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