Waiter.php
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<?php
declare(strict_types=1);
/**
* This file is part of Hyperf.
*
* @link https://www.hyperf.io
* @document https://hyperf.wiki
* @contact group@hyperf.io
* @license https://github.com/hyperf/hyperf/blob/master/LICENSE
*/
namespace Hyperf\Utils;
use Closure;
use Hyperf\Engine\Channel;
use Hyperf\Utils\Exception\ExceptionThrower;
use Hyperf\Utils\Exception\WaitTimeoutException;
use Throwable;
class Waiter
{
/**
* @var float
*/
protected $pushTimeout = 10.0;
/**
* @var float
*/
protected $popTimeout = 10.0;
public function __construct(float $timeout = 10.0)
{
$this->popTimeout = $timeout;
}
/**
* @param null|float $timeout seconds
*/
public function wait(Closure $closure, ?float $timeout = null)
{
if ($timeout === null) {
$timeout = $this->popTimeout;
}
$channel = new Channel(1);
Coroutine::create(function () use ($channel, $closure) {
try {
$result = $closure();
} catch (Throwable $exception) {
$result = new ExceptionThrower($exception);
} finally {
$channel->push($result ?? null, $this->pushTimeout);
}
});
$result = $channel->pop($timeout);
if ($result === false && $channel->isTimeout()) {
throw new WaitTimeoutException(sprintf('Channel wait failed, reason: Timed out for %s s', $timeout));
}
if ($result instanceof ExceptionThrower) {
throw $result->getThrowable();
}
return $result;
}
}