<?php
  /**
   * PHP OpenCloud library.
   * 
   * @copyright 2014 Rackspace Hosting, Inc. See LICENSE for information.
   * @license   https://www.apache.org/licenses/LICENSE-2.0
   * @author    Glen Campbell <glen.campbell@rackspace.com>
   * @author    Jamie Hannaford <jamie.hannaford@rackspace.com>
   */
  
  namespace OpenCloud\Volume\Resource;
  
  use OpenCloud\Common\PersistentObject;
  use OpenCloud\Common\Lang;
  use OpenCloud\Common\Exceptions;
  
  /**
   * The Snapshot class represents a single block storage snapshot
   */
  class Snapshot extends PersistentObject 
  {
  
      public $id;
      public $display_name;
      public $display_description;
      public $volume_id;
      public $status;
      public $size;
      public $created_at;
      public $metadata;
  
      protected $force = false;
  
      protected static $json_name = 'snapshot';
      protected static $url_resource = 'snapshots';
  
      protected $createKeys = array(
          'display_name',
          'display_description',
          'volume_id',
          'force'
      );
  
      public function update($params = array()) 
      {
          return $this->noUpdate();
      }
  
      public function name() 
      {
          return $this->display_name;
      }
  
  }