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