锁机制处理类

<?php


namespace app\common\library;

use think\Cache;
use think\Exception;

/**
 * 锁机制
 */
class Lock
{

    public function run($callback, $key, $expire = 10)
    {
        try {
            if (Cache::store('redis')->has($key)) {
                throw new LockException('已锁定');
            }
            $this->getLock($key, 1, $expire);
            $result = null;
            if (is_callable($callback)) {
                $result = call_user_func_array($callback, [$this]);
            }
            $this->unLock($key);
            return $result;
        } catch (LockException $e) {
            throw $e;
        } catch (\Exception $e) {
            $this->unLock($key);
            throw $e;
        } catch (\Throwable $e) {
            $this->unLock($key);
            throw $e;
        }
    }

    /**
     * 获取锁
     * @param $name
     * @param $key
     * @param int $expire
     * @return bool
     */
    public function getLock($name, $key, $expire = 5)
    {
        if (Cache::store('redis')->has($name)) {

            return false;
        }
        return Cache::store('redis')->set($name, $key, $expire);
    }

    /**
     * 释放锁
     * @param $name
     */
    public function unLock($name)
    {
        Cache::store('redis')->rm($name);
    }
}

class LockException extends Exception{ }

调用：

  try {
       $result = (new Lock)->run(function () use () {
            　　// code
            　　return true;
        　　}
        }, $key, 10);
    } catch (Exception $e) {
        return false;
    }