chore: Replace deprecated ioutil in CLI code

cmd/argocd-dex/commands/argocd_dex.go

@@ -2,7 +2,6 @@ package commands
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"syscall"
@@ -84,7 +83,7 @@ func NewRunDexCommand() *cobra.Command {
 				if len(dexCfgBytes) == 0 {
 					log.Infof("dex is not configured")
 				} else {
-					err = ioutil.WriteFile("/tmp/dex.yaml", dexCfgBytes, 0644)
+					err = os.WriteFile("/tmp/dex.yaml", dexCfgBytes, 0644)
 					errors.CheckError(err)
 					log.Debug(redactor(string(dexCfgBytes)))
 					cmd = exec.Command("dex", "serve", "/tmp/dex.yaml")
@@ -175,7 +174,7 @@ func NewGenDexConfigCommand() *cobra.Command {
 				errors.CheckError(err)
 				fmt.Print(string(maskedDexCfgBytes))
 			} else {
-				err = ioutil.WriteFile(out, dexCfgBytes, 0644)
+				err = os.WriteFile(out, dexCfgBytes, 0644)
 				errors.CheckError(err)
 			}
 			return nil

cmd/argocd/commands/admin/app.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"sort"
@@ -303,7 +302,7 @@ func saveToFile(err error, outputFormat string, result reconcileResults, outputP
 		return fmt.Errorf("format %s is not supported", outputFormat)
 	}
 
-	return ioutil.WriteFile(outputPath, data, 0644)
+	return os.WriteFile(outputPath, data, 0644)
 }
 
 func getReconcileResults(ctx context.Context, appClientset appclientset.Interface, namespace string, selector string) ([]appReconcileResult, error) {

cmd/argocd/commands/admin/backup.go

@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 
 	"github.com/argoproj/gitops-engine/pkg/utils/kube"
@@ -139,9 +138,9 @@ func NewImportCommand() *cobra.Command {
 
 			var input []byte
 			if in := args[0]; in == "-" {
-				input, err = ioutil.ReadAll(os.Stdin)
+				input, err = io.ReadAll(os.Stdin)
 			} else {
-				input, err = ioutil.ReadFile(in)
+				input, err = os.ReadFile(in)
 			}
 			errors.CheckError(err)
 			var dryRunMsg string

cmd/argocd/commands/admin/generatespec_utils_test.go

@@ -3,7 +3,6 @@ package admin
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -24,19 +23,17 @@ func TestGetOutWriter_InlineOff(t *testing.T) {
 }
 
 func TestGetOutWriter_InlineOn(t *testing.T) {
-	tmpFile, err := ioutil.TempFile("", "")
-	require.NoError(t, err)
+	tmpFile := t.TempDir()
 	defer func() {
-		_ = os.Remove(tmpFile.Name())
-		_ = os.Remove(fmt.Sprintf("%s.back", tmpFile.Name()))
+		_ = os.Remove(fmt.Sprintf("%s.back", tmpFile))
 	}()
 
-	out, closer, err := getOutWriter(true, tmpFile.Name())
+	out, closer, err := getOutWriter(true, tmpFile)
 	require.NoError(t, err)
 	defer io.Close(closer)
 
-	assert.Equal(t, tmpFile.Name(), out.(*os.File).Name())
-	_, err = os.Stat(fmt.Sprintf("%s.back", tmpFile.Name()))
+	assert.Equal(t, tmpFile, out.(*os.File).Name())
+	_, err = os.Stat(fmt.Sprintf("%s.back", tmpFile))
 	assert.NoError(t, err, "Back file must be created")
 }
 

cmd/argocd/commands/admin/project_allowlist.go

@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -99,7 +98,7 @@ func getResourceList(clientConfig clientcmd.ClientConfig) ([]*metav1.APIResource
 }
 
 func generateProjectAllowList(serverResources []*metav1.APIResourceList, clusterRoleFileName string, projName string) (*v1alpha1.AppProject, error) {
-	yamlBytes, err := ioutil.ReadFile(clusterRoleFileName)
+	yamlBytes, err := os.ReadFile(clusterRoleFileName)
 	if err != nil {
 		return nil, fmt.Errorf("error reading cluster role file: %s", err)
 	}

cmd/argocd/commands/admin/repo.go

@@ -2,7 +2,6 @@ package admin
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 
 	log "github.com/sirupsen/logrus"
@@ -87,13 +86,13 @@ func NewGenRepoSpecCommand() *cobra.Command {
 			// Specifying ssh-private-key-path is only valid for SSH repositories
 			if repoOpts.SshPrivateKeyPath != "" {
 				if ok, _ := git.IsSSHURL(repoOpts.Repo.Repo); ok {
-					keyData, err := ioutil.ReadFile(repoOpts.SshPrivateKeyPath)
+					keyData, err := os.ReadFile(repoOpts.SshPrivateKeyPath)
 					if err != nil {
 						log.Fatal(err)
 					}
 					repoOpts.Repo.SSHPrivateKey = string(keyData)
 				} else {
-					err := fmt.Errorf("--ssh-private-key-path is only supported for SSH repositories.")
+					err := fmt.Errorf("--ssh-private-key-path is only supported for SSH repositories")
 					errors.CheckError(err)
 				}
 			}
@@ -108,9 +107,9 @@ func NewGenRepoSpecCommand() *cobra.Command {
 			// Specifying tls-client-cert-path is only valid for HTTPS repositories
 			if repoOpts.TlsClientCertPath != "" {
 				if git.IsHTTPSURL(repoOpts.Repo.Repo) {
-					tlsCertData, err := ioutil.ReadFile(repoOpts.TlsClientCertPath)
+					tlsCertData, err := os.ReadFile(repoOpts.TlsClientCertPath)
 					errors.CheckError(err)
-					tlsCertKey, err := ioutil.ReadFile(repoOpts.TlsClientCertKeyPath)
+					tlsCertKey, err := os.ReadFile(repoOpts.TlsClientCertKeyPath)
 					errors.CheckError(err)
 					repoOpts.Repo.TLSClientCertData = string(tlsCertData)
 					repoOpts.Repo.TLSClientCertKey = string(tlsCertKey)

cmd/argocd/commands/admin/settings.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"reflect"
 	"sort"
@@ -77,7 +76,7 @@ func (opts *settingsOpts) createSettingsManager(ctx context.Context) (*settings.
 			return nil, err
 		}
 	} else {
-		data, err := ioutil.ReadFile(opts.argocdCMPath)
+		data, err := os.ReadFile(opts.argocdCMPath)
 		if err != nil {
 			return nil, err
 		}
@@ -90,7 +89,7 @@ func (opts *settingsOpts) createSettingsManager(ctx context.Context) (*settings.
 
 	var argocdSecret *corev1.Secret
 	if opts.argocdSecretPath != "" {
-		data, err := ioutil.ReadFile(opts.argocdSecretPath)
+		data, err := os.ReadFile(opts.argocdSecretPath)
 		if err != nil {
 			return nil, err
 		}
@@ -364,7 +363,7 @@ func NewResourceOverridesCommand(cmdCtx commandContext) *cobra.Command {
 }
 
 func executeResourceOverrideCommand(ctx context.Context, cmdCtx commandContext, args []string, callback func(res unstructured.Unstructured, override v1alpha1.ResourceOverride, overrides map[string]v1alpha1.ResourceOverride)) {
-	data, err := ioutil.ReadFile(args[0])
+	data, err := os.ReadFile(args[0])
 	errors.CheckError(err)
 
 	res := unstructured.Unstructured{}

cmd/argocd/commands/admin/settings_rbac_test.go

@@ -2,7 +2,7 @@ package admin
 
 import (
 	"context"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -59,9 +59,9 @@ func Test_PolicyFromYAML(t *testing.T) {
 }
 
 func Test_PolicyFromK8s(t *testing.T) {
+	data, err := os.ReadFile("testdata/rbac/policy.csv")
 	ctx := context.Background()
 
-	data, err := ioutil.ReadFile("testdata/rbac/policy.csv")
 	require.NoError(t, err)
 	kubeclientset := fake.NewSimpleClientset(&v1.ConfigMap{
 		ObjectMeta: metav1.ObjectMeta{

cmd/argocd/commands/admin/settings_test.go

@@ -5,7 +5,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -35,7 +34,7 @@ func captureStdout(callback func()) (string, error) {
 	callback()
 	utils.Close(w)
 
-	data, err := ioutil.ReadAll(r)
+	data, err := io.ReadAll(r)
 
 	if err != nil {
 		return "", err
@@ -235,7 +234,7 @@ spec:
 )
 
 func tempFile(content string) (string, io.Closer, error) {
-	f, err := ioutil.TempFile("", "*.yaml")
+	f, err := os.CreateTemp("", "*.yaml")
 	if err != nil {
 		return "", nil, err
 	}

cmd/argocd/commands/common_test.go

@@ -1,7 +1,7 @@
 package commands
 
 import (
-	"io/ioutil"
+	"io"
 	"os"
 	"testing"
 
@@ -59,7 +59,7 @@ func captureOutput(f func() error) (string, error) {
 		os.Stdout = stdout
 		return "", err
 	}
-	str, err := ioutil.ReadAll(r)
+	str, err := io.ReadAll(r)
 	os.Stdout = stdout
 	if err != nil {
 		return "", err

cmd/argocd/commands/context.go

@@ -2,7 +2,6 @@ package commands
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"strings"
@@ -50,7 +49,7 @@ func NewContextCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
 			prevCtxFile := path.Join(argoCDDir, ".prev-ctx")
 
 			if ctxName == "-" {
-				prevCtxBytes, err := ioutil.ReadFile(prevCtxFile)
+				prevCtxBytes, err := os.ReadFile(prevCtxFile)
 				errors.CheckError(err)
 				ctxName = string(prevCtxBytes)
 			}
@@ -66,7 +65,7 @@ func NewContextCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
 
 			err = localconfig.WriteLocalConfig(*localCfg, clientOpts.ConfigPath)
 			errors.CheckError(err)
-			err = ioutil.WriteFile(prevCtxFile, []byte(prevCtx), 0644)
+			err = os.WriteFile(prevCtxFile, []byte(prevCtx), 0644)
 			errors.CheckError(err)
 			fmt.Printf("Switched to context '%s'\n", localCfg.CurrentContext)
 		},

cmd/argocd/commands/context_test.go

@@ -1,7 +1,6 @@
 package commands
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -40,7 +39,7 @@ const testConfigFilePath = "./testdata/local.config"
 
 func TestContextDelete(t *testing.T) {
 	// Write the test config file
-	err := ioutil.WriteFile(testConfigFilePath, []byte(testConfig), os.ModePerm)
+	err := os.WriteFile(testConfigFilePath, []byte(testConfig), os.ModePerm)
 	assert.NoError(t, err)
 	defer os.Remove(testConfigFilePath)
 

cmd/argocd/commands/gpg.go

@@ -2,7 +2,6 @@ package commands
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 	"text/tabwriter"
@@ -116,7 +115,7 @@ func NewGPGAddCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
 			if fromFile == "" {
 				errors.CheckError(fmt.Errorf("--from is mandatory"))
 			}
-			keyData, err := ioutil.ReadFile(fromFile)
+			keyData, err := os.ReadFile(fromFile)
 			if err != nil {
 				errors.CheckError(err)
 			}

cmd/argocd/commands/logout_test.go

@@ -1,7 +1,6 @@
 package commands
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -15,7 +14,7 @@ import (
 func TestLogout(t *testing.T) {
 
 	// Write the test config file
-	err := ioutil.WriteFile(testConfigFilePath, []byte(testConfig), os.ModePerm)
+	err := os.WriteFile(testConfigFilePath, []byte(testConfig), os.ModePerm)
 	assert.NoError(t, err)
 	defer os.Remove(testConfigFilePath)
 

cmd/argocd/commands/repo.go

@@ -2,7 +2,6 @@ package commands
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"text/tabwriter"
 
@@ -91,7 +90,7 @@ func NewRepoAddCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
 			// Specifying ssh-private-key-path is only valid for SSH repositories
 			if repoOpts.SshPrivateKeyPath != "" {
 				if ok, _ := git.IsSSHURL(repoOpts.Repo.Repo); ok {
-					keyData, err := ioutil.ReadFile(repoOpts.SshPrivateKeyPath)
+					keyData, err := os.ReadFile(repoOpts.SshPrivateKeyPath)
 					if err != nil {
 						log.Fatal(err)
 					}
@@ -112,9 +111,9 @@ func NewRepoAddCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
 			// Specifying tls-client-cert-path is only valid for HTTPS repositories
 			if repoOpts.TlsClientCertPath != "" {
 				if git.IsHTTPSURL(repoOpts.Repo.Repo) {
-					tlsCertData, err := ioutil.ReadFile(repoOpts.TlsClientCertPath)
+					tlsCertData, err := os.ReadFile(repoOpts.TlsClientCertPath)
 					errors.CheckError(err)
-					tlsCertKey, err := ioutil.ReadFile(repoOpts.TlsClientCertKeyPath)
+					tlsCertKey, err := os.ReadFile(repoOpts.TlsClientCertKeyPath)
 					errors.CheckError(err)
 					repoOpts.Repo.TLSClientCertData = string(tlsCertData)
 					repoOpts.Repo.TLSClientCertKey = string(tlsCertKey)
@@ -127,7 +126,7 @@ func NewRepoAddCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
 			// Specifying github-app-private-key-path is only valid for HTTPS repositories
 			if repoOpts.GithubAppPrivateKeyPath != "" {
 				if git.IsHTTPSURL(repoOpts.Repo.Repo) {
-					githubAppPrivateKey, err := ioutil.ReadFile(repoOpts.GithubAppPrivateKeyPath)
+					githubAppPrivateKey, err := os.ReadFile(repoOpts.GithubAppPrivateKeyPath)
 					errors.CheckError(err)
 					repoOpts.Repo.GithubAppPrivateKey = string(githubAppPrivateKey)
 				} else {