1mod store;
2
3use crate::{
4 auth,
5 db::{self, ChannelId, MessageId, ProjectId, User, UserId},
6 AppState, Result,
7};
8use anyhow::anyhow;
9use async_tungstenite::tungstenite::{
10 protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
11};
12use axum::{
13 body::Body,
14 extract::{
15 ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
16 ConnectInfo, WebSocketUpgrade,
17 },
18 headers::{Header, HeaderName},
19 http::StatusCode,
20 middleware,
21 response::IntoResponse,
22 routing::get,
23 Extension, Router, TypedHeader,
24};
25use collections::HashMap;
26use futures::{
27 channel::mpsc,
28 future::{self, BoxFuture},
29 stream::FuturesUnordered,
30 FutureExt, SinkExt, StreamExt, TryStreamExt,
31};
32use lazy_static::lazy_static;
33use prometheus::{register_int_gauge, IntGauge};
34use rpc::{
35 proto::{self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, RequestMessage},
36 Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
37};
38use serde::{Serialize, Serializer};
39use std::{
40 any::TypeId,
41 future::Future,
42 marker::PhantomData,
43 net::SocketAddr,
44 ops::{Deref, DerefMut},
45 rc::Rc,
46 sync::{
47 atomic::{AtomicBool, Ordering::SeqCst},
48 Arc,
49 },
50 time::Duration,
51};
52use time::OffsetDateTime;
53use tokio::{
54 sync::{Mutex, MutexGuard},
55 time::Sleep,
56};
57use tower::ServiceBuilder;
58use tracing::{info_span, instrument, Instrument};
59
60pub use store::{Store, Worktree};
61
62lazy_static! {
63 static ref METRIC_CONNECTIONS: IntGauge =
64 register_int_gauge!("connections", "number of connections").unwrap();
65 static ref METRIC_REGISTERED_PROJECTS: IntGauge =
66 register_int_gauge!("registered_projects", "number of registered projects").unwrap();
67 static ref METRIC_ACTIVE_PROJECTS: IntGauge =
68 register_int_gauge!("active_projects", "number of active projects").unwrap();
69 static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
70 "shared_projects",
71 "number of open projects with one or more guests"
72 )
73 .unwrap();
74}
75
76type MessageHandler =
77 Box<dyn Send + Sync + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, ()>>;
78
79struct Response<R> {
80 server: Arc<Server>,
81 receipt: Receipt<R>,
82 responded: Arc<AtomicBool>,
83}
84
85impl<R: RequestMessage> Response<R> {
86 fn send(self, payload: R::Response) -> Result<()> {
87 self.responded.store(true, SeqCst);
88 self.server.peer.respond(self.receipt, payload)?;
89 Ok(())
90 }
91
92 fn into_receipt(self) -> Receipt<R> {
93 self.responded.store(true, SeqCst);
94 self.receipt
95 }
96}
97
98pub struct Server {
99 peer: Arc<Peer>,
100 pub(crate) store: Mutex<Store>,
101 app_state: Arc<AppState>,
102 handlers: HashMap<TypeId, MessageHandler>,
103 notifications: Option<mpsc::UnboundedSender<()>>,
104}
105
106pub trait Executor: Send + Clone {
107 type Sleep: Send + Future;
108 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F);
109 fn sleep(&self, duration: Duration) -> Self::Sleep;
110}
111
112#[derive(Clone)]
113pub struct RealExecutor;
114
115const MESSAGE_COUNT_PER_PAGE: usize = 100;
116const MAX_MESSAGE_LEN: usize = 1024;
117
118pub(crate) struct StoreGuard<'a> {
119 guard: MutexGuard<'a, Store>,
120 _not_send: PhantomData<Rc<()>>,
121}
122
123#[derive(Serialize)]
124pub struct ServerSnapshot<'a> {
125 peer: &'a Peer,
126 #[serde(serialize_with = "serialize_deref")]
127 store: StoreGuard<'a>,
128}
129
130pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
131where
132 S: Serializer,
133 T: Deref<Target = U>,
134 U: Serialize,
135{
136 Serialize::serialize(value.deref(), serializer)
137}
138
139impl Server {
140 pub fn new(
141 app_state: Arc<AppState>,
142 notifications: Option<mpsc::UnboundedSender<()>>,
143 ) -> Arc<Self> {
144 let mut server = Self {
145 peer: Peer::new(),
146 app_state,
147 store: Default::default(),
148 handlers: Default::default(),
149 notifications,
150 };
151
152 server
153 .add_request_handler(Server::ping)
154 .add_request_handler(Server::register_project)
155 .add_request_handler(Server::unregister_project)
156 .add_request_handler(Server::join_project)
157 .add_message_handler(Server::leave_project)
158 .add_message_handler(Server::respond_to_join_project_request)
159 .add_message_handler(Server::update_project)
160 .add_message_handler(Server::register_project_activity)
161 .add_request_handler(Server::update_worktree)
162 .add_message_handler(Server::update_worktree_extensions)
163 .add_message_handler(Server::start_language_server)
164 .add_message_handler(Server::update_language_server)
165 .add_message_handler(Server::update_diagnostic_summary)
166 .add_request_handler(Server::forward_project_request::<proto::GetHover>)
167 .add_request_handler(Server::forward_project_request::<proto::GetDefinition>)
168 .add_request_handler(Server::forward_project_request::<proto::GetTypeDefinition>)
169 .add_request_handler(Server::forward_project_request::<proto::GetReferences>)
170 .add_request_handler(Server::forward_project_request::<proto::SearchProject>)
171 .add_request_handler(Server::forward_project_request::<proto::GetDocumentHighlights>)
172 .add_request_handler(Server::forward_project_request::<proto::GetProjectSymbols>)
173 .add_request_handler(Server::forward_project_request::<proto::OpenBufferForSymbol>)
174 .add_request_handler(Server::forward_project_request::<proto::OpenBufferById>)
175 .add_request_handler(Server::forward_project_request::<proto::OpenBufferByPath>)
176 .add_request_handler(Server::forward_project_request::<proto::GetCompletions>)
177 .add_request_handler(
178 Server::forward_project_request::<proto::ApplyCompletionAdditionalEdits>,
179 )
180 .add_request_handler(Server::forward_project_request::<proto::GetCodeActions>)
181 .add_request_handler(Server::forward_project_request::<proto::ApplyCodeAction>)
182 .add_request_handler(Server::forward_project_request::<proto::PrepareRename>)
183 .add_request_handler(Server::forward_project_request::<proto::PerformRename>)
184 .add_request_handler(Server::forward_project_request::<proto::ReloadBuffers>)
185 .add_request_handler(Server::forward_project_request::<proto::FormatBuffers>)
186 .add_request_handler(Server::forward_project_request::<proto::CreateProjectEntry>)
187 .add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
188 .add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
189 .add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
190 .add_message_handler(Server::create_buffer_for_peer)
191 .add_request_handler(Server::update_buffer)
192 .add_message_handler(Server::update_buffer_file)
193 .add_message_handler(Server::buffer_reloaded)
194 .add_message_handler(Server::buffer_saved)
195 .add_request_handler(Server::save_buffer)
196 .add_request_handler(Server::get_channels)
197 .add_request_handler(Server::get_users)
198 .add_request_handler(Server::fuzzy_search_users)
199 .add_request_handler(Server::request_contact)
200 .add_request_handler(Server::remove_contact)
201 .add_request_handler(Server::respond_to_contact_request)
202 .add_request_handler(Server::join_channel)
203 .add_message_handler(Server::leave_channel)
204 .add_request_handler(Server::send_channel_message)
205 .add_request_handler(Server::follow)
206 .add_message_handler(Server::unfollow)
207 .add_message_handler(Server::update_followers)
208 .add_request_handler(Server::get_channel_messages);
209
210 Arc::new(server)
211 }
212
213 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
214 where
215 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
216 Fut: 'static + Send + Future<Output = Result<()>>,
217 M: EnvelopedMessage,
218 {
219 let prev_handler = self.handlers.insert(
220 TypeId::of::<M>(),
221 Box::new(move |server, envelope| {
222 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
223 let span = info_span!(
224 "handle message",
225 payload_type = envelope.payload_type_name()
226 );
227 span.in_scope(|| {
228 tracing::info!(
229 payload_type = envelope.payload_type_name(),
230 "message received"
231 );
232 });
233 let future = (handler)(server, *envelope);
234 async move {
235 if let Err(error) = future.await {
236 tracing::error!(%error, "error handling message");
237 }
238 }
239 .instrument(span)
240 .boxed()
241 }),
242 );
243 if prev_handler.is_some() {
244 panic!("registered a handler for the same message twice");
245 }
246 self
247 }
248
249 /// Handle a request while holding a lock to the store. This is useful when we're registering
250 /// a connection but we want to respond on the connection before anybody else can send on it.
251 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
252 where
253 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
254 Fut: Send + Future<Output = Result<()>>,
255 M: RequestMessage,
256 {
257 let handler = Arc::new(handler);
258 self.add_message_handler(move |server, envelope| {
259 let receipt = envelope.receipt();
260 let handler = handler.clone();
261 async move {
262 let responded = Arc::new(AtomicBool::default());
263 let response = Response {
264 server: server.clone(),
265 responded: responded.clone(),
266 receipt: envelope.receipt(),
267 };
268 match (handler)(server.clone(), envelope, response).await {
269 Ok(()) => {
270 if responded.load(std::sync::atomic::Ordering::SeqCst) {
271 Ok(())
272 } else {
273 Err(anyhow!("handler did not send a response"))?
274 }
275 }
276 Err(error) => {
277 server.peer.respond_with_error(
278 receipt,
279 proto::Error {
280 message: error.to_string(),
281 },
282 )?;
283 Err(error)
284 }
285 }
286 }
287 })
288 }
289
290 /// Start a long lived task that records which users are active in which projects.
291 pub fn start_recording_project_activity<E: 'static + Executor>(
292 self: &Arc<Self>,
293 interval: Duration,
294 executor: E,
295 ) {
296 executor.spawn_detached({
297 let this = Arc::downgrade(self);
298 let executor = executor.clone();
299 async move {
300 let mut period_start = OffsetDateTime::now_utc();
301 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
302 loop {
303 let sleep = executor.sleep(interval);
304 sleep.await;
305 let this = if let Some(this) = this.upgrade() {
306 this
307 } else {
308 break;
309 };
310
311 active_projects.clear();
312 active_projects.extend(this.store().await.projects().flat_map(
313 |(project_id, project)| {
314 project.guests.values().chain([&project.host]).filter_map(
315 |collaborator| {
316 if !collaborator.admin
317 && 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_user_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().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
401 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
402 // This prevents deadlocks when e.g., client A performs a request to client B and
403 // client B performs a request to client A. If both clients stop processing further
404 // messages until their respective request completes, they won't have a chance to
405 // respond to the other client's request and cause a deadlock.
406 //
407 // This arrangement ensures we will attempt to process earlier messages first, but fall
408 // back to processing messages arrived later in the spirit of making progress.
409 let mut foreground_message_handlers = FuturesUnordered::new();
410 loop {
411 let next_message = incoming_rx.next().fuse();
412 futures::pin_mut!(next_message);
413 futures::select_biased! {
414 result = handle_io => {
415 if let Err(error) = result {
416 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
417 }
418 break;
419 }
420 _ = foreground_message_handlers.next() => {}
421 message = next_message => {
422 if let Some(message) = message {
423 let type_name = message.payload_type_name();
424 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
425 let span_enter = span.enter();
426 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
427 let notifications = this.notifications.clone();
428 let is_background = message.is_background();
429 let handle_message = (handler)(this.clone(), message);
430
431 drop(span_enter);
432 let handle_message = async move {
433 handle_message.await;
434 if let Some(mut notifications) = notifications {
435 let _ = notifications.send(()).await;
436 }
437 }.instrument(span);
438
439 if is_background {
440 executor.spawn_detached(handle_message);
441 } else {
442 foreground_message_handlers.push(handle_message);
443 }
444 } else {
445 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
446 }
447 } else {
448 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
449 break;
450 }
451 }
452 }
453 }
454
455 drop(foreground_message_handlers);
456 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
457 if let Err(error) = this.sign_out(connection_id).await {
458 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
459 }
460
461 Ok(())
462 }.instrument(span)
463 }
464
465 #[instrument(skip(self), err)]
466 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
467 self.peer.disconnect(connection_id);
468
469 let mut projects_to_unregister = Vec::new();
470 let removed_user_id;
471 {
472 let mut store = self.store().await;
473 let removed_connection = store.remove_connection(connection_id)?;
474
475 for (project_id, project) in removed_connection.hosted_projects {
476 projects_to_unregister.push(project_id);
477 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
478 self.peer.send(
479 conn_id,
480 proto::UnregisterProject {
481 project_id: project_id.to_proto(),
482 },
483 )
484 });
485
486 for (_, receipts) in project.join_requests {
487 for receipt in receipts {
488 self.peer.respond(
489 receipt,
490 proto::JoinProjectResponse {
491 variant: Some(proto::join_project_response::Variant::Decline(
492 proto::join_project_response::Decline {
493 reason: proto::join_project_response::decline::Reason::WentOffline as i32
494 },
495 )),
496 },
497 )?;
498 }
499 }
500 }
501
502 for project_id in removed_connection.guest_project_ids {
503 if let Some(project) = store.project(project_id).trace_err() {
504 broadcast(connection_id, project.connection_ids(), |conn_id| {
505 self.peer.send(
506 conn_id,
507 proto::RemoveProjectCollaborator {
508 project_id: project_id.to_proto(),
509 peer_id: connection_id.0,
510 },
511 )
512 });
513 if project.guests.is_empty() {
514 self.peer
515 .send(
516 project.host_connection_id,
517 proto::ProjectUnshared {
518 project_id: project_id.to_proto(),
519 },
520 )
521 .trace_err();
522 }
523 }
524 }
525
526 removed_user_id = removed_connection.user_id;
527 };
528
529 self.update_user_contacts(removed_user_id).await.trace_err();
530
531 for project_id in projects_to_unregister {
532 self.app_state
533 .db
534 .unregister_project(project_id)
535 .await
536 .trace_err();
537 }
538
539 Ok(())
540 }
541
542 pub async fn invite_code_redeemed(
543 self: &Arc<Self>,
544 code: &str,
545 invitee_id: UserId,
546 ) -> Result<()> {
547 let user = self.app_state.db.get_user_for_invite_code(code).await?;
548 let store = self.store().await;
549 let invitee_contact = store.contact_for_user(invitee_id, true);
550 for connection_id in store.connection_ids_for_user(user.id) {
551 self.peer.send(
552 connection_id,
553 proto::UpdateContacts {
554 contacts: vec![invitee_contact.clone()],
555 ..Default::default()
556 },
557 )?;
558 self.peer.send(
559 connection_id,
560 proto::UpdateInviteInfo {
561 url: format!("{}{}", self.app_state.invite_link_prefix, code),
562 count: user.invite_count as u32,
563 },
564 )?;
565 }
566 Ok(())
567 }
568
569 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
570 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
571 if let Some(invite_code) = &user.invite_code {
572 let store = self.store().await;
573 for connection_id in store.connection_ids_for_user(user_id) {
574 self.peer.send(
575 connection_id,
576 proto::UpdateInviteInfo {
577 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
578 count: user.invite_count as u32,
579 },
580 )?;
581 }
582 }
583 }
584 Ok(())
585 }
586
587 async fn ping(
588 self: Arc<Server>,
589 _: TypedEnvelope<proto::Ping>,
590 response: Response<proto::Ping>,
591 ) -> Result<()> {
592 response.send(proto::Ack {})?;
593 Ok(())
594 }
595
596 async fn register_project(
597 self: Arc<Server>,
598 request: TypedEnvelope<proto::RegisterProject>,
599 response: Response<proto::RegisterProject>,
600 ) -> Result<()> {
601 let user_id = self
602 .store()
603 .await
604 .user_id_for_connection(request.sender_id)?;
605 let project_id = self.app_state.db.register_project(user_id).await?;
606 self.store().await.register_project(
607 request.sender_id,
608 project_id,
609 request.payload.online,
610 )?;
611
612 response.send(proto::RegisterProjectResponse {
613 project_id: project_id.to_proto(),
614 })?;
615
616 Ok(())
617 }
618
619 async fn unregister_project(
620 self: Arc<Server>,
621 request: TypedEnvelope<proto::UnregisterProject>,
622 response: Response<proto::UnregisterProject>,
623 ) -> Result<()> {
624 let project_id = ProjectId::from_proto(request.payload.project_id);
625 let (user_id, project) = {
626 let mut state = self.store().await;
627 let project = state.unregister_project(project_id, request.sender_id)?;
628 (state.user_id_for_connection(request.sender_id)?, project)
629 };
630 self.app_state.db.unregister_project(project_id).await?;
631
632 broadcast(
633 request.sender_id,
634 project.guests.keys().copied(),
635 |conn_id| {
636 self.peer.send(
637 conn_id,
638 proto::UnregisterProject {
639 project_id: project_id.to_proto(),
640 },
641 )
642 },
643 );
644 for (_, receipts) in project.join_requests {
645 for receipt in receipts {
646 self.peer.respond(
647 receipt,
648 proto::JoinProjectResponse {
649 variant: Some(proto::join_project_response::Variant::Decline(
650 proto::join_project_response::Decline {
651 reason: proto::join_project_response::decline::Reason::Closed
652 as i32,
653 },
654 )),
655 },
656 )?;
657 }
658 }
659
660 // Send out the `UpdateContacts` message before responding to the unregister
661 // request. This way, when the project's host can keep track of the project's
662 // remote id until after they've received the `UpdateContacts` message for
663 // themself.
664 self.update_user_contacts(user_id).await?;
665 response.send(proto::Ack {})?;
666
667 Ok(())
668 }
669
670 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
671 let contacts = self.app_state.db.get_contacts(user_id).await?;
672 let store = self.store().await;
673 let updated_contact = store.contact_for_user(user_id, false);
674 for contact in contacts {
675 if let db::Contact::Accepted {
676 user_id: contact_user_id,
677 ..
678 } = contact
679 {
680 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
681 self.peer
682 .send(
683 contact_conn_id,
684 proto::UpdateContacts {
685 contacts: vec![updated_contact.clone()],
686 remove_contacts: Default::default(),
687 incoming_requests: Default::default(),
688 remove_incoming_requests: Default::default(),
689 outgoing_requests: Default::default(),
690 remove_outgoing_requests: Default::default(),
691 },
692 )
693 .trace_err();
694 }
695 }
696 }
697 Ok(())
698 }
699
700 async fn join_project(
701 self: Arc<Server>,
702 request: TypedEnvelope<proto::JoinProject>,
703 response: Response<proto::JoinProject>,
704 ) -> Result<()> {
705 let project_id = ProjectId::from_proto(request.payload.project_id);
706
707 let host_user_id;
708 let guest_user_id;
709 let host_connection_id;
710 {
711 let state = self.store().await;
712 let project = state.project(project_id)?;
713 host_user_id = project.host.user_id;
714 host_connection_id = project.host_connection_id;
715 guest_user_id = state.user_id_for_connection(request.sender_id)?;
716 };
717
718 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
719 let has_contact = self
720 .app_state
721 .db
722 .has_contact(guest_user_id, host_user_id)
723 .await?;
724 if !has_contact {
725 return Err(anyhow!("no such project"))?;
726 }
727
728 self.store().await.request_join_project(
729 guest_user_id,
730 project_id,
731 response.into_receipt(),
732 )?;
733 self.peer.send(
734 host_connection_id,
735 proto::RequestJoinProject {
736 project_id: project_id.to_proto(),
737 requester_id: guest_user_id.to_proto(),
738 },
739 )?;
740 Ok(())
741 }
742
743 async fn respond_to_join_project_request(
744 self: Arc<Server>,
745 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
746 ) -> Result<()> {
747 let host_user_id;
748
749 {
750 let mut state = self.store().await;
751 let project_id = ProjectId::from_proto(request.payload.project_id);
752 let project = state.project(project_id)?;
753 if project.host_connection_id != request.sender_id {
754 Err(anyhow!("no such connection"))?;
755 }
756
757 host_user_id = project.host.user_id;
758 let guest_user_id = UserId::from_proto(request.payload.requester_id);
759
760 if !request.payload.allow {
761 let receipts = state
762 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
763 .ok_or_else(|| anyhow!("no such request"))?;
764 for receipt in receipts {
765 self.peer.respond(
766 receipt,
767 proto::JoinProjectResponse {
768 variant: Some(proto::join_project_response::Variant::Decline(
769 proto::join_project_response::Decline {
770 reason: proto::join_project_response::decline::Reason::Declined
771 as i32,
772 },
773 )),
774 },
775 )?;
776 }
777 return Ok(());
778 }
779
780 let (receipts_with_replica_ids, project) = state
781 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
782 .ok_or_else(|| anyhow!("no such request"))?;
783
784 let peer_count = project.guests.len();
785 let mut collaborators = Vec::with_capacity(peer_count);
786 collaborators.push(proto::Collaborator {
787 peer_id: project.host_connection_id.0,
788 replica_id: 0,
789 user_id: project.host.user_id.to_proto(),
790 });
791 let worktrees = project
792 .worktrees
793 .iter()
794 .map(|(id, worktree)| proto::WorktreeMetadata {
795 id: *id,
796 root_name: worktree.root_name.clone(),
797 visible: worktree.visible,
798 })
799 .collect::<Vec<_>>();
800
801 // Add all guests other than the requesting user's own connections as collaborators
802 for (guest_conn_id, guest) in &project.guests {
803 if receipts_with_replica_ids
804 .iter()
805 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
806 {
807 collaborators.push(proto::Collaborator {
808 peer_id: guest_conn_id.0,
809 replica_id: guest.replica_id as u32,
810 user_id: guest.user_id.to_proto(),
811 });
812 }
813 }
814
815 for conn_id in project.connection_ids() {
816 for (receipt, replica_id) in &receipts_with_replica_ids {
817 if conn_id != receipt.sender_id {
818 self.peer.send(
819 conn_id,
820 proto::AddProjectCollaborator {
821 project_id: project_id.to_proto(),
822 collaborator: Some(proto::Collaborator {
823 peer_id: receipt.sender_id.0,
824 replica_id: *replica_id as u32,
825 user_id: guest_user_id.to_proto(),
826 }),
827 },
828 )?;
829 }
830 }
831 }
832
833 // First, we send the metadata associated with each worktree.
834 for (receipt, replica_id) in &receipts_with_replica_ids {
835 self.peer.respond(
836 *receipt,
837 proto::JoinProjectResponse {
838 variant: Some(proto::join_project_response::Variant::Accept(
839 proto::join_project_response::Accept {
840 worktrees: worktrees.clone(),
841 replica_id: *replica_id as u32,
842 collaborators: collaborators.clone(),
843 language_servers: project.language_servers.clone(),
844 },
845 )),
846 },
847 )?;
848 }
849
850 for (worktree_id, worktree) in &project.worktrees {
851 #[cfg(any(test, feature = "test-support"))]
852 const MAX_CHUNK_SIZE: usize = 2;
853 #[cfg(not(any(test, feature = "test-support")))]
854 const MAX_CHUNK_SIZE: usize = 256;
855
856 // Stream this worktree's entries.
857 let message = proto::UpdateWorktree {
858 project_id: project_id.to_proto(),
859 worktree_id: *worktree_id,
860 root_name: worktree.root_name.clone(),
861 updated_entries: worktree.entries.values().cloned().collect(),
862 removed_entries: Default::default(),
863 scan_id: worktree.scan_id,
864 is_last_update: worktree.is_complete,
865 };
866 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
867 for (receipt, _) in &receipts_with_replica_ids {
868 self.peer.send(receipt.sender_id, update.clone())?;
869 }
870 }
871
872 // Stream this worktree's diagnostics.
873 for summary in worktree.diagnostic_summaries.values() {
874 for (receipt, _) in &receipts_with_replica_ids {
875 self.peer.send(
876 receipt.sender_id,
877 proto::UpdateDiagnosticSummary {
878 project_id: project_id.to_proto(),
879 worktree_id: *worktree_id,
880 summary: Some(summary.clone()),
881 },
882 )?;
883 }
884 }
885 }
886 }
887
888 self.update_user_contacts(host_user_id).await?;
889 Ok(())
890 }
891
892 async fn leave_project(
893 self: Arc<Server>,
894 request: TypedEnvelope<proto::LeaveProject>,
895 ) -> Result<()> {
896 let sender_id = request.sender_id;
897 let project_id = ProjectId::from_proto(request.payload.project_id);
898 let project;
899 {
900 let mut store = self.store().await;
901 project = store.leave_project(sender_id, project_id)?;
902 tracing::info!(
903 %project_id,
904 host_user_id = %project.host_user_id,
905 host_connection_id = %project.host_connection_id,
906 "leave project"
907 );
908
909 if project.remove_collaborator {
910 broadcast(sender_id, project.connection_ids, |conn_id| {
911 self.peer.send(
912 conn_id,
913 proto::RemoveProjectCollaborator {
914 project_id: project_id.to_proto(),
915 peer_id: sender_id.0,
916 },
917 )
918 });
919 }
920
921 if let Some(requester_id) = project.cancel_request {
922 self.peer.send(
923 project.host_connection_id,
924 proto::JoinProjectRequestCancelled {
925 project_id: project_id.to_proto(),
926 requester_id: requester_id.to_proto(),
927 },
928 )?;
929 }
930
931 if project.unshare {
932 self.peer.send(
933 project.host_connection_id,
934 proto::ProjectUnshared {
935 project_id: project_id.to_proto(),
936 },
937 )?;
938 }
939 }
940 self.update_user_contacts(project.host_user_id).await?;
941 Ok(())
942 }
943
944 async fn update_project(
945 self: Arc<Server>,
946 request: TypedEnvelope<proto::UpdateProject>,
947 ) -> Result<()> {
948 let project_id = ProjectId::from_proto(request.payload.project_id);
949 let user_id;
950 {
951 let mut state = self.store().await;
952 user_id = state.user_id_for_connection(request.sender_id)?;
953 let guest_connection_ids = state
954 .read_project(project_id, request.sender_id)?
955 .guest_connection_ids();
956 let unshared_project = state.update_project(
957 project_id,
958 &request.payload.worktrees,
959 request.payload.online,
960 request.sender_id,
961 )?;
962
963 if let Some(unshared_project) = unshared_project {
964 broadcast(
965 request.sender_id,
966 unshared_project.guests.keys().copied(),
967 |conn_id| {
968 self.peer.send(
969 conn_id,
970 proto::UnregisterProject {
971 project_id: project_id.to_proto(),
972 },
973 )
974 },
975 );
976 for (_, receipts) in unshared_project.pending_join_requests {
977 for receipt in receipts {
978 self.peer.respond(
979 receipt,
980 proto::JoinProjectResponse {
981 variant: Some(proto::join_project_response::Variant::Decline(
982 proto::join_project_response::Decline {
983 reason:
984 proto::join_project_response::decline::Reason::Closed
985 as i32,
986 },
987 )),
988 },
989 )?;
990 }
991 }
992 } else {
993 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
994 self.peer.forward_send(
995 request.sender_id,
996 connection_id,
997 request.payload.clone(),
998 )
999 });
1000 }
1001 };
1002
1003 self.update_user_contacts(user_id).await?;
1004 Ok(())
1005 }
1006
1007 async fn register_project_activity(
1008 self: Arc<Server>,
1009 request: TypedEnvelope<proto::RegisterProjectActivity>,
1010 ) -> Result<()> {
1011 self.store().await.register_project_activity(
1012 ProjectId::from_proto(request.payload.project_id),
1013 request.sender_id,
1014 )?;
1015 Ok(())
1016 }
1017
1018 async fn update_worktree(
1019 self: Arc<Server>,
1020 request: TypedEnvelope<proto::UpdateWorktree>,
1021 response: Response<proto::UpdateWorktree>,
1022 ) -> Result<()> {
1023 let project_id = ProjectId::from_proto(request.payload.project_id);
1024 let worktree_id = request.payload.worktree_id;
1025 let (connection_ids, metadata_changed) = {
1026 let mut store = self.store().await;
1027 let (connection_ids, metadata_changed) = store.update_worktree(
1028 request.sender_id,
1029 project_id,
1030 worktree_id,
1031 &request.payload.root_name,
1032 &request.payload.removed_entries,
1033 &request.payload.updated_entries,
1034 request.payload.scan_id,
1035 request.payload.is_last_update,
1036 )?;
1037 (connection_ids, metadata_changed)
1038 };
1039
1040 broadcast(request.sender_id, connection_ids, |connection_id| {
1041 self.peer
1042 .forward_send(request.sender_id, connection_id, request.payload.clone())
1043 });
1044 if metadata_changed {
1045 let user_id = self
1046 .store()
1047 .await
1048 .user_id_for_connection(request.sender_id)?;
1049 self.update_user_contacts(user_id).await?;
1050 }
1051 response.send(proto::Ack {})?;
1052 Ok(())
1053 }
1054
1055 async fn update_worktree_extensions(
1056 self: Arc<Server>,
1057 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1058 ) -> Result<()> {
1059 let project_id = ProjectId::from_proto(request.payload.project_id);
1060 let worktree_id = request.payload.worktree_id;
1061 let extensions = request
1062 .payload
1063 .extensions
1064 .into_iter()
1065 .zip(request.payload.counts)
1066 .collect();
1067 self.app_state
1068 .db
1069 .update_worktree_extensions(project_id, worktree_id, extensions)
1070 .await?;
1071 Ok(())
1072 }
1073
1074 async fn update_diagnostic_summary(
1075 self: Arc<Server>,
1076 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1077 ) -> Result<()> {
1078 let summary = request
1079 .payload
1080 .summary
1081 .clone()
1082 .ok_or_else(|| anyhow!("invalid summary"))?;
1083 let receiver_ids = self.store().await.update_diagnostic_summary(
1084 ProjectId::from_proto(request.payload.project_id),
1085 request.payload.worktree_id,
1086 request.sender_id,
1087 summary,
1088 )?;
1089
1090 broadcast(request.sender_id, receiver_ids, |connection_id| {
1091 self.peer
1092 .forward_send(request.sender_id, connection_id, request.payload.clone())
1093 });
1094 Ok(())
1095 }
1096
1097 async fn start_language_server(
1098 self: Arc<Server>,
1099 request: TypedEnvelope<proto::StartLanguageServer>,
1100 ) -> Result<()> {
1101 let receiver_ids = self.store().await.start_language_server(
1102 ProjectId::from_proto(request.payload.project_id),
1103 request.sender_id,
1104 request
1105 .payload
1106 .server
1107 .clone()
1108 .ok_or_else(|| anyhow!("invalid language server"))?,
1109 )?;
1110 broadcast(request.sender_id, receiver_ids, |connection_id| {
1111 self.peer
1112 .forward_send(request.sender_id, connection_id, request.payload.clone())
1113 });
1114 Ok(())
1115 }
1116
1117 async fn update_language_server(
1118 self: Arc<Server>,
1119 request: TypedEnvelope<proto::UpdateLanguageServer>,
1120 ) -> Result<()> {
1121 let receiver_ids = self.store().await.project_connection_ids(
1122 ProjectId::from_proto(request.payload.project_id),
1123 request.sender_id,
1124 )?;
1125 broadcast(request.sender_id, receiver_ids, |connection_id| {
1126 self.peer
1127 .forward_send(request.sender_id, connection_id, request.payload.clone())
1128 });
1129 Ok(())
1130 }
1131
1132 async fn forward_project_request<T>(
1133 self: Arc<Server>,
1134 request: TypedEnvelope<T>,
1135 response: Response<T>,
1136 ) -> Result<()>
1137 where
1138 T: EntityMessage + RequestMessage,
1139 {
1140 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1141 let host_connection_id = self
1142 .store()
1143 .await
1144 .read_project(project_id, request.sender_id)?
1145 .host_connection_id;
1146 let payload = self
1147 .peer
1148 .forward_request(request.sender_id, host_connection_id, request.payload)
1149 .await?;
1150
1151 // Ensure project still exists by the time we get the response from the host.
1152 self.store()
1153 .await
1154 .read_project(project_id, request.sender_id)?;
1155
1156 response.send(payload)?;
1157 Ok(())
1158 }
1159
1160 async fn save_buffer(
1161 self: Arc<Server>,
1162 request: TypedEnvelope<proto::SaveBuffer>,
1163 response: Response<proto::SaveBuffer>,
1164 ) -> Result<()> {
1165 let project_id = ProjectId::from_proto(request.payload.project_id);
1166 let host = self
1167 .store()
1168 .await
1169 .read_project(project_id, request.sender_id)?
1170 .host_connection_id;
1171 let response_payload = self
1172 .peer
1173 .forward_request(request.sender_id, host, request.payload.clone())
1174 .await?;
1175
1176 let mut guests = self
1177 .store()
1178 .await
1179 .read_project(project_id, request.sender_id)?
1180 .connection_ids();
1181 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1182 broadcast(host, guests, |conn_id| {
1183 self.peer
1184 .forward_send(host, conn_id, response_payload.clone())
1185 });
1186 response.send(response_payload)?;
1187 Ok(())
1188 }
1189
1190 async fn create_buffer_for_peer(
1191 self: Arc<Server>,
1192 request: TypedEnvelope<proto::CreateBufferForPeer>,
1193 ) -> Result<()> {
1194 self.peer.forward_send(
1195 request.sender_id,
1196 ConnectionId(request.payload.peer_id),
1197 request.payload,
1198 )?;
1199 Ok(())
1200 }
1201
1202 async fn update_buffer(
1203 self: Arc<Server>,
1204 request: TypedEnvelope<proto::UpdateBuffer>,
1205 response: Response<proto::UpdateBuffer>,
1206 ) -> Result<()> {
1207 let project_id = ProjectId::from_proto(request.payload.project_id);
1208 let receiver_ids = {
1209 let mut store = self.store().await;
1210 store.register_project_activity(project_id, request.sender_id)?;
1211 store.project_connection_ids(project_id, request.sender_id)?
1212 };
1213
1214 broadcast(request.sender_id, receiver_ids, |connection_id| {
1215 self.peer
1216 .forward_send(request.sender_id, connection_id, request.payload.clone())
1217 });
1218 response.send(proto::Ack {})?;
1219 Ok(())
1220 }
1221
1222 async fn update_buffer_file(
1223 self: Arc<Server>,
1224 request: TypedEnvelope<proto::UpdateBufferFile>,
1225 ) -> Result<()> {
1226 let receiver_ids = self.store().await.project_connection_ids(
1227 ProjectId::from_proto(request.payload.project_id),
1228 request.sender_id,
1229 )?;
1230 broadcast(request.sender_id, receiver_ids, |connection_id| {
1231 self.peer
1232 .forward_send(request.sender_id, connection_id, request.payload.clone())
1233 });
1234 Ok(())
1235 }
1236
1237 async fn buffer_reloaded(
1238 self: Arc<Server>,
1239 request: TypedEnvelope<proto::BufferReloaded>,
1240 ) -> Result<()> {
1241 let receiver_ids = self.store().await.project_connection_ids(
1242 ProjectId::from_proto(request.payload.project_id),
1243 request.sender_id,
1244 )?;
1245 broadcast(request.sender_id, receiver_ids, |connection_id| {
1246 self.peer
1247 .forward_send(request.sender_id, connection_id, request.payload.clone())
1248 });
1249 Ok(())
1250 }
1251
1252 async fn buffer_saved(
1253 self: Arc<Server>,
1254 request: TypedEnvelope<proto::BufferSaved>,
1255 ) -> Result<()> {
1256 let receiver_ids = self.store().await.project_connection_ids(
1257 ProjectId::from_proto(request.payload.project_id),
1258 request.sender_id,
1259 )?;
1260 broadcast(request.sender_id, receiver_ids, |connection_id| {
1261 self.peer
1262 .forward_send(request.sender_id, connection_id, request.payload.clone())
1263 });
1264 Ok(())
1265 }
1266
1267 async fn follow(
1268 self: Arc<Self>,
1269 request: TypedEnvelope<proto::Follow>,
1270 response: Response<proto::Follow>,
1271 ) -> Result<()> {
1272 let project_id = ProjectId::from_proto(request.payload.project_id);
1273 let leader_id = ConnectionId(request.payload.leader_id);
1274 let follower_id = request.sender_id;
1275 {
1276 let mut store = self.store().await;
1277 if !store
1278 .project_connection_ids(project_id, follower_id)?
1279 .contains(&leader_id)
1280 {
1281 Err(anyhow!("no such peer"))?;
1282 }
1283
1284 store.register_project_activity(project_id, follower_id)?;
1285 }
1286
1287 let mut response_payload = self
1288 .peer
1289 .forward_request(request.sender_id, leader_id, request.payload)
1290 .await?;
1291 response_payload
1292 .views
1293 .retain(|view| view.leader_id != Some(follower_id.0));
1294 response.send(response_payload)?;
1295 Ok(())
1296 }
1297
1298 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1299 let project_id = ProjectId::from_proto(request.payload.project_id);
1300 let leader_id = ConnectionId(request.payload.leader_id);
1301 let mut store = self.store().await;
1302 if !store
1303 .project_connection_ids(project_id, request.sender_id)?
1304 .contains(&leader_id)
1305 {
1306 Err(anyhow!("no such peer"))?;
1307 }
1308 store.register_project_activity(project_id, request.sender_id)?;
1309 self.peer
1310 .forward_send(request.sender_id, leader_id, request.payload)?;
1311 Ok(())
1312 }
1313
1314 async fn update_followers(
1315 self: Arc<Self>,
1316 request: TypedEnvelope<proto::UpdateFollowers>,
1317 ) -> Result<()> {
1318 let project_id = ProjectId::from_proto(request.payload.project_id);
1319 let mut store = self.store().await;
1320 store.register_project_activity(project_id, request.sender_id)?;
1321 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1322 let leader_id = request
1323 .payload
1324 .variant
1325 .as_ref()
1326 .and_then(|variant| match variant {
1327 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1328 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1329 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1330 });
1331 for follower_id in &request.payload.follower_ids {
1332 let follower_id = ConnectionId(*follower_id);
1333 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1334 self.peer
1335 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1336 }
1337 }
1338 Ok(())
1339 }
1340
1341 async fn get_channels(
1342 self: Arc<Server>,
1343 request: TypedEnvelope<proto::GetChannels>,
1344 response: Response<proto::GetChannels>,
1345 ) -> Result<()> {
1346 let user_id = self
1347 .store()
1348 .await
1349 .user_id_for_connection(request.sender_id)?;
1350 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1351 response.send(proto::GetChannelsResponse {
1352 channels: channels
1353 .into_iter()
1354 .map(|chan| proto::Channel {
1355 id: chan.id.to_proto(),
1356 name: chan.name,
1357 })
1358 .collect(),
1359 })?;
1360 Ok(())
1361 }
1362
1363 async fn get_users(
1364 self: Arc<Server>,
1365 request: TypedEnvelope<proto::GetUsers>,
1366 response: Response<proto::GetUsers>,
1367 ) -> Result<()> {
1368 let user_ids = request
1369 .payload
1370 .user_ids
1371 .into_iter()
1372 .map(UserId::from_proto)
1373 .collect();
1374 let users = self
1375 .app_state
1376 .db
1377 .get_users_by_ids(user_ids)
1378 .await?
1379 .into_iter()
1380 .map(|user| proto::User {
1381 id: user.id.to_proto(),
1382 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1383 github_login: user.github_login,
1384 })
1385 .collect();
1386 response.send(proto::UsersResponse { users })?;
1387 Ok(())
1388 }
1389
1390 async fn fuzzy_search_users(
1391 self: Arc<Server>,
1392 request: TypedEnvelope<proto::FuzzySearchUsers>,
1393 response: Response<proto::FuzzySearchUsers>,
1394 ) -> Result<()> {
1395 let user_id = self
1396 .store()
1397 .await
1398 .user_id_for_connection(request.sender_id)?;
1399 let query = request.payload.query;
1400 let db = &self.app_state.db;
1401 let users = match query.len() {
1402 0 => vec![],
1403 1 | 2 => db
1404 .get_user_by_github_login(&query)
1405 .await?
1406 .into_iter()
1407 .collect(),
1408 _ => db.fuzzy_search_users(&query, 10).await?,
1409 };
1410 let users = users
1411 .into_iter()
1412 .filter(|user| user.id != user_id)
1413 .map(|user| proto::User {
1414 id: user.id.to_proto(),
1415 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1416 github_login: user.github_login,
1417 })
1418 .collect();
1419 response.send(proto::UsersResponse { users })?;
1420 Ok(())
1421 }
1422
1423 async fn request_contact(
1424 self: Arc<Server>,
1425 request: TypedEnvelope<proto::RequestContact>,
1426 response: Response<proto::RequestContact>,
1427 ) -> Result<()> {
1428 let requester_id = self
1429 .store()
1430 .await
1431 .user_id_for_connection(request.sender_id)?;
1432 let responder_id = UserId::from_proto(request.payload.responder_id);
1433 if requester_id == responder_id {
1434 return Err(anyhow!("cannot add yourself as a contact"))?;
1435 }
1436
1437 self.app_state
1438 .db
1439 .send_contact_request(requester_id, responder_id)
1440 .await?;
1441
1442 // Update outgoing contact requests of requester
1443 let mut update = proto::UpdateContacts::default();
1444 update.outgoing_requests.push(responder_id.to_proto());
1445 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1446 self.peer.send(connection_id, update.clone())?;
1447 }
1448
1449 // Update incoming contact requests of responder
1450 let mut update = proto::UpdateContacts::default();
1451 update
1452 .incoming_requests
1453 .push(proto::IncomingContactRequest {
1454 requester_id: requester_id.to_proto(),
1455 should_notify: true,
1456 });
1457 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1458 self.peer.send(connection_id, update.clone())?;
1459 }
1460
1461 response.send(proto::Ack {})?;
1462 Ok(())
1463 }
1464
1465 async fn respond_to_contact_request(
1466 self: Arc<Server>,
1467 request: TypedEnvelope<proto::RespondToContactRequest>,
1468 response: Response<proto::RespondToContactRequest>,
1469 ) -> Result<()> {
1470 let responder_id = self
1471 .store()
1472 .await
1473 .user_id_for_connection(request.sender_id)?;
1474 let requester_id = UserId::from_proto(request.payload.requester_id);
1475 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1476 self.app_state
1477 .db
1478 .dismiss_contact_notification(responder_id, requester_id)
1479 .await?;
1480 } else {
1481 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1482 self.app_state
1483 .db
1484 .respond_to_contact_request(responder_id, requester_id, accept)
1485 .await?;
1486
1487 let store = self.store().await;
1488 // Update responder with new contact
1489 let mut update = proto::UpdateContacts::default();
1490 if accept {
1491 update
1492 .contacts
1493 .push(store.contact_for_user(requester_id, false));
1494 }
1495 update
1496 .remove_incoming_requests
1497 .push(requester_id.to_proto());
1498 for connection_id in store.connection_ids_for_user(responder_id) {
1499 self.peer.send(connection_id, update.clone())?;
1500 }
1501
1502 // Update requester with new contact
1503 let mut update = proto::UpdateContacts::default();
1504 if accept {
1505 update
1506 .contacts
1507 .push(store.contact_for_user(responder_id, true));
1508 }
1509 update
1510 .remove_outgoing_requests
1511 .push(responder_id.to_proto());
1512 for connection_id in store.connection_ids_for_user(requester_id) {
1513 self.peer.send(connection_id, update.clone())?;
1514 }
1515 }
1516
1517 response.send(proto::Ack {})?;
1518 Ok(())
1519 }
1520
1521 async fn remove_contact(
1522 self: Arc<Server>,
1523 request: TypedEnvelope<proto::RemoveContact>,
1524 response: Response<proto::RemoveContact>,
1525 ) -> Result<()> {
1526 let requester_id = self
1527 .store()
1528 .await
1529 .user_id_for_connection(request.sender_id)?;
1530 let responder_id = UserId::from_proto(request.payload.user_id);
1531 self.app_state
1532 .db
1533 .remove_contact(requester_id, responder_id)
1534 .await?;
1535
1536 // Update outgoing contact requests of requester
1537 let mut update = proto::UpdateContacts::default();
1538 update
1539 .remove_outgoing_requests
1540 .push(responder_id.to_proto());
1541 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1542 self.peer.send(connection_id, update.clone())?;
1543 }
1544
1545 // Update incoming contact requests of responder
1546 let mut update = proto::UpdateContacts::default();
1547 update
1548 .remove_incoming_requests
1549 .push(requester_id.to_proto());
1550 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1551 self.peer.send(connection_id, update.clone())?;
1552 }
1553
1554 response.send(proto::Ack {})?;
1555 Ok(())
1556 }
1557
1558 async fn join_channel(
1559 self: Arc<Self>,
1560 request: TypedEnvelope<proto::JoinChannel>,
1561 response: Response<proto::JoinChannel>,
1562 ) -> Result<()> {
1563 let user_id = self
1564 .store()
1565 .await
1566 .user_id_for_connection(request.sender_id)?;
1567 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1568 if !self
1569 .app_state
1570 .db
1571 .can_user_access_channel(user_id, channel_id)
1572 .await?
1573 {
1574 Err(anyhow!("access denied"))?;
1575 }
1576
1577 self.store()
1578 .await
1579 .join_channel(request.sender_id, channel_id);
1580 let messages = self
1581 .app_state
1582 .db
1583 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
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::JoinChannelResponse {
1595 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1596 messages,
1597 })?;
1598 Ok(())
1599 }
1600
1601 async fn leave_channel(
1602 self: Arc<Self>,
1603 request: TypedEnvelope<proto::LeaveChannel>,
1604 ) -> Result<()> {
1605 let user_id = self
1606 .store()
1607 .await
1608 .user_id_for_connection(request.sender_id)?;
1609 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1610 if !self
1611 .app_state
1612 .db
1613 .can_user_access_channel(user_id, channel_id)
1614 .await?
1615 {
1616 Err(anyhow!("access denied"))?;
1617 }
1618
1619 self.store()
1620 .await
1621 .leave_channel(request.sender_id, channel_id);
1622
1623 Ok(())
1624 }
1625
1626 async fn send_channel_message(
1627 self: Arc<Self>,
1628 request: TypedEnvelope<proto::SendChannelMessage>,
1629 response: Response<proto::SendChannelMessage>,
1630 ) -> Result<()> {
1631 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1632 let user_id;
1633 let connection_ids;
1634 {
1635 let state = self.store().await;
1636 user_id = state.user_id_for_connection(request.sender_id)?;
1637 connection_ids = state.channel_connection_ids(channel_id)?;
1638 }
1639
1640 // Validate the message body.
1641 let body = request.payload.body.trim().to_string();
1642 if body.len() > MAX_MESSAGE_LEN {
1643 return Err(anyhow!("message is too long"))?;
1644 }
1645 if body.is_empty() {
1646 return Err(anyhow!("message can't be blank"))?;
1647 }
1648
1649 let timestamp = OffsetDateTime::now_utc();
1650 let nonce = request
1651 .payload
1652 .nonce
1653 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1654
1655 let message_id = self
1656 .app_state
1657 .db
1658 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1659 .await?
1660 .to_proto();
1661 let message = proto::ChannelMessage {
1662 sender_id: user_id.to_proto(),
1663 id: message_id,
1664 body,
1665 timestamp: timestamp.unix_timestamp() as u64,
1666 nonce: Some(nonce),
1667 };
1668 broadcast(request.sender_id, connection_ids, |conn_id| {
1669 self.peer.send(
1670 conn_id,
1671 proto::ChannelMessageSent {
1672 channel_id: channel_id.to_proto(),
1673 message: Some(message.clone()),
1674 },
1675 )
1676 });
1677 response.send(proto::SendChannelMessageResponse {
1678 message: Some(message),
1679 })?;
1680 Ok(())
1681 }
1682
1683 async fn get_channel_messages(
1684 self: Arc<Self>,
1685 request: TypedEnvelope<proto::GetChannelMessages>,
1686 response: Response<proto::GetChannelMessages>,
1687 ) -> Result<()> {
1688 let user_id = self
1689 .store()
1690 .await
1691 .user_id_for_connection(request.sender_id)?;
1692 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1693 if !self
1694 .app_state
1695 .db
1696 .can_user_access_channel(user_id, channel_id)
1697 .await?
1698 {
1699 Err(anyhow!("access denied"))?;
1700 }
1701
1702 let messages = self
1703 .app_state
1704 .db
1705 .get_channel_messages(
1706 channel_id,
1707 MESSAGE_COUNT_PER_PAGE,
1708 Some(MessageId::from_proto(request.payload.before_message_id)),
1709 )
1710 .await?
1711 .into_iter()
1712 .map(|msg| proto::ChannelMessage {
1713 id: msg.id.to_proto(),
1714 body: msg.body,
1715 timestamp: msg.sent_at.unix_timestamp() as u64,
1716 sender_id: msg.sender_id.to_proto(),
1717 nonce: Some(msg.nonce.as_u128().into()),
1718 })
1719 .collect::<Vec<_>>();
1720 response.send(proto::GetChannelMessagesResponse {
1721 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1722 messages,
1723 })?;
1724 Ok(())
1725 }
1726
1727 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1728 #[cfg(test)]
1729 tokio::task::yield_now().await;
1730 let guard = self.store.lock().await;
1731 #[cfg(test)]
1732 tokio::task::yield_now().await;
1733 StoreGuard {
1734 guard,
1735 _not_send: PhantomData,
1736 }
1737 }
1738
1739 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1740 ServerSnapshot {
1741 store: self.store().await,
1742 peer: &self.peer,
1743 }
1744 }
1745}
1746
1747impl<'a> Deref for StoreGuard<'a> {
1748 type Target = Store;
1749
1750 fn deref(&self) -> &Self::Target {
1751 &*self.guard
1752 }
1753}
1754
1755impl<'a> DerefMut for StoreGuard<'a> {
1756 fn deref_mut(&mut self) -> &mut Self::Target {
1757 &mut *self.guard
1758 }
1759}
1760
1761impl<'a> Drop for StoreGuard<'a> {
1762 fn drop(&mut self) {
1763 #[cfg(test)]
1764 self.check_invariants();
1765 }
1766}
1767
1768impl Executor for RealExecutor {
1769 type Sleep = Sleep;
1770
1771 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1772 tokio::task::spawn(future);
1773 }
1774
1775 fn sleep(&self, duration: Duration) -> Self::Sleep {
1776 tokio::time::sleep(duration)
1777 }
1778}
1779
1780fn broadcast<F>(
1781 sender_id: ConnectionId,
1782 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1783 mut f: F,
1784) where
1785 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1786{
1787 for receiver_id in receiver_ids {
1788 if receiver_id != sender_id {
1789 f(receiver_id).trace_err();
1790 }
1791 }
1792}
1793
1794lazy_static! {
1795 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1796}
1797
1798pub struct ProtocolVersion(u32);
1799
1800impl Header for ProtocolVersion {
1801 fn name() -> &'static HeaderName {
1802 &ZED_PROTOCOL_VERSION
1803 }
1804
1805 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1806 where
1807 Self: Sized,
1808 I: Iterator<Item = &'i axum::http::HeaderValue>,
1809 {
1810 let version = values
1811 .next()
1812 .ok_or_else(axum::headers::Error::invalid)?
1813 .to_str()
1814 .map_err(|_| axum::headers::Error::invalid())?
1815 .parse()
1816 .map_err(|_| axum::headers::Error::invalid())?;
1817 Ok(Self(version))
1818 }
1819
1820 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1821 values.extend([self.0.to_string().parse().unwrap()]);
1822 }
1823}
1824
1825pub fn routes(server: Arc<Server>) -> Router<Body> {
1826 Router::new()
1827 .route("/rpc", get(handle_websocket_request))
1828 .layer(
1829 ServiceBuilder::new()
1830 .layer(Extension(server.app_state.clone()))
1831 .layer(middleware::from_fn(auth::validate_header)),
1832 )
1833 .route("/metrics", get(handle_metrics))
1834 .layer(Extension(server))
1835}
1836
1837pub async fn handle_websocket_request(
1838 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1839 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1840 Extension(server): Extension<Arc<Server>>,
1841 Extension(user): Extension<User>,
1842 ws: WebSocketUpgrade,
1843) -> axum::response::Response {
1844 if protocol_version != rpc::PROTOCOL_VERSION {
1845 return (
1846 StatusCode::UPGRADE_REQUIRED,
1847 "client must be upgraded".to_string(),
1848 )
1849 .into_response();
1850 }
1851 let socket_address = socket_address.to_string();
1852 ws.on_upgrade(move |socket| {
1853 use util::ResultExt;
1854 let socket = socket
1855 .map_ok(to_tungstenite_message)
1856 .err_into()
1857 .with(|message| async move { Ok(to_axum_message(message)) });
1858 let connection = Connection::new(Box::pin(socket));
1859 async move {
1860 server
1861 .handle_connection(connection, socket_address, user, None, RealExecutor)
1862 .await
1863 .log_err();
1864 }
1865 })
1866}
1867
1868pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1869 // We call `store_mut` here for its side effects of updating metrics.
1870 let metrics = server.store().await.metrics();
1871 METRIC_CONNECTIONS.set(metrics.connections as _);
1872 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1873 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1874 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1875
1876 let encoder = prometheus::TextEncoder::new();
1877 let metric_families = prometheus::gather();
1878 match encoder.encode_to_string(&metric_families) {
1879 Ok(string) => (StatusCode::OK, string).into_response(),
1880 Err(error) => (
1881 StatusCode::INTERNAL_SERVER_ERROR,
1882 format!("failed to encode metrics {:?}", error),
1883 )
1884 .into_response(),
1885 }
1886}
1887
1888fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1889 match message {
1890 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1891 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1892 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1893 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1894 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1895 code: frame.code.into(),
1896 reason: frame.reason,
1897 })),
1898 }
1899}
1900
1901fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1902 match message {
1903 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1904 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1905 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1906 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1907 AxumMessage::Close(frame) => {
1908 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1909 code: frame.code.into(),
1910 reason: frame.reason,
1911 }))
1912 }
1913 }
1914}
1915
1916pub trait ResultExt {
1917 type Ok;
1918
1919 fn trace_err(self) -> Option<Self::Ok>;
1920}
1921
1922impl<T, E> ResultExt for Result<T, E>
1923where
1924 E: std::fmt::Debug,
1925{
1926 type Ok = T;
1927
1928 fn trace_err(self) -> Option<T> {
1929 match self {
1930 Ok(value) => Some(value),
1931 Err(error) => {
1932 tracing::error!("{:?}", error);
1933 None
1934 }
1935 }
1936 }
1937}