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