From 20ddbb53823b1a66031a2844b98f0e151dc2644b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Sch=C3=A4fer?= <git@marcschaeferger.de>
Date: Wed, 8 Oct 2025 08:12:20 +0200
Subject: [PATCH] fix(telemetry): update proxyStopper to be a no-op function
 when registration fails

---
 internal/telemetry/metrics.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/internal/telemetry/metrics.go b/internal/telemetry/metrics.go
index c6158fe..8c5e164 100644
--- a/internal/telemetry/metrics.go
+++ b/internal/telemetry/metrics.go
@@ -224,7 +224,9 @@ func SetProxyObservableCallback(cb func(context.Context, metric.Observer) error)
 		reg, e := meter.RegisterCallback(cb, mProxyActiveConns, mProxyBufferBytes, mProxyAsyncBacklogByte)
 		if e != nil {
 			otel.Handle(e)
-			proxyStopper = func() {}
+			proxyStopper = func() {
+				// no-op: registration failed; keep stopper callable
+			}
 			return
 		}
 		// Provide a functional stopper to unregister later if needed