From e4399413c115f7273d7a09628bf3e91d846afa55 Mon Sep 17 00:00:00 2001
From: "CTFang@WireLab" <ctfang.cs12@nycu.edu.tw>
Date: Fri, 22 Mar 2024 09:09:28 +0000
Subject: [PATCH] fix: error handling in RatingFunction

---
 pkg/rf/rating.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkg/rf/rating.go b/pkg/rf/rating.go
index d40fb32..44b74ae 100644
--- a/pkg/rf/rating.go
+++ b/pkg/rf/rating.go
@@ -162,7 +162,11 @@ func handleSUR() diam.HandlerFunc {
 		if err != nil {
 			logger.ChargingdataPostLog.Errorf("Get tarrif error: %+v", err)
 		}
-
+		if chargingInterface == nil {
+			logger.ChargingdataPostLog.Warningf(
+				"No ChargingData found for UE:[%+v] for RG:[%+v]", subscriberId, rg)
+			return
+		}
 		unitCostStr := chargingInterface["unitCost"].(string)
 		monetaryTariff := buildTaffif(unitCostStr)
 		unitCost := datatype.Unsigned32(monetaryTariff.RateElement.UnitCost.ValueDigits) *