func extractValue()

in pkg/cloud/filter/filter.go [293:321]

• 28 lines of code
• 8 McCabe index (conditional complexity)

func extractValue(path string, o interface{}) (interface{}, error) {
	parts := strings.Split(path, ".")
	for _, f := range parts {
		v := reflect.ValueOf(o)
		// Dereference Ptr to handle *struct.
		if v.Kind() == reflect.Ptr {
			if v.IsNil() {
				return nil, errors.New("field is nil")
			}
			v = v.Elem()
		}
		if v.Kind() != reflect.Struct {
			return nil, fmt.Errorf("cannot get field from non-struct (%T)", o)
		}
		v = v.FieldByName(snakeToCamelCase(f))
		if !v.IsValid() {
			return nil, fmt.Errorf("cannot get field %q as it is not a valid field in %T", f, o)
		}
		if !v.CanInterface() {
			return nil, fmt.Errorf("cannot get field %q in obj of type %T", f, o)
		}
		o = v.Interface()
	}
	switch o.(type) {
	case string, int, bool:
		return o, nil
	}
	return nil, fmt.Errorf("unhandled object of type %T", o)
}