Replace ioutil with os/io packages

api/v1alpha3/awscluster_conversion.go

@@ -80,7 +80,6 @@ func (r *AWSClusterList) ConvertFrom(srcRaw conversion.Hub) error {
 	return Convert_v1beta1_AWSClusterList_To_v1alpha3_AWSClusterList(src, r, nil)
 }
 
-
 // Convert_v1alpha3_APIEndpoint_To_v1beta1_APIEndpoint .
 func Convert_v1alpha3_APIEndpoint_To_v1beta1_APIEndpoint(in *clusterv1alpha3.APIEndpoint, out *clusterv1.APIEndpoint, s apiconversion.Scope) error {
 	return clusterv1alpha3.Convert_v1alpha3_APIEndpoint_To_v1beta1_APIEndpoint(in, out, s)

api/v1alpha3/awsidentity_conversion.go

@@ -115,7 +115,6 @@ func (r *AWSClusterControllerIdentityList) ConvertFrom(srcRaw conversion.Hub) er
 	return Convert_v1beta1_AWSClusterControllerIdentityList_To_v1alpha3_AWSClusterControllerIdentityList(src, r, nil)
 }
 
-
 // Convert_v1alpha3_AWSClusterStaticIdentitySpec_To_v1beta1_AWSClusterStaticIdentitySpec .
 func Convert_v1alpha3_AWSClusterStaticIdentitySpec_To_v1beta1_AWSClusterStaticIdentitySpec(in *AWSClusterStaticIdentitySpec, out *infrav1.AWSClusterStaticIdentitySpec, s apiconversion.Scope) error {
 	return autoConvert_v1alpha3_AWSClusterStaticIdentitySpec_To_v1beta1_AWSClusterStaticIdentitySpec(in, out, s)

api/v1alpha3/awsmachine_conversion.go

@@ -134,7 +134,6 @@ func (r *AWSMachineTemplateList) ConvertFrom(srcRaw conversion.Hub) error {
 	return Convert_v1beta1_AWSMachineTemplateList_To_v1alpha3_AWSMachineTemplateList(src, r, nil)
 }
 
-
 // Convert_v1beta1_Volume_To_v1alpha3_Volume .
 func Convert_v1beta1_Volume_To_v1alpha3_Volume(in *infrav1.Volume, out *Volume, s apiconversion.Scope) error {
 	return autoConvert_v1beta1_Volume_To_v1alpha3_Volume(in, out, s)

api/v1alpha4/awscluster_conversion.go

@@ -39,7 +39,6 @@ func (r *AWSCluster) ConvertFrom(srcRaw conversion.Hub) error {
 	return Convert_v1beta1_AWSCluster_To_v1alpha4_AWSCluster(src, r, nil)
 }
 
-
 // ConvertTo converts the v1alpha3 AWSCluster receiver to a v1beta1 AWSCluster.
 func (r *AWSClusterTemplate) ConvertTo(dstRaw conversion.Hub) error {
 	dst := dstRaw.(*infrav1.AWSClusterTemplate)
@@ -89,7 +88,6 @@ func Convert_v1beta1_APIEndpoint_To_v1alpha4_APIEndpoint(in *clusterv1.APIEndpoi
 	return clusterv1alpha4.Convert_v1beta1_APIEndpoint_To_v1alpha4_APIEndpoint(in, out, s)
 }
 
-
 // ConvertTo converts the v1alpha4 AWSClusterList receiver to a v1beta1 AWSClusterList.
 func (src *AWSClusterList) ConvertTo(dstRaw conversion.Hub) error {
 	dst := dstRaw.(*infrav1.AWSClusterList)

api/v1alpha4/awsidentity_conversion.go

@@ -28,7 +28,7 @@ func (src *AWSClusterControllerIdentity) ConvertTo(dstRaw conversion.Hub) error
 }
 
 // ConvertFrom converts the v1beta1 AWSClusterControllerIdentity to a v1alpha4 AWSClusterControllerIdentity.
-func (dst *AWSClusterControllerIdentity) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSClusterControllerIdentity) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSClusterControllerIdentity)
 
 	return Convert_v1beta1_AWSClusterControllerIdentity_To_v1alpha4_AWSClusterControllerIdentity(src, dst, nil)
@@ -41,7 +41,7 @@ func (src *AWSClusterControllerIdentityList) ConvertTo(dstRaw conversion.Hub) er
 }
 
 // ConvertFrom converts the v1beta1 AWSClusterControllerIdentityList to a v1alpha4 AWSClusterControllerIdentityList.
-func (dst *AWSClusterControllerIdentityList) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSClusterControllerIdentityList) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSClusterControllerIdentityList)
 
 	return Convert_v1beta1_AWSClusterControllerIdentityList_To_v1alpha4_AWSClusterControllerIdentityList(src, dst, nil)
@@ -54,7 +54,7 @@ func (src *AWSClusterRoleIdentity) ConvertTo(dstRaw conversion.Hub) error {
 }
 
 // ConvertFrom converts the v1beta1 AWSClusterRoleIdentity to a v1alpha4 AWSClusterRoleIdentity.
-func (dst *AWSClusterRoleIdentity) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSClusterRoleIdentity) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSClusterRoleIdentity)
 
 	return Convert_v1beta1_AWSClusterRoleIdentity_To_v1alpha4_AWSClusterRoleIdentity(src, dst, nil)
@@ -67,21 +67,20 @@ func (src *AWSClusterRoleIdentityList) ConvertTo(dstRaw conversion.Hub) error {
 }
 
 // ConvertFrom converts the v1beta1 AWSClusterRoleIdentityList to a v1alpha4 AWSClusterRoleIdentityList.
-func (dst *AWSClusterRoleIdentityList) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSClusterRoleIdentityList) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSClusterRoleIdentityList)
 
 	return Convert_v1beta1_AWSClusterRoleIdentityList_To_v1alpha4_AWSClusterRoleIdentityList(src, dst, nil)
 }
 
-
 // ConvertTo converts the v1alpha4 AWSClusterStaticIdentity receiver to a v1beta1 AWSClusterStaticIdentity.
 func (src *AWSClusterStaticIdentity) ConvertTo(dstRaw conversion.Hub) error {
 	dst := dstRaw.(*infrav1.AWSClusterStaticIdentity)
 	return Convert_v1alpha4_AWSClusterStaticIdentity_To_v1beta1_AWSClusterStaticIdentity(src, dst, nil)
 }
 
 // ConvertFrom converts the v1beta1 AWSClusterStaticIdentity to a v1alpha4 AWSClusterStaticIdentity.
-func (dst *AWSClusterStaticIdentity) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSClusterStaticIdentity) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSClusterStaticIdentity)
 
 	return Convert_v1beta1_AWSClusterStaticIdentity_To_v1alpha4_AWSClusterStaticIdentity(src, dst, nil)
@@ -94,7 +93,7 @@ func (src *AWSClusterStaticIdentityList) ConvertTo(dstRaw conversion.Hub) error
 }
 
 // ConvertFrom converts the v1beta1 AWSClusterStaticIdentityList to a v1alpha4 AWSClusterStaticIdentityList.
-func (dst *AWSClusterStaticIdentityList) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSClusterStaticIdentityList) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSClusterStaticIdentityList)
 
 	return Convert_v1beta1_AWSClusterStaticIdentityList_To_v1alpha4_AWSClusterStaticIdentityList(src, dst, nil)

api/v1alpha4/awsmachine_conversion.go

@@ -30,7 +30,7 @@ func (src *AWSMachine) ConvertTo(dstRaw conversion.Hub) error {
 }
 
 // ConvertFrom converts the v1beta1 AWSMachine to a v1alpha4 AWSMachine.
-func (dst *AWSMachine) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSMachine) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSMachine)
 
 	return Convert_v1beta1_AWSMachine_To_v1alpha4_AWSMachine(src, dst, nil)
@@ -43,7 +43,7 @@ func (src *AWSMachineList) ConvertTo(dstRaw conversion.Hub) error {
 }
 
 // ConvertFrom converts the v1beta1 AWSMachineList to a v1alpha4 AWSMachineList.
-func (dst *AWSMachineList) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSMachineList) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSMachineList)
 
 	return Convert_v1beta1_AWSMachineList_To_v1alpha4_AWSMachineList(src, dst, nil)
@@ -57,13 +57,13 @@ func (r *AWSMachineTemplate) ConvertTo(dstRaw conversion.Hub) error {
 		return err
 	}
 
-		// Manually restore data.
-		restored := &infrav1.AWSMachineTemplate{}
-		if ok, err := utilconversion.UnmarshalData(r, restored); err != nil || !ok {
-			return err
-		}
+	// Manually restore data.
+	restored := &infrav1.AWSMachineTemplate{}
+	if ok, err := utilconversion.UnmarshalData(r, restored); err != nil || !ok {
+		return err
+	}
 
-		dst.Spec.Template.ObjectMeta = restored.Spec.Template.ObjectMeta
+	dst.Spec.Template.ObjectMeta = restored.Spec.Template.ObjectMeta
 
 	return nil
 }
@@ -91,13 +91,12 @@ func (src *AWSMachineTemplateList) ConvertTo(dstRaw conversion.Hub) error {
 }
 
 // ConvertFrom converts the v1beta1 AWSMachineTemplateList to a v1alpha4 AWSMachineTemplateList.
-func (dst *AWSMachineTemplateList) ConvertFrom(srcRaw conversion.Hub) error{
+func (dst *AWSMachineTemplateList) ConvertFrom(srcRaw conversion.Hub) error {
 	src := srcRaw.(*infrav1.AWSMachineTemplateList)
 
 	return Convert_v1beta1_AWSMachineTemplateList_To_v1alpha4_AWSMachineTemplateList(src, dst, nil)
 }
 
-
 func Convert_v1beta1_AWSMachineTemplateResource_To_v1alpha4_AWSMachineTemplateResource(in *infrav1.AWSMachineTemplateResource, out *AWSMachineTemplateResource, s apiconversion.Scope) error {
 	return autoConvert_v1beta1_AWSMachineTemplateResource_To_v1alpha4_AWSMachineTemplateResource(in, out, s)
 }

cmd/clusterawsadm/ami/helper.go

@@ -18,7 +18,7 @@ package ami
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 
@@ -88,11 +88,11 @@ func latestStableRelease() (string, error) {
 		return "", err
 	}
 	defer resp.Body.Close()
-	b, err := ioutil.ReadAll(resp.Body)
+
+	b, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", err
 	}
-
 	latestVersion := strings.TrimSpace(string(b))
 	tagPrefix := "v"
 	latestVersionSemVer, err := semver.Make(strings.TrimPrefix(latestVersion, tagPrefix))
@@ -110,7 +110,7 @@ func latestStableRelease() (string, error) {
 			return "", err
 		}
 		defer resp.Body.Close()
-		b, err = ioutil.ReadAll(resp.Body)
+		b, err = io.ReadAll(resp.Body)
 		if err != nil {
 			return "", err
 		}

cmd/clusterawsadm/cloudformation/bootstrap/iam.go

@@ -18,7 +18,7 @@ package bootstrap
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path"
 
 	"sigs.k8s.io/cluster-api-provider-aws/cmd/clusterawsadm/converters"
@@ -53,7 +53,7 @@ func (t Template) GenerateManagedIAMPolicyDocuments(policyDocDir string) error {
 		}
 
 		fn := path.Join(policyDocDir, fmt.Sprintf("%s.json", pn))
-		err = ioutil.WriteFile(fn, []byte(pds), 0o600)
+		err = os.WriteFile(fn, []byte(pds), 0o600)
 		if err != nil {
 			return fmt.Errorf("failed to generate policy document for ManagedIAMPolicy %q: %w", pn, err)
 		}

cmd/clusterawsadm/cloudformation/bootstrap/template_test.go

@@ -18,7 +18,7 @@ package bootstrap
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path"
 	"testing"
 
@@ -171,7 +171,7 @@ func Test_RenderCloudformation(t *testing.T) {
 
 	for _, c := range cases {
 		cfn := cloudformation.Template{}
-		data, err := ioutil.ReadFile(path.Join("fixtures", c.fixture+".yaml"))
+		data, err := os.ReadFile(path.Join("fixtures", c.fixture+".yaml"))
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -184,7 +184,7 @@ func Test_RenderCloudformation(t *testing.T) {
 		if err != nil {
 			t.Fatal(err)
 		}
-		ioutil.WriteFile("/tmp/tmp1", tData, 0600) // nolint:gosec
+		os.WriteFile("/tmp/tmp1", tData, 0600)
 
 		if string(tData) != string(data) {
 			dmp := diffmatchpatch.New()

cmd/clusterawsadm/configreader/configreader.go

@@ -18,7 +18,7 @@ package configreader
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/pkg/errors"
@@ -66,7 +66,7 @@ type fsLoader struct {
 
 // ReadFile reads a file.
 func (fsLoader) ReadFile(filename string) ([]byte, error) {
-	return ioutil.ReadFile(filepath.Clean(filename))
+	return os.ReadFile(filepath.Clean(filename))
 }
 
 // NewFsLoader returns a Loader that loads a AWSIAMConfiguration from the `config file`.

exp/api/v1alpha4/conversion_test.go

@@ -33,9 +33,9 @@ func TestFuzzyConversion(t *testing.T) {
 	g.Expect(v1beta1.AddToScheme(scheme)).To(Succeed())
 
 	t.Run("for AWSMachinePool", utilconversion.FuzzTestFunc(utilconversion.FuzzTestFuncInput{
-		Scheme:      scheme,
-		Hub:         &v1beta1.AWSMachinePool{},
-		Spoke:       &AWSMachinePool{},
+		Scheme: scheme,
+		Hub:    &v1beta1.AWSMachinePool{},
+		Spoke:  &AWSMachinePool{},
 	}))
 
 	t.Run("for AWSManagedMachinePool", utilconversion.FuzzTestFunc(utilconversion.FuzzTestFuncInput{

hack/tools/tools.go

@@ -20,20 +20,20 @@ limitations under the License.
 package tools
 
 import (
+	_ "embed"
 	_ "github.com/a8m/envsubst"
 	_ "github.com/ahmetb/gen-crd-api-reference-docs"
 	_ "github.com/golang/mock/mockgen"
 	_ "github.com/golangci/golangci-lint/cmd/golangci-lint"
 	_ "github.com/itchyny/gojq/cmd/gojq"
 	_ "github.com/onsi/ginkgo/ginkgo"
+	_ "k8s.io/apimachinery/pkg/util/intstr"
 	_ "k8s.io/code-generator"
+	_ "k8s.io/code-generator/cmd/conversion-gen"
 	_ "k8s.io/release/cmd/release-notes"
 	_ "sigs.k8s.io/cluster-api/hack/tools/mdbook/embed"
 	_ "sigs.k8s.io/controller-tools/cmd/controller-gen"
 	_ "sigs.k8s.io/kind"
 	_ "sigs.k8s.io/kustomize/kustomize/v4"
 	_ "sigs.k8s.io/testing_frameworks/integration"
-	_ "k8s.io/apimachinery/pkg/util/intstr"
-	_ "embed"
-	_ "k8s.io/code-generator/cmd/conversion-gen"
 )

test/e2e/shared/aws.go

@@ -24,7 +24,6 @@ import (
 	b64 "encoding/base64"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
@@ -415,7 +414,7 @@ func DumpCloudTrailEvents(e2eCtx *E2EContext) {
 	}
 	logPath := filepath.Join(e2eCtx.Settings.ArtifactFolder, "cloudtrail-events.yaml")
 	dat, err := yaml.Marshal(events)
-	if err := ioutil.WriteFile(logPath, dat, 0600); err != nil {
+	if err := os.WriteFile(logPath, dat, 0600); err != nil {
 		fmt.Fprintf(GinkgoWriter, "couldn't write cloudtrail events to file: file=%s err=%s", logPath, err)
 		return
 	}
@@ -574,7 +573,7 @@ func dumpEKSCluster(cluster *eks.Cluster, logPath string) {
 	}
 	defer f.Close()
 
-	if err := ioutil.WriteFile(f.Name(), clusterYAML, 0600); err != nil {
+	if err := os.WriteFile(f.Name(), clusterYAML, 0600); err != nil {
 		fmt.Fprintf(GinkgoWriter, "couldn't write cluster yaml to file: name=%s file=%s err=%s", *cluster.Name, f.Name(), err)
 		return
 	}

test/e2e/shared/exec.go

@@ -22,7 +22,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -120,7 +119,7 @@ func commandsForMachine(ctx context.Context, e2eCtx *E2EContext, f *os.File, ins
 			return
 		}
 		result, _, err := e.Expect(shellStart, 20*time.Second)
-		if err := ioutil.WriteFile(logFile, []byte(result), os.ModePerm); err != nil {
+		if err := os.WriteFile(logFile, []byte(result), os.ModePerm); err != nil {
 			fmt.Fprintf(f, "error writing log file: err=%s", err)
 			return
 		}

test/e2e/shared/resource.go

@@ -21,7 +21,6 @@ package shared
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"time"
@@ -58,7 +57,7 @@ func WriteResourceQuotesToFile(logPath string, serviceQuotas map[string]*Service
 	data, err := yaml.Marshal(resources)
 	Expect(err).NotTo(HaveOccurred())
 
-	err = ioutil.WriteFile(logPath, data, 0644)
+	err = os.WriteFile(logPath, data, 0644)
 	Expect(err).NotTo(HaveOccurred())
 }
 
@@ -86,7 +85,7 @@ func (r *TestResource) WriteRequestedResources(e2eCtx *E2EContext, testName stri
 	err := fileLock.Lock()
 	Expect(err).NotTo(HaveOccurred())
 
-	requestedResources, err := ioutil.ReadFile(requestedResourceFilePath)
+	requestedResources, err := os.ReadFile(requestedResourceFilePath)
 	Expect(err).NotTo(HaveOccurred())
 
 	resources := struct {
@@ -101,7 +100,7 @@ func (r *TestResource) WriteRequestedResources(e2eCtx *E2EContext, testName stri
 	resources.TestResourceMap[testName] = *r
 	str, err := yaml.Marshal(resources)
 	Expect(err).NotTo(HaveOccurred())
-	Expect(ioutil.WriteFile(requestedResourceFilePath, str, 0644)).To(Succeed())
+	Expect(os.WriteFile(requestedResourceFilePath, str, 0644)).To(Succeed())
 }
 
 func (r *TestResource) doesSatisfy(request *TestResource) bool {
@@ -164,7 +163,7 @@ func AcquireResources(request *TestResource, nodeNum int, fileLock *flock.Flock)
 		if err != nil {
 			continue
 		}
-		resourceText, err := ioutil.ReadFile(ResourceQuotaFilePath)
+		resourceText, err := os.ReadFile(ResourceQuotaFilePath)
 		if err != nil {
 			return err
 		}
@@ -180,7 +179,7 @@ func AcquireResources(request *TestResource, nodeNum int, fileLock *flock.Flock)
 			if err != nil {
 				return err
 			}
-			if err := ioutil.WriteFile(ResourceQuotaFilePath, data, 0644); err != nil {
+			if err := os.WriteFile(ResourceQuotaFilePath, data, 0644); err != nil {
 				return err
 			}
 			Byf("Node %d acquired resources: %s", nodeNum, request.String())
@@ -213,7 +212,7 @@ func ReleaseResources(request *TestResource, nodeNum int, fileLock *flock.Flock)
 		if err := fileLock.Lock(); err != nil {
 			continue
 		}
-		resourceText, err := ioutil.ReadFile(ResourceQuotaFilePath)
+		resourceText, err := os.ReadFile(ResourceQuotaFilePath)
 		if err != nil {
 			return err
 		}
@@ -226,7 +225,7 @@ func ReleaseResources(request *TestResource, nodeNum int, fileLock *flock.Flock)
 		if err != nil {
 			return err
 		}
-		if err := ioutil.WriteFile(ResourceQuotaFilePath, data, 0644); err != nil {
+		if err := os.WriteFile(ResourceQuotaFilePath, data, 0644); err != nil {
 			return err
 		}
 		Byf("Node %d released resources: %s", nodeNum, request.String())