mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
synced 2024-09-03 19:46:05 +02:00
129 lines
3.5 KiB
PHP
129 lines
3.5 KiB
PHP
<?php
|
|
/**
|
|
* Interface and manager for deferred updates.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* Interface that deferrable updates should implement. Basically required so we
|
|
* can validate input on DeferredUpdates::addUpdate()
|
|
*
|
|
* @since 1.19
|
|
*/
|
|
interface DeferrableUpdate {
|
|
/**
|
|
* Perform the actual work
|
|
*/
|
|
function doUpdate();
|
|
}
|
|
|
|
/**
|
|
* Class for managing the deferred updates.
|
|
*
|
|
* @since 1.19
|
|
*/
|
|
class DeferredUpdates {
|
|
/**
|
|
* Store of updates to be deferred until the end of the request.
|
|
*/
|
|
private static $updates = array();
|
|
|
|
/**
|
|
* Add an update to the deferred list
|
|
* @param $update DeferrableUpdate Some object that implements doUpdate()
|
|
*/
|
|
public static function addUpdate( DeferrableUpdate $update ) {
|
|
array_push( self::$updates, $update );
|
|
}
|
|
|
|
/**
|
|
* HTMLCacheUpdates are the most common deferred update people use. This
|
|
* is a shortcut method for that.
|
|
* @see HTMLCacheUpdate::__construct()
|
|
* @param $title
|
|
* @param $table
|
|
*/
|
|
public static function addHTMLCacheUpdate( $title, $table ) {
|
|
self::addUpdate( new HTMLCacheUpdate( $title, $table ) );
|
|
}
|
|
|
|
/**
|
|
* Add a callable update. In a lot of cases, we just need a callback/closure,
|
|
* defining a new DeferrableUpdate object is not necessary
|
|
* @see MWCallableUpdate::__construct()
|
|
* @param callable $callable
|
|
*/
|
|
public static function addCallableUpdate( $callable ) {
|
|
self::addUpdate( new MWCallableUpdate( $callable ) );
|
|
}
|
|
|
|
/**
|
|
* Do any deferred updates and clear the list
|
|
*
|
|
* @param string $commit set to 'commit' to commit after every update to
|
|
* prevent lock contention
|
|
*/
|
|
public static function doUpdates( $commit = '' ) {
|
|
global $wgDeferredUpdateList;
|
|
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$updates = array_merge( $wgDeferredUpdateList, self::$updates );
|
|
|
|
// No need to get master connections in case of empty updates array
|
|
if ( !count( $updates ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return;
|
|
}
|
|
|
|
$doCommit = $commit == 'commit';
|
|
if ( $doCommit ) {
|
|
$dbw = wfGetDB( DB_MASTER );
|
|
}
|
|
|
|
foreach ( $updates as $update ) {
|
|
try {
|
|
$update->doUpdate();
|
|
|
|
if ( $doCommit && $dbw->trxLevel() ) {
|
|
$dbw->commit( __METHOD__, 'flush' );
|
|
}
|
|
} catch ( MWException $e ) {
|
|
// We don't want exceptions thrown during deferred updates to
|
|
// be reported to the user since the output is already sent.
|
|
// Instead we just log them.
|
|
if ( !$e instanceof ErrorPageError ) {
|
|
MWExceptionHandler::logException( $e );
|
|
}
|
|
}
|
|
}
|
|
|
|
self::clearPendingUpdates();
|
|
wfProfileOut( __METHOD__ );
|
|
}
|
|
|
|
/**
|
|
* Clear all pending updates without performing them. Generally, you don't
|
|
* want or need to call this. Unit tests need it though.
|
|
*/
|
|
public static function clearPendingUpdates() {
|
|
global $wgDeferredUpdateList;
|
|
$wgDeferredUpdateList = self::$updates = array();
|
|
}
|
|
}
|