Function construct_with_capsule

src/mgr/ActivePyModules.cc:1337–1380

* Helper for our wrapped types that take a capsule in their constructor. */

 * Helper for our wrapped types that take a capsule in their constructor.
 */
PyObject *construct_with_capsule(
    const std::string &module_name,
    const std::string &clsname,
    void *wrapped)
{
  // Look up the OSDMap type which we will construct
  PyObject *module = PyImport_ImportModule(module_name.c_str());
  if (!module) {
    derr << "Failed to import python module:" << dendl;
    derr << handle_pyerror(true, module_name,
			   "construct_with_capsule "s + module_name + " " + clsname) << dendl;
  }
  ceph_assert(module);

  PyObject *wrapper_type = PyObject_GetAttrString(
      module, (const char*)clsname.c_str());
  if (!wrapper_type) {
    derr << "Failed to get python type:" << dendl;
    derr << handle_pyerror(true, module_name,
			   "construct_with_capsule "s + module_name + " " + clsname) << dendl;
  }
  ceph_assert(wrapper_type);

  // Construct a capsule containing an OSDMap.
  auto wrapped_capsule = PyCapsule_New(wrapped, nullptr, nullptr);
  ceph_assert(wrapped_capsule);

  // Construct the python OSDMap
  auto pArgs = PyTuple_Pack(1, wrapped_capsule);
  auto wrapper_instance = PyObject_CallObject(wrapper_type, pArgs);
  if (wrapper_instance == nullptr) {
    derr << "Failed to construct python OSDMap:" << dendl;
    derr << handle_pyerror(true, module_name,
			   "construct_with_capsule "s + module_name + " " + clsname) << dendl;
  }
  ceph_assert(wrapper_instance != nullptr);
  Py_DECREF(pArgs);
  Py_DECREF(wrapped_capsule);

  Py_DECREF(wrapper_type);
  Py_DECREF(module);

  return wrapper_instance;
}

PyObject *ActivePyModules::get_osdmap()
{