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<?php
/**
* GpsLab component.
*
* @author Peter Gribanov <[email protected]>
* @copyright Copyright (c) 2011, Peter Gribanov
* @license http://opensource.org/licenses/MIT
*/
namespace GpsLab\Component\Command\Queue\PubSub;
use GpsLab\Component\Command\Command;
class ExecutingCommandQueue implements CommandQueue
{
* @var callable|null
private $callback;
* Publish command to queue.
* @param Command $command
* @return bool
public function publish(Command $command)
// absence of a subscriber is not a error
if (is_callable($this->callback)) {
call_user_func($this->callback, $command);
}
return true;
* Subscribe on command queue.
* @param callable $callback
public function subscribe(callable $callback)
$this->callback = $callback;
gpslab /
cqrs
