+++ /dev/null
-<?php
-/**
- * Pick a database that has pending jobs
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @todo Make this work on PostgreSQL and maybe other database servers
- * @ingroup Maintenance
- */
-
-require_once( dirname( __FILE__ ) . '/Maintenance.php' );
-
-class nextJobDB extends Maintenance {
- public function __construct() {
- parent::__construct();
- $this->mDescription = "Pick a database that has pending jobs";
- $this->addOption( 'type', "The type of job to search for", false, true );
- }
-
- public function execute() {
- global $wgMemc;
- $type = $this->getOption( 'type', false );
- $mckey = $type === false
- ? "jobqueue:dbs"
- : "jobqueue:dbs:$type";
- $pendingDBs = $wgMemc->get( $mckey );
-
- # If we didn't get it from the cache
- if ( !$pendingDBs ) {
- $pendingDBs = $this->getPendingDbs( $type );
- $wgMemc->set( $mckey, $pendingDBs, 300 );
- }
- # If we've got a pending job in a db, display it.
- if ( $pendingDBs ) {
- $this->output( $pendingDBs[mt_rand( 0, count( $pendingDBs ) - 1 )] );
- }
- }
-
- /**
- * Get all databases that have a pending job
- * @param $type String Job type
- * @return array
- */
- private function getPendingDbs( $type ) {
- global $wgLocalDatabases;
- $pendingDBs = array();
- # Cross-reference DBs by master DB server
- $dbsByMaster = array();
- foreach ( $wgLocalDatabases as $db ) {
- $lb = wfGetLB( $db );
- $dbsByMaster[$lb->getServerName( 0 )][] = $db;
- }
-
- foreach ( $dbsByMaster as $dbs ) {
- $dbConn = wfGetDB( DB_MASTER, array(), $dbs[0] );
- $stype = $dbConn->addQuotes( $type );
-
- # Padding row for MySQL bug
- $sql = "(SELECT '-------------------------------------------' as db)";
- foreach ( $dbs as $wikiId ) {
- if ( $sql != '' ) {
- $sql .= ' UNION ';
- }
-
- list( $dbName, $tablePrefix ) = wfSplitWikiID( $wikiId );
- $dbConn->tablePrefix( $tablePrefix );
- $jobTable = $dbConn->tableName( 'job' );
-
- if ( $type === false )
- $sql .= "(SELECT '$wikiId' as db FROM $dbName.$jobTable LIMIT 1)";
- else
- $sql .= "(SELECT '$wikiId' as db FROM $dbName.$jobTable WHERE job_cmd=$stype LIMIT 1)";
- }
- $res = $dbConn->query( $sql, __METHOD__ );
- $first = true;
- foreach ( $res as $row ) {
- if ( $first ) {
- // discard padding row
- $first = false;
- continue;
- }
- $pendingDBs[] = $row->db;
- }
- }
- return $pendingDBs;
- }
-}
-
-$maintClass = "nextJobDb";
-require_once( RUN_MAINTENANCE_IF_MAIN );