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OpenStack Study: flavor_swap.py**** CubicPower OpenStack Study ****
# # 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')
**** CubicPower OpenStack Study **** class FlavorSwapController(wsgi.Controller):
**** CubicPower OpenStack Study **** 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 ""
**** CubicPower OpenStack Study **** 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
**** CubicPower OpenStack Study **** def show(self, req, resp_obj, id): return self._show(req, resp_obj) @wsgi.extends(action='create')
**** CubicPower OpenStack Study **** def create(self, req, resp_obj, body): return self._show(req, resp_obj) @wsgi.extends
**** CubicPower OpenStack Study **** 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']))
**** CubicPower OpenStack Study **** 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"
**** CubicPower OpenStack Study **** 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'))
**** CubicPower OpenStack Study **** def make_flavor(elem): # NOTE(vish): this was originally added without a namespace elem.set('swap', xmlutil.EmptyStringSelector('swap'))
**** CubicPower OpenStack Study **** class FlavorSwapTemplate(xmlutil.TemplateBuilder):
**** CubicPower OpenStack Study **** def construct(self): root = xmlutil.TemplateElement('flavor', selector='flavor') make_flavor(root) return xmlutil.SlaveTemplate(root, 1)
**** CubicPower OpenStack Study **** class FlavorsSwapTemplate(xmlutil.TemplateBuilder):
**** CubicPower OpenStack Study **** 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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