chore: remove deprecated io/ioutil

Signed-off-by: Dmitry Rybin <ayrowa@yandex.ru>

pkg/manifestgen/install/install.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
@@ -55,7 +54,7 @@ func Generate(options Options, manifestsBase string) (*manifestgen.Manifest, err
 	} else {
 		// download the manifests base from GitHub
 		if manifestsBase == "" {
-			manifestsBase, err = ioutil.TempDir("", options.Namespace)
+			manifestsBase, err = os.MkdirTemp("", options.Namespace)
 			if err != nil {
 				return nil, fmt.Errorf("temp dir error: %w", err)
 			}
@@ -78,7 +77,7 @@ func Generate(options Options, manifestsBase string) (*manifestgen.Manifest, err
 		}
 	}
 
-	content, err := ioutil.ReadFile(output)
+	content, err := os.ReadFile(output)
 	if err != nil {
 		return nil, err
 	}

pkg/manifestgen/install/manifests.go

@@ -20,7 +20,6 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
@@ -103,12 +102,12 @@ func generate(base string, options Options) error {
 	// workaround for kustomize not being able to patch the SA in ClusterRoleBindings
 	defaultNS := MakeDefaultOptions().Namespace
 	if defaultNS != options.Namespace {
-		rbac, err := ioutil.ReadFile(rbacFile)
+		rbac, err := os.ReadFile(rbacFile)
 		if err != nil {
 			return fmt.Errorf("reading rbac file failed: %w", err)
 		}
 		rbac = bytes.ReplaceAll(rbac, []byte(defaultNS), []byte(options.Namespace))
-		if err := ioutil.WriteFile(rbacFile, rbac, os.ModePerm); err != nil {
+		if err := os.WriteFile(rbacFile, rbac, os.ModePerm); err != nil {
 			return fmt.Errorf("replacing service account namespace in rbac failed: %w", err)
 		}
 	}

pkg/manifestgen/kustomization/kustomization.go

@@ -17,7 +17,6 @@ limitations under the License.
 package kustomization
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -113,7 +112,7 @@ func Generate(options Options) (*manifestgen.Manifest, error) {
 		}, nil
 	}
 
-	kd, err := ioutil.ReadFile(abskfile)
+	kd, err := os.ReadFile(abskfile)
 	if err != nil {
 		return nil, err
 	}

pkg/manifestgen/manifest.go

@@ -18,7 +18,6 @@ package manifestgen
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -46,7 +45,7 @@ func (m *Manifest) WriteFile(rootDir string) (string, error) {
 		return "", fmt.Errorf("unable to create dir, error: %w", err)
 	}
 
-	if err := ioutil.WriteFile(output, []byte(m.Content), os.ModePerm); err != nil {
+	if err := os.WriteFile(output, []byte(m.Content), os.ModePerm); err != nil {
 		return "", fmt.Errorf("unable to write file, error: %w", err)
 	}
 	return output, nil

pkg/manifestgen/sourcesecret/sourcesecret.go

@@ -19,8 +19,8 @@ package sourcesecret
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"net"
+	"os"
 	"path"
 	"time"
 
@@ -62,17 +62,17 @@ func Generate(options Options) (*manifestgen.Manifest, error) {
 
 	var caFile []byte
 	if options.CAFilePath != "" {
-		if caFile, err = ioutil.ReadFile(options.CAFilePath); err != nil {
+		if caFile, err = os.ReadFile(options.CAFilePath); err != nil {
 			return nil, fmt.Errorf("failed to read CA file: %w", err)
 		}
 	}
 
 	var certFile, keyFile []byte
 	if options.CertFilePath != "" && options.KeyFilePath != "" {
-		if certFile, err = ioutil.ReadFile(options.CertFilePath); err != nil {
+		if certFile, err = os.ReadFile(options.CertFilePath); err != nil {
 			return nil, fmt.Errorf("failed to read cert file: %w", err)
 		}
-		if keyFile, err = ioutil.ReadFile(options.KeyFilePath); err != nil {
+		if keyFile, err = os.ReadFile(options.KeyFilePath); err != nil {
 			return nil, fmt.Errorf("failed to read key file: %w", err)
 		}
 	}
@@ -129,7 +129,7 @@ func buildSecret(keypair *ssh.KeyPair, hostKey, caFile, certFile, keyFile []byte
 }
 
 func loadKeyPair(path string, password string) (*ssh.KeyPair, error) {
-	b, err := ioutil.ReadFile(path)
+	b, err := os.ReadFile(path)
 	if err != nil {
 		return nil, fmt.Errorf("failed to open private key file: %w", err)
 	}

pkg/manifestgen/sourcesecret/sourcesecret_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package sourcesecret
 
 import (
-	"io/ioutil"
 	"os"
 	"reflect"
 	"testing"
@@ -43,8 +42,8 @@ func Test_passwordLoadKeyPair(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			pk, _ := ioutil.ReadFile(tt.privateKeyPath)
-			ppk, _ := ioutil.ReadFile(tt.publicKeyPath)
+			pk, _ := os.ReadFile(tt.privateKeyPath)
+			ppk, _ := os.ReadFile(tt.publicKeyPath)
 
 			got, err := loadKeyPair(tt.privateKeyPath, tt.password)
 			if err != nil {
@@ -65,7 +64,7 @@ func Test_passwordLoadKeyPair(t *testing.T) {
 func Test_PasswordlessLoadKeyPair(t *testing.T) {
 	for algo, privateKey := range testdata.PEMBytes {
 		t.Run(algo, func(t *testing.T) {
-			f, err := ioutil.TempFile("", "test-private-key-")
+			f, err := os.CreateTemp("", "test-private-key-")
 			if err != nil {
 				t.Fatalf("unable to create temporary file. err: %s", err)
 			}
@@ -81,7 +80,7 @@ func Test_PasswordlessLoadKeyPair(t *testing.T) {
 				return
 			}
 
-			pk, _ := ioutil.ReadFile(f.Name())
+			pk, _ := os.ReadFile(f.Name())
 			if !reflect.DeepEqual(got.PrivateKey, pk) {
 				t.Errorf("PrivateKey %s != %s", got.PrivateKey, string(privateKey))
 			}