package utils

import (
	"github.com/jaryhe/gopkgs/cache"
	"time"
)

const Prefix = "lock"
// interval try lock时间间隔 ms， tryCount try lock 的次数
func RedisLock(key string, interval int, tryCount int) (bool, error) {
	if interval <= 0 {
		interval = 500
	}
	if tryCount <= 0 {
		tryCount = 10
	}
	key = Prefix+"-"+key
	for i := 0; i < tryCount; i++ {
		ok, err := cache.Redis().SetNxEx(key, "-", 10)
		if err != nil {
			return false, err
		}
		if ok {
			return true, nil
		}
		time.Sleep(time.Duration(interval)*time.Microsecond)
	}
	return false, nil
}

func RedisUnlock(key string) error {
	key = Prefix+"-"+key
	_, err := cache.Redis().Del(key)
	return err
}