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 .add_message_handler(Server::update_diff_base)
210 .add_request_handler(Server::get_private_user_info);
211
212 Arc::new(server)
213 }
214
215 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
216 where
217 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
218 Fut: 'static + Send + Future<Output = Result<()>>,
219 M: EnvelopedMessage,
220 {
221 let prev_handler = self.handlers.insert(
222 TypeId::of::<M>(),
223 Box::new(move |server, envelope| {
224 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
225 let span = info_span!(
226 "handle message",
227 payload_type = envelope.payload_type_name()
228 );
229 span.in_scope(|| {
230 tracing::info!(
231 payload_type = envelope.payload_type_name(),
232 "message received"
233 );
234 });
235 let future = (handler)(server, *envelope);
236 async move {
237 if let Err(error) = future.await {
238 tracing::error!(%error, "error handling message");
239 }
240 }
241 .instrument(span)
242 .boxed()
243 }),
244 );
245 if prev_handler.is_some() {
246 panic!("registered a handler for the same message twice");
247 }
248 self
249 }
250
251 /// Handle a request while holding a lock to the store. This is useful when we're registering
252 /// a connection but we want to respond on the connection before anybody else can send on it.
253 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
254 where
255 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
256 Fut: Send + Future<Output = Result<()>>,
257 M: RequestMessage,
258 {
259 let handler = Arc::new(handler);
260 self.add_message_handler(move |server, envelope| {
261 let receipt = envelope.receipt();
262 let handler = handler.clone();
263 async move {
264 let responded = Arc::new(AtomicBool::default());
265 let response = Response {
266 server: server.clone(),
267 responded: responded.clone(),
268 receipt: envelope.receipt(),
269 };
270 match (handler)(server.clone(), envelope, response).await {
271 Ok(()) => {
272 if responded.load(std::sync::atomic::Ordering::SeqCst) {
273 Ok(())
274 } else {
275 Err(anyhow!("handler did not send a response"))?
276 }
277 }
278 Err(error) => {
279 server.peer.respond_with_error(
280 receipt,
281 proto::Error {
282 message: error.to_string(),
283 },
284 )?;
285 Err(error)
286 }
287 }
288 }
289 })
290 }
291
292 /// Start a long lived task that records which users are active in which projects.
293 pub fn start_recording_project_activity<E: 'static + Executor>(
294 self: &Arc<Self>,
295 interval: Duration,
296 executor: E,
297 ) {
298 executor.spawn_detached({
299 let this = Arc::downgrade(self);
300 let executor = executor.clone();
301 async move {
302 let mut period_start = OffsetDateTime::now_utc();
303 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
304 loop {
305 let sleep = executor.sleep(interval);
306 sleep.await;
307 let this = if let Some(this) = this.upgrade() {
308 this
309 } else {
310 break;
311 };
312
313 active_projects.clear();
314 active_projects.extend(this.store().await.projects().flat_map(
315 |(project_id, project)| {
316 project.guests.values().chain([&project.host]).filter_map(
317 |collaborator| {
318 if !collaborator.admin
319 && collaborator
320 .last_activity
321 .map_or(false, |activity| activity > period_start)
322 {
323 Some((collaborator.user_id, *project_id))
324 } else {
325 None
326 }
327 },
328 )
329 },
330 ));
331
332 let period_end = OffsetDateTime::now_utc();
333 this.app_state
334 .db
335 .record_user_activity(period_start..period_end, &active_projects)
336 .await
337 .trace_err();
338 period_start = period_end;
339 }
340 }
341 });
342 }
343
344 pub fn handle_connection<E: Executor>(
345 self: &Arc<Self>,
346 connection: Connection,
347 address: String,
348 user: User,
349 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
350 executor: E,
351 ) -> impl Future<Output = Result<()>> {
352 let mut this = self.clone();
353 let user_id = user.id;
354 let login = user.github_login;
355 let span = info_span!("handle connection", %user_id, %login, %address);
356 async move {
357 let (connection_id, handle_io, mut incoming_rx) = this
358 .peer
359 .add_connection(connection, {
360 let executor = executor.clone();
361 move |duration| {
362 let timer = executor.sleep(duration);
363 async move {
364 timer.await;
365 }
366 }
367 })
368 .await;
369
370 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
371
372 if let Some(send_connection_id) = send_connection_id.as_mut() {
373 let _ = send_connection_id.send(connection_id).await;
374 }
375
376 if !user.connected_once {
377 this.peer.send(connection_id, proto::ShowContacts {})?;
378 this.app_state.db.set_user_connected_once(user_id, true).await?;
379 }
380
381 let (contacts, invite_code) = future::try_join(
382 this.app_state.db.get_contacts(user_id),
383 this.app_state.db.get_invite_code_for_user(user_id)
384 ).await?;
385
386 {
387 let mut store = this.store().await;
388 store.add_connection(connection_id, user_id, user.admin);
389 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
390
391 if let Some((code, count)) = invite_code {
392 this.peer.send(connection_id, proto::UpdateInviteInfo {
393 url: format!("{}{}", this.app_state.invite_link_prefix, code),
394 count,
395 })?;
396 }
397 }
398 this.update_user_contacts(user_id).await?;
399
400 let handle_io = handle_io.fuse();
401 futures::pin_mut!(handle_io);
402
403 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
404 // This prevents deadlocks when e.g., client A performs a request to client B and
405 // client B performs a request to client A. If both clients stop processing further
406 // messages until their respective request completes, they won't have a chance to
407 // respond to the other client's request and cause a deadlock.
408 //
409 // This arrangement ensures we will attempt to process earlier messages first, but fall
410 // back to processing messages arrived later in the spirit of making progress.
411 let mut foreground_message_handlers = FuturesUnordered::new();
412 loop {
413 let next_message = incoming_rx.next().fuse();
414 futures::pin_mut!(next_message);
415 futures::select_biased! {
416 result = handle_io => {
417 if let Err(error) = result {
418 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
419 }
420 break;
421 }
422 _ = foreground_message_handlers.next() => {}
423 message = next_message => {
424 if let Some(message) = message {
425 let type_name = message.payload_type_name();
426 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
427 let span_enter = span.enter();
428 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
429 let notifications = this.notifications.clone();
430 let is_background = message.is_background();
431 let handle_message = (handler)(this.clone(), message);
432
433 drop(span_enter);
434 let handle_message = async move {
435 handle_message.await;
436 if let Some(mut notifications) = notifications {
437 let _ = notifications.send(()).await;
438 }
439 }.instrument(span);
440
441 if is_background {
442 executor.spawn_detached(handle_message);
443 } else {
444 foreground_message_handlers.push(handle_message);
445 }
446 } else {
447 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
448 }
449 } else {
450 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
451 break;
452 }
453 }
454 }
455 }
456
457 drop(foreground_message_handlers);
458 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
459 if let Err(error) = this.sign_out(connection_id).await {
460 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
461 }
462
463 Ok(())
464 }.instrument(span)
465 }
466
467 #[instrument(skip(self), err)]
468 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
469 self.peer.disconnect(connection_id);
470
471 let mut projects_to_unregister = Vec::new();
472 let removed_user_id;
473 {
474 let mut store = self.store().await;
475 let removed_connection = store.remove_connection(connection_id)?;
476
477 for (project_id, project) in removed_connection.hosted_projects {
478 projects_to_unregister.push(project_id);
479 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
480 self.peer.send(
481 conn_id,
482 proto::UnregisterProject {
483 project_id: project_id.to_proto(),
484 },
485 )
486 });
487
488 for (_, receipts) in project.join_requests {
489 for receipt in receipts {
490 self.peer.respond(
491 receipt,
492 proto::JoinProjectResponse {
493 variant: Some(proto::join_project_response::Variant::Decline(
494 proto::join_project_response::Decline {
495 reason: proto::join_project_response::decline::Reason::WentOffline as i32
496 },
497 )),
498 },
499 )?;
500 }
501 }
502 }
503
504 for project_id in removed_connection.guest_project_ids {
505 if let Some(project) = store.project(project_id).trace_err() {
506 broadcast(connection_id, project.connection_ids(), |conn_id| {
507 self.peer.send(
508 conn_id,
509 proto::RemoveProjectCollaborator {
510 project_id: project_id.to_proto(),
511 peer_id: connection_id.0,
512 },
513 )
514 });
515 if project.guests.is_empty() {
516 self.peer
517 .send(
518 project.host_connection_id,
519 proto::ProjectUnshared {
520 project_id: project_id.to_proto(),
521 },
522 )
523 .trace_err();
524 }
525 }
526 }
527
528 removed_user_id = removed_connection.user_id;
529 };
530
531 self.update_user_contacts(removed_user_id).await.trace_err();
532
533 for project_id in projects_to_unregister {
534 self.app_state
535 .db
536 .unregister_project(project_id)
537 .await
538 .trace_err();
539 }
540
541 Ok(())
542 }
543
544 pub async fn invite_code_redeemed(
545 self: &Arc<Self>,
546 inviter_id: UserId,
547 invitee_id: UserId,
548 ) -> Result<()> {
549 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
550 if let Some(code) = &user.invite_code {
551 let store = self.store().await;
552 let invitee_contact = store.contact_for_user(invitee_id, true);
553 for connection_id in store.connection_ids_for_user(inviter_id) {
554 self.peer.send(
555 connection_id,
556 proto::UpdateContacts {
557 contacts: vec![invitee_contact.clone()],
558 ..Default::default()
559 },
560 )?;
561 self.peer.send(
562 connection_id,
563 proto::UpdateInviteInfo {
564 url: format!("{}{}", self.app_state.invite_link_prefix, &code),
565 count: user.invite_count as u32,
566 },
567 )?;
568 }
569 }
570 }
571 Ok(())
572 }
573
574 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
575 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
576 if let Some(invite_code) = &user.invite_code {
577 let store = self.store().await;
578 for connection_id in store.connection_ids_for_user(user_id) {
579 self.peer.send(
580 connection_id,
581 proto::UpdateInviteInfo {
582 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
583 count: user.invite_count as u32,
584 },
585 )?;
586 }
587 }
588 }
589 Ok(())
590 }
591
592 async fn ping(
593 self: Arc<Server>,
594 _: TypedEnvelope<proto::Ping>,
595 response: Response<proto::Ping>,
596 ) -> Result<()> {
597 response.send(proto::Ack {})?;
598 Ok(())
599 }
600
601 async fn register_project(
602 self: Arc<Server>,
603 request: TypedEnvelope<proto::RegisterProject>,
604 response: Response<proto::RegisterProject>,
605 ) -> Result<()> {
606 let user_id = self
607 .store()
608 .await
609 .user_id_for_connection(request.sender_id)?;
610 let project_id = self.app_state.db.register_project(user_id).await?;
611 self.store().await.register_project(
612 request.sender_id,
613 project_id,
614 request.payload.online,
615 )?;
616
617 response.send(proto::RegisterProjectResponse {
618 project_id: project_id.to_proto(),
619 })?;
620
621 Ok(())
622 }
623
624 async fn unregister_project(
625 self: Arc<Server>,
626 request: TypedEnvelope<proto::UnregisterProject>,
627 response: Response<proto::UnregisterProject>,
628 ) -> Result<()> {
629 let project_id = ProjectId::from_proto(request.payload.project_id);
630 let (user_id, project) = {
631 let mut state = self.store().await;
632 let project = state.unregister_project(project_id, request.sender_id)?;
633 (state.user_id_for_connection(request.sender_id)?, project)
634 };
635 self.app_state.db.unregister_project(project_id).await?;
636
637 broadcast(
638 request.sender_id,
639 project.guests.keys().copied(),
640 |conn_id| {
641 self.peer.send(
642 conn_id,
643 proto::UnregisterProject {
644 project_id: project_id.to_proto(),
645 },
646 )
647 },
648 );
649 for (_, receipts) in project.join_requests {
650 for receipt in receipts {
651 self.peer.respond(
652 receipt,
653 proto::JoinProjectResponse {
654 variant: Some(proto::join_project_response::Variant::Decline(
655 proto::join_project_response::Decline {
656 reason: proto::join_project_response::decline::Reason::Closed
657 as i32,
658 },
659 )),
660 },
661 )?;
662 }
663 }
664
665 // Send out the `UpdateContacts` message before responding to the unregister
666 // request. This way, when the project's host can keep track of the project's
667 // remote id until after they've received the `UpdateContacts` message for
668 // themself.
669 self.update_user_contacts(user_id).await?;
670 response.send(proto::Ack {})?;
671
672 Ok(())
673 }
674
675 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
676 let contacts = self.app_state.db.get_contacts(user_id).await?;
677 let store = self.store().await;
678 let updated_contact = store.contact_for_user(user_id, false);
679 for contact in contacts {
680 if let db::Contact::Accepted {
681 user_id: contact_user_id,
682 ..
683 } = contact
684 {
685 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
686 self.peer
687 .send(
688 contact_conn_id,
689 proto::UpdateContacts {
690 contacts: vec![updated_contact.clone()],
691 remove_contacts: Default::default(),
692 incoming_requests: Default::default(),
693 remove_incoming_requests: Default::default(),
694 outgoing_requests: Default::default(),
695 remove_outgoing_requests: Default::default(),
696 },
697 )
698 .trace_err();
699 }
700 }
701 }
702 Ok(())
703 }
704
705 async fn join_project(
706 self: Arc<Server>,
707 request: TypedEnvelope<proto::JoinProject>,
708 response: Response<proto::JoinProject>,
709 ) -> Result<()> {
710 let project_id = ProjectId::from_proto(request.payload.project_id);
711
712 let host_user_id;
713 let guest_user_id;
714 let host_connection_id;
715 {
716 let state = self.store().await;
717 let project = state.project(project_id)?;
718 host_user_id = project.host.user_id;
719 host_connection_id = project.host_connection_id;
720 guest_user_id = state.user_id_for_connection(request.sender_id)?;
721 };
722
723 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
724 let has_contact = self
725 .app_state
726 .db
727 .has_contact(guest_user_id, host_user_id)
728 .await?;
729 if !has_contact {
730 return Err(anyhow!("no such project"))?;
731 }
732
733 self.store().await.request_join_project(
734 guest_user_id,
735 project_id,
736 response.into_receipt(),
737 )?;
738 self.peer.send(
739 host_connection_id,
740 proto::RequestJoinProject {
741 project_id: project_id.to_proto(),
742 requester_id: guest_user_id.to_proto(),
743 },
744 )?;
745 Ok(())
746 }
747
748 async fn respond_to_join_project_request(
749 self: Arc<Server>,
750 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
751 ) -> Result<()> {
752 let host_user_id;
753
754 {
755 let mut state = self.store().await;
756 let project_id = ProjectId::from_proto(request.payload.project_id);
757 let project = state.project(project_id)?;
758 if project.host_connection_id != request.sender_id {
759 Err(anyhow!("no such connection"))?;
760 }
761
762 host_user_id = project.host.user_id;
763 let guest_user_id = UserId::from_proto(request.payload.requester_id);
764
765 if !request.payload.allow {
766 let receipts = state
767 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
768 .ok_or_else(|| anyhow!("no such request"))?;
769 for receipt in receipts {
770 self.peer.respond(
771 receipt,
772 proto::JoinProjectResponse {
773 variant: Some(proto::join_project_response::Variant::Decline(
774 proto::join_project_response::Decline {
775 reason: proto::join_project_response::decline::Reason::Declined
776 as i32,
777 },
778 )),
779 },
780 )?;
781 }
782 return Ok(());
783 }
784
785 let (receipts_with_replica_ids, project) = state
786 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
787 .ok_or_else(|| anyhow!("no such request"))?;
788
789 let peer_count = project.guests.len();
790 let mut collaborators = Vec::with_capacity(peer_count);
791 collaborators.push(proto::Collaborator {
792 peer_id: project.host_connection_id.0,
793 replica_id: 0,
794 user_id: project.host.user_id.to_proto(),
795 });
796 let worktrees = project
797 .worktrees
798 .iter()
799 .map(|(id, worktree)| proto::WorktreeMetadata {
800 id: *id,
801 root_name: worktree.root_name.clone(),
802 visible: worktree.visible,
803 })
804 .collect::<Vec<_>>();
805
806 // Add all guests other than the requesting user's own connections as collaborators
807 for (guest_conn_id, guest) in &project.guests {
808 if receipts_with_replica_ids
809 .iter()
810 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
811 {
812 collaborators.push(proto::Collaborator {
813 peer_id: guest_conn_id.0,
814 replica_id: guest.replica_id as u32,
815 user_id: guest.user_id.to_proto(),
816 });
817 }
818 }
819
820 for conn_id in project.connection_ids() {
821 for (receipt, replica_id) in &receipts_with_replica_ids {
822 if conn_id != receipt.sender_id {
823 self.peer.send(
824 conn_id,
825 proto::AddProjectCollaborator {
826 project_id: project_id.to_proto(),
827 collaborator: Some(proto::Collaborator {
828 peer_id: receipt.sender_id.0,
829 replica_id: *replica_id as u32,
830 user_id: guest_user_id.to_proto(),
831 }),
832 },
833 )?;
834 }
835 }
836 }
837
838 // First, we send the metadata associated with each worktree.
839 for (receipt, replica_id) in &receipts_with_replica_ids {
840 self.peer.respond(
841 *receipt,
842 proto::JoinProjectResponse {
843 variant: Some(proto::join_project_response::Variant::Accept(
844 proto::join_project_response::Accept {
845 worktrees: worktrees.clone(),
846 replica_id: *replica_id as u32,
847 collaborators: collaborators.clone(),
848 language_servers: project.language_servers.clone(),
849 },
850 )),
851 },
852 )?;
853 }
854
855 for (worktree_id, worktree) in &project.worktrees {
856 #[cfg(any(test, feature = "test-support"))]
857 const MAX_CHUNK_SIZE: usize = 2;
858 #[cfg(not(any(test, feature = "test-support")))]
859 const MAX_CHUNK_SIZE: usize = 256;
860
861 // Stream this worktree's entries.
862 let message = proto::UpdateWorktree {
863 project_id: project_id.to_proto(),
864 worktree_id: *worktree_id,
865 root_name: worktree.root_name.clone(),
866 updated_entries: worktree.entries.values().cloned().collect(),
867 removed_entries: Default::default(),
868 scan_id: worktree.scan_id,
869 is_last_update: worktree.is_complete,
870 };
871 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
872 for (receipt, _) in &receipts_with_replica_ids {
873 self.peer.send(receipt.sender_id, update.clone())?;
874 }
875 }
876
877 // Stream this worktree's diagnostics.
878 for summary in worktree.diagnostic_summaries.values() {
879 for (receipt, _) in &receipts_with_replica_ids {
880 self.peer.send(
881 receipt.sender_id,
882 proto::UpdateDiagnosticSummary {
883 project_id: project_id.to_proto(),
884 worktree_id: *worktree_id,
885 summary: Some(summary.clone()),
886 },
887 )?;
888 }
889 }
890 }
891 }
892
893 self.update_user_contacts(host_user_id).await?;
894 Ok(())
895 }
896
897 async fn leave_project(
898 self: Arc<Server>,
899 request: TypedEnvelope<proto::LeaveProject>,
900 ) -> Result<()> {
901 let sender_id = request.sender_id;
902 let project_id = ProjectId::from_proto(request.payload.project_id);
903 let project;
904 {
905 let mut store = self.store().await;
906 project = store.leave_project(sender_id, project_id)?;
907 tracing::info!(
908 %project_id,
909 host_user_id = %project.host_user_id,
910 host_connection_id = %project.host_connection_id,
911 "leave project"
912 );
913
914 if project.remove_collaborator {
915 broadcast(sender_id, project.connection_ids, |conn_id| {
916 self.peer.send(
917 conn_id,
918 proto::RemoveProjectCollaborator {
919 project_id: project_id.to_proto(),
920 peer_id: sender_id.0,
921 },
922 )
923 });
924 }
925
926 if let Some(requester_id) = project.cancel_request {
927 self.peer.send(
928 project.host_connection_id,
929 proto::JoinProjectRequestCancelled {
930 project_id: project_id.to_proto(),
931 requester_id: requester_id.to_proto(),
932 },
933 )?;
934 }
935
936 if project.unshare {
937 self.peer.send(
938 project.host_connection_id,
939 proto::ProjectUnshared {
940 project_id: project_id.to_proto(),
941 },
942 )?;
943 }
944 }
945 self.update_user_contacts(project.host_user_id).await?;
946 Ok(())
947 }
948
949 async fn update_project(
950 self: Arc<Server>,
951 request: TypedEnvelope<proto::UpdateProject>,
952 ) -> Result<()> {
953 let project_id = ProjectId::from_proto(request.payload.project_id);
954 let user_id;
955 {
956 let mut state = self.store().await;
957 user_id = state.user_id_for_connection(request.sender_id)?;
958 let guest_connection_ids = state
959 .read_project(project_id, request.sender_id)?
960 .guest_connection_ids();
961 let unshared_project = state.update_project(
962 project_id,
963 &request.payload.worktrees,
964 request.payload.online,
965 request.sender_id,
966 )?;
967
968 if let Some(unshared_project) = unshared_project {
969 broadcast(
970 request.sender_id,
971 unshared_project.guests.keys().copied(),
972 |conn_id| {
973 self.peer.send(
974 conn_id,
975 proto::UnregisterProject {
976 project_id: project_id.to_proto(),
977 },
978 )
979 },
980 );
981 for (_, receipts) in unshared_project.pending_join_requests {
982 for receipt in receipts {
983 self.peer.respond(
984 receipt,
985 proto::JoinProjectResponse {
986 variant: Some(proto::join_project_response::Variant::Decline(
987 proto::join_project_response::Decline {
988 reason:
989 proto::join_project_response::decline::Reason::Closed
990 as i32,
991 },
992 )),
993 },
994 )?;
995 }
996 }
997 } else {
998 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
999 self.peer.forward_send(
1000 request.sender_id,
1001 connection_id,
1002 request.payload.clone(),
1003 )
1004 });
1005 }
1006 };
1007
1008 self.update_user_contacts(user_id).await?;
1009 Ok(())
1010 }
1011
1012 async fn register_project_activity(
1013 self: Arc<Server>,
1014 request: TypedEnvelope<proto::RegisterProjectActivity>,
1015 ) -> Result<()> {
1016 self.store().await.register_project_activity(
1017 ProjectId::from_proto(request.payload.project_id),
1018 request.sender_id,
1019 )?;
1020 Ok(())
1021 }
1022
1023 async fn update_worktree(
1024 self: Arc<Server>,
1025 request: TypedEnvelope<proto::UpdateWorktree>,
1026 response: Response<proto::UpdateWorktree>,
1027 ) -> Result<()> {
1028 let project_id = ProjectId::from_proto(request.payload.project_id);
1029 let worktree_id = request.payload.worktree_id;
1030 let (connection_ids, metadata_changed) = {
1031 let mut store = self.store().await;
1032 let (connection_ids, metadata_changed) = store.update_worktree(
1033 request.sender_id,
1034 project_id,
1035 worktree_id,
1036 &request.payload.root_name,
1037 &request.payload.removed_entries,
1038 &request.payload.updated_entries,
1039 request.payload.scan_id,
1040 request.payload.is_last_update,
1041 )?;
1042 (connection_ids, metadata_changed)
1043 };
1044
1045 broadcast(request.sender_id, connection_ids, |connection_id| {
1046 self.peer
1047 .forward_send(request.sender_id, connection_id, request.payload.clone())
1048 });
1049 if metadata_changed {
1050 let user_id = self
1051 .store()
1052 .await
1053 .user_id_for_connection(request.sender_id)?;
1054 self.update_user_contacts(user_id).await?;
1055 }
1056 response.send(proto::Ack {})?;
1057 Ok(())
1058 }
1059
1060 async fn update_worktree_extensions(
1061 self: Arc<Server>,
1062 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1063 ) -> Result<()> {
1064 let project_id = ProjectId::from_proto(request.payload.project_id);
1065 let worktree_id = request.payload.worktree_id;
1066 let extensions = request
1067 .payload
1068 .extensions
1069 .into_iter()
1070 .zip(request.payload.counts)
1071 .collect();
1072 self.app_state
1073 .db
1074 .update_worktree_extensions(project_id, worktree_id, extensions)
1075 .await?;
1076 Ok(())
1077 }
1078
1079 async fn update_diagnostic_summary(
1080 self: Arc<Server>,
1081 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1082 ) -> Result<()> {
1083 let summary = request
1084 .payload
1085 .summary
1086 .clone()
1087 .ok_or_else(|| anyhow!("invalid summary"))?;
1088 let receiver_ids = self.store().await.update_diagnostic_summary(
1089 ProjectId::from_proto(request.payload.project_id),
1090 request.payload.worktree_id,
1091 request.sender_id,
1092 summary,
1093 )?;
1094
1095 broadcast(request.sender_id, receiver_ids, |connection_id| {
1096 self.peer
1097 .forward_send(request.sender_id, connection_id, request.payload.clone())
1098 });
1099 Ok(())
1100 }
1101
1102 async fn start_language_server(
1103 self: Arc<Server>,
1104 request: TypedEnvelope<proto::StartLanguageServer>,
1105 ) -> Result<()> {
1106 let receiver_ids = self.store().await.start_language_server(
1107 ProjectId::from_proto(request.payload.project_id),
1108 request.sender_id,
1109 request
1110 .payload
1111 .server
1112 .clone()
1113 .ok_or_else(|| anyhow!("invalid language server"))?,
1114 )?;
1115 broadcast(request.sender_id, receiver_ids, |connection_id| {
1116 self.peer
1117 .forward_send(request.sender_id, connection_id, request.payload.clone())
1118 });
1119 Ok(())
1120 }
1121
1122 async fn update_language_server(
1123 self: Arc<Server>,
1124 request: TypedEnvelope<proto::UpdateLanguageServer>,
1125 ) -> Result<()> {
1126 let receiver_ids = self.store().await.project_connection_ids(
1127 ProjectId::from_proto(request.payload.project_id),
1128 request.sender_id,
1129 )?;
1130 broadcast(request.sender_id, receiver_ids, |connection_id| {
1131 self.peer
1132 .forward_send(request.sender_id, connection_id, request.payload.clone())
1133 });
1134 Ok(())
1135 }
1136
1137 async fn forward_project_request<T>(
1138 self: Arc<Server>,
1139 request: TypedEnvelope<T>,
1140 response: Response<T>,
1141 ) -> Result<()>
1142 where
1143 T: EntityMessage + RequestMessage,
1144 {
1145 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1146 let host_connection_id = self
1147 .store()
1148 .await
1149 .read_project(project_id, request.sender_id)?
1150 .host_connection_id;
1151 let payload = self
1152 .peer
1153 .forward_request(request.sender_id, host_connection_id, request.payload)
1154 .await?;
1155
1156 // Ensure project still exists by the time we get the response from the host.
1157 self.store()
1158 .await
1159 .read_project(project_id, request.sender_id)?;
1160
1161 response.send(payload)?;
1162 Ok(())
1163 }
1164
1165 async fn save_buffer(
1166 self: Arc<Server>,
1167 request: TypedEnvelope<proto::SaveBuffer>,
1168 response: Response<proto::SaveBuffer>,
1169 ) -> Result<()> {
1170 let project_id = ProjectId::from_proto(request.payload.project_id);
1171 let host = self
1172 .store()
1173 .await
1174 .read_project(project_id, request.sender_id)?
1175 .host_connection_id;
1176 let response_payload = self
1177 .peer
1178 .forward_request(request.sender_id, host, request.payload.clone())
1179 .await?;
1180
1181 let mut guests = self
1182 .store()
1183 .await
1184 .read_project(project_id, request.sender_id)?
1185 .connection_ids();
1186 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1187 broadcast(host, guests, |conn_id| {
1188 self.peer
1189 .forward_send(host, conn_id, response_payload.clone())
1190 });
1191 response.send(response_payload)?;
1192 Ok(())
1193 }
1194
1195 async fn create_buffer_for_peer(
1196 self: Arc<Server>,
1197 request: TypedEnvelope<proto::CreateBufferForPeer>,
1198 ) -> Result<()> {
1199 self.peer.forward_send(
1200 request.sender_id,
1201 ConnectionId(request.payload.peer_id),
1202 request.payload,
1203 )?;
1204 Ok(())
1205 }
1206
1207 async fn update_buffer(
1208 self: Arc<Server>,
1209 request: TypedEnvelope<proto::UpdateBuffer>,
1210 response: Response<proto::UpdateBuffer>,
1211 ) -> Result<()> {
1212 let project_id = ProjectId::from_proto(request.payload.project_id);
1213 let receiver_ids = {
1214 let mut store = self.store().await;
1215 store.register_project_activity(project_id, request.sender_id)?;
1216 store.project_connection_ids(project_id, request.sender_id)?
1217 };
1218
1219 broadcast(request.sender_id, receiver_ids, |connection_id| {
1220 self.peer
1221 .forward_send(request.sender_id, connection_id, request.payload.clone())
1222 });
1223 response.send(proto::Ack {})?;
1224 Ok(())
1225 }
1226
1227 async fn update_buffer_file(
1228 self: Arc<Server>,
1229 request: TypedEnvelope<proto::UpdateBufferFile>,
1230 ) -> Result<()> {
1231 let receiver_ids = self.store().await.project_connection_ids(
1232 ProjectId::from_proto(request.payload.project_id),
1233 request.sender_id,
1234 )?;
1235 broadcast(request.sender_id, receiver_ids, |connection_id| {
1236 self.peer
1237 .forward_send(request.sender_id, connection_id, request.payload.clone())
1238 });
1239 Ok(())
1240 }
1241
1242 async fn buffer_reloaded(
1243 self: Arc<Server>,
1244 request: TypedEnvelope<proto::BufferReloaded>,
1245 ) -> Result<()> {
1246 let receiver_ids = self.store().await.project_connection_ids(
1247 ProjectId::from_proto(request.payload.project_id),
1248 request.sender_id,
1249 )?;
1250 broadcast(request.sender_id, receiver_ids, |connection_id| {
1251 self.peer
1252 .forward_send(request.sender_id, connection_id, request.payload.clone())
1253 });
1254 Ok(())
1255 }
1256
1257 async fn buffer_saved(
1258 self: Arc<Server>,
1259 request: TypedEnvelope<proto::BufferSaved>,
1260 ) -> Result<()> {
1261 let receiver_ids = self.store().await.project_connection_ids(
1262 ProjectId::from_proto(request.payload.project_id),
1263 request.sender_id,
1264 )?;
1265 broadcast(request.sender_id, receiver_ids, |connection_id| {
1266 self.peer
1267 .forward_send(request.sender_id, connection_id, request.payload.clone())
1268 });
1269 Ok(())
1270 }
1271
1272 async fn follow(
1273 self: Arc<Self>,
1274 request: TypedEnvelope<proto::Follow>,
1275 response: Response<proto::Follow>,
1276 ) -> Result<()> {
1277 let project_id = ProjectId::from_proto(request.payload.project_id);
1278 let leader_id = ConnectionId(request.payload.leader_id);
1279 let follower_id = request.sender_id;
1280 {
1281 let mut store = self.store().await;
1282 if !store
1283 .project_connection_ids(project_id, follower_id)?
1284 .contains(&leader_id)
1285 {
1286 Err(anyhow!("no such peer"))?;
1287 }
1288
1289 store.register_project_activity(project_id, follower_id)?;
1290 }
1291
1292 let mut response_payload = self
1293 .peer
1294 .forward_request(request.sender_id, leader_id, request.payload)
1295 .await?;
1296 response_payload
1297 .views
1298 .retain(|view| view.leader_id != Some(follower_id.0));
1299 response.send(response_payload)?;
1300 Ok(())
1301 }
1302
1303 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1304 let project_id = ProjectId::from_proto(request.payload.project_id);
1305 let leader_id = ConnectionId(request.payload.leader_id);
1306 let mut store = self.store().await;
1307 if !store
1308 .project_connection_ids(project_id, request.sender_id)?
1309 .contains(&leader_id)
1310 {
1311 Err(anyhow!("no such peer"))?;
1312 }
1313 store.register_project_activity(project_id, request.sender_id)?;
1314 self.peer
1315 .forward_send(request.sender_id, leader_id, request.payload)?;
1316 Ok(())
1317 }
1318
1319 async fn update_followers(
1320 self: Arc<Self>,
1321 request: TypedEnvelope<proto::UpdateFollowers>,
1322 ) -> Result<()> {
1323 let project_id = ProjectId::from_proto(request.payload.project_id);
1324 let mut store = self.store().await;
1325 store.register_project_activity(project_id, request.sender_id)?;
1326 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1327 let leader_id = request
1328 .payload
1329 .variant
1330 .as_ref()
1331 .and_then(|variant| match variant {
1332 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1333 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1334 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1335 });
1336 for follower_id in &request.payload.follower_ids {
1337 let follower_id = ConnectionId(*follower_id);
1338 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1339 self.peer
1340 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1341 }
1342 }
1343 Ok(())
1344 }
1345
1346 async fn get_channels(
1347 self: Arc<Server>,
1348 request: TypedEnvelope<proto::GetChannels>,
1349 response: Response<proto::GetChannels>,
1350 ) -> Result<()> {
1351 let user_id = self
1352 .store()
1353 .await
1354 .user_id_for_connection(request.sender_id)?;
1355 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1356 response.send(proto::GetChannelsResponse {
1357 channels: channels
1358 .into_iter()
1359 .map(|chan| proto::Channel {
1360 id: chan.id.to_proto(),
1361 name: chan.name,
1362 })
1363 .collect(),
1364 })?;
1365 Ok(())
1366 }
1367
1368 async fn get_users(
1369 self: Arc<Server>,
1370 request: TypedEnvelope<proto::GetUsers>,
1371 response: Response<proto::GetUsers>,
1372 ) -> Result<()> {
1373 let user_ids = request
1374 .payload
1375 .user_ids
1376 .into_iter()
1377 .map(UserId::from_proto)
1378 .collect();
1379 let users = self
1380 .app_state
1381 .db
1382 .get_users_by_ids(user_ids)
1383 .await?
1384 .into_iter()
1385 .map(|user| proto::User {
1386 id: user.id.to_proto(),
1387 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1388 github_login: user.github_login,
1389 })
1390 .collect();
1391 response.send(proto::UsersResponse { users })?;
1392 Ok(())
1393 }
1394
1395 async fn fuzzy_search_users(
1396 self: Arc<Server>,
1397 request: TypedEnvelope<proto::FuzzySearchUsers>,
1398 response: Response<proto::FuzzySearchUsers>,
1399 ) -> Result<()> {
1400 let user_id = self
1401 .store()
1402 .await
1403 .user_id_for_connection(request.sender_id)?;
1404 let query = request.payload.query;
1405 let db = &self.app_state.db;
1406 let users = match query.len() {
1407 0 => vec![],
1408 1 | 2 => db
1409 .get_user_by_github_account(&query, None)
1410 .await?
1411 .into_iter()
1412 .collect(),
1413 _ => db.fuzzy_search_users(&query, 10).await?,
1414 };
1415 let users = users
1416 .into_iter()
1417 .filter(|user| user.id != user_id)
1418 .map(|user| proto::User {
1419 id: user.id.to_proto(),
1420 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1421 github_login: user.github_login,
1422 })
1423 .collect();
1424 response.send(proto::UsersResponse { users })?;
1425 Ok(())
1426 }
1427
1428 async fn request_contact(
1429 self: Arc<Server>,
1430 request: TypedEnvelope<proto::RequestContact>,
1431 response: Response<proto::RequestContact>,
1432 ) -> Result<()> {
1433 let requester_id = self
1434 .store()
1435 .await
1436 .user_id_for_connection(request.sender_id)?;
1437 let responder_id = UserId::from_proto(request.payload.responder_id);
1438 if requester_id == responder_id {
1439 return Err(anyhow!("cannot add yourself as a contact"))?;
1440 }
1441
1442 self.app_state
1443 .db
1444 .send_contact_request(requester_id, responder_id)
1445 .await?;
1446
1447 // Update outgoing contact requests of requester
1448 let mut update = proto::UpdateContacts::default();
1449 update.outgoing_requests.push(responder_id.to_proto());
1450 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1451 self.peer.send(connection_id, update.clone())?;
1452 }
1453
1454 // Update incoming contact requests of responder
1455 let mut update = proto::UpdateContacts::default();
1456 update
1457 .incoming_requests
1458 .push(proto::IncomingContactRequest {
1459 requester_id: requester_id.to_proto(),
1460 should_notify: true,
1461 });
1462 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1463 self.peer.send(connection_id, update.clone())?;
1464 }
1465
1466 response.send(proto::Ack {})?;
1467 Ok(())
1468 }
1469
1470 async fn respond_to_contact_request(
1471 self: Arc<Server>,
1472 request: TypedEnvelope<proto::RespondToContactRequest>,
1473 response: Response<proto::RespondToContactRequest>,
1474 ) -> Result<()> {
1475 let responder_id = self
1476 .store()
1477 .await
1478 .user_id_for_connection(request.sender_id)?;
1479 let requester_id = UserId::from_proto(request.payload.requester_id);
1480 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1481 self.app_state
1482 .db
1483 .dismiss_contact_notification(responder_id, requester_id)
1484 .await?;
1485 } else {
1486 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1487 self.app_state
1488 .db
1489 .respond_to_contact_request(responder_id, requester_id, accept)
1490 .await?;
1491
1492 let store = self.store().await;
1493 // Update responder with new contact
1494 let mut update = proto::UpdateContacts::default();
1495 if accept {
1496 update
1497 .contacts
1498 .push(store.contact_for_user(requester_id, false));
1499 }
1500 update
1501 .remove_incoming_requests
1502 .push(requester_id.to_proto());
1503 for connection_id in store.connection_ids_for_user(responder_id) {
1504 self.peer.send(connection_id, update.clone())?;
1505 }
1506
1507 // Update requester with new contact
1508 let mut update = proto::UpdateContacts::default();
1509 if accept {
1510 update
1511 .contacts
1512 .push(store.contact_for_user(responder_id, true));
1513 }
1514 update
1515 .remove_outgoing_requests
1516 .push(responder_id.to_proto());
1517 for connection_id in store.connection_ids_for_user(requester_id) {
1518 self.peer.send(connection_id, update.clone())?;
1519 }
1520 }
1521
1522 response.send(proto::Ack {})?;
1523 Ok(())
1524 }
1525
1526 async fn remove_contact(
1527 self: Arc<Server>,
1528 request: TypedEnvelope<proto::RemoveContact>,
1529 response: Response<proto::RemoveContact>,
1530 ) -> Result<()> {
1531 let requester_id = self
1532 .store()
1533 .await
1534 .user_id_for_connection(request.sender_id)?;
1535 let responder_id = UserId::from_proto(request.payload.user_id);
1536 self.app_state
1537 .db
1538 .remove_contact(requester_id, responder_id)
1539 .await?;
1540
1541 // Update outgoing contact requests of requester
1542 let mut update = proto::UpdateContacts::default();
1543 update
1544 .remove_outgoing_requests
1545 .push(responder_id.to_proto());
1546 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1547 self.peer.send(connection_id, update.clone())?;
1548 }
1549
1550 // Update incoming contact requests of responder
1551 let mut update = proto::UpdateContacts::default();
1552 update
1553 .remove_incoming_requests
1554 .push(requester_id.to_proto());
1555 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1556 self.peer.send(connection_id, update.clone())?;
1557 }
1558
1559 response.send(proto::Ack {})?;
1560 Ok(())
1561 }
1562
1563 async fn join_channel(
1564 self: Arc<Self>,
1565 request: TypedEnvelope<proto::JoinChannel>,
1566 response: Response<proto::JoinChannel>,
1567 ) -> Result<()> {
1568 let user_id = self
1569 .store()
1570 .await
1571 .user_id_for_connection(request.sender_id)?;
1572 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1573 if !self
1574 .app_state
1575 .db
1576 .can_user_access_channel(user_id, channel_id)
1577 .await?
1578 {
1579 Err(anyhow!("access denied"))?;
1580 }
1581
1582 self.store()
1583 .await
1584 .join_channel(request.sender_id, channel_id);
1585 let messages = self
1586 .app_state
1587 .db
1588 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1589 .await?
1590 .into_iter()
1591 .map(|msg| proto::ChannelMessage {
1592 id: msg.id.to_proto(),
1593 body: msg.body,
1594 timestamp: msg.sent_at.unix_timestamp() as u64,
1595 sender_id: msg.sender_id.to_proto(),
1596 nonce: Some(msg.nonce.as_u128().into()),
1597 })
1598 .collect::<Vec<_>>();
1599 response.send(proto::JoinChannelResponse {
1600 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1601 messages,
1602 })?;
1603 Ok(())
1604 }
1605
1606 async fn leave_channel(
1607 self: Arc<Self>,
1608 request: TypedEnvelope<proto::LeaveChannel>,
1609 ) -> Result<()> {
1610 let user_id = self
1611 .store()
1612 .await
1613 .user_id_for_connection(request.sender_id)?;
1614 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1615 if !self
1616 .app_state
1617 .db
1618 .can_user_access_channel(user_id, channel_id)
1619 .await?
1620 {
1621 Err(anyhow!("access denied"))?;
1622 }
1623
1624 self.store()
1625 .await
1626 .leave_channel(request.sender_id, channel_id);
1627
1628 Ok(())
1629 }
1630
1631 async fn send_channel_message(
1632 self: Arc<Self>,
1633 request: TypedEnvelope<proto::SendChannelMessage>,
1634 response: Response<proto::SendChannelMessage>,
1635 ) -> Result<()> {
1636 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1637 let user_id;
1638 let connection_ids;
1639 {
1640 let state = self.store().await;
1641 user_id = state.user_id_for_connection(request.sender_id)?;
1642 connection_ids = state.channel_connection_ids(channel_id)?;
1643 }
1644
1645 // Validate the message body.
1646 let body = request.payload.body.trim().to_string();
1647 if body.len() > MAX_MESSAGE_LEN {
1648 return Err(anyhow!("message is too long"))?;
1649 }
1650 if body.is_empty() {
1651 return Err(anyhow!("message can't be blank"))?;
1652 }
1653
1654 let timestamp = OffsetDateTime::now_utc();
1655 let nonce = request
1656 .payload
1657 .nonce
1658 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1659
1660 let message_id = self
1661 .app_state
1662 .db
1663 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1664 .await?
1665 .to_proto();
1666 let message = proto::ChannelMessage {
1667 sender_id: user_id.to_proto(),
1668 id: message_id,
1669 body,
1670 timestamp: timestamp.unix_timestamp() as u64,
1671 nonce: Some(nonce),
1672 };
1673 broadcast(request.sender_id, connection_ids, |conn_id| {
1674 self.peer.send(
1675 conn_id,
1676 proto::ChannelMessageSent {
1677 channel_id: channel_id.to_proto(),
1678 message: Some(message.clone()),
1679 },
1680 )
1681 });
1682 response.send(proto::SendChannelMessageResponse {
1683 message: Some(message),
1684 })?;
1685 Ok(())
1686 }
1687
1688 async fn get_channel_messages(
1689 self: Arc<Self>,
1690 request: TypedEnvelope<proto::GetChannelMessages>,
1691 response: Response<proto::GetChannelMessages>,
1692 ) -> Result<()> {
1693 let user_id = self
1694 .store()
1695 .await
1696 .user_id_for_connection(request.sender_id)?;
1697 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1698 if !self
1699 .app_state
1700 .db
1701 .can_user_access_channel(user_id, channel_id)
1702 .await?
1703 {
1704 Err(anyhow!("access denied"))?;
1705 }
1706
1707 let messages = self
1708 .app_state
1709 .db
1710 .get_channel_messages(
1711 channel_id,
1712 MESSAGE_COUNT_PER_PAGE,
1713 Some(MessageId::from_proto(request.payload.before_message_id)),
1714 )
1715 .await?
1716 .into_iter()
1717 .map(|msg| proto::ChannelMessage {
1718 id: msg.id.to_proto(),
1719 body: msg.body,
1720 timestamp: msg.sent_at.unix_timestamp() as u64,
1721 sender_id: msg.sender_id.to_proto(),
1722 nonce: Some(msg.nonce.as_u128().into()),
1723 })
1724 .collect::<Vec<_>>();
1725 response.send(proto::GetChannelMessagesResponse {
1726 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1727 messages,
1728 })?;
1729 Ok(())
1730 }
1731
1732 async fn update_diff_base(
1733 self: Arc<Server>,
1734 request: TypedEnvelope<proto::UpdateDiffBase>,
1735 ) -> Result<()> {
1736 let receiver_ids = self.store().await.project_connection_ids(
1737 ProjectId::from_proto(request.payload.project_id),
1738 request.sender_id,
1739 )?;
1740 broadcast(request.sender_id, receiver_ids, |connection_id| {
1741 self.peer
1742 .forward_send(request.sender_id, connection_id, request.payload.clone())
1743 });
1744 Ok(())
1745 }
1746
1747 async fn get_private_user_info(
1748 self: Arc<Self>,
1749 request: TypedEnvelope<proto::GetPrivateUserInfo>,
1750 response: Response<proto::GetPrivateUserInfo>,
1751 ) -> Result<()> {
1752 let user_id = self
1753 .store()
1754 .await
1755 .user_id_for_connection(request.sender_id)?;
1756 let metrics_id = self.app_state.db.get_user_metrics_id(user_id).await?;
1757 let user = self
1758 .app_state
1759 .db
1760 .get_user_by_id(user_id)
1761 .await?
1762 .ok_or_else(|| anyhow!("user not found"))?;
1763 response.send(proto::GetPrivateUserInfoResponse {
1764 metrics_id,
1765 staff: user.admin,
1766 })?;
1767 Ok(())
1768 }
1769
1770 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1771 #[cfg(test)]
1772 tokio::task::yield_now().await;
1773 let guard = self.store.lock().await;
1774 #[cfg(test)]
1775 tokio::task::yield_now().await;
1776 StoreGuard {
1777 guard,
1778 _not_send: PhantomData,
1779 }
1780 }
1781
1782 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1783 ServerSnapshot {
1784 store: self.store().await,
1785 peer: &self.peer,
1786 }
1787 }
1788}
1789
1790impl<'a> Deref for StoreGuard<'a> {
1791 type Target = Store;
1792
1793 fn deref(&self) -> &Self::Target {
1794 &*self.guard
1795 }
1796}
1797
1798impl<'a> DerefMut for StoreGuard<'a> {
1799 fn deref_mut(&mut self) -> &mut Self::Target {
1800 &mut *self.guard
1801 }
1802}
1803
1804impl<'a> Drop for StoreGuard<'a> {
1805 fn drop(&mut self) {
1806 #[cfg(test)]
1807 self.check_invariants();
1808 }
1809}
1810
1811impl Executor for RealExecutor {
1812 type Sleep = Sleep;
1813
1814 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1815 tokio::task::spawn(future);
1816 }
1817
1818 fn sleep(&self, duration: Duration) -> Self::Sleep {
1819 tokio::time::sleep(duration)
1820 }
1821}
1822
1823fn broadcast<F>(
1824 sender_id: ConnectionId,
1825 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1826 mut f: F,
1827) where
1828 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1829{
1830 for receiver_id in receiver_ids {
1831 if receiver_id != sender_id {
1832 f(receiver_id).trace_err();
1833 }
1834 }
1835}
1836
1837lazy_static! {
1838 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1839}
1840
1841pub struct ProtocolVersion(u32);
1842
1843impl Header for ProtocolVersion {
1844 fn name() -> &'static HeaderName {
1845 &ZED_PROTOCOL_VERSION
1846 }
1847
1848 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1849 where
1850 Self: Sized,
1851 I: Iterator<Item = &'i axum::http::HeaderValue>,
1852 {
1853 let version = values
1854 .next()
1855 .ok_or_else(axum::headers::Error::invalid)?
1856 .to_str()
1857 .map_err(|_| axum::headers::Error::invalid())?
1858 .parse()
1859 .map_err(|_| axum::headers::Error::invalid())?;
1860 Ok(Self(version))
1861 }
1862
1863 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1864 values.extend([self.0.to_string().parse().unwrap()]);
1865 }
1866}
1867
1868pub fn routes(server: Arc<Server>) -> Router<Body> {
1869 Router::new()
1870 .route("/rpc", get(handle_websocket_request))
1871 .layer(
1872 ServiceBuilder::new()
1873 .layer(Extension(server.app_state.clone()))
1874 .layer(middleware::from_fn(auth::validate_header)),
1875 )
1876 .route("/metrics", get(handle_metrics))
1877 .layer(Extension(server))
1878}
1879
1880pub async fn handle_websocket_request(
1881 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1882 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1883 Extension(server): Extension<Arc<Server>>,
1884 Extension(user): Extension<User>,
1885 ws: WebSocketUpgrade,
1886) -> axum::response::Response {
1887 if protocol_version != rpc::PROTOCOL_VERSION {
1888 return (
1889 StatusCode::UPGRADE_REQUIRED,
1890 "client must be upgraded".to_string(),
1891 )
1892 .into_response();
1893 }
1894 let socket_address = socket_address.to_string();
1895 ws.on_upgrade(move |socket| {
1896 use util::ResultExt;
1897 let socket = socket
1898 .map_ok(to_tungstenite_message)
1899 .err_into()
1900 .with(|message| async move { Ok(to_axum_message(message)) });
1901 let connection = Connection::new(Box::pin(socket));
1902 async move {
1903 server
1904 .handle_connection(connection, socket_address, user, None, RealExecutor)
1905 .await
1906 .log_err();
1907 }
1908 })
1909}
1910
1911pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1912 // We call `store_mut` here for its side effects of updating metrics.
1913 let metrics = server.store().await.metrics();
1914 METRIC_CONNECTIONS.set(metrics.connections as _);
1915 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1916 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1917 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1918
1919 let encoder = prometheus::TextEncoder::new();
1920 let metric_families = prometheus::gather();
1921 match encoder.encode_to_string(&metric_families) {
1922 Ok(string) => (StatusCode::OK, string).into_response(),
1923 Err(error) => (
1924 StatusCode::INTERNAL_SERVER_ERROR,
1925 format!("failed to encode metrics {:?}", error),
1926 )
1927 .into_response(),
1928 }
1929}
1930
1931fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1932 match message {
1933 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1934 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1935 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1936 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1937 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1938 code: frame.code.into(),
1939 reason: frame.reason,
1940 })),
1941 }
1942}
1943
1944fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1945 match message {
1946 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1947 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1948 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1949 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1950 AxumMessage::Close(frame) => {
1951 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1952 code: frame.code.into(),
1953 reason: frame.reason,
1954 }))
1955 }
1956 }
1957}
1958
1959pub trait ResultExt {
1960 type Ok;
1961
1962 fn trace_err(self) -> Option<Self::Ok>;
1963}
1964
1965impl<T, E> ResultExt for Result<T, E>
1966where
1967 E: std::fmt::Debug,
1968{
1969 type Ok = T;
1970
1971 fn trace_err(self) -> Option<T> {
1972 match self {
1973 Ok(value) => Some(value),
1974 Err(error) => {
1975 tracing::error!("{:?}", error);
1976 None
1977 }
1978 }
1979 }
1980}