73 lines
1.5 KiB
PHP
73 lines
1.5 KiB
PHP
<?php
|
|
|
|
namespace App\Cache\Repository;
|
|
|
|
use App\Cache\Contracts\LockRedisInterface;
|
|
|
|
/**
|
|
* Redis Lock
|
|
*
|
|
* @package App\Cache\Repository
|
|
*/
|
|
class LockRedis extends AbstractRedis implements LockRedisInterface
|
|
{
|
|
protected $prefix = 'rds-lock';
|
|
|
|
protected $lockValue = 1;
|
|
|
|
/**
|
|
* 获取是毫秒时间戳
|
|
*
|
|
* @return int
|
|
*/
|
|
private function time()
|
|
{
|
|
return intval(microtime(true) * 1000);
|
|
}
|
|
|
|
/**
|
|
* 获取 Redis 锁
|
|
*
|
|
* @param string $key 锁标识
|
|
* @param int $lockTime 过期时间/秒
|
|
* @param int $timeout 获取超时/毫秒
|
|
* @return bool
|
|
*/
|
|
public function lock(string $key, $lockTime = 1, $timeout = 0)
|
|
{
|
|
$lockName = $this->getCacheKey($key);
|
|
|
|
$start = $this->time();
|
|
do {
|
|
$lock = $this->redis()->set($lockName, $this->lockValue, ['nx', 'ex' => $lockTime]);
|
|
if ($lock || $timeout === 0) {
|
|
break;
|
|
}
|
|
|
|
// 默认 0.1 秒一次取锁
|
|
usleep(100000);
|
|
} while ($this->time() < $start + $timeout);
|
|
|
|
return $lock;
|
|
}
|
|
|
|
/**
|
|
* 释放 Redis 锁
|
|
*
|
|
* @param string $key
|
|
* @return mixed
|
|
*/
|
|
public function delete(string $key)
|
|
{
|
|
$script = <<<LAU
|
|
if redis.call("GET", KEYS[1]) == ARGV[1] then
|
|
return redis.call("DEL", KEYS[1])
|
|
else
|
|
return 0
|
|
end
|
|
LAU;
|
|
|
|
return $this->redis()->eval($script, [$this->getCacheKey($key), $this->lockValue], 1);
|
|
}
|
|
}
|