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<?php
/**
* Remove old objects from the parser cache.
* This only works when the parser cache is in an SQL database.
*
* 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 Maintenance
*/
require __DIR__ . '/Maintenance.php';
/**
* Maintenance script to remove old objects from the parser cache.
*
* @ingroup Maintenance
*/
class PurgeParserCache extends Maintenance {
public $lastProgress;
function __construct() {
parent::__construct();
$this->addDescription( "Remove old objects from the parser cache. " .
"This only works when the parser cache is in an SQL database." );
$this->addOption( 'expiredate', 'Delete objects expiring before this date.', false, true );
$this->addOption(
'age',
'Delete objects created more than this many seconds ago, assuming $wgParserCacheExpireTime ' .
'has been consistent.',
false, true );
}
function execute() {
$inputDate = $this->getOption( 'expiredate' );
$inputAge = $this->getOption( 'age' );
if ( $inputDate !== null ) {
$date = wfTimestamp( TS_MW, strtotime( $inputDate ) );
} elseif ( $inputAge !== null ) {
global $wgParserCacheExpireTime;
$date = wfTimestamp( TS_MW, time() + $wgParserCacheExpireTime - intval( $inputAge ) );
} else {
$this->error( "Must specify either --expiredate or --age", 1 );
}
$english = Language::factory( 'en' );
$this->output( "Deleting objects expiring before " . $english->timeanddate( $date ) . "\n" );
$pc = wfGetParserCacheStorage();
$success = $pc->deleteObjectsExpiringBefore( $date, array( $this, 'showProgress' ) );
if ( !$success ) {
$this->error( "\nCannot purge this kind of parser cache.", 1 );
}
$this->showProgress( 100 );
$this->output( "\nDone\n" );
}
function showProgress( $percent ) {
$percentString = sprintf( "%.2f", $percent );
if ( $percentString === $this->lastProgress ) {
return;
}
$this->lastProgress = $percentString;
$stars = floor( $percent / 2 );
$this->output( '[' . str_repeat( '*', $stars ) . str_repeat( '.', 50 - $stars ) . '] ' .
"$percentString%\r" );
}
}
$maintClass = 'PurgeParserCache';
require_once RUN_MAINTENANCE_IF_MAIN;
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