logging.go
func GetLogger(name string) (*Logger, error) {
	if name == "default" {
		return getDefaultLogger(), nil
	}
	lock.RLock()
	logger, ok := loggers[name]
	lock.RUnlock()
	if !ok {
		return nil, fmt.Errorf("unknown logger %s", name)
	}
	return logger, nil
}
func GetLogger(name string) (*Logger, error) {
	if name == "default" {
		return getDefaultLogger(), nil
	}
	lock.RLock()
	logger, ok := loggers[name]
	lock.RUnlock()
	if !ok {
		return nil, fmt.Errorf("unknown logger %s", name)
	}
	return logger, nil
}
func GetLogger ( name string ) ( * Logger , error ) { if name == " " { return getDefaultLogger ( ) , nil } lock . RLock ( ) logger , ok := loggers [ name ] lock . RUnlock ( ) if ! ok { return nil , fmt . Errorf ( " " , name ) } return logger , nil }
// GetLogger returns logger instance based on provided name.
// If logger does not exist, error will be returned.
GetLogger returns logger instance based on provided name . If logger does not exist error will be returned .