52 lines
1.5 KiB
PHP
52 lines
1.5 KiB
PHP
<?php
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namespace app\common\middleware;
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use app\common\repositories\system\auth\MenuRepository;
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use app\common\repositories\system\auth\RoleRepository;
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use app\Request;
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use Doctrine\Common\Cache\RedisCache;
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use http\Exception\InvalidArgumentException;
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use think\facade\Cache;
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use think\Response;
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class BlockerMiddleware extends BaseMiddleware
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{
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protected $key;
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public function before(Request $request)
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{
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$uid = request()->uid();
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$this->key = md5(request()->rule()->getRule() . $uid);
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if (!$this->setMutex($this->key)) {
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throw new InvalidArgumentException('请求太过频繁，请稍后再试');
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}
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}
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public function setMutex(string $key, int $timeout = 10)
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{
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$curTime = time();
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$readMutexKey = "redis:mutex:{$key}";
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$mutexRes = Cache::store('redis')->handler()->setnx($readMutexKey, $curTime + $timeout);
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if ($mutexRes) {
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return true;
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}
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//就算意外退出，下次进来也会检查key，防止死锁
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$time = Cache::store('redis')->handler()->get($readMutexKey);
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if ($curTime > $time) {
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Cache::store('redis')->handler()->del($readMutexKey);
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return Cache::store('redis')->handler()->setnx($readMutexKey, $curTime + $timeout);
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}
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return false;
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}
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public function after(Response $response)
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{
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Cache::store('redis')->handler()->del("redis:mutex:{$this->key}");
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// TODO: Implement after() method.
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}
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}
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