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