64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
package utils
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import (
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"fmt"
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"math/rand"
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"runtime/debug"
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"strings"
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"time"
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"videoweb/pub/common/log"
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"golang.org/x/exp/constraints"
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)
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func RecoverError(onError func(err error)) {
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if r := recover(); r != nil {
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err := fmt.Errorf("internal error: %v", r)
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if onError != nil {
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onError(err)
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}
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log.Error(fmt.Sprintf("[Panic] RecoverError err: %+v\n", r) + string(debug.Stack()))
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}
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}
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func GetRandom(min, max int) int64 {
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rand.Seed(time.Now().UnixNano())
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return int64(rand.Intn(max-min+1) + min)
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}
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func EnsureRange[T constraints.Ordered](value, min, max T) T {
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if value < min {
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value = min
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}
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if value > max {
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value = max
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}
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return value
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}
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func InRange[T constraints.Ordered](value, min, max T) bool {
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if value < min {
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return false
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}
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if value > max {
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return false
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}
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return true
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}
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// Shuffle 使用 Fisher-Yates 算法对切片进行随机排序
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func Shuffle[T any](slice []T) {
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rand.Seed(time.Now().UnixNano())
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n := len(slice)
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for i := n - 1; i > 0; i-- {
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j := rand.Intn(i + 1)
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slice[i], slice[j] = slice[j], slice[i]
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}
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}
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func GetRandomMacAddress() string {
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buf := make([]byte, 6)
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rand.Read(buf)
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buf[0] |= 2
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mac := fmt.Sprintf("%02x:%02x:%02x:%02x:%02x:%02x", buf[0], buf[1], buf[2], buf[3], buf[4], buf[5])
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return strings.ToUpper(mac)
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}
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