refactor: remove deprecated usages of ioutil (dep 1.16) for replacements

Author: gsdevme

internal/app/gitops-commit/slackhttp/manifest.go

@@ -3,7 +3,7 @@ package slackhttp
 import (
 	"fmt"
 	"gopkg.in/yaml.v3"
-	"io/ioutil"
+	"os"
 )
 
 type Manifest struct {
@@ -29,7 +29,7 @@ func LoadManifest(f string) (*Manifest, error) {
 		registry: NewNamedRepositoryRegistry(),
 	}
 
-	d, err := ioutil.ReadFile(f)
+	d, err := os.ReadFile(f)
 
 	if err != nil {
 		return nil, fmt.Errorf("cannot read yaml file: %w", err)

internal/app/gitops-commit/slackhttp/middleware.go

@@ -4,7 +4,6 @@ import (
 	"github.com/google/martian/log"
 	"github.com/slack-go/slack"
 	"io"
-	"io/ioutil"
 	"net/http"
 )
 
@@ -17,7 +16,7 @@ func (s *server) SlackCommandMiddleware(next func(w http.ResponseWriter, s slack
 			return
 		}
 
-		r.Body = ioutil.NopCloser(io.TeeReader(r.Body, &verifier))
+		r.Body = io.NopCloser(io.TeeReader(r.Body, &verifier))
 		s, err := slack.SlashCommandParse(r)
 		if err != nil {
 			w.WriteHeader(http.StatusInternalServerError)

internal/pkg/gitops/git.go

@@ -5,7 +5,6 @@ import (
 	"github.com/go-git/go-git/v5"
 	"github.com/go-git/go-git/v5/plumbing/object"
 	"github.com/go-git/go-git/v5/plumbing/transport/ssh"
-	"io/ioutil"
 	"os"
 	"time"
 )
@@ -19,7 +18,7 @@ type GitOptions struct {
 }
 
 func NewGitOptions(keys *ssh.PublicKeys) (*GitOptions, func(), error) {
-	dir, err := ioutil.TempDir("/tmp", "prefix")
+	dir, err := os.MkdirTemp("/tmp", "prefix")
 	if err != nil {
 		return nil, nil, err
 	}

internal/pkg/gitops/handler.go

@@ -2,7 +2,7 @@ package gitops
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 )
 
 type DeployVersionCommand struct {
@@ -23,7 +23,7 @@ func DeployVersionHandler(c DeployVersionCommand) error {
 
 	filename := fmt.Sprintf("%s/%s", c.GitOptions.WorkingDirectory, c.File)
 
-	f, err := ioutil.ReadFile(filename)
+	f, err := os.ReadFile(filename)
 
 	if err != nil {
 		return fmt.Errorf("cannot read file: %w", err)

internal/pkg/gitops/version.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"gopkg.in/yaml.v3"
-	"io/ioutil"
+	"os"
 	"regexp"
 	"strconv"
 	"strings"
@@ -32,7 +32,7 @@ func ReadCurrentVersion(f []byte, notation string) (string, error) {
 
 func WriteVersion(f []byte, version string, newVersion string, filename string) error {
 	output := bytes.Replace(f, []byte(version), []byte(newVersion), -1)
-	err := ioutil.WriteFile(filename, output, 0666)
+	err := os.WriteFile(filename, output, 0666)
 
 	if err != nil {
 		return fmt.Errorf("cannot replace version: %w", err)