Add e2e tests for grpc using https://grpcb.in

test/e2e/annotations/grpc.go

@@ -1,5 +1,5 @@
 /*
-Copyright 2017 The Kubernetes Authors.
+Copyright 2019 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -17,23 +17,31 @@ limitations under the License.
 package annotations
 
 import (
+	"crypto/tls"
 	"fmt"
+	"strings"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
+	pb "github.com/moul/pb/grpcbin/go-grpc"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	core "k8s.io/api/core/v1"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/intstr"
+
 	"k8s.io/ingress-nginx/test/e2e/framework"
 )
 
-var _ = framework.IngressNginxDescribe("Annotations - grpc", func() {
+var _ = framework.IngressNginxDescribe("Annotations - GRPC", func() {
 	f := framework.NewDefaultFramework("grpc")
 
-	BeforeEach(func() {
-		f.NewGRPCFortuneTellerDeployment()
-	})
-
-	Context("when grpc is enabled", func() {
 	It("should use grpc_pass in the configuration file", func() {
+		f.NewGRPCFortuneTellerDeployment()
+
 		host := "grpc"
 
 		annotations := map[string]string{
@@ -55,5 +63,123 @@ var _ = framework.IngressNginxDescribe("Annotations - grpc", func() {
 					Expect(server).ShouldNot(ContainSubstring("proxy_pass"))
 			})
 	})
+
+	It("should return OK for service with backend protocol GRPC", func() {
+		host := "echo"
+
+		svc := &core.Service{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "grpcbin",
+				Namespace: f.Namespace,
+			},
+			Spec: corev1.ServiceSpec{
+				ExternalName: "grpcb.in",
+				Type:         corev1.ServiceTypeExternalName,
+				Ports: []corev1.ServicePort{
+					{
+						Name:       host,
+						Port:       9000,
+						TargetPort: intstr.FromInt(9000),
+						Protocol:   "TCP",
+					},
+				},
+			},
+		}
+		f.EnsureService(svc)
+
+		annotations := &map[string]string{
+			"nginx.ingress.kubernetes.io/backend-protocol": "GRPC",
+		}
+
+		ing := framework.NewSingleIngressWithTLS(host, "/", host, []string{host}, f.Namespace, "grpcbin", 9000, annotations)
+
+		f.EnsureIngress(ing)
+
+		f.WaitForNginxServer(host,
+			func(server string) bool {
+				return strings.Contains(server, "grpc_pass grpc://upstream_balancer;")
+			})
+
+		conn, _ := grpc.Dial(f.GetNginxIP()+":443",
+			grpc.WithTransportCredentials(
+				credentials.NewTLS(&tls.Config{
+					ServerName:         "echo",
+					InsecureSkipVerify: true,
+				}),
+			),
+		)
+		defer conn.Close()
+
+		client := pb.NewGRPCBinClient(conn)
+		ctx := context.Background()
+
+		res, err := client.HeadersUnary(ctx, &pb.EmptyMessage{})
+		Expect(err).Should(BeNil())
+
+		metadata := res.GetMetadata()
+		Expect(metadata["x-original-uri"].Values[0]).Should(Equal("/grpcbin.GRPCBin/HeadersUnary"))
+		Expect(metadata["content-type"].Values[0]).Should(Equal("application/grpc"))
+	})
+
+	It("should return OK for service with backend protocol GRPCS", func() {
+		host := "echo"
+
+		svc := &core.Service{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "grpcbin",
+				Namespace: f.Namespace,
+			},
+			Spec: corev1.ServiceSpec{
+				ExternalName: "grpcb.in",
+				Type:         corev1.ServiceTypeExternalName,
+				Ports: []corev1.ServicePort{
+					{
+						Name:       host,
+						Port:       9001,
+						TargetPort: intstr.FromInt(9001),
+						Protocol:   "TCP",
+					},
+				},
+			},
+		}
+		f.EnsureService(svc)
+
+		annotations := &map[string]string{
+			"nginx.ingress.kubernetes.io/backend-protocol": "GRPCS",
+			"nginx.ingress.kubernetes.io/configuration-snippet": `
+			   # without this setting NGINX sends echo instead
+			   grpc_ssl_name      		grpcb.in;
+			   grpc_ssl_server_name		on;
+			   grpc_ssl_ciphers 		HIGH:!aNULL:!MD5;
+			`,
+		}
+
+		ing := framework.NewSingleIngressWithTLS(host, "/", host, []string{host}, f.Namespace, "grpcbin", 9001, annotations)
+		f.EnsureIngress(ing)
+
+		f.WaitForNginxServer(host,
+			func(server string) bool {
+				return strings.Contains(server, "grpc_pass grpcs://upstream_balancer;")
+			})
+
+		conn, _ := grpc.Dial(f.GetNginxIP()+":443",
+			grpc.WithTransportCredentials(
+				credentials.NewTLS(&tls.Config{
+					ServerName:         "echo",
+					InsecureSkipVerify: true,
+				}),
+			),
+		)
+		defer conn.Close()
+
+		client := pb.NewGRPCBinClient(conn)
+		ctx := context.Background()
+
+		res, err := client.HeadersUnary(ctx, &pb.EmptyMessage{})
+		Expect(err).Should(BeNil())
+
+		metadata := res.GetMetadata()
+		Expect(metadata["x-original-uri"].Values[0]).Should(Equal("/grpcbin.GRPCBin/HeadersUnary"))
+		Expect(metadata["content-type"].Values[0]).Should(Equal("application/grpc"))
 	})
 })