add region to worker metrics

src/core/configuration/Config.ts

@@ -98,6 +98,7 @@ export interface ServerConfig {
   workerPort(gameID: GameID): number;
   workerPortByIndex(workerID: number): number;
   env(): GameEnv;
+  region(): string;
   adminToken(): string;
   adminHeader(): string;
   // Only available on the server

src/core/configuration/DefaultConfig.ts

@@ -23,6 +23,12 @@ import { pastelTheme } from "./PastelTheme";
 import { pastelThemeDark } from "./PastelThemeDark";
 
 export abstract class DefaultServerConfig implements ServerConfig {
+  region(): string {
+    if (this.env() == GameEnv.Dev) {
+      return "dev";
+    }
+    return process.env.REGION;
+  }
   gitCommit(): string {
     return process.env.GIT_COMMIT;
   }

src/server/WorkerMetrics.ts

@@ -1,5 +1,9 @@
 import promClient from "prom-client";
 import { GameManager } from "./GameManager";
+import { getServerConfigFromServer } from "../core/configuration/Config";
+
+const config = getServerConfigFromServer();
+const region = config.region();
 
 // Initialize the Prometheus registry
 const register = new promClient.Registry();
@@ -11,18 +15,21 @@ promClient.collectDefaultMetrics({ register });
 const activeGamesGauge = new promClient.Gauge({
   name: "openfont_active_games_count",
   help: "Number of active games on this worker",
+  labelNames: ["region"],
   registers: [register],
 });
 
 const connectedClientsGauge = new promClient.Gauge({
   name: "openfont_connected_clients_count",
   help: "Number of connected clients on this worker",
+  labelNames: ["region"],
   registers: [register],
 });
 
 const memoryUsageGauge = new promClient.Gauge({
   name: "openfont_memory_usage_bytes",
   help: "Current memory usage of the worker process in bytes",
+  labelNames: ["region"],
   registers: [register],
 });
 
@@ -35,11 +42,11 @@ export const metrics = {
 
   // Function to update game-related metrics
   updateGameMetrics: (gameManager: GameManager) => {
-    activeGamesGauge.set(gameManager.activeGames());
-    connectedClientsGauge.set(gameManager.activeClients());
+    activeGamesGauge.set({ region: region }, gameManager.activeGames());
+    connectedClientsGauge.set({ region: region }, gameManager.activeClients());
 
     // Update memory usage metrics
     const memoryUsage = process.memoryUsage();
-    memoryUsageGauge.set(memoryUsage.heapUsed);
+    memoryUsageGauge.set({ region: region }, memoryUsage.heapUsed);
   },
 };

tests/util/TestServerConfig.ts

@@ -3,6 +3,9 @@ import { GameMapType } from "../../src/core/game/Game";
 import { GameID } from "../../src/core/Schemas";
 
 export class TestServerConfig implements ServerConfig {
+  region(): string {
+    return "test";
+  }
   turnIntervalMs(): number {
     throw new Error("Method not implemented.");
   }

update.sh

@@ -86,6 +86,7 @@ docker run -d -p 80:80 -p 127.0.0.1:9090:9090 \
   --log-opt max-size=10m \
   --log-opt max-file=3 \
   --env GAME_ENV=${ENV} \
+  --env REGION=${REGION} \
   --env-file /root/.env \
   --name ${CONTAINER_NAME} \
   $FULL_IMAGE_NAME