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nextcloud-ng_backup/lib/Db/RunMapper.php
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<?php
declare(strict_types=1);
// SPDX-FileCopyrightText: 2026 Dillard Blom
// SPDX-License-Identifier: AGPL-3.0-or-later
namespace OCA\NgBackup\Db;
use OCP\AppFramework\Db\QBMapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
/** @template-extends QBMapper<Run> */
final class RunMapper extends QBMapper {
public function __construct(IDBConnection $db) {
parent::__construct($db, 'ngb_runs', Run::class);
}
/**
* Write $run only if it is still running and unchanged since it was loaded (updated_at
* $loadedAt), in one statement: two processes that loaded the same run cannot both write it.
* The new updated_at is always later than $loadedAt, so every write is seen as a change.
*
* @return Run|null the written run, or null when another process wrote it first
*/
public function updateIfUnchanged(Run $run, int $loadedAt): ?Run {
$run->setUpdatedAt(max(time(), $loadedAt + 1));
$types = $run->getFieldTypes();
$qb = $this->db->getQueryBuilder();
$qb->update($this->getTableName());
foreach (array_keys($run->getUpdatedFields()) as $field) {
if ($field === 'id') {
continue;
}
$value = $run->{'get' . ucfirst($field)}();
$type = ($types[$field] ?? 'string') === 'integer' ? IQueryBuilder::PARAM_INT : IQueryBuilder::PARAM_STR;
$qb->set($run->propertyToColumn($field), $qb->createNamedParameter($value, $value === null ? IQueryBuilder::PARAM_NULL : $type));
}
$qb->where($qb->expr()->eq('id', $qb->createNamedParameter($run->getId(), IQueryBuilder::PARAM_INT)))
->andWhere($qb->expr()->eq('status', $qb->createNamedParameter(Run::RUNNING)))
->andWhere($qb->expr()->eq('updated_at', $qb->createNamedParameter($loadedAt, IQueryBuilder::PARAM_INT)));
if ($qb->executeStatement() !== 1) {
return null;
}
$run->resetUpdatedFields();
return $run;
}
public function find(int $id): Run {
$qb = $this->db->getQueryBuilder();
$qb->select('*')->from($this->getTableName())->where($qb->expr()->eq('id', $qb->createNamedParameter($id, IQueryBuilder::PARAM_INT)));
return $this->findEntity($qb);
}
/** @return list<Run> */
public function findRunning(?int $targetId = null, ?string $kind = null): array {
$qb = $this->db->getQueryBuilder();
$qb->select('*')->from($this->getTableName())->where($qb->expr()->eq('status', $qb->createNamedParameter(Run::RUNNING)));
if ($kind !== null) {
$qb->andWhere($qb->expr()->eq('kind', $qb->createNamedParameter($kind)));
}
if ($targetId !== null) {
$qb->andWhere($qb->expr()->eq('target_id', $qb->createNamedParameter($targetId, IQueryBuilder::PARAM_INT)));
}
return $this->findEntities($qb->orderBy('id'));
}
/** @return list<Run> */
public function findRecent(int $limit = 20): array {
$qb = $this->db->getQueryBuilder();
$qb->select('*')->from($this->getTableName())->orderBy('id', 'DESC')->setMaxResults($limit);
return $this->findEntities($qb);
}
/** @return list<Run> runs of $kind started at or after $since, newest first */
public function startedSince(int $targetId, string $kind, int $since): array {
$qb = $this->db->getQueryBuilder();
$qb->select('*')->from($this->getTableName())
->where($qb->expr()->eq('target_id', $qb->createNamedParameter($targetId, IQueryBuilder::PARAM_INT)))
->andWhere($qb->expr()->eq('kind', $qb->createNamedParameter($kind)))
->andWhere($qb->expr()->gte('started_at', $qb->createNamedParameter($since, IQueryBuilder::PARAM_INT)))
->orderBy('id', 'DESC');
return $this->findEntities($qb);
}
public function lastFinished(int $targetId, string $kind): ?Run {
$qb = $this->db->getQueryBuilder();
$qb->select('*')->from($this->getTableName())
->where($qb->expr()->eq('target_id', $qb->createNamedParameter($targetId, IQueryBuilder::PARAM_INT)))
->andWhere($qb->expr()->eq('kind', $qb->createNamedParameter($kind)))
->andWhere($qb->expr()->eq('status', $qb->createNamedParameter(Run::DONE)))
->orderBy('id', 'DESC')->setMaxResults(1);
$r = $this->findEntities($qb);
return $r[0] ?? null;
}
}