[7.x] xpack_main legacy plugin pre-removal cleanup (#76257) (#76358)

* xpack_main legacy plugin pre-removal cleanup (#76257)

* cleanup xpack_main legacy plugin, remove capabilities mixin

* fix test env

* delete injectXpackSignature and related tests
# Conflicts:
#	x-pack/legacy/plugins/xpack_main/index.js
#	x-pack/scripts/functional_tests.js

* remove unused keys

* create the xpackLegacy plugin

* update plugin list

* fix type

docs/developer/plugin-list.asciidoc

@@ -490,6 +490,10 @@ in their infrastructure.
 |This plugins adopts some conventions in addition to or in place of conventions in Kibana (at the time of the plugin's creation):
 
 
+|{kib-repo}blob/{branch}/x-pack/plugins/xpack_legacy[xpackLegacy]
+|WARNING: Missing README.
+
+
 |===
 
 include::{kibana-root}/src/plugins/dashboard/README.asciidoc[leveloffset=+1]

src/legacy/server/kbn_server.js

@@ -34,7 +34,6 @@ import configCompleteMixin from './config/complete';
 import { optimizeMixin } from '../../optimize';
 import * as Plugins from './plugins';
 import { savedObjectsMixin } from './saved_objects/saved_objects_mixin';
-import { capabilitiesMixin } from './capabilities';
 import { serverExtensionsMixin } from './server_extensions';
 import { uiMixin } from '../ui';
 import { i18nMixin } from './i18n';
@@ -115,9 +114,6 @@ export default class KbnServer {
         // setup saved object routes
         savedObjectsMixin,
 
-        // setup capabilities routes
-        capabilitiesMixin,
-
         // setup routes that serve the @kbn/optimizer output
         optimizeMixin,
 

x-pack/.i18nrc.json

@@ -32,7 +32,7 @@
     "xpack.licenseMgmt": "plugins/license_management",
     "xpack.licensing": "plugins/licensing",
     "xpack.logstash": ["plugins/logstash", "legacy/plugins/logstash"],
-    "xpack.main": "legacy/plugins/xpack_main",
+    "xpack.main": ["legacy/plugins/xpack_main", "plugins/xpack_legacy"],
     "xpack.maps": ["plugins/maps", "legacy/plugins/maps"],
     "xpack.ml": ["plugins/ml", "legacy/plugins/ml"],
     "xpack.monitoring": ["plugins/monitoring"],

x-pack/legacy/plugins/xpack_main/index.js

@@ -5,14 +5,9 @@
  */
 
 import { resolve } from 'path';
-import { XPACK_DEFAULT_ADMIN_EMAIL_UI_SETTING } from '../../server/lib/constants';
 import { mirrorPluginStatus } from '../../server/lib/mirror_plugin_status';
-import { replaceInjectedVars } from './server/lib/replace_injected_vars';
 import { setupXPackMain } from './server/lib/setup_xpack_main';
 import { xpackInfoRoute, settingsRoute } from './server/routes/api/v1';
-import { i18n } from '@kbn/i18n';
-
-export { callClusterFactory } from './server/lib/call_cluster_factory';
 
 export const xpackMain = (kibana) => {
   return new kibana.Plugin({
@@ -32,53 +27,7 @@ export const xpackMain = (kibana) => {
       }).default();
     },
 
-    uiCapabilities(server) {
-      const featuresPlugin = server.newPlatform.setup.plugins.features;
-      if (!featuresPlugin) {
-        throw new Error('New Platform XPack Features plugin is not available.');
-      }
-      return featuresPlugin.getFeaturesUICapabilities();
-    },
-
-    uiExports: {
-      uiSettingDefaults: {
-        [XPACK_DEFAULT_ADMIN_EMAIL_UI_SETTING]: {
-          name: i18n.translate('xpack.main.uiSettings.adminEmailTitle', {
-            defaultMessage: 'Admin email',
-          }),
-          // TODO: change the description when email address is used for more things?
-          description: i18n.translate('xpack.main.uiSettings.adminEmailDescription', {
-            defaultMessage:
-              'Recipient email address for X-Pack admin operations, such as Cluster Alert email notifications from Monitoring.',
-          }),
-          deprecation: {
-            message: i18n.translate('xpack.main.uiSettings.adminEmailDeprecation', {
-              defaultMessage:
-                'This setting is deprecated and will not be supported in Kibana 8.0. Please configure `monitoring.cluster_alerts.email_notifications.email_address` in your kibana.yml settings.',
-            }),
-            docLinksKey: 'kibanaGeneralSettings',
-          },
-          type: 'string', // TODO: Any way of ensuring this is a valid email address?
-          value: null,
-        },
-      },
-      replaceInjectedVars,
-      injectDefaultVars(server) {
-        const config = server.config();
-
-        return {
-          activeSpace: null,
-          spacesEnabled: config.get('xpack.spaces.enabled'),
-        };
-      },
-    },
-
     init(server) {
-      const featuresPlugin = server.newPlatform.setup.plugins.features;
-      if (!featuresPlugin) {
-        throw new Error('New Platform XPack Features plugin is not available.');
-      }
-
       mirrorPluginStatus(server.plugins.elasticsearch, this, 'yellow', 'red');
 
       setupXPackMain(server);