Symfony Serializer custom Denormalizer - symfony

Question

I would like to decorate the ArrayDenormalizer for the Symfony serializer with a custom Denormalizer, but it seems it hits a Circular reference problem in the DependencyInjection since Nginx is crashing with a 502.
The custom Denormalizer implements DenormalizerAwareInterface so i actually expected that Symfony would handle the dependency injection automatically via Autowiring.
<?php
namespace App\Serializer;
use App\MyEntity;
use Symfony\Component\Serializer\Normalizer\DenormalizerAwareInterface;
use Symfony\Component\Serializer\Normalizer\DenormalizerAwareTrait;
use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
class PreCheckRequestDenormalizer implements DenormalizerInterface, DenormalizerAwareInterface
{
use DenormalizerAwareTrait;
public function denormalize(mixed $data, string $type, string $format = null, array $context = [])
{
if (in_array($data['locale'], ['de', 'en']) === false) {
$data['locale'] = 'en';
}
return $this->denormalizer->denormalize($data, $type, $format, $context);
}
public function supportsDenormalization(mixed $data, string $type, string $format = null)
{
return is_array($data) && $type === MyEntity::class;
}
}
What am i missing here?
Btw it is Symfony 6.1.

Answer 1

Seems this is a bug with autowiring of NormalizeAwareInterface in Symfony 6.1:
https://github.com/symfony/maker-bundle/issues/1252#issuecomment-1342478104
This bug led into a circular reference problem.
I solved it with not using the DenormalizerAwareInterface and DenormalizerAwareTrait and by disabling autowiring for the custom Denormalizer and declare the service explicitly:
App\Serializer\PreCheckRequestDenormalizer:
autowire: false
arguments:
$denormalizer: '#serializer.normalizer.object'
$allowedLocales: '%app.allowed_locales%'
$defaultLocale: '%env(string:DEFAULT_LOCALE)%'
The comments of the issue describe possible further other ways, but thsi solves it for me.