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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2021 Julius Härtl <jus@bitgrid.net>
*
* @author Julius Härtl <jus@bitgrid.net>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Files_External\Migration;
use Closure;
use OC\Files\Cache\Storage;
use OCP\DB\Exception;
use OCP\DB\IResult;
use OCP\DB\ISchemaWrapper;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;
use Psr\Log\LoggerInterface;
class Version1015Date20211104103506 extends SimpleMigrationStep {
/** @var IDBConnection */
private $connection;
/** @var LoggerInterface */
private $logger;
public function __construct(IDBConnection $connection, LoggerInterface $logger) {
$this->connection = $connection;
$this->logger = $logger;
}
public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
$qb = $this->connection->getQueryBuilder();
$qb->update('storages')
->set('id', $qb->createParameter('newId'))
->where($qb->expr()->eq('id', $qb->createParameter('oldId')));
$mounts = $this->getS3Mounts();
if (!$mounts instanceof IResult) {
throw new \Exception('Could not fetch existing mounts for migration');
}
while ($mount = $mounts->fetch()) {
$config = $this->getStorageConfig((int)$mount['mount_id']);
$hostname = $config['hostname'];
$bucket = $config['bucket'];
$key = $config['key'];
$oldId = Storage::adjustStorageId('amazon::' . $bucket);
$newId = Storage::adjustStorageId('amazon::external::' . md5($hostname . ':' . $bucket . ':' . $key));
try {
$qb->setParameter('oldId', $oldId);
$qb->setParameter('newId', $newId);
$qb->execute();
$this->logger->info('Migrated s3 storage id for mount with id ' . $mount['mount_id'] . ' to ' . $newId);
} catch (Exception $e) {
$this->logger->error('Failed to migrate external s3 storage id for mount with id ' . $mount['mount_id'], [
'exception' => $e
]);
}
}
return null;
}
/**
* @throws Exception
* @return \OCP\DB\IResult|int
*/
private function getS3Mounts() {
$qb = $this->connection->getQueryBuilder();
$qb->select('m.mount_id')
->selectAlias('c.value', 'bucket')
->from('external_mounts', 'm')
->innerJoin('m', 'external_config', 'c', 'c.mount_id = m.mount_id')
->where($qb->expr()->eq('m.storage_backend', $qb->createPositionalParameter('amazons3')))
->andWhere($qb->expr()->eq('c.key', $qb->createPositionalParameter('bucket')));
return $qb->execute();
}
/**
* @throws Exception
*/
private function getStorageConfig(int $mountId): array {
$qb = $this->connection->getQueryBuilder();
$qb->select('key', 'value')
->from('external_config')
->where($qb->expr()->eq('mount_id', $qb->createPositionalParameter($mountId)));
$config = [];
foreach ($qb->execute()->fetchAll() as $row) {
$config[$row['key']] = $row['value'];
}
return $config;
}
}
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