/**
* Establish a database connection and create the connection object
*
* @param Setting $settings
* @return PDO
* @throws Exception
*/
private function doConnect(Setting $settings) : PDO
{
try {
# Create a new PDO connection
$connection = new PDO($settings->getSetting('dsn'), $settings->getSetting('user'), $settings->getSetting('password'));
} catch (PDOException $exception) {
# Stop the execution
throw new Exception($exception->getMessage());
}
# Set attributes
$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$connection->setAttribute(PDO::ATTR_CASE, PDO::CASE_LOWER);
return $connection;
}
/**
* Connects to the Redis server
*
* @param Setting $settings Setting instance with the required attributes
* @return Redis Current object to daisy chain method calls
*
* @throws Exception When the Redis server was not reached
*/
private function doConnect(Setting $settings) : self
{
# Connection
$connection = new \Redis();
$connection->connect($settings->getSetting('address'), $settings->getSetting('port'), $settings->getSetting('timeout'));
# When error occurred
if ($connection->getLastError() !== null) {
throw new Exception('Failed to connect to the Redis server: ' . $connection->getLastError());
}
# Set options
$connection->setOption(\Redis::OPT_SERIALIZER, \Redis::SERIALIZER_PHP);
# Store the connection
$this->connection = $connection;
return $this;
}