Fix golangci-lint errors (#10196)

* Fix golangci-lint errors

Signed-off-by: z1cheng <imchench@gmail.com>

* Fix dupl errors

Signed-off-by: z1cheng <imchench@gmail.com>

* Fix comments

Signed-off-by: z1cheng <imchench@gmail.com>

* Fix errcheck lint errors

Signed-off-by: z1cheng <imchench@gmail.com>

* Fix assert in e2e test

Signed-off-by: z1cheng <imchench@gmail.com>

* Not interrupt the waitForPodsReady

Signed-off-by: z1cheng <imchench@gmail.com>

* Replace string with constant

Signed-off-by: z1cheng <imchench@gmail.com>

* Fix comments

Signed-off-by: z1cheng <imchench@gmail.com>

* Revert write file permision

Signed-off-by: z1cheng <imchench@gmail.com>

---------

Signed-off-by: z1cheng <imchench@gmail.com>

cmd/dataplane/main.go

@@ -18,11 +18,12 @@ package main
 
 import (
 	"fmt"
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/collectors"
 	"net/http"
 	"os"
 
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/collectors"
+
 	"k8s.io/klog/v2"
 
 	"k8s.io/ingress-nginx/internal/ingress/controller"

cmd/dbg/main.go

@@ -114,7 +114,6 @@ func main() {
 		fmt.Println(err)
 		os.Exit(1)
 	}
-
 }
 
 func backendsAll() {
@@ -155,10 +154,16 @@ func backendsList() {
 		fmt.Println(unmarshalErr)
 		return
 	}
-	backends := f.([]interface{})
+	backends, ok := f.([]interface{})
+	if !ok {
+		fmt.Printf("unexpected type: %T", f)
+	}
 
 	for _, backendi := range backends {
-		backend := backendi.(map[string]interface{})
+		backend, ok := backendi.(map[string]interface{})
+		if !ok {
+			fmt.Printf("unexpected type: %T", backendi)
+		}
 		fmt.Println(backend["name"].(string))
 	}
 }
@@ -180,12 +185,22 @@ func backendsGet(name string) {
 		fmt.Println(unmarshalErr)
 		return
 	}
-	backends := f.([]interface{})
+	backends, ok := f.([]interface{})
+	if !ok {
+		fmt.Printf("unexpected type: %T", f)
+	}
 
 	for _, backendi := range backends {
-		backend := backendi.(map[string]interface{})
+		backend, ok := backendi.(map[string]interface{})
+		if !ok {
+			fmt.Printf("unexpected type: %T", backendi)
+		}
 		if backend["name"].(string) == name {
-			printed, _ := json.MarshalIndent(backend, "", "  ")
+			printed, err := json.MarshalIndent(backend, "", "  ")
+			if err != nil {
+				fmt.Println(err)
+				return
+			}
 			fmt.Println(string(printed))
 			return
 		}
@@ -213,18 +228,7 @@ func certGet(host string) {
 }
 
 func general() {
-	//TODO: refactor to obtain ingress-nginx pod count from the api server
-	/*
-		statusCode, body, requestErr := nginx.NewGetStatusRequest(generalPath)
-		if requestErr != nil {
-			fmt.Println(requestErr)
-			return
-		}
-		if statusCode != 200 {
-			fmt.Printf("Nginx returned code %v\n", statusCode)
-			return
-		}
-	*/
+	// TODO: refactor to obtain ingress-nginx pod count from the api server
 
 	var prettyBuffer bytes.Buffer
 	indentErr := json.Indent(&prettyBuffer, []byte("{}"), "", "  ")

cmd/nginx/logger.go

@@ -47,5 +47,4 @@ func logger(address string) {
 
 	server.Wait()
 	klog.Infof("Stopping logger")
-
 }

cmd/nginx/main.go

@@ -153,7 +153,6 @@ func main() {
 	if errExists == nil {
 		conf.IsChroot = true
 		go logger(conf.InternalLoggerAddress)
-
 	}
 
 	go metrics.StartHTTPServer(conf.HealthCheckHost, conf.ListenPorts.Health, mux)
@@ -282,10 +281,10 @@ func checkService(key string, kubeClient *kubernetes.Clientset) error {
 		}
 
 		if errors.IsNotFound(err) {
-			return fmt.Errorf("No service with name %v found in namespace %v: %v", name, ns, err)
+			return fmt.Errorf("no service with name %v found in namespace %v: %v", name, ns, err)
 		}
 
-		return fmt.Errorf("Unexpected error searching service with name %v in namespace %v: %v", name, ns, err)
+		return fmt.Errorf("unexpected error searching service with name %v in namespace %v: %v", name, ns, err)
 	}
 
 	return nil

cmd/nginx/main_test.go

@@ -47,7 +47,7 @@ func TestCreateApiserverClient(t *testing.T) {
 func init() {
 	// the default value of nginx.TemplatePath assumes the template exists in
 	// the root filesystem and not in the rootfs directory
-	path, err := filepath.Abs(filepath.Join("../../rootfs/", nginx.TemplatePath))
+	path, err := filepath.Abs(filepath.Join("..", "..", "rootfs", nginx.TemplatePath))
 	if err == nil {
 		nginx.TemplatePath = path
 	}
@@ -87,14 +87,14 @@ func TestHandleSigterm(t *testing.T) {
 
 	ingressflags.ResetForTesting(func() { t.Fatal("bad parse") })
 
-	os.Setenv("POD_NAME", podName)
-	os.Setenv("POD_NAMESPACE", namespace)
+	t.Setenv("POD_NAME", podName)
+	t.Setenv("POD_NAMESPACE", namespace)
 
 	oldArgs := os.Args
 
 	defer func() {
-		os.Setenv("POD_NAME", "")
-		os.Setenv("POD_NAMESPACE", "")
+		t.Setenv("POD_NAME", "")
+		t.Setenv("POD_NAMESPACE", "")
 		os.Args = oldArgs
 	}()
 

cmd/plugin/commands/backends/backends.go

@@ -63,13 +63,14 @@ func CreateCommand(flags *genericclioptions.ConfigFlags) *cobra.Command {
 	return cmd
 }
 
-func backends(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string, backend string, onlyList bool) error {
+func backends(flags *genericclioptions.ConfigFlags, podName, deployment, selector, container, backend string, onlyList bool) error {
 	var command []string
-	if onlyList {
+	switch {
+	case onlyList:
 		command = []string{"/dbg", "backends", "list"}
-	} else if backend != "" {
+	case backend != "":
 		command = []string{"/dbg", "backends", "get", backend}
-	} else {
+	default:
 		command = []string{"/dbg", "backends", "all"}
 	}
 

cmd/plugin/commands/certs/certs.go

@@ -59,7 +59,7 @@ func CreateCommand(flags *genericclioptions.ConfigFlags) *cobra.Command {
 	return cmd
 }
 
-func certs(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string, host string) error {
+func certs(flags *genericclioptions.ConfigFlags, podName, deployment, selector, container, host string) error {
 	command := []string{"/dbg", "certs", "get", host}
 
 	pod, err := request.ChoosePod(flags, podName, deployment, selector)

cmd/plugin/commands/conf/conf.go

@@ -55,7 +55,7 @@ func CreateCommand(flags *genericclioptions.ConfigFlags) *cobra.Command {
 	return cmd
 }
 
-func conf(flags *genericclioptions.ConfigFlags, host string, podName string, deployment string, selector string, container string) error {
+func conf(flags *genericclioptions.ConfigFlags, host, podName, deployment, selector, container string) error {
 	pod, err := request.ChoosePod(flags, podName, deployment, selector)
 	if err != nil {
 		return err

cmd/plugin/commands/exec/exec.go

@@ -55,7 +55,7 @@ type execFlags struct {
 	Stdin bool
 }
 
-func exec(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string, cmd []string, opts execFlags) error {
+func exec(flags *genericclioptions.ConfigFlags, podName, deployment, selector, container string, cmd []string, opts execFlags) error {
 	pod, err := request.ChoosePod(flags, podName, deployment, selector)
 	if err != nil {
 		return err

cmd/plugin/commands/general/general.go

@@ -47,7 +47,7 @@ func CreateCommand(flags *genericclioptions.ConfigFlags) *cobra.Command {
 	return cmd
 }
 
-func general(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string) error {
+func general(flags *genericclioptions.ConfigFlags, podName, deployment, selector, container string) error {
 	pod, err := request.ChoosePod(flags, podName, deployment, selector)
 	if err != nil {
 		return err

cmd/plugin/commands/ingresses/ingresses.go

@@ -74,9 +74,9 @@ func ingresses(flags *genericclioptions.ConfigFlags, host string, allNamespaces
 
 	if host != "" {
 		rowsWithHost := make([]ingressRow, 0)
-		for _, row := range rows {
-			if row.Host == host {
-				rowsWithHost = append(rowsWithHost, row)
+		for i := range rows {
+			if rows[i].Host == host {
+				rowsWithHost = append(rowsWithHost, rows[i])
 			}
 		}
 		rows = rowsWithHost
@@ -91,7 +91,8 @@ func ingresses(flags *genericclioptions.ConfigFlags, host string, allNamespaces
 		fmt.Fprintln(printer, "INGRESS NAME\tHOST+PATH\tADDRESSES\tTLS\tSERVICE\tSERVICE PORT\tENDPOINTS")
 	}
 
-	for _, row := range rows {
+	for i := range rows {
+		row := &rows[i]
 		var tlsMsg string
 		if row.TLS {
 			tlsMsg = "YES"
@@ -134,8 +135,8 @@ type ingressRow struct {
 func getIngressRows(ingresses *[]networking.Ingress) []ingressRow {
 	rows := make([]ingressRow, 0)
 
-	for _, ing := range *ingresses {
-
+	for i := range *ingresses {
+		ing := &(*ingresses)[i]
 		address := ""
 		for _, lbIng := range ing.Status.LoadBalancer.Ingress {
 			if len(lbIng.IP) > 0 {
@@ -182,7 +183,7 @@ func getIngressRows(ingresses *[]networking.Ingress) []ingressRow {
 		for _, rule := range ing.Spec.Rules {
 			_, hasTLS := tlsHosts[rule.Host]
 
-			//Handle ingress with no paths
+			// Handle ingress with no paths
 			if rule.HTTP == nil {
 				row := ingressRow{
 					Namespace:   ing.Namespace,

cmd/plugin/commands/ingresses/ingresses_test.go

@@ -24,7 +24,6 @@ import (
 )
 
 func TestGetIngressInformation(t *testing.T) {
-
 	testcases := map[string]struct {
 		ServiceBackend *networking.IngressServiceBackend
 		wantName       string

cmd/plugin/commands/lint/main.go

@@ -111,11 +111,13 @@ type lintOptions struct {
 }
 
 func (opts *lintOptions) Validate() error {
+	//nolint:dogsled // Ignore 3 blank identifiers
 	_, _, _, err := util.ParseVersionString(opts.versionFrom)
 	if err != nil {
 		return err
 	}
 
+	//nolint:dogsled // Ignore 3 blank identifiers
 	_, _, _, err = util.ParseVersionString(opts.versionTo)
 	if err != nil {
 		return err
@@ -131,9 +133,9 @@ type lint interface {
 	Version() string
 }
 
-func checkObjectArray(lints []lint, objects []kmeta.Object, opts lintOptions) {
+func checkObjectArray(allLints []lint, objects []kmeta.Object, opts lintOptions) {
 	usedLints := make([]lint, 0)
-	for _, lint := range lints {
+	for _, lint := range allLints {
 		lintVersion := lint.Version()
 		if lint.Version() == "" {
 			lintVersion = "0.0.0"
@@ -189,7 +191,7 @@ func ingresses(opts lintOptions) error {
 		return err
 	}
 
-	var iLints []lints.IngressLint = lints.GetIngressLints()
+	iLints := lints.GetIngressLints()
 	genericLints := make([]lint, len(iLints))
 	for i := range iLints {
 		genericLints[i] = iLints[i]
@@ -216,7 +218,7 @@ func deployments(opts lintOptions) error {
 		return err
 	}
 
-	var iLints []lints.DeploymentLint = lints.GetDeploymentLints()
+	iLints := lints.GetDeploymentLints()
 	genericLints := make([]lint, len(iLints))
 	for i := range iLints {
 		genericLints[i] = iLints[i]

cmd/plugin/commands/logs/logs.go

@@ -95,7 +95,7 @@ func (o *logsFlags) toStrings() []string {
 	return r
 }
 
-func logs(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string, opts logsFlags) error {
+func logs(flags *genericclioptions.ConfigFlags, podName, deployment, selector, container string, opts logsFlags) error {
 	pod, err := request.ChoosePod(flags, podName, deployment, selector)
 	if err != nil {
 		return err

cmd/plugin/commands/ssh/ssh.go

@@ -45,7 +45,7 @@ func CreateCommand(flags *genericclioptions.ConfigFlags) *cobra.Command {
 	return cmd
 }
 
-func ssh(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string) error {
+func ssh(flags *genericclioptions.ConfigFlags, podName, deployment, selector, container string) error {
 	pod, err := request.ChoosePod(flags, podName, deployment, selector)
 	if err != nil {
 		return err

cmd/plugin/kubectl/kubectl.go

@@ -38,11 +38,11 @@ func PodExecString(flags *genericclioptions.ConfigFlags, pod *apiv1.Pod, contain
 
 // ExecToString runs a kubectl subcommand and returns stdout as a string
 func ExecToString(flags *genericclioptions.ConfigFlags, args []string) (string, error) {
-	kArgs := getKubectlConfigFlags(flags)
-	kArgs = append(kArgs, args...)
+	kubectlArgs := getKubectlConfigFlags(flags)
+	kubectlArgs = append(kubectlArgs, args...)
 
 	buf := bytes.NewBuffer(make([]byte, 0))
-	err := execToWriter(append([]string{"kubectl"}, kArgs...), buf)
+	err := execToWriter(append([]string{"kubectl"}, kubectlArgs...), buf)
 	if err != nil {
 		return "", err
 	}
@@ -51,9 +51,9 @@ func ExecToString(flags *genericclioptions.ConfigFlags, args []string) (string,
 
 // Exec replaces the current process with a kubectl invocation
 func Exec(flags *genericclioptions.ConfigFlags, args []string) error {
-	kArgs := getKubectlConfigFlags(flags)
-	kArgs = append(kArgs, args...)
-	return execCommand(append([]string{"kubectl"}, kArgs...))
+	kubectlArgs := getKubectlConfigFlags(flags)
+	kubectlArgs = append(kubectlArgs, args...)
+	return execCommand(append([]string{"kubectl"}, kubectlArgs...))
 }
 
 // Replaces the currently running process with the given command
@@ -70,6 +70,7 @@ func execCommand(args []string) error {
 
 // Runs a command and returns stdout
 func execToWriter(args []string, writer io.Writer) error {
+	//nolint:gosec // Ignore G204 error
 	cmd := exec.Command(args[0], args[1:]...)
 
 	op, err := cmd.StdoutPipe()
@@ -78,7 +79,7 @@ func execToWriter(args []string, writer io.Writer) error {
 	}
 
 	go func() {
-		io.Copy(writer, op) //nolint:errcheck
+		io.Copy(writer, op) //nolint:errcheck // Ignore the error
 	}()
 	err = cmd.Run()
 	if err != nil {
@@ -106,7 +107,6 @@ func getKubectlConfigFlags(flags *genericclioptions.ConfigFlags) []string {
 	appendStringFlag(o, flags.Password, "password")
 	appendStringFlag(o, flags.ClusterName, "cluster")
 	appendStringFlag(o, flags.AuthInfoName, "user")
-	//appendStringFlag(o, flags.Namespace, "namespace")
 	appendStringFlag(o, flags.Context, "context")
 	appendStringFlag(o, flags.APIServer, "server")
 	appendBoolFlag(o, flags.Insecure, "insecure-skip-tls-verify")
@@ -128,7 +128,7 @@ func appendBoolFlag(out *[]string, in *bool, flag string) {
 	}
 }
 
-func appendStringArrayFlag(out *[]string, in *[]string, flag string) {
+func appendStringArrayFlag(out, in *[]string, flag string) {
 	if in != nil && len(*in) > 0 {
 		*out = append(*out, fmt.Sprintf("--%v=%v'", flag, strings.Join(*in, ",")))
 	}

cmd/plugin/lints/deployment.go

@@ -35,7 +35,10 @@ type DeploymentLint struct {
 
 // Check returns true if the lint detects an issue
 func (lint DeploymentLint) Check(obj kmeta.Object) bool {
-	cmp := obj.(*v1.Deployment)
+	cmp, ok := obj.(*v1.Deployment)
+	if !ok {
+		util.PrintError(fmt.Errorf("unexpected type: %T", obj))
+	}
 	return lint.f(*cmp)
 }
 
@@ -72,11 +75,11 @@ func removedFlag(flag string, issueNumber int, version string) DeploymentLint {
 		issue:   issueNumber,
 		version: version,
 		f: func(dep v1.Deployment) bool {
-			if !isIngressNginxDeployment(dep) {
+			if !isIngressNginxDeployment(&dep) {
 				return false
 			}
 
-			args := getNginxArgs(dep)
+			args := getNginxArgs(&dep)
 			for _, arg := range args {
 				if strings.HasPrefix(arg, fmt.Sprintf("--%v", flag)) {
 					return true
@@ -88,8 +91,9 @@ func removedFlag(flag string, issueNumber int, version string) DeploymentLint {
 	}
 }
 
-func getNginxArgs(dep v1.Deployment) []string {
-	for _, container := range dep.Spec.Template.Spec.Containers {
+func getNginxArgs(dep *v1.Deployment) []string {
+	for i := range dep.Spec.Template.Spec.Containers {
+		container := &dep.Spec.Template.Spec.Containers[i]
 		if len(container.Args) > 0 && container.Args[0] == "/nginx-ingress-controller" {
 			return container.Args
 		}
@@ -97,10 +101,10 @@ func getNginxArgs(dep v1.Deployment) []string {
 	return make([]string, 0)
 }
 
-func isIngressNginxDeployment(dep v1.Deployment) bool {
+func isIngressNginxDeployment(dep *v1.Deployment) bool {
 	containers := dep.Spec.Template.Spec.Containers
-	for _, container := range containers {
-		if len(container.Args) > 0 && container.Args[0] == "/nginx-ingress-controller" {
+	for i := range containers {
+		if len(containers[i].Args) > 0 && containers[i].Args[0] == "/nginx-ingress-controller" {
 			return true
 		}
 	}

cmd/plugin/lints/ingress.go

@@ -30,13 +30,16 @@ type IngressLint struct {
 	message string
 	issue   int
 	version string
-	f       func(ing networking.Ingress) bool
+	f       func(ing *networking.Ingress) bool
 }
 
 // Check returns true if the lint detects an issue
 func (lint IngressLint) Check(obj kmeta.Object) bool {
-	ing := obj.(*networking.Ingress)
-	return lint.f(*ing)
+	ing, ok := obj.(*networking.Ingress)
+	if !ok {
+		util.PrintError(fmt.Errorf("unexpected type: %T", obj))
+	}
+	return lint.f(ing)
 }
 
 // Message is a description of the lint
@@ -94,7 +97,7 @@ func GetIngressLints() []IngressLint {
 	}
 }
 
-func xForwardedPrefixIsBool(ing networking.Ingress) bool {
+func xForwardedPrefixIsBool(ing *networking.Ingress) bool {
 	for name, val := range ing.Annotations {
 		if strings.HasSuffix(name, "/x-forwarded-prefix") && (val == "true" || val == "false") {
 			return true
@@ -103,7 +106,7 @@ func xForwardedPrefixIsBool(ing networking.Ingress) bool {
 	return false
 }
 
-func annotationPrefixIsNginxCom(ing networking.Ingress) bool {
+func annotationPrefixIsNginxCom(ing *networking.Ingress) bool {
 	for name := range ing.Annotations {
 		if strings.HasPrefix(name, "nginx.com/") {
 			return true
@@ -112,7 +115,7 @@ func annotationPrefixIsNginxCom(ing networking.Ingress) bool {
 	return false
 }
 
-func annotationPrefixIsNginxOrg(ing networking.Ingress) bool {
+func annotationPrefixIsNginxOrg(ing *networking.Ingress) bool {
 	for name := range ing.Annotations {
 		if strings.HasPrefix(name, "nginx.org/") {
 			return true
@@ -121,7 +124,7 @@ func annotationPrefixIsNginxOrg(ing networking.Ingress) bool {
 	return false
 }
 
-func rewriteTargetWithoutCaptureGroup(ing networking.Ingress) bool {
+func rewriteTargetWithoutCaptureGroup(ing *networking.Ingress) bool {
 	for name, val := range ing.Annotations {
 		if strings.HasSuffix(name, "/rewrite-target") && !strings.Contains(val, "$1") {
 			return true
@@ -135,7 +138,7 @@ func removedAnnotation(annotationName string, issueNumber int, version string) I
 		message: fmt.Sprintf("Contains the removed %v annotation.", annotationName),
 		issue:   issueNumber,
 		version: version,
-		f: func(ing networking.Ingress) bool {
+		f: func(ing *networking.Ingress) bool {
 			for annotation := range ing.Annotations {
 				if strings.HasSuffix(annotation, "/"+annotationName) {
 					return true
@@ -146,7 +149,7 @@ func removedAnnotation(annotationName string, issueNumber int, version string) I
 	}
 }
 
-func satisfyDirective(ing networking.Ingress) bool {
+func satisfyDirective(ing *networking.Ingress) bool {
 	for name, val := range ing.Annotations {
 		if strings.HasSuffix(name, "/configuration-snippet") {
 			return strings.Contains(val, "satisfy")

cmd/plugin/main.go

@@ -24,7 +24,7 @@ import (
 
 	"k8s.io/cli-runtime/pkg/genericclioptions"
 
-	//Just importing this is supposed to allow cloud authentication
+	// Just importing this is supposed to allow cloud authentication
 	// eg GCP, AWS, Azure ...
 	_ "k8s.io/client-go/plugin/pkg/client/auth"
 

cmd/plugin/request/request.go

@@ -35,7 +35,7 @@ import (
 )
 
 // ChoosePod finds a pod either by deployment or by name
-func ChoosePod(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string) (apiv1.Pod, error) {
+func ChoosePod(flags *genericclioptions.ConfigFlags, podName, deployment, selector string) (apiv1.Pod, error) {
 	if podName != "" {
 		return GetNamedPod(flags, podName)
 	}
@@ -54,9 +54,9 @@ func GetNamedPod(flags *genericclioptions.ConfigFlags, name string) (apiv1.Pod,
 		return apiv1.Pod{}, err
 	}
 
-	for _, pod := range allPods {
-		if pod.Name == name {
-			return pod, nil
+	for i := range allPods {
+		if allPods[i].Name == name {
+			return allPods[i], nil
 		}
 	}
 
@@ -132,7 +132,7 @@ func GetIngressDefinitions(flags *genericclioptions.ConfigFlags, namespace strin
 }
 
 // GetNumEndpoints counts the number of endpointslices adresses for the service with the given name
-func GetNumEndpoints(flags *genericclioptions.ConfigFlags, namespace string, serviceName string) (*int, error) {
+func GetNumEndpoints(flags *genericclioptions.ConfigFlags, namespace, serviceName string) (*int, error) {
 	epss, err := GetEndpointSlicesByName(flags, namespace, serviceName)
 	if err != nil {
 		return nil, err
@@ -143,25 +143,26 @@ func GetNumEndpoints(flags *genericclioptions.ConfigFlags, namespace string, ser
 	}
 
 	ret := 0
-	for _, eps := range epss {
-		for _, ep := range eps.Endpoints {
-			ret += len(ep.Addresses)
+	for i := range epss {
+		eps := &epss[i]
+		for j := range eps.Endpoints {
+			ret += len(eps.Endpoints[j].Addresses)
 		}
 	}
 	return &ret, nil
 }
 
 // GetEndpointSlicesByName returns the endpointSlices for the service with the given name
-func GetEndpointSlicesByName(flags *genericclioptions.ConfigFlags, namespace string, name string) ([]discoveryv1.EndpointSlice, error) {
+func GetEndpointSlicesByName(flags *genericclioptions.ConfigFlags, namespace, name string) ([]discoveryv1.EndpointSlice, error) {
 	allEndpointsSlices, err := getEndpointSlices(flags, namespace)
 	if err != nil {
 		return nil, err
 	}
 	var eps []discoveryv1.EndpointSlice
-	for _, slice := range allEndpointsSlices {
-		if svcName, ok := slice.ObjectMeta.GetLabels()[discoveryv1.LabelServiceName]; ok {
+	for i := range allEndpointsSlices {
+		if svcName, ok := allEndpointsSlices[i].ObjectMeta.GetLabels()[discoveryv1.LabelServiceName]; ok {
 			if svcName == name {
-				eps = append(eps, slice)
+				eps = append(eps, allEndpointsSlices[i])
 			}
 		}
 	}
@@ -182,7 +183,7 @@ func getEndpointSlices(flags *genericclioptions.ConfigFlags, namespace string) (
 		tryAllNamespacesEndpointSlicesCache(flags)
 	}
 
-	cachedEndpointSlices = tryFilteringEndpointSlicesFromAllNamespacesCache(flags, namespace)
+	cachedEndpointSlices = tryFilteringEndpointSlicesFromAllNamespacesCache(namespace)
 
 	if cachedEndpointSlices != nil {
 		return *cachedEndpointSlices, nil
@@ -217,13 +218,13 @@ func tryAllNamespacesEndpointSlicesCache(flags *genericclioptions.ConfigFlags) {
 	}
 }
 
-func tryFilteringEndpointSlicesFromAllNamespacesCache(flags *genericclioptions.ConfigFlags, namespace string) *[]discoveryv1.EndpointSlice {
+func tryFilteringEndpointSlicesFromAllNamespacesCache(namespace string) *[]discoveryv1.EndpointSlice {
 	allEndpointSlices := endpointSlicesCache[""]
 	if allEndpointSlices != nil {
 		endpointSlices := make([]discoveryv1.EndpointSlice, 0)
-		for _, slice := range *allEndpointSlices {
-			if slice.Namespace == namespace {
-				endpointSlices = append(endpointSlices, slice)
+		for i := range *allEndpointSlices {
+			if (*allEndpointSlices)[i].Namespace == namespace {
+				endpointSlices = append(endpointSlices, (*allEndpointSlices)[i])
 			}
 		}
 		endpointSlicesCache[namespace] = &endpointSlices
@@ -242,9 +243,9 @@ func GetServiceByName(flags *genericclioptions.ConfigFlags, name string, service
 		services = &servicesArray
 	}
 
-	for _, svc := range *services {
-		if svc.Name == name {
-			return svc, nil
+	for i := range *services {
+		if (*services)[i].Name == name {
+			return (*services)[i], nil
 		}
 	}
 
@@ -288,7 +289,6 @@ func getLabeledPods(flags *genericclioptions.ConfigFlags, label string) ([]apiv1
 	pods, err := api.Pods(namespace).List(context.TODO(), metav1.ListOptions{
 		LabelSelector: label,
 	})
-
 	if err != nil {
 		return make([]apiv1.Pod, 0), err
 	}
@@ -303,9 +303,9 @@ func getDeploymentPods(flags *genericclioptions.ConfigFlags, deployment string)
 	}
 
 	ingressPods := make([]apiv1.Pod, 0)
-	for _, pod := range pods {
-		if util.PodInDeployment(pod, deployment) {
-			ingressPods = append(ingressPods, pod)
+	for i := range pods {
+		if util.PodInDeployment(&pods[i], deployment) {
+			ingressPods = append(ingressPods, pods[i])
 		}
 	}
 
@@ -331,5 +331,4 @@ func getServices(flags *genericclioptions.ConfigFlags) ([]apiv1.Service, error)
 	}
 
 	return services.Items, nil
-
 }

cmd/plugin/util/util.go

@@ -47,17 +47,25 @@ func PrintError(e error) {
 }
 
 // ParseVersionString returns the major, minor, and patch numbers of a version string
-func ParseVersionString(v string) (int, int, int, error) {
+func ParseVersionString(v string) (major, minor, patch int, err error) {
 	parts := versionRegex.FindStringSubmatch(v)
 
 	if len(parts) != 4 {
 		return 0, 0, 0, fmt.Errorf("could not parse %v as a version string (like 0.20.3)", v)
 	}
 
-	major, _ := strconv.Atoi(parts[1])
-	minor, _ := strconv.Atoi(parts[2])
-	patch, _ := strconv.Atoi(parts[3])
-
+	major, err = strconv.Atoi(parts[1])
+	if err != nil {
+		return 0, 0, 0, err
+	}
+	minor, err = strconv.Atoi(parts[2])
+	if err != nil {
+		return 0, 0, 0, err
+	}
+	patch, err = strconv.Atoi(parts[3])
+	if err != nil {
+		return 0, 0, 0, err
+	}
 	return major, minor, patch, nil
 }
 
@@ -90,7 +98,7 @@ func isVersionLessThan(a, b string) bool {
 
 // PodInDeployment returns whether a pod is part of a deployment with the given name
 // a pod is considered to be in {deployment} if it is owned by a replicaset with a name of format {deployment}-otherchars
-func PodInDeployment(pod apiv1.Pod, deployment string) bool {
+func PodInDeployment(pod *apiv1.Pod, deployment string) bool {
 	for _, owner := range pod.OwnerReferences {
 		if owner.Controller == nil || !*owner.Controller || owner.Kind != "ReplicaSet" {
 			continue
@@ -138,7 +146,7 @@ func AddContainerFlag(cmd *cobra.Command) *string {
 // GetNamespace takes a set of kubectl flag values and returns the namespace we should be operating in
 func GetNamespace(flags *genericclioptions.ConfigFlags) string {
 	namespace, _, err := flags.ToRawKubeConfigLoader().Namespace()
-	if err != nil || len(namespace) == 0 {
+	if err != nil || namespace == "" {
 		namespace = apiv1.NamespaceDefault
 	}
 	return namespace

docs/e2e-tests.md

@@ -716,7 +716,7 @@ Do not try to edit it manually.
 
 ### [[Flag] watch namespace selector](https://github.com/kubernetes/ingress-nginx/tree/main/test/e2e/settings/namespace_selector.go#L30)
 
-- [should ingore Ingress of namespace without label foo=bar and accept those of namespace with label foo=bar](https://github.com/kubernetes/ingress-nginx/tree/main/test/e2e/settings/namespace_selector.go#L63)
+- [should ignore Ingress of namespace without label foo=bar and accept those of namespace with label foo=bar](https://github.com/kubernetes/ingress-nginx/tree/main/test/e2e/settings/namespace_selector.go#L63)
 
 ### [[Security] no-auth-locations](https://github.com/kubernetes/ingress-nginx/tree/main/test/e2e/settings/no_auth_locations.go#L33)
 

images/fastcgi-helloserver/rootfs/main.go

@@ -16,13 +16,13 @@ func hello(w http.ResponseWriter, r *http.Request) {
 	}
 
 	key := keys[0]
-	fmt.Fprintf(w, "Hello "+string(key)+"!")
+	fmt.Fprintf(w, "Hello "+key+"!")
 }
 
 func main() {
 	http.HandleFunc("/hello", hello)
 
-	l, err := net.Listen("tcp", "0.0.0.0:9000")
+	l, err := net.Listen("tcp", "0.0.0.0:9000") //nolint:gosec // Ignore the gosec error since it's a hello server
 	if err != nil {
 		panic(err)
 	}

images/go-grpc-greeter-server/rootfs/main.go

@@ -41,7 +41,7 @@ type hwServer struct {
 }
 
 // SayHello implements helloworld.GreeterServer
-func (s *hwServer) SayHello(ctx context.Context, in *hwpb.HelloRequest) (*hwpb.HelloReply, error) {
+func (s *hwServer) SayHello(_ context.Context, in *hwpb.HelloRequest) (*hwpb.HelloReply, error) {
 	return &hwpb.HelloReply{Message: "Hello " + in.Name}, nil
 }
 
@@ -49,7 +49,7 @@ type ecServer struct {
 	ecpb.UnimplementedEchoServer
 }
 
-func (s *ecServer) UnaryEcho(ctx context.Context, req *ecpb.EchoRequest) (*ecpb.EchoResponse, error) {
+func (s *ecServer) UnaryEcho(_ context.Context, req *ecpb.EchoRequest) (*ecpb.EchoResponse, error) {
 	return &ecpb.EchoResponse{Message: req.Message}, nil
 }
 

internal/admission/controller/main.go

@@ -42,19 +42,16 @@ type IngressAdmission struct {
 	Checker Checker
 }
 
-var (
-	ingressResource = metav1.GroupVersionKind{
+var ingressResource = metav1.GroupVersionKind{
 	Group:   networking.GroupName,
 	Version: "v1",
 	Kind:    "Ingress",
-	}
-)
+}
 
 // HandleAdmission populates the admission Response
 // with Allowed=false if the Object is an ingress that would prevent nginx to reload the configuration
 // with Allowed=true otherwise
 func (ia *IngressAdmission) HandleAdmission(obj runtime.Object) (runtime.Object, error) {
-
 	review, isV1 := obj.(*admissionv1.AdmissionReview)
 	if !isV1 {
 		return nil, fmt.Errorf("request is not of type AdmissionReview v1 or v1beta1")

internal/admission/controller/main_test.go

@@ -33,12 +33,12 @@ type failTestChecker struct {
 	t *testing.T
 }
 
-func (ftc failTestChecker) CheckIngress(ing *networking.Ingress) error {
+func (ftc failTestChecker) CheckIngress(_ *networking.Ingress) error {
 	ftc.t.Error("checker should not be called")
 	return nil
 }
 
-func (ftc failTestChecker) CheckWarning(ing *networking.Ingress) ([]string, error) {
+func (ftc failTestChecker) CheckWarning(_ *networking.Ingress) ([]string, error) {
 	ftc.t.Error("checker should not be called")
 	return nil, nil
 }

internal/admission/controller/server.go

@@ -26,9 +26,7 @@ import (
 	"k8s.io/klog/v2"
 )
 
-var (
-	scheme = runtime.NewScheme()
-)
+var scheme = runtime.NewScheme()
 
 func init() {
 	if err := admissionv1.AddToScheme(scheme); err != nil {

internal/ingress/annotations/alias/main.go

@@ -72,7 +72,7 @@ func (a alias) Parse(ing *networking.Ingress) (interface{}, error) {
 	aliases := sets.NewString()
 	for _, alias := range strings.Split(val, ",") {
 		alias = strings.TrimSpace(alias)
-		if len(alias) == 0 {
+		if alias == "" {
 			continue
 		}
 

internal/ingress/annotations/alias/main_test.go

@@ -65,9 +65,9 @@ func TestParse(t *testing.T) {
 		if testCase.skipValidation {
 			parser.EnableAnnotationValidation = false
 		}
-		defer func() {
+		t.Cleanup(func() {
 			parser.EnableAnnotationValidation = true
-		}()
+		})
 		result, err := ap.Parse(ing)
 		if (err != nil) != testCase.wantErr {
 			t.Errorf("ParseAliasAnnotation() annotation: %s, error = %v, wantErr %v", testCase.annotations, err, testCase.wantErr)

internal/ingress/annotations/annotations.go

@@ -86,7 +86,6 @@ type Ingress struct {
 	CorsConfig           cors.Config
 	CustomHTTPErrors     []int
 	DefaultBackend       *apiv1.Service
-	//TODO: Change this back into an error when https://github.com/imdario/mergo/issues/100 is resolved
 	FastCGI              fastcgi.Config
 	Denied               *string
 	ExternalAuth         authreq.Config

internal/ingress/annotations/annotations_test.go

@@ -64,7 +64,11 @@ func (m mockCfg) GetService(name string) (*apiv1.Service, error) {
 }
 
 func (m mockCfg) GetAuthCertificate(name string) (*resolver.AuthSSLCert, error) {
-	if secret, _ := m.GetSecret(name); secret != nil {
+	secret, err := m.GetSecret(name)
+	if err != nil {
+		return nil, err
+	}
+	if secret != nil {
 		return &resolver.AuthSSLCert{
 			Secret:     name,
 			CAFileName: "/opt/ca.pem",
@@ -270,9 +274,9 @@ func TestCors(t *testing.T) {
 		if r.CorsAllowCredentials != foo.credentials {
 			t.Errorf("Returned %v but expected %v for Cors Credentials", r.CorsAllowCredentials, foo.credentials)
 		}
-
 	}
 }
+
 func TestCustomHTTPErrors(t *testing.T) {
 	ec := NewAnnotationExtractor(mockCfg{})
 	ing := buildIngress()

internal/ingress/annotations/auth/main.go

@@ -50,7 +50,7 @@ var (
 )
 
 var AuthSecretConfig = parser.AnnotationConfig{
-	Validator:     parser.ValidateRegex(*parser.BasicCharsRegex, true),
+	Validator:     parser.ValidateRegex(parser.BasicCharsRegex, true),
 	Scope:         parser.AnnotationScopeLocation,
 	Risk:          parser.AnnotationRiskMedium, // Medium as it allows a subset of chars
 	Documentation: `This annotation defines the name of the Secret that contains the usernames and passwords which are granted access to the paths defined in the Ingress rules. `,
@@ -61,20 +61,20 @@ var authSecretAnnotations = parser.Annotation{
 	Annotations: parser.AnnotationFields{
 		AuthSecretAnnotation: AuthSecretConfig,
 		authSecretTypeAnnotation: {
-			Validator: parser.ValidateRegex(*authSecretTypeRegex, true),
+			Validator: parser.ValidateRegex(authSecretTypeRegex, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskLow,
 			Documentation: `This annotation what is the format of auth-secret value. Can be "auth-file" that defines the content of an htpasswd file, or "auth-map" where each key
 			is a user and each value is the password.`,
 		},
 		authRealmAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.CharsWithSpace, false),
+			Validator:     parser.ValidateRegex(parser.CharsWithSpace, false),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium, // Medium as it allows a subset of chars
 			Documentation: `This annotation defines the realm (message) that should be shown to user when authentication is requested.`,
 		},
 		authTypeAnnotation: {
-			Validator:     parser.ValidateRegex(*authTypeRegex, true),
+			Validator:     parser.ValidateRegex(authTypeRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation defines the basic authentication type. Should be "basic" or "digest"`,
@@ -167,14 +167,14 @@ func (a auth) Parse(ing *networking.Ingress) (interface{}, error) {
 
 	s, err := parser.GetStringAnnotation(AuthSecretAnnotation, ing, a.annotationConfig.Annotations)
 	if err != nil {
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("error reading secret name from annotation: %w", err),
 		}
 	}
 
 	sns, sname, err := cache.SplitMetaNamespaceKey(s)
 	if err != nil {
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("error reading secret name from annotation: %w", err),
 		}
 	}
@@ -185,7 +185,7 @@ func (a auth) Parse(ing *networking.Ingress) (interface{}, error) {
 	secCfg := a.r.GetSecurityConfiguration()
 	// We don't accept different namespaces for secrets.
 	if !secCfg.AllowCrossNamespaceResources && sns != ing.Namespace {
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("cross namespace usage of secrets is not allowed"),
 		}
 	}
@@ -193,7 +193,7 @@ func (a auth) Parse(ing *networking.Ingress) (interface{}, error) {
 	name := fmt.Sprintf("%v/%v", sns, sname)
 	secret, err := a.r.GetSecret(name)
 	if err != nil {
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("unexpected error reading secret %s: %w", name, err),
 		}
 	}
@@ -217,7 +217,7 @@ func (a auth) Parse(ing *networking.Ingress) (interface{}, error) {
 			return nil, err
 		}
 	default:
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("invalid auth-secret-type in annotation, must be 'auth-file' or 'auth-map': %w", err),
 		}
 	}
@@ -238,14 +238,14 @@ func (a auth) Parse(ing *networking.Ingress) (interface{}, error) {
 func dumpSecretAuthFile(filename string, secret *api.Secret) error {
 	val, ok := secret.Data["auth"]
 	if !ok {
-		return ing_errors.LocationDenied{
+		return ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("the secret %s does not contain a key with value auth", secret.Name),
 		}
 	}
 
 	err := os.WriteFile(filename, val, file.ReadWriteByUser)
 	if err != nil {
-		return ing_errors.LocationDenied{
+		return ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("unexpected error creating password file: %w", err),
 		}
 	}
@@ -264,7 +264,7 @@ func dumpSecretAuthMap(filename string, secret *api.Secret) error {
 
 	err := os.WriteFile(filename, []byte(builder.String()), file.ReadWriteByUser)
 	if err != nil {
-		return ing_errors.LocationDenied{
+		return ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("unexpected error creating password file: %w", err),
 		}
 	}

internal/ingress/annotations/auth/main_test.go

@@ -32,6 +32,15 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
+//nolint:gosec // Ignore hardcoded credentials error in testing
+const (
+	authType          = "basic"
+	authRealm         = "-realm-"
+	defaultDemoSecret = "default/demo-secret"
+	othernsDemoSecret = "otherns/demo-secret"
+	demoSecret        = "demo-secret"
+)
+
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
 		Service: &networking.IngressServiceBackend{
@@ -80,7 +89,7 @@ type mockSecret struct {
 }
 
 func (m mockSecret) GetSecret(name string) (*api.Secret, error) {
-	if name != "default/demo-secret" && name != "otherns/demo-secret" {
+	if name != defaultDemoSecret && name != othernsDemoSecret {
 		return nil, fmt.Errorf("there is no secret with name %v", name)
 	}
 
@@ -92,7 +101,7 @@ func (m mockSecret) GetSecret(name string) (*api.Secret, error) {
 	return &api.Secret{
 		ObjectMeta: meta_v1.ObjectMeta{
 			Namespace: ns,
-			Name:      "demo-secret",
+			Name:      demoSecret,
 		},
 		Data: map[string][]byte{"auth": []byte("foo:$apr1$OFG3Xybp$ckL0FHDAkoXYIlH9.cysT0")},
 	}, nil
@@ -129,9 +138,9 @@ func TestIngressInvalidRealm(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
 	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = "something weird ; location trying to { break }"
-	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "demo-secret"
+	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = demoSecret
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
@@ -148,14 +157,14 @@ func TestIngressInvalidDifferentNamespace(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
-	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "otherns/demo-secret"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
+	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = othernsDemoSecret
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
 	defer os.RemoveAll(dir)
 
-	expected := ing_errors.LocationDenied{
+	expected := ing_errors.LocationDeniedError{
 		Reason: errors.New("cross namespace usage of secrets is not allowed"),
 	}
 	_, err := NewParser(dir, &mockSecret{}).Parse(ing)
@@ -168,8 +177,8 @@ func TestIngressInvalidDifferentNamespaceAllowed(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
-	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "otherns/demo-secret"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
+	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = othernsDemoSecret
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
@@ -187,14 +196,14 @@ func TestIngressInvalidSecretName(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
 	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "demo-secret;xpto"
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
 	defer os.RemoveAll(dir)
 
-	expected := ing_errors.LocationDenied{
+	expected := ing_errors.LocationDeniedError{
 		Reason: errors.New("error reading secret name from annotation: annotation nginx.ingress.kubernetes.io/auth-secret contains invalid value"),
 	}
 	_, err := NewParser(dir, &mockSecret{}).Parse(ing)
@@ -207,13 +216,13 @@ func TestInvalidIngressAuthNoSecret(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
 	defer os.RemoveAll(dir)
 
-	expected := ing_errors.LocationDenied{
+	expected := ing_errors.LocationDeniedError{
 		Reason: errors.New("error reading secret name from annotation: ingress rule without annotations"),
 	}
 	_, err := NewParser(dir, &mockSecret{}).Parse(ing)
@@ -226,9 +235,9 @@ func TestIngressAuth(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
-	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "demo-secret"
-	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = "-realm-"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
+	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = demoSecret
+	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = authRealm
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
@@ -242,10 +251,10 @@ func TestIngressAuth(t *testing.T) {
 	if !ok {
 		t.Errorf("expected a BasicDigest type")
 	}
-	if auth.Type != "basic" {
+	if auth.Type != authType {
 		t.Errorf("Expected basic as auth type but returned %s", auth.Type)
 	}
-	if auth.Realm != "-realm-" {
+	if auth.Realm != authRealm {
 		t.Errorf("Expected -realm- as realm but returned %s", auth.Realm)
 	}
 	if !auth.Secured {
@@ -257,9 +266,9 @@ func TestIngressAuthWithoutSecret(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
 	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "invalid-secret"
-	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = "-realm-"
+	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = authRealm
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
@@ -275,10 +284,10 @@ func TestIngressAuthInvalidSecretKey(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = "basic"
-	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = "demo-secret"
+	data[parser.GetAnnotationWithPrefix(authTypeAnnotation)] = authType
+	data[parser.GetAnnotationWithPrefix(AuthSecretAnnotation)] = demoSecret
 	data[parser.GetAnnotationWithPrefix(authSecretTypeAnnotation)] = "invalid-type"
-	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = "-realm-"
+	data[parser.GetAnnotationWithPrefix(authRealmAnnotation)] = authRealm
 	ing.SetAnnotations(data)
 
 	_, dir, _ := dummySecretContent(t)
@@ -290,7 +299,7 @@ func TestIngressAuthInvalidSecretKey(t *testing.T) {
 	}
 }
 
-func dummySecretContent(t *testing.T) (string, string, *api.Secret) {
+func dummySecretContent(t *testing.T) (fileName, dir string, s *api.Secret) {
 	dir, err := os.MkdirTemp("", fmt.Sprintf("%v", time.Now().Unix()))
 	if err != nil {
 		t.Error(err)
@@ -301,7 +310,10 @@ func dummySecretContent(t *testing.T) (string, string, *api.Secret) {
 		t.Error(err)
 	}
 	defer tmpfile.Close()
-	s, _ := mockSecret{}.GetSecret("default/demo-secret")
+	s, err = mockSecret{}.GetSecret(defaultDemoSecret)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	return tmpfile.Name(), dir, s
 }
 

internal/ingress/annotations/authreq/main.go

@@ -57,25 +57,25 @@ var authReqAnnotations = parser.Annotation{
 	Group: "authentication",
 	Annotations: parser.AnnotationFields{
 		authReqURLAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLWithNginxVariableRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLWithNginxVariableRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskHigh,
 			Documentation: `This annotation allows to indicate the URL where the HTTP request should be sent`,
 		},
 		authReqMethodAnnotation: {
-			Validator:     parser.ValidateRegex(*methodsRegex, true),
+			Validator:     parser.ValidateRegex(methodsRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation allows to specify the HTTP method to use`,
 		},
 		authReqSigninAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLWithNginxVariableRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLWithNginxVariableRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskHigh,
 			Documentation: `This annotation allows to specify the location of the error page`,
 		},
 		authReqSigninRedirParamAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLIsValidRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLIsValidRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation allows to specify the URL parameter in the error page which should contain the original URL for a failed signin request`,
@@ -87,7 +87,7 @@ var authReqAnnotations = parser.Annotation{
 			Documentation: `This annotation allows to specify a custom snippet to use with external authentication`,
 		},
 		authReqCacheKeyAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.NGINXVariable, true),
+			Validator:     parser.ValidateRegex(parser.NGINXVariable, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation enables caching for auth requests.`,
@@ -117,26 +117,26 @@ var authReqAnnotations = parser.Annotation{
 			Documentation: `This annotation specifies a duration in seconds which an idle keepalive connection to an upstream server will stay open`,
 		},
 		authReqCacheDuration: {
-			Validator:     parser.ValidateRegex(*parser.ExtendedCharsRegex, false),
+			Validator:     parser.ValidateRegex(parser.ExtendedCharsRegex, false),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation allows to specify a caching time for auth responses based on their response codes, e.g. 200 202 30m`,
 		},
 		authReqResponseHeadersAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.HeadersVariable, true),
+			Validator:     parser.ValidateRegex(parser.HeadersVariable, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation sets the headers to pass to backend once authentication request completes. They should be separated by comma.`,
 		},
 		authReqProxySetHeadersAnnotation: {
-			Validator: parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator: parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation sets the name of a ConfigMap that specifies headers to pass to the authentication service.
 			Only ConfigMaps on the same namespace are allowed`,
 		},
 		authReqRequestRedirectAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLIsValidRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLIsValidRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation allows to specify the X-Auth-Request-Redirect header value`,
@@ -249,8 +249,8 @@ func (e1 *Config) Equal(e2 *Config) bool {
 var (
 	methodsRegex    = regexp.MustCompile("(GET|HEAD|POST|PUT|PATCH|DELETE|CONNECT|OPTIONS|TRACE)")
 	headerRegexp    = regexp.MustCompile(`^[a-zA-Z\d\-_]+$`)
-	statusCodeRegex = regexp.MustCompile(`^[\d]{3}$`)
-	durationRegex   = regexp.MustCompile(`^[\d]+(ms|s|m|h|d|w|M|y)$`) // see http://nginx.org/en/docs/syntax.html
+	statusCodeRegex = regexp.MustCompile(`^\d{3}$`)
+	durationRegex   = regexp.MustCompile(`^\d+(ms|s|m|h|d|w|M|y)$`) // see http://nginx.org/en/docs/syntax.html
 )
 
 // ValidMethod checks is the provided string a valid HTTP method
@@ -273,7 +273,7 @@ func ValidCacheDuration(duration string) bool {
 	seenDuration := false
 
 	for _, element := range elements {
-		if len(element) == 0 {
+		if element == "" {
 			continue
 		}
 		if statusCodeRegex.MatchString(element) {
@@ -304,6 +304,8 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 
 // ParseAnnotations parses the annotations contained in the ingress
 // rule used to use an Config URL as source for authentication
+//
+//nolint:gocyclo // Ignore function complexity error
 func (a authReq) Parse(ing *networking.Ingress) (interface{}, error) {
 	// Required Parameters
 	urlString, err := parser.GetStringAnnotation(authReqURLAnnotation, ing, a.annotationConfig.Annotations)
@@ -313,7 +315,7 @@ func (a authReq) Parse(ing *networking.Ingress) (interface{}, error) {
 
 	authURL, err := parser.StringToURL(urlString)
 	if err != nil {
-		return nil, ing_errors.LocationDenied{Reason: fmt.Errorf("could not parse auth-url annotation: %v", err)}
+		return nil, ing_errors.LocationDeniedError{Reason: fmt.Errorf("could not parse auth-url annotation: %v", err)}
 	}
 
 	authMethod, err := parser.GetStringAnnotation(authReqMethodAnnotation, ing, a.annotationConfig.Annotations)
@@ -410,7 +412,7 @@ func (a authReq) Parse(ing *networking.Ingress) (interface{}, error) {
 	if err != nil && ing_errors.IsValidationError(err) {
 		return nil, ing_errors.NewLocationDenied("validation error")
 	}
-	if len(hstr) != 0 {
+	if hstr != "" {
 		harr := strings.Split(hstr, ",")
 		for _, header := range harr {
 			header = strings.TrimSpace(header)
@@ -430,7 +432,7 @@ func (a authReq) Parse(ing *networking.Ingress) (interface{}, error) {
 
 	cns, _, err := cache.SplitMetaNamespaceKey(proxySetHeaderMap)
 	if err != nil {
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("error reading configmap name %s from annotation: %w", proxySetHeaderMap, err),
 		}
 	}
@@ -442,7 +444,7 @@ func (a authReq) Parse(ing *networking.Ingress) (interface{}, error) {
 	secCfg := a.r.GetSecurityConfiguration()
 	// We don't accept different namespaces for secrets.
 	if !secCfg.AllowCrossNamespaceResources && cns != ing.Namespace {
-		return nil, ing_errors.LocationDenied{
+		return nil, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("cross namespace usage of secrets is not allowed"),
 		}
 	}
@@ -499,7 +501,7 @@ func (a authReq) Parse(ing *networking.Ingress) (interface{}, error) {
 // It will always return at least one duration (the default duration)
 func ParseStringToCacheDurations(input string) ([]string, error) {
 	authCacheDuration := []string{}
-	if len(input) != 0 {
+	if input != "" {
 		arr := strings.Split(input, ",")
 		for _, duration := range arr {
 			duration = strings.TrimSpace(duration)

internal/ingress/annotations/authreq/main_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package authreq
 
 import (
-	"fmt"
 	"reflect"
 	"testing"
 
@@ -113,7 +112,7 @@ func TestAnnotations(t *testing.T) {
 		data[parser.GetAnnotationWithPrefix("auth-url")] = test.url
 		data[parser.GetAnnotationWithPrefix("auth-signin")] = test.signinURL
 		data[parser.GetAnnotationWithPrefix("auth-signin-redirect-param")] = test.signinURLRedirectParam
-		data[parser.GetAnnotationWithPrefix("auth-method")] = fmt.Sprintf("%v", test.method)
+		data[parser.GetAnnotationWithPrefix("auth-method")] = test.method
 		data[parser.GetAnnotationWithPrefix("auth-request-redirect")] = test.requestRedirect
 		data[parser.GetAnnotationWithPrefix("auth-snippet")] = test.authSnippet
 		data[parser.GetAnnotationWithPrefix("auth-cache-key")] = test.authCacheKey
@@ -331,7 +330,6 @@ func TestKeepaliveAnnotations(t *testing.T) {
 }
 
 func TestParseStringToCacheDurations(t *testing.T) {
-
 	tests := []struct {
 		title             string
 		duration          string
@@ -346,7 +344,6 @@ func TestParseStringToCacheDurations(t *testing.T) {
 	}
 
 	for _, test := range tests {
-
 		dur, err := ParseStringToCacheDurations(test.duration)
 		if test.expErr {
 			if err == nil {

internal/ingress/annotations/authreqglobal/main.go

@@ -55,7 +55,6 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 // ParseAnnotations parses the annotations contained in the ingress
 // rule used to enable or disable global external authentication
 func (a authReqGlobal) Parse(ing *networking.Ingress) (interface{}, error) {
-
 	enableGlobalAuth, err := parser.GetBoolAnnotation(enableGlobalAuthAnnotation, ing, a.annotationConfig.Annotations)
 	if err != nil {
 		enableGlobalAuth = true

internal/ingress/annotations/authreqglobal/main_test.go

@@ -77,7 +77,10 @@ func TestAnnotation(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("enable-global-auth")] = "false"
 	ing.SetAnnotations(data)
 
-	i, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	i, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	u, ok := i.(bool)
 	if !ok {
 		t.Errorf("expected a Config type")

internal/ingress/annotations/authtls/main.go

@@ -18,11 +18,10 @@ package authtls
 
 import (
 	"fmt"
+	"regexp"
 
 	networking "k8s.io/api/networking/v1"
 
-	"regexp"
-
 	"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
 	ing_errors "k8s.io/ingress-nginx/internal/ingress/errors"
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
@@ -45,20 +44,20 @@ var (
 	regexChars            = regexp.QuoteMeta(`()|=`)
 	authVerifyClientRegex = regexp.MustCompile(`on|off|optional|optional_no_ca`)
 	commonNameRegex       = regexp.MustCompile(`^CN=[/\-.\_\~a-zA-Z0-9` + regexChars + `]*$`)
-	redirectRegex         = regexp.MustCompile(`^((https?://)?[A-Za-z0-9\-\.]*(:[0-9]+)?/[A-Za-z0-9\-\.]*)?$`)
+	redirectRegex         = regexp.MustCompile(`^((https?://)?[A-Za-z0-9\-.]*(:\d+)?/[A-Za-z0-9\-.]*)?$`)
 )
 
 var authTLSAnnotations = parser.Annotation{
 	Group: "authentication",
 	Annotations: parser.AnnotationFields{
 		annotationAuthTLSSecret: {
-			Validator:     parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator:     parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium, // Medium as it allows a subset of chars
 			Documentation: `This annotation defines the secret that contains the certificate chain of allowed certs`,
 		},
 		annotationAuthTLSVerifyClient: {
-			Validator:     parser.ValidateRegex(*authVerifyClientRegex, true),
+			Validator:     parser.ValidateRegex(authVerifyClientRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium, // Medium as it allows a subset of chars
 			Documentation: `This annotation enables verification of client certificates. Can be "on", "off", "optional" or "optional_no_ca"`,
@@ -70,7 +69,7 @@ var authTLSAnnotations = parser.Annotation{
 			Documentation: `This annotation defines validation depth between the provided client certificate and the Certification Authority chain.`,
 		},
 		annotationAuthTLSErrorPage: {
-			Validator:     parser.ValidateRegex(*redirectRegex, true),
+			Validator:     parser.ValidateRegex(redirectRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskHigh,
 			Documentation: `This annotation defines the URL/Page that user should be redirected in case of a Certificate Authentication Error`,
@@ -82,7 +81,7 @@ var authTLSAnnotations = parser.Annotation{
 			Documentation: `This annotation defines if the received certificates should be passed or not to the upstream server in the header "ssl-client-cert"`,
 		},
 		annotationAuthTLSMatchCN: {
-			Validator:     parser.ValidateRegex(*commonNameRegex, true),
+			Validator:     parser.ValidateRegex(commonNameRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskHigh,
 			Documentation: `This annotation adds a sanity check for the CN of the client certificate that is sent over using a string / regex starting with "CN="`,
@@ -130,9 +129,9 @@ func (assl1 *Config) Equal(assl2 *Config) bool {
 }
 
 // NewParser creates a new TLS authentication annotation parser
-func NewParser(resolver resolver.Resolver) parser.IngressAnnotation {
+func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 	return authTLS{
-		r:                resolver,
+		r:                r,
 		annotationConfig: authTLSAnnotations,
 	}
 }
@@ -169,7 +168,7 @@ func (a authTLS) Parse(ing *networking.Ingress) (interface{}, error) {
 	authCert, err := a.r.GetAuthCertificate(tlsauthsecret)
 	if err != nil {
 		e := fmt.Errorf("error obtaining certificate: %w", err)
-		return &Config{}, ing_errors.LocationDenied{Reason: e}
+		return &Config{}, ing_errors.LocationDeniedError{Reason: e}
 	}
 	config.AuthSSLCert = *authCert
 

internal/ingress/annotations/authtls/main_test.go

@@ -27,6 +27,11 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
+const (
+	defaultDemoSecret = "default/demo-secret"
+	off               = "off"
+)
+
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
 		Service: &networking.IngressServiceBackend{
@@ -77,23 +82,22 @@ type mockSecret struct {
 
 // GetAuthCertificate from mockSecret mocks the GetAuthCertificate for authTLS
 func (m mockSecret) GetAuthCertificate(name string) (*resolver.AuthSSLCert, error) {
-	if name != "default/demo-secret" {
+	if name != defaultDemoSecret {
 		return nil, errors.Errorf("there is no secret with name %v", name)
 	}
 
 	return &resolver.AuthSSLCert{
-		Secret:     "default/demo-secret",
+		Secret:     defaultDemoSecret,
 		CAFileName: "/ssl/ca.crt",
 		CASHA:      "abc",
 	}, nil
-
 }
 
 func TestAnnotations(t *testing.T) {
 	ing := buildIngress()
 	data := map[string]string{}
 
-	data[parser.GetAnnotationWithPrefix(annotationAuthTLSSecret)] = "default/demo-secret"
+	data[parser.GetAnnotationWithPrefix(annotationAuthTLSSecret)] = defaultDemoSecret
 
 	ing.SetAnnotations(data)
 
@@ -108,7 +112,7 @@ func TestAnnotations(t *testing.T) {
 		t.Errorf("expected *Config but got %v", u)
 	}
 
-	secret, err := fakeSecret.GetAuthCertificate("default/demo-secret")
+	secret, err := fakeSecret.GetAuthCertificate(defaultDemoSecret)
 	if err != nil {
 		t.Errorf("unexpected error getting secret %v", err)
 	}
@@ -132,7 +136,7 @@ func TestAnnotations(t *testing.T) {
 		t.Errorf("expected empty string, but got %v", u.MatchCN)
 	}
 
-	data[parser.GetAnnotationWithPrefix(annotationAuthTLSVerifyClient)] = "off"
+	data[parser.GetAnnotationWithPrefix(annotationAuthTLSVerifyClient)] = off
 	data[parser.GetAnnotationWithPrefix(annotationAuthTLSVerifyDepth)] = "2"
 	data[parser.GetAnnotationWithPrefix(annotationAuthTLSErrorPage)] = "ok.com/error"
 	data[parser.GetAnnotationWithPrefix(annotationAuthTLSPassCertToUpstream)] = "true"
@@ -153,8 +157,8 @@ func TestAnnotations(t *testing.T) {
 	if u.AuthSSLCert.Secret != secret.Secret {
 		t.Errorf("expected %v but got %v", secret.Secret, u.AuthSSLCert.Secret)
 	}
-	if u.VerifyClient != "off" {
-		t.Errorf("expected %v but got %v", "off", u.VerifyClient)
+	if u.VerifyClient != off {
+		t.Errorf("expected %v but got %v", off, u.VerifyClient)
 	}
 	if u.ValidationDepth != 2 {
 		t.Errorf("expected %v but got %v", 2, u.ValidationDepth)
@@ -262,28 +266,21 @@ func TestInvalidAnnotations(t *testing.T) {
 	if u.MatchCN != "" {
 		t.Errorf("expected empty string but got %v", u.MatchCN)
 	}
-
 }
 
 func TestEquals(t *testing.T) {
 	cfg1 := &Config{}
 	cfg2 := &Config{}
 
-	// Same config
-	result := cfg1.Equal(cfg1)
-	if result != true {
-		t.Errorf("Expected true")
-	}
-
 	// compare nil
-	result = cfg1.Equal(nil)
+	result := cfg1.Equal(nil)
 	if result != false {
 		t.Errorf("Expected false")
 	}
 
 	// Different Certs
 	sslCert1 := resolver.AuthSSLCert{
-		Secret:     "default/demo-secret",
+		Secret:     defaultDemoSecret,
 		CAFileName: "/ssl/ca.crt",
 		CASHA:      "abc",
 	}
@@ -302,7 +299,7 @@ func TestEquals(t *testing.T) {
 
 	// Different Verify Client
 	cfg1.VerifyClient = "on"
-	cfg2.VerifyClient = "off"
+	cfg2.VerifyClient = off
 	result = cfg1.Equal(cfg2)
 	if result != false {
 		t.Errorf("Expected false")

internal/ingress/annotations/backendprotocol/main.go

@@ -25,9 +25,7 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
-var (
-	validProtocols = []string{"auto_http", "http", "https", "grpc", "grpcs", "fcgi"}
-)
+var validProtocols = []string{"auto_http", "http", "https", "grpc", "grpcs", "fcgi"}
 
 const (
 	http                      = "HTTP"

internal/ingress/annotations/backendprotocol/main_test.go

@@ -44,6 +44,7 @@ func buildIngress() *networking.Ingress {
 		},
 	}
 }
+
 func TestParseInvalidAnnotations(t *testing.T) {
 	ing := buildIngress()
 
@@ -56,7 +57,7 @@ func TestParseInvalidAnnotations(t *testing.T) {
 	if !ok {
 		t.Errorf("expected a string type")
 	}
-	if val != "HTTP" {
+	if val != http {
 		t.Errorf("expected HTTPS but %v returned", val)
 	}
 
@@ -72,7 +73,7 @@ func TestParseInvalidAnnotations(t *testing.T) {
 	if !ok {
 		t.Errorf("expected a string type")
 	}
-	if val != "HTTP" {
+	if val != http {
 		t.Errorf("expected HTTPS but %v returned", val)
 	}
 
@@ -88,7 +89,7 @@ func TestParseInvalidAnnotations(t *testing.T) {
 	if !ok {
 		t.Errorf("expected a string type")
 	}
-	if val != "HTTP" {
+	if val != http {
 		t.Errorf("expected HTTPS but %v returned", val)
 	}
 }

internal/ingress/annotations/canary/main.go

@@ -57,7 +57,7 @@ var CanaryAnnotations = parser.Annotation{
 			Documentation: `This annotation The total weight of traffic. If unspecified, it defaults to 100`,
 		},
 		canaryByHeaderAnnotation: {
-			Validator: parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator: parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines the header that should be used for notifying the Ingress to route the request to the service specified in the Canary Ingress.
@@ -65,7 +65,7 @@ var CanaryAnnotations = parser.Annotation{
 			For any other value, the header will be ignored and the request compared against the other canary rules by precedence`,
 		},
 		canaryByHeaderValueAnnotation: {
-			Validator: parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator: parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines the header value to match for notifying the Ingress to route the request to the service specified in the Canary Ingress. 
@@ -74,7 +74,7 @@ var CanaryAnnotations = parser.Annotation{
 			It doesn't have any effect if the 'canary-by-header' annotation is not defined`,
 		},
 		canaryByHeaderPatternAnnotation: {
-			Validator: parser.ValidateRegex(*parser.IsValidRegex, false),
+			Validator: parser.ValidateRegex(parser.IsValidRegex, false),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation works the same way as canary-by-header-value except it does PCRE Regex matching. 
@@ -82,7 +82,7 @@ var CanaryAnnotations = parser.Annotation{
 			When the given Regex causes error during request processing, the request will be considered as not matching.`,
 		},
 		canaryByCookieAnnotation: {
-			Validator: parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator: parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines the cookie that should be used for notifying the Ingress to route the request to the service specified in the Canary Ingress.
@@ -189,7 +189,7 @@ func (c canary) GetDocumentation() parser.AnnotationFields {
 	return c.annotationConfig.Annotations
 }
 
-func (a canary) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (c canary) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(c.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, CanaryAnnotations.Annotations)
 }

internal/ingress/annotations/canary/main_test.go

@@ -17,6 +17,7 @@ limitations under the License.
 package canary
 
 import (
+	"strconv"
 	"testing"
 
 	api "k8s.io/api/core/v1"
@@ -24,8 +25,6 @@ import (
 	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
 
-	"strconv"
-
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
@@ -93,7 +92,6 @@ func TestCanaryInvalid(t *testing.T) {
 	if val.Weight != 0 {
 		t.Errorf("Expected %v but got %v", 0, val.Weight)
 	}
-
 }
 
 func TestAnnotations(t *testing.T) {
@@ -133,11 +131,10 @@ func TestAnnotations(t *testing.T) {
 			}
 
 			continue
-		} else {
+		}
 		if err != nil {
 			t.Errorf("%v: expected nil but returned error %v", test.title, err)
 		}
-		}
 
 		canaryConfig, ok := i.(*Config)
 		if !ok {

internal/ingress/annotations/clientbodybuffersize/main.go

@@ -31,7 +31,7 @@ var clientBodyBufferSizeConfig = parser.Annotation{
 	Group: "backend",
 	Annotations: parser.AnnotationFields{
 		clientBodyBufferSizeAnnotation: {
-			Validator: parser.ValidateRegex(*parser.SizeRegex, true),
+			Validator: parser.ValidateRegex(parser.SizeRegex, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskLow, // Low, as it allows just a set of options
 			Documentation: `Sets buffer size for reading client request body per location. 
@@ -65,7 +65,7 @@ func (cbbs clientBodyBufferSize) Parse(ing *networking.Ingress) (interface{}, er
 	return parser.GetStringAnnotation(clientBodyBufferSizeAnnotation, ing, cbbs.annotationConfig.Annotations)
 }
 
-func (a clientBodyBufferSize) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (cbbs clientBodyBufferSize) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(cbbs.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, clientBodyBufferSizeConfig.Annotations)
 }

internal/ingress/annotations/clientbodybuffersize/main_test.go

@@ -57,6 +57,7 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
+		//nolint:errcheck // Ignore the error since invalid cases will be checked with expected results
 		result, _ := ap.Parse(ing)
 		if result != testCase.expected {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)

internal/ingress/annotations/connection/main.go

@@ -29,15 +29,13 @@ const (
 	connectionProxyHeaderAnnotation = "connection-proxy-header"
 )
 
-var (
-	validConnectionHeaderValue = regexp.MustCompile(`^(close|keep-alive)$`)
-)
+var validConnectionHeaderValue = regexp.MustCompile(`^(close|keep-alive)$`)
 
 var connectionHeadersAnnotations = parser.Annotation{
 	Group: "backend",
 	Annotations: parser.AnnotationFields{
 		connectionProxyHeaderAnnotation: {
-			Validator:     parser.ValidateRegex(*validConnectionHeaderValue, true),
+			Validator:     parser.ValidateRegex(validConnectionHeaderValue, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation allows setting a specific value for "proxy_set_header Connection" directive. Right now it is restricted to "close" or "keep-alive"`,

internal/ingress/annotations/connection/main_test.go

@@ -66,6 +66,5 @@ func TestParse(t *testing.T) {
 		if !p.Equal(testCase.expected) {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, p, testCase.annotations)
 		}
-
 	}
 }

internal/ingress/annotations/cors/main.go

@@ -43,9 +43,9 @@ var (
 	// * Sets a group that can be (https?://)?*?.something.com:port?
 	// * Allows this to be repeated as much as possible, and separated by comma
 	// Otherwise it should be '*'
-	corsOriginRegexValidator = regexp.MustCompile(`^((((https?://)?(\*\.)?[A-Za-z0-9\-\.]*(:[0-9]+)?,?)+)|\*)?$`)
+	corsOriginRegexValidator = regexp.MustCompile(`^((((https?://)?(\*\.)?[A-Za-z0-9\-.]*(:\d+)?,?)+)|\*)?$`)
 	// corsOriginRegex defines the regex for validation inside Parse
-	corsOriginRegex = regexp.MustCompile(`^(https?://(\*\.)?[A-Za-z0-9\-\.]*(:[0-9]+)?|\*)?$`)
+	corsOriginRegex = regexp.MustCompile(`^(https?://(\*\.)?[A-Za-z0-9\-.]*(:\d+)?|\*)?$`)
 	// Method must contain valid methods list (PUT, GET, POST, BLA)
 	// May contain or not spaces between each verb
 	corsMethodsRegex = regexp.MustCompile(`^([A-Za-z]+,?\s?)+$`)
@@ -74,7 +74,7 @@ var corsAnnotation = parser.Annotation{
 			Documentation: `This annotation enables Cross-Origin Resource Sharing (CORS) in an Ingress rule`,
 		},
 		corsAllowOriginAnnotation: {
-			Validator: parser.ValidateRegex(*corsOriginRegexValidator, true),
+			Validator: parser.ValidateRegex(corsOriginRegexValidator, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation controls what's the accepted Origin for CORS.
@@ -82,14 +82,14 @@ var corsAnnotation = parser.Annotation{
 			It also supports single level wildcard subdomains and follows this format: http(s)://*.foo.bar, http(s)://*.bar.foo:8080 or http(s)://*.abc.bar.foo:9000`,
 		},
 		corsAllowHeadersAnnotation: {
-			Validator: parser.ValidateRegex(*parser.HeadersVariable, true),
+			Validator: parser.ValidateRegex(parser.HeadersVariable, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation controls which headers are accepted.
 			This is a multi-valued field, separated by ',' and accepts letters, numbers, _ and -`,
 		},
 		corsAllowMethodsAnnotation: {
-			Validator: parser.ValidateRegex(*corsMethodsRegex, true),
+			Validator: parser.ValidateRegex(corsMethodsRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation controls which methods are accepted.
@@ -102,7 +102,7 @@ var corsAnnotation = parser.Annotation{
 			Documentation: `This annotation controls if credentials can be passed during CORS operations.`,
 		},
 		corsExposeHeadersAnnotation: {
-			Validator: parser.ValidateRegex(*corsExposeHeadersRegex, true),
+			Validator: parser.ValidateRegex(corsExposeHeadersRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation controls which headers are exposed to response.
@@ -260,7 +260,7 @@ func (c cors) GetDocumentation() parser.AnnotationFields {
 	return c.annotationConfig.Annotations
 }
 
-func (a cors) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (c cors) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(c.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, corsAnnotation.Annotations)
 }

internal/ingress/annotations/customhttperrors/main.go

@@ -31,16 +31,14 @@ const (
 	customHTTPErrorsAnnotation = "custom-http-errors"
 )
 
-var (
-	// We accept anything between 400 and 599, on a comma separated.
-	arrayOfHTTPErrors = regexp.MustCompile(`^(?:[4,5][0-9][0-9],?)*$`)
-)
+// We accept anything between 400 and 599, on a comma separated.
+var arrayOfHTTPErrors = regexp.MustCompile(`^(?:[4,5]\d{2},?)*$`)
 
 var customHTTPErrorsAnnotations = parser.Annotation{
 	Group: "backend",
 	Annotations: parser.AnnotationFields{
 		customHTTPErrorsAnnotation: {
-			Validator: parser.ValidateRegex(*arrayOfHTTPErrors, true),
+			Validator: parser.ValidateRegex(arrayOfHTTPErrors, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskLow,
 			Documentation: `If a default backend annotation is specified on the ingress, the errors code specified on this annotation 
@@ -72,7 +70,7 @@ func (e customhttperrors) Parse(ing *networking.Ingress) (interface{}, error) {
 	}
 
 	cSplit := strings.Split(c, ",")
-	var codes []int
+	codes := make([]int, 0, len(cSplit))
 	for _, i := range cSplit {
 		num, err := strconv.Atoi(i)
 		if err != nil {
@@ -88,7 +86,7 @@ func (e customhttperrors) GetDocumentation() parser.AnnotationFields {
 	return e.annotationConfig.Annotations
 }
 
-func (a customhttperrors) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (e customhttperrors) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(e.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, customHTTPErrorsAnnotations.Annotations)
 }

internal/ingress/annotations/defaultbackend/main.go

@@ -57,14 +57,14 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 
 // Parse parses the annotations contained in the ingress to use
 // a custom default backend
-func (db backend) Parse(ing *networking.Ingress) (interface{}, error) {
-	s, err := parser.GetStringAnnotation(defaultBackendAnnotation, ing, db.annotationConfig.Annotations)
+func (b backend) Parse(ing *networking.Ingress) (interface{}, error) {
+	s, err := parser.GetStringAnnotation(defaultBackendAnnotation, ing, b.annotationConfig.Annotations)
 	if err != nil {
 		return nil, err
 	}
 
 	name := fmt.Sprintf("%v/%v", ing.Namespace, s)
-	svc, err := db.r.GetService(name)
+	svc, err := b.r.GetService(name)
 	if err != nil {
 		return nil, fmt.Errorf("unexpected error reading service %s: %w", name, err)
 	}
@@ -72,11 +72,11 @@ func (db backend) Parse(ing *networking.Ingress) (interface{}, error) {
 	return svc, nil
 }
 
-func (db backend) GetDocumentation() parser.AnnotationFields {
-	return db.annotationConfig.Annotations
+func (b backend) GetDocumentation() parser.AnnotationFields {
+	return b.annotationConfig.Annotations
 }
 
-func (a backend) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (b backend) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(b.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, defaultBackendAnnotations.Annotations)
 }

internal/ingress/annotations/fastcgi/main.go

@@ -35,22 +35,20 @@ const (
 	fastCGIParamsAnnotation = "fastcgi-params-configmap"
 )
 
-var (
-	// fast-cgi valid parameters is just a single file name (like index.php)
-	regexValidIndexAnnotationAndKey = regexp.MustCompile(`^[A-Za-z0-9\.\-\_]+$`)
-)
+// fast-cgi valid parameters is just a single file name (like index.php)
+var regexValidIndexAnnotationAndKey = regexp.MustCompile(`^[A-Za-z0-9.\-\_]+$`)
 
 var fastCGIAnnotations = parser.Annotation{
 	Group: "fastcgi",
 	Annotations: parser.AnnotationFields{
 		fastCGIIndexAnnotation: {
-			Validator:     parser.ValidateRegex(*regexValidIndexAnnotationAndKey, true),
+			Validator:     parser.ValidateRegex(regexValidIndexAnnotationAndKey, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation can be used to specify an index file`,
 		},
 		fastCGIParamsAnnotation: {
-			Validator: parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator: parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation can be used to specify a ConfigMap containing the fastcgi parameters as a key/value.
@@ -98,7 +96,6 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 // ParseAnnotations parses the annotations contained in the ingress
 // rule used to indicate the fastcgiConfig.
 func (a fastcgi) Parse(ing *networking.Ingress) (interface{}, error) {
-
 	fcgiConfig := Config{}
 
 	if ing.GetAnnotations() == nil {
@@ -125,7 +122,7 @@ func (a fastcgi) Parse(ing *networking.Ingress) (interface{}, error) {
 
 	cmns, cmn, err := cache.SplitMetaNamespaceKey(cm)
 	if err != nil {
-		return fcgiConfig, ing_errors.LocationDenied{
+		return fcgiConfig, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("error reading configmap name from annotation: %w", err),
 		}
 	}
@@ -139,7 +136,7 @@ func (a fastcgi) Parse(ing *networking.Ingress) (interface{}, error) {
 	cm = fmt.Sprintf("%v/%v", ing.Namespace, cmn)
 	cmap, err := a.r.GetConfigMap(cm)
 	if err != nil {
-		return fcgiConfig, ing_errors.LocationDenied{
+		return fcgiConfig, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("unexpected error reading configmap %s: %w", cm, err),
 		}
 	}

internal/ingress/annotations/fastcgi/main_test.go

@@ -155,7 +155,6 @@ func TestParseFastCGIInvalidParamsConfigMapAnnotation(t *testing.T) {
 
 	invalidConfigMapList := []string{"unknown/configMap", "unknown/config/map"}
 	for _, configmap := range invalidConfigMapList {
-
 		data := map[string]string{}
 		data[parser.GetAnnotationWithPrefix("fastcgi-params-configmap")] = configmap
 		ing.SetAnnotations(data)
@@ -239,11 +238,9 @@ func TestParseFastCGIParamsConfigMapAnnotationWithDifferentNS(t *testing.T) {
 	if err == nil {
 		t.Errorf("Different namespace configmap should return an error")
 	}
-
 }
 
 func TestConfigEquality(t *testing.T) {
-
 	var nilConfig *Config
 
 	config := Config{
@@ -297,7 +294,6 @@ func TestConfigEquality(t *testing.T) {
 }
 
 func Test_fastcgi_Parse(t *testing.T) {
-
 	tests := []struct {
 		name          string
 		index         string
@@ -378,7 +374,6 @@ func Test_fastcgi_Parse(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-
 			ing := buildIngress()
 
 			data := map[string]string{}

internal/ingress/annotations/globalratelimit/main.go

@@ -25,7 +25,6 @@ import (
 	"k8s.io/klog/v2"
 
 	"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
-	"k8s.io/ingress-nginx/internal/ingress/errors"
 	ing_errors "k8s.io/ingress-nginx/internal/ingress/errors"
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 	"k8s.io/ingress-nginx/internal/net"
@@ -57,7 +56,7 @@ var globalRateLimitAnnotationConfig = parser.Annotation{
 			Documentation: `Configures a time window (i.e 1m) that the limit is applied`,
 		},
 		globalRateLimitKeyAnnotation: {
-			Validator: parser.ValidateRegex(*parser.NGINXVariable, true),
+			Validator: parser.ValidateRegex(parser.NGINXVariable, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskHigh,
 			Documentation: `This annotation Configures a key for counting the samples. Defaults to $remote_addr. 
@@ -123,23 +122,23 @@ func (a globalratelimit) Parse(ing *networking.Ingress) (interface{}, error) {
 	config := &Config{}
 
 	limit, err := parser.GetIntAnnotation(globalRateLimitAnnotation, ing, a.annotationConfig.Annotations)
-	if err != nil && errors.IsInvalidContent(err) {
+	if err != nil && ing_errors.IsInvalidContent(err) {
 		return nil, err
 	}
 	rawWindowSize, err := parser.GetStringAnnotation(globalRateLimitWindowAnnotation, ing, a.annotationConfig.Annotations)
-	if err != nil && errors.IsValidationError(err) {
-		return config, ing_errors.LocationDenied{
+	if err != nil && ing_errors.IsValidationError(err) {
+		return config, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("failed to parse 'global-rate-limit-window' value: %w", err),
 		}
 	}
 
-	if limit == 0 || len(rawWindowSize) == 0 {
+	if limit == 0 || rawWindowSize == "" {
 		return config, nil
 	}
 
 	windowSize, err := time.ParseDuration(rawWindowSize)
 	if err != nil {
-		return config, ing_errors.LocationDenied{
+		return config, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("failed to parse 'global-rate-limit-window' value: %w", err),
 		}
 	}
@@ -148,12 +147,12 @@ func (a globalratelimit) Parse(ing *networking.Ingress) (interface{}, error) {
 	if err != nil {
 		klog.Warningf("invalid %s, defaulting to %s", globalRateLimitKeyAnnotation, defaultKey)
 	}
-	if len(key) == 0 {
+	if key == "" {
 		key = defaultKey
 	}
 
 	rawIgnoredCIDRs, err := parser.GetStringAnnotation(globalRateLimitIgnoredCidrsAnnotation, ing, a.annotationConfig.Annotations)
-	if err != nil && errors.IsInvalidContent(err) {
+	if err != nil && ing_errors.IsInvalidContent(err) {
 		return nil, err
 	}
 	ignoredCIDRs, err := net.ParseCIDRs(rawIgnoredCIDRs)
@@ -161,7 +160,7 @@ func (a globalratelimit) Parse(ing *networking.Ingress) (interface{}, error) {
 		return nil, err
 	}
 
-	config.Namespace = strings.Replace(string(ing.UID), "-", "", -1)
+	config.Namespace = strings.ReplaceAll(string(ing.UID), "-", "")
 	config.Limit = limit
 	config.WindowSize = int(windowSize.Seconds())
 	config.Key = key

internal/ingress/annotations/globalratelimit/main_test.go

@@ -30,8 +30,10 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
-const UID = "31285d47-b150-4dcf-bd6f-12c46d769f6e"
-const expectedUID = "31285d47b1504dcfbd6f12c46d769f6e"
+const (
+	UID         = "31285d47-b150-4dcf-bd6f-12c46d769f6e"
+	expectedUID = "31285d47b1504dcfbd6f12c46d769f6e"
+)
 
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
@@ -190,10 +192,19 @@ func TestGlobalRateLimiting(t *testing.T) {
 			t.Errorf("expected error '%v' but got '%v'", testCase.expectedErr, actualErr)
 		}
 
-		actualConfig := i.(*Config)
+		actualConfig, ok := i.(*Config)
+		if !ok {
+			t.Errorf("expected Config type but got %T", i)
+		}
 		if !testCase.expectedConfig.Equal(actualConfig) {
-			expectedJSON, _ := json.Marshal(testCase.expectedConfig)
-			actualJSON, _ := json.Marshal(actualConfig)
+			expectedJSON, err := json.Marshal(testCase.expectedConfig)
+			if err != nil {
+				t.Errorf("failed to marshal expected config: %v", err)
+			}
+			actualJSON, err := json.Marshal(actualConfig)
+			if err != nil {
+				t.Errorf("failed to marshal actual config: %v", err)
+			}
 			t.Errorf("%v: expected config '%s' but got '%s'", testCase.title, expectedJSON, actualJSON)
 		}
 	}

internal/ingress/annotations/http2pushpreload/main.go

@@ -62,7 +62,7 @@ func (h2pp http2PushPreload) GetDocumentation() parser.AnnotationFields {
 	return h2pp.annotationConfig.Annotations
 }
 
-func (a http2PushPreload) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (h2pp http2PushPreload) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(h2pp.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, http2PushPreloadAnnotations.Annotations)
 }

internal/ingress/annotations/ipallowlist/main.go

@@ -96,16 +96,15 @@ func (a ipallowlist) Parse(ing *networking.Ingress) (interface{}, error) {
 			return &SourceRange{CIDR: defaultAllowlistSourceRange}, nil
 		}
 
-		return &SourceRange{CIDR: defaultAllowlistSourceRange}, ing_errors.LocationDenied{
+		return &SourceRange{CIDR: defaultAllowlistSourceRange}, ing_errors.LocationDeniedError{
 			Reason: err,
 		}
-
 	}
 
 	values := strings.Split(val, ",")
 	ipnets, ips, err := net.ParseIPNets(values...)
 	if err != nil && len(ips) == 0 {
-		return &SourceRange{CIDR: defaultAllowlistSourceRange}, ing_errors.LocationDenied{
+		return &SourceRange{CIDR: defaultAllowlistSourceRange}, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("the annotation does not contain a valid IP address or network: %w", err),
 		}
 	}

internal/ingress/annotations/ipdenylist/main.go

@@ -93,16 +93,15 @@ func (a ipdenylist) Parse(ing *networking.Ingress) (interface{}, error) {
 			return &SourceRange{CIDR: defaultDenylistSourceRange}, nil
 		}
 
-		return &SourceRange{CIDR: defaultDenylistSourceRange}, ing_errors.LocationDenied{
+		return &SourceRange{CIDR: defaultDenylistSourceRange}, ing_errors.LocationDeniedError{
 			Reason: err,
 		}
-
 	}
 
 	values := strings.Split(val, ",")
 	ipnets, ips, err := net.ParseIPNets(values...)
 	if err != nil && len(ips) == 0 {
-		return &SourceRange{CIDR: defaultDenylistSourceRange}, ing_errors.LocationDenied{
+		return &SourceRange{CIDR: defaultDenylistSourceRange}, ing_errors.LocationDeniedError{
 			Reason: fmt.Errorf("the annotation does not contain a valid IP address or network: %w", err),
 		}
 	}

internal/ingress/annotations/loadbalancing/main_test.go

@@ -54,6 +54,7 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
+		//nolint:errcheck // Ignore the error since invalid cases will be checked with expected results
 		result, _ := ap.Parse(ing)
 		if result != testCase.expected {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)

internal/ingress/annotations/log/main.go

@@ -101,7 +101,7 @@ func (l log) GetDocumentation() parser.AnnotationFields {
 	return l.annotationConfig.Annotations
 }
 
-func (a log) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (l log) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(l.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, logAnnotations.Annotations)
 }

internal/ingress/annotations/log/main_test.go

@@ -76,7 +76,10 @@ func TestIngressAccessLogConfig(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(enableAccessLogAnnotation)] = "false"
 	ing.SetAnnotations(data)
 
-	log, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	log, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	nginxLogs, ok := log.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -94,7 +97,10 @@ func TestIngressRewriteLogConfig(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(enableRewriteLogAnnotation)] = "true"
 	ing.SetAnnotations(data)
 
-	log, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	log, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error parsing annotations %v", err)
+	}
 	nginxLogs, ok := log.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -112,7 +118,10 @@ func TestInvalidBoolConfig(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(enableRewriteLogAnnotation)] = "blo"
 	ing.SetAnnotations(data)
 
-	log, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	log, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	nginxLogs, ok := log.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")

internal/ingress/annotations/mirror/main.go

@@ -34,15 +34,13 @@ const (
 	mirrorHostAnnotation        = "mirror-host"
 )
 
-var (
-	OnOffRegex = regexp.MustCompile(`^(on|off)$`)
-)
+var OnOffRegex = regexp.MustCompile(`^(on|off)$`)
 
 var mirrorAnnotation = parser.Annotation{
 	Group: "mirror",
 	Annotations: parser.AnnotationFields{
 		mirrorRequestBodyAnnotation: {
-			Validator:     parser.ValidateRegex(*OnOffRegex, true),
+			Validator:     parser.ValidateRegex(OnOffRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation defines if the request-body should be sent to the mirror backend. Can be 'on' or 'off'`,

internal/ingress/annotations/modsecurity/main.go

@@ -27,7 +27,7 @@ import (
 const (
 	modsecEnableAnnotation          = "enable-modsecurity"
 	modsecEnableOwaspCoreAnnotation = "enable-owasp-core-rules"
-	modesecTransactionIdAnnotation  = "modsecurity-transaction-id"
+	modesecTransactionIDAnnotation  = "modsecurity-transaction-id"
 	modsecSnippetAnnotation         = "modsecurity-snippet"
 )
 
@@ -46,8 +46,8 @@ var modsecurityAnnotation = parser.Annotation{
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation enables the OWASP Core Rule Set`,
 		},
-		modesecTransactionIdAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.NGINXVariable, true),
+		modesecTransactionIDAnnotation: {
+			Validator:     parser.ValidateRegex(parser.NGINXVariable, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskHigh,
 			Documentation: `This annotation enables passing an NGINX variable to ModSecurity.`,
@@ -98,9 +98,9 @@ func (modsec1 *Config) Equal(modsec2 *Config) bool {
 }
 
 // NewParser creates a new ModSecurity annotation parser
-func NewParser(resolver resolver.Resolver) parser.IngressAnnotation {
+func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 	return modSecurity{
-		r:                resolver,
+		r:                r,
 		annotationConfig: modsecurityAnnotation,
 	}
 }
@@ -134,10 +134,10 @@ func (a modSecurity) Parse(ing *networking.Ingress) (interface{}, error) {
 		config.OWASPRules = false
 	}
 
-	config.TransactionID, err = parser.GetStringAnnotation(modesecTransactionIdAnnotation, ing, a.annotationConfig.Annotations)
+	config.TransactionID, err = parser.GetStringAnnotation(modesecTransactionIDAnnotation, ing, a.annotationConfig.Annotations)
 	if err != nil {
 		if errors.IsInvalidContent(err) {
-			klog.Warningf("annotation %s contains invalid directive, defaulting", modesecTransactionIdAnnotation)
+			klog.Warningf("annotation %s contains invalid directive, defaulting", modesecTransactionIDAnnotation)
 		}
 		config.TransactionID = ""
 	}

internal/ingress/annotations/modsecurity/main_test.go

@@ -69,8 +69,14 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
-		result, _ := ap.Parse(ing)
-		config := result.(*Config)
+		result, err := ap.Parse(ing)
+		if err != nil {
+			t.Errorf("unexpected error: %v", err)
+		}
+		config, ok := result.(*Config)
+		if !ok {
+			t.Errorf("unexpected type: %T", result)
+		}
 		if !config.Equal(&testCase.expected) {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)
 		}

internal/ingress/annotations/opentelemetry/main.go

@@ -51,7 +51,7 @@ var otelAnnotations = parser.Annotation{
 			Documentation: `This annotation enables or disables using spans from incoming requests as parent for created ones`,
 		},
 		otelOperationNameAnnotation: {
-			Validator:     parser.ValidateRegex(*regexOperationName, true),
+			Validator:     parser.ValidateRegex(regexOperationName, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines what operation name should be added to the span`,
@@ -75,7 +75,6 @@ type Config struct {
 
 // Equal tests for equality between two Config types
 func (bd1 *Config) Equal(bd2 *Config) bool {
-
 	if bd1.Set != bd2.Set {
 		return false
 	}
@@ -150,7 +149,7 @@ func (c opentelemetry) GetDocumentation() parser.AnnotationFields {
 	return c.annotationConfig.Annotations
 }
 
-func (a opentelemetry) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (c opentelemetry) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(c.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, otelAnnotations.Annotations)
 }

internal/ingress/annotations/opentelemetry/main_test.go

@@ -26,6 +26,8 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
+const enableAnnotation = "true"
+
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
 		Service: &networking.IngressServiceBackend{
@@ -73,10 +75,13 @@ func TestIngressAnnotationOpentelemetrySetTrue(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = "true"
+	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = enableAnnotation
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	openTelemetry, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -103,7 +108,10 @@ func TestIngressAnnotationOpentelemetrySetFalse(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = "false"
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	openTelemetry, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -123,8 +131,8 @@ func TestIngressAnnotationOpentelemetryTrustSetTrue(t *testing.T) {
 
 	data := map[string]string{}
 	opName := "foo-op"
-	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = "true"
-	data[parser.GetAnnotationWithPrefix(otelTrustSpanAnnotation)] = "true"
+	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = enableAnnotation
+	data[parser.GetAnnotationWithPrefix(otelTrustSpanAnnotation)] = enableAnnotation
 	data[parser.GetAnnotationWithPrefix(otelOperationNameAnnotation)] = opName
 	ing.SetAnnotations(data)
 
@@ -163,7 +171,7 @@ func TestIngressAnnotationOpentelemetryWithBadOpName(t *testing.T) {
 
 	data := map[string]string{}
 	opName := "fooxpto_123$la;"
-	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = "true"
+	data[parser.GetAnnotationWithPrefix(enableOpenTelemetryAnnotation)] = enableAnnotation
 	data[parser.GetAnnotationWithPrefix(otelOperationNameAnnotation)] = opName
 	ing.SetAnnotations(data)
 
@@ -180,7 +188,10 @@ func TestIngressAnnotationOpentelemetryUnset(t *testing.T) {
 	data := map[string]string{}
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	_, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")

internal/ingress/annotations/opentracing/main.go

@@ -89,13 +89,13 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 	}
 }
 
-func (s opentracing) Parse(ing *networking.Ingress) (interface{}, error) {
-	enabled, err := parser.GetBoolAnnotation(enableOpentracingAnnotation, ing, s.annotationConfig.Annotations)
+func (o opentracing) Parse(ing *networking.Ingress) (interface{}, error) {
+	enabled, err := parser.GetBoolAnnotation(enableOpentracingAnnotation, ing, o.annotationConfig.Annotations)
 	if err != nil {
 		return &Config{}, nil
 	}
 
-	trustSpan, err := parser.GetBoolAnnotation(opentracingTrustSpanAnnotation, ing, s.annotationConfig.Annotations)
+	trustSpan, err := parser.GetBoolAnnotation(opentracingTrustSpanAnnotation, ing, o.annotationConfig.Annotations)
 	if err != nil {
 		return &Config{Set: true, Enabled: enabled}, nil
 	}
@@ -103,11 +103,11 @@ func (s opentracing) Parse(ing *networking.Ingress) (interface{}, error) {
 	return &Config{Set: true, Enabled: enabled, TrustSet: true, TrustEnabled: trustSpan}, nil
 }
 
-func (s opentracing) GetDocumentation() parser.AnnotationFields {
-	return s.annotationConfig.Annotations
+func (o opentracing) GetDocumentation() parser.AnnotationFields {
+	return o.annotationConfig.Annotations
 }
 
-func (a opentracing) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (o opentracing) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(o.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, opentracingAnnotations.Annotations)
 }

internal/ingress/annotations/opentracing/main_test.go

@@ -26,6 +26,8 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
+const enableAnnotation = "true"
+
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
 		Service: &networking.IngressServiceBackend{
@@ -73,10 +75,13 @@ func TestIngressAnnotationOpentracingSetTrue(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(enableOpentracingAnnotation)] = "true"
+	data[parser.GetAnnotationWithPrefix(enableOpentracingAnnotation)] = enableAnnotation
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
 	openTracing, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -95,7 +100,10 @@ func TestIngressAnnotationOpentracingSetFalse(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(enableOpentracingAnnotation)] = "false"
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
 	openTracing, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -110,11 +118,14 @@ func TestIngressAnnotationOpentracingTrustSetTrue(t *testing.T) {
 	ing := buildIngress()
 
 	data := map[string]string{}
-	data[parser.GetAnnotationWithPrefix(enableOpentracingAnnotation)] = "true"
-	data[parser.GetAnnotationWithPrefix(opentracingTrustSpanAnnotation)] = "true"
+	data[parser.GetAnnotationWithPrefix(enableOpentracingAnnotation)] = enableAnnotation
+	data[parser.GetAnnotationWithPrefix(opentracingTrustSpanAnnotation)] = enableAnnotation
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
 	openTracing, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")
@@ -136,7 +147,11 @@ func TestIngressAnnotationOpentracingUnset(t *testing.T) {
 	data := map[string]string{}
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+
 	_, ok := val.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")

internal/ingress/annotations/parser/main.go

@@ -118,7 +118,7 @@ func (a ingAnnotations) parseString(name string) (string, error) {
 	val, ok := a[name]
 	if ok {
 		s := normalizeString(val)
-		if len(s) == 0 {
+		if s == "" {
 			return "", errors.NewInvalidAnnotationContent(name, val)
 		}
 
@@ -248,13 +248,14 @@ func StringToURL(input string) (*url.URL, error) {
 		return nil, fmt.Errorf("%v is not a valid URL: %v", input, err)
 	}
 
-	if parsedURL.Scheme == "" {
+	switch {
+	case parsedURL.Scheme == "":
 		return nil, fmt.Errorf("url scheme is empty")
-	} else if parsedURL.Host == "" {
+	case parsedURL.Host == "":
 		return nil, fmt.Errorf("url host is empty")
-	} else if strings.Contains(parsedURL.Host, "..") {
+	case strings.Contains(parsedURL.Host, ".."):
 		return nil, fmt.Errorf("invalid url host")
-	}
-
+	default:
 		return parsedURL, nil
+	}
 }

internal/ingress/annotations/parser/main_test.go

@@ -93,14 +93,16 @@ func TestGetStringAnnotation(t *testing.T) {
 		{"valid - A", "string", "A ", "A", false},
 		{"valid - B", "string", "	B", "B", false},
 		{"empty", "string", " ", "", true},
-		{"valid multiline", "string", `
+		{
+			"valid multiline", "string", `
 		rewrite (?i)/arcgis/rest/services/Utilities/Geometry/GeometryServer(.*)$ /arcgis/rest/services/Utilities/Geometry/GeometryServer$1 break;
 		rewrite (?i)/arcgis/services/Utilities/Geometry/GeometryServer(.*)$ /arcgis/services/Utilities/Geometry/GeometryServer$1 break;
 		`, `
 rewrite (?i)/arcgis/rest/services/Utilities/Geometry/GeometryServer(.*)$ /arcgis/rest/services/Utilities/Geometry/GeometryServer$1 break;
 rewrite (?i)/arcgis/services/Utilities/Geometry/GeometryServer(.*)$ /arcgis/services/Utilities/Geometry/GeometryServer$1 break;
 `,
-			false},
+			false,
+		},
 	}
 
 	data := map[string]string{}
@@ -213,8 +215,10 @@ func TestGetIntAnnotation(t *testing.T) {
 
 func TestStringToURL(t *testing.T) {
 	validURL := "http://bar.foo.com/external-auth"
-	validParsedURL, _ := url.Parse(validURL)
-
+	validParsedURL, err := url.Parse(validURL)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	tests := []struct {
 		title   string
 		url     string

internal/ingress/annotations/parser/validators.go

@@ -52,7 +52,7 @@ var (
 var IsValidRegex = regexp.MustCompile("^[/" + alphaNumericChars + regexEnabledChars + "]*$")
 
 // SizeRegex validates sizes understood by NGINX, like 1000, 100k, 1000M
-var SizeRegex = regexp.MustCompile("^(?i)[0-9]+[bkmg]?$")
+var SizeRegex = regexp.MustCompile(`^(?i)\d+[bkmg]?$`)
 
 // URLRegex is used to validate a URL but with only a specific set of characters:
 // It is alphanumericChar + ":", "?", "&"
@@ -103,7 +103,7 @@ func ValidateServerName(value string) error {
 // ValidateRegex receives a regex as an argument and uses it to validate
 // the value of the field.
 // Annotation can define if the spaces should be trimmed before validating the value
-func ValidateRegex(regex regexp.Regexp, removeSpace bool) AnnotationValidator {
+func ValidateRegex(regex *regexp.Regexp, removeSpace bool) AnnotationValidator {
 	return func(s string) error {
 		if removeSpace {
 			s = strings.ReplaceAll(s, " ", "")
@@ -117,7 +117,7 @@ func ValidateRegex(regex regexp.Regexp, removeSpace bool) AnnotationValidator {
 
 // ValidateOptions receives an array of valid options that can be the value of annotation.
 // If no valid option is found, it will return an error
-func ValidateOptions(options []string, caseSensitive bool, trimSpace bool) AnnotationValidator {
+func ValidateOptions(options []string, caseSensitive, trimSpace bool) AnnotationValidator {
 	return func(s string) error {
 		if trimSpace {
 			s = strings.TrimSpace(s)
@@ -161,7 +161,7 @@ func ValidateDuration(value string) error {
 // ValidateNull always return null values and should not be widely used.
 // It is used on the "snippet" annotations, as it is up to the admin to allow its
 // usage, knowing it can be critical!
-func ValidateNull(value string) error {
+func ValidateNull(_ string) error {
 	return nil
 }
 

internal/ingress/annotations/parser/validators_test.go

@@ -223,7 +223,6 @@ func Test_checkAnnotation(t *testing.T) {
 }
 
 func TestCheckAnnotationRisk(t *testing.T) {
-
 	tests := []struct {
 		name        string
 		annotations map[string]string

internal/ingress/annotations/proxy/main.go

@@ -45,9 +45,7 @@ const (
 	proxyMaxTempFileSizeAnnotation     = "proxy-max-temp-file-size"
 )
 
-var (
-	validUpstreamAnnotation = regexp.MustCompile(`^((error|timeout|invalid_header|http_500|http_502|http_503|http_504|http_403|http_404|http_429|non_idempotent|off)\s?)+$`)
-)
+var validUpstreamAnnotation = regexp.MustCompile(`^((error|timeout|invalid_header|http_500|http_502|http_503|http_504|http_403|http_404|http_429|non_idempotent|off)\s?)+$`)
 
 var proxyAnnotations = parser.Annotation{
 	Group: "backend",
@@ -78,32 +76,32 @@ var proxyAnnotations = parser.Annotation{
 			By default proxy buffers number is set as 4`,
 		},
 		proxyBufferSizeAnnotation: {
-			Validator: parser.ValidateRegex(*parser.SizeRegex, true),
+			Validator: parser.ValidateRegex(parser.SizeRegex, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskLow,
 			Documentation: `This annotation sets the size of the buffer proxy_buffer_size used for reading the first part of the response received from the proxied server. 
 			By default proxy buffer size is set as "4k".`,
 		},
 		proxyCookiePathAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLIsValidRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLIsValidRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation sets a text that should be changed in the path attribute of the "Set-Cookie" header fields of a proxied server response.`,
 		},
 		proxyCookieDomainAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator:     parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation ets a text that should be changed in the domain attribute of the "Set-Cookie" header fields of a proxied server response.`,
 		},
 		proxyBodySizeAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.SizeRegex, true),
+			Validator:     parser.ValidateRegex(parser.SizeRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation allows setting the maximum allowed size of a client request body.`,
 		},
 		proxyNextUpstreamAnnotation: {
-			Validator: parser.ValidateRegex(*validUpstreamAnnotation, false),
+			Validator: parser.ValidateRegex(validUpstreamAnnotation, false),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines when the next upstream should be used. 
@@ -129,13 +127,13 @@ var proxyAnnotations = parser.Annotation{
 			Documentation: `This annotation enables or disables buffering of a client request body.`,
 		},
 		proxyRedirectFromAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLIsValidRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLIsValidRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `The annotations proxy-redirect-from and proxy-redirect-to will set the first and second parameters of NGINX's proxy_redirect directive respectively`,
 		},
 		proxyRedirectToAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.URLIsValidRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLIsValidRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `The annotations proxy-redirect-from and proxy-redirect-to will set the first and second parameters of NGINX's proxy_redirect directive respectively`,
@@ -153,7 +151,7 @@ var proxyAnnotations = parser.Annotation{
 			Documentation: `This annotations sets the HTTP protocol version for proxying. Can be "1.0" or "1.1".`,
 		},
 		proxyMaxTempFileSizeAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.SizeRegex, true),
+			Validator:     parser.ValidateRegex(parser.SizeRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation defines the maximum size of a temporary file when buffering responses.`,
@@ -253,7 +251,8 @@ type proxy struct {
 
 // NewParser creates a new reverse proxy configuration annotation parser
 func NewParser(r resolver.Resolver) parser.IngressAnnotation {
-	return proxy{r: r,
+	return proxy{
+		r:                r,
 		annotationConfig: proxyAnnotations,
 	}
 }

internal/ingress/annotations/proxy/main_test.go

@@ -28,6 +28,12 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
+const (
+	off                  = "off"
+	proxyHTTPVersion     = "1.0"
+	proxyMaxTempFileSize = "128k"
+)
+
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
 		Service: &networking.IngressServiceBackend{
@@ -87,7 +93,7 @@ func (m mockBackend) GetDefaultBackend() defaults.Backend {
 		ProxyNextUpstreamTimeout: 0,
 		ProxyNextUpstreamTries:   3,
 		ProxyRequestBuffering:    "on",
-		ProxyBuffering:           "off",
+		ProxyBuffering:           off,
 		ProxyHTTPVersion:         "1.1",
 		ProxyMaxTempFileSize:     "1024m",
 	}
@@ -103,13 +109,13 @@ func TestProxy(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("proxy-buffers-number")] = "8"
 	data[parser.GetAnnotationWithPrefix("proxy-buffer-size")] = "1k"
 	data[parser.GetAnnotationWithPrefix("proxy-body-size")] = "2k"
-	data[parser.GetAnnotationWithPrefix("proxy-next-upstream")] = "off"
+	data[parser.GetAnnotationWithPrefix("proxy-next-upstream")] = off
 	data[parser.GetAnnotationWithPrefix("proxy-next-upstream-timeout")] = "5"
 	data[parser.GetAnnotationWithPrefix("proxy-next-upstream-tries")] = "3"
-	data[parser.GetAnnotationWithPrefix("proxy-request-buffering")] = "off"
+	data[parser.GetAnnotationWithPrefix("proxy-request-buffering")] = off
 	data[parser.GetAnnotationWithPrefix("proxy-buffering")] = "on"
-	data[parser.GetAnnotationWithPrefix("proxy-http-version")] = "1.0"
-	data[parser.GetAnnotationWithPrefix("proxy-max-temp-file-size")] = "128k"
+	data[parser.GetAnnotationWithPrefix("proxy-http-version")] = proxyHTTPVersion
+	data[parser.GetAnnotationWithPrefix("proxy-max-temp-file-size")] = proxyMaxTempFileSize
 	ing.SetAnnotations(data)
 
 	i, err := NewParser(mockBackend{}).Parse(ing)
@@ -138,7 +144,7 @@ func TestProxy(t *testing.T) {
 	if p.BodySize != "2k" {
 		t.Errorf("expected 2k as body-size but returned %v", p.BodySize)
 	}
-	if p.NextUpstream != "off" {
+	if p.NextUpstream != off {
 		t.Errorf("expected off as next-upstream but returned %v", p.NextUpstream)
 	}
 	if p.NextUpstreamTimeout != 5 {
@@ -147,16 +153,16 @@ func TestProxy(t *testing.T) {
 	if p.NextUpstreamTries != 3 {
 		t.Errorf("expected 3 as next-upstream-tries but returned %v", p.NextUpstreamTries)
 	}
-	if p.RequestBuffering != "off" {
+	if p.RequestBuffering != off {
 		t.Errorf("expected off as request-buffering but returned %v", p.RequestBuffering)
 	}
 	if p.ProxyBuffering != "on" {
 		t.Errorf("expected on as proxy-buffering but returned %v", p.ProxyBuffering)
 	}
-	if p.ProxyHTTPVersion != "1.0" {
+	if p.ProxyHTTPVersion != proxyHTTPVersion {
 		t.Errorf("expected 1.0 as proxy-http-version but returned %v", p.ProxyHTTPVersion)
 	}
-	if p.ProxyMaxTempFileSize != "128k" {
+	if p.ProxyMaxTempFileSize != proxyMaxTempFileSize {
 		t.Errorf("expected 128k as proxy-max-temp-file-size but returned %v", p.ProxyMaxTempFileSize)
 	}
 }
@@ -176,8 +182,8 @@ func TestProxyComplex(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("proxy-next-upstream-tries")] = "3"
 	data[parser.GetAnnotationWithPrefix("proxy-request-buffering")] = "off"
 	data[parser.GetAnnotationWithPrefix("proxy-buffering")] = "on"
-	data[parser.GetAnnotationWithPrefix("proxy-http-version")] = "1.0"
-	data[parser.GetAnnotationWithPrefix("proxy-max-temp-file-size")] = "128k"
+	data[parser.GetAnnotationWithPrefix("proxy-http-version")] = proxyHTTPVersion
+	data[parser.GetAnnotationWithPrefix("proxy-max-temp-file-size")] = proxyMaxTempFileSize
 	ing.SetAnnotations(data)
 
 	i, err := NewParser(mockBackend{}).Parse(ing)
@@ -221,10 +227,10 @@ func TestProxyComplex(t *testing.T) {
 	if p.ProxyBuffering != "on" {
 		t.Errorf("expected on as proxy-buffering but returned %v", p.ProxyBuffering)
 	}
-	if p.ProxyHTTPVersion != "1.0" {
+	if p.ProxyHTTPVersion != proxyHTTPVersion {
 		t.Errorf("expected 1.0 as proxy-http-version but returned %v", p.ProxyHTTPVersion)
 	}
-	if p.ProxyMaxTempFileSize != "128k" {
+	if p.ProxyMaxTempFileSize != proxyMaxTempFileSize {
 		t.Errorf("expected 128k as proxy-max-temp-file-size but returned %v", p.ProxyMaxTempFileSize)
 	}
 }

internal/ingress/annotations/proxyssl/main.go

@@ -24,7 +24,6 @@ import (
 
 	networking "k8s.io/api/networking/v1"
 	"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
-	"k8s.io/ingress-nginx/internal/ingress/errors"
 	ing_errors "k8s.io/ingress-nginx/internal/ingress/errors"
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 	"k8s.io/ingress-nginx/internal/k8s"
@@ -42,7 +41,7 @@ const (
 var (
 	proxySSLOnOffRegex    = regexp.MustCompile(`^(on|off)$`)
 	proxySSLProtocolRegex = regexp.MustCompile(`^(SSLv2|SSLv3|TLSv1|TLSv1\.1|TLSv1\.2|TLSv1\.3| )*$`)
-	proxySSLCiphersRegex  = regexp.MustCompile(`^[A-Za-z0-9\+\:\_\-\!]*$`)
+	proxySSLCiphersRegex  = regexp.MustCompile(`^[A-Za-z0-9\+:\_\-!]*$`)
 )
 
 const (
@@ -59,7 +58,7 @@ var proxySSLAnnotation = parser.Annotation{
 	Group: "proxy",
 	Annotations: parser.AnnotationFields{
 		proxySSLSecretAnnotation: {
-			Validator: parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator: parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation specifies a Secret with the certificate tls.crt, key tls.key in PEM format used for authentication to a proxied HTTPS server. 
@@ -68,14 +67,14 @@ var proxySSLAnnotation = parser.Annotation{
 			Just secrets on the same namespace of the ingress can be used.`,
 		},
 		proxySSLCiphersAnnotation: {
-			Validator: parser.ValidateRegex(*proxySSLCiphersRegex, true),
+			Validator: parser.ValidateRegex(proxySSLCiphersRegex, true),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation Specifies the enabled ciphers for requests to a proxied HTTPS server. 
 			The ciphers are specified in the format understood by the OpenSSL library.`,
 		},
 		proxySSLProtocolsAnnotation: {
-			Validator:     parser.ValidateRegex(*proxySSLProtocolRegex, true),
+			Validator:     parser.ValidateRegex(proxySSLProtocolRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation enables the specified protocols for requests to a proxied HTTPS server.`,
@@ -88,7 +87,7 @@ var proxySSLAnnotation = parser.Annotation{
 			This value is also passed through SNI when a connection is established to the proxied HTTPS server.`,
 		},
 		proxySSLVerifyAnnotation: {
-			Validator:     parser.ValidateRegex(*proxySSLOnOffRegex, true),
+			Validator:     parser.ValidateRegex(proxySSLOnOffRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation enables or disables verification of the proxied HTTPS server certificate. (default: off)`,
@@ -100,7 +99,7 @@ var proxySSLAnnotation = parser.Annotation{
 			Documentation: `This annotation Sets the verification depth in the proxied HTTPS server certificates chain. (default: 1).`,
 		},
 		proxySSLServerNameAnnotation: {
-			Validator:     parser.ValidateRegex(*proxySSLOnOffRegex, true),
+			Validator:     parser.ValidateRegex(proxySSLOnOffRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation enables passing of the server name through TLS Server Name Indication extension (SNI, RFC 6066) when establishing a connection with the proxied HTTPS server.`,
@@ -150,10 +149,11 @@ func (pssl1 *Config) Equal(pssl2 *Config) bool {
 }
 
 // NewParser creates a new TLS authentication annotation parser
-func NewParser(resolver resolver.Resolver) parser.IngressAnnotation {
+func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 	return proxySSL{
-		r:                resolver,
-		annotationConfig: proxySSLAnnotation}
+		r:                r,
+		annotationConfig: proxySSLAnnotation,
+	}
 }
 
 type proxySSL struct {
@@ -208,13 +208,13 @@ func (p proxySSL) Parse(ing *networking.Ingress) (interface{}, error) {
 	proxyCert, err := p.r.GetAuthCertificate(proxysslsecret)
 	if err != nil {
 		e := fmt.Errorf("error obtaining certificate: %w", err)
-		return &Config{}, ing_errors.LocationDenied{Reason: e}
+		return &Config{}, ing_errors.LocationDeniedError{Reason: e}
 	}
 	config.AuthSSLCert = *proxyCert
 
 	config.Ciphers, err = parser.GetStringAnnotation(proxySSLCiphersAnnotation, ing, p.annotationConfig.Annotations)
 	if err != nil {
-		if errors.IsValidationError(err) {
+		if ing_errors.IsValidationError(err) {
 			klog.Warningf("invalid value passed to proxy-ssl-ciphers, defaulting to %s", defaultProxySSLCiphers)
 		}
 		config.Ciphers = defaultProxySSLCiphers
@@ -222,7 +222,7 @@ func (p proxySSL) Parse(ing *networking.Ingress) (interface{}, error) {
 
 	config.Protocols, err = parser.GetStringAnnotation(proxySSLProtocolsAnnotation, ing, p.annotationConfig.Annotations)
 	if err != nil {
-		if errors.IsValidationError(err) {
+		if ing_errors.IsValidationError(err) {
 			klog.Warningf("invalid value passed to proxy-ssl-protocols, defaulting to %s", defaultProxySSLProtocols)
 		}
 		config.Protocols = defaultProxySSLProtocols
@@ -232,7 +232,7 @@ func (p proxySSL) Parse(ing *networking.Ingress) (interface{}, error) {
 
 	config.ProxySSLName, err = parser.GetStringAnnotation(proxySSLNameAnnotation, ing, p.annotationConfig.Annotations)
 	if err != nil {
-		if errors.IsValidationError(err) {
+		if ing_errors.IsValidationError(err) {
 			klog.Warningf("invalid value passed to proxy-ssl-name, defaulting to empty")
 		}
 		config.ProxySSLName = ""
@@ -260,7 +260,7 @@ func (p proxySSL) GetDocumentation() parser.AnnotationFields {
 	return p.annotationConfig.Annotations
 }
 
-func (a proxySSL) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (p proxySSL) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(p.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, proxySSLAnnotation.Annotations)
 }

internal/ingress/annotations/proxyssl/main_test.go

@@ -27,6 +27,14 @@ import (
 	"k8s.io/ingress-nginx/internal/ingress/resolver"
 )
 
+const (
+	defaultDemoSecret = "default/demo-secret"
+	proxySslCiphers   = "HIGH:-SHA"
+	off               = "off"
+	sslServerName     = "w00t"
+	defaultProtocol   = "SSLv2 TLSv1 TLSv1.2 TLSv1.3"
+)
+
 func buildIngress() *networking.Ingress {
 	defaultBackend := networking.IngressBackend{
 		Service: &networking.IngressServiceBackend{
@@ -77,28 +85,27 @@ type mockSecret struct {
 
 // GetAuthCertificate from mockSecret mocks the GetAuthCertificate for backend certificate authentication
 func (m mockSecret) GetAuthCertificate(name string) (*resolver.AuthSSLCert, error) {
-	if name != "default/demo-secret" {
+	if name != defaultDemoSecret {
 		return nil, errors.Errorf("there is no secret with name %v", name)
 	}
 
 	return &resolver.AuthSSLCert{
-		Secret:     "default/demo-secret",
+		Secret:     defaultDemoSecret,
 		CAFileName: "/ssl/ca.crt",
 		CASHA:      "abc",
 	}, nil
-
 }
 
 func TestAnnotations(t *testing.T) {
 	ing := buildIngress()
 	data := map[string]string{}
 
-	data[parser.GetAnnotationWithPrefix(proxySSLSecretAnnotation)] = "default/demo-secret"
-	data[parser.GetAnnotationWithPrefix("proxy-ssl-ciphers")] = "HIGH:-SHA"
+	data[parser.GetAnnotationWithPrefix(proxySSLSecretAnnotation)] = defaultDemoSecret
+	data[parser.GetAnnotationWithPrefix("proxy-ssl-ciphers")] = proxySslCiphers
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-name")] = "$host"
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-protocols")] = "TLSv1.3 SSLv2 TLSv1   TLSv1.2"
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-server-name")] = "on"
-	data[parser.GetAnnotationWithPrefix("proxy-ssl-session-reuse")] = "off"
+	data[parser.GetAnnotationWithPrefix("proxy-ssl-session-reuse")] = off
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-verify")] = "on"
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-verify-depth")] = "3"
 
@@ -115,7 +122,7 @@ func TestAnnotations(t *testing.T) {
 		t.Errorf("expected *Config but got %v", u)
 	}
 
-	secret, err := fakeSecret.GetAuthCertificate("default/demo-secret")
+	secret, err := fakeSecret.GetAuthCertificate(defaultDemoSecret)
 	if err != nil {
 		t.Errorf("unexpected error getting secret %v", err)
 	}
@@ -123,11 +130,11 @@ func TestAnnotations(t *testing.T) {
 	if u.AuthSSLCert.Secret != secret.Secret {
 		t.Errorf("expected %v but got %v", secret.Secret, u.AuthSSLCert.Secret)
 	}
-	if u.Ciphers != "HIGH:-SHA" {
-		t.Errorf("expected %v but got %v", "HIGH:-SHA", u.Ciphers)
+	if u.Ciphers != proxySslCiphers {
+		t.Errorf("expected %v but got %v", proxySslCiphers, u.Ciphers)
 	}
-	if u.Protocols != "SSLv2 TLSv1 TLSv1.2 TLSv1.3" {
-		t.Errorf("expected %v but got %v", "SSLv2 TLSv1 TLSv1.2 TLSv1.3", u.Protocols)
+	if u.Protocols != defaultProtocol {
+		t.Errorf("expected %v but got %v", defaultProtocol, u.Protocols)
 	}
 	if u.Verify != "on" {
 		t.Errorf("expected %v but got %v", "on", u.Verify)
@@ -141,7 +148,6 @@ func TestAnnotations(t *testing.T) {
 	if u.ProxySSLServerName != "on" {
 		t.Errorf("expected %v but got %v", "on", u.ProxySSLServerName)
 	}
-
 }
 
 func TestInvalidAnnotations(t *testing.T) {
@@ -172,11 +178,11 @@ func TestInvalidAnnotations(t *testing.T) {
 	}
 
 	// Invalid optional Annotations
-	data[parser.GetAnnotationWithPrefix("proxy-ssl-secret")] = "default/demo-secret"
+	data[parser.GetAnnotationWithPrefix("proxy-ssl-secret")] = defaultDemoSecret
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-protocols")] = "TLSv111 SSLv1"
-	data[parser.GetAnnotationWithPrefix("proxy-ssl-server-name")] = "w00t"
-	data[parser.GetAnnotationWithPrefix("proxy-ssl-session-reuse")] = "w00t"
-	data[parser.GetAnnotationWithPrefix("proxy-ssl-verify")] = "w00t"
+	data[parser.GetAnnotationWithPrefix("proxy-ssl-server-name")] = sslServerName
+	data[parser.GetAnnotationWithPrefix("proxy-ssl-session-reuse")] = sslServerName
+	data[parser.GetAnnotationWithPrefix("proxy-ssl-verify")] = sslServerName
 	data[parser.GetAnnotationWithPrefix("proxy-ssl-verify-depth")] = "abcd"
 	ing.SetAnnotations(data)
 
@@ -207,21 +213,15 @@ func TestEquals(t *testing.T) {
 	cfg1 := &Config{}
 	cfg2 := &Config{}
 
-	// Same config
-	result := cfg1.Equal(cfg1)
-	if result != true {
-		t.Errorf("Expected true")
-	}
-
 	// compare nil
-	result = cfg1.Equal(nil)
+	result := cfg1.Equal(nil)
 	if result != false {
 		t.Errorf("Expected false")
 	}
 
 	// Different Certs
 	sslCert1 := resolver.AuthSSLCert{
-		Secret:     "default/demo-secret",
+		Secret:     defaultDemoSecret,
 		CAFileName: "/ssl/ca.crt",
 		CASHA:      "abc",
 	}
@@ -240,7 +240,7 @@ func TestEquals(t *testing.T) {
 
 	// Different Ciphers
 	cfg1.Ciphers = "DEFAULT"
-	cfg2.Ciphers = "HIGH:-SHA"
+	cfg2.Ciphers = proxySslCiphers
 	result = cfg1.Equal(cfg2)
 	if result != false {
 		t.Errorf("Expected false")
@@ -248,22 +248,22 @@ func TestEquals(t *testing.T) {
 	cfg2.Ciphers = "DEFAULT"
 
 	// Different Protocols
-	cfg1.Protocols = "SSLv2 TLSv1 TLSv1.2 TLSv1.3"
+	cfg1.Protocols = defaultProtocol
 	cfg2.Protocols = "SSLv3 TLSv1 TLSv1.2 TLSv1.3"
 	result = cfg1.Equal(cfg2)
 	if result != false {
 		t.Errorf("Expected false")
 	}
-	cfg2.Protocols = "SSLv2 TLSv1 TLSv1.2 TLSv1.3"
+	cfg2.Protocols = defaultProtocol
 
 	// Different Verify
-	cfg1.Verify = "off"
+	cfg1.Verify = off
 	cfg2.Verify = "on"
 	result = cfg1.Equal(cfg2)
 	if result != false {
 		t.Errorf("Expected false")
 	}
-	cfg2.Verify = "off"
+	cfg2.Verify = off
 
 	// Different VerifyDepth
 	cfg1.VerifyDepth = 1
@@ -275,13 +275,13 @@ func TestEquals(t *testing.T) {
 	cfg2.VerifyDepth = 1
 
 	// Different ProxySSLServerName
-	cfg1.ProxySSLServerName = "off"
+	cfg1.ProxySSLServerName = off
 	cfg2.ProxySSLServerName = "on"
 	result = cfg1.Equal(cfg2)
 	if result != false {
 		t.Errorf("Expected false")
 	}
-	cfg2.ProxySSLServerName = "off"
+	cfg2.ProxySSLServerName = off
 
 	// Equal Configs
 	result = cfg1.Equal(cfg2)

internal/ingress/annotations/ratelimit/main.go

@@ -288,7 +288,7 @@ func (a ratelimit) Parse(ing *networking.Ingress) (interface{}, error) {
 
 func encode(s string) string {
 	str := base64.URLEncoding.EncodeToString([]byte(s))
-	return strings.Replace(str, "=", "", -1)
+	return strings.ReplaceAll(str, "=", "")
 }
 
 func (a ratelimit) GetDocumentation() parser.AnnotationFields {

internal/ingress/annotations/redirect/redirect.go

@@ -54,14 +54,14 @@ var redirectAnnotations = parser.Annotation{
 			Documentation: `In some scenarios is required to redirect from www.domain.com to domain.com or vice versa. To enable this feature use this annotation.`,
 		},
 		temporalRedirectAnnotation: {
-			Validator: parser.ValidateRegex(*parser.URLIsValidRegex, false),
+			Validator: parser.ValidateRegex(parser.URLIsValidRegex, false),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskMedium, // Medium, as it allows arbitrary URLs that needs to be validated
 			Documentation: `This annotation allows you to return a temporal redirect (Return Code 302) instead of sending data to the upstream. 
 			For example setting this annotation to https://www.google.com would redirect everything to Google with a Return Code of 302 (Moved Temporarily).`,
 		},
 		permanentRedirectAnnotation: {
-			Validator: parser.ValidateRegex(*parser.URLIsValidRegex, false),
+			Validator: parser.ValidateRegex(parser.URLIsValidRegex, false),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskMedium, // Medium, as it allows arbitrary URLs that needs to be validated
 			Documentation: `This annotation allows to return a permanent redirect (Return Code 301) instead of sending data to the upstream. 
@@ -174,11 +174,11 @@ func isValidURL(s string) error {
 	return nil
 }
 
-func (a redirect) GetDocumentation() parser.AnnotationFields {
-	return a.annotationConfig.Annotations
+func (r redirect) GetDocumentation() parser.AnnotationFields {
+	return r.annotationConfig.Annotations
 }
 
-func (a redirect) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (r redirect) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(r.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, redirectAnnotations.Annotations)
 }

internal/ingress/annotations/redirect/redirect_test.go

@@ -136,7 +136,6 @@ func TestTemporalRedirect(t *testing.T) {
 }
 
 func TestIsValidURL(t *testing.T) {
-
 	invalid := "ok.com"
 	urlParse, err := url.Parse(invalid)
 	if err != nil {

internal/ingress/annotations/rewrite/main.go

@@ -40,7 +40,7 @@ var rewriteAnnotations = parser.Annotation{
 	Group: "rewrite",
 	Annotations: parser.AnnotationFields{
 		rewriteTargetAnnotation: {
-			Validator: parser.ValidateRegex(*parser.RegexPathWithCapture, false),
+			Validator: parser.ValidateRegex(parser.RegexPathWithCapture, false),
 			Scope:     parser.AnnotationScopeIngress,
 			Risk:      parser.AnnotationRiskMedium,
 			Documentation: `This annotation allows to specify the target URI where the traffic must be redirected. It can contain regular characters and captured 
@@ -72,7 +72,7 @@ var rewriteAnnotations = parser.Annotation{
 			the pathType should also be defined as 'ImplementationSpecific'.`,
 		},
 		appRootAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.RegexPathWithCapture, false),
+			Validator:     parser.ValidateRegex(parser.RegexPathWithCapture, false),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines the Application Root that the Controller must redirect if it's in / context`,

internal/ingress/annotations/rewrite/main_test.go

@@ -120,7 +120,10 @@ func TestSSLRedirect(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("rewrite-target")] = defRoute
 	ing.SetAnnotations(data)
 
-	i, _ := NewParser(mockBackend{redirect: true}).Parse(ing)
+	i, err := NewParser(mockBackend{redirect: true}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok := i.(*Config)
 	if !ok {
 		t.Errorf("expected a Redirect type")
@@ -132,7 +135,10 @@ func TestSSLRedirect(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("rewrite-target")] = "/xpto/$1/abc/$2"
 	ing.SetAnnotations(data)
 
-	i, _ = NewParser(mockBackend{redirect: true}).Parse(ing)
+	i, err = NewParser(mockBackend{redirect: true}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok = i.(*Config)
 	if !ok {
 		t.Errorf("expected a Redirect type")
@@ -144,7 +150,10 @@ func TestSSLRedirect(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("rewrite-target")] = "/xpto/xas{445}"
 	ing.SetAnnotations(data)
 
-	i, _ = NewParser(mockBackend{redirect: true}).Parse(ing)
+	i, err = NewParser(mockBackend{redirect: true}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok = i.(*Config)
 	if !ok {
 		t.Errorf("expected a Redirect type")
@@ -156,7 +165,10 @@ func TestSSLRedirect(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("ssl-redirect")] = "false"
 	ing.SetAnnotations(data)
 
-	i, _ = NewParser(mockBackend{redirect: false}).Parse(ing)
+	i, err = NewParser(mockBackend{redirect: false}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok = i.(*Config)
 	if !ok {
 		t.Errorf("expected a Redirect type")
@@ -173,7 +185,10 @@ func TestForceSSLRedirect(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("rewrite-target")] = defRoute
 	ing.SetAnnotations(data)
 
-	i, _ := NewParser(mockBackend{redirect: true}).Parse(ing)
+	i, err := NewParser(mockBackend{redirect: true}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok := i.(*Config)
 	if !ok {
 		t.Errorf("expected a Redirect type")
@@ -185,7 +200,10 @@ func TestForceSSLRedirect(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("force-ssl-redirect")] = "true"
 	ing.SetAnnotations(data)
 
-	i, _ = NewParser(mockBackend{redirect: false}).Parse(ing)
+	i, err = NewParser(mockBackend{redirect: false}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok = i.(*Config)
 	if !ok {
 		t.Errorf("expected a Redirect type")
@@ -194,6 +212,7 @@ func TestForceSSLRedirect(t *testing.T) {
 		t.Errorf("Expected true but returned false")
 	}
 }
+
 func TestAppRoot(t *testing.T) {
 	ap := NewParser(mockBackend{redirect: true})
 
@@ -241,7 +260,10 @@ func TestUseRegex(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix("use-regex")] = "true"
 	ing.SetAnnotations(data)
 
-	i, _ := NewParser(mockBackend{redirect: true}).Parse(ing)
+	i, err := NewParser(mockBackend{redirect: true}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	redirect, ok := i.(*Config)
 	if !ok {
 		t.Errorf("expected a App Context")

internal/ingress/annotations/satisfy/main.go

@@ -69,7 +69,7 @@ func (s satisfy) GetDocumentation() parser.AnnotationFields {
 	return s.annotationConfig.Annotations
 }
 
-func (a satisfy) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (s satisfy) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(s.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, satisfyAnnotations.Annotations)
 }

internal/ingress/annotations/serversnippet/main_test.go

@@ -54,6 +54,7 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
+		//nolint:errcheck // Ignore the error since invalid cases will be checked with expected results
 		result, _ := ap.Parse(ing)
 		if result != testCase.expected {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)

internal/ingress/annotations/serviceupstream/main.go

@@ -69,7 +69,7 @@ func (s serviceUpstream) GetDocumentation() parser.AnnotationFields {
 	return s.annotationConfig.Annotations
 }
 
-func (a serviceUpstream) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (s serviceUpstream) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(s.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, serviceUpstreamAnnotations.Annotations)
 }

internal/ingress/annotations/serviceupstream/main_test.go

@@ -77,7 +77,10 @@ func TestIngressAnnotationServiceUpstreamEnabled(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(serviceUpstreamAnnotation)] = "true"
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	enabled, ok := val.(bool)
 	if !ok {
 		t.Errorf("expected a bool type")
@@ -96,7 +99,10 @@ func TestIngressAnnotationServiceUpstreamSetFalse(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(serviceUpstreamAnnotation)] = "false"
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	val, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	enabled, ok := val.(bool)
 	if !ok {
 		t.Errorf("expected a bool type")
@@ -110,7 +116,10 @@ func TestIngressAnnotationServiceUpstreamSetFalse(t *testing.T) {
 	data = map[string]string{}
 	ing.SetAnnotations(data)
 
-	val, _ = NewParser(&resolver.Mock{}).Parse(ing)
+	val, err = NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	enabled, ok = val.(bool)
 	if !ok {
 		t.Errorf("expected a bool type")
@@ -137,7 +146,10 @@ func (m mockBackend) GetDefaultBackend() defaults.Backend {
 func TestParseAnnotationsWithDefaultConfig(t *testing.T) {
 	ing := buildIngress()
 
-	val, _ := NewParser(mockBackend{}).Parse(ing)
+	val, err := NewParser(mockBackend{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	enabled, ok := val.(bool)
 
 	if !ok {
@@ -158,7 +170,10 @@ func TestParseAnnotationsOverridesDefaultConfig(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(serviceUpstreamAnnotation)] = "false"
 	ing.SetAnnotations(data)
 
-	val, _ := NewParser(mockBackend{}).Parse(ing)
+	val, err := NewParser(mockBackend{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
 	enabled, ok := val.(bool)
 
 	if !ok {

internal/ingress/annotations/sessionaffinity/main.go

@@ -63,13 +63,15 @@ const (
 
 	// This is used to control the cookie change after request failure
 	annotationAffinityCookieChangeOnFailure = "session-cookie-change-on-failure"
+
+	cookieAffinity = "cookie"
 )
 
 var sessionAffinityAnnotations = parser.Annotation{
 	Group: "affinity",
 	Annotations: parser.AnnotationFields{
 		annotationAffinityType: {
-			Validator:     parser.ValidateOptions([]string{"cookie"}, true, true),
+			Validator:     parser.ValidateOptions([]string{cookieAffinity}, true, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `This annotation enables and sets the affinity type in all Upstreams of an Ingress. This way, a request will always be directed to the same upstream server. The only affinity type available for NGINX is cookie`,
@@ -91,7 +93,7 @@ var sessionAffinityAnnotations = parser.Annotation{
 			Setting this to legacy will restore original canary behavior, when session affinity was ignored.`,
 		},
 		annotationAffinityCookieName: {
-			Validator:     parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator:     parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation allows to specify the name of the cookie that will be used to route the requests`,
@@ -103,25 +105,25 @@ var sessionAffinityAnnotations = parser.Annotation{
 			Documentation: `This annotation set the cookie as secure regardless the protocol of the incoming request`,
 		},
 		annotationAffinityCookieExpires: {
-			Validator:     parser.ValidateRegex(*affinityCookieExpiresRegex, true),
+			Validator:     parser.ValidateRegex(affinityCookieExpiresRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation is a legacy version of "session-cookie-max-age" for compatibility with older browsers, generates an "Expires" cookie directive by adding the seconds to the current date`,
 		},
 		annotationAffinityCookieMaxAge: {
-			Validator:     parser.ValidateRegex(*affinityCookieExpiresRegex, false),
+			Validator:     parser.ValidateRegex(affinityCookieExpiresRegex, false),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation sets the time until the cookie expires`,
 		},
 		annotationAffinityCookiePath: {
-			Validator:     parser.ValidateRegex(*parser.URLIsValidRegex, true),
+			Validator:     parser.ValidateRegex(parser.URLIsValidRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines the Path that will be set on the cookie (required if your Ingress paths use regular expressions)`,
 		},
 		annotationAffinityCookieDomain: {
-			Validator:     parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator:     parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskMedium,
 			Documentation: `This annotation defines the Domain attribute of the sticky cookie.`,
@@ -149,9 +151,7 @@ var sessionAffinityAnnotations = parser.Annotation{
 	},
 }
 
-var (
-	affinityCookieExpiresRegex = regexp.MustCompile(`(^0|-?[1-9]\d*$)`)
-)
+var affinityCookieExpiresRegex = regexp.MustCompile(`(^0|-?[1-9]\d*$)`)
 
 // Config describes the per ingress session affinity config
 type Config struct {
@@ -186,6 +186,11 @@ type Cookie struct {
 	ConditionalSameSiteNone bool `json:"conditional-samesite-none"`
 }
 
+type affinity struct {
+	r                resolver.Resolver
+	annotationConfig parser.Annotation
+}
+
 // cookieAffinityParse gets the annotation values related to Cookie Affinity
 // It also sets default values when no value or incorrect value is found
 func (a affinity) cookieAffinityParse(ing *networking.Ingress) *Cookie {
@@ -252,11 +257,6 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 	}
 }
 
-type affinity struct {
-	r                resolver.Resolver
-	annotationConfig parser.Annotation
-}
-
 // ParseAnnotations parses the annotations contained in the ingress
 // rule used to configure the affinity directives
 func (a affinity) Parse(ing *networking.Ingress) (interface{}, error) {
@@ -279,11 +279,10 @@ func (a affinity) Parse(ing *networking.Ingress) (interface{}, error) {
 	}
 
 	switch at {
-	case "cookie":
+	case cookieAffinity:
 		cookie = a.cookieAffinityParse(ing)
 	default:
 		klog.V(3).InfoS("No default affinity found", "ingress", ing.Name)
-
 	}
 
 	return &Config{

internal/ingress/annotations/sessionaffinity/main_test.go

@@ -83,7 +83,11 @@ func TestIngressAffinityCookieConfig(t *testing.T) {
 	data[parser.GetAnnotationWithPrefix(annotationAffinityCookieSecure)] = "true"
 	ing.SetAnnotations(data)
 
-	affin, _ := NewParser(&resolver.Mock{}).Parse(ing)
+	affin, err := NewParser(&resolver.Mock{}).Parse(ing)
+	if err != nil {
+		t.Errorf("unexpected error parsing annotations: %v", err)
+	}
+
 	nginxAffinity, ok := affin.(*Config)
 	if !ok {
 		t.Errorf("expected a Config type")

internal/ingress/annotations/snippet/main_test.go

@@ -54,6 +54,7 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
+		//nolint:errcheck // Ignore the error since invalid cases will be checked with expected results
 		result, _ := ap.Parse(ing)
 		if result != testCase.expected {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)

internal/ingress/annotations/sslcipher/main.go

@@ -31,10 +31,8 @@ const (
 	sslCipherAnnotation             = "ssl-ciphers"
 )
 
-var (
-	// Should cover something like "ALL:!aNULL:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP"
-	regexValidSSLCipher = regexp.MustCompile(`^[A-Za-z0-9!:+\-]*$`)
-)
+// Should cover something like "ALL:!aNULL:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP"
+var regexValidSSLCipher = regexp.MustCompile(`^[A-Za-z0-9!:+\-]*$`)
 
 var sslCipherAnnotations = parser.Annotation{
 	Group: "backend",
@@ -47,7 +45,7 @@ var sslCipherAnnotations = parser.Annotation{
 			This configuration specifies that server ciphers should be preferred over client ciphers when using the SSLv3 and TLS protocols.`,
 		},
 		sslCipherAnnotation: {
-			Validator:     parser.ValidateRegex(*regexValidSSLCipher, true),
+			Validator:     parser.ValidateRegex(regexValidSSLCipher, true),
 			Scope:         parser.AnnotationScopeIngress,
 			Risk:          parser.AnnotationRiskLow,
 			Documentation: `Using this annotation will set the ssl_ciphers directive at the server level. This configuration is active for all the paths in the host.`,
@@ -104,7 +102,7 @@ func (sc sslCipher) GetDocumentation() parser.AnnotationFields {
 	return sc.annotationConfig.Annotations
 }
 
-func (a sslCipher) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (sc sslCipher) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(sc.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, sslCipherAnnotations.Annotations)
 }

internal/ingress/annotations/sslcipher/main_test.go

@@ -42,8 +42,11 @@ func TestParse(t *testing.T) {
 		expectErr   bool
 	}{
 		{map[string]string{annotationSSLCiphers: "ALL:!aNULL:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP"}, Config{"ALL:!aNULL:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP", ""}, false},
-		{map[string]string{annotationSSLCiphers: "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256"},
-			Config{"ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256", ""}, false},
+		{
+			map[string]string{annotationSSLCiphers: "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256"},
+			Config{"ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256", ""},
+			false,
+		},
 		{map[string]string{annotationSSLCiphers: ""}, Config{"", ""}, false},
 		{map[string]string{annotationSSLPreferServerCiphers: "true"}, Config{"", "on"}, false},
 		{map[string]string{annotationSSLPreferServerCiphers: "false"}, Config{"", "off"}, false},

internal/ingress/annotations/sslpassthrough/main.go

@@ -47,7 +47,8 @@ type sslpt struct {
 
 // NewParser creates a new SSL passthrough annotation parser
 func NewParser(r resolver.Resolver) parser.IngressAnnotation {
-	return sslpt{r: r,
+	return sslpt{
+		r:                r,
 		annotationConfig: sslPassthroughAnnotations,
 	}
 }

internal/ingress/annotations/streamsnippet/main_test.go

@@ -38,7 +38,8 @@ func TestParse(t *testing.T) {
 		annotations map[string]string
 		expected    string
 	}{
-		{map[string]string{annotation: "server { listen: 8000; proxy_pass 127.0.0.1:80}"},
+		{
+			map[string]string{annotation: "server { listen: 8000; proxy_pass 127.0.0.1:80}"},
 			"server { listen: 8000; proxy_pass 127.0.0.1:80}",
 		},
 		{map[string]string{annotation: "false"}, "false"},
@@ -56,6 +57,7 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
+		//nolint:errcheck // Ignore the error since invalid cases will be checked with expected results
 		result, _ := ap.Parse(ing)
 		if result != testCase.expected {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)

internal/ingress/annotations/upstreamhashby/main.go

@@ -41,7 +41,7 @@ var upstreamHashByAnnotations = parser.Annotation{
 	Group: "backend",
 	Annotations: parser.AnnotationFields{
 		upstreamHashByAnnotation: {
-			Validator: parser.ValidateRegex(*hashByRegex, true),
+			Validator: parser.ValidateRegex(hashByRegex, true),
 			Scope:     parser.AnnotationScopeLocation,
 			Risk:      parser.AnnotationRiskHigh, // High, this annotation allows accessing NGINX variables
 			Documentation: `This annotation defines the nginx variable, text value or any combination thereof to use for consistent hashing. 

internal/ingress/annotations/xforwardedprefix/main.go

@@ -31,7 +31,7 @@ var xForwardedForAnnotations = parser.Annotation{
 	Group: "backend",
 	Annotations: parser.AnnotationFields{
 		xForwardedForPrefixAnnotation: {
-			Validator:     parser.ValidateRegex(*parser.BasicCharsRegex, true),
+			Validator:     parser.ValidateRegex(parser.BasicCharsRegex, true),
 			Scope:         parser.AnnotationScopeLocation,
 			Risk:          parser.AnnotationRiskLow, // Low, as it allows regexes but on a very limited set
 			Documentation: `This annotation can be used to add the non-standard X-Forwarded-Prefix header to the upstream request with a string value`,
@@ -54,15 +54,15 @@ func NewParser(r resolver.Resolver) parser.IngressAnnotation {
 
 // Parse parses the annotations contained in the ingress rule
 // used to add an x-forwarded-prefix header to the request
-func (cbbs xforwardedprefix) Parse(ing *networking.Ingress) (interface{}, error) {
-	return parser.GetStringAnnotation(xForwardedForPrefixAnnotation, ing, cbbs.annotationConfig.Annotations)
+func (x xforwardedprefix) Parse(ing *networking.Ingress) (interface{}, error) {
+	return parser.GetStringAnnotation(xForwardedForPrefixAnnotation, ing, x.annotationConfig.Annotations)
 }
 
-func (cbbs xforwardedprefix) GetDocumentation() parser.AnnotationFields {
-	return cbbs.annotationConfig.Annotations
+func (x xforwardedprefix) GetDocumentation() parser.AnnotationFields {
+	return x.annotationConfig.Annotations
 }
 
-func (a xforwardedprefix) Validate(anns map[string]string) error {
-	maxrisk := parser.StringRiskToRisk(a.r.GetSecurityConfiguration().AnnotationsRiskLevel)
+func (x xforwardedprefix) Validate(anns map[string]string) error {
+	maxrisk := parser.StringRiskToRisk(x.r.GetSecurityConfiguration().AnnotationsRiskLevel)
 	return parser.CheckAnnotationRisk(anns, maxrisk, xForwardedForAnnotations.Annotations)
 }

internal/ingress/annotations/xforwardedprefix/main_test.go

@@ -54,6 +54,7 @@ func TestParse(t *testing.T) {
 
 	for _, testCase := range testCases {
 		ing.SetAnnotations(testCase.annotations)
+		//nolint:errcheck // Ignore the error since invalid cases will be checked with expected results
 		result, _ := ap.Parse(ing)
 		if result != testCase.expected {
 			t.Errorf("expected %v but returned %v, annotations: %s", testCase.expected, result, testCase.annotations)

internal/ingress/controller/certificate.go

@@ -100,7 +100,7 @@ func matchHostnames(pattern, host string) bool {
 	host = strings.TrimSuffix(host, ".")
 	pattern = strings.TrimSuffix(pattern, ".")
 
-	if len(pattern) == 0 || len(host) == 0 {
+	if pattern == "" || host == "" {
 		return false
 	}
 

internal/ingress/controller/checker.go

@@ -29,7 +29,7 @@ import (
 )
 
 // Name returns the healthcheck name
-func (n NGINXController) Name() string {
+func (n *NGINXController) Name() string {
 	return "nginx-ingress-controller"
 }
 

internal/ingress/controller/checker_test.go

@@ -32,7 +32,7 @@ import (
 )
 
 func TestNginxCheck(t *testing.T) {
-	var tests = []struct {
+	tests := []struct {
 		healthzPath string
 	}{
 		{"/healthz"},
@@ -42,7 +42,6 @@ func TestNginxCheck(t *testing.T) {
 	for _, tt := range tests {
 		testName := fmt.Sprintf("health path: %s", tt.healthzPath)
 		t.Run(testName, func(t *testing.T) {
-
 			mux := http.NewServeMux()
 
 			listener, err := tryListen("tcp", fmt.Sprintf(":%v", nginx.StatusPort))
@@ -50,7 +49,7 @@ func TestNginxCheck(t *testing.T) {
 				t.Fatalf("creating tcp listener: %s", err)
 			}
 			defer listener.Close()
-
+			//nolint:gosec // Ignore not configured ReadHeaderTimeout in testing
 			server := &httptest.Server{
 				Listener: listener,
 				Config: &http.Server{
@@ -103,10 +102,10 @@ func TestNginxCheck(t *testing.T) {
 				}
 			}()
 			go func() {
-				cmd.Wait() //nolint:errcheck
+				cmd.Wait() //nolint:errcheck // Ignore the error
 			}()
 
-			if _, err := pidFile.Write([]byte(fmt.Sprintf("%v", pid))); err != nil {
+			if _, err := fmt.Fprintf(pidFile, "%v", pid); err != nil {
 				t.Errorf("unexpected error writing the pid file: %v", err)
 			}
 
@@ -121,7 +120,7 @@ func TestNginxCheck(t *testing.T) {
 			})
 
 			// pollute pid file
-			pidFile.Write([]byte("999999")) //nolint:errcheck
+			pidFile.WriteString("999999") //nolint:errcheck // Ignore the error
 			pidFile.Close()
 
 			t.Run("bad pid", func(t *testing.T) {
@@ -134,7 +133,7 @@ func TestNginxCheck(t *testing.T) {
 }
 
 func callHealthz(expErr bool, healthzPath string, mux *http.ServeMux) error {
-	req, err := http.NewRequest(http.MethodGet, healthzPath, nil)
+	req, err := http.NewRequest(http.MethodGet, healthzPath, http.NoBody)
 	if err != nil {
 		return fmt.Errorf("healthz error: %v", err)
 	}

internal/ingress/controller/config/config.go

@@ -29,10 +29,8 @@ import (
 	"k8s.io/ingress-nginx/pkg/util/runtime"
 )
 
-var (
-	// EnableSSLChainCompletion Autocomplete SSL certificate chains with missing intermediate CA certificates.
-	EnableSSLChainCompletion = false
-)
+// EnableSSLChainCompletion Autocomplete SSL certificate chains with missing intermediate CA certificates.
+var EnableSSLChainCompletion = false
 
 const (
 	// http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size
@@ -91,7 +89,7 @@ const (
 
 // Configuration represents the content of nginx.conf file
 type Configuration struct {
-	defaults.Backend `json:",squash"` //nolint:staticcheck
+	defaults.Backend `json:",squash"` //nolint:staticcheck // Ignore unknown JSON option "squash" error
 
 	// AllowSnippetAnnotations enable users to add their own snippets via ingress annotation.
 	// If disabled, only snippets added via ConfigMap are added to ingress.
@@ -141,9 +139,9 @@ type Configuration struct {
 	// By default access logs go to /var/log/nginx/access.log
 	AccessLogPath string `json:"access-log-path,omitempty"`
 
-	// HttpAccessLogPath sets the path of the access logs for http context globally if enabled
+	// HTTPAccessLogPath sets the path of the access logs for http context globally if enabled
 	// http://nginx.org/en/docs/http/ngx_http_log_module.html#access_log
-	HttpAccessLogPath string `json:"http-access-log-path,omitempty"`
+	HTTPAccessLogPath string `json:"http-access-log-path,omitempty"`
 
 	// StreamAccessLogPath sets the path of the access logs for stream context globally if enabled
 	// http://nginx.org/en/docs/stream/ngx_stream_log_module.html#access_log
@@ -230,19 +228,19 @@ type Configuration struct {
 
 	// https://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_max_field_size
 	// HTTP2MaxFieldSize Limits the maximum size of an HPACK-compressed request header field
-	// NOTE: Deprecated
+	// Deprecated: HTTP2MaxFieldSize is deprecated.
 	HTTP2MaxFieldSize string `json:"http2-max-field-size,omitempty"`
 
 	// https://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_max_header_size
 	// HTTP2MaxHeaderSize Limits the maximum size of the entire request header list after HPACK decompression
-	// NOTE: Deprecated
+	// Deprecated: HTTP2MaxHeaderSize is deprecated.
 	HTTP2MaxHeaderSize string `json:"http2-max-header-size,omitempty"`
 
 	// http://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_max_requests
 	// HTTP2MaxRequests Sets the maximum number of requests (including push requests) that can be served
 	// through one HTTP/2 connection, after which the next client request will lead to connection closing
 	// and the need of establishing a new connection.
-	// NOTE: Deprecated
+	// Deprecated: HTTP2MaxRequests is deprecated.
 	HTTP2MaxRequests int `json:"http2-max-requests,omitempty"`
 
 	// http://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_max_concurrent_streams
@@ -552,7 +550,7 @@ type Configuration struct {
 	UseForwardedHeaders bool `json:"use-forwarded-headers"`
 
 	// Sets whether to enable the real ip module
-	EnableRealIp bool `json:"enable-real-ip"`
+	EnableRealIP bool `json:"enable-real-ip"`
 
 	// Sets the header field for identifying the originating IP address of a client
 	// Default is X-Forwarded-For
@@ -621,7 +619,7 @@ type Configuration struct {
 	// Default: 0.01
 	OtelSamplerRatio float32 `json:"otel-sampler-ratio"`
 
-	//OtelSamplerParentBased specifies the parent based sampler to be use for any traces created
+	// OtelSamplerParentBased specifies the parent based sampler to be use for any traces created
 	// Default: true
 	OtelSamplerParentBased bool `json:"otel-sampler-parent-based"`
 
@@ -891,7 +889,7 @@ func NewDefault() Configuration {
 		EnableUnderscoresInHeaders:       false,
 		ErrorLogLevel:                    errorLevel,
 		UseForwardedHeaders:              false,
-		EnableRealIp:                     false,
+		EnableRealIP:                     false,
 		ForwardedForHeader:               "X-Forwarded-For",
 		ComputeFullForwardedFor:          false,
 		ProxyAddOriginalURIHeader:        false,
@@ -1039,41 +1037,41 @@ func NewDefault() Configuration {
 
 // TemplateConfig contains the nginx configuration to render the file nginx.conf
 type TemplateConfig struct {
-	ProxySetHeaders          map[string]string
-	AddHeaders               map[string]string
-	BacklogSize              int
-	Backends                 []*ingress.Backend
-	PassthroughBackends      []*ingress.SSLPassthroughBackend
-	Servers                  []*ingress.Server
-	TCPBackends              []ingress.L4Service
-	UDPBackends              []ingress.L4Service
-	HealthzURI               string
-	Cfg                      Configuration
-	IsIPV6Enabled            bool
-	IsSSLPassthroughEnabled  bool
-	NginxStatusIpv4Whitelist []string
-	NginxStatusIpv6Whitelist []string
-	RedirectServers          interface{}
-	ListenPorts              *ListenPorts
-	PublishService           *apiv1.Service
-	EnableMetrics            bool
-	MaxmindEditionFiles      *[]string
-	MonitorMaxBatchSize      int
-	PID                      string
-	StatusPath               string
-	StatusPort               int
-	StreamPort               int
-	StreamSnippets           []string
+	ProxySetHeaders          map[string]string                `json:"ProxySetHeaders"`
+	AddHeaders               map[string]string                `json:"AddHeaders"`
+	BacklogSize              int                              `json:"BacklogSize"`
+	Backends                 []*ingress.Backend               `json:"Backends"`
+	PassthroughBackends      []*ingress.SSLPassthroughBackend `json:"PassthroughBackends"`
+	Servers                  []*ingress.Server                `json:"Servers"`
+	TCPBackends              []ingress.L4Service              `json:"TCPBackends"`
+	UDPBackends              []ingress.L4Service              `json:"UDPBackends"`
+	HealthzURI               string                           `json:"HealthzURI"`
+	Cfg                      Configuration                    `json:"Cfg"`
+	IsIPV6Enabled            bool                             `json:"IsIPV6Enabled"`
+	IsSSLPassthroughEnabled  bool                             `json:"IsSSLPassthroughEnabled"`
+	NginxStatusIpv4Whitelist []string                         `json:"NginxStatusIpv4Whitelist"`
+	NginxStatusIpv6Whitelist []string                         `json:"NginxStatusIpv6Whitelist"`
+	RedirectServers          interface{}                      `json:"RedirectServers"`
+	ListenPorts              *ListenPorts                     `json:"ListenPorts"`
+	PublishService           *apiv1.Service                   `json:"PublishService"`
+	EnableMetrics            bool                             `json:"EnableMetrics"`
+	MaxmindEditionFiles      *[]string                        `json:"MaxmindEditionFiles"`
+	MonitorMaxBatchSize      int                              `json:"MonitorMaxBatchSize"`
+	PID                      string                           `json:"PID"`
+	StatusPath               string                           `json:"StatusPath"`
+	StatusPort               int                              `json:"StatusPort"`
+	StreamPort               int                              `json:"StreamPort"`
+	StreamSnippets           []string                         `json:"StreamSnippets"`
 }
 
 // ListenPorts describe the ports required to run the
 // NGINX Ingress controller
 type ListenPorts struct {
-	HTTP     int
-	HTTPS    int
-	Health   int
-	Default  int
-	SSLProxy int
+	HTTP     int `json:"HTTP"`
+	HTTPS    int `json:"HTTPS"`
+	Health   int `json:"Health"`
+	Default  int `json:"Default"`
+	SSLProxy int `json:"SSLProxy"`
 }
 
 // GlobalExternalAuth describe external authentication configuration for the

internal/ingress/controller/controller.go

@@ -114,7 +114,7 @@ type Configuration struct {
 
 	DisableCatchAll bool
 
-	IngressClassConfiguration *ingressclass.IngressClassConfiguration
+	IngressClassConfiguration *ingressclass.Configuration
 
 	ValidationWebhook         string
 	ValidationWebhookCertPath string
@@ -143,7 +143,7 @@ type Configuration struct {
 func getIngressPodZone(svc *apiv1.Service) string {
 	svcKey := k8s.MetaNamespaceKey(svc)
 	if svcZoneAnnotation, ok := svc.ObjectMeta.GetAnnotations()[apiv1.AnnotationTopologyMode]; ok {
-		if strings.ToLower(svcZoneAnnotation) == "auto" {
+		if strings.EqualFold(svcZoneAnnotation, "auto") {
 			if foundZone, ok := k8s.IngressNodeDetails.GetLabels()[apiv1.LabelTopologyZone]; ok {
 				klog.V(3).Infof("Svc has topology aware annotation enabled, try to use zone %q where controller pod is running for Service %q ", foundZone, svcKey)
 				return foundZone
@@ -154,7 +154,7 @@ func getIngressPodZone(svc *apiv1.Service) string {
 }
 
 // GetPublishService returns the Service used to set the load-balancer status of Ingresses.
-func (n NGINXController) GetPublishService() *apiv1.Service {
+func (n *NGINXController) GetPublishService() *apiv1.Service {
 	s, err := n.store.GetService(n.cfg.PublishService)
 	if err != nil {
 		return nil
@@ -189,13 +189,16 @@ func (n *NGINXController) syncIngress(interface{}) error {
 	if !utilingress.IsDynamicConfigurationEnough(pcfg, n.runningConfig) {
 		klog.InfoS("Configuration changes detected, backend reload required")
 
-		hash, _ := hashstructure.Hash(pcfg, hashstructure.FormatV1, &hashstructure.HashOptions{
+		hash, err := hashstructure.Hash(pcfg, hashstructure.FormatV1, &hashstructure.HashOptions{
 			TagName: "json",
 		})
+		if err != nil {
+			klog.Errorf("unexpected error hashing configuration: %v", err)
+		}
 
 		pcfg.ConfigurationChecksum = fmt.Sprintf("%v", hash)
 
-		err := n.OnUpdate(*pcfg)
+		err = n.OnUpdate(*pcfg)
 		if err != nil {
 			n.metricCollector.IncReloadErrorCount()
 			n.metricCollector.ConfigSuccess(hash, false)
@@ -263,7 +266,7 @@ func (n *NGINXController) syncIngress(interface{}) error {
 func (n *NGINXController) CheckWarning(ing *networking.Ingress) ([]string, error) {
 	warnings := make([]string, 0)
 
-	var deprecatedAnnotations = sets.NewString()
+	deprecatedAnnotations := sets.NewString()
 	deprecatedAnnotations.Insert(
 		"enable-influxdb",
 		"influxdb-measurement",
@@ -335,7 +338,7 @@ func (n *NGINXController) CheckIngress(ing *networking.Ingress) error {
 	}
 
 	if n.cfg.DisableCatchAll && ing.Spec.DefaultBackend != nil {
-		return fmt.Errorf("This deployment is trying to create a catch-all ingress while DisableCatchAll flag is set to true. Remove '.spec.defaultBackend' or set DisableCatchAll flag to false.")
+		return fmt.Errorf("this deployment is trying to create a catch-all ingress while DisableCatchAll flag is set to true. Remove '.spec.defaultBackend' or set DisableCatchAll flag to false")
 	}
 	startRender := time.Now().UnixNano() / 1000000
 	cfg := n.store.GetBackendConfiguration()
@@ -355,10 +358,9 @@ func (n *NGINXController) CheckIngress(ing *networking.Ingress) error {
 	}
 
 	for key, value := range ing.ObjectMeta.GetAnnotations() {
-
 		if parser.AnnotationsPrefix != parser.DefaultAnnotationsPrefix {
 			if strings.HasPrefix(key, fmt.Sprintf("%s/", parser.DefaultAnnotationsPrefix)) {
-				return fmt.Errorf("This deployment has a custom annotation prefix defined. Use '%s' instead of '%s'", parser.AnnotationsPrefix, parser.DefaultAnnotationsPrefix)
+				return fmt.Errorf("this deployment has a custom annotation prefix defined. Use '%s' instead of '%s'", parser.AnnotationsPrefix, parser.DefaultAnnotationsPrefix)
 			}
 		}
 
@@ -374,10 +376,9 @@ func (n *NGINXController) CheckIngress(ing *networking.Ingress) error {
 			return fmt.Errorf("%s annotation cannot be used. Snippet directives are disabled by the Ingress administrator", key)
 		}
 
-		if len(cfg.GlobalRateLimitMemcachedHost) == 0 && strings.HasPrefix(key, fmt.Sprintf("%s/%s", parser.AnnotationsPrefix, "global-rate-limit")) {
+		if cfg.GlobalRateLimitMemcachedHost == "" && strings.HasPrefix(key, fmt.Sprintf("%s/%s", parser.AnnotationsPrefix, "global-rate-limit")) {
 			return fmt.Errorf("'global-rate-limit*' annotations require 'global-rate-limit-memcached-host' settings configured in the global configmap")
 		}
-
 	}
 
 	k8s.SetDefaultNGINXPathType(ing)
@@ -401,7 +402,7 @@ func (n *NGINXController) CheckIngress(ing *networking.Ingress) error {
 	startTest := time.Now().UnixNano() / 1000000
 	_, servers, pcfg := n.getConfiguration(ings)
 
-	err = checkOverlap(ing, allIngresses, servers)
+	err = checkOverlap(ing, servers)
 	if err != nil {
 		n.metricCollector.IncCheckErrorCount(ing.ObjectMeta.Namespace, ing.Name)
 		return err
@@ -452,7 +453,7 @@ func (n *NGINXController) getStreamServices(configmapName string, proto apiv1.Pr
 		return []ingress.L4Service{}
 	}
 
-	var svcs []ingress.L4Service
+	svcs := make([]ingress.L4Service, 0, len(configmap.Data))
 	var svcProxyProtocol ingress.ProxyProtocol
 
 	rp := []int{
@@ -489,10 +490,10 @@ func (n *NGINXController) getStreamServices(configmapName string, proto apiv1.Pr
 		svcProxyProtocol.Encode = false
 		// Proxy Protocol is only compatible with TCP Services
 		if len(nsSvcPort) >= 3 && proto == apiv1.ProtocolTCP {
-			if len(nsSvcPort) >= 3 && strings.ToUpper(nsSvcPort[2]) == "PROXY" {
+			if len(nsSvcPort) >= 3 && strings.EqualFold(nsSvcPort[2], "PROXY") {
 				svcProxyProtocol.Decode = true
 			}
-			if len(nsSvcPort) == 4 && strings.ToUpper(nsSvcPort[3]) == "PROXY" {
+			if len(nsSvcPort) == 4 && strings.EqualFold(nsSvcPort[3], "PROXY") {
 				svcProxyProtocol.Encode = true
 			}
 		}
@@ -532,6 +533,7 @@ func (n *NGINXController) getStreamServices(configmapName string, proto apiv1.Pr
 			klog.V(3).Infof("Searching Endpoints with %v port number %d for Service %q", proto, targetPort, nsName)
 			for i := range svc.Spec.Ports {
 				sp := svc.Spec.Ports[i]
+				//nolint:gosec // Ignore G109 error
 				if sp.Port == int32(targetPort) {
 					if sp.Protocol == proto {
 						endps = getEndpointsFromSlices(svc, &sp, proto, zone, n.store.GetServiceEndpointsSlices)
@@ -574,7 +576,7 @@ func (n *NGINXController) getDefaultUpstream() *ingress.Backend {
 	}
 	svcKey := n.cfg.DefaultService
 
-	if len(svcKey) == 0 {
+	if svcKey == "" {
 		upstream.Endpoints = append(upstream.Endpoints, n.DefaultEndpoint())
 		return upstream
 	}
@@ -690,13 +692,14 @@ func dropSnippetDirectives(anns *annotations.Ingress, ingKey string) {
 			klog.V(3).Infof("Ingress %q tried to use stream-snippet and the annotation is disabled by the admin. Removing the annotation", ingKey)
 			anns.StreamSnippet = ""
 		}
-
 	}
 }
 
 // getBackendServers returns a list of Upstream and Server to be used by the
 // backend.  An upstream can be used in multiple servers if the namespace,
 // service name and port are the same.
+//
+//nolint:gocyclo // Ignore function complexity error
 func (n *NGINXController) getBackendServers(ingresses []*ingress.Ingress) ([]*ingress.Backend, []*ingress.Server) {
 	du := n.getDefaultUpstream()
 	upstreams := n.createUpstreams(ingresses, du)
@@ -1030,7 +1033,7 @@ func (n *NGINXController) createUpstreams(data []*ingress.Ingress, du *ingress.B
 			// configure traffic shaping for canary
 			if anns.Canary.Enabled {
 				upstreams[defBackend].NoServer = true
-				upstreams[defBackend].TrafficShapingPolicy = newTrafficShapingPolicy(anns.Canary)
+				upstreams[defBackend].TrafficShapingPolicy = newTrafficShapingPolicy(&anns.Canary)
 			}
 
 			if len(upstreams[defBackend].Endpoints) == 0 {
@@ -1095,7 +1098,7 @@ func (n *NGINXController) createUpstreams(data []*ingress.Ingress, du *ingress.B
 				// configure traffic shaping for canary
 				if anns.Canary.Enabled {
 					upstreams[name].NoServer = true
-					upstreams[name].TrafficShapingPolicy = newTrafficShapingPolicy(anns.Canary)
+					upstreams[name].TrafficShapingPolicy = newTrafficShapingPolicy(&anns.Canary)
 				}
 
 				if len(upstreams[name].Endpoints) == 0 {
@@ -1206,7 +1209,6 @@ func (n *NGINXController) serviceEndpoints(svcKey, backendPort string) ([]ingres
 		if strconv.Itoa(int(servicePort.Port)) == backendPort ||
 			servicePort.TargetPort.String() == backendPort ||
 			servicePort.Name == backendPort {
-
 			endps := getEndpointsFromSlices(svc, &servicePort, apiv1.ProtocolTCP, zone, n.store.GetServiceEndpointsSlices)
 			if len(endps) == 0 {
 				klog.Warningf("Service %q does not have any active Endpoint.", svcKey)
@@ -1239,8 +1241,8 @@ func (n *NGINXController) getDefaultSSLCertificate() *ingress.SSLCert {
 // one root location, which uses a default backend if left unspecified.
 func (n *NGINXController) createServers(data []*ingress.Ingress,
 	upstreams map[string]*ingress.Backend,
-	du *ingress.Backend) map[string]*ingress.Server {
-
+	du *ingress.Backend,
+) map[string]*ingress.Server {
 	servers := make(map[string]*ingress.Server, len(data))
 	allAliases := make(map[string][]string, len(data))
 
@@ -1282,7 +1284,8 @@ func (n *NGINXController) createServers(data []*ingress.Ingress,
 					Rewrite: false,
 				},
 			},
-		}}
+		},
+	}
 
 	// initialize all other servers
 	for _, ing := range data {
@@ -1532,7 +1535,7 @@ func locationApplyAnnotations(loc *ingress.Location, anns *annotations.Ingress)
 }
 
 // OK to merge canary ingresses iff there exists one or more ingresses to potentially merge into
-func nonCanaryIngressExists(ingresses []*ingress.Ingress, canaryIngresses []*ingress.Ingress) bool {
+func nonCanaryIngressExists(ingresses, canaryIngresses []*ingress.Ingress) bool {
 	return len(ingresses)-len(canaryIngresses) > 0
 }
 
@@ -1540,12 +1543,12 @@ func nonCanaryIngressExists(ingresses []*ingress.Ingress, canaryIngresses []*ing
 // 1) names of backends do not match and canary doesn't merge into itself
 // 2) primary name is not the default upstream
 // 3) the primary has a server
-func canMergeBackend(primary *ingress.Backend, alternative *ingress.Backend) bool {
+func canMergeBackend(primary, alternative *ingress.Backend) bool {
 	return alternative != nil && primary.Name != alternative.Name && primary.Name != defUpstreamName && !primary.NoServer
 }
 
 // Performs the merge action and checks to ensure that one two alternative backends do not merge into each other
-func mergeAlternativeBackend(ing *ingress.Ingress, priUps *ingress.Backend, altUps *ingress.Backend) bool {
+func mergeAlternativeBackend(ing *ingress.Ingress, priUps, altUps *ingress.Backend) bool {
 	if priUps.NoServer {
 		klog.Warningf("unable to merge alternative backend %v into primary backend %v because %v is a primary backend",
 			altUps.Name, priUps.Name, priUps.Name)
@@ -1563,8 +1566,7 @@ func mergeAlternativeBackend(ing *ingress.Ingress, priUps *ingress.Backend, altU
 		priUps.SessionAffinity.DeepCopyInto(&altUps.SessionAffinity)
 	}
 
-	priUps.AlternativeBackends =
-		append(priUps.AlternativeBackends, altUps.Name)
+	priUps.AlternativeBackends = append(priUps.AlternativeBackends, altUps.Name)
 
 	return true
 }
@@ -1574,8 +1576,8 @@ func mergeAlternativeBackend(ing *ingress.Ingress, priUps *ingress.Backend, altU
 // to a backend's alternative list.
 // If no match is found, then the serverless backend is deleted.
 func mergeAlternativeBackends(ing *ingress.Ingress, upstreams map[string]*ingress.Backend,
-	servers map[string]*ingress.Server) {
-
+	servers map[string]*ingress.Server,
+) {
 	// merge catch-all alternative backends
 	if ing.Spec.DefaultBackend != nil {
 		upsName := upstreamName(ing.Namespace, ing.Spec.DefaultBackend.Service)
@@ -1585,7 +1587,6 @@ func mergeAlternativeBackends(ing *ingress.Ingress, upstreams map[string]*ingres
 		if altUps == nil {
 			klog.Warningf("alternative backend %s has already been removed", upsName)
 		} else {
-
 			merged := false
 			altEqualsPri := false
 
@@ -1676,8 +1677,8 @@ func mergeAlternativeBackends(ing *ingress.Ingress, upstreams map[string]*ingres
 // extractTLSSecretName returns the name of the Secret containing a SSL
 // certificate for the given host name, or an empty string.
 func extractTLSSecretName(host string, ing *ingress.Ingress,
-	getLocalSSLCert func(string) (*ingress.SSLCert, error)) string {
-
+	getLocalSSLCert func(string) (*ingress.SSLCert, error),
+) string {
 	if ing == nil {
 		return ""
 	}
@@ -1694,7 +1695,6 @@ func extractTLSSecretName(host string, ing *ingress.Ingress,
 
 	// no TLS host matching host name, try each TLS host for matching SAN or CN
 	for _, tls := range ing.Spec.TLS {
-
 		if tls.SecretName == "" {
 			// There's no secretName specified, so it will never be available
 			continue
@@ -1753,6 +1753,7 @@ func externalNamePorts(name string, svc *apiv1.Service) *apiv1.ServicePort {
 	}
 
 	for _, svcPort := range svc.Spec.Ports {
+		//nolint:gosec // Ignore G109 error
 		if svcPort.Port != int32(port) {
 			continue
 		}
@@ -1772,12 +1773,13 @@ func externalNamePorts(name string, svc *apiv1.Service) *apiv1.ServicePort {
 	// ExternalName without port
 	return &apiv1.ServicePort{
 		Protocol: "TCP",
+		//nolint:gosec // Ignore G109 error
 		Port:       int32(port),
 		TargetPort: intstr.FromInt(port),
 	}
 }
 
-func checkOverlap(ing *networking.Ingress, ingresses []*ingress.Ingress, servers []*ingress.Server) error {
+func checkOverlap(ing *networking.Ingress, servers []*ingress.Server) error {
 	for _, rule := range ing.Spec.Rules {
 		if rule.HTTP == nil {
 			continue
@@ -1870,7 +1872,7 @@ func (n *NGINXController) getStreamSnippets(ingresses []*ingress.Ingress) []stri
 }
 
 // newTrafficShapingPolicy creates new ingress.TrafficShapingPolicy instance using canary configuration
-func newTrafficShapingPolicy(cfg canary.Config) ingress.TrafficShapingPolicy {
+func newTrafficShapingPolicy(cfg *canary.Config) ingress.TrafficShapingPolicy {
 	return ingress.TrafficShapingPolicy{
 		Weight:        cfg.Weight,
 		WeightTotal:   cfg.WeightTotal,

internal/ingress/controller/controller_test.go

@@ -60,51 +60,56 @@ import (
 	"k8s.io/ingress-nginx/pkg/util/file"
 )
 
+const (
+	exampleBackend = "example-http-svc-1-80"
+	TRUE           = "true"
+)
+
 type fakeIngressStore struct {
 	ingresses     []*ingress.Ingress
 	configuration ngx_config.Configuration
 }
 
-func (fakeIngressStore) GetIngressClass(ing *networking.Ingress, icConfig *ingressclass.IngressClassConfiguration) (string, error) {
+func (fakeIngressStore) GetIngressClass(_ *networking.Ingress, _ *ingressclass.Configuration) (string, error) {
 	return "nginx", nil
 }
 
-func (fis fakeIngressStore) GetBackendConfiguration() ngx_config.Configuration {
+func (fis *fakeIngressStore) GetBackendConfiguration() ngx_config.Configuration {
 	return fis.configuration
 }
 
-func (fis fakeIngressStore) GetSecurityConfiguration() defaults.SecurityConfiguration {
+func (fis *fakeIngressStore) GetSecurityConfiguration() defaults.SecurityConfiguration {
 	return defaults.SecurityConfiguration{
 		AnnotationsRiskLevel:         fis.configuration.AnnotationsRiskLevel,
 		AllowCrossNamespaceResources: fis.configuration.AllowCrossNamespaceResources,
 	}
 }
 
-func (fakeIngressStore) GetConfigMap(key string) (*corev1.ConfigMap, error) {
+func (fakeIngressStore) GetConfigMap(_ string) (*corev1.ConfigMap, error) {
 	return nil, fmt.Errorf("test error")
 }
 
-func (fakeIngressStore) GetSecret(key string) (*corev1.Secret, error) {
+func (fakeIngressStore) GetSecret(_ string) (*corev1.Secret, error) {
 	return nil, fmt.Errorf("test error")
 }
 
-func (fakeIngressStore) GetService(key string) (*corev1.Service, error) {
+func (fakeIngressStore) GetService(_ string) (*corev1.Service, error) {
 	return nil, fmt.Errorf("test error")
 }
 
-func (fakeIngressStore) GetServiceEndpointsSlices(key string) ([]*discoveryv1.EndpointSlice, error) {
+func (fakeIngressStore) GetServiceEndpointsSlices(_ string) ([]*discoveryv1.EndpointSlice, error) {
 	return nil, fmt.Errorf("test error")
 }
 
-func (fis fakeIngressStore) ListIngresses() []*ingress.Ingress {
+func (fis *fakeIngressStore) ListIngresses() []*ingress.Ingress {
 	return fis.ingresses
 }
 
-func (fis fakeIngressStore) FilterIngresses(ingresses []*ingress.Ingress, filterFunc store.IngressFilterFunc) []*ingress.Ingress {
+func (fis *fakeIngressStore) FilterIngresses(ingresses []*ingress.Ingress, _ store.IngressFilterFunc) []*ingress.Ingress {
 	return ingresses
 }
 
-func (fakeIngressStore) GetLocalSSLCert(name string) (*ingress.SSLCert, error) {
+func (fakeIngressStore) GetLocalSSLCert(_ string) (*ingress.SSLCert, error) {
 	return nil, fmt.Errorf("test error")
 }
 
@@ -120,7 +125,7 @@ func (fakeIngressStore) GetDefaultBackend() defaults.Backend {
 	return defaults.Backend{}
 }
 
-func (fakeIngressStore) Run(stopCh chan struct{}) {}
+func (fakeIngressStore) Run(_ chan struct{}) {}
 
 type testNginxTestCommand struct {
 	t        *testing.T
@@ -129,7 +134,7 @@ type testNginxTestCommand struct {
 	err      error
 }
 
-func (ntc testNginxTestCommand) ExecCommand(args ...string) *exec.Cmd {
+func (ntc testNginxTestCommand) ExecCommand(_ ...string) *exec.Cmd {
 	return nil
 }
 
@@ -152,7 +157,7 @@ func (ntc testNginxTestCommand) Test(cfg string) ([]byte, error) {
 
 type fakeTemplate struct{}
 
-func (fakeTemplate) Write(conf ngx_config.TemplateConfig) ([]byte, error) {
+func (fakeTemplate) Write(conf *ngx_config.TemplateConfig) ([]byte, error) {
 	r := []byte{}
 	for _, s := range conf.Servers {
 		if len(r) > 0 {
@@ -196,7 +201,7 @@ func TestCheckIngress(t *testing.T) {
 	nginx.metricCollector = metric.DummyCollector{}
 
 	nginx.t = fakeTemplate{}
-	nginx.store = fakeIngressStore{
+	nginx.store = &fakeIngressStore{
 		ingresses: []*ingress.Ingress{},
 	}
 
@@ -226,7 +231,7 @@ func TestCheckIngress(t *testing.T) {
 		}
 
 		t.Run("When the hostname is updated", func(t *testing.T) {
-			nginx.store = fakeIngressStore{
+			nginx.store = &fakeIngressStore{
 				ingresses: []*ingress.Ingress{
 					{
 						Ingress:           *ing,
@@ -273,7 +278,7 @@ func TestCheckIngress(t *testing.T) {
 		})
 
 		t.Run("When snippets are disabled and user tries to use snippet annotation", func(t *testing.T) {
-			nginx.store = fakeIngressStore{
+			nginx.store = &fakeIngressStore{
 				ingresses: []*ingress.Ingress{},
 				configuration: ngx_config.Configuration{
 					AllowSnippetAnnotations: false,
@@ -290,7 +295,7 @@ func TestCheckIngress(t *testing.T) {
 		})
 
 		t.Run("When invalid directives are used in annotation values", func(t *testing.T) {
-			nginx.store = fakeIngressStore{
+			nginx.store = &fakeIngressStore{
 				ingresses: []*ingress.Ingress{},
 				configuration: ngx_config.Configuration{
 					AnnotationValueWordBlocklist: "invalid_directive, another_directive",
@@ -366,12 +371,11 @@ func TestCheckIngress(t *testing.T) {
 }
 
 func TestCheckWarning(t *testing.T) {
-
 	// Ensure no panic with wrong arguments
-	var nginx = &NGINXController{}
+	nginx := &NGINXController{}
 
 	nginx.t = fakeTemplate{}
-	nginx.store = fakeIngressStore{
+	nginx.store = &fakeIngressStore{
 		ingresses: []*ingress.Ingress{},
 	}
 
@@ -390,7 +394,7 @@ func TestCheckWarning(t *testing.T) {
 		},
 	}
 	t.Run("when a deprecated annotation is used a warning should be returned", func(t *testing.T) {
-		ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("enable-influxdb")] = "true"
+		ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("enable-influxdb")] = TRUE
 		defer func() {
 			ing.ObjectMeta.Annotations = map[string]string{}
 		}()
@@ -407,7 +411,6 @@ func TestCheckWarning(t *testing.T) {
 	})
 
 	t.Run("When an invalid pathType is used, a warning should be returned", func(t *testing.T) {
-
 		rules := ing.Spec.DeepCopy().Rules
 		ing.Spec.Rules = []networking.IngressRule{
 			{
@@ -443,8 +446,8 @@ func TestCheckWarning(t *testing.T) {
 		}
 
 		t.Run("adding invalid annotations increases the warning count", func(t *testing.T) {
-			ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("enable-influxdb")] = "true"
-			ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("secure-verify-ca-secret")] = "true"
+			ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("enable-influxdb")] = TRUE
+			ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("secure-verify-ca-secret")] = TRUE
 			ing.ObjectMeta.Annotations[parser.GetAnnotationWithPrefix("influxdb-host")] = "blabla"
 			defer func() {
 				ing.ObjectMeta.Annotations = map[string]string{}
@@ -472,6 +475,7 @@ func TestCheckWarning(t *testing.T) {
 	})
 }
 
+//nolint:dupl // Ignore dupl errors for similar test case
 func TestMergeAlternativeBackends(t *testing.T) {
 	testCases := map[string]struct {
 		ingress      *ingress.Ingress
@@ -1537,8 +1541,8 @@ func TestExtractTLSSecretName(t *testing.T) {
 	}
 }
 
+//nolint:gocyclo // Ignore function complexity error
 func TestGetBackendServers(t *testing.T) {
-
 	testCases := []struct {
 		Ingresses    []*ingress.Ingress
 		Validate     func(ingresses []*ingress.Ingress, upstreams []*ingress.Backend, servers []*ingress.Server)
@@ -2078,7 +2082,7 @@ func TestGetBackendServers(t *testing.T) {
 					t.Errorf("server hostname should be 'example.com', got '%s'", s.Hostname)
 				}
 
-				if s.Locations[0].Backend != "example-http-svc-1-80" || s.Locations[1].Backend != "example-http-svc-1-80" || s.Locations[2].Backend != "example-http-svc-1-80" {
+				if s.Locations[0].Backend != exampleBackend || s.Locations[1].Backend != exampleBackend || s.Locations[2].Backend != exampleBackend {
 					t.Errorf("all location backend should be 'example-http-svc-1-80'")
 				}
 
@@ -2087,7 +2091,7 @@ func TestGetBackendServers(t *testing.T) {
 					return
 				}
 
-				if upstreams[0].Name != "example-http-svc-1-80" {
+				if upstreams[0].Name != exampleBackend {
 					t.Errorf("example-http-svc-1-80 should be first upstream, got %s", upstreams[0].Name)
 					return
 				}
@@ -2101,6 +2105,7 @@ func TestGetBackendServers(t *testing.T) {
 			SetConfigMap: testConfigMap,
 		},
 		{
+			//nolint:dupl // Ignore dupl errors for similar test case
 			Ingresses: []*ingress.Ingress{
 				{
 					Ingress: networking.Ingress{
@@ -2208,6 +2213,7 @@ func TestGetBackendServers(t *testing.T) {
 			SetConfigMap: testConfigMap,
 		},
 		{
+			//nolint:dupl // Ignore dupl errors for similar test case
 			Ingresses: []*ingress.Ingress{
 				{
 					Ingress: networking.Ingress{
@@ -2319,7 +2325,7 @@ func TestGetBackendServers(t *testing.T) {
 						SelfLink: fmt.Sprintf("/api/v1/namespaces/%s/configmaps/config", ns),
 					},
 					Data: map[string]string{
-						"proxy-ssl-location-only": "true",
+						"proxy-ssl-location-only": TRUE,
 					},
 				}
 			},
@@ -2380,7 +2386,7 @@ func TestGetBackendServers(t *testing.T) {
 						SelfLink: fmt.Sprintf("/api/v1/namespaces/%s/configmaps/config", ns),
 					},
 					Data: map[string]string{
-						"proxy-ssl-location-only": "true",
+						"proxy-ssl-location-only": TRUE,
 					},
 				}
 			},
@@ -2449,7 +2455,6 @@ func TestGetBackendServers(t *testing.T) {
 				if len(s.Locations[0].Allowlist.CIDR) != 1 || s.Locations[0].Allowlist.CIDR[0] != "10.0.0.0/24" {
 					t.Errorf("allow list was incorrectly dropped, len should be 1 and contain 10.0.0.0/24")
 				}
-
 			},
 			SetConfigMap: func(ns string) *corev1.ConfigMap {
 				return &corev1.ConfigMap{
@@ -2520,7 +2525,7 @@ func newNGINXController(t *testing.T) *NGINXController {
 		channels.NewRingChannel(10),
 		false,
 		true,
-		&ingressclass.IngressClassConfiguration{
+		&ingressclass.Configuration{
 			Controller:      "k8s.io/ingress-nginx",
 			AnnotationValue: "nginx",
 		},
@@ -2586,7 +2591,7 @@ func newDynamicNginxController(t *testing.T, setConfigMap func(string) *corev1.C
 		channels.NewRingChannel(10),
 		false,
 		true,
-		&ingressclass.IngressClassConfiguration{
+		&ingressclass.Configuration{
 			Controller:      "k8s.io/ingress-nginx",
 			AnnotationValue: "nginx",
 		},