115 lines
2.6 KiB
PHP
115 lines
2.6 KiB
PHP
<?php
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/**
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* Simple generator of database connections that always returns the same object.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Database
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*/
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/**
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* An LBFactory class that always returns a single database object.
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*/
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class LBFactorySingle extends LBFactory {
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protected $lb;
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/**
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* @param array $conf An associative array with one member:
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* - connection: The DatabaseBase connection object
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*/
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function __construct( $conf ) {
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$this->lb = new LoadBalancerSingle( $conf );
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}
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/**
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* @param $wiki bool|string
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*
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* @return LoadBalancerSingle
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*/
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function newMainLB( $wiki = false ) {
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return $this->lb;
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}
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/**
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* @param $wiki bool|string
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*
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* @return LoadBalancerSingle
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*/
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function getMainLB( $wiki = false ) {
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return $this->lb;
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}
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/**
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* @param $cluster
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* @param $wiki bool|string
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*
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* @return LoadBalancerSingle
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*/
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function newExternalLB( $cluster, $wiki = false ) {
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return $this->lb;
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}
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/**
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* @param $cluster
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* @param $wiki bool|string
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*
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* @return LoadBalancerSingle
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*/
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function &getExternalLB( $cluster, $wiki = false ) {
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return $this->lb;
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}
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/**
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* @param $callback string|array
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* @param $params array
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*/
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function forEachLB( $callback, $params = array() ) {
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call_user_func_array( $callback, array_merge( array( $this->lb ), $params ) );
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}
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}
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/**
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* Helper class for LBFactorySingle.
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*/
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class LoadBalancerSingle extends LoadBalancer {
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/** @var DatabaseBase */
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protected $db;
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/**
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* @param $params array
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*/
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function __construct( $params ) {
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$this->db = $params['connection'];
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parent::__construct( array( 'servers' => array( array(
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'type' => $this->db->getType(),
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'host' => $this->db->getServer(),
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'dbname' => $this->db->getDBname(),
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'load' => 1,
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) ) ) );
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}
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/**
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*
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* @param $server string
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* @param $dbNameOverride bool
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*
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* @return DatabaseBase
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*/
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function reallyOpenConnection( $server, $dbNameOverride = false ) {
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return $this->db;
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}
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}
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