1mod store;
2
3use crate::{
4 auth,
5 db::{self, ChannelId, MessageId, 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::mpsc,
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};
52use time::OffsetDateTime;
53use tokio::{
54 sync::{Mutex, MutexGuard},
55 time::Sleep,
56};
57use tower::ServiceBuilder;
58use tracing::{info_span, instrument, Instrument};
59
60pub use store::{Store, Worktree};
61
62lazy_static! {
63 static ref METRIC_CONNECTIONS: IntGauge =
64 register_int_gauge!("connections", "number of connections").unwrap();
65 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
66 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
67 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
68 register_int_gauge!("active_projects", "number of active projects").unwrap();
69 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
70 "shared_projects",
71 "number of open projects with one or more guests"
72 )
73 .unwrap();
74}
75
76type MessageHandler =
77 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
78
79struct Response<R> {
80 server: Arc<Server>,
81 receipt: Receipt<R>,
82 responded: Arc<AtomicBool>,
83}
84
85impl<R: RequestMessage> Response<R> {
86 fn send(self, payload: R::Response) -> Result<()> {
87 self.responded.store(true, SeqCst);
88 self.server.peer.respond(self.receipt, payload)?;
89 Ok(())
90 }
91}
92
93pub struct Server {
94 peer: Arc<Peer>,
95 pub(crate) store: Mutex<Store>,
96 app_state: Arc<AppState>,
97 handlers: HashMap<TypeId, MessageHandler>,
98 notifications: Option<mpsc::UnboundedSender<()>>,
99}
100
101pub trait Executor: Send + Clone {
102 type Sleep: Send + Future;
103 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
104 fn sleep(&self, duration: Duration) -> Self::Sleep;
105}
106
107#[derive(Clone)]
108pub struct RealExecutor;
109
110const MESSAGE_COUNT_PER_PAGE: usize = 100;
111const MAX_MESSAGE_LEN: usize = 1024;
112
113pub(crate) struct StoreGuard<'a> {
114 guard: MutexGuard<'a, Store>,
115 _not_send: PhantomData<Rc<()>>,
116}
117
118#[derive(Serialize)]
119pub struct ServerSnapshot<'a> {
120 peer: &'a Peer,
121 #[serde(serialize_with = "serialize_deref")]
122 store: StoreGuard<'a>,
123}
124
125pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
126where
127 S: Serializer,
128 T: Deref<Target = U>,
129 U: Serialize,
130{
131 Serialize::serialize(value.deref(), serializer)
132}
133
134impl Server {
135 pub fn new(
136 app_state: Arc<AppState>,
137 notifications: Option<mpsc::UnboundedSender<()>>,
138 ) -> Arc<Self> {
139 let mut server = Self {
140 peer: Peer::new(),
141 app_state,
142 store: Default::default(),
143 handlers: Default::default(),
144 notifications,
145 };
146
147 server
148 .add_request_handler(Server::ping)
149 .add_request_handler(Server::create_room)
150 .add_request_handler(Server::join_room)
151 .add_message_handler(Server::leave_room)
152 .add_request_handler(Server::call)
153 .add_request_handler(Server::cancel_call)
154 .add_message_handler(Server::decline_call)
155 .add_request_handler(Server::update_participant_location)
156 .add_request_handler(Server::share_project)
157 .add_message_handler(Server::unshare_project)
158 .add_request_handler(Server::join_project)
159 .add_message_handler(Server::leave_project)
160 .add_message_handler(Server::update_project)
161 .add_message_handler(Server::register_project_activity)
162 .add_request_handler(Server::update_worktree)
163 .add_message_handler(Server::update_worktree_extensions)
164 .add_message_handler(Server::start_language_server)
165 .add_message_handler(Server::update_language_server)
166 .add_message_handler(Server::update_diagnostic_summary)
167 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
168 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
170 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
171 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
172 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
173 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
176 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
177 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
178 .add_request_handler(
179 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
180 )
181 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
182 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
183 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
184 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
185 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
187 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
190 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
191 .add_message_handler(Server::create_buffer_for_peer)
192 .add_request_handler(Server::update_buffer)
193 .add_message_handler(Server::update_buffer_file)
194 .add_message_handler(Server::buffer_reloaded)
195 .add_message_handler(Server::buffer_saved)
196 .add_request_handler(Server::save_buffer)
197 .add_request_handler(Server::get_channels)
198 .add_request_handler(Server::get_users)
199 .add_request_handler(Server::fuzzy_search_users)
200 .add_request_handler(Server::request_contact)
201 .add_request_handler(Server::remove_contact)
202 .add_request_handler(Server::respond_to_contact_request)
203 .add_request_handler(Server::join_channel)
204 .add_message_handler(Server::leave_channel)
205 .add_request_handler(Server::send_channel_message)
206 .add_request_handler(Server::follow)
207 .add_message_handler(Server::unfollow)
208 .add_message_handler(Server::update_followers)
209 .add_request_handler(Server::get_channel_messages)
210 .add_message_handler(Server::update_diff_base)
211 .add_request_handler(Server::get_private_user_info);
212
213 Arc::new(server)
214 }
215
216 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
217 where
218 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
219 Fut: 'static + Send + Future<Output = Result<()>>,
220 M: EnvelopedMessage,
221 {
222 let prev_handler = self.handlers.insert(
223 TypeId::of::<M>(),
224 Box::new(move |server, envelope| {
225 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
226 let span = info_span!(
227 "handle message",
228 payload_type = envelope.payload_type_name()
229 );
230 span.in_scope(|| {
231 tracing::info!(
232 payload_type = envelope.payload_type_name(),
233 "message received"
234 );
235 });
236 let future = (handler)(server, *envelope);
237 async move {
238 if let Err(error) = future.await {
239 tracing::error!(%error, "error handling message");
240 }
241 }
242 .instrument(span)
243 .boxed()
244 }),
245 );
246 if prev_handler.is_some() {
247 panic!("registered a handler for the same message twice");
248 }
249 self
250 }
251
252 /// Handle a request while holding a lock to the store. This is useful when we're registering
253 /// a connection but we want to respond on the connection before anybody else can send on it.
254 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
255 where
256 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
257 Fut: Send + Future<Output = Result<()>>,
258 M: RequestMessage,
259 {
260 let handler = Arc::new(handler);
261 self.add_message_handler(move |server, envelope| {
262 let receipt = envelope.receipt();
263 let handler = handler.clone();
264 async move {
265 let responded = Arc::new(AtomicBool::default());
266 let response = Response {
267 server: server.clone(),
268 responded: responded.clone(),
269 receipt: envelope.receipt(),
270 };
271 match (handler)(server.clone(), envelope, response).await {
272 Ok(()) => {
273 if responded.load(std::sync::atomic::Ordering::SeqCst) {
274 Ok(())
275 } else {
276 Err(anyhow!("handler did not send a response"))?
277 }
278 }
279 Err(error) => {
280 server.peer.respond_with_error(
281 receipt,
282 proto::Error {
283 message: error.to_string(),
284 },
285 )?;
286 Err(error)
287 }
288 }
289 }
290 })
291 }
292
293 /// Start a long lived task that records which users are active in which projects.
294 pub fn start_recording_project_activity<E: 'static + Executor>(
295 self: &Arc<Self>,
296 interval: Duration,
297 executor: E,
298 ) {
299 executor.spawn_detached({
300 let this = Arc::downgrade(self);
301 let executor = executor.clone();
302 async move {
303 let mut period_start = OffsetDateTime::now_utc();
304 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
305 loop {
306 let sleep = executor.sleep(interval);
307 sleep.await;
308 let this = if let Some(this) = this.upgrade() {
309 this
310 } else {
311 break;
312 };
313
314 active_projects.clear();
315 active_projects.extend(this.store().await.projects().flat_map(
316 |(project_id, project)| {
317 project.guests.values().chain([&project.host]).filter_map(
318 |collaborator| {
319 if !collaborator.admin
320 && collaborator
321 .last_activity
322 .map_or(false, |activity| activity > period_start)
323 {
324 Some((collaborator.user_id, *project_id))
325 } else {
326 None
327 }
328 },
329 )
330 },
331 ));
332
333 let period_end = OffsetDateTime::now_utc();
334 this.app_state
335 .db
336 .record_user_activity(period_start..period_end, &active_projects)
337 .await
338 .trace_err();
339 period_start = period_end;
340 }
341 }
342 });
343 }
344
345 pub fn handle_connection<E: Executor>(
346 self: &Arc<Self>,
347 connection: Connection,
348 address: String,
349 user: User,
350 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
351 executor: E,
352 ) -> impl Future<Output = Result<()>> {
353 let mut this = self.clone();
354 let user_id = user.id;
355 let login = user.github_login;
356 let span = info_span!("handle connection", %user_id, %login, %address);
357 async move {
358 let (connection_id, handle_io, mut incoming_rx) = this
359 .peer
360 .add_connection(connection, {
361 let executor = executor.clone();
362 move |duration| {
363 let timer = executor.sleep(duration);
364 async move {
365 timer.await;
366 }
367 }
368 });
369
370 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
371
372 if let Some(send_connection_id) = send_connection_id.as_mut() {
373 let _ = send_connection_id.send(connection_id).await;
374 }
375
376 if !user.connected_once {
377 this.peer.send(connection_id, proto::ShowContacts {})?;
378 this.app_state.db.set_user_connected_once(user_id, true).await?;
379 }
380
381 let (contacts, invite_code) = future::try_join(
382 this.app_state.db.get_contacts(user_id),
383 this.app_state.db.get_invite_code_for_user(user_id)
384 ).await?;
385
386 {
387 let mut store = this.store().await;
388 let incoming_call = store.add_connection(connection_id, user_id, user.admin);
389 if let Some(incoming_call) = incoming_call {
390 this.peer.send(connection_id, incoming_call)?;
391 }
392
393 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
394
395 if let Some((code, count)) = invite_code {
396 this.peer.send(connection_id, proto::UpdateInviteInfo {
397 url: format!("{}{}", this.app_state.invite_link_prefix, code),
398 count,
399 })?;
400 }
401 }
402 this.update_user_contacts(user_id).await?;
403
404 let handle_io = handle_io.fuse();
405 futures::pin_mut!(handle_io);
406
407 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
408 // This prevents deadlocks when e.g., client A performs a request to client B and
409 // client B performs a request to client A. If both clients stop processing further
410 // messages until their respective request completes, they won't have a chance to
411 // respond to the other client's request and cause a deadlock.
412 //
413 // This arrangement ensures we will attempt to process earlier messages first, but fall
414 // back to processing messages arrived later in the spirit of making progress.
415 let mut foreground_message_handlers = FuturesUnordered::new();
416 loop {
417 let next_message = incoming_rx.next().fuse();
418 futures::pin_mut!(next_message);
419 futures::select_biased! {
420 result = handle_io => {
421 if let Err(error) = result {
422 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
423 }
424 break;
425 }
426 _ = foreground_message_handlers.next() => {}
427 message = next_message => {
428 if let Some(message) = message {
429 let type_name = message.payload_type_name();
430 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
431 let span_enter = span.enter();
432 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
433 let notifications = this.notifications.clone();
434 let is_background = message.is_background();
435 let handle_message = (handler)(this.clone(), message);
436
437 drop(span_enter);
438 let handle_message = async move {
439 handle_message.await;
440 if let Some(mut notifications) = notifications {
441 let _ = notifications.send(()).await;
442 }
443 }.instrument(span);
444
445 if is_background {
446 executor.spawn_detached(handle_message);
447 } else {
448 foreground_message_handlers.push(handle_message);
449 }
450 } else {
451 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
452 }
453 } else {
454 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
455 break;
456 }
457 }
458 }
459 }
460
461 drop(foreground_message_handlers);
462 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
463 if let Err(error) = this.sign_out(connection_id).await {
464 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
465 }
466
467 Ok(())
468 }.instrument(span)
469 }
470
471 #[instrument(skip(self), err)]
472 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
473 self.peer.disconnect(connection_id);
474
475 let mut projects_to_unshare = Vec::new();
476 let mut contacts_to_update = HashSet::default();
477 {
478 let mut store = self.store().await;
479 let removed_connection = store.remove_connection(connection_id)?;
480
481 for project in removed_connection.hosted_projects {
482 projects_to_unshare.push(project.id);
483 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
484 self.peer.send(
485 conn_id,
486 proto::UnshareProject {
487 project_id: project.id.to_proto(),
488 },
489 )
490 });
491 }
492
493 for project in removed_connection.guest_projects {
494 broadcast(connection_id, project.connection_ids, |conn_id| {
495 self.peer.send(
496 conn_id,
497 proto::RemoveProjectCollaborator {
498 project_id: project.id.to_proto(),
499 peer_id: connection_id.0,
500 },
501 )
502 });
503 }
504
505 for connection_id in removed_connection.canceled_call_connection_ids {
506 self.peer
507 .send(connection_id, proto::CallCanceled {})
508 .trace_err();
509 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
510 }
511
512 if let Some(room) = removed_connection
513 .room_id
514 .and_then(|room_id| store.room(room_id))
515 {
516 self.room_updated(room);
517 }
518
519 contacts_to_update.insert(removed_connection.user_id);
520 };
521
522 for user_id in contacts_to_update {
523 self.update_user_contacts(user_id).await.trace_err();
524 }
525
526 for project_id in projects_to_unshare {
527 self.app_state
528 .db
529 .unregister_project(project_id)
530 .await
531 .trace_err();
532 }
533
534 Ok(())
535 }
536
537 pub async fn invite_code_redeemed(
538 self: &Arc<Self>,
539 inviter_id: UserId,
540 invitee_id: UserId,
541 ) -> Result<()> {
542 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
543 if let Some(code) = &user.invite_code {
544 let store = self.store().await;
545 let invitee_contact = store.contact_for_user(invitee_id, true);
546 for connection_id in store.connection_ids_for_user(inviter_id) {
547 self.peer.send(
548 connection_id,
549 proto::UpdateContacts {
550 contacts: vec![invitee_contact.clone()],
551 ..Default::default()
552 },
553 )?;
554 self.peer.send(
555 connection_id,
556 proto::UpdateInviteInfo {
557 url: format!("{}{}", self.app_state.invite_link_prefix, &code),
558 count: user.invite_count as u32,
559 },
560 )?;
561 }
562 }
563 }
564 Ok(())
565 }
566
567 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
568 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
569 if let Some(invite_code) = &user.invite_code {
570 let store = self.store().await;
571 for connection_id in store.connection_ids_for_user(user_id) {
572 self.peer.send(
573 connection_id,
574 proto::UpdateInviteInfo {
575 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
576 count: user.invite_count as u32,
577 },
578 )?;
579 }
580 }
581 }
582 Ok(())
583 }
584
585 async fn ping(
586 self: Arc<Server>,
587 _: TypedEnvelope<proto::Ping>,
588 response: Response<proto::Ping>,
589 ) -> Result<()> {
590 response.send(proto::Ack {})?;
591 Ok(())
592 }
593
594 async fn create_room(
595 self: Arc<Server>,
596 request: TypedEnvelope<proto::CreateRoom>,
597 response: Response<proto::CreateRoom>,
598 ) -> Result<()> {
599 let user_id;
600 let room_id;
601 {
602 let mut store = self.store().await;
603 user_id = store.user_id_for_connection(request.sender_id)?;
604 room_id = store.create_room(request.sender_id)?;
605 }
606 response.send(proto::CreateRoomResponse { id: room_id })?;
607 self.update_user_contacts(user_id).await?;
608 Ok(())
609 }
610
611 async fn join_room(
612 self: Arc<Server>,
613 request: TypedEnvelope<proto::JoinRoom>,
614 response: Response<proto::JoinRoom>,
615 ) -> Result<()> {
616 let user_id;
617 {
618 let mut store = self.store().await;
619 user_id = store.user_id_for_connection(request.sender_id)?;
620 let (room, recipient_connection_ids) =
621 store.join_room(request.payload.id, request.sender_id)?;
622 for recipient_id in recipient_connection_ids {
623 self.peer
624 .send(recipient_id, proto::CallCanceled {})
625 .trace_err();
626 }
627 response.send(proto::JoinRoomResponse {
628 room: Some(room.clone()),
629 })?;
630 self.room_updated(room);
631 }
632 self.update_user_contacts(user_id).await?;
633 Ok(())
634 }
635
636 async fn leave_room(self: Arc<Server>, message: TypedEnvelope<proto::LeaveRoom>) -> Result<()> {
637 let mut contacts_to_update = HashSet::default();
638 {
639 let mut store = self.store().await;
640 let user_id = store.user_id_for_connection(message.sender_id)?;
641 let left_room = store.leave_room(message.payload.id, message.sender_id)?;
642 contacts_to_update.insert(user_id);
643
644 for project in left_room.unshared_projects {
645 for connection_id in project.connection_ids() {
646 self.peer.send(
647 connection_id,
648 proto::UnshareProject {
649 project_id: project.id.to_proto(),
650 },
651 )?;
652 }
653 }
654
655 for project in left_room.left_projects {
656 if project.remove_collaborator {
657 for connection_id in project.connection_ids {
658 self.peer.send(
659 connection_id,
660 proto::RemoveProjectCollaborator {
661 project_id: project.id.to_proto(),
662 peer_id: message.sender_id.0,
663 },
664 )?;
665 }
666
667 self.peer.send(
668 message.sender_id,
669 proto::UnshareProject {
670 project_id: project.id.to_proto(),
671 },
672 )?;
673 }
674 }
675
676 if let Some(room) = left_room.room {
677 self.room_updated(room);
678 }
679
680 for connection_id in left_room.canceled_call_connection_ids {
681 self.peer
682 .send(connection_id, proto::CallCanceled {})
683 .trace_err();
684 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
685 }
686 }
687
688 for user_id in contacts_to_update {
689 self.update_user_contacts(user_id).await?;
690 }
691
692 Ok(())
693 }
694
695 async fn call(
696 self: Arc<Server>,
697 request: TypedEnvelope<proto::Call>,
698 response: Response<proto::Call>,
699 ) -> Result<()> {
700 let caller_user_id = self
701 .store()
702 .await
703 .user_id_for_connection(request.sender_id)?;
704 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
705 let initial_project_id = request
706 .payload
707 .initial_project_id
708 .map(ProjectId::from_proto);
709 if !self
710 .app_state
711 .db
712 .has_contact(caller_user_id, recipient_user_id)
713 .await?
714 {
715 return Err(anyhow!("cannot call a user who isn't a contact"))?;
716 }
717
718 let room_id = request.payload.room_id;
719 let mut calls = {
720 let mut store = self.store().await;
721 let (room, recipient_connection_ids, incoming_call) = store.call(
722 room_id,
723 recipient_user_id,
724 initial_project_id,
725 request.sender_id,
726 )?;
727 self.room_updated(room);
728 recipient_connection_ids
729 .into_iter()
730 .map(|recipient_connection_id| {
731 self.peer
732 .request(recipient_connection_id, incoming_call.clone())
733 })
734 .collect::<FuturesUnordered<_>>()
735 };
736 self.update_user_contacts(recipient_user_id).await?;
737
738 while let Some(call_response) = calls.next().await {
739 match call_response.as_ref() {
740 Ok(_) => {
741 response.send(proto::Ack {})?;
742 return Ok(());
743 }
744 Err(_) => {
745 call_response.trace_err();
746 }
747 }
748 }
749
750 {
751 let mut store = self.store().await;
752 let room = store.call_failed(room_id, recipient_user_id)?;
753 self.room_updated(&room);
754 }
755 self.update_user_contacts(recipient_user_id).await?;
756
757 Err(anyhow!("failed to ring call recipient"))?
758 }
759
760 async fn cancel_call(
761 self: Arc<Server>,
762 request: TypedEnvelope<proto::CancelCall>,
763 response: Response<proto::CancelCall>,
764 ) -> Result<()> {
765 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
766 {
767 let mut store = self.store().await;
768 let (room, recipient_connection_ids) = store.cancel_call(
769 request.payload.room_id,
770 recipient_user_id,
771 request.sender_id,
772 )?;
773 for recipient_id in recipient_connection_ids {
774 self.peer
775 .send(recipient_id, proto::CallCanceled {})
776 .trace_err();
777 }
778 self.room_updated(room);
779 response.send(proto::Ack {})?;
780 }
781 self.update_user_contacts(recipient_user_id).await?;
782 Ok(())
783 }
784
785 async fn decline_call(
786 self: Arc<Server>,
787 message: TypedEnvelope<proto::DeclineCall>,
788 ) -> Result<()> {
789 let recipient_user_id;
790 {
791 let mut store = self.store().await;
792 recipient_user_id = store.user_id_for_connection(message.sender_id)?;
793 let (room, recipient_connection_ids) =
794 store.decline_call(message.payload.room_id, message.sender_id)?;
795 for recipient_id in recipient_connection_ids {
796 self.peer
797 .send(recipient_id, proto::CallCanceled {})
798 .trace_err();
799 }
800 self.room_updated(room);
801 }
802 self.update_user_contacts(recipient_user_id).await?;
803 Ok(())
804 }
805
806 async fn update_participant_location(
807 self: Arc<Server>,
808 request: TypedEnvelope<proto::UpdateParticipantLocation>,
809 response: Response<proto::UpdateParticipantLocation>,
810 ) -> Result<()> {
811 let room_id = request.payload.room_id;
812 let location = request
813 .payload
814 .location
815 .ok_or_else(|| anyhow!("invalid location"))?;
816 let mut store = self.store().await;
817 let room = store.update_participant_location(room_id, location, request.sender_id)?;
818 self.room_updated(room);
819 response.send(proto::Ack {})?;
820 Ok(())
821 }
822
823 fn room_updated(&self, room: &proto::Room) {
824 for participant in &room.participants {
825 self.peer
826 .send(
827 ConnectionId(participant.peer_id),
828 proto::RoomUpdated {
829 room: Some(room.clone()),
830 },
831 )
832 .trace_err();
833 }
834 }
835
836 async fn share_project(
837 self: Arc<Server>,
838 request: TypedEnvelope<proto::ShareProject>,
839 response: Response<proto::ShareProject>,
840 ) -> Result<()> {
841 let user_id = self
842 .store()
843 .await
844 .user_id_for_connection(request.sender_id)?;
845 let project_id = self.app_state.db.register_project(user_id).await?;
846 let mut store = self.store().await;
847 let room = store.share_project(
848 request.payload.room_id,
849 project_id,
850 request.payload.worktrees,
851 request.sender_id,
852 )?;
853 response.send(proto::ShareProjectResponse {
854 project_id: project_id.to_proto(),
855 })?;
856 self.room_updated(room);
857
858 Ok(())
859 }
860
861 async fn unshare_project(
862 self: Arc<Server>,
863 message: TypedEnvelope<proto::UnshareProject>,
864 ) -> Result<()> {
865 let project_id = ProjectId::from_proto(message.payload.project_id);
866 let mut store = self.store().await;
867 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
868 broadcast(
869 message.sender_id,
870 project.guest_connection_ids(),
871 |conn_id| self.peer.send(conn_id, message.payload.clone()),
872 );
873 self.room_updated(room);
874
875 Ok(())
876 }
877
878 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
879 let contacts = self.app_state.db.get_contacts(user_id).await?;
880 let store = self.store().await;
881 let updated_contact = store.contact_for_user(user_id, false);
882 for contact in contacts {
883 if let db::Contact::Accepted {
884 user_id: contact_user_id,
885 ..
886 } = contact
887 {
888 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
889 self.peer
890 .send(
891 contact_conn_id,
892 proto::UpdateContacts {
893 contacts: vec![updated_contact.clone()],
894 remove_contacts: Default::default(),
895 incoming_requests: Default::default(),
896 remove_incoming_requests: Default::default(),
897 outgoing_requests: Default::default(),
898 remove_outgoing_requests: Default::default(),
899 },
900 )
901 .trace_err();
902 }
903 }
904 }
905 Ok(())
906 }
907
908 async fn join_project(
909 self: Arc<Server>,
910 request: TypedEnvelope<proto::JoinProject>,
911 response: Response<proto::JoinProject>,
912 ) -> Result<()> {
913 let project_id = ProjectId::from_proto(request.payload.project_id);
914
915 let host_user_id;
916 let guest_user_id;
917 let host_connection_id;
918 {
919 let state = self.store().await;
920 let project = state.project(project_id)?;
921 host_user_id = project.host.user_id;
922 host_connection_id = project.host_connection_id;
923 guest_user_id = state.user_id_for_connection(request.sender_id)?;
924 };
925
926 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
927
928 let mut store = self.store().await;
929 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
930 let peer_count = project.guests.len();
931 let mut collaborators = Vec::with_capacity(peer_count);
932 collaborators.push(proto::Collaborator {
933 peer_id: project.host_connection_id.0,
934 replica_id: 0,
935 user_id: project.host.user_id.to_proto(),
936 });
937 let worktrees = project
938 .worktrees
939 .iter()
940 .map(|(id, worktree)| proto::WorktreeMetadata {
941 id: *id,
942 root_name: worktree.root_name.clone(),
943 visible: worktree.visible,
944 })
945 .collect::<Vec<_>>();
946
947 // Add all guests other than the requesting user's own connections as collaborators
948 for (guest_conn_id, guest) in &project.guests {
949 if request.sender_id != *guest_conn_id {
950 collaborators.push(proto::Collaborator {
951 peer_id: guest_conn_id.0,
952 replica_id: guest.replica_id as u32,
953 user_id: guest.user_id.to_proto(),
954 });
955 }
956 }
957
958 for conn_id in project.connection_ids() {
959 if conn_id != request.sender_id {
960 self.peer.send(
961 conn_id,
962 proto::AddProjectCollaborator {
963 project_id: project_id.to_proto(),
964 collaborator: Some(proto::Collaborator {
965 peer_id: request.sender_id.0,
966 replica_id: replica_id as u32,
967 user_id: guest_user_id.to_proto(),
968 }),
969 },
970 )?;
971 }
972 }
973
974 // First, we send the metadata associated with each worktree.
975 response.send(proto::JoinProjectResponse {
976 worktrees: worktrees.clone(),
977 replica_id: replica_id as u32,
978 collaborators: collaborators.clone(),
979 language_servers: project.language_servers.clone(),
980 })?;
981
982 for (worktree_id, worktree) in &project.worktrees {
983 #[cfg(any(test, feature = "test-support"))]
984 const MAX_CHUNK_SIZE: usize = 2;
985 #[cfg(not(any(test, feature = "test-support")))]
986 const MAX_CHUNK_SIZE: usize = 256;
987
988 // Stream this worktree's entries.
989 let message = proto::UpdateWorktree {
990 project_id: project_id.to_proto(),
991 worktree_id: *worktree_id,
992 root_name: worktree.root_name.clone(),
993 updated_entries: worktree.entries.values().cloned().collect(),
994 removed_entries: Default::default(),
995 scan_id: worktree.scan_id,
996 is_last_update: worktree.is_complete,
997 };
998 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
999 self.peer.send(request.sender_id, update.clone())?;
1000 }
1001
1002 // Stream this worktree's diagnostics.
1003 for summary in worktree.diagnostic_summaries.values() {
1004 self.peer.send(
1005 request.sender_id,
1006 proto::UpdateDiagnosticSummary {
1007 project_id: project_id.to_proto(),
1008 worktree_id: *worktree_id,
1009 summary: Some(summary.clone()),
1010 },
1011 )?;
1012 }
1013 }
1014
1015 Ok(())
1016 }
1017
1018 async fn leave_project(
1019 self: Arc<Server>,
1020 request: TypedEnvelope<proto::LeaveProject>,
1021 ) -> Result<()> {
1022 let sender_id = request.sender_id;
1023 let project_id = ProjectId::from_proto(request.payload.project_id);
1024 let project;
1025 {
1026 let mut store = self.store().await;
1027 project = store.leave_project(project_id, sender_id)?;
1028 tracing::info!(
1029 %project_id,
1030 host_user_id = %project.host_user_id,
1031 host_connection_id = %project.host_connection_id,
1032 "leave project"
1033 );
1034
1035 if project.remove_collaborator {
1036 broadcast(sender_id, project.connection_ids, |conn_id| {
1037 self.peer.send(
1038 conn_id,
1039 proto::RemoveProjectCollaborator {
1040 project_id: project_id.to_proto(),
1041 peer_id: sender_id.0,
1042 },
1043 )
1044 });
1045 }
1046 }
1047
1048 Ok(())
1049 }
1050
1051 async fn update_project(
1052 self: Arc<Server>,
1053 request: TypedEnvelope<proto::UpdateProject>,
1054 ) -> Result<()> {
1055 let project_id = ProjectId::from_proto(request.payload.project_id);
1056 {
1057 let mut state = self.store().await;
1058 let guest_connection_ids = state
1059 .read_project(project_id, request.sender_id)?
1060 .guest_connection_ids();
1061 let room =
1062 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
1063 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1064 self.peer
1065 .forward_send(request.sender_id, connection_id, request.payload.clone())
1066 });
1067 self.room_updated(room);
1068 };
1069
1070 Ok(())
1071 }
1072
1073 async fn register_project_activity(
1074 self: Arc<Server>,
1075 request: TypedEnvelope<proto::RegisterProjectActivity>,
1076 ) -> Result<()> {
1077 self.store().await.register_project_activity(
1078 ProjectId::from_proto(request.payload.project_id),
1079 request.sender_id,
1080 )?;
1081 Ok(())
1082 }
1083
1084 async fn update_worktree(
1085 self: Arc<Server>,
1086 request: TypedEnvelope<proto::UpdateWorktree>,
1087 response: Response<proto::UpdateWorktree>,
1088 ) -> Result<()> {
1089 let project_id = ProjectId::from_proto(request.payload.project_id);
1090 let worktree_id = request.payload.worktree_id;
1091 let connection_ids = self.store().await.update_worktree(
1092 request.sender_id,
1093 project_id,
1094 worktree_id,
1095 &request.payload.root_name,
1096 &request.payload.removed_entries,
1097 &request.payload.updated_entries,
1098 request.payload.scan_id,
1099 request.payload.is_last_update,
1100 )?;
1101
1102 broadcast(request.sender_id, connection_ids, |connection_id| {
1103 self.peer
1104 .forward_send(request.sender_id, connection_id, request.payload.clone())
1105 });
1106 response.send(proto::Ack {})?;
1107 Ok(())
1108 }
1109
1110 async fn update_worktree_extensions(
1111 self: Arc<Server>,
1112 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1113 ) -> Result<()> {
1114 let project_id = ProjectId::from_proto(request.payload.project_id);
1115 let worktree_id = request.payload.worktree_id;
1116 let extensions = request
1117 .payload
1118 .extensions
1119 .into_iter()
1120 .zip(request.payload.counts)
1121 .collect();
1122 self.app_state
1123 .db
1124 .update_worktree_extensions(project_id, worktree_id, extensions)
1125 .await?;
1126 Ok(())
1127 }
1128
1129 async fn update_diagnostic_summary(
1130 self: Arc<Server>,
1131 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1132 ) -> Result<()> {
1133 let summary = request
1134 .payload
1135 .summary
1136 .clone()
1137 .ok_or_else(|| anyhow!("invalid summary"))?;
1138 let receiver_ids = self.store().await.update_diagnostic_summary(
1139 ProjectId::from_proto(request.payload.project_id),
1140 request.payload.worktree_id,
1141 request.sender_id,
1142 summary,
1143 )?;
1144
1145 broadcast(request.sender_id, receiver_ids, |connection_id| {
1146 self.peer
1147 .forward_send(request.sender_id, connection_id, request.payload.clone())
1148 });
1149 Ok(())
1150 }
1151
1152 async fn start_language_server(
1153 self: Arc<Server>,
1154 request: TypedEnvelope<proto::StartLanguageServer>,
1155 ) -> Result<()> {
1156 let receiver_ids = self.store().await.start_language_server(
1157 ProjectId::from_proto(request.payload.project_id),
1158 request.sender_id,
1159 request
1160 .payload
1161 .server
1162 .clone()
1163 .ok_or_else(|| anyhow!("invalid language server"))?,
1164 )?;
1165 broadcast(request.sender_id, receiver_ids, |connection_id| {
1166 self.peer
1167 .forward_send(request.sender_id, connection_id, request.payload.clone())
1168 });
1169 Ok(())
1170 }
1171
1172 async fn update_language_server(
1173 self: Arc<Server>,
1174 request: TypedEnvelope<proto::UpdateLanguageServer>,
1175 ) -> Result<()> {
1176 let receiver_ids = self.store().await.project_connection_ids(
1177 ProjectId::from_proto(request.payload.project_id),
1178 request.sender_id,
1179 )?;
1180 broadcast(request.sender_id, receiver_ids, |connection_id| {
1181 self.peer
1182 .forward_send(request.sender_id, connection_id, request.payload.clone())
1183 });
1184 Ok(())
1185 }
1186
1187 async fn forward_project_request<T>(
1188 self: Arc<Server>,
1189 request: TypedEnvelope<T>,
1190 response: Response<T>,
1191 ) -> Result<()>
1192 where
1193 T: EntityMessage + RequestMessage,
1194 {
1195 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1196 let host_connection_id = self
1197 .store()
1198 .await
1199 .read_project(project_id, request.sender_id)?
1200 .host_connection_id;
1201 let payload = self
1202 .peer
1203 .forward_request(request.sender_id, host_connection_id, request.payload)
1204 .await?;
1205
1206 // Ensure project still exists by the time we get the response from the host.
1207 self.store()
1208 .await
1209 .read_project(project_id, request.sender_id)?;
1210
1211 response.send(payload)?;
1212 Ok(())
1213 }
1214
1215 async fn save_buffer(
1216 self: Arc<Server>,
1217 request: TypedEnvelope<proto::SaveBuffer>,
1218 response: Response<proto::SaveBuffer>,
1219 ) -> Result<()> {
1220 let project_id = ProjectId::from_proto(request.payload.project_id);
1221 let host = self
1222 .store()
1223 .await
1224 .read_project(project_id, request.sender_id)?
1225 .host_connection_id;
1226 let response_payload = self
1227 .peer
1228 .forward_request(request.sender_id, host, request.payload.clone())
1229 .await?;
1230
1231 let mut guests = self
1232 .store()
1233 .await
1234 .read_project(project_id, request.sender_id)?
1235 .connection_ids();
1236 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1237 broadcast(host, guests, |conn_id| {
1238 self.peer
1239 .forward_send(host, conn_id, response_payload.clone())
1240 });
1241 response.send(response_payload)?;
1242 Ok(())
1243 }
1244
1245 async fn create_buffer_for_peer(
1246 self: Arc<Server>,
1247 request: TypedEnvelope<proto::CreateBufferForPeer>,
1248 ) -> Result<()> {
1249 self.peer.forward_send(
1250 request.sender_id,
1251 ConnectionId(request.payload.peer_id),
1252 request.payload,
1253 )?;
1254 Ok(())
1255 }
1256
1257 async fn update_buffer(
1258 self: Arc<Server>,
1259 request: TypedEnvelope<proto::UpdateBuffer>,
1260 response: Response<proto::UpdateBuffer>,
1261 ) -> Result<()> {
1262 let project_id = ProjectId::from_proto(request.payload.project_id);
1263 let receiver_ids = {
1264 let mut store = self.store().await;
1265 store.register_project_activity(project_id, request.sender_id)?;
1266 store.project_connection_ids(project_id, request.sender_id)?
1267 };
1268
1269 broadcast(request.sender_id, receiver_ids, |connection_id| {
1270 self.peer
1271 .forward_send(request.sender_id, connection_id, request.payload.clone())
1272 });
1273 response.send(proto::Ack {})?;
1274 Ok(())
1275 }
1276
1277 async fn update_buffer_file(
1278 self: Arc<Server>,
1279 request: TypedEnvelope<proto::UpdateBufferFile>,
1280 ) -> Result<()> {
1281 let receiver_ids = self.store().await.project_connection_ids(
1282 ProjectId::from_proto(request.payload.project_id),
1283 request.sender_id,
1284 )?;
1285 broadcast(request.sender_id, receiver_ids, |connection_id| {
1286 self.peer
1287 .forward_send(request.sender_id, connection_id, request.payload.clone())
1288 });
1289 Ok(())
1290 }
1291
1292 async fn buffer_reloaded(
1293 self: Arc<Server>,
1294 request: TypedEnvelope<proto::BufferReloaded>,
1295 ) -> Result<()> {
1296 let receiver_ids = self.store().await.project_connection_ids(
1297 ProjectId::from_proto(request.payload.project_id),
1298 request.sender_id,
1299 )?;
1300 broadcast(request.sender_id, receiver_ids, |connection_id| {
1301 self.peer
1302 .forward_send(request.sender_id, connection_id, request.payload.clone())
1303 });
1304 Ok(())
1305 }
1306
1307 async fn buffer_saved(
1308 self: Arc<Server>,
1309 request: TypedEnvelope<proto::BufferSaved>,
1310 ) -> Result<()> {
1311 let receiver_ids = self.store().await.project_connection_ids(
1312 ProjectId::from_proto(request.payload.project_id),
1313 request.sender_id,
1314 )?;
1315 broadcast(request.sender_id, receiver_ids, |connection_id| {
1316 self.peer
1317 .forward_send(request.sender_id, connection_id, request.payload.clone())
1318 });
1319 Ok(())
1320 }
1321
1322 async fn follow(
1323 self: Arc<Self>,
1324 request: TypedEnvelope<proto::Follow>,
1325 response: Response<proto::Follow>,
1326 ) -> Result<()> {
1327 let project_id = ProjectId::from_proto(request.payload.project_id);
1328 let leader_id = ConnectionId(request.payload.leader_id);
1329 let follower_id = request.sender_id;
1330 {
1331 let mut store = self.store().await;
1332 if !store
1333 .project_connection_ids(project_id, follower_id)?
1334 .contains(&leader_id)
1335 {
1336 Err(anyhow!("no such peer"))?;
1337 }
1338
1339 store.register_project_activity(project_id, follower_id)?;
1340 }
1341
1342 let mut response_payload = self
1343 .peer
1344 .forward_request(request.sender_id, leader_id, request.payload)
1345 .await?;
1346 response_payload
1347 .views
1348 .retain(|view| view.leader_id != Some(follower_id.0));
1349 response.send(response_payload)?;
1350 Ok(())
1351 }
1352
1353 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1354 let project_id = ProjectId::from_proto(request.payload.project_id);
1355 let leader_id = ConnectionId(request.payload.leader_id);
1356 let mut store = self.store().await;
1357 if !store
1358 .project_connection_ids(project_id, request.sender_id)?
1359 .contains(&leader_id)
1360 {
1361 Err(anyhow!("no such peer"))?;
1362 }
1363 store.register_project_activity(project_id, request.sender_id)?;
1364 self.peer
1365 .forward_send(request.sender_id, leader_id, request.payload)?;
1366 Ok(())
1367 }
1368
1369 async fn update_followers(
1370 self: Arc<Self>,
1371 request: TypedEnvelope<proto::UpdateFollowers>,
1372 ) -> Result<()> {
1373 let project_id = ProjectId::from_proto(request.payload.project_id);
1374 let mut store = self.store().await;
1375 store.register_project_activity(project_id, request.sender_id)?;
1376 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1377 let leader_id = request
1378 .payload
1379 .variant
1380 .as_ref()
1381 .and_then(|variant| match variant {
1382 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1383 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1384 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1385 });
1386 for follower_id in &request.payload.follower_ids {
1387 let follower_id = ConnectionId(*follower_id);
1388 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1389 self.peer
1390 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1391 }
1392 }
1393 Ok(())
1394 }
1395
1396 async fn get_channels(
1397 self: Arc<Server>,
1398 request: TypedEnvelope<proto::GetChannels>,
1399 response: Response<proto::GetChannels>,
1400 ) -> Result<()> {
1401 let user_id = self
1402 .store()
1403 .await
1404 .user_id_for_connection(request.sender_id)?;
1405 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1406 response.send(proto::GetChannelsResponse {
1407 channels: channels
1408 .into_iter()
1409 .map(|chan| proto::Channel {
1410 id: chan.id.to_proto(),
1411 name: chan.name,
1412 })
1413 .collect(),
1414 })?;
1415 Ok(())
1416 }
1417
1418 async fn get_users(
1419 self: Arc<Server>,
1420 request: TypedEnvelope<proto::GetUsers>,
1421 response: Response<proto::GetUsers>,
1422 ) -> Result<()> {
1423 let user_ids = request
1424 .payload
1425 .user_ids
1426 .into_iter()
1427 .map(UserId::from_proto)
1428 .collect();
1429 let users = self
1430 .app_state
1431 .db
1432 .get_users_by_ids(user_ids)
1433 .await?
1434 .into_iter()
1435 .map(|user| proto::User {
1436 id: user.id.to_proto(),
1437 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1438 github_login: user.github_login,
1439 })
1440 .collect();
1441 response.send(proto::UsersResponse { users })?;
1442 Ok(())
1443 }
1444
1445 async fn fuzzy_search_users(
1446 self: Arc<Server>,
1447 request: TypedEnvelope<proto::FuzzySearchUsers>,
1448 response: Response<proto::FuzzySearchUsers>,
1449 ) -> Result<()> {
1450 let user_id = self
1451 .store()
1452 .await
1453 .user_id_for_connection(request.sender_id)?;
1454 let query = request.payload.query;
1455 let db = &self.app_state.db;
1456 let users = match query.len() {
1457 0 => vec![],
1458 1 | 2 => db
1459 .get_user_by_github_account(&query, None)
1460 .await?
1461 .into_iter()
1462 .collect(),
1463 _ => db.fuzzy_search_users(&query, 10).await?,
1464 };
1465 let users = users
1466 .into_iter()
1467 .filter(|user| user.id != user_id)
1468 .map(|user| proto::User {
1469 id: user.id.to_proto(),
1470 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1471 github_login: user.github_login,
1472 })
1473 .collect();
1474 response.send(proto::UsersResponse { users })?;
1475 Ok(())
1476 }
1477
1478 async fn request_contact(
1479 self: Arc<Server>,
1480 request: TypedEnvelope<proto::RequestContact>,
1481 response: Response<proto::RequestContact>,
1482 ) -> Result<()> {
1483 let requester_id = self
1484 .store()
1485 .await
1486 .user_id_for_connection(request.sender_id)?;
1487 let responder_id = UserId::from_proto(request.payload.responder_id);
1488 if requester_id == responder_id {
1489 return Err(anyhow!("cannot add yourself as a contact"))?;
1490 }
1491
1492 self.app_state
1493 .db
1494 .send_contact_request(requester_id, responder_id)
1495 .await?;
1496
1497 // Update outgoing contact requests of requester
1498 let mut update = proto::UpdateContacts::default();
1499 update.outgoing_requests.push(responder_id.to_proto());
1500 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1501 self.peer.send(connection_id, update.clone())?;
1502 }
1503
1504 // Update incoming contact requests of responder
1505 let mut update = proto::UpdateContacts::default();
1506 update
1507 .incoming_requests
1508 .push(proto::IncomingContactRequest {
1509 requester_id: requester_id.to_proto(),
1510 should_notify: true,
1511 });
1512 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1513 self.peer.send(connection_id, update.clone())?;
1514 }
1515
1516 response.send(proto::Ack {})?;
1517 Ok(())
1518 }
1519
1520 async fn respond_to_contact_request(
1521 self: Arc<Server>,
1522 request: TypedEnvelope<proto::RespondToContactRequest>,
1523 response: Response<proto::RespondToContactRequest>,
1524 ) -> Result<()> {
1525 let responder_id = self
1526 .store()
1527 .await
1528 .user_id_for_connection(request.sender_id)?;
1529 let requester_id = UserId::from_proto(request.payload.requester_id);
1530 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1531 self.app_state
1532 .db
1533 .dismiss_contact_notification(responder_id, requester_id)
1534 .await?;
1535 } else {
1536 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1537 self.app_state
1538 .db
1539 .respond_to_contact_request(responder_id, requester_id, accept)
1540 .await?;
1541
1542 let store = self.store().await;
1543 // Update responder with new contact
1544 let mut update = proto::UpdateContacts::default();
1545 if accept {
1546 update
1547 .contacts
1548 .push(store.contact_for_user(requester_id, false));
1549 }
1550 update
1551 .remove_incoming_requests
1552 .push(requester_id.to_proto());
1553 for connection_id in store.connection_ids_for_user(responder_id) {
1554 self.peer.send(connection_id, update.clone())?;
1555 }
1556
1557 // Update requester with new contact
1558 let mut update = proto::UpdateContacts::default();
1559 if accept {
1560 update
1561 .contacts
1562 .push(store.contact_for_user(responder_id, true));
1563 }
1564 update
1565 .remove_outgoing_requests
1566 .push(responder_id.to_proto());
1567 for connection_id in store.connection_ids_for_user(requester_id) {
1568 self.peer.send(connection_id, update.clone())?;
1569 }
1570 }
1571
1572 response.send(proto::Ack {})?;
1573 Ok(())
1574 }
1575
1576 async fn remove_contact(
1577 self: Arc<Server>,
1578 request: TypedEnvelope<proto::RemoveContact>,
1579 response: Response<proto::RemoveContact>,
1580 ) -> Result<()> {
1581 let requester_id = self
1582 .store()
1583 .await
1584 .user_id_for_connection(request.sender_id)?;
1585 let responder_id = UserId::from_proto(request.payload.user_id);
1586 self.app_state
1587 .db
1588 .remove_contact(requester_id, responder_id)
1589 .await?;
1590
1591 // Update outgoing contact requests of requester
1592 let mut update = proto::UpdateContacts::default();
1593 update
1594 .remove_outgoing_requests
1595 .push(responder_id.to_proto());
1596 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1597 self.peer.send(connection_id, update.clone())?;
1598 }
1599
1600 // Update incoming contact requests of responder
1601 let mut update = proto::UpdateContacts::default();
1602 update
1603 .remove_incoming_requests
1604 .push(requester_id.to_proto());
1605 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1606 self.peer.send(connection_id, update.clone())?;
1607 }
1608
1609 response.send(proto::Ack {})?;
1610 Ok(())
1611 }
1612
1613 async fn join_channel(
1614 self: Arc<Self>,
1615 request: TypedEnvelope<proto::JoinChannel>,
1616 response: Response<proto::JoinChannel>,
1617 ) -> Result<()> {
1618 let user_id = self
1619 .store()
1620 .await
1621 .user_id_for_connection(request.sender_id)?;
1622 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1623 if !self
1624 .app_state
1625 .db
1626 .can_user_access_channel(user_id, channel_id)
1627 .await?
1628 {
1629 Err(anyhow!("access denied"))?;
1630 }
1631
1632 self.store()
1633 .await
1634 .join_channel(request.sender_id, channel_id);
1635 let messages = self
1636 .app_state
1637 .db
1638 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1639 .await?
1640 .into_iter()
1641 .map(|msg| proto::ChannelMessage {
1642 id: msg.id.to_proto(),
1643 body: msg.body,
1644 timestamp: msg.sent_at.unix_timestamp() as u64,
1645 sender_id: msg.sender_id.to_proto(),
1646 nonce: Some(msg.nonce.as_u128().into()),
1647 })
1648 .collect::<Vec<_>>();
1649 response.send(proto::JoinChannelResponse {
1650 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1651 messages,
1652 })?;
1653 Ok(())
1654 }
1655
1656 async fn leave_channel(
1657 self: Arc<Self>,
1658 request: TypedEnvelope<proto::LeaveChannel>,
1659 ) -> Result<()> {
1660 let user_id = self
1661 .store()
1662 .await
1663 .user_id_for_connection(request.sender_id)?;
1664 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1665 if !self
1666 .app_state
1667 .db
1668 .can_user_access_channel(user_id, channel_id)
1669 .await?
1670 {
1671 Err(anyhow!("access denied"))?;
1672 }
1673
1674 self.store()
1675 .await
1676 .leave_channel(request.sender_id, channel_id);
1677
1678 Ok(())
1679 }
1680
1681 async fn send_channel_message(
1682 self: Arc<Self>,
1683 request: TypedEnvelope<proto::SendChannelMessage>,
1684 response: Response<proto::SendChannelMessage>,
1685 ) -> Result<()> {
1686 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1687 let user_id;
1688 let connection_ids;
1689 {
1690 let state = self.store().await;
1691 user_id = state.user_id_for_connection(request.sender_id)?;
1692 connection_ids = state.channel_connection_ids(channel_id)?;
1693 }
1694
1695 // Validate the message body.
1696 let body = request.payload.body.trim().to_string();
1697 if body.len() > MAX_MESSAGE_LEN {
1698 return Err(anyhow!("message is too long"))?;
1699 }
1700 if body.is_empty() {
1701 return Err(anyhow!("message can't be blank"))?;
1702 }
1703
1704 let timestamp = OffsetDateTime::now_utc();
1705 let nonce = request
1706 .payload
1707 .nonce
1708 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1709
1710 let message_id = self
1711 .app_state
1712 .db
1713 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1714 .await?
1715 .to_proto();
1716 let message = proto::ChannelMessage {
1717 sender_id: user_id.to_proto(),
1718 id: message_id,
1719 body,
1720 timestamp: timestamp.unix_timestamp() as u64,
1721 nonce: Some(nonce),
1722 };
1723 broadcast(request.sender_id, connection_ids, |conn_id| {
1724 self.peer.send(
1725 conn_id,
1726 proto::ChannelMessageSent {
1727 channel_id: channel_id.to_proto(),
1728 message: Some(message.clone()),
1729 },
1730 )
1731 });
1732 response.send(proto::SendChannelMessageResponse {
1733 message: Some(message),
1734 })?;
1735 Ok(())
1736 }
1737
1738 async fn get_channel_messages(
1739 self: Arc<Self>,
1740 request: TypedEnvelope<proto::GetChannelMessages>,
1741 response: Response<proto::GetChannelMessages>,
1742 ) -> Result<()> {
1743 let user_id = self
1744 .store()
1745 .await
1746 .user_id_for_connection(request.sender_id)?;
1747 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1748 if !self
1749 .app_state
1750 .db
1751 .can_user_access_channel(user_id, channel_id)
1752 .await?
1753 {
1754 Err(anyhow!("access denied"))?;
1755 }
1756
1757 let messages = self
1758 .app_state
1759 .db
1760 .get_channel_messages(
1761 channel_id,
1762 MESSAGE_COUNT_PER_PAGE,
1763 Some(MessageId::from_proto(request.payload.before_message_id)),
1764 )
1765 .await?
1766 .into_iter()
1767 .map(|msg| proto::ChannelMessage {
1768 id: msg.id.to_proto(),
1769 body: msg.body,
1770 timestamp: msg.sent_at.unix_timestamp() as u64,
1771 sender_id: msg.sender_id.to_proto(),
1772 nonce: Some(msg.nonce.as_u128().into()),
1773 })
1774 .collect::<Vec<_>>();
1775 response.send(proto::GetChannelMessagesResponse {
1776 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1777 messages,
1778 })?;
1779 Ok(())
1780 }
1781
1782 async fn update_diff_base(
1783 self: Arc<Server>,
1784 request: TypedEnvelope<proto::UpdateDiffBase>,
1785 ) -> Result<()> {
1786 let receiver_ids = self.store().await.project_connection_ids(
1787 ProjectId::from_proto(request.payload.project_id),
1788 request.sender_id,
1789 )?;
1790 broadcast(request.sender_id, receiver_ids, |connection_id| {
1791 self.peer
1792 .forward_send(request.sender_id, connection_id, request.payload.clone())
1793 });
1794 Ok(())
1795 }
1796
1797 async fn get_private_user_info(
1798 self: Arc<Self>,
1799 request: TypedEnvelope<proto::GetPrivateUserInfo>,
1800 response: Response<proto::GetPrivateUserInfo>,
1801 ) -> Result<()> {
1802 let user_id = self
1803 .store()
1804 .await
1805 .user_id_for_connection(request.sender_id)?;
1806 let metrics_id = self.app_state.db.get_user_metrics_id(user_id).await?;
1807 let user = self
1808 .app_state
1809 .db
1810 .get_user_by_id(user_id)
1811 .await?
1812 .ok_or_else(|| anyhow!("user not found"))?;
1813 response.send(proto::GetPrivateUserInfoResponse {
1814 metrics_id,
1815 staff: user.admin,
1816 })?;
1817 Ok(())
1818 }
1819
1820 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1821 #[cfg(test)]
1822 tokio::task::yield_now().await;
1823 let guard = self.store.lock().await;
1824 #[cfg(test)]
1825 tokio::task::yield_now().await;
1826 StoreGuard {
1827 guard,
1828 _not_send: PhantomData,
1829 }
1830 }
1831
1832 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1833 ServerSnapshot {
1834 store: self.store().await,
1835 peer: &self.peer,
1836 }
1837 }
1838}
1839
1840impl<'a> Deref for StoreGuard<'a> {
1841 type Target = Store;
1842
1843 fn deref(&self) -> &Self::Target {
1844 &*self.guard
1845 }
1846}
1847
1848impl<'a> DerefMut for StoreGuard<'a> {
1849 fn deref_mut(&mut self) -> &mut Self::Target {
1850 &mut *self.guard
1851 }
1852}
1853
1854impl<'a> Drop for StoreGuard<'a> {
1855 fn drop(&mut self) {
1856 #[cfg(test)]
1857 self.check_invariants();
1858 }
1859}
1860
1861impl Executor for RealExecutor {
1862 type Sleep = Sleep;
1863
1864 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1865 tokio::task::spawn(future);
1866 }
1867
1868 fn sleep(&self, duration: Duration) -> Self::Sleep {
1869 tokio::time::sleep(duration)
1870 }
1871}
1872
1873fn broadcast<F>(
1874 sender_id: ConnectionId,
1875 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1876 mut f: F,
1877) where
1878 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1879{
1880 for receiver_id in receiver_ids {
1881 if receiver_id != sender_id {
1882 f(receiver_id).trace_err();
1883 }
1884 }
1885}
1886
1887lazy_static! {
1888 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1889}
1890
1891pub struct ProtocolVersion(u32);
1892
1893impl Header for ProtocolVersion {
1894 fn name() -> &'static HeaderName {
1895 &ZED_PROTOCOL_VERSION
1896 }
1897
1898 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1899 where
1900 Self: Sized,
1901 I: Iterator<Item = &'i axum::http::HeaderValue>,
1902 {
1903 let version = values
1904 .next()
1905 .ok_or_else(axum::headers::Error::invalid)?
1906 .to_str()
1907 .map_err(|_| axum::headers::Error::invalid())?
1908 .parse()
1909 .map_err(|_| axum::headers::Error::invalid())?;
1910 Ok(Self(version))
1911 }
1912
1913 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1914 values.extend([self.0.to_string().parse().unwrap()]);
1915 }
1916}
1917
1918pub fn routes(server: Arc<Server>) -> Router<Body> {
1919 Router::new()
1920 .route("/rpc", get(handle_websocket_request))
1921 .layer(
1922 ServiceBuilder::new()
1923 .layer(Extension(server.app_state.clone()))
1924 .layer(middleware::from_fn(auth::validate_header)),
1925 )
1926 .route("/metrics", get(handle_metrics))
1927 .layer(Extension(server))
1928}
1929
1930pub async fn handle_websocket_request(
1931 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1932 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1933 Extension(server): Extension<Arc<Server>>,
1934 Extension(user): Extension<User>,
1935 ws: WebSocketUpgrade,
1936) -> axum::response::Response {
1937 if protocol_version != rpc::PROTOCOL_VERSION {
1938 return (
1939 StatusCode::UPGRADE_REQUIRED,
1940 "client must be upgraded".to_string(),
1941 )
1942 .into_response();
1943 }
1944 let socket_address = socket_address.to_string();
1945 ws.on_upgrade(move |socket| {
1946 use util::ResultExt;
1947 let socket = socket
1948 .map_ok(to_tungstenite_message)
1949 .err_into()
1950 .with(|message| async move { Ok(to_axum_message(message)) });
1951 let connection = Connection::new(Box::pin(socket));
1952 async move {
1953 server
1954 .handle_connection(connection, socket_address, user, None, RealExecutor)
1955 .await
1956 .log_err();
1957 }
1958 })
1959}
1960
1961pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1962 // We call `store_mut` here for its side effects of updating metrics.
1963 let metrics = server.store().await.metrics();
1964 METRIC_CONNECTIONS.set(metrics.connections as _);
1965 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1966 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1967 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1968
1969 let encoder = prometheus::TextEncoder::new();
1970 let metric_families = prometheus::gather();
1971 match encoder.encode_to_string(&metric_families) {
1972 Ok(string) => (StatusCode::OK, string).into_response(),
1973 Err(error) => (
1974 StatusCode::INTERNAL_SERVER_ERROR,
1975 format!("failed to encode metrics {:?}", error),
1976 )
1977 .into_response(),
1978 }
1979}
1980
1981fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1982 match message {
1983 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1984 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1985 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1986 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1987 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1988 code: frame.code.into(),
1989 reason: frame.reason,
1990 })),
1991 }
1992}
1993
1994fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1995 match message {
1996 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1997 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1998 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1999 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
2000 AxumMessage::Close(frame) => {
2001 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
2002 code: frame.code.into(),
2003 reason: frame.reason,
2004 }))
2005 }
2006 }
2007}
2008
2009pub trait ResultExt {
2010 type Ok;
2011
2012 fn trace_err(self) -> Option<Self::Ok>;
2013}
2014
2015impl<T, E> ResultExt for Result<T, E>
2016where
2017 E: std::fmt::Debug,
2018{
2019 type Ok = T;
2020
2021 fn trace_err(self) -> Option<T> {
2022 match self {
2023 Ok(value) => Some(value),
2024 Err(error) => {
2025 tracing::error!("{:?}", error);
2026 None
2027 }
2028 }
2029 }
2030}