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<?php
/**
* Reports the hostname of a replica DB server.
*
* 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
*
* @file
* @ingroup Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that reports the hostname of a replica DB server.
*
* @ingroup Maintenance
*/
class GetSlaveServer extends Maintenance {
public function __construct() {
parent::__construct();
$this->addOption( "group", "Query group to check specifically" );
$this->addDescription( 'Report the hostname of a replica DB server' );
}
public function execute() {
global $wgAllDBsAreLocalhost;
if ( $wgAllDBsAreLocalhost ) {
$host = 'localhost';
} elseif ( $this->hasOption( 'group' ) ) {
$db = $this->getDB( DB_REPLICA, $this->getOption( 'group' ) );
$host = $db->getServer();
} else {
$lb = wfGetLB();
$i = $lb->getReaderIndex();
$host = $lb->getServerName( $i );
}
$this->output( "$host\n" );
}
}
$maintClass = GetSlaveServer::class;
require_once RUN_MAINTENANCE_IF_MAIN;
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