Fix listener host parsing in EnableListenerWafs method

- Add error logging for listener list retrieval
- Modify host extraction to use substring before port separator
- Improve error handling and logging in WAF service method

internal/service/waf.go

@@ -607,6 +607,7 @@ func (s *wafService) EnableListenerWafs(ctx context.Context, req *EnableListener
 
 	listenerList, err := client.WafV1alpha1().Services(req.Namespace).List(ctx, metav1.ListOptions{LabelSelector: fmt.Sprintf("apigateway_name=%s", req.GatewayName)})
 	if err != nil {
+		log.Error().Msgf("failed to get listener list: %v", err)
 		return err
 	}
 
@@ -641,7 +642,7 @@ func (s *wafService) EnableListenerWafs(ctx context.Context, req *EnableListener
 		desiredPortSet.Insert(portInt)
 		log.Info().Msgf("listener: %v", listener.Name)
 
-		hosts := strings.Split(listener.HostsAndPort, "@")
+		hosts := strings.Split(listener.HostsAndPort[:index], "@")
 		wafMap[portInt] = hosts
 	}