RegisterSerializationClassesCompilerPass.php

<?php

namespace Drupal\jsonapi\DependencyInjection\Compiler;

use Drupal\serialization\RegisterSerializationClassesCompilerPass as DrupalRegisterSerializationClassesCompilerPass;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;

/**
 * Adds services tagged JSON:API-only normalizers to the Serializer.
 *
 * Services tagged with 'jsonapi_normalizer' will be added to the JSON:API
 * serializer. No extensions can provide such services.
 *
 * JSON:API does respect generic (non-JSON:API) DataType-level normalizers.
 *
 * @internal JSON:API maintains no PHP API. The API is the HTTP API. This class
 *   may change at any time and could break any dependencies on it.
 *
 * @see https://www.drupal.org/project/drupal/issues/3032787
 * @see jsonapi.api.php
 */
class RegisterSerializationClassesCompilerPass extends DrupalRegisterSerializationClassesCompilerPass {
  
  /**
   * The service ID.
   *
   * @const string
   */
  const OVERRIDDEN_SERVICE_ID = 'jsonapi.serializer';
  
  /**
   * The service tag that only JSON:API normalizers should use.
   *
   * @const string
   */
  const OVERRIDDEN_SERVICE_NORMALIZER_TAG = 'jsonapi_normalizer';
  
  /**
   * The service tag that only JSON:API encoders should use.
   *
   * @const string
   */
  const OVERRIDDEN_SERVICE_ENCODER_TAG = 'jsonapi_encoder';
  
  /**
   * The ID for the JSON:API format.
   *
   * @const string
   */
  const FORMAT = 'api_json';
  
  /**
   * Adds services to the JSON:API Serializer.
   *
   * This code is copied from the class parent with two modifications. The
   * service id has been changed and the service tag has been updated.
   *
   * ID: 'serializer' -> 'jsonapi.serializer'
   * Tag: 'normalizer' -> 'jsonapi_normalizer'
   *
   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
   *   The container to process.
   */
  public function process(ContainerBuilder $container) {
    $definition = $container->getDefinition(static::OVERRIDDEN_SERVICE_ID);
    // Retrieve registered Normalizers and Encoders from the container.
    foreach ($container->findTaggedServiceIds(static::OVERRIDDEN_SERVICE_NORMALIZER_TAG) as $id => $attributes) {
      // Normalizers are not an API: mark private.
      $container->getDefinition($id)
        ->setPublic(FALSE);
      $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
      $normalizers[$priority][] = new Reference($id);
    }
    foreach ($container->findTaggedServiceIds(static::OVERRIDDEN_SERVICE_ENCODER_TAG) as $id => $attributes) {
      // Encoders are not an API: mark private.
      $container->getDefinition($id)
        ->setPublic(FALSE);
      $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
      $encoders[$priority][] = new Reference($id);
    }
    // Add the registered Normalizers and Encoders to the Serializer.
    if (!empty($normalizers)) {
      $definition->replaceArgument(0, $this->sort($normalizers));
    }
    if (!empty($encoders)) {
      $definition->replaceArgument(1, $this->sort($encoders));
    }
  }

}