feat: Feature lifecycle controller

src/lib/features/feature-lifecycle/feature-lifecycle-controller.ts

@@ -0,0 +1,86 @@
+import type { FeatureLifecycleService } from './feature-lifecycle-service';
+import {
+    type IFlagResolver,
+    type IUnleashConfig,
+    type IUnleashServices,
+    NONE,
+    serializeDates,
+} from '../../types';
+import type { OpenApiService } from '../../services';
+import {
+    createResponseSchema,
+    featureLifecycleSchema,
+    type FeatureLifecycleSchema,
+    getStandardResponses,
+} from '../../openapi';
+import Controller from '../../routes/controller';
+import type { Request, Response } from 'express';
+import { NotFoundError } from '../../error';
+
+interface FeatureLifecycleParams {
+    projectId: string;
+    featureName: string;
+}
+
+const PATH = '/:projectId/features/:featureName/lifecycle';
+
+export default class FeatureLifecycleController extends Controller {
+    private featureLifecycleService: FeatureLifecycleService;
+
+    private openApiService: OpenApiService;
+
+    private flagResolver: IFlagResolver;
+
+    constructor(
+        config: IUnleashConfig,
+        {
+            featureLifecycleService,
+            openApiService,
+        }: Pick<IUnleashServices, 'openApiService' | 'featureLifecycleService'>,
+    ) {
+        super(config);
+        this.featureLifecycleService = featureLifecycleService;
+        this.openApiService = openApiService;
+        this.flagResolver = config.flagResolver;
+
+        this.route({
+            method: 'get',
+            path: PATH,
+            handler: this.getFeatureLifecycle,
+            permission: NONE,
+            middleware: [
+                openApiService.validPath({
+                    tags: ['Unstable'],
+                    summary: 'Get feature lifecycle',
+                    description:
+                        'Information about the lifecycle stages of the feature.',
+                    operationId: 'getFeatureLifecycle',
+                    responses: {
+                        200: createResponseSchema('featureLifecycleSchema'),
+                        ...getStandardResponses(401, 403, 404),
+                    },
+                }),
+            ],
+        });
+    }
+
+    async getFeatureLifecycle(
+        req: Request<FeatureLifecycleParams, any, any, any>,
+        res: Response<FeatureLifecycleSchema>,
+    ): Promise<void> {
+        if (!this.flagResolver.isEnabled('featureLifecycle')) {
+            throw new NotFoundError('Feature lifecycle is disabled.');
+        }
+        const { featureName } = req.params;
+
+        const result =
+            await this.featureLifecycleService.getFeatureLifecycle(featureName);
+
+        this.openApiService.respondWithValidation(
+            200,
+            res,
+            featureLifecycleSchema.$id,
+            serializeDates(result),
+        );
+    }
+}

src/lib/features/feature-lifecycle/feature-lifecycle.e2e.test.ts

@@ -0,0 +1,52 @@
+import dbInit, { type ITestDb } from '../../../test/e2e/helpers/database-init';
+import {
+    type IUnleashTest,
+    setupAppWithAuth,
+} from '../../../test/e2e/helpers/test-helper';
+import getLogger from '../../../test/fixtures/no-logger';
+
+let app: IUnleashTest;
+let db: ITestDb;
+
+beforeAll(async () => {
+    db = await dbInit('feature_lifecycle', getLogger);
+    app = await setupAppWithAuth(
+        db.stores,
+        {
+            experimental: {
+                flags: {
+                    featureLifecycle: true,
+                },
+            },
+        },
+        db.rawDatabase,
+    );
+
+    await app.request
+        .post(`/auth/demo/login`)
+        .send({
+            email: 'user@getunleash.io',
+        })
+        .expect(200);
+});
+
+afterAll(async () => {
+    await app.destroy();
+    await db.destroy();
+});
+
+beforeEach(async () => {});
+
+const getFeatureLifecycle = async (featureName: string, expectedCode = 200) => {
+    return app.request
+        .get(`/api/admin/projects/default/features/${featureName}/lifecycle`)
+        .expect(expectedCode);
+};
+
+test('should return lifecycle stages', async () => {
+    await app.createFeature('my_feature_a');
+
+    const { body } = await getFeatureLifecycle('my_feature_a');
+
+    expect(body).toEqual([]);
+});

src/lib/features/project/project-controller.ts

@@ -40,6 +40,7 @@ import {
 import { projectApplicationsQueryParameters } from '../../openapi/spec/project-applications-query-parameters';
 import { normalizeQueryParams } from '../feature-search/search-utils';
 import ProjectInsightsController from '../project-insights/project-insights-controller';
+import FeatureLifecycleController from '../feature-lifecycle/feature-lifecycle-controller';
 
 export default class ProjectController extends Controller {
     private projectService: ProjectService;
@@ -181,6 +182,7 @@ export default class ProjectController extends Controller {
             ).router,
         );
         this.use('/', new ProjectInsightsController(config, services).router);
+        this.use('/', new FeatureLifecycleController(config, services).router);
     }
 
     async getProjects(

src/lib/openapi/spec/feature-lifecycle-schema.ts

@@ -0,0 +1,33 @@
+import type { FromSchema } from 'json-schema-to-ts';
+
+export const featureLifecycleSchema = {
+    $id: '#/components/schemas/featureLifecycleSchema',
+    type: 'array',
+    description: 'A list of lifecycle stages for a given feature',
+    items: {
+        additionalProperties: false,
+        type: 'object',
+        required: ['stage', 'enteredStageAt'],
+        properties: {
+            stage: {
+                type: 'string',
+                enum: ['initial', 'pre-live', 'live', 'completed', 'archived'],
+                example: 'initial',
+                description:
+                    'The name of the lifecycle stage that got recorded for a given feature',
+            },
+            enteredStageAt: {
+                type: 'string',
+                format: 'date-time',
+                example: '2023-01-28T16:21:39.975Z',
+                description: 'The date when the feature entered a given stage',
+            },
+        },
+        description: 'The lifecycle stage of the feature',
+    },
+    components: {
+        schemas: {},
+    },
+} as const;
+
+export type FeatureLifecycleSchema = FromSchema<typeof featureLifecycleSchema>;

src/lib/openapi/spec/index.ts

@@ -75,6 +75,7 @@ export * from './feature-dependencies-schema';
 export * from './feature-environment-metrics-schema';
 export * from './feature-environment-schema';
 export * from './feature-events-schema';
+export * from './feature-lifecycle-schema';
 export * from './feature-metrics-schema';
 export * from './feature-schema';
 export * from './feature-search-environment-schema';