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