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/*
* SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
*
* SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
*/
use std::{sync::Arc, time::Instant};
use common::{auth::AccessToken, Server};
use futures_util::{SinkExt, StreamExt};
use hyper::upgrade::Upgraded;
use hyper_util::rt::TokioIo;
use jmap_proto::{
error::request::RequestError,
request::websocket::{
WebSocketMessage, WebSocketRequestError, WebSocketResponse, WebSocketStateChange,
},
types::type_state::DataType,
};
use tokio_tungstenite::WebSocketStream;
use trc::JmapEvent;
use tungstenite::Message;
use utils::map::bitmap::Bitmap;
use crate::{
api::{
http::{HttpSessionData, ToRequestError},
request::RequestHandler,
},
services::state::StateManager,
};
use std::future::Future;
pub trait WebSocketHandler: Sync + Send {
fn handle_websocket_stream(
&self,
stream: WebSocketStream<TokioIo<Upgraded>>,
access_token: Arc<AccessToken>,
session: HttpSessionData,
) -> impl Future<Output = ()> + Send;
}
impl WebSocketHandler for Server {
async fn handle_websocket_stream(
&self,
mut stream: WebSocketStream<TokioIo<Upgraded>>,
access_token: Arc<AccessToken>,
session: HttpSessionData,
) {
trc::event!(
Jmap(JmapEvent::WebsocketStart),
SpanId = session.session_id,
AccountId = access_token.primary_id(),
);
// Set timeouts
let throttle = self.core.jmap.web_socket_throttle;
let timeout = self.core.jmap.web_socket_timeout;
let heartbeat = self.core.jmap.web_socket_heartbeat;
let mut last_request = Instant::now();
let mut last_changes_sent = Instant::now() - throttle;
let mut last_heartbeat = Instant::now() - heartbeat;
let mut next_event = heartbeat;
// Register with state manager
let mut change_rx = match self
.subscribe_state_manager(access_token.primary_id(), Bitmap::all())
.await
{
Ok(change_rx) => change_rx,
Err(err) => {
trc::error!(err
.details("Failed to subscribe to state manager")
.span_id(session.session_id));
let _ = stream
.send(Message::Text(
WebSocketRequestError::from(RequestError::internal_server_error())
.to_json(),
))
.await;
return;
}
};
let mut changes = WebSocketStateChange::new(None);
let mut change_types: Bitmap<DataType> = Bitmap::new();
loop {
tokio::select! {
event = tokio::time::timeout(next_event, stream.next()) => {
match event {
Ok(Some(Ok(event))) => {
match event {
Message::Text(text) => {
let response = match WebSocketMessage::parse(
text.as_bytes(),
self.core.jmap.request_max_calls,
self.core.jmap.request_max_size,
) {
Ok(WebSocketMessage::Request(request)) => {
let response = self
.handle_request(
request.request,
access_token.clone(),
&session,
)
.await;
WebSocketResponse::from_response(response, request.id)
.to_json()
}
Ok(WebSocketMessage::PushEnable(push_enable)) => {
change_types = if !push_enable.data_types.is_empty() {
push_enable.data_types.into()
} else {
Bitmap::all()
};
continue;
}
Ok(WebSocketMessage::PushDisable) => {
change_types = Bitmap::new();
continue;
}
Err(err) => {
let response = WebSocketRequestError::from(err.to_request_error()).to_json();
trc::error!(err.details("Failed to parse WebSocket message").span_id(session.session_id));
response
},
};
if let Err(err) = stream.send(Message::Text(response)).await {
trc::event!(Jmap(JmapEvent::WebsocketError),
Details = "Failed to send text message",
SpanId = session.session_id,
Reason = err.to_string()
);
}
}
Message::Ping(bytes) => {
if let Err(err) = stream.send(Message::Pong(bytes)).await {
trc::event!(Jmap(JmapEvent::WebsocketError),
Details = "Failed to send pong message",
SpanId = session.session_id,
Reason = err.to_string()
);
}
}
Message::Close(frame) => {
let _ = stream.close(frame).await;
break;
}
_ => (),
}
last_request = Instant::now();
last_heartbeat = Instant::now();
}
Ok(Some(Err(err))) => {
trc::event!(Jmap(JmapEvent::WebsocketError),
Details = "Websocket error",
SpanId = session.session_id,
Reason = err.to_string()
);
break;
}
Ok(None) => break,
Err(_) => {
// Verify timeout
if last_request.elapsed() > timeout {
trc::event!(
Jmap(JmapEvent::WebsocketStop),
SpanId = session.session_id,
Reason = "Idle client"
);
break;
}
}
}
}
state_change = change_rx.recv() => {
if let Some(state_change) = state_change {
if !change_types.is_empty() && state_change
.types
.iter()
.any(|(t, _)| change_types.contains(*t))
{
for (type_state, change_id) in state_change.types {
changes
.changed
.get_mut_or_insert(state_change.account_id.into())
.set(type_state, change_id.into());
}
}
} else {
trc::event!(
Jmap(JmapEvent::WebsocketStop),
SpanId = session.session_id,
Reason = "State manager channel closed"
);
break;
}
}
}
if !changes.changed.is_empty() {
// Send any queued changes
let elapsed = last_changes_sent.elapsed();
if elapsed >= throttle {
if let Err(err) = stream.send(Message::Text(changes.to_json())).await {
trc::event!(
Jmap(JmapEvent::WebsocketError),
Details = "Failed to send state change message.",
SpanId = session.session_id,
Reason = err.to_string()
);
}
changes.changed.clear();
last_changes_sent = Instant::now();
last_heartbeat = Instant::now();
next_event = heartbeat;
} else {
next_event = throttle - elapsed;
}
} else if last_heartbeat.elapsed() > heartbeat {
if let Err(err) = stream.send(Message::Ping(vec![])).await {
trc::event!(
Jmap(JmapEvent::WebsocketError),
Details = "Failed to send ping message.",
SpanId = session.session_id,
Reason = err.to_string()
);
break;
}
last_heartbeat = Instant::now();
next_event = heartbeat;
}
}
}
}
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