%PDF-
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Mini Shell
Mini Shell
<?php
/**
* Generator of database load balancing objects.
*
* 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
*/
use MediaWiki\Logger\LoggerFactory;
/**
* Legacy MediaWiki-specific class for generating database load balancers
* @ingroup Database
*/
abstract class LBFactoryMW {
/**
* @param array $lbConf Config for LBFactory::__construct()
* @param Config $mainConfig Main config object from MediaWikiServices
* @return array
*/
public static function applyDefaultConfig( array $lbConf, Config $mainConfig ) {
global $wgCommandLineMode;
$lbConf += [
'localDomain' => new DatabaseDomain(
$mainConfig->get( 'DBname' ),
null,
$mainConfig->get( 'DBprefix' )
),
'profiler' => Profiler::instance(),
'trxProfiler' => Profiler::instance()->getTransactionProfiler(),
'replLogger' => LoggerFactory::getInstance( 'DBReplication' ),
'queryLogger' => LoggerFactory::getInstance( 'DBQuery' ),
'connLogger' => LoggerFactory::getInstance( 'DBConnection' ),
'perfLogger' => LoggerFactory::getInstance( 'DBPerformance' ),
'errorLogger' => [ MWExceptionHandler::class, 'logException' ],
'cliMode' => $wgCommandLineMode,
'hostname' => wfHostname(),
// TODO: replace the global wfConfiguredReadOnlyReason() with a service.
'readOnlyReason' => wfConfiguredReadOnlyReason(),
];
if ( $lbConf['class'] === 'LBFactorySimple' ) {
if ( isset( $lbConf['servers'] ) ) {
// Server array is already explicitly configured; leave alone
} elseif ( is_array( $mainConfig->get( 'DBservers' ) ) ) {
foreach ( $mainConfig->get( 'DBservers' ) as $i => $server ) {
if ( $server['type'] === 'sqlite' ) {
$server += [ 'dbDirectory' => $mainConfig->get( 'SQLiteDataDir' ) ];
} elseif ( $server['type'] === 'postgres' ) {
$server += [ 'port' => $mainConfig->get( 'DBport' ) ];
}
$lbConf['servers'][$i] = $server + [
'schema' => $mainConfig->get( 'DBmwschema' ),
'tablePrefix' => $mainConfig->get( 'DBprefix' ),
'flags' => DBO_DEFAULT,
'sqlMode' => $mainConfig->get( 'SQLMode' ),
'utf8Mode' => $mainConfig->get( 'DBmysql5' )
];
}
} else {
$flags = DBO_DEFAULT;
$flags |= $mainConfig->get( 'DebugDumpSql' ) ? DBO_DEBUG : 0;
$flags |= $mainConfig->get( 'DBssl' ) ? DBO_SSL : 0;
$flags |= $mainConfig->get( 'DBcompress' ) ? DBO_COMPRESS : 0;
$server = [
'host' => $mainConfig->get( 'DBserver' ),
'user' => $mainConfig->get( 'DBuser' ),
'password' => $mainConfig->get( 'DBpassword' ),
'dbname' => $mainConfig->get( 'DBname' ),
'schema' => $mainConfig->get( 'DBmwschema' ),
'tablePrefix' => $mainConfig->get( 'DBprefix' ),
'type' => $mainConfig->get( 'DBtype' ),
'load' => 1,
'flags' => $flags,
'sqlMode' => $mainConfig->get( 'SQLMode' ),
'utf8Mode' => $mainConfig->get( 'DBmysql5' )
];
if ( $server['type'] === 'sqlite' ) {
$server[ 'dbDirectory'] = $mainConfig->get( 'SQLiteDataDir' );
} elseif ( $server['type'] === 'postgres' ) {
$server['port'] = $mainConfig->get( 'DBport' );
}
$lbConf['servers'] = [ $server ];
}
if ( !isset( $lbConf['externalClusters'] ) ) {
$lbConf['externalClusters'] = $mainConfig->get( 'ExternalServers' );
}
} elseif ( $lbConf['class'] === 'LBFactoryMulti' ) {
if ( isset( $lbConf['serverTemplate'] ) ) {
$lbConf['serverTemplate']['schema'] = $mainConfig->get( 'DBmwschema' );
$lbConf['serverTemplate']['sqlMode'] = $mainConfig->get( 'SQLMode' );
$lbConf['serverTemplate']['utf8Mode'] = $mainConfig->get( 'DBmysql5' );
}
}
// Use APC/memcached style caching, but avoids loops with CACHE_DB (T141804)
$sCache = ObjectCache::getLocalServerInstance();
if ( $sCache->getQoS( $sCache::ATTR_EMULATION ) > $sCache::QOS_EMULATION_SQL ) {
$lbConf['srvCache'] = $sCache;
}
$cCache = ObjectCache::getLocalClusterInstance();
if ( $cCache->getQoS( $cCache::ATTR_EMULATION ) > $cCache::QOS_EMULATION_SQL ) {
$lbConf['memCache'] = $cCache;
}
$wCache = ObjectCache::getMainWANInstance();
if ( $wCache->getQoS( $wCache::ATTR_EMULATION ) > $wCache::QOS_EMULATION_SQL ) {
$lbConf['wanCache'] = $wCache;
}
return $lbConf;
}
/**
* Returns the LBFactory class to use and the load balancer configuration.
*
* @todo instead of this, use a ServiceContainer for managing the different implementations.
*
* @param array $config (e.g. $wgLBFactoryConf)
* @return string Class name
*/
public static function getLBFactoryClass( array $config ) {
// For configuration backward compatibility after removing
// underscores from class names in MediaWiki 1.23.
$bcClasses = [
'LBFactory_Simple' => 'LBFactorySimple',
'LBFactory_Single' => 'LBFactorySingle',
'LBFactory_Multi' => 'LBFactoryMulti'
];
$class = $config['class'];
if ( isset( $bcClasses[$class] ) ) {
$class = $bcClasses[$class];
wfDeprecated(
'$wgLBFactoryConf must be updated. See RELEASE-NOTES for details',
'1.23'
);
}
return $class;
}
}
Zerion Mini Shell 1.0