fix: use of ioutil package (#5261)

* fix ioutil.NopCloser

* fix ioutil.ReadAll

* fix ioutil.ReadFile

* fix ioutil.WriteFile

* run goimports -w -format-only ./

* update CHANGELOG.md

core/config/env/env.go

@@ -19,7 +19,6 @@ package env
 import (
 	"fmt"
 	"go/build"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -119,7 +118,7 @@ func GetRuntimeEnv(key string) (string, error) {
 	}
 
 	var runtimeEnv string
-	data, err := ioutil.ReadFile(file)
+	data, err := os.ReadFile(file)
 	if err != nil {
 		return "", err
 	}

core/config/ini.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"errors"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -54,7 +53,7 @@ func (ini *IniConfig) Parse(name string) (Configer, error) {
 }
 
 func (ini *IniConfig) parseFile(name string) (*IniConfigContainer, error) {
-	data, err := ioutil.ReadFile(name)
+	data, err := os.ReadFile(name)
 	if err != nil {
 		return nil, err
 	}

core/config/ini_test.go

@@ -16,7 +16,6 @@ package config
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 	"testing"
@@ -173,7 +172,7 @@ name=mysql
 	}
 	defer os.Remove(name)
 
-	if data, err := ioutil.ReadFile(name); err != nil {
+	if data, err := os.ReadFile(name); err != nil {
 		t.Fatal(err)
 	} else {
 		cfgData := string(data)

core/config/json/json.go

@@ -18,7 +18,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"strconv"
 	"strings"
@@ -40,7 +40,7 @@ func (js *JSONConfig) Parse(filename string) (config.Configer, error) {
 		return nil, err
 	}
 	defer file.Close()
-	content, err := ioutil.ReadAll(file)
+	content, err := io.ReadAll(file)
 	if err != nil {
 		return nil, err
 	}

core/config/toml/toml.go

@@ -15,7 +15,6 @@
 package toml
 
 import (
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -32,7 +31,7 @@ type Config struct {
 
 // Parse accepts filename as the parameter
 func (c *Config) Parse(filename string) (config.Configer, error) {
-	ctx, err := ioutil.ReadFile(filename)
+	ctx, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, err
 	}

core/config/xml/xml.go

@@ -32,7 +32,6 @@ import (
 	"encoding/xml"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
@@ -53,7 +52,7 @@ type Config struct{}
 
 // Parse returns a ConfigContainer with parsed xml config map.
 func (xc *Config) Parse(filename string) (config.Configer, error) {
-	context, err := ioutil.ReadFile(filename)
+	context, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, err
 	}

core/config/yaml/yaml.go

@@ -26,7 +26,6 @@ package yaml
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 	"sync"
@@ -66,7 +65,7 @@ func (*Config) ParseData(data []byte) (config.Configer, error) {
 
 // ReadYmlReader Read yaml file to map.
 func ReadYmlReader(path string) (cnf map[string]interface{}, err error) {
-	buf, err := ioutil.ReadFile(path)
+	buf, err := os.ReadFile(path)
 	if err != nil {
 		return
 	}