mod/worker.php

   1 <?php
   2 /**
   3  * @file mod/worker.php
   4  * @brief Module for running the worker as frontend process
   5  */
   6
   7 use Friendica\Core\Config;
   8 use Friendica\Core\Logger;
   9 use Friendica\Core\Worker;
  10 use Friendica\Database\DBA;
  11 use Friendica\Util\DateTimeFormat;
  12
  13 function worker_init()
  14 {
  15
  16         if (!Config::get("system", "frontend_worker")) {
  17                 return;
  18         }
  19
  20         // Ensure that all "strtotime" operations do run timezone independent
  21         date_default_timezone_set('UTC');
  22
  23         // We don't need the following lines if we can execute background jobs.
  24         // So we just wake up the worker if it sleeps.
  25         if (function_exists("proc_open")) {
  26                 Worker::executeIfIdle();
  27                 return;
  28         }
  29
  30         Worker::clearProcesses();
  31
  32         $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'worker.php'");
  33
  34         if ($workers[0]["processes"] > Config::get("system", "worker_queues", 4)) {
  35                 return;
  36         }
  37
  38         Worker::startProcess();
  39
  40         Logger::log("Front end worker started: ".getmypid());
  41
  42         Worker::callWorker();
  43
  44         if ($r = Worker::workerProcess()) {
  45                 // On most configurations this parameter wouldn't have any effect.
  46                 // But since it doesn't destroy anything, we just try to get more execution time in any way.
  47                 set_time_limit(0);
  48
  49                 $fields = ['executed' => DateTimeFormat::utcNow(), 'pid' => getmypid(), 'done' => false];
  50                 $condition =  ['id' => $r[0]["id"], 'pid' => 0];
  51                 if (DBA::update('workerqueue', $fields, $condition)) {
  52                         Worker::execute($r[0]);
  53                 }
  54         }
  55
  56         Worker::callWorker();
  57
  58         Worker::unclaimProcess();
  59
  60         Worker::endProcess();
  61
  62         Logger::log("Front end worker ended: ".getmypid());
  63
  64         exit();
  65 }