Merge pull request #3864 from alpeb/multihosts_servicename

ing.Service with multiple hosts fix

internal/ingress/controller/template/template.go

@@ -731,13 +731,19 @@ func (info *ingressInformation) Equal(other *ingressInformation) bool {
 	return true
 }
 
-func getIngressInformation(i, p interface{}) *ingressInformation {
+func getIngressInformation(i, h, p interface{}) *ingressInformation {
 	ing, ok := i.(*ingress.Ingress)
 	if !ok {
 		klog.Errorf("expected an '*ingress.Ingress' type but %T was returned", i)
 		return &ingressInformation{}
 	}
 
+	hostname, ok := h.(string)
+	if !ok {
+		klog.Errorf("expected a 'string' type but %T was returned", h)
+		return &ingressInformation{}
+	}
+
 	path, ok := p.(string)
 	if !ok {
 		klog.Errorf("expected a 'string' type but %T was returned", p)
@@ -763,6 +769,10 @@ func getIngressInformation(i, p interface{}) *ingressInformation {
 			continue
 		}
 
+		if hostname != "" && hostname != rule.Host {
+			continue
+		}
+
 		for _, rPath := range rule.HTTP.Paths {
 			if path == rPath.Path {
 				info.Service = rPath.Backend.ServiceName

internal/ingress/controller/template/template_test.go

@@ -832,16 +832,17 @@ func TestOpentracingPropagateContext(t *testing.T) {
 func TestGetIngressInformation(t *testing.T) {
 	validIngress := &ingress.Ingress{}
 	invalidIngress := "wrongtype"
+	host := "host1"
 	validPath := "/ok"
 	invalidPath := 10
 
-	info := getIngressInformation(invalidIngress, validPath)
+	info := getIngressInformation(invalidIngress, host, validPath)
 	expected := &ingressInformation{}
 	if !info.Equal(expected) {
 		t.Errorf("Expected %v, but got %v", expected, info)
 	}
 
-	info = getIngressInformation(validIngress, invalidPath)
+	info = getIngressInformation(validIngress, host, invalidPath)
 	if !info.Equal(expected) {
 		t.Errorf("Expected %v, but got %v", expected, info)
 	}
@@ -856,7 +857,7 @@ func TestGetIngressInformation(t *testing.T) {
 		ServiceName: "a-svc",
 	}
 
-	info = getIngressInformation(validIngress, validPath)
+	info = getIngressInformation(validIngress, host, validPath)
 	expected = &ingressInformation{
 		Namespace: "default",
 		Rule:      "validIng",
@@ -872,6 +873,7 @@ func TestGetIngressInformation(t *testing.T) {
 	validIngress.Spec.Backend = nil
 	validIngress.Spec.Rules = []extensions.IngressRule{
 		{
+			Host: host,
 			IngressRuleValue: extensions.IngressRuleValue{
 				HTTP: &extensions.HTTPIngressRuleValue{
 					Paths: []extensions.HTTPIngressPath{
@@ -888,7 +890,7 @@ func TestGetIngressInformation(t *testing.T) {
 		{},
 	}
 
-	info = getIngressInformation(validIngress, validPath)
+	info = getIngressInformation(validIngress, host, validPath)
 	expected = &ingressInformation{
 		Namespace: "default",
 		Rule:      "validIng",
@@ -900,6 +902,33 @@ func TestGetIngressInformation(t *testing.T) {
 	if !info.Equal(expected) {
 		t.Errorf("Expected %v, but got %v", expected, info)
 	}
+
+	validIngress.Spec.Rules = append(validIngress.Spec.Rules, extensions.IngressRule{
+		Host: "host2",
+		IngressRuleValue: extensions.IngressRuleValue{
+			HTTP: &extensions.HTTPIngressRuleValue{
+				Paths: []extensions.HTTPIngressPath{
+					{
+						Path: "/ok",
+						Backend: extensions.IngressBackend{
+							ServiceName: "c-svc",
+						},
+					},
+				},
+			},
+		},
+	})
+
+	info = getIngressInformation(validIngress, host, validPath)
+	if !info.Equal(expected) {
+		t.Errorf("Expected %v, but got %v", expected, info)
+	}
+
+	info = getIngressInformation(validIngress, "host2", validPath)
+	expected.Service = "c-svc"
+	if !info.Equal(expected) {
+		t.Errorf("Expected %v, but got %v", expected, info)
+	}
 }
 
 func TestBuildCustomErrorLocationsPerServer(t *testing.T) {

rootfs/etc/nginx/template/nginx.tmpl

@@ -1014,7 +1014,7 @@ stream {
         {{ end }}
 
         location {{ $path }} {
-            {{ $ing := (getIngressInformation $location.Ingress $location.Path) }}
+            {{ $ing := (getIngressInformation $location.Ingress $server.Hostname $location.Path) }}
             set $namespace      "{{ $ing.Namespace }}";
             set $ingress_name   "{{ $ing.Rule }}";
             set $service_name   "{{ $ing.Service }}";