runJobs.php

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<?php
require_once( dirname( __FILE__ ) . '/Maintenance.php' );

class RunJobs extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Run pending jobs";
                $this->addOption( 'maxjobs', 'Maximum number of jobs to run', false, true );
                $this->addOption( 'maxtime', 'Maximum amount of wall-clock time', false, true );
                $this->addOption( 'type', 'Type of job to run', false, true );
                $this->addOption( 'procs', 'Number of processes to use', false, true );
        }

        public function memoryLimit() {
                // Don't eat all memory on the machine if we get a bad job.
                return "150M";
        }

        public function execute() {
                global $wgTitle;
                if ( $this->hasOption( 'procs' ) ) {
                        $procs = intval( $this->getOption( 'procs' ) );
                        if ( $procs < 1 || $procs > 1000 ) {
                                $this->error( "Invalid argument to --procs", true );
                        }
                        $fc = new ForkController( $procs );
                        if ( $fc->start() != 'child' ) {
                                exit( 0 );
                        }
                }
                $maxJobs = $this->getOption( 'maxjobs', false );
                $maxTime = $this->getOption( 'maxtime', false );
                $startTime = time();
                $type = $this->getOption( 'type', false );
                $wgTitle = Title::newFromText( 'RunJobs.php' );
                $dbw = wfGetDB( DB_MASTER );
                $n = 0;
                $conds = '';
                if ( $type !== false ) {
                        $conds = "job_cmd = " . $dbw->addQuotes( $type );
                }

                while ( $dbw->selectField( 'job', 'job_id', $conds, 'runJobs.php' ) ) {
                        $offset = 0;
                        for ( ; ; ) {
                                $job = !$type ? Job::pop( $offset ) : Job::pop_type( $type );

                                if ( !$job ) {
                                        break;
                                }

                                wfWaitForSlaves();
                                $t = microtime( true );
                                $offset = $job->id;
                                $status = $job->run();
                                $t = microtime( true ) - $t;
                                $timeMs = intval( $t * 1000 );
                                if ( !$status ) {
                                        $this->runJobsLog( $job->toString() . " t=$timeMs error={$job->error}" );
                                } else {
                                        $this->runJobsLog( $job->toString() . " t=$timeMs good" );
                                }

                                if ( $maxJobs && ++$n > $maxJobs ) {
                                        break 2;
                                }
                                if ( $maxTime && time() - $startTime > $maxTime ) {
                                        break 2;
                                }
                        }
                }
        }

        private function runJobsLog( $msg ) {
                $this->output( wfTimestamp( TS_DB ) . " $msg\n" );
                wfDebugLog( 'runJobs', $msg );
        }
}

$maintClass = "RunJobs";
require_once( RUN_MAINTENANCE_IF_MAIN );