maintenance/deleteArchivedFiles.inc

   1 <?php
   2 /**
   3  * Core functions for deleteArchivedFiles.php
   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 /**
  25  * Core functions for deleteArchivedFiles.php
  26  *
  27  * @ingroup Maintenance
  28  */
  29 class DeleteArchivedFilesImplementation {
  30         public static function doDelete( $output, $force ) {
  31                 # Data should come off the master, wrapped in a transaction
  32                 $dbw = wfGetDB( DB_MASTER );
  33                 $dbw->begin( __METHOD__ );
  34                 $tbl_arch = $dbw->tableName( 'filearchive' );
  35                 $repo = RepoGroup::singleton()->getLocalRepo();
  36                 # Get "active" revisions from the filearchive table
  37                 $output->handleOutput( "Searching for and deleting archived files...\n" );
  38                 $res = $dbw->query( "SELECT fa_id,fa_storage_group,fa_storage_key,fa_sha1 FROM $tbl_arch" );
  39                 $count = 0;
  40                 foreach ( $res as $row ) {
  41                         $key = $row->fa_storage_key;
  42                         if ( !strlen( $key ) ) {
  43                                 $output->handleOutput( "Entry with ID {$row->fa_id} has empty key, skipping\n" );
  44                                 continue;
  45                         }
  46                         $group = $row->fa_storage_group;
  47                         $id = $row->fa_id;
  48                         $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
  49                         if ( isset( $row->fa_sha1 ) ) {
  50                                 $sha1 = $row->fa_sha1;
  51                         } else {
  52                                 // old row, populate from key
  53                                 $sha1 = LocalRepo::getHashFromKey( $key );
  54                         }
  55                         // Check if the file is used anywhere...
  56                         $inuse = $dbw->selectField(
  57                                 'oldimage',
  58                                 '1',
  59                                 array(
  60                                         'oi_sha1' => $sha1,
  61                                         'oi_deleted & ' . File::DELETED_FILE => File::DELETED_FILE
  62                                 ),
  63                                 __METHOD__,
  64                                 array( 'FOR UPDATE' )
  65                         );
  66                         if ( $path && $repo->fileExists( $path ) && !$inuse ) {
  67                                 if ( $repo->quickPurge( $path ) ) {
  68                                         $count++;
  69                                         $dbw->query( "DELETE FROM $tbl_arch WHERE fa_id = $id" );
  70                                 } else {
  71                                         $output->handleOutput( "Unable to remove file $path, skipping\n" );
  72                                 }
  73                         } else {
  74                                 $output->handleOutput( "Notice - file '$key' not found in group '$group'\n" );
  75                                 if ( $force ) {
  76                                         $output->handleOutput( "Got --force, deleting DB entry\n" );
  77                                         $dbw->query( "DELETE FROM $tbl_arch WHERE fa_id = $id" );
  78                                 }
  79                         }
  80                 }
  81                 $dbw->commit( __METHOD__ );
  82                 $output->handleOutput( "Done! [$count file(s)]\n" );
  83         }
  84 }