void
IcePy::ServantLocatorWrapper::finished(const Ice::Current& current, const Ice::ObjectPtr&,
const Ice::LocalObjectPtr& cookie)
{
AdoptThread adoptThread; // Ensure the current thread is able to call into Python.
CookiePtr c = CookiePtr::dynamicCast(cookie);
assert(c);
ServantWrapperPtr wrapper = ServantWrapperPtr::dynamicCast(c->servant);
PyObjectHandle servantObj = wrapper->getObject();
PyObjectHandle res = PyObject_CallMethod(_locator, STRCAST("finished"), STRCAST("OOO"), c->current,
servantObj.get(), c->cookie);
if(PyErr_Occurred())
{
PyException ex; // Retrieve the exception before another Python API call clears it.
//
// A locator that calls sys.exit() will raise the SystemExit exception.
// This is normally caught by the interpreter, causing it to exit.
// However, we have no way to pass this exception to the interpreter,
// so we act on it directly.
//
ex.checkSystemExit();
PyObject* userExceptionType = lookupType("Ice.UserException");
if(PyObject_IsInstance(ex.ex.get(), userExceptionType))
{
throw ExceptionWriter(ex.ex);
}
ex.raise();
}
}
void translate_exc_py_to_cpp() {
if (unlikely(describe_py_exception == nullptr)) {
throw Error(MSG(err) <<
"describe_py_exception is uninitialized; "
"can't check for and translate Python exception to C++ exception.");
}
if (likely(not check_for_py_exception())) {
// no exception has occurred.
return;
}
PyException pyex;
describe_py_exception(&pyex);
// recurse to throw a possible cause.
try {
translate_exc_py_to_cpp();
} catch (...) {
pyex.store_cause();
}
// throw exception without cause.
throw pyex;
}
void invoke(const Ice::ConnectionPtr& con)
{
AdoptThread adoptThread; // Ensure the current thread is able to call into Python.
#ifndef NDEBUG
ConnectionObject* c = reinterpret_cast<ConnectionObject*>(_con);
assert(con == *(c->connection));
#endif
PyObjectHandle args = Py_BuildValue(STRCAST("(O)"), _con);
assert(_cb);
PyObjectHandle tmp = PyObject_Call(_cb, args.get(), 0);
if(PyErr_Occurred())
{
PyException ex; // Retrieve it before another Python API call clears it.
//
// A callback that calls sys.exit() will raise the SystemExit exception.
// This is normally caught by the interpreter, causing it to exit.
// However, we have no way to pass this exception to the interpreter,
// so we act on it directly.
//
ex.checkSystemExit();
ex.raise();
}
}
void
IcePy::ServantLocatorWrapper::deactivate(const string& category)
{
AdoptThread adoptThread; // Ensure the current thread is able to call into Python.
PyObjectHandle res = PyObject_CallMethod(_locator, STRCAST("deactivate"), STRCAST("s"), category.c_str());
if(PyErr_Occurred())
{
PyException ex; // Retrieve the exception before another Python API call clears it.
//
// A locator that calls sys.exit() will raise the SystemExit exception.
// This is normally caught by the interpreter, causing it to exit.
// However, we have no way to pass this exception to the interpreter,
// so we act on it directly.
//
ex.checkSystemExit();
ex.raise();
}
}
void invoke(const string& methodName, const Ice::ConnectionPtr& con)
{
AdoptThread adoptThread; // Ensure the current thread is able to call into Python.
#ifndef NDEBUG
ConnectionObject* c = reinterpret_cast<ConnectionObject*>(_con);
assert(con == *(c->connection));
#endif
if(!PyObject_HasAttrString(_cb, STRCAST(methodName.c_str())))
{
ostringstream ostr;
ostr << "connection callback object does not define " << methodName << "()";
string str = ostr.str();
PyErr_Warn(PyExc_RuntimeWarning, const_cast<char*>(str.c_str()));
}
else
{
PyObjectHandle args = Py_BuildValue(STRCAST("(O)"), _con);
PyObjectHandle method = PyObject_GetAttrString(_cb, STRCAST(methodName.c_str()));
assert(method.get());
PyObjectHandle tmp = PyObject_Call(method.get(), args.get(), 0);
if(PyErr_Occurred())
{
PyException ex; // Retrieve it before another Python API call clears it.
//
// A callback that calls sys.exit() will raise the SystemExit exception.
// This is normally caught by the interpreter, causing it to exit.
// However, we have no way to pass this exception to the interpreter,
// so we act on it directly.
//
ex.checkSystemExit();
ex.raise();
}
}
}
Ice::ObjectPtr
IcePy::ServantLocatorWrapper::locate(const Ice::Current& current, Ice::LocalObjectPtr& cookie)
{
AdoptThread adoptThread; // Ensure the current thread is able to call into Python.
CookiePtr c = new Cookie;
c->current = createCurrent(current);
if(!c->current)
{
throwPythonException();
}
//
// Invoke locate on the Python object. We expect the object to
// return either the servant by itself, or the servant in a tuple
// with an optional cookie object.
//
PyObjectHandle res = PyObject_CallMethod(_locator, STRCAST("locate"), STRCAST("O"), c->current);
if(PyErr_Occurred())
{
PyException ex; // Retrieve the exception before another Python API call clears it.
//
// A locator that calls sys.exit() will raise the SystemExit exception.
// This is normally caught by the interpreter, causing it to exit.
// However, we have no way to pass this exception to the interpreter,
// so we act on it directly.
//
ex.checkSystemExit();
PyObject* userExceptionType = lookupType("Ice.UserException");
if(PyObject_IsInstance(ex.ex.get(), userExceptionType))
{
throw ExceptionWriter(ex.ex);
}
ex.raise();
}
if(res.get() == Py_None)
{
return 0;
}
PyObject* servantObj = 0;
PyObject* cookieObj = Py_None;
if(PyTuple_Check(res.get()))
{
if(PyTuple_GET_SIZE(res.get()) > 2)
{
PyErr_Warn(PyExc_RuntimeWarning, STRCAST("invalid return value for ServantLocator::locate"));
return 0;
}
servantObj = PyTuple_GET_ITEM(res.get(), 0);
if(PyTuple_GET_SIZE(res.get()) > 1)
{
cookieObj = PyTuple_GET_ITEM(res.get(), 1);
}
}
else
{
servantObj = res.get();
}
//
// Verify that the servant is an Ice object.
//
if(!PyObject_IsInstance(servantObj, _objectType))
{
PyErr_Warn(PyExc_RuntimeWarning, STRCAST("return value of ServantLocator::locate is not an Ice object"));
return 0;
}
//
// Save state in our cookie and return a wrapper for the servant.
//
c->servant = createServantWrapper(servantObj);
c->cookie = cookieObj;
Py_INCREF(c->cookie);
cookie = c;
return c->servant;
}
void
IcePy::throwPythonException()
{
PyException ex;
ex.raise();
}
