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<?php
namespace League\Tactician\Bundle\Handler;
use League\Tactician\Exception\MissingHandlerException;
use League\Tactician\Handler\Locator\HandlerLocator;
use Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Lazily loads Command Handlers from the Symfony DI container
*/
class ContainerBasedHandlerLocator implements HandlerLocator
{
/**
* @var ContainerInterface
*/
private $container;
/**
* @var array
*/
private $commandToServiceId = [];
/**
* @param ContainerInterface $container
* @param array $commandToServiceIdMapping
*/
public function __construct(ContainerInterface $container, array $commandToServiceIdMapping)
{
$this->container = $container;
$this->commandToServiceId = $commandToServiceIdMapping;
}
/**
* Retrieves the handler for a specified command
*
* @param string $commandName
* @return object
*
* @throws MissingHandlerException
*/
public function getHandlerForCommand($commandName)
{
if (!isset($this->commandToServiceId[$commandName])) {
throw MissingHandlerException::forCommand($commandName);
}
return $this->container->get($this->commandToServiceId[$commandName]);
}
}