<?php namespace Guzzle\Batch; use Guzzle\Common\Exception\InvalidArgumentException; /** * BatchInterface decorator used to call a method each time flush is called */ class NotifyingBatch extends AbstractBatchDecorator { /** @var mixed Callable to call */ protected $callable; /** * @param BatchInterface $decoratedBatch Batch object to decorate * @param mixed $callable Callable to call * * @throws InvalidArgumentException */ public function __construct(BatchInterface $decoratedBatch, $callable) { if (!is_callable($callable)) { throw new InvalidArgumentException('The passed argument is not callable'); } $this->callable = $callable; parent::__construct($decoratedBatch); } public function flush() { $items = $this->decoratedBatch->flush(); call_user_func($this->callable, $items); return $items; } }