Fix undefined errors in metrics reports (#607)

* Add global metrics init in startApp function

This update introduces the MetricsAccumulator to the global scope, allowing both master and worker processes to access metrics

* Remove global metrics declaration from worker service

This change eliminates the global metrics declaration and initialization from the worker service

* Release v7.2.1

Author: daniyelnnr

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [7.2.1] - 2025-09-08
+### Fixed
+- Ensure `global.metrics` is initialized in both master and worker processes to prevent undefined errors in status tracking and metrics reporting
+
 ## [7.2.0] - 2025-09-08
 ### Changed
 - Add metrics instrumentation based on diagnostics lib

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vtex/api",
-  "version": "7.2.0",
+  "version": "7.2.1",
   "description": "VTEX I/O API client",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",

src/service/index.ts

@@ -2,11 +2,16 @@ import { initializeTelemetry } from './telemetry'
 import cluster from 'cluster'
 
 import { HTTP_SERVER_PORT } from '../constants'
+import { MetricsAccumulator } from '../metrics/MetricsAccumulator'
 import { getServiceJSON } from './loaders'
 import { LogLevel, logOnceToDevConsole } from './logger'
 
 export const startApp = async () => {
   await initializeTelemetry()
+  
+  // Initialize global.metrics for both master and worker processes
+  global.metrics = new MetricsAccumulator()
+  
   const serviceJSON = getServiceJSON()
   try {
     // if it is a master process then call setting up worker process
@@ -27,3 +32,11 @@ export const startApp = async () => {
 
 export { appPath } from './loaders'
 
+declare global {
+  namespace NodeJS {
+    interface Global {
+      metrics: MetricsAccumulator
+    }
+  }
+}
+

src/service/worker/index.ts

@@ -267,13 +267,3 @@ export const startWorker = (serviceJSON: ServiceJSON) => {
 
   return app
 }
-
-global.metrics = new MetricsAccumulator()
-
-declare global {
-  namespace NodeJS {
-    interface Global {
-      metrics: MetricsAccumulator
-    }
-  }
-}