mirror of https://github.com/nextcloud/server.git
Merge pull request #43580 from nextcloud/artonge/fix/metdata_column_migration
commit
a891cbc21b
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<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2024 Louis Chemineau <louis@chmn.me>
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*
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* @author Louis Chemineau <louis@chmn.me>
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*
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* @license AGPL-3.0-or-later
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\Core\BackgroundJobs;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\BackgroundJob\IJobList;
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use OCP\BackgroundJob\TimedJob;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\IDBConnection;
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// Migrate oc_file_metadata.metadata to oc_file_metadata.value.
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// This was previously done in a migration, but it is taking to much time in large instances.
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// This job will progressively migrate the data 1 hour per night every night.
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// Once done, it will remove itself from the job list.
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class MetadataMigrationJob extends TimedJob {
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public function __construct(
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ITimeFactory $time,
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private IDBConnection $db,
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private IJobList $jobList,
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) {
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parent::__construct($time);
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$this->setTimeSensitivity(\OCP\BackgroundJob\IJob::TIME_INSENSITIVE);
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$this->setInterval(24 * 3600);
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}
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protected function run(mixed $argument): void {
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if (!$this->db->createSchema()->getTable('oc_file_metadata')->hasColumn('metadata')) {
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return;
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}
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$updateQuery = $this->db->getQueryBuilder();
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$updateQuery->update('file_metadata')
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->set('value', $updateQuery->createParameter('value'))
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->set('metadata', $updateQuery->createParameter('metadata'))
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->where($updateQuery->expr()->eq('id', $updateQuery->createParameter('id')))
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->andWhere($updateQuery->expr()->eq('group_name', $updateQuery->createParameter('group_name')));
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$selectQuery = $this->db->getQueryBuilder();
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$selectQuery->select('id', 'group_name', 'metadata')
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->from('file_metadata')
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->where($selectQuery->expr()->nonEmptyString('metadata'))
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->setMaxResults(1000);
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$movedRows = 0;
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$startTime = time();
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do {
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// Stop if execution time is more than one hour.
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if (time() - $startTime > 3600) {
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return;
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}
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$movedRows = $this->chunkedCopying($updateQuery, $selectQuery);
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} while ($movedRows !== 0);
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$this->jobList->remove(MetadataMigrationJob::class);
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}
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protected function chunkedCopying(IQueryBuilder $updateQuery, IQueryBuilder $selectQuery): int {
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$this->db->beginTransaction();
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$results = $selectQuery->executeQuery();
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while ($row = $results->fetch()) {
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$updateQuery
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->setParameter('id', (int)$row['id'])
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->setParameter('group_name', $row['group_name'])
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->setParameter('value', $row['metadata'])
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->setParameter('metadata', '')
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->executeStatement();
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}
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$results->closeCursor();
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$this->db->commit();
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return $results->rowCount();
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}
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}
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@ -0,0 +1,70 @@
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<?php
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/**
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* @copyright Copyright (c) 2024 Louis Chmn <louis@chmn.me>
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*
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* @author Louis Chmn <louis@chmn.me>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\Repair;
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use OC\Core\BackgroundJobs\MetadataMigrationJob;
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use OCP\BackgroundJob\IJobList;
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use OCP\IDBConnection;
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use OCP\Migration\IOutput;
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use OCP\Migration\IRepairStep;
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class AddMetadataMigrationJob implements IRepairStep {
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public function __construct(
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private IJobList $jobList,
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private IDBConnection $db,
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) {
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}
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public function getName() {
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return 'Queue a job to migrate the file_metadata table and delete the metadata column once empty';
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}
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public function run(IOutput $output) {
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$schema = $this->db->createSchema();
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$metadataTable = $schema->getTable('oc_file_metadata');
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if (!$metadataTable->hasColumn('metadata')) {
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return;
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}
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$selectQuery = $this->db->getQueryBuilder();
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$result = $selectQuery->select('id', 'group_name', 'metadata')
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->from('file_metadata')
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->where($selectQuery->expr()->nonEmptyString('metadata'))
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->setMaxResults(1)
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->executeQuery();
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if ($result->rowCount() === 0) {
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$output->info('Removing metadata column from the file_metadata table.');
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$metadataTable->dropColumn('metadata');
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$this->db->migrateToSchema($schema);
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return;
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}
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if ($this->jobList->has(MetadataMigrationJob::class, null)) {
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return;
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}
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$this->jobList->add(MetadataMigrationJob::class);
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}
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}
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