func setFilterHandler(level string, logger log.Logger, handler log.Handler) error {
if level == "none" {
logger.SetHandler(log.DiscardHandler())
return nil
}
lvl, err := log.LvlFromString(level)
if err != nil {
return fmt.Errorf("Bad log level: %v", err)
}
logger.SetHandler(log.LvlFilterHandler(lvl, handler))
return nil
}
