1mod store;
2
3use crate::{
4 auth,
5 db::{self, ChannelId, MessageId, ProjectId, User, UserId},
6 AppState, Result,
7};
8use anyhow::anyhow;
9use async_tungstenite::tungstenite::{
10 protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
11};
12use axum::{
13 body::Body,
14 extract::{
15 ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
16 ConnectInfo, WebSocketUpgrade,
17 },
18 headers::{Header, HeaderName},
19 http::StatusCode,
20 middleware,
21 response::IntoResponse,
22 routing::get,
23 Extension, Router, TypedHeader,
24};
25use collections::HashMap;
26use futures::{
27 channel::mpsc,
28 future::{self, BoxFuture},
29 stream::FuturesUnordered,
30 FutureExt, SinkExt, StreamExt, TryStreamExt,
31};
32use lazy_static::lazy_static;
33use prometheus::{register_int_gauge, IntGauge};
34use rpc::{
35 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
36 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
37};
38use serde::{Serialize, Serializer};
39use std::{
40 any::TypeId,
41 future::Future,
42 marker::PhantomData,
43 net::SocketAddr,
44 ops::{Deref, DerefMut},
45 rc::Rc,
46 sync::{
47 atomic::{AtomicBool, Ordering::SeqCst},
48 Arc,
49 },
50 time::Duration,
51};
52use time::OffsetDateTime;
53use tokio::{
54 sync::{Mutex, MutexGuard},
55 time::Sleep,
56};
57use tower::ServiceBuilder;
58use tracing::{info_span, instrument, Instrument};
59
60pub use store::{Store, Worktree};
61
62lazy_static! {
63 static ref METRIC_CONNECTIONS: IntGauge =
64 register_int_gauge!("connections", "number of connections").unwrap();
65 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
66 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
67 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
68 register_int_gauge!("active_projects", "number of active projects").unwrap();
69 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
70 "shared_projects",
71 "number of open projects with one or more guests"
72 )
73 .unwrap();
74}
75
76type MessageHandler =
77 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
78
79struct Response<R> {
80 server: Arc<Server>,
81 receipt: Receipt<R>,
82 responded: Arc<AtomicBool>,
83}
84
85impl<R: RequestMessage> Response<R> {
86 fn send(self, payload: R::Response) -> Result<()> {
87 self.responded.store(true, SeqCst);
88 self.server.peer.respond(self.receipt, payload)?;
89 Ok(())
90 }
91}
92
93pub struct Server {
94 peer: Arc<Peer>,
95 pub(crate) store: Mutex<Store>,
96 app_state: Arc<AppState>,
97 handlers: HashMap<TypeId, MessageHandler>,
98 notifications: Option<mpsc::UnboundedSender<()>>,
99}
100
101pub trait Executor: Send + Clone {
102 type Sleep: Send + Future;
103 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
104 fn sleep(&self, duration: Duration) -> Self::Sleep;
105}
106
107#[derive(Clone)]
108pub struct RealExecutor;
109
110const MESSAGE_COUNT_PER_PAGE: usize = 100;
111const MAX_MESSAGE_LEN: usize = 1024;
112
113pub(crate) struct StoreGuard<'a> {
114 guard: MutexGuard<'a, Store>,
115 _not_send: PhantomData<Rc<()>>,
116}
117
118#[derive(Serialize)]
119pub struct ServerSnapshot<'a> {
120 peer: &'a Peer,
121 #[serde(serialize_with = "serialize_deref")]
122 store: StoreGuard<'a>,
123}
124
125pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
126where
127 S: Serializer,
128 T: Deref<Target = U>,
129 U: Serialize,
130{
131 Serialize::serialize(value.deref(), serializer)
132}
133
134impl Server {
135 pub fn new(
136 app_state: Arc<AppState>,
137 notifications: Option<mpsc::UnboundedSender<()>>,
138 ) -> Arc<Self> {
139 let mut server = Self {
140 peer: Peer::new(),
141 app_state,
142 store: Default::default(),
143 handlers: Default::default(),
144 notifications,
145 };
146
147 server
148 .add_request_handler(Server::ping)
149 .add_request_handler(Server::create_room)
150 .add_request_handler(Server::join_room)
151 .add_message_handler(Server::leave_room)
152 .add_request_handler(Server::call)
153 .add_request_handler(Server::cancel_call)
154 .add_message_handler(Server::decline_call)
155 .add_request_handler(Server::update_participant_location)
156 .add_request_handler(Server::share_project)
157 .add_message_handler(Server::unshare_project)
158 .add_request_handler(Server::join_project)
159 .add_message_handler(Server::leave_project)
160 .add_message_handler(Server::update_project)
161 .add_message_handler(Server::register_project_activity)
162 .add_request_handler(Server::update_worktree)
163 .add_message_handler(Server::update_worktree_extensions)
164 .add_message_handler(Server::start_language_server)
165 .add_message_handler(Server::update_language_server)
166 .add_message_handler(Server::update_diagnostic_summary)
167 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
168 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
170 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
171 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
172 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
173 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
176 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
177 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
178 .add_request_handler(
179 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
180 )
181 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
182 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
183 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
184 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
185 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
187 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
190 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
191 .add_message_handler(Server::create_buffer_for_peer)
192 .add_request_handler(Server::update_buffer)
193 .add_message_handler(Server::update_buffer_file)
194 .add_message_handler(Server::buffer_reloaded)
195 .add_message_handler(Server::buffer_saved)
196 .add_request_handler(Server::save_buffer)
197 .add_request_handler(Server::get_channels)
198 .add_request_handler(Server::get_users)
199 .add_request_handler(Server::fuzzy_search_users)
200 .add_request_handler(Server::request_contact)
201 .add_request_handler(Server::remove_contact)
202 .add_request_handler(Server::respond_to_contact_request)
203 .add_request_handler(Server::join_channel)
204 .add_message_handler(Server::leave_channel)
205 .add_request_handler(Server::send_channel_message)
206 .add_request_handler(Server::follow)
207 .add_message_handler(Server::unfollow)
208 .add_message_handler(Server::update_followers)
209 .add_request_handler(Server::get_channel_messages);
210
211 Arc::new(server)
212 }
213
214 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
215 where
216 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
217 Fut: 'static + Send + Future<Output = Result<()>>,
218 M: EnvelopedMessage,
219 {
220 let prev_handler = self.handlers.insert(
221 TypeId::of::<M>(),
222 Box::new(move |server, envelope| {
223 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
224 let span = info_span!(
225 "handle message",
226 payload_type = envelope.payload_type_name()
227 );
228 span.in_scope(|| {
229 tracing::info!(
230 payload_type = envelope.payload_type_name(),
231 "message received"
232 );
233 });
234 let future = (handler)(server, *envelope);
235 async move {
236 if let Err(error) = future.await {
237 tracing::error!(%error, "error handling message");
238 }
239 }
240 .instrument(span)
241 .boxed()
242 }),
243 );
244 if prev_handler.is_some() {
245 panic!("registered a handler for the same message twice");
246 }
247 self
248 }
249
250 /// Handle a request while holding a lock to the store. This is useful when we're registering
251 /// a connection but we want to respond on the connection before anybody else can send on it.
252 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
253 where
254 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
255 Fut: Send + Future<Output = Result<()>>,
256 M: RequestMessage,
257 {
258 let handler = Arc::new(handler);
259 self.add_message_handler(move |server, envelope| {
260 let receipt = envelope.receipt();
261 let handler = handler.clone();
262 async move {
263 let responded = Arc::new(AtomicBool::default());
264 let response = Response {
265 server: server.clone(),
266 responded: responded.clone(),
267 receipt: envelope.receipt(),
268 };
269 match (handler)(server.clone(), envelope, response).await {
270 Ok(()) => {
271 if responded.load(std::sync::atomic::Ordering::SeqCst) {
272 Ok(())
273 } else {
274 Err(anyhow!("handler did not send a response"))?
275 }
276 }
277 Err(error) => {
278 server.peer.respond_with_error(
279 receipt,
280 proto::Error {
281 message: error.to_string(),
282 },
283 )?;
284 Err(error)
285 }
286 }
287 }
288 })
289 }
290
291 /// Start a long lived task that records which users are active in which projects.
292 pub fn start_recording_project_activity<E: 'static + Executor>(
293 self: &Arc<Self>,
294 interval: Duration,
295 executor: E,
296 ) {
297 executor.spawn_detached({
298 let this = Arc::downgrade(self);
299 let executor = executor.clone();
300 async move {
301 let mut period_start = OffsetDateTime::now_utc();
302 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
303 loop {
304 let sleep = executor.sleep(interval);
305 sleep.await;
306 let this = if let Some(this) = this.upgrade() {
307 this
308 } else {
309 break;
310 };
311
312 active_projects.clear();
313 active_projects.extend(this.store().await.projects().flat_map(
314 |(project_id, project)| {
315 project.guests.values().chain([&project.host]).filter_map(
316 |collaborator| {
317 if !collaborator.admin
318 && collaborator
319 .last_activity
320 .map_or(false, |activity| activity > period_start)
321 {
322 Some((collaborator.user_id, *project_id))
323 } else {
324 None
325 }
326 },
327 )
328 },
329 ));
330
331 let period_end = OffsetDateTime::now_utc();
332 this.app_state
333 .db
334 .record_user_activity(period_start..period_end, &active_projects)
335 .await
336 .trace_err();
337 period_start = period_end;
338 }
339 }
340 });
341 }
342
343 pub fn handle_connection<E: Executor>(
344 self: &Arc<Self>,
345 connection: Connection,
346 address: String,
347 user: User,
348 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
349 executor: E,
350 ) -> impl Future<Output = Result<()>> {
351 let mut this = self.clone();
352 let user_id = user.id;
353 let login = user.github_login;
354 let span = info_span!("handle connection", %user_id, %login, %address);
355 async move {
356 let (connection_id, handle_io, mut incoming_rx) = this
357 .peer
358 .add_connection(connection, {
359 let executor = executor.clone();
360 move |duration| {
361 let timer = executor.sleep(duration);
362 async move {
363 timer.await;
364 }
365 }
366 })
367 .await;
368
369 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
370
371 if let Some(send_connection_id) = send_connection_id.as_mut() {
372 let _ = send_connection_id.send(connection_id).await;
373 }
374
375 if !user.connected_once {
376 this.peer.send(connection_id, proto::ShowContacts {})?;
377 this.app_state.db.set_user_connected_once(user_id, true).await?;
378 }
379
380 let (contacts, invite_code) = future::try_join(
381 this.app_state.db.get_contacts(user_id),
382 this.app_state.db.get_invite_code_for_user(user_id)
383 ).await?;
384
385 {
386 let mut store = this.store().await;
387 let incoming_call = store.add_connection(connection_id, user_id, user.admin);
388 if let Some(incoming_call) = incoming_call {
389 this.peer.send(connection_id, incoming_call)?;
390 }
391
392 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
393
394 if let Some((code, count)) = invite_code {
395 this.peer.send(connection_id, proto::UpdateInviteInfo {
396 url: format!("{}{}", this.app_state.invite_link_prefix, code),
397 count,
398 })?;
399 }
400 }
401 this.update_user_contacts(user_id).await?;
402
403 let handle_io = handle_io.fuse();
404 futures::pin_mut!(handle_io);
405
406 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
407 // This prevents deadlocks when e.g., client A performs a request to client B and
408 // client B performs a request to client A. If both clients stop processing further
409 // messages until their respective request completes, they won't have a chance to
410 // respond to the other client's request and cause a deadlock.
411 //
412 // This arrangement ensures we will attempt to process earlier messages first, but fall
413 // back to processing messages arrived later in the spirit of making progress.
414 let mut foreground_message_handlers = FuturesUnordered::new();
415 loop {
416 let next_message = incoming_rx.next().fuse();
417 futures::pin_mut!(next_message);
418 futures::select_biased! {
419 result = handle_io => {
420 if let Err(error) = result {
421 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
422 }
423 break;
424 }
425 _ = foreground_message_handlers.next() => {}
426 message = next_message => {
427 if let Some(message) = message {
428 let type_name = message.payload_type_name();
429 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
430 let span_enter = span.enter();
431 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
432 let notifications = this.notifications.clone();
433 let is_background = message.is_background();
434 let handle_message = (handler)(this.clone(), message);
435
436 drop(span_enter);
437 let handle_message = async move {
438 handle_message.await;
439 if let Some(mut notifications) = notifications {
440 let _ = notifications.send(()).await;
441 }
442 }.instrument(span);
443
444 if is_background {
445 executor.spawn_detached(handle_message);
446 } else {
447 foreground_message_handlers.push(handle_message);
448 }
449 } else {
450 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
451 }
452 } else {
453 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
454 break;
455 }
456 }
457 }
458 }
459
460 drop(foreground_message_handlers);
461 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
462 if let Err(error) = this.sign_out(connection_id).await {
463 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
464 }
465
466 Ok(())
467 }.instrument(span)
468 }
469
470 #[instrument(skip(self), err)]
471 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
472 self.peer.disconnect(connection_id);
473
474 let mut projects_to_unshare = Vec::new();
475 let removed_user_id;
476 {
477 let mut store = self.store().await;
478 let removed_connection = store.remove_connection(connection_id)?;
479
480 for (project_id, project) in removed_connection.hosted_projects {
481 projects_to_unshare.push(project_id);
482 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
483 self.peer.send(
484 conn_id,
485 proto::UnshareProject {
486 project_id: project_id.to_proto(),
487 },
488 )
489 });
490 }
491
492 for project_id in removed_connection.guest_project_ids {
493 if let Some(project) = store.project(project_id).trace_err() {
494 broadcast(connection_id, project.connection_ids(), |conn_id| {
495 self.peer.send(
496 conn_id,
497 proto::RemoveProjectCollaborator {
498 project_id: project_id.to_proto(),
499 peer_id: connection_id.0,
500 },
501 )
502 });
503 }
504 }
505
506 if let Some(room) = removed_connection
507 .room_id
508 .and_then(|room_id| store.room(room_id))
509 {
510 self.room_updated(room);
511 }
512
513 removed_user_id = removed_connection.user_id;
514 };
515
516 self.update_user_contacts(removed_user_id).await.trace_err();
517
518 for project_id in projects_to_unshare {
519 self.app_state
520 .db
521 .unregister_project(project_id)
522 .await
523 .trace_err();
524 }
525
526 Ok(())
527 }
528
529 pub async fn invite_code_redeemed(
530 self: &Arc<Self>,
531 code: &str,
532 invitee_id: UserId,
533 ) -> Result<()> {
534 let user = self.app_state.db.get_user_for_invite_code(code).await?;
535 let store = self.store().await;
536 let invitee_contact = store.contact_for_user(invitee_id, true);
537 for connection_id in store.connection_ids_for_user(user.id) {
538 self.peer.send(
539 connection_id,
540 proto::UpdateContacts {
541 contacts: vec![invitee_contact.clone()],
542 ..Default::default()
543 },
544 )?;
545 self.peer.send(
546 connection_id,
547 proto::UpdateInviteInfo {
548 url: format!("{}{}", self.app_state.invite_link_prefix, code),
549 count: user.invite_count as u32,
550 },
551 )?;
552 }
553 Ok(())
554 }
555
556 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
557 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
558 if let Some(invite_code) = &user.invite_code {
559 let store = self.store().await;
560 for connection_id in store.connection_ids_for_user(user_id) {
561 self.peer.send(
562 connection_id,
563 proto::UpdateInviteInfo {
564 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
565 count: user.invite_count as u32,
566 },
567 )?;
568 }
569 }
570 }
571 Ok(())
572 }
573
574 async fn ping(
575 self: Arc<Server>,
576 _: TypedEnvelope<proto::Ping>,
577 response: Response<proto::Ping>,
578 ) -> Result<()> {
579 response.send(proto::Ack {})?;
580 Ok(())
581 }
582
583 async fn create_room(
584 self: Arc<Server>,
585 request: TypedEnvelope<proto::CreateRoom>,
586 response: Response<proto::CreateRoom>,
587 ) -> Result<()> {
588 let room_id = self.store().await.create_room(request.sender_id)?;
589 response.send(proto::CreateRoomResponse { id: room_id })?;
590 Ok(())
591 }
592
593 async fn join_room(
594 self: Arc<Server>,
595 request: TypedEnvelope<proto::JoinRoom>,
596 response: Response<proto::JoinRoom>,
597 ) -> Result<()> {
598 let room_id = request.payload.id;
599 let mut store = self.store().await;
600 let (room, recipient_connection_ids) = store.join_room(room_id, request.sender_id)?;
601 for recipient_id in recipient_connection_ids {
602 self.peer
603 .send(recipient_id, proto::CallCanceled {})
604 .trace_err();
605 }
606 response.send(proto::JoinRoomResponse {
607 room: Some(room.clone()),
608 })?;
609 self.room_updated(room);
610 Ok(())
611 }
612
613 async fn leave_room(self: Arc<Server>, message: TypedEnvelope<proto::LeaveRoom>) -> Result<()> {
614 let room_id = message.payload.id;
615 let mut store = self.store().await;
616 let left_room = store.leave_room(room_id, message.sender_id)?;
617
618 for project in left_room.unshared_projects {
619 for connection_id in project.connection_ids() {
620 self.peer.send(
621 connection_id,
622 proto::UnshareProject {
623 project_id: project.id.to_proto(),
624 },
625 )?;
626 }
627 }
628
629 for project in left_room.left_projects {
630 if project.remove_collaborator {
631 for connection_id in project.connection_ids {
632 self.peer.send(
633 connection_id,
634 proto::RemoveProjectCollaborator {
635 project_id: project.id.to_proto(),
636 peer_id: message.sender_id.0,
637 },
638 )?;
639 }
640
641 self.peer.send(
642 message.sender_id,
643 proto::UnshareProject {
644 project_id: project.id.to_proto(),
645 },
646 )?;
647 }
648 }
649
650 if let Some(room) = left_room.room {
651 self.room_updated(room);
652 }
653 Ok(())
654 }
655
656 async fn call(
657 self: Arc<Server>,
658 request: TypedEnvelope<proto::Call>,
659 response: Response<proto::Call>,
660 ) -> Result<()> {
661 let caller_user_id = self
662 .store()
663 .await
664 .user_id_for_connection(request.sender_id)?;
665 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
666 let initial_project_id = request
667 .payload
668 .initial_project_id
669 .map(ProjectId::from_proto);
670 if !self
671 .app_state
672 .db
673 .has_contact(caller_user_id, recipient_user_id)
674 .await?
675 {
676 return Err(anyhow!("cannot call a user who isn't a contact"))?;
677 }
678
679 let room_id = request.payload.room_id;
680 let mut calls = {
681 let mut store = self.store().await;
682 let (room, recipient_connection_ids, incoming_call) = store.call(
683 room_id,
684 recipient_user_id,
685 initial_project_id,
686 request.sender_id,
687 )?;
688 self.room_updated(room);
689 recipient_connection_ids
690 .into_iter()
691 .map(|recipient_connection_id| {
692 self.peer
693 .request(recipient_connection_id, incoming_call.clone())
694 })
695 .collect::<FuturesUnordered<_>>()
696 };
697
698 while let Some(call_response) = calls.next().await {
699 match call_response.as_ref() {
700 Ok(_) => {
701 response.send(proto::Ack {})?;
702 return Ok(());
703 }
704 Err(_) => {
705 call_response.trace_err();
706 }
707 }
708 }
709
710 {
711 let mut store = self.store().await;
712 let room = store.call_failed(room_id, recipient_user_id)?;
713 self.room_updated(&room);
714 }
715
716 Err(anyhow!("failed to ring call recipient"))?
717 }
718
719 async fn cancel_call(
720 self: Arc<Server>,
721 request: TypedEnvelope<proto::CancelCall>,
722 response: Response<proto::CancelCall>,
723 ) -> Result<()> {
724 let mut store = self.store().await;
725 let (room, recipient_connection_ids) = store.cancel_call(
726 UserId::from_proto(request.payload.recipient_user_id),
727 request.sender_id,
728 )?;
729 for recipient_id in recipient_connection_ids {
730 self.peer
731 .send(recipient_id, proto::CallCanceled {})
732 .trace_err();
733 }
734 self.room_updated(room);
735 response.send(proto::Ack {})?;
736 Ok(())
737 }
738
739 async fn decline_call(
740 self: Arc<Server>,
741 message: TypedEnvelope<proto::DeclineCall>,
742 ) -> Result<()> {
743 let mut store = self.store().await;
744 let (room, recipient_connection_ids) = store.call_declined(message.sender_id)?;
745 for recipient_id in recipient_connection_ids {
746 self.peer
747 .send(recipient_id, proto::CallCanceled {})
748 .trace_err();
749 }
750 self.room_updated(room);
751 Ok(())
752 }
753
754 async fn update_participant_location(
755 self: Arc<Server>,
756 request: TypedEnvelope<proto::UpdateParticipantLocation>,
757 response: Response<proto::UpdateParticipantLocation>,
758 ) -> Result<()> {
759 let room_id = request.payload.room_id;
760 let location = request
761 .payload
762 .location
763 .ok_or_else(|| anyhow!("invalid location"))?;
764 let mut store = self.store().await;
765 let room = store.update_participant_location(room_id, location, request.sender_id)?;
766 self.room_updated(room);
767 response.send(proto::Ack {})?;
768 Ok(())
769 }
770
771 fn room_updated(&self, room: &proto::Room) {
772 for participant in &room.participants {
773 self.peer
774 .send(
775 ConnectionId(participant.peer_id),
776 proto::RoomUpdated {
777 room: Some(room.clone()),
778 },
779 )
780 .trace_err();
781 }
782 }
783
784 async fn share_project(
785 self: Arc<Server>,
786 request: TypedEnvelope<proto::ShareProject>,
787 response: Response<proto::ShareProject>,
788 ) -> Result<()> {
789 let user_id = self
790 .store()
791 .await
792 .user_id_for_connection(request.sender_id)?;
793 let project_id = self.app_state.db.register_project(user_id).await?;
794 let mut store = self.store().await;
795 let room = store.share_project(request.payload.room_id, project_id, request.sender_id)?;
796 response.send(proto::ShareProjectResponse {
797 project_id: project_id.to_proto(),
798 })?;
799 self.room_updated(room);
800
801 Ok(())
802 }
803
804 async fn unshare_project(
805 self: Arc<Server>,
806 message: TypedEnvelope<proto::UnshareProject>,
807 ) -> Result<()> {
808 let project_id = ProjectId::from_proto(message.payload.project_id);
809 let mut store = self.store().await;
810 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
811 broadcast(
812 message.sender_id,
813 project.guest_connection_ids(),
814 |conn_id| self.peer.send(conn_id, message.payload.clone()),
815 );
816 self.room_updated(room);
817
818 Ok(())
819 }
820
821 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
822 let contacts = self.app_state.db.get_contacts(user_id).await?;
823 let store = self.store().await;
824 let updated_contact = store.contact_for_user(user_id, false);
825 for contact in contacts {
826 if let db::Contact::Accepted {
827 user_id: contact_user_id,
828 ..
829 } = contact
830 {
831 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
832 self.peer
833 .send(
834 contact_conn_id,
835 proto::UpdateContacts {
836 contacts: vec![updated_contact.clone()],
837 remove_contacts: Default::default(),
838 incoming_requests: Default::default(),
839 remove_incoming_requests: Default::default(),
840 outgoing_requests: Default::default(),
841 remove_outgoing_requests: Default::default(),
842 },
843 )
844 .trace_err();
845 }
846 }
847 }
848 Ok(())
849 }
850
851 async fn join_project(
852 self: Arc<Server>,
853 request: TypedEnvelope<proto::JoinProject>,
854 response: Response<proto::JoinProject>,
855 ) -> Result<()> {
856 let project_id = ProjectId::from_proto(request.payload.project_id);
857
858 let host_user_id;
859 let guest_user_id;
860 let host_connection_id;
861 {
862 let state = self.store().await;
863 let project = state.project(project_id)?;
864 host_user_id = project.host.user_id;
865 host_connection_id = project.host_connection_id;
866 guest_user_id = state.user_id_for_connection(request.sender_id)?;
867 };
868
869 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
870
871 let mut store = self.store().await;
872 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
873 let peer_count = project.guests.len();
874 let mut collaborators = Vec::with_capacity(peer_count);
875 collaborators.push(proto::Collaborator {
876 peer_id: project.host_connection_id.0,
877 replica_id: 0,
878 user_id: project.host.user_id.to_proto(),
879 });
880 let worktrees = project
881 .worktrees
882 .iter()
883 .map(|(id, worktree)| proto::WorktreeMetadata {
884 id: *id,
885 root_name: worktree.root_name.clone(),
886 visible: worktree.visible,
887 })
888 .collect::<Vec<_>>();
889
890 // Add all guests other than the requesting user's own connections as collaborators
891 for (guest_conn_id, guest) in &project.guests {
892 if request.sender_id != *guest_conn_id {
893 collaborators.push(proto::Collaborator {
894 peer_id: guest_conn_id.0,
895 replica_id: guest.replica_id as u32,
896 user_id: guest.user_id.to_proto(),
897 });
898 }
899 }
900
901 for conn_id in project.connection_ids() {
902 if conn_id != request.sender_id {
903 self.peer.send(
904 conn_id,
905 proto::AddProjectCollaborator {
906 project_id: project_id.to_proto(),
907 collaborator: Some(proto::Collaborator {
908 peer_id: request.sender_id.0,
909 replica_id: replica_id as u32,
910 user_id: guest_user_id.to_proto(),
911 }),
912 },
913 )?;
914 }
915 }
916
917 // First, we send the metadata associated with each worktree.
918 response.send(proto::JoinProjectResponse {
919 worktrees: worktrees.clone(),
920 replica_id: replica_id as u32,
921 collaborators: collaborators.clone(),
922 language_servers: project.language_servers.clone(),
923 })?;
924
925 for (worktree_id, worktree) in &project.worktrees {
926 #[cfg(any(test, feature = "test-support"))]
927 const MAX_CHUNK_SIZE: usize = 2;
928 #[cfg(not(any(test, feature = "test-support")))]
929 const MAX_CHUNK_SIZE: usize = 256;
930
931 // Stream this worktree's entries.
932 let message = proto::UpdateWorktree {
933 project_id: project_id.to_proto(),
934 worktree_id: *worktree_id,
935 root_name: worktree.root_name.clone(),
936 updated_entries: worktree.entries.values().cloned().collect(),
937 removed_entries: Default::default(),
938 scan_id: worktree.scan_id,
939 is_last_update: worktree.is_complete,
940 };
941 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
942 self.peer.send(request.sender_id, update.clone())?;
943 }
944
945 // Stream this worktree's diagnostics.
946 for summary in worktree.diagnostic_summaries.values() {
947 self.peer.send(
948 request.sender_id,
949 proto::UpdateDiagnosticSummary {
950 project_id: project_id.to_proto(),
951 worktree_id: *worktree_id,
952 summary: Some(summary.clone()),
953 },
954 )?;
955 }
956 }
957
958 Ok(())
959 }
960
961 async fn leave_project(
962 self: Arc<Server>,
963 request: TypedEnvelope<proto::LeaveProject>,
964 ) -> Result<()> {
965 let sender_id = request.sender_id;
966 let project_id = ProjectId::from_proto(request.payload.project_id);
967 let project;
968 {
969 let mut store = self.store().await;
970 project = store.leave_project(project_id, sender_id)?;
971 tracing::info!(
972 %project_id,
973 host_user_id = %project.host_user_id,
974 host_connection_id = %project.host_connection_id,
975 "leave project"
976 );
977
978 if project.remove_collaborator {
979 broadcast(sender_id, project.connection_ids, |conn_id| {
980 self.peer.send(
981 conn_id,
982 proto::RemoveProjectCollaborator {
983 project_id: project_id.to_proto(),
984 peer_id: sender_id.0,
985 },
986 )
987 });
988 }
989 }
990
991 Ok(())
992 }
993
994 async fn update_project(
995 self: Arc<Server>,
996 request: TypedEnvelope<proto::UpdateProject>,
997 ) -> Result<()> {
998 let project_id = ProjectId::from_proto(request.payload.project_id);
999 {
1000 let mut state = self.store().await;
1001 let guest_connection_ids = state
1002 .read_project(project_id, request.sender_id)?
1003 .guest_connection_ids();
1004 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
1005 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1006 self.peer
1007 .forward_send(request.sender_id, connection_id, request.payload.clone())
1008 });
1009 };
1010
1011 Ok(())
1012 }
1013
1014 async fn register_project_activity(
1015 self: Arc<Server>,
1016 request: TypedEnvelope<proto::RegisterProjectActivity>,
1017 ) -> Result<()> {
1018 self.store().await.register_project_activity(
1019 ProjectId::from_proto(request.payload.project_id),
1020 request.sender_id,
1021 )?;
1022 Ok(())
1023 }
1024
1025 async fn update_worktree(
1026 self: Arc<Server>,
1027 request: TypedEnvelope<proto::UpdateWorktree>,
1028 response: Response<proto::UpdateWorktree>,
1029 ) -> Result<()> {
1030 let project_id = ProjectId::from_proto(request.payload.project_id);
1031 let worktree_id = request.payload.worktree_id;
1032 let connection_ids = self.store().await.update_worktree(
1033 request.sender_id,
1034 project_id,
1035 worktree_id,
1036 &request.payload.root_name,
1037 &request.payload.removed_entries,
1038 &request.payload.updated_entries,
1039 request.payload.scan_id,
1040 request.payload.is_last_update,
1041 )?;
1042
1043 broadcast(request.sender_id, connection_ids, |connection_id| {
1044 self.peer
1045 .forward_send(request.sender_id, connection_id, request.payload.clone())
1046 });
1047 response.send(proto::Ack {})?;
1048 Ok(())
1049 }
1050
1051 async fn update_worktree_extensions(
1052 self: Arc<Server>,
1053 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1054 ) -> Result<()> {
1055 let project_id = ProjectId::from_proto(request.payload.project_id);
1056 let worktree_id = request.payload.worktree_id;
1057 let extensions = request
1058 .payload
1059 .extensions
1060 .into_iter()
1061 .zip(request.payload.counts)
1062 .collect();
1063 self.app_state
1064 .db
1065 .update_worktree_extensions(project_id, worktree_id, extensions)
1066 .await?;
1067 Ok(())
1068 }
1069
1070 async fn update_diagnostic_summary(
1071 self: Arc<Server>,
1072 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1073 ) -> Result<()> {
1074 let summary = request
1075 .payload
1076 .summary
1077 .clone()
1078 .ok_or_else(|| anyhow!("invalid summary"))?;
1079 let receiver_ids = self.store().await.update_diagnostic_summary(
1080 ProjectId::from_proto(request.payload.project_id),
1081 request.payload.worktree_id,
1082 request.sender_id,
1083 summary,
1084 )?;
1085
1086 broadcast(request.sender_id, receiver_ids, |connection_id| {
1087 self.peer
1088 .forward_send(request.sender_id, connection_id, request.payload.clone())
1089 });
1090 Ok(())
1091 }
1092
1093 async fn start_language_server(
1094 self: Arc<Server>,
1095 request: TypedEnvelope<proto::StartLanguageServer>,
1096 ) -> Result<()> {
1097 let receiver_ids = self.store().await.start_language_server(
1098 ProjectId::from_proto(request.payload.project_id),
1099 request.sender_id,
1100 request
1101 .payload
1102 .server
1103 .clone()
1104 .ok_or_else(|| anyhow!("invalid language server"))?,
1105 )?;
1106 broadcast(request.sender_id, receiver_ids, |connection_id| {
1107 self.peer
1108 .forward_send(request.sender_id, connection_id, request.payload.clone())
1109 });
1110 Ok(())
1111 }
1112
1113 async fn update_language_server(
1114 self: Arc<Server>,
1115 request: TypedEnvelope<proto::UpdateLanguageServer>,
1116 ) -> Result<()> {
1117 let receiver_ids = self.store().await.project_connection_ids(
1118 ProjectId::from_proto(request.payload.project_id),
1119 request.sender_id,
1120 )?;
1121 broadcast(request.sender_id, receiver_ids, |connection_id| {
1122 self.peer
1123 .forward_send(request.sender_id, connection_id, request.payload.clone())
1124 });
1125 Ok(())
1126 }
1127
1128 async fn forward_project_request<T>(
1129 self: Arc<Server>,
1130 request: TypedEnvelope<T>,
1131 response: Response<T>,
1132 ) -> Result<()>
1133 where
1134 T: EntityMessage + RequestMessage,
1135 {
1136 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1137 let host_connection_id = self
1138 .store()
1139 .await
1140 .read_project(project_id, request.sender_id)?
1141 .host_connection_id;
1142 let payload = self
1143 .peer
1144 .forward_request(request.sender_id, host_connection_id, request.payload)
1145 .await?;
1146
1147 // Ensure project still exists by the time we get the response from the host.
1148 self.store()
1149 .await
1150 .read_project(project_id, request.sender_id)?;
1151
1152 response.send(payload)?;
1153 Ok(())
1154 }
1155
1156 async fn save_buffer(
1157 self: Arc<Server>,
1158 request: TypedEnvelope<proto::SaveBuffer>,
1159 response: Response<proto::SaveBuffer>,
1160 ) -> Result<()> {
1161 let project_id = ProjectId::from_proto(request.payload.project_id);
1162 let host = self
1163 .store()
1164 .await
1165 .read_project(project_id, request.sender_id)?
1166 .host_connection_id;
1167 let response_payload = self
1168 .peer
1169 .forward_request(request.sender_id, host, request.payload.clone())
1170 .await?;
1171
1172 let mut guests = self
1173 .store()
1174 .await
1175 .read_project(project_id, request.sender_id)?
1176 .connection_ids();
1177 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1178 broadcast(host, guests, |conn_id| {
1179 self.peer
1180 .forward_send(host, conn_id, response_payload.clone())
1181 });
1182 response.send(response_payload)?;
1183 Ok(())
1184 }
1185
1186 async fn create_buffer_for_peer(
1187 self: Arc<Server>,
1188 request: TypedEnvelope<proto::CreateBufferForPeer>,
1189 ) -> Result<()> {
1190 self.peer.forward_send(
1191 request.sender_id,
1192 ConnectionId(request.payload.peer_id),
1193 request.payload,
1194 )?;
1195 Ok(())
1196 }
1197
1198 async fn update_buffer(
1199 self: Arc<Server>,
1200 request: TypedEnvelope<proto::UpdateBuffer>,
1201 response: Response<proto::UpdateBuffer>,
1202 ) -> Result<()> {
1203 let project_id = ProjectId::from_proto(request.payload.project_id);
1204 let receiver_ids = {
1205 let mut store = self.store().await;
1206 store.register_project_activity(project_id, request.sender_id)?;
1207 store.project_connection_ids(project_id, request.sender_id)?
1208 };
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 response.send(proto::Ack {})?;
1215 Ok(())
1216 }
1217
1218 async fn update_buffer_file(
1219 self: Arc<Server>,
1220 request: TypedEnvelope<proto::UpdateBufferFile>,
1221 ) -> Result<()> {
1222 let receiver_ids = self.store().await.project_connection_ids(
1223 ProjectId::from_proto(request.payload.project_id),
1224 request.sender_id,
1225 )?;
1226 broadcast(request.sender_id, receiver_ids, |connection_id| {
1227 self.peer
1228 .forward_send(request.sender_id, connection_id, request.payload.clone())
1229 });
1230 Ok(())
1231 }
1232
1233 async fn buffer_reloaded(
1234 self: Arc<Server>,
1235 request: TypedEnvelope<proto::BufferReloaded>,
1236 ) -> Result<()> {
1237 let receiver_ids = self.store().await.project_connection_ids(
1238 ProjectId::from_proto(request.payload.project_id),
1239 request.sender_id,
1240 )?;
1241 broadcast(request.sender_id, receiver_ids, |connection_id| {
1242 self.peer
1243 .forward_send(request.sender_id, connection_id, request.payload.clone())
1244 });
1245 Ok(())
1246 }
1247
1248 async fn buffer_saved(
1249 self: Arc<Server>,
1250 request: TypedEnvelope<proto::BufferSaved>,
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 follow(
1264 self: Arc<Self>,
1265 request: TypedEnvelope<proto::Follow>,
1266 response: Response<proto::Follow>,
1267 ) -> Result<()> {
1268 let project_id = ProjectId::from_proto(request.payload.project_id);
1269 let leader_id = ConnectionId(request.payload.leader_id);
1270 let follower_id = request.sender_id;
1271 {
1272 let mut store = self.store().await;
1273 if !store
1274 .project_connection_ids(project_id, follower_id)?
1275 .contains(&leader_id)
1276 {
1277 Err(anyhow!("no such peer"))?;
1278 }
1279
1280 store.register_project_activity(project_id, follower_id)?;
1281 }
1282
1283 let mut response_payload = self
1284 .peer
1285 .forward_request(request.sender_id, leader_id, request.payload)
1286 .await?;
1287 response_payload
1288 .views
1289 .retain(|view| view.leader_id != Some(follower_id.0));
1290 response.send(response_payload)?;
1291 Ok(())
1292 }
1293
1294 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1295 let project_id = ProjectId::from_proto(request.payload.project_id);
1296 let leader_id = ConnectionId(request.payload.leader_id);
1297 let mut store = self.store().await;
1298 if !store
1299 .project_connection_ids(project_id, request.sender_id)?
1300 .contains(&leader_id)
1301 {
1302 Err(anyhow!("no such peer"))?;
1303 }
1304 store.register_project_activity(project_id, request.sender_id)?;
1305 self.peer
1306 .forward_send(request.sender_id, leader_id, request.payload)?;
1307 Ok(())
1308 }
1309
1310 async fn update_followers(
1311 self: Arc<Self>,
1312 request: TypedEnvelope<proto::UpdateFollowers>,
1313 ) -> Result<()> {
1314 let project_id = ProjectId::from_proto(request.payload.project_id);
1315 let mut store = self.store().await;
1316 store.register_project_activity(project_id, request.sender_id)?;
1317 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1318 let leader_id = request
1319 .payload
1320 .variant
1321 .as_ref()
1322 .and_then(|variant| match variant {
1323 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1324 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1325 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1326 });
1327 for follower_id in &request.payload.follower_ids {
1328 let follower_id = ConnectionId(*follower_id);
1329 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1330 self.peer
1331 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1332 }
1333 }
1334 Ok(())
1335 }
1336
1337 async fn get_channels(
1338 self: Arc<Server>,
1339 request: TypedEnvelope<proto::GetChannels>,
1340 response: Response<proto::GetChannels>,
1341 ) -> Result<()> {
1342 let user_id = self
1343 .store()
1344 .await
1345 .user_id_for_connection(request.sender_id)?;
1346 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1347 response.send(proto::GetChannelsResponse {
1348 channels: channels
1349 .into_iter()
1350 .map(|chan| proto::Channel {
1351 id: chan.id.to_proto(),
1352 name: chan.name,
1353 })
1354 .collect(),
1355 })?;
1356 Ok(())
1357 }
1358
1359 async fn get_users(
1360 self: Arc<Server>,
1361 request: TypedEnvelope<proto::GetUsers>,
1362 response: Response<proto::GetUsers>,
1363 ) -> Result<()> {
1364 let user_ids = request
1365 .payload
1366 .user_ids
1367 .into_iter()
1368 .map(UserId::from_proto)
1369 .collect();
1370 let users = self
1371 .app_state
1372 .db
1373 .get_users_by_ids(user_ids)
1374 .await?
1375 .into_iter()
1376 .map(|user| proto::User {
1377 id: user.id.to_proto(),
1378 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1379 github_login: user.github_login,
1380 })
1381 .collect();
1382 response.send(proto::UsersResponse { users })?;
1383 Ok(())
1384 }
1385
1386 async fn fuzzy_search_users(
1387 self: Arc<Server>,
1388 request: TypedEnvelope<proto::FuzzySearchUsers>,
1389 response: Response<proto::FuzzySearchUsers>,
1390 ) -> Result<()> {
1391 let user_id = self
1392 .store()
1393 .await
1394 .user_id_for_connection(request.sender_id)?;
1395 let query = request.payload.query;
1396 let db = &self.app_state.db;
1397 let users = match query.len() {
1398 0 => vec![],
1399 1 | 2 => db
1400 .get_user_by_github_login(&query)
1401 .await?
1402 .into_iter()
1403 .collect(),
1404 _ => db.fuzzy_search_users(&query, 10).await?,
1405 };
1406 let users = users
1407 .into_iter()
1408 .filter(|user| user.id != user_id)
1409 .map(|user| proto::User {
1410 id: user.id.to_proto(),
1411 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1412 github_login: user.github_login,
1413 })
1414 .collect();
1415 response.send(proto::UsersResponse { users })?;
1416 Ok(())
1417 }
1418
1419 async fn request_contact(
1420 self: Arc<Server>,
1421 request: TypedEnvelope<proto::RequestContact>,
1422 response: Response<proto::RequestContact>,
1423 ) -> Result<()> {
1424 let requester_id = self
1425 .store()
1426 .await
1427 .user_id_for_connection(request.sender_id)?;
1428 let responder_id = UserId::from_proto(request.payload.responder_id);
1429 if requester_id == responder_id {
1430 return Err(anyhow!("cannot add yourself as a contact"))?;
1431 }
1432
1433 self.app_state
1434 .db
1435 .send_contact_request(requester_id, responder_id)
1436 .await?;
1437
1438 // Update outgoing contact requests of requester
1439 let mut update = proto::UpdateContacts::default();
1440 update.outgoing_requests.push(responder_id.to_proto());
1441 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1442 self.peer.send(connection_id, update.clone())?;
1443 }
1444
1445 // Update incoming contact requests of responder
1446 let mut update = proto::UpdateContacts::default();
1447 update
1448 .incoming_requests
1449 .push(proto::IncomingContactRequest {
1450 requester_id: requester_id.to_proto(),
1451 should_notify: true,
1452 });
1453 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1454 self.peer.send(connection_id, update.clone())?;
1455 }
1456
1457 response.send(proto::Ack {})?;
1458 Ok(())
1459 }
1460
1461 async fn respond_to_contact_request(
1462 self: Arc<Server>,
1463 request: TypedEnvelope<proto::RespondToContactRequest>,
1464 response: Response<proto::RespondToContactRequest>,
1465 ) -> Result<()> {
1466 let responder_id = self
1467 .store()
1468 .await
1469 .user_id_for_connection(request.sender_id)?;
1470 let requester_id = UserId::from_proto(request.payload.requester_id);
1471 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1472 self.app_state
1473 .db
1474 .dismiss_contact_notification(responder_id, requester_id)
1475 .await?;
1476 } else {
1477 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1478 self.app_state
1479 .db
1480 .respond_to_contact_request(responder_id, requester_id, accept)
1481 .await?;
1482
1483 let store = self.store().await;
1484 // Update responder with new contact
1485 let mut update = proto::UpdateContacts::default();
1486 if accept {
1487 update
1488 .contacts
1489 .push(store.contact_for_user(requester_id, false));
1490 }
1491 update
1492 .remove_incoming_requests
1493 .push(requester_id.to_proto());
1494 for connection_id in store.connection_ids_for_user(responder_id) {
1495 self.peer.send(connection_id, update.clone())?;
1496 }
1497
1498 // Update requester with new contact
1499 let mut update = proto::UpdateContacts::default();
1500 if accept {
1501 update
1502 .contacts
1503 .push(store.contact_for_user(responder_id, true));
1504 }
1505 update
1506 .remove_outgoing_requests
1507 .push(responder_id.to_proto());
1508 for connection_id in store.connection_ids_for_user(requester_id) {
1509 self.peer.send(connection_id, update.clone())?;
1510 }
1511 }
1512
1513 response.send(proto::Ack {})?;
1514 Ok(())
1515 }
1516
1517 async fn remove_contact(
1518 self: Arc<Server>,
1519 request: TypedEnvelope<proto::RemoveContact>,
1520 response: Response<proto::RemoveContact>,
1521 ) -> Result<()> {
1522 let requester_id = self
1523 .store()
1524 .await
1525 .user_id_for_connection(request.sender_id)?;
1526 let responder_id = UserId::from_proto(request.payload.user_id);
1527 self.app_state
1528 .db
1529 .remove_contact(requester_id, responder_id)
1530 .await?;
1531
1532 // Update outgoing contact requests of requester
1533 let mut update = proto::UpdateContacts::default();
1534 update
1535 .remove_outgoing_requests
1536 .push(responder_id.to_proto());
1537 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1538 self.peer.send(connection_id, update.clone())?;
1539 }
1540
1541 // Update incoming contact requests of responder
1542 let mut update = proto::UpdateContacts::default();
1543 update
1544 .remove_incoming_requests
1545 .push(requester_id.to_proto());
1546 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1547 self.peer.send(connection_id, update.clone())?;
1548 }
1549
1550 response.send(proto::Ack {})?;
1551 Ok(())
1552 }
1553
1554 async fn join_channel(
1555 self: Arc<Self>,
1556 request: TypedEnvelope<proto::JoinChannel>,
1557 response: Response<proto::JoinChannel>,
1558 ) -> Result<()> {
1559 let user_id = self
1560 .store()
1561 .await
1562 .user_id_for_connection(request.sender_id)?;
1563 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1564 if !self
1565 .app_state
1566 .db
1567 .can_user_access_channel(user_id, channel_id)
1568 .await?
1569 {
1570 Err(anyhow!("access denied"))?;
1571 }
1572
1573 self.store()
1574 .await
1575 .join_channel(request.sender_id, channel_id);
1576 let messages = self
1577 .app_state
1578 .db
1579 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1580 .await?
1581 .into_iter()
1582 .map(|msg| proto::ChannelMessage {
1583 id: msg.id.to_proto(),
1584 body: msg.body,
1585 timestamp: msg.sent_at.unix_timestamp() as u64,
1586 sender_id: msg.sender_id.to_proto(),
1587 nonce: Some(msg.nonce.as_u128().into()),
1588 })
1589 .collect::<Vec<_>>();
1590 response.send(proto::JoinChannelResponse {
1591 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1592 messages,
1593 })?;
1594 Ok(())
1595 }
1596
1597 async fn leave_channel(
1598 self: Arc<Self>,
1599 request: TypedEnvelope<proto::LeaveChannel>,
1600 ) -> Result<()> {
1601 let user_id = self
1602 .store()
1603 .await
1604 .user_id_for_connection(request.sender_id)?;
1605 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1606 if !self
1607 .app_state
1608 .db
1609 .can_user_access_channel(user_id, channel_id)
1610 .await?
1611 {
1612 Err(anyhow!("access denied"))?;
1613 }
1614
1615 self.store()
1616 .await
1617 .leave_channel(request.sender_id, channel_id);
1618
1619 Ok(())
1620 }
1621
1622 async fn send_channel_message(
1623 self: Arc<Self>,
1624 request: TypedEnvelope<proto::SendChannelMessage>,
1625 response: Response<proto::SendChannelMessage>,
1626 ) -> Result<()> {
1627 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1628 let user_id;
1629 let connection_ids;
1630 {
1631 let state = self.store().await;
1632 user_id = state.user_id_for_connection(request.sender_id)?;
1633 connection_ids = state.channel_connection_ids(channel_id)?;
1634 }
1635
1636 // Validate the message body.
1637 let body = request.payload.body.trim().to_string();
1638 if body.len() > MAX_MESSAGE_LEN {
1639 return Err(anyhow!("message is too long"))?;
1640 }
1641 if body.is_empty() {
1642 return Err(anyhow!("message can't be blank"))?;
1643 }
1644
1645 let timestamp = OffsetDateTime::now_utc();
1646 let nonce = request
1647 .payload
1648 .nonce
1649 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1650
1651 let message_id = self
1652 .app_state
1653 .db
1654 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1655 .await?
1656 .to_proto();
1657 let message = proto::ChannelMessage {
1658 sender_id: user_id.to_proto(),
1659 id: message_id,
1660 body,
1661 timestamp: timestamp.unix_timestamp() as u64,
1662 nonce: Some(nonce),
1663 };
1664 broadcast(request.sender_id, connection_ids, |conn_id| {
1665 self.peer.send(
1666 conn_id,
1667 proto::ChannelMessageSent {
1668 channel_id: channel_id.to_proto(),
1669 message: Some(message.clone()),
1670 },
1671 )
1672 });
1673 response.send(proto::SendChannelMessageResponse {
1674 message: Some(message),
1675 })?;
1676 Ok(())
1677 }
1678
1679 async fn get_channel_messages(
1680 self: Arc<Self>,
1681 request: TypedEnvelope<proto::GetChannelMessages>,
1682 response: Response<proto::GetChannelMessages>,
1683 ) -> Result<()> {
1684 let user_id = self
1685 .store()
1686 .await
1687 .user_id_for_connection(request.sender_id)?;
1688 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1689 if !self
1690 .app_state
1691 .db
1692 .can_user_access_channel(user_id, channel_id)
1693 .await?
1694 {
1695 Err(anyhow!("access denied"))?;
1696 }
1697
1698 let messages = self
1699 .app_state
1700 .db
1701 .get_channel_messages(
1702 channel_id,
1703 MESSAGE_COUNT_PER_PAGE,
1704 Some(MessageId::from_proto(request.payload.before_message_id)),
1705 )
1706 .await?
1707 .into_iter()
1708 .map(|msg| proto::ChannelMessage {
1709 id: msg.id.to_proto(),
1710 body: msg.body,
1711 timestamp: msg.sent_at.unix_timestamp() as u64,
1712 sender_id: msg.sender_id.to_proto(),
1713 nonce: Some(msg.nonce.as_u128().into()),
1714 })
1715 .collect::<Vec<_>>();
1716 response.send(proto::GetChannelMessagesResponse {
1717 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1718 messages,
1719 })?;
1720 Ok(())
1721 }
1722
1723 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1724 #[cfg(test)]
1725 tokio::task::yield_now().await;
1726 let guard = self.store.lock().await;
1727 #[cfg(test)]
1728 tokio::task::yield_now().await;
1729 StoreGuard {
1730 guard,
1731 _not_send: PhantomData,
1732 }
1733 }
1734
1735 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1736 ServerSnapshot {
1737 store: self.store().await,
1738 peer: &self.peer,
1739 }
1740 }
1741}
1742
1743impl<'a> Deref for StoreGuard<'a> {
1744 type Target = Store;
1745
1746 fn deref(&self) -> &Self::Target {
1747 &*self.guard
1748 }
1749}
1750
1751impl<'a> DerefMut for StoreGuard<'a> {
1752 fn deref_mut(&mut self) -> &mut Self::Target {
1753 &mut *self.guard
1754 }
1755}
1756
1757impl<'a> Drop for StoreGuard<'a> {
1758 fn drop(&mut self) {
1759 #[cfg(test)]
1760 self.check_invariants();
1761 }
1762}
1763
1764impl Executor for RealExecutor {
1765 type Sleep = Sleep;
1766
1767 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1768 tokio::task::spawn(future);
1769 }
1770
1771 fn sleep(&self, duration: Duration) -> Self::Sleep {
1772 tokio::time::sleep(duration)
1773 }
1774}
1775
1776fn broadcast<F>(
1777 sender_id: ConnectionId,
1778 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1779 mut f: F,
1780) where
1781 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1782{
1783 for receiver_id in receiver_ids {
1784 if receiver_id != sender_id {
1785 f(receiver_id).trace_err();
1786 }
1787 }
1788}
1789
1790lazy_static! {
1791 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1792}
1793
1794pub struct ProtocolVersion(u32);
1795
1796impl Header for ProtocolVersion {
1797 fn name() -> &'static HeaderName {
1798 &ZED_PROTOCOL_VERSION
1799 }
1800
1801 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1802 where
1803 Self: Sized,
1804 I: Iterator<Item = &'i axum::http::HeaderValue>,
1805 {
1806 let version = values
1807 .next()
1808 .ok_or_else(axum::headers::Error::invalid)?
1809 .to_str()
1810 .map_err(|_| axum::headers::Error::invalid())?
1811 .parse()
1812 .map_err(|_| axum::headers::Error::invalid())?;
1813 Ok(Self(version))
1814 }
1815
1816 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1817 values.extend([self.0.to_string().parse().unwrap()]);
1818 }
1819}
1820
1821pub fn routes(server: Arc<Server>) -> Router<Body> {
1822 Router::new()
1823 .route("/rpc", get(handle_websocket_request))
1824 .layer(
1825 ServiceBuilder::new()
1826 .layer(Extension(server.app_state.clone()))
1827 .layer(middleware::from_fn(auth::validate_header)),
1828 )
1829 .route("/metrics", get(handle_metrics))
1830 .layer(Extension(server))
1831}
1832
1833pub async fn handle_websocket_request(
1834 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1835 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1836 Extension(server): Extension<Arc<Server>>,
1837 Extension(user): Extension<User>,
1838 ws: WebSocketUpgrade,
1839) -> axum::response::Response {
1840 if protocol_version != rpc::PROTOCOL_VERSION {
1841 return (
1842 StatusCode::UPGRADE_REQUIRED,
1843 "client must be upgraded".to_string(),
1844 )
1845 .into_response();
1846 }
1847 let socket_address = socket_address.to_string();
1848 ws.on_upgrade(move |socket| {
1849 use util::ResultExt;
1850 let socket = socket
1851 .map_ok(to_tungstenite_message)
1852 .err_into()
1853 .with(|message| async move { Ok(to_axum_message(message)) });
1854 let connection = Connection::new(Box::pin(socket));
1855 async move {
1856 server
1857 .handle_connection(connection, socket_address, user, None, RealExecutor)
1858 .await
1859 .log_err();
1860 }
1861 })
1862}
1863
1864pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1865 // We call `store_mut` here for its side effects of updating metrics.
1866 let metrics = server.store().await.metrics();
1867 METRIC_CONNECTIONS.set(metrics.connections as _);
1868 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1869 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1870 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1871
1872 let encoder = prometheus::TextEncoder::new();
1873 let metric_families = prometheus::gather();
1874 match encoder.encode_to_string(&metric_families) {
1875 Ok(string) => (StatusCode::OK, string).into_response(),
1876 Err(error) => (
1877 StatusCode::INTERNAL_SERVER_ERROR,
1878 format!("failed to encode metrics {:?}", error),
1879 )
1880 .into_response(),
1881 }
1882}
1883
1884fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1885 match message {
1886 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1887 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1888 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1889 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1890 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1891 code: frame.code.into(),
1892 reason: frame.reason,
1893 })),
1894 }
1895}
1896
1897fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1898 match message {
1899 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1900 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1901 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1902 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1903 AxumMessage::Close(frame) => {
1904 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1905 code: frame.code.into(),
1906 reason: frame.reason,
1907 }))
1908 }
1909 }
1910}
1911
1912pub trait ResultExt {
1913 type Ok;
1914
1915 fn trace_err(self) -> Option<Self::Ok>;
1916}
1917
1918impl<T, E> ResultExt for Result<T, E>
1919where
1920 E: std::fmt::Debug,
1921{
1922 type Ok = T;
1923
1924 fn trace_err(self) -> Option<T> {
1925 match self {
1926 Ok(value) => Some(value),
1927 Err(error) => {
1928 tracing::error!("{:?}", error);
1929 None
1930 }
1931 }
1932 }
1933}