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<?php |
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declare(strict_types=1); |
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namespace RemotelyLiving\PHPCommandBus; |
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use Psr\Container; |
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use RemotelyLiving\PHPCommandBus\Exceptions; |
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use RemotelyLiving\PHPCommandBus\Interfaces; |
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final class Resolver implements Interfaces\Resolver |
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{ |
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private ?Container\ContainerInterface $container; |
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/** |
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* @var \RemotelyLiving\PHPCommandBus\Interfaces\Handler[] |
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*/ |
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private array $map = []; |
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/** |
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* @var callable[] |
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*/ |
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private array $deferred = []; |
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public function __construct(Container\ContainerInterface $container = null) |
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{ |
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$this->container = $container; |
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} |
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public static function create(Container\ContainerInterface $container = null): Interfaces\Resolver |
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{ |
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return new static($container); |
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} |
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public function resolve(object $command): Interfaces\Handler |
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{ |
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$commandClass = get_class($command); |
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if ($this->container && $this->container->has($commandClass)) { |
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return $this->container->get($commandClass); |
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} |
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if (isset($this->map[$commandClass])) { |
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return $this->map[$commandClass]; |
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} |
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if (isset($this->deferred[$commandClass])) { |
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$this->map[$commandClass] = $this->deferred[$commandClass](); |
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unset($this->deferred[$commandClass]); |
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return $this->map[$commandClass]; |
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} |
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throw new Exceptions\OutOfBounds("Command Handler for {$commandClass} not found"); |
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} |
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public function pushHandler(string $commandClass, Interfaces\Handler $handler): Interfaces\Resolver |
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{ |
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$this->map[$commandClass] = $handler; |
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return $this; |
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} |
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public function pushHandlerDeferred(string $class, callable $handlerFn): Interfaces\Resolver |
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{ |
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$this->deferred[$class] = $handlerFn; |
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return $this; |
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} |
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} |
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remotelyliving /
php-command-bus
