Remove ioutil.

cmd/account/import/input.go

@@ -16,7 +16,7 @@ package accountimport
 import (
 	"context"
 	"encoding/hex"
-	"io/ioutil"
+	"os"
 	"strings"
 	"time"
 
@@ -115,7 +115,7 @@ func obtainKeystore(input string) ([]byte, error) {
 		data = []byte(input)
 	} else {
 		// Assume it's a path to JSON
-		data, err = ioutil.ReadFile(input)
+		data, err = os.ReadFile(input)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to find deposit data file")
 		}

cmd/depositverify.go

@@ -1,4 +1,4 @@
-// Copyright © 2019-2021 Weald Technology Limited.
+// Copyright © 2019-2022 Weald Technology Limited.
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -17,7 +17,6 @@ import (
 	"bytes"
 	"encoding/hex"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -64,7 +63,7 @@ In quiet mode this will return 0 if the the data is verified correctly, otherwis
 			data = []byte(depositVerifyData)
 		default:
 			// Assume it's a path to JSON.
-			data, err = ioutil.ReadFile(depositVerifyData)
+			data, err = os.ReadFile(depositVerifyData)
 			errCheck(err, "Failed to read deposit data file")
 			if data[0] == '{' {
 				data = []byte("[" + string(data) + "]")
@@ -155,7 +154,7 @@ func validatorPubKeysFromInput(input string) (map[[48]byte]bool, error) {
 		pubKeys[key] = true
 	} else {
 		// Assume it's a path to a file of public keys.
-		data, err = ioutil.ReadFile(input)
+		data, err = os.ReadFile(input)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to find public key file")
 		}

cmd/exitverify.go

@@ -1,4 +1,4 @@
-// Copyright © 2020 Weald Technology Trading
+// Copyright © 2020, 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -19,7 +19,6 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -97,7 +96,7 @@ func obtainExitData(input string) (*util.ValidatorExitData, error) {
 		data = []byte(input)
 	} else {
 		// Assume it's a path to JSON
-		data, err = ioutil.ReadFile(input)
+		data, err = os.ReadFile(input)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to find deposit data file")
 		}

cmd/validatorinfo.go

@@ -18,7 +18,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"strconv"
@@ -125,7 +125,7 @@ func graphData(network string, validatorPubKey []byte) (uint64, spec.Gwei, error
 		return 0, 0, errors.Wrap(err, "failed to check if there is already a deposit for this validator")
 	}
 	defer graphResp.Body.Close()
-	body, err := ioutil.ReadAll(graphResp.Body)
+	body, err := io.ReadAll(graphResp.Body)
 	if err != nil {
 		return 0, 0, errors.Wrap(err, "bad information returned from existing deposit check")
 	}

cmd/wallet/delete/process_internal_test.go

@@ -15,7 +15,6 @@ package walletdelete
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -31,7 +30,7 @@ import (
 func TestProcess(t *testing.T) {
 	require.NoError(t, e2types.InitBLS())
 
-	base, err := ioutil.TempDir("", "")
+	base, err := os.MkdirTemp("", "")
 	require.NoError(t, err)
 	defer os.RemoveAll(base)
 	store := filesystem.New(filesystem.WithLocation(base))

cmd/wallet/export/process_internal_test.go

@@ -15,7 +15,6 @@ package walletexport
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -31,7 +30,7 @@ import (
 func TestProcess(t *testing.T) {
 	require.NoError(t, e2types.InitBLS())
 
-	base, err := ioutil.TempDir("", "")
+	base, err := os.MkdirTemp("", "")
 	require.NoError(t, err)
 	defer os.RemoveAll(base)
 	store := filesystem.New(filesystem.WithLocation(base))

cmd/wallet/import/input.go

@@ -16,7 +16,7 @@ package walletimport
 import (
 	"context"
 	"encoding/hex"
-	"io/ioutil"
+	"os"
 	"strings"
 	"time"
 
@@ -58,7 +58,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	}
 	if !strings.HasPrefix(viper.GetString("data"), "0x") {
 		// Assume this is a path; read the file and replace the path with its contents.
-		fileData, err := ioutil.ReadFile(viper.GetString("data"))
+		fileData, err := os.ReadFile(viper.GetString("data"))
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to read wallet import data")
 		}

cmd/wallet/sharedexport/process_internal_test.go

@@ -1,4 +1,4 @@
-// Copyright © 2021 Weald Technology Trading
+// Copyright © 2021, 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -15,7 +15,6 @@ package walletsharedexport
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -31,7 +30,7 @@ import (
 func TestProcess(t *testing.T) {
 	require.NoError(t, e2types.InitBLS())
 
-	base, err := ioutil.TempDir("", "")
+	base, err := os.MkdirTemp("", "")
 	require.NoError(t, err)
 	defer os.RemoveAll(base)
 	store := filesystem.New(filesystem.WithLocation(base))

cmd/wallet/sharedimport/input.go

@@ -1,4 +1,4 @@
-// Copyright © 2021 Weald Technology Trading
+// Copyright © 2021, 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -15,7 +15,7 @@ package walletsharedimport
 
 import (
 	"context"
-	"io/ioutil"
+	"os"
 	"time"
 
 	"github.com/pkg/errors"
@@ -52,7 +52,7 @@ func input(ctx context.Context) (*dataIn, error) {
 	if viper.GetString("file") == "" {
 		return nil, errors.New("file is required")
 	}
-	data.file, err = ioutil.ReadFile(viper.GetString("file"))
+	data.file, err = os.ReadFile(viper.GetString("file"))
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to read wallet import file")
 	}

cmd/wallet/sharedimport/input_internal_test.go

@@ -1,4 +1,4 @@
-// Copyright © 2021 Weald Technology Trading
+// Copyright © 2021, 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -16,7 +16,6 @@ package walletsharedimport
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -38,7 +37,7 @@ func TestInput(t *testing.T) {
 	dir, err := os.MkdirTemp("", "")
 	require.NoError(t, err)
 	datFile := filepath.Join(dir, "backup.dat")
-	require.NoError(t, ioutil.WriteFile(datFile, []byte("dummy"), 0600))
+	require.NoError(t, os.WriteFile(datFile, []byte("dummy"), 0600))
 	defer os.RemoveAll(dir)
 
 	store := scratch.New()

cmd/wallet/sharedimport/process_internal_test.go

@@ -1,4 +1,4 @@
-// Copyright © 2021 Weald Technology Trading
+// Copyright © 2021, 2022 Weald Technology Trading
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -15,7 +15,6 @@ package walletsharedimport
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -40,7 +39,7 @@ func TestProcess(t *testing.T) {
 	dir, err := os.MkdirTemp("", "")
 	require.NoError(t, err)
 	datFile := filepath.Join(dir, "backup.dat")
-	require.NoError(t, ioutil.WriteFile(datFile, export, 0600))
+	require.NoError(t, os.WriteFile(datFile, export, 0600))
 	defer os.RemoveAll(dir)
 
 	tests := []struct {