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