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use std::collections::HashMap;
use anyhow::Error;
use http::{Request, Uri};
use hyper::Body;
use log::info;
use pyo3::{
pyclass, pymethods,
types::{PyBytes, PyModule},
IntoPy, PyAny, PyObject, PyResult, Python, ToPyObject,
};
use self::resolver::{MatrixConnector, MatrixResolver};
pub mod resolver;
/// Called when registering modules with python.
pub fn register_module(py: Python<'_>, m: &PyModule) -> PyResult<()> {
let child_module = PyModule::new(py, "http")?;
child_module.add_class::<HttpClient>()?;
child_module.add_class::<MatrixResponse>()?;
m.add_submodule(child_module)?;
// We need to manually add the module to sys.modules to make `from
// synapse.synapse_rust import push` work.
py.import("sys")?
.getattr("modules")?
.set_item("synapse.synapse_rust.http", child_module)?;
Ok(())
}
#[derive(Clone, Debug)]
pub struct Bytes(pub Vec<u8>);
impl ToPyObject for Bytes {
fn to_object(&self, py: Python<'_>) -> pyo3::PyObject {
PyBytes::new(py, &self.0).into_py(py)
}
}
impl IntoPy<PyObject> for Bytes {
fn into_py(self, py: Python<'_>) -> PyObject {
self.to_object(py)
}
}
#[derive(Debug)]
#[pyclass]
pub struct MatrixResponse {
#[pyo3(get)]
pub code: u16,
#[pyo3(get)]
pub phrase: &'static str,
#[pyo3(get)]
pub content: Bytes,
#[pyo3(get)]
pub headers: HashMap<String, Bytes>,
}
#[pyclass]
#[derive(Clone)]
pub struct HttpClient {
client: hyper::Client<MatrixConnector>,
resolver: MatrixResolver,
}
impl HttpClient {
pub fn new() -> Result<Self, Error> {
let resolver = MatrixResolver::new()?;
let client =
hyper::Client::builder().build(MatrixConnector::with_resolver(resolver.clone()));
Ok(HttpClient { client, resolver })
}
pub async fn async_request(
&self,
url: String,
method: String,
headers: HashMap<Vec<u8>, Vec<Vec<u8>>>,
body: Option<Vec<u8>>,
) -> Result<MatrixResponse, Error> {
let uri: Uri = url.try_into()?;
let mut builder = Request::builder().method(&*method).uri(uri.clone());
for (key, values) in headers {
for value in values {
builder = builder.header(key.clone(), value);
}
}
if uri.scheme_str() == Some("matrix") {
let endpoints = self.resolver.resolve_server_name_from_uri(&uri).await?;
if let Some(endpoint) = endpoints.first() {
builder = builder.header("Host", &endpoint.host_header);
}
}
let request = if let Some(body) = body {
builder.body(Body::from(body))?
} else {
builder.body(Body::empty())?
};
let response = self.client.request(request).await?;
let code = response.status().as_u16();
let phrase = response.status().canonical_reason().unwrap_or_default();
let headers = response
.headers()
.iter()
.map(|(k, v)| (k.to_string(), Bytes(v.as_bytes().to_owned())))
.collect();
let body = response.into_body();
let bytes = hyper::body::to_bytes(body).await?;
let content = Bytes(bytes.to_vec());
Ok(MatrixResponse {
code,
phrase,
content,
headers,
})
}
}
#[pymethods]
impl HttpClient {
#[new]
fn py_new() -> Result<Self, Error> {
Self::new()
}
fn request<'a>(
&'a self,
py: Python<'a>,
url: String,
method: String,
headers: HashMap<Vec<u8>, Vec<Vec<u8>>>,
body: Option<Vec<u8>>,
) -> PyResult<&'a PyAny> {
pyo3::prepare_freethreaded_python();
let client = self.clone();
pyo3_asyncio::tokio::future_into_py(py, async move {
let resp = client.async_request(url, method, headers, body).await?;
Ok(resp)
})
}
}
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