126 lines
4.1 KiB
Python
126 lines
4.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack LLC.
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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 webob
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from cinder.api import extensions
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from cinder.api.openstack import wsgi
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from cinder.api import xmlutil
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from cinder import db
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from cinder.db.sqlalchemy import api as sqlalchemy_api
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from cinder import exception
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from cinder import quota
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QUOTAS = quota.QUOTAS
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authorize_update = extensions.extension_authorizer('compute', 'quotas:update')
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authorize_show = extensions.extension_authorizer('compute', 'quotas:show')
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class QuotaTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('quota_set', selector='quota_set')
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root.set('id')
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for resource in QUOTAS.resources:
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elem = xmlutil.SubTemplateElement(root, resource)
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elem.text = resource
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return xmlutil.MasterTemplate(root, 1)
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class QuotaSetsController(object):
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def _format_quota_set(self, project_id, quota_set):
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"""Convert the quota object to a result dict"""
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result = dict(id=str(project_id))
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for resource in QUOTAS.resources:
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result[resource] = quota_set[resource]
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return dict(quota_set=result)
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def _validate_quota_limit(self, limit):
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# NOTE: -1 is a flag value for unlimited
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if limit < -1:
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msg = _("Quota limit must be -1 or greater.")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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def _get_quotas(self, context, id, usages=False):
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values = QUOTAS.get_project_quotas(context, id, usages=usages)
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if usages:
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return values
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else:
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return dict((k, v['limit']) for k, v in values.items())
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@wsgi.serializers(xml=QuotaTemplate)
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def show(self, req, id):
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context = req.environ['cinder.context']
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authorize_show(context)
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try:
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sqlalchemy_api.authorize_project_context(context, id)
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except exception.NotAuthorized:
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raise webob.exc.HTTPForbidden()
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return self._format_quota_set(id, self._get_quotas(context, id))
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@wsgi.serializers(xml=QuotaTemplate)
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def update(self, req, id, body):
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context = req.environ['cinder.context']
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authorize_update(context)
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project_id = id
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for key in body['quota_set'].keys():
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if key in QUOTAS:
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value = int(body['quota_set'][key])
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self._validate_quota_limit(value)
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try:
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db.quota_update(context, project_id, key, value)
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except exception.ProjectQuotaNotFound:
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db.quota_create(context, project_id, key, value)
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except exception.AdminRequired:
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raise webob.exc.HTTPForbidden()
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return {'quota_set': self._get_quotas(context, id)}
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@wsgi.serializers(xml=QuotaTemplate)
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def defaults(self, req, id):
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context = req.environ['cinder.context']
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authorize_show(context)
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return self._format_quota_set(id, QUOTAS.get_defaults(context))
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class Quotas(extensions.ExtensionDescriptor):
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"""Quotas management support"""
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name = "Quotas"
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alias = "os-quota-sets"
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namespace = "http://docs.openstack.org/compute/ext/quotas-sets/api/v1.1"
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updated = "2011-08-08T00:00:00+00:00"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension('os-quota-sets',
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QuotaSetsController(),
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member_actions={'defaults': 'GET'})
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resources.append(res)
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return resources
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