mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Echo
synced 2024-11-24 07:54:13 +00:00
57 lines
1.2 KiB
PHP
57 lines
1.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Database factory class, this will determine whether to use the main database
|
|
* or an external database defined in configuration file
|
|
*/
|
|
class MWEchoDbFactory {
|
|
|
|
/**
|
|
* Database loadbalancer
|
|
*/
|
|
private static $lb;
|
|
|
|
/**
|
|
* Database cache
|
|
*/
|
|
private static $cache = array();
|
|
|
|
/**
|
|
* Internal function for getting database loadbalancer, Echo database
|
|
* can reside on extension1 db
|
|
*
|
|
* @param $wiki string The wiki ID, or false for the current wiki
|
|
*/
|
|
private static function initLB( $wiki ) {
|
|
if ( self::$lb === null ) {
|
|
global $wgEchoCluster;
|
|
|
|
// Use the external db defined for Echo
|
|
if ( $wgEchoCluster ) {
|
|
self::$lb = wfGetLBFactory()->getExternalLB( $wgEchoCluster );
|
|
} else {
|
|
self::$lb = wfGetLB( $wiki );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Wrapper function for wfGetDB
|
|
*
|
|
* @param $db int Index of the connection to get
|
|
* @param $groups mixed Query groups.
|
|
* @param $wiki string The wiki ID, or false for the current wiki
|
|
* @return DatabaseBase
|
|
*/
|
|
public static function getDB( $db, $groups = array(), $wiki = false ) {
|
|
if ( !isset( self::$cache[$db] ) ) {
|
|
self::initLB( $wiki );
|
|
|
|
self::$cache[$db] = self::$lb->getConnection( $db, $groups, $wiki );
|
|
}
|
|
|
|
return self::$cache[$db];
|
|
}
|
|
|
|
}
|