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# Copyright 2012 Nebula, Inc.
#
# 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 Flavor Swap API extension."""
from nova.api.openstack import extensions
from nova.api.openstack import wsgi
from nova.api.openstack import xmlutil
authorize = extensions.soft_extension_authorizer('compute', 'flavor_swap')
class FlavorSwapController(wsgi.Controller):
def _extend_flavors(self, req, flavors):
for flavor in flavors:
db_flavor = req.get_db_flavor(flavor['id'])
key = 'swap'
flavor[key] = db_flavor['swap'] or ""
def _show(self, req, resp_obj):
if not authorize(req.environ['nova.context']):
return
if 'flavor' in resp_obj.obj:
resp_obj.attach(xml=FlavorSwapTemplate())
self._extend_flavors(req, [resp_obj.obj['flavor']])
@wsgi.extends
def show(self, req, resp_obj, id):
return self._show(req, resp_obj)
@wsgi.extends(action='create')
def create(self, req, resp_obj, body):
return self._show(req, resp_obj)
@wsgi.extends
def detail(self, req, resp_obj):
if not authorize(req.environ['nova.context']):
return
resp_obj.attach(xml=FlavorsSwapTemplate())
self._extend_flavors(req, list(resp_obj.obj['flavors']))
class Flavor_swap(extensions.ExtensionDescriptor):
"""Support to show the swap status of a flavor"""
name = "FlavorSwap"
alias = "os-flavor-swap"
namespace = ("http://docs.openstack.org/compute/ext/"
"flavor_swap/api/v1.1")
updated = "2012-08-29T00:00:00+00:00"
def get_controller_extensions(self):
controller = FlavorSwapController()
extension = extensions.ControllerExtension(self, 'flavors', controller)
return [extension]
def make_flavor(elem):
# NOTE(vish): this was originally added without a namespace
elem.set('swap', xmlutil.EmptyStringSelector('swap'))
class FlavorSwapTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavor', selector='flavor')
make_flavor(root)
return xmlutil.SlaveTemplate(root, 1)
class FlavorsSwapTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavors')
elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
make_flavor(elem)
return xmlutil.SlaveTemplate(root, 1)
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