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