/**
* @param Config $config
* @return \PDO
* @throws UnknownDatabaseException
* @throws RuntimeException
*/
public function __invoke(Config $config)
{
$attempt = 0;
$maxAttempts = $config->getMaximumAttempts();
while (++$attempt <= $maxAttempts) {
try {
$connection = $this->create($config);
$connection->prepare('SET NAMES ?, time_zone = ?')->execute([$config->getCharset(), $config->getTimezone()]);
return $connection;
} catch (\PDOException $exception) {
if (UnknownDatabaseException::isUnknownDatabase($exception)) {
throw UnknownDatabaseException::createFromUnknownDatabase($config->getDatabase(), $exception);
}
if ($maxAttempts > $attempt) {
// more tries left, so we'll log this error
// $template = 'Failed connection to "%s" on attempt %d with error "%s"';
// $dsn = $config->getDsn();
// error_log(sprintf($template, $dsn, $attempt, $exception->getMessage()));
// $logger->error(sprintf($template, $dsn, $attempt, $exception->getMessage()), [
// 'e_message' => $exception->getMessage(),
// 'e_code' => $exception->getCode(),
// 'e_file' => $exception->getFile(),
// 'e_line' => $exception->getLine(),
// 'e_trace' => $exception->getTraceAsString()
// ]);
// sleep with some exponential backoff
$msec = pow(2, $attempt) * 50;
usleep($msec * 1000);
} else {
// ran out of attempts, throw the last error
throw RuntimeException::createFromException($exception);
}
}
}
}
public function testCorrectlyEvaluatesPdoExceptionForNonDatabaseError()
{
$code = '42000';
$message = "SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FRM foo' at line 1";
$pdoException = new \PDOException($message, $code);
$this->assertFalse(UnknownDatabaseException::isUnknownDatabase($pdoException));
}
/**
* Set database
*
* @param string $dbname
* @return Adapter
* @throws UnknownDatabaseException
*/
public function setDatabase($dbname)
{
$this->config->setDatabase($dbname);
if ($this->connection) {
try {
$this->query('USE ' . $this->quoter->quoteIdentifier($dbname));
} catch (RuntimeException $exception) {
$prevException = $exception->getPrevious();
if (UnknownDatabaseException::isUnknownDatabase($prevException)) {
throw UnknownDatabaseException::createFromUnknownDatabase($dbname, $prevException);
}
throw $exception;
}
}
return $this;
}