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use std::time::Duration;
use tokio::net::TcpStream;
use tokio::sync::{mpsc, oneshot};
use super::super::control::{ControlCommand, ControlError, ControlStartRequest};
use super::super::http::{read_http_request, write_error_response, write_json_response};
pub(super) async fn handle_control_connection(
mut socket: TcpStream,
auth_token: Option<&str>,
control_tx: mpsc::UnboundedSender<ControlCommand>,
) {
let request = match read_http_request(&mut socket).await {
Ok(request) => request,
Err(err) => {
if write_error_response(&mut socket, err.status, &err.message)
.await
.is_err()
{
// Socket closed while writing error response.
}
return;
}
};
if let Some(token) = auth_token {
let header = request
.headers
.get("authorization")
.map(|value| value.trim().to_owned());
let expected = format!("Bearer {}", token);
if header.as_deref() != Some(expected.as_str()) {
if write_error_response(&mut socket, 401, "Unauthorized")
.await
.is_err()
{
// Socket closed while writing error response.
}
return;
}
}
match (request.method.as_str(), request.path.as_str()) {
("POST", "/start") => {
let start_request = if request.body.is_empty() {
ControlStartRequest::default()
} else {
match serde_json::from_slice::<ControlStartRequest>(&request.body) {
Ok(value) => value,
Err(err) => {
if write_error_response(&mut socket, 400, &format!("Invalid JSON: {}", err))
.await
.is_err()
{
// Socket closed while writing error response.
}
return;
}
}
};
let (respond_to, response_rx) = oneshot::channel();
if control_tx
.send(ControlCommand::Start {
request: start_request,
respond_to,
})
.is_err()
{
if write_error_response(&mut socket, 503, "Controller unavailable")
.await
.is_err()
{
// Socket closed while writing error response.
}
return;
}
let response = tokio::time::timeout(Duration::from_secs(5), response_rx)
.await
.map_or_else(
|_| Err(ControlError::new(504, "Controller response timed out")),
|result| {
result.unwrap_or_else(|_| {
Err(ControlError::new(503, "Controller unavailable"))
})
},
);
match response {
Ok(response) => {
if write_json_response(&mut socket, 200, &response)
.await
.is_err()
{
// Socket closed while writing response.
}
}
Err(err) => {
if write_error_response(&mut socket, err.status, &err.message)
.await
.is_err()
{
// Socket closed while writing error response.
}
}
}
}
("POST", "/stop") => {
let (respond_to, response_rx) = oneshot::channel();
if control_tx
.send(ControlCommand::Stop { respond_to })
.is_err()
{
if write_error_response(&mut socket, 503, "Controller unavailable")
.await
.is_err()
{
// Socket closed while writing error response.
}
return;
}
let response = tokio::time::timeout(Duration::from_secs(5), response_rx)
.await
.map_or_else(
|_| Err(ControlError::new(504, "Controller response timed out")),
|result| {
result.unwrap_or_else(|_| {
Err(ControlError::new(503, "Controller unavailable"))
})
},
);
match response {
Ok(response) => {
if write_json_response(&mut socket, 200, &response)
.await
.is_err()
{
// Socket closed while writing response.
}
}
Err(err) => {
if write_error_response(&mut socket, err.status, &err.message)
.await
.is_err()
{
// Socket closed while writing error response.
}
}
}
}
_ => {
if write_error_response(&mut socket, 404, "Not found")
.await
.is_err()
{
// Socket closed while writing error response.
}
}
}
}