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 FutureExt, SinkExt, StreamExt, TryStreamExt,
30};
31use lazy_static::lazy_static;
32use prometheus::{register_int_gauge, IntGauge};
33use rpc::{
34 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
35 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
36};
37use serde::{Serialize, Serializer};
38use std::{
39 any::TypeId,
40 future::Future,
41 marker::PhantomData,
42 net::SocketAddr,
43 ops::{Deref, DerefMut},
44 rc::Rc,
45 sync::{
46 atomic::{AtomicBool, Ordering::SeqCst},
47 Arc,
48 },
49 time::Duration,
50};
51use time::OffsetDateTime;
52use tokio::{
53 sync::{RwLock, RwLockReadGuard, RwLockWriteGuard},
54 time::Sleep,
55};
56use tower::ServiceBuilder;
57use tracing::{info_span, instrument, Instrument};
58
59pub use store::{Store, Worktree};
60
61lazy_static! {
62 static ref METRIC_CONNECTIONS: IntGauge =
63 register_int_gauge!("connections", "number of connections").unwrap();
64 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
65 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
66 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
67 register_int_gauge!("active_projects", "number of active projects").unwrap();
68 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
69 "shared_projects",
70 "number of open projects with one or more guests"
71 )
72 .unwrap();
73}
74
75type MessageHandler =
76 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
77
78struct Response<R> {
79 server: Arc<Server>,
80 receipt: Receipt<R>,
81 responded: Arc<AtomicBool>,
82}
83
84impl<R: RequestMessage> Response<R> {
85 fn send(self, payload: R::Response) -> Result<()> {
86 self.responded.store(true, SeqCst);
87 self.server.peer.respond(self.receipt, payload)?;
88 Ok(())
89 }
90
91 fn into_receipt(self) -> Receipt<R> {
92 self.responded.store(true, SeqCst);
93 self.receipt
94 }
95}
96
97pub struct Server {
98 peer: Arc<Peer>,
99 pub(crate) store: RwLock<Store>,
100 app_state: Arc<AppState>,
101 handlers: HashMap<TypeId, MessageHandler>,
102 notifications: Option<mpsc::UnboundedSender<()>>,
103}
104
105pub trait Executor: Send + Clone {
106 type Sleep: Send + Future;
107 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
108 fn sleep(&self, duration: Duration) -> Self::Sleep;
109}
110
111#[derive(Clone)]
112pub struct RealExecutor;
113
114const MESSAGE_COUNT_PER_PAGE: usize = 100;
115const MAX_MESSAGE_LEN: usize = 1024;
116
117struct StoreReadGuard<'a> {
118 guard: RwLockReadGuard<'a, Store>,
119 _not_send: PhantomData<Rc<()>>,
120}
121
122struct StoreWriteGuard<'a> {
123 guard: RwLockWriteGuard<'a, Store>,
124 _not_send: PhantomData<Rc<()>>,
125}
126
127#[derive(Serialize)]
128pub struct ServerSnapshot<'a> {
129 peer: &'a Peer,
130 #[serde(serialize_with = "serialize_deref")]
131 store: RwLockReadGuard<'a, Store>,
132}
133
134pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
135where
136 S: Serializer,
137 T: Deref<Target = U>,
138 U: Serialize,
139{
140 Serialize::serialize(value.deref(), serializer)
141}
142
143impl Server {
144 pub fn new(
145 app_state: Arc<AppState>,
146 notifications: Option<mpsc::UnboundedSender<()>>,
147 ) -> Arc<Self> {
148 let mut server = Self {
149 peer: Peer::new(),
150 app_state,
151 store: Default::default(),
152 handlers: Default::default(),
153 notifications,
154 };
155
156 server
157 .add_request_handler(Server::ping)
158 .add_request_handler(Server::register_project)
159 .add_request_handler(Server::unregister_project)
160 .add_request_handler(Server::join_project)
161 .add_message_handler(Server::leave_project)
162 .add_message_handler(Server::respond_to_join_project_request)
163 .add_message_handler(Server::update_project)
164 .add_message_handler(Server::register_project_activity)
165 .add_request_handler(Server::update_worktree)
166 .add_message_handler(Server::start_language_server)
167 .add_message_handler(Server::update_language_server)
168 .add_message_handler(Server::update_diagnostic_summary)
169 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
170 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
171 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
172 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
173 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
174 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
176 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
177 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
178 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
179 .add_request_handler(
180 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
181 )
182 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
183 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
184 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
185 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
186 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
187 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
188 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
190 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
191 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
192 .add_request_handler(Server::update_buffer)
193 .add_message_handler(Server::update_buffer_file)
194 .add_message_handler(Server::buffer_reloaded)
195 .add_message_handler(Server::buffer_saved)
196 .add_request_handler(Server::save_buffer)
197 .add_request_handler(Server::get_channels)
198 .add_request_handler(Server::get_users)
199 .add_request_handler(Server::fuzzy_search_users)
200 .add_request_handler(Server::request_contact)
201 .add_request_handler(Server::remove_contact)
202 .add_request_handler(Server::respond_to_contact_request)
203 .add_request_handler(Server::join_channel)
204 .add_message_handler(Server::leave_channel)
205 .add_request_handler(Server::send_channel_message)
206 .add_request_handler(Server::follow)
207 .add_message_handler(Server::unfollow)
208 .add_message_handler(Server::update_followers)
209 .add_request_handler(Server::get_channel_messages);
210
211 Arc::new(server)
212 }
213
214 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
215 where
216 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
217 Fut: 'static + Send + Future<Output = Result<()>>,
218 M: EnvelopedMessage,
219 {
220 let prev_handler = self.handlers.insert(
221 TypeId::of::<M>(),
222 Box::new(move |server, envelope| {
223 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
224 let span = info_span!(
225 "handle message",
226 payload_type = envelope.payload_type_name()
227 );
228 span.in_scope(|| {
229 tracing::info!(
230 payload = format!("{:?}", envelope.payload).as_str(),
231 "message payload"
232 );
233 });
234 let future = (handler)(server, *envelope);
235 async move {
236 if let Err(error) = future.await {
237 tracing::error!(%error, "error handling message");
238 }
239 }
240 .instrument(span)
241 .boxed()
242 }),
243 );
244 if prev_handler.is_some() {
245 panic!("registered a handler for the same message twice");
246 }
247 self
248 }
249
250 /// Handle a request while holding a lock to the store. This is useful when we're registering
251 /// a connection but we want to respond on the connection before anybody else can send on it.
252 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
253 where
254 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
255 Fut: Send + Future<Output = Result<()>>,
256 M: RequestMessage,
257 {
258 let handler = Arc::new(handler);
259 self.add_message_handler(move |server, envelope| {
260 let receipt = envelope.receipt();
261 let handler = handler.clone();
262 async move {
263 let responded = Arc::new(AtomicBool::default());
264 let response = Response {
265 server: server.clone(),
266 responded: responded.clone(),
267 receipt: envelope.receipt(),
268 };
269 match (handler)(server.clone(), envelope, response).await {
270 Ok(()) => {
271 if responded.load(std::sync::atomic::Ordering::SeqCst) {
272 Ok(())
273 } else {
274 Err(anyhow!("handler did not send a response"))?
275 }
276 }
277 Err(error) => {
278 server.peer.respond_with_error(
279 receipt,
280 proto::Error {
281 message: error.to_string(),
282 },
283 )?;
284 Err(error)
285 }
286 }
287 }
288 })
289 }
290
291 /// Start a long lived task that records which users are active in which projects.
292 pub fn start_recording_project_activity<E: 'static + Executor>(
293 self: &Arc<Self>,
294 interval: Duration,
295 executor: E,
296 ) {
297 executor.spawn_detached({
298 let this = Arc::downgrade(self);
299 let executor = executor.clone();
300 async move {
301 let mut period_start = OffsetDateTime::now_utc();
302 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
303 loop {
304 let sleep = executor.sleep(interval);
305 sleep.await;
306 let this = if let Some(this) = this.upgrade() {
307 this
308 } else {
309 break;
310 };
311
312 active_projects.clear();
313 active_projects.extend(this.store().await.projects().flat_map(
314 |(project_id, project)| {
315 project.guests.values().chain([&project.host]).filter_map(
316 |collaborator| {
317 if collaborator
318 .last_activity
319 .map_or(false, |activity| activity > period_start)
320 {
321 Some((collaborator.user_id, *project_id))
322 } else {
323 None
324 }
325 },
326 )
327 },
328 ));
329
330 let period_end = OffsetDateTime::now_utc();
331 this.app_state
332 .db
333 .record_project_activity(period_start..period_end, &active_projects)
334 .await
335 .trace_err();
336 period_start = period_end;
337 }
338 }
339 });
340 }
341
342 pub fn handle_connection<E: Executor>(
343 self: &Arc<Self>,
344 connection: Connection,
345 address: String,
346 user: User,
347 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
348 executor: E,
349 ) -> impl Future<Output = Result<()>> {
350 let mut this = self.clone();
351 let user_id = user.id;
352 let login = user.github_login;
353 let span = info_span!("handle connection", %user_id, %login, %address);
354 async move {
355 let (connection_id, handle_io, mut incoming_rx) = this
356 .peer
357 .add_connection(connection, {
358 let executor = executor.clone();
359 move |duration| {
360 let timer = executor.sleep(duration);
361 async move {
362 timer.await;
363 }
364 }
365 })
366 .await;
367
368 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
369
370 if let Some(send_connection_id) = send_connection_id.as_mut() {
371 let _ = send_connection_id.send(connection_id).await;
372 }
373
374 if !user.connected_once {
375 this.peer.send(connection_id, proto::ShowContacts {})?;
376 this.app_state.db.set_user_connected_once(user_id, true).await?;
377 }
378
379 let (contacts, invite_code) = future::try_join(
380 this.app_state.db.get_contacts(user_id),
381 this.app_state.db.get_invite_code_for_user(user_id)
382 ).await?;
383
384 {
385 let mut store = this.store_mut().await;
386 store.add_connection(connection_id, user_id, user.admin);
387 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
388
389 if let Some((code, count)) = invite_code {
390 this.peer.send(connection_id, proto::UpdateInviteInfo {
391 url: format!("{}{}", this.app_state.invite_link_prefix, code),
392 count,
393 })?;
394 }
395 }
396 this.update_user_contacts(user_id).await?;
397
398 let handle_io = handle_io.fuse();
399 futures::pin_mut!(handle_io);
400 loop {
401 let next_message = incoming_rx.next().fuse();
402 futures::pin_mut!(next_message);
403 futures::select_biased! {
404 result = handle_io => {
405 if let Err(error) = result {
406 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
407 }
408 break;
409 }
410 message = next_message => {
411 if let Some(message) = message {
412 let type_name = message.payload_type_name();
413 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
414 async {
415 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
416 let notifications = this.notifications.clone();
417 let is_background = message.is_background();
418 let handle_message = (handler)(this.clone(), message);
419 let handle_message = async move {
420 handle_message.await;
421 if let Some(mut notifications) = notifications {
422 let _ = notifications.send(()).await;
423 }
424 };
425 if is_background {
426 executor.spawn_detached(handle_message);
427 } else {
428 handle_message.await;
429 }
430 } else {
431 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
432 }
433 }.instrument(span).await;
434 } else {
435 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
436 break;
437 }
438 }
439 }
440 }
441
442 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
443 if let Err(error) = this.sign_out(connection_id).await {
444 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
445 }
446
447 Ok(())
448 }.instrument(span)
449 }
450
451 #[instrument(skip(self), err)]
452 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
453 self.peer.disconnect(connection_id);
454
455 let removed_user_id = {
456 let mut store = self.store_mut().await;
457 let removed_connection = store.remove_connection(connection_id)?;
458
459 for (project_id, project) in removed_connection.hosted_projects {
460 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
461 self.peer.send(
462 conn_id,
463 proto::UnregisterProject {
464 project_id: project_id.to_proto(),
465 },
466 )
467 });
468
469 for (_, receipts) in project.join_requests {
470 for receipt in receipts {
471 self.peer.respond(
472 receipt,
473 proto::JoinProjectResponse {
474 variant: Some(proto::join_project_response::Variant::Decline(
475 proto::join_project_response::Decline {
476 reason: proto::join_project_response::decline::Reason::WentOffline as i32
477 },
478 )),
479 },
480 )?;
481 }
482 }
483 }
484
485 for project_id in removed_connection.guest_project_ids {
486 if let Some(project) = store.project(project_id).trace_err() {
487 broadcast(connection_id, project.connection_ids(), |conn_id| {
488 self.peer.send(
489 conn_id,
490 proto::RemoveProjectCollaborator {
491 project_id: project_id.to_proto(),
492 peer_id: connection_id.0,
493 },
494 )
495 });
496 if project.guests.is_empty() {
497 self.peer
498 .send(
499 project.host_connection_id,
500 proto::ProjectUnshared {
501 project_id: project_id.to_proto(),
502 },
503 )
504 .trace_err();
505 }
506 }
507 }
508
509 removed_connection.user_id
510 };
511
512 self.update_user_contacts(removed_user_id).await?;
513
514 Ok(())
515 }
516
517 pub async fn invite_code_redeemed(
518 self: &Arc<Self>,
519 code: &str,
520 invitee_id: UserId,
521 ) -> Result<()> {
522 let user = self.app_state.db.get_user_for_invite_code(code).await?;
523 let store = self.store().await;
524 let invitee_contact = store.contact_for_user(invitee_id, true);
525 for connection_id in store.connection_ids_for_user(user.id) {
526 self.peer.send(
527 connection_id,
528 proto::UpdateContacts {
529 contacts: vec![invitee_contact.clone()],
530 ..Default::default()
531 },
532 )?;
533 self.peer.send(
534 connection_id,
535 proto::UpdateInviteInfo {
536 url: format!("{}{}", self.app_state.invite_link_prefix, code),
537 count: user.invite_count as u32,
538 },
539 )?;
540 }
541 Ok(())
542 }
543
544 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
545 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
546 if let Some(invite_code) = &user.invite_code {
547 let store = self.store().await;
548 for connection_id in store.connection_ids_for_user(user_id) {
549 self.peer.send(
550 connection_id,
551 proto::UpdateInviteInfo {
552 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
553 count: user.invite_count as u32,
554 },
555 )?;
556 }
557 }
558 }
559 Ok(())
560 }
561
562 async fn ping(
563 self: Arc<Server>,
564 _: TypedEnvelope<proto::Ping>,
565 response: Response<proto::Ping>,
566 ) -> Result<()> {
567 response.send(proto::Ack {})?;
568 Ok(())
569 }
570
571 async fn register_project(
572 self: Arc<Server>,
573 request: TypedEnvelope<proto::RegisterProject>,
574 response: Response<proto::RegisterProject>,
575 ) -> Result<()> {
576 let user_id = self
577 .store()
578 .await
579 .user_id_for_connection(request.sender_id)?;
580 let project_id = self.app_state.db.register_project(user_id).await?;
581 self.store_mut()
582 .await
583 .register_project(request.sender_id, project_id)?;
584
585 response.send(proto::RegisterProjectResponse {
586 project_id: project_id.to_proto(),
587 })?;
588
589 Ok(())
590 }
591
592 async fn unregister_project(
593 self: Arc<Server>,
594 request: TypedEnvelope<proto::UnregisterProject>,
595 response: Response<proto::UnregisterProject>,
596 ) -> Result<()> {
597 let (user_id, project) = {
598 let mut state = self.store_mut().await;
599 let project = state.unregister_project(
600 ProjectId::from_proto(request.payload.project_id),
601 request.sender_id,
602 )?;
603 (state.user_id_for_connection(request.sender_id)?, project)
604 };
605
606 broadcast(
607 request.sender_id,
608 project.guests.keys().copied(),
609 |conn_id| {
610 self.peer.send(
611 conn_id,
612 proto::UnregisterProject {
613 project_id: request.payload.project_id,
614 },
615 )
616 },
617 );
618 for (_, receipts) in project.join_requests {
619 for receipt in receipts {
620 self.peer.respond(
621 receipt,
622 proto::JoinProjectResponse {
623 variant: Some(proto::join_project_response::Variant::Decline(
624 proto::join_project_response::Decline {
625 reason: proto::join_project_response::decline::Reason::Closed
626 as i32,
627 },
628 )),
629 },
630 )?;
631 }
632 }
633
634 // Send out the `UpdateContacts` message before responding to the unregister
635 // request. This way, when the project's host can keep track of the project's
636 // remote id until after they've received the `UpdateContacts` message for
637 // themself.
638 self.update_user_contacts(user_id).await?;
639 response.send(proto::Ack {})?;
640
641 Ok(())
642 }
643
644 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
645 let contacts = self.app_state.db.get_contacts(user_id).await?;
646 let store = self.store().await;
647 let updated_contact = store.contact_for_user(user_id, false);
648 for contact in contacts {
649 if let db::Contact::Accepted {
650 user_id: contact_user_id,
651 ..
652 } = contact
653 {
654 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
655 self.peer
656 .send(
657 contact_conn_id,
658 proto::UpdateContacts {
659 contacts: vec![updated_contact.clone()],
660 remove_contacts: Default::default(),
661 incoming_requests: Default::default(),
662 remove_incoming_requests: Default::default(),
663 outgoing_requests: Default::default(),
664 remove_outgoing_requests: Default::default(),
665 },
666 )
667 .trace_err();
668 }
669 }
670 }
671 Ok(())
672 }
673
674 async fn join_project(
675 self: Arc<Server>,
676 request: TypedEnvelope<proto::JoinProject>,
677 response: Response<proto::JoinProject>,
678 ) -> Result<()> {
679 let project_id = ProjectId::from_proto(request.payload.project_id);
680
681 let host_user_id;
682 let guest_user_id;
683 let host_connection_id;
684 {
685 let state = self.store().await;
686 let project = state.project(project_id)?;
687 host_user_id = project.host.user_id;
688 host_connection_id = project.host_connection_id;
689 guest_user_id = state.user_id_for_connection(request.sender_id)?;
690 };
691
692 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
693 let has_contact = self
694 .app_state
695 .db
696 .has_contact(guest_user_id, host_user_id)
697 .await?;
698 if !has_contact {
699 return Err(anyhow!("no such project"))?;
700 }
701
702 self.store_mut().await.request_join_project(
703 guest_user_id,
704 project_id,
705 response.into_receipt(),
706 )?;
707 self.peer.send(
708 host_connection_id,
709 proto::RequestJoinProject {
710 project_id: project_id.to_proto(),
711 requester_id: guest_user_id.to_proto(),
712 },
713 )?;
714 Ok(())
715 }
716
717 async fn respond_to_join_project_request(
718 self: Arc<Server>,
719 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
720 ) -> Result<()> {
721 let host_user_id;
722
723 {
724 let mut state = self.store_mut().await;
725 let project_id = ProjectId::from_proto(request.payload.project_id);
726 let project = state.project(project_id)?;
727 if project.host_connection_id != request.sender_id {
728 Err(anyhow!("no such connection"))?;
729 }
730
731 host_user_id = project.host.user_id;
732 let guest_user_id = UserId::from_proto(request.payload.requester_id);
733
734 if !request.payload.allow {
735 let receipts = state
736 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
737 .ok_or_else(|| anyhow!("no such request"))?;
738 for receipt in receipts {
739 self.peer.respond(
740 receipt,
741 proto::JoinProjectResponse {
742 variant: Some(proto::join_project_response::Variant::Decline(
743 proto::join_project_response::Decline {
744 reason: proto::join_project_response::decline::Reason::Declined
745 as i32,
746 },
747 )),
748 },
749 )?;
750 }
751 return Ok(());
752 }
753
754 let (receipts_with_replica_ids, project) = state
755 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
756 .ok_or_else(|| anyhow!("no such request"))?;
757
758 let peer_count = project.guests.len();
759 let mut collaborators = Vec::with_capacity(peer_count);
760 collaborators.push(proto::Collaborator {
761 peer_id: project.host_connection_id.0,
762 replica_id: 0,
763 user_id: project.host.user_id.to_proto(),
764 });
765 let worktrees = project
766 .worktrees
767 .iter()
768 .filter_map(|(id, shared_worktree)| {
769 let worktree = project.worktrees.get(&id)?;
770 Some(proto::Worktree {
771 id: *id,
772 root_name: worktree.root_name.clone(),
773 entries: shared_worktree.entries.values().cloned().collect(),
774 diagnostic_summaries: shared_worktree
775 .diagnostic_summaries
776 .values()
777 .cloned()
778 .collect(),
779 visible: worktree.visible,
780 scan_id: shared_worktree.scan_id,
781 })
782 })
783 .collect::<Vec<_>>();
784
785 // Add all guests other than the requesting user's own connections as collaborators
786 for (guest_conn_id, guest) in &project.guests {
787 if receipts_with_replica_ids
788 .iter()
789 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
790 {
791 collaborators.push(proto::Collaborator {
792 peer_id: guest_conn_id.0,
793 replica_id: guest.replica_id as u32,
794 user_id: guest.user_id.to_proto(),
795 });
796 }
797 }
798
799 for conn_id in project.connection_ids() {
800 for (receipt, replica_id) in &receipts_with_replica_ids {
801 if conn_id != receipt.sender_id {
802 self.peer.send(
803 conn_id,
804 proto::AddProjectCollaborator {
805 project_id: project_id.to_proto(),
806 collaborator: Some(proto::Collaborator {
807 peer_id: receipt.sender_id.0,
808 replica_id: *replica_id as u32,
809 user_id: guest_user_id.to_proto(),
810 }),
811 },
812 )?;
813 }
814 }
815 }
816
817 for (receipt, replica_id) in receipts_with_replica_ids {
818 self.peer.respond(
819 receipt,
820 proto::JoinProjectResponse {
821 variant: Some(proto::join_project_response::Variant::Accept(
822 proto::join_project_response::Accept {
823 worktrees: worktrees.clone(),
824 replica_id: replica_id as u32,
825 collaborators: collaborators.clone(),
826 language_servers: project.language_servers.clone(),
827 },
828 )),
829 },
830 )?;
831 }
832 }
833
834 self.update_user_contacts(host_user_id).await?;
835 Ok(())
836 }
837
838 async fn leave_project(
839 self: Arc<Server>,
840 request: TypedEnvelope<proto::LeaveProject>,
841 ) -> Result<()> {
842 let sender_id = request.sender_id;
843 let project_id = ProjectId::from_proto(request.payload.project_id);
844 let project;
845 {
846 let mut store = self.store_mut().await;
847 project = store.leave_project(sender_id, project_id)?;
848 tracing::info!(
849 %project_id,
850 host_user_id = %project.host_user_id,
851 host_connection_id = %project.host_connection_id,
852 "leave project"
853 );
854
855 if project.remove_collaborator {
856 broadcast(sender_id, project.connection_ids, |conn_id| {
857 self.peer.send(
858 conn_id,
859 proto::RemoveProjectCollaborator {
860 project_id: project_id.to_proto(),
861 peer_id: sender_id.0,
862 },
863 )
864 });
865 }
866
867 if let Some(requester_id) = project.cancel_request {
868 self.peer.send(
869 project.host_connection_id,
870 proto::JoinProjectRequestCancelled {
871 project_id: project_id.to_proto(),
872 requester_id: requester_id.to_proto(),
873 },
874 )?;
875 }
876
877 if project.unshare {
878 self.peer.send(
879 project.host_connection_id,
880 proto::ProjectUnshared {
881 project_id: project_id.to_proto(),
882 },
883 )?;
884 }
885 }
886 self.update_user_contacts(project.host_user_id).await?;
887 Ok(())
888 }
889
890 async fn update_project(
891 self: Arc<Server>,
892 request: TypedEnvelope<proto::UpdateProject>,
893 ) -> Result<()> {
894 let project_id = ProjectId::from_proto(request.payload.project_id);
895 let user_id;
896 {
897 let mut state = self.store_mut().await;
898 user_id = state.user_id_for_connection(request.sender_id)?;
899 let guest_connection_ids = state
900 .read_project(project_id, request.sender_id)?
901 .guest_connection_ids();
902 state.update_project(project_id, &request.payload.worktrees, request.sender_id)?;
903 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
904 self.peer
905 .forward_send(request.sender_id, connection_id, request.payload.clone())
906 });
907 };
908 self.update_user_contacts(user_id).await?;
909 Ok(())
910 }
911
912 async fn register_project_activity(
913 self: Arc<Server>,
914 request: TypedEnvelope<proto::RegisterProjectActivity>,
915 ) -> Result<()> {
916 self.store_mut().await.register_project_activity(
917 ProjectId::from_proto(request.payload.project_id),
918 request.sender_id,
919 )?;
920 Ok(())
921 }
922
923 async fn update_worktree(
924 self: Arc<Server>,
925 request: TypedEnvelope<proto::UpdateWorktree>,
926 response: Response<proto::UpdateWorktree>,
927 ) -> Result<()> {
928 let project_id = ProjectId::from_proto(request.payload.project_id);
929 let worktree_id = request.payload.worktree_id;
930 let (connection_ids, metadata_changed, extension_counts) = {
931 let mut store = self.store_mut().await;
932 let (connection_ids, metadata_changed, extension_counts) = store.update_worktree(
933 request.sender_id,
934 project_id,
935 worktree_id,
936 &request.payload.root_name,
937 &request.payload.removed_entries,
938 &request.payload.updated_entries,
939 request.payload.scan_id,
940 )?;
941 (connection_ids, metadata_changed, extension_counts.clone())
942 };
943 self.app_state
944 .db
945 .update_worktree_extensions(project_id, worktree_id, extension_counts)
946 .await?;
947
948 broadcast(request.sender_id, connection_ids, |connection_id| {
949 self.peer
950 .forward_send(request.sender_id, connection_id, request.payload.clone())
951 });
952 if metadata_changed {
953 let user_id = self
954 .store()
955 .await
956 .user_id_for_connection(request.sender_id)?;
957 self.update_user_contacts(user_id).await?;
958 }
959 response.send(proto::Ack {})?;
960 Ok(())
961 }
962
963 async fn update_diagnostic_summary(
964 self: Arc<Server>,
965 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
966 ) -> Result<()> {
967 let summary = request
968 .payload
969 .summary
970 .clone()
971 .ok_or_else(|| anyhow!("invalid summary"))?;
972 let receiver_ids = self.store_mut().await.update_diagnostic_summary(
973 ProjectId::from_proto(request.payload.project_id),
974 request.payload.worktree_id,
975 request.sender_id,
976 summary,
977 )?;
978
979 broadcast(request.sender_id, receiver_ids, |connection_id| {
980 self.peer
981 .forward_send(request.sender_id, connection_id, request.payload.clone())
982 });
983 Ok(())
984 }
985
986 async fn start_language_server(
987 self: Arc<Server>,
988 request: TypedEnvelope<proto::StartLanguageServer>,
989 ) -> Result<()> {
990 let receiver_ids = self.store_mut().await.start_language_server(
991 ProjectId::from_proto(request.payload.project_id),
992 request.sender_id,
993 request
994 .payload
995 .server
996 .clone()
997 .ok_or_else(|| anyhow!("invalid language server"))?,
998 )?;
999 broadcast(request.sender_id, receiver_ids, |connection_id| {
1000 self.peer
1001 .forward_send(request.sender_id, connection_id, request.payload.clone())
1002 });
1003 Ok(())
1004 }
1005
1006 async fn update_language_server(
1007 self: Arc<Server>,
1008 request: TypedEnvelope<proto::UpdateLanguageServer>,
1009 ) -> Result<()> {
1010 let receiver_ids = self.store().await.project_connection_ids(
1011 ProjectId::from_proto(request.payload.project_id),
1012 request.sender_id,
1013 )?;
1014 broadcast(request.sender_id, receiver_ids, |connection_id| {
1015 self.peer
1016 .forward_send(request.sender_id, connection_id, request.payload.clone())
1017 });
1018 Ok(())
1019 }
1020
1021 async fn forward_project_request<T>(
1022 self: Arc<Server>,
1023 request: TypedEnvelope<T>,
1024 response: Response<T>,
1025 ) -> Result<()>
1026 where
1027 T: EntityMessage + RequestMessage,
1028 {
1029 let host_connection_id = self
1030 .store()
1031 .await
1032 .read_project(
1033 ProjectId::from_proto(request.payload.remote_entity_id()),
1034 request.sender_id,
1035 )?
1036 .host_connection_id;
1037
1038 response.send(
1039 self.peer
1040 .forward_request(request.sender_id, host_connection_id, request.payload)
1041 .await?,
1042 )?;
1043 Ok(())
1044 }
1045
1046 async fn save_buffer(
1047 self: Arc<Server>,
1048 request: TypedEnvelope<proto::SaveBuffer>,
1049 response: Response<proto::SaveBuffer>,
1050 ) -> Result<()> {
1051 let project_id = ProjectId::from_proto(request.payload.project_id);
1052 let host = self
1053 .store()
1054 .await
1055 .read_project(project_id, request.sender_id)?
1056 .host_connection_id;
1057 let response_payload = self
1058 .peer
1059 .forward_request(request.sender_id, host, request.payload.clone())
1060 .await?;
1061
1062 let mut guests = self
1063 .store()
1064 .await
1065 .read_project(project_id, request.sender_id)?
1066 .connection_ids();
1067 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1068 broadcast(host, guests, |conn_id| {
1069 self.peer
1070 .forward_send(host, conn_id, response_payload.clone())
1071 });
1072 response.send(response_payload)?;
1073 Ok(())
1074 }
1075
1076 async fn update_buffer(
1077 self: Arc<Server>,
1078 request: TypedEnvelope<proto::UpdateBuffer>,
1079 response: Response<proto::UpdateBuffer>,
1080 ) -> Result<()> {
1081 let project_id = ProjectId::from_proto(request.payload.project_id);
1082 let receiver_ids = {
1083 let mut store = self.store_mut().await;
1084 store.register_project_activity(project_id, request.sender_id)?;
1085 store.project_connection_ids(project_id, request.sender_id)?
1086 };
1087
1088 broadcast(request.sender_id, receiver_ids, |connection_id| {
1089 self.peer
1090 .forward_send(request.sender_id, connection_id, request.payload.clone())
1091 });
1092 response.send(proto::Ack {})?;
1093 Ok(())
1094 }
1095
1096 async fn update_buffer_file(
1097 self: Arc<Server>,
1098 request: TypedEnvelope<proto::UpdateBufferFile>,
1099 ) -> Result<()> {
1100 let receiver_ids = self.store().await.project_connection_ids(
1101 ProjectId::from_proto(request.payload.project_id),
1102 request.sender_id,
1103 )?;
1104 broadcast(request.sender_id, receiver_ids, |connection_id| {
1105 self.peer
1106 .forward_send(request.sender_id, connection_id, request.payload.clone())
1107 });
1108 Ok(())
1109 }
1110
1111 async fn buffer_reloaded(
1112 self: Arc<Server>,
1113 request: TypedEnvelope<proto::BufferReloaded>,
1114 ) -> Result<()> {
1115 let receiver_ids = self.store().await.project_connection_ids(
1116 ProjectId::from_proto(request.payload.project_id),
1117 request.sender_id,
1118 )?;
1119 broadcast(request.sender_id, receiver_ids, |connection_id| {
1120 self.peer
1121 .forward_send(request.sender_id, connection_id, request.payload.clone())
1122 });
1123 Ok(())
1124 }
1125
1126 async fn buffer_saved(
1127 self: Arc<Server>,
1128 request: TypedEnvelope<proto::BufferSaved>,
1129 ) -> Result<()> {
1130 let receiver_ids = self.store().await.project_connection_ids(
1131 ProjectId::from_proto(request.payload.project_id),
1132 request.sender_id,
1133 )?;
1134 broadcast(request.sender_id, receiver_ids, |connection_id| {
1135 self.peer
1136 .forward_send(request.sender_id, connection_id, request.payload.clone())
1137 });
1138 Ok(())
1139 }
1140
1141 async fn follow(
1142 self: Arc<Self>,
1143 request: TypedEnvelope<proto::Follow>,
1144 response: Response<proto::Follow>,
1145 ) -> Result<()> {
1146 let project_id = ProjectId::from_proto(request.payload.project_id);
1147 let leader_id = ConnectionId(request.payload.leader_id);
1148 let follower_id = request.sender_id;
1149 {
1150 let mut store = self.store_mut().await;
1151 if !store
1152 .project_connection_ids(project_id, follower_id)?
1153 .contains(&leader_id)
1154 {
1155 Err(anyhow!("no such peer"))?;
1156 }
1157
1158 store.register_project_activity(project_id, follower_id)?;
1159 }
1160
1161 let mut response_payload = self
1162 .peer
1163 .forward_request(request.sender_id, leader_id, request.payload)
1164 .await?;
1165 response_payload
1166 .views
1167 .retain(|view| view.leader_id != Some(follower_id.0));
1168 response.send(response_payload)?;
1169 Ok(())
1170 }
1171
1172 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1173 let project_id = ProjectId::from_proto(request.payload.project_id);
1174 let leader_id = ConnectionId(request.payload.leader_id);
1175 let mut store = self.store_mut().await;
1176 if !store
1177 .project_connection_ids(project_id, request.sender_id)?
1178 .contains(&leader_id)
1179 {
1180 Err(anyhow!("no such peer"))?;
1181 }
1182 store.register_project_activity(project_id, request.sender_id)?;
1183 self.peer
1184 .forward_send(request.sender_id, leader_id, request.payload)?;
1185 Ok(())
1186 }
1187
1188 async fn update_followers(
1189 self: Arc<Self>,
1190 request: TypedEnvelope<proto::UpdateFollowers>,
1191 ) -> Result<()> {
1192 let project_id = ProjectId::from_proto(request.payload.project_id);
1193 let mut store = self.store_mut().await;
1194 store.register_project_activity(project_id, request.sender_id)?;
1195 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1196 let leader_id = request
1197 .payload
1198 .variant
1199 .as_ref()
1200 .and_then(|variant| match variant {
1201 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1202 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1203 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1204 });
1205 for follower_id in &request.payload.follower_ids {
1206 let follower_id = ConnectionId(*follower_id);
1207 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1208 self.peer
1209 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1210 }
1211 }
1212 Ok(())
1213 }
1214
1215 async fn get_channels(
1216 self: Arc<Server>,
1217 request: TypedEnvelope<proto::GetChannels>,
1218 response: Response<proto::GetChannels>,
1219 ) -> Result<()> {
1220 let user_id = self
1221 .store()
1222 .await
1223 .user_id_for_connection(request.sender_id)?;
1224 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1225 response.send(proto::GetChannelsResponse {
1226 channels: channels
1227 .into_iter()
1228 .map(|chan| proto::Channel {
1229 id: chan.id.to_proto(),
1230 name: chan.name,
1231 })
1232 .collect(),
1233 })?;
1234 Ok(())
1235 }
1236
1237 async fn get_users(
1238 self: Arc<Server>,
1239 request: TypedEnvelope<proto::GetUsers>,
1240 response: Response<proto::GetUsers>,
1241 ) -> Result<()> {
1242 let user_ids = request
1243 .payload
1244 .user_ids
1245 .into_iter()
1246 .map(UserId::from_proto)
1247 .collect();
1248 let users = self
1249 .app_state
1250 .db
1251 .get_users_by_ids(user_ids)
1252 .await?
1253 .into_iter()
1254 .map(|user| proto::User {
1255 id: user.id.to_proto(),
1256 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1257 github_login: user.github_login,
1258 })
1259 .collect();
1260 response.send(proto::UsersResponse { users })?;
1261 Ok(())
1262 }
1263
1264 async fn fuzzy_search_users(
1265 self: Arc<Server>,
1266 request: TypedEnvelope<proto::FuzzySearchUsers>,
1267 response: Response<proto::FuzzySearchUsers>,
1268 ) -> Result<()> {
1269 let user_id = self
1270 .store()
1271 .await
1272 .user_id_for_connection(request.sender_id)?;
1273 let query = request.payload.query;
1274 let db = &self.app_state.db;
1275 let users = match query.len() {
1276 0 => vec![],
1277 1 | 2 => db
1278 .get_user_by_github_login(&query)
1279 .await?
1280 .into_iter()
1281 .collect(),
1282 _ => db.fuzzy_search_users(&query, 10).await?,
1283 };
1284 let users = users
1285 .into_iter()
1286 .filter(|user| user.id != user_id)
1287 .map(|user| proto::User {
1288 id: user.id.to_proto(),
1289 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1290 github_login: user.github_login,
1291 })
1292 .collect();
1293 response.send(proto::UsersResponse { users })?;
1294 Ok(())
1295 }
1296
1297 async fn request_contact(
1298 self: Arc<Server>,
1299 request: TypedEnvelope<proto::RequestContact>,
1300 response: Response<proto::RequestContact>,
1301 ) -> Result<()> {
1302 let requester_id = self
1303 .store()
1304 .await
1305 .user_id_for_connection(request.sender_id)?;
1306 let responder_id = UserId::from_proto(request.payload.responder_id);
1307 if requester_id == responder_id {
1308 return Err(anyhow!("cannot add yourself as a contact"))?;
1309 }
1310
1311 self.app_state
1312 .db
1313 .send_contact_request(requester_id, responder_id)
1314 .await?;
1315
1316 // Update outgoing contact requests of requester
1317 let mut update = proto::UpdateContacts::default();
1318 update.outgoing_requests.push(responder_id.to_proto());
1319 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1320 self.peer.send(connection_id, update.clone())?;
1321 }
1322
1323 // Update incoming contact requests of responder
1324 let mut update = proto::UpdateContacts::default();
1325 update
1326 .incoming_requests
1327 .push(proto::IncomingContactRequest {
1328 requester_id: requester_id.to_proto(),
1329 should_notify: true,
1330 });
1331 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1332 self.peer.send(connection_id, update.clone())?;
1333 }
1334
1335 response.send(proto::Ack {})?;
1336 Ok(())
1337 }
1338
1339 async fn respond_to_contact_request(
1340 self: Arc<Server>,
1341 request: TypedEnvelope<proto::RespondToContactRequest>,
1342 response: Response<proto::RespondToContactRequest>,
1343 ) -> Result<()> {
1344 let responder_id = self
1345 .store()
1346 .await
1347 .user_id_for_connection(request.sender_id)?;
1348 let requester_id = UserId::from_proto(request.payload.requester_id);
1349 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1350 self.app_state
1351 .db
1352 .dismiss_contact_notification(responder_id, requester_id)
1353 .await?;
1354 } else {
1355 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1356 self.app_state
1357 .db
1358 .respond_to_contact_request(responder_id, requester_id, accept)
1359 .await?;
1360
1361 let store = self.store().await;
1362 // Update responder with new contact
1363 let mut update = proto::UpdateContacts::default();
1364 if accept {
1365 update
1366 .contacts
1367 .push(store.contact_for_user(requester_id, false));
1368 }
1369 update
1370 .remove_incoming_requests
1371 .push(requester_id.to_proto());
1372 for connection_id in store.connection_ids_for_user(responder_id) {
1373 self.peer.send(connection_id, update.clone())?;
1374 }
1375
1376 // Update requester with new contact
1377 let mut update = proto::UpdateContacts::default();
1378 if accept {
1379 update
1380 .contacts
1381 .push(store.contact_for_user(responder_id, true));
1382 }
1383 update
1384 .remove_outgoing_requests
1385 .push(responder_id.to_proto());
1386 for connection_id in store.connection_ids_for_user(requester_id) {
1387 self.peer.send(connection_id, update.clone())?;
1388 }
1389 }
1390
1391 response.send(proto::Ack {})?;
1392 Ok(())
1393 }
1394
1395 async fn remove_contact(
1396 self: Arc<Server>,
1397 request: TypedEnvelope<proto::RemoveContact>,
1398 response: Response<proto::RemoveContact>,
1399 ) -> Result<()> {
1400 let requester_id = self
1401 .store()
1402 .await
1403 .user_id_for_connection(request.sender_id)?;
1404 let responder_id = UserId::from_proto(request.payload.user_id);
1405 self.app_state
1406 .db
1407 .remove_contact(requester_id, responder_id)
1408 .await?;
1409
1410 // Update outgoing contact requests of requester
1411 let mut update = proto::UpdateContacts::default();
1412 update
1413 .remove_outgoing_requests
1414 .push(responder_id.to_proto());
1415 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1416 self.peer.send(connection_id, update.clone())?;
1417 }
1418
1419 // Update incoming contact requests of responder
1420 let mut update = proto::UpdateContacts::default();
1421 update
1422 .remove_incoming_requests
1423 .push(requester_id.to_proto());
1424 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1425 self.peer.send(connection_id, update.clone())?;
1426 }
1427
1428 response.send(proto::Ack {})?;
1429 Ok(())
1430 }
1431
1432 async fn join_channel(
1433 self: Arc<Self>,
1434 request: TypedEnvelope<proto::JoinChannel>,
1435 response: Response<proto::JoinChannel>,
1436 ) -> Result<()> {
1437 let user_id = self
1438 .store()
1439 .await
1440 .user_id_for_connection(request.sender_id)?;
1441 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1442 if !self
1443 .app_state
1444 .db
1445 .can_user_access_channel(user_id, channel_id)
1446 .await?
1447 {
1448 Err(anyhow!("access denied"))?;
1449 }
1450
1451 self.store_mut()
1452 .await
1453 .join_channel(request.sender_id, channel_id);
1454 let messages = self
1455 .app_state
1456 .db
1457 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1458 .await?
1459 .into_iter()
1460 .map(|msg| proto::ChannelMessage {
1461 id: msg.id.to_proto(),
1462 body: msg.body,
1463 timestamp: msg.sent_at.unix_timestamp() as u64,
1464 sender_id: msg.sender_id.to_proto(),
1465 nonce: Some(msg.nonce.as_u128().into()),
1466 })
1467 .collect::<Vec<_>>();
1468 response.send(proto::JoinChannelResponse {
1469 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1470 messages,
1471 })?;
1472 Ok(())
1473 }
1474
1475 async fn leave_channel(
1476 self: Arc<Self>,
1477 request: TypedEnvelope<proto::LeaveChannel>,
1478 ) -> Result<()> {
1479 let user_id = self
1480 .store()
1481 .await
1482 .user_id_for_connection(request.sender_id)?;
1483 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1484 if !self
1485 .app_state
1486 .db
1487 .can_user_access_channel(user_id, channel_id)
1488 .await?
1489 {
1490 Err(anyhow!("access denied"))?;
1491 }
1492
1493 self.store_mut()
1494 .await
1495 .leave_channel(request.sender_id, channel_id);
1496
1497 Ok(())
1498 }
1499
1500 async fn send_channel_message(
1501 self: Arc<Self>,
1502 request: TypedEnvelope<proto::SendChannelMessage>,
1503 response: Response<proto::SendChannelMessage>,
1504 ) -> Result<()> {
1505 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1506 let user_id;
1507 let connection_ids;
1508 {
1509 let state = self.store().await;
1510 user_id = state.user_id_for_connection(request.sender_id)?;
1511 connection_ids = state.channel_connection_ids(channel_id)?;
1512 }
1513
1514 // Validate the message body.
1515 let body = request.payload.body.trim().to_string();
1516 if body.len() > MAX_MESSAGE_LEN {
1517 return Err(anyhow!("message is too long"))?;
1518 }
1519 if body.is_empty() {
1520 return Err(anyhow!("message can't be blank"))?;
1521 }
1522
1523 let timestamp = OffsetDateTime::now_utc();
1524 let nonce = request
1525 .payload
1526 .nonce
1527 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1528
1529 let message_id = self
1530 .app_state
1531 .db
1532 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1533 .await?
1534 .to_proto();
1535 let message = proto::ChannelMessage {
1536 sender_id: user_id.to_proto(),
1537 id: message_id,
1538 body,
1539 timestamp: timestamp.unix_timestamp() as u64,
1540 nonce: Some(nonce),
1541 };
1542 broadcast(request.sender_id, connection_ids, |conn_id| {
1543 self.peer.send(
1544 conn_id,
1545 proto::ChannelMessageSent {
1546 channel_id: channel_id.to_proto(),
1547 message: Some(message.clone()),
1548 },
1549 )
1550 });
1551 response.send(proto::SendChannelMessageResponse {
1552 message: Some(message),
1553 })?;
1554 Ok(())
1555 }
1556
1557 async fn get_channel_messages(
1558 self: Arc<Self>,
1559 request: TypedEnvelope<proto::GetChannelMessages>,
1560 response: Response<proto::GetChannelMessages>,
1561 ) -> Result<()> {
1562 let user_id = self
1563 .store()
1564 .await
1565 .user_id_for_connection(request.sender_id)?;
1566 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1567 if !self
1568 .app_state
1569 .db
1570 .can_user_access_channel(user_id, channel_id)
1571 .await?
1572 {
1573 Err(anyhow!("access denied"))?;
1574 }
1575
1576 let messages = self
1577 .app_state
1578 .db
1579 .get_channel_messages(
1580 channel_id,
1581 MESSAGE_COUNT_PER_PAGE,
1582 Some(MessageId::from_proto(request.payload.before_message_id)),
1583 )
1584 .await?
1585 .into_iter()
1586 .map(|msg| proto::ChannelMessage {
1587 id: msg.id.to_proto(),
1588 body: msg.body,
1589 timestamp: msg.sent_at.unix_timestamp() as u64,
1590 sender_id: msg.sender_id.to_proto(),
1591 nonce: Some(msg.nonce.as_u128().into()),
1592 })
1593 .collect::<Vec<_>>();
1594 response.send(proto::GetChannelMessagesResponse {
1595 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1596 messages,
1597 })?;
1598 Ok(())
1599 }
1600
1601 async fn store<'a>(self: &'a Arc<Self>) -> StoreReadGuard<'a> {
1602 #[cfg(test)]
1603 tokio::task::yield_now().await;
1604 let guard = self.store.read().await;
1605 #[cfg(test)]
1606 tokio::task::yield_now().await;
1607 StoreReadGuard {
1608 guard,
1609 _not_send: PhantomData,
1610 }
1611 }
1612
1613 async fn store_mut<'a>(self: &'a Arc<Self>) -> StoreWriteGuard<'a> {
1614 #[cfg(test)]
1615 tokio::task::yield_now().await;
1616 let guard = self.store.write().await;
1617 #[cfg(test)]
1618 tokio::task::yield_now().await;
1619 StoreWriteGuard {
1620 guard,
1621 _not_send: PhantomData,
1622 }
1623 }
1624
1625 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1626 ServerSnapshot {
1627 store: self.store.read().await,
1628 peer: &self.peer,
1629 }
1630 }
1631}
1632
1633impl<'a> Deref for StoreReadGuard<'a> {
1634 type Target = Store;
1635
1636 fn deref(&self) -> &Self::Target {
1637 &*self.guard
1638 }
1639}
1640
1641impl<'a> Deref for StoreWriteGuard<'a> {
1642 type Target = Store;
1643
1644 fn deref(&self) -> &Self::Target {
1645 &*self.guard
1646 }
1647}
1648
1649impl<'a> DerefMut for StoreWriteGuard<'a> {
1650 fn deref_mut(&mut self) -> &mut Self::Target {
1651 &mut *self.guard
1652 }
1653}
1654
1655impl<'a> Drop for StoreWriteGuard<'a> {
1656 fn drop(&mut self) {
1657 #[cfg(test)]
1658 self.check_invariants();
1659
1660 let metrics = self.metrics();
1661
1662 METRIC_CONNECTIONS.set(metrics.connections as _);
1663 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1664 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1665 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1666
1667 tracing::info!(
1668 connections = metrics.connections,
1669 registered_projects = metrics.registered_projects,
1670 active_projects = metrics.active_projects,
1671 shared_projects = metrics.shared_projects,
1672 "metrics"
1673 );
1674 }
1675}
1676
1677impl Executor for RealExecutor {
1678 type Sleep = Sleep;
1679
1680 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1681 tokio::task::spawn(future);
1682 }
1683
1684 fn sleep(&self, duration: Duration) -> Self::Sleep {
1685 tokio::time::sleep(duration)
1686 }
1687}
1688
1689fn broadcast<F>(
1690 sender_id: ConnectionId,
1691 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1692 mut f: F,
1693) where
1694 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1695{
1696 for receiver_id in receiver_ids {
1697 if receiver_id != sender_id {
1698 f(receiver_id).trace_err();
1699 }
1700 }
1701}
1702
1703lazy_static! {
1704 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1705}
1706
1707pub struct ProtocolVersion(u32);
1708
1709impl Header for ProtocolVersion {
1710 fn name() -> &'static HeaderName {
1711 &ZED_PROTOCOL_VERSION
1712 }
1713
1714 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1715 where
1716 Self: Sized,
1717 I: Iterator<Item = &'i axum::http::HeaderValue>,
1718 {
1719 let version = values
1720 .next()
1721 .ok_or_else(|| axum::headers::Error::invalid())?
1722 .to_str()
1723 .map_err(|_| axum::headers::Error::invalid())?
1724 .parse()
1725 .map_err(|_| axum::headers::Error::invalid())?;
1726 Ok(Self(version))
1727 }
1728
1729 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1730 values.extend([self.0.to_string().parse().unwrap()]);
1731 }
1732}
1733
1734pub fn routes(server: Arc<Server>) -> Router<Body> {
1735 Router::new()
1736 .route("/rpc", get(handle_websocket_request))
1737 .layer(
1738 ServiceBuilder::new()
1739 .layer(Extension(server.app_state.clone()))
1740 .layer(middleware::from_fn(auth::validate_header)),
1741 )
1742 .route("/metrics", get(handle_metrics))
1743 .layer(Extension(server))
1744}
1745
1746pub async fn handle_websocket_request(
1747 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1748 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1749 Extension(server): Extension<Arc<Server>>,
1750 Extension(user): Extension<User>,
1751 ws: WebSocketUpgrade,
1752) -> axum::response::Response {
1753 if protocol_version != rpc::PROTOCOL_VERSION {
1754 return (
1755 StatusCode::UPGRADE_REQUIRED,
1756 "client must be upgraded".to_string(),
1757 )
1758 .into_response();
1759 }
1760 let socket_address = socket_address.to_string();
1761 ws.on_upgrade(move |socket| {
1762 use util::ResultExt;
1763 let socket = socket
1764 .map_ok(to_tungstenite_message)
1765 .err_into()
1766 .with(|message| async move { Ok(to_axum_message(message)) });
1767 let connection = Connection::new(Box::pin(socket));
1768 async move {
1769 server
1770 .handle_connection(connection, socket_address, user, None, RealExecutor)
1771 .await
1772 .log_err();
1773 }
1774 })
1775}
1776
1777pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1778 // We call `store_mut` here for its side effects of updating metrics.
1779 server.store_mut().await;
1780
1781 let encoder = prometheus::TextEncoder::new();
1782 let metric_families = prometheus::gather();
1783 match encoder.encode_to_string(&metric_families) {
1784 Ok(string) => (StatusCode::OK, string).into_response(),
1785 Err(error) => (
1786 StatusCode::INTERNAL_SERVER_ERROR,
1787 format!("failed to encode metrics {:?}", error),
1788 )
1789 .into_response(),
1790 }
1791}
1792
1793fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1794 match message {
1795 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1796 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1797 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1798 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1799 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1800 code: frame.code.into(),
1801 reason: frame.reason,
1802 })),
1803 }
1804}
1805
1806fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1807 match message {
1808 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1809 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1810 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1811 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1812 AxumMessage::Close(frame) => {
1813 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1814 code: frame.code.into(),
1815 reason: frame.reason,
1816 }))
1817 }
1818 }
1819}
1820
1821pub trait ResultExt {
1822 type Ok;
1823
1824 fn trace_err(self) -> Option<Self::Ok>;
1825}
1826
1827impl<T, E> ResultExt for Result<T, E>
1828where
1829 E: std::fmt::Debug,
1830{
1831 type Ok = T;
1832
1833 fn trace_err(self) -> Option<T> {
1834 match self {
1835 Ok(value) => Some(value),
1836 Err(error) => {
1837 tracing::error!("{:?}", error);
1838 None
1839 }
1840 }
1841 }
1842}