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<?php
/**
* Pick a database that has pending jobs
*
* @file
* @ingroup Maintenance
*/
$options = array( 'type' );
require_once( 'commandLine.inc' );
$type = isset($options['type'])
? $options['type']
: false;
$mckey = $type === false
? "jobqueue:dbs"
: "jobqueue:dbs:$type";
$pendingDBs = $wgMemc->get( $mckey );
if ( !$pendingDBs ) {
$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 $master => $dbs ) {
$dbConn = wfGetDB( DB_MASTER, array(), $dbs[0] );
$stype = $dbConn->addQuotes($type);
# Padding row for MySQL bug
$sql = "(SELECT '-------------------------------------------')";
foreach ( $dbs as $dbName ) {
if ( $sql != '' ) {
$sql .= ' UNION ';
}
if ($type === false)
$sql .= "(SELECT '$dbName' FROM `$dbName`.job LIMIT 1)";
else
$sql .= "(SELECT '$dbName' FROM `$dbName`.job WHERE job_cmd=$stype LIMIT 1)";
}
$res = $dbConn->query( $sql, 'nextJobDB.php' );
$row = $dbConn->fetchRow( $res ); // discard padding row
while ( $row = $dbConn->fetchRow( $res ) ) {
$pendingDBs[] = $row[0];
}
}
$wgMemc->set( $mckey, $pendingDBs, 300 );
}
if ( $pendingDBs ) {
echo $pendingDBs[mt_rand(0, count( $pendingDBs ) - 1)];
}
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