update_authorize_update_batch_finished

update_authorize_update_batch_finished($success, $results)

function update_authorize_update_batch_finished($success, $results) {
  foreach ($results['log'] as $messages) {
    if (!empty($messages['#abort'])) {
      $success = FALSE;
    }
  }
  $offline = \Drupal::state()->get('system.maintenance_mode');
  if ($success) {
    // Now that the update completed, we need to clear the available update data
    // and recompute our status, so prevent show bogus results.
    _update_authorize_clear_update_status();

    // Take the site out of maintenance mode if it was previously that way.
    if ($offline && isset($_SESSION['maintenance_mode']) && $_SESSION['maintenance_mode'] == FALSE) {
      \Drupal::state()->set('system.maintenance_mode', FALSE);
      $page_message = array(
        'message' => t('Update was completed successfully. Your site has been taken out of maintenance mode.'),
        'type' => 'status',
      );
    }
    else {
      $page_message = array(
        'message' => t('Update was completed successfully.'),
        'type' => 'status',
      );
    }
  }
  elseif (!$offline) {
    $page_message = array(
      'message' => t('Update failed! See the log below for more information.'),
      'type' => 'error',
    );
  }
  else {
    $page_message = array(
      'message' => t('Update failed! See the log below for more information. Your site is still in maintenance mode.'),
      'type' => 'error',
    );
  }
  // Since we're doing an update of existing code, always add a task for
  // running update.php.
  $url = Url::fromRoute('system.db_update');
  $results['tasks'][] = t('Your modules have been downloaded and updated.');
  $results['tasks'][] = [
    '#type' => 'link',
    '#url' => $url,
    '#title' => t('Run database updates'),
    // Since this is being called outsite of the primary front controller,
    // the base_url needs to be set explicitly to ensure that links are
    // relative to the site root.
    // @todo Simplify with https://www.drupal.org/node/2548095
    '#options' => [
      'absolute' => TRUE,
      'base_url' => $GLOBALS['base_url'],
    ],
    '#access' => $url->access(\Drupal::currentUser())
  ];

  // Unset the variable since it is no longer needed.
  unset($_SESSION['maintenance_mode']);

  // Set all these values into the SESSION so authorize.php can display them.
  $_SESSION['authorize_results']['success'] = $success;
  $_SESSION['authorize_results']['page_message'] = $page_message;
  $_SESSION['authorize_results']['messages'] = $results['log'];
  $_SESSION['authorize_results']['tasks'] = $results['tasks'];
  $_SESSION['authorize_page_title'] = t('Update manager');
}