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-rw-r--r--lib/private/DB/SetTransactionIsolationLevel.php10
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/private/DB/SetTransactionIsolationLevel.php b/lib/private/DB/SetTransactionIsolationLevel.php
index b067edde441..9d9323664c8 100644
--- a/lib/private/DB/SetTransactionIsolationLevel.php
+++ b/lib/private/DB/SetTransactionIsolationLevel.php
@@ -26,8 +26,10 @@ declare(strict_types=1);
namespace OC\DB;
use Doctrine\Common\EventSubscriber;
+use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
use Doctrine\DBAL\Event\ConnectionEventArgs;
use Doctrine\DBAL\Events;
+use Doctrine\DBAL\Platforms\MySQLPlatform;
use Doctrine\DBAL\TransactionIsolationLevel;
class SetTransactionIsolationLevel implements EventSubscriber {
@@ -36,7 +38,13 @@ class SetTransactionIsolationLevel implements EventSubscriber {
* @return void
*/
public function postConnect(ConnectionEventArgs $args) {
- $args->getConnection()->setTransactionIsolation(TransactionIsolationLevel::READ_COMMITTED);
+ $connection = $args->getConnection();
+ if ($connection instanceof PrimaryReadReplicaConnection && $connection->isConnectedToPrimary()) {
+ $connection->setTransactionIsolation(TransactionIsolationLevel::READ_COMMITTED);
+ if ($connection->getDatabasePlatform() instanceof MySQLPlatform) {
+ $connection->executeStatement('SET SESSION AUTOCOMMIT=1');
+ }
+ }
}
public function getSubscribedEvents() {