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 project_id;
480 {
481 let mut state = self.store_mut().await;
482 let user_id = state.user_id_for_connection(request.sender_id)?;
483 project_id = state.register_project(request.sender_id, user_id);
484 };
485
486 response.send(proto::RegisterProjectResponse { project_id })?;
487
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 // Send out the `UpdateContacts` message before responding to the unregister
532 // request. This way, when the project's host can keep track of the project's
533 // remote id until after they've received the `UpdateContacts` message for
534 // themself.
535 self.update_user_contacts(user_id).await?;
536 response.send(proto::Ack {})?;
537
538 Ok(())
539 }
540
541 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
542 let contacts = self.app_state.db.get_contacts(user_id).await?;
543 let store = self.store().await;
544 let updated_contact = store.contact_for_user(user_id, false);
545 for contact in contacts {
546 if let db::Contact::Accepted {
547 user_id: contact_user_id,
548 ..
549 } = contact
550 {
551 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
552 self.peer
553 .send(
554 contact_conn_id,
555 proto::UpdateContacts {
556 contacts: vec![updated_contact.clone()],
557 remove_contacts: Default::default(),
558 incoming_requests: Default::default(),
559 remove_incoming_requests: Default::default(),
560 outgoing_requests: Default::default(),
561 remove_outgoing_requests: Default::default(),
562 },
563 )
564 .trace_err();
565 }
566 }
567 }
568 Ok(())
569 }
570
571 async fn join_project(
572 self: Arc<Server>,
573 request: TypedEnvelope<proto::JoinProject>,
574 response: Response<proto::JoinProject>,
575 ) -> Result<()> {
576 let project_id = request.payload.project_id;
577
578 let host_user_id;
579 let guest_user_id;
580 let host_connection_id;
581 {
582 let state = self.store().await;
583 let project = state.project(project_id)?;
584 host_user_id = project.host_user_id;
585 host_connection_id = project.host_connection_id;
586 guest_user_id = state.user_id_for_connection(request.sender_id)?;
587 };
588
589 let has_contact = self
590 .app_state
591 .db
592 .has_contact(guest_user_id, host_user_id)
593 .await?;
594 if !has_contact {
595 return Err(anyhow!("no such project"))?;
596 }
597
598 self.store_mut().await.request_join_project(
599 guest_user_id,
600 project_id,
601 response.into_receipt(),
602 )?;
603 self.peer.send(
604 host_connection_id,
605 proto::RequestJoinProject {
606 project_id,
607 requester_id: guest_user_id.to_proto(),
608 },
609 )?;
610 Ok(())
611 }
612
613 async fn respond_to_join_project_request(
614 self: Arc<Server>,
615 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
616 ) -> Result<()> {
617 let host_user_id;
618
619 {
620 let mut state = self.store_mut().await;
621 let project_id = request.payload.project_id;
622 let project = state.project(project_id)?;
623 if project.host_connection_id != request.sender_id {
624 Err(anyhow!("no such connection"))?;
625 }
626
627 host_user_id = project.host_user_id;
628 let guest_user_id = UserId::from_proto(request.payload.requester_id);
629
630 if !request.payload.allow {
631 let receipts = state
632 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
633 .ok_or_else(|| anyhow!("no such request"))?;
634 for receipt in receipts {
635 self.peer.respond(
636 receipt,
637 proto::JoinProjectResponse {
638 variant: Some(proto::join_project_response::Variant::Decline(
639 proto::join_project_response::Decline {
640 reason: proto::join_project_response::decline::Reason::Declined
641 as i32,
642 },
643 )),
644 },
645 )?;
646 }
647 return Ok(());
648 }
649
650 let (receipts_with_replica_ids, project) = state
651 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
652 .ok_or_else(|| anyhow!("no such request"))?;
653
654 let peer_count = project.guests.len();
655 let mut collaborators = Vec::with_capacity(peer_count);
656 collaborators.push(proto::Collaborator {
657 peer_id: project.host_connection_id.0,
658 replica_id: 0,
659 user_id: project.host_user_id.to_proto(),
660 });
661 let worktrees = project
662 .worktrees
663 .iter()
664 .filter_map(|(id, shared_worktree)| {
665 let worktree = project.worktrees.get(&id)?;
666 Some(proto::Worktree {
667 id: *id,
668 root_name: worktree.root_name.clone(),
669 entries: shared_worktree.entries.values().cloned().collect(),
670 diagnostic_summaries: shared_worktree
671 .diagnostic_summaries
672 .values()
673 .cloned()
674 .collect(),
675 visible: worktree.visible,
676 scan_id: shared_worktree.scan_id,
677 })
678 })
679 .collect::<Vec<_>>();
680
681 // Add all guests other than the requesting user's own connections as collaborators
682 for (peer_conn_id, (peer_replica_id, peer_user_id)) in &project.guests {
683 if receipts_with_replica_ids
684 .iter()
685 .all(|(receipt, _)| receipt.sender_id != *peer_conn_id)
686 {
687 collaborators.push(proto::Collaborator {
688 peer_id: peer_conn_id.0,
689 replica_id: *peer_replica_id as u32,
690 user_id: peer_user_id.to_proto(),
691 });
692 }
693 }
694
695 for conn_id in project.connection_ids() {
696 for (receipt, replica_id) in &receipts_with_replica_ids {
697 if conn_id != receipt.sender_id {
698 self.peer.send(
699 conn_id,
700 proto::AddProjectCollaborator {
701 project_id,
702 collaborator: Some(proto::Collaborator {
703 peer_id: receipt.sender_id.0,
704 replica_id: *replica_id as u32,
705 user_id: guest_user_id.to_proto(),
706 }),
707 },
708 )?;
709 }
710 }
711 }
712
713 for (receipt, replica_id) in receipts_with_replica_ids {
714 self.peer.respond(
715 receipt,
716 proto::JoinProjectResponse {
717 variant: Some(proto::join_project_response::Variant::Accept(
718 proto::join_project_response::Accept {
719 worktrees: worktrees.clone(),
720 replica_id: replica_id as u32,
721 collaborators: collaborators.clone(),
722 language_servers: project.language_servers.clone(),
723 },
724 )),
725 },
726 )?;
727 }
728 }
729
730 self.update_user_contacts(host_user_id).await?;
731 Ok(())
732 }
733
734 async fn leave_project(
735 self: Arc<Server>,
736 request: TypedEnvelope<proto::LeaveProject>,
737 ) -> Result<()> {
738 let sender_id = request.sender_id;
739 let project_id = request.payload.project_id;
740 let project;
741 {
742 let mut store = self.store_mut().await;
743 project = store.leave_project(sender_id, project_id)?;
744
745 if project.remove_collaborator {
746 broadcast(sender_id, project.connection_ids, |conn_id| {
747 self.peer.send(
748 conn_id,
749 proto::RemoveProjectCollaborator {
750 project_id,
751 peer_id: sender_id.0,
752 },
753 )
754 });
755 }
756
757 if let Some(requester_id) = project.cancel_request {
758 self.peer.send(
759 project.host_connection_id,
760 proto::JoinProjectRequestCancelled {
761 project_id,
762 requester_id: requester_id.to_proto(),
763 },
764 )?;
765 }
766
767 if project.unshare {
768 self.peer.send(
769 project.host_connection_id,
770 proto::ProjectUnshared { project_id },
771 )?;
772 }
773 }
774 self.update_user_contacts(project.host_user_id).await?;
775 Ok(())
776 }
777
778 async fn update_project(
779 self: Arc<Server>,
780 request: TypedEnvelope<proto::UpdateProject>,
781 ) -> Result<()> {
782 let user_id;
783 {
784 let mut state = self.store_mut().await;
785 user_id = state.user_id_for_connection(request.sender_id)?;
786 let guest_connection_ids = state
787 .read_project(request.payload.project_id, request.sender_id)?
788 .guest_connection_ids();
789 state.update_project(
790 request.payload.project_id,
791 &request.payload.worktrees,
792 request.sender_id,
793 )?;
794 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
795 self.peer
796 .forward_send(request.sender_id, connection_id, request.payload.clone())
797 });
798 };
799 self.update_user_contacts(user_id).await?;
800 Ok(())
801 }
802
803 async fn update_worktree(
804 self: Arc<Server>,
805 request: TypedEnvelope<proto::UpdateWorktree>,
806 response: Response<proto::UpdateWorktree>,
807 ) -> Result<()> {
808 let (connection_ids, metadata_changed) = self.store_mut().await.update_worktree(
809 request.sender_id,
810 request.payload.project_id,
811 request.payload.worktree_id,
812 &request.payload.root_name,
813 &request.payload.removed_entries,
814 &request.payload.updated_entries,
815 request.payload.scan_id,
816 )?;
817
818 broadcast(request.sender_id, connection_ids, |connection_id| {
819 self.peer
820 .forward_send(request.sender_id, connection_id, request.payload.clone())
821 });
822 if metadata_changed {
823 let user_id = self
824 .store()
825 .await
826 .user_id_for_connection(request.sender_id)?;
827 self.update_user_contacts(user_id).await?;
828 }
829 response.send(proto::Ack {})?;
830 Ok(())
831 }
832
833 async fn update_diagnostic_summary(
834 self: Arc<Server>,
835 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
836 ) -> Result<()> {
837 let summary = request
838 .payload
839 .summary
840 .clone()
841 .ok_or_else(|| anyhow!("invalid summary"))?;
842 let receiver_ids = self.store_mut().await.update_diagnostic_summary(
843 request.payload.project_id,
844 request.payload.worktree_id,
845 request.sender_id,
846 summary,
847 )?;
848
849 broadcast(request.sender_id, receiver_ids, |connection_id| {
850 self.peer
851 .forward_send(request.sender_id, connection_id, request.payload.clone())
852 });
853 Ok(())
854 }
855
856 async fn start_language_server(
857 self: Arc<Server>,
858 request: TypedEnvelope<proto::StartLanguageServer>,
859 ) -> Result<()> {
860 let receiver_ids = self.store_mut().await.start_language_server(
861 request.payload.project_id,
862 request.sender_id,
863 request
864 .payload
865 .server
866 .clone()
867 .ok_or_else(|| anyhow!("invalid language server"))?,
868 )?;
869 broadcast(request.sender_id, receiver_ids, |connection_id| {
870 self.peer
871 .forward_send(request.sender_id, connection_id, request.payload.clone())
872 });
873 Ok(())
874 }
875
876 async fn update_language_server(
877 self: Arc<Server>,
878 request: TypedEnvelope<proto::UpdateLanguageServer>,
879 ) -> Result<()> {
880 let receiver_ids = self
881 .store()
882 .await
883 .project_connection_ids(request.payload.project_id, request.sender_id)?;
884 broadcast(request.sender_id, receiver_ids, |connection_id| {
885 self.peer
886 .forward_send(request.sender_id, connection_id, request.payload.clone())
887 });
888 Ok(())
889 }
890
891 async fn forward_project_request<T>(
892 self: Arc<Server>,
893 request: TypedEnvelope<T>,
894 response: Response<T>,
895 ) -> Result<()>
896 where
897 T: EntityMessage + RequestMessage,
898 {
899 let host_connection_id = self
900 .store()
901 .await
902 .read_project(request.payload.remote_entity_id(), request.sender_id)?
903 .host_connection_id;
904
905 response.send(
906 self.peer
907 .forward_request(request.sender_id, host_connection_id, request.payload)
908 .await?,
909 )?;
910 Ok(())
911 }
912
913 async fn save_buffer(
914 self: Arc<Server>,
915 request: TypedEnvelope<proto::SaveBuffer>,
916 response: Response<proto::SaveBuffer>,
917 ) -> Result<()> {
918 let host = self
919 .store()
920 .await
921 .read_project(request.payload.project_id, request.sender_id)?
922 .host_connection_id;
923 let response_payload = self
924 .peer
925 .forward_request(request.sender_id, host, request.payload.clone())
926 .await?;
927
928 let mut guests = self
929 .store()
930 .await
931 .read_project(request.payload.project_id, request.sender_id)?
932 .connection_ids();
933 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
934 broadcast(host, guests, |conn_id| {
935 self.peer
936 .forward_send(host, conn_id, response_payload.clone())
937 });
938 response.send(response_payload)?;
939 Ok(())
940 }
941
942 async fn update_buffer(
943 self: Arc<Server>,
944 request: TypedEnvelope<proto::UpdateBuffer>,
945 response: Response<proto::UpdateBuffer>,
946 ) -> Result<()> {
947 let receiver_ids = self
948 .store()
949 .await
950 .project_connection_ids(request.payload.project_id, request.sender_id)?;
951 broadcast(request.sender_id, receiver_ids, |connection_id| {
952 self.peer
953 .forward_send(request.sender_id, connection_id, request.payload.clone())
954 });
955 response.send(proto::Ack {})?;
956 Ok(())
957 }
958
959 async fn update_buffer_file(
960 self: Arc<Server>,
961 request: TypedEnvelope<proto::UpdateBufferFile>,
962 ) -> Result<()> {
963 let receiver_ids = self
964 .store()
965 .await
966 .project_connection_ids(request.payload.project_id, request.sender_id)?;
967 broadcast(request.sender_id, receiver_ids, |connection_id| {
968 self.peer
969 .forward_send(request.sender_id, connection_id, request.payload.clone())
970 });
971 Ok(())
972 }
973
974 async fn buffer_reloaded(
975 self: Arc<Server>,
976 request: TypedEnvelope<proto::BufferReloaded>,
977 ) -> Result<()> {
978 let receiver_ids = self
979 .store()
980 .await
981 .project_connection_ids(request.payload.project_id, request.sender_id)?;
982 broadcast(request.sender_id, receiver_ids, |connection_id| {
983 self.peer
984 .forward_send(request.sender_id, connection_id, request.payload.clone())
985 });
986 Ok(())
987 }
988
989 async fn buffer_saved(
990 self: Arc<Server>,
991 request: TypedEnvelope<proto::BufferSaved>,
992 ) -> Result<()> {
993 let receiver_ids = self
994 .store()
995 .await
996 .project_connection_ids(request.payload.project_id, request.sender_id)?;
997 broadcast(request.sender_id, receiver_ids, |connection_id| {
998 self.peer
999 .forward_send(request.sender_id, connection_id, request.payload.clone())
1000 });
1001 Ok(())
1002 }
1003
1004 async fn follow(
1005 self: Arc<Self>,
1006 request: TypedEnvelope<proto::Follow>,
1007 response: Response<proto::Follow>,
1008 ) -> Result<()> {
1009 let leader_id = ConnectionId(request.payload.leader_id);
1010 let follower_id = request.sender_id;
1011 if !self
1012 .store()
1013 .await
1014 .project_connection_ids(request.payload.project_id, follower_id)?
1015 .contains(&leader_id)
1016 {
1017 Err(anyhow!("no such peer"))?;
1018 }
1019 let mut response_payload = self
1020 .peer
1021 .forward_request(request.sender_id, leader_id, request.payload)
1022 .await?;
1023 response_payload
1024 .views
1025 .retain(|view| view.leader_id != Some(follower_id.0));
1026 response.send(response_payload)?;
1027 Ok(())
1028 }
1029
1030 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1031 let leader_id = ConnectionId(request.payload.leader_id);
1032 if !self
1033 .store()
1034 .await
1035 .project_connection_ids(request.payload.project_id, request.sender_id)?
1036 .contains(&leader_id)
1037 {
1038 Err(anyhow!("no such peer"))?;
1039 }
1040 self.peer
1041 .forward_send(request.sender_id, leader_id, request.payload)?;
1042 Ok(())
1043 }
1044
1045 async fn update_followers(
1046 self: Arc<Self>,
1047 request: TypedEnvelope<proto::UpdateFollowers>,
1048 ) -> Result<()> {
1049 let connection_ids = self
1050 .store()
1051 .await
1052 .project_connection_ids(request.payload.project_id, request.sender_id)?;
1053 let leader_id = request
1054 .payload
1055 .variant
1056 .as_ref()
1057 .and_then(|variant| match variant {
1058 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1059 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1060 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1061 });
1062 for follower_id in &request.payload.follower_ids {
1063 let follower_id = ConnectionId(*follower_id);
1064 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1065 self.peer
1066 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1067 }
1068 }
1069 Ok(())
1070 }
1071
1072 async fn get_channels(
1073 self: Arc<Server>,
1074 request: TypedEnvelope<proto::GetChannels>,
1075 response: Response<proto::GetChannels>,
1076 ) -> Result<()> {
1077 let user_id = self
1078 .store()
1079 .await
1080 .user_id_for_connection(request.sender_id)?;
1081 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1082 response.send(proto::GetChannelsResponse {
1083 channels: channels
1084 .into_iter()
1085 .map(|chan| proto::Channel {
1086 id: chan.id.to_proto(),
1087 name: chan.name,
1088 })
1089 .collect(),
1090 })?;
1091 Ok(())
1092 }
1093
1094 async fn get_users(
1095 self: Arc<Server>,
1096 request: TypedEnvelope<proto::GetUsers>,
1097 response: Response<proto::GetUsers>,
1098 ) -> Result<()> {
1099 let user_ids = request
1100 .payload
1101 .user_ids
1102 .into_iter()
1103 .map(UserId::from_proto)
1104 .collect();
1105 let users = self
1106 .app_state
1107 .db
1108 .get_users_by_ids(user_ids)
1109 .await?
1110 .into_iter()
1111 .map(|user| proto::User {
1112 id: user.id.to_proto(),
1113 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1114 github_login: user.github_login,
1115 })
1116 .collect();
1117 response.send(proto::UsersResponse { users })?;
1118 Ok(())
1119 }
1120
1121 async fn fuzzy_search_users(
1122 self: Arc<Server>,
1123 request: TypedEnvelope<proto::FuzzySearchUsers>,
1124 response: Response<proto::FuzzySearchUsers>,
1125 ) -> Result<()> {
1126 let user_id = self
1127 .store()
1128 .await
1129 .user_id_for_connection(request.sender_id)?;
1130 let query = request.payload.query;
1131 let db = &self.app_state.db;
1132 let users = match query.len() {
1133 0 => vec![],
1134 1 | 2 => db
1135 .get_user_by_github_login(&query)
1136 .await?
1137 .into_iter()
1138 .collect(),
1139 _ => db.fuzzy_search_users(&query, 10).await?,
1140 };
1141 let users = users
1142 .into_iter()
1143 .filter(|user| user.id != user_id)
1144 .map(|user| proto::User {
1145 id: user.id.to_proto(),
1146 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1147 github_login: user.github_login,
1148 })
1149 .collect();
1150 response.send(proto::UsersResponse { users })?;
1151 Ok(())
1152 }
1153
1154 async fn request_contact(
1155 self: Arc<Server>,
1156 request: TypedEnvelope<proto::RequestContact>,
1157 response: Response<proto::RequestContact>,
1158 ) -> Result<()> {
1159 let requester_id = self
1160 .store()
1161 .await
1162 .user_id_for_connection(request.sender_id)?;
1163 let responder_id = UserId::from_proto(request.payload.responder_id);
1164 if requester_id == responder_id {
1165 return Err(anyhow!("cannot add yourself as a contact"))?;
1166 }
1167
1168 self.app_state
1169 .db
1170 .send_contact_request(requester_id, responder_id)
1171 .await?;
1172
1173 // Update outgoing contact requests of requester
1174 let mut update = proto::UpdateContacts::default();
1175 update.outgoing_requests.push(responder_id.to_proto());
1176 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1177 self.peer.send(connection_id, update.clone())?;
1178 }
1179
1180 // Update incoming contact requests of responder
1181 let mut update = proto::UpdateContacts::default();
1182 update
1183 .incoming_requests
1184 .push(proto::IncomingContactRequest {
1185 requester_id: requester_id.to_proto(),
1186 should_notify: true,
1187 });
1188 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1189 self.peer.send(connection_id, update.clone())?;
1190 }
1191
1192 response.send(proto::Ack {})?;
1193 Ok(())
1194 }
1195
1196 async fn respond_to_contact_request(
1197 self: Arc<Server>,
1198 request: TypedEnvelope<proto::RespondToContactRequest>,
1199 response: Response<proto::RespondToContactRequest>,
1200 ) -> Result<()> {
1201 let responder_id = self
1202 .store()
1203 .await
1204 .user_id_for_connection(request.sender_id)?;
1205 let requester_id = UserId::from_proto(request.payload.requester_id);
1206 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1207 self.app_state
1208 .db
1209 .dismiss_contact_notification(responder_id, requester_id)
1210 .await?;
1211 } else {
1212 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1213 self.app_state
1214 .db
1215 .respond_to_contact_request(responder_id, requester_id, accept)
1216 .await?;
1217
1218 let store = self.store().await;
1219 // Update responder with new contact
1220 let mut update = proto::UpdateContacts::default();
1221 if accept {
1222 update
1223 .contacts
1224 .push(store.contact_for_user(requester_id, false));
1225 }
1226 update
1227 .remove_incoming_requests
1228 .push(requester_id.to_proto());
1229 for connection_id in store.connection_ids_for_user(responder_id) {
1230 self.peer.send(connection_id, update.clone())?;
1231 }
1232
1233 // Update requester with new contact
1234 let mut update = proto::UpdateContacts::default();
1235 if accept {
1236 update
1237 .contacts
1238 .push(store.contact_for_user(responder_id, true));
1239 }
1240 update
1241 .remove_outgoing_requests
1242 .push(responder_id.to_proto());
1243 for connection_id in store.connection_ids_for_user(requester_id) {
1244 self.peer.send(connection_id, update.clone())?;
1245 }
1246 }
1247
1248 response.send(proto::Ack {})?;
1249 Ok(())
1250 }
1251
1252 async fn remove_contact(
1253 self: Arc<Server>,
1254 request: TypedEnvelope<proto::RemoveContact>,
1255 response: Response<proto::RemoveContact>,
1256 ) -> Result<()> {
1257 let requester_id = self
1258 .store()
1259 .await
1260 .user_id_for_connection(request.sender_id)?;
1261 let responder_id = UserId::from_proto(request.payload.user_id);
1262 self.app_state
1263 .db
1264 .remove_contact(requester_id, responder_id)
1265 .await?;
1266
1267 // Update outgoing contact requests of requester
1268 let mut update = proto::UpdateContacts::default();
1269 update
1270 .remove_outgoing_requests
1271 .push(responder_id.to_proto());
1272 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1273 self.peer.send(connection_id, update.clone())?;
1274 }
1275
1276 // Update incoming contact requests of responder
1277 let mut update = proto::UpdateContacts::default();
1278 update
1279 .remove_incoming_requests
1280 .push(requester_id.to_proto());
1281 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1282 self.peer.send(connection_id, update.clone())?;
1283 }
1284
1285 response.send(proto::Ack {})?;
1286 Ok(())
1287 }
1288
1289 async fn join_channel(
1290 self: Arc<Self>,
1291 request: TypedEnvelope<proto::JoinChannel>,
1292 response: Response<proto::JoinChannel>,
1293 ) -> Result<()> {
1294 let user_id = self
1295 .store()
1296 .await
1297 .user_id_for_connection(request.sender_id)?;
1298 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1299 if !self
1300 .app_state
1301 .db
1302 .can_user_access_channel(user_id, channel_id)
1303 .await?
1304 {
1305 Err(anyhow!("access denied"))?;
1306 }
1307
1308 self.store_mut()
1309 .await
1310 .join_channel(request.sender_id, channel_id);
1311 let messages = self
1312 .app_state
1313 .db
1314 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1315 .await?
1316 .into_iter()
1317 .map(|msg| proto::ChannelMessage {
1318 id: msg.id.to_proto(),
1319 body: msg.body,
1320 timestamp: msg.sent_at.unix_timestamp() as u64,
1321 sender_id: msg.sender_id.to_proto(),
1322 nonce: Some(msg.nonce.as_u128().into()),
1323 })
1324 .collect::<Vec<_>>();
1325 response.send(proto::JoinChannelResponse {
1326 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1327 messages,
1328 })?;
1329 Ok(())
1330 }
1331
1332 async fn leave_channel(
1333 self: Arc<Self>,
1334 request: TypedEnvelope<proto::LeaveChannel>,
1335 ) -> Result<()> {
1336 let user_id = self
1337 .store()
1338 .await
1339 .user_id_for_connection(request.sender_id)?;
1340 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1341 if !self
1342 .app_state
1343 .db
1344 .can_user_access_channel(user_id, channel_id)
1345 .await?
1346 {
1347 Err(anyhow!("access denied"))?;
1348 }
1349
1350 self.store_mut()
1351 .await
1352 .leave_channel(request.sender_id, channel_id);
1353
1354 Ok(())
1355 }
1356
1357 async fn send_channel_message(
1358 self: Arc<Self>,
1359 request: TypedEnvelope<proto::SendChannelMessage>,
1360 response: Response<proto::SendChannelMessage>,
1361 ) -> Result<()> {
1362 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1363 let user_id;
1364 let connection_ids;
1365 {
1366 let state = self.store().await;
1367 user_id = state.user_id_for_connection(request.sender_id)?;
1368 connection_ids = state.channel_connection_ids(channel_id)?;
1369 }
1370
1371 // Validate the message body.
1372 let body = request.payload.body.trim().to_string();
1373 if body.len() > MAX_MESSAGE_LEN {
1374 return Err(anyhow!("message is too long"))?;
1375 }
1376 if body.is_empty() {
1377 return Err(anyhow!("message can't be blank"))?;
1378 }
1379
1380 let timestamp = OffsetDateTime::now_utc();
1381 let nonce = request
1382 .payload
1383 .nonce
1384 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1385
1386 let message_id = self
1387 .app_state
1388 .db
1389 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1390 .await?
1391 .to_proto();
1392 let message = proto::ChannelMessage {
1393 sender_id: user_id.to_proto(),
1394 id: message_id,
1395 body,
1396 timestamp: timestamp.unix_timestamp() as u64,
1397 nonce: Some(nonce),
1398 };
1399 broadcast(request.sender_id, connection_ids, |conn_id| {
1400 self.peer.send(
1401 conn_id,
1402 proto::ChannelMessageSent {
1403 channel_id: channel_id.to_proto(),
1404 message: Some(message.clone()),
1405 },
1406 )
1407 });
1408 response.send(proto::SendChannelMessageResponse {
1409 message: Some(message),
1410 })?;
1411 Ok(())
1412 }
1413
1414 async fn get_channel_messages(
1415 self: Arc<Self>,
1416 request: TypedEnvelope<proto::GetChannelMessages>,
1417 response: Response<proto::GetChannelMessages>,
1418 ) -> Result<()> {
1419 let user_id = self
1420 .store()
1421 .await
1422 .user_id_for_connection(request.sender_id)?;
1423 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1424 if !self
1425 .app_state
1426 .db
1427 .can_user_access_channel(user_id, channel_id)
1428 .await?
1429 {
1430 Err(anyhow!("access denied"))?;
1431 }
1432
1433 let messages = self
1434 .app_state
1435 .db
1436 .get_channel_messages(
1437 channel_id,
1438 MESSAGE_COUNT_PER_PAGE,
1439 Some(MessageId::from_proto(request.payload.before_message_id)),
1440 )
1441 .await?
1442 .into_iter()
1443 .map(|msg| proto::ChannelMessage {
1444 id: msg.id.to_proto(),
1445 body: msg.body,
1446 timestamp: msg.sent_at.unix_timestamp() as u64,
1447 sender_id: msg.sender_id.to_proto(),
1448 nonce: Some(msg.nonce.as_u128().into()),
1449 })
1450 .collect::<Vec<_>>();
1451 response.send(proto::GetChannelMessagesResponse {
1452 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1453 messages,
1454 })?;
1455 Ok(())
1456 }
1457
1458 async fn store<'a>(self: &'a Arc<Self>) -> StoreReadGuard<'a> {
1459 #[cfg(test)]
1460 tokio::task::yield_now().await;
1461 let guard = self.store.read().await;
1462 #[cfg(test)]
1463 tokio::task::yield_now().await;
1464 StoreReadGuard {
1465 guard,
1466 _not_send: PhantomData,
1467 }
1468 }
1469
1470 async fn store_mut<'a>(self: &'a Arc<Self>) -> StoreWriteGuard<'a> {
1471 #[cfg(test)]
1472 tokio::task::yield_now().await;
1473 let guard = self.store.write().await;
1474 #[cfg(test)]
1475 tokio::task::yield_now().await;
1476 StoreWriteGuard {
1477 guard,
1478 _not_send: PhantomData,
1479 }
1480 }
1481
1482 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1483 ServerSnapshot {
1484 store: self.store.read().await,
1485 peer: &self.peer,
1486 }
1487 }
1488}
1489
1490impl<'a> Deref for StoreReadGuard<'a> {
1491 type Target = Store;
1492
1493 fn deref(&self) -> &Self::Target {
1494 &*self.guard
1495 }
1496}
1497
1498impl<'a> Deref for StoreWriteGuard<'a> {
1499 type Target = Store;
1500
1501 fn deref(&self) -> &Self::Target {
1502 &*self.guard
1503 }
1504}
1505
1506impl<'a> DerefMut for StoreWriteGuard<'a> {
1507 fn deref_mut(&mut self) -> &mut Self::Target {
1508 &mut *self.guard
1509 }
1510}
1511
1512impl<'a> Drop for StoreWriteGuard<'a> {
1513 fn drop(&mut self) {
1514 #[cfg(test)]
1515 self.check_invariants();
1516
1517 let metrics = self.metrics();
1518 tracing::info!(
1519 connections = metrics.connections,
1520 registered_projects = metrics.registered_projects,
1521 shared_projects = metrics.shared_projects,
1522 "metrics"
1523 );
1524 }
1525}
1526
1527impl Executor for RealExecutor {
1528 type Sleep = Sleep;
1529
1530 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1531 tokio::task::spawn(future);
1532 }
1533
1534 fn sleep(&self, duration: Duration) -> Self::Sleep {
1535 tokio::time::sleep(duration)
1536 }
1537}
1538
1539fn broadcast<F>(
1540 sender_id: ConnectionId,
1541 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1542 mut f: F,
1543) where
1544 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1545{
1546 for receiver_id in receiver_ids {
1547 if receiver_id != sender_id {
1548 f(receiver_id).trace_err();
1549 }
1550 }
1551}
1552
1553lazy_static! {
1554 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1555}
1556
1557pub struct ProtocolVersion(u32);
1558
1559impl Header for ProtocolVersion {
1560 fn name() -> &'static HeaderName {
1561 &ZED_PROTOCOL_VERSION
1562 }
1563
1564 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1565 where
1566 Self: Sized,
1567 I: Iterator<Item = &'i axum::http::HeaderValue>,
1568 {
1569 let version = values
1570 .next()
1571 .ok_or_else(|| axum::headers::Error::invalid())?
1572 .to_str()
1573 .map_err(|_| axum::headers::Error::invalid())?
1574 .parse()
1575 .map_err(|_| axum::headers::Error::invalid())?;
1576 Ok(Self(version))
1577 }
1578
1579 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1580 values.extend([self.0.to_string().parse().unwrap()]);
1581 }
1582}
1583
1584pub fn routes(server: Arc<Server>) -> Router<Body> {
1585 Router::new()
1586 .route("/rpc", get(handle_websocket_request))
1587 .layer(
1588 ServiceBuilder::new()
1589 .layer(Extension(server.app_state.clone()))
1590 .layer(middleware::from_fn(auth::validate_header))
1591 .layer(Extension(server)),
1592 )
1593}
1594
1595pub async fn handle_websocket_request(
1596 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1597 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1598 Extension(server): Extension<Arc<Server>>,
1599 Extension(user): Extension<User>,
1600 ws: WebSocketUpgrade,
1601) -> axum::response::Response {
1602 if protocol_version != rpc::PROTOCOL_VERSION {
1603 return (
1604 StatusCode::UPGRADE_REQUIRED,
1605 "client must be upgraded".to_string(),
1606 )
1607 .into_response();
1608 }
1609 let socket_address = socket_address.to_string();
1610 ws.on_upgrade(move |socket| {
1611 use util::ResultExt;
1612 let socket = socket
1613 .map_ok(to_tungstenite_message)
1614 .err_into()
1615 .with(|message| async move { Ok(to_axum_message(message)) });
1616 let connection = Connection::new(Box::pin(socket));
1617 async move {
1618 server
1619 .handle_connection(connection, socket_address, user, None, RealExecutor)
1620 .await
1621 .log_err();
1622 }
1623 })
1624}
1625
1626fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1627 match message {
1628 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1629 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1630 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1631 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1632 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1633 code: frame.code.into(),
1634 reason: frame.reason,
1635 })),
1636 }
1637}
1638
1639fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1640 match message {
1641 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1642 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1643 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1644 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1645 AxumMessage::Close(frame) => {
1646 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1647 code: frame.code.into(),
1648 reason: frame.reason,
1649 }))
1650 }
1651 }
1652}
1653
1654pub trait ResultExt {
1655 type Ok;
1656
1657 fn trace_err(self) -> Option<Self::Ok>;
1658}
1659
1660impl<T, E> ResultExt for Result<T, E>
1661where
1662 E: std::fmt::Debug,
1663{
1664 type Ok = T;
1665
1666 fn trace_err(self) -> Option<T> {
1667 match self {
1668 Ok(value) => Some(value),
1669 Err(error) => {
1670 tracing::error!("{:?}", error);
1671 None
1672 }
1673 }
1674 }
1675}