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         // We don't need the following lines if we can execute background jobs.
  21         // So we just wake up the worker if it sleeps.
  22         if (function_exists("proc_open")) {
  23                 Worker::executeIfIdle();
  24                 return;
  25         }
  26
  27         Worker::clearProcesses();
  28
  29         $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'worker.php'");
  30
  31         if ($workers[0]["processes"] > Config::get("system", "worker_queues", 4)) {
  32                 return;
  33         }
  34
  35         Worker::startProcess();
  36
  37         Logger::log("Front end worker started: ".getmypid());
  38
  39         Worker::callWorker();
  40
  41         if ($r = Worker::workerProcess()) {
  42                 // On most configurations this parameter wouldn't have any effect.
  43                 // But since it doesn't destroy anything, we just try to get more execution time in any way.
  44                 set_time_limit(0);
  45
  46                 $fields = ['executed' => DateTimeFormat::utcNow(), 'pid' => getmypid(), 'done' => false];
  47                 $condition =  ['id' => $r[0]["id"], 'pid' => 0];
  48                 if (DBA::update('workerqueue', $fields, $condition)) {
  49                         Worker::execute($r[0]);
  50                 }
  51         }
  52
  53         Worker::callWorker();
  54
  55         Worker::unclaimProcess();
  56
  57         Worker::endProcess();
  58
  59         Logger::log("Front end worker ended: ".getmypid());
  60
  61         exit();
  62 }