logger.go
func (dl *DefaultLogger) Info(message string, params ...interface{}) {
	dl.logger.Infof(fmt.Sprintf("%s %s", caller(), message), params...)
}
func (dl *DefaultLogger) Info(message string, params ...interface{}) {
	dl.logger.Infof(fmt.Sprintf("%s %s", caller(), message), params...)
}
// Info formats a given message according to given params to log with level Info.