Function readPythonProtobuf

src/python/native_common/common.hpp:65–95

 */
template <typename T>
bool readPythonProtobuf(PyObject* obj, T* t)
{
  if (obj == Py_None) {
    std::cerr << "None object given where protobuf expected" << std::endl;
    return false;
  }
  PyObject* res = PyObject_CallMethod(obj,
                                      (char*) "SerializeToString",
                                      (char*) nullptr);
  if (res == nullptr) {
    std::cerr << "Failed to call Python object's SerializeToString "
         << "(perhaps it is not a protobuf?)" << std::endl;
    PyErr_Print();
    return false;
  }
  char* chars;
  Py_ssize_t len;
  if (PyString_AsStringAndSize(res, &chars, &len) < 0) {
    std::cerr << "SerializeToString did not return a string" << std::endl;
    PyErr_Print();
    Py_DECREF(res);
    return false;
  }
  google::protobuf::io::ArrayInputStream stream(chars, len);
  bool success = t->ParseFromZeroCopyStream(&stream);
  if (!success) {
    std::cerr << "Could not deserialize protobuf as expected type" << std::endl;
  }
  Py_DECREF(res);
  return success;
}


/**