prometheus + load-testing

apps/dispatch-server/routes/aircraft.ts

@@ -1,13 +1,7 @@
-import {
-	AdminMessage,
-	ConnectedAircraft,
-	getPublicUser,
-	MissionLog,
-	Prisma,
-	prisma,
-} from "@repo/db";
+import { AdminMessage, getPublicUser, MissionLog, Prisma, prisma } from "@repo/db";
 import { Router } from "express";
 import { io } from "../index";
+import { aircraftPatches } from "modules/prometheus";
 
 const router: Router = Router();
 
@@ -97,7 +91,7 @@ router.patch("/:id", async (req, res) => {
 				},
 			});
 		}
-
+		aircraftPatches.inc();
 		res.json(updatedConnectedAircraft);
 		// When change is only the estimated logout time, we don't need to emit an event
 		if (Object.keys(aircraftUpdate).length === 1 && aircraftUpdate.esimatedLogoutTime) return;

apps/dispatch-server/routes/metrics.ts

@@ -0,0 +1,9 @@
+import { Router } from "express";
+import { promRegister } from "modules/prometheus";
+
+export const metricsRouter: Router = Router();
+
+metricsRouter.get("/", async (req, res) => {
+	res.setHeader("Content-Type", promRegister.contentType);
+	res.end(await promRegister.metrics());
+});

apps/dispatch-server/routes/router.ts

@@ -4,6 +4,7 @@ import missionRouter from "./mission";
 import statusRouter from "./status";
 import aircraftsRouter from "./aircraft";
 import reportRouter from "./report";
+import { metricsRouter } from "routes/metrics";
 
 const router: Router = Router();
 
@@ -12,5 +13,6 @@ router.use("/mission", missionRouter);
 router.use("/status", statusRouter);
 router.use("/aircrafts", aircraftsRouter);
 router.use("/report", reportRouter);
+router.use("/metrics", metricsRouter);
 
 export default router;