use App updater API instead of deprecated chrome.navLinks.update

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

@@ -4,9 +4,11 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
+import { BehaviorSubject } from 'rxjs';
 import { i18n } from '@kbn/i18n';
 import {
   AppMountParameters,
+  AppUpdater,
   CoreSetup,
   DEFAULT_APP_CATEGORIES,
   Plugin as PluginClass,
@@ -28,6 +30,8 @@ interface SetupPlugins {
 export type ObservabilityPluginStart = void;
 
 export class Plugin implements PluginClass<ObservabilityPluginSetup, ObservabilityPluginStart> {
+  private readonly appUpdater$ = new BehaviorSubject<AppUpdater>(() => ({}));
+
   constructor(context: PluginInitializerContext) {}
 
   public setup(core: CoreSetup, plugins: SetupPlugins) {
@@ -37,6 +41,7 @@ export class Plugin implements PluginClass<ObservabilityPluginSetup, Observabili
       order: 8000,
       euiIconType: 'logoObservability',
       appRoute: '/app/observability',
+      updater$: this.appUpdater$,
       category: DEFAULT_APP_CATEGORIES.observability,
 
       mount: async (params: AppMountParameters<unknown>) => {
@@ -79,7 +84,7 @@ export class Plugin implements PluginClass<ObservabilityPluginSetup, Observabili
       dashboard: { register: registerDataHandler },
     };
   }
-  public start(core: CoreStart) {
-    toggleOverviewLinkInNav(core);
+  public start({ application }: CoreStart) {
+    toggleOverviewLinkInNav(this.appUpdater$, application);
   }
 }

x-pack/plugins/observability/public/toggle_overview_link_in_nav.test.tsx

@@ -3,47 +3,58 @@
  * or more contributor license agreements. Licensed under the Elastic License;
  * you may not use this file except in compliance with the Elastic License.
  */
-import { CoreStart } from 'kibana/public';
+
+import { Subject } from 'rxjs';
+import { AppUpdater, AppNavLinkStatus } from '../../../../src/core/public';
+import { applicationServiceMock } from '../../../../src/core/public/mocks';
 
 import { toggleOverviewLinkInNav } from './toggle_overview_link_in_nav';
 
 describe('toggleOverviewLinkInNav', () => {
-  const update = jest.fn();
-  afterEach(() => {
-    update.mockClear();
+  let applicationStart: ReturnType<typeof applicationServiceMock.createStartContract>;
+  let subjectMock: jest.Mocked<Subject<AppUpdater>>;
+
+  beforeEach(() => {
+    applicationStart = applicationServiceMock.createStartContract();
+    subjectMock = {
+      next: jest.fn(),
+    } as any;
   });
+
   it('hides overview menu', () => {
-    const core = ({
-      application: {
-        capabilities: {
-          navLinks: {
-            apm: false,
-            logs: false,
-            metrics: false,
-            uptime: false,
-          },
-        },
+    applicationStart.capabilities = {
+      management: {},
+      catalogue: {},
+      navLinks: {
+        apm: false,
+        logs: false,
+        metrics: false,
+        uptime: false,
       },
-      chrome: { navLinks: { update } },
-    } as unknown) as CoreStart;
-    toggleOverviewLinkInNav(core);
-    expect(update).toHaveBeenCalledWith('observability-overview', { hidden: true });
+    };
+
+    toggleOverviewLinkInNav(subjectMock, applicationStart);
+
+    expect(subjectMock.next).toHaveBeenCalledTimes(1);
+    const updater = subjectMock.next.mock.calls[0][0]!;
+    expect(updater({} as any)).toEqual({
+      navLinkStatus: AppNavLinkStatus.hidden,
+    });
   });
   it('shows overview menu', () => {
-    const core = ({
-      application: {
-        capabilities: {
-          navLinks: {
-            apm: true,
-            logs: false,
-            metrics: false,
-            uptime: false,
-          },
-        },
+    applicationStart.capabilities = {
+      management: {},
+      catalogue: {},
+      navLinks: {
+        apm: true,
+        logs: false,
+        metrics: false,
+        uptime: false,
       },
-      chrome: { navLinks: { update } },
-    } as unknown) as CoreStart;
-    toggleOverviewLinkInNav(core);
-    expect(update).not.toHaveBeenCalled();
+    };
+
+    toggleOverviewLinkInNav(subjectMock, applicationStart);
+
+    expect(subjectMock.next).not.toHaveBeenCalled();
   });
 });

x-pack/plugins/observability/public/toggle_overview_link_in_nav.tsx

@@ -4,12 +4,18 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { CoreStart } from 'kibana/public';
+import { Subject } from 'rxjs';
+import { AppNavLinkStatus, AppUpdater, ApplicationStart } from '../../../../src/core/public';
 
-export function toggleOverviewLinkInNav(core: CoreStart) {
-  const { apm, logs, metrics, uptime } = core.application.capabilities.navLinks;
+export function toggleOverviewLinkInNav(
+  updater$: Subject<AppUpdater>,
+  { capabilities }: ApplicationStart
+) {
+  const { apm, logs, metrics, uptime } = capabilities.navLinks;
   const someVisible = Object.values({ apm, logs, metrics, uptime }).some((visible) => visible);
   if (!someVisible) {
-    core.chrome.navLinks.update('observability-overview', { hidden: true });
+    updater$.next(() => ({
+      navLinkStatus: AppNavLinkStatus.hidden,
+    }));
   }
 }