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<?php
/**
* GpsLab component.
*
* @author Peter Gribanov <[email protected]>
* @copyright Copyright (c) 2016, Peter Gribanov
* @license http://opensource.org/licenses/MIT
*/
namespace GpsLab\Domain\Event\Queue;
use GpsLab\Domain\Event\EventInterface;
class MemoryUniqueEventQueue implements EventQueueInterface
{
* @var EventInterface[]
private $events = [];
* Push event to queue.
* @param EventInterface $event
* @return bool
public function push(EventInterface $event)
$index = array_search($event, $this->events);
if ($index !== false) {
$this->events[$index] = $event; // override exists event
} else {
$this->events[] = $event;
}
return true;
* Pop event from queue. Return NULL if queue is empty.
* @return EventInterface|null
public function pop()
return array_shift($this->events);
gpslab /
domain-event
