From 2c3a89339d50929bb1476aa9949a8fec7709c29c Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Mon, 22 Aug 2022 00:02:19 +0300
Subject: [PATCH] all: use os.ReadDir instead of ioutil.ReadDir

The ioutil.ReadDir is deprecated since Go1.16 - see https://tip.golang.org/doc/go1.16#ioutil
VictoriaMetrics requires at least Go1.18, so it is time to switch from io.ReadDir to os.ReadDir

This is a follow-up for 02ca2342ab01627eb5fdbb3174792b86fc1de7a9
---
 lib/fs/fs.go                           | 10 +++++-----
 lib/persistentqueue/persistentqueue.go |  9 ++++-----
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/lib/fs/fs.go b/lib/fs/fs.go
index 8dd6d008b..c638028a2 100644
--- a/lib/fs/fs.go
+++ b/lib/fs/fs.go
@@ -269,20 +269,20 @@ func SymlinkRelative(srcPath, dstPath string) error {
 
 // CopyDirectory copies all the files in srcPath to dstPath.
 func CopyDirectory(srcPath, dstPath string) error {
-	fis, err := ioutil.ReadDir(srcPath)
+	des, err := os.ReadDir(srcPath)
 	if err != nil {
 		return err
 	}
 	if err := MkdirAllIfNotExist(dstPath); err != nil {
 		return err
 	}
-	for _, fi := range fis {
-		if !fi.Mode().IsRegular() {
+	for _, de := range des {
+		if !de.Type().IsRegular() {
 			// Skip non-files
 			continue
 		}
-		src := filepath.Join(srcPath, fi.Name())
-		dst := filepath.Join(dstPath, fi.Name())
+		src := filepath.Join(srcPath, de.Name())
+		dst := filepath.Join(dstPath, de.Name())
 		if err := copyFile(src, dst); err != nil {
 			return err
 		}
diff --git a/lib/persistentqueue/persistentqueue.go b/lib/persistentqueue/persistentqueue.go
index 6351b49aa..31a17f171 100644
--- a/lib/persistentqueue/persistentqueue.go
+++ b/lib/persistentqueue/persistentqueue.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"regexp"
 	"strconv"
@@ -221,14 +220,14 @@ func tryOpeningQueue(path, name string, chunkFileSize, maxBlockSize, maxPendingB
 	}
 
 	// Locate reader and writer chunks in the path.
-	fis, err := ioutil.ReadDir(path)
+	des, err := os.ReadDir(path)
 	if err != nil {
 		return nil, fmt.Errorf("cannot read contents of the directory %q: %w", path, err)
 	}
-	for _, fi := range fis {
-		fname := fi.Name()
+	for _, de := range des {
+		fname := de.Name()
 		filepath := path + "/" + fname
-		if fi.IsDir() {
+		if de.IsDir() {
 			logger.Errorf("skipping unknown directory %q", filepath)
 			continue
 		}