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
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<?php
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/**
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* Database factory class, this will determine whether to use the main database
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* or an external database defined in configuration file
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*/
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class MWEchoDbFactory {
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/**
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* Database loadbalancer
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*/
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private static $lb;
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/**
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* Database cache
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*/
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private static $cache = array();
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/**
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* Internal function for getting database loadbalancer, Echo database
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* can reside on extension1 db
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*
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* @param $wiki string The wiki ID, or false for the current wiki
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*/
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private static function initLB( $wiki ) {
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if ( self::$lb === null ) {
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global $wgEchoCluster;
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// Use the external db defined for Echo
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if ( $wgEchoCluster ) {
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self::$lb = wfGetLBFactory()->getExternalLB( $wgEchoCluster );
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} else {
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self::$lb = wfGetLB( $wiki );
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}
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}
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}
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/**
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* Wrapper function for wfGetDB
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*
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* @param $db int Index of the connection to get
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* @param $groups mixed Query groups.
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* @param $wiki string The wiki ID, or false for the current wiki
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* @return DatabaseBase
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*/
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public static function getDB( $db, $groups = array(), $wiki = false ) {
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if ( !isset( self::$cache[$db] ) ) {
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self::initLB( $wiki );
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self::$cache[$db] = self::$lb->getConnection( $db, $groups, $wiki );
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}
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return self::$cache[$db];
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}
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}
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