Merge feedback PR by jloysenes

x-pack/legacy/plugins/painless_playground/common/constants.ts

@@ -7,3 +7,5 @@
 export const PLUGIN_ID = 'painless_playground';
 
 export const API_ROUTE_EXECUTE = '/api/painless_playground/execute';
+
+export const ADVANCED_SETTINGS_FLAG_NAME = 'devTools:enablePainlessPlayground';

x-pack/legacy/plugins/painless_playground/index.ts

@@ -3,12 +3,13 @@
  * or more contributor license agreements. Licensed under the Elastic License;
  * you may not use this file except in compliance with the Elastic License.
  */
-
+import { i18n } from '@kbn/i18n';
 import { resolve } from 'path';
-import { PLUGIN_ID } from './common/constants';
+import { PLUGIN_ID, ADVANCED_SETTINGS_FLAG_NAME } from './common/constants';
 
 import { registerLicenseChecker } from './server/register_license_checker';
 import { registerExecuteRoute } from './server/register_execute_route';
+import { Legacy } from '../../../../kibana';
 
 export const painlessPlayground = (kibana: any) =>
   new kibana.Plugin({
@@ -24,7 +25,24 @@ export const painlessPlayground = (kibana: any) =>
     uiExports: {
       devTools: [resolve(__dirname, 'public/register')],
     },
-    init: (server: any) => {
+    init: (server: Legacy.Server) => {
+      // Register feature flag
+      server.newPlatform.setup.core.uiSettings.register({
+        [ADVANCED_SETTINGS_FLAG_NAME]: {
+          name: i18n.translate('kbn.advancedSettings.devTools.painlessPlaygroundTitle', {
+            defaultMessage: 'Painless Playground',
+          }),
+          description: i18n.translate(
+            'kbn.advancedSettings.devTools.painlessPlaygroundDescription',
+            {
+              defaultMessage: 'Enable experimental Painless Playground.',
+            }
+          ),
+          value: false,
+          category: ['Dev Tools'],
+        },
+      });
+
       registerLicenseChecker(server);
       registerExecuteRoute(server);
     },

x-pack/legacy/plugins/painless_playground/public/components/helpers.ts

@@ -60,3 +60,16 @@ export function formatJson(json: any): string {
     return `Invalid JSON ${String(json)}`;
   }
 }
+
+export function formatExecutionError(json: object) {
+  if (json.script_stack && json.caused_by) {
+    return `Unhandled Exception ${json.caused_by.type}
+
+${json.caused_by.reason}
+
+Located at:
+${formatJson(json.script_stack)}
+`;
+  }
+  return formatJson(json);
+}