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::{Mutex, MutexGuard},
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: Mutex<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
118pub(crate) struct StoreGuard<'a> {
119 guard: MutexGuard<'a, Store>,
120 _not_send: PhantomData<Rc<()>>,
121}
122
123#[derive(Serialize)]
124pub struct ServerSnapshot<'a> {
125 peer: &'a Peer,
126 #[serde(serialize_with = "serialize_deref")]
127 store: StoreGuard<'a>,
128}
129
130pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
131where
132 S: Serializer,
133 T: Deref<Target = U>,
134 U: Serialize,
135{
136 Serialize::serialize(value.deref(), serializer)
137}
138
139impl Server {
140 pub fn new(
141 app_state: Arc<AppState>,
142 notifications: Option<mpsc::UnboundedSender<()>>,
143 ) -> Arc<Self> {
144 let mut server = Self {
145 peer: Peer::new(),
146 app_state,
147 store: Default::default(),
148 handlers: Default::default(),
149 notifications,
150 };
151
152 server
153 .add_request_handler(Server::ping)
154 .add_request_handler(Server::register_project)
155 .add_request_handler(Server::unregister_project)
156 .add_request_handler(Server::join_project)
157 .add_message_handler(Server::leave_project)
158 .add_message_handler(Server::respond_to_join_project_request)
159 .add_message_handler(Server::update_project)
160 .add_message_handler(Server::register_project_activity)
161 .add_request_handler(Server::update_worktree)
162 .add_message_handler(Server::update_worktree_extensions)
163 .add_message_handler(Server::start_language_server)
164 .add_message_handler(Server::update_language_server)
165 .add_message_handler(Server::update_diagnostic_summary)
166 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
167 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
168 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
169 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
170 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
171 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
172 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
173 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
175 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
176 .add_request_handler(
177 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
178 )
179 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
180 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
181 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
182 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
183 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
184 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
185 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
186 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
187 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
189 .add_request_handler(Server::update_buffer)
190 .add_message_handler(Server::update_buffer_file)
191 .add_message_handler(Server::buffer_reloaded)
192 .add_message_handler(Server::buffer_saved)
193 .add_request_handler(Server::save_buffer)
194 .add_request_handler(Server::get_channels)
195 .add_request_handler(Server::get_users)
196 .add_request_handler(Server::fuzzy_search_users)
197 .add_request_handler(Server::request_contact)
198 .add_request_handler(Server::remove_contact)
199 .add_request_handler(Server::respond_to_contact_request)
200 .add_request_handler(Server::join_channel)
201 .add_message_handler(Server::leave_channel)
202 .add_request_handler(Server::send_channel_message)
203 .add_request_handler(Server::follow)
204 .add_message_handler(Server::unfollow)
205 .add_message_handler(Server::update_followers)
206 .add_request_handler(Server::get_channel_messages);
207
208 Arc::new(server)
209 }
210
211 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
212 where
213 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
214 Fut: 'static + Send + Future<Output = Result<()>>,
215 M: EnvelopedMessage,
216 {
217 let prev_handler = self.handlers.insert(
218 TypeId::of::<M>(),
219 Box::new(move |server, envelope| {
220 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
221 let span = info_span!(
222 "handle message",
223 payload_type = envelope.payload_type_name()
224 );
225 span.in_scope(|| {
226 tracing::info!(
227 payload_type = envelope.payload_type_name(),
228 "message received"
229 );
230 });
231 let future = (handler)(server, *envelope);
232 async move {
233 if let Err(error) = future.await {
234 tracing::error!(%error, "error handling message");
235 }
236 }
237 .instrument(span)
238 .boxed()
239 }),
240 );
241 if prev_handler.is_some() {
242 panic!("registered a handler for the same message twice");
243 }
244 self
245 }
246
247 /// Handle a request while holding a lock to the store. This is useful when we're registering
248 /// a connection but we want to respond on the connection before anybody else can send on it.
249 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
250 where
251 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
252 Fut: Send + Future<Output = Result<()>>,
253 M: RequestMessage,
254 {
255 let handler = Arc::new(handler);
256 self.add_message_handler(move |server, envelope| {
257 let receipt = envelope.receipt();
258 let handler = handler.clone();
259 async move {
260 let responded = Arc::new(AtomicBool::default());
261 let response = Response {
262 server: server.clone(),
263 responded: responded.clone(),
264 receipt: envelope.receipt(),
265 };
266 match (handler)(server.clone(), envelope, response).await {
267 Ok(()) => {
268 if responded.load(std::sync::atomic::Ordering::SeqCst) {
269 Ok(())
270 } else {
271 Err(anyhow!("handler did not send a response"))?
272 }
273 }
274 Err(error) => {
275 server.peer.respond_with_error(
276 receipt,
277 proto::Error {
278 message: error.to_string(),
279 },
280 )?;
281 Err(error)
282 }
283 }
284 }
285 })
286 }
287
288 /// Start a long lived task that records which users are active in which projects.
289 pub fn start_recording_project_activity<E: 'static + Executor>(
290 self: &Arc<Self>,
291 interval: Duration,
292 executor: E,
293 ) {
294 executor.spawn_detached({
295 let this = Arc::downgrade(self);
296 let executor = executor.clone();
297 async move {
298 let mut period_start = OffsetDateTime::now_utc();
299 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
300 loop {
301 let sleep = executor.sleep(interval);
302 sleep.await;
303 let this = if let Some(this) = this.upgrade() {
304 this
305 } else {
306 break;
307 };
308
309 active_projects.clear();
310 active_projects.extend(this.store().await.projects().flat_map(
311 |(project_id, project)| {
312 project.guests.values().chain([&project.host]).filter_map(
313 |collaborator| {
314 if !collaborator.admin
315 && collaborator
316 .last_activity
317 .map_or(false, |activity| activity > period_start)
318 {
319 Some((collaborator.user_id, *project_id))
320 } else {
321 None
322 }
323 },
324 )
325 },
326 ));
327
328 let period_end = OffsetDateTime::now_utc();
329 this.app_state
330 .db
331 .record_user_activity(period_start..period_end, &active_projects)
332 .await
333 .trace_err();
334 period_start = period_end;
335 }
336 }
337 });
338 }
339
340 pub fn handle_connection<E: Executor>(
341 self: &Arc<Self>,
342 connection: Connection,
343 address: String,
344 user: User,
345 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
346 executor: E,
347 ) -> impl Future<Output = Result<()>> {
348 let mut this = self.clone();
349 let user_id = user.id;
350 let login = user.github_login;
351 let span = info_span!("handle connection", %user_id, %login, %address);
352 async move {
353 let (connection_id, handle_io, mut incoming_rx) = this
354 .peer
355 .add_connection(connection, {
356 let executor = executor.clone();
357 move |duration| {
358 let timer = executor.sleep(duration);
359 async move {
360 timer.await;
361 }
362 }
363 })
364 .await;
365
366 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
367
368 if let Some(send_connection_id) = send_connection_id.as_mut() {
369 let _ = send_connection_id.send(connection_id).await;
370 }
371
372 if !user.connected_once {
373 this.peer.send(connection_id, proto::ShowContacts {})?;
374 this.app_state.db.set_user_connected_once(user_id, true).await?;
375 }
376
377 let (contacts, invite_code) = future::try_join(
378 this.app_state.db.get_contacts(user_id),
379 this.app_state.db.get_invite_code_for_user(user_id)
380 ).await?;
381
382 {
383 let mut store = this.store().await;
384 store.add_connection(connection_id, user_id, user.admin);
385 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
386
387 if let Some((code, count)) = invite_code {
388 this.peer.send(connection_id, proto::UpdateInviteInfo {
389 url: format!("{}{}", this.app_state.invite_link_prefix, code),
390 count,
391 })?;
392 }
393 }
394 this.update_user_contacts(user_id).await?;
395
396 let handle_io = handle_io.fuse();
397 futures::pin_mut!(handle_io);
398
399 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
400 // This prevents deadlocks when e.g., client A performs a request to client B and
401 // client B performs a request to client A. If both clients stop processing further
402 // messages until their respective request completes, they won't have a chance to
403 // respond to the other client's request and cause a deadlock.
404 //
405 // This arrangement ensures we will attempt to process earlier messages first, but fall
406 // back to processing messages arrived later in the spirit of making progress.
407 let mut foreground_message_handlers = FuturesUnordered::new();
408 loop {
409 let next_message = incoming_rx.next().fuse();
410 futures::pin_mut!(next_message);
411 futures::select_biased! {
412 result = handle_io => {
413 if let Err(error) = result {
414 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
415 }
416 break;
417 }
418 _ = foreground_message_handlers.next() => {}
419 message = next_message => {
420 if let Some(message) = message {
421 let type_name = message.payload_type_name();
422 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
423 let span_enter = span.enter();
424 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
425 let notifications = this.notifications.clone();
426 let is_background = message.is_background();
427 let handle_message = (handler)(this.clone(), message);
428
429 drop(span_enter);
430 let handle_message = async move {
431 handle_message.await;
432 if let Some(mut notifications) = notifications {
433 let _ = notifications.send(()).await;
434 }
435 }.instrument(span);
436
437 if is_background {
438 executor.spawn_detached(handle_message);
439 } else {
440 foreground_message_handlers.push(handle_message);
441 }
442 } else {
443 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
444 }
445 } else {
446 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
447 break;
448 }
449 }
450 }
451 }
452
453 drop(foreground_message_handlers);
454 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
455 if let Err(error) = this.sign_out(connection_id).await {
456 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
457 }
458
459 Ok(())
460 }.instrument(span)
461 }
462
463 #[instrument(skip(self), err)]
464 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
465 self.peer.disconnect(connection_id);
466
467 let mut projects_to_unregister = Vec::new();
468 let removed_user_id;
469 {
470 let mut store = self.store().await;
471 let removed_connection = store.remove_connection(connection_id)?;
472
473 for (project_id, project) in removed_connection.hosted_projects {
474 projects_to_unregister.push(project_id);
475 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
476 self.peer.send(
477 conn_id,
478 proto::UnregisterProject {
479 project_id: project_id.to_proto(),
480 },
481 )
482 });
483
484 for (_, receipts) in project.join_requests {
485 for receipt in receipts {
486 self.peer.respond(
487 receipt,
488 proto::JoinProjectResponse {
489 variant: Some(proto::join_project_response::Variant::Decline(
490 proto::join_project_response::Decline {
491 reason: proto::join_project_response::decline::Reason::WentOffline as i32
492 },
493 )),
494 },
495 )?;
496 }
497 }
498 }
499
500 for project_id in removed_connection.guest_project_ids {
501 if let Some(project) = store.project(project_id).trace_err() {
502 broadcast(connection_id, project.connection_ids(), |conn_id| {
503 self.peer.send(
504 conn_id,
505 proto::RemoveProjectCollaborator {
506 project_id: project_id.to_proto(),
507 peer_id: connection_id.0,
508 },
509 )
510 });
511 if project.guests.is_empty() {
512 self.peer
513 .send(
514 project.host_connection_id,
515 proto::ProjectUnshared {
516 project_id: project_id.to_proto(),
517 },
518 )
519 .trace_err();
520 }
521 }
522 }
523
524 removed_user_id = removed_connection.user_id;
525 };
526
527 self.update_user_contacts(removed_user_id).await.trace_err();
528
529 for project_id in projects_to_unregister {
530 self.app_state
531 .db
532 .unregister_project(project_id)
533 .await
534 .trace_err();
535 }
536
537 Ok(())
538 }
539
540 pub async fn invite_code_redeemed(
541 self: &Arc<Self>,
542 code: &str,
543 invitee_id: UserId,
544 ) -> Result<()> {
545 let user = self.app_state.db.get_user_for_invite_code(code).await?;
546 let store = self.store().await;
547 let invitee_contact = store.contact_for_user(invitee_id, true);
548 for connection_id in store.connection_ids_for_user(user.id) {
549 self.peer.send(
550 connection_id,
551 proto::UpdateContacts {
552 contacts: vec![invitee_contact.clone()],
553 ..Default::default()
554 },
555 )?;
556 self.peer.send(
557 connection_id,
558 proto::UpdateInviteInfo {
559 url: format!("{}{}", self.app_state.invite_link_prefix, code),
560 count: user.invite_count as u32,
561 },
562 )?;
563 }
564 Ok(())
565 }
566
567 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
568 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
569 if let Some(invite_code) = &user.invite_code {
570 let store = self.store().await;
571 for connection_id in store.connection_ids_for_user(user_id) {
572 self.peer.send(
573 connection_id,
574 proto::UpdateInviteInfo {
575 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
576 count: user.invite_count as u32,
577 },
578 )?;
579 }
580 }
581 }
582 Ok(())
583 }
584
585 async fn ping(
586 self: Arc<Server>,
587 _: TypedEnvelope<proto::Ping>,
588 response: Response<proto::Ping>,
589 ) -> Result<()> {
590 response.send(proto::Ack {})?;
591 Ok(())
592 }
593
594 async fn register_project(
595 self: Arc<Server>,
596 request: TypedEnvelope<proto::RegisterProject>,
597 response: Response<proto::RegisterProject>,
598 ) -> Result<()> {
599 let user_id = self
600 .store()
601 .await
602 .user_id_for_connection(request.sender_id)?;
603 let project_id = self.app_state.db.register_project(user_id).await?;
604 self.store().await.register_project(
605 request.sender_id,
606 project_id,
607 request.payload.online,
608 )?;
609
610 response.send(proto::RegisterProjectResponse {
611 project_id: project_id.to_proto(),
612 })?;
613
614 Ok(())
615 }
616
617 async fn unregister_project(
618 self: Arc<Server>,
619 request: TypedEnvelope<proto::UnregisterProject>,
620 response: Response<proto::UnregisterProject>,
621 ) -> Result<()> {
622 let project_id = ProjectId::from_proto(request.payload.project_id);
623 let (user_id, project) = {
624 let mut state = self.store().await;
625 let project = state.unregister_project(project_id, request.sender_id)?;
626 (state.user_id_for_connection(request.sender_id)?, project)
627 };
628 self.app_state.db.unregister_project(project_id).await?;
629
630 broadcast(
631 request.sender_id,
632 project.guests.keys().copied(),
633 |conn_id| {
634 self.peer.send(
635 conn_id,
636 proto::UnregisterProject {
637 project_id: project_id.to_proto(),
638 },
639 )
640 },
641 );
642 for (_, receipts) in project.join_requests {
643 for receipt in receipts {
644 self.peer.respond(
645 receipt,
646 proto::JoinProjectResponse {
647 variant: Some(proto::join_project_response::Variant::Decline(
648 proto::join_project_response::Decline {
649 reason: proto::join_project_response::decline::Reason::Closed
650 as i32,
651 },
652 )),
653 },
654 )?;
655 }
656 }
657
658 // Send out the `UpdateContacts` message before responding to the unregister
659 // request. This way, when the project's host can keep track of the project's
660 // remote id until after they've received the `UpdateContacts` message for
661 // themself.
662 self.update_user_contacts(user_id).await?;
663 response.send(proto::Ack {})?;
664
665 Ok(())
666 }
667
668 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
669 let contacts = self.app_state.db.get_contacts(user_id).await?;
670 let store = self.store().await;
671 let updated_contact = store.contact_for_user(user_id, false);
672 for contact in contacts {
673 if let db::Contact::Accepted {
674 user_id: contact_user_id,
675 ..
676 } = contact
677 {
678 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
679 self.peer
680 .send(
681 contact_conn_id,
682 proto::UpdateContacts {
683 contacts: vec![updated_contact.clone()],
684 remove_contacts: Default::default(),
685 incoming_requests: Default::default(),
686 remove_incoming_requests: Default::default(),
687 outgoing_requests: Default::default(),
688 remove_outgoing_requests: Default::default(),
689 },
690 )
691 .trace_err();
692 }
693 }
694 }
695 Ok(())
696 }
697
698 async fn join_project(
699 self: Arc<Server>,
700 request: TypedEnvelope<proto::JoinProject>,
701 response: Response<proto::JoinProject>,
702 ) -> Result<()> {
703 let project_id = ProjectId::from_proto(request.payload.project_id);
704
705 let host_user_id;
706 let guest_user_id;
707 let host_connection_id;
708 {
709 let state = self.store().await;
710 let project = state.project(project_id)?;
711 host_user_id = project.host.user_id;
712 host_connection_id = project.host_connection_id;
713 guest_user_id = state.user_id_for_connection(request.sender_id)?;
714 };
715
716 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
717 let has_contact = self
718 .app_state
719 .db
720 .has_contact(guest_user_id, host_user_id)
721 .await?;
722 if !has_contact {
723 return Err(anyhow!("no such project"))?;
724 }
725
726 self.store().await.request_join_project(
727 guest_user_id,
728 project_id,
729 response.into_receipt(),
730 )?;
731 self.peer.send(
732 host_connection_id,
733 proto::RequestJoinProject {
734 project_id: project_id.to_proto(),
735 requester_id: guest_user_id.to_proto(),
736 },
737 )?;
738 Ok(())
739 }
740
741 async fn respond_to_join_project_request(
742 self: Arc<Server>,
743 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
744 ) -> Result<()> {
745 let host_user_id;
746
747 {
748 let mut state = self.store().await;
749 let project_id = ProjectId::from_proto(request.payload.project_id);
750 let project = state.project(project_id)?;
751 if project.host_connection_id != request.sender_id {
752 Err(anyhow!("no such connection"))?;
753 }
754
755 host_user_id = project.host.user_id;
756 let guest_user_id = UserId::from_proto(request.payload.requester_id);
757
758 if !request.payload.allow {
759 let receipts = state
760 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
761 .ok_or_else(|| anyhow!("no such request"))?;
762 for receipt in receipts {
763 self.peer.respond(
764 receipt,
765 proto::JoinProjectResponse {
766 variant: Some(proto::join_project_response::Variant::Decline(
767 proto::join_project_response::Decline {
768 reason: proto::join_project_response::decline::Reason::Declined
769 as i32,
770 },
771 )),
772 },
773 )?;
774 }
775 return Ok(());
776 }
777
778 let (receipts_with_replica_ids, project) = state
779 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
780 .ok_or_else(|| anyhow!("no such request"))?;
781
782 let peer_count = project.guests.len();
783 let mut collaborators = Vec::with_capacity(peer_count);
784 collaborators.push(proto::Collaborator {
785 peer_id: project.host_connection_id.0,
786 replica_id: 0,
787 user_id: project.host.user_id.to_proto(),
788 });
789 let worktrees = project
790 .worktrees
791 .iter()
792 .map(|(id, worktree)| proto::WorktreeMetadata {
793 id: *id,
794 root_name: worktree.root_name.clone(),
795 visible: worktree.visible,
796 })
797 .collect::<Vec<_>>();
798
799 // Add all guests other than the requesting user's own connections as collaborators
800 for (guest_conn_id, guest) in &project.guests {
801 if receipts_with_replica_ids
802 .iter()
803 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
804 {
805 collaborators.push(proto::Collaborator {
806 peer_id: guest_conn_id.0,
807 replica_id: guest.replica_id as u32,
808 user_id: guest.user_id.to_proto(),
809 });
810 }
811 }
812
813 for conn_id in project.connection_ids() {
814 for (receipt, replica_id) in &receipts_with_replica_ids {
815 if conn_id != receipt.sender_id {
816 self.peer.send(
817 conn_id,
818 proto::AddProjectCollaborator {
819 project_id: project_id.to_proto(),
820 collaborator: Some(proto::Collaborator {
821 peer_id: receipt.sender_id.0,
822 replica_id: *replica_id as u32,
823 user_id: guest_user_id.to_proto(),
824 }),
825 },
826 )?;
827 }
828 }
829 }
830
831 // First, we send the metadata associated with each worktree.
832 for (receipt, replica_id) in &receipts_with_replica_ids {
833 self.peer.respond(
834 receipt.clone(),
835 proto::JoinProjectResponse {
836 variant: Some(proto::join_project_response::Variant::Accept(
837 proto::join_project_response::Accept {
838 worktrees: worktrees.clone(),
839 replica_id: *replica_id as u32,
840 collaborators: collaborators.clone(),
841 language_servers: project.language_servers.clone(),
842 },
843 )),
844 },
845 )?;
846 }
847
848 for (worktree_id, worktree) in &project.worktrees {
849 #[cfg(any(test, feature = "test-support"))]
850 const MAX_CHUNK_SIZE: usize = 2;
851 #[cfg(not(any(test, feature = "test-support")))]
852 const MAX_CHUNK_SIZE: usize = 256;
853
854 // Stream this worktree's entries.
855 let message = proto::UpdateWorktree {
856 project_id: project_id.to_proto(),
857 worktree_id: *worktree_id,
858 root_name: worktree.root_name.clone(),
859 updated_entries: worktree.entries.values().cloned().collect(),
860 removed_entries: Default::default(),
861 scan_id: worktree.scan_id,
862 is_last_update: worktree.is_complete,
863 };
864 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
865 for (receipt, _) in &receipts_with_replica_ids {
866 self.peer.send(receipt.sender_id, update.clone())?;
867 }
868 }
869
870 // Stream this worktree's diagnostics.
871 for summary in worktree.diagnostic_summaries.values() {
872 for (receipt, _) in &receipts_with_replica_ids {
873 self.peer.send(
874 receipt.sender_id,
875 proto::UpdateDiagnosticSummary {
876 project_id: project_id.to_proto(),
877 worktree_id: *worktree_id,
878 summary: Some(summary.clone()),
879 },
880 )?;
881 }
882 }
883 }
884 }
885
886 self.update_user_contacts(host_user_id).await?;
887 Ok(())
888 }
889
890 async fn leave_project(
891 self: Arc<Server>,
892 request: TypedEnvelope<proto::LeaveProject>,
893 ) -> Result<()> {
894 let sender_id = request.sender_id;
895 let project_id = ProjectId::from_proto(request.payload.project_id);
896 let project;
897 {
898 let mut store = self.store().await;
899 project = store.leave_project(sender_id, project_id)?;
900 tracing::info!(
901 %project_id,
902 host_user_id = %project.host_user_id,
903 host_connection_id = %project.host_connection_id,
904 "leave project"
905 );
906
907 if project.remove_collaborator {
908 broadcast(sender_id, project.connection_ids, |conn_id| {
909 self.peer.send(
910 conn_id,
911 proto::RemoveProjectCollaborator {
912 project_id: project_id.to_proto(),
913 peer_id: sender_id.0,
914 },
915 )
916 });
917 }
918
919 if let Some(requester_id) = project.cancel_request {
920 self.peer.send(
921 project.host_connection_id,
922 proto::JoinProjectRequestCancelled {
923 project_id: project_id.to_proto(),
924 requester_id: requester_id.to_proto(),
925 },
926 )?;
927 }
928
929 if project.unshare {
930 self.peer.send(
931 project.host_connection_id,
932 proto::ProjectUnshared {
933 project_id: project_id.to_proto(),
934 },
935 )?;
936 }
937 }
938 self.update_user_contacts(project.host_user_id).await?;
939 Ok(())
940 }
941
942 async fn update_project(
943 self: Arc<Server>,
944 request: TypedEnvelope<proto::UpdateProject>,
945 ) -> Result<()> {
946 let project_id = ProjectId::from_proto(request.payload.project_id);
947 let user_id;
948 {
949 let mut state = self.store().await;
950 user_id = state.user_id_for_connection(request.sender_id)?;
951 let guest_connection_ids = state
952 .read_project(project_id, request.sender_id)?
953 .guest_connection_ids();
954 let unshared_project = state.update_project(
955 project_id,
956 &request.payload.worktrees,
957 request.payload.online,
958 request.sender_id,
959 )?;
960
961 if let Some(unshared_project) = unshared_project {
962 broadcast(
963 request.sender_id,
964 unshared_project.guests.keys().copied(),
965 |conn_id| {
966 self.peer.send(
967 conn_id,
968 proto::UnregisterProject {
969 project_id: project_id.to_proto(),
970 },
971 )
972 },
973 );
974 for (_, receipts) in unshared_project.pending_join_requests {
975 for receipt in receipts {
976 self.peer.respond(
977 receipt,
978 proto::JoinProjectResponse {
979 variant: Some(proto::join_project_response::Variant::Decline(
980 proto::join_project_response::Decline {
981 reason:
982 proto::join_project_response::decline::Reason::Closed
983 as i32,
984 },
985 )),
986 },
987 )?;
988 }
989 }
990 } else {
991 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
992 self.peer.forward_send(
993 request.sender_id,
994 connection_id,
995 request.payload.clone(),
996 )
997 });
998 }
999 };
1000
1001 self.update_user_contacts(user_id).await?;
1002 Ok(())
1003 }
1004
1005 async fn register_project_activity(
1006 self: Arc<Server>,
1007 request: TypedEnvelope<proto::RegisterProjectActivity>,
1008 ) -> Result<()> {
1009 self.store().await.register_project_activity(
1010 ProjectId::from_proto(request.payload.project_id),
1011 request.sender_id,
1012 )?;
1013 Ok(())
1014 }
1015
1016 async fn update_worktree(
1017 self: Arc<Server>,
1018 request: TypedEnvelope<proto::UpdateWorktree>,
1019 response: Response<proto::UpdateWorktree>,
1020 ) -> Result<()> {
1021 let project_id = ProjectId::from_proto(request.payload.project_id);
1022 let worktree_id = request.payload.worktree_id;
1023 let (connection_ids, metadata_changed) = {
1024 let mut store = self.store().await;
1025 let (connection_ids, metadata_changed) = store.update_worktree(
1026 request.sender_id,
1027 project_id,
1028 worktree_id,
1029 &request.payload.root_name,
1030 &request.payload.removed_entries,
1031 &request.payload.updated_entries,
1032 request.payload.scan_id,
1033 request.payload.is_last_update,
1034 )?;
1035 (connection_ids, metadata_changed)
1036 };
1037
1038 broadcast(request.sender_id, connection_ids, |connection_id| {
1039 self.peer
1040 .forward_send(request.sender_id, connection_id, request.payload.clone())
1041 });
1042 if metadata_changed {
1043 let user_id = self
1044 .store()
1045 .await
1046 .user_id_for_connection(request.sender_id)?;
1047 self.update_user_contacts(user_id).await?;
1048 }
1049 response.send(proto::Ack {})?;
1050 Ok(())
1051 }
1052
1053 async fn update_worktree_extensions(
1054 self: Arc<Server>,
1055 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1056 ) -> Result<()> {
1057 let project_id = ProjectId::from_proto(request.payload.project_id);
1058 let worktree_id = request.payload.worktree_id;
1059 let extensions = request
1060 .payload
1061 .extensions
1062 .into_iter()
1063 .zip(request.payload.counts)
1064 .collect();
1065 self.app_state
1066 .db
1067 .update_worktree_extensions(project_id, worktree_id, extensions)
1068 .await?;
1069 Ok(())
1070 }
1071
1072 async fn update_diagnostic_summary(
1073 self: Arc<Server>,
1074 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1075 ) -> Result<()> {
1076 let summary = request
1077 .payload
1078 .summary
1079 .clone()
1080 .ok_or_else(|| anyhow!("invalid summary"))?;
1081 let receiver_ids = self.store().await.update_diagnostic_summary(
1082 ProjectId::from_proto(request.payload.project_id),
1083 request.payload.worktree_id,
1084 request.sender_id,
1085 summary,
1086 )?;
1087
1088 broadcast(request.sender_id, receiver_ids, |connection_id| {
1089 self.peer
1090 .forward_send(request.sender_id, connection_id, request.payload.clone())
1091 });
1092 Ok(())
1093 }
1094
1095 async fn start_language_server(
1096 self: Arc<Server>,
1097 request: TypedEnvelope<proto::StartLanguageServer>,
1098 ) -> Result<()> {
1099 let receiver_ids = self.store().await.start_language_server(
1100 ProjectId::from_proto(request.payload.project_id),
1101 request.sender_id,
1102 request
1103 .payload
1104 .server
1105 .clone()
1106 .ok_or_else(|| anyhow!("invalid language server"))?,
1107 )?;
1108 broadcast(request.sender_id, receiver_ids, |connection_id| {
1109 self.peer
1110 .forward_send(request.sender_id, connection_id, request.payload.clone())
1111 });
1112 Ok(())
1113 }
1114
1115 async fn update_language_server(
1116 self: Arc<Server>,
1117 request: TypedEnvelope<proto::UpdateLanguageServer>,
1118 ) -> Result<()> {
1119 let receiver_ids = self.store().await.project_connection_ids(
1120 ProjectId::from_proto(request.payload.project_id),
1121 request.sender_id,
1122 )?;
1123 broadcast(request.sender_id, receiver_ids, |connection_id| {
1124 self.peer
1125 .forward_send(request.sender_id, connection_id, request.payload.clone())
1126 });
1127 Ok(())
1128 }
1129
1130 async fn forward_project_request<T>(
1131 self: Arc<Server>,
1132 request: TypedEnvelope<T>,
1133 response: Response<T>,
1134 ) -> Result<()>
1135 where
1136 T: EntityMessage + RequestMessage,
1137 {
1138 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1139 let host_connection_id = self
1140 .store()
1141 .await
1142 .read_project(project_id, request.sender_id)?
1143 .host_connection_id;
1144 let payload = self
1145 .peer
1146 .forward_request(request.sender_id, host_connection_id, request.payload)
1147 .await?;
1148
1149 // Ensure project still exists by the time we get the response from the host.
1150 self.store()
1151 .await
1152 .read_project(project_id, request.sender_id)?;
1153
1154 response.send(payload)?;
1155 Ok(())
1156 }
1157
1158 async fn save_buffer(
1159 self: Arc<Server>,
1160 request: TypedEnvelope<proto::SaveBuffer>,
1161 response: Response<proto::SaveBuffer>,
1162 ) -> Result<()> {
1163 let project_id = ProjectId::from_proto(request.payload.project_id);
1164 let host = self
1165 .store()
1166 .await
1167 .read_project(project_id, request.sender_id)?
1168 .host_connection_id;
1169 let response_payload = self
1170 .peer
1171 .forward_request(request.sender_id, host, request.payload.clone())
1172 .await?;
1173
1174 let mut guests = self
1175 .store()
1176 .await
1177 .read_project(project_id, request.sender_id)?
1178 .connection_ids();
1179 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1180 broadcast(host, guests, |conn_id| {
1181 self.peer
1182 .forward_send(host, conn_id, response_payload.clone())
1183 });
1184 response.send(response_payload)?;
1185 Ok(())
1186 }
1187
1188 async fn update_buffer(
1189 self: Arc<Server>,
1190 request: TypedEnvelope<proto::UpdateBuffer>,
1191 response: Response<proto::UpdateBuffer>,
1192 ) -> Result<()> {
1193 let project_id = ProjectId::from_proto(request.payload.project_id);
1194 let receiver_ids = {
1195 let mut store = self.store().await;
1196 store.register_project_activity(project_id, request.sender_id)?;
1197 store.project_connection_ids(project_id, request.sender_id)?
1198 };
1199
1200 broadcast(request.sender_id, receiver_ids, |connection_id| {
1201 self.peer
1202 .forward_send(request.sender_id, connection_id, request.payload.clone())
1203 });
1204 response.send(proto::Ack {})?;
1205 Ok(())
1206 }
1207
1208 async fn update_buffer_file(
1209 self: Arc<Server>,
1210 request: TypedEnvelope<proto::UpdateBufferFile>,
1211 ) -> Result<()> {
1212 let receiver_ids = self.store().await.project_connection_ids(
1213 ProjectId::from_proto(request.payload.project_id),
1214 request.sender_id,
1215 )?;
1216 broadcast(request.sender_id, receiver_ids, |connection_id| {
1217 self.peer
1218 .forward_send(request.sender_id, connection_id, request.payload.clone())
1219 });
1220 Ok(())
1221 }
1222
1223 async fn buffer_reloaded(
1224 self: Arc<Server>,
1225 request: TypedEnvelope<proto::BufferReloaded>,
1226 ) -> Result<()> {
1227 let receiver_ids = self.store().await.project_connection_ids(
1228 ProjectId::from_proto(request.payload.project_id),
1229 request.sender_id,
1230 )?;
1231 broadcast(request.sender_id, receiver_ids, |connection_id| {
1232 self.peer
1233 .forward_send(request.sender_id, connection_id, request.payload.clone())
1234 });
1235 Ok(())
1236 }
1237
1238 async fn buffer_saved(
1239 self: Arc<Server>,
1240 request: TypedEnvelope<proto::BufferSaved>,
1241 ) -> Result<()> {
1242 let receiver_ids = self.store().await.project_connection_ids(
1243 ProjectId::from_proto(request.payload.project_id),
1244 request.sender_id,
1245 )?;
1246 broadcast(request.sender_id, receiver_ids, |connection_id| {
1247 self.peer
1248 .forward_send(request.sender_id, connection_id, request.payload.clone())
1249 });
1250 Ok(())
1251 }
1252
1253 async fn follow(
1254 self: Arc<Self>,
1255 request: TypedEnvelope<proto::Follow>,
1256 response: Response<proto::Follow>,
1257 ) -> Result<()> {
1258 let project_id = ProjectId::from_proto(request.payload.project_id);
1259 let leader_id = ConnectionId(request.payload.leader_id);
1260 let follower_id = request.sender_id;
1261 {
1262 let mut store = self.store().await;
1263 if !store
1264 .project_connection_ids(project_id, follower_id)?
1265 .contains(&leader_id)
1266 {
1267 Err(anyhow!("no such peer"))?;
1268 }
1269
1270 store.register_project_activity(project_id, follower_id)?;
1271 }
1272
1273 let mut response_payload = self
1274 .peer
1275 .forward_request(request.sender_id, leader_id, request.payload)
1276 .await?;
1277 response_payload
1278 .views
1279 .retain(|view| view.leader_id != Some(follower_id.0));
1280 response.send(response_payload)?;
1281 Ok(())
1282 }
1283
1284 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1285 let project_id = ProjectId::from_proto(request.payload.project_id);
1286 let leader_id = ConnectionId(request.payload.leader_id);
1287 let mut store = self.store().await;
1288 if !store
1289 .project_connection_ids(project_id, request.sender_id)?
1290 .contains(&leader_id)
1291 {
1292 Err(anyhow!("no such peer"))?;
1293 }
1294 store.register_project_activity(project_id, request.sender_id)?;
1295 self.peer
1296 .forward_send(request.sender_id, leader_id, request.payload)?;
1297 Ok(())
1298 }
1299
1300 async fn update_followers(
1301 self: Arc<Self>,
1302 request: TypedEnvelope<proto::UpdateFollowers>,
1303 ) -> Result<()> {
1304 let project_id = ProjectId::from_proto(request.payload.project_id);
1305 let mut store = self.store().await;
1306 store.register_project_activity(project_id, request.sender_id)?;
1307 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1308 let leader_id = request
1309 .payload
1310 .variant
1311 .as_ref()
1312 .and_then(|variant| match variant {
1313 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1314 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1315 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1316 });
1317 for follower_id in &request.payload.follower_ids {
1318 let follower_id = ConnectionId(*follower_id);
1319 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1320 self.peer
1321 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1322 }
1323 }
1324 Ok(())
1325 }
1326
1327 async fn get_channels(
1328 self: Arc<Server>,
1329 request: TypedEnvelope<proto::GetChannels>,
1330 response: Response<proto::GetChannels>,
1331 ) -> Result<()> {
1332 let user_id = self
1333 .store()
1334 .await
1335 .user_id_for_connection(request.sender_id)?;
1336 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1337 response.send(proto::GetChannelsResponse {
1338 channels: channels
1339 .into_iter()
1340 .map(|chan| proto::Channel {
1341 id: chan.id.to_proto(),
1342 name: chan.name,
1343 })
1344 .collect(),
1345 })?;
1346 Ok(())
1347 }
1348
1349 async fn get_users(
1350 self: Arc<Server>,
1351 request: TypedEnvelope<proto::GetUsers>,
1352 response: Response<proto::GetUsers>,
1353 ) -> Result<()> {
1354 let user_ids = request
1355 .payload
1356 .user_ids
1357 .into_iter()
1358 .map(UserId::from_proto)
1359 .collect();
1360 let users = self
1361 .app_state
1362 .db
1363 .get_users_by_ids(user_ids)
1364 .await?
1365 .into_iter()
1366 .map(|user| proto::User {
1367 id: user.id.to_proto(),
1368 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1369 github_login: user.github_login,
1370 })
1371 .collect();
1372 response.send(proto::UsersResponse { users })?;
1373 Ok(())
1374 }
1375
1376 async fn fuzzy_search_users(
1377 self: Arc<Server>,
1378 request: TypedEnvelope<proto::FuzzySearchUsers>,
1379 response: Response<proto::FuzzySearchUsers>,
1380 ) -> Result<()> {
1381 let user_id = self
1382 .store()
1383 .await
1384 .user_id_for_connection(request.sender_id)?;
1385 let query = request.payload.query;
1386 let db = &self.app_state.db;
1387 let users = match query.len() {
1388 0 => vec![],
1389 1 | 2 => db
1390 .get_user_by_github_login(&query)
1391 .await?
1392 .into_iter()
1393 .collect(),
1394 _ => db.fuzzy_search_users(&query, 10).await?,
1395 };
1396 let users = users
1397 .into_iter()
1398 .filter(|user| user.id != user_id)
1399 .map(|user| proto::User {
1400 id: user.id.to_proto(),
1401 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1402 github_login: user.github_login,
1403 })
1404 .collect();
1405 response.send(proto::UsersResponse { users })?;
1406 Ok(())
1407 }
1408
1409 async fn request_contact(
1410 self: Arc<Server>,
1411 request: TypedEnvelope<proto::RequestContact>,
1412 response: Response<proto::RequestContact>,
1413 ) -> Result<()> {
1414 let requester_id = self
1415 .store()
1416 .await
1417 .user_id_for_connection(request.sender_id)?;
1418 let responder_id = UserId::from_proto(request.payload.responder_id);
1419 if requester_id == responder_id {
1420 return Err(anyhow!("cannot add yourself as a contact"))?;
1421 }
1422
1423 self.app_state
1424 .db
1425 .send_contact_request(requester_id, responder_id)
1426 .await?;
1427
1428 // Update outgoing contact requests of requester
1429 let mut update = proto::UpdateContacts::default();
1430 update.outgoing_requests.push(responder_id.to_proto());
1431 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1432 self.peer.send(connection_id, update.clone())?;
1433 }
1434
1435 // Update incoming contact requests of responder
1436 let mut update = proto::UpdateContacts::default();
1437 update
1438 .incoming_requests
1439 .push(proto::IncomingContactRequest {
1440 requester_id: requester_id.to_proto(),
1441 should_notify: true,
1442 });
1443 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1444 self.peer.send(connection_id, update.clone())?;
1445 }
1446
1447 response.send(proto::Ack {})?;
1448 Ok(())
1449 }
1450
1451 async fn respond_to_contact_request(
1452 self: Arc<Server>,
1453 request: TypedEnvelope<proto::RespondToContactRequest>,
1454 response: Response<proto::RespondToContactRequest>,
1455 ) -> Result<()> {
1456 let responder_id = self
1457 .store()
1458 .await
1459 .user_id_for_connection(request.sender_id)?;
1460 let requester_id = UserId::from_proto(request.payload.requester_id);
1461 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1462 self.app_state
1463 .db
1464 .dismiss_contact_notification(responder_id, requester_id)
1465 .await?;
1466 } else {
1467 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1468 self.app_state
1469 .db
1470 .respond_to_contact_request(responder_id, requester_id, accept)
1471 .await?;
1472
1473 let store = self.store().await;
1474 // Update responder with new contact
1475 let mut update = proto::UpdateContacts::default();
1476 if accept {
1477 update
1478 .contacts
1479 .push(store.contact_for_user(requester_id, false));
1480 }
1481 update
1482 .remove_incoming_requests
1483 .push(requester_id.to_proto());
1484 for connection_id in store.connection_ids_for_user(responder_id) {
1485 self.peer.send(connection_id, update.clone())?;
1486 }
1487
1488 // Update requester with new contact
1489 let mut update = proto::UpdateContacts::default();
1490 if accept {
1491 update
1492 .contacts
1493 .push(store.contact_for_user(responder_id, true));
1494 }
1495 update
1496 .remove_outgoing_requests
1497 .push(responder_id.to_proto());
1498 for connection_id in store.connection_ids_for_user(requester_id) {
1499 self.peer.send(connection_id, update.clone())?;
1500 }
1501 }
1502
1503 response.send(proto::Ack {})?;
1504 Ok(())
1505 }
1506
1507 async fn remove_contact(
1508 self: Arc<Server>,
1509 request: TypedEnvelope<proto::RemoveContact>,
1510 response: Response<proto::RemoveContact>,
1511 ) -> Result<()> {
1512 let requester_id = self
1513 .store()
1514 .await
1515 .user_id_for_connection(request.sender_id)?;
1516 let responder_id = UserId::from_proto(request.payload.user_id);
1517 self.app_state
1518 .db
1519 .remove_contact(requester_id, responder_id)
1520 .await?;
1521
1522 // Update outgoing contact requests of requester
1523 let mut update = proto::UpdateContacts::default();
1524 update
1525 .remove_outgoing_requests
1526 .push(responder_id.to_proto());
1527 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1528 self.peer.send(connection_id, update.clone())?;
1529 }
1530
1531 // Update incoming contact requests of responder
1532 let mut update = proto::UpdateContacts::default();
1533 update
1534 .remove_incoming_requests
1535 .push(requester_id.to_proto());
1536 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1537 self.peer.send(connection_id, update.clone())?;
1538 }
1539
1540 response.send(proto::Ack {})?;
1541 Ok(())
1542 }
1543
1544 async fn join_channel(
1545 self: Arc<Self>,
1546 request: TypedEnvelope<proto::JoinChannel>,
1547 response: Response<proto::JoinChannel>,
1548 ) -> Result<()> {
1549 let user_id = self
1550 .store()
1551 .await
1552 .user_id_for_connection(request.sender_id)?;
1553 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1554 if !self
1555 .app_state
1556 .db
1557 .can_user_access_channel(user_id, channel_id)
1558 .await?
1559 {
1560 Err(anyhow!("access denied"))?;
1561 }
1562
1563 self.store()
1564 .await
1565 .join_channel(request.sender_id, channel_id);
1566 let messages = self
1567 .app_state
1568 .db
1569 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1570 .await?
1571 .into_iter()
1572 .map(|msg| proto::ChannelMessage {
1573 id: msg.id.to_proto(),
1574 body: msg.body,
1575 timestamp: msg.sent_at.unix_timestamp() as u64,
1576 sender_id: msg.sender_id.to_proto(),
1577 nonce: Some(msg.nonce.as_u128().into()),
1578 })
1579 .collect::<Vec<_>>();
1580 response.send(proto::JoinChannelResponse {
1581 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1582 messages,
1583 })?;
1584 Ok(())
1585 }
1586
1587 async fn leave_channel(
1588 self: Arc<Self>,
1589 request: TypedEnvelope<proto::LeaveChannel>,
1590 ) -> Result<()> {
1591 let user_id = self
1592 .store()
1593 .await
1594 .user_id_for_connection(request.sender_id)?;
1595 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1596 if !self
1597 .app_state
1598 .db
1599 .can_user_access_channel(user_id, channel_id)
1600 .await?
1601 {
1602 Err(anyhow!("access denied"))?;
1603 }
1604
1605 self.store()
1606 .await
1607 .leave_channel(request.sender_id, channel_id);
1608
1609 Ok(())
1610 }
1611
1612 async fn send_channel_message(
1613 self: Arc<Self>,
1614 request: TypedEnvelope<proto::SendChannelMessage>,
1615 response: Response<proto::SendChannelMessage>,
1616 ) -> Result<()> {
1617 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1618 let user_id;
1619 let connection_ids;
1620 {
1621 let state = self.store().await;
1622 user_id = state.user_id_for_connection(request.sender_id)?;
1623 connection_ids = state.channel_connection_ids(channel_id)?;
1624 }
1625
1626 // Validate the message body.
1627 let body = request.payload.body.trim().to_string();
1628 if body.len() > MAX_MESSAGE_LEN {
1629 return Err(anyhow!("message is too long"))?;
1630 }
1631 if body.is_empty() {
1632 return Err(anyhow!("message can't be blank"))?;
1633 }
1634
1635 let timestamp = OffsetDateTime::now_utc();
1636 let nonce = request
1637 .payload
1638 .nonce
1639 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1640
1641 let message_id = self
1642 .app_state
1643 .db
1644 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1645 .await?
1646 .to_proto();
1647 let message = proto::ChannelMessage {
1648 sender_id: user_id.to_proto(),
1649 id: message_id,
1650 body,
1651 timestamp: timestamp.unix_timestamp() as u64,
1652 nonce: Some(nonce),
1653 };
1654 broadcast(request.sender_id, connection_ids, |conn_id| {
1655 self.peer.send(
1656 conn_id,
1657 proto::ChannelMessageSent {
1658 channel_id: channel_id.to_proto(),
1659 message: Some(message.clone()),
1660 },
1661 )
1662 });
1663 response.send(proto::SendChannelMessageResponse {
1664 message: Some(message),
1665 })?;
1666 Ok(())
1667 }
1668
1669 async fn get_channel_messages(
1670 self: Arc<Self>,
1671 request: TypedEnvelope<proto::GetChannelMessages>,
1672 response: Response<proto::GetChannelMessages>,
1673 ) -> Result<()> {
1674 let user_id = self
1675 .store()
1676 .await
1677 .user_id_for_connection(request.sender_id)?;
1678 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1679 if !self
1680 .app_state
1681 .db
1682 .can_user_access_channel(user_id, channel_id)
1683 .await?
1684 {
1685 Err(anyhow!("access denied"))?;
1686 }
1687
1688 let messages = self
1689 .app_state
1690 .db
1691 .get_channel_messages(
1692 channel_id,
1693 MESSAGE_COUNT_PER_PAGE,
1694 Some(MessageId::from_proto(request.payload.before_message_id)),
1695 )
1696 .await?
1697 .into_iter()
1698 .map(|msg| proto::ChannelMessage {
1699 id: msg.id.to_proto(),
1700 body: msg.body,
1701 timestamp: msg.sent_at.unix_timestamp() as u64,
1702 sender_id: msg.sender_id.to_proto(),
1703 nonce: Some(msg.nonce.as_u128().into()),
1704 })
1705 .collect::<Vec<_>>();
1706 response.send(proto::GetChannelMessagesResponse {
1707 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1708 messages,
1709 })?;
1710 Ok(())
1711 }
1712
1713 pub(crate) async fn store<'a>(&'a self) -> StoreGuard<'a> {
1714 #[cfg(test)]
1715 tokio::task::yield_now().await;
1716 let guard = self.store.lock().await;
1717 #[cfg(test)]
1718 tokio::task::yield_now().await;
1719 StoreGuard {
1720 guard,
1721 _not_send: PhantomData,
1722 }
1723 }
1724
1725 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1726 ServerSnapshot {
1727 store: self.store().await,
1728 peer: &self.peer,
1729 }
1730 }
1731}
1732
1733impl<'a> Deref for StoreGuard<'a> {
1734 type Target = Store;
1735
1736 fn deref(&self) -> &Self::Target {
1737 &*self.guard
1738 }
1739}
1740
1741impl<'a> DerefMut for StoreGuard<'a> {
1742 fn deref_mut(&mut self) -> &mut Self::Target {
1743 &mut *self.guard
1744 }
1745}
1746
1747impl<'a> Drop for StoreGuard<'a> {
1748 fn drop(&mut self) {
1749 #[cfg(test)]
1750 self.check_invariants();
1751 }
1752}
1753
1754impl Executor for RealExecutor {
1755 type Sleep = Sleep;
1756
1757 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1758 tokio::task::spawn(future);
1759 }
1760
1761 fn sleep(&self, duration: Duration) -> Self::Sleep {
1762 tokio::time::sleep(duration)
1763 }
1764}
1765
1766fn broadcast<F>(
1767 sender_id: ConnectionId,
1768 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1769 mut f: F,
1770) where
1771 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1772{
1773 for receiver_id in receiver_ids {
1774 if receiver_id != sender_id {
1775 f(receiver_id).trace_err();
1776 }
1777 }
1778}
1779
1780lazy_static! {
1781 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1782}
1783
1784pub struct ProtocolVersion(u32);
1785
1786impl Header for ProtocolVersion {
1787 fn name() -> &'static HeaderName {
1788 &ZED_PROTOCOL_VERSION
1789 }
1790
1791 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1792 where
1793 Self: Sized,
1794 I: Iterator<Item = &'i axum::http::HeaderValue>,
1795 {
1796 let version = values
1797 .next()
1798 .ok_or_else(|| axum::headers::Error::invalid())?
1799 .to_str()
1800 .map_err(|_| axum::headers::Error::invalid())?
1801 .parse()
1802 .map_err(|_| axum::headers::Error::invalid())?;
1803 Ok(Self(version))
1804 }
1805
1806 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1807 values.extend([self.0.to_string().parse().unwrap()]);
1808 }
1809}
1810
1811pub fn routes(server: Arc<Server>) -> Router<Body> {
1812 Router::new()
1813 .route("/rpc", get(handle_websocket_request))
1814 .layer(
1815 ServiceBuilder::new()
1816 .layer(Extension(server.app_state.clone()))
1817 .layer(middleware::from_fn(auth::validate_header)),
1818 )
1819 .route("/metrics", get(handle_metrics))
1820 .layer(Extension(server))
1821}
1822
1823pub async fn handle_websocket_request(
1824 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1825 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1826 Extension(server): Extension<Arc<Server>>,
1827 Extension(user): Extension<User>,
1828 ws: WebSocketUpgrade,
1829) -> axum::response::Response {
1830 if protocol_version != rpc::PROTOCOL_VERSION {
1831 return (
1832 StatusCode::UPGRADE_REQUIRED,
1833 "client must be upgraded".to_string(),
1834 )
1835 .into_response();
1836 }
1837 let socket_address = socket_address.to_string();
1838 ws.on_upgrade(move |socket| {
1839 use util::ResultExt;
1840 let socket = socket
1841 .map_ok(to_tungstenite_message)
1842 .err_into()
1843 .with(|message| async move { Ok(to_axum_message(message)) });
1844 let connection = Connection::new(Box::pin(socket));
1845 async move {
1846 server
1847 .handle_connection(connection, socket_address, user, None, RealExecutor)
1848 .await
1849 .log_err();
1850 }
1851 })
1852}
1853
1854pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1855 // We call `store_mut` here for its side effects of updating metrics.
1856 let metrics = server.store().await.metrics();
1857 METRIC_CONNECTIONS.set(metrics.connections as _);
1858 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1859 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1860 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1861
1862 let encoder = prometheus::TextEncoder::new();
1863 let metric_families = prometheus::gather();
1864 match encoder.encode_to_string(&metric_families) {
1865 Ok(string) => (StatusCode::OK, string).into_response(),
1866 Err(error) => (
1867 StatusCode::INTERNAL_SERVER_ERROR,
1868 format!("failed to encode metrics {:?}", error),
1869 )
1870 .into_response(),
1871 }
1872}
1873
1874fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1875 match message {
1876 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1877 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1878 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1879 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1880 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1881 code: frame.code.into(),
1882 reason: frame.reason,
1883 })),
1884 }
1885}
1886
1887fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1888 match message {
1889 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1890 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1891 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1892 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1893 AxumMessage::Close(frame) => {
1894 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1895 code: frame.code.into(),
1896 reason: frame.reason,
1897 }))
1898 }
1899 }
1900}
1901
1902pub trait ResultExt {
1903 type Ok;
1904
1905 fn trace_err(self) -> Option<Self::Ok>;
1906}
1907
1908impl<T, E> ResultExt for Result<T, E>
1909where
1910 E: std::fmt::Debug,
1911{
1912 type Ok = T;
1913
1914 fn trace_err(self) -> Option<T> {
1915 match self {
1916 Ok(value) => Some(value),
1917 Err(error) => {
1918 tracing::error!("{:?}", error);
1919 None
1920 }
1921 }
1922 }
1923}