1 files changed, 213 insertions, 0 deletions
diff --git a/lib/private/TaskProcessing/Db/TaskMapper.php b/lib/private/TaskProcessing/Db/TaskMapper.php
new file mode 100644
index 00000000000..91fd68820ae
--- /dev/null
+++ b/lib/private/TaskProcessing/Db/TaskMapper.php
@@ -0,0 +1,213 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\TaskProcessing\Db;
+
+use OCP\AppFramework\Db\DoesNotExistException;
+use OCP\AppFramework\Db\Entity;
+use OCP\AppFramework\Db\MultipleObjectsReturnedException;
+use OCP\AppFramework\Db\QBMapper;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\DB\Exception;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDBConnection;
+
+/**
+ * @extends QBMapper<Task>
+ */
+class TaskMapper extends QBMapper {
+	public function __construct(
+		IDBConnection $db,
+		private ITimeFactory $timeFactory,
+	) {
+		parent::__construct($db, 'taskprocessing_tasks', Task::class);
+	}
+
+	/**
+	 * @param int $id
+	 * @return Task
+	 * @throws Exception
+	 * @throws DoesNotExistException
+	 * @throws MultipleObjectsReturnedException
+	 */
+	public function find(int $id): Task {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select(Task::$columns)
+			->from($this->tableName)
+			->where($qb->expr()->eq('id', $qb->createPositionalParameter($id)));
+		return $this->findEntity($qb);
+	}
+
+	/**
+	 * @param list<string> $taskTypes
+	 * @param list<int> $taskIdsToIgnore
+	 * @return Task
+	 * @throws DoesNotExistException
+	 * @throws Exception
+	 */
+	public function findOldestScheduledByType(array $taskTypes, array $taskIdsToIgnore): Task {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select(Task::$columns)
+			->from($this->tableName)
+			->where($qb->expr()->eq('status', $qb->createPositionalParameter(\OCP\TaskProcessing\Task::STATUS_SCHEDULED, IQueryBuilder::PARAM_INT)))
+			->setMaxResults(1)
+			->orderBy('last_updated', 'ASC');
+
+		if (!empty($taskTypes)) {
+			$filter = [];
+			foreach ($taskTypes as $taskType) {
+				$filter[] = $qb->expr()->eq('type', $qb->createPositionalParameter($taskType));
+			}
+
+			$qb->andWhere($qb->expr()->orX(...$filter));
+		}
+
+		if (!empty($taskIdsToIgnore)) {
+			$qb->andWhere($qb->expr()->notIn('id', $qb->createNamedParameter($taskIdsToIgnore, IQueryBuilder::PARAM_INT_ARRAY)));
+		}
+
+		return $this->findEntity($qb);
+	}
+
+	/**
+	 * @param int $id
+	 * @param string|null $userId
+	 * @return Task
+	 * @throws DoesNotExistException
+	 * @throws Exception
+	 * @throws MultipleObjectsReturnedException
+	 */
+	public function findByIdAndUser(int $id, ?string $userId): Task {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select(Task::$columns)
+			->from($this->tableName)
+			->where($qb->expr()->eq('id', $qb->createPositionalParameter($id)));
+		if ($userId === null) {
+			$qb->andWhere($qb->expr()->isNull('user_id'));
+		} else {
+			$qb->andWhere($qb->expr()->eq('user_id', $qb->createPositionalParameter($userId)));
+		}
+		return $this->findEntity($qb);
+	}
+
+	/**
+	 * @param string|null $userId
+	 * @param string|null $taskType
+	 * @param string|null $customId
+	 * @return list<Task>
+	 * @throws Exception
+	 */
+	public function findByUserAndTaskType(?string $userId, ?string $taskType = null, ?string $customId = null): array {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select(Task::$columns)
+			->from($this->tableName)
+			->where($qb->expr()->eq('user_id', $qb->createPositionalParameter($userId)));
+		if ($taskType !== null) {
+			$qb->andWhere($qb->expr()->eq('type', $qb->createPositionalParameter($taskType)));
+		}
+		if ($customId !== null) {
+			$qb->andWhere($qb->expr()->eq('custom_id', $qb->createPositionalParameter($customId)));
+		}
+		return $this->findEntities($qb);
+	}
+
+	/**
+	 * @param string $userId
+	 * @param string $appId
+	 * @param string|null $customId
+	 * @return list<Task>
+	 * @throws Exception
+	 */
+	public function findUserTasksByApp(?string $userId, string $appId, ?string $customId = null): array {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select(Task::$columns)
+			->from($this->tableName)
+			->where($qb->expr()->eq('user_id', $qb->createPositionalParameter($userId)))
+			->andWhere($qb->expr()->eq('app_id', $qb->createPositionalParameter($appId)));
+		if ($customId !== null) {
+			$qb->andWhere($qb->expr()->eq('custom_id', $qb->createPositionalParameter($customId)));
+		}
+		return $this->findEntities($qb);
+	}
+
+	/**
+	 * @param string|null $userId
+	 * @param string|null $taskType
+	 * @param string|null $appId
+	 * @param string|null $customId
+	 * @param int|null $status
+	 * @param int|null $scheduleAfter
+	 * @param int|null $endedBefore
+	 * @return list<Task>
+	 * @throws Exception
+	 */
+	public function findTasks(
+		?string $userId, ?string $taskType = null, ?string $appId = null, ?string $customId = null,
+		?int $status = null, ?int $scheduleAfter = null, ?int $endedBefore = null): array {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select(Task::$columns)
+			->from($this->tableName);
+
+		// empty string: no userId filter
+		if ($userId !== '') {
+			$qb->where($qb->expr()->eq('user_id', $qb->createPositionalParameter($userId)));
+		}
+		if ($taskType !== null) {
+			$qb->andWhere($qb->expr()->eq('type', $qb->createPositionalParameter($taskType)));
+		}
+		if ($appId !== null) {
+			$qb->andWhere($qb->expr()->eq('app_id', $qb->createPositionalParameter($appId)));
+		}
+		if ($customId !== null) {
+			$qb->andWhere($qb->expr()->eq('custom_id', $qb->createPositionalParameter($customId)));
+		}
+		if ($status !== null) {
+			$qb->andWhere($qb->expr()->eq('status', $qb->createPositionalParameter($status, IQueryBuilder::PARAM_INT)));
+		}
+		if ($scheduleAfter !== null) {
+			$qb->andWhere($qb->expr()->isNotNull('scheduled_at'));
+			$qb->andWhere($qb->expr()->gt('scheduled_at', $qb->createPositionalParameter($scheduleAfter, IQueryBuilder::PARAM_INT)));
+		}
+		if ($endedBefore !== null) {
+			$qb->andWhere($qb->expr()->isNotNull('ended_at'));
+			$qb->andWhere($qb->expr()->lt('ended_at', $qb->createPositionalParameter($endedBefore, IQueryBuilder::PARAM_INT)));
+		}
+		return $this->findEntities($qb);
+	}
+
+	/**
+	 * @param int $timeout
+	 * @return int the number of deleted tasks
+	 * @throws Exception
+	 */
+	public function deleteOlderThan(int $timeout): int {
+		$qb = $this->db->getQueryBuilder();
+		$qb->delete($this->tableName)
+			->where($qb->expr()->lt('last_updated', $qb->createPositionalParameter($this->timeFactory->getDateTime()->getTimestamp() - $timeout)));
+		return $qb->executeStatement();
+	}
+
+	public function update(Entity $entity): Entity {
+		$entity->setLastUpdated($this->timeFactory->now()->getTimestamp());
+		return parent::update($entity);
+	}
+
+	public function lockTask(Entity $entity): int {
+		$qb = $this->db->getQueryBuilder();
+		$qb->update($this->tableName)
+			->set('status', $qb->createPositionalParameter(\OCP\TaskProcessing\Task::STATUS_RUNNING, IQueryBuilder::PARAM_INT))
+			->where($qb->expr()->eq('id', $qb->createPositionalParameter($entity->getId(), IQueryBuilder::PARAM_INT)))
+			->andWhere($qb->expr()->neq('status', $qb->createPositionalParameter(2, IQueryBuilder::PARAM_INT)));
+		try {
+			return $qb->executeStatement();
+		} catch (Exception) {
+			return 0;
+		}
+	}
+}