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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Robin Appelman <robin@icewind.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\Files\BackgroundJob;
use OC\Files\Utils\Scanner;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\ILogger;
/**
* Class ScanFiles is a background job used to run the file scanner over the user
* accounts to ensure integrity of the file cache.
*
* @package OCA\Files\BackgroundJob
*/
class ScanFiles extends \OC\BackgroundJob\TimedJob {
/** @var IConfig */
private $config;
/** @var IEventDispatcher */
private $dispatcher;
/** @var ILogger */
private $logger;
private $connection;
/** Amount of users that should get scanned per execution */
public const USERS_PER_SESSION = 500;
/**
* @param IConfig $config
* @param IEventDispatcher $dispatcher
* @param ILogger $logger
* @param IDBConnection $connection
*/
public function __construct(
IConfig $config,
IEventDispatcher $dispatcher,
ILogger $logger,
IDBConnection $connection
) {
// Run once per 10 minutes
$this->setInterval(60 * 10);
$this->config = $config;
$this->dispatcher = $dispatcher;
$this->logger = $logger;
$this->connection = $connection;
}
/**
* @param string $user
*/
protected function runScanner(string $user) {
try {
$scanner = new Scanner(
$user,
null,
$this->dispatcher,
$this->logger
);
$scanner->backgroundScan('');
} catch (\Exception $e) {
$this->logger->logException($e, ['app' => 'files']);
}
\OC_Util::tearDownFS();
}
/**
* Find a storage which have unindexed files and return a user with access to the storage
*
* @return string|false
*/
private function getUserToScan() {
$query = $this->connection->getQueryBuilder();
$query->select('user_id')
->from('filecache', 'f')
->innerJoin('f', 'mounts', 'm', $query->expr()->eq('storage_id', 'storage'))
->where($query->expr()->lt('size', $query->createNamedParameter(0, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->gt('parent', $query->createNamedParameter(-1, IQueryBuilder::PARAM_INT)))
->setMaxResults(1);
return $query->execute()->fetchOne();
}
/**
* @param $argument
* @throws \Exception
*/
protected function run($argument) {
if ($this->config->getSystemValueBool('files_no_background_scan', false)) {
return;
}
$usersScanned = 0;
$lastUser = '';
$user = $this->getUserToScan();
while ($user && $usersScanned < self::USERS_PER_SESSION && $lastUser !== $user) {
$this->runScanner($user);
$lastUser = $user;
$user = $this->getUserToScan();
$usersScanned += 1;
}
if ($lastUser === $user) {
$this->logger->warning("User $user still has unscanned files after running background scan, background scan might be stopped prematurely");
}
}
}
|
