[7.x] Add featureUsage API to licensing context provider (#69838)

x-pack/mocks.ts

@@ -9,7 +9,7 @@ import { licensingMock } from './plugins/licensing/server/mocks';
 function createCoreRequestHandlerContextMock() {
   return {
     core: coreMock.createRequestHandlerContext(),
-    licensing: { license: licensingMock.createLicense() },
+    licensing: licensingMock.createRequestHandlerContext(),
   };
 }
 

x-pack/plugins/features/server/routes/index.test.ts

@@ -16,9 +16,7 @@ import { FeatureConfig } from '../../common';
 function createContextMock(licenseType: LicenseType = 'gold') {
   return {
     core: coreMock.createRequestHandlerContext(),
-    licensing: {
-      license: licensingMock.createLicense({ license: { type: licenseType } }),
-    },
+    licensing: licensingMock.createRequestHandlerContext({ license: { type: licenseType } }),
   };
 }
 

x-pack/plugins/licensing/server/licensing_route_handler_context.test.ts

@@ -5,17 +5,27 @@
  */
 
 import { BehaviorSubject } from 'rxjs';
-import { licenseMock } from '../common/licensing.mock';
 
+import { licenseMock } from '../common/licensing.mock';
 import { createRouteHandlerContext } from './licensing_route_handler_context';
+import { featureUsageMock } from './services/feature_usage_service.mock';
+import { FeatureUsageServiceStart } from './services';
+import { StartServicesAccessor } from 'src/core/server';
+import { LicensingPluginStart } from './types';
+
+const createStartServices = (
+  featureUsage: FeatureUsageServiceStart = featureUsageMock.createStart()
+): StartServicesAccessor<{}, LicensingPluginStart> => {
+  return async () => [{} as any, {}, { featureUsage } as LicensingPluginStart];
+};
 
 describe('createRouteHandlerContext', () => {
   it('returns a function providing the last license value', async () => {
     const firstLicense = licenseMock.createLicense();
     const secondLicense = licenseMock.createLicense();
     const license$ = new BehaviorSubject(firstLicense);
 
-    const routeHandler = createRouteHandlerContext(license$);
+    const routeHandler = createRouteHandlerContext(license$, createStartServices());
 
     const firstCtx = await routeHandler({} as any, {} as any, {} as any);
     license$.next(secondLicense);
@@ -24,4 +34,14 @@ describe('createRouteHandlerContext', () => {
     expect(firstCtx.license).toBe(firstLicense);
     expect(secondCtx.license).toBe(secondLicense);
   });
+
+  it('returns a the feature usage API', async () => {
+    const license$ = new BehaviorSubject(licenseMock.createLicense());
+    const featureUsage = featureUsageMock.createStart();
+
+    const routeHandler = createRouteHandlerContext(license$, createStartServices(featureUsage));
+    const ctx = await routeHandler({} as any, {} as any, {} as any);
+
+    expect(ctx.featureUsage).toBe(featureUsage);
+  });
 });

x-pack/plugins/licensing/server/licensing_route_handler_context.ts

@@ -4,21 +4,29 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { IContextProvider, RequestHandler } from 'src/core/server';
+import { IContextProvider, RequestHandler, StartServicesAccessor } from 'src/core/server';
 import { Observable } from 'rxjs';
 import { take } from 'rxjs/operators';
 
 import { ILicense } from '../common/types';
+import { LicensingPluginStart } from './types';
 
 /**
  * Create a route handler context for access to Kibana license information.
  * @param license$ An observable of a License instance.
  * @public
  */
 export function createRouteHandlerContext(
-  license$: Observable<ILicense>
+  license$: Observable<ILicense>,
+  getStartServices: StartServicesAccessor<{}, LicensingPluginStart>
 ): IContextProvider<RequestHandler<any, any, any>, 'licensing'> {
   return async function licensingRouteHandlerContext() {
-    return { license: await license$.pipe(take(1)).toPromise() };
+    const [, , { featureUsage }] = await getStartServices();
+    const license = await license$.pipe(take(1)).toPromise();
+
+    return {
+      featureUsage,
+      license,
+    };
   };
 }

x-pack/plugins/licensing/server/mocks.ts

@@ -4,7 +4,11 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 import { BehaviorSubject } from 'rxjs';
-import { LicensingPluginSetup, LicensingPluginStart } from './types';
+import {
+  LicensingPluginSetup,
+  LicensingPluginStart,
+  LicensingRequestHandlerContext,
+} from './types';
 import { licenseMock } from '../common/licensing.mock';
 import { featureUsageMock } from './services/feature_usage_service.mock';
 
@@ -43,8 +47,20 @@ const createStartMock = (): jest.Mocked<LicensingPluginStart> => {
   return mock;
 };
 
+const createRequestHandlerContextMock = (
+  ...options: Parameters<typeof licenseMock.createLicense>
+): jest.Mocked<LicensingRequestHandlerContext> => {
+  const mock: jest.Mocked<LicensingRequestHandlerContext> = {
+    license: licenseMock.createLicense(...options),
+    featureUsage: featureUsageMock.createStart(),
+  };
+
+  return mock;
+};
+
 export const licensingMock = {
   createSetup: createSetupMock,
   createStart: createStartMock,
+  createRequestHandlerContext: createRequestHandlerContextMock,
   ...licenseMock,
 };

x-pack/plugins/licensing/server/plugin.ts

@@ -128,7 +128,10 @@ export class LicensingPlugin implements Plugin<LicensingPluginSetup, LicensingPl
       pollingFrequency.asMilliseconds()
     );
 
-    core.http.registerRouteHandlerContext('licensing', createRouteHandlerContext(license$));
+    core.http.registerRouteHandlerContext(
+      'licensing',
+      createRouteHandlerContext(license$, core.getStartServices)
+    );
 
     registerRoutes(core.http.createRouter(), core.getStartServices);
     core.http.registerOnPreResponse(createOnPreResponseHandler(refresh, license$));

x-pack/plugins/licensing/server/types.ts

@@ -40,11 +40,18 @@ export interface RawLicense {
   mode: LicenseType;
 }
 
+/**
+ * The APIs exposed on the `licensing` key of {@link RequestHandlerContext} for plugins that depend on licensing.
+ * @public
+ */
+export interface LicensingRequestHandlerContext {
+  featureUsage: FeatureUsageServiceStart;
+  license: ILicense;
+}
+
 declare module 'src/core/server' {
   interface RequestHandlerContext {
-    licensing: {
-      license: ILicense;
-    };
+    licensing: LicensingRequestHandlerContext;
   }
 }