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_message_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 connection_id: ConnectionId,
628 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(connection_id).await? else {
633 return Err(anyhow!("no room to leave"))?;
634 };
635 contacts_to_update.insert(user_id);
636
637 for project in left_room.left_projects.into_values() {
638 if project.host_user_id == user_id {
639 for connection_id in project.connection_ids {
640 self.peer
641 .send(
642 connection_id,
643 proto::UnshareProject {
644 project_id: project.id.to_proto(),
645 },
646 )
647 .trace_err();
648 }
649 } else {
650 for connection_id in project.connection_ids {
651 self.peer
652 .send(
653 connection_id,
654 proto::RemoveProjectCollaborator {
655 project_id: project.id.to_proto(),
656 peer_id: connection_id.0,
657 },
658 )
659 .trace_err();
660 }
661
662 self.peer
663 .send(
664 connection_id,
665 proto::UnshareProject {
666 project_id: project.id.to_proto(),
667 },
668 )
669 .trace_err();
670 }
671 }
672
673 self.room_updated(&left_room.room);
674 {
675 let store = self.store().await;
676 for canceled_user_id in left_room.canceled_calls_to_user_ids {
677 for connection_id in store.connection_ids_for_user(canceled_user_id) {
678 self.peer
679 .send(connection_id, proto::CallCanceled {})
680 .trace_err();
681 }
682 contacts_to_update.insert(canceled_user_id);
683 }
684 }
685
686 for contact_user_id in contacts_to_update {
687 self.update_user_contacts(contact_user_id).await?;
688 }
689
690 if let Some(live_kit) = self.app_state.live_kit_client.as_ref() {
691 live_kit
692 .remove_participant(
693 left_room.room.live_kit_room.clone(),
694 connection_id.to_string(),
695 )
696 .await
697 .trace_err();
698
699 if left_room.room.participants.is_empty() {
700 live_kit
701 .delete_room(left_room.room.live_kit_room)
702 .await
703 .trace_err();
704 }
705 }
706
707 Ok(())
708 }
709
710 async fn call(
711 self: Arc<Server>,
712 request: Message<proto::Call>,
713 response: Response<proto::Call>,
714 ) -> Result<()> {
715 let room_id = RoomId::from_proto(request.payload.room_id);
716 let calling_user_id = request.sender_user_id;
717 let calling_connection_id = request.sender_connection_id;
718 let called_user_id = UserId::from_proto(request.payload.called_user_id);
719 let initial_project_id = request
720 .payload
721 .initial_project_id
722 .map(ProjectId::from_proto);
723 if !self
724 .app_state
725 .db
726 .has_contact(calling_user_id, called_user_id)
727 .await?
728 {
729 return Err(anyhow!("cannot call a user who isn't a contact"))?;
730 }
731
732 let (room, incoming_call) = self
733 .app_state
734 .db
735 .call(
736 room_id,
737 calling_user_id,
738 calling_connection_id,
739 called_user_id,
740 initial_project_id,
741 )
742 .await?;
743 self.room_updated(&room);
744 self.update_user_contacts(called_user_id).await?;
745
746 let mut calls = self
747 .store()
748 .await
749 .connection_ids_for_user(called_user_id)
750 .map(|connection_id| self.peer.request(connection_id, incoming_call.clone()))
751 .collect::<FuturesUnordered<_>>();
752
753 while let Some(call_response) = calls.next().await {
754 match call_response.as_ref() {
755 Ok(_) => {
756 response.send(proto::Ack {})?;
757 return Ok(());
758 }
759 Err(_) => {
760 call_response.trace_err();
761 }
762 }
763 }
764
765 let room = self
766 .app_state
767 .db
768 .call_failed(room_id, called_user_id)
769 .await?;
770 self.room_updated(&room);
771 self.update_user_contacts(called_user_id).await?;
772
773 Err(anyhow!("failed to ring user"))?
774 }
775
776 async fn cancel_call(
777 self: Arc<Server>,
778 request: Message<proto::CancelCall>,
779 response: Response<proto::CancelCall>,
780 ) -> Result<()> {
781 let called_user_id = UserId::from_proto(request.payload.called_user_id);
782 let room_id = RoomId::from_proto(request.payload.room_id);
783 let room = self
784 .app_state
785 .db
786 .cancel_call(Some(room_id), request.sender_connection_id, called_user_id)
787 .await?;
788 for connection_id in self.store().await.connection_ids_for_user(called_user_id) {
789 self.peer
790 .send(connection_id, proto::CallCanceled {})
791 .trace_err();
792 }
793 self.room_updated(&room);
794 response.send(proto::Ack {})?;
795
796 self.update_user_contacts(called_user_id).await?;
797 Ok(())
798 }
799
800 async fn decline_call(self: Arc<Server>, message: Message<proto::DeclineCall>) -> Result<()> {
801 let room_id = RoomId::from_proto(message.payload.room_id);
802 let room = self
803 .app_state
804 .db
805 .decline_call(Some(room_id), message.sender_user_id)
806 .await?;
807 for connection_id in self
808 .store()
809 .await
810 .connection_ids_for_user(message.sender_user_id)
811 {
812 self.peer
813 .send(connection_id, proto::CallCanceled {})
814 .trace_err();
815 }
816 self.room_updated(&room);
817 self.update_user_contacts(message.sender_user_id).await?;
818 Ok(())
819 }
820
821 async fn update_participant_location(
822 self: Arc<Server>,
823 request: Message<proto::UpdateParticipantLocation>,
824 response: Response<proto::UpdateParticipantLocation>,
825 ) -> Result<()> {
826 let room_id = RoomId::from_proto(request.payload.room_id);
827 let location = request
828 .payload
829 .location
830 .ok_or_else(|| anyhow!("invalid location"))?;
831 let room = self
832 .app_state
833 .db
834 .update_room_participant_location(room_id, request.sender_connection_id, location)
835 .await?;
836 self.room_updated(&room);
837 response.send(proto::Ack {})?;
838 Ok(())
839 }
840
841 fn room_updated(&self, room: &proto::Room) {
842 for participant in &room.participants {
843 self.peer
844 .send(
845 ConnectionId(participant.peer_id),
846 proto::RoomUpdated {
847 room: Some(room.clone()),
848 },
849 )
850 .trace_err();
851 }
852 }
853
854 async fn share_project(
855 self: Arc<Server>,
856 request: Message<proto::ShareProject>,
857 response: Response<proto::ShareProject>,
858 ) -> Result<()> {
859 let (project_id, room) = self
860 .app_state
861 .db
862 .share_project(
863 RoomId::from_proto(request.payload.room_id),
864 request.sender_connection_id,
865 &request.payload.worktrees,
866 )
867 .await
868 .unwrap();
869 response.send(proto::ShareProjectResponse {
870 project_id: project_id.to_proto(),
871 })?;
872 self.room_updated(&room);
873
874 Ok(())
875 }
876
877 async fn unshare_project(
878 self: Arc<Server>,
879 message: Message<proto::UnshareProject>,
880 ) -> Result<()> {
881 let project_id = ProjectId::from_proto(message.payload.project_id);
882 let mut store = self.store().await;
883 let (room, project) = store.unshare_project(project_id, message.sender_connection_id)?;
884 broadcast(
885 message.sender_connection_id,
886 project.guest_connection_ids(),
887 |conn_id| self.peer.send(conn_id, message.payload.clone()),
888 );
889 self.room_updated(room);
890
891 Ok(())
892 }
893
894 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
895 let contacts = self.app_state.db.get_contacts(user_id).await?;
896 let busy = self.app_state.db.is_user_busy(user_id).await?;
897 let store = self.store().await;
898 let updated_contact = store.contact_for_user(user_id, false, busy);
899 for contact in contacts {
900 if let db::Contact::Accepted {
901 user_id: contact_user_id,
902 ..
903 } = contact
904 {
905 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
906 self.peer
907 .send(
908 contact_conn_id,
909 proto::UpdateContacts {
910 contacts: vec![updated_contact.clone()],
911 remove_contacts: Default::default(),
912 incoming_requests: Default::default(),
913 remove_incoming_requests: Default::default(),
914 outgoing_requests: Default::default(),
915 remove_outgoing_requests: Default::default(),
916 },
917 )
918 .trace_err();
919 }
920 }
921 }
922 Ok(())
923 }
924
925 async fn join_project(
926 self: Arc<Server>,
927 request: Message<proto::JoinProject>,
928 response: Response<proto::JoinProject>,
929 ) -> Result<()> {
930 let project_id = ProjectId::from_proto(request.payload.project_id);
931 let guest_user_id = request.sender_user_id;
932
933 tracing::info!(%project_id, "join project");
934
935 let (project, replica_id) = self
936 .app_state
937 .db
938 .join_project(project_id, request.sender_connection_id)
939 .await?;
940
941 let collaborators = project
942 .collaborators
943 .iter()
944 .map(|collaborator| proto::Collaborator {
945 peer_id: collaborator.connection_id as u32,
946 replica_id: collaborator.replica_id.0 as u32,
947 user_id: collaborator.user_id.to_proto(),
948 })
949 .collect::<Vec<_>>();
950 let worktrees = project
951 .worktrees
952 .iter()
953 .map(|(id, worktree)| proto::WorktreeMetadata {
954 id: id.to_proto(),
955 root_name: worktree.root_name.clone(),
956 visible: worktree.visible,
957 abs_path: worktree.abs_path.clone(),
958 })
959 .collect::<Vec<_>>();
960
961 for collaborator in &project.collaborators {
962 let connection_id = ConnectionId(collaborator.connection_id as u32);
963 if connection_id != request.sender_connection_id {
964 self.peer
965 .send(
966 connection_id,
967 proto::AddProjectCollaborator {
968 project_id: project_id.to_proto(),
969 collaborator: Some(proto::Collaborator {
970 peer_id: request.sender_connection_id.0,
971 replica_id: replica_id.0 as u32,
972 user_id: guest_user_id.to_proto(),
973 }),
974 },
975 )
976 .trace_err();
977 }
978 }
979
980 // First, we send the metadata associated with each worktree.
981 response.send(proto::JoinProjectResponse {
982 worktrees: worktrees.clone(),
983 replica_id: replica_id.0 as u32,
984 collaborators: collaborators.clone(),
985 language_servers: project.language_servers.clone(),
986 })?;
987
988 for (worktree_id, worktree) in project.worktrees {
989 #[cfg(any(test, feature = "test-support"))]
990 const MAX_CHUNK_SIZE: usize = 2;
991 #[cfg(not(any(test, feature = "test-support")))]
992 const MAX_CHUNK_SIZE: usize = 256;
993
994 // Stream this worktree's entries.
995 let message = proto::UpdateWorktree {
996 project_id: project_id.to_proto(),
997 worktree_id: worktree_id.to_proto(),
998 abs_path: worktree.abs_path.clone(),
999 root_name: worktree.root_name,
1000 updated_entries: worktree.entries,
1001 removed_entries: Default::default(),
1002 scan_id: worktree.scan_id,
1003 is_last_update: worktree.is_complete,
1004 };
1005 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1006 self.peer
1007 .send(request.sender_connection_id, update.clone())?;
1008 }
1009
1010 // Stream this worktree's diagnostics.
1011 for summary in worktree.diagnostic_summaries {
1012 self.peer.send(
1013 request.sender_connection_id,
1014 proto::UpdateDiagnosticSummary {
1015 project_id: project_id.to_proto(),
1016 worktree_id: worktree.id.to_proto(),
1017 summary: Some(summary),
1018 },
1019 )?;
1020 }
1021 }
1022
1023 for language_server in &project.language_servers {
1024 self.peer.send(
1025 request.sender_connection_id,
1026 proto::UpdateLanguageServer {
1027 project_id: project_id.to_proto(),
1028 language_server_id: language_server.id,
1029 variant: Some(
1030 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1031 proto::LspDiskBasedDiagnosticsUpdated {},
1032 ),
1033 ),
1034 },
1035 )?;
1036 }
1037
1038 Ok(())
1039 }
1040
1041 async fn leave_project(self: Arc<Server>, request: Message<proto::LeaveProject>) -> Result<()> {
1042 let sender_id = request.sender_connection_id;
1043 let project_id = ProjectId::from_proto(request.payload.project_id);
1044 let project;
1045 {
1046 let mut store = self.store().await;
1047 project = store.leave_project(project_id, sender_id)?;
1048 tracing::info!(
1049 %project_id,
1050 host_user_id = %project.host_user_id,
1051 host_connection_id = %project.host_connection_id,
1052 "leave project"
1053 );
1054
1055 if project.remove_collaborator {
1056 broadcast(sender_id, project.connection_ids, |conn_id| {
1057 self.peer.send(
1058 conn_id,
1059 proto::RemoveProjectCollaborator {
1060 project_id: project_id.to_proto(),
1061 peer_id: sender_id.0,
1062 },
1063 )
1064 });
1065 }
1066 }
1067
1068 Ok(())
1069 }
1070
1071 async fn update_project(
1072 self: Arc<Server>,
1073 request: Message<proto::UpdateProject>,
1074 response: Response<proto::UpdateProject>,
1075 ) -> Result<()> {
1076 let project_id = ProjectId::from_proto(request.payload.project_id);
1077 let (room, guest_connection_ids) = self
1078 .app_state
1079 .db
1080 .update_project(
1081 project_id,
1082 request.sender_connection_id,
1083 &request.payload.worktrees,
1084 )
1085 .await?;
1086 broadcast(
1087 request.sender_connection_id,
1088 guest_connection_ids,
1089 |connection_id| {
1090 self.peer.forward_send(
1091 request.sender_connection_id,
1092 connection_id,
1093 request.payload.clone(),
1094 )
1095 },
1096 );
1097 self.room_updated(&room);
1098 response.send(proto::Ack {})?;
1099
1100 Ok(())
1101 }
1102
1103 async fn update_worktree(
1104 self: Arc<Server>,
1105 request: Message<proto::UpdateWorktree>,
1106 response: Response<proto::UpdateWorktree>,
1107 ) -> Result<()> {
1108 let connection_ids = self
1109 .app_state
1110 .db
1111 .update_worktree(&request.payload, request.sender_connection_id)
1112 .await?;
1113
1114 broadcast(
1115 request.sender_connection_id,
1116 connection_ids,
1117 |connection_id| {
1118 self.peer.forward_send(
1119 request.sender_connection_id,
1120 connection_id,
1121 request.payload.clone(),
1122 )
1123 },
1124 );
1125 response.send(proto::Ack {})?;
1126 Ok(())
1127 }
1128
1129 async fn update_diagnostic_summary(
1130 self: Arc<Server>,
1131 request: Message<proto::UpdateDiagnosticSummary>,
1132 ) -> Result<()> {
1133 let summary = request
1134 .payload
1135 .summary
1136 .clone()
1137 .ok_or_else(|| anyhow!("invalid summary"))?;
1138 let receiver_ids = self.store().await.update_diagnostic_summary(
1139 ProjectId::from_proto(request.payload.project_id),
1140 request.payload.worktree_id,
1141 request.sender_connection_id,
1142 summary,
1143 )?;
1144
1145 broadcast(
1146 request.sender_connection_id,
1147 receiver_ids,
1148 |connection_id| {
1149 self.peer.forward_send(
1150 request.sender_connection_id,
1151 connection_id,
1152 request.payload.clone(),
1153 )
1154 },
1155 );
1156 Ok(())
1157 }
1158
1159 async fn start_language_server(
1160 self: Arc<Server>,
1161 request: Message<proto::StartLanguageServer>,
1162 ) -> Result<()> {
1163 let receiver_ids = self.store().await.start_language_server(
1164 ProjectId::from_proto(request.payload.project_id),
1165 request.sender_connection_id,
1166 request
1167 .payload
1168 .server
1169 .clone()
1170 .ok_or_else(|| anyhow!("invalid language server"))?,
1171 )?;
1172 broadcast(
1173 request.sender_connection_id,
1174 receiver_ids,
1175 |connection_id| {
1176 self.peer.forward_send(
1177 request.sender_connection_id,
1178 connection_id,
1179 request.payload.clone(),
1180 )
1181 },
1182 );
1183 Ok(())
1184 }
1185
1186 async fn update_language_server(
1187 self: Arc<Server>,
1188 request: Message<proto::UpdateLanguageServer>,
1189 ) -> Result<()> {
1190 let receiver_ids = self.store().await.project_connection_ids(
1191 ProjectId::from_proto(request.payload.project_id),
1192 request.sender_connection_id,
1193 )?;
1194 broadcast(
1195 request.sender_connection_id,
1196 receiver_ids,
1197 |connection_id| {
1198 self.peer.forward_send(
1199 request.sender_connection_id,
1200 connection_id,
1201 request.payload.clone(),
1202 )
1203 },
1204 );
1205 Ok(())
1206 }
1207
1208 async fn forward_project_request<T>(
1209 self: Arc<Server>,
1210 request: Message<T>,
1211 response: Response<T>,
1212 ) -> Result<()>
1213 where
1214 T: EntityMessage + RequestMessage,
1215 {
1216 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1217 let host_connection_id = self
1218 .store()
1219 .await
1220 .read_project(project_id, request.sender_connection_id)?
1221 .host_connection_id;
1222 let payload = self
1223 .peer
1224 .forward_request(
1225 request.sender_connection_id,
1226 host_connection_id,
1227 request.payload,
1228 )
1229 .await?;
1230
1231 // Ensure project still exists by the time we get the response from the host.
1232 self.store()
1233 .await
1234 .read_project(project_id, request.sender_connection_id)?;
1235
1236 response.send(payload)?;
1237 Ok(())
1238 }
1239
1240 async fn save_buffer(
1241 self: Arc<Server>,
1242 request: Message<proto::SaveBuffer>,
1243 response: Response<proto::SaveBuffer>,
1244 ) -> Result<()> {
1245 let project_id = ProjectId::from_proto(request.payload.project_id);
1246 let host = self
1247 .store()
1248 .await
1249 .read_project(project_id, request.sender_connection_id)?
1250 .host_connection_id;
1251 let response_payload = self
1252 .peer
1253 .forward_request(request.sender_connection_id, host, request.payload.clone())
1254 .await?;
1255
1256 let mut guests = self
1257 .store()
1258 .await
1259 .read_project(project_id, request.sender_connection_id)?
1260 .connection_ids();
1261 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_connection_id);
1262 broadcast(host, guests, |conn_id| {
1263 self.peer
1264 .forward_send(host, conn_id, response_payload.clone())
1265 });
1266 response.send(response_payload)?;
1267 Ok(())
1268 }
1269
1270 async fn create_buffer_for_peer(
1271 self: Arc<Server>,
1272 request: Message<proto::CreateBufferForPeer>,
1273 ) -> Result<()> {
1274 self.peer.forward_send(
1275 request.sender_connection_id,
1276 ConnectionId(request.payload.peer_id),
1277 request.payload,
1278 )?;
1279 Ok(())
1280 }
1281
1282 async fn update_buffer(
1283 self: Arc<Server>,
1284 request: Message<proto::UpdateBuffer>,
1285 response: Response<proto::UpdateBuffer>,
1286 ) -> Result<()> {
1287 let project_id = ProjectId::from_proto(request.payload.project_id);
1288 let receiver_ids = {
1289 let store = self.store().await;
1290 store.project_connection_ids(project_id, request.sender_connection_id)?
1291 };
1292
1293 broadcast(
1294 request.sender_connection_id,
1295 receiver_ids,
1296 |connection_id| {
1297 self.peer.forward_send(
1298 request.sender_connection_id,
1299 connection_id,
1300 request.payload.clone(),
1301 )
1302 },
1303 );
1304 response.send(proto::Ack {})?;
1305 Ok(())
1306 }
1307
1308 async fn update_buffer_file(
1309 self: Arc<Server>,
1310 request: Message<proto::UpdateBufferFile>,
1311 ) -> Result<()> {
1312 let receiver_ids = self.store().await.project_connection_ids(
1313 ProjectId::from_proto(request.payload.project_id),
1314 request.sender_connection_id,
1315 )?;
1316 broadcast(
1317 request.sender_connection_id,
1318 receiver_ids,
1319 |connection_id| {
1320 self.peer.forward_send(
1321 request.sender_connection_id,
1322 connection_id,
1323 request.payload.clone(),
1324 )
1325 },
1326 );
1327 Ok(())
1328 }
1329
1330 async fn buffer_reloaded(
1331 self: Arc<Server>,
1332 request: Message<proto::BufferReloaded>,
1333 ) -> Result<()> {
1334 let receiver_ids = self.store().await.project_connection_ids(
1335 ProjectId::from_proto(request.payload.project_id),
1336 request.sender_connection_id,
1337 )?;
1338 broadcast(
1339 request.sender_connection_id,
1340 receiver_ids,
1341 |connection_id| {
1342 self.peer.forward_send(
1343 request.sender_connection_id,
1344 connection_id,
1345 request.payload.clone(),
1346 )
1347 },
1348 );
1349 Ok(())
1350 }
1351
1352 async fn buffer_saved(self: Arc<Server>, request: Message<proto::BufferSaved>) -> Result<()> {
1353 let receiver_ids = self.store().await.project_connection_ids(
1354 ProjectId::from_proto(request.payload.project_id),
1355 request.sender_connection_id,
1356 )?;
1357 broadcast(
1358 request.sender_connection_id,
1359 receiver_ids,
1360 |connection_id| {
1361 self.peer.forward_send(
1362 request.sender_connection_id,
1363 connection_id,
1364 request.payload.clone(),
1365 )
1366 },
1367 );
1368 Ok(())
1369 }
1370
1371 async fn follow(
1372 self: Arc<Self>,
1373 request: Message<proto::Follow>,
1374 response: Response<proto::Follow>,
1375 ) -> Result<()> {
1376 let project_id = ProjectId::from_proto(request.payload.project_id);
1377 let leader_id = ConnectionId(request.payload.leader_id);
1378 let follower_id = request.sender_connection_id;
1379 {
1380 let store = self.store().await;
1381 if !store
1382 .project_connection_ids(project_id, follower_id)?
1383 .contains(&leader_id)
1384 {
1385 Err(anyhow!("no such peer"))?;
1386 }
1387 }
1388
1389 let mut response_payload = self
1390 .peer
1391 .forward_request(request.sender_connection_id, leader_id, request.payload)
1392 .await?;
1393 response_payload
1394 .views
1395 .retain(|view| view.leader_id != Some(follower_id.0));
1396 response.send(response_payload)?;
1397 Ok(())
1398 }
1399
1400 async fn unfollow(self: Arc<Self>, request: Message<proto::Unfollow>) -> Result<()> {
1401 let project_id = ProjectId::from_proto(request.payload.project_id);
1402 let leader_id = ConnectionId(request.payload.leader_id);
1403 let store = self.store().await;
1404 if !store
1405 .project_connection_ids(project_id, request.sender_connection_id)?
1406 .contains(&leader_id)
1407 {
1408 Err(anyhow!("no such peer"))?;
1409 }
1410 self.peer
1411 .forward_send(request.sender_connection_id, leader_id, request.payload)?;
1412 Ok(())
1413 }
1414
1415 async fn update_followers(
1416 self: Arc<Self>,
1417 request: Message<proto::UpdateFollowers>,
1418 ) -> Result<()> {
1419 let project_id = ProjectId::from_proto(request.payload.project_id);
1420 let store = self.store().await;
1421 let connection_ids =
1422 store.project_connection_ids(project_id, request.sender_connection_id)?;
1423 let leader_id = request
1424 .payload
1425 .variant
1426 .as_ref()
1427 .and_then(|variant| match variant {
1428 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1429 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1430 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1431 });
1432 for follower_id in &request.payload.follower_ids {
1433 let follower_id = ConnectionId(*follower_id);
1434 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1435 self.peer.forward_send(
1436 request.sender_connection_id,
1437 follower_id,
1438 request.payload.clone(),
1439 )?;
1440 }
1441 }
1442 Ok(())
1443 }
1444
1445 async fn get_users(
1446 self: Arc<Server>,
1447 request: Message<proto::GetUsers>,
1448 response: Response<proto::GetUsers>,
1449 ) -> Result<()> {
1450 let user_ids = request
1451 .payload
1452 .user_ids
1453 .into_iter()
1454 .map(UserId::from_proto)
1455 .collect();
1456 let users = self
1457 .app_state
1458 .db
1459 .get_users_by_ids(user_ids)
1460 .await?
1461 .into_iter()
1462 .map(|user| proto::User {
1463 id: user.id.to_proto(),
1464 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1465 github_login: user.github_login,
1466 })
1467 .collect();
1468 response.send(proto::UsersResponse { users })?;
1469 Ok(())
1470 }
1471
1472 async fn fuzzy_search_users(
1473 self: Arc<Server>,
1474 request: Message<proto::FuzzySearchUsers>,
1475 response: Response<proto::FuzzySearchUsers>,
1476 ) -> Result<()> {
1477 let query = request.payload.query;
1478 let db = &self.app_state.db;
1479 let users = match query.len() {
1480 0 => vec![],
1481 1 | 2 => db
1482 .get_user_by_github_account(&query, None)
1483 .await?
1484 .into_iter()
1485 .collect(),
1486 _ => db.fuzzy_search_users(&query, 10).await?,
1487 };
1488 let users = users
1489 .into_iter()
1490 .filter(|user| user.id != request.sender_user_id)
1491 .map(|user| proto::User {
1492 id: user.id.to_proto(),
1493 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1494 github_login: user.github_login,
1495 })
1496 .collect();
1497 response.send(proto::UsersResponse { users })?;
1498 Ok(())
1499 }
1500
1501 async fn request_contact(
1502 self: Arc<Server>,
1503 request: Message<proto::RequestContact>,
1504 response: Response<proto::RequestContact>,
1505 ) -> Result<()> {
1506 let requester_id = request.sender_user_id;
1507 let responder_id = UserId::from_proto(request.payload.responder_id);
1508 if requester_id == responder_id {
1509 return Err(anyhow!("cannot add yourself as a contact"))?;
1510 }
1511
1512 self.app_state
1513 .db
1514 .send_contact_request(requester_id, responder_id)
1515 .await?;
1516
1517 // Update outgoing contact requests of requester
1518 let mut update = proto::UpdateContacts::default();
1519 update.outgoing_requests.push(responder_id.to_proto());
1520 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1521 self.peer.send(connection_id, update.clone())?;
1522 }
1523
1524 // Update incoming contact requests of responder
1525 let mut update = proto::UpdateContacts::default();
1526 update
1527 .incoming_requests
1528 .push(proto::IncomingContactRequest {
1529 requester_id: requester_id.to_proto(),
1530 should_notify: true,
1531 });
1532 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1533 self.peer.send(connection_id, update.clone())?;
1534 }
1535
1536 response.send(proto::Ack {})?;
1537 Ok(())
1538 }
1539
1540 async fn respond_to_contact_request(
1541 self: Arc<Server>,
1542 request: Message<proto::RespondToContactRequest>,
1543 response: Response<proto::RespondToContactRequest>,
1544 ) -> Result<()> {
1545 let responder_id = request.sender_user_id;
1546 let requester_id = UserId::from_proto(request.payload.requester_id);
1547 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1548 self.app_state
1549 .db
1550 .dismiss_contact_notification(responder_id, requester_id)
1551 .await?;
1552 } else {
1553 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1554 self.app_state
1555 .db
1556 .respond_to_contact_request(responder_id, requester_id, accept)
1557 .await?;
1558 let busy = self.app_state.db.is_user_busy(requester_id).await?;
1559
1560 let store = self.store().await;
1561 // Update responder with new contact
1562 let mut update = proto::UpdateContacts::default();
1563 if accept {
1564 update
1565 .contacts
1566 .push(store.contact_for_user(requester_id, false, busy));
1567 }
1568 update
1569 .remove_incoming_requests
1570 .push(requester_id.to_proto());
1571 for connection_id in store.connection_ids_for_user(responder_id) {
1572 self.peer.send(connection_id, update.clone())?;
1573 }
1574
1575 // Update requester with new contact
1576 let mut update = proto::UpdateContacts::default();
1577 if accept {
1578 update
1579 .contacts
1580 .push(store.contact_for_user(responder_id, true, busy));
1581 }
1582 update
1583 .remove_outgoing_requests
1584 .push(responder_id.to_proto());
1585 for connection_id in store.connection_ids_for_user(requester_id) {
1586 self.peer.send(connection_id, update.clone())?;
1587 }
1588 }
1589
1590 response.send(proto::Ack {})?;
1591 Ok(())
1592 }
1593
1594 async fn remove_contact(
1595 self: Arc<Server>,
1596 request: Message<proto::RemoveContact>,
1597 response: Response<proto::RemoveContact>,
1598 ) -> Result<()> {
1599 let requester_id = request.sender_user_id;
1600 let responder_id = UserId::from_proto(request.payload.user_id);
1601 self.app_state
1602 .db
1603 .remove_contact(requester_id, responder_id)
1604 .await?;
1605
1606 // Update outgoing contact requests of requester
1607 let mut update = proto::UpdateContacts::default();
1608 update
1609 .remove_outgoing_requests
1610 .push(responder_id.to_proto());
1611 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1612 self.peer.send(connection_id, update.clone())?;
1613 }
1614
1615 // Update incoming contact requests of responder
1616 let mut update = proto::UpdateContacts::default();
1617 update
1618 .remove_incoming_requests
1619 .push(requester_id.to_proto());
1620 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1621 self.peer.send(connection_id, update.clone())?;
1622 }
1623
1624 response.send(proto::Ack {})?;
1625 Ok(())
1626 }
1627
1628 async fn update_diff_base(
1629 self: Arc<Server>,
1630 request: Message<proto::UpdateDiffBase>,
1631 ) -> Result<()> {
1632 let receiver_ids = self.store().await.project_connection_ids(
1633 ProjectId::from_proto(request.payload.project_id),
1634 request.sender_connection_id,
1635 )?;
1636 broadcast(
1637 request.sender_connection_id,
1638 receiver_ids,
1639 |connection_id| {
1640 self.peer.forward_send(
1641 request.sender_connection_id,
1642 connection_id,
1643 request.payload.clone(),
1644 )
1645 },
1646 );
1647 Ok(())
1648 }
1649
1650 async fn get_private_user_info(
1651 self: Arc<Self>,
1652 request: Message<proto::GetPrivateUserInfo>,
1653 response: Response<proto::GetPrivateUserInfo>,
1654 ) -> Result<()> {
1655 let metrics_id = self
1656 .app_state
1657 .db
1658 .get_user_metrics_id(request.sender_user_id)
1659 .await?;
1660 let user = self
1661 .app_state
1662 .db
1663 .get_user_by_id(request.sender_user_id)
1664 .await?
1665 .ok_or_else(|| anyhow!("user not found"))?;
1666 response.send(proto::GetPrivateUserInfoResponse {
1667 metrics_id,
1668 staff: user.admin,
1669 })?;
1670 Ok(())
1671 }
1672
1673 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1674 #[cfg(test)]
1675 tokio::task::yield_now().await;
1676 let guard = self.store.lock().await;
1677 #[cfg(test)]
1678 tokio::task::yield_now().await;
1679 StoreGuard {
1680 guard,
1681 _not_send: PhantomData,
1682 }
1683 }
1684
1685 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1686 ServerSnapshot {
1687 store: self.store().await,
1688 peer: &self.peer,
1689 }
1690 }
1691}
1692
1693impl<'a> Deref for StoreGuard<'a> {
1694 type Target = Store;
1695
1696 fn deref(&self) -> &Self::Target {
1697 &*self.guard
1698 }
1699}
1700
1701impl<'a> DerefMut for StoreGuard<'a> {
1702 fn deref_mut(&mut self) -> &mut Self::Target {
1703 &mut *self.guard
1704 }
1705}
1706
1707impl<'a> Drop for StoreGuard<'a> {
1708 fn drop(&mut self) {
1709 #[cfg(test)]
1710 self.check_invariants();
1711 }
1712}
1713
1714impl Executor for RealExecutor {
1715 type Sleep = Sleep;
1716
1717 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1718 tokio::task::spawn(future);
1719 }
1720
1721 fn sleep(&self, duration: Duration) -> Self::Sleep {
1722 tokio::time::sleep(duration)
1723 }
1724}
1725
1726fn broadcast<F>(
1727 sender_id: ConnectionId,
1728 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1729 mut f: F,
1730) where
1731 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1732{
1733 for receiver_id in receiver_ids {
1734 if receiver_id != sender_id {
1735 f(receiver_id).trace_err();
1736 }
1737 }
1738}
1739
1740lazy_static! {
1741 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1742}
1743
1744pub struct ProtocolVersion(u32);
1745
1746impl Header for ProtocolVersion {
1747 fn name() -> &'static HeaderName {
1748 &ZED_PROTOCOL_VERSION
1749 }
1750
1751 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1752 where
1753 Self: Sized,
1754 I: Iterator<Item = &'i axum::http::HeaderValue>,
1755 {
1756 let version = values
1757 .next()
1758 .ok_or_else(axum::headers::Error::invalid)?
1759 .to_str()
1760 .map_err(|_| axum::headers::Error::invalid())?
1761 .parse()
1762 .map_err(|_| axum::headers::Error::invalid())?;
1763 Ok(Self(version))
1764 }
1765
1766 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1767 values.extend([self.0.to_string().parse().unwrap()]);
1768 }
1769}
1770
1771pub fn routes(server: Arc<Server>) -> Router<Body> {
1772 Router::new()
1773 .route("/rpc", get(handle_websocket_request))
1774 .layer(
1775 ServiceBuilder::new()
1776 .layer(Extension(server.app_state.clone()))
1777 .layer(middleware::from_fn(auth::validate_header)),
1778 )
1779 .route("/metrics", get(handle_metrics))
1780 .layer(Extension(server))
1781}
1782
1783pub async fn handle_websocket_request(
1784 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1785 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1786 Extension(server): Extension<Arc<Server>>,
1787 Extension(user): Extension<User>,
1788 ws: WebSocketUpgrade,
1789) -> axum::response::Response {
1790 if protocol_version != rpc::PROTOCOL_VERSION {
1791 return (
1792 StatusCode::UPGRADE_REQUIRED,
1793 "client must be upgraded".to_string(),
1794 )
1795 .into_response();
1796 }
1797 let socket_address = socket_address.to_string();
1798 ws.on_upgrade(move |socket| {
1799 use util::ResultExt;
1800 let socket = socket
1801 .map_ok(to_tungstenite_message)
1802 .err_into()
1803 .with(|message| async move { Ok(to_axum_message(message)) });
1804 let connection = Connection::new(Box::pin(socket));
1805 async move {
1806 server
1807 .handle_connection(connection, socket_address, user, None, RealExecutor)
1808 .await
1809 .log_err();
1810 }
1811 })
1812}
1813
1814pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1815 let metrics = server.store().await.metrics();
1816 METRIC_CONNECTIONS.set(metrics.connections as _);
1817 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1818
1819 let encoder = prometheus::TextEncoder::new();
1820 let metric_families = prometheus::gather();
1821 match encoder.encode_to_string(&metric_families) {
1822 Ok(string) => (StatusCode::OK, string).into_response(),
1823 Err(error) => (
1824 StatusCode::INTERNAL_SERVER_ERROR,
1825 format!("failed to encode metrics {:?}", error),
1826 )
1827 .into_response(),
1828 }
1829}
1830
1831fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1832 match message {
1833 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1834 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1835 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1836 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1837 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1838 code: frame.code.into(),
1839 reason: frame.reason,
1840 })),
1841 }
1842}
1843
1844fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1845 match message {
1846 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1847 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1848 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1849 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1850 AxumMessage::Close(frame) => {
1851 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1852 code: frame.code.into(),
1853 reason: frame.reason,
1854 }))
1855 }
1856 }
1857}
1858
1859pub trait ResultExt {
1860 type Ok;
1861
1862 fn trace_err(self) -> Option<Self::Ok>;
1863}
1864
1865impl<T, E> ResultExt for Result<T, E>
1866where
1867 E: std::fmt::Debug,
1868{
1869 type Ok = T;
1870
1871 fn trace_err(self) -> Option<T> {
1872 match self {
1873 Ok(value) => Some(value),
1874 Err(error) => {
1875 tracing::error!("{:?}", error);
1876 None
1877 }
1878 }
1879 }
1880}