in /srv/web/www/vendor/yiisoft/yii2/db/Connection.php at line 600
$token = 'Opening DB connection: ' . $this->dsn; try { Yii::info($token, __METHOD__); Yii::beginProfile($token, __METHOD__); $this->pdo = $this->createPdoInstance(); $this->initConnection(); Yii::endProfile($token, __METHOD__); } catch (\PDOException $e) { Yii::endProfile($token, __METHOD__); throw new Exception($e->getMessage(), $e->errorInfo, (int) $e->getCode(), $e); } } /** * Closes the currently active DB connection. * It does nothing if the connection is already closed. */ public function close() {
* Returns the PDO instance for the currently active master connection. * This method will open the master DB connection and then return [[pdo]]. * @return PDO the PDO instance for the currently active master connection. */ public function getMasterPdo() { $this->open(); return $this->pdo; } /** * Returns the currently active slave connection. * If this method is called the first time, it will try to open a slave connection when [[enableSlaves]] is true.
* is available and `$fallbackToMaster` is false. */ public function getSlavePdo($fallbackToMaster = true) { $db = $this->getSlave(false); if ($db === null) { return $fallbackToMaster ? $this->getMasterPdo() : null; } else { return $db->pdo; } } /**
if ($this->db->getTransaction()) { // master is in a transaction. use the same connection. $forRead = false; } if ($forRead || $forRead === null && $this->db->getSchema()->isReadQuery($sql)) { $pdo = $this->db->getSlavePdo(); } else { $pdo = $this->db->getMasterPdo(); } try { $this->pdoStatement = $pdo->prepare($sql);