add ability to set failover nodes

controllers/node.go

@@ -754,9 +754,10 @@ func deleteEgressGateway(w http.ResponseWriter, r *http.Request) {
 func createIngressGateway(w http.ResponseWriter, r *http.Request) {
 	var params = mux.Vars(r)
 	w.Header().Set("Content-Type", "application/json")
+	failover := r.Header.Get("failover") == "yes"
 	nodeid := params["nodeid"]
 	netid := params["network"]
-	node, err := logic.CreateIngressGateway(netid, nodeid)
+	node, err := logic.CreateIngressGateway(netid, nodeid, failover)
 	if err != nil {
 		logger.Log(0, r.Header.Get("user"),
 			fmt.Sprintf("failed to create ingress gateway on node [%s] on network [%s]: %v",

logic/gateway.go

@@ -172,7 +172,7 @@ func DeleteEgressGateway(network, nodeid string) (models.Node, error) {
 }
 
 // CreateIngressGateway - creates an ingress gateway
-func CreateIngressGateway(netid string, nodeid string) (models.Node, error) {
+func CreateIngressGateway(netid string, nodeid string, failover bool) (models.Node, error) {
 
 	var postUpCmd, postDownCmd string
 	node, err := GetNodeByID(nodeid)
@@ -224,7 +224,9 @@ func CreateIngressGateway(netid string, nodeid string) (models.Node, error) {
 	node.PostUp = postUpCmd
 	node.PostDown = postDownCmd
 	node.UDPHolePunch = "no"
-
+	if failover {
+		node.Failover = "yes"
+	}
 	data, err := json.Marshal(&node)
 	if err != nil {
 		return models.Node{}, err