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<?php
/**
* Prune file cache for pages, objects, resources, etc.
*
* 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_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that prunes file cache for pages, objects, resources, etc.
*
* @ingroup Maintenance
*/
class PruneFileCache extends Maintenance {
protected $minSurviveTimestamp;
public function __construct() {
parent::__construct();
$this->addDescription( 'Build file cache for content pages' );
$this->addOption( 'agedays', 'How many days old files must be in order to delete', true, true );
$this->addOption( 'subdir', 'Prune one $wgFileCacheDirectory subdirectory name', false, true );
}
public function execute() {
global $wgUseFileCache, $wgFileCacheDirectory;
if ( !$wgUseFileCache ) {
$this->error( "Nothing to do -- \$wgUseFileCache is disabled.", true );
}
$age = $this->getOption( 'agedays' );
if ( !ctype_digit( $age ) ) {
$this->error( "Non-integer 'age' parameter given.", true );
}
// Delete items with a TS older than this
$this->minSurviveTimestamp = time() - ( 86400 * $age );
$dir = $wgFileCacheDirectory;
if ( !is_dir( $dir ) ) {
$this->error( "Nothing to do -- \$wgFileCacheDirectory directory not found.", true );
}
$subDir = $this->getOption( 'subdir' );
if ( $subDir !== null ) {
if ( !is_dir( "$dir/$subDir" ) ) {
$this->error( "The specified subdirectory `$subDir` does not exist.", true );
}
$this->output( "Pruning `$dir/$subDir` directory...\n" );
$this->prune_directory( "$dir/$subDir", 'report' );
$this->output( "Done pruning `$dir/$subDir` directory\n" );
} else {
$this->output( "Pruning `$dir` directory...\n" );
// Note: don't prune things like .cdb files on the top level!
$this->prune_directory( $dir, 'report' );
$this->output( "Done pruning `$dir` directory\n" );
}
}
/**
* @param string $dir
* @param string|bool $report Use 'report' to report the directories being scanned
*/
protected function prune_directory( $dir, $report = false ) {
$tsNow = time();
$dirHandle = opendir( $dir );
while ( false !== ( $file = readdir( $dirHandle ) ) ) {
// Skip ".", "..", and also any dirs or files like ".svn" or ".htaccess"
if ( $file[0] != "." ) {
$path = $dir . '/' . $file; // absolute
if ( is_dir( $path ) ) {
if ( $report === 'report' ) {
$this->output( "Scanning `$path`...\n" );
}
$this->prune_directory( $path );
} else {
$mts = filemtime( $path );
// Sanity check the file extension against known cache types
if ( $mts < $this->minSurviveTimestamp
&& preg_match( '/\.(?:html|cache)(?:\.gz)?$/', $file )
&& unlink( $path )
) {
$daysOld = round( ( $tsNow - $mts ) / 86400, 2 );
$this->output( "Deleted `$path` [days=$daysOld]\n" );
}
}
}
}
closedir( $dirHandle );
}
}
$maintClass = "PruneFileCache";
require_once RUN_MAINTENANCE_IF_MAIN;