Try to make events work properly

src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta-controller.ts

@@ -73,6 +73,47 @@ export default class ClientFeatureToggleDeltaController extends Controller {
         });
     }
 
+    async getDelta(
+        req: IAuthRequest,
+        res: Response<RevisionDeltaEntry>,
+    ): Promise<void> {
+        if (!this.flagResolver.isEnabled('deltaApi')) {
+            throw new NotFoundError();
+        }
+        const query = await this.resolveQuery(req);
+        const etag = req.headers['if-none-match'];
+
+        const currentSdkRevisionId = etag ? Number.parseInt(etag) : undefined;
+
+        const changedFeatures =
+            await this.clientFeatureToggleService.getClientDelta(
+                currentSdkRevisionId,
+                query,
+            );
+
+        if (!changedFeatures) {
+            res.status(304);
+            res.getHeaderNames().forEach((header) => res.removeHeader(header));
+            res.end();
+            return;
+        }
+
+        if (changedFeatures.revisionId === currentSdkRevisionId) {
+            res.status(304);
+            res.getHeaderNames().forEach((header) => res.removeHeader(header));
+            res.end();
+            return;
+        }
+
+        res.setHeader('ETag', changedFeatures.revisionId.toString());
+        this.openApiService.respondWithValidation(
+            200,
+            res,
+            clientFeaturesDeltaSchema.$id,
+            changedFeatures,
+        );
+    }
+
     private async resolveQuery(
         req: IAuthRequest,
     ): Promise<IFeatureToggleQuery> {
@@ -139,45 +180,4 @@ export default class ClientFeatureToggleDeltaController extends Controller {
 
         return query;
     }
-
-    async getDelta(
-        req: IAuthRequest,
-        res: Response<RevisionDeltaEntry>,
-    ): Promise<void> {
-        if (!this.flagResolver.isEnabled('deltaApi')) {
-            throw new NotFoundError();
-        }
-        const query = await this.resolveQuery(req);
-        const etag = req.headers['if-none-match'];
-
-        const currentSdkRevisionId = etag ? Number.parseInt(etag) : undefined;
-
-        const changedFeatures =
-            await this.clientFeatureToggleService.getClientDelta(
-                currentSdkRevisionId,
-                query,
-            );
-
-        if (!changedFeatures) {
-            res.status(304);
-            res.getHeaderNames().forEach((header) => res.removeHeader(header));
-            res.end();
-            return;
-        }
-
-        if (changedFeatures.revisionId === currentSdkRevisionId) {
-            res.status(304);
-            res.getHeaderNames().forEach((header) => res.removeHeader(header));
-            res.end();
-            return;
-        }
-
-        res.setHeader('ETag', changedFeatures.revisionId.toString());
-        this.openApiService.respondWithValidation(
-            200,
-            res,
-            clientFeaturesDeltaSchema.$id,
-            changedFeatures,
-        );
-    }
 }

src/lib/features/client-feature-toggles/tests/client-feature-delta-api.e2e.test.ts

@@ -170,11 +170,24 @@ test('should match with /api/client/delta', async () => {
 test('should get 304 if asked for latest revision', async () => {
     await setupFeatures(db, app);
 
+    // const waitForEvent : Promise<void> = new Promise((resolve) => {
+    //     app.services.configurationRevisionService.once(UPDATE_REVISION, () => {
+    //         resolve();
+    //     });
+    // });
+
+    await app.services.configurationRevisionService.updateMaxRevisionId();
+    // app.services.configurationRevisionService.emit(UPDATE_REVISION);
+
+    await new Promise((resolve) => setTimeout(resolve, 100));
+
+    // await waitForEvent;
+
     const events = await db.rawDatabase('events').select('*');
     console.log(events);
 
     await app.request
-        .set('If-None-Match', '10')
+        .set('If-None-Match', '14')
         .get('/api/client/delta')
         .expect(304);
 });