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 .add_request_handler(Server::get_private_user_info);
210
211 Arc::new(server)
212 }
213
214 fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
215 where
216 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
217 Fut: 'static + Send + Future<Output = Result<()>>,
218 M: EnvelopedMessage,
219 {
220 let prev_handler = self.handlers.insert(
221 TypeId::of::<M>(),
222 Box::new(move |server, envelope| {
223 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
224 let span = info_span!(
225 "handle message",
226 payload_type = envelope.payload_type_name()
227 );
228 span.in_scope(|| {
229 tracing::info!(
230 payload_type = envelope.payload_type_name(),
231 "message received"
232 );
233 });
234 let future = (handler)(server, *envelope);
235 async move {
236 if let Err(error) = future.await {
237 tracing::error!(%error, "error handling message");
238 }
239 }
240 .instrument(span)
241 .boxed()
242 }),
243 );
244 if prev_handler.is_some() {
245 panic!("registered a handler for the same message twice");
246 }
247 self
248 }
249
250 /// Handle a request while holding a lock to the store. This is useful when we're registering
251 /// a connection but we want to respond on the connection before anybody else can send on it.
252 fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
253 where
254 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>, Response<M>) -> Fut,
255 Fut: Send + Future<Output = Result<()>>,
256 M: RequestMessage,
257 {
258 let handler = Arc::new(handler);
259 self.add_message_handler(move |server, envelope| {
260 let receipt = envelope.receipt();
261 let handler = handler.clone();
262 async move {
263 let responded = Arc::new(AtomicBool::default());
264 let response = Response {
265 server: server.clone(),
266 responded: responded.clone(),
267 receipt: envelope.receipt(),
268 };
269 match (handler)(server.clone(), envelope, response).await {
270 Ok(()) => {
271 if responded.load(std::sync::atomic::Ordering::SeqCst) {
272 Ok(())
273 } else {
274 Err(anyhow!("handler did not send a response"))?
275 }
276 }
277 Err(error) => {
278 server.peer.respond_with_error(
279 receipt,
280 proto::Error {
281 message: error.to_string(),
282 },
283 )?;
284 Err(error)
285 }
286 }
287 }
288 })
289 }
290
291 /// Start a long lived task that records which users are active in which projects.
292 pub fn start_recording_project_activity<E: 'static + Executor>(
293 self: &Arc<Self>,
294 interval: Duration,
295 executor: E,
296 ) {
297 executor.spawn_detached({
298 let this = Arc::downgrade(self);
299 let executor = executor.clone();
300 async move {
301 let mut period_start = OffsetDateTime::now_utc();
302 let mut active_projects = Vec::<(UserId, ProjectId)>::new();
303 loop {
304 let sleep = executor.sleep(interval);
305 sleep.await;
306 let this = if let Some(this) = this.upgrade() {
307 this
308 } else {
309 break;
310 };
311
312 active_projects.clear();
313 active_projects.extend(this.store().await.projects().flat_map(
314 |(project_id, project)| {
315 project.guests.values().chain([&project.host]).filter_map(
316 |collaborator| {
317 if !collaborator.admin
318 && collaborator
319 .last_activity
320 .map_or(false, |activity| activity > period_start)
321 {
322 Some((collaborator.user_id, *project_id))
323 } else {
324 None
325 }
326 },
327 )
328 },
329 ));
330
331 let period_end = OffsetDateTime::now_utc();
332 this.app_state
333 .db
334 .record_user_activity(period_start..period_end, &active_projects)
335 .await
336 .trace_err();
337 period_start = period_end;
338 }
339 }
340 });
341 }
342
343 pub fn handle_connection<E: Executor>(
344 self: &Arc<Self>,
345 connection: Connection,
346 address: String,
347 user: User,
348 mut send_connection_id: Option<mpsc::Sender<ConnectionId>>,
349 executor: E,
350 ) -> impl Future<Output = Result<()>> {
351 let mut this = self.clone();
352 let user_id = user.id;
353 let login = user.github_login;
354 let span = info_span!("handle connection", %user_id, %login, %address);
355 async move {
356 let (connection_id, handle_io, mut incoming_rx) = this
357 .peer
358 .add_connection(connection, {
359 let executor = executor.clone();
360 move |duration| {
361 let timer = executor.sleep(duration);
362 async move {
363 timer.await;
364 }
365 }
366 })
367 .await;
368
369 tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
370
371 if let Some(send_connection_id) = send_connection_id.as_mut() {
372 let _ = send_connection_id.send(connection_id).await;
373 }
374
375 if !user.connected_once {
376 this.peer.send(connection_id, proto::ShowContacts {})?;
377 this.app_state.db.set_user_connected_once(user_id, true).await?;
378 }
379
380 let (contacts, invite_code) = future::try_join(
381 this.app_state.db.get_contacts(user_id),
382 this.app_state.db.get_invite_code_for_user(user_id)
383 ).await?;
384
385 {
386 let mut store = this.store().await;
387 store.add_connection(connection_id, user_id, user.admin);
388 this.peer.send(connection_id, store.build_initial_contacts_update(contacts))?;
389
390 if let Some((code, count)) = invite_code {
391 this.peer.send(connection_id, proto::UpdateInviteInfo {
392 url: format!("{}{}", this.app_state.invite_link_prefix, code),
393 count,
394 })?;
395 }
396 }
397 this.update_user_contacts(user_id).await?;
398
399 let handle_io = handle_io.fuse();
400 futures::pin_mut!(handle_io);
401
402 // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
403 // This prevents deadlocks when e.g., client A performs a request to client B and
404 // client B performs a request to client A. If both clients stop processing further
405 // messages until their respective request completes, they won't have a chance to
406 // respond to the other client's request and cause a deadlock.
407 //
408 // This arrangement ensures we will attempt to process earlier messages first, but fall
409 // back to processing messages arrived later in the spirit of making progress.
410 let mut foreground_message_handlers = FuturesUnordered::new();
411 loop {
412 let next_message = incoming_rx.next().fuse();
413 futures::pin_mut!(next_message);
414 futures::select_biased! {
415 result = handle_io => {
416 if let Err(error) = result {
417 tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
418 }
419 break;
420 }
421 _ = foreground_message_handlers.next() => {}
422 message = next_message => {
423 if let Some(message) = message {
424 let type_name = message.payload_type_name();
425 let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
426 let span_enter = span.enter();
427 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
428 let notifications = this.notifications.clone();
429 let is_background = message.is_background();
430 let handle_message = (handler)(this.clone(), message);
431
432 drop(span_enter);
433 let handle_message = async move {
434 handle_message.await;
435 if let Some(mut notifications) = notifications {
436 let _ = notifications.send(()).await;
437 }
438 }.instrument(span);
439
440 if is_background {
441 executor.spawn_detached(handle_message);
442 } else {
443 foreground_message_handlers.push(handle_message);
444 }
445 } else {
446 tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
447 }
448 } else {
449 tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
450 break;
451 }
452 }
453 }
454 }
455
456 drop(foreground_message_handlers);
457 tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
458 if let Err(error) = this.sign_out(connection_id).await {
459 tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
460 }
461
462 Ok(())
463 }.instrument(span)
464 }
465
466 #[instrument(skip(self), err)]
467 async fn sign_out(self: &mut Arc<Self>, connection_id: ConnectionId) -> Result<()> {
468 self.peer.disconnect(connection_id);
469
470 let mut projects_to_unregister = Vec::new();
471 let removed_user_id;
472 {
473 let mut store = self.store().await;
474 let removed_connection = store.remove_connection(connection_id)?;
475
476 for (project_id, project) in removed_connection.hosted_projects {
477 projects_to_unregister.push(project_id);
478 broadcast(connection_id, project.guests.keys().copied(), |conn_id| {
479 self.peer.send(
480 conn_id,
481 proto::UnregisterProject {
482 project_id: project_id.to_proto(),
483 },
484 )
485 });
486
487 for (_, receipts) in project.join_requests {
488 for receipt in receipts {
489 self.peer.respond(
490 receipt,
491 proto::JoinProjectResponse {
492 variant: Some(proto::join_project_response::Variant::Decline(
493 proto::join_project_response::Decline {
494 reason: proto::join_project_response::decline::Reason::WentOffline as i32
495 },
496 )),
497 },
498 )?;
499 }
500 }
501 }
502
503 for project_id in removed_connection.guest_project_ids {
504 if let Some(project) = store.project(project_id).trace_err() {
505 broadcast(connection_id, project.connection_ids(), |conn_id| {
506 self.peer.send(
507 conn_id,
508 proto::RemoveProjectCollaborator {
509 project_id: project_id.to_proto(),
510 peer_id: connection_id.0,
511 },
512 )
513 });
514 if project.guests.is_empty() {
515 self.peer
516 .send(
517 project.host_connection_id,
518 proto::ProjectUnshared {
519 project_id: project_id.to_proto(),
520 },
521 )
522 .trace_err();
523 }
524 }
525 }
526
527 removed_user_id = removed_connection.user_id;
528 };
529
530 self.update_user_contacts(removed_user_id).await.trace_err();
531
532 for project_id in projects_to_unregister {
533 self.app_state
534 .db
535 .unregister_project(project_id)
536 .await
537 .trace_err();
538 }
539
540 Ok(())
541 }
542
543 pub async fn invite_code_redeemed(
544 self: &Arc<Self>,
545 inviter_id: UserId,
546 invitee_id: UserId,
547 ) -> Result<()> {
548 if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
549 if let Some(code) = &user.invite_code {
550 let store = self.store().await;
551 let invitee_contact = store.contact_for_user(invitee_id, true);
552 for connection_id in store.connection_ids_for_user(inviter_id) {
553 self.peer.send(
554 connection_id,
555 proto::UpdateContacts {
556 contacts: vec![invitee_contact.clone()],
557 ..Default::default()
558 },
559 )?;
560 self.peer.send(
561 connection_id,
562 proto::UpdateInviteInfo {
563 url: format!("{}{}", self.app_state.invite_link_prefix, &code),
564 count: user.invite_count as u32,
565 },
566 )?;
567 }
568 }
569 }
570 Ok(())
571 }
572
573 pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
574 if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
575 if let Some(invite_code) = &user.invite_code {
576 let store = self.store().await;
577 for connection_id in store.connection_ids_for_user(user_id) {
578 self.peer.send(
579 connection_id,
580 proto::UpdateInviteInfo {
581 url: format!("{}{}", self.app_state.invite_link_prefix, invite_code),
582 count: user.invite_count as u32,
583 },
584 )?;
585 }
586 }
587 }
588 Ok(())
589 }
590
591 async fn ping(
592 self: Arc<Server>,
593 _: TypedEnvelope<proto::Ping>,
594 response: Response<proto::Ping>,
595 ) -> Result<()> {
596 response.send(proto::Ack {})?;
597 Ok(())
598 }
599
600 async fn register_project(
601 self: Arc<Server>,
602 request: TypedEnvelope<proto::RegisterProject>,
603 response: Response<proto::RegisterProject>,
604 ) -> Result<()> {
605 let user_id = self
606 .store()
607 .await
608 .user_id_for_connection(request.sender_id)?;
609 let project_id = self.app_state.db.register_project(user_id).await?;
610 self.store().await.register_project(
611 request.sender_id,
612 project_id,
613 request.payload.online,
614 )?;
615
616 response.send(proto::RegisterProjectResponse {
617 project_id: project_id.to_proto(),
618 })?;
619
620 Ok(())
621 }
622
623 async fn unregister_project(
624 self: Arc<Server>,
625 request: TypedEnvelope<proto::UnregisterProject>,
626 response: Response<proto::UnregisterProject>,
627 ) -> Result<()> {
628 let project_id = ProjectId::from_proto(request.payload.project_id);
629 let (user_id, project) = {
630 let mut state = self.store().await;
631 let project = state.unregister_project(project_id, request.sender_id)?;
632 (state.user_id_for_connection(request.sender_id)?, project)
633 };
634 self.app_state.db.unregister_project(project_id).await?;
635
636 broadcast(
637 request.sender_id,
638 project.guests.keys().copied(),
639 |conn_id| {
640 self.peer.send(
641 conn_id,
642 proto::UnregisterProject {
643 project_id: project_id.to_proto(),
644 },
645 )
646 },
647 );
648 for (_, receipts) in project.join_requests {
649 for receipt in receipts {
650 self.peer.respond(
651 receipt,
652 proto::JoinProjectResponse {
653 variant: Some(proto::join_project_response::Variant::Decline(
654 proto::join_project_response::Decline {
655 reason: proto::join_project_response::decline::Reason::Closed
656 as i32,
657 },
658 )),
659 },
660 )?;
661 }
662 }
663
664 // Send out the `UpdateContacts` message before responding to the unregister
665 // request. This way, when the project's host can keep track of the project's
666 // remote id until after they've received the `UpdateContacts` message for
667 // themself.
668 self.update_user_contacts(user_id).await?;
669 response.send(proto::Ack {})?;
670
671 Ok(())
672 }
673
674 async fn update_user_contacts(self: &Arc<Server>, user_id: UserId) -> Result<()> {
675 let contacts = self.app_state.db.get_contacts(user_id).await?;
676 let store = self.store().await;
677 let updated_contact = store.contact_for_user(user_id, false);
678 for contact in contacts {
679 if let db::Contact::Accepted {
680 user_id: contact_user_id,
681 ..
682 } = contact
683 {
684 for contact_conn_id in store.connection_ids_for_user(contact_user_id) {
685 self.peer
686 .send(
687 contact_conn_id,
688 proto::UpdateContacts {
689 contacts: vec![updated_contact.clone()],
690 remove_contacts: Default::default(),
691 incoming_requests: Default::default(),
692 remove_incoming_requests: Default::default(),
693 outgoing_requests: Default::default(),
694 remove_outgoing_requests: Default::default(),
695 },
696 )
697 .trace_err();
698 }
699 }
700 }
701 Ok(())
702 }
703
704 async fn join_project(
705 self: Arc<Server>,
706 request: TypedEnvelope<proto::JoinProject>,
707 response: Response<proto::JoinProject>,
708 ) -> Result<()> {
709 let project_id = ProjectId::from_proto(request.payload.project_id);
710
711 let host_user_id;
712 let guest_user_id;
713 let host_connection_id;
714 {
715 let state = self.store().await;
716 let project = state.project(project_id)?;
717 host_user_id = project.host.user_id;
718 host_connection_id = project.host_connection_id;
719 guest_user_id = state.user_id_for_connection(request.sender_id)?;
720 };
721
722 tracing::info!(%project_id, %host_user_id, %host_connection_id, "join project");
723 let has_contact = self
724 .app_state
725 .db
726 .has_contact(guest_user_id, host_user_id)
727 .await?;
728 if !has_contact {
729 return Err(anyhow!("no such project"))?;
730 }
731
732 self.store().await.request_join_project(
733 guest_user_id,
734 project_id,
735 response.into_receipt(),
736 )?;
737 self.peer.send(
738 host_connection_id,
739 proto::RequestJoinProject {
740 project_id: project_id.to_proto(),
741 requester_id: guest_user_id.to_proto(),
742 },
743 )?;
744 Ok(())
745 }
746
747 async fn respond_to_join_project_request(
748 self: Arc<Server>,
749 request: TypedEnvelope<proto::RespondToJoinProjectRequest>,
750 ) -> Result<()> {
751 let host_user_id;
752
753 {
754 let mut state = self.store().await;
755 let project_id = ProjectId::from_proto(request.payload.project_id);
756 let project = state.project(project_id)?;
757 if project.host_connection_id != request.sender_id {
758 Err(anyhow!("no such connection"))?;
759 }
760
761 host_user_id = project.host.user_id;
762 let guest_user_id = UserId::from_proto(request.payload.requester_id);
763
764 if !request.payload.allow {
765 let receipts = state
766 .deny_join_project_request(request.sender_id, guest_user_id, project_id)
767 .ok_or_else(|| anyhow!("no such request"))?;
768 for receipt in receipts {
769 self.peer.respond(
770 receipt,
771 proto::JoinProjectResponse {
772 variant: Some(proto::join_project_response::Variant::Decline(
773 proto::join_project_response::Decline {
774 reason: proto::join_project_response::decline::Reason::Declined
775 as i32,
776 },
777 )),
778 },
779 )?;
780 }
781 return Ok(());
782 }
783
784 let (receipts_with_replica_ids, project) = state
785 .accept_join_project_request(request.sender_id, guest_user_id, project_id)
786 .ok_or_else(|| anyhow!("no such request"))?;
787
788 let peer_count = project.guests.len();
789 let mut collaborators = Vec::with_capacity(peer_count);
790 collaborators.push(proto::Collaborator {
791 peer_id: project.host_connection_id.0,
792 replica_id: 0,
793 user_id: project.host.user_id.to_proto(),
794 });
795 let worktrees = project
796 .worktrees
797 .iter()
798 .map(|(id, worktree)| proto::WorktreeMetadata {
799 id: *id,
800 root_name: worktree.root_name.clone(),
801 visible: worktree.visible,
802 })
803 .collect::<Vec<_>>();
804
805 // Add all guests other than the requesting user's own connections as collaborators
806 for (guest_conn_id, guest) in &project.guests {
807 if receipts_with_replica_ids
808 .iter()
809 .all(|(receipt, _)| receipt.sender_id != *guest_conn_id)
810 {
811 collaborators.push(proto::Collaborator {
812 peer_id: guest_conn_id.0,
813 replica_id: guest.replica_id as u32,
814 user_id: guest.user_id.to_proto(),
815 });
816 }
817 }
818
819 for conn_id in project.connection_ids() {
820 for (receipt, replica_id) in &receipts_with_replica_ids {
821 if conn_id != receipt.sender_id {
822 self.peer.send(
823 conn_id,
824 proto::AddProjectCollaborator {
825 project_id: project_id.to_proto(),
826 collaborator: Some(proto::Collaborator {
827 peer_id: receipt.sender_id.0,
828 replica_id: *replica_id as u32,
829 user_id: guest_user_id.to_proto(),
830 }),
831 },
832 )?;
833 }
834 }
835 }
836
837 // First, we send the metadata associated with each worktree.
838 for (receipt, replica_id) in &receipts_with_replica_ids {
839 self.peer.respond(
840 *receipt,
841 proto::JoinProjectResponse {
842 variant: Some(proto::join_project_response::Variant::Accept(
843 proto::join_project_response::Accept {
844 worktrees: worktrees.clone(),
845 replica_id: *replica_id as u32,
846 collaborators: collaborators.clone(),
847 language_servers: project.language_servers.clone(),
848 },
849 )),
850 },
851 )?;
852 }
853
854 for (worktree_id, worktree) in &project.worktrees {
855 #[cfg(any(test, feature = "test-support"))]
856 const MAX_CHUNK_SIZE: usize = 2;
857 #[cfg(not(any(test, feature = "test-support")))]
858 const MAX_CHUNK_SIZE: usize = 256;
859
860 // Stream this worktree's entries.
861 let message = proto::UpdateWorktree {
862 project_id: project_id.to_proto(),
863 worktree_id: *worktree_id,
864 root_name: worktree.root_name.clone(),
865 updated_entries: worktree.entries.values().cloned().collect(),
866 removed_entries: Default::default(),
867 scan_id: worktree.scan_id,
868 is_last_update: worktree.is_complete,
869 };
870 for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
871 for (receipt, _) in &receipts_with_replica_ids {
872 self.peer.send(receipt.sender_id, update.clone())?;
873 }
874 }
875
876 // Stream this worktree's diagnostics.
877 for summary in worktree.diagnostic_summaries.values() {
878 for (receipt, _) in &receipts_with_replica_ids {
879 self.peer.send(
880 receipt.sender_id,
881 proto::UpdateDiagnosticSummary {
882 project_id: project_id.to_proto(),
883 worktree_id: *worktree_id,
884 summary: Some(summary.clone()),
885 },
886 )?;
887 }
888 }
889 }
890 }
891
892 self.update_user_contacts(host_user_id).await?;
893 Ok(())
894 }
895
896 async fn leave_project(
897 self: Arc<Server>,
898 request: TypedEnvelope<proto::LeaveProject>,
899 ) -> Result<()> {
900 let sender_id = request.sender_id;
901 let project_id = ProjectId::from_proto(request.payload.project_id);
902 let project;
903 {
904 let mut store = self.store().await;
905 project = store.leave_project(sender_id, project_id)?;
906 tracing::info!(
907 %project_id,
908 host_user_id = %project.host_user_id,
909 host_connection_id = %project.host_connection_id,
910 "leave project"
911 );
912
913 if project.remove_collaborator {
914 broadcast(sender_id, project.connection_ids, |conn_id| {
915 self.peer.send(
916 conn_id,
917 proto::RemoveProjectCollaborator {
918 project_id: project_id.to_proto(),
919 peer_id: sender_id.0,
920 },
921 )
922 });
923 }
924
925 if let Some(requester_id) = project.cancel_request {
926 self.peer.send(
927 project.host_connection_id,
928 proto::JoinProjectRequestCancelled {
929 project_id: project_id.to_proto(),
930 requester_id: requester_id.to_proto(),
931 },
932 )?;
933 }
934
935 if project.unshare {
936 self.peer.send(
937 project.host_connection_id,
938 proto::ProjectUnshared {
939 project_id: project_id.to_proto(),
940 },
941 )?;
942 }
943 }
944 self.update_user_contacts(project.host_user_id).await?;
945 Ok(())
946 }
947
948 async fn update_project(
949 self: Arc<Server>,
950 request: TypedEnvelope<proto::UpdateProject>,
951 ) -> Result<()> {
952 let project_id = ProjectId::from_proto(request.payload.project_id);
953 let user_id;
954 {
955 let mut state = self.store().await;
956 user_id = state.user_id_for_connection(request.sender_id)?;
957 let guest_connection_ids = state
958 .read_project(project_id, request.sender_id)?
959 .guest_connection_ids();
960 let unshared_project = state.update_project(
961 project_id,
962 &request.payload.worktrees,
963 request.payload.online,
964 request.sender_id,
965 )?;
966
967 if let Some(unshared_project) = unshared_project {
968 broadcast(
969 request.sender_id,
970 unshared_project.guests.keys().copied(),
971 |conn_id| {
972 self.peer.send(
973 conn_id,
974 proto::UnregisterProject {
975 project_id: project_id.to_proto(),
976 },
977 )
978 },
979 );
980 for (_, receipts) in unshared_project.pending_join_requests {
981 for receipt in receipts {
982 self.peer.respond(
983 receipt,
984 proto::JoinProjectResponse {
985 variant: Some(proto::join_project_response::Variant::Decline(
986 proto::join_project_response::Decline {
987 reason:
988 proto::join_project_response::decline::Reason::Closed
989 as i32,
990 },
991 )),
992 },
993 )?;
994 }
995 }
996 } else {
997 broadcast(request.sender_id, guest_connection_ids, |connection_id| {
998 self.peer.forward_send(
999 request.sender_id,
1000 connection_id,
1001 request.payload.clone(),
1002 )
1003 });
1004 }
1005 };
1006
1007 self.update_user_contacts(user_id).await?;
1008 Ok(())
1009 }
1010
1011 async fn register_project_activity(
1012 self: Arc<Server>,
1013 request: TypedEnvelope<proto::RegisterProjectActivity>,
1014 ) -> Result<()> {
1015 self.store().await.register_project_activity(
1016 ProjectId::from_proto(request.payload.project_id),
1017 request.sender_id,
1018 )?;
1019 Ok(())
1020 }
1021
1022 async fn update_worktree(
1023 self: Arc<Server>,
1024 request: TypedEnvelope<proto::UpdateWorktree>,
1025 response: Response<proto::UpdateWorktree>,
1026 ) -> Result<()> {
1027 let project_id = ProjectId::from_proto(request.payload.project_id);
1028 let worktree_id = request.payload.worktree_id;
1029 let (connection_ids, metadata_changed) = {
1030 let mut store = self.store().await;
1031 let (connection_ids, metadata_changed) = store.update_worktree(
1032 request.sender_id,
1033 project_id,
1034 worktree_id,
1035 &request.payload.root_name,
1036 &request.payload.removed_entries,
1037 &request.payload.updated_entries,
1038 request.payload.scan_id,
1039 request.payload.is_last_update,
1040 )?;
1041 (connection_ids, metadata_changed)
1042 };
1043
1044 broadcast(request.sender_id, connection_ids, |connection_id| {
1045 self.peer
1046 .forward_send(request.sender_id, connection_id, request.payload.clone())
1047 });
1048 if metadata_changed {
1049 let user_id = self
1050 .store()
1051 .await
1052 .user_id_for_connection(request.sender_id)?;
1053 self.update_user_contacts(user_id).await?;
1054 }
1055 response.send(proto::Ack {})?;
1056 Ok(())
1057 }
1058
1059 async fn update_worktree_extensions(
1060 self: Arc<Server>,
1061 request: TypedEnvelope<proto::UpdateWorktreeExtensions>,
1062 ) -> Result<()> {
1063 let project_id = ProjectId::from_proto(request.payload.project_id);
1064 let worktree_id = request.payload.worktree_id;
1065 let extensions = request
1066 .payload
1067 .extensions
1068 .into_iter()
1069 .zip(request.payload.counts)
1070 .collect();
1071 self.app_state
1072 .db
1073 .update_worktree_extensions(project_id, worktree_id, extensions)
1074 .await?;
1075 Ok(())
1076 }
1077
1078 async fn update_diagnostic_summary(
1079 self: Arc<Server>,
1080 request: TypedEnvelope<proto::UpdateDiagnosticSummary>,
1081 ) -> Result<()> {
1082 let summary = request
1083 .payload
1084 .summary
1085 .clone()
1086 .ok_or_else(|| anyhow!("invalid summary"))?;
1087 let receiver_ids = self.store().await.update_diagnostic_summary(
1088 ProjectId::from_proto(request.payload.project_id),
1089 request.payload.worktree_id,
1090 request.sender_id,
1091 summary,
1092 )?;
1093
1094 broadcast(request.sender_id, receiver_ids, |connection_id| {
1095 self.peer
1096 .forward_send(request.sender_id, connection_id, request.payload.clone())
1097 });
1098 Ok(())
1099 }
1100
1101 async fn start_language_server(
1102 self: Arc<Server>,
1103 request: TypedEnvelope<proto::StartLanguageServer>,
1104 ) -> Result<()> {
1105 let receiver_ids = self.store().await.start_language_server(
1106 ProjectId::from_proto(request.payload.project_id),
1107 request.sender_id,
1108 request
1109 .payload
1110 .server
1111 .clone()
1112 .ok_or_else(|| anyhow!("invalid language server"))?,
1113 )?;
1114 broadcast(request.sender_id, receiver_ids, |connection_id| {
1115 self.peer
1116 .forward_send(request.sender_id, connection_id, request.payload.clone())
1117 });
1118 Ok(())
1119 }
1120
1121 async fn update_language_server(
1122 self: Arc<Server>,
1123 request: TypedEnvelope<proto::UpdateLanguageServer>,
1124 ) -> Result<()> {
1125 let receiver_ids = self.store().await.project_connection_ids(
1126 ProjectId::from_proto(request.payload.project_id),
1127 request.sender_id,
1128 )?;
1129 broadcast(request.sender_id, receiver_ids, |connection_id| {
1130 self.peer
1131 .forward_send(request.sender_id, connection_id, request.payload.clone())
1132 });
1133 Ok(())
1134 }
1135
1136 async fn forward_project_request<T>(
1137 self: Arc<Server>,
1138 request: TypedEnvelope<T>,
1139 response: Response<T>,
1140 ) -> Result<()>
1141 where
1142 T: EntityMessage + RequestMessage,
1143 {
1144 let project_id = ProjectId::from_proto(request.payload.remote_entity_id());
1145 let host_connection_id = self
1146 .store()
1147 .await
1148 .read_project(project_id, request.sender_id)?
1149 .host_connection_id;
1150 let payload = self
1151 .peer
1152 .forward_request(request.sender_id, host_connection_id, request.payload)
1153 .await?;
1154
1155 // Ensure project still exists by the time we get the response from the host.
1156 self.store()
1157 .await
1158 .read_project(project_id, request.sender_id)?;
1159
1160 response.send(payload)?;
1161 Ok(())
1162 }
1163
1164 async fn save_buffer(
1165 self: Arc<Server>,
1166 request: TypedEnvelope<proto::SaveBuffer>,
1167 response: Response<proto::SaveBuffer>,
1168 ) -> Result<()> {
1169 let project_id = ProjectId::from_proto(request.payload.project_id);
1170 let host = self
1171 .store()
1172 .await
1173 .read_project(project_id, request.sender_id)?
1174 .host_connection_id;
1175 let response_payload = self
1176 .peer
1177 .forward_request(request.sender_id, host, request.payload.clone())
1178 .await?;
1179
1180 let mut guests = self
1181 .store()
1182 .await
1183 .read_project(project_id, request.sender_id)?
1184 .connection_ids();
1185 guests.retain(|guest_connection_id| *guest_connection_id != request.sender_id);
1186 broadcast(host, guests, |conn_id| {
1187 self.peer
1188 .forward_send(host, conn_id, response_payload.clone())
1189 });
1190 response.send(response_payload)?;
1191 Ok(())
1192 }
1193
1194 async fn create_buffer_for_peer(
1195 self: Arc<Server>,
1196 request: TypedEnvelope<proto::CreateBufferForPeer>,
1197 ) -> Result<()> {
1198 self.peer.forward_send(
1199 request.sender_id,
1200 ConnectionId(request.payload.peer_id),
1201 request.payload,
1202 )?;
1203 Ok(())
1204 }
1205
1206 async fn update_buffer(
1207 self: Arc<Server>,
1208 request: TypedEnvelope<proto::UpdateBuffer>,
1209 response: Response<proto::UpdateBuffer>,
1210 ) -> Result<()> {
1211 let project_id = ProjectId::from_proto(request.payload.project_id);
1212 let receiver_ids = {
1213 let mut store = self.store().await;
1214 store.register_project_activity(project_id, request.sender_id)?;
1215 store.project_connection_ids(project_id, request.sender_id)?
1216 };
1217
1218 broadcast(request.sender_id, receiver_ids, |connection_id| {
1219 self.peer
1220 .forward_send(request.sender_id, connection_id, request.payload.clone())
1221 });
1222 response.send(proto::Ack {})?;
1223 Ok(())
1224 }
1225
1226 async fn update_buffer_file(
1227 self: Arc<Server>,
1228 request: TypedEnvelope<proto::UpdateBufferFile>,
1229 ) -> Result<()> {
1230 let receiver_ids = self.store().await.project_connection_ids(
1231 ProjectId::from_proto(request.payload.project_id),
1232 request.sender_id,
1233 )?;
1234 broadcast(request.sender_id, receiver_ids, |connection_id| {
1235 self.peer
1236 .forward_send(request.sender_id, connection_id, request.payload.clone())
1237 });
1238 Ok(())
1239 }
1240
1241 async fn buffer_reloaded(
1242 self: Arc<Server>,
1243 request: TypedEnvelope<proto::BufferReloaded>,
1244 ) -> Result<()> {
1245 let receiver_ids = self.store().await.project_connection_ids(
1246 ProjectId::from_proto(request.payload.project_id),
1247 request.sender_id,
1248 )?;
1249 broadcast(request.sender_id, receiver_ids, |connection_id| {
1250 self.peer
1251 .forward_send(request.sender_id, connection_id, request.payload.clone())
1252 });
1253 Ok(())
1254 }
1255
1256 async fn buffer_saved(
1257 self: Arc<Server>,
1258 request: TypedEnvelope<proto::BufferSaved>,
1259 ) -> Result<()> {
1260 let receiver_ids = self.store().await.project_connection_ids(
1261 ProjectId::from_proto(request.payload.project_id),
1262 request.sender_id,
1263 )?;
1264 broadcast(request.sender_id, receiver_ids, |connection_id| {
1265 self.peer
1266 .forward_send(request.sender_id, connection_id, request.payload.clone())
1267 });
1268 Ok(())
1269 }
1270
1271 async fn follow(
1272 self: Arc<Self>,
1273 request: TypedEnvelope<proto::Follow>,
1274 response: Response<proto::Follow>,
1275 ) -> Result<()> {
1276 let project_id = ProjectId::from_proto(request.payload.project_id);
1277 let leader_id = ConnectionId(request.payload.leader_id);
1278 let follower_id = request.sender_id;
1279 {
1280 let mut store = self.store().await;
1281 if !store
1282 .project_connection_ids(project_id, follower_id)?
1283 .contains(&leader_id)
1284 {
1285 Err(anyhow!("no such peer"))?;
1286 }
1287
1288 store.register_project_activity(project_id, follower_id)?;
1289 }
1290
1291 let mut response_payload = self
1292 .peer
1293 .forward_request(request.sender_id, leader_id, request.payload)
1294 .await?;
1295 response_payload
1296 .views
1297 .retain(|view| view.leader_id != Some(follower_id.0));
1298 response.send(response_payload)?;
1299 Ok(())
1300 }
1301
1302 async fn unfollow(self: Arc<Self>, request: TypedEnvelope<proto::Unfollow>) -> Result<()> {
1303 let project_id = ProjectId::from_proto(request.payload.project_id);
1304 let leader_id = ConnectionId(request.payload.leader_id);
1305 let mut store = self.store().await;
1306 if !store
1307 .project_connection_ids(project_id, request.sender_id)?
1308 .contains(&leader_id)
1309 {
1310 Err(anyhow!("no such peer"))?;
1311 }
1312 store.register_project_activity(project_id, request.sender_id)?;
1313 self.peer
1314 .forward_send(request.sender_id, leader_id, request.payload)?;
1315 Ok(())
1316 }
1317
1318 async fn update_followers(
1319 self: Arc<Self>,
1320 request: TypedEnvelope<proto::UpdateFollowers>,
1321 ) -> Result<()> {
1322 let project_id = ProjectId::from_proto(request.payload.project_id);
1323 let mut store = self.store().await;
1324 store.register_project_activity(project_id, request.sender_id)?;
1325 let connection_ids = store.project_connection_ids(project_id, request.sender_id)?;
1326 let leader_id = request
1327 .payload
1328 .variant
1329 .as_ref()
1330 .and_then(|variant| match variant {
1331 proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1332 proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1333 proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1334 });
1335 for follower_id in &request.payload.follower_ids {
1336 let follower_id = ConnectionId(*follower_id);
1337 if connection_ids.contains(&follower_id) && Some(follower_id.0) != leader_id {
1338 self.peer
1339 .forward_send(request.sender_id, follower_id, request.payload.clone())?;
1340 }
1341 }
1342 Ok(())
1343 }
1344
1345 async fn get_channels(
1346 self: Arc<Server>,
1347 request: TypedEnvelope<proto::GetChannels>,
1348 response: Response<proto::GetChannels>,
1349 ) -> Result<()> {
1350 let user_id = self
1351 .store()
1352 .await
1353 .user_id_for_connection(request.sender_id)?;
1354 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
1355 response.send(proto::GetChannelsResponse {
1356 channels: channels
1357 .into_iter()
1358 .map(|chan| proto::Channel {
1359 id: chan.id.to_proto(),
1360 name: chan.name,
1361 })
1362 .collect(),
1363 })?;
1364 Ok(())
1365 }
1366
1367 async fn get_users(
1368 self: Arc<Server>,
1369 request: TypedEnvelope<proto::GetUsers>,
1370 response: Response<proto::GetUsers>,
1371 ) -> Result<()> {
1372 let user_ids = request
1373 .payload
1374 .user_ids
1375 .into_iter()
1376 .map(UserId::from_proto)
1377 .collect();
1378 let users = self
1379 .app_state
1380 .db
1381 .get_users_by_ids(user_ids)
1382 .await?
1383 .into_iter()
1384 .map(|user| proto::User {
1385 id: user.id.to_proto(),
1386 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1387 github_login: user.github_login,
1388 })
1389 .collect();
1390 response.send(proto::UsersResponse { users })?;
1391 Ok(())
1392 }
1393
1394 async fn fuzzy_search_users(
1395 self: Arc<Server>,
1396 request: TypedEnvelope<proto::FuzzySearchUsers>,
1397 response: Response<proto::FuzzySearchUsers>,
1398 ) -> Result<()> {
1399 let user_id = self
1400 .store()
1401 .await
1402 .user_id_for_connection(request.sender_id)?;
1403 let query = request.payload.query;
1404 let db = &self.app_state.db;
1405 let users = match query.len() {
1406 0 => vec![],
1407 1 | 2 => db
1408 .get_user_by_github_account(&query, None)
1409 .await?
1410 .into_iter()
1411 .collect(),
1412 _ => db.fuzzy_search_users(&query, 10).await?,
1413 };
1414 let users = users
1415 .into_iter()
1416 .filter(|user| user.id != user_id)
1417 .map(|user| proto::User {
1418 id: user.id.to_proto(),
1419 avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1420 github_login: user.github_login,
1421 })
1422 .collect();
1423 response.send(proto::UsersResponse { users })?;
1424 Ok(())
1425 }
1426
1427 async fn request_contact(
1428 self: Arc<Server>,
1429 request: TypedEnvelope<proto::RequestContact>,
1430 response: Response<proto::RequestContact>,
1431 ) -> Result<()> {
1432 let requester_id = self
1433 .store()
1434 .await
1435 .user_id_for_connection(request.sender_id)?;
1436 let responder_id = UserId::from_proto(request.payload.responder_id);
1437 if requester_id == responder_id {
1438 return Err(anyhow!("cannot add yourself as a contact"))?;
1439 }
1440
1441 self.app_state
1442 .db
1443 .send_contact_request(requester_id, responder_id)
1444 .await?;
1445
1446 // Update outgoing contact requests of requester
1447 let mut update = proto::UpdateContacts::default();
1448 update.outgoing_requests.push(responder_id.to_proto());
1449 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1450 self.peer.send(connection_id, update.clone())?;
1451 }
1452
1453 // Update incoming contact requests of responder
1454 let mut update = proto::UpdateContacts::default();
1455 update
1456 .incoming_requests
1457 .push(proto::IncomingContactRequest {
1458 requester_id: requester_id.to_proto(),
1459 should_notify: true,
1460 });
1461 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1462 self.peer.send(connection_id, update.clone())?;
1463 }
1464
1465 response.send(proto::Ack {})?;
1466 Ok(())
1467 }
1468
1469 async fn respond_to_contact_request(
1470 self: Arc<Server>,
1471 request: TypedEnvelope<proto::RespondToContactRequest>,
1472 response: Response<proto::RespondToContactRequest>,
1473 ) -> Result<()> {
1474 let responder_id = self
1475 .store()
1476 .await
1477 .user_id_for_connection(request.sender_id)?;
1478 let requester_id = UserId::from_proto(request.payload.requester_id);
1479 if request.payload.response == proto::ContactRequestResponse::Dismiss as i32 {
1480 self.app_state
1481 .db
1482 .dismiss_contact_notification(responder_id, requester_id)
1483 .await?;
1484 } else {
1485 let accept = request.payload.response == proto::ContactRequestResponse::Accept as i32;
1486 self.app_state
1487 .db
1488 .respond_to_contact_request(responder_id, requester_id, accept)
1489 .await?;
1490
1491 let store = self.store().await;
1492 // Update responder with new contact
1493 let mut update = proto::UpdateContacts::default();
1494 if accept {
1495 update
1496 .contacts
1497 .push(store.contact_for_user(requester_id, false));
1498 }
1499 update
1500 .remove_incoming_requests
1501 .push(requester_id.to_proto());
1502 for connection_id in store.connection_ids_for_user(responder_id) {
1503 self.peer.send(connection_id, update.clone())?;
1504 }
1505
1506 // Update requester with new contact
1507 let mut update = proto::UpdateContacts::default();
1508 if accept {
1509 update
1510 .contacts
1511 .push(store.contact_for_user(responder_id, true));
1512 }
1513 update
1514 .remove_outgoing_requests
1515 .push(responder_id.to_proto());
1516 for connection_id in store.connection_ids_for_user(requester_id) {
1517 self.peer.send(connection_id, update.clone())?;
1518 }
1519 }
1520
1521 response.send(proto::Ack {})?;
1522 Ok(())
1523 }
1524
1525 async fn remove_contact(
1526 self: Arc<Server>,
1527 request: TypedEnvelope<proto::RemoveContact>,
1528 response: Response<proto::RemoveContact>,
1529 ) -> Result<()> {
1530 let requester_id = self
1531 .store()
1532 .await
1533 .user_id_for_connection(request.sender_id)?;
1534 let responder_id = UserId::from_proto(request.payload.user_id);
1535 self.app_state
1536 .db
1537 .remove_contact(requester_id, responder_id)
1538 .await?;
1539
1540 // Update outgoing contact requests of requester
1541 let mut update = proto::UpdateContacts::default();
1542 update
1543 .remove_outgoing_requests
1544 .push(responder_id.to_proto());
1545 for connection_id in self.store().await.connection_ids_for_user(requester_id) {
1546 self.peer.send(connection_id, update.clone())?;
1547 }
1548
1549 // Update incoming contact requests of responder
1550 let mut update = proto::UpdateContacts::default();
1551 update
1552 .remove_incoming_requests
1553 .push(requester_id.to_proto());
1554 for connection_id in self.store().await.connection_ids_for_user(responder_id) {
1555 self.peer.send(connection_id, update.clone())?;
1556 }
1557
1558 response.send(proto::Ack {})?;
1559 Ok(())
1560 }
1561
1562 async fn join_channel(
1563 self: Arc<Self>,
1564 request: TypedEnvelope<proto::JoinChannel>,
1565 response: Response<proto::JoinChannel>,
1566 ) -> Result<()> {
1567 let user_id = self
1568 .store()
1569 .await
1570 .user_id_for_connection(request.sender_id)?;
1571 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1572 if !self
1573 .app_state
1574 .db
1575 .can_user_access_channel(user_id, channel_id)
1576 .await?
1577 {
1578 Err(anyhow!("access denied"))?;
1579 }
1580
1581 self.store()
1582 .await
1583 .join_channel(request.sender_id, channel_id);
1584 let messages = self
1585 .app_state
1586 .db
1587 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
1588 .await?
1589 .into_iter()
1590 .map(|msg| proto::ChannelMessage {
1591 id: msg.id.to_proto(),
1592 body: msg.body,
1593 timestamp: msg.sent_at.unix_timestamp() as u64,
1594 sender_id: msg.sender_id.to_proto(),
1595 nonce: Some(msg.nonce.as_u128().into()),
1596 })
1597 .collect::<Vec<_>>();
1598 response.send(proto::JoinChannelResponse {
1599 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1600 messages,
1601 })?;
1602 Ok(())
1603 }
1604
1605 async fn leave_channel(
1606 self: Arc<Self>,
1607 request: TypedEnvelope<proto::LeaveChannel>,
1608 ) -> Result<()> {
1609 let user_id = self
1610 .store()
1611 .await
1612 .user_id_for_connection(request.sender_id)?;
1613 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1614 if !self
1615 .app_state
1616 .db
1617 .can_user_access_channel(user_id, channel_id)
1618 .await?
1619 {
1620 Err(anyhow!("access denied"))?;
1621 }
1622
1623 self.store()
1624 .await
1625 .leave_channel(request.sender_id, channel_id);
1626
1627 Ok(())
1628 }
1629
1630 async fn send_channel_message(
1631 self: Arc<Self>,
1632 request: TypedEnvelope<proto::SendChannelMessage>,
1633 response: Response<proto::SendChannelMessage>,
1634 ) -> Result<()> {
1635 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1636 let user_id;
1637 let connection_ids;
1638 {
1639 let state = self.store().await;
1640 user_id = state.user_id_for_connection(request.sender_id)?;
1641 connection_ids = state.channel_connection_ids(channel_id)?;
1642 }
1643
1644 // Validate the message body.
1645 let body = request.payload.body.trim().to_string();
1646 if body.len() > MAX_MESSAGE_LEN {
1647 return Err(anyhow!("message is too long"))?;
1648 }
1649 if body.is_empty() {
1650 return Err(anyhow!("message can't be blank"))?;
1651 }
1652
1653 let timestamp = OffsetDateTime::now_utc();
1654 let nonce = request
1655 .payload
1656 .nonce
1657 .ok_or_else(|| anyhow!("nonce can't be blank"))?;
1658
1659 let message_id = self
1660 .app_state
1661 .db
1662 .create_channel_message(channel_id, user_id, &body, timestamp, nonce.clone().into())
1663 .await?
1664 .to_proto();
1665 let message = proto::ChannelMessage {
1666 sender_id: user_id.to_proto(),
1667 id: message_id,
1668 body,
1669 timestamp: timestamp.unix_timestamp() as u64,
1670 nonce: Some(nonce),
1671 };
1672 broadcast(request.sender_id, connection_ids, |conn_id| {
1673 self.peer.send(
1674 conn_id,
1675 proto::ChannelMessageSent {
1676 channel_id: channel_id.to_proto(),
1677 message: Some(message.clone()),
1678 },
1679 )
1680 });
1681 response.send(proto::SendChannelMessageResponse {
1682 message: Some(message),
1683 })?;
1684 Ok(())
1685 }
1686
1687 async fn get_channel_messages(
1688 self: Arc<Self>,
1689 request: TypedEnvelope<proto::GetChannelMessages>,
1690 response: Response<proto::GetChannelMessages>,
1691 ) -> Result<()> {
1692 let user_id = self
1693 .store()
1694 .await
1695 .user_id_for_connection(request.sender_id)?;
1696 let channel_id = ChannelId::from_proto(request.payload.channel_id);
1697 if !self
1698 .app_state
1699 .db
1700 .can_user_access_channel(user_id, channel_id)
1701 .await?
1702 {
1703 Err(anyhow!("access denied"))?;
1704 }
1705
1706 let messages = self
1707 .app_state
1708 .db
1709 .get_channel_messages(
1710 channel_id,
1711 MESSAGE_COUNT_PER_PAGE,
1712 Some(MessageId::from_proto(request.payload.before_message_id)),
1713 )
1714 .await?
1715 .into_iter()
1716 .map(|msg| proto::ChannelMessage {
1717 id: msg.id.to_proto(),
1718 body: msg.body,
1719 timestamp: msg.sent_at.unix_timestamp() as u64,
1720 sender_id: msg.sender_id.to_proto(),
1721 nonce: Some(msg.nonce.as_u128().into()),
1722 })
1723 .collect::<Vec<_>>();
1724 response.send(proto::GetChannelMessagesResponse {
1725 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
1726 messages,
1727 })?;
1728 Ok(())
1729 }
1730
1731 async fn get_private_user_info(
1732 self: Arc<Self>,
1733 request: TypedEnvelope<proto::GetPrivateUserInfo>,
1734 response: Response<proto::GetPrivateUserInfo>,
1735 ) -> Result<()> {
1736 let user_id = self
1737 .store()
1738 .await
1739 .user_id_for_connection(request.sender_id)?;
1740 let metrics_id = self.app_state.db.get_user_metrics_id(user_id).await?;
1741 let user = self
1742 .app_state
1743 .db
1744 .get_user_by_id(user_id)
1745 .await?
1746 .ok_or_else(|| anyhow!("user not found"))?;
1747 response.send(proto::GetPrivateUserInfoResponse {
1748 metrics_id,
1749 staff: user.admin,
1750 })?;
1751 Ok(())
1752 }
1753
1754 pub(crate) async fn store(&self) -> StoreGuard<'_> {
1755 #[cfg(test)]
1756 tokio::task::yield_now().await;
1757 let guard = self.store.lock().await;
1758 #[cfg(test)]
1759 tokio::task::yield_now().await;
1760 StoreGuard {
1761 guard,
1762 _not_send: PhantomData,
1763 }
1764 }
1765
1766 pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
1767 ServerSnapshot {
1768 store: self.store().await,
1769 peer: &self.peer,
1770 }
1771 }
1772}
1773
1774impl<'a> Deref for StoreGuard<'a> {
1775 type Target = Store;
1776
1777 fn deref(&self) -> &Self::Target {
1778 &*self.guard
1779 }
1780}
1781
1782impl<'a> DerefMut for StoreGuard<'a> {
1783 fn deref_mut(&mut self) -> &mut Self::Target {
1784 &mut *self.guard
1785 }
1786}
1787
1788impl<'a> Drop for StoreGuard<'a> {
1789 fn drop(&mut self) {
1790 #[cfg(test)]
1791 self.check_invariants();
1792 }
1793}
1794
1795impl Executor for RealExecutor {
1796 type Sleep = Sleep;
1797
1798 fn spawn_detached<F: 'static + Send + Future<Output = ()>>(&self, future: F) {
1799 tokio::task::spawn(future);
1800 }
1801
1802 fn sleep(&self, duration: Duration) -> Self::Sleep {
1803 tokio::time::sleep(duration)
1804 }
1805}
1806
1807fn broadcast<F>(
1808 sender_id: ConnectionId,
1809 receiver_ids: impl IntoIterator<Item = ConnectionId>,
1810 mut f: F,
1811) where
1812 F: FnMut(ConnectionId) -> anyhow::Result<()>,
1813{
1814 for receiver_id in receiver_ids {
1815 if receiver_id != sender_id {
1816 f(receiver_id).trace_err();
1817 }
1818 }
1819}
1820
1821lazy_static! {
1822 static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
1823}
1824
1825pub struct ProtocolVersion(u32);
1826
1827impl Header for ProtocolVersion {
1828 fn name() -> &'static HeaderName {
1829 &ZED_PROTOCOL_VERSION
1830 }
1831
1832 fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
1833 where
1834 Self: Sized,
1835 I: Iterator<Item = &'i axum::http::HeaderValue>,
1836 {
1837 let version = values
1838 .next()
1839 .ok_or_else(axum::headers::Error::invalid)?
1840 .to_str()
1841 .map_err(|_| axum::headers::Error::invalid())?
1842 .parse()
1843 .map_err(|_| axum::headers::Error::invalid())?;
1844 Ok(Self(version))
1845 }
1846
1847 fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
1848 values.extend([self.0.to_string().parse().unwrap()]);
1849 }
1850}
1851
1852pub fn routes(server: Arc<Server>) -> Router<Body> {
1853 Router::new()
1854 .route("/rpc", get(handle_websocket_request))
1855 .layer(
1856 ServiceBuilder::new()
1857 .layer(Extension(server.app_state.clone()))
1858 .layer(middleware::from_fn(auth::validate_header)),
1859 )
1860 .route("/metrics", get(handle_metrics))
1861 .layer(Extension(server))
1862}
1863
1864pub async fn handle_websocket_request(
1865 TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
1866 ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
1867 Extension(server): Extension<Arc<Server>>,
1868 Extension(user): Extension<User>,
1869 ws: WebSocketUpgrade,
1870) -> axum::response::Response {
1871 if protocol_version != rpc::PROTOCOL_VERSION {
1872 return (
1873 StatusCode::UPGRADE_REQUIRED,
1874 "client must be upgraded".to_string(),
1875 )
1876 .into_response();
1877 }
1878 let socket_address = socket_address.to_string();
1879 ws.on_upgrade(move |socket| {
1880 use util::ResultExt;
1881 let socket = socket
1882 .map_ok(to_tungstenite_message)
1883 .err_into()
1884 .with(|message| async move { Ok(to_axum_message(message)) });
1885 let connection = Connection::new(Box::pin(socket));
1886 async move {
1887 server
1888 .handle_connection(connection, socket_address, user, None, RealExecutor)
1889 .await
1890 .log_err();
1891 }
1892 })
1893}
1894
1895pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> axum::response::Response {
1896 // We call `store_mut` here for its side effects of updating metrics.
1897 let metrics = server.store().await.metrics();
1898 METRIC_CONNECTIONS.set(metrics.connections as _);
1899 METRIC_REGISTERED_PROJECTS.set(metrics.registered_projects as _);
1900 METRIC_ACTIVE_PROJECTS.set(metrics.active_projects as _);
1901 METRIC_SHARED_PROJECTS.set(metrics.shared_projects as _);
1902
1903 let encoder = prometheus::TextEncoder::new();
1904 let metric_families = prometheus::gather();
1905 match encoder.encode_to_string(&metric_families) {
1906 Ok(string) => (StatusCode::OK, string).into_response(),
1907 Err(error) => (
1908 StatusCode::INTERNAL_SERVER_ERROR,
1909 format!("failed to encode metrics {:?}", error),
1910 )
1911 .into_response(),
1912 }
1913}
1914
1915fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
1916 match message {
1917 TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
1918 TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
1919 TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
1920 TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
1921 TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
1922 code: frame.code.into(),
1923 reason: frame.reason,
1924 })),
1925 }
1926}
1927
1928fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
1929 match message {
1930 AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
1931 AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
1932 AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
1933 AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
1934 AxumMessage::Close(frame) => {
1935 TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
1936 code: frame.code.into(),
1937 reason: frame.reason,
1938 }))
1939 }
1940 }
1941}
1942
1943pub trait ResultExt {
1944 type Ok;
1945
1946 fn trace_err(self) -> Option<Self::Ok>;
1947}
1948
1949impl<T, E> ResultExt for Result<T, E>
1950where
1951 E: std::fmt::Debug,
1952{
1953 type Ok = T;
1954
1955 fn trace_err(self) -> Option<T> {
1956 match self {
1957 Ok(value) => Some(value),
1958 Err(error) => {
1959 tracing::error!("{:?}", error);
1960 None
1961 }
1962 }
1963 }
1964}