fix metrics not stopping correctly, deadlocking the whole shutdown process

middleware/metrics.go

@@ -136,17 +136,12 @@ func (m *Metrics) Flush() {
 
 func (m *Metrics) Stop(ctx context.Context) {
 	log.Info().Msg("Stopping Request Metrics")
-	for len(m.c) > 0 {
-		select {
-		case rm := <-m.c:
-			m.calculateDuration(rm)
-		case <-ctx.Done():
 	m.stop <- struct{}{}
-			log.Warn().Msg("Hard Stopped Request Metrics")
-			return
-		}
+	// Drain remaining metrics
+	for len(m.c) > 0 {
+		rm := <-m.c
+		m.calculateDuration(rm)
 	}
 	m.Flush()
-	m.stop <- struct{}{}
 	log.Info().Msg("Stopped Request Metrics")
 }