api: Add response body schemas for server topology API

Change-Id: I2cd4086d7b348f6d7f1b93a956b8b25f3a60d07f
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

nova/api/openstack/compute/schemas/server_topology.py

@@ -16,3 +16,42 @@ query_params_v21 = {
     'properties': {},
     'additionalProperties': True,
 }
+
+index_response = {
+    'type': 'object',
+    'properties': {
+        'nodes': {
+            'type': 'array',
+            'items': {
+                'type': 'object',
+                'properties': {
+                    'cpu_pinning': {
+                        'type': 'object',
+                        'patternProperties': {
+                            '^[0-9]+$': {'type': 'integer'},
+                        },
+                        'additionalProperties': False,
+                    },
+                    'host_node': {'type': 'integer'},
+                    'memory_mb': {'type': 'integer'},
+                    'siblings': {
+                        'type': 'array',
+                        'items': {
+                            'type': 'array',
+                            'items': {'type': 'integer'},
+                        },
+                    },
+                    'vcpu_set': {
+                        'type': 'array',
+                        'items': {'type': 'integer'},
+                    },
+                },
+                'required': ['memory_mb', 'siblings', 'vcpu_set'],
+                'additionalProperties': False,
+            },
+        },
+        'pagesize_kb': {'type': ['integer', 'null']},
+    },
+    'required': ['nodes', 'pagesize_kb'],
+    'additionalProperties': False,
+}

nova/api/openstack/compute/server_topology.py

@@ -19,6 +19,7 @@ from nova.compute import api as compute
 from nova.policies import server_topology as st_policies
 
 
+@validation.validated
 class ServerTopologyController(wsgi.Controller):
 
     def __init__(self, *args, **kwargs):
@@ -28,6 +29,7 @@ class ServerTopologyController(wsgi.Controller):
     @wsgi.api_version("2.78")
     @wsgi.expected_errors(404)
     @validation.query_schema(schema.query_params_v21)
+    @validation.response_body_schema(schema.index_response)
     def index(self, req, server_id):
         context = req.environ["nova.context"]
         instance = common.get_instance(self.compute_api, context, server_id,