NET-941: allows creation of gws without client node or egress ranges (#2822)

* allow creation of relay without relayed nodes

* allow creation of egress gw without egress ranges

* initalize empty egress ranges

logic/gateway.go

@@ -106,6 +106,9 @@ func CreateEgressGateway(gateway models.EgressGatewayRequest) (models.Node, erro
 	if err != nil {
 		return models.Node{}, err
 	}
+	if gateway.Ranges == nil {
+		gateway.Ranges = make([]string, 0)
+	}
 	node.IsEgressGateway = true
 	node.EgressGatewayRanges = gateway.Ranges
 	node.EgressGatewayNatEnabled = models.ParseBool(gateway.NatEnabled)
@@ -119,13 +122,7 @@ func CreateEgressGateway(gateway models.EgressGatewayRequest) (models.Node, erro
 
 // ValidateEgressGateway - validates the egress gateway model
 func ValidateEgressGateway(gateway models.EgressGatewayRequest) error {
-	var err error
-
-	empty := len(gateway.Ranges) == 0
-	if empty {
-		err = errors.New("IP Ranges Cannot Be Empty")
-	}
-	return err
+	return nil
 }
 
 // DeleteEgressGateway - deletes egress from node

pro/logic/relays.go

@@ -103,11 +103,7 @@ func SetRelayedNodes(setRelayed bool, relay string, relayed []string) []models.N
 // ValidateRelay - checks if relay is valid
 func ValidateRelay(relay models.RelayRequest) error {
 	var err error
-	// isIp := functions.IsIpCIDR(gateway.RangeString)
-	empty := len(relay.RelayedNodes) == 0
-	if empty {
-		return errors.New("IP Ranges Cannot Be Empty")
-	}
+
 	node, err := logic.GetNodeByID(relay.NodeID)
 	if err != nil {
 		return err