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