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 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 =
72 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
73
74struct Response<R> {
75 server: Arc<Server>,
76 receipt: Receipt<R>,
77 responded: Arc<AtomicBool>,
78}
79
80impl<R: RequestMessage> Response<R> {
81 fn send(self, payload: R::Response) -> Result<()> {
82 self.responded.store(true, SeqCst);
83 self.server.peer.respond(self.receipt, payload)?;
84 Ok(())
85 }
86}
87
88pub struct Server {
89 peer: Arc<Peer>,
90 pub(crate) store: Mutex<Store>,
91 app_state: Arc<AppState>,
92 handlers: HashMap<TypeId, MessageHandler>,
93}
94
95pub trait Executor: Send + Clone {
96 type Sleep: Send + Future;
97 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
98 fn sleep(&self, duration: Duration) -> Self::Sleep;
99}
100
101#[derive(Clone)]
102pub struct RealExecutor;
103
104pub(crate) struct StoreGuard<'a> {
105 guard: MutexGuard<'a, Store>,
106 _not_send: PhantomData<Rc<()>>,
107}
108
109#[derive(Serialize)]
110pub struct ServerSnapshot<'a> {
111 peer: &'a Peer,
112 #[serde(serialize_with = "serialize_deref")]
113 store: StoreGuard<'a>,
114}
115
116pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
117where
118 S: Serializer,
119 T: Deref<Target = U>,
120 U: Serialize,
121{
122 Serialize::serialize(value.deref(), serializer)
123}
124
125impl Server {
126 pub fn new(app_state: Arc<AppState>) -> Arc<Self> {
127 let mut server = Self {
128 peer: Peer::new(),
129 app_state,
130 store: Default::default(),
131 handlers: Default::default(),
132 };
133
134 server
135 .add_request_handler(Server::ping)
136 .add_request_handler(Server::create_room)
137 .add_request_handler(Server::join_room)
138 .add_message_handler(Server::leave_room)
139 .add_request_handler(Server::call)
140 .add_request_handler(Server::cancel_call)
141 .add_message_handler(Server::decline_call)
142 .add_request_handler(Server::update_participant_location)
143 .add_request_handler(Server::share_project)
144 .add_message_handler(Server::unshare_project)
145 .add_request_handler(Server::join_project)
146 .add_message_handler(Server::leave_project)
147 .add_message_handler(Server::update_project)
148 .add_request_handler(Server::update_worktree)
149 .add_message_handler(Server::start_language_server)
150 .add_message_handler(Server::update_language_server)
151 .add_message_handler(Server::update_diagnostic_summary)
152 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
153 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
154 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
155 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
156 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
157 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
158 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
159 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
160 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
161 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
162 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
163 .add_request_handler(
164 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
165 )
166 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
167 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
168 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
169 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
170 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
171 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
172 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
173 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
174 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
175 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
176 .add_message_handler(Server::create_buffer_for_peer)
177 .add_request_handler(Server::update_buffer)
178 .add_message_handler(Server::update_buffer_file)
179 .add_message_handler(Server::buffer_reloaded)
180 .add_message_handler(Server::buffer_saved)
181 .add_request_handler(Server::save_buffer)
182 .add_request_handler(Server::get_users)
183 .add_request_handler(Server::fuzzy_search_users)
184 .add_request_handler(Server::request_contact)
185 .add_request_handler(Server::remove_contact)
186 .add_request_handler(Server::respond_to_contact_request)
187 .add_request_handler(Server::follow)
188 .add_message_handler(Server::unfollow)
189 .add_message_handler(Server::update_followers)
190 .add_message_handler(Server::update_diff_base)
191 .add_request_handler(Server::get_private_user_info);
192
193 Arc::new(server)
194 }
195
196 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
197 where
198 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
199 Fut: 'static + Send + Future<Output = Result<()>>,
200 M: EnvelopedMessage,
201 {
202 let prev_handler = self.handlers.insert(
203 TypeId::of::<M>(),
204 Box::new(move |server, envelope| {
205 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
206 let span = info_span!(
207 "handle message",
208 payload_type = envelope.payload_type_name()
209 );
210 span.in_scope(|| {
211 tracing::info!(
212 payload_type = envelope.payload_type_name(),
213 "message received"
214 );
215 });
216 let future = (handler)(server, *envelope);
217 async move {
218 if let Err(error) = future.await {
219 tracing::error!(%error, "error handling message");
220 }
221 }
222 .instrument(span)
223 .boxed()
224 }),
225 );
226 if prev_handler.is_some() {
227 panic!("registered a handler for the same message twice");
228 }
229 self
230 }
231
232 /// Handle a request while holding a lock to the store. This is useful when we're registering
233 /// a connection but we want to respond on the connection before anybody else can send on it.
234 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
235 where
236 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
237 Fut: Send + Future<Output = Result<()>>,
238 M: RequestMessage,
239 {
240 let handler = Arc::new(handler);
241 self.add_message_handler(move |server, envelope| {
242 let receipt = envelope.receipt();
243 let handler = handler.clone();
244 async move {
245 let responded = Arc::new(AtomicBool::default());
246 let response = Response {
247 server: server.clone(),
248 responded: responded.clone(),
249 receipt: envelope.receipt(),
250 };
251 match (handler)(server.clone(), envelope, response).await {
252 Ok(()) => {
253 if responded.load(std::sync::atomic::Ordering::SeqCst) {
254 Ok(())
255 } else {
256 Err(anyhow!("handler did not send a response"))?
257 }
258 }
259 Err(error) => {
260 server.peer.respond_with_error(
261 receipt,
262 proto::Error {
263 message: error.to_string(),
264 },
265 )?;
266 Err(error)
267 }
268 }
269 }
270 })
271 }
272
273 pub fn handle_connection<E: Executor>(
274 self: &Arc<Self>,
275 connection: Connection,
276 address: String,
277 user: User,
278 mut send_connection_id: Option<oneshot::Sender<ConnectionId>>,
279 executor: E,
280 ) -> impl Future<Output = Result<()>> {
281 let mut this = self.clone();
282 let user_id = user.id;
283 let login = user.github_login;
284 let span = info_span!("handle connection", %user_id, %login, %address);
285 async move {
286 let (connection_id, handle_io, mut incoming_rx) = this
287 .peer
288 .add_connection(connection, {
289 let executor = executor.clone();
290 move |duration| {
291 let timer = executor.sleep(duration);
292 async move {
293 timer.await;
294 }
295 }
296 });
297
298 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
299 this.peer.send(connection_id, proto::Hello { peer_id: connection_id.0 })?;
300 tracing::info!(%user_id, %login, %connection_id, %address, "sent hello message");
301
302 if let Some(send_connection_id) = send_connection_id.take() {
303 let _ = send_connection_id.send(connection_id);
304 }
305
306 if !user.connected_once {
307 this.peer.send(connection_id, proto::ShowContacts {})?;
308 this.app_state.db.set_user_connected_once(user_id, true).await?;
309 }
310
311 let (contacts, invite_code) = future::try_join(
312 this.app_state.db.get_contacts(user_id),
313 this.app_state.db.get_invite_code_for_user(user_id)
314 ).await?;
315
316 {
317 let mut store = this.store().await;
318 let incoming_call = store.add_connection(connection_id, user_id, user.admin);
319 if let Some(incoming_call) = incoming_call {
320 this.peer.send(connection_id, incoming_call)?;
321 }
322
323 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
324
325 if let Some((code, count)) = invite_code {
326 this.peer.send(connection_id, proto::UpdateInviteInfo {
327 url: format!("{}{}", this.app_state.config.invite_link_prefix, code),
328 count,
329 })?;
330 }
331 }
332 this.update_user_contacts(user_id).await?;
333
334 let handle_io = handle_io.fuse();
335 futures::pin_mut!(handle_io);
336
337 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
338 // This prevents deadlocks when e.g., client A performs a request to client B and
339 // client B performs a request to client A. If both clients stop processing further
340 // messages until their respective request completes, they won't have a chance to
341 // respond to the other client's request and cause a deadlock.
342 //
343 // This arrangement ensures we will attempt to process earlier messages first, but fall
344 // back to processing messages arrived later in the spirit of making progress.
345 let mut foreground_message_handlers = FuturesUnordered::new();
346 loop {
347 let next_message = incoming_rx.next().fuse();
348 futures::pin_mut!(next_message);
349 futures::select_biased! {
350 result = handle_io => {
351 if let Err(error) = result {
352 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
353 }
354 break;
355 }
356 _ = foreground_message_handlers.next() => {}
357 message = next_message => {
358 if let Some(message) = message {
359 let type_name = message.payload_type_name();
360 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
361 let span_enter = span.enter();
362 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
363 let is_background = message.is_background();
364 let handle_message = (handler)(this.clone(), message);
365 drop(span_enter);
366
367 let handle_message = handle_message.instrument(span);
368 if is_background {
369 executor.spawn_detached(handle_message);
370 } else {
371 foreground_message_handlers.push(handle_message);
372 }
373 } else {
374 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
375 }
376 } else {
377 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
378 break;
379 }
380 }
381 }
382 }
383
384 drop(foreground_message_handlers);
385 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
386 if let Err(error) = this.sign_out(connection_id).await {
387 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
388 }
389
390 Ok(())
391 }.instrument(span)
392 }
393
394 #[instrument(skip(self), err)]
395 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
396 self.peer.disconnect(connection_id);
397
398 let mut projects_to_unshare = Vec::new();
399 let mut contacts_to_update = HashSet::default();
400 let mut room_left = None;
401 {
402 let mut store = self.store().await;
403
404 #[cfg(test)]
405 let removed_connection = store.remove_connection(connection_id).unwrap();
406 #[cfg(not(test))]
407 let removed_connection = store.remove_connection(connection_id)?;
408
409 for project in removed_connection.hosted_projects {
410 projects_to_unshare.push(project.id);
411 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
412 self.peer.send(
413 conn_id,
414 proto::UnshareProject {
415 project_id: project.id.to_proto(),
416 },
417 )
418 });
419 }
420
421 for project in removed_connection.guest_projects {
422 broadcast(connection_id, project.connection_ids, |conn_id| {
423 self.peer.send(
424 conn_id,
425 proto::RemoveProjectCollaborator {
426 project_id: project.id.to_proto(),
427 peer_id: connection_id.0,
428 },
429 )
430 });
431 }
432
433 if let Some(room) = removed_connection.room {
434 self.room_updated(&room);
435 room_left = Some(self.room_left(&room, connection_id));
436 }
437
438 contacts_to_update.insert(removed_connection.user_id);
439 for connection_id in removed_connection.canceled_call_connection_ids {
440 self.peer
441 .send(connection_id, proto::CallCanceled {})
442 .trace_err();
443 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
444 }
445 };
446
447 if let Some(room_left) = room_left {
448 room_left.await.trace_err();
449 }
450
451 for user_id in contacts_to_update {
452 self.update_user_contacts(user_id).await.trace_err();
453 }
454
455 for project_id in projects_to_unshare {
456 self.app_state
457 .db
458 .unregister_project(project_id)
459 .await
460 .trace_err();
461 }
462
463 Ok(())
464 }
465
466 pub async fn invite_code_redeemed(
467 self: &Arc<Self>,
468 inviter_id: UserId,
469 invitee_id: UserId,
470 ) -> Result<()> {
471 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
472 if let Some(code) = &user.invite_code {
473 let store = self.store().await;
474 let invitee_contact = store.contact_for_user(invitee_id, true);
475 for connection_id in store.connection_ids_for_user(inviter_id) {
476 self.peer.send(
477 connection_id,
478 proto::UpdateContacts {
479 contacts: vec![invitee_contact.clone()],
480 ..Default::default()
481 },
482 )?;
483 self.peer.send(
484 connection_id,
485 proto::UpdateInviteInfo {
486 url: format!("{}{}", self.app_state.config.invite_link_prefix, &code),
487 count: user.invite_count as u32,
488 },
489 )?;
490 }
491 }
492 }
493 Ok(())
494 }
495
496 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
497 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
498 if let Some(invite_code) = &user.invite_code {
499 let store = self.store().await;
500 for connection_id in store.connection_ids_for_user(user_id) {
501 self.peer.send(
502 connection_id,
503 proto::UpdateInviteInfo {
504 url: format!(
505 "{}{}",
506 self.app_state.config.invite_link_prefix, invite_code
507 ),
508 count: user.invite_count as u32,
509 },
510 )?;
511 }
512 }
513 }
514 Ok(())
515 }
516
517 async fn ping(
518 self: Arc<Server>,
519 _: TypedEnvelope<proto::Ping>,
520 response: Response<proto::Ping>,
521 ) -> Result<()> {
522 response.send(proto::Ack {})?;
523 Ok(())
524 }
525
526 async fn create_room(
527 self: Arc<Server>,
528 request: TypedEnvelope<proto::CreateRoom>,
529 response: Response<proto::CreateRoom>,
530 ) -> Result<()> {
531 let user_id;
532 let room;
533 {
534 let mut store = self.store().await;
535 user_id = store.user_id_for_connection(request.sender_id)?;
536 room = store.create_room(request.sender_id)?.clone();
537 }
538
539 let live_kit_connection_info =
540 if let Some(live_kit) = self.app_state.live_kit_client.as_ref() {
541 if let Some(_) = live_kit
542 .create_room(room.live_kit_room.clone())
543 .await
544 .trace_err()
545 {
546 if let Some(token) = live_kit
547 .room_token(&room.live_kit_room, &request.sender_id.to_string())
548 .trace_err()
549 {
550 Some(proto::LiveKitConnectionInfo {
551 server_url: live_kit.url().into(),
552 token,
553 })
554 } else {
555 None
556 }
557 } else {
558 None
559 }
560 } else {
561 None
562 };
563
564 response.send(proto::CreateRoomResponse {
565 room: Some(room),
566 live_kit_connection_info,
567 })?;
568 self.update_user_contacts(user_id).await?;
569 Ok(())
570 }
571
572 async fn join_room(
573 self: Arc<Server>,
574 request: TypedEnvelope<proto::JoinRoom>,
575 response: Response<proto::JoinRoom>,
576 ) -> Result<()> {
577 let user_id;
578 {
579 let mut store = self.store().await;
580 user_id = store.user_id_for_connection(request.sender_id)?;
581 let (room, recipient_connection_ids) =
582 store.join_room(request.payload.id, request.sender_id)?;
583 for recipient_id in recipient_connection_ids {
584 self.peer
585 .send(recipient_id, proto::CallCanceled {})
586 .trace_err();
587 }
588
589 let live_kit_connection_info =
590 if let Some(live_kit) = self.app_state.live_kit_client.as_ref() {
591 if let Some(token) = live_kit
592 .room_token(&room.live_kit_room, &request.sender_id.to_string())
593 .trace_err()
594 {
595 Some(proto::LiveKitConnectionInfo {
596 server_url: live_kit.url().into(),
597 token,
598 })
599 } else {
600 None
601 }
602 } else {
603 None
604 };
605
606 response.send(proto::JoinRoomResponse {
607 room: Some(room.clone()),
608 live_kit_connection_info,
609 })?;
610 self.room_updated(room);
611 }
612 self.update_user_contacts(user_id).await?;
613 Ok(())
614 }
615
616 async fn leave_room(self: Arc<Server>, message: TypedEnvelope<proto::LeaveRoom>) -> Result<()> {
617 let mut contacts_to_update = HashSet::default();
618 let room_left;
619 {
620 let mut store = self.store().await;
621 let user_id = store.user_id_for_connection(message.sender_id)?;
622 let left_room = store.leave_room(message.payload.id, message.sender_id)?;
623 contacts_to_update.insert(user_id);
624
625 for project in left_room.unshared_projects {
626 for connection_id in project.connection_ids() {
627 self.peer.send(
628 connection_id,
629 proto::UnshareProject {
630 project_id: project.id.to_proto(),
631 },
632 )?;
633 }
634 }
635
636 for project in left_room.left_projects {
637 if project.remove_collaborator {
638 for connection_id in project.connection_ids {
639 self.peer.send(
640 connection_id,
641 proto::RemoveProjectCollaborator {
642 project_id: project.id.to_proto(),
643 peer_id: message.sender_id.0,
644 },
645 )?;
646 }
647
648 self.peer.send(
649 message.sender_id,
650 proto::UnshareProject {
651 project_id: project.id.to_proto(),
652 },
653 )?;
654 }
655 }
656
657 self.room_updated(&left_room.room);
658 room_left = self.room_left(&left_room.room, message.sender_id);
659
660 for connection_id in left_room.canceled_call_connection_ids {
661 self.peer
662 .send(connection_id, proto::CallCanceled {})
663 .trace_err();
664 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
665 }
666 }
667
668 room_left.await.trace_err();
669 for user_id in contacts_to_update {
670 self.update_user_contacts(user_id).await?;
671 }
672
673 Ok(())
674 }
675
676 async fn call(
677 self: Arc<Server>,
678 request: TypedEnvelope<proto::Call>,
679 response: Response<proto::Call>,
680 ) -> Result<()> {
681 let caller_user_id = self
682 .store()
683 .await
684 .user_id_for_connection(request.sender_id)?;
685 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
686 let initial_project_id = request
687 .payload
688 .initial_project_id
689 .map(ProjectId::from_proto);
690 if !self
691 .app_state
692 .db
693 .has_contact(caller_user_id, recipient_user_id)
694 .await?
695 {
696 return Err(anyhow!("cannot call a user who isn't a contact"))?;
697 }
698
699 let room_id = request.payload.room_id;
700 let mut calls = {
701 let mut store = self.store().await;
702 let (room, recipient_connection_ids, incoming_call) = store.call(
703 room_id,
704 recipient_user_id,
705 initial_project_id,
706 request.sender_id,
707 )?;
708 self.room_updated(room);
709 recipient_connection_ids
710 .into_iter()
711 .map(|recipient_connection_id| {
712 self.peer
713 .request(recipient_connection_id, incoming_call.clone())
714 })
715 .collect::<FuturesUnordered<_>>()
716 };
717 self.update_user_contacts(recipient_user_id).await?;
718
719 while let Some(call_response) = calls.next().await {
720 match call_response.as_ref() {
721 Ok(_) => {
722 response.send(proto::Ack {})?;
723 return Ok(());
724 }
725 Err(_) => {
726 call_response.trace_err();
727 }
728 }
729 }
730
731 {
732 let mut store = self.store().await;
733 let room = store.call_failed(room_id, recipient_user_id)?;
734 self.room_updated(&room);
735 }
736 self.update_user_contacts(recipient_user_id).await?;
737
738 Err(anyhow!("failed to ring call recipient"))?
739 }
740
741 async fn cancel_call(
742 self: Arc<Server>,
743 request: TypedEnvelope<proto::CancelCall>,
744 response: Response<proto::CancelCall>,
745 ) -> Result<()> {
746 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
747 {
748 let mut store = self.store().await;
749 let (room, recipient_connection_ids) = store.cancel_call(
750 request.payload.room_id,
751 recipient_user_id,
752 request.sender_id,
753 )?;
754 for recipient_id in recipient_connection_ids {
755 self.peer
756 .send(recipient_id, proto::CallCanceled {})
757 .trace_err();
758 }
759 self.room_updated(room);
760 response.send(proto::Ack {})?;
761 }
762 self.update_user_contacts(recipient_user_id).await?;
763 Ok(())
764 }
765
766 async fn decline_call(
767 self: Arc<Server>,
768 message: TypedEnvelope<proto::DeclineCall>,
769 ) -> Result<()> {
770 let recipient_user_id;
771 {
772 let mut store = self.store().await;
773 recipient_user_id = store.user_id_for_connection(message.sender_id)?;
774 let (room, recipient_connection_ids) =
775 store.decline_call(message.payload.room_id, message.sender_id)?;
776 for recipient_id in recipient_connection_ids {
777 self.peer
778 .send(recipient_id, proto::CallCanceled {})
779 .trace_err();
780 }
781 self.room_updated(room);
782 }
783 self.update_user_contacts(recipient_user_id).await?;
784 Ok(())
785 }
786
787 async fn update_participant_location(
788 self: Arc<Server>,
789 request: TypedEnvelope<proto::UpdateParticipantLocation>,
790 response: Response<proto::UpdateParticipantLocation>,
791 ) -> Result<()> {
792 let room_id = request.payload.room_id;
793 let location = request
794 .payload
795 .location
796 .ok_or_else(|| anyhow!("invalid location"))?;
797 let mut store = self.store().await;
798 let room = store.update_participant_location(room_id, location, request.sender_id)?;
799 self.room_updated(room);
800 response.send(proto::Ack {})?;
801 Ok(())
802 }
803
804 fn room_updated(&self, room: &proto::Room) {
805 for participant in &room.participants {
806 self.peer
807 .send(
808 ConnectionId(participant.peer_id),
809 proto::RoomUpdated {
810 room: Some(room.clone()),
811 },
812 )
813 .trace_err();
814 }
815 }
816
817 fn room_left(
818 &self,
819 room: &proto::Room,
820 connection_id: ConnectionId,
821 ) -> impl Future<Output = Result<()>> {
822 let client = self.app_state.live_kit_client.clone();
823 let room_name = room.live_kit_room.clone();
824 let participant_count = room.participants.len();
825 async move {
826 if let Some(client) = client {
827 client
828 .remove_participant(room_name.clone(), connection_id.to_string())
829 .await?;
830
831 if participant_count == 0 {
832 client.delete_room(room_name).await?;
833 }
834 }
835
836 Ok(())
837 }
838 }
839
840 async fn share_project(
841 self: Arc<Server>,
842 request: TypedEnvelope<proto::ShareProject>,
843 response: Response<proto::ShareProject>,
844 ) -> Result<()> {
845 let user_id = self
846 .store()
847 .await
848 .user_id_for_connection(request.sender_id)?;
849 let project_id = self.app_state.db.register_project(user_id).await?;
850 let mut store = self.store().await;
851 let room = store.share_project(
852 request.payload.room_id,
853 project_id,
854 request.payload.worktrees,
855 request.sender_id,
856 )?;
857 response.send(proto::ShareProjectResponse {
858 project_id: project_id.to_proto(),
859 })?;
860 self.room_updated(room);
861
862 Ok(())
863 }
864
865 async fn unshare_project(
866 self: Arc<Server>,
867 message: TypedEnvelope<proto::UnshareProject>,
868 ) -> Result<()> {
869 let project_id = ProjectId::from_proto(message.payload.project_id);
870 let mut store = self.store().await;
871 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
872 broadcast(
873 message.sender_id,
874 project.guest_connection_ids(),
875 |conn_id| self.peer.send(conn_id, message.payload.clone()),
876 );
877 self.room_updated(room);
878
879 Ok(())
880 }
881
882 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
883 let contacts = self.app_state.db.get_contacts(user_id).await?;
884 let store = self.store().await;
885 let updated_contact = store.contact_for_user(user_id, false);
886 for contact in contacts {
887 if let db::Contact::Accepted {
888 user_id: contact_user_id,
889 ..
890 } = contact
891 {
892 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
893 self.peer
894 .send(
895 contact_conn_id,
896 proto::UpdateContacts {
897 contacts: vec![updated_contact.clone()],
898 remove_contacts: Default::default(),
899 incoming_requests: Default::default(),
900 remove_incoming_requests: Default::default(),
901 outgoing_requests: Default::default(),
902 remove_outgoing_requests: Default::default(),
903 },
904 )
905 .trace_err();
906 }
907 }
908 }
909 Ok(())
910 }
911
912 async fn join_project(
913 self: Arc<Server>,
914 request: TypedEnvelope<proto::JoinProject>,
915 response: Response<proto::JoinProject>,
916 ) -> Result<()> {
917 let project_id = ProjectId::from_proto(request.payload.project_id);
918
919 let host_user_id;
920 let guest_user_id;
921 let host_connection_id;
922 {
923 let state = self.store().await;
924 let project = state.project(project_id)?;
925 host_user_id = project.host.user_id;
926 host_connection_id = project.host_connection_id;
927 guest_user_id = state.user_id_for_connection(request.sender_id)?;
928 };
929
930 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
931
932 let mut store = self.store().await;
933 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
934 let peer_count = project.guests.len();
935 let mut collaborators = Vec::with_capacity(peer_count);
936 collaborators.push(proto::Collaborator {
937 peer_id: project.host_connection_id.0,
938 replica_id: 0,
939 user_id: project.host.user_id.to_proto(),
940 });
941 let worktrees = project
942 .worktrees
943 .iter()
944 .map(|(id, worktree)| proto::WorktreeMetadata {
945 id: *id,
946 root_name: worktree.root_name.clone(),
947 visible: worktree.visible,
948 abs_path: worktree.abs_path.as_os_str().as_bytes().to_vec(),
949 })
950 .collect::<Vec<_>>();
951
952 // Add all guests other than the requesting user's own connections as collaborators
953 for (guest_conn_id, guest) in &project.guests {
954 if request.sender_id != *guest_conn_id {
955 collaborators.push(proto::Collaborator {
956 peer_id: guest_conn_id.0,
957 replica_id: guest.replica_id as u32,
958 user_id: guest.user_id.to_proto(),
959 });
960 }
961 }
962
963 for conn_id in project.connection_ids() {
964 if conn_id != request.sender_id {
965 self.peer
966 .send(
967 conn_id,
968 proto::AddProjectCollaborator {
969 project_id: project_id.to_proto(),
970 collaborator: Some(proto::Collaborator {
971 peer_id: request.sender_id.0,
972 replica_id: replica_id as u32,
973 user_id: guest_user_id.to_proto(),
974 }),
975 },
976 )
977 .trace_err();
978 }
979 }
980
981 // First, we send the metadata associated with each worktree.
982 response.send(proto::JoinProjectResponse {
983 worktrees: worktrees.clone(),
984 replica_id: replica_id as u32,
985 collaborators: collaborators.clone(),
986 language_servers: project.language_servers.clone(),
987 })?;
988
989 for (worktree_id, worktree) in &project.worktrees {
990 #[cfg(any(test, feature = "test-support"))]
991 const MAX_CHUNK_SIZE: usize = 2;
992 #[cfg(not(any(test, feature = "test-support")))]
993 const MAX_CHUNK_SIZE: usize = 256;
994
995 // Stream this worktree's entries.
996 let message = proto::UpdateWorktree {
997 project_id: project_id.to_proto(),
998 worktree_id: *worktree_id,
999 abs_path: worktree.abs_path.as_os_str().as_bytes().to_vec(),
1000 root_name: worktree.root_name.clone(),
1001 updated_entries: worktree.entries.values().cloned().collect(),
1002 removed_entries: Default::default(),
1003 scan_id: worktree.scan_id,
1004 is_last_update: worktree.is_complete,
1005 };
1006 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1007 self.peer.send(request.sender_id, update.clone())?;
1008 }
1009
1010 // Stream this worktree's diagnostics.
1011 for summary in worktree.diagnostic_summaries.values() {
1012 self.peer.send(
1013 request.sender_id,
1014 proto::UpdateDiagnosticSummary {
1015 project_id: project_id.to_proto(),
1016 worktree_id: *worktree_id,
1017 summary: Some(summary.clone()),
1018 },
1019 )?;
1020 }
1021 }
1022
1023 for language_server in &project.language_servers {
1024 self.peer.send(
1025 request.sender_id,
1026 proto::UpdateLanguageServer {
1027 project_id: project_id.to_proto(),
1028 language_server_id: language_server.id,
1029 variant: Some(
1030 proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1031 proto::LspDiskBasedDiagnosticsUpdated {},
1032 ),
1033 ),
1034 },
1035 )?;
1036 }
1037
1038 Ok(())
1039 }
1040
1041 async fn leave_project(
1042 self: Arc<Server>,
1043 request: TypedEnvelope<proto::LeaveProject>,
1044 ) -> Result<()> {
1045 let sender_id = request.sender_id;
1046 let project_id = ProjectId::from_proto(request.payload.project_id);
1047 let project;
1048 {
1049 let mut store = self.store().await;
1050 project = store.leave_project(project_id, sender_id)?;
1051 tracing::info!(
1052 %project_id,
1053 host_user_id = %project.host_user_id,
1054 host_connection_id = %project.host_connection_id,
1055 "leave project"
1056 );
1057
1058 if project.remove_collaborator {
1059 broadcast(sender_id, project.connection_ids, |conn_id| {
1060 self.peer.send(
1061 conn_id,
1062 proto::RemoveProjectCollaborator {
1063 project_id: project_id.to_proto(),
1064 peer_id: sender_id.0,
1065 },
1066 )
1067 });
1068 }
1069 }
1070
1071 Ok(())
1072 }
1073
1074 async fn update_project(
1075 self: Arc<Server>,
1076 request: TypedEnvelope<proto::UpdateProject>,
1077 ) -> Result<()> {
1078 let project_id = ProjectId::from_proto(request.payload.project_id);
1079 {
1080 let mut state = self.store().await;
1081 let guest_connection_ids = state
1082 .read_project(project_id, request.sender_id)?
1083 .guest_connection_ids();
1084 let room =
1085 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
1086 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1087 self.peer
1088 .forward_send(request.sender_id, connection_id, request.payload.clone())
1089 });
1090 self.room_updated(room);
1091 };
1092
1093 Ok(())
1094 }
1095
1096 async fn update_worktree(
1097 self: Arc<Server>,
1098 request: TypedEnvelope<proto::UpdateWorktree>,
1099 response: Response<proto::UpdateWorktree>,
1100 ) -> Result<()> {
1101 let project_id = ProjectId::from_proto(request.payload.project_id);
1102 let worktree_id = request.payload.worktree_id;
1103 let connection_ids = self.store().await.update_worktree(
1104 request.sender_id,
1105 project_id,
1106 worktree_id,
1107 &request.payload.root_name,
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}