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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2023 Robin Appelman <robin@icewind.nl>
*
* @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\Command\Object;
use OC\Core\Command\Base;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\Files\ObjectStore\IObjectStore;
use OCP\IConfig;
use OCP\IDBConnection;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
class ObjectUtil extends Base {
private IConfig $config;
private IDBConnection $connection;
public function __construct(IConfig $config, IDBConnection $connection) {
$this->config = $config;
$this->connection = $connection;
}
private function getObjectStoreConfig(): ?array {
$config = $this->config->getSystemValue('objectstore_multibucket');
if (is_array($config)) {
$config['multibucket'] = true;
return $config;
}
$config = $this->config->getSystemValue('objectstore');
if (is_array($config)) {
if (!isset($config['multibucket'])) {
$config['multibucket'] = false;
}
return $config;
} else {
return null;
}
}
public function getObjectStore(?string $bucket, OutputInterface $output): ?IObjectStore {
$config = $this->getObjectStoreConfig();
if (!$config) {
$output->writeln("<error>Instance is not using primary object store</error>");
return null;
}
if ($config['multibucket'] && !$bucket) {
$output->writeln("<error>--bucket option required</error> because <info>multi bucket</info> is enabled.");
return null;
}
if (!isset($config['arguments'])) {
throw new \Exception("no arguments configured for object store configuration");
}
if (!isset($config['class'])) {
throw new \Exception("no class configured for object store configuration");
}
if ($bucket) {
// s3, swift
$config['arguments']['bucket'] = $bucket;
// azure
$config['arguments']['container'] = $bucket;
}
$store = new $config['class']($config['arguments']);
if (!$store instanceof IObjectStore) {
throw new \Exception("configured object store class is not an object store implementation");
}
return $store;
}
/**
* Check if an object is referenced in the database
*/
public function objectExistsInDb(string $object): int|false {
if (str_starts_with($object, 'urn:oid:')) {
$fileId = (int)substr($object, strlen('urn:oid:'));
$query = $this->connection->getQueryBuilder();
$query->select('fileid')
->from('filecache')
->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
$result = $query->executeQuery();
if ($result->fetchOne() !== false) {
return $fileId;
} else {
return false;
}
} else {
return false;
}
}
public function writeIteratorToOutput(InputInterface $input, OutputInterface $output, \Iterator $objects, int $chunkSize): void {
$outputType = $input->getOption('output');
$humanOutput = $outputType === Base::OUTPUT_FORMAT_PLAIN;
$first = true;
if (!$humanOutput) {
$output->writeln('[');
}
foreach ($this->chunkIterator($objects, $chunkSize) as $chunk) {
if ($outputType === Base::OUTPUT_FORMAT_PLAIN) {
$this->outputChunk($input, $output, $chunk);
} else {
foreach ($chunk as $object) {
if (!$first) {
$output->writeln(',');
}
$row = $this->formatObject($object, $humanOutput);
if ($outputType === Base::OUTPUT_FORMAT_JSON_PRETTY) {
$output->write(json_encode($row, JSON_PRETTY_PRINT));
} else {
$output->write(json_encode($row));
}
$first = false;
}
}
}
if (!$humanOutput) {
$output->writeln("\n]");
}
}
private function formatObject(array $object, bool $humanOutput): array {
$row = array_merge([
'urn' => $object['urn'],
], ($object['metadata'] ?? []));
if ($humanOutput && isset($row['size'])) {
$row['size'] = \OC_Helper::humanFileSize($row['size']);
}
if (isset($row['mtime'])) {
$row['mtime'] = $row['mtime']->format(\DateTimeImmutable::ATOM);
}
return $row;
}
private function outputChunk(InputInterface $input, OutputInterface $output, iterable $chunk): void {
$result = [];
$humanOutput = $input->getOption('output') === 'plain';
foreach ($chunk as $object) {
$result[] = $this->formatObject($object, $humanOutput);
}
$this->writeTableInOutputFormat($input, $output, $result);
}
public function chunkIterator(\Iterator $iterator, int $count): \Iterator {
$chunk = [];
for ($i = 0; $iterator->valid(); $i++) {
$chunk[] = $iterator->current();
$iterator->next();
if (count($chunk) == $count) {
yield $chunk;
$chunk = [];
}
}
if (count($chunk)) {
yield $chunk;
}
}
}
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