[ML] Disabling ML if license feature is disabled (elastic#73187)

* [ML] Disabling ML if license feature is disabled

* disabling UI feature

* removing unused import

* small refactor

* disabling ml using plugin updater

* function rename

* update comment

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

x-pack/plugins/ml/common/license/index.ts

@@ -11,4 +11,5 @@ export {
   MINIMUM_LICENSE,
   isFullLicense,
   isMinimumLicense,
+  isMlEnabled,
 } from './ml_license';

x-pack/plugins/ml/common/license/ml_license.ts

@@ -82,3 +82,7 @@ export function isFullLicense(license: ILicense) {
 export function isMinimumLicense(license: ILicense) {
   return license.check(PLUGIN_ID, MINIMUM_LICENSE).state === 'valid';
 }
+
+export function isMlEnabled(license: ILicense) {
+  return license.getFeature(PLUGIN_ID).isEnabled;
+}

x-pack/plugins/ml/public/application/management/index.ts

@@ -11,37 +11,28 @@
  */
 
 import { i18n } from '@kbn/i18n';
-import { take } from 'rxjs/operators';
 
 import { CoreSetup } from 'kibana/public';
-import { MlStartDependencies, MlSetupDependencies } from '../../plugin';
+import { ManagementSetup } from 'src/plugins/management/public';
+import { MlStartDependencies } from '../../plugin';
 
 import { ManagementAppMountParams } from '../../../../../../src/plugins/management/public';
-import { PLUGIN_ID } from '../../../common/constants/app';
-import { MINIMUM_FULL_LICENSE } from '../../../common/license';
 
-export function initManagementSection(
-  pluginsSetup: MlSetupDependencies,
+export function registerManagementSection(
+  management: ManagementSetup | undefined,
   core: CoreSetup<MlStartDependencies>
 ) {
-  const licensing = pluginsSetup.licensing.license$.pipe(take(1));
-  licensing.subscribe((license) => {
-    const management = pluginsSetup.management;
-    if (
-      management !== undefined &&
-      license.check(PLUGIN_ID, MINIMUM_FULL_LICENSE).state === 'valid'
-    ) {
-      management.sections.section.insightsAndAlerting.registerApp({
-        id: 'jobsListLink',
-        title: i18n.translate('xpack.ml.management.jobsListTitle', {
-          defaultMessage: 'Machine Learning Jobs',
-        }),
-        order: 2,
-        async mount(params: ManagementAppMountParams) {
-          const { mountApp } = await import('./jobs_list');
-          return mountApp(core, params);
-        },
-      });
-    }
-  });
+  if (management !== undefined) {
+    management.sections.section.insightsAndAlerting.registerApp({
+      id: 'jobsListLink',
+      title: i18n.translate('xpack.ml.management.jobsListTitle', {
+        defaultMessage: 'Machine Learning Jobs',
+      }),
+      order: 2,
+      async mount(params: ManagementAppMountParams) {
+        const { mountApp } = await import('./jobs_list');
+        return mountApp(core, params);
+      },
+    });
+  }
 }

x-pack/plugins/ml/public/plugin.ts

@@ -12,16 +12,19 @@ import {
   AppMountParameters,
   PluginInitializerContext,
 } from 'kibana/public';
+import { BehaviorSubject } from 'rxjs';
+import { take } from 'rxjs/operators';
 import { ManagementSetup } from 'src/plugins/management/public';
 import { SharePluginSetup, SharePluginStart, UrlGeneratorState } from 'src/plugins/share/public';
 import { UsageCollectionSetup } from 'src/plugins/usage_collection/server';
 
 import { DataPublicPluginStart } from 'src/plugins/data/public';
 import { HomePublicPluginSetup } from 'src/plugins/home/public';
 import { EmbeddableSetup } from 'src/plugins/embeddable/public';
+import { AppStatus, AppUpdater } from '../../../../src/core/public';
 import { SecurityPluginSetup } from '../../security/public';
 import { LicensingPluginSetup } from '../../licensing/public';
-import { initManagementSection } from './application/management';
+import { registerManagementSection } from './application/management';
 import { LicenseManagementUIPluginSetup } from '../../license_management/public';
 import { setDependencyCache } from './application/util/dependency_cache';
 import { PLUGIN_ID, PLUGIN_ICON } from '../common/constants/app';
@@ -31,7 +34,8 @@ import { registerEmbeddables } from './embeddables';
 import { UiActionsSetup, UiActionsStart } from '../../../../src/plugins/ui_actions/public';
 import { registerMlUiActions } from './ui_actions';
 import { KibanaLegacyStart } from '../../../../src/plugins/kibana_legacy/public';
-import { MlUrlGenerator, MlUrlGeneratorState, ML_APP_URL_GENERATOR } from './url_generator';
+import { registerUrlGenerator, MlUrlGeneratorState, ML_APP_URL_GENERATOR } from './url_generator';
+import { isMlEnabled, isFullLicense } from '../common/license';
 
 export interface MlStartDependencies {
   data: DataPublicPluginStart;
@@ -61,18 +65,11 @@ declare module '../../../../src/plugins/share/public' {
 export type MlCoreSetup = CoreSetup<MlStartDependencies, MlPluginStart>;
 
 export class MlPlugin implements Plugin<MlPluginSetup, MlPluginStart> {
+  private appUpdater = new BehaviorSubject<AppUpdater>(() => ({}));
+
   constructor(private initializerContext: PluginInitializerContext) {}
 
   setup(core: MlCoreSetup, pluginsSetup: MlSetupDependencies) {
-    const baseUrl = core.http.basePath.prepend('/app/ml');
-
-    pluginsSetup.share.urlGenerators.registerUrlGenerator(
-      new MlUrlGenerator({
-        appBasePath: baseUrl,
-        useHash: core.uiSettings.get('state:storeInSessionStorage'),
-      })
-    );
-
     core.application.register({
       id: PLUGIN_ID,
       title: i18n.translate('xpack.ml.plugin.title', {
@@ -82,6 +79,7 @@ export class MlPlugin implements Plugin<MlPluginSetup, MlPluginStart> {
       euiIconType: PLUGIN_ICON,
       appRoute: '/app/ml',
       category: DEFAULT_APP_CATEGORIES.kibana,
+      updater$: this.appUpdater,
       mount: async (params: AppMountParameters) => {
         const [coreStart, pluginsStart] = await core.getStartServices();
         const kibanaVersion = this.initializerContext.env.packageInfo.version;
@@ -112,11 +110,26 @@ export class MlPlugin implements Plugin<MlPluginSetup, MlPluginStart> {
       },
     });
 
-    registerFeature(pluginsSetup.home);
+    const licensing = pluginsSetup.licensing.license$.pipe(take(1));
+    licensing.subscribe((license) => {
+      if (isMlEnabled(license)) {
+        // add ML to home page
+        registerFeature(pluginsSetup.home);
 
-    initManagementSection(pluginsSetup, core);
-    registerEmbeddables(pluginsSetup.embeddable, core);
-    registerMlUiActions(pluginsSetup.uiActions, core);
+        // register various ML plugin features which require a full license
+        if (isFullLicense(license)) {
+          registerManagementSection(pluginsSetup.management, core);
+          registerEmbeddables(pluginsSetup.embeddable, core);
+          registerMlUiActions(pluginsSetup.uiActions, core);
+          registerUrlGenerator(pluginsSetup.share, core);
+        }
+      } else {
+        // if ml is disabled in elasticsearch, disable ML in kibana
+        this.appUpdater.next(() => ({
+          status: AppStatus.inaccessible,
+        }));
+      }
+    });
 
     return {};
   }

x-pack/plugins/ml/public/url_generator.ts

@@ -4,11 +4,13 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { UrlGeneratorsDefinition } from '../../../../src/plugins/share/public';
+import { CoreSetup } from 'kibana/public';
+import { SharePluginSetup, UrlGeneratorsDefinition } from '../../../../src/plugins/share/public';
 import { TimeRange } from '../../../../src/plugins/data/public';
 import { setStateToKbnUrl } from '../../../../src/plugins/kibana_utils/public';
 import { JobId } from '../../reporting/common/types';
 import { ExplorerAppState } from './application/explorer/explorer_dashboard_service';
+import { MlStartDependencies } from './plugin';
 
 export const ML_APP_URL_GENERATOR = 'ML_APP_URL_GENERATOR';
 
@@ -88,3 +90,19 @@ export class MlUrlGenerator implements UrlGeneratorsDefinition<typeof ML_APP_URL
     return url;
   }
 }
+
+/**
+ * Registers the URL generator
+ */
+export function registerUrlGenerator(
+  share: SharePluginSetup,
+  core: CoreSetup<MlStartDependencies>
+) {
+  const baseUrl = core.http.basePath.prepend('/app/ml');
+  share.urlGenerators.registerUrlGenerator(
+    new MlUrlGenerator({
+      appBasePath: baseUrl,
+      useHash: core.uiSettings.get('state:storeInSessionStorage'),
+    })
+  );
+}

x-pack/plugins/ml/server/lib/capabilities/capabilities_switcher.ts

@@ -9,7 +9,7 @@ import { Observable } from 'rxjs';
 import { take } from 'rxjs/operators';
 import { CapabilitiesSwitcher, CoreSetup, Logger } from 'src/core/server';
 import { ILicense } from '../../../../licensing/common/types';
-import { isFullLicense, isMinimumLicense } from '../../../common/license';
+import { isFullLicense, isMinimumLicense, isMlEnabled } from '../../../common/license';
 import { MlCapabilities, basicLicenseMlCapabilities } from '../../../common/types/capabilities';
 
 export const setupCapabilitiesSwitcher = (
@@ -30,9 +30,10 @@ function getSwitcher(license$: Observable<ILicense>, logger: Logger): Capabiliti
 
     try {
       const license = await license$.pipe(take(1)).toPromise();
+      const mlEnabled = isMlEnabled(license);
 
       // full license, leave capabilities as they were
-      if (isFullLicense(license)) {
+      if (mlEnabled && isFullLicense(license)) {
         return capabilities;
       }
 
@@ -45,7 +46,7 @@ function getSwitcher(license$: Observable<ILicense>, logger: Logger): Capabiliti
       });
 
       // for a basic license, reapply the original capabilities for the basic license features
-      if (isMinimumLicense(license)) {
+      if (mlEnabled && isMinimumLicense(license)) {
         basicLicenseMlCapabilities.forEach((c) => (mlCaps[c] = originalCapabilities[c]));
       }