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