Add function to allow custom values in Ingress status

controllers/nginx/pkg/cmd/controller/nginx.go

@@ -35,6 +35,7 @@ import (
 
 	proxyproto "github.com/armon/go-proxyproto"
 	api_v1 "k8s.io/client-go/pkg/api/v1"
+	extensions "k8s.io/client-go/pkg/apis/extensions/v1beta1"
 
 	"k8s.io/ingress/controllers/nginx/pkg/config"
 	ngx_template "k8s.io/ingress/controllers/nginx/pkg/template"
@@ -296,6 +297,11 @@ func (n NGINXController) Info() *ingress.BackendInfo {
 func (n *NGINXController) ConfigureFlags(flags *pflag.FlagSet) {
 }
 
+// UpdateIngressStatus custom Ingress status update
+func (n *NGINXController) UpdateIngressStatus(*extensions.Ingress) []api_v1.LoadBalancerIngress {
+	return nil
+}
+
 // OverrideFlags customize NGINX controller flags
 func (n *NGINXController) OverrideFlags(flags *pflag.FlagSet) {
 	ic, _ := flags.GetString("ingress-class")

core/pkg/ingress/controller/controller.go

@@ -323,6 +323,7 @@ func newIngressController(config *Configuration) *GenericController {
 			IngressClass:           config.IngressClass,
 			DefaultIngressClass:    config.DefaultIngressClass,
 			UpdateStatusOnShutdown: config.UpdateStatusOnShutdown,
+			CustomIngressStatus:    ic.cfg.Backend.UpdateIngressStatus,
 		})
 	} else {
 		glog.Warning("Update of ingress status is disabled (flag --update-status=false was specified)")

core/pkg/ingress/status/status.go

@@ -62,6 +62,8 @@ type Config struct {
 
 	DefaultIngressClass string
 	IngressClass        string
+
+	CustomIngressStatus func(*extensions.Ingress) []api_v1.LoadBalancerIngress
 }
 
 // statusSync keeps the status IP in each Ingress rule updated executing a periodic check
@@ -300,6 +302,11 @@ func (s *statusSync) updateStatus(newIPs []api_v1.LoadBalancerIngress) {
 				return
 			}
 
+			addrs := s.CustomIngressStatus(currIng)
+			if addrs != nil {
+				newIPs = addrs
+			}
+
 			curIPs := currIng.Status.LoadBalancer.Ingress
 			sort.Sort(loadBalancerIngressByIP(curIPs))
 			if ingressSliceEqual(newIPs, curIPs) {

core/pkg/ingress/types.go

@@ -24,6 +24,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/apiserver/pkg/server/healthz"
 	api "k8s.io/client-go/pkg/api/v1"
+	extensions "k8s.io/client-go/pkg/apis/extensions/v1beta1"
 
 	"k8s.io/ingress/core/pkg/ingress/annotations/auth"
 	"k8s.io/ingress/core/pkg/ingress/annotations/authreq"
@@ -92,6 +93,10 @@ type Controller interface {
 	OverrideFlags(*pflag.FlagSet)
 	// DefaultIngressClass just return the default ingress class
 	DefaultIngressClass() string
+	// UpdateIngressStatus custom callback used to update the status in an Ingress rule
+	// This allows custom implementations
+	// If the function returns nil the standard functions will be executed.
+	UpdateIngressStatus(*extensions.Ingress) []api.LoadBalancerIngress
 }
 
 // StoreLister returns the configured stores for ingresses, services,