FileEntityNormalizer.php in Replication 8.2

Namespace

Drupal\replication\Normalizer

File

src/Normalizer/FileEntityNormalizer.php

<?php

namespace Drupal\replication\Normalizer;

use Drupal\Core\Entity\EntityManagerInterface;
use Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginManagerInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\file\FileInterface;
use Drupal\multiversion\Entity\Index\MultiversionIndexFactory;
use Drupal\replication\ProcessFileAttachment;
use Drupal\replication\UsersMapping;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
class FileEntityNormalizer extends ContentEntityNormalizer implements DenormalizerInterface {

  /**
   * @var string[]
   */
  protected $supportedInterfaceOrClass = [
    'Drupal\\file\\FileInterface',
  ];

  /**
   * @var string[]
   */
  protected $format = [
    'json',
  ];

  /**
   * @var \Drupal\replication\ProcessFileAttachment
   */
  protected $processFileAttachment;

  /**
   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
   * @param \Drupal\multiversion\Entity\Index\MultiversionIndexFactory $index_factory
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   * @param \Drupal\replication\UsersMapping $users_mapping
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   * @param \Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginManagerInterface $selection_manager
   * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
   * @param \Drupal\replication\ProcessFileAttachment $process_file_attachment
   */
  public function __construct(EntityManagerInterface $entity_manager, MultiversionIndexFactory $index_factory, LanguageManagerInterface $language_manager, UsersMapping $users_mapping, ModuleHandlerInterface $module_handler, SelectionPluginManagerInterface $selection_manager = NULL, EventDispatcherInterface $event_dispatcher = NULL, ProcessFileAttachment $process_file_attachment) {
    parent::__construct($entity_manager, $index_factory, $language_manager, $users_mapping, $module_handler, $selection_manager, $event_dispatcher);
    $this->processFileAttachment = $process_file_attachment;
  }

  /**
   * {@inheritdoc}
   */
  public function normalize($data, $format = NULL, array $context = []) {
    $normalized = parent::normalize($data, $format, $context);
    $file_system = \Drupal::service('file_system');
    $uri = $data
      ->getFileUri();
    $file_contents = file_get_contents($uri);
    if (in_array($file_system
      ->uriScheme($uri), [
      'public',
      'private',
    ]) == FALSE) {
      $file_data = '';
    }
    else {
      $file_data = base64_encode($file_contents);
    }

    // @todo {@link https://www.drupal.org/node/2600360 Add revpos and other missing properties to the result array.}
    $normalized['@attachment'] = [
      'uuid' => $data
        ->uuid(),
      'uri' => $uri,
      'content_type' => $data
        ->getMimeType(),
      'digest' => 'md5-' . base64_encode(md5($file_contents)),
      'length' => $data
        ->getSize(),
      'data' => $file_data,
    ];
    return $normalized;
  }

  /**
   * {@inheritdoc}
   */
  public function denormalize($data, $class, $format = NULL, array $context = []) {
    $file = NULL;
    if (!empty($data['@attachment']['uuid'])) {
      $workspace = isset($context['workspace']) ? $context['workspace'] : NULL;

      /** @var FileInterface $file */
      $this->processFileAttachment
        ->process($data['@attachment'], 'base64_stream', $workspace);
      unset($data['@attachment']);
    }
    return parent::denormalize($data, $class, $format, $context);
  }
  public function supportsDenormalization($data, $type, $format = NULL) {

    // We need to accept both FileInterface and ContentEntityInterface classes.
    // File entities are treated as standard content entities.
    if (in_array($type, [
      'Drupal\\Core\\Entity\\ContentEntityInterface',
      'Drupal\\file\\FileInterface',
    ], true)) {

      // If a document has _attachment then we assume it's a file entity.
      if (!empty($data['@attachment'])) {
        return true;
      }
    }
    return false;
  }

}

Classes

Name	Description
FileEntityNormalizer