CultuurNet\UDB3\EventHandling\DomainMessage\PayloadIsInstanceOf

Complexity

Total Complexity

5

Size/Duplication

Total Lines	42
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	2
A	isSatisfiedBy()	0	17	3

<?php
/**
 * @file
 */

namespace CultuurNet\UDB3\EventHandling\DomainMessage;

use Broadway\Domain\DomainMessage;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\NullLogger;

class PayloadIsInstanceOf implements SpecificationInterface, LoggerAwareInterface
{
    use LoggerAwareTrait;

    /**
     * @var string
     */
    private $typeName;

    /**
     * @param string $typeName
     */
    public function __construct($typeName)
    {
        if (!is_string($typeName)) {
            throw new \InvalidArgumentException('Value for argument typeName should be a string');
        }
        $this->typeName = $typeName;
        $this->logger = new NullLogger();
    }

    /**
     * @inheritdoc
     */
    public function isSatisfiedBy(DomainMessage $domainMessage)
    {
        $payload = $domainMessage->getPayload();

        $payloadClass = get_class($payload);
        $this->logger->info(
            "expected: {$this->typeName}, actual: {$payloadClass}"
        );

        $satisfied =
            is_a($payload, $this->typeName) ||
            is_subclass_of($payload, $this->typeName);

Due to PHP Bug #53727, is_subclass_of might return inconsistent results on some PHP versions if $this->typeName can be an interface. If so, you could instead use ReflectionClass::implementsInterface.

        $this->logger->info('satisfied: ' . ($satisfied ? 'yes' : 'no'));

        return $satisfied;
    }
}