[Upgrade Assistant] Move out of legacy folder

.github/CODEOWNERS

@@ -179,6 +179,8 @@
 /x-pack/legacy/plugins/rollup/  @elastic/es-ui
 /x-pack/plugins/searchprofiler/  @elastic/es-ui
 /x-pack/legacy/plugins/snapshot_restore/  @elastic/es-ui
+/x-pack/legacy/plugins/upgrade_assistant/  @elastic/es-ui
+/x-pack/plugins/upgrade_assistant/  @elastic/es-ui
 /x-pack/plugins/watcher/  @elastic/es-ui
 
 # Endpoint

x-pack/.i18nrc.json

@@ -39,8 +39,8 @@
     "xpack.spaces": ["legacy/plugins/spaces", "plugins/spaces"],
     "xpack.taskManager": "legacy/plugins/task_manager",
     "xpack.transform": "legacy/plugins/transform",
+    "xpack.upgradeAssistant": "plugins/upgrade_assistant",
     "xpack.triggersActionsUI": "plugins/triggers_actions_ui",
-    "xpack.upgradeAssistant": "legacy/plugins/upgrade_assistant",
     "xpack.uptime": "legacy/plugins/uptime",
     "xpack.watcher": "plugins/watcher"
   },

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

@@ -3,25 +3,14 @@
  * or more contributor license agreements. Licensed under the Elastic License;
  * you may not use this file except in compliance with the Elastic License.
  */
-import _ from 'lodash';
-import Joi from 'joi';
 import { Legacy } from 'kibana';
-import { resolve } from 'path';
 import mappings from './mappings.json';
-import { plugin } from './server/np_ready';
-import { CloudSetup } from '../../../plugins/cloud/server';
 
 export function upgradeAssistant(kibana: any) {
-  const publicSrc = resolve(__dirname, 'public');
-  const npSrc = resolve(publicSrc, 'np_ready');
-
   const config: Legacy.PluginSpecOptions = {
     id: 'upgrade_assistant',
-    configPrefix: 'xpack.upgrade_assistant',
-    require: ['elasticsearch'],
     uiExports: {
       // @ts-ignore
-      managementSections: ['plugins/upgrade_assistant'],
       savedObjectSchemas: {
         'upgrade-assistant-reindex-operation': {
           isNamespaceAgnostic: true,
@@ -30,41 +19,10 @@ export function upgradeAssistant(kibana: any) {
           isNamespaceAgnostic: true,
         },
       },
-      styleSheetPaths: resolve(npSrc, 'application/index.scss'),
       mappings,
     },
-    publicDir: publicSrc,
-
-    config() {
-      return Joi.object({
-        enabled: Joi.boolean().default(true),
-      }).default();
-    },
-
-    init(server: Legacy.Server) {
-      // Add server routes and initialize the plugin here
-      const instance = plugin({} as any);
 
-      const { usageCollection, cloud } = server.newPlatform.setup.plugins;
-      instance.setup(server.newPlatform.setup.core, {
-        usageCollection,
-        cloud: cloud as CloudSetup,
-        __LEGACY: {
-          // Legacy objects
-          events: server.events,
-          savedObjects: server.savedObjects,
-
-          // Legacy functions
-          log: server.log.bind(server),
-
-          // Legacy plugins
-          plugins: {
-            elasticsearch: server.plugins.elasticsearch,
-            xpack_main: server.plugins.xpack_main,
-          },
-        },
-      });
-    },
+    init() {},
   };
   return new kibana.Plugin(config);
 }