Validate that data received from the ramdisk is a JSON object

Change-Id: I16210ece532f7901c20074cd205b44fdb2f4084d
Closes-Bug: #1525876

ironic_inspector/main.py

@@ -165,8 +165,11 @@ def version_root(version):
 @convert_exceptions
 def api_continue():
     data = flask.request.get_json(force=True)
-    LOG.debug("/v1/continue got JSON %s", data)
+    if not isinstance(data, dict):
+        raise utils.Error(_('Invalid data: expected a JSON object, got %s') %
+                          data.__class__.__name__)
 
+    LOG.debug("/v1/continue got JSON %s", data)
     return flask.jsonify(process.process(data))
 
 

ironic_inspector/test/test_main.py

@@ -109,25 +109,31 @@ class TestApiIntrospect(BaseAPITest):
         self.assertEqual(400, res.status_code)
 
 
+@mock.patch.object(process, 'process', autospec=True)
 class TestApiContinue(BaseAPITest):
-    @mock.patch.object(process, 'process', autospec=True)
     def test_continue(self, process_mock):
         # should be ignored
         CONF.set_override('auth_strategy', 'keystone')
         process_mock.return_value = {'result': 42}
-        res = self.app.post('/v1/continue', data='"JSON"')
+        res = self.app.post('/v1/continue', data='{"foo": "bar"}')
         self.assertEqual(200, res.status_code)
-        process_mock.assert_called_once_with("JSON")
+        process_mock.assert_called_once_with({"foo": "bar"})
         self.assertEqual({"result": 42}, json.loads(res.data.decode()))
 
-    @mock.patch.object(process, 'process', autospec=True)
     def test_continue_failed(self, process_mock):
         process_mock.side_effect = iter([utils.Error("boom")])
-        res = self.app.post('/v1/continue', data='"JSON"')
+        res = self.app.post('/v1/continue', data='{"foo": "bar"}')
         self.assertEqual(400, res.status_code)
-        process_mock.assert_called_once_with("JSON")
+        process_mock.assert_called_once_with({"foo": "bar"})
         self.assertEqual('boom', _get_error(res))
 
+    def test_continue_wrong_type(self, process_mock):
+        res = self.app.post('/v1/continue', data='42')
+        self.assertEqual(400, res.status_code)
+        self.assertEqual('Invalid data: expected a JSON object, got int',
+                         _get_error(res))
+        self.assertFalse(process_mock.called)
+
 
 class TestApiGetStatus(BaseAPITest):
     @mock.patch.object(node_cache, 'get_node', autospec=True)

releasenotes/notes/processing-data-type-check-7c914339d3ab15ba.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - The data processing API endpoint now validates that data received from
+    the ramdisk is actually a JSON object instead of failing the internal error
+    later (issue https://bugs.launchpad.net/bugs/1525876).