anki/pylib/rsbridge/lib.rs
Damien Elmes 0570cfdf48 Migrate from slog to tracing
The Rust community appear to have converged on tracing - it's used by
the Rust compiler, and receives close to 10x the number of downloads
that slog does. Its API is more ergonomic, and it does a much nicer
job with async rust.

To make this change, we no longer pass around explicit loggers, and rely
on a globally-registered one. The log file location has been changed
from one in each profile folder to a single one in the base folder. This
will remain empty for most users, since only errors are logged by default,
but may be useful for debugging future changes.
2022-12-24 10:44:40 +10:00

82 lines
2.2 KiB
Rust

// Copyright: Ankitects Pty Ltd and contributors
// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
use anki::{
backend::{init_backend, Backend as RustBackend},
log::set_global_logger,
};
use pyo3::{
create_exception, exceptions::PyException, prelude::*, types::PyBytes, wrap_pyfunction,
};
#[pyclass(module = "_rsbridge")]
struct Backend {
backend: RustBackend,
}
create_exception!(_rsbridge, BackendError, PyException);
#[pyfunction]
fn buildhash() -> &'static str {
anki::version::buildhash()
}
#[pyfunction]
fn initialize_logging(path: Option<&str>) -> PyResult<()> {
set_global_logger(path).map_err(|e| PyException::new_err(e.to_string()))
}
#[pyfunction]
fn open_backend(init_msg: &PyBytes) -> PyResult<Backend> {
match init_backend(init_msg.as_bytes()) {
Ok(backend) => Ok(Backend { backend }),
Err(e) => Err(PyException::new_err(e)),
}
}
#[pymethods]
impl Backend {
fn command(
&self,
py: Python,
service: u32,
method: u32,
input: &PyBytes,
) -> PyResult<PyObject> {
let in_bytes = input.as_bytes();
py.allow_threads(|| self.backend.run_method(service, method, in_bytes))
.map(|out_bytes| {
let out_obj = PyBytes::new(py, &out_bytes);
out_obj.into()
})
.map_err(BackendError::new_err)
}
/// This takes and returns JSON, due to Python's slow protobuf
/// encoding/decoding.
fn db_command(&self, py: Python, input: &PyBytes) -> PyResult<PyObject> {
let in_bytes = input.as_bytes();
let out_res = py.allow_threads(|| {
self.backend
.run_db_command_bytes(in_bytes)
.map_err(BackendError::new_err)
});
let out_bytes = out_res?;
let out_obj = PyBytes::new(py, &out_bytes);
Ok(out_obj.into())
}
}
// Module definition
//////////////////////////////////
#[pymodule]
fn _rsbridge(_py: Python, m: &PyModule) -> PyResult<()> {
m.add_class::<Backend>()?;
m.add_wrapped(wrap_pyfunction!(buildhash)).unwrap();
m.add_wrapped(wrap_pyfunction!(open_backend)).unwrap();
m.add_wrapped(wrap_pyfunction!(initialize_logging)).unwrap();
Ok(())
}