CacheRefresher.php in Optimizely 8.3

Namespace

Drupal\optimizely\Util

File

src/Util/CacheRefresher.php

<?php

namespace Drupal\optimizely\Util;


/**
 * Refresh the cache as needed.
 *
 * Any functionality in the module that may change how snippets are included
 * on various pages must call into this class.
 */
class CacheRefresher {

  /**
   * Refresh the cache.
   *
   * @param array $path_array
   *   An array of the target paths entries that the cache needs
   *   to be cleared. Each entry can also contain wildcards or be
   *   variables such as "<front>".
   * @param array $original_path_array
   *   If a set of paths is being changed, this will be the original set.
   */
  public static function doRefresh(array $path_array, array $original_path_array = NULL) {

    // If there are project edits that include changes to the path,
    // clear cache on all paths/tags to add or remove Optimizely
    // javascript call.
    //
    // The project paths also serve as cache tags, so all we need to do
    // is invalidate all of the affected paths, treating them as cache tags.
    //
    if (isset($original_path_array)) {
      $path_array = array_merge($path_array, $original_path_array);
    }

    // Prefix each path with "optimizely:" to form its cache tag.
    // @See our implementation of hook_page_attachments()
    $cache_tags = [];
    foreach ($path_array as $path) {
      $cache_tags[] = 'optimizely:' . $path;
    }
    \Drupal::service('cache_tags.invalidator')
      ->invalidateTags($cache_tags);
    drupal_set_message(t('"Render" cache has been cleared based on the project path settings.'), 'status');
  }

}

Classes

Name	Description
CacheRefresher	Refresh the cache as needed.