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