ConfigRewriter.php in Configuration Rewrite 8.2

Namespace

Drupal\config_rewrite

File

src/ConfigRewriter.php

<?php

namespace Drupal\config_rewrite;

use Drupal\Component\Utility\NestedArray;
use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Logger\LoggerChannelInterface;
use Symfony\Component\Yaml\Yaml;
use Drupal\Core\File\FileSystem;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides methods to rewrite configuration.
 */
class ConfigRewriter implements ConfigRewriterInterface {

  /**
   * The config factory.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * The language config factory override service.
   *
   * @var \Drupal\language\Config\LanguageConfigFactoryOverrideInterface|NULL
   */
  protected $languageConfigFactoryOverride;

  /**
   * The module handler.
   *
   * @var \Drupal\Core\Extension\ModuleHandlerInterface
   */
  protected $moduleHandler;

  /**
   * A logger channel.
   *
   * @var \Drupal\Core\Logger\LoggerChannelInterface
   */
  protected $logger;

  /**
   * The filesystem access
   *
   * @var \Drupal\Core\File\FileSystem
   */
  protected $fileSystem;

  /**
   * Constructs a new ConfigRewriter.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The config factory.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler.
   * @param \Drupal\Core\Logger\LoggerChannelInterface $logger
   *   A logger channel.
   * @param \Drupal\language\Config\LanguageConfigFactoryOverrideInterface|NULL $language_config_factory_override
   *   (Optional) The language config factory override service.
   * @param \Drupal\Core\File\FileSystem $file_system
   *   The filesystem access.
   */
  public function __construct(ConfigFactoryInterface $config_factory, ModuleHandlerInterface $module_handler, LoggerChannelInterface $logger, $language_config_factory_override, FileSystem $file_system) {
    $this->configFactory = $config_factory;
    $this->moduleHandler = $module_handler;
    $this->logger = $logger;
    $this->languageConfigFactoryOverride = $language_config_factory_override;
    $this->fileSystem = $file_system;
  }

  /**
   * {@inheritDoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('file_system'));
  }

  /**
   * Rewrites configuration for a given module.
   *
   * @param $module
   *   The name of a module (without the .module extension).
   */
  public function rewriteModuleConfig($module) {

    // Load the module extension.
    $extension = $this->moduleHandler
      ->getModule($module);

    // Config rewrites are stored in 'modulename/config/rewrite'.
    $dir_base = $extension
      ->getPath() . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'rewrite';
    $languages = \Drupal::languageManager()
      ->getLanguages();

    // Rewrite configuration for the default language.
    $this
      ->rewriteDirectoryConfig($extension, $dir_base);

    // Rewrite configuration for each enabled language.
    foreach ($languages as $langcode => $language) {
      $rewrite_dir = $dir_base . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR . $langcode;
      $this
        ->rewriteDirectoryConfig($extension, $rewrite_dir, $langcode);
    }
  }

  /**
   * Finds files in a given directory and uses them to rewrite active config.
   *
   * @param \Drupal\Core\Extension\Extension $extension
   *   The extension that contains the config rewrites.
   * @param string $rewrite_dir
   *   The directory that contains config rewrites.
   * @param string $langcode
   *   (Optional) The langcode that this configuration is for, if applicable.
   */
  protected function rewriteDirectoryConfig($extension, $rewrite_dir, $langcode = NULL) {
    if ($langcode && !$this->languageConfigFactoryOverride) {
      return;
    }

    // Scan the rewrite directory for rewrites.
    if (file_exists($rewrite_dir) && ($files = $this
      ->fileScanDirectory($rewrite_dir, '/^.*\\.yml$/i', [
      'recurse' => FALSE,
    ]))) {
      foreach ($files as $file) {

        // Parse the rewrites and retrieve the original config.
        $rewrite = Yaml::parse(file_get_contents($rewrite_dir . DIRECTORY_SEPARATOR . $file->name . '.yml'));
        if ($langcode) {

          /** @var \Drupal\language\Config\LanguageConfigOverride $original_config */
          $original_config = $this->languageConfigFactoryOverride
            ->getOverride($langcode, $file->name);
          $rewrite = $this
            ->rewriteConfig($original_config
            ->get(), $rewrite);
        }
        else {
          $original_config = $this->configFactory
            ->getEditable($file->name);
          $rewrite = $this
            ->rewriteConfig($original_config
            ->getRawData(), $rewrite);
        }

        // Unset 'config_rewrite' key before saving rewritten values.
        if (isset($rewrite['config_rewrite'])) {
          unset($rewrite['config_rewrite']);
        }

        // Save the rewritten configuration data.
        $result = $original_config
          ->setData($rewrite)
          ->save() ? 'rewritten' : 'not rewritten';

        // Log a message indicating whether the config was rewritten or not.
        $log = $langcode ? '@config (@langcode) @result by @module' : '@config @result by @module';
        $this->logger
          ->notice($log, [
          '@config' => $file->name,
          '@result' => $result,
          '@module' => $extension
            ->getName(),
        ]);
      }
    }
  }

  /**
   * Returns rewritten configuration.
   *
   * @param array $original_config
   *   The original configuration array to rewrite.
   * @param array $rewrite
   *   An array of configuration rewrites.
   *
   * @return array
   *   The rewritten config.
   */
  public function rewriteConfig($original_config, $rewrite) {
    if (isset($rewrite['config_rewrite']) && $rewrite['config_rewrite'] == 'replace') {
      return $rewrite;
    }
    return NestedArray::mergeDeep($original_config, $rewrite);
  }

  /**
   * Wraps file_scan_directory().
   *
   * @param $dir
   *   The base directory or URI to scan, without trailing slash.
   * @param $mask
   *   The preg_match() regular expression for files to be included.
   * @param $options
   *   An associative array of additional options.
   *
   * @return array
   *   An associative array (keyed on the chosen key) of objects with 'uri',
   *   'filename', and 'name' properties corresponding to the matched files.
   */
  protected function fileScanDirectory($dir, $mask, $options = array()) {
    return $this->fileSystem
      ->scanDirectory($dir, $mask, $options);
  }

}

Classes

Name	Description
ConfigRewriter	Provides methods to rewrite configuration.