fix staticcheck in test/e2e/network/

Author: tanjunchen

hack/.staticcheck_failures

@@ -69,7 +69,6 @@ test/e2e/autoscaling
 test/e2e/instrumentation/logging/stackdriver
 test/e2e/instrumentation/monitoring
 test/e2e/manifest
-test/e2e/network
 test/e2e/storage
 test/e2e/storage/drivers
 test/e2e/storage/testsuites

test/e2e/network/dns.go

@@ -212,7 +212,7 @@ var _ = SIGDescribe("DNS", func() {
 		// All the names we need to be able to resolve.
 		// for headless service.
 		namesToResolve := []string{
-			fmt.Sprintf("%s", headlessService.Name),
+			headlessService.Name,
 			fmt.Sprintf("%s.%s", headlessService.Name, f.Namespace.Name),
 			fmt.Sprintf("%s.%s.svc", headlessService.Name, f.Namespace.Name),
 			fmt.Sprintf("_http._tcp.%s.%s.svc", headlessService.Name, f.Namespace.Name),

test/e2e/network/dns_common.go

@@ -81,10 +81,6 @@ func (t *dnsTestCommon) init() {
 	}
 }
 
-func (t *dnsTestCommon) checkDNSRecord(name string, predicate func([]string) bool, timeout time.Duration) {
-	t.checkDNSRecordFrom(name, predicate, "kube-dns", timeout)
-}
-
 func (t *dnsTestCommon) checkDNSRecordFrom(name string, predicate func([]string) bool, target string, timeout time.Duration) {
 	var actual []string
 
@@ -118,7 +114,6 @@ func (t *dnsTestCommon) runDig(dnsName, target string) []string {
 	case "cluster-dns":
 	case "cluster-dns-ipv6":
 		cmd = append(cmd, "AAAA")
-		break
 	default:
 		panic(fmt.Errorf("invalid target: " + target))
 	}
@@ -269,6 +264,7 @@ func (t *dnsTestCommon) deleteCoreDNSPods() {
 	options := metav1.ListOptions{LabelSelector: label.String()}
 
 	pods, err := t.f.ClientSet.CoreV1().Pods("kube-system").List(options)
+	framework.ExpectNoError(err, "failed to list pods of kube-system with label %q", label.String())
 	podClient := t.c.CoreV1().Pods(metav1.NamespaceSystem)
 
 	for _, pod := range pods.Items {
@@ -614,14 +610,6 @@ func validateTargetedProbeOutput(f *framework.Framework, pod *v1.Pod, fileNames
 	framework.Logf("DNS probes using %s succeeded\n", pod.Name)
 }
 
-func reverseArray(arr []string) []string {
-	for i := 0; i < len(arr)/2; i++ {
-		j := len(arr) - i - 1
-		arr[i], arr[j] = arr[j], arr[i]
-	}
-	return arr
-}
-
 func generateDNSUtilsPod() *v1.Pod {
 	return &v1.Pod{
 		TypeMeta: metav1.TypeMeta{

test/e2e/network/ingress.go

@@ -181,7 +181,7 @@ var _ = SIGDescribe("Loadbalancing: L7", func() {
 				return true, nil
 			})
 			if pollErr != nil {
-				framework.ExpectNoError(fmt.Errorf("Timed out waiting for ingress %s to get %s annotation", name, instanceGroupAnnotation))
+				framework.ExpectNoError(fmt.Errorf("timed out waiting for ingress %s to get %s annotation", name, instanceGroupAnnotation))
 			}
 
 			// Verify that the ingress does not get other annotations like url-map, target-proxy, backends, etc.

test/e2e/network/kube_proxy.go

@@ -172,6 +172,8 @@ var _ = SIGDescribe("Network", func() {
 		}
 
 		jsonBytes, err := json.Marshal(options)
+		framework.ExpectNoError(err, "could not marshal")
+
 		cmd := fmt.Sprintf(
 			`curl -X POST http://localhost:%v/run/nat-closewait-client -d `+
 				`'%v' 2>/dev/null`,

test/e2e/network/network_tiers.go

@@ -134,7 +134,7 @@ var _ = SIGDescribe("Services [Feature:GCEAlphaFeature][Slow]", func() {
 		framework.ExpectEqual(svcTier, cloud.NetworkTierStandard)
 
 		// Wait until the ingress IP changes and verifies the LB.
-		ingressIP = waitAndVerifyLBWithTier(jig, ingressIP, createTimeout, lagTimeout)
+		waitAndVerifyLBWithTier(jig, ingressIP, createTimeout, lagTimeout)
 	})
 })
 

test/e2e/network/no_snat.go

@@ -24,7 +24,7 @@ import (
 	"strings"
 	"time"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/kubernetes/test/e2e/framework"
@@ -117,7 +117,7 @@ func getIP(iptype v1.NodeAddressType, node *v1.Node) (string, error) {
 
 func getSchedulable(nodes []v1.Node) (*v1.Node, error) {
 	for _, node := range nodes {
-		if node.Spec.Unschedulable == false {
+		if !node.Spec.Unschedulable {
 			return &node, nil
 		}
 	}

test/e2e/network/scale/ingress.go

@@ -23,7 +23,7 @@ import (
 	"time"
 
 	appsv1 "k8s.io/api/apps/v1"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	networkingv1beta1 "k8s.io/api/networking/v1beta1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/intstr"
@@ -118,7 +118,7 @@ func (f *IngressScaleFramework) PrepareScaleTest() error {
 		Cloud:  f.CloudConfig,
 	}
 	if err := f.GCEController.Init(); err != nil {
-		return fmt.Errorf("Failed to initialize GCE controller: %v", err)
+		return fmt.Errorf("failed to initialize GCE controller: %v", err)
 	}
 
 	f.ScaleTestSvcs = []*v1.Service{}
@@ -135,22 +135,22 @@ func (f *IngressScaleFramework) CleanupScaleTest() []error {
 	for _, ing := range f.ScaleTestIngs {
 		if ing != nil {
 			if err := f.Clientset.NetworkingV1beta1().Ingresses(ing.Namespace).Delete(ing.Name, nil); err != nil {
-				errs = append(errs, fmt.Errorf("Error while deleting ingress %s/%s: %v", ing.Namespace, ing.Name, err))
+				errs = append(errs, fmt.Errorf("error while deleting ingress %s/%s: %v", ing.Namespace, ing.Name, err))
 			}
 		}
 	}
 	f.Logger.Infof("Cleaning up services...")
 	for _, svc := range f.ScaleTestSvcs {
 		if svc != nil {
 			if err := f.Clientset.CoreV1().Services(svc.Namespace).Delete(svc.Name, nil); err != nil {
-				errs = append(errs, fmt.Errorf("Error while deleting service %s/%s: %v", svc.Namespace, svc.Name, err))
+				errs = append(errs, fmt.Errorf("error while deleting service %s/%s: %v", svc.Namespace, svc.Name, err))
 			}
 		}
 	}
 	if f.ScaleTestDeploy != nil {
 		f.Logger.Infof("Cleaning up deployment %s...", f.ScaleTestDeploy.Name)
 		if err := f.Clientset.AppsV1().Deployments(f.ScaleTestDeploy.Namespace).Delete(f.ScaleTestDeploy.Name, nil); err != nil {
-			errs = append(errs, fmt.Errorf("Error while delting deployment %s/%s: %v", f.ScaleTestDeploy.Namespace, f.ScaleTestDeploy.Name, err))
+			errs = append(errs, fmt.Errorf("error while delting deployment %s/%s: %v", f.ScaleTestDeploy.Namespace, f.ScaleTestDeploy.Name, err))
 		}
 	}
 
@@ -170,15 +170,15 @@ func (f *IngressScaleFramework) RunScaleTest() []error {
 	f.Logger.Infof("Creating deployment %s...", testDeploy.Name)
 	testDeploy, err := f.Jig.Client.AppsV1().Deployments(f.Namespace).Create(testDeploy)
 	if err != nil {
-		errs = append(errs, fmt.Errorf("Failed to create deployment %s: %v", testDeploy.Name, err))
+		errs = append(errs, fmt.Errorf("failed to create deployment %s: %v", testDeploy.Name, err))
 		return errs
 	}
 	f.ScaleTestDeploy = testDeploy
 
 	if f.EnableTLS {
 		f.Logger.Infof("Ensuring TLS secret %s...", scaleTestSecretName)
 		if err := f.Jig.PrepareTLSSecret(f.Namespace, scaleTestSecretName, scaleTestHostname); err != nil {
-			errs = append(errs, fmt.Errorf("Failed to prepare TLS secret %s: %v", scaleTestSecretName, err))
+			errs = append(errs, fmt.Errorf("failed to prepare TLS secret %s: %v", scaleTestSecretName, err))
 			return errs
 		}
 	}

test/e2e/network/service.go

@@ -933,24 +933,24 @@ var _ = SIGDescribe("Services", func() {
 		// Change the services back to ClusterIP.
 
 		ginkgo.By("changing TCP service back to type=ClusterIP")
-		tcpService, err = tcpJig.UpdateService(func(s *v1.Service) {
+		_, err = tcpJig.UpdateService(func(s *v1.Service) {
 			s.Spec.Type = v1.ServiceTypeClusterIP
 			s.Spec.Ports[0].NodePort = 0
 		})
 		framework.ExpectNoError(err)
 		// Wait for the load balancer to be destroyed asynchronously
-		tcpService, err = tcpJig.WaitForLoadBalancerDestroy(tcpIngressIP, svcPort, loadBalancerCreateTimeout)
+		_, err = tcpJig.WaitForLoadBalancerDestroy(tcpIngressIP, svcPort, loadBalancerCreateTimeout)
 		framework.ExpectNoError(err)
 
 		ginkgo.By("changing UDP service back to type=ClusterIP")
-		udpService, err = udpJig.UpdateService(func(s *v1.Service) {
+		_, err = udpJig.UpdateService(func(s *v1.Service) {
 			s.Spec.Type = v1.ServiceTypeClusterIP
 			s.Spec.Ports[0].NodePort = 0
 		})
 		framework.ExpectNoError(err)
 		if loadBalancerSupportsUDP {
 			// Wait for the load balancer to be destroyed asynchronously
-			udpService, err = udpJig.WaitForLoadBalancerDestroy(udpIngressIP, svcPort, loadBalancerCreateTimeout)
+			_, err = udpJig.WaitForLoadBalancerDestroy(udpIngressIP, svcPort, loadBalancerCreateTimeout)
 			framework.ExpectNoError(err)
 		}
 
@@ -1381,7 +1381,7 @@ var _ = SIGDescribe("Services", func() {
 		service = t.BuildServiceSpec()
 		service.Spec.Type = v1.ServiceTypeNodePort
 		service.Spec.Ports[0].NodePort = nodePort
-		service, err = t.CreateService(service)
+		_, err = t.CreateService(service)
 		framework.ExpectNoError(err, "failed to create service: %s in namespace: %s", serviceName, ns)
 	})
 
@@ -2516,12 +2516,12 @@ func execAffinityTestForNonLBServiceWithOptionalTransition(f *framework.Framewor
 		gomega.Expect(e2eservice.CheckAffinity(execPod, svcIP, servicePort, true)).To(gomega.BeTrue())
 	}
 	if isTransitionTest {
-		svc, err = jig.UpdateService(func(svc *v1.Service) {
+		_, err = jig.UpdateService(func(svc *v1.Service) {
 			svc.Spec.SessionAffinity = v1.ServiceAffinityNone
 		})
 		framework.ExpectNoError(err)
 		gomega.Expect(e2eservice.CheckAffinity(execPod, svcIP, servicePort, false)).To(gomega.BeTrue())
-		svc, err = jig.UpdateService(func(svc *v1.Service) {
+		_, err = jig.UpdateService(func(svc *v1.Service) {
 			svc.Spec.SessionAffinity = v1.ServiceAffinityClientIP
 		})
 		framework.ExpectNoError(err)

test/e2e/network/service_latency.go

@@ -258,11 +258,10 @@ func (eq *endpointQueries) join() {
 					delete(eq.requests, got.Name)
 					req.endpoints = got
 					close(req.result)
-				} else {
-					// We've already recorded a result, but
-					// haven't gotten the request yet. Only
-					// keep the first result.
 				}
+				// We've already recorded a result, but
+				// haven't gotten the request yet. Only
+				// keep the first result.
 			} else {
 				// We haven't gotten the corresponding request
 				// yet, save this result.
@@ -352,7 +351,7 @@ func singleServiceLatency(f *framework.Framework, name string, q *endpointQuerie
 	framework.Logf("Created: %v", gotSvc.Name)
 
 	if e := q.request(gotSvc.Name); e == nil {
-		return 0, fmt.Errorf("Never got a result for endpoint %v", gotSvc.Name)
+		return 0, fmt.Errorf("never got a result for endpoint %v", gotSvc.Name)
 	}
 	stopTime := time.Now()
 	d := stopTime.Sub(startTime)