func()

in adapter/pkg/provider/provider.go [100:140]

• 40 lines of code
• 10 McCabe index (conditional complexity)

func (pv *paramValue) extractValue(requirements labels.Requirements) error {
	vv := make([]string, 10)
	for _, r := range requirements {
		if !strings.HasPrefix(r.Key(), pv.key) {
			continue
		}
		kk := strings.Split(r.Key(), ".")
		if len(kk) == 1 {
			vv, _ = bufferEntity(vv, 0, r, nil)
			pv.val = &vv[0]
			return nil
		} else if len(kk) < 3 {
			return fmt.Errorf("invalid label key:%s", r.Key())
		}
		i, err := strconv.ParseInt(kk[2], 10, 8)
		if err != nil {
			return fmt.Errorf("failed to parse index string to int: %v", err)
		}

		index := int(i)
		switch kk[1] {
		case labelValueTypeStr:
			vv, _ = bufferEntity(vv, index, r, nil)
		case labelValueTypeByte:
			vv, err = bufferEntity(vv, index, r, func(encoded string) (string, error) {
				var bytes []byte
				bytes, err = hex.DecodeString(encoded)
				if err != nil {
					return "", fmt.Errorf("failed to decode hex to string: %v", err)
				}
				return string(bytes), nil
			})
			if err != nil {
				return err
			}
		}
	}
	val := strings.Join(vv, "")
	pv.val = &val
	return nil
}