lint: drop ioutil to fix linting errors

e2e/_suites/fleet/system_integration.go

@@ -7,7 +7,6 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -222,7 +221,7 @@ func readJSONFile(file string) (*gabs.Container, error) {
 	}).Info("Successfully Opened " + file)
 
 	defer jsonFile.Close()
-	data, err := ioutil.ReadAll(jsonFile)
+	data, err := os.ReadAll(jsonFile)
 	if err != nil {
 		return nil, err
 	}

e2e/_suites/kubernetes-autodiscover/autodiscover_test.go

@@ -10,7 +10,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -349,7 +348,7 @@ func (m *podsManager) waitForEventsCondition(podName string, conditionFn func(ct
 		return fmt.Errorf("failed to get pod name: %w", err)
 	}
 
-	tmpDir, err := ioutil.TempDir(os.TempDir(), "test-")
+	tmpDir, err := os.MkdirTemp(os.TempDir(), "test-")
 	if err != nil {
 		return fmt.Errorf("failed to create temporary directory: %w", err)
 	}

internal/config/config.go

@@ -6,7 +6,6 @@ package config
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -287,7 +286,7 @@ func extractProfileServiceConfig(op *OpConfig, box *packr.Box) error {
 			"dir":  dir,
 		}).Trace("Extracting boxed file")
 
-		return ioutil.WriteFile(p, []byte(file.String()), 0644)
+		return os.WriteFile(p, []byte(file.String()), 0644)
 	}
 
 	if err := box.Walk(walkFn); err != nil {

internal/curl/curl.go

@@ -8,7 +8,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 
@@ -126,7 +125,7 @@ func request(r HTTPRequest) (string, error) {
 	}
 	defer resp.Body.Close()
 
-	bodyBytes, err := ioutil.ReadAll(resp.Body)
+	bodyBytes, err := io.ReadAll(resp.Body)
 	if err != nil {
 		log.WithFields(log.Fields{
 			"error":      err,

internal/deploy/docker_client.go

@@ -14,7 +14,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -63,7 +62,7 @@ func buildTarForDeployment(file *os.File) (bytes.Buffer, error) {
 		return bytes.Buffer{}, fmt.Errorf("could not build TAR header: %v", err)
 	}
 
-	b, err := ioutil.ReadFile(file.Name())
+	b, err := os.ReadFile(file.Name())
 	if err != nil {
 		return bytes.Buffer{}, err
 	}
@@ -128,7 +127,7 @@ func CopyFileToContainer(ctx context.Context, containerName string, srcPath stri
 		}
 	} else {
 		writer := bufio.NewWriter(&buffer)
-		b, err := ioutil.ReadFile(file.Name())
+		b, err := os.ReadFile(file.Name())
 		if err != nil {
 			return err
 		}
@@ -249,7 +248,7 @@ func ExecCommandIntoContainerWithEnv(ctx context.Context, container string, user
 		return "", ctx.Err()
 	}
 
-	stdout, err := ioutil.ReadAll(&outBuf)
+	stdout, err := io.ReadAll(&outBuf)
 	if err != nil {
 		log.WithFields(log.Fields{
 			"container": containerName,
@@ -261,7 +260,7 @@ func ExecCommandIntoContainerWithEnv(ctx context.Context, container string, user
 		}).Error("Could not parse stdout from container")
 		return "", err
 	}
-	stderr, err := ioutil.ReadAll(&errBuf)
+	stderr, err := io.ReadAll(&errBuf)
 	if err != nil {
 		log.WithFields(log.Fields{
 			"container": containerName,

internal/io/io.go

@@ -7,7 +7,7 @@ package io
 import (
 	"errors"
 	"io"
-	"io/ioutil"
+	"io/fs"
 	"os"
 	"path/filepath"
 
@@ -40,7 +40,7 @@ func CopyDir(src string, dst string) error {
 		return err
 	}
 
-	entries, err := ioutil.ReadDir(src)
+	entries, err := os.ReadDir(src)
 	if err != nil {
 		return err
 	}
@@ -56,7 +56,7 @@ func CopyDir(src string, dst string) error {
 			}
 		} else {
 			// Skip symlinks.
-			if entry.Mode()&os.ModeSymlink != 0 {
+			if entry.Type()&os.ModeSymlink != 0 {
 				continue
 			}
 
@@ -166,21 +166,21 @@ func FindFiles(pattern string) []string {
 }
 
 // ReadDir lists the contents of a directory
-func ReadDir(path string) ([]os.FileInfo, error) {
-	files, err := ioutil.ReadDir(path)
+func ReadDir(path string) ([]fs.DirEntry, error) {
+	files, err := os.ReadDir(path)
 	if err != nil {
 		log.WithFields(log.Fields{
 			"path": path,
 		}).Warn("Could not read file system")
-		return []os.FileInfo{}, err
+		return []fs.DirEntry{}, err
 	}
 
 	return files, nil
 }
 
 // ReadFile returns the byte array representing a file
 func ReadFile(path string) ([]byte, error) {
-	bytes, err := ioutil.ReadFile(path)
+	bytes, err := os.ReadFile(path)
 	if err != nil {
 		log.WithFields(log.Fields{
 			"path": path,
@@ -193,7 +193,7 @@ func ReadFile(path string) ([]byte, error) {
 
 // WriteFile writes bytes into target
 func WriteFile(bytes []byte, target string) error {
-	err := ioutil.WriteFile(target, bytes, 0755)
+	err := os.WriteFile(target, bytes, 0755)
 	if err != nil {
 		log.WithFields(log.Fields{
 			"target": target,

internal/kibana/client.go

@@ -8,7 +8,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 
@@ -113,7 +113,7 @@ func (c *Client) sendRequest(ctx context.Context, method, resourcePath string, b
 	}
 
 	defer resp.Body.Close()
-	body, err = ioutil.ReadAll(resp.Body)
+	body, err = io.ReadAll(resp.Body)
 	if err != nil {
 		return resp.StatusCode, nil, errors.Wrap(err, "could not read response body")
 	}

internal/kubernetes/kubernetes.go

@@ -8,7 +8,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -159,7 +158,7 @@ func (c *Cluster) Initialize(ctx context.Context, kindConfigPath string) error {
 	}
 	log.Infof("Using %s", kindVersion)
 
-	c.tmpDir, err = ioutil.TempDir(os.TempDir(), "test-")
+	c.tmpDir, err = os.MkdirTemp(os.TempDir(), "test-")
 	if err != nil {
 		log.WithError(err).Fatal("Failed to create temporary directory")
 	}

pkg/downloads/versions_test.go

@@ -6,7 +6,6 @@ package downloads
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"path"
 	"testing"
@@ -32,19 +31,19 @@ var commitsJSON *gabs.Container
 var snapshotsJSON *gabs.Container
 
 func init() {
-	nextTokenParamContent, err := ioutil.ReadFile(path.Join(testResourcesBasePath, "gcp", "nextPageParam.json"))
+	nextTokenParamContent, err := os.ReadFile(path.Join(testResourcesBasePath, "gcp", "nextPageParam.json"))
 	if err != nil {
 		os.Exit(1)
 	}
 	nextTokenParamJSON, _ = gabs.ParseJSON([]byte(nextTokenParamContent))
 
-	commitsContent, err := ioutil.ReadFile(path.Join(testResourcesBasePath, "gcp", "commits.json"))
+	commitsContent, err := os.ReadFile(path.Join(testResourcesBasePath, "gcp", "commits.json"))
 	if err != nil {
 		os.Exit(1)
 	}
 	commitsJSON, _ = gabs.ParseJSON([]byte(commitsContent))
 
-	snapshotsContent, err := ioutil.ReadFile(path.Join(testResourcesBasePath, "gcp", "snapshots.json"))
+	snapshotsContent, err := os.ReadFile(path.Join(testResourcesBasePath, "gcp", "snapshots.json"))
 	if err != nil {
 		os.Exit(1)
 	}