Add API schema for v2.1/v3 config_drive extension

By defining the API schema, it is possible to separate the validation
code from the API method. The API method can be more simple.
In addition, a response of API validation error can be consistent for
the whole Nova API.

Partially implements blueprint v3-api-schema

Change-Id: Ia0681941c5449051c90425348466bd7dc44c2e45

nova/api/openstack/compute/plugins/v3/config_drive.py

@@ -15,6 +15,8 @@
 
 """Config Drive extension."""
 
+from nova.api.openstack.compute.schemas.v3 import config_drive as \
+                                                  schema_config_drive
 from nova.api.openstack import extensions
 from nova.api.openstack import wsgi
 
@@ -68,3 +70,6 @@ class ConfigDrive(extensions.V3APIExtensionBase):
 
     def server_create(self, server_dict, create_kwargs):
         create_kwargs['config_drive'] = server_dict.get(ATTRIBUTE_NAME)
+
+    def get_server_create_schema(self):
+        return schema_config_drive.server_create

nova/api/openstack/compute/schemas/v3/config_drive.py

@@ -0,0 +1,19 @@
+# Copyright 2014 NEC Corporation.  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.
+
+from nova.api.validation import parameter_types
+
+server_create = {
+    'os-config-drive:config_drive': parameter_types.boolean,
+}

nova/tests/api/openstack/compute/plugins/v3/test_config_drive.py

@@ -25,6 +25,7 @@ from nova.api.openstack.compute.plugins.v3 import servers
 from nova.compute import api as compute_api
 from nova.compute import flavors
 from nova import db
+from nova import exception
 from nova.network import manager
 from nova.openstack.common import jsonutils
 from nova import test
@@ -202,7 +203,7 @@ class ServersControllerCreateTest(test.TestCase):
         self._test_create_extra(params,
             override_controller=self.no_config_drive_controller)
 
-    def test_create_instance_with_config_drive(self):
+    def _create_instance_body_of_config_drive(self, param):
         def create(*args, **kwargs):
             self.assertIn('config_drive', kwargs)
             return old_create(*args, **kwargs)
@@ -220,7 +221,7 @@ class ServersControllerCreateTest(test.TestCase):
                     'hello': 'world',
                     'open': 'stack',
                 },
-                config_drive.ATTRIBUTE_NAME: "true",
+                config_drive.ATTRIBUTE_NAME: param,
             },
         }
 
@@ -228,55 +229,39 @@ class ServersControllerCreateTest(test.TestCase):
         req.method = 'POST'
         req.body = jsonutils.dumps(body)
         req.headers["content-type"] = "application/json"
-        res = self.controller.create(req, body=body).obj
 
+        return req, body
+
+    def test_create_instance_with_config_drive(self):
+        param = True
+        req, body = self._create_instance_body_of_config_drive(param)
+        res = self.controller.create(req, body=body).obj
+        server = res['server']
+        self.assertEqual(FAKE_UUID, server['id'])
+
+    def test_create_instance_with_config_drive_as_boolean_string(self):
+        param = 'false'
+        req, body = self._create_instance_body_of_config_drive(param)
+        res = self.controller.create(req, body=body).obj
         server = res['server']
         self.assertEqual(FAKE_UUID, server['id'])
 
     def test_create_instance_with_bad_config_drive(self):
-        image_href = '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6'
-        flavor_ref = 'http://localhost/v3/flavors/3'
-        body = {
-            'server': {
-                'name': 'config_drive_test',
-                'image_ref': image_href,
-                'flavor_ref': flavor_ref,
-                'metadata': {
-                    'hello': 'world',
-                    'open': 'stack',
-                },
-                config_drive.ATTRIBUTE_NAME: image_href,
-            },
-        }
-
-        req = fakes.HTTPRequestV3.blank('/servers')
-        req.method = 'POST'
-        req.body = jsonutils.dumps(body)
-        req.headers["content-type"] = "application/json"
-
-        self.assertRaises(webob.exc.HTTPBadRequest,
+        param = 12345
+        req, body = self._create_instance_body_of_config_drive(param)
+        self.assertRaises(exception.ValidationError,
                           self.controller.create, req, body=body)
 
     def test_create_instance_without_config_drive(self):
-        image_href = '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6'
-        flavor_ref = 'http://localhost/v3/flavors/3'
-        body = {
-            'server': {
-                'name': 'config_drive_test',
-                'image_ref': image_href,
-                'flavor_ref': flavor_ref,
-                'metadata': {
-                    'hello': 'world',
-                    'open': 'stack',
-                },
-            },
-        }
-
-        req = fakes.HTTPRequestV3.blank('/servers')
-        req.method = 'POST'
-        req.body = jsonutils.dumps(body)
-        req.headers["content-type"] = "application/json"
+        param = True
+        req, body = self._create_instance_body_of_config_drive(param)
+        del body['server'][config_drive.ATTRIBUTE_NAME]
         res = self.controller.create(req, body=body).obj
-
         server = res['server']
         self.assertEqual(FAKE_UUID, server['id'])
+
+    def test_create_instance_with_empty_config_drive(self):
+        param = ''
+        req, body = self._create_instance_body_of_config_drive(param)
+        self.assertRaises(exception.ValidationError,
+                          self.controller.create, req, body=body)