/
AssertingMessageBus.php
51 lines (44 loc) · 1 KB
/
AssertingMessageBus.php
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<?php
/*
* This file is part of the ICanBoogie package.
*
* (c) Olivier Laviale <olivier.laviale@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace ICanBoogie\MessageBus;
/**
* A MessageBus decorator that asserts messages before dispatching them.
*/
class AssertingMessageBus implements MessageBus
{
/**
* @var MessageBus
*/
private $message_bus;
/**
* @var callable
*/
private $assertion;
/**
* @param MessageBus $message_bus
* @param callable $assertion A callable that should throw an exception if the message shouldn't
* be dispatched.
*/
public function __construct(MessageBus $message_bus, callable $assertion)
{
$this->message_bus = $message_bus;
$this->assertion = $assertion;
}
/**
* @param object $message
*
* @return mixed
*/
public function dispatch($message)
{
call_user_func($this->assertion, $message);
return $this->message_bus->dispatch($message);
}
}