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<?php declare(strict_types=1);
namespace Stratadox\CommandHandling;
/**
* Decorator that invokes the middleware before starting to handle a command.
*
* Used to configure middleware that runs before command handling.
* Such middleware could, for example:
* - fail early if the request is not authenticated
* - log the command handling attempt
* - start a unit of work or database transaction
* - etc
*/
final class BeforeHandling implements Handler
{
private $middleware;
private $handler;
private function __construct(Middleware $middleware, Handler $handler)
$this->middleware = $middleware;
$this->handler = $handler;
}
public static function invoke(
Middleware $middleware,
Handler $handler
): Handler {
return new self($middleware, $handler);
/** @inheritdoc */
public function handle(object $command): void
$this->middleware->invoke($command);
$this->handler->handle($command);
Stratadox /
CommandHandling
