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  * @ingroup Maintenance
  21  */
  22
  23 class DeleteArchivedFilesImplementation {
  24         static public function doDelete( $output, $force ) {
  25                 # Data should come off the master, wrapped in a transaction
  26                 $dbw = wfGetDB( DB_MASTER );
  27                 $dbw->begin();
  28                 $tbl_arch = $dbw->tableName( 'filearchive' );
  29                 $repo = RepoGroup::singleton()->getLocalRepo();
  30                 # Get "active" revisions from the filearchive table
  31                 $output->handleOutput( "Searching for and deleting archived files...\n" );
  32                 $res = $dbw->query( "SELECT fa_id,fa_storage_group,fa_storage_key FROM $tbl_arch" );
  33                 $count = 0;
  34                 foreach ( $res as $row ) {
  35                         $key = $row->fa_storage_key;
  36                         $group = $row->fa_storage_group;
  37                         $id = $row->fa_id;
  38                         $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
  39                         $sha1 = substr( $key, 0, strcspn( $key, '.' ) );
  40                         // Check if the file is used anywhere...
  41                         $inuse = $dbw->selectField( 'oldimage', '1',
  42                                 array( 'oi_sha1' => $sha1,
  43                                 'oi_deleted & ' . File::DELETED_FILE => File::DELETED_FILE ),
  44                                 __METHOD__,
  45                                 array( 'FOR UPDATE' )
  46                         );
  47                         if ( $path && file_exists( $path ) && !$inuse ) {
  48                                 if( unlink( $path ) ) { // delete
  49                                         $count++;
  50                                         $dbw->query( "DELETE FROM $tbl_arch WHERE fa_id = $id" );
  51                                 } else {
  52                                         $output->handleOutput( "Unable to remove file $path, skipping\n" );
  53                                 }
  54                         } else {
  55                                 $output->handleOutput( "Notice - file '$key' not found in group '$group'\n" );
  56                                 if ( $force ) {
  57                                         $output->handleOutput( "Got --force, deleting DB entry\n" );
  58                                         $dbw->query( "DELETE FROM $tbl_arch WHERE fa_id = $id" );
  59                                 }
  60                         }
  61                 }
  62                 $dbw->commit();
  63                 $output->handleOutput( "Done! [$count file(s)]\n" );
  64         }
  65 }