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<?php |
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namespace JayaCode\Framework\Core\Database\Connector; |
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use Exception; |
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use PDO; |
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use Stringy\Stringy; |
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/** |
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* Class Connector |
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* @package JayaCode\Framework\Core\Database\Connector |
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*/ |
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abstract class Connector |
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{ |
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/** |
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* @var |
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*/ |
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protected $username; |
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/** |
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* @var |
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*/ |
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protected $password; |
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/** |
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* @var |
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*/ |
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protected $options; |
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/** |
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* Creates a PDO instance representing a connection to a database |
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* @param string $dsn |
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* @param $config |
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* @return PDO |
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*/ |
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public function createConnection($dsn, $config) |
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{ |
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$this->username = arr_get($config, "username"); |
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$this->password = arr_get($config, "password"); |
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$this->options = arr_get($config, "options", array()); |
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try { |
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return new PDO($dsn, $this->username, $this->password, $this->options); |
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} catch (Exception $exception) { |
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return $this->tryAgainLostConnection($exception, $dsn); |
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} |
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} |
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/** |
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* @param Exception $exception |
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* @return bool |
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*/ |
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protected function isErrorLostConnection(Exception $exception) |
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{ |
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$message = $exception->getMessage(); |
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$inStr = array( |
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'server has gone away', |
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'no connection to the server', |
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'Lost connection', |
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'is dead or not enabled', |
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'Error while sending', |
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'decryption failed or bad record mac', |
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'server closed the connection unexpectedly', |
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'SSL connection has been closed unexpectedly', |
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'Deadlock found when trying to get lock', |
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'Error writing data to the connection', |
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'Resource deadlock avoided', |
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); |
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return Stringy::create($message)->containsAny($inStr, false); |
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} |
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/** |
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* @param Exception $exception |
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* @param $dsn |
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* @return PDO |
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* @throws Exception |
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*/ |
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protected function tryAgainLostConnection(Exception $exception, $dsn) |
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{ |
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if ($this->isErrorLostConnection($exception)) { |
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return new PDO($dsn, $this->username, $this->password, $this->options); |
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} else { |
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throw $exception; |
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} |
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} |
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/** |
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* @param $config |
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* @return string |
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*/ |
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abstract protected function getDsn($config); |
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/** |
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* @param $config |
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* @return PDO |
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*/ |
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abstract public function connect($config); |
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} |
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jayacode /
framework
