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| author | Morris Jobke <hey@morrisjobke.de> | 2018-11-12 15:13:10 +0100 |
|---|---|---|
| committer | Morris Jobke <hey@morrisjobke.de> | 2018-11-12 15:13:10 +0100 |
| commit | f7e3cf20854402806f8d735ca498a2f240f2615c (patch) | |
| tree | e366a1e564454331cd7aac0f7b915a84c526c119 /lib | |
| parent | 859dd1e742c4c71b3fbd7035a866c230b80142c2 (diff) | |
| download | nextcloud-server-f7e3cf20854402806f8d735ca498a2f240f2615c.tar.gz nextcloud-server-f7e3cf20854402806f8d735ca498a2f240f2615c.zip | |
Fix UniqueConstraintViolationException while insert into oc_file_locks
* fixes #9305 by not being prone to the race condition in insertIfNotExists
* fixes #6899 by not using a query that can result in a deadlock
* replaces the insertIfNotExists call with an insert which is wrapped into a try-catch block
* followup to #12371
Signed-off-by: Morris Jobke <hey@morrisjobke.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/private/Lock/DBLockingProvider.php | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/private/Lock/DBLockingProvider.php b/lib/private/Lock/DBLockingProvider.php index 6adb7488217..79f2ff274cf 100644 --- a/lib/private/Lock/DBLockingProvider.php +++ b/lib/private/Lock/DBLockingProvider.php @@ -26,6 +26,7 @@ namespace OC\Lock; +use Doctrine\DBAL\Exception\UniqueConstraintViolationException; use OC\DB\QueryBuilder\Literal; use OCP\AppFramework\Utility\ITimeFactory; use OCP\DB\QueryBuilder\IQueryBuilder; @@ -133,7 +134,17 @@ class DBLockingProvider extends AbstractLockingProvider { protected function initLockField(string $path, int $lock = 0): int { $expire = $this->getExpireTime(); - return $this->connection->insertIfNotExist('*PREFIX*file_locks', ['key' => $path, 'lock' => $lock, 'ttl' => $expire], ['key']); + + try { + $builder = $this->connection->getQueryBuilder(); + return $builder->insert('file_locks') + ->setValue('key', $builder->createNamedParameter($path)) + ->setValue('lock', $builder->createNamedParameter($lock)) + ->setValue('ttl', $builder->createNamedParameter($expire)) + ->execute(); + } catch(UniqueConstraintViolationException $e) { + return 0; + } } /** |