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