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