Port flavor_disabled extension to v3 API Part 1

This changeset only copies the v2 files (implementation and test)
into the appropriate v3 directories unchanged. The copy as-is
will not be loaded by either the v2 or v3 extension loaders. The
second changeset will then make the changes required for it to
work as a v3 extension.

This is being done in order to make reviewing of extension porting
easier as gerrit will display only what is actually changed for v3
rather than entirely new files

Partially implements blueprint nova-v3-api

Change-Id: I01688d7f9d976b7e406d46283c6d0010ddc3476a

1 files changed, 89 insertions, 0 deletions

diff --git a/nova/api/openstack/compute/plugins/v3/flavor_disabled.py b/nova/api/openstack/compute/plugins/v3/flavor_disabled.py
new file mode 100644
index 000000000..62f902409
--- /dev/null
+++ b/nova/api/openstack/compute/plugins/v3/flavor_disabled.py
@@ -0,0 +1,89 @@
+#   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 Disabled 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_disabled')
+
+
+class FlavorDisabledController(wsgi.Controller):
+    def _extend_flavors(self, req, flavors):
+        for flavor in flavors:
+            db_flavor = req.get_db_flavor(flavor['id'])
+            key = "%s:disabled" % Flavor_disabled.alias
+            flavor[key] = db_flavor['disabled']
+
+    def _show(self, req, resp_obj):
+        if not authorize(req.environ['nova.context']):
+            return
+        if 'flavor' in resp_obj.obj:
+            resp_obj.attach(xml=FlavorDisabledTemplate())
+            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=FlavorsDisabledTemplate())
+        self._extend_flavors(req, list(resp_obj.obj['flavors']))
+
+
+class Flavor_disabled(extensions.ExtensionDescriptor):
+    """Support to show the disabled status of a flavor."""
+
+    name = "FlavorDisabled"
+    alias = "OS-FLV-DISABLED"
+    namespace = ("http://docs.openstack.org/compute/ext/"
+                 "flavor_disabled/api/v1.1")
+    updated = "2012-08-29T00:00:00+00:00"
+
+    def get_controller_extensions(self):
+        controller = FlavorDisabledController()
+        extension = extensions.ControllerExtension(self, 'flavors', controller)
+        return [extension]
+
+
+def make_flavor(elem):
+    elem.set('{%s}disabled' % Flavor_disabled.namespace,
+             '%s:disabled' % Flavor_disabled.alias)
+
+
+class FlavorDisabledTemplate(xmlutil.TemplateBuilder):
+    def construct(self):
+        root = xmlutil.TemplateElement('flavor', selector='flavor')
+        make_flavor(root)
+        return xmlutil.SlaveTemplate(root, 1, nsmap={
+            Flavor_disabled.alias: Flavor_disabled.namespace})
+
+
+class FlavorsDisabledTemplate(xmlutil.TemplateBuilder):
+    def construct(self):
+        root = xmlutil.TemplateElement('flavors')
+        elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
+        make_flavor(elem)
+        return xmlutil.SlaveTemplate(root, 1, nsmap={
+            Flavor_disabled.alias: Flavor_disabled.namespace})