maintenance/pruneFileCache.php

   1 <?php
   2 /**
   3  * Prune file cache for pages, objects, resources, etc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 /**
  27  * Maintenance script that prunes file cache for pages, objects, resources, etc.
  28  *
  29  * @ingroup Maintenance
  30  */
  31 class PruneFileCache extends Maintenance {
  32
  33         protected $minSurviveTimestamp;
  34
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->addDescription( 'Build file cache for content pages' );
  38                 $this->addOption( 'agedays', 'How many days old files must be in order to delete', true, true );
  39                 $this->addOption( 'subdir', 'Prune one $wgFileCacheDirectory subdirectory name', false, true );
  40         }
  41
  42         public function execute() {
  43                 global $wgUseFileCache, $wgFileCacheDirectory;
  44
  45                 if ( !$wgUseFileCache ) {
  46                         $this->error( "Nothing to do -- \$wgUseFileCache is disabled.", true );
  47                 }
  48
  49                 $age = $this->getOption( 'agedays' );
  50                 if ( !ctype_digit( $age ) ) {
  51                         $this->error( "Non-integer 'age' parameter given.", true );
  52                 }
  53                 // Delete items with a TS older than this
  54                 $this->minSurviveTimestamp = time() - ( 86400 * $age );
  55
  56                 $dir = $wgFileCacheDirectory;
  57                 if ( !is_dir( $dir ) ) {
  58                         $this->error( "Nothing to do -- \$wgFileCacheDirectory directory not found.", true );
  59                 }
  60
  61                 $subDir = $this->getOption( 'subdir' );
  62                 if ( $subDir !== null ) {
  63                         if ( !is_dir( "$dir/$subDir" ) ) {
  64                                 $this->error( "The specified subdirectory `$subDir` does not exist.", true );
  65                         }
  66                         $this->output( "Pruning `$dir/$subDir` directory...\n" );
  67                         $this->prune_directory( "$dir/$subDir", 'report' );
  68                         $this->output( "Done pruning `$dir/$subDir` directory\n" );
  69                 } else {
  70                         $this->output( "Pruning `$dir` directory...\n" );
  71                         // Note: don't prune things like .cdb files on the top level!
  72                         $this->prune_directory( $dir, 'report' );
  73                         $this->output( "Done pruning `$dir` directory\n" );
  74                 }
  75         }
  76
  77         /**
  78          * @param string $dir
  79          * @param string|bool $report Use 'report' to report the directories being scanned
  80          */
  81         protected function prune_directory( $dir, $report = false ) {
  82                 $tsNow = time();
  83                 $dirHandle = opendir( $dir );
  84                 while ( false !== ( $file = readdir( $dirHandle ) ) ) {
  85                         // Skip ".", "..", and also any dirs or files like ".svn" or ".htaccess"
  86                         if ( $file[0] != "." ) {
  87                                 $path = $dir . '/' . $file; // absolute
  88                                 if ( is_dir( $path ) ) {
  89                                         if ( $report === 'report' ) {
  90                                                 $this->output( "Scanning `$path`...\n" );
  91                                         }
  92                                         $this->prune_directory( $path );
  93                                 } else {
  94                                         $mts = filemtime( $path );
  95                                         // Sanity check the file extension against known cache types
  96                                         if ( $mts < $this->minSurviveTimestamp
  97                                                 && preg_match( '/\.(?:html|cache)(?:\.gz)?$/', $file )
  98                                                 && unlink( $path )
  99                                         ) {
 100                                                 $daysOld = round( ( $tsNow - $mts ) / 86400, 2 );
 101                                                 $this->output( "Deleted `$path` [days=$daysOld]\n" );
 102                                         }
 103                                 }
 104                         }
 105                 }
 106                 closedir( $dirHandle );
 107         }
 108 }
 109
 110 $maintClass = "PruneFileCache";
 111 require_once RUN_MAINTENANCE_IF_MAIN;