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