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, false);
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_connection_id,
866 &request.payload.worktrees,
867 )
868 .await
869 .unwrap();
870 response.send(proto::ShareProjectResponse {
871 project_id: project_id.to_proto(),
872 })?;
873 self.room_updated(&room);
874
875 Ok(())
876 }
877
878 async fn unshare_project(
879 self: Arc<Server>,
880 message: Message<proto::UnshareProject>,
881 ) -> Result<()> {
882 let project_id = ProjectId::from_proto(message.payload.project_id);
883 let mut store = self.store().await;
884 let (room, project) = store.unshare_project(project_id, message.sender_connection_id)?;
885 broadcast(
886 message.sender_connection_id,
887 project.guest_connection_ids(),
888 |conn_id| self.peer.send(conn_id, message.payload.clone()),
889 );
890 self.room_updated(room);
891
892 Ok(())
893 }
894
895 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
896 let contacts = self.app_state.db.get_contacts(user_id).await?;
897 let busy = self.app_state.db.is_user_busy(user_id).await?;
898 let store = self.store().await;
899 let updated_contact = store.contact_for_user(user_id, false, busy);
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 (project, replica_id) = self
945 .app_state
946 .db
947 .join_project(project_id, request.sender_connection_id)
948 .await?;
949
950 let collaborators = project
951 .collaborators
952 .iter()
953 .map(|collaborator| proto::Collaborator {
954 peer_id: collaborator.connection_id as u32,
955 replica_id: collaborator.replica_id as u32,
956 user_id: collaborator.user_id.to_proto(),
957 })
958 .collect::<Vec<_>>();
959 let worktrees = project
960 .worktrees
961 .iter()
962 .map(|(id, worktree)| proto::WorktreeMetadata {
963 id: *id,
964 root_name: worktree.root_name.clone(),
965 visible: worktree.visible,
966 abs_path: worktree.abs_path.as_os_str().as_bytes().to_vec(),
967 })
968 .collect::<Vec<_>>();
969
970 for collaborator in &project.collaborators {
971 let connection_id = ConnectionId(collaborator.connection_id as u32);
972 if connection_id != request.sender_connection_id {
973 self.peer
974 .send(
975 connection_id,
976 proto::AddProjectCollaborator {
977 project_id: project_id.to_proto(),
978 collaborator: Some(proto::Collaborator {
979 peer_id: request.sender_connection_id.0,
980 replica_id: replica_id as u32,
981 user_id: guest_user_id.to_proto(),
982 }),
983 },
984 )
985 .trace_err();
986 }
987 }
988
989 // First, we send the metadata associated with each worktree.
990 response.send(proto::JoinProjectResponse {
991 worktrees: worktrees.clone(),
992 replica_id: replica_id as u32,
993 collaborators: collaborators.clone(),
994 language_servers: project.language_servers.clone(),
995 })?;
996
997 for (worktree_id, worktree) in &project.worktrees {
998 #[cfg(any(test, feature = "test-support"))]
999 const MAX_CHUNK_SIZE: usize = 2;
1000 #[cfg(not(any(test, feature = "test-support")))]
1001 const MAX_CHUNK_SIZE: usize = 256;
1002
1003 // Stream this worktree's entries.
1004 let message = proto::UpdateWorktree {
1005 project_id: project_id.to_proto(),
1006 worktree_id: *worktree_id,
1007 abs_path: worktree.abs_path.as_os_str().as_bytes().to_vec(),
1008 root_name: worktree.root_name.clone(),
1009 updated_entries: worktree.entries.values().cloned().collect(),
1010 removed_entries: Default::default(),
1011 scan_id: worktree.scan_id,
1012 is_last_update: worktree.is_complete,
1013 };
1014 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1015 self.peer
1016 .send(request.sender_connection_id, update.clone())?;
1017 }
1018
1019 // Stream this worktree's diagnostics.
1020 for summary in worktree.diagnostic_summaries.values() {
1021 self.peer.send(
1022 request.sender_connection_id,
1023 proto::UpdateDiagnosticSummary {
1024 project_id: project_id.to_proto(),
1025 worktree_id: *worktree_id,
1026 summary: Some(summary.clone()),
1027 },
1028 )?;
1029 }
1030 }
1031
1032 for language_server in &project.language_servers {
1033 self.peer.send(
1034 request.sender_connection_id,
1035 proto::UpdateLanguageServer {
1036 project_id: project_id.to_proto(),
1037 language_server_id: language_server.id,
1038 variant: Some(
1039 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1040 proto::LspDiskBasedDiagnosticsUpdated {},
1041 ),
1042 ),
1043 },
1044 )?;
1045 }
1046
1047 Ok(())
1048 }
1049
1050 async fn leave_project(self: Arc<Server>, request: Message<proto::LeaveProject>) -> Result<()> {
1051 let sender_id = request.sender_connection_id;
1052 let project_id = ProjectId::from_proto(request.payload.project_id);
1053 let project;
1054 {
1055 let mut store = self.store().await;
1056 project = store.leave_project(project_id, sender_id)?;
1057 tracing::info!(
1058 %project_id,
1059 host_user_id = %project.host_user_id,
1060 host_connection_id = %project.host_connection_id,
1061 "leave project"
1062 );
1063
1064 if project.remove_collaborator {
1065 broadcast(sender_id, project.connection_ids, |conn_id| {
1066 self.peer.send(
1067 conn_id,
1068 proto::RemoveProjectCollaborator {
1069 project_id: project_id.to_proto(),
1070 peer_id: sender_id.0,
1071 },
1072 )
1073 });
1074 }
1075 }
1076
1077 Ok(())
1078 }
1079
1080 async fn update_project(
1081 self: Arc<Server>,
1082 request: Message<proto::UpdateProject>,
1083 response: Response<proto::UpdateProject>,
1084 ) -> Result<()> {
1085 let project_id = ProjectId::from_proto(request.payload.project_id);
1086 let (room, guest_connection_ids) = self
1087 .app_state
1088 .db
1089 .update_project(
1090 project_id,
1091 request.sender_connection_id,
1092 &request.payload.worktrees,
1093 )
1094 .await?;
1095 broadcast(
1096 request.sender_connection_id,
1097 guest_connection_ids,
1098 |connection_id| {
1099 self.peer.forward_send(
1100 request.sender_connection_id,
1101 connection_id,
1102 request.payload.clone(),
1103 )
1104 },
1105 );
1106 self.room_updated(&room);
1107 response.send(proto::Ack {})?;
1108
1109 Ok(())
1110 }
1111
1112 async fn update_worktree(
1113 self: Arc<Server>,
1114 request: Message<proto::UpdateWorktree>,
1115 response: Response<proto::UpdateWorktree>,
1116 ) -> Result<()> {
1117 let project_id = ProjectId::from_proto(request.payload.project_id);
1118 let worktree_id = request.payload.worktree_id;
1119 let connection_ids = self.store().await.update_worktree(
1120 request.sender_connection_id,
1121 project_id,
1122 worktree_id,
1123 &request.payload.root_name,
1124 &request.payload.removed_entries,
1125 &request.payload.updated_entries,
1126 request.payload.scan_id,
1127 request.payload.is_last_update,
1128 )?;
1129
1130 broadcast(
1131 request.sender_connection_id,
1132 connection_ids,
1133 |connection_id| {
1134 self.peer.forward_send(
1135 request.sender_connection_id,
1136 connection_id,
1137 request.payload.clone(),
1138 )
1139 },
1140 );
1141 response.send(proto::Ack {})?;
1142 Ok(())
1143 }
1144
1145 async fn update_diagnostic_summary(
1146 self: Arc<Server>,
1147 request: Message<proto::UpdateDiagnosticSummary>,
1148 ) -> Result<()> {
1149 let summary = request
1150 .payload
1151 .summary
1152 .clone()
1153 .ok_or_else(|| anyhow!("invalid summary"))?;
1154 let receiver_ids = self.store().await.update_diagnostic_summary(
1155 ProjectId::from_proto(request.payload.project_id),
1156 request.payload.worktree_id,
1157 request.sender_connection_id,
1158 summary,
1159 )?;
1160
1161 broadcast(
1162 request.sender_connection_id,
1163 receiver_ids,
1164 |connection_id| {
1165 self.peer.forward_send(
1166 request.sender_connection_id,
1167 connection_id,
1168 request.payload.clone(),
1169 )
1170 },
1171 );
1172 Ok(())
1173 }
1174
1175 async fn start_language_server(
1176 self: Arc<Server>,
1177 request: Message<proto::StartLanguageServer>,
1178 ) -> Result<()> {
1179 let receiver_ids = self.store().await.start_language_server(
1180 ProjectId::from_proto(request.payload.project_id),
1181 request.sender_connection_id,
1182 request
1183 .payload
1184 .server
1185 .clone()
1186 .ok_or_else(|| anyhow!("invalid language server"))?,
1187 )?;
1188 broadcast(
1189 request.sender_connection_id,
1190 receiver_ids,
1191 |connection_id| {
1192 self.peer.forward_send(
1193 request.sender_connection_id,
1194 connection_id,
1195 request.payload.clone(),
1196 )
1197 },
1198 );
1199 Ok(())
1200 }
1201
1202 async fn update_language_server(
1203 self: Arc<Server>,
1204 request: Message<proto::UpdateLanguageServer>,
1205 ) -> Result<()> {
1206 let receiver_ids = self.store().await.project_connection_ids(
1207 ProjectId::from_proto(request.payload.project_id),
1208 request.sender_connection_id,
1209 )?;
1210 broadcast(
1211 request.sender_connection_id,
1212 receiver_ids,
1213 |connection_id| {
1214 self.peer.forward_send(
1215 request.sender_connection_id,
1216 connection_id,
1217 request.payload.clone(),
1218 )
1219 },
1220 );
1221 Ok(())
1222 }
1223
1224 async fn forward_project_request<T>(
1225 self: Arc<Server>,
1226 request: Message<T>,
1227 response: Response<T>,
1228 ) -> Result<()>
1229 where
1230 T: EntityMessage + RequestMessage,
1231 {
1232 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1233 let host_connection_id = self
1234 .store()
1235 .await
1236 .read_project(project_id, request.sender_connection_id)?
1237 .host_connection_id;
1238 let payload = self
1239 .peer
1240 .forward_request(
1241 request.sender_connection_id,
1242 host_connection_id,
1243 request.payload,
1244 )
1245 .await?;
1246
1247 // Ensure project still exists by the time we get the response from the host.
1248 self.store()
1249 .await
1250 .read_project(project_id, request.sender_connection_id)?;
1251
1252 response.send(payload)?;
1253 Ok(())
1254 }
1255
1256 async fn save_buffer(
1257 self: Arc<Server>,
1258 request: Message<proto::SaveBuffer>,
1259 response: Response<proto::SaveBuffer>,
1260 ) -> Result<()> {
1261 let project_id = ProjectId::from_proto(request.payload.project_id);
1262 let host = self
1263 .store()
1264 .await
1265 .read_project(project_id, request.sender_connection_id)?
1266 .host_connection_id;
1267 let response_payload = self
1268 .peer
1269 .forward_request(request.sender_connection_id, host, request.payload.clone())
1270 .await?;
1271
1272 let mut guests = self
1273 .store()
1274 .await
1275 .read_project(project_id, request.sender_connection_id)?
1276 .connection_ids();
1277 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_connection_id);
1278 broadcast(host, guests, |conn_id| {
1279 self.peer
1280 .forward_send(host, conn_id, response_payload.clone())
1281 });
1282 response.send(response_payload)?;
1283 Ok(())
1284 }
1285
1286 async fn create_buffer_for_peer(
1287 self: Arc<Server>,
1288 request: Message<proto::CreateBufferForPeer>,
1289 ) -> Result<()> {
1290 self.peer.forward_send(
1291 request.sender_connection_id,
1292 ConnectionId(request.payload.peer_id),
1293 request.payload,
1294 )?;
1295 Ok(())
1296 }
1297
1298 async fn update_buffer(
1299 self: Arc<Server>,
1300 request: Message<proto::UpdateBuffer>,
1301 response: Response<proto::UpdateBuffer>,
1302 ) -> Result<()> {
1303 let project_id = ProjectId::from_proto(request.payload.project_id);
1304 let receiver_ids = {
1305 let store = self.store().await;
1306 store.project_connection_ids(project_id, request.sender_connection_id)?
1307 };
1308
1309 broadcast(
1310 request.sender_connection_id,
1311 receiver_ids,
1312 |connection_id| {
1313 self.peer.forward_send(
1314 request.sender_connection_id,
1315 connection_id,
1316 request.payload.clone(),
1317 )
1318 },
1319 );
1320 response.send(proto::Ack {})?;
1321 Ok(())
1322 }
1323
1324 async fn update_buffer_file(
1325 self: Arc<Server>,
1326 request: Message<proto::UpdateBufferFile>,
1327 ) -> Result<()> {
1328 let receiver_ids = self.store().await.project_connection_ids(
1329 ProjectId::from_proto(request.payload.project_id),
1330 request.sender_connection_id,
1331 )?;
1332 broadcast(
1333 request.sender_connection_id,
1334 receiver_ids,
1335 |connection_id| {
1336 self.peer.forward_send(
1337 request.sender_connection_id,
1338 connection_id,
1339 request.payload.clone(),
1340 )
1341 },
1342 );
1343 Ok(())
1344 }
1345
1346 async fn buffer_reloaded(
1347 self: Arc<Server>,
1348 request: Message<proto::BufferReloaded>,
1349 ) -> Result<()> {
1350 let receiver_ids = self.store().await.project_connection_ids(
1351 ProjectId::from_proto(request.payload.project_id),
1352 request.sender_connection_id,
1353 )?;
1354 broadcast(
1355 request.sender_connection_id,
1356 receiver_ids,
1357 |connection_id| {
1358 self.peer.forward_send(
1359 request.sender_connection_id,
1360 connection_id,
1361 request.payload.clone(),
1362 )
1363 },
1364 );
1365 Ok(())
1366 }
1367
1368 async fn buffer_saved(self: Arc<Server>, request: Message<proto::BufferSaved>) -> Result<()> {
1369 let receiver_ids = self.store().await.project_connection_ids(
1370 ProjectId::from_proto(request.payload.project_id),
1371 request.sender_connection_id,
1372 )?;
1373 broadcast(
1374 request.sender_connection_id,
1375 receiver_ids,
1376 |connection_id| {
1377 self.peer.forward_send(
1378 request.sender_connection_id,
1379 connection_id,
1380 request.payload.clone(),
1381 )
1382 },
1383 );
1384 Ok(())
1385 }
1386
1387 async fn follow(
1388 self: Arc<Self>,
1389 request: Message<proto::Follow>,
1390 response: Response<proto::Follow>,
1391 ) -> Result<()> {
1392 let project_id = ProjectId::from_proto(request.payload.project_id);
1393 let leader_id = ConnectionId(request.payload.leader_id);
1394 let follower_id = request.sender_connection_id;
1395 {
1396 let store = self.store().await;
1397 if !store
1398 .project_connection_ids(project_id, follower_id)?
1399 .contains(&leader_id)
1400 {
1401 Err(anyhow!("no such peer"))?;
1402 }
1403 }
1404
1405 let mut response_payload = self
1406 .peer
1407 .forward_request(request.sender_connection_id, leader_id, request.payload)
1408 .await?;
1409 response_payload
1410 .views
1411 .retain(|view| view.leader_id != Some(follower_id.0));
1412 response.send(response_payload)?;
1413 Ok(())
1414 }
1415
1416 async fn unfollow(self: Arc<Self>, request: Message<proto::Unfollow>) -> Result<()> {
1417 let project_id = ProjectId::from_proto(request.payload.project_id);
1418 let leader_id = ConnectionId(request.payload.leader_id);
1419 let store = self.store().await;
1420 if !store
1421 .project_connection_ids(project_id, request.sender_connection_id)?
1422 .contains(&leader_id)
1423 {
1424 Err(anyhow!("no such peer"))?;
1425 }
1426 self.peer
1427 .forward_send(request.sender_connection_id, leader_id, request.payload)?;
1428 Ok(())
1429 }
1430
1431 async fn update_followers(
1432 self: Arc<Self>,
1433 request: Message<proto::UpdateFollowers>,
1434 ) -> Result<()> {
1435 let project_id = ProjectId::from_proto(request.payload.project_id);
1436 let store = self.store().await;
1437 let connection_ids =
1438 store.project_connection_ids(project_id, request.sender_connection_id)?;
1439 let leader_id = request
1440 .payload
1441 .variant
1442 .as_ref()
1443 .and_then(|variant| match variant {
1444 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1445 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1446 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1447 });
1448 for follower_id in &request.payload.follower_ids {
1449 let follower_id = ConnectionId(*follower_id);
1450 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1451 self.peer.forward_send(
1452 request.sender_connection_id,
1453 follower_id,
1454 request.payload.clone(),
1455 )?;
1456 }
1457 }
1458 Ok(())
1459 }
1460
1461 async fn get_users(
1462 self: Arc<Server>,
1463 request: Message<proto::GetUsers>,
1464 response: Response<proto::GetUsers>,
1465 ) -> Result<()> {
1466 let user_ids = request
1467 .payload
1468 .user_ids
1469 .into_iter()
1470 .map(UserId::from_proto)
1471 .collect();
1472 let users = self
1473 .app_state
1474 .db
1475 .get_users_by_ids(user_ids)
1476 .await?
1477 .into_iter()
1478 .map(|user| proto::User {
1479 id: user.id.to_proto(),
1480 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1481 github_login: user.github_login,
1482 })
1483 .collect();
1484 response.send(proto::UsersResponse { users })?;
1485 Ok(())
1486 }
1487
1488 async fn fuzzy_search_users(
1489 self: Arc<Server>,
1490 request: Message<proto::FuzzySearchUsers>,
1491 response: Response<proto::FuzzySearchUsers>,
1492 ) -> Result<()> {
1493 let query = request.payload.query;
1494 let db = &self.app_state.db;
1495 let users = match query.len() {
1496 0 => vec![],
1497 1 | 2 => db
1498 .get_user_by_github_account(&query, None)
1499 .await?
1500 .into_iter()
1501 .collect(),
1502 _ => db.fuzzy_search_users(&query, 10).await?,
1503 };
1504 let users = users
1505 .into_iter()
1506 .filter(|user| user.id != request.sender_user_id)
1507 .map(|user| proto::User {
1508 id: user.id.to_proto(),
1509 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1510 github_login: user.github_login,
1511 })
1512 .collect();
1513 response.send(proto::UsersResponse { users })?;
1514 Ok(())
1515 }
1516
1517 async fn request_contact(
1518 self: Arc<Server>,
1519 request: Message<proto::RequestContact>,
1520 response: Response<proto::RequestContact>,
1521 ) -> Result<()> {
1522 let requester_id = request.sender_user_id;
1523 let responder_id = UserId::from_proto(request.payload.responder_id);
1524 if requester_id == responder_id {
1525 return Err(anyhow!("cannot add yourself as a contact"))?;
1526 }
1527
1528 self.app_state
1529 .db
1530 .send_contact_request(requester_id, responder_id)
1531 .await?;
1532
1533 // Update outgoing contact requests of requester
1534 let mut update = proto::UpdateContacts::default();
1535 update.outgoing_requests.push(responder_id.to_proto());
1536 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1537 self.peer.send(connection_id, update.clone())?;
1538 }
1539
1540 // Update incoming contact requests of responder
1541 let mut update = proto::UpdateContacts::default();
1542 update
1543 .incoming_requests
1544 .push(proto::IncomingContactRequest {
1545 requester_id: requester_id.to_proto(),
1546 should_notify: true,
1547 });
1548 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1549 self.peer.send(connection_id, update.clone())?;
1550 }
1551
1552 response.send(proto::Ack {})?;
1553 Ok(())
1554 }
1555
1556 async fn respond_to_contact_request(
1557 self: Arc<Server>,
1558 request: Message<proto::RespondToContactRequest>,
1559 response: Response<proto::RespondToContactRequest>,
1560 ) -> Result<()> {
1561 let responder_id = request.sender_user_id;
1562 let requester_id = UserId::from_proto(request.payload.requester_id);
1563 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1564 self.app_state
1565 .db
1566 .dismiss_contact_notification(responder_id, requester_id)
1567 .await?;
1568 } else {
1569 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1570 self.app_state
1571 .db
1572 .respond_to_contact_request(responder_id, requester_id, accept)
1573 .await?;
1574 let busy = self.app_state.db.is_user_busy(requester_id).await?;
1575
1576 let store = self.store().await;
1577 // Update responder with new contact
1578 let mut update = proto::UpdateContacts::default();
1579 if accept {
1580 update
1581 .contacts
1582 .push(store.contact_for_user(requester_id, false, busy));
1583 }
1584 update
1585 .remove_incoming_requests
1586 .push(requester_id.to_proto());
1587 for connection_id in store.connection_ids_for_user(responder_id) {
1588 self.peer.send(connection_id, update.clone())?;
1589 }
1590
1591 // Update requester with new contact
1592 let mut update = proto::UpdateContacts::default();
1593 if accept {
1594 update
1595 .contacts
1596 .push(store.contact_for_user(responder_id, true, busy));
1597 }
1598 update
1599 .remove_outgoing_requests
1600 .push(responder_id.to_proto());
1601 for connection_id in store.connection_ids_for_user(requester_id) {
1602 self.peer.send(connection_id, update.clone())?;
1603 }
1604 }
1605
1606 response.send(proto::Ack {})?;
1607 Ok(())
1608 }
1609
1610 async fn remove_contact(
1611 self: Arc<Server>,
1612 request: Message<proto::RemoveContact>,
1613 response: Response<proto::RemoveContact>,
1614 ) -> Result<()> {
1615 let requester_id = request.sender_user_id;
1616 let responder_id = UserId::from_proto(request.payload.user_id);
1617 self.app_state
1618 .db
1619 .remove_contact(requester_id, responder_id)
1620 .await?;
1621
1622 // Update outgoing contact requests of requester
1623 let mut update = proto::UpdateContacts::default();
1624 update
1625 .remove_outgoing_requests
1626 .push(responder_id.to_proto());
1627 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1628 self.peer.send(connection_id, update.clone())?;
1629 }
1630
1631 // Update incoming contact requests of responder
1632 let mut update = proto::UpdateContacts::default();
1633 update
1634 .remove_incoming_requests
1635 .push(requester_id.to_proto());
1636 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1637 self.peer.send(connection_id, update.clone())?;
1638 }
1639
1640 response.send(proto::Ack {})?;
1641 Ok(())
1642 }
1643
1644 async fn update_diff_base(
1645 self: Arc<Server>,
1646 request: Message<proto::UpdateDiffBase>,
1647 ) -> Result<()> {
1648 let receiver_ids = self.store().await.project_connection_ids(
1649 ProjectId::from_proto(request.payload.project_id),
1650 request.sender_connection_id,
1651 )?;
1652 broadcast(
1653 request.sender_connection_id,
1654 receiver_ids,
1655 |connection_id| {
1656 self.peer.forward_send(
1657 request.sender_connection_id,
1658 connection_id,
1659 request.payload.clone(),
1660 )
1661 },
1662 );
1663 Ok(())
1664 }
1665
1666 async fn get_private_user_info(
1667 self: Arc<Self>,
1668 request: Message<proto::GetPrivateUserInfo>,
1669 response: Response<proto::GetPrivateUserInfo>,
1670 ) -> Result<()> {
1671 let metrics_id = self
1672 .app_state
1673 .db
1674 .get_user_metrics_id(request.sender_user_id)
1675 .await?;
1676 let user = self
1677 .app_state
1678 .db
1679 .get_user_by_id(request.sender_user_id)
1680 .await?
1681 .ok_or_else(|| anyhow!("user not found"))?;
1682 response.send(proto::GetPrivateUserInfoResponse {
1683 metrics_id,
1684 staff: user.admin,
1685 })?;
1686 Ok(())
1687 }
1688
1689 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1690 #[cfg(test)]
1691 tokio::task::yield_now().await;
1692 let guard = self.store.lock().await;
1693 #[cfg(test)]
1694 tokio::task::yield_now().await;
1695 StoreGuard {
1696 guard,
1697 _not_send: PhantomData,
1698 }
1699 }
1700
1701 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1702 ServerSnapshot {
1703 store: self.store().await,
1704 peer: &self.peer,
1705 }
1706 }
1707}
1708
1709impl<'a> Deref for StoreGuard<'a> {
1710 type Target = Store;
1711
1712 fn deref(&self) -> &Self::Target {
1713 &*self.guard
1714 }
1715}
1716
1717impl<'a> DerefMut for StoreGuard<'a> {
1718 fn deref_mut(&mut self) -> &mut Self::Target {
1719 &mut *self.guard
1720 }
1721}
1722
1723impl<'a> Drop for StoreGuard<'a> {
1724 fn drop(&mut self) {
1725 #[cfg(test)]
1726 self.check_invariants();
1727 }
1728}
1729
1730impl Executor for RealExecutor {
1731 type Sleep = Sleep;
1732
1733 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1734 tokio::task::spawn(future);
1735 }
1736
1737 fn sleep(&self, duration: Duration) -> Self::Sleep {
1738 tokio::time::sleep(duration)
1739 }
1740}
1741
1742fn broadcast<F>(
1743 sender_id: ConnectionId,
1744 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1745 mut f: F,
1746) where
1747 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1748{
1749 for receiver_id in receiver_ids {
1750 if receiver_id != sender_id {
1751 f(receiver_id).trace_err();
1752 }
1753 }
1754}
1755
1756lazy_static! {
1757 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1758}
1759
1760pub struct ProtocolVersion(u32);
1761
1762impl Header for ProtocolVersion {
1763 fn name() -> &'static HeaderName {
1764 &ZED_PROTOCOL_VERSION
1765 }
1766
1767 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1768 where
1769 Self: Sized,
1770 I: Iterator<Item = &'i axum::http::HeaderValue>,
1771 {
1772 let version = values
1773 .next()
1774 .ok_or_else(axum::headers::Error::invalid)?
1775 .to_str()
1776 .map_err(|_| axum::headers::Error::invalid())?
1777 .parse()
1778 .map_err(|_| axum::headers::Error::invalid())?;
1779 Ok(Self(version))
1780 }
1781
1782 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1783 values.extend([self.0.to_string().parse().unwrap()]);
1784 }
1785}
1786
1787pub fn routes(server: Arc<Server>) -> Router<Body> {
1788 Router::new()
1789 .route("/rpc", get(handle_websocket_request))
1790 .layer(
1791 ServiceBuilder::new()
1792 .layer(Extension(server.app_state.clone()))
1793 .layer(middleware::from_fn(auth::validate_header)),
1794 )
1795 .route("/metrics", get(handle_metrics))
1796 .layer(Extension(server))
1797}
1798
1799pub async fn handle_websocket_request(
1800 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1801 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1802 Extension(server): Extension<Arc<Server>>,
1803 Extension(user): Extension<User>,
1804 ws: WebSocketUpgrade,
1805) -> axum::response::Response {
1806 if protocol_version != rpc::PROTOCOL_VERSION {
1807 return (
1808 StatusCode::UPGRADE_REQUIRED,
1809 "client must be upgraded".to_string(),
1810 )
1811 .into_response();
1812 }
1813 let socket_address = socket_address.to_string();
1814 ws.on_upgrade(move |socket| {
1815 use util::ResultExt;
1816 let socket = socket
1817 .map_ok(to_tungstenite_message)
1818 .err_into()
1819 .with(|message| async move { Ok(to_axum_message(message)) });
1820 let connection = Connection::new(Box::pin(socket));
1821 async move {
1822 server
1823 .handle_connection(connection, socket_address, user, None, RealExecutor)
1824 .await
1825 .log_err();
1826 }
1827 })
1828}
1829
1830pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1831 let metrics = server.store().await.metrics();
1832 METRIC_CONNECTIONS.set(metrics.connections as _);
1833 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1834
1835 let encoder = prometheus::TextEncoder::new();
1836 let metric_families = prometheus::gather();
1837 match encoder.encode_to_string(&metric_families) {
1838 Ok(string) => (StatusCode::OK, string).into_response(),
1839 Err(error) => (
1840 StatusCode::INTERNAL_SERVER_ERROR,
1841 format!("failed to encode metrics {:?}", error),
1842 )
1843 .into_response(),
1844 }
1845}
1846
1847fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1848 match message {
1849 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1850 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1851 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1852 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1853 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1854 code: frame.code.into(),
1855 reason: frame.reason,
1856 })),
1857 }
1858}
1859
1860fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1861 match message {
1862 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1863 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1864 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1865 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1866 AxumMessage::Close(frame) => {
1867 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1868 code: frame.code.into(),
1869 reason: frame.reason,
1870 }))
1871 }
1872 }
1873}
1874
1875pub trait ResultExt {
1876 type Ok;
1877
1878 fn trace_err(self) -> Option<Self::Ok>;
1879}
1880
1881impl<T, E> ResultExt for Result<T, E>
1882where
1883 E: std::fmt::Debug,
1884{
1885 type Ok = T;
1886
1887 fn trace_err(self) -> Option<T> {
1888 match self {
1889 Ok(value) => Some(value),
1890 Err(error) => {
1891 tracing::error!("{:?}", error);
1892 None
1893 }
1894 }
1895 }
1896}