fix: fix online charging problem in ULCL

internal/sbi/processor/ulcl_procedure.go

@@ -1,6 +1,7 @@
 package processor
 
 import (
+	"fmt"
 	"net"
 	"reflect"
 
@@ -157,6 +158,45 @@ func EstablishULCL(smContext *context.SMContext) {
 				}
 			}
 
+			// For online charging, create new URR
+			urrId := pduLevelChargingUrrs[0].URRID
+			if smContext.ChargingInfo[urrId].ChargingMethod == models.QuotaManagementIndicator_ONLINE_CHARGING {
+				var urr *context.URR
+				newChgInfo := &context.ChargingInfo{
+					RatingGroup:   smContext.ChargingInfo[urrId].RatingGroup,
+					ChargingLevel: smContext.ChargingInfo[urrId].ChargingLevel,
+					UpfId:         curDPNode.UPF.UUID(),
+				}
+
+				newUrrId, err := smContext.UrrIDGenerator.Allocate()
+				if err != nil {
+					logger.PduSessLog.Errorln("Generate URR Id failed")
+					return
+				}
+
+				currentUUID := curDPNode.UPF.UUID()
+				id := fmt.Sprintf("%s:%d", currentUUID, newUrrId)
+
+				if oldURR, ok := smContext.UrrUpfMap[id]; !ok {
+					if newURR, err2 := curDPNode.UPF.AddURR(uint32(newUrrId),
+						context.NewMeasureInformation(false, false),
+						context.SetStartOfSDFTrigger()); err2 != nil {
+						logger.PduSessLog.Errorln("new URR failed")
+						urr = pduLevelChargingUrrs[0]
+					} else {
+						urr = newURR
+						newChgInfo.ChargingMethod = models.QuotaManagementIndicator_ONLINE_CHARGING
+						smContext.UrrUpfMap[id] = urr
+					}
+				} else {
+					urr = oldURR
+				}
+				smContext.Log.Tracef("Successfully add URR %d for Rating group %d", urr.URRID, smContext.ChargingInfo[urrId].RatingGroup)
+				smContext.ChargingInfo[urr.URRID] = newChgInfo
+				pduLevelChargingUrrs = pduLevelChargingUrrs[:0]
+				pduLevelChargingUrrs = append(pduLevelChargingUrrs, urr)
+			}
+
 			// Append URRs to anchor UPF
 			if curDPNode.UpLinkTunnel != nil && curDPNode.UpLinkTunnel.PDR != nil {
 				curDPNode.UpLinkTunnel.PDR.AppendURRs(pduLevelChargingUrrs)