Golang Config.Path示例

示例#1

文件： select.go 项目： YaSuenag/hsbeat

func BuildSelectorFromConfig(
	cfg *common.Config,
	settings Settings,
) (Selector, error) {
	var sel []SelectorExpr

	key := settings.Key
	multiKey := settings.MultiKey
	found := false

	if cfg.HasField(multiKey) {
		found = true
		sub, err := cfg.Child(multiKey, -1)
		if err != nil {
			return Selector{}, err
		}

		var table []*common.Config
		if err := sub.Unpack(&table); err != nil {
			return Selector{}, err
		}

		for _, config := range table {
			action, err := buildSingle(config, key)
			if err != nil {
				return Selector{}, err
			}

			if action != nilSelector {
				sel = append(sel, action)
			}
		}
	}

	if settings.EnableSingleOnly && cfg.HasField(key) {
		found = true

		// expect event-format-string
		str, err := cfg.String(key, -1)
		if err != nil {
			return Selector{}, err
		}

		fmtstr, err := fmtstr.CompileEvent(str)
		if err != nil {
			return Selector{}, fmt.Errorf("%v in %v", err, cfg.PathOf(key))
		}

		if fmtstr.IsConst() {
			str, err := fmtstr.Run(common.MapStr{})
			if err != nil {
				return Selector{}, err
			}

			if str != "" {
				sel = append(sel, ConstSelectorExpr(str))
			}
		} else {
			sel = append(sel, FmtSelectorExpr(fmtstr, ""))
		}
	}

	if settings.FailEmpty && !found {
		if settings.EnableSingleOnly {
			return Selector{}, fmt.Errorf("missing required '%v' or '%v' in %v",
				key, multiKey, cfg.Path())
		}

		return Selector{}, fmt.Errorf("missing required '%v' in %v",
			multiKey, cfg.Path())
	}

	return MakeSelector(sel...), nil
}