Files
synapse/rust/src/homeserver.rs
T
Erik JohnstonandClaude Opus 5 9b5697d378 Move per-homeserver Rust state into a RustRuntime object on the HomeServer (#20011)
Previously the tokio runtime was stashed in a hidden attribute on the
reactor object, installed lazily by whichever Rust code first needed it,
and started via `callWhenRunning`.

Instead, we create a `RustRuntime` (accessible via
`HomeServer.get_rust_runtime()`) that holds any per-reactor Rust state,
such as the tokio runtime. It is constructed lazily on use. Rust
consumers (`HttpClient`, `VersionsHandler`, the Python DB pool wrapper)
now receive the runtime or reactor handle explicitly, and the
`reactor.run()` / manual-startup workarounds in tests are no longer
needed.

We also add helper wrappers in Rust for `Reactor` and `HomeServer` that
exposes the needed functionality.

The aim is to allow us to have a Rust-side clock (mainly to get the
current time), that respects the unit test per-reactor time management.

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-21 18:48:37 +01:00

103 lines
3.3 KiB
Rust

/*
* This file is licensed under the Affero General Public License (AGPL) version 3.
*
* Copyright (C) 2026 Element Creations Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* See the GNU Affero General Public License for more details:
* <https://www.gnu.org/licenses/agpl-3.0.html>.
*
*/
//! A typed wrapper around the Python `HomeServer`.
use pyo3::{intern, prelude::*, types::PyDict};
use crate::config::SynapseHomeServerConfig;
use crate::reactor::Reactor;
use crate::runtime::RustRuntime;
/// The Python `HomeServer`, as seen from Rust.
///
/// This is a wrapper around a foreign Python object. No validation is
/// performed, on the assumption the Python side is correctly typed.
pub struct HomeServer(Py<PyAny>);
impl<'a, 'py> FromPyObject<'a, 'py> for HomeServer {
type Error = PyErr;
fn extract(obj: Borrowed<'a, 'py, PyAny>) -> PyResult<Self> {
Ok(HomeServer(obj.to_owned().unbind()))
}
}
impl HomeServer {
/// Fetch the Twisted reactor in use by this HomeServer.
pub fn get_reactor(&self, py: Python<'_>) -> PyResult<Reactor> {
self.0
.bind(py)
.call_method0(intern!(py, "get_reactor"))?
.extract()
}
/// Register a system event trigger with the HomeServer so it can be cleanly
/// removed when the HomeServer is shutdown.
pub fn register_sync_shutdown_handler(
&self,
py: Python<'_>,
callable: &Bound<'_, PyAny>,
) -> PyResult<()> {
let kwargs = PyDict::new(py);
kwargs.set_item(intern!(py, "phase"), intern!(py, "after"))?;
kwargs.set_item(intern!(py, "eventType"), intern!(py, "shutdown"))?;
kwargs.set_item(intern!(py, "shutdown_func"), callable)?;
self.0.bind(py).call_method(
intern!(py, "register_sync_shutdown_handler"),
(),
Some(&kwargs),
)?;
Ok(())
}
/// The per-homeserver Rust state (`hs.get_rust_runtime()`), which gives
/// access to the tokio runtime and the reactor.
pub fn get_rust_runtime(&self, py: Python<'_>) -> PyResult<RustRuntime> {
Ok(self
.0
.bind(py)
.call_method0(intern!(py, "get_rust_runtime"))?
.cast::<RustRuntime>()?
.get()
.clone())
}
/// The Rust-side view of `hs.config`.
pub fn config(&self, py: Python<'_>) -> PyResult<SynapseHomeServerConfig> {
self.0.bind(py).getattr(intern!(py, "config"))?.extract()
}
/// The Synapse `Clock` (`hs.get_clock()`).
// TODO: give the clock a typed wrapper of its own.
pub fn get_clock(&self, py: Python<'_>) -> PyResult<Py<PyAny>> {
Ok(self
.0
.bind(py)
.call_method0(intern!(py, "get_clock"))?
.unbind())
}
/// The main database pool (`hs.get_datastores().main.db_pool`).
pub fn main_database_pool<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {
self.0
.bind(py)
.call_method0(intern!(py, "get_datastores"))?
.getattr(intern!(py, "main"))?
.getattr(intern!(py, "db_pool"))
}
}