1use super::{
2 auth,
3 db::{ChannelId, 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
80impl Server {
81 pub fn new(
82 app_state: Arc<AppState>,
83 peer: Arc<Peer>,
84 notifications: Option<mpsc::Sender<()>>,
85 ) -> Arc<Self> {
86 let mut server = Self {
87 peer,
88 app_state,
89 state: Default::default(),
90 handlers: Default::default(),
91 notifications,
92 };
93
94 server
95 .add_handler(Server::share_worktree)
96 .add_handler(Server::join_worktree)
97 .add_handler(Server::update_worktree)
98 .add_handler(Server::close_worktree)
99 .add_handler(Server::open_buffer)
100 .add_handler(Server::close_buffer)
101 .add_handler(Server::update_buffer)
102 .add_handler(Server::buffer_saved)
103 .add_handler(Server::save_buffer)
104 .add_handler(Server::get_channels)
105 .add_handler(Server::get_users)
106 .add_handler(Server::join_channel)
107 .add_handler(Server::leave_channel)
108 .add_handler(Server::send_channel_message);
109
110 Arc::new(server)
111 }
112
113 fn add_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
114 where
115 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
116 Fut: 'static + Send + Future<Output = tide::Result<()>>,
117 M: EnvelopedMessage,
118 {
119 let prev_handler = self.handlers.insert(
120 TypeId::of::<M>(),
121 Box::new(move |server, envelope| {
122 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
123 (handler)(server, *envelope).boxed()
124 }),
125 );
126 if prev_handler.is_some() {
127 panic!("registered a handler for the same message twice");
128 }
129 self
130 }
131
132 pub fn handle_connection<Conn>(
133 self: &Arc<Self>,
134 connection: Conn,
135 addr: String,
136 user_id: UserId,
137 ) -> impl Future<Output = ()>
138 where
139 Conn: 'static
140 + futures::Sink<WebSocketMessage, Error = WebSocketError>
141 + futures::Stream<Item = Result<WebSocketMessage, WebSocketError>>
142 + Send
143 + Unpin,
144 {
145 let this = self.clone();
146 async move {
147 let (connection_id, handle_io, mut incoming_rx) =
148 this.peer.add_connection(connection).await;
149 this.add_connection(connection_id, user_id).await;
150
151 let handle_io = handle_io.fuse();
152 futures::pin_mut!(handle_io);
153 loop {
154 let next_message = incoming_rx.recv().fuse();
155 futures::pin_mut!(next_message);
156 futures::select_biased! {
157 message = next_message => {
158 if let Some(message) = message {
159 let start_time = Instant::now();
160 log::info!("RPC message received: {}", message.payload_type_name());
161 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
162 if let Err(err) = (handler)(this.clone(), message).await {
163 log::error!("error handling message: {:?}", err);
164 } else {
165 log::info!("RPC message handled. duration:{:?}", start_time.elapsed());
166 }
167
168 if let Some(mut notifications) = this.notifications.clone() {
169 let _ = notifications.send(()).await;
170 }
171 } else {
172 log::warn!("unhandled message: {}", message.payload_type_name());
173 }
174 } else {
175 log::info!("rpc connection closed {:?}", addr);
176 break;
177 }
178 }
179 handle_io = handle_io => {
180 if let Err(err) = handle_io {
181 log::error!("error handling rpc connection {:?} - {:?}", addr, err);
182 }
183 break;
184 }
185 }
186 }
187
188 if let Err(err) = this.sign_out(connection_id).await {
189 log::error!("error signing out connection {:?} - {:?}", addr, err);
190 }
191 }
192 }
193
194 async fn sign_out(self: &Arc<Self>, connection_id: zrpc::ConnectionId) -> tide::Result<()> {
195 self.peer.disconnect(connection_id).await;
196 let worktree_ids = self.remove_connection(connection_id).await;
197 for worktree_id in worktree_ids {
198 let state = self.state.read().await;
199 if let Some(worktree) = state.worktrees.get(&worktree_id) {
200 broadcast(connection_id, worktree.connection_ids(), |conn_id| {
201 self.peer.send(
202 conn_id,
203 proto::RemovePeer {
204 worktree_id,
205 peer_id: connection_id.0,
206 },
207 )
208 })
209 .await?;
210 }
211 }
212 Ok(())
213 }
214
215 // Add a new connection associated with a given user.
216 async fn add_connection(&self, connection_id: ConnectionId, user_id: UserId) {
217 self.state.write().await.connections.insert(
218 connection_id,
219 Connection {
220 user_id,
221 worktrees: Default::default(),
222 channels: Default::default(),
223 },
224 );
225 }
226
227 // Remove the given connection and its association with any worktrees.
228 async fn remove_connection(&self, connection_id: ConnectionId) -> Vec<u64> {
229 let mut worktree_ids = Vec::new();
230 let mut state = self.state.write().await;
231 if let Some(connection) = state.connections.remove(&connection_id) {
232 for channel_id in connection.channels {
233 if let Some(channel) = state.channels.get_mut(&channel_id) {
234 channel.connection_ids.remove(&connection_id);
235 }
236 }
237 for worktree_id in connection.worktrees {
238 if let Some(worktree) = state.worktrees.get_mut(&worktree_id) {
239 if worktree.host_connection_id == Some(connection_id) {
240 worktree_ids.push(worktree_id);
241 } else if let Some(replica_id) =
242 worktree.guest_connection_ids.remove(&connection_id)
243 {
244 worktree.active_replica_ids.remove(&replica_id);
245 worktree_ids.push(worktree_id);
246 }
247 }
248 }
249 }
250 worktree_ids
251 }
252
253 async fn share_worktree(
254 self: Arc<Server>,
255 mut request: TypedEnvelope<proto::ShareWorktree>,
256 ) -> tide::Result<()> {
257 let mut state = self.state.write().await;
258 let worktree_id = state.next_worktree_id;
259 state.next_worktree_id += 1;
260 let access_token = random_token();
261 let worktree = request
262 .payload
263 .worktree
264 .as_mut()
265 .ok_or_else(|| anyhow!("missing worktree"))?;
266 let entries = mem::take(&mut worktree.entries)
267 .into_iter()
268 .map(|entry| (entry.id, entry))
269 .collect();
270 state.worktrees.insert(
271 worktree_id,
272 Worktree {
273 host_connection_id: Some(request.sender_id),
274 guest_connection_ids: Default::default(),
275 active_replica_ids: Default::default(),
276 access_token: access_token.clone(),
277 root_name: mem::take(&mut worktree.root_name),
278 entries,
279 },
280 );
281
282 self.peer
283 .respond(
284 request.receipt(),
285 proto::ShareWorktreeResponse {
286 worktree_id,
287 access_token,
288 },
289 )
290 .await?;
291 Ok(())
292 }
293
294 async fn join_worktree(
295 self: Arc<Server>,
296 request: TypedEnvelope<proto::OpenWorktree>,
297 ) -> tide::Result<()> {
298 let worktree_id = request.payload.worktree_id;
299 let access_token = &request.payload.access_token;
300
301 let mut state = self.state.write().await;
302 if let Some((peer_replica_id, worktree)) =
303 state.join_worktree(request.sender_id, worktree_id, access_token)
304 {
305 let mut peers = Vec::new();
306 if let Some(host_connection_id) = worktree.host_connection_id {
307 peers.push(proto::Peer {
308 peer_id: host_connection_id.0,
309 replica_id: 0,
310 });
311 }
312 for (peer_conn_id, peer_replica_id) in &worktree.guest_connection_ids {
313 if *peer_conn_id != request.sender_id {
314 peers.push(proto::Peer {
315 peer_id: peer_conn_id.0,
316 replica_id: *peer_replica_id as u32,
317 });
318 }
319 }
320
321 broadcast(request.sender_id, worktree.connection_ids(), |conn_id| {
322 self.peer.send(
323 conn_id,
324 proto::AddPeer {
325 worktree_id,
326 peer: Some(proto::Peer {
327 peer_id: request.sender_id.0,
328 replica_id: peer_replica_id as u32,
329 }),
330 },
331 )
332 })
333 .await?;
334 self.peer
335 .respond(
336 request.receipt(),
337 proto::OpenWorktreeResponse {
338 worktree_id,
339 worktree: Some(proto::Worktree {
340 root_name: worktree.root_name.clone(),
341 entries: worktree.entries.values().cloned().collect(),
342 }),
343 replica_id: peer_replica_id as u32,
344 peers,
345 },
346 )
347 .await?;
348 } else {
349 self.peer
350 .respond(
351 request.receipt(),
352 proto::OpenWorktreeResponse {
353 worktree_id,
354 worktree: None,
355 replica_id: 0,
356 peers: Vec::new(),
357 },
358 )
359 .await?;
360 }
361
362 Ok(())
363 }
364
365 async fn update_worktree(
366 self: Arc<Server>,
367 request: TypedEnvelope<proto::UpdateWorktree>,
368 ) -> tide::Result<()> {
369 {
370 let mut state = self.state.write().await;
371 let worktree = state.write_worktree(request.payload.worktree_id, request.sender_id)?;
372 for entry_id in &request.payload.removed_entries {
373 worktree.entries.remove(&entry_id);
374 }
375
376 for entry in &request.payload.updated_entries {
377 worktree.entries.insert(entry.id, entry.clone());
378 }
379 }
380
381 self.broadcast_in_worktree(request.payload.worktree_id, &request)
382 .await?;
383 Ok(())
384 }
385
386 async fn close_worktree(
387 self: Arc<Server>,
388 request: TypedEnvelope<proto::CloseWorktree>,
389 ) -> tide::Result<()> {
390 let connection_ids;
391 {
392 let mut state = self.state.write().await;
393 let worktree = state.write_worktree(request.payload.worktree_id, request.sender_id)?;
394 connection_ids = worktree.connection_ids();
395 if worktree.host_connection_id == Some(request.sender_id) {
396 worktree.host_connection_id = None;
397 } else if let Some(replica_id) =
398 worktree.guest_connection_ids.remove(&request.sender_id)
399 {
400 worktree.active_replica_ids.remove(&replica_id);
401 }
402 }
403
404 broadcast(request.sender_id, connection_ids, |conn_id| {
405 self.peer.send(
406 conn_id,
407 proto::RemovePeer {
408 worktree_id: request.payload.worktree_id,
409 peer_id: request.sender_id.0,
410 },
411 )
412 })
413 .await?;
414
415 Ok(())
416 }
417
418 async fn open_buffer(
419 self: Arc<Server>,
420 request: TypedEnvelope<proto::OpenBuffer>,
421 ) -> tide::Result<()> {
422 let receipt = request.receipt();
423 let worktree_id = request.payload.worktree_id;
424 let host_connection_id = self
425 .state
426 .read()
427 .await
428 .read_worktree(worktree_id, request.sender_id)?
429 .host_connection_id()?;
430
431 let response = self
432 .peer
433 .forward_request(request.sender_id, host_connection_id, request.payload)
434 .await?;
435 self.peer.respond(receipt, response).await?;
436 Ok(())
437 }
438
439 async fn close_buffer(
440 self: Arc<Server>,
441 request: TypedEnvelope<proto::CloseBuffer>,
442 ) -> tide::Result<()> {
443 let host_connection_id = self
444 .state
445 .read()
446 .await
447 .read_worktree(request.payload.worktree_id, request.sender_id)?
448 .host_connection_id()?;
449
450 self.peer
451 .forward_send(request.sender_id, host_connection_id, request.payload)
452 .await?;
453
454 Ok(())
455 }
456
457 async fn save_buffer(
458 self: Arc<Server>,
459 request: TypedEnvelope<proto::SaveBuffer>,
460 ) -> tide::Result<()> {
461 let host;
462 let guests;
463 {
464 let state = self.state.read().await;
465 let worktree = state.read_worktree(request.payload.worktree_id, request.sender_id)?;
466 host = worktree.host_connection_id()?;
467 guests = worktree
468 .guest_connection_ids
469 .keys()
470 .copied()
471 .collect::<Vec<_>>();
472 }
473
474 let sender = request.sender_id;
475 let receipt = request.receipt();
476 let response = self
477 .peer
478 .forward_request(sender, host, request.payload.clone())
479 .await?;
480
481 broadcast(host, guests, |conn_id| {
482 let response = response.clone();
483 let peer = &self.peer;
484 async move {
485 if conn_id == sender {
486 peer.respond(receipt, response).await
487 } else {
488 peer.forward_send(host, conn_id, response).await
489 }
490 }
491 })
492 .await?;
493
494 Ok(())
495 }
496
497 async fn update_buffer(
498 self: Arc<Server>,
499 request: TypedEnvelope<proto::UpdateBuffer>,
500 ) -> tide::Result<()> {
501 self.broadcast_in_worktree(request.payload.worktree_id, &request)
502 .await
503 }
504
505 async fn buffer_saved(
506 self: Arc<Server>,
507 request: TypedEnvelope<proto::BufferSaved>,
508 ) -> tide::Result<()> {
509 self.broadcast_in_worktree(request.payload.worktree_id, &request)
510 .await
511 }
512
513 async fn get_channels(
514 self: Arc<Server>,
515 request: TypedEnvelope<proto::GetChannels>,
516 ) -> tide::Result<()> {
517 let user_id = self
518 .state
519 .read()
520 .await
521 .user_id_for_connection(request.sender_id)?;
522 let channels = self.app_state.db.get_channels_for_user(user_id).await?;
523 self.peer
524 .respond(
525 request.receipt(),
526 proto::GetChannelsResponse {
527 channels: channels
528 .into_iter()
529 .map(|chan| proto::Channel {
530 id: chan.id.to_proto(),
531 name: chan.name,
532 })
533 .collect(),
534 },
535 )
536 .await?;
537 Ok(())
538 }
539
540 async fn get_users(
541 self: Arc<Server>,
542 request: TypedEnvelope<proto::GetUsers>,
543 ) -> tide::Result<()> {
544 let user_id = self
545 .state
546 .read()
547 .await
548 .user_id_for_connection(request.sender_id)?;
549 let receipt = request.receipt();
550 let user_ids = request.payload.user_ids.into_iter().map(UserId::from_proto);
551 let users = self
552 .app_state
553 .db
554 .get_users_by_ids(user_id, user_ids)
555 .await?
556 .into_iter()
557 .map(|user| proto::User {
558 id: user.id.to_proto(),
559 github_login: user.github_login,
560 avatar_url: String::new(),
561 })
562 .collect();
563 self.peer
564 .respond(receipt, proto::GetUsersResponse { users })
565 .await?;
566 Ok(())
567 }
568
569 async fn join_channel(
570 self: Arc<Self>,
571 request: TypedEnvelope<proto::JoinChannel>,
572 ) -> tide::Result<()> {
573 let user_id = self
574 .state
575 .read()
576 .await
577 .user_id_for_connection(request.sender_id)?;
578 let channel_id = ChannelId::from_proto(request.payload.channel_id);
579 if !self
580 .app_state
581 .db
582 .can_user_access_channel(user_id, channel_id)
583 .await?
584 {
585 Err(anyhow!("access denied"))?;
586 }
587
588 self.state
589 .write()
590 .await
591 .join_channel(request.sender_id, channel_id);
592 let messages = self
593 .app_state
594 .db
595 .get_recent_channel_messages(channel_id, 50)
596 .await?
597 .into_iter()
598 .map(|msg| proto::ChannelMessage {
599 id: msg.id.to_proto(),
600 body: msg.body,
601 timestamp: msg.sent_at.unix_timestamp() as u64,
602 sender_id: msg.sender_id.to_proto(),
603 })
604 .collect();
605 self.peer
606 .respond(request.receipt(), proto::JoinChannelResponse { messages })
607 .await?;
608 Ok(())
609 }
610
611 async fn leave_channel(
612 self: Arc<Self>,
613 request: TypedEnvelope<proto::LeaveChannel>,
614 ) -> tide::Result<()> {
615 let user_id = self
616 .state
617 .read()
618 .await
619 .user_id_for_connection(request.sender_id)?;
620 let channel_id = ChannelId::from_proto(request.payload.channel_id);
621 if !self
622 .app_state
623 .db
624 .can_user_access_channel(user_id, channel_id)
625 .await?
626 {
627 Err(anyhow!("access denied"))?;
628 }
629
630 self.state
631 .write()
632 .await
633 .leave_channel(request.sender_id, channel_id);
634
635 Ok(())
636 }
637
638 async fn send_channel_message(
639 self: Arc<Self>,
640 request: TypedEnvelope<proto::SendChannelMessage>,
641 ) -> tide::Result<()> {
642 let channel_id = ChannelId::from_proto(request.payload.channel_id);
643 let user_id;
644 let connection_ids;
645 {
646 let state = self.state.read().await;
647 user_id = state.user_id_for_connection(request.sender_id)?;
648 if let Some(channel) = state.channels.get(&channel_id) {
649 connection_ids = channel.connection_ids();
650 } else {
651 return Ok(());
652 }
653 }
654
655 let timestamp = OffsetDateTime::now_utc();
656 let message_id = self
657 .app_state
658 .db
659 .create_channel_message(channel_id, user_id, &request.payload.body, timestamp)
660 .await?
661 .to_proto();
662 let receipt = request.receipt();
663 let message = proto::ChannelMessageSent {
664 channel_id: channel_id.to_proto(),
665 message: Some(proto::ChannelMessage {
666 sender_id: user_id.to_proto(),
667 id: message_id,
668 body: request.payload.body,
669 timestamp: timestamp.unix_timestamp() as u64,
670 }),
671 };
672 broadcast(request.sender_id, connection_ids, |conn_id| {
673 self.peer.send(conn_id, message.clone())
674 })
675 .await?;
676 self.peer
677 .respond(
678 receipt,
679 proto::SendChannelMessageResponse {
680 message_id,
681 timestamp: timestamp.unix_timestamp() as u64,
682 },
683 )
684 .await?;
685 Ok(())
686 }
687
688 async fn broadcast_in_worktree<T: proto::EnvelopedMessage>(
689 &self,
690 worktree_id: u64,
691 message: &TypedEnvelope<T>,
692 ) -> tide::Result<()> {
693 let connection_ids = self
694 .state
695 .read()
696 .await
697 .read_worktree(worktree_id, message.sender_id)?
698 .connection_ids();
699
700 broadcast(message.sender_id, connection_ids, |conn_id| {
701 self.peer
702 .forward_send(message.sender_id, conn_id, message.payload.clone())
703 })
704 .await?;
705
706 Ok(())
707 }
708}
709
710pub async fn broadcast<F, T>(
711 sender_id: ConnectionId,
712 receiver_ids: Vec<ConnectionId>,
713 mut f: F,
714) -> anyhow::Result<()>
715where
716 F: FnMut(ConnectionId) -> T,
717 T: Future<Output = anyhow::Result<()>>,
718{
719 let futures = receiver_ids
720 .into_iter()
721 .filter(|id| *id != sender_id)
722 .map(|id| f(id));
723 futures::future::try_join_all(futures).await?;
724 Ok(())
725}
726
727impl ServerState {
728 fn join_channel(&mut self, connection_id: ConnectionId, channel_id: ChannelId) {
729 if let Some(connection) = self.connections.get_mut(&connection_id) {
730 connection.channels.insert(channel_id);
731 self.channels
732 .entry(channel_id)
733 .or_default()
734 .connection_ids
735 .insert(connection_id);
736 }
737 }
738
739 fn leave_channel(&mut self, connection_id: ConnectionId, channel_id: ChannelId) {
740 if let Some(connection) = self.connections.get_mut(&connection_id) {
741 connection.channels.remove(&channel_id);
742 if let hash_map::Entry::Occupied(mut entry) = self.channels.entry(channel_id) {
743 entry.get_mut().connection_ids.remove(&connection_id);
744 if entry.get_mut().connection_ids.is_empty() {
745 entry.remove();
746 }
747 }
748 }
749 }
750
751 fn user_id_for_connection(&self, connection_id: ConnectionId) -> tide::Result<UserId> {
752 Ok(self
753 .connections
754 .get(&connection_id)
755 .ok_or_else(|| anyhow!("unknown connection"))?
756 .user_id)
757 }
758
759 // Add the given connection as a guest of the given worktree
760 fn join_worktree(
761 &mut self,
762 connection_id: ConnectionId,
763 worktree_id: u64,
764 access_token: &str,
765 ) -> Option<(ReplicaId, &Worktree)> {
766 if let Some(worktree) = self.worktrees.get_mut(&worktree_id) {
767 if access_token == worktree.access_token {
768 if let Some(connection) = self.connections.get_mut(&connection_id) {
769 connection.worktrees.insert(worktree_id);
770 }
771
772 let mut replica_id = 1;
773 while worktree.active_replica_ids.contains(&replica_id) {
774 replica_id += 1;
775 }
776 worktree.active_replica_ids.insert(replica_id);
777 worktree
778 .guest_connection_ids
779 .insert(connection_id, replica_id);
780 Some((replica_id, worktree))
781 } else {
782 None
783 }
784 } else {
785 None
786 }
787 }
788
789 fn read_worktree(
790 &self,
791 worktree_id: u64,
792 connection_id: ConnectionId,
793 ) -> tide::Result<&Worktree> {
794 let worktree = self
795 .worktrees
796 .get(&worktree_id)
797 .ok_or_else(|| anyhow!("worktree not found"))?;
798
799 if worktree.host_connection_id == Some(connection_id)
800 || worktree.guest_connection_ids.contains_key(&connection_id)
801 {
802 Ok(worktree)
803 } else {
804 Err(anyhow!(
805 "{} is not a member of worktree {}",
806 connection_id,
807 worktree_id
808 ))?
809 }
810 }
811
812 fn write_worktree(
813 &mut self,
814 worktree_id: u64,
815 connection_id: ConnectionId,
816 ) -> tide::Result<&mut Worktree> {
817 let worktree = self
818 .worktrees
819 .get_mut(&worktree_id)
820 .ok_or_else(|| anyhow!("worktree not found"))?;
821
822 if worktree.host_connection_id == Some(connection_id)
823 || worktree.guest_connection_ids.contains_key(&connection_id)
824 {
825 Ok(worktree)
826 } else {
827 Err(anyhow!(
828 "{} is not a member of worktree {}",
829 connection_id,
830 worktree_id
831 ))?
832 }
833 }
834}
835
836impl Worktree {
837 pub fn connection_ids(&self) -> Vec<ConnectionId> {
838 self.guest_connection_ids
839 .keys()
840 .copied()
841 .chain(self.host_connection_id)
842 .collect()
843 }
844
845 fn host_connection_id(&self) -> tide::Result<ConnectionId> {
846 Ok(self
847 .host_connection_id
848 .ok_or_else(|| anyhow!("host disconnected from worktree"))?)
849 }
850}
851
852impl Channel {
853 fn connection_ids(&self) -> Vec<ConnectionId> {
854 self.connection_ids.iter().copied().collect()
855 }
856}
857
858pub fn add_routes(app: &mut tide::Server<Arc<AppState>>, rpc: &Arc<Peer>) {
859 let server = Server::new(app.state().clone(), rpc.clone(), None);
860 app.at("/rpc").with(auth::VerifyToken).get(move |request: Request<Arc<AppState>>| {
861 let user_id = request.ext::<UserId>().copied();
862 let server = server.clone();
863 async move {
864 const WEBSOCKET_GUID: &str = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
865
866 let connection_upgrade = header_contains_ignore_case(&request, CONNECTION, "upgrade");
867 let upgrade_to_websocket = header_contains_ignore_case(&request, UPGRADE, "websocket");
868 let upgrade_requested = connection_upgrade && upgrade_to_websocket;
869
870 if !upgrade_requested {
871 return Ok(Response::new(StatusCode::UpgradeRequired));
872 }
873
874 let header = match request.header("Sec-Websocket-Key") {
875 Some(h) => h.as_str(),
876 None => return Err(anyhow!("expected sec-websocket-key"))?,
877 };
878
879 let mut response = Response::new(StatusCode::SwitchingProtocols);
880 response.insert_header(UPGRADE, "websocket");
881 response.insert_header(CONNECTION, "Upgrade");
882 let hash = Sha1::new().chain(header).chain(WEBSOCKET_GUID).finalize();
883 response.insert_header("Sec-Websocket-Accept", base64::encode(&hash[..]));
884 response.insert_header("Sec-Websocket-Version", "13");
885
886 let http_res: &mut tide::http::Response = response.as_mut();
887 let upgrade_receiver = http_res.recv_upgrade().await;
888 let addr = request.remote().unwrap_or("unknown").to_string();
889 let user_id = user_id.ok_or_else(|| anyhow!("user_id is not present on request. ensure auth::VerifyToken middleware is present"))?;
890 task::spawn(async move {
891 if let Some(stream) = upgrade_receiver.await {
892 let stream = WebSocketStream::from_raw_socket(stream, Role::Server, None).await;
893 server.handle_connection(stream, addr, user_id).await;
894 }
895 });
896
897 Ok(response)
898 }
899 });
900}
901
902fn header_contains_ignore_case<T>(
903 request: &tide::Request<T>,
904 header_name: HeaderName,
905 value: &str,
906) -> bool {
907 request
908 .header(header_name)
909 .map(|h| {
910 h.as_str()
911 .split(',')
912 .any(|s| s.trim().eq_ignore_ascii_case(value.trim()))
913 })
914 .unwrap_or(false)
915}
916
917#[cfg(test)]
918mod tests {
919 use super::*;
920 use crate::{
921 auth,
922 db::{self, UserId},
923 github, AppState, Config,
924 };
925 use async_std::{sync::RwLockReadGuard, task};
926 use gpui::{ModelHandle, TestAppContext};
927 use postage::mpsc;
928 use rand::prelude::*;
929 use serde_json::json;
930 use sqlx::{
931 migrate::{MigrateDatabase, Migrator},
932 types::time::OffsetDateTime,
933 Postgres,
934 };
935 use std::{path::Path, sync::Arc, time::Duration};
936 use zed::{
937 channel::{Channel, ChannelDetails, ChannelList},
938 editor::Editor,
939 fs::{FakeFs, Fs as _},
940 language::LanguageRegistry,
941 rpc::Client,
942 settings, test,
943 worktree::Worktree,
944 };
945 use zrpc::Peer;
946
947 #[gpui::test]
948 async fn test_share_worktree(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
949 let (window_b, _) = cx_b.add_window(|_| EmptyView);
950 let settings = settings::channel(&cx_b.font_cache()).unwrap().1;
951 let lang_registry = Arc::new(LanguageRegistry::new());
952
953 // Connect to a server as 2 clients.
954 let mut server = TestServer::start().await;
955 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
956 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
957
958 cx_a.foreground().forbid_parking();
959
960 // Share a local worktree as client A
961 let fs = Arc::new(FakeFs::new());
962 fs.insert_tree(
963 "/a",
964 json!({
965 "a.txt": "a-contents",
966 "b.txt": "b-contents",
967 }),
968 )
969 .await;
970 let worktree_a = Worktree::open_local(
971 "/a".as_ref(),
972 lang_registry.clone(),
973 fs,
974 &mut cx_a.to_async(),
975 )
976 .await
977 .unwrap();
978 worktree_a
979 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
980 .await;
981 let (worktree_id, worktree_token) = worktree_a
982 .update(&mut cx_a, |tree, cx| {
983 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
984 })
985 .await
986 .unwrap();
987
988 // Join that worktree as client B, and see that a guest has joined as client A.
989 let worktree_b = Worktree::open_remote(
990 client_b.clone(),
991 worktree_id,
992 worktree_token,
993 lang_registry.clone(),
994 &mut cx_b.to_async(),
995 )
996 .await
997 .unwrap();
998 let replica_id_b = worktree_b.read_with(&cx_b, |tree, _| tree.replica_id());
999 worktree_a
1000 .condition(&cx_a, |tree, _| {
1001 tree.peers()
1002 .values()
1003 .any(|replica_id| *replica_id == replica_id_b)
1004 })
1005 .await;
1006
1007 // Open the same file as client B and client A.
1008 let buffer_b = worktree_b
1009 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("b.txt", cx))
1010 .await
1011 .unwrap();
1012 buffer_b.read_with(&cx_b, |buf, _| assert_eq!(buf.text(), "b-contents"));
1013 worktree_a.read_with(&cx_a, |tree, cx| assert!(tree.has_open_buffer("b.txt", cx)));
1014 let buffer_a = worktree_a
1015 .update(&mut cx_a, |tree, cx| tree.open_buffer("b.txt", cx))
1016 .await
1017 .unwrap();
1018
1019 // Create a selection set as client B and see that selection set as client A.
1020 let editor_b = cx_b.add_view(window_b, |cx| Editor::for_buffer(buffer_b, settings, cx));
1021 buffer_a
1022 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 1)
1023 .await;
1024
1025 // Edit the buffer as client B and see that edit as client A.
1026 editor_b.update(&mut cx_b, |editor, cx| {
1027 editor.insert(&"ok, ".to_string(), cx)
1028 });
1029 buffer_a
1030 .condition(&cx_a, |buffer, _| buffer.text() == "ok, b-contents")
1031 .await;
1032
1033 // Remove the selection set as client B, see those selections disappear as client A.
1034 cx_b.update(move |_| drop(editor_b));
1035 buffer_a
1036 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 0)
1037 .await;
1038
1039 // Close the buffer as client A, see that the buffer is closed.
1040 drop(buffer_a);
1041 worktree_a
1042 .condition(&cx_a, |tree, cx| !tree.has_open_buffer("b.txt", cx))
1043 .await;
1044
1045 // Dropping the worktree removes client B from client A's peers.
1046 cx_b.update(move |_| drop(worktree_b));
1047 worktree_a
1048 .condition(&cx_a, |tree, _| tree.peers().is_empty())
1049 .await;
1050 }
1051
1052 #[gpui::test]
1053 async fn test_propagate_saves_and_fs_changes_in_shared_worktree(
1054 mut cx_a: TestAppContext,
1055 mut cx_b: TestAppContext,
1056 mut cx_c: TestAppContext,
1057 ) {
1058 let lang_registry = Arc::new(LanguageRegistry::new());
1059
1060 // Connect to a server as 3 clients.
1061 let mut server = TestServer::start().await;
1062 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1063 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1064 let (_, client_c) = server.create_client(&mut cx_c, "user_c").await;
1065
1066 cx_a.foreground().forbid_parking();
1067
1068 let fs = Arc::new(FakeFs::new());
1069
1070 // Share a worktree as client A.
1071 fs.insert_tree(
1072 "/a",
1073 json!({
1074 "file1": "",
1075 "file2": ""
1076 }),
1077 )
1078 .await;
1079
1080 let worktree_a = Worktree::open_local(
1081 "/a".as_ref(),
1082 lang_registry.clone(),
1083 fs.clone(),
1084 &mut cx_a.to_async(),
1085 )
1086 .await
1087 .unwrap();
1088 worktree_a
1089 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1090 .await;
1091 let (worktree_id, worktree_token) = worktree_a
1092 .update(&mut cx_a, |tree, cx| {
1093 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1094 })
1095 .await
1096 .unwrap();
1097
1098 // Join that worktree as clients B and C.
1099 let worktree_b = Worktree::open_remote(
1100 client_b.clone(),
1101 worktree_id,
1102 worktree_token.clone(),
1103 lang_registry.clone(),
1104 &mut cx_b.to_async(),
1105 )
1106 .await
1107 .unwrap();
1108 let worktree_c = Worktree::open_remote(
1109 client_c.clone(),
1110 worktree_id,
1111 worktree_token,
1112 lang_registry.clone(),
1113 &mut cx_c.to_async(),
1114 )
1115 .await
1116 .unwrap();
1117
1118 // Open and edit a buffer as both guests B and C.
1119 let buffer_b = worktree_b
1120 .update(&mut cx_b, |tree, cx| tree.open_buffer("file1", cx))
1121 .await
1122 .unwrap();
1123 let buffer_c = worktree_c
1124 .update(&mut cx_c, |tree, cx| tree.open_buffer("file1", cx))
1125 .await
1126 .unwrap();
1127 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "i-am-b, ", cx));
1128 buffer_c.update(&mut cx_c, |buf, cx| buf.edit([0..0], "i-am-c, ", cx));
1129
1130 // Open and edit that buffer as the host.
1131 let buffer_a = worktree_a
1132 .update(&mut cx_a, |tree, cx| tree.open_buffer("file1", cx))
1133 .await
1134 .unwrap();
1135
1136 buffer_a
1137 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, ")
1138 .await;
1139 buffer_a.update(&mut cx_a, |buf, cx| {
1140 buf.edit([buf.len()..buf.len()], "i-am-a", cx)
1141 });
1142
1143 // Wait for edits to propagate
1144 buffer_a
1145 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1146 .await;
1147 buffer_b
1148 .condition(&mut cx_b, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1149 .await;
1150 buffer_c
1151 .condition(&mut cx_c, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1152 .await;
1153
1154 // Edit the buffer as the host and concurrently save as guest B.
1155 let save_b = buffer_b.update(&mut cx_b, |buf, cx| buf.save(cx).unwrap());
1156 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "hi-a, ", cx));
1157 save_b.await.unwrap();
1158 assert_eq!(
1159 fs.load("/a/file1".as_ref()).await.unwrap(),
1160 "hi-a, i-am-c, i-am-b, i-am-a"
1161 );
1162 buffer_a.read_with(&cx_a, |buf, _| assert!(!buf.is_dirty()));
1163 buffer_b.read_with(&cx_b, |buf, _| assert!(!buf.is_dirty()));
1164 buffer_c.condition(&cx_c, |buf, _| !buf.is_dirty()).await;
1165
1166 // Make changes on host's file system, see those changes on the guests.
1167 fs.rename("/a/file2".as_ref(), "/a/file3".as_ref())
1168 .await
1169 .unwrap();
1170 fs.insert_file(Path::new("/a/file4"), "4".into())
1171 .await
1172 .unwrap();
1173
1174 worktree_b
1175 .condition(&cx_b, |tree, _| tree.file_count() == 3)
1176 .await;
1177 worktree_c
1178 .condition(&cx_c, |tree, _| tree.file_count() == 3)
1179 .await;
1180 worktree_b.read_with(&cx_b, |tree, _| {
1181 assert_eq!(
1182 tree.paths()
1183 .map(|p| p.to_string_lossy())
1184 .collect::<Vec<_>>(),
1185 &["file1", "file3", "file4"]
1186 )
1187 });
1188 worktree_c.read_with(&cx_c, |tree, _| {
1189 assert_eq!(
1190 tree.paths()
1191 .map(|p| p.to_string_lossy())
1192 .collect::<Vec<_>>(),
1193 &["file1", "file3", "file4"]
1194 )
1195 });
1196 }
1197
1198 #[gpui::test]
1199 async fn test_buffer_conflict_after_save(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1200 let lang_registry = Arc::new(LanguageRegistry::new());
1201
1202 // Connect to a server as 2 clients.
1203 let mut server = TestServer::start().await;
1204 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1205 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1206
1207 cx_a.foreground().forbid_parking();
1208
1209 // Share a local worktree as client A
1210 let fs = Arc::new(FakeFs::new());
1211 fs.save(Path::new("/a.txt"), &"a-contents".into())
1212 .await
1213 .unwrap();
1214 let worktree_a = Worktree::open_local(
1215 "/".as_ref(),
1216 lang_registry.clone(),
1217 fs,
1218 &mut cx_a.to_async(),
1219 )
1220 .await
1221 .unwrap();
1222 worktree_a
1223 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1224 .await;
1225 let (worktree_id, worktree_token) = worktree_a
1226 .update(&mut cx_a, |tree, cx| {
1227 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1228 })
1229 .await
1230 .unwrap();
1231
1232 // Join that worktree as client B, and see that a guest has joined as client A.
1233 let worktree_b = Worktree::open_remote(
1234 client_b.clone(),
1235 worktree_id,
1236 worktree_token,
1237 lang_registry.clone(),
1238 &mut cx_b.to_async(),
1239 )
1240 .await
1241 .unwrap();
1242
1243 let buffer_b = worktree_b
1244 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx))
1245 .await
1246 .unwrap();
1247 let mtime = buffer_b.read_with(&cx_b, |buf, _| buf.file().unwrap().mtime);
1248
1249 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "world ", cx));
1250 buffer_b.read_with(&cx_b, |buf, _| {
1251 assert!(buf.is_dirty());
1252 assert!(!buf.has_conflict());
1253 });
1254
1255 buffer_b
1256 .update(&mut cx_b, |buf, cx| buf.save(cx))
1257 .unwrap()
1258 .await
1259 .unwrap();
1260 worktree_b
1261 .condition(&cx_b, |_, cx| {
1262 buffer_b.read(cx).file().unwrap().mtime != mtime
1263 })
1264 .await;
1265 buffer_b.read_with(&cx_b, |buf, _| {
1266 assert!(!buf.is_dirty());
1267 assert!(!buf.has_conflict());
1268 });
1269
1270 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "hello ", cx));
1271 buffer_b.read_with(&cx_b, |buf, _| {
1272 assert!(buf.is_dirty());
1273 assert!(!buf.has_conflict());
1274 });
1275 }
1276
1277 #[gpui::test]
1278 async fn test_editing_while_guest_opens_buffer(
1279 mut cx_a: TestAppContext,
1280 mut cx_b: TestAppContext,
1281 ) {
1282 let lang_registry = Arc::new(LanguageRegistry::new());
1283
1284 // Connect to a server as 2 clients.
1285 let mut server = TestServer::start().await;
1286 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1287 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1288
1289 cx_a.foreground().forbid_parking();
1290
1291 // Share a local worktree as client A
1292 let fs = Arc::new(FakeFs::new());
1293 fs.save(Path::new("/a.txt"), &"a-contents".into())
1294 .await
1295 .unwrap();
1296 let worktree_a = Worktree::open_local(
1297 "/".as_ref(),
1298 lang_registry.clone(),
1299 fs,
1300 &mut cx_a.to_async(),
1301 )
1302 .await
1303 .unwrap();
1304 worktree_a
1305 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1306 .await;
1307 let (worktree_id, worktree_token) = worktree_a
1308 .update(&mut cx_a, |tree, cx| {
1309 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1310 })
1311 .await
1312 .unwrap();
1313
1314 // Join that worktree as client B, and see that a guest has joined as client A.
1315 let worktree_b = Worktree::open_remote(
1316 client_b.clone(),
1317 worktree_id,
1318 worktree_token,
1319 lang_registry.clone(),
1320 &mut cx_b.to_async(),
1321 )
1322 .await
1323 .unwrap();
1324
1325 let buffer_a = worktree_a
1326 .update(&mut cx_a, |tree, cx| tree.open_buffer("a.txt", cx))
1327 .await
1328 .unwrap();
1329 let buffer_b = cx_b
1330 .background()
1331 .spawn(worktree_b.update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx)));
1332
1333 task::yield_now().await;
1334 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "z", cx));
1335
1336 let text = buffer_a.read_with(&cx_a, |buf, _| buf.text());
1337 let buffer_b = buffer_b.await.unwrap();
1338 buffer_b.condition(&cx_b, |buf, _| buf.text() == text).await;
1339 }
1340
1341 #[gpui::test]
1342 async fn test_peer_disconnection(mut cx_a: TestAppContext, cx_b: TestAppContext) {
1343 let lang_registry = Arc::new(LanguageRegistry::new());
1344
1345 // Connect to a server as 2 clients.
1346 let mut server = TestServer::start().await;
1347 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1348 let (_, client_b) = server.create_client(&mut cx_a, "user_b").await;
1349
1350 cx_a.foreground().forbid_parking();
1351
1352 // Share a local worktree as client A
1353 let fs = Arc::new(FakeFs::new());
1354 fs.insert_tree(
1355 "/a",
1356 json!({
1357 "a.txt": "a-contents",
1358 "b.txt": "b-contents",
1359 }),
1360 )
1361 .await;
1362 let worktree_a = Worktree::open_local(
1363 "/a".as_ref(),
1364 lang_registry.clone(),
1365 fs,
1366 &mut cx_a.to_async(),
1367 )
1368 .await
1369 .unwrap();
1370 worktree_a
1371 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1372 .await;
1373 let (worktree_id, worktree_token) = worktree_a
1374 .update(&mut cx_a, |tree, cx| {
1375 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1376 })
1377 .await
1378 .unwrap();
1379
1380 // Join that worktree as client B, and see that a guest has joined as client A.
1381 let _worktree_b = Worktree::open_remote(
1382 client_b.clone(),
1383 worktree_id,
1384 worktree_token,
1385 lang_registry.clone(),
1386 &mut cx_b.to_async(),
1387 )
1388 .await
1389 .unwrap();
1390 worktree_a
1391 .condition(&cx_a, |tree, _| tree.peers().len() == 1)
1392 .await;
1393
1394 // Drop client B's connection and ensure client A observes client B leaving the worktree.
1395 client_b.disconnect().await.unwrap();
1396 worktree_a
1397 .condition(&cx_a, |tree, _| tree.peers().len() == 0)
1398 .await;
1399 }
1400
1401 #[gpui::test]
1402 async fn test_basic_chat(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1403 // Connect to a server as 2 clients.
1404 let mut server = TestServer::start().await;
1405 let (user_id_a, client_a) = server.create_client(&mut cx_a, "user_a").await;
1406 let (user_id_b, client_b) = server.create_client(&mut cx_b, "user_b").await;
1407
1408 // Create an org that includes these 2 users.
1409 let db = &server.app_state.db;
1410 let org_id = db.create_org("Test Org", "test-org").await.unwrap();
1411 db.add_org_member(org_id, user_id_a, false).await.unwrap();
1412 db.add_org_member(org_id, user_id_b, false).await.unwrap();
1413
1414 // Create a channel that includes all the users.
1415 let channel_id = db.create_org_channel(org_id, "test-channel").await.unwrap();
1416 db.add_channel_member(channel_id, user_id_a, false)
1417 .await
1418 .unwrap();
1419 db.add_channel_member(channel_id, user_id_b, false)
1420 .await
1421 .unwrap();
1422 db.create_channel_message(
1423 channel_id,
1424 user_id_b,
1425 "hello A, it's B.",
1426 OffsetDateTime::now_utc(),
1427 )
1428 .await
1429 .unwrap();
1430
1431 let channels_a = ChannelList::new(client_a, &mut cx_a.to_async())
1432 .await
1433 .unwrap();
1434 channels_a.read_with(&cx_a, |list, _| {
1435 assert_eq!(
1436 list.available_channels(),
1437 &[ChannelDetails {
1438 id: channel_id.to_proto(),
1439 name: "test-channel".to_string()
1440 }]
1441 )
1442 });
1443 let channel_a = channels_a.update(&mut cx_a, |this, cx| {
1444 this.get_channel(channel_id.to_proto(), cx).unwrap()
1445 });
1446 channel_a.read_with(&cx_a, |channel, _| assert!(channel.messages().is_empty()));
1447 channel_a.next_notification(&cx_a).await;
1448 assert_eq!(
1449 channel_messages(&channel_a, &cx_a),
1450 &[(user_id_b.to_proto(), "hello A, it's B.".to_string())]
1451 );
1452
1453 let channels_b = ChannelList::new(client_b, &mut cx_b.to_async())
1454 .await
1455 .unwrap();
1456 channels_b.read_with(&cx_b, |list, _| {
1457 assert_eq!(
1458 list.available_channels(),
1459 &[ChannelDetails {
1460 id: channel_id.to_proto(),
1461 name: "test-channel".to_string()
1462 }]
1463 )
1464 });
1465 let channel_b = channels_b.update(&mut cx_b, |this, cx| {
1466 this.get_channel(channel_id.to_proto(), cx).unwrap()
1467 });
1468 channel_b.read_with(&cx_b, |channel, _| assert!(channel.messages().is_empty()));
1469 channel_b.next_notification(&cx_b).await;
1470 assert_eq!(
1471 channel_messages(&channel_b, &cx_b),
1472 &[(user_id_b.to_proto(), "hello A, it's B.".to_string())]
1473 );
1474
1475 channel_a.update(&mut cx_a, |channel, cx| {
1476 channel.send_message("oh, hi B.".to_string(), cx).unwrap();
1477 channel.send_message("sup".to_string(), cx).unwrap();
1478 assert_eq!(
1479 channel
1480 .pending_messages()
1481 .iter()
1482 .map(|m| &m.body)
1483 .collect::<Vec<_>>(),
1484 &["oh, hi B.", "sup"]
1485 )
1486 });
1487 channel_a.next_notification(&cx_a).await;
1488 channel_a.read_with(&cx_a, |channel, _| {
1489 assert_eq!(channel.pending_messages().len(), 1);
1490 });
1491 channel_a.next_notification(&cx_a).await;
1492 channel_a.read_with(&cx_a, |channel, _| {
1493 assert_eq!(channel.pending_messages().len(), 0);
1494 });
1495
1496 channel_b.next_notification(&cx_b).await;
1497 assert_eq!(
1498 channel_messages(&channel_b, &cx_b),
1499 &[
1500 (user_id_b.to_proto(), "hello A, it's B.".to_string()),
1501 (user_id_a.to_proto(), "oh, hi B.".to_string()),
1502 (user_id_a.to_proto(), "sup".to_string()),
1503 ]
1504 );
1505
1506 assert_eq!(
1507 server.state().await.channels[&channel_id]
1508 .connection_ids
1509 .len(),
1510 2
1511 );
1512 cx_b.update(|_| drop(channel_b));
1513 server
1514 .condition(|state| state.channels[&channel_id].connection_ids.len() == 1)
1515 .await;
1516
1517 cx_a.update(|_| drop(channel_a));
1518 server
1519 .condition(|state| !state.channels.contains_key(&channel_id))
1520 .await;
1521
1522 fn channel_messages(
1523 channel: &ModelHandle<Channel>,
1524 cx: &TestAppContext,
1525 ) -> Vec<(u64, String)> {
1526 channel.read_with(cx, |channel, _| {
1527 channel
1528 .messages()
1529 .iter()
1530 .map(|m| (m.sender_id, m.body.clone()))
1531 .collect()
1532 })
1533 }
1534 }
1535
1536 struct TestServer {
1537 peer: Arc<Peer>,
1538 app_state: Arc<AppState>,
1539 server: Arc<rpc::Server>,
1540 db_name: String,
1541 notifications: mpsc::Receiver<()>,
1542 }
1543
1544 impl TestServer {
1545 async fn start() -> Self {
1546 let mut rng = StdRng::from_entropy();
1547 let db_name = format!("zed-test-{}", rng.gen::<u128>());
1548 let app_state = Self::build_app_state(&db_name).await;
1549 let peer = Peer::new();
1550 let notifications = mpsc::channel(128);
1551 let server = Server::new(app_state.clone(), peer.clone(), Some(notifications.0));
1552 Self {
1553 peer,
1554 app_state,
1555 server,
1556 db_name,
1557 notifications: notifications.1,
1558 }
1559 }
1560
1561 async fn create_client(
1562 &mut self,
1563 cx: &mut TestAppContext,
1564 name: &str,
1565 ) -> (UserId, Arc<Client>) {
1566 let user_id = self.app_state.db.create_user(name, false).await.unwrap();
1567 let client = Client::new();
1568 let (client_conn, server_conn) = test::Channel::bidirectional();
1569 cx.background()
1570 .spawn(
1571 self.server
1572 .handle_connection(server_conn, name.to_string(), user_id),
1573 )
1574 .detach();
1575 client
1576 .add_connection(user_id.to_proto(), client_conn, cx.to_async())
1577 .await
1578 .unwrap();
1579 (user_id, client)
1580 }
1581
1582 async fn build_app_state(db_name: &str) -> Arc<AppState> {
1583 let mut config = Config::default();
1584 config.session_secret = "a".repeat(32);
1585 config.database_url = format!("postgres://postgres@localhost/{}", db_name);
1586
1587 Self::create_db(&config.database_url).await;
1588 let db = db::Db(
1589 db::DbOptions::new()
1590 .max_connections(5)
1591 .connect(&config.database_url)
1592 .await
1593 .expect("failed to connect to postgres database"),
1594 );
1595 let migrator = Migrator::new(Path::new(concat!(
1596 env!("CARGO_MANIFEST_DIR"),
1597 "/migrations"
1598 )))
1599 .await
1600 .unwrap();
1601 migrator.run(&db.0).await.unwrap();
1602
1603 let github_client = github::AppClient::test();
1604 Arc::new(AppState {
1605 db,
1606 handlebars: Default::default(),
1607 auth_client: auth::build_client("", ""),
1608 repo_client: github::RepoClient::test(&github_client),
1609 github_client,
1610 config,
1611 })
1612 }
1613
1614 async fn create_db(url: &str) {
1615 // Enable tests to run in parallel by serializing the creation of each test database.
1616 lazy_static::lazy_static! {
1617 static ref DB_CREATION: async_std::sync::Mutex<()> = async_std::sync::Mutex::new(());
1618 }
1619
1620 let _lock = DB_CREATION.lock().await;
1621 Postgres::create_database(url)
1622 .await
1623 .expect("failed to create test database");
1624 }
1625
1626 async fn state<'a>(&'a self) -> RwLockReadGuard<'a, ServerState> {
1627 self.server.state.read().await
1628 }
1629
1630 async fn condition<F>(&mut self, mut predicate: F)
1631 where
1632 F: FnMut(&ServerState) -> bool,
1633 {
1634 async_std::future::timeout(Duration::from_millis(500), async {
1635 while !(predicate)(&*self.server.state.read().await) {
1636 self.notifications.recv().await;
1637 }
1638 })
1639 .await
1640 .expect("condition timed out");
1641 }
1642 }
1643
1644 impl Drop for TestServer {
1645 fn drop(&mut self) {
1646 task::block_on(async {
1647 self.peer.reset().await;
1648 self.app_state.db.close(&self.db_name).await;
1649 Postgres::drop_database(&self.app_state.config.database_url)
1650 .await
1651 .unwrap();
1652 });
1653 }
1654 }
1655
1656 struct EmptyView;
1657
1658 impl gpui::Entity for EmptyView {
1659 type Event = ();
1660 }
1661
1662 impl gpui::View for EmptyView {
1663 fn ui_name() -> &'static str {
1664 "empty view"
1665 }
1666
1667 fn render<'a>(&self, _: &gpui::RenderContext<Self>) -> gpui::ElementBox {
1668 gpui::Element::boxed(gpui::elements::Empty)
1669 }
1670 }
1671}