wikimedia / mediawiki

maintenance/cleanupUploadStash.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 36 and the first side effect is on line 28.

/**
 * Remove old or broken uploads from temporary uploaded file storage,
 * clean up associated database records
 *
 * Copyright © 2011, Wikimedia Foundation
 *
 * 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
 * @author Ian Baker <ibaker@wikimedia.org>
 * @ingroup Maintenance
 */

require_once __DIR__ . '/Maintenance.php';

/**
 * Maintenance script to remove old or broken uploads from temporary uploaded
 * file storage and clean up associated database records.
 *
 * @ingroup Maintenance
 */
class UploadStashCleanup extends Maintenance {

	public function __construct() {
		parent::__construct();
		$this->addDescription( 'Clean up abandoned files in temporary uploaded file stash' );
		$this->setBatchSize( 50 );
	}

	public function execute() {
		global $wgUploadStashMaxAge;

		$repo = RepoGroup::singleton()->getLocalRepo();
		$tempRepo = $repo->getTempRepo();

		$dbr = $repo->getSlaveDB();

		// how far back should this look for files to delete?
		$cutoff = time() - $wgUploadStashMaxAge;

		$this->output( "Getting list of files to clean up...\n" );
		$res = $dbr->select(
			'uploadstash',
			'us_key',
			'us_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( $cutoff ) ),
			__METHOD__
		);

		// Delete all registered stash files...
		if ( $res->numRows() == 0 ) {
			$this->output( "No stashed files to cleanup according to the DB.\n" );
		} else {
			// finish the read before starting writes.
			$keys = [];
			foreach ( $res as $row ) {
				array_push( $keys, $row->us_key );
			}

			$this->output( 'Removing ' . count( $keys ) . " file(s)...\n" );
			// this could be done some other, more direct/efficient way, but using
			// UploadStash's own methods means it's less likely to fall accidentally
			// out-of-date someday
			$stash = new UploadStash( $repo );

			$i = 0;
			foreach ( $keys as $key ) {
				$i++;
				try {
					$stash->getFile( $key, true );
					$stash->removeFileNoAuth( $key );
				} catch ( UploadStashException $ex ) {
					$type = get_class( $ex );
					$this->output( "Failed removing stashed upload with key: $key ($type)\n" );
				}
				if ( $i % 100 == 0 ) {
					wfWaitForSlaves();
					$this->output( "$i\n" );
				}
			}
			$this->output( "$i done\n" );
		}

		// Delete all the corresponding thumbnails...
		$dir = $tempRepo->getZonePath( 'thumb' );
		$iterator = $tempRepo->getBackend()->getFileList( [ 'dir' => $dir, 'adviseStat' => 1 ] );
		$this->output( "Deleting old thumbnails...\n" );
		$i = 0;
		$batch = []; // operation batch
		foreach ( $iterator as $file ) {
			if ( wfTimestamp( TS_UNIX, $tempRepo->getFileTimestamp( "$dir/$file" ) ) < $cutoff ) {
				$batch[] = [ 'op' => 'delete', 'src' => "$dir/$file" ];
				if ( count( $batch ) >= $this->mBatchSize ) {
					$this->doOperations( $tempRepo, $batch );
					$i += count( $batch );
					$batch = [];
					$this->output( "$i\n" );
				}
			}
		}
		if ( count( $batch ) ) {
			$this->doOperations( $tempRepo, $batch );
			$i += count( $batch );
		}
		$this->output( "$i done\n" );

		// Apparently lots of stash files are not registered in the DB...
		$dir = $tempRepo->getZonePath( 'public' );
		$iterator = $tempRepo->getBackend()->getFileList( [ 'dir' => $dir, 'adviseStat' => 1 ] );
		$this->output( "Deleting orphaned temp files...\n" );
		if ( strpos( $dir, '/local-temp' ) === false ) { // sanity check
			$this->error( "Temp repo is not using the temp container.", 1 ); // die
		}
		$i = 0;
		$batch = []; // operation batch
		foreach ( $iterator as $file ) {
			if ( wfTimestamp( TS_UNIX, $tempRepo->getFileTimestamp( "$dir/$file" ) ) < $cutoff ) {
				$batch[] = [ 'op' => 'delete', 'src' => "$dir/$file" ];
				if ( count( $batch ) >= $this->mBatchSize ) {
					$this->doOperations( $tempRepo, $batch );
					$i += count( $batch );
					$batch = [];
					$this->output( "$i\n" );
				}
			}
		}
		if ( count( $batch ) ) {
			$this->doOperations( $tempRepo, $batch );
			$i += count( $batch );
		}
		$this->output( "$i done\n" );
	}

	protected function doOperations( FileRepo $tempRepo, array $ops ) {
		$status = $tempRepo->getBackend()->doQuickOperations( $ops );
		if ( !$status->isOK() ) {
			$this->error( print_r( $status->getErrorsArray(), true ) );
		}
	}
}

$maintClass = "UploadStashCleanup";
require_once RUN_MAINTENANCE_IF_MAIN;