1mod store;
2
3use crate::{
4 auth,
5 db::{self, ChannelId, MessageId, ProjectId, User, UserId},
6 AppState, Result,
7};
8use anyhow::anyhow;
9use async_tungstenite::tungstenite::{
10 protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
11};
12use axum::{
13 body::Body,
14 extract::{
15 ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
16 ConnectInfo, WebSocketUpgrade,
17 },
18 headers::{Header, HeaderName},
19 http::StatusCode,
20 middleware,
21 response::IntoResponse,
22 routing::get,
23 Extension, Router, TypedHeader,
24};
25use collections::HashMap;
26use futures::{
27 channel::mpsc,
28 future::{self, BoxFuture},
29 stream::FuturesUnordered,
30 FutureExt, SinkExt, StreamExt, TryStreamExt,
31};
32use lazy_static::lazy_static;
33use prometheus::{register_int_gauge, IntGauge};
34use rpc::{
35 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
36 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
37};
38use serde::{Serialize, Serializer};
39use std::{
40 any::TypeId,
41 future::Future,
42 marker::PhantomData,
43 net::SocketAddr,
44 ops::{Deref, DerefMut},
45 rc::Rc,
46 sync::{
47 atomic::{AtomicBool, Ordering::SeqCst},
48 Arc,
49 },
50 time::Duration,
51};
52use time::OffsetDateTime;
53use tokio::{
54 sync::{Mutex, MutexGuard},
55 time::Sleep,
56};
57use tower::ServiceBuilder;
58use tracing::{info_span, instrument, Instrument};
59
60pub use store::{Store, Worktree};
61
62lazy_static! {
63 static ref METRIC_CONNECTIONS: IntGauge =
64 register_int_gauge!("connections", "number of connections").unwrap();
65 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
66 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
67 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
68 register_int_gauge!("active_projects", "number of active projects").unwrap();
69 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
70 "shared_projects",
71 "number of open projects with one or more guests"
72 )
73 .unwrap();
74}
75
76type MessageHandler =
77 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
78
79struct Response<R> {
80 server: Arc<Server>,
81 receipt: Receipt<R>,
82 responded: Arc<AtomicBool>,
83}
84
85impl<R: RequestMessage> Response<R> {
86 fn send(self, payload: R::Response) -> Result<()> {
87 self.responded.store(true, SeqCst);
88 self.server.peer.respond(self.receipt, payload)?;
89 Ok(())
90 }
91}
92
93pub struct Server {
94 peer: Arc<Peer>,
95 pub(crate) store: Mutex<Store>,
96 app_state: Arc<AppState>,
97 handlers: HashMap<TypeId, MessageHandler>,
98 notifications: Option<mpsc::UnboundedSender<()>>,
99}
100
101pub trait Executor: Send + Clone {
102 type Sleep: Send + Future;
103 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
104 fn sleep(&self, duration: Duration) -> Self::Sleep;
105}
106
107#[derive(Clone)]
108pub struct RealExecutor;
109
110const MESSAGE_COUNT_PER_PAGE: usize = 100;
111const MAX_MESSAGE_LEN: usize = 1024;
112
113pub(crate) struct StoreGuard<'a> {
114 guard: MutexGuard<'a, Store>,
115 _not_send: PhantomData<Rc<()>>,
116}
117
118#[derive(Serialize)]
119pub struct ServerSnapshot<'a> {
120 peer: &'a Peer,
121 #[serde(serialize_with = "serialize_deref")]
122 store: StoreGuard<'a>,
123}
124
125pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
126where
127 S: Serializer,
128 T: Deref<Target = U>,
129 U: Serialize,
130{
131 Serialize::serialize(value.deref(), serializer)
132}
133
134impl Server {
135 pub fn new(
136 app_state: Arc<AppState>,
137 notifications: Option<mpsc::UnboundedSender<()>>,
138 ) -> Arc<Self> {
139 let mut server = Self {
140 peer: Peer::new(),
141 app_state,
142 store: Default::default(),
143 handlers: Default::default(),
144 notifications,
145 };
146
147 server
148 .add_request_handler(Server::ping)
149 .add_request_handler(Server::create_room)
150 .add_request_handler(Server::join_room)
151 .add_message_handler(Server::leave_room)
152 .add_request_handler(Server::call)
153 .add_request_handler(Server::cancel_call)
154 .add_message_handler(Server::decline_call)
155 .add_request_handler(Server::update_participant_location)
156 .add_request_handler(Server::share_project)
157 .add_message_handler(Server::unshare_project)
158 .add_request_handler(Server::join_project)
159 .add_message_handler(Server::leave_project)
160 .add_message_handler(Server::update_project)
161 .add_message_handler(Server::register_project_activity)
162 .add_request_handler(Server::update_worktree)
163 .add_message_handler(Server::update_worktree_extensions)
164 .add_message_handler(Server::start_language_server)
165 .add_message_handler(Server::update_language_server)
166 .add_message_handler(Server::update_diagnostic_summary)
167 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
168 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
170 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
171 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
172 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
173 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
176 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
177 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
178 .add_request_handler(
179 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
180 )
181 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
182 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
183 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
184 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
185 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
187 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
190 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
191 .add_message_handler(Server::create_buffer_for_peer)
192 .add_request_handler(Server::update_buffer)
193 .add_message_handler(Server::update_buffer_file)
194 .add_message_handler(Server::buffer_reloaded)
195 .add_message_handler(Server::buffer_saved)
196 .add_request_handler(Server::save_buffer)
197 .add_request_handler(Server::get_channels)
198 .add_request_handler(Server::get_users)
199 .add_request_handler(Server::fuzzy_search_users)
200 .add_request_handler(Server::request_contact)
201 .add_request_handler(Server::remove_contact)
202 .add_request_handler(Server::respond_to_contact_request)
203 .add_request_handler(Server::join_channel)
204 .add_message_handler(Server::leave_channel)
205 .add_request_handler(Server::send_channel_message)
206 .add_request_handler(Server::follow)
207 .add_message_handler(Server::unfollow)
208 .add_message_handler(Server::update_followers)
209 .add_request_handler(Server::get_channel_messages)
210 .add_message_handler(Server::update_diff_base)
211 .add_request_handler(Server::get_private_user_info);
212
213 Arc::new(server)
214 }
215
216 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
217 where
218 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
219 Fut: 'static + Send + Future<Output = Result<()>>,
220 M: EnvelopedMessage,
221 {
222 let prev_handler = self.handlers.insert(
223 TypeId::of::<M>(),
224 Box::new(move |server, envelope| {
225 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
226 let span = info_span!(
227 "handle message",
228 payload_type = envelope.payload_type_name()
229 );
230 span.in_scope(|| {
231 tracing::info!(
232 payload_type = envelope.payload_type_name(),
233 "message received"
234 );
235 });
236 let future = (handler)(server, *envelope);
237 async move {
238 if let Err(error) = future.await {
239 tracing::error!(%error, "error handling message");
240 }
241 }
242 .instrument(span)
243 .boxed()
244 }),
245 );
246 if prev_handler.is_some() {
247 panic!("registered a handler for the same message twice");
248 }
249 self
250 }
251
252 /// Handle a request while holding a lock to the store. This is useful when we're registering
253 /// a connection but we want to respond on the connection before anybody else can send on it.
254 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
255 where
256 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
257 Fut: Send + Future<Output = Result<()>>,
258 M: RequestMessage,
259 {
260 let handler = Arc::new(handler);
261 self.add_message_handler(move |server, envelope| {
262 let receipt = envelope.receipt();
263 let handler = handler.clone();
264 async move {
265 let responded = Arc::new(AtomicBool::default());
266 let response = Response {
267 server: server.clone(),
268 responded: responded.clone(),
269 receipt: envelope.receipt(),
270 };
271 match (handler)(server.clone(), envelope, response).await {
272 Ok(()) => {
273 if responded.load(std::sync::atomic::Ordering::SeqCst) {
274 Ok(())
275 } else {
276 Err(anyhow!("handler did not send a response"))?
277 }
278 }
279 Err(error) => {
280 server.peer.respond_with_error(
281 receipt,
282 proto::Error {
283 message: error.to_string(),
284 },
285 )?;
286 Err(error)
287 }
288 }
289 }
290 })
291 }
292
293 /// Start a long lived task that records which users are active in which projects.
294 pub fn start_recording_project_activity<E: 'static + Executor>(
295 self: &Arc<Self>,
296 interval: Duration,
297 executor: E,
298 ) {
299 executor.spawn_detached({
300 let this = Arc::downgrade(self);
301 let executor = executor.clone();
302 async move {
303 let mut period_start = OffsetDateTime::now_utc();
304 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
305 loop {
306 let sleep = executor.sleep(interval);
307 sleep.await;
308 let this = if let Some(this) = this.upgrade() {
309 this
310 } else {
311 break;
312 };
313
314 active_projects.clear();
315 active_projects.extend(this.store().await.projects().flat_map(
316 |(project_id, project)| {
317 project.guests.values().chain([&project.host]).filter_map(
318 |collaborator| {
319 if !collaborator.admin
320 && collaborator
321 .last_activity
322 .map_or(false, |activity| activity > period_start)
323 {
324 Some((collaborator.user_id, *project_id))
325 } else {
326 None
327 }
328 },
329 )
330 },
331 ));
332
333 let period_end = OffsetDateTime::now_utc();
334 this.app_state
335 .db
336 .record_user_activity(period_start..period_end, &active_projects)
337 .await
338 .trace_err();
339 period_start = period_end;
340 }
341 }
342 });
343 }
344
345 pub fn handle_connection<E: Executor>(
346 self: &Arc<Self>,
347 connection: Connection,
348 address: String,
349 user: User,
350 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
351 executor: E,
352 ) -> impl Future<Output = Result<()>> {
353 let mut this = self.clone();
354 let user_id = user.id;
355 let login = user.github_login;
356 let span = info_span!("handle connection", %user_id, %login, %address);
357 async move {
358 let (connection_id, handle_io, mut incoming_rx) = this
359 .peer
360 .add_connection(connection, {
361 let executor = executor.clone();
362 move |duration| {
363 let timer = executor.sleep(duration);
364 async move {
365 timer.await;
366 }
367 }
368 })
369 .await;
370
371 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
372
373 if let Some(send_connection_id) = send_connection_id.as_mut() {
374 let _ = send_connection_id.send(connection_id).await;
375 }
376
377 if !user.connected_once {
378 this.peer.send(connection_id, proto::ShowContacts {})?;
379 this.app_state.db.set_user_connected_once(user_id, true).await?;
380 }
381
382 let (contacts, invite_code) = future::try_join(
383 this.app_state.db.get_contacts(user_id),
384 this.app_state.db.get_invite_code_for_user(user_id)
385 ).await?;
386
387 {
388 let mut store = this.store().await;
389 let incoming_call = store.add_connection(connection_id, user_id, user.admin);
390 if let Some(incoming_call) = incoming_call {
391 this.peer.send(connection_id, incoming_call)?;
392 }
393
394 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
395
396 if let Some((code, count)) = invite_code {
397 this.peer.send(connection_id, proto::UpdateInviteInfo {
398 url: format!("{}{}", this.app_state.invite_link_prefix, code),
399 count,
400 })?;
401 }
402 }
403 this.update_user_contacts(user_id).await?;
404
405 let handle_io = handle_io.fuse();
406 futures::pin_mut!(handle_io);
407
408 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
409 // This prevents deadlocks when e.g., client A performs a request to client B and
410 // client B performs a request to client A. If both clients stop processing further
411 // messages until their respective request completes, they won't have a chance to
412 // respond to the other client's request and cause a deadlock.
413 //
414 // This arrangement ensures we will attempt to process earlier messages first, but fall
415 // back to processing messages arrived later in the spirit of making progress.
416 let mut foreground_message_handlers = FuturesUnordered::new();
417 loop {
418 let next_message = incoming_rx.next().fuse();
419 futures::pin_mut!(next_message);
420 futures::select_biased! {
421 result = handle_io => {
422 if let Err(error) = result {
423 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
424 }
425 break;
426 }
427 _ = foreground_message_handlers.next() => {}
428 message = next_message => {
429 if let Some(message) = message {
430 let type_name = message.payload_type_name();
431 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
432 let span_enter = span.enter();
433 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
434 let notifications = this.notifications.clone();
435 let is_background = message.is_background();
436 let handle_message = (handler)(this.clone(), message);
437
438 drop(span_enter);
439 let handle_message = async move {
440 handle_message.await;
441 if let Some(mut notifications) = notifications {
442 let _ = notifications.send(()).await;
443 }
444 }.instrument(span);
445
446 if is_background {
447 executor.spawn_detached(handle_message);
448 } else {
449 foreground_message_handlers.push(handle_message);
450 }
451 } else {
452 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
453 }
454 } else {
455 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
456 break;
457 }
458 }
459 }
460 }
461
462 drop(foreground_message_handlers);
463 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
464 if let Err(error) = this.sign_out(connection_id).await {
465 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
466 }
467
468 Ok(())
469 }.instrument(span)
470 }
471
472 #[instrument(skip(self), err)]
473 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
474 self.peer.disconnect(connection_id);
475
476 let mut projects_to_unshare = Vec::new();
477 let removed_user_id;
478 {
479 let mut store = self.store().await;
480 let removed_connection = store.remove_connection(connection_id)?;
481
482 for (project_id, project) in removed_connection.hosted_projects {
483 projects_to_unshare.push(project_id);
484 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
485 self.peer.send(
486 conn_id,
487 proto::UnshareProject {
488 project_id: project_id.to_proto(),
489 },
490 )
491 });
492 }
493
494 for project_id in removed_connection.guest_project_ids {
495 if let Some(project) = store.project(project_id).trace_err() {
496 broadcast(connection_id, project.connection_ids(), |conn_id| {
497 self.peer.send(
498 conn_id,
499 proto::RemoveProjectCollaborator {
500 project_id: project_id.to_proto(),
501 peer_id: connection_id.0,
502 },
503 )
504 });
505 }
506 }
507
508 if let Some(room) = removed_connection
509 .room_id
510 .and_then(|room_id| store.room(room_id))
511 {
512 self.room_updated(room);
513 }
514
515 removed_user_id = removed_connection.user_id;
516 };
517
518 self.update_user_contacts(removed_user_id).await.trace_err();
519
520 for project_id in projects_to_unshare {
521 self.app_state
522 .db
523 .unregister_project(project_id)
524 .await
525 .trace_err();
526 }
527
528 Ok(())
529 }
530
531 pub async fn invite_code_redeemed(
532 self: &Arc<Self>,
533 inviter_id: UserId,
534 invitee_id: UserId,
535 ) -> Result<()> {
536 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
537 if let Some(code) = &user.invite_code {
538 let store = self.store().await;
539 let invitee_contact = store.contact_for_user(invitee_id, true);
540 for connection_id in store.connection_ids_for_user(inviter_id) {
541 self.peer.send(
542 connection_id,
543 proto::UpdateContacts {
544 contacts: vec![invitee_contact.clone()],
545 ..Default::default()
546 },
547 )?;
548 self.peer.send(
549 connection_id,
550 proto::UpdateInviteInfo {
551 url: format!("{}{}", self.app_state.invite_link_prefix, &code),
552 count: user.invite_count as u32,
553 },
554 )?;
555 }
556 }
557 }
558 Ok(())
559 }
560
561 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
562 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
563 if let Some(invite_code) = &user.invite_code {
564 let store = self.store().await;
565 for connection_id in store.connection_ids_for_user(user_id) {
566 self.peer.send(
567 connection_id,
568 proto::UpdateInviteInfo {
569 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
570 count: user.invite_count as u32,
571 },
572 )?;
573 }
574 }
575 }
576 Ok(())
577 }
578
579 async fn ping(
580 self: Arc<Server>,
581 _: TypedEnvelope<proto::Ping>,
582 response: Response<proto::Ping>,
583 ) -> Result<()> {
584 response.send(proto::Ack {})?;
585 Ok(())
586 }
587
588 async fn create_room(
589 self: Arc<Server>,
590 request: TypedEnvelope<proto::CreateRoom>,
591 response: Response<proto::CreateRoom>,
592 ) -> Result<()> {
593 let user_id;
594 let room_id;
595 {
596 let mut store = self.store().await;
597 user_id = store.user_id_for_connection(request.sender_id)?;
598 room_id = store.create_room(request.sender_id)?;
599 }
600 response.send(proto::CreateRoomResponse { id: room_id })?;
601 self.update_user_contacts(user_id).await?;
602 Ok(())
603 }
604
605 async fn join_room(
606 self: Arc<Server>,
607 request: TypedEnvelope<proto::JoinRoom>,
608 response: Response<proto::JoinRoom>,
609 ) -> Result<()> {
610 let user_id;
611 {
612 let mut store = self.store().await;
613 user_id = store.user_id_for_connection(request.sender_id)?;
614 let (room, recipient_connection_ids) =
615 store.join_room(request.payload.id, request.sender_id)?;
616 for recipient_id in recipient_connection_ids {
617 self.peer
618 .send(recipient_id, proto::CallCanceled {})
619 .trace_err();
620 }
621 response.send(proto::JoinRoomResponse {
622 room: Some(room.clone()),
623 })?;
624 self.room_updated(room);
625 }
626 self.update_user_contacts(user_id).await?;
627 Ok(())
628 }
629
630 async fn leave_room(self: Arc<Server>, message: TypedEnvelope<proto::LeaveRoom>) -> Result<()> {
631 let user_id;
632 {
633 let mut store = self.store().await;
634 user_id = store.user_id_for_connection(message.sender_id)?;
635 let left_room = store.leave_room(message.payload.id, message.sender_id)?;
636
637 for project in left_room.unshared_projects {
638 for connection_id in project.connection_ids() {
639 self.peer.send(
640 connection_id,
641 proto::UnshareProject {
642 project_id: project.id.to_proto(),
643 },
644 )?;
645 }
646 }
647
648 for project in left_room.left_projects {
649 if project.remove_collaborator {
650 for connection_id in project.connection_ids {
651 self.peer.send(
652 connection_id,
653 proto::RemoveProjectCollaborator {
654 project_id: project.id.to_proto(),
655 peer_id: message.sender_id.0,
656 },
657 )?;
658 }
659
660 self.peer.send(
661 message.sender_id,
662 proto::UnshareProject {
663 project_id: project.id.to_proto(),
664 },
665 )?;
666 }
667 }
668
669 if let Some(room) = left_room.room {
670 self.room_updated(room);
671 }
672 }
673 self.update_user_contacts(user_id).await?;
674
675 Ok(())
676 }
677
678 async fn call(
679 self: Arc<Server>,
680 request: TypedEnvelope<proto::Call>,
681 response: Response<proto::Call>,
682 ) -> Result<()> {
683 let caller_user_id = self
684 .store()
685 .await
686 .user_id_for_connection(request.sender_id)?;
687 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
688 let initial_project_id = request
689 .payload
690 .initial_project_id
691 .map(ProjectId::from_proto);
692 if !self
693 .app_state
694 .db
695 .has_contact(caller_user_id, recipient_user_id)
696 .await?
697 {
698 return Err(anyhow!("cannot call a user who isn't a contact"))?;
699 }
700
701 let room_id = request.payload.room_id;
702 let mut calls = {
703 let mut store = self.store().await;
704 let (room, recipient_connection_ids, incoming_call) = store.call(
705 room_id,
706 recipient_user_id,
707 initial_project_id,
708 request.sender_id,
709 )?;
710 self.room_updated(room);
711 recipient_connection_ids
712 .into_iter()
713 .map(|recipient_connection_id| {
714 self.peer
715 .request(recipient_connection_id, incoming_call.clone())
716 })
717 .collect::<FuturesUnordered<_>>()
718 };
719 self.update_user_contacts(recipient_user_id).await?;
720
721 while let Some(call_response) = calls.next().await {
722 match call_response.as_ref() {
723 Ok(_) => {
724 response.send(proto::Ack {})?;
725 return Ok(());
726 }
727 Err(_) => {
728 call_response.trace_err();
729 }
730 }
731 }
732
733 {
734 let mut store = self.store().await;
735 let room = store.call_failed(room_id, recipient_user_id)?;
736 self.room_updated(&room);
737 }
738 self.update_user_contacts(recipient_user_id).await?;
739
740 Err(anyhow!("failed to ring call recipient"))?
741 }
742
743 async fn cancel_call(
744 self: Arc<Server>,
745 request: TypedEnvelope<proto::CancelCall>,
746 response: Response<proto::CancelCall>,
747 ) -> Result<()> {
748 let recipient_user_id = UserId::from_proto(request.payload.recipient_user_id);
749 {
750 let mut store = self.store().await;
751 let (room, recipient_connection_ids) = store.cancel_call(
752 request.payload.room_id,
753 recipient_user_id,
754 request.sender_id,
755 )?;
756 for recipient_id in recipient_connection_ids {
757 self.peer
758 .send(recipient_id, proto::CallCanceled {})
759 .trace_err();
760 }
761 self.room_updated(room);
762 response.send(proto::Ack {})?;
763 }
764 self.update_user_contacts(recipient_user_id).await?;
765 Ok(())
766 }
767
768 async fn decline_call(
769 self: Arc<Server>,
770 message: TypedEnvelope<proto::DeclineCall>,
771 ) -> Result<()> {
772 let recipient_user_id;
773 {
774 let mut store = self.store().await;
775 recipient_user_id = store.user_id_for_connection(message.sender_id)?;
776 let (room, recipient_connection_ids) =
777 store.decline_call(message.payload.room_id, message.sender_id)?;
778 for recipient_id in recipient_connection_ids {
779 self.peer
780 .send(recipient_id, proto::CallCanceled {})
781 .trace_err();
782 }
783 self.room_updated(room);
784 }
785 self.update_user_contacts(recipient_user_id).await?;
786 Ok(())
787 }
788
789 async fn update_participant_location(
790 self: Arc<Server>,
791 request: TypedEnvelope<proto::UpdateParticipantLocation>,
792 response: Response<proto::UpdateParticipantLocation>,
793 ) -> Result<()> {
794 let room_id = request.payload.room_id;
795 let location = request
796 .payload
797 .location
798 .ok_or_else(|| anyhow!("invalid location"))?;
799 let mut store = self.store().await;
800 let room = store.update_participant_location(room_id, location, request.sender_id)?;
801 self.room_updated(room);
802 response.send(proto::Ack {})?;
803 Ok(())
804 }
805
806 fn room_updated(&self, room: &proto::Room) {
807 for participant in &room.participants {
808 self.peer
809 .send(
810 ConnectionId(participant.peer_id),
811 proto::RoomUpdated {
812 room: Some(room.clone()),
813 },
814 )
815 .trace_err();
816 }
817 }
818
819 async fn share_project(
820 self: Arc<Server>,
821 request: TypedEnvelope<proto::ShareProject>,
822 response: Response<proto::ShareProject>,
823 ) -> Result<()> {
824 let user_id = self
825 .store()
826 .await
827 .user_id_for_connection(request.sender_id)?;
828 let project_id = self.app_state.db.register_project(user_id).await?;
829 let mut store = self.store().await;
830 let room = store.share_project(request.payload.room_id, project_id, request.sender_id)?;
831 response.send(proto::ShareProjectResponse {
832 project_id: project_id.to_proto(),
833 })?;
834 self.room_updated(room);
835
836 Ok(())
837 }
838
839 async fn unshare_project(
840 self: Arc<Server>,
841 message: TypedEnvelope<proto::UnshareProject>,
842 ) -> Result<()> {
843 let project_id = ProjectId::from_proto(message.payload.project_id);
844 let mut store = self.store().await;
845 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
846 broadcast(
847 message.sender_id,
848 project.guest_connection_ids(),
849 |conn_id| self.peer.send(conn_id, message.payload.clone()),
850 );
851 self.room_updated(room);
852
853 Ok(())
854 }
855
856 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
857 let contacts = self.app_state.db.get_contacts(user_id).await?;
858 let store = self.store().await;
859 let updated_contact = store.contact_for_user(user_id, false);
860 for contact in contacts {
861 if let db::Contact::Accepted {
862 user_id: contact_user_id,
863 ..
864 } = contact
865 {
866 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
867 self.peer
868 .send(
869 contact_conn_id,
870 proto::UpdateContacts {
871 contacts: vec![updated_contact.clone()],
872 remove_contacts: Default::default(),
873 incoming_requests: Default::default(),
874 remove_incoming_requests: Default::default(),
875 outgoing_requests: Default::default(),
876 remove_outgoing_requests: Default::default(),
877 },
878 )
879 .trace_err();
880 }
881 }
882 }
883 Ok(())
884 }
885
886 async fn join_project(
887 self: Arc<Server>,
888 request: TypedEnvelope<proto::JoinProject>,
889 response: Response<proto::JoinProject>,
890 ) -> Result<()> {
891 let project_id = ProjectId::from_proto(request.payload.project_id);
892
893 let host_user_id;
894 let guest_user_id;
895 let host_connection_id;
896 {
897 let state = self.store().await;
898 let project = state.project(project_id)?;
899 host_user_id = project.host.user_id;
900 host_connection_id = project.host_connection_id;
901 guest_user_id = state.user_id_for_connection(request.sender_id)?;
902 };
903
904 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
905
906 let mut store = self.store().await;
907 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
908 let peer_count = project.guests.len();
909 let mut collaborators = Vec::with_capacity(peer_count);
910 collaborators.push(proto::Collaborator {
911 peer_id: project.host_connection_id.0,
912 replica_id: 0,
913 user_id: project.host.user_id.to_proto(),
914 });
915 let worktrees = project
916 .worktrees
917 .iter()
918 .map(|(id, worktree)| proto::WorktreeMetadata {
919 id: *id,
920 root_name: worktree.root_name.clone(),
921 visible: worktree.visible,
922 })
923 .collect::<Vec<_>>();
924
925 // Add all guests other than the requesting user's own connections as collaborators
926 for (guest_conn_id, guest) in &project.guests {
927 if request.sender_id != *guest_conn_id {
928 collaborators.push(proto::Collaborator {
929 peer_id: guest_conn_id.0,
930 replica_id: guest.replica_id as u32,
931 user_id: guest.user_id.to_proto(),
932 });
933 }
934 }
935
936 for conn_id in project.connection_ids() {
937 if conn_id != request.sender_id {
938 self.peer.send(
939 conn_id,
940 proto::AddProjectCollaborator {
941 project_id: project_id.to_proto(),
942 collaborator: Some(proto::Collaborator {
943 peer_id: request.sender_id.0,
944 replica_id: replica_id as u32,
945 user_id: guest_user_id.to_proto(),
946 }),
947 },
948 )?;
949 }
950 }
951
952 // First, we send the metadata associated with each worktree.
953 response.send(proto::JoinProjectResponse {
954 worktrees: worktrees.clone(),
955 replica_id: replica_id as u32,
956 collaborators: collaborators.clone(),
957 language_servers: project.language_servers.clone(),
958 })?;
959
960 for (worktree_id, worktree) in &project.worktrees {
961 #[cfg(any(test, feature = "test-support"))]
962 const MAX_CHUNK_SIZE: usize = 2;
963 #[cfg(not(any(test, feature = "test-support")))]
964 const MAX_CHUNK_SIZE: usize = 256;
965
966 // Stream this worktree's entries.
967 let message = proto::UpdateWorktree {
968 project_id: project_id.to_proto(),
969 worktree_id: *worktree_id,
970 root_name: worktree.root_name.clone(),
971 updated_entries: worktree.entries.values().cloned().collect(),
972 removed_entries: Default::default(),
973 scan_id: worktree.scan_id,
974 is_last_update: worktree.is_complete,
975 };
976 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
977 self.peer.send(request.sender_id, update.clone())?;
978 }
979
980 // Stream this worktree's diagnostics.
981 for summary in worktree.diagnostic_summaries.values() {
982 self.peer.send(
983 request.sender_id,
984 proto::UpdateDiagnosticSummary {
985 project_id: project_id.to_proto(),
986 worktree_id: *worktree_id,
987 summary: Some(summary.clone()),
988 },
989 )?;
990 }
991 }
992
993 Ok(())
994 }
995
996 async fn leave_project(
997 self: Arc<Server>,
998 request: TypedEnvelope<proto::LeaveProject>,
999 ) -> Result<()> {
1000 let sender_id = request.sender_id;
1001 let project_id = ProjectId::from_proto(request.payload.project_id);
1002 let project;
1003 {
1004 let mut store = self.store().await;
1005 project = store.leave_project(project_id, sender_id)?;
1006 tracing::info!(
1007 %project_id,
1008 host_user_id = %project.host_user_id,
1009 host_connection_id = %project.host_connection_id,
1010 "leave project"
1011 );
1012
1013 if project.remove_collaborator {
1014 broadcast(sender_id, project.connection_ids, |conn_id| {
1015 self.peer.send(
1016 conn_id,
1017 proto::RemoveProjectCollaborator {
1018 project_id: project_id.to_proto(),
1019 peer_id: sender_id.0,
1020 },
1021 )
1022 });
1023 }
1024 }
1025
1026 Ok(())
1027 }
1028
1029 async fn update_project(
1030 self: Arc<Server>,
1031 request: TypedEnvelope<proto::UpdateProject>,
1032 ) -> Result<()> {
1033 let project_id = ProjectId::from_proto(request.payload.project_id);
1034 {
1035 let mut state = self.store().await;
1036 let guest_connection_ids = state
1037 .read_project(project_id, request.sender_id)?
1038 .guest_connection_ids();
1039 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
1040 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1041 self.peer
1042 .forward_send(request.sender_id, connection_id, request.payload.clone())
1043 });
1044 };
1045
1046 Ok(())
1047 }
1048
1049 async fn register_project_activity(
1050 self: Arc<Server>,
1051 request: TypedEnvelope<proto::RegisterProjectActivity>,
1052 ) -> Result<()> {
1053 self.store().await.register_project_activity(
1054 ProjectId::from_proto(request.payload.project_id),
1055 request.sender_id,
1056 )?;
1057 Ok(())
1058 }
1059
1060 async fn update_worktree(
1061 self: Arc<Server>,
1062 request: TypedEnvelope<proto::UpdateWorktree>,
1063 response: Response<proto::UpdateWorktree>,
1064 ) -> Result<()> {
1065 let project_id = ProjectId::from_proto(request.payload.project_id);
1066 let worktree_id = request.payload.worktree_id;
1067 let connection_ids = self.store().await.update_worktree(
1068 request.sender_id,
1069 project_id,
1070 worktree_id,
1071 &request.payload.root_name,
1072 &request.payload.removed_entries,
1073 &request.payload.updated_entries,
1074 request.payload.scan_id,
1075 request.payload.is_last_update,
1076 )?;
1077
1078 broadcast(request.sender_id, connection_ids, |connection_id| {
1079 self.peer
1080 .forward_send(request.sender_id, connection_id, request.payload.clone())
1081 });
1082 response.send(proto::Ack {})?;
1083 Ok(())
1084 }
1085
1086 async fn update_worktree_extensions(
1087 self: Arc<Server>,
1088 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1089 ) -> Result<()> {
1090 let project_id = ProjectId::from_proto(request.payload.project_id);
1091 let worktree_id = request.payload.worktree_id;
1092 let extensions = request
1093 .payload
1094 .extensions
1095 .into_iter()
1096 .zip(request.payload.counts)
1097 .collect();
1098 self.app_state
1099 .db
1100 .update_worktree_extensions(project_id, worktree_id, extensions)
1101 .await?;
1102 Ok(())
1103 }
1104
1105 async fn update_diagnostic_summary(
1106 self: Arc<Server>,
1107 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1108 ) -> Result<()> {
1109 let summary = request
1110 .payload
1111 .summary
1112 .clone()
1113 .ok_or_else(|| anyhow!("invalid summary"))?;
1114 let receiver_ids = self.store().await.update_diagnostic_summary(
1115 ProjectId::from_proto(request.payload.project_id),
1116 request.payload.worktree_id,
1117 request.sender_id,
1118 summary,
1119 )?;
1120
1121 broadcast(request.sender_id, receiver_ids, |connection_id| {
1122 self.peer
1123 .forward_send(request.sender_id, connection_id, request.payload.clone())
1124 });
1125 Ok(())
1126 }
1127
1128 async fn start_language_server(
1129 self: Arc<Server>,
1130 request: TypedEnvelope<proto::StartLanguageServer>,
1131 ) -> Result<()> {
1132 let receiver_ids = self.store().await.start_language_server(
1133 ProjectId::from_proto(request.payload.project_id),
1134 request.sender_id,
1135 request
1136 .payload
1137 .server
1138 .clone()
1139 .ok_or_else(|| anyhow!("invalid language server"))?,
1140 )?;
1141 broadcast(request.sender_id, receiver_ids, |connection_id| {
1142 self.peer
1143 .forward_send(request.sender_id, connection_id, request.payload.clone())
1144 });
1145 Ok(())
1146 }
1147
1148 async fn update_language_server(
1149 self: Arc<Server>,
1150 request: TypedEnvelope<proto::UpdateLanguageServer>,
1151 ) -> Result<()> {
1152 let receiver_ids = self.store().await.project_connection_ids(
1153 ProjectId::from_proto(request.payload.project_id),
1154 request.sender_id,
1155 )?;
1156 broadcast(request.sender_id, receiver_ids, |connection_id| {
1157 self.peer
1158 .forward_send(request.sender_id, connection_id, request.payload.clone())
1159 });
1160 Ok(())
1161 }
1162
1163 async fn forward_project_request<T>(
1164 self: Arc<Server>,
1165 request: TypedEnvelope<T>,
1166 response: Response<T>,
1167 ) -> Result<()>
1168 where
1169 T: EntityMessage + RequestMessage,
1170 {
1171 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1172 let host_connection_id = self
1173 .store()
1174 .await
1175 .read_project(project_id, request.sender_id)?
1176 .host_connection_id;
1177 let payload = self
1178 .peer
1179 .forward_request(request.sender_id, host_connection_id, request.payload)
1180 .await?;
1181
1182 // Ensure project still exists by the time we get the response from the host.
1183 self.store()
1184 .await
1185 .read_project(project_id, request.sender_id)?;
1186
1187 response.send(payload)?;
1188 Ok(())
1189 }
1190
1191 async fn save_buffer(
1192 self: Arc<Server>,
1193 request: TypedEnvelope<proto::SaveBuffer>,
1194 response: Response<proto::SaveBuffer>,
1195 ) -> Result<()> {
1196 let project_id = ProjectId::from_proto(request.payload.project_id);
1197 let host = self
1198 .store()
1199 .await
1200 .read_project(project_id, request.sender_id)?
1201 .host_connection_id;
1202 let response_payload = self
1203 .peer
1204 .forward_request(request.sender_id, host, request.payload.clone())
1205 .await?;
1206
1207 let mut guests = self
1208 .store()
1209 .await
1210 .read_project(project_id, request.sender_id)?
1211 .connection_ids();
1212 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1213 broadcast(host, guests, |conn_id| {
1214 self.peer
1215 .forward_send(host, conn_id, response_payload.clone())
1216 });
1217 response.send(response_payload)?;
1218 Ok(())
1219 }
1220
1221 async fn create_buffer_for_peer(
1222 self: Arc<Server>,
1223 request: TypedEnvelope<proto::CreateBufferForPeer>,
1224 ) -> Result<()> {
1225 self.peer.forward_send(
1226 request.sender_id,
1227 ConnectionId(request.payload.peer_id),
1228 request.payload,
1229 )?;
1230 Ok(())
1231 }
1232
1233 async fn update_buffer(
1234 self: Arc<Server>,
1235 request: TypedEnvelope<proto::UpdateBuffer>,
1236 response: Response<proto::UpdateBuffer>,
1237 ) -> Result<()> {
1238 let project_id = ProjectId::from_proto(request.payload.project_id);
1239 let receiver_ids = {
1240 let mut store = self.store().await;
1241 store.register_project_activity(project_id, request.sender_id)?;
1242 store.project_connection_ids(project_id, request.sender_id)?
1243 };
1244
1245 broadcast(request.sender_id, receiver_ids, |connection_id| {
1246 self.peer
1247 .forward_send(request.sender_id, connection_id, request.payload.clone())
1248 });
1249 response.send(proto::Ack {})?;
1250 Ok(())
1251 }
1252
1253 async fn update_buffer_file(
1254 self: Arc<Server>,
1255 request: TypedEnvelope<proto::UpdateBufferFile>,
1256 ) -> Result<()> {
1257 let receiver_ids = self.store().await.project_connection_ids(
1258 ProjectId::from_proto(request.payload.project_id),
1259 request.sender_id,
1260 )?;
1261 broadcast(request.sender_id, receiver_ids, |connection_id| {
1262 self.peer
1263 .forward_send(request.sender_id, connection_id, request.payload.clone())
1264 });
1265 Ok(())
1266 }
1267
1268 async fn buffer_reloaded(
1269 self: Arc<Server>,
1270 request: TypedEnvelope<proto::BufferReloaded>,
1271 ) -> Result<()> {
1272 let receiver_ids = self.store().await.project_connection_ids(
1273 ProjectId::from_proto(request.payload.project_id),
1274 request.sender_id,
1275 )?;
1276 broadcast(request.sender_id, receiver_ids, |connection_id| {
1277 self.peer
1278 .forward_send(request.sender_id, connection_id, request.payload.clone())
1279 });
1280 Ok(())
1281 }
1282
1283 async fn buffer_saved(
1284 self: Arc<Server>,
1285 request: TypedEnvelope<proto::BufferSaved>,
1286 ) -> Result<()> {
1287 let receiver_ids = self.store().await.project_connection_ids(
1288 ProjectId::from_proto(request.payload.project_id),
1289 request.sender_id,
1290 )?;
1291 broadcast(request.sender_id, receiver_ids, |connection_id| {
1292 self.peer
1293 .forward_send(request.sender_id, connection_id, request.payload.clone())
1294 });
1295 Ok(())
1296 }
1297
1298 async fn follow(
1299 self: Arc<Self>,
1300 request: TypedEnvelope<proto::Follow>,
1301 response: Response<proto::Follow>,
1302 ) -> Result<()> {
1303 let project_id = ProjectId::from_proto(request.payload.project_id);
1304 let leader_id = ConnectionId(request.payload.leader_id);
1305 let follower_id = request.sender_id;
1306 {
1307 let mut store = self.store().await;
1308 if !store
1309 .project_connection_ids(project_id, follower_id)?
1310 .contains(&leader_id)
1311 {
1312 Err(anyhow!("no such peer"))?;
1313 }
1314
1315 store.register_project_activity(project_id, follower_id)?;
1316 }
1317
1318 let mut response_payload = self
1319 .peer
1320 .forward_request(request.sender_id, leader_id, request.payload)
1321 .await?;
1322 response_payload
1323 .views
1324 .retain(|view| view.leader_id != Some(follower_id.0));
1325 response.send(response_payload)?;
1326 Ok(())
1327 }
1328
1329 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1330 let project_id = ProjectId::from_proto(request.payload.project_id);
1331 let leader_id = ConnectionId(request.payload.leader_id);
1332 let mut store = self.store().await;
1333 if !store
1334 .project_connection_ids(project_id, request.sender_id)?
1335 .contains(&leader_id)
1336 {
1337 Err(anyhow!("no such peer"))?;
1338 }
1339 store.register_project_activity(project_id, request.sender_id)?;
1340 self.peer
1341 .forward_send(request.sender_id, leader_id, request.payload)?;
1342 Ok(())
1343 }
1344
1345 async fn update_followers(
1346 self: Arc<Self>,
1347 request: TypedEnvelope<proto::UpdateFollowers>,
1348 ) -> Result<()> {
1349 let project_id = ProjectId::from_proto(request.payload.project_id);
1350 let mut store = self.store().await;
1351 store.register_project_activity(project_id, request.sender_id)?;
1352 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1353 let leader_id = request
1354 .payload
1355 .variant
1356 .as_ref()
1357 .and_then(|variant| match variant {
1358 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1359 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1360 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1361 });
1362 for follower_id in &request.payload.follower_ids {
1363 let follower_id = ConnectionId(*follower_id);
1364 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1365 self.peer
1366 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1367 }
1368 }
1369 Ok(())
1370 }
1371
1372 async fn get_channels(
1373 self: Arc<Server>,
1374 request: TypedEnvelope<proto::GetChannels>,
1375 response: Response<proto::GetChannels>,
1376 ) -> Result<()> {
1377 let user_id = self
1378 .store()
1379 .await
1380 .user_id_for_connection(request.sender_id)?;
1381 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1382 response.send(proto::GetChannelsResponse {
1383 channels: channels
1384 .into_iter()
1385 .map(|chan| proto::Channel {
1386 id: chan.id.to_proto(),
1387 name: chan.name,
1388 })
1389 .collect(),
1390 })?;
1391 Ok(())
1392 }
1393
1394 async fn get_users(
1395 self: Arc<Server>,
1396 request: TypedEnvelope<proto::GetUsers>,
1397 response: Response<proto::GetUsers>,
1398 ) -> Result<()> {
1399 let user_ids = request
1400 .payload
1401 .user_ids
1402 .into_iter()
1403 .map(UserId::from_proto)
1404 .collect();
1405 let users = self
1406 .app_state
1407 .db
1408 .get_users_by_ids(user_ids)
1409 .await?
1410 .into_iter()
1411 .map(|user| proto::User {
1412 id: user.id.to_proto(),
1413 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1414 github_login: user.github_login,
1415 })
1416 .collect();
1417 response.send(proto::UsersResponse { users })?;
1418 Ok(())
1419 }
1420
1421 async fn fuzzy_search_users(
1422 self: Arc<Server>,
1423 request: TypedEnvelope<proto::FuzzySearchUsers>,
1424 response: Response<proto::FuzzySearchUsers>,
1425 ) -> Result<()> {
1426 let user_id = self
1427 .store()
1428 .await
1429 .user_id_for_connection(request.sender_id)?;
1430 let query = request.payload.query;
1431 let db = &self.app_state.db;
1432 let users = match query.len() {
1433 0 => vec![],
1434 1 | 2 => db
1435 .get_user_by_github_account(&query, None)
1436 .await?
1437 .into_iter()
1438 .collect(),
1439 _ => db.fuzzy_search_users(&query, 10).await?,
1440 };
1441 let users = users
1442 .into_iter()
1443 .filter(|user| user.id != user_id)
1444 .map(|user| proto::User {
1445 id: user.id.to_proto(),
1446 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1447 github_login: user.github_login,
1448 })
1449 .collect();
1450 response.send(proto::UsersResponse { users })?;
1451 Ok(())
1452 }
1453
1454 async fn request_contact(
1455 self: Arc<Server>,
1456 request: TypedEnvelope<proto::RequestContact>,
1457 response: Response<proto::RequestContact>,
1458 ) -> Result<()> {
1459 let requester_id = self
1460 .store()
1461 .await
1462 .user_id_for_connection(request.sender_id)?;
1463 let responder_id = UserId::from_proto(request.payload.responder_id);
1464 if requester_id == responder_id {
1465 return Err(anyhow!("cannot add yourself as a contact"))?;
1466 }
1467
1468 self.app_state
1469 .db
1470 .send_contact_request(requester_id, responder_id)
1471 .await?;
1472
1473 // Update outgoing contact requests of requester
1474 let mut update = proto::UpdateContacts::default();
1475 update.outgoing_requests.push(responder_id.to_proto());
1476 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1477 self.peer.send(connection_id, update.clone())?;
1478 }
1479
1480 // Update incoming contact requests of responder
1481 let mut update = proto::UpdateContacts::default();
1482 update
1483 .incoming_requests
1484 .push(proto::IncomingContactRequest {
1485 requester_id: requester_id.to_proto(),
1486 should_notify: true,
1487 });
1488 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1489 self.peer.send(connection_id, update.clone())?;
1490 }
1491
1492 response.send(proto::Ack {})?;
1493 Ok(())
1494 }
1495
1496 async fn respond_to_contact_request(
1497 self: Arc<Server>,
1498 request: TypedEnvelope<proto::RespondToContactRequest>,
1499 response: Response<proto::RespondToContactRequest>,
1500 ) -> Result<()> {
1501 let responder_id = self
1502 .store()
1503 .await
1504 .user_id_for_connection(request.sender_id)?;
1505 let requester_id = UserId::from_proto(request.payload.requester_id);
1506 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1507 self.app_state
1508 .db
1509 .dismiss_contact_notification(responder_id, requester_id)
1510 .await?;
1511 } else {
1512 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1513 self.app_state
1514 .db
1515 .respond_to_contact_request(responder_id, requester_id, accept)
1516 .await?;
1517
1518 let store = self.store().await;
1519 // Update responder with new contact
1520 let mut update = proto::UpdateContacts::default();
1521 if accept {
1522 update
1523 .contacts
1524 .push(store.contact_for_user(requester_id, false));
1525 }
1526 update
1527 .remove_incoming_requests
1528 .push(requester_id.to_proto());
1529 for connection_id in store.connection_ids_for_user(responder_id) {
1530 self.peer.send(connection_id, update.clone())?;
1531 }
1532
1533 // Update requester with new contact
1534 let mut update = proto::UpdateContacts::default();
1535 if accept {
1536 update
1537 .contacts
1538 .push(store.contact_for_user(responder_id, true));
1539 }
1540 update
1541 .remove_outgoing_requests
1542 .push(responder_id.to_proto());
1543 for connection_id in store.connection_ids_for_user(requester_id) {
1544 self.peer.send(connection_id, update.clone())?;
1545 }
1546 }
1547
1548 response.send(proto::Ack {})?;
1549 Ok(())
1550 }
1551
1552 async fn remove_contact(
1553 self: Arc<Server>,
1554 request: TypedEnvelope<proto::RemoveContact>,
1555 response: Response<proto::RemoveContact>,
1556 ) -> Result<()> {
1557 let requester_id = self
1558 .store()
1559 .await
1560 .user_id_for_connection(request.sender_id)?;
1561 let responder_id = UserId::from_proto(request.payload.user_id);
1562 self.app_state
1563 .db
1564 .remove_contact(requester_id, responder_id)
1565 .await?;
1566
1567 // Update outgoing contact requests of requester
1568 let mut update = proto::UpdateContacts::default();
1569 update
1570 .remove_outgoing_requests
1571 .push(responder_id.to_proto());
1572 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1573 self.peer.send(connection_id, update.clone())?;
1574 }
1575
1576 // Update incoming contact requests of responder
1577 let mut update = proto::UpdateContacts::default();
1578 update
1579 .remove_incoming_requests
1580 .push(requester_id.to_proto());
1581 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1582 self.peer.send(connection_id, update.clone())?;
1583 }
1584
1585 response.send(proto::Ack {})?;
1586 Ok(())
1587 }
1588
1589 async fn join_channel(
1590 self: Arc<Self>,
1591 request: TypedEnvelope<proto::JoinChannel>,
1592 response: Response<proto::JoinChannel>,
1593 ) -> Result<()> {
1594 let user_id = self
1595 .store()
1596 .await
1597 .user_id_for_connection(request.sender_id)?;
1598 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1599 if !self
1600 .app_state
1601 .db
1602 .can_user_access_channel(user_id, channel_id)
1603 .await?
1604 {
1605 Err(anyhow!("access denied"))?;
1606 }
1607
1608 self.store()
1609 .await
1610 .join_channel(request.sender_id, channel_id);
1611 let messages = self
1612 .app_state
1613 .db
1614 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1615 .await?
1616 .into_iter()
1617 .map(|msg| proto::ChannelMessage {
1618 id: msg.id.to_proto(),
1619 body: msg.body,
1620 timestamp: msg.sent_at.unix_timestamp() as u64,
1621 sender_id: msg.sender_id.to_proto(),
1622 nonce: Some(msg.nonce.as_u128().into()),
1623 })
1624 .collect::<Vec<_>>();
1625 response.send(proto::JoinChannelResponse {
1626 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1627 messages,
1628 })?;
1629 Ok(())
1630 }
1631
1632 async fn leave_channel(
1633 self: Arc<Self>,
1634 request: TypedEnvelope<proto::LeaveChannel>,
1635 ) -> Result<()> {
1636 let user_id = self
1637 .store()
1638 .await
1639 .user_id_for_connection(request.sender_id)?;
1640 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1641 if !self
1642 .app_state
1643 .db
1644 .can_user_access_channel(user_id, channel_id)
1645 .await?
1646 {
1647 Err(anyhow!("access denied"))?;
1648 }
1649
1650 self.store()
1651 .await
1652 .leave_channel(request.sender_id, channel_id);
1653
1654 Ok(())
1655 }
1656
1657 async fn send_channel_message(
1658 self: Arc<Self>,
1659 request: TypedEnvelope<proto::SendChannelMessage>,
1660 response: Response<proto::SendChannelMessage>,
1661 ) -> Result<()> {
1662 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1663 let user_id;
1664 let connection_ids;
1665 {
1666 let state = self.store().await;
1667 user_id = state.user_id_for_connection(request.sender_id)?;
1668 connection_ids = state.channel_connection_ids(channel_id)?;
1669 }
1670
1671 // Validate the message body.
1672 let body = request.payload.body.trim().to_string();
1673 if body.len() > MAX_MESSAGE_LEN {
1674 return Err(anyhow!("message is too long"))?;
1675 }
1676 if body.is_empty() {
1677 return Err(anyhow!("message can't be blank"))?;
1678 }
1679
1680 let timestamp = OffsetDateTime::now_utc();
1681 let nonce = request
1682 .payload
1683 .nonce
1684 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1685
1686 let message_id = self
1687 .app_state
1688 .db
1689 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1690 .await?
1691 .to_proto();
1692 let message = proto::ChannelMessage {
1693 sender_id: user_id.to_proto(),
1694 id: message_id,
1695 body,
1696 timestamp: timestamp.unix_timestamp() as u64,
1697 nonce: Some(nonce),
1698 };
1699 broadcast(request.sender_id, connection_ids, |conn_id| {
1700 self.peer.send(
1701 conn_id,
1702 proto::ChannelMessageSent {
1703 channel_id: channel_id.to_proto(),
1704 message: Some(message.clone()),
1705 },
1706 )
1707 });
1708 response.send(proto::SendChannelMessageResponse {
1709 message: Some(message),
1710 })?;
1711 Ok(())
1712 }
1713
1714 async fn get_channel_messages(
1715 self: Arc<Self>,
1716 request: TypedEnvelope<proto::GetChannelMessages>,
1717 response: Response<proto::GetChannelMessages>,
1718 ) -> Result<()> {
1719 let user_id = self
1720 .store()
1721 .await
1722 .user_id_for_connection(request.sender_id)?;
1723 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1724 if !self
1725 .app_state
1726 .db
1727 .can_user_access_channel(user_id, channel_id)
1728 .await?
1729 {
1730 Err(anyhow!("access denied"))?;
1731 }
1732
1733 let messages = self
1734 .app_state
1735 .db
1736 .get_channel_messages(
1737 channel_id,
1738 MESSAGE_COUNT_PER_PAGE,
1739 Some(MessageId::from_proto(request.payload.before_message_id)),
1740 )
1741 .await?
1742 .into_iter()
1743 .map(|msg| proto::ChannelMessage {
1744 id: msg.id.to_proto(),
1745 body: msg.body,
1746 timestamp: msg.sent_at.unix_timestamp() as u64,
1747 sender_id: msg.sender_id.to_proto(),
1748 nonce: Some(msg.nonce.as_u128().into()),
1749 })
1750 .collect::<Vec<_>>();
1751 response.send(proto::GetChannelMessagesResponse {
1752 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1753 messages,
1754 })?;
1755 Ok(())
1756 }
1757
1758 async fn update_diff_base(
1759 self: Arc<Server>,
1760 request: TypedEnvelope<proto::UpdateDiffBase>,
1761 ) -> Result<()> {
1762 let receiver_ids = self.store().await.project_connection_ids(
1763 ProjectId::from_proto(request.payload.project_id),
1764 request.sender_id,
1765 )?;
1766 broadcast(request.sender_id, receiver_ids, |connection_id| {
1767 self.peer
1768 .forward_send(request.sender_id, connection_id, request.payload.clone())
1769 });
1770 Ok(())
1771 }
1772
1773 async fn get_private_user_info(
1774 self: Arc<Self>,
1775 request: TypedEnvelope<proto::GetPrivateUserInfo>,
1776 response: Response<proto::GetPrivateUserInfo>,
1777 ) -> Result<()> {
1778 let user_id = self
1779 .store()
1780 .await
1781 .user_id_for_connection(request.sender_id)?;
1782 let metrics_id = self.app_state.db.get_user_metrics_id(user_id).await?;
1783 let user = self
1784 .app_state
1785 .db
1786 .get_user_by_id(user_id)
1787 .await?
1788 .ok_or_else(|| anyhow!("user not found"))?;
1789 response.send(proto::GetPrivateUserInfoResponse {
1790 metrics_id,
1791 staff: user.admin,
1792 })?;
1793 Ok(())
1794 }
1795
1796 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1797 #[cfg(test)]
1798 tokio::task::yield_now().await;
1799 let guard = self.store.lock().await;
1800 #[cfg(test)]
1801 tokio::task::yield_now().await;
1802 StoreGuard {
1803 guard,
1804 _not_send: PhantomData,
1805 }
1806 }
1807
1808 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1809 ServerSnapshot {
1810 store: self.store().await,
1811 peer: &self.peer,
1812 }
1813 }
1814}
1815
1816impl<'a> Deref for StoreGuard<'a> {
1817 type Target = Store;
1818
1819 fn deref(&self) -> &Self::Target {
1820 &*self.guard
1821 }
1822}
1823
1824impl<'a> DerefMut for StoreGuard<'a> {
1825 fn deref_mut(&mut self) -> &mut Self::Target {
1826 &mut *self.guard
1827 }
1828}
1829
1830impl<'a> Drop for StoreGuard<'a> {
1831 fn drop(&mut self) {
1832 #[cfg(test)]
1833 self.check_invariants();
1834 }
1835}
1836
1837impl Executor for RealExecutor {
1838 type Sleep = Sleep;
1839
1840 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1841 tokio::task::spawn(future);
1842 }
1843
1844 fn sleep(&self, duration: Duration) -> Self::Sleep {
1845 tokio::time::sleep(duration)
1846 }
1847}
1848
1849fn broadcast<F>(
1850 sender_id: ConnectionId,
1851 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1852 mut f: F,
1853) where
1854 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1855{
1856 for receiver_id in receiver_ids {
1857 if receiver_id != sender_id {
1858 f(receiver_id).trace_err();
1859 }
1860 }
1861}
1862
1863lazy_static! {
1864 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1865}
1866
1867pub struct ProtocolVersion(u32);
1868
1869impl Header for ProtocolVersion {
1870 fn name() -> &'static HeaderName {
1871 &ZED_PROTOCOL_VERSION
1872 }
1873
1874 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1875 where
1876 Self: Sized,
1877 I: Iterator<Item = &'i axum::http::HeaderValue>,
1878 {
1879 let version = values
1880 .next()
1881 .ok_or_else(axum::headers::Error::invalid)?
1882 .to_str()
1883 .map_err(|_| axum::headers::Error::invalid())?
1884 .parse()
1885 .map_err(|_| axum::headers::Error::invalid())?;
1886 Ok(Self(version))
1887 }
1888
1889 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1890 values.extend([self.0.to_string().parse().unwrap()]);
1891 }
1892}
1893
1894pub fn routes(server: Arc<Server>) -> Router<Body> {
1895 Router::new()
1896 .route("/rpc", get(handle_websocket_request))
1897 .layer(
1898 ServiceBuilder::new()
1899 .layer(Extension(server.app_state.clone()))
1900 .layer(middleware::from_fn(auth::validate_header)),
1901 )
1902 .route("/metrics", get(handle_metrics))
1903 .layer(Extension(server))
1904}
1905
1906pub async fn handle_websocket_request(
1907 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1908 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1909 Extension(server): Extension<Arc<Server>>,
1910 Extension(user): Extension<User>,
1911 ws: WebSocketUpgrade,
1912) -> axum::response::Response {
1913 if protocol_version != rpc::PROTOCOL_VERSION {
1914 return (
1915 StatusCode::UPGRADE_REQUIRED,
1916 "client must be upgraded".to_string(),
1917 )
1918 .into_response();
1919 }
1920 let socket_address = socket_address.to_string();
1921 ws.on_upgrade(move |socket| {
1922 use util::ResultExt;
1923 let socket = socket
1924 .map_ok(to_tungstenite_message)
1925 .err_into()
1926 .with(|message| async move { Ok(to_axum_message(message)) });
1927 let connection = Connection::new(Box::pin(socket));
1928 async move {
1929 server
1930 .handle_connection(connection, socket_address, user, None, RealExecutor)
1931 .await
1932 .log_err();
1933 }
1934 })
1935}
1936
1937pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1938 // We call `store_mut` here for its side effects of updating metrics.
1939 let metrics = server.store().await.metrics();
1940 METRIC_CONNECTIONS.set(metrics.connections as _);
1941 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1942 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1943 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1944
1945 let encoder = prometheus::TextEncoder::new();
1946 let metric_families = prometheus::gather();
1947 match encoder.encode_to_string(&metric_families) {
1948 Ok(string) => (StatusCode::OK, string).into_response(),
1949 Err(error) => (
1950 StatusCode::INTERNAL_SERVER_ERROR,
1951 format!("failed to encode metrics {:?}", error),
1952 )
1953 .into_response(),
1954 }
1955}
1956
1957fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1958 match message {
1959 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1960 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1961 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1962 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1963 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1964 code: frame.code.into(),
1965 reason: frame.reason,
1966 })),
1967 }
1968}
1969
1970fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1971 match message {
1972 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1973 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1974 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1975 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1976 AxumMessage::Close(frame) => {
1977 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1978 code: frame.code.into(),
1979 reason: frame.reason,
1980 }))
1981 }
1982 }
1983}
1984
1985pub trait ResultExt {
1986 type Ok;
1987
1988 fn trace_err(self) -> Option<Self::Ok>;
1989}
1990
1991impl<T, E> ResultExt for Result<T, E>
1992where
1993 E: std::fmt::Debug,
1994{
1995 type Ok = T;
1996
1997 fn trace_err(self) -> Option<T> {
1998 match self {
1999 Ok(value) => Some(value),
2000 Err(error) => {
2001 tracing::error!("{:?}", error);
2002 None
2003 }
2004 }
2005 }
2006}