MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / maintenance / getReplicaServer.php

diff --git a/maintenance/getReplicaServer.php b/maintenance/getReplicaServer.php
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+++ b/maintenance/getReplicaServer.php
@@ -0,0 +1,55 @@
+<?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";
+require_once RUN_MAINTENANCE_IF_MAIN;