Function make_dynamic_attr

extensions/expression-language/Expression.cpp:92–107

}

Expression make_dynamic_attr(const std::string &attribute_id) {
  return make_dynamic([attribute_id](const Parameters &params, const std::vector<Expression>& /*sub_exprs*/) -> Value {

    std::string result;
    const auto cur_flow_file = params.flow_file.lock();
    if (cur_flow_file && cur_flow_file->getAttribute(attribute_id, result)) {
      return Value(result);
    } else {
      auto registry = params.registry_.lock();
      if (registry && registry->getConfigurationProperty(attribute_id , result)) {
        return Value(result);
      }
    }
    return Value();
  });
}

Value resolve_user_id(const std::vector<Value> &args) {
  std::string name;