[Summary view]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * A scheduled task.
  19   *
  20   * @package    editor_atto
  21   * @copyright  2015 Damyon Wiese
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  namespace editor_atto\task;
  25  
  26  use \core\task\scheduled_task;
  27  
  28  /**
  29   * Simple task to run the autosave cleanup task.
  30   */
  31  class autosave_cleanup_task extends scheduled_task {
  32  
  33      /**
  34       * Get a descriptive name for this task (shown to admins).
  35       *
  36       * @return string
  37       */
  38      public function get_name() {
  39          return get_string('taskautosavecleanup', 'editor_atto');
  40      }
  41  
  42      /**
  43       * Do the job.
  44       * Throw exceptions on errors (the job will be retried).
  45       */
  46      public function execute() {
  47          global $DB;
  48  
  49          $now = time();
  50          // This is the oldest time any autosave text will be recovered from.
  51          // This is so that there is a good chance the draft files will still exist (there are many variables so
  52          // this is impossible to guarantee).
  53          $before = $now - 60*60*24*4;
  54  
  55          $DB->delete_records_select('editor_atto_autosave', 'timemodified < :before', array('before' => $before));
  56      }
  57  
  58  }