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# Copyright 2012 OpenStack Foundation
# All Rights Reserved.
#
# 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.
import webob
from nova.api.openstack import extensions
from nova.api.openstack import wsgi
from nova.api.openstack import xmlutil
import nova.context
from nova import db
from nova import exception
from nova.i18n import _
from nova import quota
from nova import utils
QUOTAS = quota.QUOTAS
authorize = extensions.extension_authorizer('compute', 'quota_classes')
class QuotaClassTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('quota_class_set',
selector='quota_class_set')
root.set('id')
for resource in QUOTAS.resources:
elem = xmlutil.SubTemplateElement(root, resource)
elem.text = resource
return xmlutil.MasterTemplate(root, 1)
class QuotaClassSetsController(wsgi.Controller):
def _format_quota_set(self, quota_class, quota_set):
"""Convert the quota object to a result dict."""
result = dict(id=str(quota_class))
for resource in QUOTAS.resources:
result[resource] = quota_set[resource]
return dict(quota_class_set=result)
@wsgi.serializers(xml=QuotaClassTemplate)
def show(self, req, id):
context = req.environ['nova.context']
authorize(context)
try:
nova.context.authorize_quota_class_context(context, id)
return self._format_quota_set(id,
QUOTAS.get_class_quotas(context, id))
except exception.Forbidden:
raise webob.exc.HTTPForbidden()
@wsgi.serializers(xml=QuotaClassTemplate)
def update(self, req, id, body):
context = req.environ['nova.context']
authorize(context)
quota_class = id
if not self.is_valid_body(body, 'quota_class_set'):
msg = _("quota_class_set not specified")
raise webob.exc.HTTPBadRequest(explanation=msg)
quota_class_set = body['quota_class_set']
for key in quota_class_set.keys():
if key in QUOTAS:
try:
value = utils.validate_integer(
body['quota_class_set'][key], key)
except exception.InvalidInput as e:
raise webob.exc.HTTPBadRequest(
explanation=e.format_message())
try:
db.quota_class_update(context, quota_class, key, value)
except exception.QuotaClassNotFound:
db.quota_class_create(context, quota_class, key, value)
except exception.AdminRequired:
raise webob.exc.HTTPForbidden()
return {'quota_class_set': QUOTAS.get_class_quotas(context,
quota_class)}
class Quota_classes(extensions.ExtensionDescriptor):
"""Quota classes management support."""
name = "QuotaClasses"
alias = "os-quota-class-sets"
namespace = ("http://docs.openstack.org/compute/ext/"
"quota-classes-sets/api/v1.1")
updated = "2012-03-12T00:00:00Z"
def get_resources(self):
resources = []
res = extensions.ResourceExtension('os-quota-class-sets',
QuotaClassSetsController())
resources.append(res)
return resources
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