Merge pull request #4329 from nailgun/4327-ingress-discovery-issue

discovery/kubernetes/ingress: fix TLS discovery

discovery/kubernetes/ingress.go

@@ -176,13 +176,22 @@ func (s *Ingress) buildIngress(ingress *v1beta1.Ingress) *targetgroup.Group {
 	}
 	tg.Labels = ingressLabels(ingress)
 
-	schema := "http"
+	tlsHosts := make(map[string]struct{})
-	if ingress.Spec.TLS != nil {
+	for _, tls := range ingress.Spec.TLS {
-		schema = "https"
+		for _, host := range tls.Hosts {
+			tlsHosts[host] = struct{}{}
 		}
+	}
+
 	for _, rule := range ingress.Spec.Rules {
 		paths := pathsFromIngressRule(&rule.IngressRuleValue)
 
+		schema := "http"
+		_, isTLS := tlsHosts[rule.Host]
+		if isTLS {
+			schema = "https"
+		}
+
 		for _, path := range paths {
 			tg.Targets = append(tg.Targets, model.LabelSet{
 				model.AddressLabel: lv(rule.Host),

discovery/kubernetes/ingress_test.go

@@ -23,8 +23,16 @@ import (
 	"k8s.io/client-go/pkg/apis/extensions/v1beta1"
 )
 
-func makeIngress(tls []v1beta1.IngressTLS) *v1beta1.Ingress {
+type TLSMode int
-	return &v1beta1.Ingress{
+
+const (
+	TLSNo TLSMode = iota
+	TLSYes
+	TLSMixed
+)
+
+func makeIngress(tls TLSMode) *v1beta1.Ingress {
+	ret := &v1beta1.Ingress{
 		ObjectMeta: metav1.ObjectMeta{
 			Name:        "testingress",
 			Namespace:   "default",
@@ -32,7 +40,7 @@ func makeIngress(tls []v1beta1.IngressTLS) *v1beta1.Ingress {
 			Annotations: map[string]string{"testannotation": "testannotationvalue"},
 		},
 		Spec: v1beta1.IngressSpec{
-			TLS: tls,
+			TLS: nil,
 			Rules: []v1beta1.IngressRule{
 				{
 					Host: "example.com",
@@ -63,31 +71,47 @@ func makeIngress(tls []v1beta1.IngressTLS) *v1beta1.Ingress {
 			},
 		},
 	}
+
+	switch tls {
+	case TLSYes:
+		ret.Spec.TLS = []v1beta1.IngressTLS{{Hosts: []string{"example.com", "test.example.com"}}}
+	case TLSMixed:
+		ret.Spec.TLS = []v1beta1.IngressTLS{{Hosts: []string{"example.com"}}}
+	}
+
+	return ret
 }
 
-func expectedTargetGroups(ns string, tls bool) map[string]*targetgroup.Group {
+func expectedTargetGroups(ns string, tls TLSMode) map[string]*targetgroup.Group {
-	scheme := "http"
+	scheme1 := "http"
-	if tls {
+	scheme2 := "http"
-		scheme = "https"
+
+	switch tls {
+	case TLSYes:
+		scheme1 = "https"
+		scheme2 = "https"
+	case TLSMixed:
+		scheme1 = "https"
 	}
+
 	key := fmt.Sprintf("ingress/%s/testingress", ns)
 	return map[string]*targetgroup.Group{
 		key: {
 			Targets: []model.LabelSet{
 				{
-					"__meta_kubernetes_ingress_scheme": lv(scheme),
+					"__meta_kubernetes_ingress_scheme": lv(scheme1),
 					"__meta_kubernetes_ingress_host":   "example.com",
 					"__meta_kubernetes_ingress_path":   "/",
 					"__address__":                      "example.com",
 				},
 				{
-					"__meta_kubernetes_ingress_scheme": lv(scheme),
+					"__meta_kubernetes_ingress_scheme": lv(scheme1),
 					"__meta_kubernetes_ingress_host":   "example.com",
 					"__meta_kubernetes_ingress_path":   "/foo",
 					"__address__":                      "example.com",
 				},
 				{
-					"__meta_kubernetes_ingress_scheme": lv(scheme),
+					"__meta_kubernetes_ingress_scheme": lv(scheme2),
 					"__meta_kubernetes_ingress_host":   "test.example.com",
 					"__address__":                      "test.example.com",
 					"__meta_kubernetes_ingress_path":   "/",
@@ -110,12 +134,12 @@ func TestIngressDiscoveryAdd(t *testing.T) {
 	k8sDiscoveryTest{
 		discovery: n,
 		afterStart: func() {
-			obj := makeIngress(nil)
+			obj := makeIngress(TLSNo)
 			c.ExtensionsV1beta1().Ingresses("default").Create(obj)
 			w.Ingresses().Add(obj)
 		},
 		expectedMaxItems: 1,
-		expectedRes:      expectedTargetGroups("default", false),
+		expectedRes:      expectedTargetGroups("default", TLSNo),
 	}.Run(t)
 }
 
@@ -125,27 +149,42 @@ func TestIngressDiscoveryAddTLS(t *testing.T) {
 	k8sDiscoveryTest{
 		discovery: n,
 		afterStart: func() {
-			obj := makeIngress([]v1beta1.IngressTLS{{}})
+			obj := makeIngress(TLSYes)
 			c.ExtensionsV1beta1().Ingresses("default").Create(obj)
 			w.Ingresses().Add(obj)
 		},
 		expectedMaxItems: 1,
-		expectedRes:      expectedTargetGroups("default", true),
+		expectedRes:      expectedTargetGroups("default", TLSYes),
+	}.Run(t)
+}
+
+func TestIngressDiscoveryAddMixed(t *testing.T) {
+	n, c, w := makeDiscovery(RoleIngress, NamespaceDiscovery{Names: []string{"default"}})
+
+	k8sDiscoveryTest{
+		discovery: n,
+		afterStart: func() {
+			obj := makeIngress(TLSMixed)
+			c.ExtensionsV1beta1().Ingresses("default").Create(obj)
+			w.Ingresses().Add(obj)
+		},
+		expectedMaxItems: 1,
+		expectedRes:      expectedTargetGroups("default", TLSMixed),
 	}.Run(t)
 }
 
 func TestIngressDiscoveryNamespaces(t *testing.T) {
 	n, c, w := makeDiscovery(RoleIngress, NamespaceDiscovery{Names: []string{"ns1", "ns2"}})
 
-	expected := expectedTargetGroups("ns1", false)
+	expected := expectedTargetGroups("ns1", TLSNo)
-	for k, v := range expectedTargetGroups("ns2", false) {
+	for k, v := range expectedTargetGroups("ns2", TLSNo) {
 		expected[k] = v
 	}
 	k8sDiscoveryTest{
 		discovery: n,
 		afterStart: func() {
 			for _, ns := range []string{"ns1", "ns2"} {
-				obj := makeIngress(nil)
+				obj := makeIngress(TLSNo)
 				obj.Namespace = ns
 				c.ExtensionsV1beta1().Ingresses(obj.Namespace).Create(obj)
 				w.Ingresses().Add(obj)