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Differences Between: [Versions 310 and 401] [Versions 39 and 401] [Versions 401 and 402] [Versions 401 and 403]

   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   * Adhoc task that performs asynchronous course copies.
  19   *
  20   * @package    core
  21   * @copyright  2020 onward The Moodle Users Association <https://moodleassociation.org/>
  22   * @author     Matt Porritt <mattp@catalyst-au.net>
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  namespace core\task;
  27  
  28  use async_helper;
  29  
  30  defined('MOODLE_INTERNAL') || die();
  31  
  32  global $CFG;
  33  require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
  34  require_once($CFG->dirroot . '/backup/moodle2/backup_plan_builder.class.php');
  35  require_once($CFG->libdir . '/externallib.php');
  36  
  37  /**
  38   * Adhoc task that performs asynchronous course copies.
  39   *
  40   * @package     core
  41   * @copyright  2020 onward The Moodle Users Association <https://moodleassociation.org/>
  42   * @author     Matt Porritt <mattp@catalyst-au.net>
  43   * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  44   */
  45  class asynchronous_copy_task extends adhoc_task {
  46  
  47      /**
  48       * Run the adhoc task and preform the backup.
  49       */
  50      public function execute() {
  51          global $CFG, $DB;
  52          $started = time();
  53  
  54          $backupid = $this->get_custom_data()->backupid;
  55          $restoreid = $this->get_custom_data()->restoreid;
  56          $backuprecord = $DB->get_record('backup_controllers', array('backupid' => $backupid), 'id, itemid', MUST_EXIST);
  57          $restorerecord = $DB->get_record('backup_controllers', array('backupid' => $restoreid), 'id, itemid', MUST_EXIST);
  58  
  59          // First backup the course.
  60          mtrace('Course copy: Processing asynchronous course copy for course id: ' . $backuprecord->itemid);
  61          try {
  62              $bc = \backup_controller::load_controller($backupid); // Get the backup controller by backup id.
  63          } catch (\backup_dbops_exception $e) {
  64              mtrace('Course copy: Can not load backup controller for copy, marking job as failed');
  65              delete_course($restorerecord->itemid, false); // Clean up partially created destination course.
  66              return; // Return early as we can't continue.
  67          }
  68  
  69          $rc = \restore_controller::load_controller($restoreid);  // Get the restore controller by restore id.
  70          $bc->set_progress(new \core\progress\db_updater($backuprecord->id, 'backup_controllers', 'progress'));
  71          $copyinfo = $rc->get_copy();
  72          $backupplan = $bc->get_plan();
  73  
  74          $keepuserdata = (bool)$copyinfo->userdata;
  75          $keptroles = $copyinfo->keptroles;
  76  
  77          $bc->set_kept_roles($keptroles);
  78  
  79          // If we are not keeping user data don't include users or data in the backup.
  80          // In this case we'll add the user enrolments at the end.
  81          // Also if we have no roles to keep don't backup users.
  82          if (empty($keptroles) || !$keepuserdata) {
  83              $backupplan->get_setting('users')->set_status(\backup_setting::NOT_LOCKED);
  84              $backupplan->get_setting('users')->set_value('0');
  85          } else {
  86              $backupplan->get_setting('users')->set_value('1');
  87          }
  88  
  89          // Do some preflight checks on the backup.
  90          $status = $bc->get_status();
  91          $execution = $bc->get_execution();
  92          // Check that the backup is in the correct status and
  93          // that is set for asynchronous execution.
  94          if ($status == \backup::STATUS_AWAITING && $execution == \backup::EXECUTION_DELAYED) {
  95              // Execute the backup.
  96              mtrace('Course copy: Backing up course, id: ' . $backuprecord->itemid);
  97              $bc->execute_plan();
  98  
  99          } else {
 100              // If status isn't 700, it means the process has failed.
 101              // Retrying isn't going to fix it, so marked operation as failed.
 102              mtrace('Course copy: Bad backup controller status, is: ' . $status . ' should be 700, marking job as failed.');
 103              $bc->set_status(\backup::STATUS_FINISHED_ERR);
 104              delete_course($restorerecord->itemid, false); // Clean up partially created destination course.
 105              $bc->destroy();
 106              return; // Return early as we can't continue.
 107  
 108          }
 109  
 110          $results = $bc->get_results();
 111          $backupbasepath = $backupplan->get_basepath();
 112          $file = $results['backup_destination'];
 113          $file->extract_to_pathname(get_file_packer('application/vnd.moodle.backup'), $backupbasepath);
 114          // Start the restore process.
 115          $rc->set_progress(new \core\progress\db_updater($restorerecord->id, 'backup_controllers', 'progress'));
 116          $rc->prepare_copy();
 117  
 118          // Set the course settings we can do now (the remaining settings will be done after restore completes).
 119          $plan = $rc->get_plan();
 120  
 121          $startdate = $plan->get_setting('course_startdate');
 122          $startdate->set_value($copyinfo->startdate);
 123          $fullname = $plan->get_setting('course_fullname');
 124          $fullname->set_value($copyinfo->fullname);
 125          $shortname = $plan->get_setting('course_shortname');
 126          $shortname->set_value($copyinfo->shortname);
 127  
 128          // Do some preflight checks on the restore.
 129          $rc->execute_precheck();
 130          $status = $rc->get_status();
 131          $execution = $rc->get_execution();
 132  
 133          // Check that the restore is in the correct status and
 134          // that is set for asynchronous execution.
 135          if ($status == \backup::STATUS_AWAITING && $execution == \backup::EXECUTION_DELAYED) {
 136              // Execute the restore.
 137              mtrace('Course copy: Restoring into course, id: ' . $restorerecord->itemid);
 138              $rc->execute_plan();
 139  
 140          } else {
 141              // If status isn't 700, it means the process has failed.
 142              // Retrying isn't going to fix it, so marked operation as failed.
 143              mtrace('Course copy: Bad backup controller status, is: ' . $status . ' should be 700, marking job as failed.');
 144              $rc->set_status(\backup::STATUS_FINISHED_ERR);
 145              delete_course($restorerecord->itemid, false); // Clean up partially created destination course.
 146              $file->delete();
 147              if (empty($CFG->keeptempdirectoriesonbackup)) {
 148                  fulldelete($backupbasepath);
 149              }
 150              $rc->destroy();
 151              return; // Return early as we can't continue.
 152  
 153          }
 154  
 155          // Copy user enrolments from source course to destination.
 156          if (!empty($keptroles) && !$keepuserdata) {
 157              mtrace('Course copy: Creating user enrolments in destination course.');
 158              $context = \context_course::instance($backuprecord->itemid);
 159  
 160              $enrol = enrol_get_plugin('manual');
 161              $instance = null;
 162              $enrolinstances = enrol_get_instances($restorerecord->itemid, true);
 163              foreach ($enrolinstances as $courseenrolinstance) {
 164                  if ($courseenrolinstance->enrol == 'manual') {
 165                      $instance = $courseenrolinstance;
 166                      break;
 167                  }
 168              }
 169  
 170              // Abort if there enrolment plugin problems.
 171              if (empty($enrol) || empty($instance)) {
 172                  mtrace('Course copy: Could not enrol users in course.');;
 173                  delete_course($restorerecord->itemid, false);
 174                  return;
 175              }
 176  
 177              // Enrol the users from the source course to the destination.
 178              foreach ($keptroles as $roleid) {
 179                  $sourceusers = get_role_users($roleid, $context);
 180                  foreach ($sourceusers as $sourceuser) {
 181                      $enrol->enrol_user($instance, $sourceuser->id, $roleid);
 182                  }
 183              }
 184          }
 185  
 186          // Set up remaining course settings.
 187          $course = $DB->get_record('course', array('id' => $restorerecord->itemid), '*', MUST_EXIST);
 188          $course->visible = $copyinfo->visible;
 189          $course->idnumber = $copyinfo->idnumber;
 190          $course->enddate = $copyinfo->enddate;
 191  
 192          $DB->update_record('course', $course);
 193  
 194          // Send message to user if enabled.
 195          $messageenabled = (bool)get_config('backup', 'backup_async_message_users');
 196          if ($messageenabled && $rc->get_status() == \backup::STATUS_FINISHED_OK) {
 197              mtrace('Course copy: Sending user notification.');
 198              $asynchelper = new async_helper('copy', $restoreid);
 199              $messageid = $asynchelper->send_message();
 200              mtrace('Course copy: Sent message: ' . $messageid);
 201          }
 202  
 203          // Cleanup.
 204          $bc->destroy();
 205          $rc->destroy();
 206          $file->delete();
 207          if (empty($CFG->keeptempdirectoriesonbackup)) {
 208              fulldelete($backupbasepath);
 209          }
 210  
 211          $duration = time() - $started;
 212          mtrace('Course copy: Copy completed in: ' . $duration . ' seconds');
 213      }
 214  }