Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Tests\Component\FileCache;
Chris@0: 
Chris@0: use Drupal\Component\FileCache\FileCacheBackendInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Allows to cache data based on file modification dates in a static cache.
Chris@0:  */
Chris@0: class StaticFileCacheBackend implements FileCacheBackendInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Internal static cache.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected static $cache = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Bin used for storing the data in the static cache.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $bin;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a PHP Storage FileCache backend.
Chris@0:    *
Chris@0:    * @param array $configuration
Chris@0:    *   (optional) Configuration used to configure this object.
Chris@0:    */
Chris@0:   public function __construct($configuration) {
Chris@0:     $this->bin = isset($configuration['bin']) ? $configuration['bin'] : 'file_cache';
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function fetch(array $cids) {
Chris@0:     $result = [];
Chris@0:     foreach ($cids as $cid) {
Chris@0:       if (isset(static::$cache[$this->bin][$cid])) {
Chris@0:         $result[$cid] = static::$cache[$this->bin][$cid];
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     return $result;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function store($cid, $data) {
Chris@0:     static::$cache[$this->bin][$cid] = $data;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function delete($cid) {
Chris@0:     unset(static::$cache[$this->bin][$cid]);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Allows tests to reset the static cache to avoid side effects.
Chris@0:    */
Chris@0:   public static function reset() {
Chris@0:     static::$cache = [];
Chris@0:   }
Chris@0: 
Chris@0: }