Additional logging for AssignForwardingHandler

Additionally the remoteKMS within the AssignForwardingHandler is only
created if the addressPrefix is not an empty string.

goKMS/gnmiHandlers/kms/assignForwardingHandler.go

@@ -45,6 +45,8 @@ func (yh *AssignForwardingHandler) Update(c ygot.ValidatedGoStruct, jobs []*gnmi
 		return fmt.Errorf("failed type assertion for newConfig %T", (*gnmitargetygot.Gnmitarget)(nil))
 	}
 
+	log.Debugf("Received Update within AssignForwardingHandler")
+
 	forwarding := config.GetOrCreateAssignForwarding()
 
 	pathId := forwarding.GetPathId()
@@ -56,9 +58,11 @@ func (yh *AssignForwardingHandler) Update(c ygot.ValidatedGoStruct, jobs []*gnmi
 
 	if nextHop != nil {
 		nextHopString = nextHop.GetNodeId()
+		log.Debugf("AssignForwardingHandler - NextHopString: %s", nextHopString)
 	}
 	if prevHop != nil {
 		prevHopString = prevHop.GetNodeId()
+		log.Debugf("AssignForwardingHandler - PrevHopString: %s", prevHopString)
 	}
 
 	var initKMS *util.RemoteKMS
@@ -69,15 +73,16 @@ func (yh *AssignForwardingHandler) Update(c ygot.ValidatedGoStruct, jobs []*gnmi
 			addressPrefix = initiatingKmsAddress.GetIpAddress()
 		} else if initiatingKmsAddress.GetHostname() != "" {
 			addressPrefix = initiatingKmsAddress.GetHostname()
-		} else {
-			log.Error("initiatingKmsAddress must have either an IP address or a hostname")
-			return fmt.Errorf("initiatingKmsAddress must have either an IP address or a hostname")
 		}
 
-		initKMS = &util.RemoteKMS{
-			Id:      initiatingKmsAddress.GetNodeId(),
-			Address: addressPrefix,
-			Port:    initiatingKmsAddress.GetPort(),
+		log.Debugf("AssignForwardingHandler - InitiatingKMSAddress was set with the following parameters; NodeId: %s, Hostname: %s, IpAddress: %s, Port: %s", initiatingKmsAddress.GetNodeId(), initiatingKmsAddress.GetHostname(), initiatingKmsAddress.GetIpAddress(), initiatingKmsAddress.GetPort())
+
+		if addressPrefix != "" {
+			initKMS = &util.RemoteKMS{
+				Id:      initiatingKmsAddress.GetNodeId(),
+				Address: addressPrefix,
+				Port:    initiatingKmsAddress.GetPort(),
+			}
 		}
 	}