maintenance/runJobs.php

   1 <?php
   2 /**
   3  * Run pending jobs.
   4  *
   5  * Options:
   6  *  --maxjobs <num> (default 10000)
   7  *  --type <job_cmd>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  * @ingroup Maintenance
  26  */
  27
  28 require_once( __DIR__ . '/Maintenance.php' );
  29
  30 /**
  31  * Maintenance script that runs pending jobs.
  32  *
  33  * @ingroup Maintenance
  34  */
  35 class RunJobs extends Maintenance {
  36         public function __construct() {
  37                 parent::__construct();
  38                 $this->mDescription = "Run pending jobs";
  39                 $this->addOption( 'maxjobs', 'Maximum number of jobs to run', false, true );
  40                 $this->addOption( 'maxtime', 'Maximum amount of wall-clock time', false, true );
  41                 $this->addOption( 'type', 'Type of job to run', false, true );
  42                 $this->addOption( 'procs', 'Number of processes to use', false, true );
  43         }
  44
  45         public function memoryLimit() {
  46                 if ( $this->hasOption( 'memory-limit' ) ) {
  47                         return parent::memoryLimit();
  48                 }
  49                 // Don't eat all memory on the machine if we get a bad job.
  50                 return "150M";
  51         }
  52
  53         public function execute() {
  54                 global $wgTitle;
  55
  56                 if ( $this->hasOption( 'procs' ) ) {
  57                         $procs = intval( $this->getOption( 'procs' ) );
  58                         if ( $procs < 1 || $procs > 1000 ) {
  59                                 $this->error( "Invalid argument to --procs", true );
  60                         }
  61                         $fc = new ForkController( $procs );
  62                         if ( $fc->start() != 'child' ) {
  63                                 exit( 0 );
  64                         }
  65                 }
  66                 $maxJobs = $this->getOption( 'maxjobs', false );
  67                 $maxTime = $this->getOption( 'maxtime', false );
  68                 $startTime = time();
  69                 $type = $this->getOption( 'type', false );
  70                 $wgTitle = Title::newFromText( 'RunJobs.php' );
  71                 $dbw = wfGetDB( DB_MASTER );
  72                 $n = 0;
  73
  74                 $group = JobQueueGroup::singleton();
  75                 do {
  76                         $job = ( $type === false )
  77                                 ? $group->pop() // job from any queue
  78                                 : $group->get( $type )->pop(); // job from a single queue
  79                         if ( $job ) { // found a job
  80                                 // Perform the job (logging success/failure and runtime)...
  81                                 $t = microtime( true );
  82                                 $this->runJobsLog( $job->toString() . " STARTING" );
  83                                 $status = $job->run();
  84                                 $group->ack( $job ); // done
  85                                 $t = microtime( true ) - $t;
  86                                 $timeMs = intval( $t * 1000 );
  87                                 if ( !$status ) {
  88                                         $this->runJobsLog( $job->toString() . " t=$timeMs error={$job->error}" );
  89                                 } else {
  90                                         $this->runJobsLog( $job->toString() . " t=$timeMs good" );
  91                                 }
  92                                 // Break out if we hit the job count or wall time limits...
  93                                 if ( $maxJobs && ++$n >= $maxJobs ) {
  94                                         break;
  95                                 }
  96                                 if ( $maxTime && ( time() - $startTime ) > $maxTime ) {
  97                                         break;
  98                                 }
  99                                 // Don't let any slaves/backups fall behind...
 100                                 $group->get( $type )->waitForBackups();
 101                         }
 102                 } while ( $job ); // stop when there are no jobs
 103         }
 104
 105         /**
 106          * Log the job message
 107          * @param $msg String The message to log
 108          */
 109         private function runJobsLog( $msg ) {
 110                 $this->output( wfTimestamp( TS_DB ) . " $msg\n" );
 111                 wfDebugLog( 'runJobs', $msg );
 112         }
 113 }
 114
 115 $maintClass = "RunJobs";
 116 require_once( RUN_MAINTENANCE_IF_MAIN );