[Remote clusters] Migrate client-side code out of legacy (#57365)

.github/CODEOWNERS

@@ -170,7 +170,7 @@
 /x-pack/legacy/plugins/index_lifecycle_management/  @elastic/es-ui
 /x-pack/legacy/plugins/index_management/  @elastic/es-ui
 /x-pack/legacy/plugins/license_management/  @elastic/es-ui
-/x-pack/legacy/plugins/remote_clusters/  @elastic/es-ui
+/x-pack/plugins/remote_clusters/  @elastic/es-ui
 /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/.i18nrc.json

@@ -27,7 +27,7 @@
     "xpack.maps": "legacy/plugins/maps",
     "xpack.ml": "legacy/plugins/ml",
     "xpack.monitoring": "legacy/plugins/monitoring",
-    "xpack.remoteClusters": ["plugins/remote_clusters", "legacy/plugins/remote_clusters"],
+    "xpack.remoteClusters": "plugins/remote_clusters",
     "xpack.reporting": ["plugins/reporting", "legacy/plugins/reporting"],
     "xpack.rollupJobs": "legacy/plugins/rollup",
     "xpack.searchProfiler": "plugins/searchprofiler",

x-pack/legacy/plugins/remote_clusters/common/index.ts

@@ -4,20 +4,6 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { i18n } from '@kbn/i18n';
-import { LICENSE_TYPE_BASIC, LicenseType } from '../../../common/constants';
-
 export const PLUGIN = {
   ID: 'remote_clusters',
-  // Remote Clusters are used in both CCS and CCR, and CCS is available for all licenses.
-  MINIMUM_LICENSE_REQUIRED: LICENSE_TYPE_BASIC as LicenseType,
-  getI18nName: (): string => {
-    return i18n.translate('xpack.remoteClusters.appName', {
-      defaultMessage: 'Remote Clusters',
-    });
-  },
 };
-
-export const API_BASE_PATH = '/api/remote_clusters';
-
-export { deserializeCluster, serializeCluster } from './cluster_serialization';

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

@@ -4,7 +4,6 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { Legacy } from 'kibana';
 import { resolve } from 'path';
 import { PLUGIN } from './common';
 
@@ -13,18 +12,11 @@ export function remoteClusters(kibana: any) {
     id: PLUGIN.ID,
     configPrefix: 'xpack.remote_clusters',
     publicDir: resolve(__dirname, 'public'),
-    // xpack_main is required for license checking.
-    require: ['kibana', 'elasticsearch', 'xpack_main', 'index_management'],
+    require: ['kibana'],
     uiExports: {
       styleSheetPaths: resolve(__dirname, 'public/index.scss'),
-      managementSections: ['plugins/remote_clusters'],
-      injectDefaultVars(server: Legacy.Server) {
-        const config = server.config();
-        return {
-          remoteClustersUiEnabled: config.get('xpack.remote_clusters.ui.enabled'),
-        };
-      },
     },
+    // TODO: Remove once CCR has migrated to NP
     config(Joi: any) {
       return Joi.object({
         // display menu item
@@ -41,6 +33,6 @@ export function remoteClusters(kibana: any) {
         config.get('xpack.remote_clusters.enabled') && config.get('xpack.index_management.enabled')
       );
     },
-    init(server: any) {},
+    init() {},
   });
 }