1mod store;
2
3use crate::{
4 auth,
5 db::{self, ChannelId, MessageId, ProjectId, User, UserId},
6 AppState, Result,
7};
8use anyhow::anyhow;
9use async_tungstenite::tungstenite::{
10 protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
11};
12use axum::{
13 body::Body,
14 extract::{
15 ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
16 ConnectInfo, WebSocketUpgrade,
17 },
18 headers::{Header, HeaderName},
19 http::StatusCode,
20 middleware,
21 response::IntoResponse,
22 routing::get,
23 Extension, Router, TypedHeader,
24};
25use collections::HashMap;
26use futures::{
27 channel::mpsc,
28 future::{self, BoxFuture},
29 stream::FuturesUnordered,
30 FutureExt, SinkExt, StreamExt, TryStreamExt,
31};
32use lazy_static::lazy_static;
33use prometheus::{register_int_gauge, IntGauge};
34use rpc::{
35 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
36 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
37};
38use serde::{Serialize, Serializer};
39use std::{
40 any::TypeId,
41 future::Future,
42 marker::PhantomData,
43 net::SocketAddr,
44 ops::{Deref, DerefMut},
45 rc::Rc,
46 sync::{
47 atomic::{AtomicBool, Ordering::SeqCst},
48 Arc,
49 },
50 time::Duration,
51};
52use time::OffsetDateTime;
53use tokio::{
54 sync::{Mutex, MutexGuard},
55 time::Sleep,
56};
57use tower::ServiceBuilder;
58use tracing::{info_span, instrument, Instrument};
59
60pub use store::{Store, Worktree};
61
62lazy_static! {
63 static ref METRIC_CONNECTIONS: IntGauge =
64 register_int_gauge!("connections", "number of connections").unwrap();
65 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
66 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
67 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
68 register_int_gauge!("active_projects", "number of active projects").unwrap();
69 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
70 "shared_projects",
71 "number of open projects with one or more guests"
72 )
73 .unwrap();
74}
75
76type MessageHandler =
77 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
78
79struct Response<R> {
80 server: Arc<Server>,
81 receipt: Receipt<R>,
82 responded: Arc<AtomicBool>,
83}
84
85impl<R: RequestMessage> Response<R> {
86 fn send(self, payload: R::Response) -> Result<()> {
87 self.responded.store(true, SeqCst);
88 self.server.peer.respond(self.receipt, payload)?;
89 Ok(())
90 }
91}
92
93pub struct Server {
94 peer: Arc<Peer>,
95 pub(crate) store: Mutex<Store>,
96 app_state: Arc<AppState>,
97 handlers: HashMap<TypeId, MessageHandler>,
98 notifications: Option<mpsc::UnboundedSender<()>>,
99}
100
101pub trait Executor: Send + Clone {
102 type Sleep: Send + Future;
103 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
104 fn sleep(&self, duration: Duration) -> Self::Sleep;
105}
106
107#[derive(Clone)]
108pub struct RealExecutor;
109
110const MESSAGE_COUNT_PER_PAGE: usize = 100;
111const MAX_MESSAGE_LEN: usize = 1024;
112
113pub(crate) struct StoreGuard<'a> {
114 guard: MutexGuard<'a, Store>,
115 _not_send: PhantomData<Rc<()>>,
116}
117
118#[derive(Serialize)]
119pub struct ServerSnapshot<'a> {
120 peer: &'a Peer,
121 #[serde(serialize_with = "serialize_deref")]
122 store: StoreGuard<'a>,
123}
124
125pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
126where
127 S: Serializer,
128 T: Deref<Target = U>,
129 U: Serialize,
130{
131 Serialize::serialize(value.deref(), serializer)
132}
133
134impl Server {
135 pub fn new(
136 app_state: Arc<AppState>,
137 notifications: Option<mpsc::UnboundedSender<()>>,
138 ) -> Arc<Self> {
139 let mut server = Self {
140 peer: Peer::new(),
141 app_state,
142 store: Default::default(),
143 handlers: Default::default(),
144 notifications,
145 };
146
147 server
148 .add_request_handler(Server::ping)
149 .add_request_handler(Server::create_room)
150 .add_request_handler(Server::join_room)
151 .add_message_handler(Server::leave_room)
152 .add_request_handler(Server::call)
153 .add_message_handler(Server::decline_call)
154 .add_request_handler(Server::update_participant_location)
155 .add_request_handler(Server::share_project)
156 .add_message_handler(Server::unshare_project)
157 .add_request_handler(Server::join_project)
158 .add_message_handler(Server::leave_project)
159 .add_message_handler(Server::update_project)
160 .add_message_handler(Server::register_project_activity)
161 .add_request_handler(Server::update_worktree)
162 .add_message_handler(Server::update_worktree_extensions)
163 .add_message_handler(Server::start_language_server)
164 .add_message_handler(Server::update_language_server)
165 .add_message_handler(Server::update_diagnostic_summary)
166 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
167 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
168 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
170 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
171 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
172 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
173 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
176 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
177 .add_request_handler(
178 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
179 )
180 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
181 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
182 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
183 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
184 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
185 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
187 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
190 .add_message_handler(Server::create_buffer_for_peer)
191 .add_request_handler(Server::update_buffer)
192 .add_message_handler(Server::update_buffer_file)
193 .add_message_handler(Server::buffer_reloaded)
194 .add_message_handler(Server::buffer_saved)
195 .add_request_handler(Server::save_buffer)
196 .add_request_handler(Server::get_channels)
197 .add_request_handler(Server::get_users)
198 .add_request_handler(Server::fuzzy_search_users)
199 .add_request_handler(Server::request_contact)
200 .add_request_handler(Server::remove_contact)
201 .add_request_handler(Server::respond_to_contact_request)
202 .add_request_handler(Server::join_channel)
203 .add_message_handler(Server::leave_channel)
204 .add_request_handler(Server::send_channel_message)
205 .add_request_handler(Server::follow)
206 .add_message_handler(Server::unfollow)
207 .add_message_handler(Server::update_followers)
208 .add_request_handler(Server::get_channel_messages);
209
210 Arc::new(server)
211 }
212
213 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
214 where
215 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
216 Fut: 'static + Send + Future<Output = Result<()>>,
217 M: EnvelopedMessage,
218 {
219 let prev_handler = self.handlers.insert(
220 TypeId::of::<M>(),
221 Box::new(move |server, envelope| {
222 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
223 let span = info_span!(
224 "handle message",
225 payload_type = envelope.payload_type_name()
226 );
227 span.in_scope(|| {
228 tracing::info!(
229 payload_type = envelope.payload_type_name(),
230 "message received"
231 );
232 });
233 let future = (handler)(server, *envelope);
234 async move {
235 if let Err(error) = future.await {
236 tracing::error!(%error, "error handling message");
237 }
238 }
239 .instrument(span)
240 .boxed()
241 }),
242 );
243 if prev_handler.is_some() {
244 panic!("registered a handler for the same message twice");
245 }
246 self
247 }
248
249 /// Handle a request while holding a lock to the store. This is useful when we're registering
250 /// a connection but we want to respond on the connection before anybody else can send on it.
251 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
252 where
253 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
254 Fut: Send + Future<Output = Result<()>>,
255 M: RequestMessage,
256 {
257 let handler = Arc::new(handler);
258 self.add_message_handler(move |server, envelope| {
259 let receipt = envelope.receipt();
260 let handler = handler.clone();
261 async move {
262 let responded = Arc::new(AtomicBool::default());
263 let response = Response {
264 server: server.clone(),
265 responded: responded.clone(),
266 receipt: envelope.receipt(),
267 };
268 match (handler)(server.clone(), envelope, response).await {
269 Ok(()) => {
270 if responded.load(std::sync::atomic::Ordering::SeqCst) {
271 Ok(())
272 } else {
273 Err(anyhow!("handler did not send a response"))?
274 }
275 }
276 Err(error) => {
277 server.peer.respond_with_error(
278 receipt,
279 proto::Error {
280 message: error.to_string(),
281 },
282 )?;
283 Err(error)
284 }
285 }
286 }
287 })
288 }
289
290 /// Start a long lived task that records which users are active in which projects.
291 pub fn start_recording_project_activity<E: 'static + Executor>(
292 self: &Arc<Self>,
293 interval: Duration,
294 executor: E,
295 ) {
296 executor.spawn_detached({
297 let this = Arc::downgrade(self);
298 let executor = executor.clone();
299 async move {
300 let mut period_start = OffsetDateTime::now_utc();
301 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
302 loop {
303 let sleep = executor.sleep(interval);
304 sleep.await;
305 let this = if let Some(this) = this.upgrade() {
306 this
307 } else {
308 break;
309 };
310
311 active_projects.clear();
312 active_projects.extend(this.store().await.projects().flat_map(
313 |(project_id, project)| {
314 project.guests.values().chain([&project.host]).filter_map(
315 |collaborator| {
316 if !collaborator.admin
317 && collaborator
318 .last_activity
319 .map_or(false, |activity| activity > period_start)
320 {
321 Some((collaborator.user_id, *project_id))
322 } else {
323 None
324 }
325 },
326 )
327 },
328 ));
329
330 let period_end = OffsetDateTime::now_utc();
331 this.app_state
332 .db
333 .record_user_activity(period_start..period_end, &active_projects)
334 .await
335 .trace_err();
336 period_start = period_end;
337 }
338 }
339 });
340 }
341
342 pub fn handle_connection<E: Executor>(
343 self: &Arc<Self>,
344 connection: Connection,
345 address: String,
346 user: User,
347 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
348 executor: E,
349 ) -> impl Future<Output = Result<()>> {
350 let mut this = self.clone();
351 let user_id = user.id;
352 let login = user.github_login;
353 let span = info_span!("handle connection", %user_id, %login, %address);
354 async move {
355 let (connection_id, handle_io, mut incoming_rx) = this
356 .peer
357 .add_connection(connection, {
358 let executor = executor.clone();
359 move |duration| {
360 let timer = executor.sleep(duration);
361 async move {
362 timer.await;
363 }
364 }
365 })
366 .await;
367
368 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
369
370 if let Some(send_connection_id) = send_connection_id.as_mut() {
371 let _ = send_connection_id.send(connection_id).await;
372 }
373
374 if !user.connected_once {
375 this.peer.send(connection_id, proto::ShowContacts {})?;
376 this.app_state.db.set_user_connected_once(user_id, true).await?;
377 }
378
379 let (contacts, invite_code) = future::try_join(
380 this.app_state.db.get_contacts(user_id),
381 this.app_state.db.get_invite_code_for_user(user_id)
382 ).await?;
383
384 {
385 let mut store = this.store().await;
386 let incoming_call = store.add_connection(connection_id, user_id, user.admin);
387 if let Some(incoming_call) = incoming_call {
388 this.peer.send(connection_id, incoming_call)?;
389 }
390
391 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
392
393 if let Some((code, count)) = invite_code {
394 this.peer.send(connection_id, proto::UpdateInviteInfo {
395 url: format!("{}{}", this.app_state.invite_link_prefix, code),
396 count,
397 })?;
398 }
399 }
400 this.update_user_contacts(user_id).await?;
401
402 let handle_io = handle_io.fuse();
403 futures::pin_mut!(handle_io);
404
405 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
406 // This prevents deadlocks when e.g., client A performs a request to client B and
407 // client B performs a request to client A. If both clients stop processing further
408 // messages until their respective request completes, they won't have a chance to
409 // respond to the other client's request and cause a deadlock.
410 //
411 // This arrangement ensures we will attempt to process earlier messages first, but fall
412 // back to processing messages arrived later in the spirit of making progress.
413 let mut foreground_message_handlers = FuturesUnordered::new();
414 loop {
415 let next_message = incoming_rx.next().fuse();
416 futures::pin_mut!(next_message);
417 futures::select_biased! {
418 result = handle_io => {
419 if let Err(error) = result {
420 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
421 }
422 break;
423 }
424 _ = foreground_message_handlers.next() => {}
425 message = next_message => {
426 if let Some(message) = message {
427 let type_name = message.payload_type_name();
428 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
429 let span_enter = span.enter();
430 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
431 let notifications = this.notifications.clone();
432 let is_background = message.is_background();
433 let handle_message = (handler)(this.clone(), message);
434
435 drop(span_enter);
436 let handle_message = async move {
437 handle_message.await;
438 if let Some(mut notifications) = notifications {
439 let _ = notifications.send(()).await;
440 }
441 }.instrument(span);
442
443 if is_background {
444 executor.spawn_detached(handle_message);
445 } else {
446 foreground_message_handlers.push(handle_message);
447 }
448 } else {
449 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
450 }
451 } else {
452 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
453 break;
454 }
455 }
456 }
457 }
458
459 drop(foreground_message_handlers);
460 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
461 if let Err(error) = this.sign_out(connection_id).await {
462 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
463 }
464
465 Ok(())
466 }.instrument(span)
467 }
468
469 #[instrument(skip(self), err)]
470 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
471 self.peer.disconnect(connection_id);
472
473 let mut projects_to_unshare = Vec::new();
474 let removed_user_id;
475 {
476 let mut store = self.store().await;
477 let removed_connection = store.remove_connection(connection_id)?;
478
479 for (project_id, project) in removed_connection.hosted_projects {
480 projects_to_unshare.push(project_id);
481 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
482 self.peer.send(
483 conn_id,
484 proto::UnshareProject {
485 project_id: project_id.to_proto(),
486 },
487 )
488 });
489 }
490
491 for project_id in removed_connection.guest_project_ids {
492 if let Some(project) = store.project(project_id).trace_err() {
493 broadcast(connection_id, project.connection_ids(), |conn_id| {
494 self.peer.send(
495 conn_id,
496 proto::RemoveProjectCollaborator {
497 project_id: project_id.to_proto(),
498 peer_id: connection_id.0,
499 },
500 )
501 });
502 }
503 }
504
505 if let Some(room) = removed_connection
506 .room_id
507 .and_then(|room_id| store.room(room_id))
508 {
509 self.room_updated(room);
510 }
511
512 removed_user_id = removed_connection.user_id;
513 };
514
515 self.update_user_contacts(removed_user_id).await.trace_err();
516
517 for project_id in projects_to_unshare {
518 self.app_state
519 .db
520 .unregister_project(project_id)
521 .await
522 .trace_err();
523 }
524
525 Ok(())
526 }
527
528 pub async fn invite_code_redeemed(
529 self: &Arc<Self>,
530 code: &str,
531 invitee_id: UserId,
532 ) -> Result<()> {
533 let user = self.app_state.db.get_user_for_invite_code(code).await?;
534 let store = self.store().await;
535 let invitee_contact = store.contact_for_user(invitee_id, true);
536 for connection_id in store.connection_ids_for_user(user.id) {
537 self.peer.send(
538 connection_id,
539 proto::UpdateContacts {
540 contacts: vec![invitee_contact.clone()],
541 ..Default::default()
542 },
543 )?;
544 self.peer.send(
545 connection_id,
546 proto::UpdateInviteInfo {
547 url: format!("{}{}", self.app_state.invite_link_prefix, code),
548 count: user.invite_count as u32,
549 },
550 )?;
551 }
552 Ok(())
553 }
554
555 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
556 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
557 if let Some(invite_code) = &user.invite_code {
558 let store = self.store().await;
559 for connection_id in store.connection_ids_for_user(user_id) {
560 self.peer.send(
561 connection_id,
562 proto::UpdateInviteInfo {
563 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
564 count: user.invite_count as u32,
565 },
566 )?;
567 }
568 }
569 }
570 Ok(())
571 }
572
573 async fn ping(
574 self: Arc<Server>,
575 _: TypedEnvelope<proto::Ping>,
576 response: Response<proto::Ping>,
577 ) -> Result<()> {
578 response.send(proto::Ack {})?;
579 Ok(())
580 }
581
582 async fn create_room(
583 self: Arc<Server>,
584 request: TypedEnvelope<proto::CreateRoom>,
585 response: Response<proto::CreateRoom>,
586 ) -> Result<()> {
587 let room_id = self.store().await.create_room(request.sender_id)?;
588 response.send(proto::CreateRoomResponse { id: room_id })?;
589 Ok(())
590 }
591
592 async fn join_room(
593 self: Arc<Server>,
594 request: TypedEnvelope<proto::JoinRoom>,
595 response: Response<proto::JoinRoom>,
596 ) -> Result<()> {
597 let room_id = request.payload.id;
598 let mut store = self.store().await;
599 let (room, recipient_connection_ids) = store.join_room(room_id, request.sender_id)?;
600 for recipient_id in recipient_connection_ids {
601 self.peer
602 .send(recipient_id, proto::CancelCall {})
603 .trace_err();
604 }
605 response.send(proto::JoinRoomResponse {
606 room: Some(room.clone()),
607 })?;
608 self.room_updated(room);
609 Ok(())
610 }
611
612 async fn leave_room(self: Arc<Server>, message: TypedEnvelope<proto::LeaveRoom>) -> Result<()> {
613 let room_id = message.payload.id;
614 let mut store = self.store().await;
615 let left_room = store.leave_room(room_id, message.sender_id)?;
616
617 for project in left_room.unshared_projects {
618 for connection_id in project.connection_ids() {
619 self.peer.send(
620 connection_id,
621 proto::UnshareProject {
622 project_id: project.id.to_proto(),
623 },
624 )?;
625 }
626 }
627
628 for project in left_room.left_projects {
629 if project.remove_collaborator {
630 for connection_id in project.connection_ids {
631 self.peer.send(
632 connection_id,
633 proto::RemoveProjectCollaborator {
634 project_id: project.id.to_proto(),
635 peer_id: message.sender_id.0,
636 },
637 )?;
638 }
639
640 self.peer.send(
641 message.sender_id,
642 proto::UnshareProject {
643 project_id: project.id.to_proto(),
644 },
645 )?;
646 }
647 }
648
649 if let Some(room) = left_room.room {
650 self.room_updated(room);
651 }
652 Ok(())
653 }
654
655 async fn call(
656 self: Arc<Server>,
657 request: TypedEnvelope<proto::Call>,
658 response: Response<proto::Call>,
659 ) -> Result<()> {
660 let caller_user_id = self
661 .store()
662 .await
663 .user_id_for_connection(request.sender_id)?;
664 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
665 let initial_project_id = request
666 .payload
667 .initial_project_id
668 .map(ProjectId::from_proto);
669 if !self
670 .app_state
671 .db
672 .has_contact(caller_user_id, recipient_user_id)
673 .await?
674 {
675 return Err(anyhow!("cannot call a user who isn't a contact"))?;
676 }
677
678 let room_id = request.payload.room_id;
679 let mut calls = {
680 let mut store = self.store().await;
681 let (room, recipient_connection_ids, incoming_call) = store.call(
682 room_id,
683 recipient_user_id,
684 initial_project_id,
685 request.sender_id,
686 )?;
687 self.room_updated(room);
688 recipient_connection_ids
689 .into_iter()
690 .map(|recipient_connection_id| {
691 self.peer
692 .request(recipient_connection_id, incoming_call.clone())
693 })
694 .collect::<FuturesUnordered<_>>()
695 };
696
697 while let Some(call_response) = calls.next().await {
698 match call_response.as_ref() {
699 Ok(_) => {
700 response.send(proto::Ack {})?;
701 return Ok(());
702 }
703 Err(_) => {
704 call_response.trace_err();
705 }
706 }
707 }
708
709 {
710 let mut store = self.store().await;
711 let room = store.call_failed(room_id, recipient_user_id)?;
712 self.room_updated(&room);
713 }
714
715 Err(anyhow!("failed to ring call recipient"))?
716 }
717
718 async fn decline_call(
719 self: Arc<Server>,
720 message: TypedEnvelope<proto::DeclineCall>,
721 ) -> Result<()> {
722 let mut store = self.store().await;
723 let (room, recipient_connection_ids) = store.call_declined(message.sender_id)?;
724 for recipient_id in recipient_connection_ids {
725 self.peer
726 .send(recipient_id, proto::CancelCall {})
727 .trace_err();
728 }
729 self.room_updated(room);
730 Ok(())
731 }
732
733 async fn update_participant_location(
734 self: Arc<Server>,
735 request: TypedEnvelope<proto::UpdateParticipantLocation>,
736 response: Response<proto::UpdateParticipantLocation>,
737 ) -> Result<()> {
738 let room_id = request.payload.room_id;
739 let location = request
740 .payload
741 .location
742 .ok_or_else(|| anyhow!("invalid location"))?;
743 let mut store = self.store().await;
744 let room = store.update_participant_location(room_id, location, request.sender_id)?;
745 self.room_updated(room);
746 response.send(proto::Ack {})?;
747 Ok(())
748 }
749
750 fn room_updated(&self, room: &proto::Room) {
751 for participant in &room.participants {
752 self.peer
753 .send(
754 ConnectionId(participant.peer_id),
755 proto::RoomUpdated {
756 room: Some(room.clone()),
757 },
758 )
759 .trace_err();
760 }
761 }
762
763 async fn share_project(
764 self: Arc<Server>,
765 request: TypedEnvelope<proto::ShareProject>,
766 response: Response<proto::ShareProject>,
767 ) -> Result<()> {
768 let user_id = self
769 .store()
770 .await
771 .user_id_for_connection(request.sender_id)?;
772 let project_id = self.app_state.db.register_project(user_id).await?;
773 let mut store = self.store().await;
774 let room = store.share_project(request.payload.room_id, project_id, request.sender_id)?;
775 response.send(proto::ShareProjectResponse {
776 project_id: project_id.to_proto(),
777 })?;
778 self.room_updated(room);
779
780 Ok(())
781 }
782
783 async fn unshare_project(
784 self: Arc<Server>,
785 message: TypedEnvelope<proto::UnshareProject>,
786 ) -> Result<()> {
787 let project_id = ProjectId::from_proto(message.payload.project_id);
788 let mut store = self.store().await;
789 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
790 broadcast(
791 message.sender_id,
792 project.guest_connection_ids(),
793 |conn_id| self.peer.send(conn_id, message.payload.clone()),
794 );
795 self.room_updated(room);
796
797 Ok(())
798 }
799
800 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
801 let contacts = self.app_state.db.get_contacts(user_id).await?;
802 let store = self.store().await;
803 let updated_contact = store.contact_for_user(user_id, false);
804 for contact in contacts {
805 if let db::Contact::Accepted {
806 user_id: contact_user_id,
807 ..
808 } = contact
809 {
810 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
811 self.peer
812 .send(
813 contact_conn_id,
814 proto::UpdateContacts {
815 contacts: vec![updated_contact.clone()],
816 remove_contacts: Default::default(),
817 incoming_requests: Default::default(),
818 remove_incoming_requests: Default::default(),
819 outgoing_requests: Default::default(),
820 remove_outgoing_requests: Default::default(),
821 },
822 )
823 .trace_err();
824 }
825 }
826 }
827 Ok(())
828 }
829
830 async fn join_project(
831 self: Arc<Server>,
832 request: TypedEnvelope<proto::JoinProject>,
833 response: Response<proto::JoinProject>,
834 ) -> Result<()> {
835 let project_id = ProjectId::from_proto(request.payload.project_id);
836
837 let host_user_id;
838 let guest_user_id;
839 let host_connection_id;
840 {
841 let state = self.store().await;
842 let project = state.project(project_id)?;
843 host_user_id = project.host.user_id;
844 host_connection_id = project.host_connection_id;
845 guest_user_id = state.user_id_for_connection(request.sender_id)?;
846 };
847
848 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
849
850 let mut store = self.store().await;
851 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
852 let peer_count = project.guests.len();
853 let mut collaborators = Vec::with_capacity(peer_count);
854 collaborators.push(proto::Collaborator {
855 peer_id: project.host_connection_id.0,
856 replica_id: 0,
857 user_id: project.host.user_id.to_proto(),
858 });
859 let worktrees = project
860 .worktrees
861 .iter()
862 .map(|(id, worktree)| proto::WorktreeMetadata {
863 id: *id,
864 root_name: worktree.root_name.clone(),
865 visible: worktree.visible,
866 })
867 .collect::<Vec<_>>();
868
869 // Add all guests other than the requesting user's own connections as collaborators
870 for (guest_conn_id, guest) in &project.guests {
871 if request.sender_id != *guest_conn_id {
872 collaborators.push(proto::Collaborator {
873 peer_id: guest_conn_id.0,
874 replica_id: guest.replica_id as u32,
875 user_id: guest.user_id.to_proto(),
876 });
877 }
878 }
879
880 for conn_id in project.connection_ids() {
881 if conn_id != request.sender_id {
882 self.peer.send(
883 conn_id,
884 proto::AddProjectCollaborator {
885 project_id: project_id.to_proto(),
886 collaborator: Some(proto::Collaborator {
887 peer_id: request.sender_id.0,
888 replica_id: replica_id as u32,
889 user_id: guest_user_id.to_proto(),
890 }),
891 },
892 )?;
893 }
894 }
895
896 // First, we send the metadata associated with each worktree.
897 response.send(proto::JoinProjectResponse {
898 worktrees: worktrees.clone(),
899 replica_id: replica_id as u32,
900 collaborators: collaborators.clone(),
901 language_servers: project.language_servers.clone(),
902 })?;
903
904 for (worktree_id, worktree) in &project.worktrees {
905 #[cfg(any(test, feature = "test-support"))]
906 const MAX_CHUNK_SIZE: usize = 2;
907 #[cfg(not(any(test, feature = "test-support")))]
908 const MAX_CHUNK_SIZE: usize = 256;
909
910 // Stream this worktree's entries.
911 let message = proto::UpdateWorktree {
912 project_id: project_id.to_proto(),
913 worktree_id: *worktree_id,
914 root_name: worktree.root_name.clone(),
915 updated_entries: worktree.entries.values().cloned().collect(),
916 removed_entries: Default::default(),
917 scan_id: worktree.scan_id,
918 is_last_update: worktree.is_complete,
919 };
920 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
921 self.peer.send(request.sender_id, update.clone())?;
922 }
923
924 // Stream this worktree's diagnostics.
925 for summary in worktree.diagnostic_summaries.values() {
926 self.peer.send(
927 request.sender_id,
928 proto::UpdateDiagnosticSummary {
929 project_id: project_id.to_proto(),
930 worktree_id: *worktree_id,
931 summary: Some(summary.clone()),
932 },
933 )?;
934 }
935 }
936
937 Ok(())
938 }
939
940 async fn leave_project(
941 self: Arc<Server>,
942 request: TypedEnvelope<proto::LeaveProject>,
943 ) -> Result<()> {
944 let sender_id = request.sender_id;
945 let project_id = ProjectId::from_proto(request.payload.project_id);
946 let project;
947 {
948 let mut store = self.store().await;
949 project = store.leave_project(project_id, sender_id)?;
950 tracing::info!(
951 %project_id,
952 host_user_id = %project.host_user_id,
953 host_connection_id = %project.host_connection_id,
954 "leave project"
955 );
956
957 if project.remove_collaborator {
958 broadcast(sender_id, project.connection_ids, |conn_id| {
959 self.peer.send(
960 conn_id,
961 proto::RemoveProjectCollaborator {
962 project_id: project_id.to_proto(),
963 peer_id: sender_id.0,
964 },
965 )
966 });
967 }
968 }
969
970 Ok(())
971 }
972
973 async fn update_project(
974 self: Arc<Server>,
975 request: TypedEnvelope<proto::UpdateProject>,
976 ) -> Result<()> {
977 let project_id = ProjectId::from_proto(request.payload.project_id);
978 {
979 let mut state = self.store().await;
980 let guest_connection_ids = state
981 .read_project(project_id, request.sender_id)?
982 .guest_connection_ids();
983 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
984 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
985 self.peer
986 .forward_send(request.sender_id, connection_id, request.payload.clone())
987 });
988 };
989
990 Ok(())
991 }
992
993 async fn register_project_activity(
994 self: Arc<Server>,
995 request: TypedEnvelope<proto::RegisterProjectActivity>,
996 ) -> Result<()> {
997 self.store().await.register_project_activity(
998 ProjectId::from_proto(request.payload.project_id),
999 request.sender_id,
1000 )?;
1001 Ok(())
1002 }
1003
1004 async fn update_worktree(
1005 self: Arc<Server>,
1006 request: TypedEnvelope<proto::UpdateWorktree>,
1007 response: Response<proto::UpdateWorktree>,
1008 ) -> Result<()> {
1009 let project_id = ProjectId::from_proto(request.payload.project_id);
1010 let worktree_id = request.payload.worktree_id;
1011 let connection_ids = self.store().await.update_worktree(
1012 request.sender_id,
1013 project_id,
1014 worktree_id,
1015 &request.payload.root_name,
1016 &request.payload.removed_entries,
1017 &request.payload.updated_entries,
1018 request.payload.scan_id,
1019 request.payload.is_last_update,
1020 )?;
1021
1022 broadcast(request.sender_id, connection_ids, |connection_id| {
1023 self.peer
1024 .forward_send(request.sender_id, connection_id, request.payload.clone())
1025 });
1026 response.send(proto::Ack {})?;
1027 Ok(())
1028 }
1029
1030 async fn update_worktree_extensions(
1031 self: Arc<Server>,
1032 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1033 ) -> Result<()> {
1034 let project_id = ProjectId::from_proto(request.payload.project_id);
1035 let worktree_id = request.payload.worktree_id;
1036 let extensions = request
1037 .payload
1038 .extensions
1039 .into_iter()
1040 .zip(request.payload.counts)
1041 .collect();
1042 self.app_state
1043 .db
1044 .update_worktree_extensions(project_id, worktree_id, extensions)
1045 .await?;
1046 Ok(())
1047 }
1048
1049 async fn update_diagnostic_summary(
1050 self: Arc<Server>,
1051 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1052 ) -> Result<()> {
1053 let summary = request
1054 .payload
1055 .summary
1056 .clone()
1057 .ok_or_else(|| anyhow!("invalid summary"))?;
1058 let receiver_ids = self.store().await.update_diagnostic_summary(
1059 ProjectId::from_proto(request.payload.project_id),
1060 request.payload.worktree_id,
1061 request.sender_id,
1062 summary,
1063 )?;
1064
1065 broadcast(request.sender_id, receiver_ids, |connection_id| {
1066 self.peer
1067 .forward_send(request.sender_id, connection_id, request.payload.clone())
1068 });
1069 Ok(())
1070 }
1071
1072 async fn start_language_server(
1073 self: Arc<Server>,
1074 request: TypedEnvelope<proto::StartLanguageServer>,
1075 ) -> Result<()> {
1076 let receiver_ids = self.store().await.start_language_server(
1077 ProjectId::from_proto(request.payload.project_id),
1078 request.sender_id,
1079 request
1080 .payload
1081 .server
1082 .clone()
1083 .ok_or_else(|| anyhow!("invalid language server"))?,
1084 )?;
1085 broadcast(request.sender_id, receiver_ids, |connection_id| {
1086 self.peer
1087 .forward_send(request.sender_id, connection_id, request.payload.clone())
1088 });
1089 Ok(())
1090 }
1091
1092 async fn update_language_server(
1093 self: Arc<Server>,
1094 request: TypedEnvelope<proto::UpdateLanguageServer>,
1095 ) -> Result<()> {
1096 let receiver_ids = self.store().await.project_connection_ids(
1097 ProjectId::from_proto(request.payload.project_id),
1098 request.sender_id,
1099 )?;
1100 broadcast(request.sender_id, receiver_ids, |connection_id| {
1101 self.peer
1102 .forward_send(request.sender_id, connection_id, request.payload.clone())
1103 });
1104 Ok(())
1105 }
1106
1107 async fn forward_project_request<T>(
1108 self: Arc<Server>,
1109 request: TypedEnvelope<T>,
1110 response: Response<T>,
1111 ) -> Result<()>
1112 where
1113 T: EntityMessage + RequestMessage,
1114 {
1115 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1116 let host_connection_id = self
1117 .store()
1118 .await
1119 .read_project(project_id, request.sender_id)?
1120 .host_connection_id;
1121 let payload = self
1122 .peer
1123 .forward_request(request.sender_id, host_connection_id, request.payload)
1124 .await?;
1125
1126 // Ensure project still exists by the time we get the response from the host.
1127 self.store()
1128 .await
1129 .read_project(project_id, request.sender_id)?;
1130
1131 response.send(payload)?;
1132 Ok(())
1133 }
1134
1135 async fn save_buffer(
1136 self: Arc<Server>,
1137 request: TypedEnvelope<proto::SaveBuffer>,
1138 response: Response<proto::SaveBuffer>,
1139 ) -> Result<()> {
1140 let project_id = ProjectId::from_proto(request.payload.project_id);
1141 let host = self
1142 .store()
1143 .await
1144 .read_project(project_id, request.sender_id)?
1145 .host_connection_id;
1146 let response_payload = self
1147 .peer
1148 .forward_request(request.sender_id, host, request.payload.clone())
1149 .await?;
1150
1151 let mut guests = self
1152 .store()
1153 .await
1154 .read_project(project_id, request.sender_id)?
1155 .connection_ids();
1156 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1157 broadcast(host, guests, |conn_id| {
1158 self.peer
1159 .forward_send(host, conn_id, response_payload.clone())
1160 });
1161 response.send(response_payload)?;
1162 Ok(())
1163 }
1164
1165 async fn create_buffer_for_peer(
1166 self: Arc<Server>,
1167 request: TypedEnvelope<proto::CreateBufferForPeer>,
1168 ) -> Result<()> {
1169 self.peer.forward_send(
1170 request.sender_id,
1171 ConnectionId(request.payload.peer_id),
1172 request.payload,
1173 )?;
1174 Ok(())
1175 }
1176
1177 async fn update_buffer(
1178 self: Arc<Server>,
1179 request: TypedEnvelope<proto::UpdateBuffer>,
1180 response: Response<proto::UpdateBuffer>,
1181 ) -> Result<()> {
1182 let project_id = ProjectId::from_proto(request.payload.project_id);
1183 let receiver_ids = {
1184 let mut store = self.store().await;
1185 store.register_project_activity(project_id, request.sender_id)?;
1186 store.project_connection_ids(project_id, request.sender_id)?
1187 };
1188
1189 broadcast(request.sender_id, receiver_ids, |connection_id| {
1190 self.peer
1191 .forward_send(request.sender_id, connection_id, request.payload.clone())
1192 });
1193 response.send(proto::Ack {})?;
1194 Ok(())
1195 }
1196
1197 async fn update_buffer_file(
1198 self: Arc<Server>,
1199 request: TypedEnvelope<proto::UpdateBufferFile>,
1200 ) -> Result<()> {
1201 let receiver_ids = self.store().await.project_connection_ids(
1202 ProjectId::from_proto(request.payload.project_id),
1203 request.sender_id,
1204 )?;
1205 broadcast(request.sender_id, receiver_ids, |connection_id| {
1206 self.peer
1207 .forward_send(request.sender_id, connection_id, request.payload.clone())
1208 });
1209 Ok(())
1210 }
1211
1212 async fn buffer_reloaded(
1213 self: Arc<Server>,
1214 request: TypedEnvelope<proto::BufferReloaded>,
1215 ) -> Result<()> {
1216 let receiver_ids = self.store().await.project_connection_ids(
1217 ProjectId::from_proto(request.payload.project_id),
1218 request.sender_id,
1219 )?;
1220 broadcast(request.sender_id, receiver_ids, |connection_id| {
1221 self.peer
1222 .forward_send(request.sender_id, connection_id, request.payload.clone())
1223 });
1224 Ok(())
1225 }
1226
1227 async fn buffer_saved(
1228 self: Arc<Server>,
1229 request: TypedEnvelope<proto::BufferSaved>,
1230 ) -> Result<()> {
1231 let receiver_ids = self.store().await.project_connection_ids(
1232 ProjectId::from_proto(request.payload.project_id),
1233 request.sender_id,
1234 )?;
1235 broadcast(request.sender_id, receiver_ids, |connection_id| {
1236 self.peer
1237 .forward_send(request.sender_id, connection_id, request.payload.clone())
1238 });
1239 Ok(())
1240 }
1241
1242 async fn follow(
1243 self: Arc<Self>,
1244 request: TypedEnvelope<proto::Follow>,
1245 response: Response<proto::Follow>,
1246 ) -> Result<()> {
1247 let project_id = ProjectId::from_proto(request.payload.project_id);
1248 let leader_id = ConnectionId(request.payload.leader_id);
1249 let follower_id = request.sender_id;
1250 {
1251 let mut store = self.store().await;
1252 if !store
1253 .project_connection_ids(project_id, follower_id)?
1254 .contains(&leader_id)
1255 {
1256 Err(anyhow!("no such peer"))?;
1257 }
1258
1259 store.register_project_activity(project_id, follower_id)?;
1260 }
1261
1262 let mut response_payload = self
1263 .peer
1264 .forward_request(request.sender_id, leader_id, request.payload)
1265 .await?;
1266 response_payload
1267 .views
1268 .retain(|view| view.leader_id != Some(follower_id.0));
1269 response.send(response_payload)?;
1270 Ok(())
1271 }
1272
1273 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1274 let project_id = ProjectId::from_proto(request.payload.project_id);
1275 let leader_id = ConnectionId(request.payload.leader_id);
1276 let mut store = self.store().await;
1277 if !store
1278 .project_connection_ids(project_id, request.sender_id)?
1279 .contains(&leader_id)
1280 {
1281 Err(anyhow!("no such peer"))?;
1282 }
1283 store.register_project_activity(project_id, request.sender_id)?;
1284 self.peer
1285 .forward_send(request.sender_id, leader_id, request.payload)?;
1286 Ok(())
1287 }
1288
1289 async fn update_followers(
1290 self: Arc<Self>,
1291 request: TypedEnvelope<proto::UpdateFollowers>,
1292 ) -> Result<()> {
1293 let project_id = ProjectId::from_proto(request.payload.project_id);
1294 let mut store = self.store().await;
1295 store.register_project_activity(project_id, request.sender_id)?;
1296 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1297 let leader_id = request
1298 .payload
1299 .variant
1300 .as_ref()
1301 .and_then(|variant| match variant {
1302 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1303 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1304 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1305 });
1306 for follower_id in &request.payload.follower_ids {
1307 let follower_id = ConnectionId(*follower_id);
1308 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1309 self.peer
1310 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1311 }
1312 }
1313 Ok(())
1314 }
1315
1316 async fn get_channels(
1317 self: Arc<Server>,
1318 request: TypedEnvelope<proto::GetChannels>,
1319 response: Response<proto::GetChannels>,
1320 ) -> Result<()> {
1321 let user_id = self
1322 .store()
1323 .await
1324 .user_id_for_connection(request.sender_id)?;
1325 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1326 response.send(proto::GetChannelsResponse {
1327 channels: channels
1328 .into_iter()
1329 .map(|chan| proto::Channel {
1330 id: chan.id.to_proto(),
1331 name: chan.name,
1332 })
1333 .collect(),
1334 })?;
1335 Ok(())
1336 }
1337
1338 async fn get_users(
1339 self: Arc<Server>,
1340 request: TypedEnvelope<proto::GetUsers>,
1341 response: Response<proto::GetUsers>,
1342 ) -> Result<()> {
1343 let user_ids = request
1344 .payload
1345 .user_ids
1346 .into_iter()
1347 .map(UserId::from_proto)
1348 .collect();
1349 let users = self
1350 .app_state
1351 .db
1352 .get_users_by_ids(user_ids)
1353 .await?
1354 .into_iter()
1355 .map(|user| proto::User {
1356 id: user.id.to_proto(),
1357 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1358 github_login: user.github_login,
1359 })
1360 .collect();
1361 response.send(proto::UsersResponse { users })?;
1362 Ok(())
1363 }
1364
1365 async fn fuzzy_search_users(
1366 self: Arc<Server>,
1367 request: TypedEnvelope<proto::FuzzySearchUsers>,
1368 response: Response<proto::FuzzySearchUsers>,
1369 ) -> Result<()> {
1370 let user_id = self
1371 .store()
1372 .await
1373 .user_id_for_connection(request.sender_id)?;
1374 let query = request.payload.query;
1375 let db = &self.app_state.db;
1376 let users = match query.len() {
1377 0 => vec![],
1378 1 | 2 => db
1379 .get_user_by_github_login(&query)
1380 .await?
1381 .into_iter()
1382 .collect(),
1383 _ => db.fuzzy_search_users(&query, 10).await?,
1384 };
1385 let users = users
1386 .into_iter()
1387 .filter(|user| user.id != user_id)
1388 .map(|user| proto::User {
1389 id: user.id.to_proto(),
1390 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1391 github_login: user.github_login,
1392 })
1393 .collect();
1394 response.send(proto::UsersResponse { users })?;
1395 Ok(())
1396 }
1397
1398 async fn request_contact(
1399 self: Arc<Server>,
1400 request: TypedEnvelope<proto::RequestContact>,
1401 response: Response<proto::RequestContact>,
1402 ) -> Result<()> {
1403 let requester_id = self
1404 .store()
1405 .await
1406 .user_id_for_connection(request.sender_id)?;
1407 let responder_id = UserId::from_proto(request.payload.responder_id);
1408 if requester_id == responder_id {
1409 return Err(anyhow!("cannot add yourself as a contact"))?;
1410 }
1411
1412 self.app_state
1413 .db
1414 .send_contact_request(requester_id, responder_id)
1415 .await?;
1416
1417 // Update outgoing contact requests of requester
1418 let mut update = proto::UpdateContacts::default();
1419 update.outgoing_requests.push(responder_id.to_proto());
1420 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1421 self.peer.send(connection_id, update.clone())?;
1422 }
1423
1424 // Update incoming contact requests of responder
1425 let mut update = proto::UpdateContacts::default();
1426 update
1427 .incoming_requests
1428 .push(proto::IncomingContactRequest {
1429 requester_id: requester_id.to_proto(),
1430 should_notify: true,
1431 });
1432 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1433 self.peer.send(connection_id, update.clone())?;
1434 }
1435
1436 response.send(proto::Ack {})?;
1437 Ok(())
1438 }
1439
1440 async fn respond_to_contact_request(
1441 self: Arc<Server>,
1442 request: TypedEnvelope<proto::RespondToContactRequest>,
1443 response: Response<proto::RespondToContactRequest>,
1444 ) -> Result<()> {
1445 let responder_id = self
1446 .store()
1447 .await
1448 .user_id_for_connection(request.sender_id)?;
1449 let requester_id = UserId::from_proto(request.payload.requester_id);
1450 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1451 self.app_state
1452 .db
1453 .dismiss_contact_notification(responder_id, requester_id)
1454 .await?;
1455 } else {
1456 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1457 self.app_state
1458 .db
1459 .respond_to_contact_request(responder_id, requester_id, accept)
1460 .await?;
1461
1462 let store = self.store().await;
1463 // Update responder with new contact
1464 let mut update = proto::UpdateContacts::default();
1465 if accept {
1466 update
1467 .contacts
1468 .push(store.contact_for_user(requester_id, false));
1469 }
1470 update
1471 .remove_incoming_requests
1472 .push(requester_id.to_proto());
1473 for connection_id in store.connection_ids_for_user(responder_id) {
1474 self.peer.send(connection_id, update.clone())?;
1475 }
1476
1477 // Update requester with new contact
1478 let mut update = proto::UpdateContacts::default();
1479 if accept {
1480 update
1481 .contacts
1482 .push(store.contact_for_user(responder_id, true));
1483 }
1484 update
1485 .remove_outgoing_requests
1486 .push(responder_id.to_proto());
1487 for connection_id in store.connection_ids_for_user(requester_id) {
1488 self.peer.send(connection_id, update.clone())?;
1489 }
1490 }
1491
1492 response.send(proto::Ack {})?;
1493 Ok(())
1494 }
1495
1496 async fn remove_contact(
1497 self: Arc<Server>,
1498 request: TypedEnvelope<proto::RemoveContact>,
1499 response: Response<proto::RemoveContact>,
1500 ) -> Result<()> {
1501 let requester_id = self
1502 .store()
1503 .await
1504 .user_id_for_connection(request.sender_id)?;
1505 let responder_id = UserId::from_proto(request.payload.user_id);
1506 self.app_state
1507 .db
1508 .remove_contact(requester_id, responder_id)
1509 .await?;
1510
1511 // Update outgoing contact requests of requester
1512 let mut update = proto::UpdateContacts::default();
1513 update
1514 .remove_outgoing_requests
1515 .push(responder_id.to_proto());
1516 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1517 self.peer.send(connection_id, update.clone())?;
1518 }
1519
1520 // Update incoming contact requests of responder
1521 let mut update = proto::UpdateContacts::default();
1522 update
1523 .remove_incoming_requests
1524 .push(requester_id.to_proto());
1525 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1526 self.peer.send(connection_id, update.clone())?;
1527 }
1528
1529 response.send(proto::Ack {})?;
1530 Ok(())
1531 }
1532
1533 async fn join_channel(
1534 self: Arc<Self>,
1535 request: TypedEnvelope<proto::JoinChannel>,
1536 response: Response<proto::JoinChannel>,
1537 ) -> Result<()> {
1538 let user_id = self
1539 .store()
1540 .await
1541 .user_id_for_connection(request.sender_id)?;
1542 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1543 if !self
1544 .app_state
1545 .db
1546 .can_user_access_channel(user_id, channel_id)
1547 .await?
1548 {
1549 Err(anyhow!("access denied"))?;
1550 }
1551
1552 self.store()
1553 .await
1554 .join_channel(request.sender_id, channel_id);
1555 let messages = self
1556 .app_state
1557 .db
1558 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1559 .await?
1560 .into_iter()
1561 .map(|msg| proto::ChannelMessage {
1562 id: msg.id.to_proto(),
1563 body: msg.body,
1564 timestamp: msg.sent_at.unix_timestamp() as u64,
1565 sender_id: msg.sender_id.to_proto(),
1566 nonce: Some(msg.nonce.as_u128().into()),
1567 })
1568 .collect::<Vec<_>>();
1569 response.send(proto::JoinChannelResponse {
1570 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1571 messages,
1572 })?;
1573 Ok(())
1574 }
1575
1576 async fn leave_channel(
1577 self: Arc<Self>,
1578 request: TypedEnvelope<proto::LeaveChannel>,
1579 ) -> Result<()> {
1580 let user_id = self
1581 .store()
1582 .await
1583 .user_id_for_connection(request.sender_id)?;
1584 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1585 if !self
1586 .app_state
1587 .db
1588 .can_user_access_channel(user_id, channel_id)
1589 .await?
1590 {
1591 Err(anyhow!("access denied"))?;
1592 }
1593
1594 self.store()
1595 .await
1596 .leave_channel(request.sender_id, channel_id);
1597
1598 Ok(())
1599 }
1600
1601 async fn send_channel_message(
1602 self: Arc<Self>,
1603 request: TypedEnvelope<proto::SendChannelMessage>,
1604 response: Response<proto::SendChannelMessage>,
1605 ) -> Result<()> {
1606 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1607 let user_id;
1608 let connection_ids;
1609 {
1610 let state = self.store().await;
1611 user_id = state.user_id_for_connection(request.sender_id)?;
1612 connection_ids = state.channel_connection_ids(channel_id)?;
1613 }
1614
1615 // Validate the message body.
1616 let body = request.payload.body.trim().to_string();
1617 if body.len() > MAX_MESSAGE_LEN {
1618 return Err(anyhow!("message is too long"))?;
1619 }
1620 if body.is_empty() {
1621 return Err(anyhow!("message can't be blank"))?;
1622 }
1623
1624 let timestamp = OffsetDateTime::now_utc();
1625 let nonce = request
1626 .payload
1627 .nonce
1628 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1629
1630 let message_id = self
1631 .app_state
1632 .db
1633 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1634 .await?
1635 .to_proto();
1636 let message = proto::ChannelMessage {
1637 sender_id: user_id.to_proto(),
1638 id: message_id,
1639 body,
1640 timestamp: timestamp.unix_timestamp() as u64,
1641 nonce: Some(nonce),
1642 };
1643 broadcast(request.sender_id, connection_ids, |conn_id| {
1644 self.peer.send(
1645 conn_id,
1646 proto::ChannelMessageSent {
1647 channel_id: channel_id.to_proto(),
1648 message: Some(message.clone()),
1649 },
1650 )
1651 });
1652 response.send(proto::SendChannelMessageResponse {
1653 message: Some(message),
1654 })?;
1655 Ok(())
1656 }
1657
1658 async fn get_channel_messages(
1659 self: Arc<Self>,
1660 request: TypedEnvelope<proto::GetChannelMessages>,
1661 response: Response<proto::GetChannelMessages>,
1662 ) -> Result<()> {
1663 let user_id = self
1664 .store()
1665 .await
1666 .user_id_for_connection(request.sender_id)?;
1667 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1668 if !self
1669 .app_state
1670 .db
1671 .can_user_access_channel(user_id, channel_id)
1672 .await?
1673 {
1674 Err(anyhow!("access denied"))?;
1675 }
1676
1677 let messages = self
1678 .app_state
1679 .db
1680 .get_channel_messages(
1681 channel_id,
1682 MESSAGE_COUNT_PER_PAGE,
1683 Some(MessageId::from_proto(request.payload.before_message_id)),
1684 )
1685 .await?
1686 .into_iter()
1687 .map(|msg| proto::ChannelMessage {
1688 id: msg.id.to_proto(),
1689 body: msg.body,
1690 timestamp: msg.sent_at.unix_timestamp() as u64,
1691 sender_id: msg.sender_id.to_proto(),
1692 nonce: Some(msg.nonce.as_u128().into()),
1693 })
1694 .collect::<Vec<_>>();
1695 response.send(proto::GetChannelMessagesResponse {
1696 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1697 messages,
1698 })?;
1699 Ok(())
1700 }
1701
1702 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1703 #[cfg(test)]
1704 tokio::task::yield_now().await;
1705 let guard = self.store.lock().await;
1706 #[cfg(test)]
1707 tokio::task::yield_now().await;
1708 StoreGuard {
1709 guard,
1710 _not_send: PhantomData,
1711 }
1712 }
1713
1714 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1715 ServerSnapshot {
1716 store: self.store().await,
1717 peer: &self.peer,
1718 }
1719 }
1720}
1721
1722impl<'a> Deref for StoreGuard<'a> {
1723 type Target = Store;
1724
1725 fn deref(&self) -> &Self::Target {
1726 &*self.guard
1727 }
1728}
1729
1730impl<'a> DerefMut for StoreGuard<'a> {
1731 fn deref_mut(&mut self) -> &mut Self::Target {
1732 &mut *self.guard
1733 }
1734}
1735
1736impl<'a> Drop for StoreGuard<'a> {
1737 fn drop(&mut self) {
1738 #[cfg(test)]
1739 self.check_invariants();
1740 }
1741}
1742
1743impl Executor for RealExecutor {
1744 type Sleep = Sleep;
1745
1746 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1747 tokio::task::spawn(future);
1748 }
1749
1750 fn sleep(&self, duration: Duration) -> Self::Sleep {
1751 tokio::time::sleep(duration)
1752 }
1753}
1754
1755fn broadcast<F>(
1756 sender_id: ConnectionId,
1757 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1758 mut f: F,
1759) where
1760 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1761{
1762 for receiver_id in receiver_ids {
1763 if receiver_id != sender_id {
1764 f(receiver_id).trace_err();
1765 }
1766 }
1767}
1768
1769lazy_static! {
1770 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1771}
1772
1773pub struct ProtocolVersion(u32);
1774
1775impl Header for ProtocolVersion {
1776 fn name() -> &'static HeaderName {
1777 &ZED_PROTOCOL_VERSION
1778 }
1779
1780 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1781 where
1782 Self: Sized,
1783 I: Iterator<Item = &'i axum::http::HeaderValue>,
1784 {
1785 let version = values
1786 .next()
1787 .ok_or_else(axum::headers::Error::invalid)?
1788 .to_str()
1789 .map_err(|_| axum::headers::Error::invalid())?
1790 .parse()
1791 .map_err(|_| axum::headers::Error::invalid())?;
1792 Ok(Self(version))
1793 }
1794
1795 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1796 values.extend([self.0.to_string().parse().unwrap()]);
1797 }
1798}
1799
1800pub fn routes(server: Arc<Server>) -> Router<Body> {
1801 Router::new()
1802 .route("/rpc", get(handle_websocket_request))
1803 .layer(
1804 ServiceBuilder::new()
1805 .layer(Extension(server.app_state.clone()))
1806 .layer(middleware::from_fn(auth::validate_header)),
1807 )
1808 .route("/metrics", get(handle_metrics))
1809 .layer(Extension(server))
1810}
1811
1812pub async fn handle_websocket_request(
1813 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1814 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1815 Extension(server): Extension<Arc<Server>>,
1816 Extension(user): Extension<User>,
1817 ws: WebSocketUpgrade,
1818) -> axum::response::Response {
1819 if protocol_version != rpc::PROTOCOL_VERSION {
1820 return (
1821 StatusCode::UPGRADE_REQUIRED,
1822 "client must be upgraded".to_string(),
1823 )
1824 .into_response();
1825 }
1826 let socket_address = socket_address.to_string();
1827 ws.on_upgrade(move |socket| {
1828 use util::ResultExt;
1829 let socket = socket
1830 .map_ok(to_tungstenite_message)
1831 .err_into()
1832 .with(|message| async move { Ok(to_axum_message(message)) });
1833 let connection = Connection::new(Box::pin(socket));
1834 async move {
1835 server
1836 .handle_connection(connection, socket_address, user, None, RealExecutor)
1837 .await
1838 .log_err();
1839 }
1840 })
1841}
1842
1843pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1844 // We call `store_mut` here for its side effects of updating metrics.
1845 let metrics = server.store().await.metrics();
1846 METRIC_CONNECTIONS.set(metrics.connections as _);
1847 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1848 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1849 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1850
1851 let encoder = prometheus::TextEncoder::new();
1852 let metric_families = prometheus::gather();
1853 match encoder.encode_to_string(&metric_families) {
1854 Ok(string) => (StatusCode::OK, string).into_response(),
1855 Err(error) => (
1856 StatusCode::INTERNAL_SERVER_ERROR,
1857 format!("failed to encode metrics {:?}", error),
1858 )
1859 .into_response(),
1860 }
1861}
1862
1863fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1864 match message {
1865 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1866 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1867 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1868 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1869 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1870 code: frame.code.into(),
1871 reason: frame.reason,
1872 })),
1873 }
1874}
1875
1876fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1877 match message {
1878 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1879 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1880 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1881 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1882 AxumMessage::Close(frame) => {
1883 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1884 code: frame.code.into(),
1885 reason: frame.reason,
1886 }))
1887 }
1888 }
1889}
1890
1891pub trait ResultExt {
1892 type Ok;
1893
1894 fn trace_err(self) -> Option<Self::Ok>;
1895}
1896
1897impl<T, E> ResultExt for Result<T, E>
1898where
1899 E: std::fmt::Debug,
1900{
1901 type Ok = T;
1902
1903 fn trace_err(self) -> Option<T> {
1904 match self {
1905 Ok(value) => Some(value),
1906 Err(error) => {
1907 tracing::error!("{:?}", error);
1908 None
1909 }
1910 }
1911 }
1912}