maintenance/pruneFileCache.php

   1 <?php
   2 /**
   3  * Prune file cache for pages, objects, resources, ect...
   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  * @ingroup Maintenance
  21  */
  22
  23 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  24
  25 class PruneFileCache extends Maintenance {
  26
  27         protected $minSurviveTimestamp;
  28
  29         public function __construct() {
  30                 parent::__construct();
  31                 $this->mDescription = "Build file cache for content pages";
  32                 $this->addOption( 'agedays', 'How many days old files must be in order to delete', true, true );
  33                 $this->addOption( 'subdir', 'Prune one $wgFileCacheDirectory subdirectory name', false, true );
  34         }
  35
  36         public function execute() {
  37                 global $wgUseFileCache, $wgFileCacheDirectory;
  38
  39                 if ( !$wgUseFileCache ) {
  40                         $this->error( "Nothing to do -- \$wgUseFileCache is disabled.", true );
  41                 }
  42
  43                 $age = $this->getOption( 'agedays' );
  44                 if ( !ctype_digit( $age ) ) {
  45                         $this->error( "Non-integer 'age' parameter given.", true );
  46                 }
  47                 // Delete items with a TS older than this
  48                 $this->minSurviveTimestamp = time() - ( 86400 * $age );
  49
  50                 $dir = $wgFileCacheDirectory;
  51                 if ( !is_dir( $dir ) ) {
  52                         $this->error( "Nothing to do -- \$wgFileCacheDirectory directory not found.", true );
  53                 }
  54
  55                 $subDir = $this->getOption( 'subdir' );
  56                 if ( $subDir !== null ) {
  57                         if ( !is_dir( "$dir/$subDir" ) ) {
  58                                 $this->error( "The specified subdirectory `$subDir` does not exist.", true );
  59                         }
  60                         $this->output( "Pruning `$dir/$subDir` directory...\n" );
  61                         $this->prune_directory( "$dir/$subDir", 'report' );
  62                         $this->output( "Done pruning `$dir/$subDir` directory\n" );
  63                 } else {
  64                         $this->output( "Pruning `$dir` directory...\n" );
  65                         // Note: don't prune things like .cdb files on the top level!
  66                         $this->prune_directory( $dir, 'report' );
  67                         $this->output( "Done pruning `$dir` directory\n" );
  68                 }
  69         }
  70
  71         /**
  72          * @param $dir string
  73          * @param $report string|bool Use 'report' to report the directories being scanned
  74          */
  75         protected function prune_directory( $dir, $report = false ) {
  76                 $tsNow = time();
  77                 $dirHandle = opendir( $dir );
  78                 while ( false !== ( $file = readdir( $dirHandle ) ) ) {
  79                         // Skip ".", "..", and also any dirs or files like ".svn" or ".htaccess"
  80                         if ( $file[0] != "." ) {
  81                                 $path = $dir . '/' . $file; // absolute
  82                                 if ( is_dir( $path ) ) {
  83                                         if ( $report === 'report' ) {
  84                                                 $this->output( "Scanning `$path`...\n" );
  85                                         }
  86                                         $this->prune_directory( $path );
  87                                 } else {
  88                                         $mts = filemtime( $path );
  89                                         // Sanity check the file extension against known cache types
  90                                         if ( $mts < $this->minSurviveTimestamp
  91                                                 && preg_match( '/\.(?:html|cache)(?:\.gz)?$/', $file )
  92                                                 && unlink( $path ) )
  93                                         {
  94                                                 $daysOld = round( ( $tsNow - $mts ) / 86400, 2 );
  95                                                 $this->output( "Deleted `$path` [days=$daysOld]\n" );
  96                                         }
  97                                 }
  98                         }
  99                 }
 100                 closedir( $dirHandle );
 101         }
 102 }
 103
 104 $maintClass = "PruneFileCache";
 105 require_once( RUN_MAINTENANCE_IF_MAIN );