showJobs.php

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<?php
require_once( __DIR__ . '/Maintenance.php' );

class ShowJobs extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Show number of jobs waiting in master database";
                $this->addOption( 'group', 'Show number of jobs per job type' );
        }
        public function execute() {
                $dbw = wfGetDB( DB_MASTER );
                if ( $this->hasOption( 'group' ) ) {
                        $res = $dbw->select(
                                'job',
                                array( 'job_cmd', 'count(*) as count' ),
                                array(),
                                __METHOD__,
                                array( 'GROUP BY' => 'job_cmd' )
                        );
                        foreach ( $res as $row ) {
                                $this->output( $row->job_cmd . ': ' . $row->count . "\n" );
                        }
                } else {
                        $this->output( $dbw->selectField( 'job', 'count(*)', '', __METHOD__ ) . "\n" );
                }
        }
}

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