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#27250 limiting GET_LOCK key up to 64 char due to changes in MySQL 5.7.5 and later

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This commit is contained in:
Oleg Andreyev 2018-05-14 20:26:58 +03:00
parent d7d4e4169a
commit 9cda96b8b5
1 changed files with 4 additions and 2 deletions
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6
src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
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@ -552,14 +552,16 @@ class PdoSessionHandler implements \SessionHandlerInterface
{
switch ($this->driver) {
case 'mysql':
// MySQL 5.7.5 and later enforces a maximum length on lock names of 64 characters. Previously, no limit was enforced.
$lockId = \substr($sessionId, 0, 64);
// should we handle the return value? 0 on timeout, null on error
// we use a timeout of 50 seconds which is also the default for innodb_lock_wait_timeout
$stmt = $this->pdo->prepare('SELECT GET_LOCK(:key, 50)');
$stmt->bindValue(':key', $sessionId, \PDO::PARAM_STR);
$stmt->bindValue(':key', $lockId, \PDO::PARAM_STR);
$stmt->execute();
$releaseStmt = $this->pdo->prepare('DO RELEASE_LOCK(:key)');
$releaseStmt->bindValue(':key', $sessionId, \PDO::PARAM_STR);
$releaseStmt->bindValue(':key', $lockId, \PDO::PARAM_STR);
return $releaseStmt;
case 'pgsql':