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|
use crate::prelude::*;
use gotham::state::FromState as _;
pub fn run(
state: gotham::state::State,
) -> (gotham::state::State, hyper::Response<hyper::Body>) {
let session = gotham::middleware::session::SessionData::<
crate::web::SessionData,
>::borrow_from(&state);
let auth = if let Some(login) = &session.login {
&login.auth
} else {
return (
state,
hyper::Response::builder()
.status(hyper::StatusCode::FORBIDDEN)
.body(hyper::Body::empty())
.unwrap(),
);
};
let config = crate::web::Config::borrow_from(&state);
let (_, address) = config.server_address;
let connector: crate::client::Connector<_> = Box::new(move || {
Box::new(
tokio::net::tcp::TcpStream::connect(&address)
.context(crate::error::Connect { address }),
)
});
let client =
crate::client::Client::list("teleterm-web", connector, &auth);
let (w_sessions, r_sessions) = tokio::sync::oneshot::channel();
tokio::spawn(
Client::new(client, w_sessions)
.map_err(|e| log::warn!("error listing: {}", e)),
);
match r_sessions.wait().unwrap() {
Ok(sessions) => {
let body = serde_json::to_string(&sessions).unwrap();
(state, hyper::Response::new(hyper::Body::from(body)))
}
Err(e) => {
log::warn!("error retrieving sessions: {}", e);
(
state,
hyper::Response::new(hyper::Body::from(format!(
"error retrieving sessions: {}",
e
))),
)
}
}
}
struct Client<
S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static,
> {
client: crate::client::Client<S>,
w_sessions: Option<
tokio::sync::oneshot::Sender<Result<Vec<crate::protocol::Session>>>,
>,
}
impl<S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static>
Client<S>
{
fn new(
client: crate::client::Client<S>,
w_sessions: tokio::sync::oneshot::Sender<
Result<Vec<crate::protocol::Session>>,
>,
) -> Self {
Self {
client,
w_sessions: Some(w_sessions),
}
}
fn server_message(
&mut self,
msg: crate::protocol::Message,
) -> Option<Result<Vec<crate::protocol::Session>>> {
match msg {
crate::protocol::Message::Sessions { sessions } => {
Some(Ok(sessions))
}
crate::protocol::Message::Disconnected => {
Some(Err(Error::ServerDisconnected))
}
crate::protocol::Message::Error { msg } => {
Some(Err(Error::Server { message: msg }))
}
msg => Some(Err(crate::error::Error::UnexpectedMessage {
message: msg,
})),
}
}
}
impl<S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static>
Client<S>
{
const POLL_FNS:
&'static [&'static dyn for<'a> Fn(
&'a mut Self,
)
-> component_future::Poll<
(),
Error,
>] = &[&Self::poll_client];
fn poll_client(&mut self) -> component_future::Poll<(), Error> {
match component_future::try_ready!(self.client.poll()).unwrap() {
crate::client::Event::Disconnect => {
let res = Err(Error::ServerDisconnected);
self.w_sessions.take().unwrap().send(res).unwrap();
return Ok(component_future::Async::Ready(()));
}
crate::client::Event::Connect => {
self.client
.send_message(crate::protocol::Message::list_sessions());
}
crate::client::Event::ServerMessage(msg) => {
if let Some(res) = self.server_message(msg) {
self.w_sessions.take().unwrap().send(res).unwrap();
return Ok(component_future::Async::Ready(()));
}
}
}
Ok(component_future::Async::DidWork)
}
}
impl<S: tokio::io::AsyncRead + tokio::io::AsyncWrite + Send + 'static>
futures::Future for Client<S>
{
type Item = ();
type Error = Error;
fn poll(&mut self) -> futures::Poll<Self::Item, Self::Error> {
component_future::poll_future(self, Self::POLL_FNS)
}
}
|
