From 68b1bbdaaf0cbb4c9d573168e4ad4c26a0eb6f1b Mon Sep 17 00:00:00 2001
From: guillaumemichel <guillaume@michel.id>
Date: Wed, 7 May 2025 09:55:03 +0200
Subject: [PATCH] update slow consumer event error to warn

---
 p2p/host/eventbus/basic.go      |  3 ++-
 p2p/host/eventbus/basic_test.go | 10 ++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/p2p/host/eventbus/basic.go b/p2p/host/eventbus/basic.go
index af6a74bd02..32051f54fb 100644
--- a/p2p/host/eventbus/basic.go
+++ b/p2p/host/eventbus/basic.go
@@ -14,6 +14,7 @@ import (
 
 type logInterface interface {
 	Errorf(string, ...interface{})
+	Warnf(string, ...interface{})
 }
 
 var log logInterface = logging.Logger("eventbus")
@@ -464,7 +465,7 @@ func emitAndLogError(timer *time.Timer, typ reflect.Type, evt interface{}, sink
 			<-timer.C
 		}
 	case <-timer.C:
-		log.Errorf("subscriber named \"%s\" is a slow consumer of %s. This can lead to libp2p stalling and hard to debug issues.", sink.name, typ)
+		log.Warnf("subscriber named \"%s\" is a slow consumer of %s. This can lead to libp2p stalling and hard to debug issues.", sink.name, typ)
 		// Continue to stall since there's nothing else we can do.
 		sink.ch <- evt
 	}
diff --git a/p2p/host/eventbus/basic_test.go b/p2p/host/eventbus/basic_test.go
index 530a46ff19..b3fdb12e35 100644
--- a/p2p/host/eventbus/basic_test.go
+++ b/p2p/host/eventbus/basic_test.go
@@ -18,8 +18,10 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-type EventA struct{}
-type EventB int
+type (
+	EventA struct{}
+	EventB int
+)
 
 func getN() int {
 	n := 50000
@@ -144,6 +146,10 @@ func (m *mockLogger) Errorf(format string, args ...interface{}) {
 	m.logs = append(m.logs, fmt.Sprintf(format, args...))
 }
 
+func (m *mockLogger) Warnf(format string, args ...interface{}) {
+	m.Errorf(format, args...)
+}
+
 func (m *mockLogger) Logs() []string {
 	m.mu.Lock()
 	defer m.mu.Unlock()