107 lines
2.9 KiB
PHP
107 lines
2.9 KiB
PHP
<?php
|
|
/**
|
|
* Simple generator of database connections that always returns the same object.
|
|
*
|
|
* 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 Database
|
|
*/
|
|
|
|
namespace Wikimedia\Rdbms;
|
|
|
|
use InvalidArgumentException;
|
|
use BadMethodCallException;
|
|
|
|
/**
|
|
* An LBFactory class that always returns a single database object.
|
|
*/
|
|
class LBFactorySingle extends LBFactory {
|
|
/** @var LoadBalancerSingle */
|
|
private $lb;
|
|
|
|
/**
|
|
* @param array $conf An associative array with one member:
|
|
* - connection: The IDatabase connection object
|
|
*/
|
|
public function __construct( array $conf ) {
|
|
parent::__construct( $conf );
|
|
|
|
if ( !isset( $conf['connection'] ) ) {
|
|
throw new InvalidArgumentException( "Missing 'connection' argument." );
|
|
}
|
|
|
|
$lb = new LoadBalancerSingle( array_merge( $this->baseLoadBalancerParams(), $conf ) );
|
|
$this->initLoadBalancer( $lb );
|
|
$this->lb = $lb;
|
|
}
|
|
|
|
/**
|
|
* @param IDatabase $db Live connection handle
|
|
* @param array $params Parameter map to LBFactorySingle::__constructs()
|
|
* @return LBFactorySingle
|
|
* @since 1.28
|
|
*/
|
|
public static function newFromConnection( IDatabase $db, array $params = [] ) {
|
|
return new static( [ 'connection' => $db ] + $params );
|
|
}
|
|
|
|
/**
|
|
* @param bool|string $domain (unused)
|
|
* @return LoadBalancerSingle
|
|
*/
|
|
public function newMainLB( $domain = false ) {
|
|
return $this->lb;
|
|
}
|
|
|
|
/**
|
|
* @param bool|string $domain (unused)
|
|
* @return LoadBalancerSingle
|
|
*/
|
|
public function getMainLB( $domain = false ) {
|
|
return $this->lb;
|
|
}
|
|
|
|
public function newExternalLB( $cluster ) {
|
|
throw new BadMethodCallException( "Method is not supported." );
|
|
}
|
|
|
|
public function getExternalLB( $cluster ) {
|
|
throw new BadMethodCallException( "Method is not supported." );
|
|
}
|
|
|
|
/**
|
|
* @return LoadBalancerSingle[] Map of (cluster name => LoadBalancer)
|
|
*/
|
|
public function getAllMainLBs() {
|
|
return [ 'DEFAULT' => $this->lb ];
|
|
}
|
|
|
|
/**
|
|
* @return LoadBalancerSingle[] Map of (cluster name => LoadBalancer)
|
|
*/
|
|
public function getAllExternalLBs() {
|
|
return [];
|
|
}
|
|
|
|
/**
|
|
* @param string|callable $callback
|
|
* @param array $params
|
|
*/
|
|
public function forEachLB( $callback, array $params = [] ) {
|
|
call_user_func_array( $callback, array_merge( [ $this->lb ], $params ) );
|
|
}
|
|
}
|