Add migration from the old to new metadata tables

Signed-off-by: Louis Chemineau <louis@chmn.me>

1 files changed, 107 insertions, 0 deletions

diff --git a/core/BackgroundJobs/MigrateMetadataJob.php b/core/BackgroundJobs/MigrateMetadataJob.php
new file mode 100644
index 00000000000..4f1856c2335
--- /dev/null
+++ b/core/BackgroundJobs/MigrateMetadataJob.php
@@ -0,0 +1,107 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2023 Louis Chemineau <louis@chmn.me>
+ *
+ * @author Louis Chemineau <louis@chmn.me>
+ *
+ * @license AGPL-3.0-or-later
+ *
+ * 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 OC\Core\BackgroundJobs;
+
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\BackgroundJob\IJobList;
+use OCP\BackgroundJob\TimedJob;
+use OCP\FilesMetadata\IFilesMetadataManager;
+use OCP\IConfig;
+use OCP\IDBConnection;
+
+class MigrateMetadataJob extends TimedJob {
+	public function __construct(
+		ITimeFactory $time,
+		private IConfig $config,
+		private IFilesMetadataManager $filesMetadataManager,
+		private IDBConnection $connection,
+		private IJobList $jobList,
+	) {
+		parent::__construct($time);
+
+		$this->setTimeSensitivity(\OCP\BackgroundJob\IJob::TIME_INSENSITIVE);
+		$this->setInterval(24 * 3600);
+	}
+
+	protected function run(mixed $argument): void {
+		if (!$this->connection->tableExists('file_metadata')) {
+			return;
+		}
+
+		$startTime = time();
+
+		$selectQuery = $this->connection->getQueryBuilder()
+			->select('*')
+			->from('file_metadata')
+			->setMaxResults(200);
+
+		$deleteQuery = $this->connection->getQueryBuilder();
+		$deleteQuery->delete('file_metadata')
+			->where($deleteQuery->expr()->eq('id', $deleteQuery->createParameter('id')))
+			->where($deleteQuery->expr()->eq('group_name', $deleteQuery->createParameter('group_name')))
+			->where($deleteQuery->expr()->eq('value', $deleteQuery->createParameter('value')));
+
+		do {
+			$this->connection->beginTransaction();
+
+			$results = $selectQuery->executeQuery();
+
+			while ($row = $results->fetch()) {
+				$metadata = $this->filesMetadataManager->getMetadata($row['id'], true);
+
+				switch ($row['group_name']) {
+					case 'size':
+						$metadata->setArray('photos-size', json_decode($row['value'], true));
+						break;
+					case 'gps':
+						$metadata->setArray('photos-gps', json_decode($row['value'], true));
+						break;
+					case 'photos_place':
+						$metadata->setString('photos-place', $row['value'], true);
+						break;
+				}
+
+				$this->filesMetadataManager->saveMetadata($metadata);
+				$deleteQuery->setParameter('id', $row['id']);
+				$deleteQuery->setParameter('group_name', $row['group_name']);
+				$deleteQuery->setParameter('value', $row['value']);
+				$deleteQuery->executeStatement();
+			}
+
+			$results->closeCursor();
+
+			$this->connection->commit();
+
+			// Stop if execution time is more than one hour.
+			if (time() - $startTime > 60 * 60) {
+				return;
+			}
+		} while ($results->rowCount() !== 0);
+
+		$this->connection->dropTable('file_metadata');
+		$this->jobList->remove(MigrateMetadataJob::class);
+	}
+}