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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 Netease, LLC.
# 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.
"""The Extended Availability Zone Status API extension."""
from nova.api.openstack import extensions
from nova.api.openstack import wsgi
from nova.api.openstack import xmlutil
from nova import availability_zones
authorize = extensions.soft_extension_authorizer('compute',
'extended_availability_zone')
class ExtendedAZController(wsgi.Controller):
def _extend_server(self, context, server, instance):
key = "%s:availability_zone" % Extended_availability_zone.alias
server[key] = availability_zones.get_instance_availability_zone(
context, instance)
@wsgi.extends
def show(self, req, resp_obj, id):
context = req.environ['nova.context']
if authorize(context):
resp_obj.attach(xml=ExtendedAZTemplate())
server = resp_obj.obj['server']
db_instance = req.get_db_instance(server['id'])
self._extend_server(context, server, db_instance)
@wsgi.extends
def detail(self, req, resp_obj):
context = req.environ['nova.context']
if authorize(context):
resp_obj.attach(xml=ExtendedAZsTemplate())
servers = list(resp_obj.obj['servers'])
for server in servers:
db_instance = req.get_db_instance(server['id'])
self._extend_server(context, server, db_instance)
class Extended_availability_zone(extensions.ExtensionDescriptor):
"""Extended Server Attributes support."""
name = "ExtendedAvailabilityZone"
alias = "OS-EXT-AZ"
namespace = ("http://docs.openstack.org/compute/ext/"
"extended_availability_zone/api/v2")
updated = "2013-01-30T00:00:00+00:00"
def get_controller_extensions(self):
controller = ExtendedAZController()
extension = extensions.ControllerExtension(self, 'servers', controller)
return [extension]
def make_server(elem):
elem.set('{%s}availability_zone' % Extended_availability_zone.namespace,
'%s:availability_zone' % Extended_availability_zone.alias)
class ExtendedAZTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('server', selector='server')
make_server(root)
alias = Extended_availability_zone.alias
namespace = Extended_availability_zone.namespace
return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
class ExtendedAZsTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('servers')
elem = xmlutil.SubTemplateElement(root, 'server', selector='servers')
make_server(elem)
alias = Extended_availability_zone.alias
namespace = Extended_availability_zone.namespace
return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
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