1use super::{
2 auth,
3 db::{ChannelId, MessageId, UserId},
4 AppState,
5};
6use anyhow::anyhow;
7use async_std::{sync::RwLock, task};
8use async_tungstenite::{
9 tungstenite::{protocol::Role, Error as WebSocketError, Message as WebSocketMessage},
10 WebSocketStream,
11};
12use futures::{future::BoxFuture, FutureExt};
13use postage::{mpsc, prelude::Sink as _, prelude::Stream as _};
14use sha1::{Digest as _, Sha1};
15use std::{
16 any::TypeId,
17 collections::{hash_map, HashMap, HashSet},
18 future::Future,
19 mem,
20 sync::Arc,
21 time::Instant,
22};
23use surf::StatusCode;
24use tide::log;
25use tide::{
26 http::headers::{HeaderName, CONNECTION, UPGRADE},
27 Request, Response,
28};
29use time::OffsetDateTime;
30use zrpc::{
31 auth::random_token,
32 proto::{self, AnyTypedEnvelope, EnvelopedMessage},
33 ConnectionId, Peer, TypedEnvelope,
34};
35
36type ReplicaId = u16;
37
38type MessageHandler = Box<
39 dyn Send
40 + Sync
41 + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, tide::Result<()>>,
42>;
43
44pub struct Server {
45 peer: Arc<Peer>,
46 state: RwLock<ServerState>,
47 app_state: Arc<AppState>,
48 handlers: HashMap<TypeId, MessageHandler>,
49 notifications: Option<mpsc::Sender<()>>,
50}
51
52#[derive(Default)]
53struct ServerState {
54 connections: HashMap<ConnectionId, Connection>,
55 pub worktrees: HashMap<u64, Worktree>,
56 channels: HashMap<ChannelId, Channel>,
57 next_worktree_id: u64,
58}
59
60struct Connection {
61 user_id: UserId,
62 worktrees: HashSet<u64>,
63 channels: HashSet<ChannelId>,
64}
65
66struct Worktree {
67 host_connection_id: Option<ConnectionId>,
68 guest_connection_ids: HashMap<ConnectionId, ReplicaId>,
69 active_replica_ids: HashSet<ReplicaId>,
70 access_token: String,
71 root_name: String,
72 entries: HashMap<u64, proto::Entry>,
73}
74
75#[derive(Default)]
76struct Channel {
77 connection_ids: HashSet<ConnectionId>,
78}
79
80const MESSAGE_COUNT_PER_PAGE: usize = 50;
81
82impl Server {
83 pub fn new(
84 app_state: Arc<AppState>,
85 peer: Arc<Peer>,
86 notifications: Option<mpsc::Sender<()>>,
87 ) -> Arc<Self> {
88 let mut server = Self {
89 peer,
90 app_state,
91 state: Default::default(),
92 handlers: Default::default(),
93 notifications,
94 };
95
96 server
97 .add_handler(Server::share_worktree)
98 .add_handler(Server::join_worktree)
99 .add_handler(Server::update_worktree)
100 .add_handler(Server::close_worktree)
101 .add_handler(Server::open_buffer)
102 .add_handler(Server::close_buffer)
103 .add_handler(Server::update_buffer)
104 .add_handler(Server::buffer_saved)
105 .add_handler(Server::save_buffer)
106 .add_handler(Server::get_channels)
107 .add_handler(Server::get_users)
108 .add_handler(Server::join_channel)
109 .add_handler(Server::leave_channel)
110 .add_handler(Server::send_channel_message)
111 .add_handler(Server::get_channel_messages);
112
113 Arc::new(server)
114 }
115
116 fn add_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
117 where
118 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
119 Fut: 'static + Send + Future<Output = tide::Result<()>>,
120 M: EnvelopedMessage,
121 {
122 let prev_handler = self.handlers.insert(
123 TypeId::of::<M>(),
124 Box::new(move |server, envelope| {
125 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
126 (handler)(server, *envelope).boxed()
127 }),
128 );
129 if prev_handler.is_some() {
130 panic!("registered a handler for the same message twice");
131 }
132 self
133 }
134
135 pub fn handle_connection<Conn>(
136 self: &Arc<Self>,
137 connection: Conn,
138 addr: String,
139 user_id: UserId,
140 ) -> impl Future<Output = ()>
141 where
142 Conn: 'static
143 + futures::Sink<WebSocketMessage, Error = WebSocketError>
144 + futures::Stream<Item = Result<WebSocketMessage, WebSocketError>>
145 + Send
146 + Unpin,
147 {
148 let this = self.clone();
149 async move {
150 let (connection_id, handle_io, mut incoming_rx) =
151 this.peer.add_connection(connection).await;
152 this.add_connection(connection_id, user_id).await;
153
154 let handle_io = handle_io.fuse();
155 futures::pin_mut!(handle_io);
156 loop {
157 let next_message = incoming_rx.recv().fuse();
158 futures::pin_mut!(next_message);
159 futures::select_biased! {
160 message = next_message => {
161 if let Some(message) = message {
162 let start_time = Instant::now();
163 log::info!("RPC message received: {}", message.payload_type_name());
164 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
165 if let Err(err) = (handler)(this.clone(), message).await {
166 log::error!("error handling message: {:?}", err);
167 } else {
168 log::info!("RPC message handled. duration:{:?}", start_time.elapsed());
169 }
170
171 if let Some(mut notifications) = this.notifications.clone() {
172 let _ = notifications.send(()).await;
173 }
174 } else {
175 log::warn!("unhandled message: {}", message.payload_type_name());
176 }
177 } else {
178 log::info!("rpc connection closed {:?}", addr);
179 break;
180 }
181 }
182 handle_io = handle_io => {
183 if let Err(err) = handle_io {
184 log::error!("error handling rpc connection {:?} - {:?}", addr, err);
185 }
186 break;
187 }
188 }
189 }
190
191 if let Err(err) = this.sign_out(connection_id).await {
192 log::error!("error signing out connection {:?} - {:?}", addr, err);
193 }
194 }
195 }
196
197 async fn sign_out(self: &Arc<Self>, connection_id: zrpc::ConnectionId) -> tide::Result<()> {
198 self.peer.disconnect(connection_id).await;
199 let worktree_ids = self.remove_connection(connection_id).await;
200 for worktree_id in worktree_ids {
201 let state = self.state.read().await;
202 if let Some(worktree) = state.worktrees.get(&worktree_id) {
203 broadcast(connection_id, worktree.connection_ids(), |conn_id| {
204 self.peer.send(
205 conn_id,
206 proto::RemovePeer {
207 worktree_id,
208 peer_id: connection_id.0,
209 },
210 )
211 })
212 .await?;
213 }
214 }
215 Ok(())
216 }
217
218 // Add a new connection associated with a given user.
219 async fn add_connection(&self, connection_id: ConnectionId, user_id: UserId) {
220 self.state.write().await.connections.insert(
221 connection_id,
222 Connection {
223 user_id,
224 worktrees: Default::default(),
225 channels: Default::default(),
226 },
227 );
228 }
229
230 // Remove the given connection and its association with any worktrees.
231 async fn remove_connection(&self, connection_id: ConnectionId) -> Vec<u64> {
232 let mut worktree_ids = Vec::new();
233 let mut state = self.state.write().await;
234 if let Some(connection) = state.connections.remove(&connection_id) {
235 for channel_id in connection.channels {
236 if let Some(channel) = state.channels.get_mut(&channel_id) {
237 channel.connection_ids.remove(&connection_id);
238 }
239 }
240 for worktree_id in connection.worktrees {
241 if let Some(worktree) = state.worktrees.get_mut(&worktree_id) {
242 if worktree.host_connection_id == Some(connection_id) {
243 worktree_ids.push(worktree_id);
244 } else if let Some(replica_id) =
245 worktree.guest_connection_ids.remove(&connection_id)
246 {
247 worktree.active_replica_ids.remove(&replica_id);
248 worktree_ids.push(worktree_id);
249 }
250 }
251 }
252 }
253 worktree_ids
254 }
255
256 async fn share_worktree(
257 self: Arc<Server>,
258 mut request: TypedEnvelope<proto::ShareWorktree>,
259 ) -> tide::Result<()> {
260 let mut state = self.state.write().await;
261 let worktree_id = state.next_worktree_id;
262 state.next_worktree_id += 1;
263 let access_token = random_token();
264 let worktree = request
265 .payload
266 .worktree
267 .as_mut()
268 .ok_or_else(|| anyhow!("missing worktree"))?;
269 let entries = mem::take(&mut worktree.entries)
270 .into_iter()
271 .map(|entry| (entry.id, entry))
272 .collect();
273 state.worktrees.insert(
274 worktree_id,
275 Worktree {
276 host_connection_id: Some(request.sender_id),
277 guest_connection_ids: Default::default(),
278 active_replica_ids: Default::default(),
279 access_token: access_token.clone(),
280 root_name: mem::take(&mut worktree.root_name),
281 entries,
282 },
283 );
284
285 self.peer
286 .respond(
287 request.receipt(),
288 proto::ShareWorktreeResponse {
289 worktree_id,
290 access_token,
291 },
292 )
293 .await?;
294 Ok(())
295 }
296
297 async fn join_worktree(
298 self: Arc<Server>,
299 request: TypedEnvelope<proto::OpenWorktree>,
300 ) -> tide::Result<()> {
301 let worktree_id = request.payload.worktree_id;
302 let access_token = &request.payload.access_token;
303
304 let mut state = self.state.write().await;
305 if let Some((peer_replica_id, worktree)) =
306 state.join_worktree(request.sender_id, worktree_id, access_token)
307 {
308 let mut peers = Vec::new();
309 if let Some(host_connection_id) = worktree.host_connection_id {
310 peers.push(proto::Peer {
311 peer_id: host_connection_id.0,
312 replica_id: 0,
313 });
314 }
315 for (peer_conn_id, peer_replica_id) in &worktree.guest_connection_ids {
316 if *peer_conn_id != request.sender_id {
317 peers.push(proto::Peer {
318 peer_id: peer_conn_id.0,
319 replica_id: *peer_replica_id as u32,
320 });
321 }
322 }
323
324 broadcast(request.sender_id, worktree.connection_ids(), |conn_id| {
325 self.peer.send(
326 conn_id,
327 proto::AddPeer {
328 worktree_id,
329 peer: Some(proto::Peer {
330 peer_id: request.sender_id.0,
331 replica_id: peer_replica_id as u32,
332 }),
333 },
334 )
335 })
336 .await?;
337 self.peer
338 .respond(
339 request.receipt(),
340 proto::OpenWorktreeResponse {
341 worktree_id,
342 worktree: Some(proto::Worktree {
343 root_name: worktree.root_name.clone(),
344 entries: worktree.entries.values().cloned().collect(),
345 }),
346 replica_id: peer_replica_id as u32,
347 peers,
348 },
349 )
350 .await?;
351 } else {
352 self.peer
353 .respond(
354 request.receipt(),
355 proto::OpenWorktreeResponse {
356 worktree_id,
357 worktree: None,
358 replica_id: 0,
359 peers: Vec::new(),
360 },
361 )
362 .await?;
363 }
364
365 Ok(())
366 }
367
368 async fn update_worktree(
369 self: Arc<Server>,
370 request: TypedEnvelope<proto::UpdateWorktree>,
371 ) -> tide::Result<()> {
372 {
373 let mut state = self.state.write().await;
374 let worktree = state.write_worktree(request.payload.worktree_id, request.sender_id)?;
375 for entry_id in &request.payload.removed_entries {
376 worktree.entries.remove(&entry_id);
377 }
378
379 for entry in &request.payload.updated_entries {
380 worktree.entries.insert(entry.id, entry.clone());
381 }
382 }
383
384 self.broadcast_in_worktree(request.payload.worktree_id, &request)
385 .await?;
386 Ok(())
387 }
388
389 async fn close_worktree(
390 self: Arc<Server>,
391 request: TypedEnvelope<proto::CloseWorktree>,
392 ) -> tide::Result<()> {
393 let connection_ids;
394 {
395 let mut state = self.state.write().await;
396 let worktree = state.write_worktree(request.payload.worktree_id, request.sender_id)?;
397 connection_ids = worktree.connection_ids();
398 if worktree.host_connection_id == Some(request.sender_id) {
399 worktree.host_connection_id = None;
400 } else if let Some(replica_id) =
401 worktree.guest_connection_ids.remove(&request.sender_id)
402 {
403 worktree.active_replica_ids.remove(&replica_id);
404 }
405 }
406
407 broadcast(request.sender_id, connection_ids, |conn_id| {
408 self.peer.send(
409 conn_id,
410 proto::RemovePeer {
411 worktree_id: request.payload.worktree_id,
412 peer_id: request.sender_id.0,
413 },
414 )
415 })
416 .await?;
417
418 Ok(())
419 }
420
421 async fn open_buffer(
422 self: Arc<Server>,
423 request: TypedEnvelope<proto::OpenBuffer>,
424 ) -> tide::Result<()> {
425 let receipt = request.receipt();
426 let worktree_id = request.payload.worktree_id;
427 let host_connection_id = self
428 .state
429 .read()
430 .await
431 .read_worktree(worktree_id, request.sender_id)?
432 .host_connection_id()?;
433
434 let response = self
435 .peer
436 .forward_request(request.sender_id, host_connection_id, request.payload)
437 .await?;
438 self.peer.respond(receipt, response).await?;
439 Ok(())
440 }
441
442 async fn close_buffer(
443 self: Arc<Server>,
444 request: TypedEnvelope<proto::CloseBuffer>,
445 ) -> tide::Result<()> {
446 let host_connection_id = self
447 .state
448 .read()
449 .await
450 .read_worktree(request.payload.worktree_id, request.sender_id)?
451 .host_connection_id()?;
452
453 self.peer
454 .forward_send(request.sender_id, host_connection_id, request.payload)
455 .await?;
456
457 Ok(())
458 }
459
460 async fn save_buffer(
461 self: Arc<Server>,
462 request: TypedEnvelope<proto::SaveBuffer>,
463 ) -> tide::Result<()> {
464 let host;
465 let guests;
466 {
467 let state = self.state.read().await;
468 let worktree = state.read_worktree(request.payload.worktree_id, request.sender_id)?;
469 host = worktree.host_connection_id()?;
470 guests = worktree
471 .guest_connection_ids
472 .keys()
473 .copied()
474 .collect::<Vec<_>>();
475 }
476
477 let sender = request.sender_id;
478 let receipt = request.receipt();
479 let response = self
480 .peer
481 .forward_request(sender, host, request.payload.clone())
482 .await?;
483
484 broadcast(host, guests, |conn_id| {
485 let response = response.clone();
486 let peer = &self.peer;
487 async move {
488 if conn_id == sender {
489 peer.respond(receipt, response).await
490 } else {
491 peer.forward_send(host, conn_id, response).await
492 }
493 }
494 })
495 .await?;
496
497 Ok(())
498 }
499
500 async fn update_buffer(
501 self: Arc<Server>,
502 request: TypedEnvelope<proto::UpdateBuffer>,
503 ) -> tide::Result<()> {
504 self.broadcast_in_worktree(request.payload.worktree_id, &request)
505 .await
506 }
507
508 async fn buffer_saved(
509 self: Arc<Server>,
510 request: TypedEnvelope<proto::BufferSaved>,
511 ) -> tide::Result<()> {
512 self.broadcast_in_worktree(request.payload.worktree_id, &request)
513 .await
514 }
515
516 async fn get_channels(
517 self: Arc<Server>,
518 request: TypedEnvelope<proto::GetChannels>,
519 ) -> tide::Result<()> {
520 let user_id = self
521 .state
522 .read()
523 .await
524 .user_id_for_connection(request.sender_id)?;
525 let channels = self.app_state.db.get_channels_for_user(user_id).await?;
526 self.peer
527 .respond(
528 request.receipt(),
529 proto::GetChannelsResponse {
530 channels: channels
531 .into_iter()
532 .map(|chan| proto::Channel {
533 id: chan.id.to_proto(),
534 name: chan.name,
535 })
536 .collect(),
537 },
538 )
539 .await?;
540 Ok(())
541 }
542
543 async fn get_users(
544 self: Arc<Server>,
545 request: TypedEnvelope<proto::GetUsers>,
546 ) -> tide::Result<()> {
547 let user_id = self
548 .state
549 .read()
550 .await
551 .user_id_for_connection(request.sender_id)?;
552 let receipt = request.receipt();
553 let user_ids = request.payload.user_ids.into_iter().map(UserId::from_proto);
554 let users = self
555 .app_state
556 .db
557 .get_users_by_ids(user_id, user_ids)
558 .await?
559 .into_iter()
560 .map(|user| proto::User {
561 id: user.id.to_proto(),
562 github_login: user.github_login,
563 avatar_url: String::new(),
564 })
565 .collect();
566 self.peer
567 .respond(receipt, proto::GetUsersResponse { users })
568 .await?;
569 Ok(())
570 }
571
572 async fn join_channel(
573 self: Arc<Self>,
574 request: TypedEnvelope<proto::JoinChannel>,
575 ) -> tide::Result<()> {
576 let user_id = self
577 .state
578 .read()
579 .await
580 .user_id_for_connection(request.sender_id)?;
581 let channel_id = ChannelId::from_proto(request.payload.channel_id);
582 if !self
583 .app_state
584 .db
585 .can_user_access_channel(user_id, channel_id)
586 .await?
587 {
588 Err(anyhow!("access denied"))?;
589 }
590
591 self.state
592 .write()
593 .await
594 .join_channel(request.sender_id, channel_id);
595 let messages = self
596 .app_state
597 .db
598 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
599 .await?
600 .into_iter()
601 .map(|msg| proto::ChannelMessage {
602 id: msg.id.to_proto(),
603 body: msg.body,
604 timestamp: msg.sent_at.unix_timestamp() as u64,
605 sender_id: msg.sender_id.to_proto(),
606 })
607 .collect::<Vec<_>>();
608 self.peer
609 .respond(
610 request.receipt(),
611 proto::JoinChannelResponse {
612 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
613 messages,
614 },
615 )
616 .await?;
617 Ok(())
618 }
619
620 async fn leave_channel(
621 self: Arc<Self>,
622 request: TypedEnvelope<proto::LeaveChannel>,
623 ) -> tide::Result<()> {
624 let user_id = self
625 .state
626 .read()
627 .await
628 .user_id_for_connection(request.sender_id)?;
629 let channel_id = ChannelId::from_proto(request.payload.channel_id);
630 if !self
631 .app_state
632 .db
633 .can_user_access_channel(user_id, channel_id)
634 .await?
635 {
636 Err(anyhow!("access denied"))?;
637 }
638
639 self.state
640 .write()
641 .await
642 .leave_channel(request.sender_id, channel_id);
643
644 Ok(())
645 }
646
647 async fn send_channel_message(
648 self: Arc<Self>,
649 request: TypedEnvelope<proto::SendChannelMessage>,
650 ) -> tide::Result<()> {
651 let channel_id = ChannelId::from_proto(request.payload.channel_id);
652 let user_id;
653 let connection_ids;
654 {
655 let state = self.state.read().await;
656 user_id = state.user_id_for_connection(request.sender_id)?;
657 if let Some(channel) = state.channels.get(&channel_id) {
658 connection_ids = channel.connection_ids();
659 } else {
660 return Ok(());
661 }
662 }
663
664 let timestamp = OffsetDateTime::now_utc();
665 let message_id = self
666 .app_state
667 .db
668 .create_channel_message(channel_id, user_id, &request.payload.body, timestamp)
669 .await?
670 .to_proto();
671 let receipt = request.receipt();
672 let message = proto::ChannelMessageSent {
673 channel_id: channel_id.to_proto(),
674 message: Some(proto::ChannelMessage {
675 sender_id: user_id.to_proto(),
676 id: message_id,
677 body: request.payload.body,
678 timestamp: timestamp.unix_timestamp() as u64,
679 }),
680 };
681 broadcast(request.sender_id, connection_ids, |conn_id| {
682 self.peer.send(conn_id, message.clone())
683 })
684 .await?;
685 self.peer
686 .respond(
687 receipt,
688 proto::SendChannelMessageResponse {
689 message_id,
690 timestamp: timestamp.unix_timestamp() as u64,
691 },
692 )
693 .await?;
694 Ok(())
695 }
696
697 async fn get_channel_messages(
698 self: Arc<Self>,
699 request: TypedEnvelope<proto::GetChannelMessages>,
700 ) -> tide::Result<()> {
701 let user_id = self
702 .state
703 .read()
704 .await
705 .user_id_for_connection(request.sender_id)?;
706 let channel_id = ChannelId::from_proto(request.payload.channel_id);
707 if !self
708 .app_state
709 .db
710 .can_user_access_channel(user_id, channel_id)
711 .await?
712 {
713 Err(anyhow!("access denied"))?;
714 }
715
716 let messages = self
717 .app_state
718 .db
719 .get_channel_messages(
720 channel_id,
721 MESSAGE_COUNT_PER_PAGE,
722 Some(MessageId::from_proto(request.payload.before_message_id)),
723 )
724 .await?
725 .into_iter()
726 .map(|msg| proto::ChannelMessage {
727 id: msg.id.to_proto(),
728 body: msg.body,
729 timestamp: msg.sent_at.unix_timestamp() as u64,
730 sender_id: msg.sender_id.to_proto(),
731 })
732 .collect::<Vec<_>>();
733 self.peer
734 .respond(
735 request.receipt(),
736 proto::GetChannelMessagesResponse {
737 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
738 messages,
739 },
740 )
741 .await?;
742 Ok(())
743 }
744
745 async fn broadcast_in_worktree<T: proto::EnvelopedMessage>(
746 &self,
747 worktree_id: u64,
748 message: &TypedEnvelope<T>,
749 ) -> tide::Result<()> {
750 let connection_ids = self
751 .state
752 .read()
753 .await
754 .read_worktree(worktree_id, message.sender_id)?
755 .connection_ids();
756
757 broadcast(message.sender_id, connection_ids, |conn_id| {
758 self.peer
759 .forward_send(message.sender_id, conn_id, message.payload.clone())
760 })
761 .await?;
762
763 Ok(())
764 }
765}
766
767pub async fn broadcast<F, T>(
768 sender_id: ConnectionId,
769 receiver_ids: Vec<ConnectionId>,
770 mut f: F,
771) -> anyhow::Result<()>
772where
773 F: FnMut(ConnectionId) -> T,
774 T: Future<Output = anyhow::Result<()>>,
775{
776 let futures = receiver_ids
777 .into_iter()
778 .filter(|id| *id != sender_id)
779 .map(|id| f(id));
780 futures::future::try_join_all(futures).await?;
781 Ok(())
782}
783
784impl ServerState {
785 fn join_channel(&mut self, connection_id: ConnectionId, channel_id: ChannelId) {
786 if let Some(connection) = self.connections.get_mut(&connection_id) {
787 connection.channels.insert(channel_id);
788 self.channels
789 .entry(channel_id)
790 .or_default()
791 .connection_ids
792 .insert(connection_id);
793 }
794 }
795
796 fn leave_channel(&mut self, connection_id: ConnectionId, channel_id: ChannelId) {
797 if let Some(connection) = self.connections.get_mut(&connection_id) {
798 connection.channels.remove(&channel_id);
799 if let hash_map::Entry::Occupied(mut entry) = self.channels.entry(channel_id) {
800 entry.get_mut().connection_ids.remove(&connection_id);
801 if entry.get_mut().connection_ids.is_empty() {
802 entry.remove();
803 }
804 }
805 }
806 }
807
808 fn user_id_for_connection(&self, connection_id: ConnectionId) -> tide::Result<UserId> {
809 Ok(self
810 .connections
811 .get(&connection_id)
812 .ok_or_else(|| anyhow!("unknown connection"))?
813 .user_id)
814 }
815
816 // Add the given connection as a guest of the given worktree
817 fn join_worktree(
818 &mut self,
819 connection_id: ConnectionId,
820 worktree_id: u64,
821 access_token: &str,
822 ) -> Option<(ReplicaId, &Worktree)> {
823 if let Some(worktree) = self.worktrees.get_mut(&worktree_id) {
824 if access_token == worktree.access_token {
825 if let Some(connection) = self.connections.get_mut(&connection_id) {
826 connection.worktrees.insert(worktree_id);
827 }
828
829 let mut replica_id = 1;
830 while worktree.active_replica_ids.contains(&replica_id) {
831 replica_id += 1;
832 }
833 worktree.active_replica_ids.insert(replica_id);
834 worktree
835 .guest_connection_ids
836 .insert(connection_id, replica_id);
837 Some((replica_id, worktree))
838 } else {
839 None
840 }
841 } else {
842 None
843 }
844 }
845
846 fn read_worktree(
847 &self,
848 worktree_id: u64,
849 connection_id: ConnectionId,
850 ) -> tide::Result<&Worktree> {
851 let worktree = self
852 .worktrees
853 .get(&worktree_id)
854 .ok_or_else(|| anyhow!("worktree not found"))?;
855
856 if worktree.host_connection_id == Some(connection_id)
857 || worktree.guest_connection_ids.contains_key(&connection_id)
858 {
859 Ok(worktree)
860 } else {
861 Err(anyhow!(
862 "{} is not a member of worktree {}",
863 connection_id,
864 worktree_id
865 ))?
866 }
867 }
868
869 fn write_worktree(
870 &mut self,
871 worktree_id: u64,
872 connection_id: ConnectionId,
873 ) -> tide::Result<&mut Worktree> {
874 let worktree = self
875 .worktrees
876 .get_mut(&worktree_id)
877 .ok_or_else(|| anyhow!("worktree not found"))?;
878
879 if worktree.host_connection_id == Some(connection_id)
880 || worktree.guest_connection_ids.contains_key(&connection_id)
881 {
882 Ok(worktree)
883 } else {
884 Err(anyhow!(
885 "{} is not a member of worktree {}",
886 connection_id,
887 worktree_id
888 ))?
889 }
890 }
891}
892
893impl Worktree {
894 pub fn connection_ids(&self) -> Vec<ConnectionId> {
895 self.guest_connection_ids
896 .keys()
897 .copied()
898 .chain(self.host_connection_id)
899 .collect()
900 }
901
902 fn host_connection_id(&self) -> tide::Result<ConnectionId> {
903 Ok(self
904 .host_connection_id
905 .ok_or_else(|| anyhow!("host disconnected from worktree"))?)
906 }
907}
908
909impl Channel {
910 fn connection_ids(&self) -> Vec<ConnectionId> {
911 self.connection_ids.iter().copied().collect()
912 }
913}
914
915pub fn add_routes(app: &mut tide::Server<Arc<AppState>>, rpc: &Arc<Peer>) {
916 let server = Server::new(app.state().clone(), rpc.clone(), None);
917 app.at("/rpc").with(auth::VerifyToken).get(move |request: Request<Arc<AppState>>| {
918 let user_id = request.ext::<UserId>().copied();
919 let server = server.clone();
920 async move {
921 const WEBSOCKET_GUID: &str = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
922
923 let connection_upgrade = header_contains_ignore_case(&request, CONNECTION, "upgrade");
924 let upgrade_to_websocket = header_contains_ignore_case(&request, UPGRADE, "websocket");
925 let upgrade_requested = connection_upgrade && upgrade_to_websocket;
926
927 if !upgrade_requested {
928 return Ok(Response::new(StatusCode::UpgradeRequired));
929 }
930
931 let header = match request.header("Sec-Websocket-Key") {
932 Some(h) => h.as_str(),
933 None => return Err(anyhow!("expected sec-websocket-key"))?,
934 };
935
936 let mut response = Response::new(StatusCode::SwitchingProtocols);
937 response.insert_header(UPGRADE, "websocket");
938 response.insert_header(CONNECTION, "Upgrade");
939 let hash = Sha1::new().chain(header).chain(WEBSOCKET_GUID).finalize();
940 response.insert_header("Sec-Websocket-Accept", base64::encode(&hash[..]));
941 response.insert_header("Sec-Websocket-Version", "13");
942
943 let http_res: &mut tide::http::Response = response.as_mut();
944 let upgrade_receiver = http_res.recv_upgrade().await;
945 let addr = request.remote().unwrap_or("unknown").to_string();
946 let user_id = user_id.ok_or_else(|| anyhow!("user_id is not present on request. ensure auth::VerifyToken middleware is present"))?;
947 task::spawn(async move {
948 if let Some(stream) = upgrade_receiver.await {
949 let stream = WebSocketStream::from_raw_socket(stream, Role::Server, None).await;
950 server.handle_connection(stream, addr, user_id).await;
951 }
952 });
953
954 Ok(response)
955 }
956 });
957}
958
959fn header_contains_ignore_case<T>(
960 request: &tide::Request<T>,
961 header_name: HeaderName,
962 value: &str,
963) -> bool {
964 request
965 .header(header_name)
966 .map(|h| {
967 h.as_str()
968 .split(',')
969 .any(|s| s.trim().eq_ignore_ascii_case(value.trim()))
970 })
971 .unwrap_or(false)
972}
973
974#[cfg(test)]
975mod tests {
976 use super::*;
977 use crate::{
978 auth,
979 db::{tests::TestDb, UserId},
980 github, AppState, Config,
981 };
982 use async_std::{sync::RwLockReadGuard, task};
983 use gpui::TestAppContext;
984 use postage::mpsc;
985 use serde_json::json;
986 use sqlx::types::time::OffsetDateTime;
987 use std::{path::Path, sync::Arc, time::Duration};
988 use zed::{
989 channel::{Channel, ChannelDetails, ChannelList},
990 editor::{Editor, Insert},
991 fs::{FakeFs, Fs as _},
992 language::LanguageRegistry,
993 rpc::Client,
994 settings, test,
995 user::UserStore,
996 worktree::Worktree,
997 };
998 use zrpc::Peer;
999
1000 #[gpui::test]
1001 async fn test_share_worktree(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1002 let (window_b, _) = cx_b.add_window(|_| EmptyView);
1003 let settings = cx_b.read(settings::test).1;
1004 let lang_registry = Arc::new(LanguageRegistry::new());
1005
1006 // Connect to a server as 2 clients.
1007 let mut server = TestServer::start().await;
1008 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1009 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1010
1011 cx_a.foreground().forbid_parking();
1012
1013 // Share a local worktree as client A
1014 let fs = Arc::new(FakeFs::new());
1015 fs.insert_tree(
1016 "/a",
1017 json!({
1018 "a.txt": "a-contents",
1019 "b.txt": "b-contents",
1020 }),
1021 )
1022 .await;
1023 let worktree_a = Worktree::open_local(
1024 "/a".as_ref(),
1025 lang_registry.clone(),
1026 fs,
1027 &mut cx_a.to_async(),
1028 )
1029 .await
1030 .unwrap();
1031 worktree_a
1032 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1033 .await;
1034 let (worktree_id, worktree_token) = worktree_a
1035 .update(&mut cx_a, |tree, cx| {
1036 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1037 })
1038 .await
1039 .unwrap();
1040
1041 // Join that worktree as client B, and see that a guest has joined as client A.
1042 let worktree_b = Worktree::open_remote(
1043 client_b.clone(),
1044 worktree_id,
1045 worktree_token,
1046 lang_registry.clone(),
1047 &mut cx_b.to_async(),
1048 )
1049 .await
1050 .unwrap();
1051 let replica_id_b = worktree_b.read_with(&cx_b, |tree, _| tree.replica_id());
1052 worktree_a
1053 .condition(&cx_a, |tree, _| {
1054 tree.peers()
1055 .values()
1056 .any(|replica_id| *replica_id == replica_id_b)
1057 })
1058 .await;
1059
1060 // Open the same file as client B and client A.
1061 let buffer_b = worktree_b
1062 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("b.txt", cx))
1063 .await
1064 .unwrap();
1065 buffer_b.read_with(&cx_b, |buf, _| assert_eq!(buf.text(), "b-contents"));
1066 worktree_a.read_with(&cx_a, |tree, cx| assert!(tree.has_open_buffer("b.txt", cx)));
1067 let buffer_a = worktree_a
1068 .update(&mut cx_a, |tree, cx| tree.open_buffer("b.txt", cx))
1069 .await
1070 .unwrap();
1071
1072 // Create a selection set as client B and see that selection set as client A.
1073 let editor_b = cx_b.add_view(window_b, |cx| Editor::for_buffer(buffer_b, settings, cx));
1074 buffer_a
1075 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 1)
1076 .await;
1077
1078 // Edit the buffer as client B and see that edit as client A.
1079 editor_b.update(&mut cx_b, |editor, cx| {
1080 editor.insert(&Insert("ok, ".into()), cx)
1081 });
1082 buffer_a
1083 .condition(&cx_a, |buffer, _| buffer.text() == "ok, b-contents")
1084 .await;
1085
1086 // Remove the selection set as client B, see those selections disappear as client A.
1087 cx_b.update(move |_| drop(editor_b));
1088 buffer_a
1089 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 0)
1090 .await;
1091
1092 // Close the buffer as client A, see that the buffer is closed.
1093 drop(buffer_a);
1094 worktree_a
1095 .condition(&cx_a, |tree, cx| !tree.has_open_buffer("b.txt", cx))
1096 .await;
1097
1098 // Dropping the worktree removes client B from client A's peers.
1099 cx_b.update(move |_| drop(worktree_b));
1100 worktree_a
1101 .condition(&cx_a, |tree, _| tree.peers().is_empty())
1102 .await;
1103 }
1104
1105 #[gpui::test]
1106 async fn test_propagate_saves_and_fs_changes_in_shared_worktree(
1107 mut cx_a: TestAppContext,
1108 mut cx_b: TestAppContext,
1109 mut cx_c: TestAppContext,
1110 ) {
1111 cx_a.foreground().forbid_parking();
1112 let lang_registry = Arc::new(LanguageRegistry::new());
1113
1114 // Connect to a server as 3 clients.
1115 let mut server = TestServer::start().await;
1116 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1117 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1118 let (_, client_c) = server.create_client(&mut cx_c, "user_c").await;
1119
1120 let fs = Arc::new(FakeFs::new());
1121
1122 // Share a worktree as client A.
1123 fs.insert_tree(
1124 "/a",
1125 json!({
1126 "file1": "",
1127 "file2": ""
1128 }),
1129 )
1130 .await;
1131
1132 let worktree_a = Worktree::open_local(
1133 "/a".as_ref(),
1134 lang_registry.clone(),
1135 fs.clone(),
1136 &mut cx_a.to_async(),
1137 )
1138 .await
1139 .unwrap();
1140 worktree_a
1141 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1142 .await;
1143 let (worktree_id, worktree_token) = worktree_a
1144 .update(&mut cx_a, |tree, cx| {
1145 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1146 })
1147 .await
1148 .unwrap();
1149
1150 // Join that worktree as clients B and C.
1151 let worktree_b = Worktree::open_remote(
1152 client_b.clone(),
1153 worktree_id,
1154 worktree_token.clone(),
1155 lang_registry.clone(),
1156 &mut cx_b.to_async(),
1157 )
1158 .await
1159 .unwrap();
1160 let worktree_c = Worktree::open_remote(
1161 client_c.clone(),
1162 worktree_id,
1163 worktree_token,
1164 lang_registry.clone(),
1165 &mut cx_c.to_async(),
1166 )
1167 .await
1168 .unwrap();
1169
1170 // Open and edit a buffer as both guests B and C.
1171 let buffer_b = worktree_b
1172 .update(&mut cx_b, |tree, cx| tree.open_buffer("file1", cx))
1173 .await
1174 .unwrap();
1175 let buffer_c = worktree_c
1176 .update(&mut cx_c, |tree, cx| tree.open_buffer("file1", cx))
1177 .await
1178 .unwrap();
1179 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "i-am-b, ", cx));
1180 buffer_c.update(&mut cx_c, |buf, cx| buf.edit([0..0], "i-am-c, ", cx));
1181
1182 // Open and edit that buffer as the host.
1183 let buffer_a = worktree_a
1184 .update(&mut cx_a, |tree, cx| tree.open_buffer("file1", cx))
1185 .await
1186 .unwrap();
1187
1188 buffer_a
1189 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, ")
1190 .await;
1191 buffer_a.update(&mut cx_a, |buf, cx| {
1192 buf.edit([buf.len()..buf.len()], "i-am-a", cx)
1193 });
1194
1195 // Wait for edits to propagate
1196 buffer_a
1197 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1198 .await;
1199 buffer_b
1200 .condition(&mut cx_b, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1201 .await;
1202 buffer_c
1203 .condition(&mut cx_c, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1204 .await;
1205
1206 // Edit the buffer as the host and concurrently save as guest B.
1207 let save_b = buffer_b.update(&mut cx_b, |buf, cx| buf.save(cx).unwrap());
1208 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "hi-a, ", cx));
1209 save_b.await.unwrap();
1210 assert_eq!(
1211 fs.load("/a/file1".as_ref()).await.unwrap(),
1212 "hi-a, i-am-c, i-am-b, i-am-a"
1213 );
1214 buffer_a.read_with(&cx_a, |buf, _| assert!(!buf.is_dirty()));
1215 buffer_b.read_with(&cx_b, |buf, _| assert!(!buf.is_dirty()));
1216 buffer_c.condition(&cx_c, |buf, _| !buf.is_dirty()).await;
1217
1218 // Make changes on host's file system, see those changes on the guests.
1219 fs.rename("/a/file2".as_ref(), "/a/file3".as_ref())
1220 .await
1221 .unwrap();
1222 fs.insert_file(Path::new("/a/file4"), "4".into())
1223 .await
1224 .unwrap();
1225
1226 worktree_b
1227 .condition(&cx_b, |tree, _| tree.file_count() == 3)
1228 .await;
1229 worktree_c
1230 .condition(&cx_c, |tree, _| tree.file_count() == 3)
1231 .await;
1232 worktree_b.read_with(&cx_b, |tree, _| {
1233 assert_eq!(
1234 tree.paths()
1235 .map(|p| p.to_string_lossy())
1236 .collect::<Vec<_>>(),
1237 &["file1", "file3", "file4"]
1238 )
1239 });
1240 worktree_c.read_with(&cx_c, |tree, _| {
1241 assert_eq!(
1242 tree.paths()
1243 .map(|p| p.to_string_lossy())
1244 .collect::<Vec<_>>(),
1245 &["file1", "file3", "file4"]
1246 )
1247 });
1248 }
1249
1250 #[gpui::test]
1251 async fn test_buffer_conflict_after_save(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1252 cx_a.foreground().forbid_parking();
1253 let lang_registry = Arc::new(LanguageRegistry::new());
1254
1255 // Connect to a server as 2 clients.
1256 let mut server = TestServer::start().await;
1257 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1258 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1259
1260 // Share a local worktree as client A
1261 let fs = Arc::new(FakeFs::new());
1262 fs.save(Path::new("/a.txt"), &"a-contents".into())
1263 .await
1264 .unwrap();
1265 let worktree_a = Worktree::open_local(
1266 "/".as_ref(),
1267 lang_registry.clone(),
1268 fs,
1269 &mut cx_a.to_async(),
1270 )
1271 .await
1272 .unwrap();
1273 worktree_a
1274 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1275 .await;
1276 let (worktree_id, worktree_token) = worktree_a
1277 .update(&mut cx_a, |tree, cx| {
1278 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1279 })
1280 .await
1281 .unwrap();
1282
1283 // Join that worktree as client B, and see that a guest has joined as client A.
1284 let worktree_b = Worktree::open_remote(
1285 client_b.clone(),
1286 worktree_id,
1287 worktree_token,
1288 lang_registry.clone(),
1289 &mut cx_b.to_async(),
1290 )
1291 .await
1292 .unwrap();
1293
1294 let buffer_b = worktree_b
1295 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx))
1296 .await
1297 .unwrap();
1298 let mtime = buffer_b.read_with(&cx_b, |buf, _| buf.file().unwrap().mtime);
1299
1300 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "world ", cx));
1301 buffer_b.read_with(&cx_b, |buf, _| {
1302 assert!(buf.is_dirty());
1303 assert!(!buf.has_conflict());
1304 });
1305
1306 buffer_b
1307 .update(&mut cx_b, |buf, cx| buf.save(cx))
1308 .unwrap()
1309 .await
1310 .unwrap();
1311 worktree_b
1312 .condition(&cx_b, |_, cx| {
1313 buffer_b.read(cx).file().unwrap().mtime != mtime
1314 })
1315 .await;
1316 buffer_b.read_with(&cx_b, |buf, _| {
1317 assert!(!buf.is_dirty());
1318 assert!(!buf.has_conflict());
1319 });
1320
1321 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "hello ", cx));
1322 buffer_b.read_with(&cx_b, |buf, _| {
1323 assert!(buf.is_dirty());
1324 assert!(!buf.has_conflict());
1325 });
1326 }
1327
1328 #[gpui::test]
1329 async fn test_editing_while_guest_opens_buffer(
1330 mut cx_a: TestAppContext,
1331 mut cx_b: TestAppContext,
1332 ) {
1333 cx_a.foreground().forbid_parking();
1334 let lang_registry = Arc::new(LanguageRegistry::new());
1335
1336 // Connect to a server as 2 clients.
1337 let mut server = TestServer::start().await;
1338 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1339 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1340
1341 // Share a local worktree as client A
1342 let fs = Arc::new(FakeFs::new());
1343 fs.save(Path::new("/a.txt"), &"a-contents".into())
1344 .await
1345 .unwrap();
1346 let worktree_a = Worktree::open_local(
1347 "/".as_ref(),
1348 lang_registry.clone(),
1349 fs,
1350 &mut cx_a.to_async(),
1351 )
1352 .await
1353 .unwrap();
1354 worktree_a
1355 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1356 .await;
1357 let (worktree_id, worktree_token) = worktree_a
1358 .update(&mut cx_a, |tree, cx| {
1359 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1360 })
1361 .await
1362 .unwrap();
1363
1364 // Join that worktree as client B, and see that a guest has joined as client A.
1365 let worktree_b = Worktree::open_remote(
1366 client_b.clone(),
1367 worktree_id,
1368 worktree_token,
1369 lang_registry.clone(),
1370 &mut cx_b.to_async(),
1371 )
1372 .await
1373 .unwrap();
1374
1375 let buffer_a = worktree_a
1376 .update(&mut cx_a, |tree, cx| tree.open_buffer("a.txt", cx))
1377 .await
1378 .unwrap();
1379 let buffer_b = cx_b
1380 .background()
1381 .spawn(worktree_b.update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx)));
1382
1383 task::yield_now().await;
1384 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "z", cx));
1385
1386 let text = buffer_a.read_with(&cx_a, |buf, _| buf.text());
1387 let buffer_b = buffer_b.await.unwrap();
1388 buffer_b.condition(&cx_b, |buf, _| buf.text() == text).await;
1389 }
1390
1391 #[gpui::test]
1392 async fn test_peer_disconnection(mut cx_a: TestAppContext, cx_b: TestAppContext) {
1393 cx_a.foreground().forbid_parking();
1394 let lang_registry = Arc::new(LanguageRegistry::new());
1395
1396 // Connect to a server as 2 clients.
1397 let mut server = TestServer::start().await;
1398 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1399 let (_, client_b) = server.create_client(&mut cx_a, "user_b").await;
1400
1401 // Share a local worktree as client A
1402 let fs = Arc::new(FakeFs::new());
1403 fs.insert_tree(
1404 "/a",
1405 json!({
1406 "a.txt": "a-contents",
1407 "b.txt": "b-contents",
1408 }),
1409 )
1410 .await;
1411 let worktree_a = Worktree::open_local(
1412 "/a".as_ref(),
1413 lang_registry.clone(),
1414 fs,
1415 &mut cx_a.to_async(),
1416 )
1417 .await
1418 .unwrap();
1419 worktree_a
1420 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1421 .await;
1422 let (worktree_id, worktree_token) = worktree_a
1423 .update(&mut cx_a, |tree, cx| {
1424 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1425 })
1426 .await
1427 .unwrap();
1428
1429 // Join that worktree as client B, and see that a guest has joined as client A.
1430 let _worktree_b = Worktree::open_remote(
1431 client_b.clone(),
1432 worktree_id,
1433 worktree_token,
1434 lang_registry.clone(),
1435 &mut cx_b.to_async(),
1436 )
1437 .await
1438 .unwrap();
1439 worktree_a
1440 .condition(&cx_a, |tree, _| tree.peers().len() == 1)
1441 .await;
1442
1443 // Drop client B's connection and ensure client A observes client B leaving the worktree.
1444 client_b.disconnect().await.unwrap();
1445 worktree_a
1446 .condition(&cx_a, |tree, _| tree.peers().len() == 0)
1447 .await;
1448 }
1449
1450 #[gpui::test]
1451 async fn test_basic_chat(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1452 cx_a.foreground().forbid_parking();
1453
1454 // Connect to a server as 2 clients.
1455 let mut server = TestServer::start().await;
1456 let (user_id_a, client_a) = server.create_client(&mut cx_a, "user_a").await;
1457 let (user_id_b, client_b) = server.create_client(&mut cx_b, "user_b").await;
1458
1459 // Create an org that includes these 2 users.
1460 let db = &server.app_state.db;
1461 let org_id = db.create_org("Test Org", "test-org").await.unwrap();
1462 db.add_org_member(org_id, user_id_a, false).await.unwrap();
1463 db.add_org_member(org_id, user_id_b, false).await.unwrap();
1464
1465 // Create a channel that includes all the users.
1466 let channel_id = db.create_org_channel(org_id, "test-channel").await.unwrap();
1467 db.add_channel_member(channel_id, user_id_a, false)
1468 .await
1469 .unwrap();
1470 db.add_channel_member(channel_id, user_id_b, false)
1471 .await
1472 .unwrap();
1473 db.create_channel_message(
1474 channel_id,
1475 user_id_b,
1476 "hello A, it's B.",
1477 OffsetDateTime::now_utc(),
1478 )
1479 .await
1480 .unwrap();
1481
1482 let user_store_a = Arc::new(UserStore::new(client_a.clone()));
1483 let channels_a = cx_a.add_model(|cx| ChannelList::new(user_store_a, client_a, cx));
1484 channels_a
1485 .condition(&mut cx_a, |list, _| list.available_channels().is_some())
1486 .await;
1487 channels_a.read_with(&cx_a, |list, _| {
1488 assert_eq!(
1489 list.available_channels().unwrap(),
1490 &[ChannelDetails {
1491 id: channel_id.to_proto(),
1492 name: "test-channel".to_string()
1493 }]
1494 )
1495 });
1496 let channel_a = channels_a.update(&mut cx_a, |this, cx| {
1497 this.get_channel(channel_id.to_proto(), cx).unwrap()
1498 });
1499 channel_a.read_with(&cx_a, |channel, _| assert!(channel.messages().is_empty()));
1500 channel_a
1501 .condition(&cx_a, |channel, _| {
1502 channel_messages(channel)
1503 == [("user_b".to_string(), "hello A, it's B.".to_string())]
1504 })
1505 .await;
1506
1507 let user_store_b = Arc::new(UserStore::new(client_b.clone()));
1508 let channels_b = cx_b.add_model(|cx| ChannelList::new(user_store_b, client_b, cx));
1509 channels_b
1510 .condition(&mut cx_b, |list, _| list.available_channels().is_some())
1511 .await;
1512 channels_b.read_with(&cx_b, |list, _| {
1513 assert_eq!(
1514 list.available_channels().unwrap(),
1515 &[ChannelDetails {
1516 id: channel_id.to_proto(),
1517 name: "test-channel".to_string()
1518 }]
1519 )
1520 });
1521
1522 let channel_b = channels_b.update(&mut cx_b, |this, cx| {
1523 this.get_channel(channel_id.to_proto(), cx).unwrap()
1524 });
1525 channel_b.read_with(&cx_b, |channel, _| assert!(channel.messages().is_empty()));
1526 channel_b
1527 .condition(&cx_b, |channel, _| {
1528 channel_messages(channel)
1529 == [("user_b".to_string(), "hello A, it's B.".to_string())]
1530 })
1531 .await;
1532
1533 channel_a.update(&mut cx_a, |channel, cx| {
1534 channel.send_message("oh, hi B.".to_string(), cx).unwrap();
1535 channel.send_message("sup".to_string(), cx).unwrap();
1536 assert_eq!(
1537 channel
1538 .pending_messages()
1539 .iter()
1540 .map(|m| &m.body)
1541 .collect::<Vec<_>>(),
1542 &["oh, hi B.", "sup"]
1543 )
1544 });
1545
1546 channel_a
1547 .condition(&cx_a, |channel, _| channel.pending_messages().is_empty())
1548 .await;
1549 channel_b
1550 .condition(&cx_b, |channel, _| {
1551 channel_messages(channel)
1552 == [
1553 ("user_b".to_string(), "hello A, it's B.".to_string()),
1554 ("user_a".to_string(), "oh, hi B.".to_string()),
1555 ("user_a".to_string(), "sup".to_string()),
1556 ]
1557 })
1558 .await;
1559
1560 assert_eq!(
1561 server.state().await.channels[&channel_id]
1562 .connection_ids
1563 .len(),
1564 2
1565 );
1566 cx_b.update(|_| drop(channel_b));
1567 server
1568 .condition(|state| state.channels[&channel_id].connection_ids.len() == 1)
1569 .await;
1570
1571 cx_a.update(|_| drop(channel_a));
1572 server
1573 .condition(|state| !state.channels.contains_key(&channel_id))
1574 .await;
1575
1576 fn channel_messages(channel: &Channel) -> Vec<(String, String)> {
1577 channel
1578 .messages()
1579 .cursor::<(), ()>()
1580 .map(|m| (m.sender.github_login.clone(), m.body.clone()))
1581 .collect()
1582 }
1583 }
1584
1585 struct TestServer {
1586 peer: Arc<Peer>,
1587 app_state: Arc<AppState>,
1588 server: Arc<Server>,
1589 notifications: mpsc::Receiver<()>,
1590 _test_db: TestDb,
1591 }
1592
1593 impl TestServer {
1594 async fn start() -> Self {
1595 let test_db = TestDb::new();
1596 let app_state = Self::build_app_state(&test_db).await;
1597 let peer = Peer::new();
1598 let notifications = mpsc::channel(128);
1599 let server = Server::new(app_state.clone(), peer.clone(), Some(notifications.0));
1600 Self {
1601 peer,
1602 app_state,
1603 server,
1604 notifications: notifications.1,
1605 _test_db: test_db,
1606 }
1607 }
1608
1609 async fn create_client(
1610 &mut self,
1611 cx: &mut TestAppContext,
1612 name: &str,
1613 ) -> (UserId, Arc<Client>) {
1614 let user_id = self.app_state.db.create_user(name, false).await.unwrap();
1615 let client = Client::new();
1616 let (client_conn, server_conn) = test::Channel::bidirectional();
1617 cx.background()
1618 .spawn(
1619 self.server
1620 .handle_connection(server_conn, name.to_string(), user_id),
1621 )
1622 .detach();
1623 client
1624 .add_connection(user_id.to_proto(), client_conn, cx.to_async())
1625 .await
1626 .unwrap();
1627 (user_id, client)
1628 }
1629
1630 async fn build_app_state(test_db: &TestDb) -> Arc<AppState> {
1631 let mut config = Config::default();
1632 config.session_secret = "a".repeat(32);
1633 config.database_url = test_db.url.clone();
1634 let github_client = github::AppClient::test();
1635 Arc::new(AppState {
1636 db: test_db.db().clone(),
1637 handlebars: Default::default(),
1638 auth_client: auth::build_client("", ""),
1639 repo_client: github::RepoClient::test(&github_client),
1640 github_client,
1641 config,
1642 })
1643 }
1644
1645 async fn state<'a>(&'a self) -> RwLockReadGuard<'a, ServerState> {
1646 self.server.state.read().await
1647 }
1648
1649 async fn condition<F>(&mut self, mut predicate: F)
1650 where
1651 F: FnMut(&ServerState) -> bool,
1652 {
1653 async_std::future::timeout(Duration::from_millis(500), async {
1654 while !(predicate)(&*self.server.state.read().await) {
1655 self.notifications.recv().await;
1656 }
1657 })
1658 .await
1659 .expect("condition timed out");
1660 }
1661 }
1662
1663 impl Drop for TestServer {
1664 fn drop(&mut self) {
1665 task::block_on(self.peer.reset());
1666 }
1667 }
1668
1669 struct EmptyView;
1670
1671 impl gpui::Entity for EmptyView {
1672 type Event = ();
1673 }
1674
1675 impl gpui::View for EmptyView {
1676 fn ui_name() -> &'static str {
1677 "empty view"
1678 }
1679
1680 fn render(&self, _: &mut gpui::RenderContext<Self>) -> gpui::ElementBox {
1681 gpui::Element::boxed(gpui::elements::Empty)
1682 }
1683 }
1684}