nautilus_common/python/
handler.rs

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1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2025 2Nautech Systems Pty Ltd. All rights reserved.
3//  https://nautechsystems.io
4//
5//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6//  You may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9//  Unless required by applicable law or agreed to in writing, software
10//  distributed under the License is distributed on an "AS IS" BASIS,
11//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//  See the License for the specific language governing permissions and
13//  limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16use std::{any::Any, sync::Arc};
17
18use pyo3::prelude::*;
19use ustr::Ustr;
20
21use crate::msgbus::handler::MessageHandler;
22
23#[cfg_attr(
24    feature = "python",
25    pyo3::pyclass(module = "nautilus_trader.core.nautilus_pyo3.common")
26)]
27#[derive(Debug, Clone)]
28pub struct PythonMessageHandler {
29    id: Ustr,
30    handler: Arc<PyObject>,
31}
32
33#[pymethods]
34impl PythonMessageHandler {
35    /// Creates a new [`PythonMessageHandler`] instance.
36    #[new]
37    #[must_use]
38    pub fn new(id: &str, handler: PyObject) -> Self {
39        let id = Ustr::from(id);
40        Self {
41            id,
42            handler: Arc::new(handler),
43        }
44    }
45}
46
47impl MessageHandler for PythonMessageHandler {
48    #[allow(unused_variables)]
49    fn handle(&self, message: &dyn Any) {
50        // TODO: convert message to PyObject
51        let py_event = ();
52        let result =
53            pyo3::Python::with_gil(|py| self.handler.call_method1(py, "handle", (py_event,)));
54        if let Err(e) = result {
55            eprintln!("Error calling handle method: {e:?}");
56        }
57    }
58
59    fn id(&self) -> Ustr {
60        self.id
61    }
62
63    fn as_any(&self) -> &dyn Any {
64        self
65    }
66}
nautilus_common/python/handler.rs

nautilus_common/python/
handler.rs
