpenStack Study **** class UsedLimitsController(wsgi.Controller): @wsgi.extends
**** CubicPower OpenStack Study **** def index(self, req, resp_obj): context = req.environ['cinder.context'] authorize(context) quotas = QUOTAS.get_project_quotas(context, context.project_id, usages=True) quota_map = { 'totalVolumesUsed': 'volumes', 'totalGigabytesUsed': 'gigabytes', 'totalSnapshotsUsed': 'snapshots', } used_limits = {} for display_name, quota in quota_map.iteritems(): if quota in quotas: used_limits[display_name] = quotas[quota]['in_use'] resp_obj.obj['limits']['absolute'].update(used_limits)
**** CubicPower OpenStack Study **** class Used_limits(extensions.ExtensionDescriptor): """Provide data on limited resources that are being used.""" name = "UsedLimits" alias = 'os-used-limits' namespace = "http://docs.openstack.org/volume/ext/used-limits/api/v1.1" updated = "2013-10-03T00:00:00+00:00"
**** CubicPower OpenStack Study **** def get_controller_extensions(self): controller = UsedLimitsController() extension = extensions.ControllerExtension(self, 'limits', controller) return [extension]
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