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 .await;
370
371 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
372
373 if let Some(send_connection_id) = send_connection_id.as_mut() {
374 let _ = send_connection_id.send(connection_id).await;
375 }
376
377 if !user.connected_once {
378 this.peer.send(connection_id, proto::ShowContacts {})?;
379 this.app_state.db.set_user_connected_once(user_id, true).await?;
380 }
381
382 let (contacts, invite_code) = future::try_join(
383 this.app_state.db.get_contacts(user_id),
384 this.app_state.db.get_invite_code_for_user(user_id)
385 ).await?;
386
387 {
388 let mut store = this.store().await;
389 let incoming_call = store.add_connection(connection_id, user_id, user.admin);
390 if let Some(incoming_call) = incoming_call {
391 this.peer.send(connection_id, incoming_call)?;
392 }
393
394 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
395
396 if let Some((code, count)) = invite_code {
397 this.peer.send(connection_id, proto::UpdateInviteInfo {
398 url: format!("{}{}", this.app_state.invite_link_prefix, code),
399 count,
400 })?;
401 }
402 }
403 this.update_user_contacts(user_id).await?;
404
405 let handle_io = handle_io.fuse();
406 futures::pin_mut!(handle_io);
407
408 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
409 // This prevents deadlocks when e.g., client A performs a request to client B and
410 // client B performs a request to client A. If both clients stop processing further
411 // messages until their respective request completes, they won't have a chance to
412 // respond to the other client's request and cause a deadlock.
413 //
414 // This arrangement ensures we will attempt to process earlier messages first, but fall
415 // back to processing messages arrived later in the spirit of making progress.
416 let mut foreground_message_handlers = FuturesUnordered::new();
417 loop {
418 let next_message = incoming_rx.next().fuse();
419 futures::pin_mut!(next_message);
420 futures::select_biased! {
421 result = handle_io => {
422 if let Err(error) = result {
423 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
424 }
425 break;
426 }
427 _ = foreground_message_handlers.next() => {}
428 message = next_message => {
429 if let Some(message) = message {
430 let type_name = message.payload_type_name();
431 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
432 let span_enter = span.enter();
433 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
434 let notifications = this.notifications.clone();
435 let is_background = message.is_background();
436 let handle_message = (handler)(this.clone(), message);
437
438 drop(span_enter);
439 let handle_message = async move {
440 handle_message.await;
441 if let Some(mut notifications) = notifications {
442 let _ = notifications.send(()).await;
443 }
444 }.instrument(span);
445
446 if is_background {
447 executor.spawn_detached(handle_message);
448 } else {
449 foreground_message_handlers.push(handle_message);
450 }
451 } else {
452 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
453 }
454 } else {
455 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
456 break;
457 }
458 }
459 }
460 }
461
462 drop(foreground_message_handlers);
463 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
464 if let Err(error) = this.sign_out(connection_id).await {
465 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
466 }
467
468 Ok(())
469 }.instrument(span)
470 }
471
472 #[instrument(skip(self), err)]
473 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
474 self.peer.disconnect(connection_id);
475
476 let mut projects_to_unshare = Vec::new();
477 let mut contacts_to_update = HashSet::default();
478 {
479 let mut store = self.store().await;
480 let removed_connection = store.remove_connection(connection_id)?;
481
482 for project in removed_connection.hosted_projects {
483 projects_to_unshare.push(project.id);
484 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
485 self.peer.send(
486 conn_id,
487 proto::UnshareProject {
488 project_id: project.id.to_proto(),
489 },
490 )
491 });
492 }
493
494 for project in removed_connection.guest_projects {
495 broadcast(connection_id, project.connection_ids, |conn_id| {
496 self.peer.send(
497 conn_id,
498 proto::RemoveProjectCollaborator {
499 project_id: project.id.to_proto(),
500 peer_id: connection_id.0,
501 },
502 )
503 });
504 }
505
506 for connection_id in removed_connection.canceled_call_connection_ids {
507 self.peer
508 .send(connection_id, proto::CallCanceled {})
509 .trace_err();
510 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
511 }
512
513 if let Some(room) = removed_connection
514 .room_id
515 .and_then(|room_id| store.room(room_id))
516 {
517 self.room_updated(room);
518 }
519
520 contacts_to_update.insert(removed_connection.user_id);
521 };
522
523 for user_id in contacts_to_update {
524 self.update_user_contacts(user_id).await.trace_err();
525 }
526
527 for project_id in projects_to_unshare {
528 self.app_state
529 .db
530 .unregister_project(project_id)
531 .await
532 .trace_err();
533 }
534
535 Ok(())
536 }
537
538 pub async fn invite_code_redeemed(
539 self: &Arc<Self>,
540 inviter_id: UserId,
541 invitee_id: UserId,
542 ) -> Result<()> {
543 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
544 if let Some(code) = &user.invite_code {
545 let store = self.store().await;
546 let invitee_contact = store.contact_for_user(invitee_id, true);
547 for connection_id in store.connection_ids_for_user(inviter_id) {
548 self.peer.send(
549 connection_id,
550 proto::UpdateContacts {
551 contacts: vec![invitee_contact.clone()],
552 ..Default::default()
553 },
554 )?;
555 self.peer.send(
556 connection_id,
557 proto::UpdateInviteInfo {
558 url: format!("{}{}", self.app_state.invite_link_prefix, &code),
559 count: user.invite_count as u32,
560 },
561 )?;
562 }
563 }
564 }
565 Ok(())
566 }
567
568 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
569 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
570 if let Some(invite_code) = &user.invite_code {
571 let store = self.store().await;
572 for connection_id in store.connection_ids_for_user(user_id) {
573 self.peer.send(
574 connection_id,
575 proto::UpdateInviteInfo {
576 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
577 count: user.invite_count as u32,
578 },
579 )?;
580 }
581 }
582 }
583 Ok(())
584 }
585
586 async fn ping(
587 self: Arc<Server>,
588 _: TypedEnvelope<proto::Ping>,
589 response: Response<proto::Ping>,
590 ) -> Result<()> {
591 response.send(proto::Ack {})?;
592 Ok(())
593 }
594
595 async fn create_room(
596 self: Arc<Server>,
597 request: TypedEnvelope<proto::CreateRoom>,
598 response: Response<proto::CreateRoom>,
599 ) -> Result<()> {
600 let user_id;
601 let room_id;
602 {
603 let mut store = self.store().await;
604 user_id = store.user_id_for_connection(request.sender_id)?;
605 room_id = store.create_room(request.sender_id)?;
606 }
607 response.send(proto::CreateRoomResponse { id: room_id })?;
608 self.update_user_contacts(user_id).await?;
609 Ok(())
610 }
611
612 async fn join_room(
613 self: Arc<Server>,
614 request: TypedEnvelope<proto::JoinRoom>,
615 response: Response<proto::JoinRoom>,
616 ) -> Result<()> {
617 let user_id;
618 {
619 let mut store = self.store().await;
620 user_id = store.user_id_for_connection(request.sender_id)?;
621 let (room, recipient_connection_ids) =
622 store.join_room(request.payload.id, request.sender_id)?;
623 for recipient_id in recipient_connection_ids {
624 self.peer
625 .send(recipient_id, proto::CallCanceled {})
626 .trace_err();
627 }
628 response.send(proto::JoinRoomResponse {
629 room: Some(room.clone()),
630 })?;
631 self.room_updated(room);
632 }
633 self.update_user_contacts(user_id).await?;
634 Ok(())
635 }
636
637 async fn leave_room(self: Arc<Server>, message: TypedEnvelope<proto::LeaveRoom>) -> Result<()> {
638 let mut contacts_to_update = HashSet::default();
639 {
640 let mut store = self.store().await;
641 let user_id = store.user_id_for_connection(message.sender_id)?;
642 let left_room = store.leave_room(message.payload.id, message.sender_id)?;
643 contacts_to_update.insert(user_id);
644
645 for project in left_room.unshared_projects {
646 for connection_id in project.connection_ids() {
647 self.peer.send(
648 connection_id,
649 proto::UnshareProject {
650 project_id: project.id.to_proto(),
651 },
652 )?;
653 }
654 }
655
656 for project in left_room.left_projects {
657 if project.remove_collaborator {
658 for connection_id in project.connection_ids {
659 self.peer.send(
660 connection_id,
661 proto::RemoveProjectCollaborator {
662 project_id: project.id.to_proto(),
663 peer_id: message.sender_id.0,
664 },
665 )?;
666 }
667
668 self.peer.send(
669 message.sender_id,
670 proto::UnshareProject {
671 project_id: project.id.to_proto(),
672 },
673 )?;
674 }
675 }
676
677 if let Some(room) = left_room.room {
678 self.room_updated(room);
679 }
680
681 for connection_id in left_room.canceled_call_connection_ids {
682 self.peer
683 .send(connection_id, proto::CallCanceled {})
684 .trace_err();
685 contacts_to_update.extend(store.user_id_for_connection(connection_id).ok());
686 }
687 }
688
689 for user_id in contacts_to_update {
690 self.update_user_contacts(user_id).await?;
691 }
692
693 Ok(())
694 }
695
696 async fn call(
697 self: Arc<Server>,
698 request: TypedEnvelope<proto::Call>,
699 response: Response<proto::Call>,
700 ) -> Result<()> {
701 let caller_user_id = self
702 .store()
703 .await
704 .user_id_for_connection(request.sender_id)?;
705 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
706 let initial_project_id = request
707 .payload
708 .initial_project_id
709 .map(ProjectId::from_proto);
710 if !self
711 .app_state
712 .db
713 .has_contact(caller_user_id, recipient_user_id)
714 .await?
715 {
716 return Err(anyhow!("cannot call a user who isn't a contact"))?;
717 }
718
719 let room_id = request.payload.room_id;
720 let mut calls = {
721 let mut store = self.store().await;
722 let (room, recipient_connection_ids, incoming_call) = store.call(
723 room_id,
724 recipient_user_id,
725 initial_project_id,
726 request.sender_id,
727 )?;
728 self.room_updated(room);
729 recipient_connection_ids
730 .into_iter()
731 .map(|recipient_connection_id| {
732 self.peer
733 .request(recipient_connection_id, incoming_call.clone())
734 })
735 .collect::<FuturesUnordered<_>>()
736 };
737 self.update_user_contacts(recipient_user_id).await?;
738
739 while let Some(call_response) = calls.next().await {
740 match call_response.as_ref() {
741 Ok(_) => {
742 response.send(proto::Ack {})?;
743 return Ok(());
744 }
745 Err(_) => {
746 call_response.trace_err();
747 }
748 }
749 }
750
751 {
752 let mut store = self.store().await;
753 let room = store.call_failed(room_id, recipient_user_id)?;
754 self.room_updated(&room);
755 }
756 self.update_user_contacts(recipient_user_id).await?;
757
758 Err(anyhow!("failed to ring call recipient"))?
759 }
760
761 async fn cancel_call(
762 self: Arc<Server>,
763 request: TypedEnvelope<proto::CancelCall>,
764 response: Response<proto::CancelCall>,
765 ) -> Result<()> {
766 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
767 {
768 let mut store = self.store().await;
769 let (room, recipient_connection_ids) = store.cancel_call(
770 request.payload.room_id,
771 recipient_user_id,
772 request.sender_id,
773 )?;
774 for recipient_id in recipient_connection_ids {
775 self.peer
776 .send(recipient_id, proto::CallCanceled {})
777 .trace_err();
778 }
779 self.room_updated(room);
780 response.send(proto::Ack {})?;
781 }
782 self.update_user_contacts(recipient_user_id).await?;
783 Ok(())
784 }
785
786 async fn decline_call(
787 self: Arc<Server>,
788 message: TypedEnvelope<proto::DeclineCall>,
789 ) -> Result<()> {
790 let recipient_user_id;
791 {
792 let mut store = self.store().await;
793 recipient_user_id = store.user_id_for_connection(message.sender_id)?;
794 let (room, recipient_connection_ids) =
795 store.decline_call(message.payload.room_id, message.sender_id)?;
796 for recipient_id in recipient_connection_ids {
797 self.peer
798 .send(recipient_id, proto::CallCanceled {})
799 .trace_err();
800 }
801 self.room_updated(room);
802 }
803 self.update_user_contacts(recipient_user_id).await?;
804 Ok(())
805 }
806
807 async fn update_participant_location(
808 self: Arc<Server>,
809 request: TypedEnvelope<proto::UpdateParticipantLocation>,
810 response: Response<proto::UpdateParticipantLocation>,
811 ) -> Result<()> {
812 let room_id = request.payload.room_id;
813 let location = request
814 .payload
815 .location
816 .ok_or_else(|| anyhow!("invalid location"))?;
817 let mut store = self.store().await;
818 let room = store.update_participant_location(room_id, location, request.sender_id)?;
819 self.room_updated(room);
820 response.send(proto::Ack {})?;
821 Ok(())
822 }
823
824 fn room_updated(&self, room: &proto::Room) {
825 for participant in &room.participants {
826 self.peer
827 .send(
828 ConnectionId(participant.peer_id),
829 proto::RoomUpdated {
830 room: Some(room.clone()),
831 },
832 )
833 .trace_err();
834 }
835 }
836
837 async fn share_project(
838 self: Arc<Server>,
839 request: TypedEnvelope<proto::ShareProject>,
840 response: Response<proto::ShareProject>,
841 ) -> Result<()> {
842 let user_id = self
843 .store()
844 .await
845 .user_id_for_connection(request.sender_id)?;
846 let project_id = self.app_state.db.register_project(user_id).await?;
847 let mut store = self.store().await;
848 let room = store.share_project(
849 request.payload.room_id,
850 project_id,
851 request.payload.worktrees,
852 request.sender_id,
853 )?;
854 response.send(proto::ShareProjectResponse {
855 project_id: project_id.to_proto(),
856 })?;
857 self.room_updated(room);
858
859 Ok(())
860 }
861
862 async fn unshare_project(
863 self: Arc<Server>,
864 message: TypedEnvelope<proto::UnshareProject>,
865 ) -> Result<()> {
866 let project_id = ProjectId::from_proto(message.payload.project_id);
867 let mut store = self.store().await;
868 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
869 broadcast(
870 message.sender_id,
871 project.guest_connection_ids(),
872 |conn_id| self.peer.send(conn_id, message.payload.clone()),
873 );
874 self.room_updated(room);
875
876 Ok(())
877 }
878
879 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
880 let contacts = self.app_state.db.get_contacts(user_id).await?;
881 let store = self.store().await;
882 let updated_contact = store.contact_for_user(user_id, false);
883 for contact in contacts {
884 if let db::Contact::Accepted {
885 user_id: contact_user_id,
886 ..
887 } = contact
888 {
889 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
890 self.peer
891 .send(
892 contact_conn_id,
893 proto::UpdateContacts {
894 contacts: vec![updated_contact.clone()],
895 remove_contacts: Default::default(),
896 incoming_requests: Default::default(),
897 remove_incoming_requests: Default::default(),
898 outgoing_requests: Default::default(),
899 remove_outgoing_requests: Default::default(),
900 },
901 )
902 .trace_err();
903 }
904 }
905 }
906 Ok(())
907 }
908
909 async fn join_project(
910 self: Arc<Server>,
911 request: TypedEnvelope<proto::JoinProject>,
912 response: Response<proto::JoinProject>,
913 ) -> Result<()> {
914 let project_id = ProjectId::from_proto(request.payload.project_id);
915
916 let host_user_id;
917 let guest_user_id;
918 let host_connection_id;
919 {
920 let state = self.store().await;
921 let project = state.project(project_id)?;
922 host_user_id = project.host.user_id;
923 host_connection_id = project.host_connection_id;
924 guest_user_id = state.user_id_for_connection(request.sender_id)?;
925 };
926
927 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
928
929 let mut store = self.store().await;
930 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
931 let peer_count = project.guests.len();
932 let mut collaborators = Vec::with_capacity(peer_count);
933 collaborators.push(proto::Collaborator {
934 peer_id: project.host_connection_id.0,
935 replica_id: 0,
936 user_id: project.host.user_id.to_proto(),
937 });
938 let worktrees = project
939 .worktrees
940 .iter()
941 .map(|(id, worktree)| proto::WorktreeMetadata {
942 id: *id,
943 root_name: worktree.root_name.clone(),
944 visible: worktree.visible,
945 })
946 .collect::<Vec<_>>();
947
948 // Add all guests other than the requesting user's own connections as collaborators
949 for (guest_conn_id, guest) in &project.guests {
950 if request.sender_id != *guest_conn_id {
951 collaborators.push(proto::Collaborator {
952 peer_id: guest_conn_id.0,
953 replica_id: guest.replica_id as u32,
954 user_id: guest.user_id.to_proto(),
955 });
956 }
957 }
958
959 for conn_id in project.connection_ids() {
960 if conn_id != request.sender_id {
961 self.peer.send(
962 conn_id,
963 proto::AddProjectCollaborator {
964 project_id: project_id.to_proto(),
965 collaborator: Some(proto::Collaborator {
966 peer_id: request.sender_id.0,
967 replica_id: replica_id as u32,
968 user_id: guest_user_id.to_proto(),
969 }),
970 },
971 )?;
972 }
973 }
974
975 // First, we send the metadata associated with each worktree.
976 response.send(proto::JoinProjectResponse {
977 worktrees: worktrees.clone(),
978 replica_id: replica_id as u32,
979 collaborators: collaborators.clone(),
980 language_servers: project.language_servers.clone(),
981 })?;
982
983 for (worktree_id, worktree) in &project.worktrees {
984 #[cfg(any(test, feature = "test-support"))]
985 const MAX_CHUNK_SIZE: usize = 2;
986 #[cfg(not(any(test, feature = "test-support")))]
987 const MAX_CHUNK_SIZE: usize = 256;
988
989 // Stream this worktree's entries.
990 let message = proto::UpdateWorktree {
991 project_id: project_id.to_proto(),
992 worktree_id: *worktree_id,
993 root_name: worktree.root_name.clone(),
994 updated_entries: worktree.entries.values().cloned().collect(),
995 removed_entries: Default::default(),
996 scan_id: worktree.scan_id,
997 is_last_update: worktree.is_complete,
998 };
999 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1000 self.peer.send(request.sender_id, update.clone())?;
1001 }
1002
1003 // Stream this worktree's diagnostics.
1004 for summary in worktree.diagnostic_summaries.values() {
1005 self.peer.send(
1006 request.sender_id,
1007 proto::UpdateDiagnosticSummary {
1008 project_id: project_id.to_proto(),
1009 worktree_id: *worktree_id,
1010 summary: Some(summary.clone()),
1011 },
1012 )?;
1013 }
1014 }
1015
1016 Ok(())
1017 }
1018
1019 async fn leave_project(
1020 self: Arc<Server>,
1021 request: TypedEnvelope<proto::LeaveProject>,
1022 ) -> Result<()> {
1023 let sender_id = request.sender_id;
1024 let project_id = ProjectId::from_proto(request.payload.project_id);
1025 let project;
1026 {
1027 let mut store = self.store().await;
1028 project = store.leave_project(project_id, sender_id)?;
1029 tracing::info!(
1030 %project_id,
1031 host_user_id = %project.host_user_id,
1032 host_connection_id = %project.host_connection_id,
1033 "leave project"
1034 );
1035
1036 if project.remove_collaborator {
1037 broadcast(sender_id, project.connection_ids, |conn_id| {
1038 self.peer.send(
1039 conn_id,
1040 proto::RemoveProjectCollaborator {
1041 project_id: project_id.to_proto(),
1042 peer_id: sender_id.0,
1043 },
1044 )
1045 });
1046 }
1047 }
1048
1049 Ok(())
1050 }
1051
1052 async fn update_project(
1053 self: Arc<Server>,
1054 request: TypedEnvelope<proto::UpdateProject>,
1055 ) -> Result<()> {
1056 let project_id = ProjectId::from_proto(request.payload.project_id);
1057 {
1058 let mut state = self.store().await;
1059 let guest_connection_ids = state
1060 .read_project(project_id, request.sender_id)?
1061 .guest_connection_ids();
1062 let room =
1063 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
1064 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1065 self.peer
1066 .forward_send(request.sender_id, connection_id, request.payload.clone())
1067 });
1068 self.room_updated(room);
1069 };
1070
1071 Ok(())
1072 }
1073
1074 async fn register_project_activity(
1075 self: Arc<Server>,
1076 request: TypedEnvelope<proto::RegisterProjectActivity>,
1077 ) -> Result<()> {
1078 self.store().await.register_project_activity(
1079 ProjectId::from_proto(request.payload.project_id),
1080 request.sender_id,
1081 )?;
1082 Ok(())
1083 }
1084
1085 async fn update_worktree(
1086 self: Arc<Server>,
1087 request: TypedEnvelope<proto::UpdateWorktree>,
1088 response: Response<proto::UpdateWorktree>,
1089 ) -> Result<()> {
1090 let project_id = ProjectId::from_proto(request.payload.project_id);
1091 let worktree_id = request.payload.worktree_id;
1092 let connection_ids = self.store().await.update_worktree(
1093 request.sender_id,
1094 project_id,
1095 worktree_id,
1096 &request.payload.root_name,
1097 &request.payload.removed_entries,
1098 &request.payload.updated_entries,
1099 request.payload.scan_id,
1100 request.payload.is_last_update,
1101 )?;
1102
1103 broadcast(request.sender_id, connection_ids, |connection_id| {
1104 self.peer
1105 .forward_send(request.sender_id, connection_id, request.payload.clone())
1106 });
1107 response.send(proto::Ack {})?;
1108 Ok(())
1109 }
1110
1111 async fn update_worktree_extensions(
1112 self: Arc<Server>,
1113 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1114 ) -> Result<()> {
1115 let project_id = ProjectId::from_proto(request.payload.project_id);
1116 let worktree_id = request.payload.worktree_id;
1117 let extensions = request
1118 .payload
1119 .extensions
1120 .into_iter()
1121 .zip(request.payload.counts)
1122 .collect();
1123 self.app_state
1124 .db
1125 .update_worktree_extensions(project_id, worktree_id, extensions)
1126 .await?;
1127 Ok(())
1128 }
1129
1130 async fn update_diagnostic_summary(
1131 self: Arc<Server>,
1132 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1133 ) -> Result<()> {
1134 let summary = request
1135 .payload
1136 .summary
1137 .clone()
1138 .ok_or_else(|| anyhow!("invalid summary"))?;
1139 let receiver_ids = self.store().await.update_diagnostic_summary(
1140 ProjectId::from_proto(request.payload.project_id),
1141 request.payload.worktree_id,
1142 request.sender_id,
1143 summary,
1144 )?;
1145
1146 broadcast(request.sender_id, receiver_ids, |connection_id| {
1147 self.peer
1148 .forward_send(request.sender_id, connection_id, request.payload.clone())
1149 });
1150 Ok(())
1151 }
1152
1153 async fn start_language_server(
1154 self: Arc<Server>,
1155 request: TypedEnvelope<proto::StartLanguageServer>,
1156 ) -> Result<()> {
1157 let receiver_ids = self.store().await.start_language_server(
1158 ProjectId::from_proto(request.payload.project_id),
1159 request.sender_id,
1160 request
1161 .payload
1162 .server
1163 .clone()
1164 .ok_or_else(|| anyhow!("invalid language server"))?,
1165 )?;
1166 broadcast(request.sender_id, receiver_ids, |connection_id| {
1167 self.peer
1168 .forward_send(request.sender_id, connection_id, request.payload.clone())
1169 });
1170 Ok(())
1171 }
1172
1173 async fn update_language_server(
1174 self: Arc<Server>,
1175 request: TypedEnvelope<proto::UpdateLanguageServer>,
1176 ) -> Result<()> {
1177 let receiver_ids = self.store().await.project_connection_ids(
1178 ProjectId::from_proto(request.payload.project_id),
1179 request.sender_id,
1180 )?;
1181 broadcast(request.sender_id, receiver_ids, |connection_id| {
1182 self.peer
1183 .forward_send(request.sender_id, connection_id, request.payload.clone())
1184 });
1185 Ok(())
1186 }
1187
1188 async fn forward_project_request<T>(
1189 self: Arc<Server>,
1190 request: TypedEnvelope<T>,
1191 response: Response<T>,
1192 ) -> Result<()>
1193 where
1194 T: EntityMessage + RequestMessage,
1195 {
1196 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1197 let host_connection_id = self
1198 .store()
1199 .await
1200 .read_project(project_id, request.sender_id)?
1201 .host_connection_id;
1202 let payload = self
1203 .peer
1204 .forward_request(request.sender_id, host_connection_id, request.payload)
1205 .await?;
1206
1207 // Ensure project still exists by the time we get the response from the host.
1208 self.store()
1209 .await
1210 .read_project(project_id, request.sender_id)?;
1211
1212 response.send(payload)?;
1213 Ok(())
1214 }
1215
1216 async fn save_buffer(
1217 self: Arc<Server>,
1218 request: TypedEnvelope<proto::SaveBuffer>,
1219 response: Response<proto::SaveBuffer>,
1220 ) -> Result<()> {
1221 let project_id = ProjectId::from_proto(request.payload.project_id);
1222 let host = self
1223 .store()
1224 .await
1225 .read_project(project_id, request.sender_id)?
1226 .host_connection_id;
1227 let response_payload = self
1228 .peer
1229 .forward_request(request.sender_id, host, request.payload.clone())
1230 .await?;
1231
1232 let mut guests = self
1233 .store()
1234 .await
1235 .read_project(project_id, request.sender_id)?
1236 .connection_ids();
1237 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1238 broadcast(host, guests, |conn_id| {
1239 self.peer
1240 .forward_send(host, conn_id, response_payload.clone())
1241 });
1242 response.send(response_payload)?;
1243 Ok(())
1244 }
1245
1246 async fn create_buffer_for_peer(
1247 self: Arc<Server>,
1248 request: TypedEnvelope<proto::CreateBufferForPeer>,
1249 ) -> Result<()> {
1250 self.peer.forward_send(
1251 request.sender_id,
1252 ConnectionId(request.payload.peer_id),
1253 request.payload,
1254 )?;
1255 Ok(())
1256 }
1257
1258 async fn update_buffer(
1259 self: Arc<Server>,
1260 request: TypedEnvelope<proto::UpdateBuffer>,
1261 response: Response<proto::UpdateBuffer>,
1262 ) -> Result<()> {
1263 let project_id = ProjectId::from_proto(request.payload.project_id);
1264 let receiver_ids = {
1265 let mut store = self.store().await;
1266 store.register_project_activity(project_id, request.sender_id)?;
1267 store.project_connection_ids(project_id, request.sender_id)?
1268 };
1269
1270 broadcast(request.sender_id, receiver_ids, |connection_id| {
1271 self.peer
1272 .forward_send(request.sender_id, connection_id, request.payload.clone())
1273 });
1274 response.send(proto::Ack {})?;
1275 Ok(())
1276 }
1277
1278 async fn update_buffer_file(
1279 self: Arc<Server>,
1280 request: TypedEnvelope<proto::UpdateBufferFile>,
1281 ) -> Result<()> {
1282 let receiver_ids = self.store().await.project_connection_ids(
1283 ProjectId::from_proto(request.payload.project_id),
1284 request.sender_id,
1285 )?;
1286 broadcast(request.sender_id, receiver_ids, |connection_id| {
1287 self.peer
1288 .forward_send(request.sender_id, connection_id, request.payload.clone())
1289 });
1290 Ok(())
1291 }
1292
1293 async fn buffer_reloaded(
1294 self: Arc<Server>,
1295 request: TypedEnvelope<proto::BufferReloaded>,
1296 ) -> Result<()> {
1297 let receiver_ids = self.store().await.project_connection_ids(
1298 ProjectId::from_proto(request.payload.project_id),
1299 request.sender_id,
1300 )?;
1301 broadcast(request.sender_id, receiver_ids, |connection_id| {
1302 self.peer
1303 .forward_send(request.sender_id, connection_id, request.payload.clone())
1304 });
1305 Ok(())
1306 }
1307
1308 async fn buffer_saved(
1309 self: Arc<Server>,
1310 request: TypedEnvelope<proto::BufferSaved>,
1311 ) -> Result<()> {
1312 let receiver_ids = self.store().await.project_connection_ids(
1313 ProjectId::from_proto(request.payload.project_id),
1314 request.sender_id,
1315 )?;
1316 broadcast(request.sender_id, receiver_ids, |connection_id| {
1317 self.peer
1318 .forward_send(request.sender_id, connection_id, request.payload.clone())
1319 });
1320 Ok(())
1321 }
1322
1323 async fn follow(
1324 self: Arc<Self>,
1325 request: TypedEnvelope<proto::Follow>,
1326 response: Response<proto::Follow>,
1327 ) -> Result<()> {
1328 let project_id = ProjectId::from_proto(request.payload.project_id);
1329 let leader_id = ConnectionId(request.payload.leader_id);
1330 let follower_id = request.sender_id;
1331 {
1332 let mut store = self.store().await;
1333 if !store
1334 .project_connection_ids(project_id, follower_id)?
1335 .contains(&leader_id)
1336 {
1337 Err(anyhow!("no such peer"))?;
1338 }
1339
1340 store.register_project_activity(project_id, follower_id)?;
1341 }
1342
1343 let mut response_payload = self
1344 .peer
1345 .forward_request(request.sender_id, leader_id, request.payload)
1346 .await?;
1347 response_payload
1348 .views
1349 .retain(|view| view.leader_id != Some(follower_id.0));
1350 response.send(response_payload)?;
1351 Ok(())
1352 }
1353
1354 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1355 let project_id = ProjectId::from_proto(request.payload.project_id);
1356 let leader_id = ConnectionId(request.payload.leader_id);
1357 let mut store = self.store().await;
1358 if !store
1359 .project_connection_ids(project_id, request.sender_id)?
1360 .contains(&leader_id)
1361 {
1362 Err(anyhow!("no such peer"))?;
1363 }
1364 store.register_project_activity(project_id, request.sender_id)?;
1365 self.peer
1366 .forward_send(request.sender_id, leader_id, request.payload)?;
1367 Ok(())
1368 }
1369
1370 async fn update_followers(
1371 self: Arc<Self>,
1372 request: TypedEnvelope<proto::UpdateFollowers>,
1373 ) -> Result<()> {
1374 let project_id = ProjectId::from_proto(request.payload.project_id);
1375 let mut store = self.store().await;
1376 store.register_project_activity(project_id, request.sender_id)?;
1377 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1378 let leader_id = request
1379 .payload
1380 .variant
1381 .as_ref()
1382 .and_then(|variant| match variant {
1383 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1384 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1385 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1386 });
1387 for follower_id in &request.payload.follower_ids {
1388 let follower_id = ConnectionId(*follower_id);
1389 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1390 self.peer
1391 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1392 }
1393 }
1394 Ok(())
1395 }
1396
1397 async fn get_channels(
1398 self: Arc<Server>,
1399 request: TypedEnvelope<proto::GetChannels>,
1400 response: Response<proto::GetChannels>,
1401 ) -> Result<()> {
1402 let user_id = self
1403 .store()
1404 .await
1405 .user_id_for_connection(request.sender_id)?;
1406 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1407 response.send(proto::GetChannelsResponse {
1408 channels: channels
1409 .into_iter()
1410 .map(|chan| proto::Channel {
1411 id: chan.id.to_proto(),
1412 name: chan.name,
1413 })
1414 .collect(),
1415 })?;
1416 Ok(())
1417 }
1418
1419 async fn get_users(
1420 self: Arc<Server>,
1421 request: TypedEnvelope<proto::GetUsers>,
1422 response: Response<proto::GetUsers>,
1423 ) -> Result<()> {
1424 let user_ids = request
1425 .payload
1426 .user_ids
1427 .into_iter()
1428 .map(UserId::from_proto)
1429 .collect();
1430 let users = self
1431 .app_state
1432 .db
1433 .get_users_by_ids(user_ids)
1434 .await?
1435 .into_iter()
1436 .map(|user| proto::User {
1437 id: user.id.to_proto(),
1438 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1439 github_login: user.github_login,
1440 })
1441 .collect();
1442 response.send(proto::UsersResponse { users })?;
1443 Ok(())
1444 }
1445
1446 async fn fuzzy_search_users(
1447 self: Arc<Server>,
1448 request: TypedEnvelope<proto::FuzzySearchUsers>,
1449 response: Response<proto::FuzzySearchUsers>,
1450 ) -> Result<()> {
1451 let user_id = self
1452 .store()
1453 .await
1454 .user_id_for_connection(request.sender_id)?;
1455 let query = request.payload.query;
1456 let db = &self.app_state.db;
1457 let users = match query.len() {
1458 0 => vec![],
1459 1 | 2 => db
1460 .get_user_by_github_account(&query, None)
1461 .await?
1462 .into_iter()
1463 .collect(),
1464 _ => db.fuzzy_search_users(&query, 10).await?,
1465 };
1466 let users = users
1467 .into_iter()
1468 .filter(|user| user.id != user_id)
1469 .map(|user| proto::User {
1470 id: user.id.to_proto(),
1471 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1472 github_login: user.github_login,
1473 })
1474 .collect();
1475 response.send(proto::UsersResponse { users })?;
1476 Ok(())
1477 }
1478
1479 async fn request_contact(
1480 self: Arc<Server>,
1481 request: TypedEnvelope<proto::RequestContact>,
1482 response: Response<proto::RequestContact>,
1483 ) -> Result<()> {
1484 let requester_id = self
1485 .store()
1486 .await
1487 .user_id_for_connection(request.sender_id)?;
1488 let responder_id = UserId::from_proto(request.payload.responder_id);
1489 if requester_id == responder_id {
1490 return Err(anyhow!("cannot add yourself as a contact"))?;
1491 }
1492
1493 self.app_state
1494 .db
1495 .send_contact_request(requester_id, responder_id)
1496 .await?;
1497
1498 // Update outgoing contact requests of requester
1499 let mut update = proto::UpdateContacts::default();
1500 update.outgoing_requests.push(responder_id.to_proto());
1501 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1502 self.peer.send(connection_id, update.clone())?;
1503 }
1504
1505 // Update incoming contact requests of responder
1506 let mut update = proto::UpdateContacts::default();
1507 update
1508 .incoming_requests
1509 .push(proto::IncomingContactRequest {
1510 requester_id: requester_id.to_proto(),
1511 should_notify: true,
1512 });
1513 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1514 self.peer.send(connection_id, update.clone())?;
1515 }
1516
1517 response.send(proto::Ack {})?;
1518 Ok(())
1519 }
1520
1521 async fn respond_to_contact_request(
1522 self: Arc<Server>,
1523 request: TypedEnvelope<proto::RespondToContactRequest>,
1524 response: Response<proto::RespondToContactRequest>,
1525 ) -> Result<()> {
1526 let responder_id = self
1527 .store()
1528 .await
1529 .user_id_for_connection(request.sender_id)?;
1530 let requester_id = UserId::from_proto(request.payload.requester_id);
1531 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1532 self.app_state
1533 .db
1534 .dismiss_contact_notification(responder_id, requester_id)
1535 .await?;
1536 } else {
1537 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1538 self.app_state
1539 .db
1540 .respond_to_contact_request(responder_id, requester_id, accept)
1541 .await?;
1542
1543 let store = self.store().await;
1544 // Update responder with new contact
1545 let mut update = proto::UpdateContacts::default();
1546 if accept {
1547 update
1548 .contacts
1549 .push(store.contact_for_user(requester_id, false));
1550 }
1551 update
1552 .remove_incoming_requests
1553 .push(requester_id.to_proto());
1554 for connection_id in store.connection_ids_for_user(responder_id) {
1555 self.peer.send(connection_id, update.clone())?;
1556 }
1557
1558 // Update requester with new contact
1559 let mut update = proto::UpdateContacts::default();
1560 if accept {
1561 update
1562 .contacts
1563 .push(store.contact_for_user(responder_id, true));
1564 }
1565 update
1566 .remove_outgoing_requests
1567 .push(responder_id.to_proto());
1568 for connection_id in store.connection_ids_for_user(requester_id) {
1569 self.peer.send(connection_id, update.clone())?;
1570 }
1571 }
1572
1573 response.send(proto::Ack {})?;
1574 Ok(())
1575 }
1576
1577 async fn remove_contact(
1578 self: Arc<Server>,
1579 request: TypedEnvelope<proto::RemoveContact>,
1580 response: Response<proto::RemoveContact>,
1581 ) -> Result<()> {
1582 let requester_id = self
1583 .store()
1584 .await
1585 .user_id_for_connection(request.sender_id)?;
1586 let responder_id = UserId::from_proto(request.payload.user_id);
1587 self.app_state
1588 .db
1589 .remove_contact(requester_id, responder_id)
1590 .await?;
1591
1592 // Update outgoing contact requests of requester
1593 let mut update = proto::UpdateContacts::default();
1594 update
1595 .remove_outgoing_requests
1596 .push(responder_id.to_proto());
1597 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1598 self.peer.send(connection_id, update.clone())?;
1599 }
1600
1601 // Update incoming contact requests of responder
1602 let mut update = proto::UpdateContacts::default();
1603 update
1604 .remove_incoming_requests
1605 .push(requester_id.to_proto());
1606 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1607 self.peer.send(connection_id, update.clone())?;
1608 }
1609
1610 response.send(proto::Ack {})?;
1611 Ok(())
1612 }
1613
1614 async fn join_channel(
1615 self: Arc<Self>,
1616 request: TypedEnvelope<proto::JoinChannel>,
1617 response: Response<proto::JoinChannel>,
1618 ) -> Result<()> {
1619 let user_id = self
1620 .store()
1621 .await
1622 .user_id_for_connection(request.sender_id)?;
1623 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1624 if !self
1625 .app_state
1626 .db
1627 .can_user_access_channel(user_id, channel_id)
1628 .await?
1629 {
1630 Err(anyhow!("access denied"))?;
1631 }
1632
1633 self.store()
1634 .await
1635 .join_channel(request.sender_id, channel_id);
1636 let messages = self
1637 .app_state
1638 .db
1639 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1640 .await?
1641 .into_iter()
1642 .map(|msg| proto::ChannelMessage {
1643 id: msg.id.to_proto(),
1644 body: msg.body,
1645 timestamp: msg.sent_at.unix_timestamp() as u64,
1646 sender_id: msg.sender_id.to_proto(),
1647 nonce: Some(msg.nonce.as_u128().into()),
1648 })
1649 .collect::<Vec<_>>();
1650 response.send(proto::JoinChannelResponse {
1651 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1652 messages,
1653 })?;
1654 Ok(())
1655 }
1656
1657 async fn leave_channel(
1658 self: Arc<Self>,
1659 request: TypedEnvelope<proto::LeaveChannel>,
1660 ) -> Result<()> {
1661 let user_id = self
1662 .store()
1663 .await
1664 .user_id_for_connection(request.sender_id)?;
1665 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1666 if !self
1667 .app_state
1668 .db
1669 .can_user_access_channel(user_id, channel_id)
1670 .await?
1671 {
1672 Err(anyhow!("access denied"))?;
1673 }
1674
1675 self.store()
1676 .await
1677 .leave_channel(request.sender_id, channel_id);
1678
1679 Ok(())
1680 }
1681
1682 async fn send_channel_message(
1683 self: Arc<Self>,
1684 request: TypedEnvelope<proto::SendChannelMessage>,
1685 response: Response<proto::SendChannelMessage>,
1686 ) -> Result<()> {
1687 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1688 let user_id;
1689 let connection_ids;
1690 {
1691 let state = self.store().await;
1692 user_id = state.user_id_for_connection(request.sender_id)?;
1693 connection_ids = state.channel_connection_ids(channel_id)?;
1694 }
1695
1696 // Validate the message body.
1697 let body = request.payload.body.trim().to_string();
1698 if body.len() > MAX_MESSAGE_LEN {
1699 return Err(anyhow!("message is too long"))?;
1700 }
1701 if body.is_empty() {
1702 return Err(anyhow!("message can't be blank"))?;
1703 }
1704
1705 let timestamp = OffsetDateTime::now_utc();
1706 let nonce = request
1707 .payload
1708 .nonce
1709 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1710
1711 let message_id = self
1712 .app_state
1713 .db
1714 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1715 .await?
1716 .to_proto();
1717 let message = proto::ChannelMessage {
1718 sender_id: user_id.to_proto(),
1719 id: message_id,
1720 body,
1721 timestamp: timestamp.unix_timestamp() as u64,
1722 nonce: Some(nonce),
1723 };
1724 broadcast(request.sender_id, connection_ids, |conn_id| {
1725 self.peer.send(
1726 conn_id,
1727 proto::ChannelMessageSent {
1728 channel_id: channel_id.to_proto(),
1729 message: Some(message.clone()),
1730 },
1731 )
1732 });
1733 response.send(proto::SendChannelMessageResponse {
1734 message: Some(message),
1735 })?;
1736 Ok(())
1737 }
1738
1739 async fn get_channel_messages(
1740 self: Arc<Self>,
1741 request: TypedEnvelope<proto::GetChannelMessages>,
1742 response: Response<proto::GetChannelMessages>,
1743 ) -> Result<()> {
1744 let user_id = self
1745 .store()
1746 .await
1747 .user_id_for_connection(request.sender_id)?;
1748 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1749 if !self
1750 .app_state
1751 .db
1752 .can_user_access_channel(user_id, channel_id)
1753 .await?
1754 {
1755 Err(anyhow!("access denied"))?;
1756 }
1757
1758 let messages = self
1759 .app_state
1760 .db
1761 .get_channel_messages(
1762 channel_id,
1763 MESSAGE_COUNT_PER_PAGE,
1764 Some(MessageId::from_proto(request.payload.before_message_id)),
1765 )
1766 .await?
1767 .into_iter()
1768 .map(|msg| proto::ChannelMessage {
1769 id: msg.id.to_proto(),
1770 body: msg.body,
1771 timestamp: msg.sent_at.unix_timestamp() as u64,
1772 sender_id: msg.sender_id.to_proto(),
1773 nonce: Some(msg.nonce.as_u128().into()),
1774 })
1775 .collect::<Vec<_>>();
1776 response.send(proto::GetChannelMessagesResponse {
1777 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1778 messages,
1779 })?;
1780 Ok(())
1781 }
1782
1783 async fn update_diff_base(
1784 self: Arc<Server>,
1785 request: TypedEnvelope<proto::UpdateDiffBase>,
1786 ) -> Result<()> {
1787 let receiver_ids = self.store().await.project_connection_ids(
1788 ProjectId::from_proto(request.payload.project_id),
1789 request.sender_id,
1790 )?;
1791 broadcast(request.sender_id, receiver_ids, |connection_id| {
1792 self.peer
1793 .forward_send(request.sender_id, connection_id, request.payload.clone())
1794 });
1795 Ok(())
1796 }
1797
1798 async fn get_private_user_info(
1799 self: Arc<Self>,
1800 request: TypedEnvelope<proto::GetPrivateUserInfo>,
1801 response: Response<proto::GetPrivateUserInfo>,
1802 ) -> Result<()> {
1803 let user_id = self
1804 .store()
1805 .await
1806 .user_id_for_connection(request.sender_id)?;
1807 let metrics_id = self.app_state.db.get_user_metrics_id(user_id).await?;
1808 let user = self
1809 .app_state
1810 .db
1811 .get_user_by_id(user_id)
1812 .await?
1813 .ok_or_else(|| anyhow!("user not found"))?;
1814 response.send(proto::GetPrivateUserInfoResponse {
1815 metrics_id,
1816 staff: user.admin,
1817 })?;
1818 Ok(())
1819 }
1820
1821 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1822 #[cfg(test)]
1823 tokio::task::yield_now().await;
1824 let guard = self.store.lock().await;
1825 #[cfg(test)]
1826 tokio::task::yield_now().await;
1827 StoreGuard {
1828 guard,
1829 _not_send: PhantomData,
1830 }
1831 }
1832
1833 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1834 ServerSnapshot {
1835 store: self.store().await,
1836 peer: &self.peer,
1837 }
1838 }
1839}
1840
1841impl<'a> Deref for StoreGuard<'a> {
1842 type Target = Store;
1843
1844 fn deref(&self) -> &Self::Target {
1845 &*self.guard
1846 }
1847}
1848
1849impl<'a> DerefMut for StoreGuard<'a> {
1850 fn deref_mut(&mut self) -> &mut Self::Target {
1851 &mut *self.guard
1852 }
1853}
1854
1855impl<'a> Drop for StoreGuard<'a> {
1856 fn drop(&mut self) {
1857 #[cfg(test)]
1858 self.check_invariants();
1859 }
1860}
1861
1862impl Executor for RealExecutor {
1863 type Sleep = Sleep;
1864
1865 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1866 tokio::task::spawn(future);
1867 }
1868
1869 fn sleep(&self, duration: Duration) -> Self::Sleep {
1870 tokio::time::sleep(duration)
1871 }
1872}
1873
1874fn broadcast<F>(
1875 sender_id: ConnectionId,
1876 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1877 mut f: F,
1878) where
1879 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1880{
1881 for receiver_id in receiver_ids {
1882 if receiver_id != sender_id {
1883 f(receiver_id).trace_err();
1884 }
1885 }
1886}
1887
1888lazy_static! {
1889 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1890}
1891
1892pub struct ProtocolVersion(u32);
1893
1894impl Header for ProtocolVersion {
1895 fn name() -> &'static HeaderName {
1896 &ZED_PROTOCOL_VERSION
1897 }
1898
1899 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1900 where
1901 Self: Sized,
1902 I: Iterator<Item = &'i axum::http::HeaderValue>,
1903 {
1904 let version = values
1905 .next()
1906 .ok_or_else(axum::headers::Error::invalid)?
1907 .to_str()
1908 .map_err(|_| axum::headers::Error::invalid())?
1909 .parse()
1910 .map_err(|_| axum::headers::Error::invalid())?;
1911 Ok(Self(version))
1912 }
1913
1914 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1915 values.extend([self.0.to_string().parse().unwrap()]);
1916 }
1917}
1918
1919pub fn routes(server: Arc<Server>) -> Router<Body> {
1920 Router::new()
1921 .route("/rpc", get(handle_websocket_request))
1922 .layer(
1923 ServiceBuilder::new()
1924 .layer(Extension(server.app_state.clone()))
1925 .layer(middleware::from_fn(auth::validate_header)),
1926 )
1927 .route("/metrics", get(handle_metrics))
1928 .layer(Extension(server))
1929}
1930
1931pub async fn handle_websocket_request(
1932 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1933 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1934 Extension(server): Extension<Arc<Server>>,
1935 Extension(user): Extension<User>,
1936 ws: WebSocketUpgrade,
1937) -> axum::response::Response {
1938 if protocol_version != rpc::PROTOCOL_VERSION {
1939 return (
1940 StatusCode::UPGRADE_REQUIRED,
1941 "client must be upgraded".to_string(),
1942 )
1943 .into_response();
1944 }
1945 let socket_address = socket_address.to_string();
1946 ws.on_upgrade(move |socket| {
1947 use util::ResultExt;
1948 let socket = socket
1949 .map_ok(to_tungstenite_message)
1950 .err_into()
1951 .with(|message| async move { Ok(to_axum_message(message)) });
1952 let connection = Connection::new(Box::pin(socket));
1953 async move {
1954 server
1955 .handle_connection(connection, socket_address, user, None, RealExecutor)
1956 .await
1957 .log_err();
1958 }
1959 })
1960}
1961
1962pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1963 // We call `store_mut` here for its side effects of updating metrics.
1964 let metrics = server.store().await.metrics();
1965 METRIC_CONNECTIONS.set(metrics.connections as _);
1966 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1967 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1968 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1969
1970 let encoder = prometheus::TextEncoder::new();
1971 let metric_families = prometheus::gather();
1972 match encoder.encode_to_string(&metric_families) {
1973 Ok(string) => (StatusCode::OK, string).into_response(),
1974 Err(error) => (
1975 StatusCode::INTERNAL_SERVER_ERROR,
1976 format!("failed to encode metrics {:?}", error),
1977 )
1978 .into_response(),
1979 }
1980}
1981
1982fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1983 match message {
1984 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1985 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1986 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1987 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1988 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1989 code: frame.code.into(),
1990 reason: frame.reason,
1991 })),
1992 }
1993}
1994
1995fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1996 match message {
1997 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1998 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1999 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
2000 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
2001 AxumMessage::Close(frame) => {
2002 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
2003 code: frame.code.into(),
2004 reason: frame.reason,
2005 }))
2006 }
2007 }
2008}
2009
2010pub trait ResultExt {
2011 type Ok;
2012
2013 fn trace_err(self) -> Option<Self::Ok>;
2014}
2015
2016impl<T, E> ResultExt for Result<T, E>
2017where
2018 E: std::fmt::Debug,
2019{
2020 type Ok = T;
2021
2022 fn trace_err(self) -> Option<T> {
2023 match self {
2024 Ok(value) => Some(value),
2025 Err(error) => {
2026 tracing::error!("{:?}", error);
2027 None
2028 }
2029 }
2030 }
2031}