fix svc long name (#9245)

Signed-off-by: tombokombo <tombo@sysart.tech>

Signed-off-by: tombokombo <tombo@sysart.tech>

test/e2e/e2e.go

@@ -34,6 +34,7 @@ import (
 	_ "k8s.io/ingress-nginx/test/e2e/annotations/modsecurity"
 	_ "k8s.io/ingress-nginx/test/e2e/dbg"
 	_ "k8s.io/ingress-nginx/test/e2e/defaultbackend"
+	_ "k8s.io/ingress-nginx/test/e2e/endpointslices"
 	_ "k8s.io/ingress-nginx/test/e2e/gracefulshutdown"
 	_ "k8s.io/ingress-nginx/test/e2e/ingress"
 	_ "k8s.io/ingress-nginx/test/e2e/leaks"

test/e2e/endpointslices/longname.go

@@ -0,0 +1,55 @@
+/*
+Copyright 2022 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.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package endpointslices
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/onsi/ginkgo/v2"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.IngressNginxDescribe("[Endpointslices] long service name", func() {
+	f := framework.NewDefaultFramework("endpointslices")
+	host := "longsvcname.foo.com"
+	name := "long-name-foobar-foobar-foobar-foobar-foobar-bar-foo-bar-foobuz"
+
+	ginkgo.BeforeEach(func() {
+		f.NewEchoDeployment(framework.WithName(name))
+	})
+
+	ginkgo.It("should return 200 when service name has max allowed number of characters 63", func() {
+
+		annotations := make(map[string]string)
+		ing := framework.NewSingleIngress(host, "/", host, f.Namespace, name, 80, annotations)
+		f.EnsureIngress(ing)
+
+		f.WaitForNginxServer(host, func(server string) bool {
+			return strings.Contains(server, fmt.Sprintf("server_name %s", host))
+		})
+
+		ginkgo.By("checking if the service is reached")
+		f.HTTPTestClient().
+			GET("/").
+			WithHeader("Host", host).
+			Expect().
+			Status(http.StatusOK)
+	})
+})

test/e2e/framework/deployment.go

@@ -67,6 +67,12 @@ func WithDeploymentReplicas(r int) func(*deploymentOptions) {
 	}
 }
 
+func WithName(n string) func(*deploymentOptions) {
+	return func(o *deploymentOptions) {
+		o.name = n
+	}
+}
+
 // NewEchoDeployment creates a new single replica deployment of the echo server image in a particular namespace
 func (f *Framework) NewEchoDeployment(opts ...func(*deploymentOptions)) {
 	options := &deploymentOptions{