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   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  namespace mod_bigbluebuttonbn\task;
  18  
  19  use core\task\adhoc_task;
  20  use mod_bigbluebuttonbn\recording;
  21  
  22  /**
  23   * Class containing the scheduled task for converting recordings for the BigBlueButton version 2.5 in Moodle 4.0.
  24   *
  25   * @package   mod_bigbluebuttonbn
  26   * @copyright 2021 Jesus Federico, Blindside Networks Inc <jesus at blindsidenetworks dot com>
  27   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  28   */
  29  class reset_recordings extends adhoc_task {
  30  
  31      /** @var int Chunk size to use when resetting recordings */
  32      protected static $chunksize = 100;
  33  
  34      /**
  35       * Run the migration task.
  36       */
  37      public function execute() {
  38          if ($this->process_reset_recordings()) {
  39              \core\task\manager::queue_adhoc_task(new static());
  40          }
  41      }
  42  
  43      /**
  44       * Process all bigbluebuttonbn_recordings looking for entries which should be reset to be fetched again.
  45       *
  46       * @return bool Whether any more recodgins are waiting to be processed
  47       */
  48      protected function process_reset_recordings(): bool {
  49          global $DB;
  50  
  51          $classname = static::class;
  52  
  53          mtrace("Executing {$classname}...");
  54  
  55          // Read a block of recordings to be updated.
  56          $recs = $this->get_recordngs_to_reset();
  57  
  58          if (empty($recs)) {
  59              mtrace("No recordings were found for reset...");
  60              // No more logs. Stop queueing.
  61              return false;
  62          }
  63  
  64          // Reset status of {chunksize} recordings.
  65          mtrace("Reset status of " . self::$chunksize . " recordings...");
  66          $sql = "UPDATE {bigbluebuttonbn_recordings}
  67                  SET status = :status_reset
  68                  WHERE id = " . implode(' OR id = ', array_keys($recs));
  69          $DB->execute($sql,
  70              ['status_reset' => recording::RECORDING_STATUS_RESET]
  71          );
  72  
  73          return true;
  74      }
  75  
  76      /**
  77       * Get the list of recordings to be reset.
  78       *
  79       * @return array
  80       */
  81      protected function get_recordngs_to_reset(): array {
  82          global $DB;
  83  
  84          return $DB->get_records_sql(
  85              'SELECT * FROM {bigbluebuttonbn_recordings}
  86               WHERE status = :status_processed OR status = :status_notified
  87               ORDER BY timecreated DESC', [
  88                  'status_processed' => recording::RECORDING_STATUS_PROCESSED,
  89                  'status_notified' => recording::RECORDING_STATUS_NOTIFIED
  90              ],
  91              0,
  92              self::$chunksize
  93          );
  94      }
  95  
  96  }