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::create_room)
155 .add_request_handler(Server::register_project)
156 .add_request_handler(Server::unregister_project)
157 .add_request_handler(Server::join_project)
158 .add_message_handler(Server::leave_project)
159 .add_message_handler(Server::respond_to_join_project_request)
160 .add_message_handler(Server::update_project)
161 .add_message_handler(Server::register_project_activity)
162 .add_request_handler(Server::update_worktree)
163 .add_message_handler(Server::update_worktree_extensions)
164 .add_message_handler(Server::start_language_server)
165 .add_message_handler(Server::update_language_server)
166 .add_message_handler(Server::update_diagnostic_summary)
167 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
168 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
170 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
171 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
172 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
173 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
176 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
177 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
178 .add_request_handler(
179 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
180 )
181 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
182 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
183 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
184 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
185 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
187 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
190 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
191 .add_message_handler(Server::create_buffer_for_peer)
192 .add_request_handler(Server::update_buffer)
193 .add_message_handler(Server::update_buffer_file)
194 .add_message_handler(Server::buffer_reloaded)
195 .add_message_handler(Server::buffer_saved)
196 .add_request_handler(Server::save_buffer)
197 .add_request_handler(Server::get_channels)
198 .add_request_handler(Server::get_users)
199 .add_request_handler(Server::fuzzy_search_users)
200 .add_request_handler(Server::request_contact)
201 .add_request_handler(Server::remove_contact)
202 .add_request_handler(Server::respond_to_contact_request)
203 .add_request_handler(Server::join_channel)
204 .add_message_handler(Server::leave_channel)
205 .add_request_handler(Server::send_channel_message)
206 .add_request_handler(Server::follow)
207 .add_message_handler(Server::unfollow)
208 .add_message_handler(Server::update_followers)
209 .add_request_handler(Server::get_channel_messages);
210
211 Arc::new(server)
212 }
213
214 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
215 where
216 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
217 Fut: 'static + Send + Future<Output = Result<()>>,
218 M: EnvelopedMessage,
219 {
220 let prev_handler = self.handlers.insert(
221 TypeId::of::<M>(),
222 Box::new(move |server, envelope| {
223 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
224 let span = info_span!(
225 "handle message",
226 payload_type = envelope.payload_type_name()
227 );
228 span.in_scope(|| {
229 tracing::info!(
230 payload_type = envelope.payload_type_name(),
231 "message received"
232 );
233 });
234 let future = (handler)(server, *envelope);
235 async move {
236 if let Err(error) = future.await {
237 tracing::error!(%error, "error handling message");
238 }
239 }
240 .instrument(span)
241 .boxed()
242 }),
243 );
244 if prev_handler.is_some() {
245 panic!("registered a handler for the same message twice");
246 }
247 self
248 }
249
250 /// Handle a request while holding a lock to the store. This is useful when we're registering
251 /// a connection but we want to respond on the connection before anybody else can send on it.
252 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
253 where
254 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
255 Fut: Send + Future<Output = Result<()>>,
256 M: RequestMessage,
257 {
258 let handler = Arc::new(handler);
259 self.add_message_handler(move |server, envelope| {
260 let receipt = envelope.receipt();
261 let handler = handler.clone();
262 async move {
263 let responded = Arc::new(AtomicBool::default());
264 let response = Response {
265 server: server.clone(),
266 responded: responded.clone(),
267 receipt: envelope.receipt(),
268 };
269 match (handler)(server.clone(), envelope, response).await {
270 Ok(()) => {
271 if responded.load(std::sync::atomic::Ordering::SeqCst) {
272 Ok(())
273 } else {
274 Err(anyhow!("handler did not send a response"))?
275 }
276 }
277 Err(error) => {
278 server.peer.respond_with_error(
279 receipt,
280 proto::Error {
281 message: error.to_string(),
282 },
283 )?;
284 Err(error)
285 }
286 }
287 }
288 })
289 }
290
291 /// Start a long lived task that records which users are active in which projects.
292 pub fn start_recording_project_activity<E: 'static + Executor>(
293 self: &Arc<Self>,
294 interval: Duration,
295 executor: E,
296 ) {
297 executor.spawn_detached({
298 let this = Arc::downgrade(self);
299 let executor = executor.clone();
300 async move {
301 let mut period_start = OffsetDateTime::now_utc();
302 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
303 loop {
304 let sleep = executor.sleep(interval);
305 sleep.await;
306 let this = if let Some(this) = this.upgrade() {
307 this
308 } else {
309 break;
310 };
311
312 active_projects.clear();
313 active_projects.extend(this.store().await.projects().flat_map(
314 |(project_id, project)| {
315 project.guests.values().chain([&project.host]).filter_map(
316 |collaborator| {
317 if !collaborator.admin
318 && collaborator
319 .last_activity
320 .map_or(false, |activity| activity > period_start)
321 {
322 Some((collaborator.user_id, *project_id))
323 } else {
324 None
325 }
326 },
327 )
328 },
329 ));
330
331 let period_end = OffsetDateTime::now_utc();
332 this.app_state
333 .db
334 .record_user_activity(period_start..period_end, &active_projects)
335 .await
336 .trace_err();
337 period_start = period_end;
338 }
339 }
340 });
341 }
342
343 pub fn handle_connection<E: Executor>(
344 self: &Arc<Self>,
345 connection: Connection,
346 address: String,
347 user: User,
348 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
349 executor: E,
350 ) -> impl Future<Output = Result<()>> {
351 let mut this = self.clone();
352 let user_id = user.id;
353 let login = user.github_login;
354 let span = info_span!("handle connection", %user_id, %login, %address);
355 async move {
356 let (connection_id, handle_io, mut incoming_rx) = this
357 .peer
358 .add_connection(connection, {
359 let executor = executor.clone();
360 move |duration| {
361 let timer = executor.sleep(duration);
362 async move {
363 timer.await;
364 }
365 }
366 })
367 .await;
368
369 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
370
371 if let Some(send_connection_id) = send_connection_id.as_mut() {
372 let _ = send_connection_id.send(connection_id).await;
373 }
374
375 if !user.connected_once {
376 this.peer.send(connection_id, proto::ShowContacts {})?;
377 this.app_state.db.set_user_connected_once(user_id, true).await?;
378 }
379
380 let (contacts, invite_code) = future::try_join(
381 this.app_state.db.get_contacts(user_id),
382 this.app_state.db.get_invite_code_for_user(user_id)
383 ).await?;
384
385 {
386 let mut store = this.store().await;
387 store.add_connection(connection_id, user_id, user.admin);
388 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
389
390 if let Some((code, count)) = invite_code {
391 this.peer.send(connection_id, proto::UpdateInviteInfo {
392 url: format!("{}{}", this.app_state.invite_link_prefix, code),
393 count,
394 })?;
395 }
396 }
397 this.update_user_contacts(user_id).await?;
398
399 let handle_io = handle_io.fuse();
400 futures::pin_mut!(handle_io);
401
402 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
403 // This prevents deadlocks when e.g., client A performs a request to client B and
404 // client B performs a request to client A. If both clients stop processing further
405 // messages until their respective request completes, they won't have a chance to
406 // respond to the other client's request and cause a deadlock.
407 //
408 // This arrangement ensures we will attempt to process earlier messages first, but fall
409 // back to processing messages arrived later in the spirit of making progress.
410 let mut foreground_message_handlers = FuturesUnordered::new();
411 loop {
412 let next_message = incoming_rx.next().fuse();
413 futures::pin_mut!(next_message);
414 futures::select_biased! {
415 result = handle_io => {
416 if let Err(error) = result {
417 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
418 }
419 break;
420 }
421 _ = foreground_message_handlers.next() => {}
422 message = next_message => {
423 if let Some(message) = message {
424 let type_name = message.payload_type_name();
425 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
426 let span_enter = span.enter();
427 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
428 let notifications = this.notifications.clone();
429 let is_background = message.is_background();
430 let handle_message = (handler)(this.clone(), message);
431
432 drop(span_enter);
433 let handle_message = async move {
434 handle_message.await;
435 if let Some(mut notifications) = notifications {
436 let _ = notifications.send(()).await;
437 }
438 }.instrument(span);
439
440 if is_background {
441 executor.spawn_detached(handle_message);
442 } else {
443 foreground_message_handlers.push(handle_message);
444 }
445 } else {
446 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
447 }
448 } else {
449 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
450 break;
451 }
452 }
453 }
454 }
455
456 drop(foreground_message_handlers);
457 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
458 if let Err(error) = this.sign_out(connection_id).await {
459 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
460 }
461
462 Ok(())
463 }.instrument(span)
464 }
465
466 #[instrument(skip(self), err)]
467 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
468 self.peer.disconnect(connection_id);
469
470 let mut projects_to_unregister = Vec::new();
471 let removed_user_id;
472 {
473 let mut store = self.store().await;
474 let removed_connection = store.remove_connection(connection_id)?;
475
476 for (project_id, project) in removed_connection.hosted_projects {
477 projects_to_unregister.push(project_id);
478 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
479 self.peer.send(
480 conn_id,
481 proto::UnregisterProject {
482 project_id: project_id.to_proto(),
483 },
484 )
485 });
486
487 for (_, receipts) in project.join_requests {
488 for receipt in receipts {
489 self.peer.respond(
490 receipt,
491 proto::JoinProjectResponse {
492 variant: Some(proto::join_project_response::Variant::Decline(
493 proto::join_project_response::Decline {
494 reason: proto::join_project_response::decline::Reason::WentOffline as i32
495 },
496 )),
497 },
498 )?;
499 }
500 }
501 }
502
503 for project_id in removed_connection.guest_project_ids {
504 if let Some(project) = store.project(project_id).trace_err() {
505 broadcast(connection_id, project.connection_ids(), |conn_id| {
506 self.peer.send(
507 conn_id,
508 proto::RemoveProjectCollaborator {
509 project_id: project_id.to_proto(),
510 peer_id: connection_id.0,
511 },
512 )
513 });
514 if project.guests.is_empty() {
515 self.peer
516 .send(
517 project.host_connection_id,
518 proto::ProjectUnshared {
519 project_id: project_id.to_proto(),
520 },
521 )
522 .trace_err();
523 }
524 }
525 }
526
527 removed_user_id = removed_connection.user_id;
528 };
529
530 self.update_user_contacts(removed_user_id).await.trace_err();
531
532 for project_id in projects_to_unregister {
533 self.app_state
534 .db
535 .unregister_project(project_id)
536 .await
537 .trace_err();
538 }
539
540 Ok(())
541 }
542
543 pub async fn invite_code_redeemed(
544 self: &Arc<Self>,
545 code: &str,
546 invitee_id: UserId,
547 ) -> Result<()> {
548 let user = self.app_state.db.get_user_for_invite_code(code).await?;
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(user.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 Ok(())
568 }
569
570 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
571 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
572 if let Some(invite_code) = &user.invite_code {
573 let store = self.store().await;
574 for connection_id in store.connection_ids_for_user(user_id) {
575 self.peer.send(
576 connection_id,
577 proto::UpdateInviteInfo {
578 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
579 count: user.invite_count as u32,
580 },
581 )?;
582 }
583 }
584 }
585 Ok(())
586 }
587
588 async fn ping(
589 self: Arc<Server>,
590 _: TypedEnvelope<proto::Ping>,
591 response: Response<proto::Ping>,
592 ) -> Result<()> {
593 response.send(proto::Ack {})?;
594 Ok(())
595 }
596
597 async fn create_room(
598 self: Arc<Server>,
599 request: TypedEnvelope<proto::CreateRoom>,
600 response: Response<proto::CreateRoom>,
601 ) -> Result<()> {
602 let room_id = self.store().await.create_room(request.sender_id)?;
603 response.send(proto::CreateRoomResponse { id: room_id })?;
604 Ok(())
605 }
606
607 async fn register_project(
608 self: Arc<Server>,
609 request: TypedEnvelope<proto::RegisterProject>,
610 response: Response<proto::RegisterProject>,
611 ) -> Result<()> {
612 let user_id = self
613 .store()
614 .await
615 .user_id_for_connection(request.sender_id)?;
616 let project_id = self.app_state.db.register_project(user_id).await?;
617 self.store().await.register_project(
618 request.sender_id,
619 project_id,
620 request.payload.online,
621 )?;
622
623 response.send(proto::RegisterProjectResponse {
624 project_id: project_id.to_proto(),
625 })?;
626
627 Ok(())
628 }
629
630 async fn unregister_project(
631 self: Arc<Server>,
632 request: TypedEnvelope<proto::UnregisterProject>,
633 response: Response<proto::UnregisterProject>,
634 ) -> Result<()> {
635 let project_id = ProjectId::from_proto(request.payload.project_id);
636 let (user_id, project) = {
637 let mut state = self.store().await;
638 let project = state.unregister_project(project_id, request.sender_id)?;
639 (state.user_id_for_connection(request.sender_id)?, project)
640 };
641 self.app_state.db.unregister_project(project_id).await?;
642
643 broadcast(
644 request.sender_id,
645 project.guests.keys().copied(),
646 |conn_id| {
647 self.peer.send(
648 conn_id,
649 proto::UnregisterProject {
650 project_id: project_id.to_proto(),
651 },
652 )
653 },
654 );
655 for (_, receipts) in project.join_requests {
656 for receipt in receipts {
657 self.peer.respond(
658 receipt,
659 proto::JoinProjectResponse {
660 variant: Some(proto::join_project_response::Variant::Decline(
661 proto::join_project_response::Decline {
662 reason: proto::join_project_response::decline::Reason::Closed
663 as i32,
664 },
665 )),
666 },
667 )?;
668 }
669 }
670
671 // Send out the `UpdateContacts` message before responding to the unregister
672 // request. This way, when the project's host can keep track of the project's
673 // remote id until after they've received the `UpdateContacts` message for
674 // themself.
675 self.update_user_contacts(user_id).await?;
676 response.send(proto::Ack {})?;
677
678 Ok(())
679 }
680
681 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
682 let contacts = self.app_state.db.get_contacts(user_id).await?;
683 let store = self.store().await;
684 let updated_contact = store.contact_for_user(user_id, false);
685 for contact in contacts {
686 if let db::Contact::Accepted {
687 user_id: contact_user_id,
688 ..
689 } = contact
690 {
691 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
692 self.peer
693 .send(
694 contact_conn_id,
695 proto::UpdateContacts {
696 contacts: vec![updated_contact.clone()],
697 remove_contacts: Default::default(),
698 incoming_requests: Default::default(),
699 remove_incoming_requests: Default::default(),
700 outgoing_requests: Default::default(),
701 remove_outgoing_requests: Default::default(),
702 },
703 )
704 .trace_err();
705 }
706 }
707 }
708 Ok(())
709 }
710
711 async fn join_project(
712 self: Arc<Server>,
713 request: TypedEnvelope<proto::JoinProject>,
714 response: Response<proto::JoinProject>,
715 ) -> Result<()> {
716 let project_id = ProjectId::from_proto(request.payload.project_id);
717
718 let host_user_id;
719 let guest_user_id;
720 let host_connection_id;
721 {
722 let state = self.store().await;
723 let project = state.project(project_id)?;
724 host_user_id = project.host.user_id;
725 host_connection_id = project.host_connection_id;
726 guest_user_id = state.user_id_for_connection(request.sender_id)?;
727 };
728
729 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
730 let has_contact = self
731 .app_state
732 .db
733 .has_contact(guest_user_id, host_user_id)
734 .await?;
735 if !has_contact {
736 return Err(anyhow!("no such project"))?;
737 }
738
739 self.store().await.request_join_project(
740 guest_user_id,
741 project_id,
742 response.into_receipt(),
743 )?;
744 self.peer.send(
745 host_connection_id,
746 proto::RequestJoinProject {
747 project_id: project_id.to_proto(),
748 requester_id: guest_user_id.to_proto(),
749 },
750 )?;
751 Ok(())
752 }
753
754 async fn respond_to_join_project_request(
755 self: Arc<Server>,
756 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
757 ) -> Result<()> {
758 let host_user_id;
759
760 {
761 let mut state = self.store().await;
762 let project_id = ProjectId::from_proto(request.payload.project_id);
763 let project = state.project(project_id)?;
764 if project.host_connection_id != request.sender_id {
765 Err(anyhow!("no such connection"))?;
766 }
767
768 host_user_id = project.host.user_id;
769 let guest_user_id = UserId::from_proto(request.payload.requester_id);
770
771 if !request.payload.allow {
772 let receipts = state
773 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
774 .ok_or_else(|| anyhow!("no such request"))?;
775 for receipt in receipts {
776 self.peer.respond(
777 receipt,
778 proto::JoinProjectResponse {
779 variant: Some(proto::join_project_response::Variant::Decline(
780 proto::join_project_response::Decline {
781 reason: proto::join_project_response::decline::Reason::Declined
782 as i32,
783 },
784 )),
785 },
786 )?;
787 }
788 return Ok(());
789 }
790
791 let (receipts_with_replica_ids, project) = state
792 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
793 .ok_or_else(|| anyhow!("no such request"))?;
794
795 let peer_count = project.guests.len();
796 let mut collaborators = Vec::with_capacity(peer_count);
797 collaborators.push(proto::Collaborator {
798 peer_id: project.host_connection_id.0,
799 replica_id: 0,
800 user_id: project.host.user_id.to_proto(),
801 });
802 let worktrees = project
803 .worktrees
804 .iter()
805 .map(|(id, worktree)| proto::WorktreeMetadata {
806 id: *id,
807 root_name: worktree.root_name.clone(),
808 visible: worktree.visible,
809 })
810 .collect::<Vec<_>>();
811
812 // Add all guests other than the requesting user's own connections as collaborators
813 for (guest_conn_id, guest) in &project.guests {
814 if receipts_with_replica_ids
815 .iter()
816 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
817 {
818 collaborators.push(proto::Collaborator {
819 peer_id: guest_conn_id.0,
820 replica_id: guest.replica_id as u32,
821 user_id: guest.user_id.to_proto(),
822 });
823 }
824 }
825
826 for conn_id in project.connection_ids() {
827 for (receipt, replica_id) in &receipts_with_replica_ids {
828 if conn_id != receipt.sender_id {
829 self.peer.send(
830 conn_id,
831 proto::AddProjectCollaborator {
832 project_id: project_id.to_proto(),
833 collaborator: Some(proto::Collaborator {
834 peer_id: receipt.sender_id.0,
835 replica_id: *replica_id as u32,
836 user_id: guest_user_id.to_proto(),
837 }),
838 },
839 )?;
840 }
841 }
842 }
843
844 // First, we send the metadata associated with each worktree.
845 for (receipt, replica_id) in &receipts_with_replica_ids {
846 self.peer.respond(
847 *receipt,
848 proto::JoinProjectResponse {
849 variant: Some(proto::join_project_response::Variant::Accept(
850 proto::join_project_response::Accept {
851 worktrees: worktrees.clone(),
852 replica_id: *replica_id as u32,
853 collaborators: collaborators.clone(),
854 language_servers: project.language_servers.clone(),
855 },
856 )),
857 },
858 )?;
859 }
860
861 for (worktree_id, worktree) in &project.worktrees {
862 #[cfg(any(test, feature = "test-support"))]
863 const MAX_CHUNK_SIZE: usize = 2;
864 #[cfg(not(any(test, feature = "test-support")))]
865 const MAX_CHUNK_SIZE: usize = 256;
866
867 // Stream this worktree's entries.
868 let message = proto::UpdateWorktree {
869 project_id: project_id.to_proto(),
870 worktree_id: *worktree_id,
871 root_name: worktree.root_name.clone(),
872 updated_entries: worktree.entries.values().cloned().collect(),
873 removed_entries: Default::default(),
874 scan_id: worktree.scan_id,
875 is_last_update: worktree.is_complete,
876 };
877 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
878 for (receipt, _) in &receipts_with_replica_ids {
879 self.peer.send(receipt.sender_id, update.clone())?;
880 }
881 }
882
883 // Stream this worktree's diagnostics.
884 for summary in worktree.diagnostic_summaries.values() {
885 for (receipt, _) in &receipts_with_replica_ids {
886 self.peer.send(
887 receipt.sender_id,
888 proto::UpdateDiagnosticSummary {
889 project_id: project_id.to_proto(),
890 worktree_id: *worktree_id,
891 summary: Some(summary.clone()),
892 },
893 )?;
894 }
895 }
896 }
897 }
898
899 self.update_user_contacts(host_user_id).await?;
900 Ok(())
901 }
902
903 async fn leave_project(
904 self: Arc<Server>,
905 request: TypedEnvelope<proto::LeaveProject>,
906 ) -> Result<()> {
907 let sender_id = request.sender_id;
908 let project_id = ProjectId::from_proto(request.payload.project_id);
909 let project;
910 {
911 let mut store = self.store().await;
912 project = store.leave_project(sender_id, project_id)?;
913 tracing::info!(
914 %project_id,
915 host_user_id = %project.host_user_id,
916 host_connection_id = %project.host_connection_id,
917 "leave project"
918 );
919
920 if project.remove_collaborator {
921 broadcast(sender_id, project.connection_ids, |conn_id| {
922 self.peer.send(
923 conn_id,
924 proto::RemoveProjectCollaborator {
925 project_id: project_id.to_proto(),
926 peer_id: sender_id.0,
927 },
928 )
929 });
930 }
931
932 if let Some(requester_id) = project.cancel_request {
933 self.peer.send(
934 project.host_connection_id,
935 proto::JoinProjectRequestCancelled {
936 project_id: project_id.to_proto(),
937 requester_id: requester_id.to_proto(),
938 },
939 )?;
940 }
941
942 if project.unshare {
943 self.peer.send(
944 project.host_connection_id,
945 proto::ProjectUnshared {
946 project_id: project_id.to_proto(),
947 },
948 )?;
949 }
950 }
951 self.update_user_contacts(project.host_user_id).await?;
952 Ok(())
953 }
954
955 async fn update_project(
956 self: Arc<Server>,
957 request: TypedEnvelope<proto::UpdateProject>,
958 ) -> Result<()> {
959 let project_id = ProjectId::from_proto(request.payload.project_id);
960 let user_id;
961 {
962 let mut state = self.store().await;
963 user_id = state.user_id_for_connection(request.sender_id)?;
964 let guest_connection_ids = state
965 .read_project(project_id, request.sender_id)?
966 .guest_connection_ids();
967 let unshared_project = state.update_project(
968 project_id,
969 &request.payload.worktrees,
970 request.payload.online,
971 request.sender_id,
972 )?;
973
974 if let Some(unshared_project) = unshared_project {
975 broadcast(
976 request.sender_id,
977 unshared_project.guests.keys().copied(),
978 |conn_id| {
979 self.peer.send(
980 conn_id,
981 proto::UnregisterProject {
982 project_id: project_id.to_proto(),
983 },
984 )
985 },
986 );
987 for (_, receipts) in unshared_project.pending_join_requests {
988 for receipt in receipts {
989 self.peer.respond(
990 receipt,
991 proto::JoinProjectResponse {
992 variant: Some(proto::join_project_response::Variant::Decline(
993 proto::join_project_response::Decline {
994 reason:
995 proto::join_project_response::decline::Reason::Closed
996 as i32,
997 },
998 )),
999 },
1000 )?;
1001 }
1002 }
1003 } else {
1004 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
1005 self.peer.forward_send(
1006 request.sender_id,
1007 connection_id,
1008 request.payload.clone(),
1009 )
1010 });
1011 }
1012 };
1013
1014 self.update_user_contacts(user_id).await?;
1015 Ok(())
1016 }
1017
1018 async fn register_project_activity(
1019 self: Arc<Server>,
1020 request: TypedEnvelope<proto::RegisterProjectActivity>,
1021 ) -> Result<()> {
1022 self.store().await.register_project_activity(
1023 ProjectId::from_proto(request.payload.project_id),
1024 request.sender_id,
1025 )?;
1026 Ok(())
1027 }
1028
1029 async fn update_worktree(
1030 self: Arc<Server>,
1031 request: TypedEnvelope<proto::UpdateWorktree>,
1032 response: Response<proto::UpdateWorktree>,
1033 ) -> Result<()> {
1034 let project_id = ProjectId::from_proto(request.payload.project_id);
1035 let worktree_id = request.payload.worktree_id;
1036 let (connection_ids, metadata_changed) = {
1037 let mut store = self.store().await;
1038 let (connection_ids, metadata_changed) = store.update_worktree(
1039 request.sender_id,
1040 project_id,
1041 worktree_id,
1042 &request.payload.root_name,
1043 &request.payload.removed_entries,
1044 &request.payload.updated_entries,
1045 request.payload.scan_id,
1046 request.payload.is_last_update,
1047 )?;
1048 (connection_ids, metadata_changed)
1049 };
1050
1051 broadcast(request.sender_id, connection_ids, |connection_id| {
1052 self.peer
1053 .forward_send(request.sender_id, connection_id, request.payload.clone())
1054 });
1055 if metadata_changed {
1056 let user_id = self
1057 .store()
1058 .await
1059 .user_id_for_connection(request.sender_id)?;
1060 self.update_user_contacts(user_id).await?;
1061 }
1062 response.send(proto::Ack {})?;
1063 Ok(())
1064 }
1065
1066 async fn update_worktree_extensions(
1067 self: Arc<Server>,
1068 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1069 ) -> Result<()> {
1070 let project_id = ProjectId::from_proto(request.payload.project_id);
1071 let worktree_id = request.payload.worktree_id;
1072 let extensions = request
1073 .payload
1074 .extensions
1075 .into_iter()
1076 .zip(request.payload.counts)
1077 .collect();
1078 self.app_state
1079 .db
1080 .update_worktree_extensions(project_id, worktree_id, extensions)
1081 .await?;
1082 Ok(())
1083 }
1084
1085 async fn update_diagnostic_summary(
1086 self: Arc<Server>,
1087 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1088 ) -> Result<()> {
1089 let summary = request
1090 .payload
1091 .summary
1092 .clone()
1093 .ok_or_else(|| anyhow!("invalid summary"))?;
1094 let receiver_ids = self.store().await.update_diagnostic_summary(
1095 ProjectId::from_proto(request.payload.project_id),
1096 request.payload.worktree_id,
1097 request.sender_id,
1098 summary,
1099 )?;
1100
1101 broadcast(request.sender_id, receiver_ids, |connection_id| {
1102 self.peer
1103 .forward_send(request.sender_id, connection_id, request.payload.clone())
1104 });
1105 Ok(())
1106 }
1107
1108 async fn start_language_server(
1109 self: Arc<Server>,
1110 request: TypedEnvelope<proto::StartLanguageServer>,
1111 ) -> Result<()> {
1112 let receiver_ids = self.store().await.start_language_server(
1113 ProjectId::from_proto(request.payload.project_id),
1114 request.sender_id,
1115 request
1116 .payload
1117 .server
1118 .clone()
1119 .ok_or_else(|| anyhow!("invalid language server"))?,
1120 )?;
1121 broadcast(request.sender_id, receiver_ids, |connection_id| {
1122 self.peer
1123 .forward_send(request.sender_id, connection_id, request.payload.clone())
1124 });
1125 Ok(())
1126 }
1127
1128 async fn update_language_server(
1129 self: Arc<Server>,
1130 request: TypedEnvelope<proto::UpdateLanguageServer>,
1131 ) -> Result<()> {
1132 let receiver_ids = self.store().await.project_connection_ids(
1133 ProjectId::from_proto(request.payload.project_id),
1134 request.sender_id,
1135 )?;
1136 broadcast(request.sender_id, receiver_ids, |connection_id| {
1137 self.peer
1138 .forward_send(request.sender_id, connection_id, request.payload.clone())
1139 });
1140 Ok(())
1141 }
1142
1143 async fn forward_project_request<T>(
1144 self: Arc<Server>,
1145 request: TypedEnvelope<T>,
1146 response: Response<T>,
1147 ) -> Result<()>
1148 where
1149 T: EntityMessage + RequestMessage,
1150 {
1151 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1152 let host_connection_id = self
1153 .store()
1154 .await
1155 .read_project(project_id, request.sender_id)?
1156 .host_connection_id;
1157 let payload = self
1158 .peer
1159 .forward_request(request.sender_id, host_connection_id, request.payload)
1160 .await?;
1161
1162 // Ensure project still exists by the time we get the response from the host.
1163 self.store()
1164 .await
1165 .read_project(project_id, request.sender_id)?;
1166
1167 response.send(payload)?;
1168 Ok(())
1169 }
1170
1171 async fn save_buffer(
1172 self: Arc<Server>,
1173 request: TypedEnvelope<proto::SaveBuffer>,
1174 response: Response<proto::SaveBuffer>,
1175 ) -> Result<()> {
1176 let project_id = ProjectId::from_proto(request.payload.project_id);
1177 let host = self
1178 .store()
1179 .await
1180 .read_project(project_id, request.sender_id)?
1181 .host_connection_id;
1182 let response_payload = self
1183 .peer
1184 .forward_request(request.sender_id, host, request.payload.clone())
1185 .await?;
1186
1187 let mut guests = self
1188 .store()
1189 .await
1190 .read_project(project_id, request.sender_id)?
1191 .connection_ids();
1192 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1193 broadcast(host, guests, |conn_id| {
1194 self.peer
1195 .forward_send(host, conn_id, response_payload.clone())
1196 });
1197 response.send(response_payload)?;
1198 Ok(())
1199 }
1200
1201 async fn create_buffer_for_peer(
1202 self: Arc<Server>,
1203 request: TypedEnvelope<proto::CreateBufferForPeer>,
1204 ) -> Result<()> {
1205 self.peer.forward_send(
1206 request.sender_id,
1207 ConnectionId(request.payload.peer_id),
1208 request.payload,
1209 )?;
1210 Ok(())
1211 }
1212
1213 async fn update_buffer(
1214 self: Arc<Server>,
1215 request: TypedEnvelope<proto::UpdateBuffer>,
1216 response: Response<proto::UpdateBuffer>,
1217 ) -> Result<()> {
1218 let project_id = ProjectId::from_proto(request.payload.project_id);
1219 let receiver_ids = {
1220 let mut store = self.store().await;
1221 store.register_project_activity(project_id, request.sender_id)?;
1222 store.project_connection_ids(project_id, request.sender_id)?
1223 };
1224
1225 broadcast(request.sender_id, receiver_ids, |connection_id| {
1226 self.peer
1227 .forward_send(request.sender_id, connection_id, request.payload.clone())
1228 });
1229 response.send(proto::Ack {})?;
1230 Ok(())
1231 }
1232
1233 async fn update_buffer_file(
1234 self: Arc<Server>,
1235 request: TypedEnvelope<proto::UpdateBufferFile>,
1236 ) -> Result<()> {
1237 let receiver_ids = self.store().await.project_connection_ids(
1238 ProjectId::from_proto(request.payload.project_id),
1239 request.sender_id,
1240 )?;
1241 broadcast(request.sender_id, receiver_ids, |connection_id| {
1242 self.peer
1243 .forward_send(request.sender_id, connection_id, request.payload.clone())
1244 });
1245 Ok(())
1246 }
1247
1248 async fn buffer_reloaded(
1249 self: Arc<Server>,
1250 request: TypedEnvelope<proto::BufferReloaded>,
1251 ) -> Result<()> {
1252 let receiver_ids = self.store().await.project_connection_ids(
1253 ProjectId::from_proto(request.payload.project_id),
1254 request.sender_id,
1255 )?;
1256 broadcast(request.sender_id, receiver_ids, |connection_id| {
1257 self.peer
1258 .forward_send(request.sender_id, connection_id, request.payload.clone())
1259 });
1260 Ok(())
1261 }
1262
1263 async fn buffer_saved(
1264 self: Arc<Server>,
1265 request: TypedEnvelope<proto::BufferSaved>,
1266 ) -> Result<()> {
1267 let receiver_ids = self.store().await.project_connection_ids(
1268 ProjectId::from_proto(request.payload.project_id),
1269 request.sender_id,
1270 )?;
1271 broadcast(request.sender_id, receiver_ids, |connection_id| {
1272 self.peer
1273 .forward_send(request.sender_id, connection_id, request.payload.clone())
1274 });
1275 Ok(())
1276 }
1277
1278 async fn follow(
1279 self: Arc<Self>,
1280 request: TypedEnvelope<proto::Follow>,
1281 response: Response<proto::Follow>,
1282 ) -> Result<()> {
1283 let project_id = ProjectId::from_proto(request.payload.project_id);
1284 let leader_id = ConnectionId(request.payload.leader_id);
1285 let follower_id = request.sender_id;
1286 {
1287 let mut store = self.store().await;
1288 if !store
1289 .project_connection_ids(project_id, follower_id)?
1290 .contains(&leader_id)
1291 {
1292 Err(anyhow!("no such peer"))?;
1293 }
1294
1295 store.register_project_activity(project_id, follower_id)?;
1296 }
1297
1298 let mut response_payload = self
1299 .peer
1300 .forward_request(request.sender_id, leader_id, request.payload)
1301 .await?;
1302 response_payload
1303 .views
1304 .retain(|view| view.leader_id != Some(follower_id.0));
1305 response.send(response_payload)?;
1306 Ok(())
1307 }
1308
1309 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1310 let project_id = ProjectId::from_proto(request.payload.project_id);
1311 let leader_id = ConnectionId(request.payload.leader_id);
1312 let mut store = self.store().await;
1313 if !store
1314 .project_connection_ids(project_id, request.sender_id)?
1315 .contains(&leader_id)
1316 {
1317 Err(anyhow!("no such peer"))?;
1318 }
1319 store.register_project_activity(project_id, request.sender_id)?;
1320 self.peer
1321 .forward_send(request.sender_id, leader_id, request.payload)?;
1322 Ok(())
1323 }
1324
1325 async fn update_followers(
1326 self: Arc<Self>,
1327 request: TypedEnvelope<proto::UpdateFollowers>,
1328 ) -> Result<()> {
1329 let project_id = ProjectId::from_proto(request.payload.project_id);
1330 let mut store = self.store().await;
1331 store.register_project_activity(project_id, request.sender_id)?;
1332 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1333 let leader_id = request
1334 .payload
1335 .variant
1336 .as_ref()
1337 .and_then(|variant| match variant {
1338 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1339 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1340 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1341 });
1342 for follower_id in &request.payload.follower_ids {
1343 let follower_id = ConnectionId(*follower_id);
1344 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1345 self.peer
1346 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1347 }
1348 }
1349 Ok(())
1350 }
1351
1352 async fn get_channels(
1353 self: Arc<Server>,
1354 request: TypedEnvelope<proto::GetChannels>,
1355 response: Response<proto::GetChannels>,
1356 ) -> Result<()> {
1357 let user_id = self
1358 .store()
1359 .await
1360 .user_id_for_connection(request.sender_id)?;
1361 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1362 response.send(proto::GetChannelsResponse {
1363 channels: channels
1364 .into_iter()
1365 .map(|chan| proto::Channel {
1366 id: chan.id.to_proto(),
1367 name: chan.name,
1368 })
1369 .collect(),
1370 })?;
1371 Ok(())
1372 }
1373
1374 async fn get_users(
1375 self: Arc<Server>,
1376 request: TypedEnvelope<proto::GetUsers>,
1377 response: Response<proto::GetUsers>,
1378 ) -> Result<()> {
1379 let user_ids = request
1380 .payload
1381 .user_ids
1382 .into_iter()
1383 .map(UserId::from_proto)
1384 .collect();
1385 let users = self
1386 .app_state
1387 .db
1388 .get_users_by_ids(user_ids)
1389 .await?
1390 .into_iter()
1391 .map(|user| proto::User {
1392 id: user.id.to_proto(),
1393 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1394 github_login: user.github_login,
1395 })
1396 .collect();
1397 response.send(proto::UsersResponse { users })?;
1398 Ok(())
1399 }
1400
1401 async fn fuzzy_search_users(
1402 self: Arc<Server>,
1403 request: TypedEnvelope<proto::FuzzySearchUsers>,
1404 response: Response<proto::FuzzySearchUsers>,
1405 ) -> Result<()> {
1406 let user_id = self
1407 .store()
1408 .await
1409 .user_id_for_connection(request.sender_id)?;
1410 let query = request.payload.query;
1411 let db = &self.app_state.db;
1412 let users = match query.len() {
1413 0 => vec![],
1414 1 | 2 => db
1415 .get_user_by_github_login(&query)
1416 .await?
1417 .into_iter()
1418 .collect(),
1419 _ => db.fuzzy_search_users(&query, 10).await?,
1420 };
1421 let users = users
1422 .into_iter()
1423 .filter(|user| user.id != user_id)
1424 .map(|user| proto::User {
1425 id: user.id.to_proto(),
1426 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1427 github_login: user.github_login,
1428 })
1429 .collect();
1430 response.send(proto::UsersResponse { users })?;
1431 Ok(())
1432 }
1433
1434 async fn request_contact(
1435 self: Arc<Server>,
1436 request: TypedEnvelope<proto::RequestContact>,
1437 response: Response<proto::RequestContact>,
1438 ) -> Result<()> {
1439 let requester_id = self
1440 .store()
1441 .await
1442 .user_id_for_connection(request.sender_id)?;
1443 let responder_id = UserId::from_proto(request.payload.responder_id);
1444 if requester_id == responder_id {
1445 return Err(anyhow!("cannot add yourself as a contact"))?;
1446 }
1447
1448 self.app_state
1449 .db
1450 .send_contact_request(requester_id, responder_id)
1451 .await?;
1452
1453 // Update outgoing contact requests of requester
1454 let mut update = proto::UpdateContacts::default();
1455 update.outgoing_requests.push(responder_id.to_proto());
1456 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1457 self.peer.send(connection_id, update.clone())?;
1458 }
1459
1460 // Update incoming contact requests of responder
1461 let mut update = proto::UpdateContacts::default();
1462 update
1463 .incoming_requests
1464 .push(proto::IncomingContactRequest {
1465 requester_id: requester_id.to_proto(),
1466 should_notify: true,
1467 });
1468 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1469 self.peer.send(connection_id, update.clone())?;
1470 }
1471
1472 response.send(proto::Ack {})?;
1473 Ok(())
1474 }
1475
1476 async fn respond_to_contact_request(
1477 self: Arc<Server>,
1478 request: TypedEnvelope<proto::RespondToContactRequest>,
1479 response: Response<proto::RespondToContactRequest>,
1480 ) -> Result<()> {
1481 let responder_id = self
1482 .store()
1483 .await
1484 .user_id_for_connection(request.sender_id)?;
1485 let requester_id = UserId::from_proto(request.payload.requester_id);
1486 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1487 self.app_state
1488 .db
1489 .dismiss_contact_notification(responder_id, requester_id)
1490 .await?;
1491 } else {
1492 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1493 self.app_state
1494 .db
1495 .respond_to_contact_request(responder_id, requester_id, accept)
1496 .await?;
1497
1498 let store = self.store().await;
1499 // Update responder with new contact
1500 let mut update = proto::UpdateContacts::default();
1501 if accept {
1502 update
1503 .contacts
1504 .push(store.contact_for_user(requester_id, false));
1505 }
1506 update
1507 .remove_incoming_requests
1508 .push(requester_id.to_proto());
1509 for connection_id in store.connection_ids_for_user(responder_id) {
1510 self.peer.send(connection_id, update.clone())?;
1511 }
1512
1513 // Update requester with new contact
1514 let mut update = proto::UpdateContacts::default();
1515 if accept {
1516 update
1517 .contacts
1518 .push(store.contact_for_user(responder_id, true));
1519 }
1520 update
1521 .remove_outgoing_requests
1522 .push(responder_id.to_proto());
1523 for connection_id in store.connection_ids_for_user(requester_id) {
1524 self.peer.send(connection_id, update.clone())?;
1525 }
1526 }
1527
1528 response.send(proto::Ack {})?;
1529 Ok(())
1530 }
1531
1532 async fn remove_contact(
1533 self: Arc<Server>,
1534 request: TypedEnvelope<proto::RemoveContact>,
1535 response: Response<proto::RemoveContact>,
1536 ) -> Result<()> {
1537 let requester_id = self
1538 .store()
1539 .await
1540 .user_id_for_connection(request.sender_id)?;
1541 let responder_id = UserId::from_proto(request.payload.user_id);
1542 self.app_state
1543 .db
1544 .remove_contact(requester_id, responder_id)
1545 .await?;
1546
1547 // Update outgoing contact requests of requester
1548 let mut update = proto::UpdateContacts::default();
1549 update
1550 .remove_outgoing_requests
1551 .push(responder_id.to_proto());
1552 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1553 self.peer.send(connection_id, update.clone())?;
1554 }
1555
1556 // Update incoming contact requests of responder
1557 let mut update = proto::UpdateContacts::default();
1558 update
1559 .remove_incoming_requests
1560 .push(requester_id.to_proto());
1561 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1562 self.peer.send(connection_id, update.clone())?;
1563 }
1564
1565 response.send(proto::Ack {})?;
1566 Ok(())
1567 }
1568
1569 async fn join_channel(
1570 self: Arc<Self>,
1571 request: TypedEnvelope<proto::JoinChannel>,
1572 response: Response<proto::JoinChannel>,
1573 ) -> Result<()> {
1574 let user_id = self
1575 .store()
1576 .await
1577 .user_id_for_connection(request.sender_id)?;
1578 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1579 if !self
1580 .app_state
1581 .db
1582 .can_user_access_channel(user_id, channel_id)
1583 .await?
1584 {
1585 Err(anyhow!("access denied"))?;
1586 }
1587
1588 self.store()
1589 .await
1590 .join_channel(request.sender_id, channel_id);
1591 let messages = self
1592 .app_state
1593 .db
1594 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1595 .await?
1596 .into_iter()
1597 .map(|msg| proto::ChannelMessage {
1598 id: msg.id.to_proto(),
1599 body: msg.body,
1600 timestamp: msg.sent_at.unix_timestamp() as u64,
1601 sender_id: msg.sender_id.to_proto(),
1602 nonce: Some(msg.nonce.as_u128().into()),
1603 })
1604 .collect::<Vec<_>>();
1605 response.send(proto::JoinChannelResponse {
1606 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1607 messages,
1608 })?;
1609 Ok(())
1610 }
1611
1612 async fn leave_channel(
1613 self: Arc<Self>,
1614 request: TypedEnvelope<proto::LeaveChannel>,
1615 ) -> Result<()> {
1616 let user_id = self
1617 .store()
1618 .await
1619 .user_id_for_connection(request.sender_id)?;
1620 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1621 if !self
1622 .app_state
1623 .db
1624 .can_user_access_channel(user_id, channel_id)
1625 .await?
1626 {
1627 Err(anyhow!("access denied"))?;
1628 }
1629
1630 self.store()
1631 .await
1632 .leave_channel(request.sender_id, channel_id);
1633
1634 Ok(())
1635 }
1636
1637 async fn send_channel_message(
1638 self: Arc<Self>,
1639 request: TypedEnvelope<proto::SendChannelMessage>,
1640 response: Response<proto::SendChannelMessage>,
1641 ) -> Result<()> {
1642 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1643 let user_id;
1644 let connection_ids;
1645 {
1646 let state = self.store().await;
1647 user_id = state.user_id_for_connection(request.sender_id)?;
1648 connection_ids = state.channel_connection_ids(channel_id)?;
1649 }
1650
1651 // Validate the message body.
1652 let body = request.payload.body.trim().to_string();
1653 if body.len() > MAX_MESSAGE_LEN {
1654 return Err(anyhow!("message is too long"))?;
1655 }
1656 if body.is_empty() {
1657 return Err(anyhow!("message can't be blank"))?;
1658 }
1659
1660 let timestamp = OffsetDateTime::now_utc();
1661 let nonce = request
1662 .payload
1663 .nonce
1664 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1665
1666 let message_id = self
1667 .app_state
1668 .db
1669 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1670 .await?
1671 .to_proto();
1672 let message = proto::ChannelMessage {
1673 sender_id: user_id.to_proto(),
1674 id: message_id,
1675 body,
1676 timestamp: timestamp.unix_timestamp() as u64,
1677 nonce: Some(nonce),
1678 };
1679 broadcast(request.sender_id, connection_ids, |conn_id| {
1680 self.peer.send(
1681 conn_id,
1682 proto::ChannelMessageSent {
1683 channel_id: channel_id.to_proto(),
1684 message: Some(message.clone()),
1685 },
1686 )
1687 });
1688 response.send(proto::SendChannelMessageResponse {
1689 message: Some(message),
1690 })?;
1691 Ok(())
1692 }
1693
1694 async fn get_channel_messages(
1695 self: Arc<Self>,
1696 request: TypedEnvelope<proto::GetChannelMessages>,
1697 response: Response<proto::GetChannelMessages>,
1698 ) -> Result<()> {
1699 let user_id = self
1700 .store()
1701 .await
1702 .user_id_for_connection(request.sender_id)?;
1703 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1704 if !self
1705 .app_state
1706 .db
1707 .can_user_access_channel(user_id, channel_id)
1708 .await?
1709 {
1710 Err(anyhow!("access denied"))?;
1711 }
1712
1713 let messages = self
1714 .app_state
1715 .db
1716 .get_channel_messages(
1717 channel_id,
1718 MESSAGE_COUNT_PER_PAGE,
1719 Some(MessageId::from_proto(request.payload.before_message_id)),
1720 )
1721 .await?
1722 .into_iter()
1723 .map(|msg| proto::ChannelMessage {
1724 id: msg.id.to_proto(),
1725 body: msg.body,
1726 timestamp: msg.sent_at.unix_timestamp() as u64,
1727 sender_id: msg.sender_id.to_proto(),
1728 nonce: Some(msg.nonce.as_u128().into()),
1729 })
1730 .collect::<Vec<_>>();
1731 response.send(proto::GetChannelMessagesResponse {
1732 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1733 messages,
1734 })?;
1735 Ok(())
1736 }
1737
1738 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1739 #[cfg(test)]
1740 tokio::task::yield_now().await;
1741 let guard = self.store.lock().await;
1742 #[cfg(test)]
1743 tokio::task::yield_now().await;
1744 StoreGuard {
1745 guard,
1746 _not_send: PhantomData,
1747 }
1748 }
1749
1750 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1751 ServerSnapshot {
1752 store: self.store().await,
1753 peer: &self.peer,
1754 }
1755 }
1756}
1757
1758impl<'a> Deref for StoreGuard<'a> {
1759 type Target = Store;
1760
1761 fn deref(&self) -> &Self::Target {
1762 &*self.guard
1763 }
1764}
1765
1766impl<'a> DerefMut for StoreGuard<'a> {
1767 fn deref_mut(&mut self) -> &mut Self::Target {
1768 &mut *self.guard
1769 }
1770}
1771
1772impl<'a> Drop for StoreGuard<'a> {
1773 fn drop(&mut self) {
1774 #[cfg(test)]
1775 self.check_invariants();
1776 }
1777}
1778
1779impl Executor for RealExecutor {
1780 type Sleep = Sleep;
1781
1782 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1783 tokio::task::spawn(future);
1784 }
1785
1786 fn sleep(&self, duration: Duration) -> Self::Sleep {
1787 tokio::time::sleep(duration)
1788 }
1789}
1790
1791fn broadcast<F>(
1792 sender_id: ConnectionId,
1793 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1794 mut f: F,
1795) where
1796 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1797{
1798 for receiver_id in receiver_ids {
1799 if receiver_id != sender_id {
1800 f(receiver_id).trace_err();
1801 }
1802 }
1803}
1804
1805lazy_static! {
1806 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1807}
1808
1809pub struct ProtocolVersion(u32);
1810
1811impl Header for ProtocolVersion {
1812 fn name() -> &'static HeaderName {
1813 &ZED_PROTOCOL_VERSION
1814 }
1815
1816 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1817 where
1818 Self: Sized,
1819 I: Iterator<Item = &'i axum::http::HeaderValue>,
1820 {
1821 let version = values
1822 .next()
1823 .ok_or_else(axum::headers::Error::invalid)?
1824 .to_str()
1825 .map_err(|_| axum::headers::Error::invalid())?
1826 .parse()
1827 .map_err(|_| axum::headers::Error::invalid())?;
1828 Ok(Self(version))
1829 }
1830
1831 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1832 values.extend([self.0.to_string().parse().unwrap()]);
1833 }
1834}
1835
1836pub fn routes(server: Arc<Server>) -> Router<Body> {
1837 Router::new()
1838 .route("/rpc", get(handle_websocket_request))
1839 .layer(
1840 ServiceBuilder::new()
1841 .layer(Extension(server.app_state.clone()))
1842 .layer(middleware::from_fn(auth::validate_header)),
1843 )
1844 .route("/metrics", get(handle_metrics))
1845 .layer(Extension(server))
1846}
1847
1848pub async fn handle_websocket_request(
1849 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1850 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1851 Extension(server): Extension<Arc<Server>>,
1852 Extension(user): Extension<User>,
1853 ws: WebSocketUpgrade,
1854) -> axum::response::Response {
1855 if protocol_version != rpc::PROTOCOL_VERSION {
1856 return (
1857 StatusCode::UPGRADE_REQUIRED,
1858 "client must be upgraded".to_string(),
1859 )
1860 .into_response();
1861 }
1862 let socket_address = socket_address.to_string();
1863 ws.on_upgrade(move |socket| {
1864 use util::ResultExt;
1865 let socket = socket
1866 .map_ok(to_tungstenite_message)
1867 .err_into()
1868 .with(|message| async move { Ok(to_axum_message(message)) });
1869 let connection = Connection::new(Box::pin(socket));
1870 async move {
1871 server
1872 .handle_connection(connection, socket_address, user, None, RealExecutor)
1873 .await
1874 .log_err();
1875 }
1876 })
1877}
1878
1879pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1880 // We call `store_mut` here for its side effects of updating metrics.
1881 let metrics = server.store().await.metrics();
1882 METRIC_CONNECTIONS.set(metrics.connections as _);
1883 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1884 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1885 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1886
1887 let encoder = prometheus::TextEncoder::new();
1888 let metric_families = prometheus::gather();
1889 match encoder.encode_to_string(&metric_families) {
1890 Ok(string) => (StatusCode::OK, string).into_response(),
1891 Err(error) => (
1892 StatusCode::INTERNAL_SERVER_ERROR,
1893 format!("failed to encode metrics {:?}", error),
1894 )
1895 .into_response(),
1896 }
1897}
1898
1899fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1900 match message {
1901 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1902 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1903 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1904 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1905 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1906 code: frame.code.into(),
1907 reason: frame.reason,
1908 })),
1909 }
1910}
1911
1912fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1913 match message {
1914 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1915 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1916 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1917 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1918 AxumMessage::Close(frame) => {
1919 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1920 code: frame.code.into(),
1921 reason: frame.reason,
1922 }))
1923 }
1924 }
1925}
1926
1927pub trait ResultExt {
1928 type Ok;
1929
1930 fn trace_err(self) -> Option<Self::Ok>;
1931}
1932
1933impl<T, E> ResultExt for Result<T, E>
1934where
1935 E: std::fmt::Debug,
1936{
1937 type Ok = T;
1938
1939 fn trace_err(self) -> Option<T> {
1940 match self {
1941 Ok(value) => Some(value),
1942 Err(error) => {
1943 tracing::error!("{:?}", error);
1944 None
1945 }
1946 }
1947 }
1948}