1mod store;
2
3use crate::{
4 auth,
5 db::{self, ChannelId, MessageId, ProjectId, User, UserId},
6 AppState, Result,
7};
8use anyhow::anyhow;
9use async_tungstenite::tungstenite::{
10 protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
11};
12use axum::{
13 body::Body,
14 extract::{
15 ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
16 ConnectInfo, WebSocketUpgrade,
17 },
18 headers::{Header, HeaderName},
19 http::StatusCode,
20 middleware,
21 response::IntoResponse,
22 routing::get,
23 Extension, Router, TypedHeader,
24};
25use collections::HashMap;
26use futures::{
27 channel::mpsc,
28 future::{self, BoxFuture},
29 stream::FuturesUnordered,
30 FutureExt, SinkExt, StreamExt, TryStreamExt,
31};
32use lazy_static::lazy_static;
33use prometheus::{register_int_gauge, IntGauge};
34use rpc::{
35 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
36 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
37};
38use serde::{Serialize, Serializer};
39use std::{
40 any::TypeId,
41 future::Future,
42 marker::PhantomData,
43 net::SocketAddr,
44 ops::{Deref, DerefMut},
45 rc::Rc,
46 sync::{
47 atomic::{AtomicBool, Ordering::SeqCst},
48 Arc,
49 },
50 time::Duration,
51};
52use time::OffsetDateTime;
53use tokio::{
54 sync::{RwLock, RwLockReadGuard, RwLockWriteGuard},
55 time::Sleep,
56};
57use tower::ServiceBuilder;
58use tracing::{info_span, instrument, Instrument};
59
60pub use store::{Store, Worktree};
61
62lazy_static! {
63 static ref METRIC_CONNECTIONS: IntGauge =
64 register_int_gauge!("connections", "number of connections").unwrap();
65 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
66 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
67 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
68 register_int_gauge!("active_projects", "number of active projects").unwrap();
69 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
70 "shared_projects",
71 "number of open projects with one or more guests"
72 )
73 .unwrap();
74}
75
76type MessageHandler =
77 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
78
79struct Response<R> {
80 server: Arc<Server>,
81 receipt: Receipt<R>,
82 responded: Arc<AtomicBool>,
83}
84
85impl<R: RequestMessage> Response<R> {
86 fn send(self, payload: R::Response) -> Result<()> {
87 self.responded.store(true, SeqCst);
88 self.server.peer.respond(self.receipt, payload)?;
89 Ok(())
90 }
91
92 fn into_receipt(self) -> Receipt<R> {
93 self.responded.store(true, SeqCst);
94 self.receipt
95 }
96}
97
98pub struct Server {
99 peer: Arc<Peer>,
100 pub(crate) store: RwLock<Store>,
101 app_state: Arc<AppState>,
102 handlers: HashMap<TypeId, MessageHandler>,
103 notifications: Option<mpsc::UnboundedSender<()>>,
104}
105
106pub trait Executor: Send + Clone {
107 type Sleep: Send + Future;
108 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
109 fn sleep(&self, duration: Duration) -> Self::Sleep;
110}
111
112#[derive(Clone)]
113pub struct RealExecutor;
114
115const MESSAGE_COUNT_PER_PAGE: usize = 100;
116const MAX_MESSAGE_LEN: usize = 1024;
117
118struct StoreReadGuard<'a> {
119 guard: RwLockReadGuard<'a, Store>,
120 _not_send: PhantomData<Rc<()>>,
121}
122
123struct StoreWriteGuard<'a> {
124 guard: RwLockWriteGuard<'a, Store>,
125 _not_send: PhantomData<Rc<()>>,
126}
127
128#[derive(Serialize)]
129pub struct ServerSnapshot<'a> {
130 peer: &'a Peer,
131 #[serde(serialize_with = "serialize_deref")]
132 store: RwLockReadGuard<'a, Store>,
133}
134
135pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
136where
137 S: Serializer,
138 T: Deref<Target = U>,
139 U: Serialize,
140{
141 Serialize::serialize(value.deref(), serializer)
142}
143
144impl Server {
145 pub fn new(
146 app_state: Arc<AppState>,
147 notifications: Option<mpsc::UnboundedSender<()>>,
148 ) -> Arc<Self> {
149 let mut server = Self {
150 peer: Peer::new(),
151 app_state,
152 store: Default::default(),
153 handlers: Default::default(),
154 notifications,
155 };
156
157 server
158 .add_request_handler(Server::ping)
159 .add_request_handler(Server::register_project)
160 .add_request_handler(Server::unregister_project)
161 .add_request_handler(Server::join_project)
162 .add_message_handler(Server::leave_project)
163 .add_message_handler(Server::respond_to_join_project_request)
164 .add_message_handler(Server::update_project)
165 .add_message_handler(Server::register_project_activity)
166 .add_request_handler(Server::update_worktree)
167 .add_message_handler(Server::start_language_server)
168 .add_message_handler(Server::update_language_server)
169 .add_message_handler(Server::update_diagnostic_summary)
170 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
171 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
172 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
173 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
174 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
175 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
176 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
177 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
178 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
179 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
180 .add_request_handler(
181 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
182 )
183 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
184 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
185 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
186 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
187 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
188 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
189 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
190 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
191 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
192 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
193 .add_request_handler(Server::update_buffer)
194 .add_message_handler(Server::update_buffer_file)
195 .add_message_handler(Server::buffer_reloaded)
196 .add_message_handler(Server::buffer_saved)
197 .add_request_handler(Server::save_buffer)
198 .add_request_handler(Server::get_channels)
199 .add_request_handler(Server::get_users)
200 .add_request_handler(Server::fuzzy_search_users)
201 .add_request_handler(Server::request_contact)
202 .add_request_handler(Server::remove_contact)
203 .add_request_handler(Server::respond_to_contact_request)
204 .add_request_handler(Server::join_channel)
205 .add_message_handler(Server::leave_channel)
206 .add_request_handler(Server::send_channel_message)
207 .add_request_handler(Server::follow)
208 .add_message_handler(Server::unfollow)
209 .add_message_handler(Server::update_followers)
210 .add_request_handler(Server::get_channel_messages);
211
212 Arc::new(server)
213 }
214
215 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
216 where
217 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
218 Fut: 'static + Send + Future<Output = Result<()>>,
219 M: EnvelopedMessage,
220 {
221 let prev_handler = self.handlers.insert(
222 TypeId::of::<M>(),
223 Box::new(move |server, envelope| {
224 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
225 let span = info_span!(
226 "handle message",
227 payload_type = envelope.payload_type_name()
228 );
229 span.in_scope(|| {
230 tracing::info!(
231 payload_type = envelope.payload_type_name(),
232 "message received"
233 );
234 });
235 let future = (handler)(server, *envelope);
236 async move {
237 if let Err(error) = future.await {
238 tracing::error!(%error, "error handling message");
239 }
240 }
241 .instrument(span)
242 .boxed()
243 }),
244 );
245 if prev_handler.is_some() {
246 panic!("registered a handler for the same message twice");
247 }
248 self
249 }
250
251 /// Handle a request while holding a lock to the store. This is useful when we're registering
252 /// a connection but we want to respond on the connection before anybody else can send on it.
253 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
254 where
255 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
256 Fut: Send + Future<Output = Result<()>>,
257 M: RequestMessage,
258 {
259 let handler = Arc::new(handler);
260 self.add_message_handler(move |server, envelope| {
261 let receipt = envelope.receipt();
262 let handler = handler.clone();
263 async move {
264 let responded = Arc::new(AtomicBool::default());
265 let response = Response {
266 server: server.clone(),
267 responded: responded.clone(),
268 receipt: envelope.receipt(),
269 };
270 match (handler)(server.clone(), envelope, response).await {
271 Ok(()) => {
272 if responded.load(std::sync::atomic::Ordering::SeqCst) {
273 Ok(())
274 } else {
275 Err(anyhow!("handler did not send a response"))?
276 }
277 }
278 Err(error) => {
279 server.peer.respond_with_error(
280 receipt,
281 proto::Error {
282 message: error.to_string(),
283 },
284 )?;
285 Err(error)
286 }
287 }
288 }
289 })
290 }
291
292 /// Start a long lived task that records which users are active in which projects.
293 pub fn start_recording_project_activity<E: 'static + Executor>(
294 self: &Arc<Self>,
295 interval: Duration,
296 executor: E,
297 ) {
298 executor.spawn_detached({
299 let this = Arc::downgrade(self);
300 let executor = executor.clone();
301 async move {
302 let mut period_start = OffsetDateTime::now_utc();
303 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
304 loop {
305 let sleep = executor.sleep(interval);
306 sleep.await;
307 let this = if let Some(this) = this.upgrade() {
308 this
309 } else {
310 break;
311 };
312
313 active_projects.clear();
314 active_projects.extend(this.store().await.projects().flat_map(
315 |(project_id, project)| {
316 project.guests.values().chain([&project.host]).filter_map(
317 |collaborator| {
318 if !collaborator.admin
319 && collaborator
320 .last_activity
321 .map_or(false, |activity| activity > period_start)
322 {
323 Some((collaborator.user_id, *project_id))
324 } else {
325 None
326 }
327 },
328 )
329 },
330 ));
331
332 let period_end = OffsetDateTime::now_utc();
333 this.app_state
334 .db
335 .record_project_activity(period_start..period_end, &active_projects)
336 .await
337 .trace_err();
338 period_start = period_end;
339 }
340 }
341 });
342 }
343
344 pub fn handle_connection<E: Executor>(
345 self: &Arc<Self>,
346 connection: Connection,
347 address: String,
348 user: User,
349 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
350 executor: E,
351 ) -> impl Future<Output = Result<()>> {
352 let mut this = self.clone();
353 let user_id = user.id;
354 let login = user.github_login;
355 let span = info_span!("handle connection", %user_id, %login, %address);
356 async move {
357 let (connection_id, handle_io, mut incoming_rx) = this
358 .peer
359 .add_connection(connection, {
360 let executor = executor.clone();
361 move |duration| {
362 let timer = executor.sleep(duration);
363 async move {
364 timer.await;
365 }
366 }
367 })
368 .await;
369
370 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
371
372 if let Some(send_connection_id) = send_connection_id.as_mut() {
373 let _ = send_connection_id.send(connection_id).await;
374 }
375
376 if !user.connected_once {
377 this.peer.send(connection_id, proto::ShowContacts {})?;
378 this.app_state.db.set_user_connected_once(user_id, true).await?;
379 }
380
381 let (contacts, invite_code) = future::try_join(
382 this.app_state.db.get_contacts(user_id),
383 this.app_state.db.get_invite_code_for_user(user_id)
384 ).await?;
385
386 {
387 let mut store = this.store_mut().await;
388 store.add_connection(connection_id, user_id, user.admin);
389 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
390
391 if let Some((code, count)) = invite_code {
392 this.peer.send(connection_id, proto::UpdateInviteInfo {
393 url: format!("{}{}", this.app_state.invite_link_prefix, code),
394 count,
395 })?;
396 }
397 }
398 this.update_user_contacts(user_id).await?;
399
400 let handle_io = handle_io.fuse();
401 futures::pin_mut!(handle_io);
402
403 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
404 // This prevents deadlocks when e.g., client A performs a request to client B and
405 // client B performs a request to client A. If both clients stop processing further
406 // messages until their respective request completes, they won't have a chance to
407 // respond to the other client's request and cause a deadlock.
408 //
409 // This arrangement ensures we will attempt to process earlier messages first, but fall
410 // back to processing messages arrived later in the spirit of making progress.
411 let mut foreground_message_handlers = FuturesUnordered::new();
412 loop {
413 let next_message = incoming_rx.next().fuse();
414 futures::pin_mut!(next_message);
415 futures::select_biased! {
416 result = handle_io => {
417 if let Err(error) = result {
418 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
419 }
420 break;
421 }
422 _ = foreground_message_handlers.next() => {}
423 message = next_message => {
424 if let Some(message) = message {
425 let type_name = message.payload_type_name();
426 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
427 let span_enter = span.enter();
428 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
429 let notifications = this.notifications.clone();
430 let is_background = message.is_background();
431 let handle_message = (handler)(this.clone(), message);
432
433 drop(span_enter);
434 let handle_message = async move {
435 handle_message.await;
436 if let Some(mut notifications) = notifications {
437 let _ = notifications.send(()).await;
438 }
439 }.instrument(span);
440
441 if is_background {
442 executor.spawn_detached(handle_message);
443 } else {
444 foreground_message_handlers.push(handle_message);
445 }
446 } else {
447 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
448 }
449 } else {
450 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
451 break;
452 }
453 }
454 }
455 }
456
457 drop(foreground_message_handlers);
458 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
459 if let Err(error) = this.sign_out(connection_id).await {
460 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
461 }
462
463 Ok(())
464 }.instrument(span)
465 }
466
467 #[instrument(skip(self), err)]
468 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
469 self.peer.disconnect(connection_id);
470
471 let mut projects_to_unregister = Vec::new();
472 let removed_user_id;
473 {
474 let mut store = self.store_mut().await;
475 let removed_connection = store.remove_connection(connection_id)?;
476
477 for (project_id, project) in removed_connection.hosted_projects {
478 projects_to_unregister.push(project_id);
479 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
480 self.peer.send(
481 conn_id,
482 proto::UnregisterProject {
483 project_id: project_id.to_proto(),
484 },
485 )
486 });
487
488 for (_, receipts) in project.join_requests {
489 for receipt in receipts {
490 self.peer.respond(
491 receipt,
492 proto::JoinProjectResponse {
493 variant: Some(proto::join_project_response::Variant::Decline(
494 proto::join_project_response::Decline {
495 reason: proto::join_project_response::decline::Reason::WentOffline as i32
496 },
497 )),
498 },
499 )?;
500 }
501 }
502 }
503
504 for project_id in removed_connection.guest_project_ids {
505 if let Some(project) = store.project(project_id).trace_err() {
506 broadcast(connection_id, project.connection_ids(), |conn_id| {
507 self.peer.send(
508 conn_id,
509 proto::RemoveProjectCollaborator {
510 project_id: project_id.to_proto(),
511 peer_id: connection_id.0,
512 },
513 )
514 });
515 if project.guests.is_empty() {
516 self.peer
517 .send(
518 project.host_connection_id,
519 proto::ProjectUnshared {
520 project_id: project_id.to_proto(),
521 },
522 )
523 .trace_err();
524 }
525 }
526 }
527
528 removed_user_id = removed_connection.user_id;
529 };
530
531 self.update_user_contacts(removed_user_id).await.trace_err();
532
533 for project_id in projects_to_unregister {
534 self.app_state
535 .db
536 .unregister_project(project_id)
537 .await
538 .trace_err();
539 }
540
541 Ok(())
542 }
543
544 pub async fn invite_code_redeemed(
545 self: &Arc<Self>,
546 code: &str,
547 invitee_id: UserId,
548 ) -> Result<()> {
549 let user = self.app_state.db.get_user_for_invite_code(code).await?;
550 let store = self.store().await;
551 let invitee_contact = store.contact_for_user(invitee_id, true);
552 for connection_id in store.connection_ids_for_user(user.id) {
553 self.peer.send(
554 connection_id,
555 proto::UpdateContacts {
556 contacts: vec![invitee_contact.clone()],
557 ..Default::default()
558 },
559 )?;
560 self.peer.send(
561 connection_id,
562 proto::UpdateInviteInfo {
563 url: format!("{}{}", self.app_state.invite_link_prefix, code),
564 count: user.invite_count as u32,
565 },
566 )?;
567 }
568 Ok(())
569 }
570
571 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
572 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
573 if let Some(invite_code) = &user.invite_code {
574 let store = self.store().await;
575 for connection_id in store.connection_ids_for_user(user_id) {
576 self.peer.send(
577 connection_id,
578 proto::UpdateInviteInfo {
579 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
580 count: user.invite_count as u32,
581 },
582 )?;
583 }
584 }
585 }
586 Ok(())
587 }
588
589 async fn ping(
590 self: Arc<Server>,
591 _: TypedEnvelope<proto::Ping>,
592 response: Response<proto::Ping>,
593 ) -> Result<()> {
594 response.send(proto::Ack {})?;
595 Ok(())
596 }
597
598 async fn register_project(
599 self: Arc<Server>,
600 request: TypedEnvelope<proto::RegisterProject>,
601 response: Response<proto::RegisterProject>,
602 ) -> Result<()> {
603 let user_id = self
604 .store()
605 .await
606 .user_id_for_connection(request.sender_id)?;
607 let project_id = self.app_state.db.register_project(user_id).await?;
608 self.store_mut()
609 .await
610 .register_project(request.sender_id, project_id)?;
611
612 response.send(proto::RegisterProjectResponse {
613 project_id: project_id.to_proto(),
614 })?;
615
616 Ok(())
617 }
618
619 async fn unregister_project(
620 self: Arc<Server>,
621 request: TypedEnvelope<proto::UnregisterProject>,
622 response: Response<proto::UnregisterProject>,
623 ) -> Result<()> {
624 let project_id = ProjectId::from_proto(request.payload.project_id);
625 let (user_id, project) = {
626 let mut state = self.store_mut().await;
627 let project = state.unregister_project(project_id, request.sender_id)?;
628 (state.user_id_for_connection(request.sender_id)?, project)
629 };
630 self.app_state.db.unregister_project(project_id).await?;
631
632 broadcast(
633 request.sender_id,
634 project.guests.keys().copied(),
635 |conn_id| {
636 self.peer.send(
637 conn_id,
638 proto::UnregisterProject {
639 project_id: project_id.to_proto(),
640 },
641 )
642 },
643 );
644 for (_, receipts) in project.join_requests {
645 for receipt in receipts {
646 self.peer.respond(
647 receipt,
648 proto::JoinProjectResponse {
649 variant: Some(proto::join_project_response::Variant::Decline(
650 proto::join_project_response::Decline {
651 reason: proto::join_project_response::decline::Reason::Closed
652 as i32,
653 },
654 )),
655 },
656 )?;
657 }
658 }
659
660 // Send out the `UpdateContacts` message before responding to the unregister
661 // request. This way, when the project's host can keep track of the project's
662 // remote id until after they've received the `UpdateContacts` message for
663 // themself.
664 self.update_user_contacts(user_id).await?;
665 response.send(proto::Ack {})?;
666
667 Ok(())
668 }
669
670 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
671 let contacts = self.app_state.db.get_contacts(user_id).await?;
672 let store = self.store().await;
673 let updated_contact = store.contact_for_user(user_id, false);
674 for contact in contacts {
675 if let db::Contact::Accepted {
676 user_id: contact_user_id,
677 ..
678 } = contact
679 {
680 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
681 self.peer
682 .send(
683 contact_conn_id,
684 proto::UpdateContacts {
685 contacts: vec![updated_contact.clone()],
686 remove_contacts: Default::default(),
687 incoming_requests: Default::default(),
688 remove_incoming_requests: Default::default(),
689 outgoing_requests: Default::default(),
690 remove_outgoing_requests: Default::default(),
691 },
692 )
693 .trace_err();
694 }
695 }
696 }
697 Ok(())
698 }
699
700 async fn join_project(
701 self: Arc<Server>,
702 request: TypedEnvelope<proto::JoinProject>,
703 response: Response<proto::JoinProject>,
704 ) -> Result<()> {
705 let project_id = ProjectId::from_proto(request.payload.project_id);
706
707 let host_user_id;
708 let guest_user_id;
709 let host_connection_id;
710 {
711 let state = self.store().await;
712 let project = state.project(project_id)?;
713 host_user_id = project.host.user_id;
714 host_connection_id = project.host_connection_id;
715 guest_user_id = state.user_id_for_connection(request.sender_id)?;
716 };
717
718 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
719 let has_contact = self
720 .app_state
721 .db
722 .has_contact(guest_user_id, host_user_id)
723 .await?;
724 if !has_contact {
725 return Err(anyhow!("no such project"))?;
726 }
727
728 self.store_mut().await.request_join_project(
729 guest_user_id,
730 project_id,
731 response.into_receipt(),
732 )?;
733 self.peer.send(
734 host_connection_id,
735 proto::RequestJoinProject {
736 project_id: project_id.to_proto(),
737 requester_id: guest_user_id.to_proto(),
738 },
739 )?;
740 Ok(())
741 }
742
743 async fn respond_to_join_project_request(
744 self: Arc<Server>,
745 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
746 ) -> Result<()> {
747 let host_user_id;
748
749 {
750 let mut state = self.store_mut().await;
751 let project_id = ProjectId::from_proto(request.payload.project_id);
752 let project = state.project(project_id)?;
753 if project.host_connection_id != request.sender_id {
754 Err(anyhow!("no such connection"))?;
755 }
756
757 host_user_id = project.host.user_id;
758 let guest_user_id = UserId::from_proto(request.payload.requester_id);
759
760 if !request.payload.allow {
761 let receipts = state
762 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
763 .ok_or_else(|| anyhow!("no such request"))?;
764 for receipt in receipts {
765 self.peer.respond(
766 receipt,
767 proto::JoinProjectResponse {
768 variant: Some(proto::join_project_response::Variant::Decline(
769 proto::join_project_response::Decline {
770 reason: proto::join_project_response::decline::Reason::Declined
771 as i32,
772 },
773 )),
774 },
775 )?;
776 }
777 return Ok(());
778 }
779
780 let (receipts_with_replica_ids, project) = state
781 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
782 .ok_or_else(|| anyhow!("no such request"))?;
783
784 let peer_count = project.guests.len();
785 let mut collaborators = Vec::with_capacity(peer_count);
786 collaborators.push(proto::Collaborator {
787 peer_id: project.host_connection_id.0,
788 replica_id: 0,
789 user_id: project.host.user_id.to_proto(),
790 });
791 let worktrees = project
792 .worktrees
793 .iter()
794 .map(|(id, worktree)| proto::WorktreeMetadata {
795 id: *id,
796 root_name: worktree.root_name.clone(),
797 visible: worktree.visible,
798 })
799 .collect::<Vec<_>>();
800
801 // Add all guests other than the requesting user's own connections as collaborators
802 for (guest_conn_id, guest) in &project.guests {
803 if receipts_with_replica_ids
804 .iter()
805 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
806 {
807 collaborators.push(proto::Collaborator {
808 peer_id: guest_conn_id.0,
809 replica_id: guest.replica_id as u32,
810 user_id: guest.user_id.to_proto(),
811 });
812 }
813 }
814
815 for conn_id in project.connection_ids() {
816 for (receipt, replica_id) in &receipts_with_replica_ids {
817 if conn_id != receipt.sender_id {
818 self.peer.send(
819 conn_id,
820 proto::AddProjectCollaborator {
821 project_id: project_id.to_proto(),
822 collaborator: Some(proto::Collaborator {
823 peer_id: receipt.sender_id.0,
824 replica_id: *replica_id as u32,
825 user_id: guest_user_id.to_proto(),
826 }),
827 },
828 )?;
829 }
830 }
831 }
832
833 // First, we send the metadata associated with each worktree.
834 for (receipt, replica_id) in &receipts_with_replica_ids {
835 self.peer.respond(
836 receipt.clone(),
837 proto::JoinProjectResponse {
838 variant: Some(proto::join_project_response::Variant::Accept(
839 proto::join_project_response::Accept {
840 worktrees: worktrees.clone(),
841 replica_id: *replica_id as u32,
842 collaborators: collaborators.clone(),
843 language_servers: project.language_servers.clone(),
844 },
845 )),
846 },
847 )?;
848 }
849
850 for (worktree_id, worktree) in &project.worktrees {
851 #[cfg(any(test, feature = "test-support"))]
852 const MAX_CHUNK_SIZE: usize = 2;
853 #[cfg(not(any(test, feature = "test-support")))]
854 const MAX_CHUNK_SIZE: usize = 256;
855
856 // Stream this worktree's entries.
857 let message = proto::UpdateWorktree {
858 project_id: project_id.to_proto(),
859 worktree_id: *worktree_id,
860 root_name: worktree.root_name.clone(),
861 updated_entries: worktree.entries.values().cloned().collect(),
862 removed_entries: Default::default(),
863 scan_id: worktree.scan_id,
864 is_last_update: worktree.is_complete,
865 };
866 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
867 for (receipt, _) in &receipts_with_replica_ids {
868 self.peer.send(receipt.sender_id, update.clone())?;
869 }
870 }
871
872 // Stream this worktree's diagnostics.
873 for summary in worktree.diagnostic_summaries.values() {
874 for (receipt, _) in &receipts_with_replica_ids {
875 self.peer.send(
876 receipt.sender_id,
877 proto::UpdateDiagnosticSummary {
878 project_id: project_id.to_proto(),
879 worktree_id: *worktree_id,
880 summary: Some(summary.clone()),
881 },
882 )?;
883 }
884 }
885 }
886 }
887
888 self.update_user_contacts(host_user_id).await?;
889 Ok(())
890 }
891
892 async fn leave_project(
893 self: Arc<Server>,
894 request: TypedEnvelope<proto::LeaveProject>,
895 ) -> Result<()> {
896 let sender_id = request.sender_id;
897 let project_id = ProjectId::from_proto(request.payload.project_id);
898 let project;
899 {
900 let mut store = self.store_mut().await;
901 project = store.leave_project(sender_id, project_id)?;
902 tracing::info!(
903 %project_id,
904 host_user_id = %project.host_user_id,
905 host_connection_id = %project.host_connection_id,
906 "leave project"
907 );
908
909 if project.remove_collaborator {
910 broadcast(sender_id, project.connection_ids, |conn_id| {
911 self.peer.send(
912 conn_id,
913 proto::RemoveProjectCollaborator {
914 project_id: project_id.to_proto(),
915 peer_id: sender_id.0,
916 },
917 )
918 });
919 }
920
921 if let Some(requester_id) = project.cancel_request {
922 self.peer.send(
923 project.host_connection_id,
924 proto::JoinProjectRequestCancelled {
925 project_id: project_id.to_proto(),
926 requester_id: requester_id.to_proto(),
927 },
928 )?;
929 }
930
931 if project.unshare {
932 self.peer.send(
933 project.host_connection_id,
934 proto::ProjectUnshared {
935 project_id: project_id.to_proto(),
936 },
937 )?;
938 }
939 }
940 self.update_user_contacts(project.host_user_id).await?;
941 Ok(())
942 }
943
944 async fn update_project(
945 self: Arc<Server>,
946 request: TypedEnvelope<proto::UpdateProject>,
947 ) -> Result<()> {
948 let project_id = ProjectId::from_proto(request.payload.project_id);
949 let user_id;
950 {
951 let mut state = self.store_mut().await;
952 user_id = state.user_id_for_connection(request.sender_id)?;
953 let guest_connection_ids = state
954 .read_project(project_id, request.sender_id)?
955 .guest_connection_ids();
956 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
957 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
958 self.peer
959 .forward_send(request.sender_id, connection_id, request.payload.clone())
960 });
961 };
962 self.update_user_contacts(user_id).await?;
963 Ok(())
964 }
965
966 async fn register_project_activity(
967 self: Arc<Server>,
968 request: TypedEnvelope<proto::RegisterProjectActivity>,
969 ) -> Result<()> {
970 self.store_mut().await.register_project_activity(
971 ProjectId::from_proto(request.payload.project_id),
972 request.sender_id,
973 )?;
974 Ok(())
975 }
976
977 async fn update_worktree(
978 self: Arc<Server>,
979 request: TypedEnvelope<proto::UpdateWorktree>,
980 response: Response<proto::UpdateWorktree>,
981 ) -> Result<()> {
982 let project_id = ProjectId::from_proto(request.payload.project_id);
983 let worktree_id = request.payload.worktree_id;
984 let (connection_ids, metadata_changed, extension_counts) = {
985 let mut store = self.store_mut().await;
986 let (connection_ids, metadata_changed, extension_counts) = store.update_worktree(
987 request.sender_id,
988 project_id,
989 worktree_id,
990 &request.payload.root_name,
991 &request.payload.removed_entries,
992 &request.payload.updated_entries,
993 request.payload.scan_id,
994 request.payload.is_last_update,
995 )?;
996 (connection_ids, metadata_changed, extension_counts.clone())
997 };
998 self.app_state
999 .db
1000 .update_worktree_extensions(project_id, worktree_id, extension_counts)
1001 .await?;
1002
1003 broadcast(request.sender_id, connection_ids, |connection_id| {
1004 self.peer
1005 .forward_send(request.sender_id, connection_id, request.payload.clone())
1006 });
1007 if metadata_changed {
1008 let user_id = self
1009 .store()
1010 .await
1011 .user_id_for_connection(request.sender_id)?;
1012 self.update_user_contacts(user_id).await?;
1013 }
1014 response.send(proto::Ack {})?;
1015 Ok(())
1016 }
1017
1018 async fn update_diagnostic_summary(
1019 self: Arc<Server>,
1020 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1021 ) -> Result<()> {
1022 let summary = request
1023 .payload
1024 .summary
1025 .clone()
1026 .ok_or_else(|| anyhow!("invalid summary"))?;
1027 let receiver_ids = self.store_mut().await.update_diagnostic_summary(
1028 ProjectId::from_proto(request.payload.project_id),
1029 request.payload.worktree_id,
1030 request.sender_id,
1031 summary,
1032 )?;
1033
1034 broadcast(request.sender_id, receiver_ids, |connection_id| {
1035 self.peer
1036 .forward_send(request.sender_id, connection_id, request.payload.clone())
1037 });
1038 Ok(())
1039 }
1040
1041 async fn start_language_server(
1042 self: Arc<Server>,
1043 request: TypedEnvelope<proto::StartLanguageServer>,
1044 ) -> Result<()> {
1045 let receiver_ids = self.store_mut().await.start_language_server(
1046 ProjectId::from_proto(request.payload.project_id),
1047 request.sender_id,
1048 request
1049 .payload
1050 .server
1051 .clone()
1052 .ok_or_else(|| anyhow!("invalid language server"))?,
1053 )?;
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 update_language_server(
1062 self: Arc<Server>,
1063 request: TypedEnvelope<proto::UpdateLanguageServer>,
1064 ) -> Result<()> {
1065 let receiver_ids = self.store().await.project_connection_ids(
1066 ProjectId::from_proto(request.payload.project_id),
1067 request.sender_id,
1068 )?;
1069 broadcast(request.sender_id, receiver_ids, |connection_id| {
1070 self.peer
1071 .forward_send(request.sender_id, connection_id, request.payload.clone())
1072 });
1073 Ok(())
1074 }
1075
1076 async fn forward_project_request<T>(
1077 self: Arc<Server>,
1078 request: TypedEnvelope<T>,
1079 response: Response<T>,
1080 ) -> Result<()>
1081 where
1082 T: EntityMessage + RequestMessage,
1083 {
1084 let host_connection_id = self
1085 .store()
1086 .await
1087 .read_project(
1088 ProjectId::from_proto(request.payload.remote_entity_id()),
1089 request.sender_id,
1090 )?
1091 .host_connection_id;
1092
1093 response.send(
1094 self.peer
1095 .forward_request(request.sender_id, host_connection_id, request.payload)
1096 .await?,
1097 )?;
1098 Ok(())
1099 }
1100
1101 async fn save_buffer(
1102 self: Arc<Server>,
1103 request: TypedEnvelope<proto::SaveBuffer>,
1104 response: Response<proto::SaveBuffer>,
1105 ) -> Result<()> {
1106 let project_id = ProjectId::from_proto(request.payload.project_id);
1107 let host = self
1108 .store()
1109 .await
1110 .read_project(project_id, request.sender_id)?
1111 .host_connection_id;
1112 let response_payload = self
1113 .peer
1114 .forward_request(request.sender_id, host, request.payload.clone())
1115 .await?;
1116
1117 let mut guests = self
1118 .store()
1119 .await
1120 .read_project(project_id, request.sender_id)?
1121 .connection_ids();
1122 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1123 broadcast(host, guests, |conn_id| {
1124 self.peer
1125 .forward_send(host, conn_id, response_payload.clone())
1126 });
1127 response.send(response_payload)?;
1128 Ok(())
1129 }
1130
1131 async fn update_buffer(
1132 self: Arc<Server>,
1133 request: TypedEnvelope<proto::UpdateBuffer>,
1134 response: Response<proto::UpdateBuffer>,
1135 ) -> Result<()> {
1136 let project_id = ProjectId::from_proto(request.payload.project_id);
1137 let receiver_ids = {
1138 let mut store = self.store_mut().await;
1139 store.register_project_activity(project_id, request.sender_id)?;
1140 store.project_connection_ids(project_id, request.sender_id)?
1141 };
1142
1143 broadcast(request.sender_id, receiver_ids, |connection_id| {
1144 self.peer
1145 .forward_send(request.sender_id, connection_id, request.payload.clone())
1146 });
1147 response.send(proto::Ack {})?;
1148 Ok(())
1149 }
1150
1151 async fn update_buffer_file(
1152 self: Arc<Server>,
1153 request: TypedEnvelope<proto::UpdateBufferFile>,
1154 ) -> Result<()> {
1155 let receiver_ids = self.store().await.project_connection_ids(
1156 ProjectId::from_proto(request.payload.project_id),
1157 request.sender_id,
1158 )?;
1159 broadcast(request.sender_id, receiver_ids, |connection_id| {
1160 self.peer
1161 .forward_send(request.sender_id, connection_id, request.payload.clone())
1162 });
1163 Ok(())
1164 }
1165
1166 async fn buffer_reloaded(
1167 self: Arc<Server>,
1168 request: TypedEnvelope<proto::BufferReloaded>,
1169 ) -> Result<()> {
1170 let receiver_ids = self.store().await.project_connection_ids(
1171 ProjectId::from_proto(request.payload.project_id),
1172 request.sender_id,
1173 )?;
1174 broadcast(request.sender_id, receiver_ids, |connection_id| {
1175 self.peer
1176 .forward_send(request.sender_id, connection_id, request.payload.clone())
1177 });
1178 Ok(())
1179 }
1180
1181 async fn buffer_saved(
1182 self: Arc<Server>,
1183 request: TypedEnvelope<proto::BufferSaved>,
1184 ) -> Result<()> {
1185 let receiver_ids = self.store().await.project_connection_ids(
1186 ProjectId::from_proto(request.payload.project_id),
1187 request.sender_id,
1188 )?;
1189 broadcast(request.sender_id, receiver_ids, |connection_id| {
1190 self.peer
1191 .forward_send(request.sender_id, connection_id, request.payload.clone())
1192 });
1193 Ok(())
1194 }
1195
1196 async fn follow(
1197 self: Arc<Self>,
1198 request: TypedEnvelope<proto::Follow>,
1199 response: Response<proto::Follow>,
1200 ) -> Result<()> {
1201 let project_id = ProjectId::from_proto(request.payload.project_id);
1202 let leader_id = ConnectionId(request.payload.leader_id);
1203 let follower_id = request.sender_id;
1204 {
1205 let mut store = self.store_mut().await;
1206 if !store
1207 .project_connection_ids(project_id, follower_id)?
1208 .contains(&leader_id)
1209 {
1210 Err(anyhow!("no such peer"))?;
1211 }
1212
1213 store.register_project_activity(project_id, follower_id)?;
1214 }
1215
1216 let mut response_payload = self
1217 .peer
1218 .forward_request(request.sender_id, leader_id, request.payload)
1219 .await?;
1220 response_payload
1221 .views
1222 .retain(|view| view.leader_id != Some(follower_id.0));
1223 response.send(response_payload)?;
1224 Ok(())
1225 }
1226
1227 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1228 let project_id = ProjectId::from_proto(request.payload.project_id);
1229 let leader_id = ConnectionId(request.payload.leader_id);
1230 let mut store = self.store_mut().await;
1231 if !store
1232 .project_connection_ids(project_id, request.sender_id)?
1233 .contains(&leader_id)
1234 {
1235 Err(anyhow!("no such peer"))?;
1236 }
1237 store.register_project_activity(project_id, request.sender_id)?;
1238 self.peer
1239 .forward_send(request.sender_id, leader_id, request.payload)?;
1240 Ok(())
1241 }
1242
1243 async fn update_followers(
1244 self: Arc<Self>,
1245 request: TypedEnvelope<proto::UpdateFollowers>,
1246 ) -> Result<()> {
1247 let project_id = ProjectId::from_proto(request.payload.project_id);
1248 let mut store = self.store_mut().await;
1249 store.register_project_activity(project_id, request.sender_id)?;
1250 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1251 let leader_id = request
1252 .payload
1253 .variant
1254 .as_ref()
1255 .and_then(|variant| match variant {
1256 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1257 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1258 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1259 });
1260 for follower_id in &request.payload.follower_ids {
1261 let follower_id = ConnectionId(*follower_id);
1262 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1263 self.peer
1264 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1265 }
1266 }
1267 Ok(())
1268 }
1269
1270 async fn get_channels(
1271 self: Arc<Server>,
1272 request: TypedEnvelope<proto::GetChannels>,
1273 response: Response<proto::GetChannels>,
1274 ) -> Result<()> {
1275 let user_id = self
1276 .store()
1277 .await
1278 .user_id_for_connection(request.sender_id)?;
1279 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1280 response.send(proto::GetChannelsResponse {
1281 channels: channels
1282 .into_iter()
1283 .map(|chan| proto::Channel {
1284 id: chan.id.to_proto(),
1285 name: chan.name,
1286 })
1287 .collect(),
1288 })?;
1289 Ok(())
1290 }
1291
1292 async fn get_users(
1293 self: Arc<Server>,
1294 request: TypedEnvelope<proto::GetUsers>,
1295 response: Response<proto::GetUsers>,
1296 ) -> Result<()> {
1297 let user_ids = request
1298 .payload
1299 .user_ids
1300 .into_iter()
1301 .map(UserId::from_proto)
1302 .collect();
1303 let users = self
1304 .app_state
1305 .db
1306 .get_users_by_ids(user_ids)
1307 .await?
1308 .into_iter()
1309 .map(|user| proto::User {
1310 id: user.id.to_proto(),
1311 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1312 github_login: user.github_login,
1313 })
1314 .collect();
1315 response.send(proto::UsersResponse { users })?;
1316 Ok(())
1317 }
1318
1319 async fn fuzzy_search_users(
1320 self: Arc<Server>,
1321 request: TypedEnvelope<proto::FuzzySearchUsers>,
1322 response: Response<proto::FuzzySearchUsers>,
1323 ) -> Result<()> {
1324 let user_id = self
1325 .store()
1326 .await
1327 .user_id_for_connection(request.sender_id)?;
1328 let query = request.payload.query;
1329 let db = &self.app_state.db;
1330 let users = match query.len() {
1331 0 => vec![],
1332 1 | 2 => db
1333 .get_user_by_github_login(&query)
1334 .await?
1335 .into_iter()
1336 .collect(),
1337 _ => db.fuzzy_search_users(&query, 10).await?,
1338 };
1339 let users = users
1340 .into_iter()
1341 .filter(|user| user.id != user_id)
1342 .map(|user| proto::User {
1343 id: user.id.to_proto(),
1344 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1345 github_login: user.github_login,
1346 })
1347 .collect();
1348 response.send(proto::UsersResponse { users })?;
1349 Ok(())
1350 }
1351
1352 async fn request_contact(
1353 self: Arc<Server>,
1354 request: TypedEnvelope<proto::RequestContact>,
1355 response: Response<proto::RequestContact>,
1356 ) -> Result<()> {
1357 let requester_id = self
1358 .store()
1359 .await
1360 .user_id_for_connection(request.sender_id)?;
1361 let responder_id = UserId::from_proto(request.payload.responder_id);
1362 if requester_id == responder_id {
1363 return Err(anyhow!("cannot add yourself as a contact"))?;
1364 }
1365
1366 self.app_state
1367 .db
1368 .send_contact_request(requester_id, responder_id)
1369 .await?;
1370
1371 // Update outgoing contact requests of requester
1372 let mut update = proto::UpdateContacts::default();
1373 update.outgoing_requests.push(responder_id.to_proto());
1374 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1375 self.peer.send(connection_id, update.clone())?;
1376 }
1377
1378 // Update incoming contact requests of responder
1379 let mut update = proto::UpdateContacts::default();
1380 update
1381 .incoming_requests
1382 .push(proto::IncomingContactRequest {
1383 requester_id: requester_id.to_proto(),
1384 should_notify: true,
1385 });
1386 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1387 self.peer.send(connection_id, update.clone())?;
1388 }
1389
1390 response.send(proto::Ack {})?;
1391 Ok(())
1392 }
1393
1394 async fn respond_to_contact_request(
1395 self: Arc<Server>,
1396 request: TypedEnvelope<proto::RespondToContactRequest>,
1397 response: Response<proto::RespondToContactRequest>,
1398 ) -> Result<()> {
1399 let responder_id = self
1400 .store()
1401 .await
1402 .user_id_for_connection(request.sender_id)?;
1403 let requester_id = UserId::from_proto(request.payload.requester_id);
1404 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1405 self.app_state
1406 .db
1407 .dismiss_contact_notification(responder_id, requester_id)
1408 .await?;
1409 } else {
1410 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1411 self.app_state
1412 .db
1413 .respond_to_contact_request(responder_id, requester_id, accept)
1414 .await?;
1415
1416 let store = self.store().await;
1417 // Update responder with new contact
1418 let mut update = proto::UpdateContacts::default();
1419 if accept {
1420 update
1421 .contacts
1422 .push(store.contact_for_user(requester_id, false));
1423 }
1424 update
1425 .remove_incoming_requests
1426 .push(requester_id.to_proto());
1427 for connection_id in store.connection_ids_for_user(responder_id) {
1428 self.peer.send(connection_id, update.clone())?;
1429 }
1430
1431 // Update requester with new contact
1432 let mut update = proto::UpdateContacts::default();
1433 if accept {
1434 update
1435 .contacts
1436 .push(store.contact_for_user(responder_id, true));
1437 }
1438 update
1439 .remove_outgoing_requests
1440 .push(responder_id.to_proto());
1441 for connection_id in store.connection_ids_for_user(requester_id) {
1442 self.peer.send(connection_id, update.clone())?;
1443 }
1444 }
1445
1446 response.send(proto::Ack {})?;
1447 Ok(())
1448 }
1449
1450 async fn remove_contact(
1451 self: Arc<Server>,
1452 request: TypedEnvelope<proto::RemoveContact>,
1453 response: Response<proto::RemoveContact>,
1454 ) -> Result<()> {
1455 let requester_id = self
1456 .store()
1457 .await
1458 .user_id_for_connection(request.sender_id)?;
1459 let responder_id = UserId::from_proto(request.payload.user_id);
1460 self.app_state
1461 .db
1462 .remove_contact(requester_id, responder_id)
1463 .await?;
1464
1465 // Update outgoing contact requests of requester
1466 let mut update = proto::UpdateContacts::default();
1467 update
1468 .remove_outgoing_requests
1469 .push(responder_id.to_proto());
1470 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1471 self.peer.send(connection_id, update.clone())?;
1472 }
1473
1474 // Update incoming contact requests of responder
1475 let mut update = proto::UpdateContacts::default();
1476 update
1477 .remove_incoming_requests
1478 .push(requester_id.to_proto());
1479 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1480 self.peer.send(connection_id, update.clone())?;
1481 }
1482
1483 response.send(proto::Ack {})?;
1484 Ok(())
1485 }
1486
1487 async fn join_channel(
1488 self: Arc<Self>,
1489 request: TypedEnvelope<proto::JoinChannel>,
1490 response: Response<proto::JoinChannel>,
1491 ) -> Result<()> {
1492 let user_id = self
1493 .store()
1494 .await
1495 .user_id_for_connection(request.sender_id)?;
1496 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1497 if !self
1498 .app_state
1499 .db
1500 .can_user_access_channel(user_id, channel_id)
1501 .await?
1502 {
1503 Err(anyhow!("access denied"))?;
1504 }
1505
1506 self.store_mut()
1507 .await
1508 .join_channel(request.sender_id, channel_id);
1509 let messages = self
1510 .app_state
1511 .db
1512 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1513 .await?
1514 .into_iter()
1515 .map(|msg| proto::ChannelMessage {
1516 id: msg.id.to_proto(),
1517 body: msg.body,
1518 timestamp: msg.sent_at.unix_timestamp() as u64,
1519 sender_id: msg.sender_id.to_proto(),
1520 nonce: Some(msg.nonce.as_u128().into()),
1521 })
1522 .collect::<Vec<_>>();
1523 response.send(proto::JoinChannelResponse {
1524 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1525 messages,
1526 })?;
1527 Ok(())
1528 }
1529
1530 async fn leave_channel(
1531 self: Arc<Self>,
1532 request: TypedEnvelope<proto::LeaveChannel>,
1533 ) -> Result<()> {
1534 let user_id = self
1535 .store()
1536 .await
1537 .user_id_for_connection(request.sender_id)?;
1538 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1539 if !self
1540 .app_state
1541 .db
1542 .can_user_access_channel(user_id, channel_id)
1543 .await?
1544 {
1545 Err(anyhow!("access denied"))?;
1546 }
1547
1548 self.store_mut()
1549 .await
1550 .leave_channel(request.sender_id, channel_id);
1551
1552 Ok(())
1553 }
1554
1555 async fn send_channel_message(
1556 self: Arc<Self>,
1557 request: TypedEnvelope<proto::SendChannelMessage>,
1558 response: Response<proto::SendChannelMessage>,
1559 ) -> Result<()> {
1560 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1561 let user_id;
1562 let connection_ids;
1563 {
1564 let state = self.store().await;
1565 user_id = state.user_id_for_connection(request.sender_id)?;
1566 connection_ids = state.channel_connection_ids(channel_id)?;
1567 }
1568
1569 // Validate the message body.
1570 let body = request.payload.body.trim().to_string();
1571 if body.len() > MAX_MESSAGE_LEN {
1572 return Err(anyhow!("message is too long"))?;
1573 }
1574 if body.is_empty() {
1575 return Err(anyhow!("message can't be blank"))?;
1576 }
1577
1578 let timestamp = OffsetDateTime::now_utc();
1579 let nonce = request
1580 .payload
1581 .nonce
1582 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1583
1584 let message_id = self
1585 .app_state
1586 .db
1587 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1588 .await?
1589 .to_proto();
1590 let message = proto::ChannelMessage {
1591 sender_id: user_id.to_proto(),
1592 id: message_id,
1593 body,
1594 timestamp: timestamp.unix_timestamp() as u64,
1595 nonce: Some(nonce),
1596 };
1597 broadcast(request.sender_id, connection_ids, |conn_id| {
1598 self.peer.send(
1599 conn_id,
1600 proto::ChannelMessageSent {
1601 channel_id: channel_id.to_proto(),
1602 message: Some(message.clone()),
1603 },
1604 )
1605 });
1606 response.send(proto::SendChannelMessageResponse {
1607 message: Some(message),
1608 })?;
1609 Ok(())
1610 }
1611
1612 async fn get_channel_messages(
1613 self: Arc<Self>,
1614 request: TypedEnvelope<proto::GetChannelMessages>,
1615 response: Response<proto::GetChannelMessages>,
1616 ) -> Result<()> {
1617 let user_id = self
1618 .store()
1619 .await
1620 .user_id_for_connection(request.sender_id)?;
1621 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1622 if !self
1623 .app_state
1624 .db
1625 .can_user_access_channel(user_id, channel_id)
1626 .await?
1627 {
1628 Err(anyhow!("access denied"))?;
1629 }
1630
1631 let messages = self
1632 .app_state
1633 .db
1634 .get_channel_messages(
1635 channel_id,
1636 MESSAGE_COUNT_PER_PAGE,
1637 Some(MessageId::from_proto(request.payload.before_message_id)),
1638 )
1639 .await?
1640 .into_iter()
1641 .map(|msg| proto::ChannelMessage {
1642 id: msg.id.to_proto(),
1643 body: msg.body,
1644 timestamp: msg.sent_at.unix_timestamp() as u64,
1645 sender_id: msg.sender_id.to_proto(),
1646 nonce: Some(msg.nonce.as_u128().into()),
1647 })
1648 .collect::<Vec<_>>();
1649 response.send(proto::GetChannelMessagesResponse {
1650 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1651 messages,
1652 })?;
1653 Ok(())
1654 }
1655
1656 async fn store<'a>(self: &'a Arc<Self>) -> StoreReadGuard<'a> {
1657 #[cfg(test)]
1658 tokio::task::yield_now().await;
1659 let guard = self.store.read().await;
1660 #[cfg(test)]
1661 tokio::task::yield_now().await;
1662 StoreReadGuard {
1663 guard,
1664 _not_send: PhantomData,
1665 }
1666 }
1667
1668 async fn store_mut<'a>(self: &'a Arc<Self>) -> StoreWriteGuard<'a> {
1669 #[cfg(test)]
1670 tokio::task::yield_now().await;
1671 let guard = self.store.write().await;
1672 #[cfg(test)]
1673 tokio::task::yield_now().await;
1674 StoreWriteGuard {
1675 guard,
1676 _not_send: PhantomData,
1677 }
1678 }
1679
1680 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1681 ServerSnapshot {
1682 store: self.store.read().await,
1683 peer: &self.peer,
1684 }
1685 }
1686}
1687
1688impl<'a> Deref for StoreReadGuard<'a> {
1689 type Target = Store;
1690
1691 fn deref(&self) -> &Self::Target {
1692 &*self.guard
1693 }
1694}
1695
1696impl<'a> Deref for StoreWriteGuard<'a> {
1697 type Target = Store;
1698
1699 fn deref(&self) -> &Self::Target {
1700 &*self.guard
1701 }
1702}
1703
1704impl<'a> DerefMut for StoreWriteGuard<'a> {
1705 fn deref_mut(&mut self) -> &mut Self::Target {
1706 &mut *self.guard
1707 }
1708}
1709
1710impl<'a> Drop for StoreWriteGuard<'a> {
1711 fn drop(&mut self) {
1712 #[cfg(test)]
1713 self.check_invariants();
1714 }
1715}
1716
1717impl Executor for RealExecutor {
1718 type Sleep = Sleep;
1719
1720 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1721 tokio::task::spawn(future);
1722 }
1723
1724 fn sleep(&self, duration: Duration) -> Self::Sleep {
1725 tokio::time::sleep(duration)
1726 }
1727}
1728
1729fn broadcast<F>(
1730 sender_id: ConnectionId,
1731 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1732 mut f: F,
1733) where
1734 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1735{
1736 for receiver_id in receiver_ids {
1737 if receiver_id != sender_id {
1738 f(receiver_id).trace_err();
1739 }
1740 }
1741}
1742
1743lazy_static! {
1744 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1745}
1746
1747pub struct ProtocolVersion(u32);
1748
1749impl Header for ProtocolVersion {
1750 fn name() -> &'static HeaderName {
1751 &ZED_PROTOCOL_VERSION
1752 }
1753
1754 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1755 where
1756 Self: Sized,
1757 I: Iterator<Item = &'i axum::http::HeaderValue>,
1758 {
1759 let version = values
1760 .next()
1761 .ok_or_else(|| axum::headers::Error::invalid())?
1762 .to_str()
1763 .map_err(|_| axum::headers::Error::invalid())?
1764 .parse()
1765 .map_err(|_| axum::headers::Error::invalid())?;
1766 Ok(Self(version))
1767 }
1768
1769 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1770 values.extend([self.0.to_string().parse().unwrap()]);
1771 }
1772}
1773
1774pub fn routes(server: Arc<Server>) -> Router<Body> {
1775 Router::new()
1776 .route("/rpc", get(handle_websocket_request))
1777 .layer(
1778 ServiceBuilder::new()
1779 .layer(Extension(server.app_state.clone()))
1780 .layer(middleware::from_fn(auth::validate_header)),
1781 )
1782 .route("/metrics", get(handle_metrics))
1783 .layer(Extension(server))
1784}
1785
1786pub async fn handle_websocket_request(
1787 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1788 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1789 Extension(server): Extension<Arc<Server>>,
1790 Extension(user): Extension<User>,
1791 ws: WebSocketUpgrade,
1792) -> axum::response::Response {
1793 if protocol_version != rpc::PROTOCOL_VERSION {
1794 return (
1795 StatusCode::UPGRADE_REQUIRED,
1796 "client must be upgraded".to_string(),
1797 )
1798 .into_response();
1799 }
1800 let socket_address = socket_address.to_string();
1801 ws.on_upgrade(move |socket| {
1802 use util::ResultExt;
1803 let socket = socket
1804 .map_ok(to_tungstenite_message)
1805 .err_into()
1806 .with(|message| async move { Ok(to_axum_message(message)) });
1807 let connection = Connection::new(Box::pin(socket));
1808 async move {
1809 server
1810 .handle_connection(connection, socket_address, user, None, RealExecutor)
1811 .await
1812 .log_err();
1813 }
1814 })
1815}
1816
1817pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1818 // We call `store_mut` here for its side effects of updating metrics.
1819 let metrics = server.store().await.metrics();
1820 METRIC_CONNECTIONS.set(metrics.connections as _);
1821 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1822 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1823 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1824
1825 let encoder = prometheus::TextEncoder::new();
1826 let metric_families = prometheus::gather();
1827 match encoder.encode_to_string(&metric_families) {
1828 Ok(string) => (StatusCode::OK, string).into_response(),
1829 Err(error) => (
1830 StatusCode::INTERNAL_SERVER_ERROR,
1831 format!("failed to encode metrics {:?}", error),
1832 )
1833 .into_response(),
1834 }
1835}
1836
1837fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1838 match message {
1839 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1840 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1841 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1842 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1843 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1844 code: frame.code.into(),
1845 reason: frame.reason,
1846 })),
1847 }
1848}
1849
1850fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1851 match message {
1852 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1853 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1854 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1855 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1856 AxumMessage::Close(frame) => {
1857 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1858 code: frame.code.into(),
1859 reason: frame.reason,
1860 }))
1861 }
1862 }
1863}
1864
1865pub trait ResultExt {
1866 type Ok;
1867
1868 fn trace_err(self) -> Option<Self::Ok>;
1869}
1870
1871impl<T, E> ResultExt for Result<T, E>
1872where
1873 E: std::fmt::Debug,
1874{
1875 type Ok = T;
1876
1877 fn trace_err(self) -> Option<T> {
1878 match self {
1879 Ok(value) => Some(value),
1880 Err(error) => {
1881 tracing::error!("{:?}", error);
1882 None
1883 }
1884 }
1885 }
1886}