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<?php
namespace Illuminate\Queue\Middleware;
use Illuminate\Container\Container;
use Illuminate\Contracts\Redis\Factory as Redis;
use Illuminate\Redis\Limiters\DurationLimiter;
use Illuminate\Support\InteractsWithTime;
class RateLimitedWithRedis extends RateLimited
{
use InteractsWithTime;
/**
* The Redis factory implementation.
*
* @var \Illuminate\Contracts\Redis\Factory
*/
protected $redis;
/**
* The timestamp of the end of the current duration by key.
*
* @var array
*/
public $decaysAt = [];
/**
* Create a new middleware instance.
*
* @param string $limiterName
* @return void
*/
public function __construct($limiterName)
{
parent::__construct($limiterName);
$this->redis = Container::getInstance()->make(Redis::class);
}
/**
* Handle a rate limited job.
*
* @param mixed $job
* @param callable $next
* @param array $limits
* @return mixed
*/
protected function handleJob($job, $next, array $limits)
{
foreach ($limits as $limit) {
if ($this->tooManyAttempts($limit->key, $limit->maxAttempts, $limit->decayMinutes)) {
return $this->shouldRelease
? $job->release($this->getTimeUntilNextRetry($limit->key))
: false;
}
}
return $next($job);
}
/**
* Determine if the given key has been "accessed" too many times.
*
* @param string $key
* @param int $maxAttempts
* @param int $decayMinutes
* @return bool
*/
protected function tooManyAttempts($key, $maxAttempts, $decayMinutes)
{
$limiter = new DurationLimiter(
$this->redis, $key, $maxAttempts, $decayMinutes * 60
);
return tap(! $limiter->acquire(), function () use ($key, $limiter) {
$this->decaysAt[$key] = $limiter->decaysAt;
});
}
/**
* Get the number of seconds that should elapse before the job is retried.
*
* @param string $key
* @return int
*/
protected function getTimeUntilNextRetry($key)
{
return ($this->decaysAt[$key] - $this->currentTime()) + 3;
}
/**
* Prepare the object after unserialization.
*
* @return void
*/
public function __wakeup()
{
parent::__wakeup();
$this->redis = Container::getInstance()->make(Redis::class);
}
}