maintenance/runJobs.php

   1 <?php
   2 /**
   3  * This script starts pending jobs.
   4  *
   5  * Usage:
   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  * @ingroup Maintenance
  25  */
  26
  27 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  28
  29 class RunJobs extends Maintenance {
  30         public function __construct() {
  31                 parent::__construct();
  32                 $this->mDescription = "Run pending jobs";
  33                 $this->addOption( 'maxjobs', 'Maximum number of jobs to run', false, true );
  34                 $this->addOption( 'maxtime', 'Maximum amount of wall-clock time', false, true );
  35                 $this->addOption( 'type', 'Type of job to run', false, true );
  36                 $this->addOption( 'procs', 'Number of processes to use', false, true );
  37         }
  38
  39         public function memoryLimit() {
  40                 // Don't eat all memory on the machine if we get a bad job.
  41                 return "150M";
  42         }
  43
  44         public function execute() {
  45                 global $wgTitle;
  46                 if ( $this->hasOption( 'procs' ) ) {
  47                         $procs = intval( $this->getOption( 'procs' ) );
  48                         if ( $procs < 1 || $procs > 1000 ) {
  49                                 $this->error( "Invalid argument to --procs", true );
  50                         }
  51                         $fc = new ForkController( $procs );
  52                         if ( $fc->start() != 'child' ) {
  53                                 exit( 0 );
  54                         }
  55                 }
  56                 $maxJobs = $this->getOption( 'maxjobs', false );
  57                 $maxTime = $this->getOption( 'maxtime', false );
  58                 $startTime = time();
  59                 $type = $this->getOption( 'type', false );
  60                 $wgTitle = Title::newFromText( 'RunJobs.php' );
  61                 $dbw = wfGetDB( DB_MASTER );
  62                 $n = 0;
  63                 $conds = '';
  64                 if ( $type !== false ) {
  65                         $conds = "job_cmd = " . $dbw->addQuotes( $type );
  66                 }
  67
  68                 while ( $dbw->selectField( 'job', 'job_id', $conds, 'runJobs.php' ) ) {
  69                         $offset = 0;
  70                         for ( ; ; ) {
  71                                 $job = !$type ? Job::pop( $offset ) : Job::pop_type( $type );
  72
  73                                 if ( !$job ) {
  74                                         break;
  75                                 }
  76
  77                                 wfWaitForSlaves();
  78                                 $t = microtime( true );
  79                                 $offset = $job->id;
  80                                 $status = $job->run();
  81                                 $t = microtime( true ) - $t;
  82                                 $timeMs = intval( $t * 1000 );
  83                                 if ( !$status ) {
  84                                         $this->runJobsLog( $job->toString() . " t=$timeMs error={$job->error}" );
  85                                 } else {
  86                                         $this->runJobsLog( $job->toString() . " t=$timeMs good" );
  87                                 }
  88
  89                                 if ( $maxJobs && ++$n > $maxJobs ) {
  90                                         break 2;
  91                                 }
  92                                 if ( $maxTime && time() - $startTime > $maxTime ) {
  93                                         break 2;
  94                                 }
  95                         }
  96                 }
  97         }
  98
  99         /**
 100          * Log the job message
 101          * @param $msg String The message to log
 102          */
 103         private function runJobsLog( $msg ) {
 104                 $this->output( wfTimestamp( TS_DB ) . " $msg\n" );
 105                 wfDebugLog( 'runJobs', $msg );
 106         }
 107 }
 108
 109 $maintClass = "RunJobs";
 110 require_once( RUN_MAINTENANCE_IF_MAIN );