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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 */ // @codeCoverageIgnoreStart require_once __DIR__ . '/Maintenance.php'; // @codeCoverageIgnoreEnd /** * Maintenance script that reports the hostname of a replica DB server. * * @ingroup Maintenance */ class GetReplicaServer extends Maintenance { public function __construct() { parent::__construct(); $this->addOption( "group", "Query group to check specifically" ); $this->addOption( 'cluster', 'Use an external cluster by name', false, true ); $this->addDescription( 'Report the hostname of a replica DB server' ); } public function execute() { $lbf = $this->getServiceContainer()->getDBLoadBalancerFactory(); if ( $this->hasOption( 'cluster' ) ) { try { $lb = $lbf->getExternalLB( $this->getOption( 'cluster' ) ); } catch ( InvalidArgumentException $e ) { $this->fatalError( 'Error: ' . $e->getMessage() ); } } else { $lb = $lbf->getMainLB(); } $group = $this->getOption( 'group', false ); $index = $lb->getReaderIndex( $group ); if ( $index === false && $group ) { // retry without the group; it may not exist $index = $lb->getReaderIndex( false ); } if ( $index === false ) { $this->fatalError( 'Error: unable to get reader index' ); } $this->output( $lb->getServerName( $index ) . "\n" ); } } // @codeCoverageIgnoreStart $maintClass = GetReplicaServer::class; require_once RUN_MAINTENANCE_IF_MAIN; // @codeCoverageIgnoreEnd
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