Exemplo n.º 1
0
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();
    }
}
Exemplo n.º 2
0
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;
}
Exemplo n.º 3
0
    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();
        }
    }
Exemplo n.º 4
0
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();
    }
}
Exemplo n.º 5
0
    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();
            }
        }
    }
Exemplo n.º 6
0
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;
}
Exemplo n.º 7
0
void
IcePy::throwPythonException()
{
    PyException ex;
    ex.raise();
}