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Catch and ignore UniqueConstraintViolationException in file cache insert #12368

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Catch and ignore UniqueConstraintViolationException in file cache insert #12368

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20 changes: 14 additions & 6 deletions lib/private/Files/Cache/Cache.php
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@

namespace OC\Files\Cache;

use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
use OCP\DB\QueryBuilder\IQueryBuilder;
use Doctrine\DBAL\Driver\Statement;
use OCP\Files\Cache\ICache;
Expand Down Expand Up @@ -268,12 +269,19 @@ public function insert($file, array $data) {
return trim($item, "`");
}, $queryParts);
$values = array_combine($queryParts, $params);
if (\OC::$server->getDatabaseConnection()->insertIfNotExist('*PREFIX*filecache', $values, [
'storage',
'path_hash',
])
) {
return (int)$this->connection->lastInsertId('*PREFIX*filecache');
try {
if (\OC::$server->getDatabaseConnection()->insertIfNotExist('*PREFIX*filecache', $values, [
'storage',
'path_hash',
])
) {
return (int)$this->connection->lastInsertId('*PREFIX*filecache');
}
} catch (UniqueConstraintViolationException $e) {
// if this is thrown then a concurrent insert happened between the insert and the sub-select in the insert, that should have avoided it
// it's fine to ignore this then
//
// more discussions about this can be found at https://github.com/nextcloud/server/pull/12315
}

// The file was created in the mean time
Expand Down