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_request_handler(Server::update_buffer)
191 .add_message_handler(Server::update_buffer_file)
192 .add_message_handler(Server::buffer_reloaded)
193 .add_message_handler(Server::buffer_saved)
194 .add_request_handler(Server::save_buffer)
195 .add_request_handler(Server::get_channels)
196 .add_request_handler(Server::get_users)
197 .add_request_handler(Server::fuzzy_search_users)
198 .add_request_handler(Server::request_contact)
199 .add_request_handler(Server::remove_contact)
200 .add_request_handler(Server::respond_to_contact_request)
201 .add_request_handler(Server::join_channel)
202 .add_message_handler(Server::leave_channel)
203 .add_request_handler(Server::send_channel_message)
204 .add_request_handler(Server::follow)
205 .add_message_handler(Server::unfollow)
206 .add_message_handler(Server::update_followers)
207 .add_request_handler(Server::get_channel_messages);
208
209 Arc::new(server)
210 }
211
212 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
213 where
214 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
215 Fut: 'static + Send + Future<Output = Result<()>>,
216 M: EnvelopedMessage,
217 {
218 let prev_handler = self.handlers.insert(
219 TypeId::of::<M>(),
220 Box::new(move |server, envelope| {
221 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
222 let span = info_span!(
223 "handle message",
224 payload_type = envelope.payload_type_name()
225 );
226 span.in_scope(|| {
227 tracing::info!(
228 payload_type = envelope.payload_type_name(),
229 "message received"
230 );
231 });
232 let future = (handler)(server, *envelope);
233 async move {
234 if let Err(error) = future.await {
235 tracing::error!(%error, "error handling message");
236 }
237 }
238 .instrument(span)
239 .boxed()
240 }),
241 );
242 if prev_handler.is_some() {
243 panic!("registered a handler for the same message twice");
244 }
245 self
246 }
247
248 /// Handle a request while holding a lock to the store. This is useful when we're registering
249 /// a connection but we want to respond on the connection before anybody else can send on it.
250 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
251 where
252 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
253 Fut: Send + Future<Output = Result<()>>,
254 M: RequestMessage,
255 {
256 let handler = Arc::new(handler);
257 self.add_message_handler(move |server, envelope| {
258 let receipt = envelope.receipt();
259 let handler = handler.clone();
260 async move {
261 let responded = Arc::new(AtomicBool::default());
262 let response = Response {
263 server: server.clone(),
264 responded: responded.clone(),
265 receipt: envelope.receipt(),
266 };
267 match (handler)(server.clone(), envelope, response).await {
268 Ok(()) => {
269 if responded.load(std::sync::atomic::Ordering::SeqCst) {
270 Ok(())
271 } else {
272 Err(anyhow!("handler did not send a response"))?
273 }
274 }
275 Err(error) => {
276 server.peer.respond_with_error(
277 receipt,
278 proto::Error {
279 message: error.to_string(),
280 },
281 )?;
282 Err(error)
283 }
284 }
285 }
286 })
287 }
288
289 /// Start a long lived task that records which users are active in which projects.
290 pub fn start_recording_project_activity<E: 'static + Executor>(
291 self: &Arc<Self>,
292 interval: Duration,
293 executor: E,
294 ) {
295 executor.spawn_detached({
296 let this = Arc::downgrade(self);
297 let executor = executor.clone();
298 async move {
299 let mut period_start = OffsetDateTime::now_utc();
300 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
301 loop {
302 let sleep = executor.sleep(interval);
303 sleep.await;
304 let this = if let Some(this) = this.upgrade() {
305 this
306 } else {
307 break;
308 };
309
310 active_projects.clear();
311 active_projects.extend(this.store().await.projects().flat_map(
312 |(project_id, project)| {
313 project.guests.values().chain([&project.host]).filter_map(
314 |collaborator| {
315 if !collaborator.admin
316 && collaborator
317 .last_activity
318 .map_or(false, |activity| activity > period_start)
319 {
320 Some((collaborator.user_id, *project_id))
321 } else {
322 None
323 }
324 },
325 )
326 },
327 ));
328
329 let period_end = OffsetDateTime::now_utc();
330 this.app_state
331 .db
332 .record_user_activity(period_start..period_end, &active_projects)
333 .await
334 .trace_err();
335 period_start = period_end;
336 }
337 }
338 });
339 }
340
341 pub fn handle_connection<E: Executor>(
342 self: &Arc<Self>,
343 connection: Connection,
344 address: String,
345 user: User,
346 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
347 executor: E,
348 ) -> impl Future<Output = Result<()>> {
349 let mut this = self.clone();
350 let user_id = user.id;
351 let login = user.github_login;
352 let span = info_span!("handle connection", %user_id, %login, %address);
353 async move {
354 let (connection_id, handle_io, mut incoming_rx) = this
355 .peer
356 .add_connection(connection, {
357 let executor = executor.clone();
358 move |duration| {
359 let timer = executor.sleep(duration);
360 async move {
361 timer.await;
362 }
363 }
364 })
365 .await;
366
367 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
368
369 if let Some(send_connection_id) = send_connection_id.as_mut() {
370 let _ = send_connection_id.send(connection_id).await;
371 }
372
373 if !user.connected_once {
374 this.peer.send(connection_id, proto::ShowContacts {})?;
375 this.app_state.db.set_user_connected_once(user_id, true).await?;
376 }
377
378 let (contacts, invite_code) = future::try_join(
379 this.app_state.db.get_contacts(user_id),
380 this.app_state.db.get_invite_code_for_user(user_id)
381 ).await?;
382
383 {
384 let mut store = this.store().await;
385 store.add_connection(connection_id, user_id, user.admin);
386 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
387
388 if let Some((code, count)) = invite_code {
389 this.peer.send(connection_id, proto::UpdateInviteInfo {
390 url: format!("{}{}", this.app_state.invite_link_prefix, code),
391 count,
392 })?;
393 }
394 }
395 this.update_user_contacts(user_id).await?;
396
397 let handle_io = handle_io.fuse();
398 futures::pin_mut!(handle_io);
399
400 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
401 // This prevents deadlocks when e.g., client A performs a request to client B and
402 // client B performs a request to client A. If both clients stop processing further
403 // messages until their respective request completes, they won't have a chance to
404 // respond to the other client's request and cause a deadlock.
405 //
406 // This arrangement ensures we will attempt to process earlier messages first, but fall
407 // back to processing messages arrived later in the spirit of making progress.
408 let mut foreground_message_handlers = FuturesUnordered::new();
409 loop {
410 let next_message = incoming_rx.next().fuse();
411 futures::pin_mut!(next_message);
412 futures::select_biased! {
413 result = handle_io => {
414 if let Err(error) = result {
415 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
416 }
417 break;
418 }
419 _ = foreground_message_handlers.next() => {}
420 message = next_message => {
421 if let Some(message) = message {
422 let type_name = message.payload_type_name();
423 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
424 let span_enter = span.enter();
425 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
426 let notifications = this.notifications.clone();
427 let is_background = message.is_background();
428 let handle_message = (handler)(this.clone(), message);
429
430 drop(span_enter);
431 let handle_message = async move {
432 handle_message.await;
433 if let Some(mut notifications) = notifications {
434 let _ = notifications.send(()).await;
435 }
436 }.instrument(span);
437
438 if is_background {
439 executor.spawn_detached(handle_message);
440 } else {
441 foreground_message_handlers.push(handle_message);
442 }
443 } else {
444 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
445 }
446 } else {
447 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
448 break;
449 }
450 }
451 }
452 }
453
454 drop(foreground_message_handlers);
455 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
456 if let Err(error) = this.sign_out(connection_id).await {
457 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
458 }
459
460 Ok(())
461 }.instrument(span)
462 }
463
464 #[instrument(skip(self), err)]
465 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
466 self.peer.disconnect(connection_id);
467
468 let mut projects_to_unregister = Vec::new();
469 let removed_user_id;
470 {
471 let mut store = self.store().await;
472 let removed_connection = store.remove_connection(connection_id)?;
473
474 for (project_id, project) in removed_connection.hosted_projects {
475 projects_to_unregister.push(project_id);
476 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
477 self.peer.send(
478 conn_id,
479 proto::UnregisterProject {
480 project_id: project_id.to_proto(),
481 },
482 )
483 });
484
485 for (_, receipts) in project.join_requests {
486 for receipt in receipts {
487 self.peer.respond(
488 receipt,
489 proto::JoinProjectResponse {
490 variant: Some(proto::join_project_response::Variant::Decline(
491 proto::join_project_response::Decline {
492 reason: proto::join_project_response::decline::Reason::WentOffline as i32
493 },
494 )),
495 },
496 )?;
497 }
498 }
499 }
500
501 for project_id in removed_connection.guest_project_ids {
502 if let Some(project) = store.project(project_id).trace_err() {
503 broadcast(connection_id, project.connection_ids(), |conn_id| {
504 self.peer.send(
505 conn_id,
506 proto::RemoveProjectCollaborator {
507 project_id: project_id.to_proto(),
508 peer_id: connection_id.0,
509 },
510 )
511 });
512 if project.guests.is_empty() {
513 self.peer
514 .send(
515 project.host_connection_id,
516 proto::ProjectUnshared {
517 project_id: project_id.to_proto(),
518 },
519 )
520 .trace_err();
521 }
522 }
523 }
524
525 removed_user_id = removed_connection.user_id;
526 };
527
528 self.update_user_contacts(removed_user_id).await.trace_err();
529
530 for project_id in projects_to_unregister {
531 self.app_state
532 .db
533 .unregister_project(project_id)
534 .await
535 .trace_err();
536 }
537
538 Ok(())
539 }
540
541 pub async fn invite_code_redeemed(
542 self: &Arc<Self>,
543 code: &str,
544 invitee_id: UserId,
545 ) -> Result<()> {
546 let user = self.app_state.db.get_user_for_invite_code(code).await?;
547 let store = self.store().await;
548 let invitee_contact = store.contact_for_user(invitee_id, true);
549 for connection_id in store.connection_ids_for_user(user.id) {
550 self.peer.send(
551 connection_id,
552 proto::UpdateContacts {
553 contacts: vec![invitee_contact.clone()],
554 ..Default::default()
555 },
556 )?;
557 self.peer.send(
558 connection_id,
559 proto::UpdateInviteInfo {
560 url: format!("{}{}", self.app_state.invite_link_prefix, code),
561 count: user.invite_count as u32,
562 },
563 )?;
564 }
565 Ok(())
566 }
567
568 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
569 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
570 if let Some(invite_code) = &user.invite_code {
571 let store = self.store().await;
572 for connection_id in store.connection_ids_for_user(user_id) {
573 self.peer.send(
574 connection_id,
575 proto::UpdateInviteInfo {
576 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
577 count: user.invite_count as u32,
578 },
579 )?;
580 }
581 }
582 }
583 Ok(())
584 }
585
586 async fn ping(
587 self: Arc<Server>,
588 _: TypedEnvelope<proto::Ping>,
589 response: Response<proto::Ping>,
590 ) -> Result<()> {
591 response.send(proto::Ack {})?;
592 Ok(())
593 }
594
595 async fn register_project(
596 self: Arc<Server>,
597 request: TypedEnvelope<proto::RegisterProject>,
598 response: Response<proto::RegisterProject>,
599 ) -> Result<()> {
600 let user_id = self
601 .store()
602 .await
603 .user_id_for_connection(request.sender_id)?;
604 let project_id = self.app_state.db.register_project(user_id).await?;
605 self.store().await.register_project(
606 request.sender_id,
607 project_id,
608 request.payload.online,
609 )?;
610
611 response.send(proto::RegisterProjectResponse {
612 project_id: project_id.to_proto(),
613 })?;
614
615 Ok(())
616 }
617
618 async fn unregister_project(
619 self: Arc<Server>,
620 request: TypedEnvelope<proto::UnregisterProject>,
621 response: Response<proto::UnregisterProject>,
622 ) -> Result<()> {
623 let project_id = ProjectId::from_proto(request.payload.project_id);
624 let (user_id, project) = {
625 let mut state = self.store().await;
626 let project = state.unregister_project(project_id, request.sender_id)?;
627 (state.user_id_for_connection(request.sender_id)?, project)
628 };
629 self.app_state.db.unregister_project(project_id).await?;
630
631 broadcast(
632 request.sender_id,
633 project.guests.keys().copied(),
634 |conn_id| {
635 self.peer.send(
636 conn_id,
637 proto::UnregisterProject {
638 project_id: project_id.to_proto(),
639 },
640 )
641 },
642 );
643 for (_, receipts) in project.join_requests {
644 for receipt in receipts {
645 self.peer.respond(
646 receipt,
647 proto::JoinProjectResponse {
648 variant: Some(proto::join_project_response::Variant::Decline(
649 proto::join_project_response::Decline {
650 reason: proto::join_project_response::decline::Reason::Closed
651 as i32,
652 },
653 )),
654 },
655 )?;
656 }
657 }
658
659 // Send out the `UpdateContacts` message before responding to the unregister
660 // request. This way, when the project's host can keep track of the project's
661 // remote id until after they've received the `UpdateContacts` message for
662 // themself.
663 self.update_user_contacts(user_id).await?;
664 response.send(proto::Ack {})?;
665
666 Ok(())
667 }
668
669 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
670 let contacts = self.app_state.db.get_contacts(user_id).await?;
671 let store = self.store().await;
672 let updated_contact = store.contact_for_user(user_id, false);
673 for contact in contacts {
674 if let db::Contact::Accepted {
675 user_id: contact_user_id,
676 ..
677 } = contact
678 {
679 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
680 self.peer
681 .send(
682 contact_conn_id,
683 proto::UpdateContacts {
684 contacts: vec![updated_contact.clone()],
685 remove_contacts: Default::default(),
686 incoming_requests: Default::default(),
687 remove_incoming_requests: Default::default(),
688 outgoing_requests: Default::default(),
689 remove_outgoing_requests: Default::default(),
690 },
691 )
692 .trace_err();
693 }
694 }
695 }
696 Ok(())
697 }
698
699 async fn join_project(
700 self: Arc<Server>,
701 request: TypedEnvelope<proto::JoinProject>,
702 response: Response<proto::JoinProject>,
703 ) -> Result<()> {
704 let project_id = ProjectId::from_proto(request.payload.project_id);
705
706 let host_user_id;
707 let guest_user_id;
708 let host_connection_id;
709 {
710 let state = self.store().await;
711 let project = state.project(project_id)?;
712 host_user_id = project.host.user_id;
713 host_connection_id = project.host_connection_id;
714 guest_user_id = state.user_id_for_connection(request.sender_id)?;
715 };
716
717 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
718 let has_contact = self
719 .app_state
720 .db
721 .has_contact(guest_user_id, host_user_id)
722 .await?;
723 if !has_contact {
724 return Err(anyhow!("no such project"))?;
725 }
726
727 self.store().await.request_join_project(
728 guest_user_id,
729 project_id,
730 response.into_receipt(),
731 )?;
732 self.peer.send(
733 host_connection_id,
734 proto::RequestJoinProject {
735 project_id: project_id.to_proto(),
736 requester_id: guest_user_id.to_proto(),
737 },
738 )?;
739 Ok(())
740 }
741
742 async fn respond_to_join_project_request(
743 self: Arc<Server>,
744 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
745 ) -> Result<()> {
746 let host_user_id;
747
748 {
749 let mut state = self.store().await;
750 let project_id = ProjectId::from_proto(request.payload.project_id);
751 let project = state.project(project_id)?;
752 if project.host_connection_id != request.sender_id {
753 Err(anyhow!("no such connection"))?;
754 }
755
756 host_user_id = project.host.user_id;
757 let guest_user_id = UserId::from_proto(request.payload.requester_id);
758
759 if !request.payload.allow {
760 let receipts = state
761 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
762 .ok_or_else(|| anyhow!("no such request"))?;
763 for receipt in receipts {
764 self.peer.respond(
765 receipt,
766 proto::JoinProjectResponse {
767 variant: Some(proto::join_project_response::Variant::Decline(
768 proto::join_project_response::Decline {
769 reason: proto::join_project_response::decline::Reason::Declined
770 as i32,
771 },
772 )),
773 },
774 )?;
775 }
776 return Ok(());
777 }
778
779 let (receipts_with_replica_ids, project) = state
780 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
781 .ok_or_else(|| anyhow!("no such request"))?;
782
783 let peer_count = project.guests.len();
784 let mut collaborators = Vec::with_capacity(peer_count);
785 collaborators.push(proto::Collaborator {
786 peer_id: project.host_connection_id.0,
787 replica_id: 0,
788 user_id: project.host.user_id.to_proto(),
789 });
790 let worktrees = project
791 .worktrees
792 .iter()
793 .map(|(id, worktree)| proto::WorktreeMetadata {
794 id: *id,
795 root_name: worktree.root_name.clone(),
796 visible: worktree.visible,
797 })
798 .collect::<Vec<_>>();
799
800 // Add all guests other than the requesting user's own connections as collaborators
801 for (guest_conn_id, guest) in &project.guests {
802 if receipts_with_replica_ids
803 .iter()
804 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
805 {
806 collaborators.push(proto::Collaborator {
807 peer_id: guest_conn_id.0,
808 replica_id: guest.replica_id as u32,
809 user_id: guest.user_id.to_proto(),
810 });
811 }
812 }
813
814 for conn_id in project.connection_ids() {
815 for (receipt, replica_id) in &receipts_with_replica_ids {
816 if conn_id != receipt.sender_id {
817 self.peer.send(
818 conn_id,
819 proto::AddProjectCollaborator {
820 project_id: project_id.to_proto(),
821 collaborator: Some(proto::Collaborator {
822 peer_id: receipt.sender_id.0,
823 replica_id: *replica_id as u32,
824 user_id: guest_user_id.to_proto(),
825 }),
826 },
827 )?;
828 }
829 }
830 }
831
832 // First, we send the metadata associated with each worktree.
833 for (receipt, replica_id) in &receipts_with_replica_ids {
834 self.peer.respond(
835 receipt.clone(),
836 proto::JoinProjectResponse {
837 variant: Some(proto::join_project_response::Variant::Accept(
838 proto::join_project_response::Accept {
839 worktrees: worktrees.clone(),
840 replica_id: *replica_id as u32,
841 collaborators: collaborators.clone(),
842 language_servers: project.language_servers.clone(),
843 },
844 )),
845 },
846 )?;
847 }
848
849 for (worktree_id, worktree) in &project.worktrees {
850 #[cfg(any(test, feature = "test-support"))]
851 const MAX_CHUNK_SIZE: usize = 2;
852 #[cfg(not(any(test, feature = "test-support")))]
853 const MAX_CHUNK_SIZE: usize = 256;
854
855 // Stream this worktree's entries.
856 let message = proto::UpdateWorktree {
857 project_id: project_id.to_proto(),
858 worktree_id: *worktree_id,
859 root_name: worktree.root_name.clone(),
860 updated_entries: worktree.entries.values().cloned().collect(),
861 removed_entries: Default::default(),
862 scan_id: worktree.scan_id,
863 is_last_update: worktree.is_complete,
864 };
865 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
866 for (receipt, _) in &receipts_with_replica_ids {
867 self.peer.send(receipt.sender_id, update.clone())?;
868 }
869 }
870
871 // Stream this worktree's diagnostics.
872 for summary in worktree.diagnostic_summaries.values() {
873 for (receipt, _) in &receipts_with_replica_ids {
874 self.peer.send(
875 receipt.sender_id,
876 proto::UpdateDiagnosticSummary {
877 project_id: project_id.to_proto(),
878 worktree_id: *worktree_id,
879 summary: Some(summary.clone()),
880 },
881 )?;
882 }
883 }
884 }
885 }
886
887 self.update_user_contacts(host_user_id).await?;
888 Ok(())
889 }
890
891 async fn leave_project(
892 self: Arc<Server>,
893 request: TypedEnvelope<proto::LeaveProject>,
894 ) -> Result<()> {
895 let sender_id = request.sender_id;
896 let project_id = ProjectId::from_proto(request.payload.project_id);
897 let project;
898 {
899 let mut store = self.store().await;
900 project = store.leave_project(sender_id, project_id)?;
901 tracing::info!(
902 %project_id,
903 host_user_id = %project.host_user_id,
904 host_connection_id = %project.host_connection_id,
905 "leave project"
906 );
907
908 if project.remove_collaborator {
909 broadcast(sender_id, project.connection_ids, |conn_id| {
910 self.peer.send(
911 conn_id,
912 proto::RemoveProjectCollaborator {
913 project_id: project_id.to_proto(),
914 peer_id: sender_id.0,
915 },
916 )
917 });
918 }
919
920 if let Some(requester_id) = project.cancel_request {
921 self.peer.send(
922 project.host_connection_id,
923 proto::JoinProjectRequestCancelled {
924 project_id: project_id.to_proto(),
925 requester_id: requester_id.to_proto(),
926 },
927 )?;
928 }
929
930 if project.unshare {
931 self.peer.send(
932 project.host_connection_id,
933 proto::ProjectUnshared {
934 project_id: project_id.to_proto(),
935 },
936 )?;
937 }
938 }
939 self.update_user_contacts(project.host_user_id).await?;
940 Ok(())
941 }
942
943 async fn update_project(
944 self: Arc<Server>,
945 request: TypedEnvelope<proto::UpdateProject>,
946 ) -> Result<()> {
947 let project_id = ProjectId::from_proto(request.payload.project_id);
948 let user_id;
949 {
950 let mut state = self.store().await;
951 user_id = state.user_id_for_connection(request.sender_id)?;
952 let guest_connection_ids = state
953 .read_project(project_id, request.sender_id)?
954 .guest_connection_ids();
955 let unshared_project = state.update_project(
956 project_id,
957 &request.payload.worktrees,
958 request.payload.online,
959 request.sender_id,
960 )?;
961
962 if let Some(unshared_project) = unshared_project {
963 broadcast(
964 request.sender_id,
965 unshared_project.guests.keys().copied(),
966 |conn_id| {
967 self.peer.send(
968 conn_id,
969 proto::UnregisterProject {
970 project_id: project_id.to_proto(),
971 },
972 )
973 },
974 );
975 for (_, receipts) in unshared_project.pending_join_requests {
976 for receipt in receipts {
977 self.peer.respond(
978 receipt,
979 proto::JoinProjectResponse {
980 variant: Some(proto::join_project_response::Variant::Decline(
981 proto::join_project_response::Decline {
982 reason:
983 proto::join_project_response::decline::Reason::Closed
984 as i32,
985 },
986 )),
987 },
988 )?;
989 }
990 }
991 } else {
992 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
993 self.peer.forward_send(
994 request.sender_id,
995 connection_id,
996 request.payload.clone(),
997 )
998 });
999 }
1000 };
1001
1002 self.update_user_contacts(user_id).await?;
1003 Ok(())
1004 }
1005
1006 async fn register_project_activity(
1007 self: Arc<Server>,
1008 request: TypedEnvelope<proto::RegisterProjectActivity>,
1009 ) -> Result<()> {
1010 self.store().await.register_project_activity(
1011 ProjectId::from_proto(request.payload.project_id),
1012 request.sender_id,
1013 )?;
1014 Ok(())
1015 }
1016
1017 async fn update_worktree(
1018 self: Arc<Server>,
1019 request: TypedEnvelope<proto::UpdateWorktree>,
1020 response: Response<proto::UpdateWorktree>,
1021 ) -> Result<()> {
1022 let project_id = ProjectId::from_proto(request.payload.project_id);
1023 let worktree_id = request.payload.worktree_id;
1024 let (connection_ids, metadata_changed) = {
1025 let mut store = self.store().await;
1026 let (connection_ids, metadata_changed) = store.update_worktree(
1027 request.sender_id,
1028 project_id,
1029 worktree_id,
1030 &request.payload.root_name,
1031 &request.payload.removed_entries,
1032 &request.payload.updated_entries,
1033 request.payload.scan_id,
1034 request.payload.is_last_update,
1035 )?;
1036 (connection_ids, metadata_changed)
1037 };
1038
1039 broadcast(request.sender_id, connection_ids, |connection_id| {
1040 self.peer
1041 .forward_send(request.sender_id, connection_id, request.payload.clone())
1042 });
1043 if metadata_changed {
1044 let user_id = self
1045 .store()
1046 .await
1047 .user_id_for_connection(request.sender_id)?;
1048 self.update_user_contacts(user_id).await?;
1049 }
1050 response.send(proto::Ack {})?;
1051 Ok(())
1052 }
1053
1054 async fn update_worktree_extensions(
1055 self: Arc<Server>,
1056 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1057 ) -> Result<()> {
1058 let project_id = ProjectId::from_proto(request.payload.project_id);
1059 let worktree_id = request.payload.worktree_id;
1060 let extensions = request
1061 .payload
1062 .extensions
1063 .into_iter()
1064 .zip(request.payload.counts)
1065 .collect();
1066 self.app_state
1067 .db
1068 .update_worktree_extensions(project_id, worktree_id, extensions)
1069 .await?;
1070 Ok(())
1071 }
1072
1073 async fn update_diagnostic_summary(
1074 self: Arc<Server>,
1075 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1076 ) -> Result<()> {
1077 let summary = request
1078 .payload
1079 .summary
1080 .clone()
1081 .ok_or_else(|| anyhow!("invalid summary"))?;
1082 let receiver_ids = self.store().await.update_diagnostic_summary(
1083 ProjectId::from_proto(request.payload.project_id),
1084 request.payload.worktree_id,
1085 request.sender_id,
1086 summary,
1087 )?;
1088
1089 broadcast(request.sender_id, receiver_ids, |connection_id| {
1090 self.peer
1091 .forward_send(request.sender_id, connection_id, request.payload.clone())
1092 });
1093 Ok(())
1094 }
1095
1096 async fn start_language_server(
1097 self: Arc<Server>,
1098 request: TypedEnvelope<proto::StartLanguageServer>,
1099 ) -> Result<()> {
1100 let receiver_ids = self.store().await.start_language_server(
1101 ProjectId::from_proto(request.payload.project_id),
1102 request.sender_id,
1103 request
1104 .payload
1105 .server
1106 .clone()
1107 .ok_or_else(|| anyhow!("invalid language server"))?,
1108 )?;
1109 broadcast(request.sender_id, receiver_ids, |connection_id| {
1110 self.peer
1111 .forward_send(request.sender_id, connection_id, request.payload.clone())
1112 });
1113 Ok(())
1114 }
1115
1116 async fn update_language_server(
1117 self: Arc<Server>,
1118 request: TypedEnvelope<proto::UpdateLanguageServer>,
1119 ) -> Result<()> {
1120 let receiver_ids = self.store().await.project_connection_ids(
1121 ProjectId::from_proto(request.payload.project_id),
1122 request.sender_id,
1123 )?;
1124 broadcast(request.sender_id, receiver_ids, |connection_id| {
1125 self.peer
1126 .forward_send(request.sender_id, connection_id, request.payload.clone())
1127 });
1128 Ok(())
1129 }
1130
1131 async fn forward_project_request<T>(
1132 self: Arc<Server>,
1133 request: TypedEnvelope<T>,
1134 response: Response<T>,
1135 ) -> Result<()>
1136 where
1137 T: EntityMessage + RequestMessage,
1138 {
1139 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1140 let host_connection_id = self
1141 .store()
1142 .await
1143 .read_project(project_id, request.sender_id)?
1144 .host_connection_id;
1145 let payload = self
1146 .peer
1147 .forward_request(request.sender_id, host_connection_id, request.payload)
1148 .await?;
1149
1150 // Ensure project still exists by the time we get the response from the host.
1151 self.store()
1152 .await
1153 .read_project(project_id, request.sender_id)?;
1154
1155 response.send(payload)?;
1156 Ok(())
1157 }
1158
1159 async fn save_buffer(
1160 self: Arc<Server>,
1161 request: TypedEnvelope<proto::SaveBuffer>,
1162 response: Response<proto::SaveBuffer>,
1163 ) -> Result<()> {
1164 let project_id = ProjectId::from_proto(request.payload.project_id);
1165 let host = self
1166 .store()
1167 .await
1168 .read_project(project_id, request.sender_id)?
1169 .host_connection_id;
1170 let response_payload = self
1171 .peer
1172 .forward_request(request.sender_id, host, request.payload.clone())
1173 .await?;
1174
1175 let mut guests = self
1176 .store()
1177 .await
1178 .read_project(project_id, request.sender_id)?
1179 .connection_ids();
1180 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1181 broadcast(host, guests, |conn_id| {
1182 self.peer
1183 .forward_send(host, conn_id, response_payload.clone())
1184 });
1185 response.send(response_payload)?;
1186 Ok(())
1187 }
1188
1189 async fn update_buffer(
1190 self: Arc<Server>,
1191 request: TypedEnvelope<proto::UpdateBuffer>,
1192 response: Response<proto::UpdateBuffer>,
1193 ) -> Result<()> {
1194 let project_id = ProjectId::from_proto(request.payload.project_id);
1195 let receiver_ids = {
1196 let mut store = self.store().await;
1197 store.register_project_activity(project_id, request.sender_id)?;
1198 store.project_connection_ids(project_id, request.sender_id)?
1199 };
1200
1201 broadcast(request.sender_id, receiver_ids, |connection_id| {
1202 self.peer
1203 .forward_send(request.sender_id, connection_id, request.payload.clone())
1204 });
1205 response.send(proto::Ack {})?;
1206 Ok(())
1207 }
1208
1209 async fn update_buffer_file(
1210 self: Arc<Server>,
1211 request: TypedEnvelope<proto::UpdateBufferFile>,
1212 ) -> Result<()> {
1213 let receiver_ids = self.store().await.project_connection_ids(
1214 ProjectId::from_proto(request.payload.project_id),
1215 request.sender_id,
1216 )?;
1217 broadcast(request.sender_id, receiver_ids, |connection_id| {
1218 self.peer
1219 .forward_send(request.sender_id, connection_id, request.payload.clone())
1220 });
1221 Ok(())
1222 }
1223
1224 async fn buffer_reloaded(
1225 self: Arc<Server>,
1226 request: TypedEnvelope<proto::BufferReloaded>,
1227 ) -> Result<()> {
1228 let receiver_ids = self.store().await.project_connection_ids(
1229 ProjectId::from_proto(request.payload.project_id),
1230 request.sender_id,
1231 )?;
1232 broadcast(request.sender_id, receiver_ids, |connection_id| {
1233 self.peer
1234 .forward_send(request.sender_id, connection_id, request.payload.clone())
1235 });
1236 Ok(())
1237 }
1238
1239 async fn buffer_saved(
1240 self: Arc<Server>,
1241 request: TypedEnvelope<proto::BufferSaved>,
1242 ) -> Result<()> {
1243 let receiver_ids = self.store().await.project_connection_ids(
1244 ProjectId::from_proto(request.payload.project_id),
1245 request.sender_id,
1246 )?;
1247 broadcast(request.sender_id, receiver_ids, |connection_id| {
1248 self.peer
1249 .forward_send(request.sender_id, connection_id, request.payload.clone())
1250 });
1251 Ok(())
1252 }
1253
1254 async fn follow(
1255 self: Arc<Self>,
1256 request: TypedEnvelope<proto::Follow>,
1257 response: Response<proto::Follow>,
1258 ) -> Result<()> {
1259 let project_id = ProjectId::from_proto(request.payload.project_id);
1260 let leader_id = ConnectionId(request.payload.leader_id);
1261 let follower_id = request.sender_id;
1262 {
1263 let mut store = self.store().await;
1264 if !store
1265 .project_connection_ids(project_id, follower_id)?
1266 .contains(&leader_id)
1267 {
1268 Err(anyhow!("no such peer"))?;
1269 }
1270
1271 store.register_project_activity(project_id, follower_id)?;
1272 }
1273
1274 let mut response_payload = self
1275 .peer
1276 .forward_request(request.sender_id, leader_id, request.payload)
1277 .await?;
1278 response_payload
1279 .views
1280 .retain(|view| view.leader_id != Some(follower_id.0));
1281 response.send(response_payload)?;
1282 Ok(())
1283 }
1284
1285 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1286 let project_id = ProjectId::from_proto(request.payload.project_id);
1287 let leader_id = ConnectionId(request.payload.leader_id);
1288 let mut store = self.store().await;
1289 if !store
1290 .project_connection_ids(project_id, request.sender_id)?
1291 .contains(&leader_id)
1292 {
1293 Err(anyhow!("no such peer"))?;
1294 }
1295 store.register_project_activity(project_id, request.sender_id)?;
1296 self.peer
1297 .forward_send(request.sender_id, leader_id, request.payload)?;
1298 Ok(())
1299 }
1300
1301 async fn update_followers(
1302 self: Arc<Self>,
1303 request: TypedEnvelope<proto::UpdateFollowers>,
1304 ) -> Result<()> {
1305 let project_id = ProjectId::from_proto(request.payload.project_id);
1306 let mut store = self.store().await;
1307 store.register_project_activity(project_id, request.sender_id)?;
1308 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1309 let leader_id = request
1310 .payload
1311 .variant
1312 .as_ref()
1313 .and_then(|variant| match variant {
1314 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1315 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1316 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1317 });
1318 for follower_id in &request.payload.follower_ids {
1319 let follower_id = ConnectionId(*follower_id);
1320 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1321 self.peer
1322 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1323 }
1324 }
1325 Ok(())
1326 }
1327
1328 async fn get_channels(
1329 self: Arc<Server>,
1330 request: TypedEnvelope<proto::GetChannels>,
1331 response: Response<proto::GetChannels>,
1332 ) -> Result<()> {
1333 let user_id = self
1334 .store()
1335 .await
1336 .user_id_for_connection(request.sender_id)?;
1337 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1338 response.send(proto::GetChannelsResponse {
1339 channels: channels
1340 .into_iter()
1341 .map(|chan| proto::Channel {
1342 id: chan.id.to_proto(),
1343 name: chan.name,
1344 })
1345 .collect(),
1346 })?;
1347 Ok(())
1348 }
1349
1350 async fn get_users(
1351 self: Arc<Server>,
1352 request: TypedEnvelope<proto::GetUsers>,
1353 response: Response<proto::GetUsers>,
1354 ) -> Result<()> {
1355 let user_ids = request
1356 .payload
1357 .user_ids
1358 .into_iter()
1359 .map(UserId::from_proto)
1360 .collect();
1361 let users = self
1362 .app_state
1363 .db
1364 .get_users_by_ids(user_ids)
1365 .await?
1366 .into_iter()
1367 .map(|user| proto::User {
1368 id: user.id.to_proto(),
1369 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1370 github_login: user.github_login,
1371 })
1372 .collect();
1373 response.send(proto::UsersResponse { users })?;
1374 Ok(())
1375 }
1376
1377 async fn fuzzy_search_users(
1378 self: Arc<Server>,
1379 request: TypedEnvelope<proto::FuzzySearchUsers>,
1380 response: Response<proto::FuzzySearchUsers>,
1381 ) -> Result<()> {
1382 let user_id = self
1383 .store()
1384 .await
1385 .user_id_for_connection(request.sender_id)?;
1386 let query = request.payload.query;
1387 let db = &self.app_state.db;
1388 let users = match query.len() {
1389 0 => vec![],
1390 1 | 2 => db
1391 .get_user_by_github_login(&query)
1392 .await?
1393 .into_iter()
1394 .collect(),
1395 _ => db.fuzzy_search_users(&query, 10).await?,
1396 };
1397 let users = users
1398 .into_iter()
1399 .filter(|user| user.id != user_id)
1400 .map(|user| proto::User {
1401 id: user.id.to_proto(),
1402 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1403 github_login: user.github_login,
1404 })
1405 .collect();
1406 response.send(proto::UsersResponse { users })?;
1407 Ok(())
1408 }
1409
1410 async fn request_contact(
1411 self: Arc<Server>,
1412 request: TypedEnvelope<proto::RequestContact>,
1413 response: Response<proto::RequestContact>,
1414 ) -> Result<()> {
1415 let requester_id = self
1416 .store()
1417 .await
1418 .user_id_for_connection(request.sender_id)?;
1419 let responder_id = UserId::from_proto(request.payload.responder_id);
1420 if requester_id == responder_id {
1421 return Err(anyhow!("cannot add yourself as a contact"))?;
1422 }
1423
1424 self.app_state
1425 .db
1426 .send_contact_request(requester_id, responder_id)
1427 .await?;
1428
1429 // Update outgoing contact requests of requester
1430 let mut update = proto::UpdateContacts::default();
1431 update.outgoing_requests.push(responder_id.to_proto());
1432 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1433 self.peer.send(connection_id, update.clone())?;
1434 }
1435
1436 // Update incoming contact requests of responder
1437 let mut update = proto::UpdateContacts::default();
1438 update
1439 .incoming_requests
1440 .push(proto::IncomingContactRequest {
1441 requester_id: requester_id.to_proto(),
1442 should_notify: true,
1443 });
1444 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1445 self.peer.send(connection_id, update.clone())?;
1446 }
1447
1448 response.send(proto::Ack {})?;
1449 Ok(())
1450 }
1451
1452 async fn respond_to_contact_request(
1453 self: Arc<Server>,
1454 request: TypedEnvelope<proto::RespondToContactRequest>,
1455 response: Response<proto::RespondToContactRequest>,
1456 ) -> Result<()> {
1457 let responder_id = self
1458 .store()
1459 .await
1460 .user_id_for_connection(request.sender_id)?;
1461 let requester_id = UserId::from_proto(request.payload.requester_id);
1462 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1463 self.app_state
1464 .db
1465 .dismiss_contact_notification(responder_id, requester_id)
1466 .await?;
1467 } else {
1468 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1469 self.app_state
1470 .db
1471 .respond_to_contact_request(responder_id, requester_id, accept)
1472 .await?;
1473
1474 let store = self.store().await;
1475 // Update responder with new contact
1476 let mut update = proto::UpdateContacts::default();
1477 if accept {
1478 update
1479 .contacts
1480 .push(store.contact_for_user(requester_id, false));
1481 }
1482 update
1483 .remove_incoming_requests
1484 .push(requester_id.to_proto());
1485 for connection_id in store.connection_ids_for_user(responder_id) {
1486 self.peer.send(connection_id, update.clone())?;
1487 }
1488
1489 // Update requester with new contact
1490 let mut update = proto::UpdateContacts::default();
1491 if accept {
1492 update
1493 .contacts
1494 .push(store.contact_for_user(responder_id, true));
1495 }
1496 update
1497 .remove_outgoing_requests
1498 .push(responder_id.to_proto());
1499 for connection_id in store.connection_ids_for_user(requester_id) {
1500 self.peer.send(connection_id, update.clone())?;
1501 }
1502 }
1503
1504 response.send(proto::Ack {})?;
1505 Ok(())
1506 }
1507
1508 async fn remove_contact(
1509 self: Arc<Server>,
1510 request: TypedEnvelope<proto::RemoveContact>,
1511 response: Response<proto::RemoveContact>,
1512 ) -> Result<()> {
1513 let requester_id = self
1514 .store()
1515 .await
1516 .user_id_for_connection(request.sender_id)?;
1517 let responder_id = UserId::from_proto(request.payload.user_id);
1518 self.app_state
1519 .db
1520 .remove_contact(requester_id, responder_id)
1521 .await?;
1522
1523 // Update outgoing contact requests of requester
1524 let mut update = proto::UpdateContacts::default();
1525 update
1526 .remove_outgoing_requests
1527 .push(responder_id.to_proto());
1528 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1529 self.peer.send(connection_id, update.clone())?;
1530 }
1531
1532 // Update incoming contact requests of responder
1533 let mut update = proto::UpdateContacts::default();
1534 update
1535 .remove_incoming_requests
1536 .push(requester_id.to_proto());
1537 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1538 self.peer.send(connection_id, update.clone())?;
1539 }
1540
1541 response.send(proto::Ack {})?;
1542 Ok(())
1543 }
1544
1545 async fn join_channel(
1546 self: Arc<Self>,
1547 request: TypedEnvelope<proto::JoinChannel>,
1548 response: Response<proto::JoinChannel>,
1549 ) -> Result<()> {
1550 let user_id = self
1551 .store()
1552 .await
1553 .user_id_for_connection(request.sender_id)?;
1554 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1555 if !self
1556 .app_state
1557 .db
1558 .can_user_access_channel(user_id, channel_id)
1559 .await?
1560 {
1561 Err(anyhow!("access denied"))?;
1562 }
1563
1564 self.store()
1565 .await
1566 .join_channel(request.sender_id, channel_id);
1567 let messages = self
1568 .app_state
1569 .db
1570 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1571 .await?
1572 .into_iter()
1573 .map(|msg| proto::ChannelMessage {
1574 id: msg.id.to_proto(),
1575 body: msg.body,
1576 timestamp: msg.sent_at.unix_timestamp() as u64,
1577 sender_id: msg.sender_id.to_proto(),
1578 nonce: Some(msg.nonce.as_u128().into()),
1579 })
1580 .collect::<Vec<_>>();
1581 response.send(proto::JoinChannelResponse {
1582 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1583 messages,
1584 })?;
1585 Ok(())
1586 }
1587
1588 async fn leave_channel(
1589 self: Arc<Self>,
1590 request: TypedEnvelope<proto::LeaveChannel>,
1591 ) -> Result<()> {
1592 let user_id = self
1593 .store()
1594 .await
1595 .user_id_for_connection(request.sender_id)?;
1596 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1597 if !self
1598 .app_state
1599 .db
1600 .can_user_access_channel(user_id, channel_id)
1601 .await?
1602 {
1603 Err(anyhow!("access denied"))?;
1604 }
1605
1606 self.store()
1607 .await
1608 .leave_channel(request.sender_id, channel_id);
1609
1610 Ok(())
1611 }
1612
1613 async fn send_channel_message(
1614 self: Arc<Self>,
1615 request: TypedEnvelope<proto::SendChannelMessage>,
1616 response: Response<proto::SendChannelMessage>,
1617 ) -> Result<()> {
1618 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1619 let user_id;
1620 let connection_ids;
1621 {
1622 let state = self.store().await;
1623 user_id = state.user_id_for_connection(request.sender_id)?;
1624 connection_ids = state.channel_connection_ids(channel_id)?;
1625 }
1626
1627 // Validate the message body.
1628 let body = request.payload.body.trim().to_string();
1629 if body.len() > MAX_MESSAGE_LEN {
1630 return Err(anyhow!("message is too long"))?;
1631 }
1632 if body.is_empty() {
1633 return Err(anyhow!("message can't be blank"))?;
1634 }
1635
1636 let timestamp = OffsetDateTime::now_utc();
1637 let nonce = request
1638 .payload
1639 .nonce
1640 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1641
1642 let message_id = self
1643 .app_state
1644 .db
1645 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1646 .await?
1647 .to_proto();
1648 let message = proto::ChannelMessage {
1649 sender_id: user_id.to_proto(),
1650 id: message_id,
1651 body,
1652 timestamp: timestamp.unix_timestamp() as u64,
1653 nonce: Some(nonce),
1654 };
1655 broadcast(request.sender_id, connection_ids, |conn_id| {
1656 self.peer.send(
1657 conn_id,
1658 proto::ChannelMessageSent {
1659 channel_id: channel_id.to_proto(),
1660 message: Some(message.clone()),
1661 },
1662 )
1663 });
1664 response.send(proto::SendChannelMessageResponse {
1665 message: Some(message),
1666 })?;
1667 Ok(())
1668 }
1669
1670 async fn get_channel_messages(
1671 self: Arc<Self>,
1672 request: TypedEnvelope<proto::GetChannelMessages>,
1673 response: Response<proto::GetChannelMessages>,
1674 ) -> Result<()> {
1675 let user_id = self
1676 .store()
1677 .await
1678 .user_id_for_connection(request.sender_id)?;
1679 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1680 if !self
1681 .app_state
1682 .db
1683 .can_user_access_channel(user_id, channel_id)
1684 .await?
1685 {
1686 Err(anyhow!("access denied"))?;
1687 }
1688
1689 let messages = self
1690 .app_state
1691 .db
1692 .get_channel_messages(
1693 channel_id,
1694 MESSAGE_COUNT_PER_PAGE,
1695 Some(MessageId::from_proto(request.payload.before_message_id)),
1696 )
1697 .await?
1698 .into_iter()
1699 .map(|msg| proto::ChannelMessage {
1700 id: msg.id.to_proto(),
1701 body: msg.body,
1702 timestamp: msg.sent_at.unix_timestamp() as u64,
1703 sender_id: msg.sender_id.to_proto(),
1704 nonce: Some(msg.nonce.as_u128().into()),
1705 })
1706 .collect::<Vec<_>>();
1707 response.send(proto::GetChannelMessagesResponse {
1708 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1709 messages,
1710 })?;
1711 Ok(())
1712 }
1713
1714 pub(crate) async fn store<'a>(&'a self) -> StoreGuard<'a> {
1715 #[cfg(test)]
1716 tokio::task::yield_now().await;
1717 let guard = self.store.lock().await;
1718 #[cfg(test)]
1719 tokio::task::yield_now().await;
1720 StoreGuard {
1721 guard,
1722 _not_send: PhantomData,
1723 }
1724 }
1725
1726 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1727 ServerSnapshot {
1728 store: self.store().await,
1729 peer: &self.peer,
1730 }
1731 }
1732}
1733
1734impl<'a> Deref for StoreGuard<'a> {
1735 type Target = Store;
1736
1737 fn deref(&self) -> &Self::Target {
1738 &*self.guard
1739 }
1740}
1741
1742impl<'a> DerefMut for StoreGuard<'a> {
1743 fn deref_mut(&mut self) -> &mut Self::Target {
1744 &mut *self.guard
1745 }
1746}
1747
1748impl<'a> Drop for StoreGuard<'a> {
1749 fn drop(&mut self) {
1750 #[cfg(test)]
1751 self.check_invariants();
1752 }
1753}
1754
1755impl Executor for RealExecutor {
1756 type Sleep = Sleep;
1757
1758 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1759 tokio::task::spawn(future);
1760 }
1761
1762 fn sleep(&self, duration: Duration) -> Self::Sleep {
1763 tokio::time::sleep(duration)
1764 }
1765}
1766
1767fn broadcast<F>(
1768 sender_id: ConnectionId,
1769 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1770 mut f: F,
1771) where
1772 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1773{
1774 for receiver_id in receiver_ids {
1775 if receiver_id != sender_id {
1776 f(receiver_id).trace_err();
1777 }
1778 }
1779}
1780
1781lazy_static! {
1782 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1783}
1784
1785pub struct ProtocolVersion(u32);
1786
1787impl Header for ProtocolVersion {
1788 fn name() -> &'static HeaderName {
1789 &ZED_PROTOCOL_VERSION
1790 }
1791
1792 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1793 where
1794 Self: Sized,
1795 I: Iterator<Item = &'i axum::http::HeaderValue>,
1796 {
1797 let version = values
1798 .next()
1799 .ok_or_else(|| axum::headers::Error::invalid())?
1800 .to_str()
1801 .map_err(|_| axum::headers::Error::invalid())?
1802 .parse()
1803 .map_err(|_| axum::headers::Error::invalid())?;
1804 Ok(Self(version))
1805 }
1806
1807 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1808 values.extend([self.0.to_string().parse().unwrap()]);
1809 }
1810}
1811
1812pub fn routes(server: Arc<Server>) -> Router<Body> {
1813 Router::new()
1814 .route("/rpc", get(handle_websocket_request))
1815 .layer(
1816 ServiceBuilder::new()
1817 .layer(Extension(server.app_state.clone()))
1818 .layer(middleware::from_fn(auth::validate_header)),
1819 )
1820 .route("/metrics", get(handle_metrics))
1821 .layer(Extension(server))
1822}
1823
1824pub async fn handle_websocket_request(
1825 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1826 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1827 Extension(server): Extension<Arc<Server>>,
1828 Extension(user): Extension<User>,
1829 ws: WebSocketUpgrade,
1830) -> axum::response::Response {
1831 if protocol_version != rpc::PROTOCOL_VERSION {
1832 return (
1833 StatusCode::UPGRADE_REQUIRED,
1834 "client must be upgraded".to_string(),
1835 )
1836 .into_response();
1837 }
1838 let socket_address = socket_address.to_string();
1839 ws.on_upgrade(move |socket| {
1840 use util::ResultExt;
1841 let socket = socket
1842 .map_ok(to_tungstenite_message)
1843 .err_into()
1844 .with(|message| async move { Ok(to_axum_message(message)) });
1845 let connection = Connection::new(Box::pin(socket));
1846 async move {
1847 server
1848 .handle_connection(connection, socket_address, user, None, RealExecutor)
1849 .await
1850 .log_err();
1851 }
1852 })
1853}
1854
1855pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1856 // We call `store_mut` here for its side effects of updating metrics.
1857 let metrics = server.store().await.metrics();
1858 METRIC_CONNECTIONS.set(metrics.connections as _);
1859 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1860 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1861 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1862
1863 let encoder = prometheus::TextEncoder::new();
1864 let metric_families = prometheus::gather();
1865 match encoder.encode_to_string(&metric_families) {
1866 Ok(string) => (StatusCode::OK, string).into_response(),
1867 Err(error) => (
1868 StatusCode::INTERNAL_SERVER_ERROR,
1869 format!("failed to encode metrics {:?}", error),
1870 )
1871 .into_response(),
1872 }
1873}
1874
1875fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1876 match message {
1877 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1878 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1879 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1880 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1881 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1882 code: frame.code.into(),
1883 reason: frame.reason,
1884 })),
1885 }
1886}
1887
1888fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1889 match message {
1890 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1891 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1892 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1893 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1894 AxumMessage::Close(frame) => {
1895 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1896 code: frame.code.into(),
1897 reason: frame.reason,
1898 }))
1899 }
1900 }
1901}
1902
1903pub trait ResultExt {
1904 type Ok;
1905
1906 fn trace_err(self) -> Option<Self::Ok>;
1907}
1908
1909impl<T, E> ResultExt for Result<T, E>
1910where
1911 E: std::fmt::Debug,
1912{
1913 type Ok = T;
1914
1915 fn trace_err(self) -> Option<T> {
1916 match self {
1917 Ok(value) => Some(value),
1918 Err(error) => {
1919 tracing::error!("{:?}", error);
1920 None
1921 }
1922 }
1923 }
1924}