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Fix concurrent accesses

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This commit is contained in:
Ingo Oppermann
2024-03-15 11:45:50 +01:00
parent f987d5d577
commit 9d8d59c4a2
1 changed files with 8 additions and 2 deletions
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10
math/rand/rand.go
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@@ -4,6 +4,7 @@ package rand
import ( import (
"math/rand" "math/rand"
"sync"
"time" "time"
) )
@@ -12,12 +13,17 @@ const (
CharsetNumbers = "1234567890" CharsetNumbers = "1234567890"
CharsetSymbols = "#@+*%&/<>[]()=?!$.,:;-_" CharsetSymbols = "#@+*%&/<>[]()=?!$.,:;-_"
CharsetAll = CharsetLetters + CharsetNumbers + CharsetSymbols CharsetAlphanumeric = CharsetLetters + CharsetNumbers
CharsetAll = CharsetLetters + CharsetNumbers + CharsetSymbols
) )
var seededRand *rand.Rand = rand.New(rand.NewSource(time.Now().UnixNano())) var seededRand *rand.Rand = rand.New(rand.NewSource(time.Now().UnixNano()))
var lock sync.Mutex
func StringWithCharset(length int, charset string) string { func StringWithCharset(length int, charset string) string {
lock.Lock()
defer lock.Unlock()
b := make([]byte, length) b := make([]byte, length)
for i := range b { for i := range b {
b[i] = charset[seededRand.Intn(len(charset))] b[i] = charset[seededRand.Intn(len(charset))]
@@ -35,7 +41,7 @@ func StringNumbers(length int) string {
} }
func StringAlphanumeric(length int) string { func StringAlphanumeric(length int) string {
return StringWithCharset(length, CharsetLetters+CharsetNumbers) return StringWithCharset(length, CharsetAlphanumeric)
} }
func String(length int) string { func String(length int) string {