1mod store;
2
3use crate::{
4 auth,
5 db::{self, ProjectId, RoomId, User, UserId},
6 AppState, Result,
7};
8use anyhow::anyhow;
9use async_tungstenite::tungstenite::{
10 protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
11};
12use axum::{
13 body::Body,
14 extract::{
15 ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
16 ConnectInfo, WebSocketUpgrade,
17 },
18 headers::{Header, HeaderName},
19 http::StatusCode,
20 middleware,
21 response::IntoResponse,
22 routing::get,
23 Extension, Router, TypedHeader,
24};
25use collections::{HashMap, HashSet};
26use futures::{
27 channel::oneshot,
28 future::{self, BoxFuture},
29 stream::FuturesUnordered,
30 FutureExt, SinkExt, StreamExt, TryStreamExt,
31};
32use lazy_static::lazy_static;
33use prometheus::{register_int_gauge, IntGauge};
34use rpc::{
35 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
36 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
37};
38use serde::{Serialize, Serializer};
39use std::{
40 any::TypeId,
41 future::Future,
42 marker::PhantomData,
43 net::SocketAddr,
44 ops::{Deref, DerefMut},
45 os::unix::prelude::OsStrExt,
46 rc::Rc,
47 sync::{
48 atomic::{AtomicBool, Ordering::SeqCst},
49 Arc,
50 },
51 time::Duration,
52};
53pub use store::{Store, Worktree};
54use tokio::{
55 sync::{Mutex, MutexGuard},
56 time::Sleep,
57};
58use tower::ServiceBuilder;
59use tracing::{info_span, instrument, Instrument};
60
61lazy_static! {
62 static ref METRIC_CONNECTIONS: IntGauge =
63 register_int_gauge!("connections", "number of connections").unwrap();
64 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
65 "shared_projects",
66 "number of open projects with one or more guests"
67 )
68 .unwrap();
69}
70
71type MessageHandler = Box<
72 dyn Send + Sync + Fn(Arc<Server>, UserId, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>,
73>;
74
75struct Message<T> {
76 sender_user_id: UserId,
77 sender_connection_id: ConnectionId,
78 payload: T,
79}
80
81struct Response<R> {
82 server: Arc<Server>,
83 receipt: Receipt<R>,
84 responded: Arc<AtomicBool>,
85}
86
87impl<R: RequestMessage> Response<R> {
88 fn send(self, payload: R::Response) -> Result<()> {
89 self.responded.store(true, SeqCst);
90 self.server.peer.respond(self.receipt, payload)?;
91 Ok(())
92 }
93}
94
95pub struct Server {
96 peer: Arc<Peer>,
97 pub(crate) store: Mutex<Store>,
98 app_state: Arc<AppState>,
99 handlers: HashMap<TypeId, MessageHandler>,
100}
101
102pub trait Executor: Send + Clone {
103 type Sleep: Send + Future;
104 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
105 fn sleep(&self, duration: Duration) -> Self::Sleep;
106}
107
108#[derive(Clone)]
109pub struct RealExecutor;
110
111pub(crate) struct StoreGuard<'a> {
112 guard: MutexGuard<'a, Store>,
113 _not_send: PhantomData<Rc<()>>,
114}
115
116#[derive(Serialize)]
117pub struct ServerSnapshot<'a> {
118 peer: &'a Peer,
119 #[serde(serialize_with = "serialize_deref")]
120 store: StoreGuard<'a>,
121}
122
123pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
124where
125 S: Serializer,
126 T: Deref<Target = U>,
127 U: Serialize,
128{
129 Serialize::serialize(value.deref(), serializer)
130}
131
132impl Server {
133 pub fn new(app_state: Arc<AppState>) -> Arc<Self> {
134 let mut server = Self {
135 peer: Peer::new(),
136 app_state,
137 store: Default::default(),
138 handlers: Default::default(),
139 };
140
141 server
142 .add_request_handler(Server::ping)
143 .add_request_handler(Server::create_room)
144 .add_request_handler(Server::join_room)
145 .add_message_handler(Server::leave_room)
146 .add_request_handler(Server::call)
147 .add_request_handler(Server::cancel_call)
148 .add_message_handler(Server::decline_call)
149 .add_request_handler(Server::update_participant_location)
150 .add_request_handler(Server::share_project)
151 .add_message_handler(Server::unshare_project)
152 .add_request_handler(Server::join_project)
153 .add_message_handler(Server::leave_project)
154 .add_message_handler(Server::update_project)
155 .add_request_handler(Server::update_worktree)
156 .add_message_handler(Server::start_language_server)
157 .add_message_handler(Server::update_language_server)
158 .add_message_handler(Server::update_diagnostic_summary)
159 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
160 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
161 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
162 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
163 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
164 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
165 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
166 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
167 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
168 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
169 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
170 .add_request_handler(
171 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
172 )
173 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
174 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
175 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
176 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
177 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
178 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
179 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
180 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
181 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
182 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
183 .add_message_handler(Server::create_buffer_for_peer)
184 .add_request_handler(Server::update_buffer)
185 .add_message_handler(Server::update_buffer_file)
186 .add_message_handler(Server::buffer_reloaded)
187 .add_message_handler(Server::buffer_saved)
188 .add_request_handler(Server::save_buffer)
189 .add_request_handler(Server::get_users)
190 .add_request_handler(Server::fuzzy_search_users)
191 .add_request_handler(Server::request_contact)
192 .add_request_handler(Server::remove_contact)
193 .add_request_handler(Server::respond_to_contact_request)
194 .add_request_handler(Server::follow)
195 .add_message_handler(Server::unfollow)
196 .add_message_handler(Server::update_followers)
197 .add_message_handler(Server::update_diff_base)
198 .add_request_handler(Server::get_private_user_info);
199
200 Arc::new(server)
201 }
202
203 fn add_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
204 where
205 F: 'static + Send + Sync + Fn(Arc<Self>, UserId, TypedEnvelope<M>) -> Fut,
206 Fut: 'static + Send + Future<Output = Result<()>>,
207 M: EnvelopedMessage,
208 {
209 let prev_handler = self.handlers.insert(
210 TypeId::of::<M>(),
211 Box::new(move |server, sender_user_id, envelope| {
212 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
213 let span = info_span!(
214 "handle message",
215 payload_type = envelope.payload_type_name()
216 );
217 span.in_scope(|| {
218 tracing::info!(
219 payload_type = envelope.payload_type_name(),
220 "message received"
221 );
222 });
223 let future = (handler)(server, sender_user_id, *envelope);
224 async move {
225 if let Err(error) = future.await {
226 tracing::error!(%error, "error handling message");
227 }
228 }
229 .instrument(span)
230 .boxed()
231 }),
232 );
233 if prev_handler.is_some() {
234 panic!("registered a handler for the same message twice");
235 }
236 self
237 }
238
239 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
240 where
241 F: 'static + Send + Sync + Fn(Arc<Self>, Message<M>) -> Fut,
242 Fut: 'static + Send + Future<Output = Result<()>>,
243 M: EnvelopedMessage,
244 {
245 self.add_handler(move |server, sender_user_id, envelope| {
246 handler(
247 server,
248 Message {
249 sender_user_id,
250 sender_connection_id: envelope.sender_id,
251 payload: envelope.payload,
252 },
253 )
254 });
255 self
256 }
257
258 /// Handle a request while holding a lock to the store. This is useful when we're registering
259 /// a connection but we want to respond on the connection before anybody else can send on it.
260 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
261 where
262 F: 'static + Send + Sync + Fn(Arc<Self>, Message<M>, Response<M>) -> Fut,
263 Fut: Send + Future<Output = Result<()>>,
264 M: RequestMessage,
265 {
266 let handler = Arc::new(handler);
267 self.add_handler(move |server, sender_user_id, envelope| {
268 let receipt = envelope.receipt();
269 let handler = handler.clone();
270 async move {
271 let request = Message {
272 sender_user_id,
273 sender_connection_id: envelope.sender_id,
274 payload: envelope.payload,
275 };
276 let responded = Arc::new(AtomicBool::default());
277 let response = Response {
278 server: server.clone(),
279 responded: responded.clone(),
280 receipt,
281 };
282 match (handler)(server.clone(), request, response).await {
283 Ok(()) => {
284 if responded.load(std::sync::atomic::Ordering::SeqCst) {
285 Ok(())
286 } else {
287 Err(anyhow!("handler did not send a response"))?
288 }
289 }
290 Err(error) => {
291 server.peer.respond_with_error(
292 receipt,
293 proto::Error {
294 message: error.to_string(),
295 },
296 )?;
297 Err(error)
298 }
299 }
300 }
301 })
302 }
303
304 pub fn handle_connection<E: Executor>(
305 self: &Arc<Self>,
306 connection: Connection,
307 address: String,
308 user: User,
309 mut send_connection_id: Option<oneshot::Sender<ConnectionId>>,
310 executor: E,
311 ) -> impl Future<Output = Result<()>> {
312 let mut this = self.clone();
313 let user_id = user.id;
314 let login = user.github_login;
315 let span = info_span!("handle connection", %user_id, %login, %address);
316 async move {
317 let (connection_id, handle_io, mut incoming_rx) = this
318 .peer
319 .add_connection(connection, {
320 let executor = executor.clone();
321 move |duration| {
322 let timer = executor.sleep(duration);
323 async move {
324 timer.await;
325 }
326 }
327 });
328
329 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
330 this.peer.send(connection_id, proto::Hello { peer_id: connection_id.0 })?;
331 tracing::info!(%user_id, %login, %connection_id, %address, "sent hello message");
332
333 if let Some(send_connection_id) = send_connection_id.take() {
334 let _ = send_connection_id.send(connection_id);
335 }
336
337 if !user.connected_once {
338 this.peer.send(connection_id, proto::ShowContacts {})?;
339 this.app_state.db.set_user_connected_once(user_id, true).await?;
340 }
341
342 let (contacts, invite_code) = future::try_join(
343 this.app_state.db.get_contacts(user_id),
344 this.app_state.db.get_invite_code_for_user(user_id)
345 ).await?;
346
347 {
348 let mut store = this.store().await;
349 store.add_connection(connection_id, user_id, user.admin);
350 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
351
352 if let Some((code, count)) = invite_code {
353 this.peer.send(connection_id, proto::UpdateInviteInfo {
354 url: format!("{}{}", this.app_state.config.invite_link_prefix, code),
355 count,
356 })?;
357 }
358 }
359
360 if let Some(incoming_call) = this.app_state.db.incoming_call_for_user(user_id).await? {
361 this.peer.send(connection_id, incoming_call)?;
362 }
363
364 this.update_user_contacts(user_id).await?;
365
366 let handle_io = handle_io.fuse();
367 futures::pin_mut!(handle_io);
368
369 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
370 // This prevents deadlocks when e.g., client A performs a request to client B and
371 // client B performs a request to client A. If both clients stop processing further
372 // messages until their respective request completes, they won't have a chance to
373 // respond to the other client's request and cause a deadlock.
374 //
375 // This arrangement ensures we will attempt to process earlier messages first, but fall
376 // back to processing messages arrived later in the spirit of making progress.
377 let mut foreground_message_handlers = FuturesUnordered::new();
378 loop {
379 let next_message = incoming_rx.next().fuse();
380 futures::pin_mut!(next_message);
381 futures::select_biased! {
382 result = handle_io => {
383 if let Err(error) = result {
384 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
385 }
386 break;
387 }
388 _ = foreground_message_handlers.next() => {}
389 message = next_message => {
390 if let Some(message) = message {
391 let type_name = message.payload_type_name();
392 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
393 let span_enter = span.enter();
394 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
395 let is_background = message.is_background();
396 let handle_message = (handler)(this.clone(), user_id, message);
397 drop(span_enter);
398
399 let handle_message = handle_message.instrument(span);
400 if is_background {
401 executor.spawn_detached(handle_message);
402 } else {
403 foreground_message_handlers.push(handle_message);
404 }
405 } else {
406 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
407 }
408 } else {
409 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
410 break;
411 }
412 }
413 }
414 }
415
416 drop(foreground_message_handlers);
417 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
418 if let Err(error) = this.sign_out(connection_id).await {
419 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
420 }
421
422 Ok(())
423 }.instrument(span)
424 }
425
426 #[instrument(skip(self), err)]
427 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
428 self.peer.disconnect(connection_id);
429
430 let mut projects_to_unshare = Vec::new();
431 let mut contacts_to_update = HashSet::default();
432 let mut room_left = None;
433 {
434 let mut store = self.store().await;
435
436 #[cfg(test)]
437 let removed_connection = store.remove_connection(connection_id).unwrap();
438 #[cfg(not(test))]
439 let removed_connection = store.remove_connection(connection_id)?;
440
441 for project in removed_connection.hosted_projects {
442 projects_to_unshare.push(project.id);
443 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
444 self.peer.send(
445 conn_id,
446 proto::UnshareProject {
447 project_id: project.id.to_proto(),
448 },
449 )
450 });
451 }
452
453 for project in removed_connection.guest_projects {
454 broadcast(connection_id, project.connection_ids, |conn_id| {
455 self.peer.send(
456 conn_id,
457 proto::RemoveProjectCollaborator {
458 project_id: project.id.to_proto(),
459 peer_id: connection_id.0,
460 },
461 )
462 });
463 }
464
465 if let Some(room) = removed_connection.room {
466 self.room_updated(&room);
467 room_left = Some(self.room_left(&room, connection_id));
468 }
469
470 contacts_to_update.insert(removed_connection.user_id);
471 for connection_id in removed_connection.canceled_call_connection_ids {
472 self.peer
473 .send(connection_id, proto::CallCanceled {})
474 .trace_err();
475 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
476 }
477 };
478
479 if let Some(room_left) = room_left {
480 room_left.await.trace_err();
481 }
482
483 for user_id in contacts_to_update {
484 self.update_user_contacts(user_id).await.trace_err();
485 }
486
487 for project_id in projects_to_unshare {
488 self.app_state
489 .db
490 .unshare_project(project_id)
491 .await
492 .trace_err();
493 }
494
495 Ok(())
496 }
497
498 pub async fn invite_code_redeemed(
499 self: &Arc<Self>,
500 inviter_id: UserId,
501 invitee_id: UserId,
502 ) -> Result<()> {
503 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
504 if let Some(code) = &user.invite_code {
505 let store = self.store().await;
506 let invitee_contact = store.contact_for_user(invitee_id, true);
507 for connection_id in store.connection_ids_for_user(inviter_id) {
508 self.peer.send(
509 connection_id,
510 proto::UpdateContacts {
511 contacts: vec![invitee_contact.clone()],
512 ..Default::default()
513 },
514 )?;
515 self.peer.send(
516 connection_id,
517 proto::UpdateInviteInfo {
518 url: format!("{}{}", self.app_state.config.invite_link_prefix, &code),
519 count: user.invite_count as u32,
520 },
521 )?;
522 }
523 }
524 }
525 Ok(())
526 }
527
528 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
529 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
530 if let Some(invite_code) = &user.invite_code {
531 let store = self.store().await;
532 for connection_id in store.connection_ids_for_user(user_id) {
533 self.peer.send(
534 connection_id,
535 proto::UpdateInviteInfo {
536 url: format!(
537 "{}{}",
538 self.app_state.config.invite_link_prefix, invite_code
539 ),
540 count: user.invite_count as u32,
541 },
542 )?;
543 }
544 }
545 }
546 Ok(())
547 }
548
549 async fn ping(
550 self: Arc<Server>,
551 _: Message<proto::Ping>,
552 response: Response<proto::Ping>,
553 ) -> Result<()> {
554 response.send(proto::Ack {})?;
555 Ok(())
556 }
557
558 async fn create_room(
559 self: Arc<Server>,
560 request: Message<proto::CreateRoom>,
561 response: Response<proto::CreateRoom>,
562 ) -> Result<()> {
563 let room = self
564 .app_state
565 .db
566 .create_room(request.sender_user_id, request.sender_connection_id)
567 .await?;
568
569 let live_kit_connection_info =
570 if let Some(live_kit) = self.app_state.live_kit_client.as_ref() {
571 if let Some(_) = live_kit
572 .create_room(room.live_kit_room.clone())
573 .await
574 .trace_err()
575 {
576 if let Some(token) = live_kit
577 .room_token(
578 &room.live_kit_room,
579 &request.sender_connection_id.to_string(),
580 )
581 .trace_err()
582 {
583 Some(proto::LiveKitConnectionInfo {
584 server_url: live_kit.url().into(),
585 token,
586 })
587 } else {
588 None
589 }
590 } else {
591 None
592 }
593 } else {
594 None
595 };
596
597 response.send(proto::CreateRoomResponse {
598 room: Some(room),
599 live_kit_connection_info,
600 })?;
601 self.update_user_contacts(request.sender_user_id).await?;
602 Ok(())
603 }
604
605 async fn join_room(
606 self: Arc<Server>,
607 request: Message<proto::JoinRoom>,
608 response: Response<proto::JoinRoom>,
609 ) -> Result<()> {
610 let room = self
611 .app_state
612 .db
613 .join_room(
614 RoomId::from_proto(request.payload.id),
615 request.sender_user_id,
616 request.sender_connection_id,
617 )
618 .await?;
619 for recipient_id in self
620 .store()
621 .await
622 .connection_ids_for_user(request.sender_user_id)
623 {
624 self.peer
625 .send(recipient_id, proto::CallCanceled {})
626 .trace_err();
627 }
628
629 let live_kit_connection_info =
630 if let Some(live_kit) = self.app_state.live_kit_client.as_ref() {
631 if let Some(token) = live_kit
632 .room_token(
633 &room.live_kit_room,
634 &request.sender_connection_id.to_string(),
635 )
636 .trace_err()
637 {
638 Some(proto::LiveKitConnectionInfo {
639 server_url: live_kit.url().into(),
640 token,
641 })
642 } else {
643 None
644 }
645 } else {
646 None
647 };
648
649 self.room_updated(&room);
650 response.send(proto::JoinRoomResponse {
651 room: Some(room),
652 live_kit_connection_info,
653 })?;
654
655 self.update_user_contacts(request.sender_user_id).await?;
656 Ok(())
657 }
658
659 async fn leave_room(self: Arc<Server>, message: Message<proto::LeaveRoom>) -> Result<()> {
660 let mut contacts_to_update = HashSet::default();
661
662 let left_room = self
663 .app_state
664 .db
665 .leave_room(
666 RoomId::from_proto(message.payload.id),
667 message.sender_connection_id,
668 )
669 .await?;
670 contacts_to_update.insert(message.sender_user_id);
671
672 for project in left_room.left_projects.into_values() {
673 if project.host_user_id == message.sender_user_id {
674 for connection_id in project.connection_ids {
675 self.peer.send(
676 connection_id,
677 proto::UnshareProject {
678 project_id: project.id.to_proto(),
679 },
680 )?;
681 }
682 } else {
683 for connection_id in project.connection_ids {
684 self.peer.send(
685 connection_id,
686 proto::RemoveProjectCollaborator {
687 project_id: project.id.to_proto(),
688 peer_id: message.sender_connection_id.0,
689 },
690 )?;
691 }
692
693 self.peer.send(
694 message.sender_connection_id,
695 proto::UnshareProject {
696 project_id: project.id.to_proto(),
697 },
698 )?;
699 }
700 }
701
702 self.room_updated(&left_room.room);
703 {
704 let store = self.store().await;
705 for user_id in left_room.canceled_calls_to_user_ids {
706 for connection_id in store.connection_ids_for_user(user_id) {
707 self.peer
708 .send(connection_id, proto::CallCanceled {})
709 .trace_err();
710 }
711 contacts_to_update.insert(user_id);
712 }
713 }
714
715 self.room_left(&left_room.room, message.sender_connection_id)
716 .await
717 .trace_err();
718 for user_id in contacts_to_update {
719 self.update_user_contacts(user_id).await?;
720 }
721
722 Ok(())
723 }
724
725 async fn call(
726 self: Arc<Server>,
727 request: Message<proto::Call>,
728 response: Response<proto::Call>,
729 ) -> Result<()> {
730 let room_id = RoomId::from_proto(request.payload.room_id);
731 let calling_user_id = request.sender_user_id;
732 let called_user_id = UserId::from_proto(request.payload.called_user_id);
733 let initial_project_id = request
734 .payload
735 .initial_project_id
736 .map(ProjectId::from_proto);
737 if !self
738 .app_state
739 .db
740 .has_contact(calling_user_id, called_user_id)
741 .await?
742 {
743 return Err(anyhow!("cannot call a user who isn't a contact"))?;
744 }
745
746 let (room, incoming_call) = self
747 .app_state
748 .db
749 .call(room_id, calling_user_id, called_user_id, initial_project_id)
750 .await?;
751 self.room_updated(&room);
752 self.update_user_contacts(called_user_id).await?;
753
754 let mut calls = self
755 .store()
756 .await
757 .connection_ids_for_user(called_user_id)
758 .map(|connection_id| self.peer.request(connection_id, incoming_call.clone()))
759 .collect::<FuturesUnordered<_>>();
760
761 while let Some(call_response) = calls.next().await {
762 match call_response.as_ref() {
763 Ok(_) => {
764 response.send(proto::Ack {})?;
765 return Ok(());
766 }
767 Err(_) => {
768 call_response.trace_err();
769 }
770 }
771 }
772
773 let room = self
774 .app_state
775 .db
776 .call_failed(room_id, called_user_id)
777 .await?;
778 self.room_updated(&room);
779 self.update_user_contacts(called_user_id).await?;
780
781 Err(anyhow!("failed to ring call recipient"))?
782 }
783
784 async fn cancel_call(
785 self: Arc<Server>,
786 request: Message<proto::CancelCall>,
787 response: Response<proto::CancelCall>,
788 ) -> Result<()> {
789 let recipient_user_id = UserId::from_proto(request.payload.called_user_id);
790 {
791 let mut store = self.store().await;
792 let (room, recipient_connection_ids) = store.cancel_call(
793 request.payload.room_id,
794 recipient_user_id,
795 request.sender_connection_id,
796 )?;
797 for recipient_id in recipient_connection_ids {
798 self.peer
799 .send(recipient_id, proto::CallCanceled {})
800 .trace_err();
801 }
802 self.room_updated(room);
803 response.send(proto::Ack {})?;
804 }
805 self.update_user_contacts(recipient_user_id).await?;
806 Ok(())
807 }
808
809 async fn decline_call(self: Arc<Server>, message: Message<proto::DeclineCall>) -> Result<()> {
810 let room = self
811 .app_state
812 .db
813 .decline_call(
814 RoomId::from_proto(message.payload.room_id),
815 message.sender_user_id,
816 )
817 .await?;
818 for recipient_id in self
819 .store()
820 .await
821 .connection_ids_for_user(message.sender_user_id)
822 {
823 self.peer
824 .send(recipient_id, proto::CallCanceled {})
825 .trace_err();
826 }
827 self.room_updated(&room);
828 self.update_user_contacts(message.sender_user_id).await?;
829 Ok(())
830 }
831
832 async fn update_participant_location(
833 self: Arc<Server>,
834 request: Message<proto::UpdateParticipantLocation>,
835 response: Response<proto::UpdateParticipantLocation>,
836 ) -> Result<()> {
837 let room_id = RoomId::from_proto(request.payload.room_id);
838 let location = request
839 .payload
840 .location
841 .ok_or_else(|| anyhow!("invalid location"))?;
842 let room = self
843 .app_state
844 .db
845 .update_room_participant_location(room_id, request.sender_user_id, location)
846 .await?;
847 self.room_updated(&room);
848 response.send(proto::Ack {})?;
849 Ok(())
850 }
851
852 fn room_updated(&self, room: &proto::Room) {
853 for participant in &room.participants {
854 self.peer
855 .send(
856 ConnectionId(participant.peer_id),
857 proto::RoomUpdated {
858 room: Some(room.clone()),
859 },
860 )
861 .trace_err();
862 }
863 }
864
865 fn room_left(
866 &self,
867 room: &proto::Room,
868 connection_id: ConnectionId,
869 ) -> impl Future<Output = Result<()>> {
870 let client = self.app_state.live_kit_client.clone();
871 let room_name = room.live_kit_room.clone();
872 let participant_count = room.participants.len();
873 async move {
874 if let Some(client) = client {
875 client
876 .remove_participant(room_name.clone(), connection_id.to_string())
877 .await?;
878
879 if participant_count == 0 {
880 client.delete_room(room_name).await?;
881 }
882 }
883
884 Ok(())
885 }
886 }
887
888 async fn share_project(
889 self: Arc<Server>,
890 request: Message<proto::ShareProject>,
891 response: Response<proto::ShareProject>,
892 ) -> Result<()> {
893 let (project_id, room) = self
894 .app_state
895 .db
896 .share_project(
897 request.sender_user_id,
898 request.sender_connection_id,
899 RoomId::from_proto(request.payload.room_id),
900 &request.payload.worktrees,
901 )
902 .await?;
903 response.send(proto::ShareProjectResponse {
904 project_id: project_id.to_proto(),
905 })?;
906 self.room_updated(&room);
907
908 Ok(())
909 }
910
911 async fn unshare_project(
912 self: Arc<Server>,
913 message: Message<proto::UnshareProject>,
914 ) -> Result<()> {
915 let project_id = ProjectId::from_proto(message.payload.project_id);
916 let mut store = self.store().await;
917 let (room, project) = store.unshare_project(project_id, message.sender_connection_id)?;
918 broadcast(
919 message.sender_connection_id,
920 project.guest_connection_ids(),
921 |conn_id| self.peer.send(conn_id, message.payload.clone()),
922 );
923 self.room_updated(room);
924
925 Ok(())
926 }
927
928 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
929 let contacts = self.app_state.db.get_contacts(user_id).await?;
930 let store = self.store().await;
931 let updated_contact = store.contact_for_user(user_id, false);
932 for contact in contacts {
933 if let db::Contact::Accepted {
934 user_id: contact_user_id,
935 ..
936 } = contact
937 {
938 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
939 self.peer
940 .send(
941 contact_conn_id,
942 proto::UpdateContacts {
943 contacts: vec![updated_contact.clone()],
944 remove_contacts: Default::default(),
945 incoming_requests: Default::default(),
946 remove_incoming_requests: Default::default(),
947 outgoing_requests: Default::default(),
948 remove_outgoing_requests: Default::default(),
949 },
950 )
951 .trace_err();
952 }
953 }
954 }
955 Ok(())
956 }
957
958 async fn join_project(
959 self: Arc<Server>,
960 request: Message<proto::JoinProject>,
961 response: Response<proto::JoinProject>,
962 ) -> Result<()> {
963 let project_id = ProjectId::from_proto(request.payload.project_id);
964 let guest_user_id = request.sender_user_id;
965 let host_user_id;
966 let host_connection_id;
967 {
968 let state = self.store().await;
969 let project = state.project(project_id)?;
970 host_user_id = project.host.user_id;
971 host_connection_id = project.host_connection_id;
972 };
973
974 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
975
976 let mut store = self.store().await;
977 let (project, replica_id) = store.join_project(request.sender_connection_id, project_id)?;
978 let peer_count = project.guests.len();
979 let mut collaborators = Vec::with_capacity(peer_count);
980 collaborators.push(proto::Collaborator {
981 peer_id: project.host_connection_id.0,
982 replica_id: 0,
983 user_id: project.host.user_id.to_proto(),
984 });
985 let worktrees = project
986 .worktrees
987 .iter()
988 .map(|(id, worktree)| proto::WorktreeMetadata {
989 id: *id,
990 root_name: worktree.root_name.clone(),
991 visible: worktree.visible,
992 abs_path: worktree.abs_path.as_os_str().as_bytes().to_vec(),
993 })
994 .collect::<Vec<_>>();
995
996 // Add all guests other than the requesting user's own connections as collaborators
997 for (guest_conn_id, guest) in &project.guests {
998 if request.sender_connection_id != *guest_conn_id {
999 collaborators.push(proto::Collaborator {
1000 peer_id: guest_conn_id.0,
1001 replica_id: guest.replica_id as u32,
1002 user_id: guest.user_id.to_proto(),
1003 });
1004 }
1005 }
1006
1007 for conn_id in project.connection_ids() {
1008 if conn_id != request.sender_connection_id {
1009 self.peer
1010 .send(
1011 conn_id,
1012 proto::AddProjectCollaborator {
1013 project_id: project_id.to_proto(),
1014 collaborator: Some(proto::Collaborator {
1015 peer_id: request.sender_connection_id.0,
1016 replica_id: replica_id as u32,
1017 user_id: guest_user_id.to_proto(),
1018 }),
1019 },
1020 )
1021 .trace_err();
1022 }
1023 }
1024
1025 // First, we send the metadata associated with each worktree.
1026 response.send(proto::JoinProjectResponse {
1027 worktrees: worktrees.clone(),
1028 replica_id: replica_id as u32,
1029 collaborators: collaborators.clone(),
1030 language_servers: project.language_servers.clone(),
1031 })?;
1032
1033 for (worktree_id, worktree) in &project.worktrees {
1034 #[cfg(any(test, feature = "test-support"))]
1035 const MAX_CHUNK_SIZE: usize = 2;
1036 #[cfg(not(any(test, feature = "test-support")))]
1037 const MAX_CHUNK_SIZE: usize = 256;
1038
1039 // Stream this worktree's entries.
1040 let message = proto::UpdateWorktree {
1041 project_id: project_id.to_proto(),
1042 worktree_id: *worktree_id,
1043 abs_path: worktree.abs_path.as_os_str().as_bytes().to_vec(),
1044 root_name: worktree.root_name.clone(),
1045 updated_entries: worktree.entries.values().cloned().collect(),
1046 removed_entries: Default::default(),
1047 scan_id: worktree.scan_id,
1048 is_last_update: worktree.is_complete,
1049 };
1050 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1051 self.peer
1052 .send(request.sender_connection_id, update.clone())?;
1053 }
1054
1055 // Stream this worktree's diagnostics.
1056 for summary in worktree.diagnostic_summaries.values() {
1057 self.peer.send(
1058 request.sender_connection_id,
1059 proto::UpdateDiagnosticSummary {
1060 project_id: project_id.to_proto(),
1061 worktree_id: *worktree_id,
1062 summary: Some(summary.clone()),
1063 },
1064 )?;
1065 }
1066 }
1067
1068 for language_server in &project.language_servers {
1069 self.peer.send(
1070 request.sender_connection_id,
1071 proto::UpdateLanguageServer {
1072 project_id: project_id.to_proto(),
1073 language_server_id: language_server.id,
1074 variant: Some(
1075 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1076 proto::LspDiskBasedDiagnosticsUpdated {},
1077 ),
1078 ),
1079 },
1080 )?;
1081 }
1082
1083 Ok(())
1084 }
1085
1086 async fn leave_project(self: Arc<Server>, request: Message<proto::LeaveProject>) -> Result<()> {
1087 let sender_id = request.sender_connection_id;
1088 let project_id = ProjectId::from_proto(request.payload.project_id);
1089 let project;
1090 {
1091 let mut store = self.store().await;
1092 project = store.leave_project(project_id, sender_id)?;
1093 tracing::info!(
1094 %project_id,
1095 host_user_id = %project.host_user_id,
1096 host_connection_id = %project.host_connection_id,
1097 "leave project"
1098 );
1099
1100 if project.remove_collaborator {
1101 broadcast(sender_id, project.connection_ids, |conn_id| {
1102 self.peer.send(
1103 conn_id,
1104 proto::RemoveProjectCollaborator {
1105 project_id: project_id.to_proto(),
1106 peer_id: sender_id.0,
1107 },
1108 )
1109 });
1110 }
1111 }
1112
1113 Ok(())
1114 }
1115
1116 async fn update_project(
1117 self: Arc<Server>,
1118 request: Message<proto::UpdateProject>,
1119 ) -> Result<()> {
1120 let project_id = ProjectId::from_proto(request.payload.project_id);
1121 {
1122 let mut state = self.store().await;
1123 let guest_connection_ids = state
1124 .read_project(project_id, request.sender_connection_id)?
1125 .guest_connection_ids();
1126 let room = state.update_project(
1127 project_id,
1128 &request.payload.worktrees,
1129 request.sender_connection_id,
1130 )?;
1131 broadcast(
1132 request.sender_connection_id,
1133 guest_connection_ids,
1134 |connection_id| {
1135 self.peer.forward_send(
1136 request.sender_connection_id,
1137 connection_id,
1138 request.payload.clone(),
1139 )
1140 },
1141 );
1142 self.room_updated(room);
1143 };
1144
1145 Ok(())
1146 }
1147
1148 async fn update_worktree(
1149 self: Arc<Server>,
1150 request: Message<proto::UpdateWorktree>,
1151 response: Response<proto::UpdateWorktree>,
1152 ) -> Result<()> {
1153 let project_id = ProjectId::from_proto(request.payload.project_id);
1154 let worktree_id = request.payload.worktree_id;
1155 let connection_ids = self.store().await.update_worktree(
1156 request.sender_connection_id,
1157 project_id,
1158 worktree_id,
1159 &request.payload.root_name,
1160 &request.payload.removed_entries,
1161 &request.payload.updated_entries,
1162 request.payload.scan_id,
1163 request.payload.is_last_update,
1164 )?;
1165
1166 broadcast(
1167 request.sender_connection_id,
1168 connection_ids,
1169 |connection_id| {
1170 self.peer.forward_send(
1171 request.sender_connection_id,
1172 connection_id,
1173 request.payload.clone(),
1174 )
1175 },
1176 );
1177 response.send(proto::Ack {})?;
1178 Ok(())
1179 }
1180
1181 async fn update_diagnostic_summary(
1182 self: Arc<Server>,
1183 request: Message<proto::UpdateDiagnosticSummary>,
1184 ) -> Result<()> {
1185 let summary = request
1186 .payload
1187 .summary
1188 .clone()
1189 .ok_or_else(|| anyhow!("invalid summary"))?;
1190 let receiver_ids = self.store().await.update_diagnostic_summary(
1191 ProjectId::from_proto(request.payload.project_id),
1192 request.payload.worktree_id,
1193 request.sender_connection_id,
1194 summary,
1195 )?;
1196
1197 broadcast(
1198 request.sender_connection_id,
1199 receiver_ids,
1200 |connection_id| {
1201 self.peer.forward_send(
1202 request.sender_connection_id,
1203 connection_id,
1204 request.payload.clone(),
1205 )
1206 },
1207 );
1208 Ok(())
1209 }
1210
1211 async fn start_language_server(
1212 self: Arc<Server>,
1213 request: Message<proto::StartLanguageServer>,
1214 ) -> Result<()> {
1215 let receiver_ids = self.store().await.start_language_server(
1216 ProjectId::from_proto(request.payload.project_id),
1217 request.sender_connection_id,
1218 request
1219 .payload
1220 .server
1221 .clone()
1222 .ok_or_else(|| anyhow!("invalid language server"))?,
1223 )?;
1224 broadcast(
1225 request.sender_connection_id,
1226 receiver_ids,
1227 |connection_id| {
1228 self.peer.forward_send(
1229 request.sender_connection_id,
1230 connection_id,
1231 request.payload.clone(),
1232 )
1233 },
1234 );
1235 Ok(())
1236 }
1237
1238 async fn update_language_server(
1239 self: Arc<Server>,
1240 request: Message<proto::UpdateLanguageServer>,
1241 ) -> Result<()> {
1242 let receiver_ids = self.store().await.project_connection_ids(
1243 ProjectId::from_proto(request.payload.project_id),
1244 request.sender_connection_id,
1245 )?;
1246 broadcast(
1247 request.sender_connection_id,
1248 receiver_ids,
1249 |connection_id| {
1250 self.peer.forward_send(
1251 request.sender_connection_id,
1252 connection_id,
1253 request.payload.clone(),
1254 )
1255 },
1256 );
1257 Ok(())
1258 }
1259
1260 async fn forward_project_request<T>(
1261 self: Arc<Server>,
1262 request: Message<T>,
1263 response: Response<T>,
1264 ) -> Result<()>
1265 where
1266 T: EntityMessage + RequestMessage,
1267 {
1268 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1269 let host_connection_id = self
1270 .store()
1271 .await
1272 .read_project(project_id, request.sender_connection_id)?
1273 .host_connection_id;
1274 let payload = self
1275 .peer
1276 .forward_request(
1277 request.sender_connection_id,
1278 host_connection_id,
1279 request.payload,
1280 )
1281 .await?;
1282
1283 // Ensure project still exists by the time we get the response from the host.
1284 self.store()
1285 .await
1286 .read_project(project_id, request.sender_connection_id)?;
1287
1288 response.send(payload)?;
1289 Ok(())
1290 }
1291
1292 async fn save_buffer(
1293 self: Arc<Server>,
1294 request: Message<proto::SaveBuffer>,
1295 response: Response<proto::SaveBuffer>,
1296 ) -> Result<()> {
1297 let project_id = ProjectId::from_proto(request.payload.project_id);
1298 let host = self
1299 .store()
1300 .await
1301 .read_project(project_id, request.sender_connection_id)?
1302 .host_connection_id;
1303 let response_payload = self
1304 .peer
1305 .forward_request(request.sender_connection_id, host, request.payload.clone())
1306 .await?;
1307
1308 let mut guests = self
1309 .store()
1310 .await
1311 .read_project(project_id, request.sender_connection_id)?
1312 .connection_ids();
1313 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_connection_id);
1314 broadcast(host, guests, |conn_id| {
1315 self.peer
1316 .forward_send(host, conn_id, response_payload.clone())
1317 });
1318 response.send(response_payload)?;
1319 Ok(())
1320 }
1321
1322 async fn create_buffer_for_peer(
1323 self: Arc<Server>,
1324 request: Message<proto::CreateBufferForPeer>,
1325 ) -> Result<()> {
1326 self.peer.forward_send(
1327 request.sender_connection_id,
1328 ConnectionId(request.payload.peer_id),
1329 request.payload,
1330 )?;
1331 Ok(())
1332 }
1333
1334 async fn update_buffer(
1335 self: Arc<Server>,
1336 request: Message<proto::UpdateBuffer>,
1337 response: Response<proto::UpdateBuffer>,
1338 ) -> Result<()> {
1339 let project_id = ProjectId::from_proto(request.payload.project_id);
1340 let receiver_ids = {
1341 let store = self.store().await;
1342 store.project_connection_ids(project_id, request.sender_connection_id)?
1343 };
1344
1345 broadcast(
1346 request.sender_connection_id,
1347 receiver_ids,
1348 |connection_id| {
1349 self.peer.forward_send(
1350 request.sender_connection_id,
1351 connection_id,
1352 request.payload.clone(),
1353 )
1354 },
1355 );
1356 response.send(proto::Ack {})?;
1357 Ok(())
1358 }
1359
1360 async fn update_buffer_file(
1361 self: Arc<Server>,
1362 request: Message<proto::UpdateBufferFile>,
1363 ) -> Result<()> {
1364 let receiver_ids = self.store().await.project_connection_ids(
1365 ProjectId::from_proto(request.payload.project_id),
1366 request.sender_connection_id,
1367 )?;
1368 broadcast(
1369 request.sender_connection_id,
1370 receiver_ids,
1371 |connection_id| {
1372 self.peer.forward_send(
1373 request.sender_connection_id,
1374 connection_id,
1375 request.payload.clone(),
1376 )
1377 },
1378 );
1379 Ok(())
1380 }
1381
1382 async fn buffer_reloaded(
1383 self: Arc<Server>,
1384 request: Message<proto::BufferReloaded>,
1385 ) -> Result<()> {
1386 let receiver_ids = self.store().await.project_connection_ids(
1387 ProjectId::from_proto(request.payload.project_id),
1388 request.sender_connection_id,
1389 )?;
1390 broadcast(
1391 request.sender_connection_id,
1392 receiver_ids,
1393 |connection_id| {
1394 self.peer.forward_send(
1395 request.sender_connection_id,
1396 connection_id,
1397 request.payload.clone(),
1398 )
1399 },
1400 );
1401 Ok(())
1402 }
1403
1404 async fn buffer_saved(self: Arc<Server>, request: Message<proto::BufferSaved>) -> Result<()> {
1405 let receiver_ids = self.store().await.project_connection_ids(
1406 ProjectId::from_proto(request.payload.project_id),
1407 request.sender_connection_id,
1408 )?;
1409 broadcast(
1410 request.sender_connection_id,
1411 receiver_ids,
1412 |connection_id| {
1413 self.peer.forward_send(
1414 request.sender_connection_id,
1415 connection_id,
1416 request.payload.clone(),
1417 )
1418 },
1419 );
1420 Ok(())
1421 }
1422
1423 async fn follow(
1424 self: Arc<Self>,
1425 request: Message<proto::Follow>,
1426 response: Response<proto::Follow>,
1427 ) -> Result<()> {
1428 let project_id = ProjectId::from_proto(request.payload.project_id);
1429 let leader_id = ConnectionId(request.payload.leader_id);
1430 let follower_id = request.sender_connection_id;
1431 {
1432 let store = self.store().await;
1433 if !store
1434 .project_connection_ids(project_id, follower_id)?
1435 .contains(&leader_id)
1436 {
1437 Err(anyhow!("no such peer"))?;
1438 }
1439 }
1440
1441 let mut response_payload = self
1442 .peer
1443 .forward_request(request.sender_connection_id, leader_id, request.payload)
1444 .await?;
1445 response_payload
1446 .views
1447 .retain(|view| view.leader_id != Some(follower_id.0));
1448 response.send(response_payload)?;
1449 Ok(())
1450 }
1451
1452 async fn unfollow(self: Arc<Self>, request: Message<proto::Unfollow>) -> Result<()> {
1453 let project_id = ProjectId::from_proto(request.payload.project_id);
1454 let leader_id = ConnectionId(request.payload.leader_id);
1455 let store = self.store().await;
1456 if !store
1457 .project_connection_ids(project_id, request.sender_connection_id)?
1458 .contains(&leader_id)
1459 {
1460 Err(anyhow!("no such peer"))?;
1461 }
1462 self.peer
1463 .forward_send(request.sender_connection_id, leader_id, request.payload)?;
1464 Ok(())
1465 }
1466
1467 async fn update_followers(
1468 self: Arc<Self>,
1469 request: Message<proto::UpdateFollowers>,
1470 ) -> Result<()> {
1471 let project_id = ProjectId::from_proto(request.payload.project_id);
1472 let store = self.store().await;
1473 let connection_ids =
1474 store.project_connection_ids(project_id, request.sender_connection_id)?;
1475 let leader_id = request
1476 .payload
1477 .variant
1478 .as_ref()
1479 .and_then(|variant| match variant {
1480 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1481 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1482 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1483 });
1484 for follower_id in &request.payload.follower_ids {
1485 let follower_id = ConnectionId(*follower_id);
1486 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1487 self.peer.forward_send(
1488 request.sender_connection_id,
1489 follower_id,
1490 request.payload.clone(),
1491 )?;
1492 }
1493 }
1494 Ok(())
1495 }
1496
1497 async fn get_users(
1498 self: Arc<Server>,
1499 request: Message<proto::GetUsers>,
1500 response: Response<proto::GetUsers>,
1501 ) -> Result<()> {
1502 let user_ids = request
1503 .payload
1504 .user_ids
1505 .into_iter()
1506 .map(UserId::from_proto)
1507 .collect();
1508 let users = self
1509 .app_state
1510 .db
1511 .get_users_by_ids(user_ids)
1512 .await?
1513 .into_iter()
1514 .map(|user| proto::User {
1515 id: user.id.to_proto(),
1516 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1517 github_login: user.github_login,
1518 })
1519 .collect();
1520 response.send(proto::UsersResponse { users })?;
1521 Ok(())
1522 }
1523
1524 async fn fuzzy_search_users(
1525 self: Arc<Server>,
1526 request: Message<proto::FuzzySearchUsers>,
1527 response: Response<proto::FuzzySearchUsers>,
1528 ) -> Result<()> {
1529 let query = request.payload.query;
1530 let db = &self.app_state.db;
1531 let users = match query.len() {
1532 0 => vec![],
1533 1 | 2 => db
1534 .get_user_by_github_account(&query, None)
1535 .await?
1536 .into_iter()
1537 .collect(),
1538 _ => db.fuzzy_search_users(&query, 10).await?,
1539 };
1540 let users = users
1541 .into_iter()
1542 .filter(|user| user.id != request.sender_user_id)
1543 .map(|user| proto::User {
1544 id: user.id.to_proto(),
1545 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1546 github_login: user.github_login,
1547 })
1548 .collect();
1549 response.send(proto::UsersResponse { users })?;
1550 Ok(())
1551 }
1552
1553 async fn request_contact(
1554 self: Arc<Server>,
1555 request: Message<proto::RequestContact>,
1556 response: Response<proto::RequestContact>,
1557 ) -> Result<()> {
1558 let requester_id = request.sender_user_id;
1559 let responder_id = UserId::from_proto(request.payload.responder_id);
1560 if requester_id == responder_id {
1561 return Err(anyhow!("cannot add yourself as a contact"))?;
1562 }
1563
1564 self.app_state
1565 .db
1566 .send_contact_request(requester_id, responder_id)
1567 .await?;
1568
1569 // Update outgoing contact requests of requester
1570 let mut update = proto::UpdateContacts::default();
1571 update.outgoing_requests.push(responder_id.to_proto());
1572 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1573 self.peer.send(connection_id, update.clone())?;
1574 }
1575
1576 // Update incoming contact requests of responder
1577 let mut update = proto::UpdateContacts::default();
1578 update
1579 .incoming_requests
1580 .push(proto::IncomingContactRequest {
1581 requester_id: requester_id.to_proto(),
1582 should_notify: true,
1583 });
1584 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1585 self.peer.send(connection_id, update.clone())?;
1586 }
1587
1588 response.send(proto::Ack {})?;
1589 Ok(())
1590 }
1591
1592 async fn respond_to_contact_request(
1593 self: Arc<Server>,
1594 request: Message<proto::RespondToContactRequest>,
1595 response: Response<proto::RespondToContactRequest>,
1596 ) -> Result<()> {
1597 let responder_id = request.sender_user_id;
1598 let requester_id = UserId::from_proto(request.payload.requester_id);
1599 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1600 self.app_state
1601 .db
1602 .dismiss_contact_notification(responder_id, requester_id)
1603 .await?;
1604 } else {
1605 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1606 self.app_state
1607 .db
1608 .respond_to_contact_request(responder_id, requester_id, accept)
1609 .await?;
1610
1611 let store = self.store().await;
1612 // Update responder with new contact
1613 let mut update = proto::UpdateContacts::default();
1614 if accept {
1615 update
1616 .contacts
1617 .push(store.contact_for_user(requester_id, false));
1618 }
1619 update
1620 .remove_incoming_requests
1621 .push(requester_id.to_proto());
1622 for connection_id in store.connection_ids_for_user(responder_id) {
1623 self.peer.send(connection_id, update.clone())?;
1624 }
1625
1626 // Update requester with new contact
1627 let mut update = proto::UpdateContacts::default();
1628 if accept {
1629 update
1630 .contacts
1631 .push(store.contact_for_user(responder_id, true));
1632 }
1633 update
1634 .remove_outgoing_requests
1635 .push(responder_id.to_proto());
1636 for connection_id in store.connection_ids_for_user(requester_id) {
1637 self.peer.send(connection_id, update.clone())?;
1638 }
1639 }
1640
1641 response.send(proto::Ack {})?;
1642 Ok(())
1643 }
1644
1645 async fn remove_contact(
1646 self: Arc<Server>,
1647 request: Message<proto::RemoveContact>,
1648 response: Response<proto::RemoveContact>,
1649 ) -> Result<()> {
1650 let requester_id = request.sender_user_id;
1651 let responder_id = UserId::from_proto(request.payload.user_id);
1652 self.app_state
1653 .db
1654 .remove_contact(requester_id, responder_id)
1655 .await?;
1656
1657 // Update outgoing contact requests of requester
1658 let mut update = proto::UpdateContacts::default();
1659 update
1660 .remove_outgoing_requests
1661 .push(responder_id.to_proto());
1662 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1663 self.peer.send(connection_id, update.clone())?;
1664 }
1665
1666 // Update incoming contact requests of responder
1667 let mut update = proto::UpdateContacts::default();
1668 update
1669 .remove_incoming_requests
1670 .push(requester_id.to_proto());
1671 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1672 self.peer.send(connection_id, update.clone())?;
1673 }
1674
1675 response.send(proto::Ack {})?;
1676 Ok(())
1677 }
1678
1679 async fn update_diff_base(
1680 self: Arc<Server>,
1681 request: Message<proto::UpdateDiffBase>,
1682 ) -> Result<()> {
1683 let receiver_ids = self.store().await.project_connection_ids(
1684 ProjectId::from_proto(request.payload.project_id),
1685 request.sender_connection_id,
1686 )?;
1687 broadcast(
1688 request.sender_connection_id,
1689 receiver_ids,
1690 |connection_id| {
1691 self.peer.forward_send(
1692 request.sender_connection_id,
1693 connection_id,
1694 request.payload.clone(),
1695 )
1696 },
1697 );
1698 Ok(())
1699 }
1700
1701 async fn get_private_user_info(
1702 self: Arc<Self>,
1703 request: Message<proto::GetPrivateUserInfo>,
1704 response: Response<proto::GetPrivateUserInfo>,
1705 ) -> Result<()> {
1706 let metrics_id = self
1707 .app_state
1708 .db
1709 .get_user_metrics_id(request.sender_user_id)
1710 .await?;
1711 let user = self
1712 .app_state
1713 .db
1714 .get_user_by_id(request.sender_user_id)
1715 .await?
1716 .ok_or_else(|| anyhow!("user not found"))?;
1717 response.send(proto::GetPrivateUserInfoResponse {
1718 metrics_id,
1719 staff: user.admin,
1720 })?;
1721 Ok(())
1722 }
1723
1724 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1725 #[cfg(test)]
1726 tokio::task::yield_now().await;
1727 let guard = self.store.lock().await;
1728 #[cfg(test)]
1729 tokio::task::yield_now().await;
1730 StoreGuard {
1731 guard,
1732 _not_send: PhantomData,
1733 }
1734 }
1735
1736 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1737 ServerSnapshot {
1738 store: self.store().await,
1739 peer: &self.peer,
1740 }
1741 }
1742}
1743
1744impl<'a> Deref for StoreGuard<'a> {
1745 type Target = Store;
1746
1747 fn deref(&self) -> &Self::Target {
1748 &*self.guard
1749 }
1750}
1751
1752impl<'a> DerefMut for StoreGuard<'a> {
1753 fn deref_mut(&mut self) -> &mut Self::Target {
1754 &mut *self.guard
1755 }
1756}
1757
1758impl<'a> Drop for StoreGuard<'a> {
1759 fn drop(&mut self) {
1760 #[cfg(test)]
1761 self.check_invariants();
1762 }
1763}
1764
1765impl Executor for RealExecutor {
1766 type Sleep = Sleep;
1767
1768 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1769 tokio::task::spawn(future);
1770 }
1771
1772 fn sleep(&self, duration: Duration) -> Self::Sleep {
1773 tokio::time::sleep(duration)
1774 }
1775}
1776
1777fn broadcast<F>(
1778 sender_id: ConnectionId,
1779 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1780 mut f: F,
1781) where
1782 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1783{
1784 for receiver_id in receiver_ids {
1785 if receiver_id != sender_id {
1786 f(receiver_id).trace_err();
1787 }
1788 }
1789}
1790
1791lazy_static! {
1792 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1793}
1794
1795pub struct ProtocolVersion(u32);
1796
1797impl Header for ProtocolVersion {
1798 fn name() -> &'static HeaderName {
1799 &ZED_PROTOCOL_VERSION
1800 }
1801
1802 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1803 where
1804 Self: Sized,
1805 I: Iterator<Item = &'i axum::http::HeaderValue>,
1806 {
1807 let version = values
1808 .next()
1809 .ok_or_else(axum::headers::Error::invalid)?
1810 .to_str()
1811 .map_err(|_| axum::headers::Error::invalid())?
1812 .parse()
1813 .map_err(|_| axum::headers::Error::invalid())?;
1814 Ok(Self(version))
1815 }
1816
1817 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1818 values.extend([self.0.to_string().parse().unwrap()]);
1819 }
1820}
1821
1822pub fn routes(server: Arc<Server>) -> Router<Body> {
1823 Router::new()
1824 .route("/rpc", get(handle_websocket_request))
1825 .layer(
1826 ServiceBuilder::new()
1827 .layer(Extension(server.app_state.clone()))
1828 .layer(middleware::from_fn(auth::validate_header)),
1829 )
1830 .route("/metrics", get(handle_metrics))
1831 .layer(Extension(server))
1832}
1833
1834pub async fn handle_websocket_request(
1835 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1836 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1837 Extension(server): Extension<Arc<Server>>,
1838 Extension(user): Extension<User>,
1839 ws: WebSocketUpgrade,
1840) -> axum::response::Response {
1841 if protocol_version != rpc::PROTOCOL_VERSION {
1842 return (
1843 StatusCode::UPGRADE_REQUIRED,
1844 "client must be upgraded".to_string(),
1845 )
1846 .into_response();
1847 }
1848 let socket_address = socket_address.to_string();
1849 ws.on_upgrade(move |socket| {
1850 use util::ResultExt;
1851 let socket = socket
1852 .map_ok(to_tungstenite_message)
1853 .err_into()
1854 .with(|message| async move { Ok(to_axum_message(message)) });
1855 let connection = Connection::new(Box::pin(socket));
1856 async move {
1857 server
1858 .handle_connection(connection, socket_address, user, None, RealExecutor)
1859 .await
1860 .log_err();
1861 }
1862 })
1863}
1864
1865pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1866 let metrics = server.store().await.metrics();
1867 METRIC_CONNECTIONS.set(metrics.connections as _);
1868 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1869
1870 let encoder = prometheus::TextEncoder::new();
1871 let metric_families = prometheus::gather();
1872 match encoder.encode_to_string(&metric_families) {
1873 Ok(string) => (StatusCode::OK, string).into_response(),
1874 Err(error) => (
1875 StatusCode::INTERNAL_SERVER_ERROR,
1876 format!("failed to encode metrics {:?}", error),
1877 )
1878 .into_response(),
1879 }
1880}
1881
1882fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1883 match message {
1884 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1885 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1886 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1887 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1888 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1889 code: frame.code.into(),
1890 reason: frame.reason,
1891 })),
1892 }
1893}
1894
1895fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1896 match message {
1897 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1898 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1899 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1900 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1901 AxumMessage::Close(frame) => {
1902 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1903 code: frame.code.into(),
1904 reason: frame.reason,
1905 }))
1906 }
1907 }
1908}
1909
1910pub trait ResultExt {
1911 type Ok;
1912
1913 fn trace_err(self) -> Option<Self::Ok>;
1914}
1915
1916impl<T, E> ResultExt for Result<T, E>
1917where
1918 E: std::fmt::Debug,
1919{
1920 type Ok = T;
1921
1922 fn trace_err(self) -> Option<T> {
1923 match self {
1924 Ok(value) => Some(value),
1925 Err(error) => {
1926 tracing::error!("{:?}", error);
1927 None
1928 }
1929 }
1930 }
1931}