Function createPythonProtobuf

src/python/native_common/common.hpp:105–135

 */
template <typename T>
PyObject* createPythonProtobuf(const T& t, const char* typeName)
{
  PyObject* dict = PyModule_GetDict(mesos_pb2);
  if (dict == nullptr) {
    PyErr_Format(PyExc_Exception, "PyModule_GetDict failed");
    return nullptr;
  }

  PyObject* type = PyDict_GetItemString(dict, typeName);
  if (type == nullptr) {
    PyErr_Format(PyExc_Exception, "Could not resolve mesos_pb2.%s", typeName);
    return nullptr;
  }
  if (!PyType_Check(type)) {
    PyErr_Format(PyExc_Exception, "mesos_pb2.%s is not a type", typeName);
    return nullptr;
  }

  std::string str;
  if (!t.SerializeToString(&str)) {
    PyErr_Format(PyExc_Exception, "C++ %s SerializeToString failed", typeName);
    return nullptr;
  }

  // Propagates any exception that might happen in FromString.
  return PyObject_CallMethod(type,
                             (char*) "FromString",
                             (char*) "s#",
                             str.data(),
                             str.size());
}


// construct<T>() should take PyObject* as an argument, try to convert that