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::GetTypeDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
170 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
171 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
172 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
173 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
176 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
177 .add_request_handler(
178 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
179 )
180 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
181 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
182 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
183 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
184 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
185 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
187 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
190 .add_message_handler(Server::create_buffer_for_peer)
191 .add_request_handler(Server::update_buffer)
192 .add_message_handler(Server::update_buffer_file)
193 .add_message_handler(Server::buffer_reloaded)
194 .add_message_handler(Server::buffer_saved)
195 .add_request_handler(Server::save_buffer)
196 .add_request_handler(Server::get_channels)
197 .add_request_handler(Server::get_users)
198 .add_request_handler(Server::fuzzy_search_users)
199 .add_request_handler(Server::request_contact)
200 .add_request_handler(Server::remove_contact)
201 .add_request_handler(Server::respond_to_contact_request)
202 .add_request_handler(Server::join_channel)
203 .add_message_handler(Server::leave_channel)
204 .add_request_handler(Server::send_channel_message)
205 .add_request_handler(Server::follow)
206 .add_message_handler(Server::unfollow)
207 .add_message_handler(Server::update_followers)
208 .add_request_handler(Server::get_channel_messages);
209
210 Arc::new(server)
211 }
212
213 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
214 where
215 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
216 Fut: 'static + Send + Future<Output = Result<()>>,
217 M: EnvelopedMessage,
218 {
219 let prev_handler = self.handlers.insert(
220 TypeId::of::<M>(),
221 Box::new(move |server, envelope| {
222 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
223 let span = info_span!(
224 "handle message",
225 payload_type = envelope.payload_type_name()
226 );
227 span.in_scope(|| {
228 tracing::info!(
229 payload_type = envelope.payload_type_name(),
230 "message received"
231 );
232 });
233 let future = (handler)(server, *envelope);
234 async move {
235 if let Err(error) = future.await {
236 tracing::error!(%error, "error handling message");
237 }
238 }
239 .instrument(span)
240 .boxed()
241 }),
242 );
243 if prev_handler.is_some() {
244 panic!("registered a handler for the same message twice");
245 }
246 self
247 }
248
249 /// Handle a request while holding a lock to the store. This is useful when we're registering
250 /// a connection but we want to respond on the connection before anybody else can send on it.
251 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
252 where
253 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
254 Fut: Send + Future<Output = Result<()>>,
255 M: RequestMessage,
256 {
257 let handler = Arc::new(handler);
258 self.add_message_handler(move |server, envelope| {
259 let receipt = envelope.receipt();
260 let handler = handler.clone();
261 async move {
262 let responded = Arc::new(AtomicBool::default());
263 let response = Response {
264 server: server.clone(),
265 responded: responded.clone(),
266 receipt: envelope.receipt(),
267 };
268 match (handler)(server.clone(), envelope, response).await {
269 Ok(()) => {
270 if responded.load(std::sync::atomic::Ordering::SeqCst) {
271 Ok(())
272 } else {
273 Err(anyhow!("handler did not send a response"))?
274 }
275 }
276 Err(error) => {
277 server.peer.respond_with_error(
278 receipt,
279 proto::Error {
280 message: error.to_string(),
281 },
282 )?;
283 Err(error)
284 }
285 }
286 }
287 })
288 }
289
290 /// Start a long lived task that records which users are active in which projects.
291 pub fn start_recording_project_activity<E: 'static + Executor>(
292 self: &Arc<Self>,
293 interval: Duration,
294 executor: E,
295 ) {
296 executor.spawn_detached({
297 let this = Arc::downgrade(self);
298 let executor = executor.clone();
299 async move {
300 let mut period_start = OffsetDateTime::now_utc();
301 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
302 loop {
303 let sleep = executor.sleep(interval);
304 sleep.await;
305 let this = if let Some(this) = this.upgrade() {
306 this
307 } else {
308 break;
309 };
310
311 active_projects.clear();
312 active_projects.extend(this.store().await.projects().flat_map(
313 |(project_id, project)| {
314 project.guests.values().chain([&project.host]).filter_map(
315 |collaborator| {
316 if !collaborator.admin
317 && collaborator
318 .last_activity
319 .map_or(false, |activity| activity > period_start)
320 {
321 Some((collaborator.user_id, *project_id))
322 } else {
323 None
324 }
325 },
326 )
327 },
328 ));
329
330 let period_end = OffsetDateTime::now_utc();
331 this.app_state
332 .db
333 .record_user_activity(period_start..period_end, &active_projects)
334 .await
335 .trace_err();
336 period_start = period_end;
337 }
338 }
339 });
340 }
341
342 pub fn handle_connection<E: Executor>(
343 self: &Arc<Self>,
344 connection: Connection,
345 address: String,
346 user: User,
347 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
348 executor: E,
349 ) -> impl Future<Output = Result<()>> {
350 let mut this = self.clone();
351 let user_id = user.id;
352 let login = user.github_login;
353 let span = info_span!("handle connection", %user_id, %login, %address);
354 async move {
355 let (connection_id, handle_io, mut incoming_rx) = this
356 .peer
357 .add_connection(connection, {
358 let executor = executor.clone();
359 move |duration| {
360 let timer = executor.sleep(duration);
361 async move {
362 timer.await;
363 }
364 }
365 })
366 .await;
367
368 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
369
370 if let Some(send_connection_id) = send_connection_id.as_mut() {
371 let _ = send_connection_id.send(connection_id).await;
372 }
373
374 if !user.connected_once {
375 this.peer.send(connection_id, proto::ShowContacts {})?;
376 this.app_state.db.set_user_connected_once(user_id, true).await?;
377 }
378
379 let (contacts, invite_code) = future::try_join(
380 this.app_state.db.get_contacts(user_id),
381 this.app_state.db.get_invite_code_for_user(user_id)
382 ).await?;
383
384 {
385 let mut store = this.store().await;
386 store.add_connection(connection_id, user_id, user.admin);
387 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
388
389 if let Some((code, count)) = invite_code {
390 this.peer.send(connection_id, proto::UpdateInviteInfo {
391 url: format!("{}{}", this.app_state.invite_link_prefix, code),
392 count,
393 })?;
394 }
395 }
396 this.update_user_contacts(user_id).await?;
397
398 let handle_io = handle_io.fuse();
399 futures::pin_mut!(handle_io);
400
401 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
402 // This prevents deadlocks when e.g., client A performs a request to client B and
403 // client B performs a request to client A. If both clients stop processing further
404 // messages until their respective request completes, they won't have a chance to
405 // respond to the other client's request and cause a deadlock.
406 //
407 // This arrangement ensures we will attempt to process earlier messages first, but fall
408 // back to processing messages arrived later in the spirit of making progress.
409 let mut foreground_message_handlers = FuturesUnordered::new();
410 loop {
411 let next_message = incoming_rx.next().fuse();
412 futures::pin_mut!(next_message);
413 futures::select_biased! {
414 result = handle_io => {
415 if let Err(error) = result {
416 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
417 }
418 break;
419 }
420 _ = foreground_message_handlers.next() => {}
421 message = next_message => {
422 if let Some(message) = message {
423 let type_name = message.payload_type_name();
424 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
425 let span_enter = span.enter();
426 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
427 let notifications = this.notifications.clone();
428 let is_background = message.is_background();
429 let handle_message = (handler)(this.clone(), message);
430
431 drop(span_enter);
432 let handle_message = async move {
433 handle_message.await;
434 if let Some(mut notifications) = notifications {
435 let _ = notifications.send(()).await;
436 }
437 }.instrument(span);
438
439 if is_background {
440 executor.spawn_detached(handle_message);
441 } else {
442 foreground_message_handlers.push(handle_message);
443 }
444 } else {
445 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
446 }
447 } else {
448 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
449 break;
450 }
451 }
452 }
453 }
454
455 drop(foreground_message_handlers);
456 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
457 if let Err(error) = this.sign_out(connection_id).await {
458 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
459 }
460
461 Ok(())
462 }.instrument(span)
463 }
464
465 #[instrument(skip(self), err)]
466 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
467 self.peer.disconnect(connection_id);
468
469 let mut projects_to_unregister = Vec::new();
470 let removed_user_id;
471 {
472 let mut store = self.store().await;
473 let removed_connection = store.remove_connection(connection_id)?;
474
475 for (project_id, project) in removed_connection.hosted_projects {
476 projects_to_unregister.push(project_id);
477 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
478 self.peer.send(
479 conn_id,
480 proto::UnregisterProject {
481 project_id: project_id.to_proto(),
482 },
483 )
484 });
485
486 for (_, receipts) in project.join_requests {
487 for receipt in receipts {
488 self.peer.respond(
489 receipt,
490 proto::JoinProjectResponse {
491 variant: Some(proto::join_project_response::Variant::Decline(
492 proto::join_project_response::Decline {
493 reason: proto::join_project_response::decline::Reason::WentOffline as i32
494 },
495 )),
496 },
497 )?;
498 }
499 }
500 }
501
502 for project_id in removed_connection.guest_project_ids {
503 if let Some(project) = store.project(project_id).trace_err() {
504 broadcast(connection_id, project.connection_ids(), |conn_id| {
505 self.peer.send(
506 conn_id,
507 proto::RemoveProjectCollaborator {
508 project_id: project_id.to_proto(),
509 peer_id: connection_id.0,
510 },
511 )
512 });
513 if project.guests.is_empty() {
514 self.peer
515 .send(
516 project.host_connection_id,
517 proto::ProjectUnshared {
518 project_id: project_id.to_proto(),
519 },
520 )
521 .trace_err();
522 }
523 }
524 }
525
526 removed_user_id = removed_connection.user_id;
527 };
528
529 self.update_user_contacts(removed_user_id).await.trace_err();
530
531 for project_id in projects_to_unregister {
532 self.app_state
533 .db
534 .unregister_project(project_id)
535 .await
536 .trace_err();
537 }
538
539 Ok(())
540 }
541
542 pub async fn invite_code_redeemed(
543 self: &Arc<Self>,
544 inviter_id: UserId,
545 invitee_id: UserId,
546 ) -> Result<()> {
547 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
548 if let Some(code) = &user.invite_code {
549 let store = self.store().await;
550 let invitee_contact = store.contact_for_user(invitee_id, true);
551 for connection_id in store.connection_ids_for_user(inviter_id) {
552 self.peer.send(
553 connection_id,
554 proto::UpdateContacts {
555 contacts: vec![invitee_contact.clone()],
556 ..Default::default()
557 },
558 )?;
559 self.peer.send(
560 connection_id,
561 proto::UpdateInviteInfo {
562 url: format!("{}{}", self.app_state.invite_link_prefix, &code),
563 count: user.invite_count as u32,
564 },
565 )?;
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().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().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().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().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 .map(|(id, worktree)| proto::WorktreeMetadata {
798 id: *id,
799 root_name: worktree.root_name.clone(),
800 visible: worktree.visible,
801 })
802 .collect::<Vec<_>>();
803
804 // Add all guests other than the requesting user's own connections as collaborators
805 for (guest_conn_id, guest) in &project.guests {
806 if receipts_with_replica_ids
807 .iter()
808 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
809 {
810 collaborators.push(proto::Collaborator {
811 peer_id: guest_conn_id.0,
812 replica_id: guest.replica_id as u32,
813 user_id: guest.user_id.to_proto(),
814 });
815 }
816 }
817
818 for conn_id in project.connection_ids() {
819 for (receipt, replica_id) in &receipts_with_replica_ids {
820 if conn_id != receipt.sender_id {
821 self.peer.send(
822 conn_id,
823 proto::AddProjectCollaborator {
824 project_id: project_id.to_proto(),
825 collaborator: Some(proto::Collaborator {
826 peer_id: receipt.sender_id.0,
827 replica_id: *replica_id as u32,
828 user_id: guest_user_id.to_proto(),
829 }),
830 },
831 )?;
832 }
833 }
834 }
835
836 // First, we send the metadata associated with each worktree.
837 for (receipt, replica_id) in &receipts_with_replica_ids {
838 self.peer.respond(
839 *receipt,
840 proto::JoinProjectResponse {
841 variant: Some(proto::join_project_response::Variant::Accept(
842 proto::join_project_response::Accept {
843 worktrees: worktrees.clone(),
844 replica_id: *replica_id as u32,
845 collaborators: collaborators.clone(),
846 language_servers: project.language_servers.clone(),
847 },
848 )),
849 },
850 )?;
851 }
852
853 for (worktree_id, worktree) in &project.worktrees {
854 #[cfg(any(test, feature = "test-support"))]
855 const MAX_CHUNK_SIZE: usize = 2;
856 #[cfg(not(any(test, feature = "test-support")))]
857 const MAX_CHUNK_SIZE: usize = 256;
858
859 // Stream this worktree's entries.
860 let message = proto::UpdateWorktree {
861 project_id: project_id.to_proto(),
862 worktree_id: *worktree_id,
863 root_name: worktree.root_name.clone(),
864 updated_entries: worktree.entries.values().cloned().collect(),
865 removed_entries: Default::default(),
866 scan_id: worktree.scan_id,
867 is_last_update: worktree.is_complete,
868 };
869 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
870 for (receipt, _) in &receipts_with_replica_ids {
871 self.peer.send(receipt.sender_id, update.clone())?;
872 }
873 }
874
875 // Stream this worktree's diagnostics.
876 for summary in worktree.diagnostic_summaries.values() {
877 for (receipt, _) in &receipts_with_replica_ids {
878 self.peer.send(
879 receipt.sender_id,
880 proto::UpdateDiagnosticSummary {
881 project_id: project_id.to_proto(),
882 worktree_id: *worktree_id,
883 summary: Some(summary.clone()),
884 },
885 )?;
886 }
887 }
888 }
889 }
890
891 self.update_user_contacts(host_user_id).await?;
892 Ok(())
893 }
894
895 async fn leave_project(
896 self: Arc<Server>,
897 request: TypedEnvelope<proto::LeaveProject>,
898 ) -> Result<()> {
899 let sender_id = request.sender_id;
900 let project_id = ProjectId::from_proto(request.payload.project_id);
901 let project;
902 {
903 let mut store = self.store().await;
904 project = store.leave_project(sender_id, project_id)?;
905 tracing::info!(
906 %project_id,
907 host_user_id = %project.host_user_id,
908 host_connection_id = %project.host_connection_id,
909 "leave project"
910 );
911
912 if project.remove_collaborator {
913 broadcast(sender_id, project.connection_ids, |conn_id| {
914 self.peer.send(
915 conn_id,
916 proto::RemoveProjectCollaborator {
917 project_id: project_id.to_proto(),
918 peer_id: sender_id.0,
919 },
920 )
921 });
922 }
923
924 if let Some(requester_id) = project.cancel_request {
925 self.peer.send(
926 project.host_connection_id,
927 proto::JoinProjectRequestCancelled {
928 project_id: project_id.to_proto(),
929 requester_id: requester_id.to_proto(),
930 },
931 )?;
932 }
933
934 if project.unshare {
935 self.peer.send(
936 project.host_connection_id,
937 proto::ProjectUnshared {
938 project_id: project_id.to_proto(),
939 },
940 )?;
941 }
942 }
943 self.update_user_contacts(project.host_user_id).await?;
944 Ok(())
945 }
946
947 async fn update_project(
948 self: Arc<Server>,
949 request: TypedEnvelope<proto::UpdateProject>,
950 ) -> Result<()> {
951 let project_id = ProjectId::from_proto(request.payload.project_id);
952 let user_id;
953 {
954 let mut state = self.store().await;
955 user_id = state.user_id_for_connection(request.sender_id)?;
956 let guest_connection_ids = state
957 .read_project(project_id, request.sender_id)?
958 .guest_connection_ids();
959 let unshared_project = state.update_project(
960 project_id,
961 &request.payload.worktrees,
962 request.payload.online,
963 request.sender_id,
964 )?;
965
966 if let Some(unshared_project) = unshared_project {
967 broadcast(
968 request.sender_id,
969 unshared_project.guests.keys().copied(),
970 |conn_id| {
971 self.peer.send(
972 conn_id,
973 proto::UnregisterProject {
974 project_id: project_id.to_proto(),
975 },
976 )
977 },
978 );
979 for (_, receipts) in unshared_project.pending_join_requests {
980 for receipt in receipts {
981 self.peer.respond(
982 receipt,
983 proto::JoinProjectResponse {
984 variant: Some(proto::join_project_response::Variant::Decline(
985 proto::join_project_response::Decline {
986 reason:
987 proto::join_project_response::decline::Reason::Closed
988 as i32,
989 },
990 )),
991 },
992 )?;
993 }
994 }
995 } else {
996 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
997 self.peer.forward_send(
998 request.sender_id,
999 connection_id,
1000 request.payload.clone(),
1001 )
1002 });
1003 }
1004 };
1005
1006 self.update_user_contacts(user_id).await?;
1007 Ok(())
1008 }
1009
1010 async fn register_project_activity(
1011 self: Arc<Server>,
1012 request: TypedEnvelope<proto::RegisterProjectActivity>,
1013 ) -> Result<()> {
1014 self.store().await.register_project_activity(
1015 ProjectId::from_proto(request.payload.project_id),
1016 request.sender_id,
1017 )?;
1018 Ok(())
1019 }
1020
1021 async fn update_worktree(
1022 self: Arc<Server>,
1023 request: TypedEnvelope<proto::UpdateWorktree>,
1024 response: Response<proto::UpdateWorktree>,
1025 ) -> Result<()> {
1026 let project_id = ProjectId::from_proto(request.payload.project_id);
1027 let worktree_id = request.payload.worktree_id;
1028 let (connection_ids, metadata_changed) = {
1029 let mut store = self.store().await;
1030 let (connection_ids, metadata_changed) = store.update_worktree(
1031 request.sender_id,
1032 project_id,
1033 worktree_id,
1034 &request.payload.root_name,
1035 &request.payload.removed_entries,
1036 &request.payload.updated_entries,
1037 request.payload.scan_id,
1038 request.payload.is_last_update,
1039 )?;
1040 (connection_ids, metadata_changed)
1041 };
1042
1043 broadcast(request.sender_id, connection_ids, |connection_id| {
1044 self.peer
1045 .forward_send(request.sender_id, connection_id, request.payload.clone())
1046 });
1047 if metadata_changed {
1048 let user_id = self
1049 .store()
1050 .await
1051 .user_id_for_connection(request.sender_id)?;
1052 self.update_user_contacts(user_id).await?;
1053 }
1054 response.send(proto::Ack {})?;
1055 Ok(())
1056 }
1057
1058 async fn update_worktree_extensions(
1059 self: Arc<Server>,
1060 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1061 ) -> Result<()> {
1062 let project_id = ProjectId::from_proto(request.payload.project_id);
1063 let worktree_id = request.payload.worktree_id;
1064 let extensions = request
1065 .payload
1066 .extensions
1067 .into_iter()
1068 .zip(request.payload.counts)
1069 .collect();
1070 self.app_state
1071 .db
1072 .update_worktree_extensions(project_id, worktree_id, extensions)
1073 .await?;
1074 Ok(())
1075 }
1076
1077 async fn update_diagnostic_summary(
1078 self: Arc<Server>,
1079 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1080 ) -> Result<()> {
1081 let summary = request
1082 .payload
1083 .summary
1084 .clone()
1085 .ok_or_else(|| anyhow!("invalid summary"))?;
1086 let receiver_ids = self.store().await.update_diagnostic_summary(
1087 ProjectId::from_proto(request.payload.project_id),
1088 request.payload.worktree_id,
1089 request.sender_id,
1090 summary,
1091 )?;
1092
1093 broadcast(request.sender_id, receiver_ids, |connection_id| {
1094 self.peer
1095 .forward_send(request.sender_id, connection_id, request.payload.clone())
1096 });
1097 Ok(())
1098 }
1099
1100 async fn start_language_server(
1101 self: Arc<Server>,
1102 request: TypedEnvelope<proto::StartLanguageServer>,
1103 ) -> Result<()> {
1104 let receiver_ids = self.store().await.start_language_server(
1105 ProjectId::from_proto(request.payload.project_id),
1106 request.sender_id,
1107 request
1108 .payload
1109 .server
1110 .clone()
1111 .ok_or_else(|| anyhow!("invalid language server"))?,
1112 )?;
1113 broadcast(request.sender_id, receiver_ids, |connection_id| {
1114 self.peer
1115 .forward_send(request.sender_id, connection_id, request.payload.clone())
1116 });
1117 Ok(())
1118 }
1119
1120 async fn update_language_server(
1121 self: Arc<Server>,
1122 request: TypedEnvelope<proto::UpdateLanguageServer>,
1123 ) -> Result<()> {
1124 let receiver_ids = self.store().await.project_connection_ids(
1125 ProjectId::from_proto(request.payload.project_id),
1126 request.sender_id,
1127 )?;
1128 broadcast(request.sender_id, receiver_ids, |connection_id| {
1129 self.peer
1130 .forward_send(request.sender_id, connection_id, request.payload.clone())
1131 });
1132 Ok(())
1133 }
1134
1135 async fn forward_project_request<T>(
1136 self: Arc<Server>,
1137 request: TypedEnvelope<T>,
1138 response: Response<T>,
1139 ) -> Result<()>
1140 where
1141 T: EntityMessage + RequestMessage,
1142 {
1143 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1144 let host_connection_id = self
1145 .store()
1146 .await
1147 .read_project(project_id, request.sender_id)?
1148 .host_connection_id;
1149 let payload = self
1150 .peer
1151 .forward_request(request.sender_id, host_connection_id, request.payload)
1152 .await?;
1153
1154 // Ensure project still exists by the time we get the response from the host.
1155 self.store()
1156 .await
1157 .read_project(project_id, request.sender_id)?;
1158
1159 response.send(payload)?;
1160 Ok(())
1161 }
1162
1163 async fn save_buffer(
1164 self: Arc<Server>,
1165 request: TypedEnvelope<proto::SaveBuffer>,
1166 response: Response<proto::SaveBuffer>,
1167 ) -> Result<()> {
1168 let project_id = ProjectId::from_proto(request.payload.project_id);
1169 let host = self
1170 .store()
1171 .await
1172 .read_project(project_id, request.sender_id)?
1173 .host_connection_id;
1174 let response_payload = self
1175 .peer
1176 .forward_request(request.sender_id, host, request.payload.clone())
1177 .await?;
1178
1179 let mut guests = self
1180 .store()
1181 .await
1182 .read_project(project_id, request.sender_id)?
1183 .connection_ids();
1184 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1185 broadcast(host, guests, |conn_id| {
1186 self.peer
1187 .forward_send(host, conn_id, response_payload.clone())
1188 });
1189 response.send(response_payload)?;
1190 Ok(())
1191 }
1192
1193 async fn create_buffer_for_peer(
1194 self: Arc<Server>,
1195 request: TypedEnvelope<proto::CreateBufferForPeer>,
1196 ) -> Result<()> {
1197 self.peer.forward_send(
1198 request.sender_id,
1199 ConnectionId(request.payload.peer_id),
1200 request.payload,
1201 )?;
1202 Ok(())
1203 }
1204
1205 async fn update_buffer(
1206 self: Arc<Server>,
1207 request: TypedEnvelope<proto::UpdateBuffer>,
1208 response: Response<proto::UpdateBuffer>,
1209 ) -> Result<()> {
1210 let project_id = ProjectId::from_proto(request.payload.project_id);
1211 let receiver_ids = {
1212 let mut store = self.store().await;
1213 store.register_project_activity(project_id, request.sender_id)?;
1214 store.project_connection_ids(project_id, request.sender_id)?
1215 };
1216
1217 broadcast(request.sender_id, receiver_ids, |connection_id| {
1218 self.peer
1219 .forward_send(request.sender_id, connection_id, request.payload.clone())
1220 });
1221 response.send(proto::Ack {})?;
1222 Ok(())
1223 }
1224
1225 async fn update_buffer_file(
1226 self: Arc<Server>,
1227 request: TypedEnvelope<proto::UpdateBufferFile>,
1228 ) -> Result<()> {
1229 let receiver_ids = self.store().await.project_connection_ids(
1230 ProjectId::from_proto(request.payload.project_id),
1231 request.sender_id,
1232 )?;
1233 broadcast(request.sender_id, receiver_ids, |connection_id| {
1234 self.peer
1235 .forward_send(request.sender_id, connection_id, request.payload.clone())
1236 });
1237 Ok(())
1238 }
1239
1240 async fn buffer_reloaded(
1241 self: Arc<Server>,
1242 request: TypedEnvelope<proto::BufferReloaded>,
1243 ) -> Result<()> {
1244 let receiver_ids = self.store().await.project_connection_ids(
1245 ProjectId::from_proto(request.payload.project_id),
1246 request.sender_id,
1247 )?;
1248 broadcast(request.sender_id, receiver_ids, |connection_id| {
1249 self.peer
1250 .forward_send(request.sender_id, connection_id, request.payload.clone())
1251 });
1252 Ok(())
1253 }
1254
1255 async fn buffer_saved(
1256 self: Arc<Server>,
1257 request: TypedEnvelope<proto::BufferSaved>,
1258 ) -> Result<()> {
1259 let receiver_ids = self.store().await.project_connection_ids(
1260 ProjectId::from_proto(request.payload.project_id),
1261 request.sender_id,
1262 )?;
1263 broadcast(request.sender_id, receiver_ids, |connection_id| {
1264 self.peer
1265 .forward_send(request.sender_id, connection_id, request.payload.clone())
1266 });
1267 Ok(())
1268 }
1269
1270 async fn follow(
1271 self: Arc<Self>,
1272 request: TypedEnvelope<proto::Follow>,
1273 response: Response<proto::Follow>,
1274 ) -> Result<()> {
1275 let project_id = ProjectId::from_proto(request.payload.project_id);
1276 let leader_id = ConnectionId(request.payload.leader_id);
1277 let follower_id = request.sender_id;
1278 {
1279 let mut store = self.store().await;
1280 if !store
1281 .project_connection_ids(project_id, follower_id)?
1282 .contains(&leader_id)
1283 {
1284 Err(anyhow!("no such peer"))?;
1285 }
1286
1287 store.register_project_activity(project_id, follower_id)?;
1288 }
1289
1290 let mut response_payload = self
1291 .peer
1292 .forward_request(request.sender_id, leader_id, request.payload)
1293 .await?;
1294 response_payload
1295 .views
1296 .retain(|view| view.leader_id != Some(follower_id.0));
1297 response.send(response_payload)?;
1298 Ok(())
1299 }
1300
1301 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1302 let project_id = ProjectId::from_proto(request.payload.project_id);
1303 let leader_id = ConnectionId(request.payload.leader_id);
1304 let mut store = self.store().await;
1305 if !store
1306 .project_connection_ids(project_id, request.sender_id)?
1307 .contains(&leader_id)
1308 {
1309 Err(anyhow!("no such peer"))?;
1310 }
1311 store.register_project_activity(project_id, request.sender_id)?;
1312 self.peer
1313 .forward_send(request.sender_id, leader_id, request.payload)?;
1314 Ok(())
1315 }
1316
1317 async fn update_followers(
1318 self: Arc<Self>,
1319 request: TypedEnvelope<proto::UpdateFollowers>,
1320 ) -> Result<()> {
1321 let project_id = ProjectId::from_proto(request.payload.project_id);
1322 let mut store = self.store().await;
1323 store.register_project_activity(project_id, request.sender_id)?;
1324 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1325 let leader_id = request
1326 .payload
1327 .variant
1328 .as_ref()
1329 .and_then(|variant| match variant {
1330 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1331 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1332 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1333 });
1334 for follower_id in &request.payload.follower_ids {
1335 let follower_id = ConnectionId(*follower_id);
1336 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1337 self.peer
1338 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1339 }
1340 }
1341 Ok(())
1342 }
1343
1344 async fn get_channels(
1345 self: Arc<Server>,
1346 request: TypedEnvelope<proto::GetChannels>,
1347 response: Response<proto::GetChannels>,
1348 ) -> Result<()> {
1349 let user_id = self
1350 .store()
1351 .await
1352 .user_id_for_connection(request.sender_id)?;
1353 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1354 response.send(proto::GetChannelsResponse {
1355 channels: channels
1356 .into_iter()
1357 .map(|chan| proto::Channel {
1358 id: chan.id.to_proto(),
1359 name: chan.name,
1360 })
1361 .collect(),
1362 })?;
1363 Ok(())
1364 }
1365
1366 async fn get_users(
1367 self: Arc<Server>,
1368 request: TypedEnvelope<proto::GetUsers>,
1369 response: Response<proto::GetUsers>,
1370 ) -> Result<()> {
1371 let user_ids = request
1372 .payload
1373 .user_ids
1374 .into_iter()
1375 .map(UserId::from_proto)
1376 .collect();
1377 let users = self
1378 .app_state
1379 .db
1380 .get_users_by_ids(user_ids)
1381 .await?
1382 .into_iter()
1383 .map(|user| proto::User {
1384 id: user.id.to_proto(),
1385 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1386 github_login: user.github_login,
1387 })
1388 .collect();
1389 response.send(proto::UsersResponse { users })?;
1390 Ok(())
1391 }
1392
1393 async fn fuzzy_search_users(
1394 self: Arc<Server>,
1395 request: TypedEnvelope<proto::FuzzySearchUsers>,
1396 response: Response<proto::FuzzySearchUsers>,
1397 ) -> Result<()> {
1398 let user_id = self
1399 .store()
1400 .await
1401 .user_id_for_connection(request.sender_id)?;
1402 let query = request.payload.query;
1403 let db = &self.app_state.db;
1404 let users = match query.len() {
1405 0 => vec![],
1406 1 | 2 => db
1407 .get_user_by_github_account(&query, None)
1408 .await?
1409 .into_iter()
1410 .collect(),
1411 _ => db.fuzzy_search_users(&query, 10).await?,
1412 };
1413 let users = users
1414 .into_iter()
1415 .filter(|user| user.id != user_id)
1416 .map(|user| proto::User {
1417 id: user.id.to_proto(),
1418 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1419 github_login: user.github_login,
1420 })
1421 .collect();
1422 response.send(proto::UsersResponse { users })?;
1423 Ok(())
1424 }
1425
1426 async fn request_contact(
1427 self: Arc<Server>,
1428 request: TypedEnvelope<proto::RequestContact>,
1429 response: Response<proto::RequestContact>,
1430 ) -> Result<()> {
1431 let requester_id = self
1432 .store()
1433 .await
1434 .user_id_for_connection(request.sender_id)?;
1435 let responder_id = UserId::from_proto(request.payload.responder_id);
1436 if requester_id == responder_id {
1437 return Err(anyhow!("cannot add yourself as a contact"))?;
1438 }
1439
1440 self.app_state
1441 .db
1442 .send_contact_request(requester_id, responder_id)
1443 .await?;
1444
1445 // Update outgoing contact requests of requester
1446 let mut update = proto::UpdateContacts::default();
1447 update.outgoing_requests.push(responder_id.to_proto());
1448 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1449 self.peer.send(connection_id, update.clone())?;
1450 }
1451
1452 // Update incoming contact requests of responder
1453 let mut update = proto::UpdateContacts::default();
1454 update
1455 .incoming_requests
1456 .push(proto::IncomingContactRequest {
1457 requester_id: requester_id.to_proto(),
1458 should_notify: true,
1459 });
1460 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1461 self.peer.send(connection_id, update.clone())?;
1462 }
1463
1464 response.send(proto::Ack {})?;
1465 Ok(())
1466 }
1467
1468 async fn respond_to_contact_request(
1469 self: Arc<Server>,
1470 request: TypedEnvelope<proto::RespondToContactRequest>,
1471 response: Response<proto::RespondToContactRequest>,
1472 ) -> Result<()> {
1473 let responder_id = self
1474 .store()
1475 .await
1476 .user_id_for_connection(request.sender_id)?;
1477 let requester_id = UserId::from_proto(request.payload.requester_id);
1478 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1479 self.app_state
1480 .db
1481 .dismiss_contact_notification(responder_id, requester_id)
1482 .await?;
1483 } else {
1484 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1485 self.app_state
1486 .db
1487 .respond_to_contact_request(responder_id, requester_id, accept)
1488 .await?;
1489
1490 let store = self.store().await;
1491 // Update responder with new contact
1492 let mut update = proto::UpdateContacts::default();
1493 if accept {
1494 update
1495 .contacts
1496 .push(store.contact_for_user(requester_id, false));
1497 }
1498 update
1499 .remove_incoming_requests
1500 .push(requester_id.to_proto());
1501 for connection_id in store.connection_ids_for_user(responder_id) {
1502 self.peer.send(connection_id, update.clone())?;
1503 }
1504
1505 // Update requester with new contact
1506 let mut update = proto::UpdateContacts::default();
1507 if accept {
1508 update
1509 .contacts
1510 .push(store.contact_for_user(responder_id, true));
1511 }
1512 update
1513 .remove_outgoing_requests
1514 .push(responder_id.to_proto());
1515 for connection_id in store.connection_ids_for_user(requester_id) {
1516 self.peer.send(connection_id, update.clone())?;
1517 }
1518 }
1519
1520 response.send(proto::Ack {})?;
1521 Ok(())
1522 }
1523
1524 async fn remove_contact(
1525 self: Arc<Server>,
1526 request: TypedEnvelope<proto::RemoveContact>,
1527 response: Response<proto::RemoveContact>,
1528 ) -> Result<()> {
1529 let requester_id = self
1530 .store()
1531 .await
1532 .user_id_for_connection(request.sender_id)?;
1533 let responder_id = UserId::from_proto(request.payload.user_id);
1534 self.app_state
1535 .db
1536 .remove_contact(requester_id, responder_id)
1537 .await?;
1538
1539 // Update outgoing contact requests of requester
1540 let mut update = proto::UpdateContacts::default();
1541 update
1542 .remove_outgoing_requests
1543 .push(responder_id.to_proto());
1544 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1545 self.peer.send(connection_id, update.clone())?;
1546 }
1547
1548 // Update incoming contact requests of responder
1549 let mut update = proto::UpdateContacts::default();
1550 update
1551 .remove_incoming_requests
1552 .push(requester_id.to_proto());
1553 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1554 self.peer.send(connection_id, update.clone())?;
1555 }
1556
1557 response.send(proto::Ack {})?;
1558 Ok(())
1559 }
1560
1561 async fn join_channel(
1562 self: Arc<Self>,
1563 request: TypedEnvelope<proto::JoinChannel>,
1564 response: Response<proto::JoinChannel>,
1565 ) -> Result<()> {
1566 let user_id = self
1567 .store()
1568 .await
1569 .user_id_for_connection(request.sender_id)?;
1570 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1571 if !self
1572 .app_state
1573 .db
1574 .can_user_access_channel(user_id, channel_id)
1575 .await?
1576 {
1577 Err(anyhow!("access denied"))?;
1578 }
1579
1580 self.store()
1581 .await
1582 .join_channel(request.sender_id, channel_id);
1583 let messages = self
1584 .app_state
1585 .db
1586 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1587 .await?
1588 .into_iter()
1589 .map(|msg| proto::ChannelMessage {
1590 id: msg.id.to_proto(),
1591 body: msg.body,
1592 timestamp: msg.sent_at.unix_timestamp() as u64,
1593 sender_id: msg.sender_id.to_proto(),
1594 nonce: Some(msg.nonce.as_u128().into()),
1595 })
1596 .collect::<Vec<_>>();
1597 response.send(proto::JoinChannelResponse {
1598 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1599 messages,
1600 })?;
1601 Ok(())
1602 }
1603
1604 async fn leave_channel(
1605 self: Arc<Self>,
1606 request: TypedEnvelope<proto::LeaveChannel>,
1607 ) -> Result<()> {
1608 let user_id = self
1609 .store()
1610 .await
1611 .user_id_for_connection(request.sender_id)?;
1612 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1613 if !self
1614 .app_state
1615 .db
1616 .can_user_access_channel(user_id, channel_id)
1617 .await?
1618 {
1619 Err(anyhow!("access denied"))?;
1620 }
1621
1622 self.store()
1623 .await
1624 .leave_channel(request.sender_id, channel_id);
1625
1626 Ok(())
1627 }
1628
1629 async fn send_channel_message(
1630 self: Arc<Self>,
1631 request: TypedEnvelope<proto::SendChannelMessage>,
1632 response: Response<proto::SendChannelMessage>,
1633 ) -> Result<()> {
1634 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1635 let user_id;
1636 let connection_ids;
1637 {
1638 let state = self.store().await;
1639 user_id = state.user_id_for_connection(request.sender_id)?;
1640 connection_ids = state.channel_connection_ids(channel_id)?;
1641 }
1642
1643 // Validate the message body.
1644 let body = request.payload.body.trim().to_string();
1645 if body.len() > MAX_MESSAGE_LEN {
1646 return Err(anyhow!("message is too long"))?;
1647 }
1648 if body.is_empty() {
1649 return Err(anyhow!("message can't be blank"))?;
1650 }
1651
1652 let timestamp = OffsetDateTime::now_utc();
1653 let nonce = request
1654 .payload
1655 .nonce
1656 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1657
1658 let message_id = self
1659 .app_state
1660 .db
1661 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1662 .await?
1663 .to_proto();
1664 let message = proto::ChannelMessage {
1665 sender_id: user_id.to_proto(),
1666 id: message_id,
1667 body,
1668 timestamp: timestamp.unix_timestamp() as u64,
1669 nonce: Some(nonce),
1670 };
1671 broadcast(request.sender_id, connection_ids, |conn_id| {
1672 self.peer.send(
1673 conn_id,
1674 proto::ChannelMessageSent {
1675 channel_id: channel_id.to_proto(),
1676 message: Some(message.clone()),
1677 },
1678 )
1679 });
1680 response.send(proto::SendChannelMessageResponse {
1681 message: Some(message),
1682 })?;
1683 Ok(())
1684 }
1685
1686 async fn get_channel_messages(
1687 self: Arc<Self>,
1688 request: TypedEnvelope<proto::GetChannelMessages>,
1689 response: Response<proto::GetChannelMessages>,
1690 ) -> Result<()> {
1691 let user_id = self
1692 .store()
1693 .await
1694 .user_id_for_connection(request.sender_id)?;
1695 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1696 if !self
1697 .app_state
1698 .db
1699 .can_user_access_channel(user_id, channel_id)
1700 .await?
1701 {
1702 Err(anyhow!("access denied"))?;
1703 }
1704
1705 let messages = self
1706 .app_state
1707 .db
1708 .get_channel_messages(
1709 channel_id,
1710 MESSAGE_COUNT_PER_PAGE,
1711 Some(MessageId::from_proto(request.payload.before_message_id)),
1712 )
1713 .await?
1714 .into_iter()
1715 .map(|msg| proto::ChannelMessage {
1716 id: msg.id.to_proto(),
1717 body: msg.body,
1718 timestamp: msg.sent_at.unix_timestamp() as u64,
1719 sender_id: msg.sender_id.to_proto(),
1720 nonce: Some(msg.nonce.as_u128().into()),
1721 })
1722 .collect::<Vec<_>>();
1723 response.send(proto::GetChannelMessagesResponse {
1724 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1725 messages,
1726 })?;
1727 Ok(())
1728 }
1729
1730 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1731 #[cfg(test)]
1732 tokio::task::yield_now().await;
1733 let guard = self.store.lock().await;
1734 #[cfg(test)]
1735 tokio::task::yield_now().await;
1736 StoreGuard {
1737 guard,
1738 _not_send: PhantomData,
1739 }
1740 }
1741
1742 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1743 ServerSnapshot {
1744 store: self.store().await,
1745 peer: &self.peer,
1746 }
1747 }
1748}
1749
1750impl<'a> Deref for StoreGuard<'a> {
1751 type Target = Store;
1752
1753 fn deref(&self) -> &Self::Target {
1754 &*self.guard
1755 }
1756}
1757
1758impl<'a> DerefMut for StoreGuard<'a> {
1759 fn deref_mut(&mut self) -> &mut Self::Target {
1760 &mut *self.guard
1761 }
1762}
1763
1764impl<'a> Drop for StoreGuard<'a> {
1765 fn drop(&mut self) {
1766 #[cfg(test)]
1767 self.check_invariants();
1768 }
1769}
1770
1771impl Executor for RealExecutor {
1772 type Sleep = Sleep;
1773
1774 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1775 tokio::task::spawn(future);
1776 }
1777
1778 fn sleep(&self, duration: Duration) -> Self::Sleep {
1779 tokio::time::sleep(duration)
1780 }
1781}
1782
1783fn broadcast<F>(
1784 sender_id: ConnectionId,
1785 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1786 mut f: F,
1787) where
1788 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1789{
1790 for receiver_id in receiver_ids {
1791 if receiver_id != sender_id {
1792 f(receiver_id).trace_err();
1793 }
1794 }
1795}
1796
1797lazy_static! {
1798 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1799}
1800
1801pub struct ProtocolVersion(u32);
1802
1803impl Header for ProtocolVersion {
1804 fn name() -> &'static HeaderName {
1805 &ZED_PROTOCOL_VERSION
1806 }
1807
1808 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1809 where
1810 Self: Sized,
1811 I: Iterator<Item = &'i axum::http::HeaderValue>,
1812 {
1813 let version = values
1814 .next()
1815 .ok_or_else(axum::headers::Error::invalid)?
1816 .to_str()
1817 .map_err(|_| axum::headers::Error::invalid())?
1818 .parse()
1819 .map_err(|_| axum::headers::Error::invalid())?;
1820 Ok(Self(version))
1821 }
1822
1823 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1824 values.extend([self.0.to_string().parse().unwrap()]);
1825 }
1826}
1827
1828pub fn routes(server: Arc<Server>) -> Router<Body> {
1829 Router::new()
1830 .route("/rpc", get(handle_websocket_request))
1831 .layer(
1832 ServiceBuilder::new()
1833 .layer(Extension(server.app_state.clone()))
1834 .layer(middleware::from_fn(auth::validate_header)),
1835 )
1836 .route("/metrics", get(handle_metrics))
1837 .layer(Extension(server))
1838}
1839
1840pub async fn handle_websocket_request(
1841 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1842 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1843 Extension(server): Extension<Arc<Server>>,
1844 Extension(user): Extension<User>,
1845 ws: WebSocketUpgrade,
1846) -> axum::response::Response {
1847 if protocol_version != rpc::PROTOCOL_VERSION {
1848 return (
1849 StatusCode::UPGRADE_REQUIRED,
1850 "client must be upgraded".to_string(),
1851 )
1852 .into_response();
1853 }
1854 let socket_address = socket_address.to_string();
1855 ws.on_upgrade(move |socket| {
1856 use util::ResultExt;
1857 let socket = socket
1858 .map_ok(to_tungstenite_message)
1859 .err_into()
1860 .with(|message| async move { Ok(to_axum_message(message)) });
1861 let connection = Connection::new(Box::pin(socket));
1862 async move {
1863 server
1864 .handle_connection(connection, socket_address, user, None, RealExecutor)
1865 .await
1866 .log_err();
1867 }
1868 })
1869}
1870
1871pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1872 // We call `store_mut` here for its side effects of updating metrics.
1873 let metrics = server.store().await.metrics();
1874 METRIC_CONNECTIONS.set(metrics.connections as _);
1875 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1876 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1877 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1878
1879 let encoder = prometheus::TextEncoder::new();
1880 let metric_families = prometheus::gather();
1881 match encoder.encode_to_string(&metric_families) {
1882 Ok(string) => (StatusCode::OK, string).into_response(),
1883 Err(error) => (
1884 StatusCode::INTERNAL_SERVER_ERROR,
1885 format!("failed to encode metrics {:?}", error),
1886 )
1887 .into_response(),
1888 }
1889}
1890
1891fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1892 match message {
1893 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1894 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1895 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1896 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1897 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1898 code: frame.code.into(),
1899 reason: frame.reason,
1900 })),
1901 }
1902}
1903
1904fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1905 match message {
1906 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1907 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1908 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1909 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1910 AxumMessage::Close(frame) => {
1911 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1912 code: frame.code.into(),
1913 reason: frame.reason,
1914 }))
1915 }
1916 }
1917}
1918
1919pub trait ResultExt {
1920 type Ok;
1921
1922 fn trace_err(self) -> Option<Self::Ok>;
1923}
1924
1925impl<T, E> ResultExt for Result<T, E>
1926where
1927 E: std::fmt::Debug,
1928{
1929 type Ok = T;
1930
1931 fn trace_err(self) -> Option<T> {
1932 match self {
1933 Ok(value) => Some(value),
1934 Err(error) => {
1935 tracing::error!("{:?}", error);
1936 None
1937 }
1938 }
1939 }
1940}