telemetry: Enable data fields that were disabled

#8617 disabled the telemetry
fields as those database queries were causing heavy CPU performance.

#8858 fixed that issue by
adding indexes for those queries.

This PR also adds tracing for the telemetry data provider so that we
can also count how long they take usually, and how frequently these
are called.

Signed-off-by: Tarun Pothulapati <tarun@gitpod.io>

components/server/src/installation-admin/installation-admin-controller.ts

@@ -6,6 +6,7 @@
 
 import { injectable, inject } from "inversify";
 import * as express from "express";
+import * as opentracing from "opentracing";
 import { InstallationAdminTelemetryDataProvider } from "./telemetry-data-provider";
 
 @injectable()
@@ -17,7 +18,14 @@ export class InstallationAdminController {
         const app = express();
 
         app.get("/data", async (req: express.Request, res: express.Response) => {
-            res.status(200).json(await this.telemetryDataProvider.getTelemetryData());
+            const spanCtx =
+                opentracing.globalTracer().extract(opentracing.FORMAT_HTTP_HEADERS, req.headers) || undefined;
+            const span = opentracing.globalTracer().startSpan("telemetryDataEndpoint", { childOf: spanCtx });
+            try {
+                res.status(200).json(await this.telemetryDataProvider.getTelemetryData());
+            } finally {
+                span.finish();
+            }
         });
 
         return app;

components/server/src/installation-admin/telemetry-data-provider.ts

@@ -7,6 +7,7 @@
 import { injectable, inject } from "inversify";
 
 import { TelemetryData } from "@gitpod/gitpod-protocol";
+import * as opentracing from "opentracing";
 import { InstallationAdminDB, UserDB, WorkspaceDB } from "@gitpod/gitpod-db/lib";
 
 @injectable()
@@ -16,13 +17,17 @@ export class InstallationAdminTelemetryDataProvider {
     @inject(WorkspaceDB) protected readonly workspaceDb: WorkspaceDB;
 
     async getTelemetryData(): Promise<TelemetryData> {
-        const data: TelemetryData = {
-            installationAdmin: await this.installationAdminDb.getData(),
-            totalUsers: 0, //await this.userDb.getUserCount(true),
-            totalWorkspaces: 0, //await this.workspaceDb.getWorkspaceCount(),
-            totalInstances: 0, //await this.workspaceDb.getInstanceCount(),
-        } as TelemetryData;
-
-        return data;
+        const span = opentracing.globalTracer().startSpan("getTelemetryData");
+        try {
+            const data: TelemetryData = {
+                installationAdmin: await this.installationAdminDb.getData(),
+                totalUsers: await this.userDb.getUserCount(true),
+                totalWorkspaces: await this.workspaceDb.getWorkspaceCount(),
+                totalInstances: await this.workspaceDb.getInstanceCount(),
+            } as TelemetryData;
+            return data;
+        } finally {
+            span.finish();
+        }
     }
 }