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(
831 request.payload.room_id,
832 project_id,
833 request.payload.worktrees,
834 request.sender_id,
835 )?;
836 response.send(proto::ShareProjectResponse {
837 project_id: project_id.to_proto(),
838 })?;
839 self.room_updated(room);
840
841 Ok(())
842 }
843
844 async fn unshare_project(
845 self: Arc<Server>,
846 message: TypedEnvelope<proto::UnshareProject>,
847 ) -> Result<()> {
848 let project_id = ProjectId::from_proto(message.payload.project_id);
849 let mut store = self.store().await;
850 let (room, project) = store.unshare_project(project_id, message.sender_id)?;
851 broadcast(
852 message.sender_id,
853 project.guest_connection_ids(),
854 |conn_id| self.peer.send(conn_id, message.payload.clone()),
855 );
856 self.room_updated(room);
857
858 Ok(())
859 }
860
861 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
862 let contacts = self.app_state.db.get_contacts(user_id).await?;
863 let store = self.store().await;
864 let updated_contact = store.contact_for_user(user_id, false);
865 for contact in contacts {
866 if let db::Contact::Accepted {
867 user_id: contact_user_id,
868 ..
869 } = contact
870 {
871 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
872 self.peer
873 .send(
874 contact_conn_id,
875 proto::UpdateContacts {
876 contacts: vec![updated_contact.clone()],
877 remove_contacts: Default::default(),
878 incoming_requests: Default::default(),
879 remove_incoming_requests: Default::default(),
880 outgoing_requests: Default::default(),
881 remove_outgoing_requests: Default::default(),
882 },
883 )
884 .trace_err();
885 }
886 }
887 }
888 Ok(())
889 }
890
891 async fn join_project(
892 self: Arc<Server>,
893 request: TypedEnvelope<proto::JoinProject>,
894 response: Response<proto::JoinProject>,
895 ) -> Result<()> {
896 let project_id = ProjectId::from_proto(request.payload.project_id);
897
898 let host_user_id;
899 let guest_user_id;
900 let host_connection_id;
901 {
902 let state = self.store().await;
903 let project = state.project(project_id)?;
904 host_user_id = project.host.user_id;
905 host_connection_id = project.host_connection_id;
906 guest_user_id = state.user_id_for_connection(request.sender_id)?;
907 };
908
909 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
910
911 let mut store = self.store().await;
912 let (project, replica_id) = store.join_project(request.sender_id, project_id)?;
913 let peer_count = project.guests.len();
914 let mut collaborators = Vec::with_capacity(peer_count);
915 collaborators.push(proto::Collaborator {
916 peer_id: project.host_connection_id.0,
917 replica_id: 0,
918 user_id: project.host.user_id.to_proto(),
919 });
920 let worktrees = project
921 .worktrees
922 .iter()
923 .map(|(id, worktree)| proto::WorktreeMetadata {
924 id: *id,
925 root_name: worktree.root_name.clone(),
926 visible: worktree.visible,
927 })
928 .collect::<Vec<_>>();
929
930 // Add all guests other than the requesting user's own connections as collaborators
931 for (guest_conn_id, guest) in &project.guests {
932 if request.sender_id != *guest_conn_id {
933 collaborators.push(proto::Collaborator {
934 peer_id: guest_conn_id.0,
935 replica_id: guest.replica_id as u32,
936 user_id: guest.user_id.to_proto(),
937 });
938 }
939 }
940
941 for conn_id in project.connection_ids() {
942 if conn_id != request.sender_id {
943 self.peer.send(
944 conn_id,
945 proto::AddProjectCollaborator {
946 project_id: project_id.to_proto(),
947 collaborator: Some(proto::Collaborator {
948 peer_id: request.sender_id.0,
949 replica_id: replica_id as u32,
950 user_id: guest_user_id.to_proto(),
951 }),
952 },
953 )?;
954 }
955 }
956
957 // First, we send the metadata associated with each worktree.
958 response.send(proto::JoinProjectResponse {
959 worktrees: worktrees.clone(),
960 replica_id: replica_id as u32,
961 collaborators: collaborators.clone(),
962 language_servers: project.language_servers.clone(),
963 })?;
964
965 for (worktree_id, worktree) in &project.worktrees {
966 #[cfg(any(test, feature = "test-support"))]
967 const MAX_CHUNK_SIZE: usize = 2;
968 #[cfg(not(any(test, feature = "test-support")))]
969 const MAX_CHUNK_SIZE: usize = 256;
970
971 // Stream this worktree's entries.
972 let message = proto::UpdateWorktree {
973 project_id: project_id.to_proto(),
974 worktree_id: *worktree_id,
975 root_name: worktree.root_name.clone(),
976 updated_entries: worktree.entries.values().cloned().collect(),
977 removed_entries: Default::default(),
978 scan_id: worktree.scan_id,
979 is_last_update: worktree.is_complete,
980 };
981 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
982 self.peer.send(request.sender_id, update.clone())?;
983 }
984
985 // Stream this worktree's diagnostics.
986 for summary in worktree.diagnostic_summaries.values() {
987 self.peer.send(
988 request.sender_id,
989 proto::UpdateDiagnosticSummary {
990 project_id: project_id.to_proto(),
991 worktree_id: *worktree_id,
992 summary: Some(summary.clone()),
993 },
994 )?;
995 }
996 }
997
998 Ok(())
999 }
1000
1001 async fn leave_project(
1002 self: Arc<Server>,
1003 request: TypedEnvelope<proto::LeaveProject>,
1004 ) -> Result<()> {
1005 let sender_id = request.sender_id;
1006 let project_id = ProjectId::from_proto(request.payload.project_id);
1007 let project;
1008 {
1009 let mut store = self.store().await;
1010 project = store.leave_project(project_id, sender_id)?;
1011 tracing::info!(
1012 %project_id,
1013 host_user_id = %project.host_user_id,
1014 host_connection_id = %project.host_connection_id,
1015 "leave project"
1016 );
1017
1018 if project.remove_collaborator {
1019 broadcast(sender_id, project.connection_ids, |conn_id| {
1020 self.peer.send(
1021 conn_id,
1022 proto::RemoveProjectCollaborator {
1023 project_id: project_id.to_proto(),
1024 peer_id: sender_id.0,
1025 },
1026 )
1027 });
1028 }
1029 }
1030
1031 Ok(())
1032 }
1033
1034 async fn update_project(
1035 self: Arc<Server>,
1036 request: TypedEnvelope<proto::UpdateProject>,
1037 ) -> Result<()> {
1038 let project_id = ProjectId::from_proto(request.payload.project_id);
1039 {
1040 let mut state = self.store().await;
1041 let guest_connection_ids = state
1042 .read_project(project_id, request.sender_id)?
1043 .guest_connection_ids();
1044 let room =
1045 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
1046 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1047 self.peer
1048 .forward_send(request.sender_id, connection_id, request.payload.clone())
1049 });
1050 self.room_updated(room);
1051 };
1052
1053 Ok(())
1054 }
1055
1056 async fn register_project_activity(
1057 self: Arc<Server>,
1058 request: TypedEnvelope<proto::RegisterProjectActivity>,
1059 ) -> Result<()> {
1060 self.store().await.register_project_activity(
1061 ProjectId::from_proto(request.payload.project_id),
1062 request.sender_id,
1063 )?;
1064 Ok(())
1065 }
1066
1067 async fn update_worktree(
1068 self: Arc<Server>,
1069 request: TypedEnvelope<proto::UpdateWorktree>,
1070 response: Response<proto::UpdateWorktree>,
1071 ) -> Result<()> {
1072 let project_id = ProjectId::from_proto(request.payload.project_id);
1073 let worktree_id = request.payload.worktree_id;
1074 let connection_ids = self.store().await.update_worktree(
1075 request.sender_id,
1076 project_id,
1077 worktree_id,
1078 &request.payload.root_name,
1079 &request.payload.removed_entries,
1080 &request.payload.updated_entries,
1081 request.payload.scan_id,
1082 request.payload.is_last_update,
1083 )?;
1084
1085 broadcast(request.sender_id, connection_ids, |connection_id| {
1086 self.peer
1087 .forward_send(request.sender_id, connection_id, request.payload.clone())
1088 });
1089 response.send(proto::Ack {})?;
1090 Ok(())
1091 }
1092
1093 async fn update_worktree_extensions(
1094 self: Arc<Server>,
1095 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1096 ) -> Result<()> {
1097 let project_id = ProjectId::from_proto(request.payload.project_id);
1098 let worktree_id = request.payload.worktree_id;
1099 let extensions = request
1100 .payload
1101 .extensions
1102 .into_iter()
1103 .zip(request.payload.counts)
1104 .collect();
1105 self.app_state
1106 .db
1107 .update_worktree_extensions(project_id, worktree_id, extensions)
1108 .await?;
1109 Ok(())
1110 }
1111
1112 async fn update_diagnostic_summary(
1113 self: Arc<Server>,
1114 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1115 ) -> Result<()> {
1116 let summary = request
1117 .payload
1118 .summary
1119 .clone()
1120 .ok_or_else(|| anyhow!("invalid summary"))?;
1121 let receiver_ids = self.store().await.update_diagnostic_summary(
1122 ProjectId::from_proto(request.payload.project_id),
1123 request.payload.worktree_id,
1124 request.sender_id,
1125 summary,
1126 )?;
1127
1128 broadcast(request.sender_id, receiver_ids, |connection_id| {
1129 self.peer
1130 .forward_send(request.sender_id, connection_id, request.payload.clone())
1131 });
1132 Ok(())
1133 }
1134
1135 async fn start_language_server(
1136 self: Arc<Server>,
1137 request: TypedEnvelope<proto::StartLanguageServer>,
1138 ) -> Result<()> {
1139 let receiver_ids = self.store().await.start_language_server(
1140 ProjectId::from_proto(request.payload.project_id),
1141 request.sender_id,
1142 request
1143 .payload
1144 .server
1145 .clone()
1146 .ok_or_else(|| anyhow!("invalid language server"))?,
1147 )?;
1148 broadcast(request.sender_id, receiver_ids, |connection_id| {
1149 self.peer
1150 .forward_send(request.sender_id, connection_id, request.payload.clone())
1151 });
1152 Ok(())
1153 }
1154
1155 async fn update_language_server(
1156 self: Arc<Server>,
1157 request: TypedEnvelope<proto::UpdateLanguageServer>,
1158 ) -> Result<()> {
1159 let receiver_ids = self.store().await.project_connection_ids(
1160 ProjectId::from_proto(request.payload.project_id),
1161 request.sender_id,
1162 )?;
1163 broadcast(request.sender_id, receiver_ids, |connection_id| {
1164 self.peer
1165 .forward_send(request.sender_id, connection_id, request.payload.clone())
1166 });
1167 Ok(())
1168 }
1169
1170 async fn forward_project_request<T>(
1171 self: Arc<Server>,
1172 request: TypedEnvelope<T>,
1173 response: Response<T>,
1174 ) -> Result<()>
1175 where
1176 T: EntityMessage + RequestMessage,
1177 {
1178 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1179 let host_connection_id = self
1180 .store()
1181 .await
1182 .read_project(project_id, request.sender_id)?
1183 .host_connection_id;
1184 let payload = self
1185 .peer
1186 .forward_request(request.sender_id, host_connection_id, request.payload)
1187 .await?;
1188
1189 // Ensure project still exists by the time we get the response from the host.
1190 self.store()
1191 .await
1192 .read_project(project_id, request.sender_id)?;
1193
1194 response.send(payload)?;
1195 Ok(())
1196 }
1197
1198 async fn save_buffer(
1199 self: Arc<Server>,
1200 request: TypedEnvelope<proto::SaveBuffer>,
1201 response: Response<proto::SaveBuffer>,
1202 ) -> Result<()> {
1203 let project_id = ProjectId::from_proto(request.payload.project_id);
1204 let host = self
1205 .store()
1206 .await
1207 .read_project(project_id, request.sender_id)?
1208 .host_connection_id;
1209 let response_payload = self
1210 .peer
1211 .forward_request(request.sender_id, host, request.payload.clone())
1212 .await?;
1213
1214 let mut guests = self
1215 .store()
1216 .await
1217 .read_project(project_id, request.sender_id)?
1218 .connection_ids();
1219 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1220 broadcast(host, guests, |conn_id| {
1221 self.peer
1222 .forward_send(host, conn_id, response_payload.clone())
1223 });
1224 response.send(response_payload)?;
1225 Ok(())
1226 }
1227
1228 async fn create_buffer_for_peer(
1229 self: Arc<Server>,
1230 request: TypedEnvelope<proto::CreateBufferForPeer>,
1231 ) -> Result<()> {
1232 self.peer.forward_send(
1233 request.sender_id,
1234 ConnectionId(request.payload.peer_id),
1235 request.payload,
1236 )?;
1237 Ok(())
1238 }
1239
1240 async fn update_buffer(
1241 self: Arc<Server>,
1242 request: TypedEnvelope<proto::UpdateBuffer>,
1243 response: Response<proto::UpdateBuffer>,
1244 ) -> Result<()> {
1245 let project_id = ProjectId::from_proto(request.payload.project_id);
1246 let receiver_ids = {
1247 let mut store = self.store().await;
1248 store.register_project_activity(project_id, request.sender_id)?;
1249 store.project_connection_ids(project_id, request.sender_id)?
1250 };
1251
1252 broadcast(request.sender_id, receiver_ids, |connection_id| {
1253 self.peer
1254 .forward_send(request.sender_id, connection_id, request.payload.clone())
1255 });
1256 response.send(proto::Ack {})?;
1257 Ok(())
1258 }
1259
1260 async fn update_buffer_file(
1261 self: Arc<Server>,
1262 request: TypedEnvelope<proto::UpdateBufferFile>,
1263 ) -> Result<()> {
1264 let receiver_ids = self.store().await.project_connection_ids(
1265 ProjectId::from_proto(request.payload.project_id),
1266 request.sender_id,
1267 )?;
1268 broadcast(request.sender_id, receiver_ids, |connection_id| {
1269 self.peer
1270 .forward_send(request.sender_id, connection_id, request.payload.clone())
1271 });
1272 Ok(())
1273 }
1274
1275 async fn buffer_reloaded(
1276 self: Arc<Server>,
1277 request: TypedEnvelope<proto::BufferReloaded>,
1278 ) -> Result<()> {
1279 let receiver_ids = self.store().await.project_connection_ids(
1280 ProjectId::from_proto(request.payload.project_id),
1281 request.sender_id,
1282 )?;
1283 broadcast(request.sender_id, receiver_ids, |connection_id| {
1284 self.peer
1285 .forward_send(request.sender_id, connection_id, request.payload.clone())
1286 });
1287 Ok(())
1288 }
1289
1290 async fn buffer_saved(
1291 self: Arc<Server>,
1292 request: TypedEnvelope<proto::BufferSaved>,
1293 ) -> Result<()> {
1294 let receiver_ids = self.store().await.project_connection_ids(
1295 ProjectId::from_proto(request.payload.project_id),
1296 request.sender_id,
1297 )?;
1298 broadcast(request.sender_id, receiver_ids, |connection_id| {
1299 self.peer
1300 .forward_send(request.sender_id, connection_id, request.payload.clone())
1301 });
1302 Ok(())
1303 }
1304
1305 async fn follow(
1306 self: Arc<Self>,
1307 request: TypedEnvelope<proto::Follow>,
1308 response: Response<proto::Follow>,
1309 ) -> Result<()> {
1310 let project_id = ProjectId::from_proto(request.payload.project_id);
1311 let leader_id = ConnectionId(request.payload.leader_id);
1312 let follower_id = request.sender_id;
1313 {
1314 let mut store = self.store().await;
1315 if !store
1316 .project_connection_ids(project_id, follower_id)?
1317 .contains(&leader_id)
1318 {
1319 Err(anyhow!("no such peer"))?;
1320 }
1321
1322 store.register_project_activity(project_id, follower_id)?;
1323 }
1324
1325 let mut response_payload = self
1326 .peer
1327 .forward_request(request.sender_id, leader_id, request.payload)
1328 .await?;
1329 response_payload
1330 .views
1331 .retain(|view| view.leader_id != Some(follower_id.0));
1332 response.send(response_payload)?;
1333 Ok(())
1334 }
1335
1336 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1337 let project_id = ProjectId::from_proto(request.payload.project_id);
1338 let leader_id = ConnectionId(request.payload.leader_id);
1339 let mut store = self.store().await;
1340 if !store
1341 .project_connection_ids(project_id, request.sender_id)?
1342 .contains(&leader_id)
1343 {
1344 Err(anyhow!("no such peer"))?;
1345 }
1346 store.register_project_activity(project_id, request.sender_id)?;
1347 self.peer
1348 .forward_send(request.sender_id, leader_id, request.payload)?;
1349 Ok(())
1350 }
1351
1352 async fn update_followers(
1353 self: Arc<Self>,
1354 request: TypedEnvelope<proto::UpdateFollowers>,
1355 ) -> Result<()> {
1356 let project_id = ProjectId::from_proto(request.payload.project_id);
1357 let mut store = self.store().await;
1358 store.register_project_activity(project_id, request.sender_id)?;
1359 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1360 let leader_id = request
1361 .payload
1362 .variant
1363 .as_ref()
1364 .and_then(|variant| match variant {
1365 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1366 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1367 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1368 });
1369 for follower_id in &request.payload.follower_ids {
1370 let follower_id = ConnectionId(*follower_id);
1371 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1372 self.peer
1373 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1374 }
1375 }
1376 Ok(())
1377 }
1378
1379 async fn get_channels(
1380 self: Arc<Server>,
1381 request: TypedEnvelope<proto::GetChannels>,
1382 response: Response<proto::GetChannels>,
1383 ) -> Result<()> {
1384 let user_id = self
1385 .store()
1386 .await
1387 .user_id_for_connection(request.sender_id)?;
1388 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1389 response.send(proto::GetChannelsResponse {
1390 channels: channels
1391 .into_iter()
1392 .map(|chan| proto::Channel {
1393 id: chan.id.to_proto(),
1394 name: chan.name,
1395 })
1396 .collect(),
1397 })?;
1398 Ok(())
1399 }
1400
1401 async fn get_users(
1402 self: Arc<Server>,
1403 request: TypedEnvelope<proto::GetUsers>,
1404 response: Response<proto::GetUsers>,
1405 ) -> Result<()> {
1406 let user_ids = request
1407 .payload
1408 .user_ids
1409 .into_iter()
1410 .map(UserId::from_proto)
1411 .collect();
1412 let users = self
1413 .app_state
1414 .db
1415 .get_users_by_ids(user_ids)
1416 .await?
1417 .into_iter()
1418 .map(|user| proto::User {
1419 id: user.id.to_proto(),
1420 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1421 github_login: user.github_login,
1422 })
1423 .collect();
1424 response.send(proto::UsersResponse { users })?;
1425 Ok(())
1426 }
1427
1428 async fn fuzzy_search_users(
1429 self: Arc<Server>,
1430 request: TypedEnvelope<proto::FuzzySearchUsers>,
1431 response: Response<proto::FuzzySearchUsers>,
1432 ) -> Result<()> {
1433 let user_id = self
1434 .store()
1435 .await
1436 .user_id_for_connection(request.sender_id)?;
1437 let query = request.payload.query;
1438 let db = &self.app_state.db;
1439 let users = match query.len() {
1440 0 => vec![],
1441 1 | 2 => db
1442 .get_user_by_github_account(&query, None)
1443 .await?
1444 .into_iter()
1445 .collect(),
1446 _ => db.fuzzy_search_users(&query, 10).await?,
1447 };
1448 let users = users
1449 .into_iter()
1450 .filter(|user| user.id != user_id)
1451 .map(|user| proto::User {
1452 id: user.id.to_proto(),
1453 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1454 github_login: user.github_login,
1455 })
1456 .collect();
1457 response.send(proto::UsersResponse { users })?;
1458 Ok(())
1459 }
1460
1461 async fn request_contact(
1462 self: Arc<Server>,
1463 request: TypedEnvelope<proto::RequestContact>,
1464 response: Response<proto::RequestContact>,
1465 ) -> Result<()> {
1466 let requester_id = self
1467 .store()
1468 .await
1469 .user_id_for_connection(request.sender_id)?;
1470 let responder_id = UserId::from_proto(request.payload.responder_id);
1471 if requester_id == responder_id {
1472 return Err(anyhow!("cannot add yourself as a contact"))?;
1473 }
1474
1475 self.app_state
1476 .db
1477 .send_contact_request(requester_id, responder_id)
1478 .await?;
1479
1480 // Update outgoing contact requests of requester
1481 let mut update = proto::UpdateContacts::default();
1482 update.outgoing_requests.push(responder_id.to_proto());
1483 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1484 self.peer.send(connection_id, update.clone())?;
1485 }
1486
1487 // Update incoming contact requests of responder
1488 let mut update = proto::UpdateContacts::default();
1489 update
1490 .incoming_requests
1491 .push(proto::IncomingContactRequest {
1492 requester_id: requester_id.to_proto(),
1493 should_notify: true,
1494 });
1495 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1496 self.peer.send(connection_id, update.clone())?;
1497 }
1498
1499 response.send(proto::Ack {})?;
1500 Ok(())
1501 }
1502
1503 async fn respond_to_contact_request(
1504 self: Arc<Server>,
1505 request: TypedEnvelope<proto::RespondToContactRequest>,
1506 response: Response<proto::RespondToContactRequest>,
1507 ) -> Result<()> {
1508 let responder_id = self
1509 .store()
1510 .await
1511 .user_id_for_connection(request.sender_id)?;
1512 let requester_id = UserId::from_proto(request.payload.requester_id);
1513 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1514 self.app_state
1515 .db
1516 .dismiss_contact_notification(responder_id, requester_id)
1517 .await?;
1518 } else {
1519 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1520 self.app_state
1521 .db
1522 .respond_to_contact_request(responder_id, requester_id, accept)
1523 .await?;
1524
1525 let store = self.store().await;
1526 // Update responder with new contact
1527 let mut update = proto::UpdateContacts::default();
1528 if accept {
1529 update
1530 .contacts
1531 .push(store.contact_for_user(requester_id, false));
1532 }
1533 update
1534 .remove_incoming_requests
1535 .push(requester_id.to_proto());
1536 for connection_id in store.connection_ids_for_user(responder_id) {
1537 self.peer.send(connection_id, update.clone())?;
1538 }
1539
1540 // Update requester with new contact
1541 let mut update = proto::UpdateContacts::default();
1542 if accept {
1543 update
1544 .contacts
1545 .push(store.contact_for_user(responder_id, true));
1546 }
1547 update
1548 .remove_outgoing_requests
1549 .push(responder_id.to_proto());
1550 for connection_id in store.connection_ids_for_user(requester_id) {
1551 self.peer.send(connection_id, update.clone())?;
1552 }
1553 }
1554
1555 response.send(proto::Ack {})?;
1556 Ok(())
1557 }
1558
1559 async fn remove_contact(
1560 self: Arc<Server>,
1561 request: TypedEnvelope<proto::RemoveContact>,
1562 response: Response<proto::RemoveContact>,
1563 ) -> Result<()> {
1564 let requester_id = self
1565 .store()
1566 .await
1567 .user_id_for_connection(request.sender_id)?;
1568 let responder_id = UserId::from_proto(request.payload.user_id);
1569 self.app_state
1570 .db
1571 .remove_contact(requester_id, responder_id)
1572 .await?;
1573
1574 // Update outgoing contact requests of requester
1575 let mut update = proto::UpdateContacts::default();
1576 update
1577 .remove_outgoing_requests
1578 .push(responder_id.to_proto());
1579 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1580 self.peer.send(connection_id, update.clone())?;
1581 }
1582
1583 // Update incoming contact requests of responder
1584 let mut update = proto::UpdateContacts::default();
1585 update
1586 .remove_incoming_requests
1587 .push(requester_id.to_proto());
1588 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1589 self.peer.send(connection_id, update.clone())?;
1590 }
1591
1592 response.send(proto::Ack {})?;
1593 Ok(())
1594 }
1595
1596 async fn join_channel(
1597 self: Arc<Self>,
1598 request: TypedEnvelope<proto::JoinChannel>,
1599 response: Response<proto::JoinChannel>,
1600 ) -> Result<()> {
1601 let user_id = self
1602 .store()
1603 .await
1604 .user_id_for_connection(request.sender_id)?;
1605 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1606 if !self
1607 .app_state
1608 .db
1609 .can_user_access_channel(user_id, channel_id)
1610 .await?
1611 {
1612 Err(anyhow!("access denied"))?;
1613 }
1614
1615 self.store()
1616 .await
1617 .join_channel(request.sender_id, channel_id);
1618 let messages = self
1619 .app_state
1620 .db
1621 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1622 .await?
1623 .into_iter()
1624 .map(|msg| proto::ChannelMessage {
1625 id: msg.id.to_proto(),
1626 body: msg.body,
1627 timestamp: msg.sent_at.unix_timestamp() as u64,
1628 sender_id: msg.sender_id.to_proto(),
1629 nonce: Some(msg.nonce.as_u128().into()),
1630 })
1631 .collect::<Vec<_>>();
1632 response.send(proto::JoinChannelResponse {
1633 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1634 messages,
1635 })?;
1636 Ok(())
1637 }
1638
1639 async fn leave_channel(
1640 self: Arc<Self>,
1641 request: TypedEnvelope<proto::LeaveChannel>,
1642 ) -> Result<()> {
1643 let user_id = self
1644 .store()
1645 .await
1646 .user_id_for_connection(request.sender_id)?;
1647 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1648 if !self
1649 .app_state
1650 .db
1651 .can_user_access_channel(user_id, channel_id)
1652 .await?
1653 {
1654 Err(anyhow!("access denied"))?;
1655 }
1656
1657 self.store()
1658 .await
1659 .leave_channel(request.sender_id, channel_id);
1660
1661 Ok(())
1662 }
1663
1664 async fn send_channel_message(
1665 self: Arc<Self>,
1666 request: TypedEnvelope<proto::SendChannelMessage>,
1667 response: Response<proto::SendChannelMessage>,
1668 ) -> Result<()> {
1669 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1670 let user_id;
1671 let connection_ids;
1672 {
1673 let state = self.store().await;
1674 user_id = state.user_id_for_connection(request.sender_id)?;
1675 connection_ids = state.channel_connection_ids(channel_id)?;
1676 }
1677
1678 // Validate the message body.
1679 let body = request.payload.body.trim().to_string();
1680 if body.len() > MAX_MESSAGE_LEN {
1681 return Err(anyhow!("message is too long"))?;
1682 }
1683 if body.is_empty() {
1684 return Err(anyhow!("message can't be blank"))?;
1685 }
1686
1687 let timestamp = OffsetDateTime::now_utc();
1688 let nonce = request
1689 .payload
1690 .nonce
1691 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1692
1693 let message_id = self
1694 .app_state
1695 .db
1696 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1697 .await?
1698 .to_proto();
1699 let message = proto::ChannelMessage {
1700 sender_id: user_id.to_proto(),
1701 id: message_id,
1702 body,
1703 timestamp: timestamp.unix_timestamp() as u64,
1704 nonce: Some(nonce),
1705 };
1706 broadcast(request.sender_id, connection_ids, |conn_id| {
1707 self.peer.send(
1708 conn_id,
1709 proto::ChannelMessageSent {
1710 channel_id: channel_id.to_proto(),
1711 message: Some(message.clone()),
1712 },
1713 )
1714 });
1715 response.send(proto::SendChannelMessageResponse {
1716 message: Some(message),
1717 })?;
1718 Ok(())
1719 }
1720
1721 async fn get_channel_messages(
1722 self: Arc<Self>,
1723 request: TypedEnvelope<proto::GetChannelMessages>,
1724 response: Response<proto::GetChannelMessages>,
1725 ) -> Result<()> {
1726 let user_id = self
1727 .store()
1728 .await
1729 .user_id_for_connection(request.sender_id)?;
1730 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1731 if !self
1732 .app_state
1733 .db
1734 .can_user_access_channel(user_id, channel_id)
1735 .await?
1736 {
1737 Err(anyhow!("access denied"))?;
1738 }
1739
1740 let messages = self
1741 .app_state
1742 .db
1743 .get_channel_messages(
1744 channel_id,
1745 MESSAGE_COUNT_PER_PAGE,
1746 Some(MessageId::from_proto(request.payload.before_message_id)),
1747 )
1748 .await?
1749 .into_iter()
1750 .map(|msg| proto::ChannelMessage {
1751 id: msg.id.to_proto(),
1752 body: msg.body,
1753 timestamp: msg.sent_at.unix_timestamp() as u64,
1754 sender_id: msg.sender_id.to_proto(),
1755 nonce: Some(msg.nonce.as_u128().into()),
1756 })
1757 .collect::<Vec<_>>();
1758 response.send(proto::GetChannelMessagesResponse {
1759 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1760 messages,
1761 })?;
1762 Ok(())
1763 }
1764
1765 async fn update_diff_base(
1766 self: Arc<Server>,
1767 request: TypedEnvelope<proto::UpdateDiffBase>,
1768 ) -> Result<()> {
1769 let receiver_ids = self.store().await.project_connection_ids(
1770 ProjectId::from_proto(request.payload.project_id),
1771 request.sender_id,
1772 )?;
1773 broadcast(request.sender_id, receiver_ids, |connection_id| {
1774 self.peer
1775 .forward_send(request.sender_id, connection_id, request.payload.clone())
1776 });
1777 Ok(())
1778 }
1779
1780 async fn get_private_user_info(
1781 self: Arc<Self>,
1782 request: TypedEnvelope<proto::GetPrivateUserInfo>,
1783 response: Response<proto::GetPrivateUserInfo>,
1784 ) -> Result<()> {
1785 let user_id = self
1786 .store()
1787 .await
1788 .user_id_for_connection(request.sender_id)?;
1789 let metrics_id = self.app_state.db.get_user_metrics_id(user_id).await?;
1790 let user = self
1791 .app_state
1792 .db
1793 .get_user_by_id(user_id)
1794 .await?
1795 .ok_or_else(|| anyhow!("user not found"))?;
1796 response.send(proto::GetPrivateUserInfoResponse {
1797 metrics_id,
1798 staff: user.admin,
1799 })?;
1800 Ok(())
1801 }
1802
1803 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1804 #[cfg(test)]
1805 tokio::task::yield_now().await;
1806 let guard = self.store.lock().await;
1807 #[cfg(test)]
1808 tokio::task::yield_now().await;
1809 StoreGuard {
1810 guard,
1811 _not_send: PhantomData,
1812 }
1813 }
1814
1815 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1816 ServerSnapshot {
1817 store: self.store().await,
1818 peer: &self.peer,
1819 }
1820 }
1821}
1822
1823impl<'a> Deref for StoreGuard<'a> {
1824 type Target = Store;
1825
1826 fn deref(&self) -> &Self::Target {
1827 &*self.guard
1828 }
1829}
1830
1831impl<'a> DerefMut for StoreGuard<'a> {
1832 fn deref_mut(&mut self) -> &mut Self::Target {
1833 &mut *self.guard
1834 }
1835}
1836
1837impl<'a> Drop for StoreGuard<'a> {
1838 fn drop(&mut self) {
1839 #[cfg(test)]
1840 self.check_invariants();
1841 }
1842}
1843
1844impl Executor for RealExecutor {
1845 type Sleep = Sleep;
1846
1847 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1848 tokio::task::spawn(future);
1849 }
1850
1851 fn sleep(&self, duration: Duration) -> Self::Sleep {
1852 tokio::time::sleep(duration)
1853 }
1854}
1855
1856fn broadcast<F>(
1857 sender_id: ConnectionId,
1858 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1859 mut f: F,
1860) where
1861 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1862{
1863 for receiver_id in receiver_ids {
1864 if receiver_id != sender_id {
1865 f(receiver_id).trace_err();
1866 }
1867 }
1868}
1869
1870lazy_static! {
1871 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1872}
1873
1874pub struct ProtocolVersion(u32);
1875
1876impl Header for ProtocolVersion {
1877 fn name() -> &'static HeaderName {
1878 &ZED_PROTOCOL_VERSION
1879 }
1880
1881 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1882 where
1883 Self: Sized,
1884 I: Iterator<Item = &'i axum::http::HeaderValue>,
1885 {
1886 let version = values
1887 .next()
1888 .ok_or_else(axum::headers::Error::invalid)?
1889 .to_str()
1890 .map_err(|_| axum::headers::Error::invalid())?
1891 .parse()
1892 .map_err(|_| axum::headers::Error::invalid())?;
1893 Ok(Self(version))
1894 }
1895
1896 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1897 values.extend([self.0.to_string().parse().unwrap()]);
1898 }
1899}
1900
1901pub fn routes(server: Arc<Server>) -> Router<Body> {
1902 Router::new()
1903 .route("/rpc", get(handle_websocket_request))
1904 .layer(
1905 ServiceBuilder::new()
1906 .layer(Extension(server.app_state.clone()))
1907 .layer(middleware::from_fn(auth::validate_header)),
1908 )
1909 .route("/metrics", get(handle_metrics))
1910 .layer(Extension(server))
1911}
1912
1913pub async fn handle_websocket_request(
1914 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1915 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1916 Extension(server): Extension<Arc<Server>>,
1917 Extension(user): Extension<User>,
1918 ws: WebSocketUpgrade,
1919) -> axum::response::Response {
1920 if protocol_version != rpc::PROTOCOL_VERSION {
1921 return (
1922 StatusCode::UPGRADE_REQUIRED,
1923 "client must be upgraded".to_string(),
1924 )
1925 .into_response();
1926 }
1927 let socket_address = socket_address.to_string();
1928 ws.on_upgrade(move |socket| {
1929 use util::ResultExt;
1930 let socket = socket
1931 .map_ok(to_tungstenite_message)
1932 .err_into()
1933 .with(|message| async move { Ok(to_axum_message(message)) });
1934 let connection = Connection::new(Box::pin(socket));
1935 async move {
1936 server
1937 .handle_connection(connection, socket_address, user, None, RealExecutor)
1938 .await
1939 .log_err();
1940 }
1941 })
1942}
1943
1944pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1945 // We call `store_mut` here for its side effects of updating metrics.
1946 let metrics = server.store().await.metrics();
1947 METRIC_CONNECTIONS.set(metrics.connections as _);
1948 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1949 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1950 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1951
1952 let encoder = prometheus::TextEncoder::new();
1953 let metric_families = prometheus::gather();
1954 match encoder.encode_to_string(&metric_families) {
1955 Ok(string) => (StatusCode::OK, string).into_response(),
1956 Err(error) => (
1957 StatusCode::INTERNAL_SERVER_ERROR,
1958 format!("failed to encode metrics {:?}", error),
1959 )
1960 .into_response(),
1961 }
1962}
1963
1964fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1965 match message {
1966 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1967 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1968 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1969 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1970 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1971 code: frame.code.into(),
1972 reason: frame.reason,
1973 })),
1974 }
1975}
1976
1977fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1978 match message {
1979 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1980 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1981 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1982 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1983 AxumMessage::Close(frame) => {
1984 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1985 code: frame.code.into(),
1986 reason: frame.reason,
1987 }))
1988 }
1989 }
1990}
1991
1992pub trait ResultExt {
1993 type Ok;
1994
1995 fn trace_err(self) -> Option<Self::Ok>;
1996}
1997
1998impl<T, E> ResultExt for Result<T, E>
1999where
2000 E: std::fmt::Debug,
2001{
2002 type Ok = T;
2003
2004 fn trace_err(self) -> Option<T> {
2005 match self {
2006 Ok(value) => Some(value),
2007 Err(error) => {
2008 tracing::error!("{:?}", error);
2009 None
2010 }
2011 }
2012 }
2013}