Files
nextcloud-ng_backup/lib/Db/DbIndexCache.php
T
dillard 370f3c55fa M2: local cache of pack indexes (ngb_index)
Opening a repository lists index/ once and downloads only index files
that are not cached; packs written by this server are cached on write,
stale cache rows are dropped. Each resumable step therefore no longer
downloads every index file from the location.
2026-10-02 00:55:46 +02:00

58 lines
1.7 KiB
PHP

<?php
declare(strict_types=1);
// SPDX-FileCopyrightText: 2026 Dillard Blom
// SPDX-License-Identifier: AGPL-3.0-or-later
namespace OCA\NgBackup\Db;
use OCA\NgBackup\Repository\IIndexCache;
use OCP\DB\Exception;
use OCP\IDBConnection;
class DbIndexCache implements IIndexCache {
public function __construct(
private IDBConnection $db,
) {
}
public function all(string $repositoryId): array {
$qb = $this->db->getQueryBuilder();
$qb->select('pack_id', 'entries')->from('ngb_index')->where($qb->expr()->eq('repository_id', $qb->createNamedParameter($repositoryId)));
$result = $qb->executeQuery();
$out = [];
while ($row = $result->fetch()) {
$out[$row['pack_id']] = json_decode($row['entries'], true, 512, JSON_THROW_ON_ERROR);
}
$result->closeCursor();
return $out;
}
public function put(string $repositoryId, string $packId, array $entries): void {
$qb = $this->db->getQueryBuilder();
$qb->insert('ngb_index')->values([
'repository_id' => $qb->createNamedParameter($repositoryId),
'pack_id' => $qb->createNamedParameter($packId),
'entries' => $qb->createNamedParameter(json_encode($entries, JSON_THROW_ON_ERROR)),
]);
try {
$qb->executeStatement();
} catch (Exception $e) {
if ($e->getReason() !== Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
throw $e;
}
}
}
public function remove(string $repositoryId, array $packIds): void {
foreach (array_chunk($packIds, 500) as $chunk) {
$qb = $this->db->getQueryBuilder();
$qb->delete('ngb_index')
->where($qb->expr()->eq('repository_id', $qb->createNamedParameter($repositoryId)))
->andWhere($qb->expr()->in('pack_id', $qb->createNamedParameter($chunk, \OCP\DB\QueryBuilder\IQueryBuilder::PARAM_STR_ARRAY)));
$qb->executeStatement();
}
}
}