mapogolions/scrutor

Decorate already registered service

Scrutor

Just decorate already registered services

Based on Illuminate container

Inspired by Scrutor

Let's say you want to add an extra layer on top of the existing service functionality. It doesn't matter what it is - logging, caching, performance measurement. The decorator pattern is one option that suits this purpose.

interface ServiceContract
{
	public function callMe();
}

class Service implements ServiceContract
{
	public function callMe() { /* do something */ }
}

class CachedService implements ServiceContract
{
	private $result = null;
	private ServiceContract $origin;

	public function __construct(ServiceContract $origin)
	{
		$this->origin = $origin;
	}

	public callMe()
	{
		if (!isset($result))
		{
			$this->result = $this->origin->callMe();
		}
		return $this->result;
	}
}

$container = new Container();
$container->singleton(ServiceContract::class, Service::class);
$container->decorate(ServiceContract::class, CachedService::class);

Please see unit tests for more details