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::update_worktree_extensions)
168 .add_message_handler(Server::start_language_server)
169 .add_message_handler(Server::update_language_server)
170 .add_message_handler(Server::update_diagnostic_summary)
171 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
172 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
173 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
174 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
175 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
176 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
177 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
178 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
179 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
180 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
181 .add_request_handler(
182 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
183 )
184 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
185 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
186 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
187 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
188 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
189 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
190 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
191 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
192 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
193 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
194 .add_request_handler(Server::update_buffer)
195 .add_message_handler(Server::update_buffer_file)
196 .add_message_handler(Server::buffer_reloaded)
197 .add_message_handler(Server::buffer_saved)
198 .add_request_handler(Server::save_buffer)
199 .add_request_handler(Server::get_channels)
200 .add_request_handler(Server::get_users)
201 .add_request_handler(Server::fuzzy_search_users)
202 .add_request_handler(Server::request_contact)
203 .add_request_handler(Server::remove_contact)
204 .add_request_handler(Server::respond_to_contact_request)
205 .add_request_handler(Server::join_channel)
206 .add_message_handler(Server::leave_channel)
207 .add_request_handler(Server::send_channel_message)
208 .add_request_handler(Server::follow)
209 .add_message_handler(Server::unfollow)
210 .add_message_handler(Server::update_followers)
211 .add_request_handler(Server::get_channel_messages);
212
213 Arc::new(server)
214 }
215
216 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
217 where
218 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
219 Fut: 'static + Send + Future<Output = Result<()>>,
220 M: EnvelopedMessage,
221 {
222 let prev_handler = self.handlers.insert(
223 TypeId::of::<M>(),
224 Box::new(move |server, envelope| {
225 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
226 let span = info_span!(
227 "handle message",
228 payload_type = envelope.payload_type_name()
229 );
230 span.in_scope(|| {
231 tracing::info!(
232 payload_type = envelope.payload_type_name(),
233 "message received"
234 );
235 });
236 let future = (handler)(server, *envelope);
237 async move {
238 if let Err(error) = future.await {
239 tracing::error!(%error, "error handling message");
240 }
241 }
242 .instrument(span)
243 .boxed()
244 }),
245 );
246 if prev_handler.is_some() {
247 panic!("registered a handler for the same message twice");
248 }
249 self
250 }
251
252 /// Handle a request while holding a lock to the store. This is useful when we're registering
253 /// a connection but we want to respond on the connection before anybody else can send on it.
254 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
255 where
256 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
257 Fut: Send + Future<Output = Result<()>>,
258 M: RequestMessage,
259 {
260 let handler = Arc::new(handler);
261 self.add_message_handler(move |server, envelope| {
262 let receipt = envelope.receipt();
263 let handler = handler.clone();
264 async move {
265 let responded = Arc::new(AtomicBool::default());
266 let response = Response {
267 server: server.clone(),
268 responded: responded.clone(),
269 receipt: envelope.receipt(),
270 };
271 match (handler)(server.clone(), envelope, response).await {
272 Ok(()) => {
273 if responded.load(std::sync::atomic::Ordering::SeqCst) {
274 Ok(())
275 } else {
276 Err(anyhow!("handler did not send a response"))?
277 }
278 }
279 Err(error) => {
280 server.peer.respond_with_error(
281 receipt,
282 proto::Error {
283 message: error.to_string(),
284 },
285 )?;
286 Err(error)
287 }
288 }
289 }
290 })
291 }
292
293 /// Start a long lived task that records which users are active in which projects.
294 pub fn start_recording_project_activity<E: 'static + Executor>(
295 self: &Arc<Self>,
296 interval: Duration,
297 executor: E,
298 ) {
299 executor.spawn_detached({
300 let this = Arc::downgrade(self);
301 let executor = executor.clone();
302 async move {
303 let mut period_start = OffsetDateTime::now_utc();
304 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
305 loop {
306 let sleep = executor.sleep(interval);
307 sleep.await;
308 let this = if let Some(this) = this.upgrade() {
309 this
310 } else {
311 break;
312 };
313
314 active_projects.clear();
315 active_projects.extend(this.store().await.projects().flat_map(
316 |(project_id, project)| {
317 project.guests.values().chain([&project.host]).filter_map(
318 |collaborator| {
319 if !collaborator.admin
320 && collaborator
321 .last_activity
322 .map_or(false, |activity| activity > period_start)
323 {
324 Some((collaborator.user_id, *project_id))
325 } else {
326 None
327 }
328 },
329 )
330 },
331 ));
332
333 let period_end = OffsetDateTime::now_utc();
334 this.app_state
335 .db
336 .record_user_activity(period_start..period_end, &active_projects)
337 .await
338 .trace_err();
339 period_start = period_end;
340 }
341 }
342 });
343 }
344
345 pub fn handle_connection<E: Executor>(
346 self: &Arc<Self>,
347 connection: Connection,
348 address: String,
349 user: User,
350 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
351 executor: E,
352 ) -> impl Future<Output = Result<()>> {
353 let mut this = self.clone();
354 let user_id = user.id;
355 let login = user.github_login;
356 let span = info_span!("handle connection", %user_id, %login, %address);
357 async move {
358 let (connection_id, handle_io, mut incoming_rx) = this
359 .peer
360 .add_connection(connection, {
361 let executor = executor.clone();
362 move |duration| {
363 let timer = executor.sleep(duration);
364 async move {
365 timer.await;
366 }
367 }
368 })
369 .await;
370
371 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
372
373 if let Some(send_connection_id) = send_connection_id.as_mut() {
374 let _ = send_connection_id.send(connection_id).await;
375 }
376
377 if !user.connected_once {
378 this.peer.send(connection_id, proto::ShowContacts {})?;
379 this.app_state.db.set_user_connected_once(user_id, true).await?;
380 }
381
382 let (contacts, invite_code) = future::try_join(
383 this.app_state.db.get_contacts(user_id),
384 this.app_state.db.get_invite_code_for_user(user_id)
385 ).await?;
386
387 {
388 let mut store = this.store_mut().await;
389 store.add_connection(connection_id, user_id, user.admin);
390 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
391
392 if let Some((code, count)) = invite_code {
393 this.peer.send(connection_id, proto::UpdateInviteInfo {
394 url: format!("{}{}", this.app_state.invite_link_prefix, code),
395 count,
396 })?;
397 }
398 }
399 this.update_user_contacts(user_id).await?;
400
401 let handle_io = handle_io.fuse();
402 futures::pin_mut!(handle_io);
403
404 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
405 // This prevents deadlocks when e.g., client A performs a request to client B and
406 // client B performs a request to client A. If both clients stop processing further
407 // messages until their respective request completes, they won't have a chance to
408 // respond to the other client's request and cause a deadlock.
409 //
410 // This arrangement ensures we will attempt to process earlier messages first, but fall
411 // back to processing messages arrived later in the spirit of making progress.
412 let mut foreground_message_handlers = FuturesUnordered::new();
413 loop {
414 let next_message = incoming_rx.next().fuse();
415 futures::pin_mut!(next_message);
416 futures::select_biased! {
417 result = handle_io => {
418 if let Err(error) = result {
419 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
420 }
421 break;
422 }
423 _ = foreground_message_handlers.next() => {}
424 message = next_message => {
425 if let Some(message) = message {
426 let type_name = message.payload_type_name();
427 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
428 let span_enter = span.enter();
429 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
430 let notifications = this.notifications.clone();
431 let is_background = message.is_background();
432 let handle_message = (handler)(this.clone(), message);
433
434 drop(span_enter);
435 let handle_message = async move {
436 handle_message.await;
437 if let Some(mut notifications) = notifications {
438 let _ = notifications.send(()).await;
439 }
440 }.instrument(span);
441
442 if is_background {
443 executor.spawn_detached(handle_message);
444 } else {
445 foreground_message_handlers.push(handle_message);
446 }
447 } else {
448 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
449 }
450 } else {
451 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
452 break;
453 }
454 }
455 }
456 }
457
458 drop(foreground_message_handlers);
459 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
460 if let Err(error) = this.sign_out(connection_id).await {
461 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
462 }
463
464 Ok(())
465 }.instrument(span)
466 }
467
468 #[instrument(skip(self), err)]
469 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
470 self.peer.disconnect(connection_id);
471
472 let mut projects_to_unregister = Vec::new();
473 let removed_user_id;
474 {
475 let mut store = self.store_mut().await;
476 let removed_connection = store.remove_connection(connection_id)?;
477
478 for (project_id, project) in removed_connection.hosted_projects {
479 projects_to_unregister.push(project_id);
480 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
481 self.peer.send(
482 conn_id,
483 proto::UnregisterProject {
484 project_id: project_id.to_proto(),
485 },
486 )
487 });
488
489 for (_, receipts) in project.join_requests {
490 for receipt in receipts {
491 self.peer.respond(
492 receipt,
493 proto::JoinProjectResponse {
494 variant: Some(proto::join_project_response::Variant::Decline(
495 proto::join_project_response::Decline {
496 reason: proto::join_project_response::decline::Reason::WentOffline as i32
497 },
498 )),
499 },
500 )?;
501 }
502 }
503 }
504
505 for project_id in removed_connection.guest_project_ids {
506 if let Some(project) = store.project(project_id).trace_err() {
507 broadcast(connection_id, project.connection_ids(), |conn_id| {
508 self.peer.send(
509 conn_id,
510 proto::RemoveProjectCollaborator {
511 project_id: project_id.to_proto(),
512 peer_id: connection_id.0,
513 },
514 )
515 });
516 if project.guests.is_empty() {
517 self.peer
518 .send(
519 project.host_connection_id,
520 proto::ProjectUnshared {
521 project_id: project_id.to_proto(),
522 },
523 )
524 .trace_err();
525 }
526 }
527 }
528
529 removed_user_id = removed_connection.user_id;
530 };
531
532 self.update_user_contacts(removed_user_id).await.trace_err();
533
534 for project_id in projects_to_unregister {
535 self.app_state
536 .db
537 .unregister_project(project_id)
538 .await
539 .trace_err();
540 }
541
542 Ok(())
543 }
544
545 pub async fn invite_code_redeemed(
546 self: &Arc<Self>,
547 code: &str,
548 invitee_id: UserId,
549 ) -> Result<()> {
550 let user = self.app_state.db.get_user_for_invite_code(code).await?;
551 let store = self.store().await;
552 let invitee_contact = store.contact_for_user(invitee_id, true);
553 for connection_id in store.connection_ids_for_user(user.id) {
554 self.peer.send(
555 connection_id,
556 proto::UpdateContacts {
557 contacts: vec![invitee_contact.clone()],
558 ..Default::default()
559 },
560 )?;
561 self.peer.send(
562 connection_id,
563 proto::UpdateInviteInfo {
564 url: format!("{}{}", self.app_state.invite_link_prefix, code),
565 count: user.invite_count as u32,
566 },
567 )?;
568 }
569 Ok(())
570 }
571
572 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
573 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
574 if let Some(invite_code) = &user.invite_code {
575 let store = self.store().await;
576 for connection_id in store.connection_ids_for_user(user_id) {
577 self.peer.send(
578 connection_id,
579 proto::UpdateInviteInfo {
580 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
581 count: user.invite_count as u32,
582 },
583 )?;
584 }
585 }
586 }
587 Ok(())
588 }
589
590 async fn ping(
591 self: Arc<Server>,
592 _: TypedEnvelope<proto::Ping>,
593 response: Response<proto::Ping>,
594 ) -> Result<()> {
595 response.send(proto::Ack {})?;
596 Ok(())
597 }
598
599 async fn register_project(
600 self: Arc<Server>,
601 request: TypedEnvelope<proto::RegisterProject>,
602 response: Response<proto::RegisterProject>,
603 ) -> Result<()> {
604 let user_id = self
605 .store()
606 .await
607 .user_id_for_connection(request.sender_id)?;
608 let project_id = self.app_state.db.register_project(user_id).await?;
609 self.store_mut().await.register_project(
610 request.sender_id,
611 project_id,
612 request.payload.online,
613 )?;
614
615 response.send(proto::RegisterProjectResponse {
616 project_id: project_id.to_proto(),
617 })?;
618
619 Ok(())
620 }
621
622 async fn unregister_project(
623 self: Arc<Server>,
624 request: TypedEnvelope<proto::UnregisterProject>,
625 response: Response<proto::UnregisterProject>,
626 ) -> Result<()> {
627 let project_id = ProjectId::from_proto(request.payload.project_id);
628 let (user_id, project) = {
629 let mut state = self.store_mut().await;
630 let project = state.unregister_project(project_id, request.sender_id)?;
631 (state.user_id_for_connection(request.sender_id)?, project)
632 };
633 self.app_state.db.unregister_project(project_id).await?;
634
635 broadcast(
636 request.sender_id,
637 project.guests.keys().copied(),
638 |conn_id| {
639 self.peer.send(
640 conn_id,
641 proto::UnregisterProject {
642 project_id: project_id.to_proto(),
643 },
644 )
645 },
646 );
647 for (_, receipts) in project.join_requests {
648 for receipt in receipts {
649 self.peer.respond(
650 receipt,
651 proto::JoinProjectResponse {
652 variant: Some(proto::join_project_response::Variant::Decline(
653 proto::join_project_response::Decline {
654 reason: proto::join_project_response::decline::Reason::Closed
655 as i32,
656 },
657 )),
658 },
659 )?;
660 }
661 }
662
663 // Send out the `UpdateContacts` message before responding to the unregister
664 // request. This way, when the project's host can keep track of the project's
665 // remote id until after they've received the `UpdateContacts` message for
666 // themself.
667 self.update_user_contacts(user_id).await?;
668 response.send(proto::Ack {})?;
669
670 Ok(())
671 }
672
673 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
674 let contacts = self.app_state.db.get_contacts(user_id).await?;
675 let store = self.store().await;
676 let updated_contact = store.contact_for_user(user_id, false);
677 for contact in contacts {
678 if let db::Contact::Accepted {
679 user_id: contact_user_id,
680 ..
681 } = contact
682 {
683 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
684 self.peer
685 .send(
686 contact_conn_id,
687 proto::UpdateContacts {
688 contacts: vec![updated_contact.clone()],
689 remove_contacts: Default::default(),
690 incoming_requests: Default::default(),
691 remove_incoming_requests: Default::default(),
692 outgoing_requests: Default::default(),
693 remove_outgoing_requests: Default::default(),
694 },
695 )
696 .trace_err();
697 }
698 }
699 }
700 Ok(())
701 }
702
703 async fn join_project(
704 self: Arc<Server>,
705 request: TypedEnvelope<proto::JoinProject>,
706 response: Response<proto::JoinProject>,
707 ) -> Result<()> {
708 let project_id = ProjectId::from_proto(request.payload.project_id);
709
710 let host_user_id;
711 let guest_user_id;
712 let host_connection_id;
713 {
714 let state = self.store().await;
715 let project = state.project(project_id)?;
716 host_user_id = project.host.user_id;
717 host_connection_id = project.host_connection_id;
718 guest_user_id = state.user_id_for_connection(request.sender_id)?;
719 };
720
721 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
722 let has_contact = self
723 .app_state
724 .db
725 .has_contact(guest_user_id, host_user_id)
726 .await?;
727 if !has_contact {
728 return Err(anyhow!("no such project"))?;
729 }
730
731 self.store_mut().await.request_join_project(
732 guest_user_id,
733 project_id,
734 response.into_receipt(),
735 )?;
736 self.peer.send(
737 host_connection_id,
738 proto::RequestJoinProject {
739 project_id: project_id.to_proto(),
740 requester_id: guest_user_id.to_proto(),
741 },
742 )?;
743 Ok(())
744 }
745
746 async fn respond_to_join_project_request(
747 self: Arc<Server>,
748 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
749 ) -> Result<()> {
750 let host_user_id;
751
752 {
753 let mut state = self.store_mut().await;
754 let project_id = ProjectId::from_proto(request.payload.project_id);
755 let project = state.project(project_id)?;
756 if project.host_connection_id != request.sender_id {
757 Err(anyhow!("no such connection"))?;
758 }
759
760 host_user_id = project.host.user_id;
761 let guest_user_id = UserId::from_proto(request.payload.requester_id);
762
763 if !request.payload.allow {
764 let receipts = state
765 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
766 .ok_or_else(|| anyhow!("no such request"))?;
767 for receipt in receipts {
768 self.peer.respond(
769 receipt,
770 proto::JoinProjectResponse {
771 variant: Some(proto::join_project_response::Variant::Decline(
772 proto::join_project_response::Decline {
773 reason: proto::join_project_response::decline::Reason::Declined
774 as i32,
775 },
776 )),
777 },
778 )?;
779 }
780 return Ok(());
781 }
782
783 let (receipts_with_replica_ids, project) = state
784 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
785 .ok_or_else(|| anyhow!("no such request"))?;
786
787 let peer_count = project.guests.len();
788 let mut collaborators = Vec::with_capacity(peer_count);
789 collaborators.push(proto::Collaborator {
790 peer_id: project.host_connection_id.0,
791 replica_id: 0,
792 user_id: project.host.user_id.to_proto(),
793 });
794 let worktrees = project
795 .worktrees
796 .iter()
797 .filter_map(|(id, shared_worktree)| {
798 let worktree = project.worktrees.get(&id)?;
799 Some(proto::Worktree {
800 id: *id,
801 root_name: worktree.root_name.clone(),
802 entries: shared_worktree.entries.values().cloned().collect(),
803 diagnostic_summaries: shared_worktree
804 .diagnostic_summaries
805 .values()
806 .cloned()
807 .collect(),
808 visible: worktree.visible,
809 scan_id: shared_worktree.scan_id,
810 })
811 })
812 .collect::<Vec<_>>();
813
814 // Add all guests other than the requesting user's own connections as collaborators
815 for (guest_conn_id, guest) in &project.guests {
816 if receipts_with_replica_ids
817 .iter()
818 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
819 {
820 collaborators.push(proto::Collaborator {
821 peer_id: guest_conn_id.0,
822 replica_id: guest.replica_id as u32,
823 user_id: guest.user_id.to_proto(),
824 });
825 }
826 }
827
828 for conn_id in project.connection_ids() {
829 for (receipt, replica_id) in &receipts_with_replica_ids {
830 if conn_id != receipt.sender_id {
831 self.peer.send(
832 conn_id,
833 proto::AddProjectCollaborator {
834 project_id: project_id.to_proto(),
835 collaborator: Some(proto::Collaborator {
836 peer_id: receipt.sender_id.0,
837 replica_id: *replica_id as u32,
838 user_id: guest_user_id.to_proto(),
839 }),
840 },
841 )?;
842 }
843 }
844 }
845
846 for (receipt, replica_id) in receipts_with_replica_ids {
847 self.peer.respond(
848 receipt,
849 proto::JoinProjectResponse {
850 variant: Some(proto::join_project_response::Variant::Accept(
851 proto::join_project_response::Accept {
852 worktrees: worktrees.clone(),
853 replica_id: replica_id as u32,
854 collaborators: collaborators.clone(),
855 language_servers: project.language_servers.clone(),
856 },
857 )),
858 },
859 )?;
860 }
861 }
862
863 self.update_user_contacts(host_user_id).await?;
864 Ok(())
865 }
866
867 async fn leave_project(
868 self: Arc<Server>,
869 request: TypedEnvelope<proto::LeaveProject>,
870 ) -> Result<()> {
871 let sender_id = request.sender_id;
872 let project_id = ProjectId::from_proto(request.payload.project_id);
873 let project;
874 {
875 let mut store = self.store_mut().await;
876 project = store.leave_project(sender_id, project_id)?;
877 tracing::info!(
878 %project_id,
879 host_user_id = %project.host_user_id,
880 host_connection_id = %project.host_connection_id,
881 "leave project"
882 );
883
884 if project.remove_collaborator {
885 broadcast(sender_id, project.connection_ids, |conn_id| {
886 self.peer.send(
887 conn_id,
888 proto::RemoveProjectCollaborator {
889 project_id: project_id.to_proto(),
890 peer_id: sender_id.0,
891 },
892 )
893 });
894 }
895
896 if let Some(requester_id) = project.cancel_request {
897 self.peer.send(
898 project.host_connection_id,
899 proto::JoinProjectRequestCancelled {
900 project_id: project_id.to_proto(),
901 requester_id: requester_id.to_proto(),
902 },
903 )?;
904 }
905
906 if project.unshare {
907 self.peer.send(
908 project.host_connection_id,
909 proto::ProjectUnshared {
910 project_id: project_id.to_proto(),
911 },
912 )?;
913 }
914 }
915 self.update_user_contacts(project.host_user_id).await?;
916 Ok(())
917 }
918
919 async fn update_project(
920 self: Arc<Server>,
921 request: TypedEnvelope<proto::UpdateProject>,
922 ) -> Result<()> {
923 let project_id = ProjectId::from_proto(request.payload.project_id);
924 let user_id;
925 {
926 let mut state = self.store_mut().await;
927 user_id = state.user_id_for_connection(request.sender_id)?;
928 let guest_connection_ids = state
929 .read_project(project_id, request.sender_id)?
930 .guest_connection_ids();
931 let unshared_project = state.update_project(
932 project_id,
933 &request.payload.worktrees,
934 request.payload.online,
935 request.sender_id,
936 )?;
937
938 if let Some(unshared_project) = unshared_project {
939 broadcast(
940 request.sender_id,
941 unshared_project.guests.keys().copied(),
942 |conn_id| {
943 self.peer.send(
944 conn_id,
945 proto::UnregisterProject {
946 project_id: project_id.to_proto(),
947 },
948 )
949 },
950 );
951 for (_, receipts) in unshared_project.pending_join_requests {
952 for receipt in receipts {
953 self.peer.respond(
954 receipt,
955 proto::JoinProjectResponse {
956 variant: Some(proto::join_project_response::Variant::Decline(
957 proto::join_project_response::Decline {
958 reason:
959 proto::join_project_response::decline::Reason::Closed
960 as i32,
961 },
962 )),
963 },
964 )?;
965 }
966 }
967 } else {
968 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
969 self.peer.forward_send(
970 request.sender_id,
971 connection_id,
972 request.payload.clone(),
973 )
974 });
975 }
976 };
977
978 self.update_user_contacts(user_id).await?;
979 Ok(())
980 }
981
982 async fn register_project_activity(
983 self: Arc<Server>,
984 request: TypedEnvelope<proto::RegisterProjectActivity>,
985 ) -> Result<()> {
986 self.store_mut().await.register_project_activity(
987 ProjectId::from_proto(request.payload.project_id),
988 request.sender_id,
989 )?;
990 Ok(())
991 }
992
993 async fn update_worktree(
994 self: Arc<Server>,
995 request: TypedEnvelope<proto::UpdateWorktree>,
996 response: Response<proto::UpdateWorktree>,
997 ) -> Result<()> {
998 let project_id = ProjectId::from_proto(request.payload.project_id);
999 let worktree_id = request.payload.worktree_id;
1000 let (connection_ids, metadata_changed) = {
1001 let mut store = self.store_mut().await;
1002 let (connection_ids, metadata_changed) = store.update_worktree(
1003 request.sender_id,
1004 project_id,
1005 worktree_id,
1006 &request.payload.root_name,
1007 &request.payload.removed_entries,
1008 &request.payload.updated_entries,
1009 request.payload.scan_id,
1010 )?;
1011 (connection_ids, metadata_changed)
1012 };
1013
1014 broadcast(request.sender_id, connection_ids, |connection_id| {
1015 self.peer
1016 .forward_send(request.sender_id, connection_id, request.payload.clone())
1017 });
1018 if metadata_changed {
1019 let user_id = self
1020 .store()
1021 .await
1022 .user_id_for_connection(request.sender_id)?;
1023 self.update_user_contacts(user_id).await?;
1024 }
1025 response.send(proto::Ack {})?;
1026 Ok(())
1027 }
1028
1029 async fn update_worktree_extensions(
1030 self: Arc<Server>,
1031 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1032 ) -> Result<()> {
1033 let project_id = ProjectId::from_proto(request.payload.project_id);
1034 let worktree_id = request.payload.worktree_id;
1035 let extensions = request
1036 .payload
1037 .extensions
1038 .into_iter()
1039 .zip(request.payload.counts)
1040 .collect();
1041 self.app_state
1042 .db
1043 .update_worktree_extensions(project_id, worktree_id, extensions)
1044 .await?;
1045 Ok(())
1046 }
1047
1048 async fn update_diagnostic_summary(
1049 self: Arc<Server>,
1050 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1051 ) -> Result<()> {
1052 let summary = request
1053 .payload
1054 .summary
1055 .clone()
1056 .ok_or_else(|| anyhow!("invalid summary"))?;
1057 let receiver_ids = self.store_mut().await.update_diagnostic_summary(
1058 ProjectId::from_proto(request.payload.project_id),
1059 request.payload.worktree_id,
1060 request.sender_id,
1061 summary,
1062 )?;
1063
1064 broadcast(request.sender_id, receiver_ids, |connection_id| {
1065 self.peer
1066 .forward_send(request.sender_id, connection_id, request.payload.clone())
1067 });
1068 Ok(())
1069 }
1070
1071 async fn start_language_server(
1072 self: Arc<Server>,
1073 request: TypedEnvelope<proto::StartLanguageServer>,
1074 ) -> Result<()> {
1075 let receiver_ids = self.store_mut().await.start_language_server(
1076 ProjectId::from_proto(request.payload.project_id),
1077 request.sender_id,
1078 request
1079 .payload
1080 .server
1081 .clone()
1082 .ok_or_else(|| anyhow!("invalid language server"))?,
1083 )?;
1084 broadcast(request.sender_id, receiver_ids, |connection_id| {
1085 self.peer
1086 .forward_send(request.sender_id, connection_id, request.payload.clone())
1087 });
1088 Ok(())
1089 }
1090
1091 async fn update_language_server(
1092 self: Arc<Server>,
1093 request: TypedEnvelope<proto::UpdateLanguageServer>,
1094 ) -> Result<()> {
1095 let receiver_ids = self.store().await.project_connection_ids(
1096 ProjectId::from_proto(request.payload.project_id),
1097 request.sender_id,
1098 )?;
1099 broadcast(request.sender_id, receiver_ids, |connection_id| {
1100 self.peer
1101 .forward_send(request.sender_id, connection_id, request.payload.clone())
1102 });
1103 Ok(())
1104 }
1105
1106 async fn forward_project_request<T>(
1107 self: Arc<Server>,
1108 request: TypedEnvelope<T>,
1109 response: Response<T>,
1110 ) -> Result<()>
1111 where
1112 T: EntityMessage + RequestMessage,
1113 {
1114 let host_connection_id = self
1115 .store()
1116 .await
1117 .read_project(
1118 ProjectId::from_proto(request.payload.remote_entity_id()),
1119 request.sender_id,
1120 )?
1121 .host_connection_id;
1122
1123 response.send(
1124 self.peer
1125 .forward_request(request.sender_id, host_connection_id, request.payload)
1126 .await?,
1127 )?;
1128 Ok(())
1129 }
1130
1131 async fn save_buffer(
1132 self: Arc<Server>,
1133 request: TypedEnvelope<proto::SaveBuffer>,
1134 response: Response<proto::SaveBuffer>,
1135 ) -> Result<()> {
1136 let project_id = ProjectId::from_proto(request.payload.project_id);
1137 let host = self
1138 .store()
1139 .await
1140 .read_project(project_id, request.sender_id)?
1141 .host_connection_id;
1142 let response_payload = self
1143 .peer
1144 .forward_request(request.sender_id, host, request.payload.clone())
1145 .await?;
1146
1147 let mut guests = self
1148 .store()
1149 .await
1150 .read_project(project_id, request.sender_id)?
1151 .connection_ids();
1152 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1153 broadcast(host, guests, |conn_id| {
1154 self.peer
1155 .forward_send(host, conn_id, response_payload.clone())
1156 });
1157 response.send(response_payload)?;
1158 Ok(())
1159 }
1160
1161 async fn update_buffer(
1162 self: Arc<Server>,
1163 request: TypedEnvelope<proto::UpdateBuffer>,
1164 response: Response<proto::UpdateBuffer>,
1165 ) -> Result<()> {
1166 let project_id = ProjectId::from_proto(request.payload.project_id);
1167 let receiver_ids = {
1168 let mut store = self.store_mut().await;
1169 store.register_project_activity(project_id, request.sender_id)?;
1170 store.project_connection_ids(project_id, request.sender_id)?
1171 };
1172
1173 broadcast(request.sender_id, receiver_ids, |connection_id| {
1174 self.peer
1175 .forward_send(request.sender_id, connection_id, request.payload.clone())
1176 });
1177 response.send(proto::Ack {})?;
1178 Ok(())
1179 }
1180
1181 async fn update_buffer_file(
1182 self: Arc<Server>,
1183 request: TypedEnvelope<proto::UpdateBufferFile>,
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 buffer_reloaded(
1197 self: Arc<Server>,
1198 request: TypedEnvelope<proto::BufferReloaded>,
1199 ) -> Result<()> {
1200 let receiver_ids = self.store().await.project_connection_ids(
1201 ProjectId::from_proto(request.payload.project_id),
1202 request.sender_id,
1203 )?;
1204 broadcast(request.sender_id, receiver_ids, |connection_id| {
1205 self.peer
1206 .forward_send(request.sender_id, connection_id, request.payload.clone())
1207 });
1208 Ok(())
1209 }
1210
1211 async fn buffer_saved(
1212 self: Arc<Server>,
1213 request: TypedEnvelope<proto::BufferSaved>,
1214 ) -> Result<()> {
1215 let receiver_ids = self.store().await.project_connection_ids(
1216 ProjectId::from_proto(request.payload.project_id),
1217 request.sender_id,
1218 )?;
1219 broadcast(request.sender_id, receiver_ids, |connection_id| {
1220 self.peer
1221 .forward_send(request.sender_id, connection_id, request.payload.clone())
1222 });
1223 Ok(())
1224 }
1225
1226 async fn follow(
1227 self: Arc<Self>,
1228 request: TypedEnvelope<proto::Follow>,
1229 response: Response<proto::Follow>,
1230 ) -> Result<()> {
1231 let project_id = ProjectId::from_proto(request.payload.project_id);
1232 let leader_id = ConnectionId(request.payload.leader_id);
1233 let follower_id = request.sender_id;
1234 {
1235 let mut store = self.store_mut().await;
1236 if !store
1237 .project_connection_ids(project_id, follower_id)?
1238 .contains(&leader_id)
1239 {
1240 Err(anyhow!("no such peer"))?;
1241 }
1242
1243 store.register_project_activity(project_id, follower_id)?;
1244 }
1245
1246 let mut response_payload = self
1247 .peer
1248 .forward_request(request.sender_id, leader_id, request.payload)
1249 .await?;
1250 response_payload
1251 .views
1252 .retain(|view| view.leader_id != Some(follower_id.0));
1253 response.send(response_payload)?;
1254 Ok(())
1255 }
1256
1257 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1258 let project_id = ProjectId::from_proto(request.payload.project_id);
1259 let leader_id = ConnectionId(request.payload.leader_id);
1260 let mut store = self.store_mut().await;
1261 if !store
1262 .project_connection_ids(project_id, request.sender_id)?
1263 .contains(&leader_id)
1264 {
1265 Err(anyhow!("no such peer"))?;
1266 }
1267 store.register_project_activity(project_id, request.sender_id)?;
1268 self.peer
1269 .forward_send(request.sender_id, leader_id, request.payload)?;
1270 Ok(())
1271 }
1272
1273 async fn update_followers(
1274 self: Arc<Self>,
1275 request: TypedEnvelope<proto::UpdateFollowers>,
1276 ) -> Result<()> {
1277 let project_id = ProjectId::from_proto(request.payload.project_id);
1278 let mut store = self.store_mut().await;
1279 store.register_project_activity(project_id, request.sender_id)?;
1280 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1281 let leader_id = request
1282 .payload
1283 .variant
1284 .as_ref()
1285 .and_then(|variant| match variant {
1286 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1287 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1288 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1289 });
1290 for follower_id in &request.payload.follower_ids {
1291 let follower_id = ConnectionId(*follower_id);
1292 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1293 self.peer
1294 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1295 }
1296 }
1297 Ok(())
1298 }
1299
1300 async fn get_channels(
1301 self: Arc<Server>,
1302 request: TypedEnvelope<proto::GetChannels>,
1303 response: Response<proto::GetChannels>,
1304 ) -> Result<()> {
1305 let user_id = self
1306 .store()
1307 .await
1308 .user_id_for_connection(request.sender_id)?;
1309 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1310 response.send(proto::GetChannelsResponse {
1311 channels: channels
1312 .into_iter()
1313 .map(|chan| proto::Channel {
1314 id: chan.id.to_proto(),
1315 name: chan.name,
1316 })
1317 .collect(),
1318 })?;
1319 Ok(())
1320 }
1321
1322 async fn get_users(
1323 self: Arc<Server>,
1324 request: TypedEnvelope<proto::GetUsers>,
1325 response: Response<proto::GetUsers>,
1326 ) -> Result<()> {
1327 let user_ids = request
1328 .payload
1329 .user_ids
1330 .into_iter()
1331 .map(UserId::from_proto)
1332 .collect();
1333 let users = self
1334 .app_state
1335 .db
1336 .get_users_by_ids(user_ids)
1337 .await?
1338 .into_iter()
1339 .map(|user| proto::User {
1340 id: user.id.to_proto(),
1341 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1342 github_login: user.github_login,
1343 })
1344 .collect();
1345 response.send(proto::UsersResponse { users })?;
1346 Ok(())
1347 }
1348
1349 async fn fuzzy_search_users(
1350 self: Arc<Server>,
1351 request: TypedEnvelope<proto::FuzzySearchUsers>,
1352 response: Response<proto::FuzzySearchUsers>,
1353 ) -> Result<()> {
1354 let user_id = self
1355 .store()
1356 .await
1357 .user_id_for_connection(request.sender_id)?;
1358 let query = request.payload.query;
1359 let db = &self.app_state.db;
1360 let users = match query.len() {
1361 0 => vec![],
1362 1 | 2 => db
1363 .get_user_by_github_login(&query)
1364 .await?
1365 .into_iter()
1366 .collect(),
1367 _ => db.fuzzy_search_users(&query, 10).await?,
1368 };
1369 let users = users
1370 .into_iter()
1371 .filter(|user| user.id != user_id)
1372 .map(|user| proto::User {
1373 id: user.id.to_proto(),
1374 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1375 github_login: user.github_login,
1376 })
1377 .collect();
1378 response.send(proto::UsersResponse { users })?;
1379 Ok(())
1380 }
1381
1382 async fn request_contact(
1383 self: Arc<Server>,
1384 request: TypedEnvelope<proto::RequestContact>,
1385 response: Response<proto::RequestContact>,
1386 ) -> Result<()> {
1387 let requester_id = self
1388 .store()
1389 .await
1390 .user_id_for_connection(request.sender_id)?;
1391 let responder_id = UserId::from_proto(request.payload.responder_id);
1392 if requester_id == responder_id {
1393 return Err(anyhow!("cannot add yourself as a contact"))?;
1394 }
1395
1396 self.app_state
1397 .db
1398 .send_contact_request(requester_id, responder_id)
1399 .await?;
1400
1401 // Update outgoing contact requests of requester
1402 let mut update = proto::UpdateContacts::default();
1403 update.outgoing_requests.push(responder_id.to_proto());
1404 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1405 self.peer.send(connection_id, update.clone())?;
1406 }
1407
1408 // Update incoming contact requests of responder
1409 let mut update = proto::UpdateContacts::default();
1410 update
1411 .incoming_requests
1412 .push(proto::IncomingContactRequest {
1413 requester_id: requester_id.to_proto(),
1414 should_notify: true,
1415 });
1416 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1417 self.peer.send(connection_id, update.clone())?;
1418 }
1419
1420 response.send(proto::Ack {})?;
1421 Ok(())
1422 }
1423
1424 async fn respond_to_contact_request(
1425 self: Arc<Server>,
1426 request: TypedEnvelope<proto::RespondToContactRequest>,
1427 response: Response<proto::RespondToContactRequest>,
1428 ) -> Result<()> {
1429 let responder_id = self
1430 .store()
1431 .await
1432 .user_id_for_connection(request.sender_id)?;
1433 let requester_id = UserId::from_proto(request.payload.requester_id);
1434 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1435 self.app_state
1436 .db
1437 .dismiss_contact_notification(responder_id, requester_id)
1438 .await?;
1439 } else {
1440 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1441 self.app_state
1442 .db
1443 .respond_to_contact_request(responder_id, requester_id, accept)
1444 .await?;
1445
1446 let store = self.store().await;
1447 // Update responder with new contact
1448 let mut update = proto::UpdateContacts::default();
1449 if accept {
1450 update
1451 .contacts
1452 .push(store.contact_for_user(requester_id, false));
1453 }
1454 update
1455 .remove_incoming_requests
1456 .push(requester_id.to_proto());
1457 for connection_id in store.connection_ids_for_user(responder_id) {
1458 self.peer.send(connection_id, update.clone())?;
1459 }
1460
1461 // Update requester with new contact
1462 let mut update = proto::UpdateContacts::default();
1463 if accept {
1464 update
1465 .contacts
1466 .push(store.contact_for_user(responder_id, true));
1467 }
1468 update
1469 .remove_outgoing_requests
1470 .push(responder_id.to_proto());
1471 for connection_id in store.connection_ids_for_user(requester_id) {
1472 self.peer.send(connection_id, update.clone())?;
1473 }
1474 }
1475
1476 response.send(proto::Ack {})?;
1477 Ok(())
1478 }
1479
1480 async fn remove_contact(
1481 self: Arc<Server>,
1482 request: TypedEnvelope<proto::RemoveContact>,
1483 response: Response<proto::RemoveContact>,
1484 ) -> Result<()> {
1485 let requester_id = self
1486 .store()
1487 .await
1488 .user_id_for_connection(request.sender_id)?;
1489 let responder_id = UserId::from_proto(request.payload.user_id);
1490 self.app_state
1491 .db
1492 .remove_contact(requester_id, responder_id)
1493 .await?;
1494
1495 // Update outgoing contact requests of requester
1496 let mut update = proto::UpdateContacts::default();
1497 update
1498 .remove_outgoing_requests
1499 .push(responder_id.to_proto());
1500 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1501 self.peer.send(connection_id, update.clone())?;
1502 }
1503
1504 // Update incoming contact requests of responder
1505 let mut update = proto::UpdateContacts::default();
1506 update
1507 .remove_incoming_requests
1508 .push(requester_id.to_proto());
1509 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1510 self.peer.send(connection_id, update.clone())?;
1511 }
1512
1513 response.send(proto::Ack {})?;
1514 Ok(())
1515 }
1516
1517 async fn join_channel(
1518 self: Arc<Self>,
1519 request: TypedEnvelope<proto::JoinChannel>,
1520 response: Response<proto::JoinChannel>,
1521 ) -> Result<()> {
1522 let user_id = self
1523 .store()
1524 .await
1525 .user_id_for_connection(request.sender_id)?;
1526 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1527 if !self
1528 .app_state
1529 .db
1530 .can_user_access_channel(user_id, channel_id)
1531 .await?
1532 {
1533 Err(anyhow!("access denied"))?;
1534 }
1535
1536 self.store_mut()
1537 .await
1538 .join_channel(request.sender_id, channel_id);
1539 let messages = self
1540 .app_state
1541 .db
1542 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1543 .await?
1544 .into_iter()
1545 .map(|msg| proto::ChannelMessage {
1546 id: msg.id.to_proto(),
1547 body: msg.body,
1548 timestamp: msg.sent_at.unix_timestamp() as u64,
1549 sender_id: msg.sender_id.to_proto(),
1550 nonce: Some(msg.nonce.as_u128().into()),
1551 })
1552 .collect::<Vec<_>>();
1553 response.send(proto::JoinChannelResponse {
1554 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1555 messages,
1556 })?;
1557 Ok(())
1558 }
1559
1560 async fn leave_channel(
1561 self: Arc<Self>,
1562 request: TypedEnvelope<proto::LeaveChannel>,
1563 ) -> Result<()> {
1564 let user_id = self
1565 .store()
1566 .await
1567 .user_id_for_connection(request.sender_id)?;
1568 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1569 if !self
1570 .app_state
1571 .db
1572 .can_user_access_channel(user_id, channel_id)
1573 .await?
1574 {
1575 Err(anyhow!("access denied"))?;
1576 }
1577
1578 self.store_mut()
1579 .await
1580 .leave_channel(request.sender_id, channel_id);
1581
1582 Ok(())
1583 }
1584
1585 async fn send_channel_message(
1586 self: Arc<Self>,
1587 request: TypedEnvelope<proto::SendChannelMessage>,
1588 response: Response<proto::SendChannelMessage>,
1589 ) -> Result<()> {
1590 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1591 let user_id;
1592 let connection_ids;
1593 {
1594 let state = self.store().await;
1595 user_id = state.user_id_for_connection(request.sender_id)?;
1596 connection_ids = state.channel_connection_ids(channel_id)?;
1597 }
1598
1599 // Validate the message body.
1600 let body = request.payload.body.trim().to_string();
1601 if body.len() > MAX_MESSAGE_LEN {
1602 return Err(anyhow!("message is too long"))?;
1603 }
1604 if body.is_empty() {
1605 return Err(anyhow!("message can't be blank"))?;
1606 }
1607
1608 let timestamp = OffsetDateTime::now_utc();
1609 let nonce = request
1610 .payload
1611 .nonce
1612 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1613
1614 let message_id = self
1615 .app_state
1616 .db
1617 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1618 .await?
1619 .to_proto();
1620 let message = proto::ChannelMessage {
1621 sender_id: user_id.to_proto(),
1622 id: message_id,
1623 body,
1624 timestamp: timestamp.unix_timestamp() as u64,
1625 nonce: Some(nonce),
1626 };
1627 broadcast(request.sender_id, connection_ids, |conn_id| {
1628 self.peer.send(
1629 conn_id,
1630 proto::ChannelMessageSent {
1631 channel_id: channel_id.to_proto(),
1632 message: Some(message.clone()),
1633 },
1634 )
1635 });
1636 response.send(proto::SendChannelMessageResponse {
1637 message: Some(message),
1638 })?;
1639 Ok(())
1640 }
1641
1642 async fn get_channel_messages(
1643 self: Arc<Self>,
1644 request: TypedEnvelope<proto::GetChannelMessages>,
1645 response: Response<proto::GetChannelMessages>,
1646 ) -> Result<()> {
1647 let user_id = self
1648 .store()
1649 .await
1650 .user_id_for_connection(request.sender_id)?;
1651 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1652 if !self
1653 .app_state
1654 .db
1655 .can_user_access_channel(user_id, channel_id)
1656 .await?
1657 {
1658 Err(anyhow!("access denied"))?;
1659 }
1660
1661 let messages = self
1662 .app_state
1663 .db
1664 .get_channel_messages(
1665 channel_id,
1666 MESSAGE_COUNT_PER_PAGE,
1667 Some(MessageId::from_proto(request.payload.before_message_id)),
1668 )
1669 .await?
1670 .into_iter()
1671 .map(|msg| proto::ChannelMessage {
1672 id: msg.id.to_proto(),
1673 body: msg.body,
1674 timestamp: msg.sent_at.unix_timestamp() as u64,
1675 sender_id: msg.sender_id.to_proto(),
1676 nonce: Some(msg.nonce.as_u128().into()),
1677 })
1678 .collect::<Vec<_>>();
1679 response.send(proto::GetChannelMessagesResponse {
1680 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1681 messages,
1682 })?;
1683 Ok(())
1684 }
1685
1686 async fn store<'a>(self: &'a Arc<Self>) -> StoreReadGuard<'a> {
1687 #[cfg(test)]
1688 tokio::task::yield_now().await;
1689 let guard = self.store.read().await;
1690 #[cfg(test)]
1691 tokio::task::yield_now().await;
1692 StoreReadGuard {
1693 guard,
1694 _not_send: PhantomData,
1695 }
1696 }
1697
1698 async fn store_mut<'a>(self: &'a Arc<Self>) -> StoreWriteGuard<'a> {
1699 #[cfg(test)]
1700 tokio::task::yield_now().await;
1701 let guard = self.store.write().await;
1702 #[cfg(test)]
1703 tokio::task::yield_now().await;
1704 StoreWriteGuard {
1705 guard,
1706 _not_send: PhantomData,
1707 }
1708 }
1709
1710 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1711 ServerSnapshot {
1712 store: self.store.read().await,
1713 peer: &self.peer,
1714 }
1715 }
1716}
1717
1718impl<'a> Deref for StoreReadGuard<'a> {
1719 type Target = Store;
1720
1721 fn deref(&self) -> &Self::Target {
1722 &*self.guard
1723 }
1724}
1725
1726impl<'a> Deref for StoreWriteGuard<'a> {
1727 type Target = Store;
1728
1729 fn deref(&self) -> &Self::Target {
1730 &*self.guard
1731 }
1732}
1733
1734impl<'a> DerefMut for StoreWriteGuard<'a> {
1735 fn deref_mut(&mut self) -> &mut Self::Target {
1736 &mut *self.guard
1737 }
1738}
1739
1740impl<'a> Drop for StoreWriteGuard<'a> {
1741 fn drop(&mut self) {
1742 #[cfg(test)]
1743 self.check_invariants();
1744 }
1745}
1746
1747impl Executor for RealExecutor {
1748 type Sleep = Sleep;
1749
1750 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1751 tokio::task::spawn(future);
1752 }
1753
1754 fn sleep(&self, duration: Duration) -> Self::Sleep {
1755 tokio::time::sleep(duration)
1756 }
1757}
1758
1759fn broadcast<F>(
1760 sender_id: ConnectionId,
1761 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1762 mut f: F,
1763) where
1764 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1765{
1766 for receiver_id in receiver_ids {
1767 if receiver_id != sender_id {
1768 f(receiver_id).trace_err();
1769 }
1770 }
1771}
1772
1773lazy_static! {
1774 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1775}
1776
1777pub struct ProtocolVersion(u32);
1778
1779impl Header for ProtocolVersion {
1780 fn name() -> &'static HeaderName {
1781 &ZED_PROTOCOL_VERSION
1782 }
1783
1784 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1785 where
1786 Self: Sized,
1787 I: Iterator<Item = &'i axum::http::HeaderValue>,
1788 {
1789 let version = values
1790 .next()
1791 .ok_or_else(|| axum::headers::Error::invalid())?
1792 .to_str()
1793 .map_err(|_| axum::headers::Error::invalid())?
1794 .parse()
1795 .map_err(|_| axum::headers::Error::invalid())?;
1796 Ok(Self(version))
1797 }
1798
1799 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1800 values.extend([self.0.to_string().parse().unwrap()]);
1801 }
1802}
1803
1804pub fn routes(server: Arc<Server>) -> Router<Body> {
1805 Router::new()
1806 .route("/rpc", get(handle_websocket_request))
1807 .layer(
1808 ServiceBuilder::new()
1809 .layer(Extension(server.app_state.clone()))
1810 .layer(middleware::from_fn(auth::validate_header)),
1811 )
1812 .route("/metrics", get(handle_metrics))
1813 .layer(Extension(server))
1814}
1815
1816pub async fn handle_websocket_request(
1817 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1818 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1819 Extension(server): Extension<Arc<Server>>,
1820 Extension(user): Extension<User>,
1821 ws: WebSocketUpgrade,
1822) -> axum::response::Response {
1823 if protocol_version != rpc::PROTOCOL_VERSION {
1824 return (
1825 StatusCode::UPGRADE_REQUIRED,
1826 "client must be upgraded".to_string(),
1827 )
1828 .into_response();
1829 }
1830 let socket_address = socket_address.to_string();
1831 ws.on_upgrade(move |socket| {
1832 use util::ResultExt;
1833 let socket = socket
1834 .map_ok(to_tungstenite_message)
1835 .err_into()
1836 .with(|message| async move { Ok(to_axum_message(message)) });
1837 let connection = Connection::new(Box::pin(socket));
1838 async move {
1839 server
1840 .handle_connection(connection, socket_address, user, None, RealExecutor)
1841 .await
1842 .log_err();
1843 }
1844 })
1845}
1846
1847pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1848 // We call `store_mut` here for its side effects of updating metrics.
1849 let metrics = server.store().await.metrics();
1850 METRIC_CONNECTIONS.set(metrics.connections as _);
1851 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1852 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1853 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1854
1855 let encoder = prometheus::TextEncoder::new();
1856 let metric_families = prometheus::gather();
1857 match encoder.encode_to_string(&metric_families) {
1858 Ok(string) => (StatusCode::OK, string).into_response(),
1859 Err(error) => (
1860 StatusCode::INTERNAL_SERVER_ERROR,
1861 format!("failed to encode metrics {:?}", error),
1862 )
1863 .into_response(),
1864 }
1865}
1866
1867fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1868 match message {
1869 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1870 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1871 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1872 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1873 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1874 code: frame.code.into(),
1875 reason: frame.reason,
1876 })),
1877 }
1878}
1879
1880fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1881 match message {
1882 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1883 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1884 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1885 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1886 AxumMessage::Close(frame) => {
1887 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1888 code: frame.code.into(),
1889 reason: frame.reason,
1890 }))
1891 }
1892 }
1893}
1894
1895pub trait ResultExt {
1896 type Ok;
1897
1898 fn trace_err(self) -> Option<Self::Ok>;
1899}
1900
1901impl<T, E> ResultExt for Result<T, E>
1902where
1903 E: std::fmt::Debug,
1904{
1905 type Ok = T;
1906
1907 fn trace_err(self) -> Option<T> {
1908 match self {
1909 Ok(value) => Some(value),
1910 Err(error) => {
1911 tracing::error!("{:?}", error);
1912 None
1913 }
1914 }
1915 }
1916}