From 51003268ad8e74518b76bdb3584649a361803d2d Mon Sep 17 00:00:00 2001
From: enny791 <enny.adjb@gmail.com>
Date: Sat, 29 Aug 2026 14:39:44 +0100
Subject: [PATCH] feat(telemetry): add tracing correlation ID middleware

---
 src/middleware/tracing.middleware.ts | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 src/middleware/tracing.middleware.ts

diff --git a/src/middleware/tracing.middleware.ts b/src/middleware/tracing.middleware.ts
new file mode 100644
index 0000000..f014e64
--- /dev/null
+++ b/src/middleware/tracing.middleware.ts
@@ -0,0 +1,8 @@
+import { Request, Response, NextFunction } from 'express';
+import { v4 as uuidv4 } from 'uuid';
+
+export const tracingMiddleware = (req: Request, res: Response, next: NextFunction) => {
+  req.headers['x-correlation-id'] = req.headers['x-correlation-id'] || uuidv4();
+  res.setHeader('x-correlation-id', req.headers['x-correlation-id']);
+  next();
+};