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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.

Differences Between: [Versions 310 and 402] [Versions 311 and 402] [Versions 39 and 402] [Versions 400 and 402] [Versions 401 and 402] [Versions 402 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   * CLI task execution.
  19   *
  20   * @package    core
  21   * @subpackage cli
  22   * @copyright  2014 Petr Skoda
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  define('CLI_SCRIPT', true);
  27  
  28  require(__DIR__ . '/../../config.php');
  29  require_once("$CFG->libdir/clilib.php");
  30  
  31  list($options, $unrecognized) = cli_get_params(
  32      [
  33          'help' => false,
  34          'list' => false,
  35          'execute' => false,
  36          'showsql' => false,
  37          'showdebugging' => false,
  38          'force' => false,
  39      ], [
  40          'h' => 'help',
  41          'f' => 'force',
  42      ]
  43  );
  44  
  45  if ($unrecognized) {
  46      $unrecognized = implode("\n  ", $unrecognized);
  47      cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
  48  }
  49  
  50  if ($options['help'] or (!$options['list'] and !$options['execute'])) {
  51      $help =
  52      "Scheduled cron tasks.
  53  
  54      Options:
  55      --execute=\\some\\task  Execute scheduled task manually
  56      --list                List all scheduled tasks
  57      --showsql             Show sql queries before they are executed
  58      --showdebugging       Show developer level debugging information
  59      -h, --help            Print out this help
  60      -f, --force           Execute task even if cron is disabled
  61  
  62      Example:
  63      \$sudo -u www-data /usr/bin/php admin/cli/scheduled_task.php --execute=\\core\\task\\session_cleanup_task
  64  
  65      ";
  66  
  67      echo $help;
  68      die;
  69  }
  70  
  71  if ($options['showdebugging'] || !empty($CFG->showcrondebugging)) {
  72      set_debugging(DEBUG_DEVELOPER, true);
  73  }
  74  
  75  if ($options['showsql'] || !empty($CFG->showcronsql)) {
  76      $DB->set_debug(true);
  77  }
  78  if ($options['list']) {
  79      cli_heading("List of scheduled tasks ($CFG->wwwroot)");
  80  
  81      $shorttime = get_string('strftimedatetimeshort');
  82  
  83      $tasks = \core\task\manager::get_all_scheduled_tasks();
  84      echo str_pad(get_string('scheduledtasks', 'tool_task'), 50, ' ') . ' ' . str_pad(get_string('runpattern', 'tool_task'), 17, ' ')
  85          . ' ' . str_pad(get_string('lastruntime', 'tool_task'), 40, ' ') . get_string('nextruntime', 'tool_task') . "\n";
  86      foreach ($tasks as $task) {
  87          $class = '\\' . get_class($task);
  88          $schedule = $task->get_minute() . ' '
  89              . $task->get_hour() . ' '
  90              . $task->get_day() . ' '
  91              . $task->get_day_of_week() . ' '
  92              . $task->get_month() . ' '
  93              . $task->get_day_of_week();
  94          $nextrun = $task->get_next_run_time();
  95          $lastrun = $task->get_last_run_time();
  96  
  97          $plugininfo = core_plugin_manager::instance()->get_plugin_info($task->get_component());
  98          $plugindisabled = $plugininfo && $plugininfo->is_enabled() === false && !$task->get_run_if_component_disabled();
  99  
 100          if ($plugindisabled) {
 101              $nextrun = get_string('plugindisabled', 'tool_task');
 102          } else if ($task->get_disabled()) {
 103              $nextrun = get_string('taskdisabled', 'tool_task');
 104          } else if ($nextrun > time()) {
 105              $nextrun = userdate($nextrun);
 106          } else {
 107              $nextrun = get_string('asap', 'tool_task');
 108          }
 109  
 110          if ($lastrun) {
 111              $lastrun = userdate($lastrun);
 112          } else {
 113              $lastrun = get_string('never');
 114          }
 115  
 116          echo str_pad($class, 50, ' ') . ' ' . str_pad($schedule, 17, ' ') .
 117              ' ' . str_pad($lastrun, 40, ' ') . ' ' . $nextrun . "\n";
 118      }
 119      exit(0);
 120  }
 121  
 122  if ($execute = $options['execute']) {
 123      if (!$task = \core\task\manager::get_scheduled_task($execute)) {
 124          mtrace("Task '$execute' not found");
 125          exit(1);
 126      }
 127  
 128      if (moodle_needs_upgrading()) {
 129          mtrace("Moodle upgrade pending, cannot execute tasks.");
 130          exit(1);
 131      }
 132  
 133      if (!get_config('core', 'cron_enabled') && !$options['force']) {
 134          mtrace('Cron is disabled. Use --force to override.');
 135          exit(1);
 136      }
 137  
 138      \core\task\manager::scheduled_task_starting($task);
 139  
 140      // Increase memory limit.
 141      raise_memory_limit(MEMORY_EXTRA);
 142  
 143      // Emulate normal session - we use admin account by default.
 144      \core\cron::setup_user();
 145  
 146      // Execute the task.
 147      \core\local\cli\shutdown::script_supports_graceful_exit();
 148      $cronlockfactory = \core\lock\lock_config::get_lock_factory('cron');
 149      if (!$cronlock = $cronlockfactory->get_lock('core_cron', 10)) {
 150          mtrace('Cannot obtain cron lock');
 151          exit(129);
 152      }
 153      if (!$lock = $cronlockfactory->get_lock('\\' . get_class($task), 10)) {
 154          $cronlock->release();
 155          mtrace('Cannot obtain task lock');
 156          exit(130);
 157      }
 158  
 159      $task->set_lock($lock);
 160      if (!$task->is_blocking()) {
 161          $cronlock->release();
 162      } else {
 163          $task->set_cron_lock($cronlock);
 164      }
 165  
 166      \core\cron::run_inner_scheduled_task($task);
 167  }