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<?php
/**
* Scan the logging table and purge affected files within a timeframe.
*
* 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
*/
use MediaWiki\FileRepo\File\LocalFile;
use MediaWiki\FileRepo\LocalRepo;
use MediaWiki\Maintenance\Maintenance;
use MediaWiki\Title\Title;
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd
/**
* Maintenance script that scans the deletion log and purges affected files
* within a timeframe.
*
* @ingroup Maintenance
*/
class PurgeChangedFiles extends Maintenance {
/**
* Mapping from type option to log type and actions.
* @var array
*/
private static $typeMappings = [
'created' => [
'upload' => [ 'upload' ],
'import' => [ 'upload', 'interwiki' ],
],
'deleted' => [
'delete' => [ 'delete', 'revision' ],
'suppress' => [ 'delete', 'revision' ],
],
'modified' => [
'upload' => [ 'overwrite', 'revert' ],
'move' => [ 'move', 'move_redir' ],
],
];
/**
* @var string
*/
private $startTimestamp;
/**
* @var string
*/
private $endTimestamp;
public function __construct() {
parent::__construct();
$this->addDescription( 'Scan the logging table and purge files and thumbnails.' );
$this->addOption( 'starttime', 'Starting timestamp', true, true );
$this->addOption( 'endtime', 'Ending timestamp', true, true );
$this->addOption( 'type', 'Comma-separated list of types of changes to send purges for (' .
implode( ',', array_keys( self::$typeMappings ) ) . ',all)', false, true );
$this->addOption( 'htcp-dest', 'HTCP announcement destination (IP:port)', false, true );
$this->addOption( 'dry-run', 'Do not send purge requests' );
$this->addOption( 'sleep-per-batch', 'Milliseconds to sleep between batches', false, true );
$this->addOption( 'verbose', 'Show more output', false, false, 'v' );
$this->setBatchSize( 100 );
}
public function execute() {
global $wgHTCPRouting;
if ( $this->hasOption( 'htcp-dest' ) ) {
$parts = explode( ':', $this->getOption( 'htcp-dest' ), 2 );
if ( count( $parts ) < 2 ) {
// Add default htcp port
$parts[] = '4827';
}
// Route all HTCP messages to provided host:port
$wgHTCPRouting = [
'' => [ 'host' => $parts[0], 'port' => $parts[1] ],
];
$this->verbose( "HTCP broadcasts to {$parts[0]}:{$parts[1]}\n" );
}
// Find out which actions we should be concerned with
$typeOpt = $this->getOption( 'type', 'all' );
if ( $typeOpt === 'all' ) {
// Convert 'all' to all registered types
$typeOpt = implode( ',', array_keys( self::$typeMappings ) );
}
$typeList = explode( ',', $typeOpt );
foreach ( $typeList as $type ) {
if ( !isset( self::$typeMappings[$type] ) ) {
$this->error( "\nERROR: Unknown type: {$type}\n" );
$this->maybeHelp( true );
}
}
// Validate the timestamps
$dbr = $this->getReplicaDB();
$this->startTimestamp = $dbr->timestamp( $this->getOption( 'starttime' ) );
$this->endTimestamp = $dbr->timestamp( $this->getOption( 'endtime' ) );
if ( $this->startTimestamp > $this->endTimestamp ) {
$this->error( "\nERROR: starttime after endtime\n" );
$this->maybeHelp( true );
}
// Turn on verbose when dry-run is enabled
if ( $this->hasOption( 'dry-run' ) ) {
$this->setOption( 'verbose', 1 );
}
$this->verbose( 'Purging files that were: ' . implode( ', ', $typeList ) . "\n" );
foreach ( $typeList as $type ) {
$this->verbose( "Checking for {$type} files...\n" );
$this->purgeFromLogType( $type );
if ( !$this->hasOption( 'dry-run' ) ) {
$this->verbose( "...{$type} files purged.\n\n" );
}
}
}
/**
* Purge cache and thumbnails for changes of the given type.
*
* @param string $type Type of change to find
*/
protected function purgeFromLogType( $type ) {
$repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo();
$dbr = $this->getReplicaDB();
foreach ( self::$typeMappings[$type] as $logType => $logActions ) {
$this->verbose( "Scanning for {$logType}/" . implode( ',', $logActions ) . "\n" );
$res = $dbr->newSelectQueryBuilder()
->select( [ 'log_title', 'log_timestamp', 'log_params' ] )
->from( 'logging' )
->where( [
'log_namespace' => NS_FILE,
'log_type' => $logType,
'log_action' => $logActions,
$dbr->expr( 'log_timestamp', '>=', $this->startTimestamp ),
$dbr->expr( 'log_timestamp', '<=', $this->endTimestamp ),
] )
->caller( __METHOD__ )->fetchResultSet();
$bSize = 0;
foreach ( $res as $row ) {
$file = $repo->newFile( Title::makeTitle( NS_FILE, $row->log_title ) );
if ( $this->hasOption( 'dry-run' ) ) {
$this->verbose( "{$type}[{$row->log_timestamp}]: {$row->log_title}\n" );
continue;
}
// Purge current version and its thumbnails
$file->purgeCache();
// Purge the old versions and their thumbnails
foreach ( $file->getHistory() as $oldFile ) {
$oldFile->purgeCache();
}
if ( $logType === 'delete' ) {
// If there is an orphaned storage file... delete it
if ( !$file->exists() && $repo->fileExists( $file->getPath() ) ) {
$dpath = $this->getDeletedPath( $repo, $file );
if ( $repo->fileExists( $dpath ) ) {
// Check to avoid data loss
$repo->getBackend()->delete( [ 'src' => $file->getPath() ] );
$this->verbose( "Deleted orphan file: {$file->getPath()}.\n" );
} else {
$this->error( "File was not deleted: {$file->getPath()}.\n" );
}
}
// Purge items from fileachive table (rows are likely here)
$this->purgeFromArchiveTable( $repo, $file );
} elseif ( $logType === 'move' ) {
// Purge the target file as well
$params = unserialize( $row->log_params );
if ( isset( $params['4::target'] ) ) {
$target = $params['4::target'];
$targetFile = $repo->newFile( Title::makeTitle( NS_FILE, $target ) );
$targetFile->purgeCache();
$this->verbose( "Purged file {$target}; move target @{$row->log_timestamp}.\n" );
}
}
$this->verbose( "Purged file {$row->log_title}; {$type} @{$row->log_timestamp}.\n" );
if ( $this->hasOption( 'sleep-per-batch' ) && ++$bSize > $this->getBatchSize() ) {
$bSize = 0;
// sleep-per-batch is milliseconds, usleep wants micro seconds.
usleep( 1000 * (int)$this->getOption( 'sleep-per-batch' ) );
}
}
}
}
protected function purgeFromArchiveTable( LocalRepo $repo, LocalFile $file ) {
$dbr = $repo->getReplicaDB();
$res = $dbr->newSelectQueryBuilder()
->select( [ 'fa_archive_name' ] )
->from( 'filearchive' )
->where( [ 'fa_name' => $file->getName() ] )
->caller( __METHOD__ )->fetchResultSet();
foreach ( $res as $row ) {
if ( $row->fa_archive_name === null ) {
// Was not an old version (current version names checked already)
continue;
}
$ofile = $repo->newFromArchiveName( $file->getTitle(), $row->fa_archive_name );
// If there is an orphaned storage file still there...delete it
if ( !$file->exists() && $repo->fileExists( $ofile->getPath() ) ) {
$dpath = $this->getDeletedPath( $repo, $ofile );
if ( $repo->fileExists( $dpath ) ) {
// Check to avoid data loss
$repo->getBackend()->delete( [ 'src' => $ofile->getPath() ] );
$this->output( "Deleted orphan file: {$ofile->getPath()}.\n" );
} else {
$this->error( "File was not deleted: {$ofile->getPath()}.\n" );
}
}
$file->purgeOldThumbnails( $row->fa_archive_name );
}
}
protected function getDeletedPath( LocalRepo $repo, LocalFile $file ): string {
$hash = $repo->getFileSha1( $file->getPath() );
$key = "{$hash}.{$file->getExtension()}";
return $repo->getDeletedHashPath( $key ) . $key;
}
/**
* Send an output message iff the 'verbose' option has been provided.
*
* @param string $msg Message to output
*/
protected function verbose( $msg ) {
if ( $this->hasOption( 'verbose' ) ) {
$this->output( $msg );
}
}
}
// @codeCoverageIgnoreStart
$maintClass = PurgeChangedFiles::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd