Current File : /www/varak.net/wiki.varak.net/includes/filerepo/ForeignDBViaLBRepo.php
<?php
/**
* A foreign repository with a MediaWiki database accessible via the configured LBFactory.
*
* 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 FileRepo
*/
use MediaWiki\MediaWikiServices;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\LoadBalancer;
/**
* A foreign repository with a MediaWiki database accessible via the configured LBFactory
*
* @ingroup FileRepo
*/
class ForeignDBViaLBRepo extends LocalRepo {
/** @var string */
protected $wiki;
/** @var string */
protected $dbName;
/** @var string */
protected $tablePrefix;
/** @var array */
protected $fileFactory = [ ForeignDBFile::class, 'newFromTitle' ];
/** @var array */
protected $fileFromRowFactory = [ ForeignDBFile::class, 'newFromRow' ];
/** @var bool */
protected $hasSharedCache;
/**
* @param array|null $info
*/
function __construct( $info ) {
parent::__construct( $info );
$this->wiki = $info['wiki'];
list( $this->dbName, $this->tablePrefix ) = wfSplitWikiID( $this->wiki );
$this->hasSharedCache = $info['hasSharedCache'];
}
/**
* @return IDatabase
*/
function getMasterDB() {
return $this->getDBLoadBalancer()->getConnectionRef( DB_MASTER, [], $this->wiki );
}
/**
* @return IDatabase
*/
function getReplicaDB() {
return $this->getDBLoadBalancer()->getConnectionRef( DB_REPLICA, [], $this->wiki );
}
/**
* @return Closure
*/
protected function getDBFactory() {
return function ( $index ) {
return $this->getDBLoadBalancer()->getConnectionRef( $index, [], $this->wiki );
};
}
/**
* @return LoadBalancer
*/
protected function getDBLoadBalancer() {
$lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
return $lbFactory->getMainLB( $this->wiki );
}
function hasSharedCache() {
return $this->hasSharedCache;
}
/**
* Get a key on the primary cache for this repository.
* Returns false if the repository's cache is not accessible at this site.
* The parameters are the parts of the key, as for wfMemcKey().
* @return bool|string
*/
function getSharedCacheKey( /*...*/ ) {
if ( $this->hasSharedCache() ) {
$args = func_get_args();
array_unshift( $args, $this->wiki );
return implode( ':', $args );
} else {
return false;
}
}
protected function assertWritableRepo() {
throw new MWException( static::class . ': write operations are not supported.' );
}
public function getInfo() {
return FileRepo::getInfo();
}
}
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