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::{
926 sync::RwLockReadGuard,
927 task::{self, block_on},
928 };
929 use gpui::TestAppContext;
930 use postage::mpsc;
931 use rand::prelude::*;
932 use serde_json::json;
933 use sqlx::{migrate::MigrateDatabase, types::time::OffsetDateTime, Postgres};
934 use std::{path::Path, sync::Arc, time::Duration};
935 use zed::{
936 channel::{Channel, ChannelDetails, ChannelList},
937 editor::{Editor, Insert},
938 fs::{FakeFs, Fs as _},
939 language::LanguageRegistry,
940 rpc::Client,
941 settings, test,
942 worktree::Worktree,
943 };
944 use zrpc::Peer;
945
946 #[gpui::test]
947 async fn test_share_worktree(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
948 let (window_b, _) = cx_b.add_window(|_| EmptyView);
949 let settings = settings::channel(&cx_b.font_cache()).unwrap().1;
950 let lang_registry = Arc::new(LanguageRegistry::new());
951
952 // Connect to a server as 2 clients.
953 let mut server = TestServer::start().await;
954 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
955 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
956
957 cx_a.foreground().forbid_parking();
958
959 // Share a local worktree as client A
960 let fs = Arc::new(FakeFs::new());
961 fs.insert_tree(
962 "/a",
963 json!({
964 "a.txt": "a-contents",
965 "b.txt": "b-contents",
966 }),
967 )
968 .await;
969 let worktree_a = Worktree::open_local(
970 "/a".as_ref(),
971 lang_registry.clone(),
972 fs,
973 &mut cx_a.to_async(),
974 )
975 .await
976 .unwrap();
977 worktree_a
978 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
979 .await;
980 let (worktree_id, worktree_token) = worktree_a
981 .update(&mut cx_a, |tree, cx| {
982 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
983 })
984 .await
985 .unwrap();
986
987 // Join that worktree as client B, and see that a guest has joined as client A.
988 let worktree_b = Worktree::open_remote(
989 client_b.clone(),
990 worktree_id,
991 worktree_token,
992 lang_registry.clone(),
993 &mut cx_b.to_async(),
994 )
995 .await
996 .unwrap();
997 let replica_id_b = worktree_b.read_with(&cx_b, |tree, _| tree.replica_id());
998 worktree_a
999 .condition(&cx_a, |tree, _| {
1000 tree.peers()
1001 .values()
1002 .any(|replica_id| *replica_id == replica_id_b)
1003 })
1004 .await;
1005
1006 // Open the same file as client B and client A.
1007 let buffer_b = worktree_b
1008 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("b.txt", cx))
1009 .await
1010 .unwrap();
1011 buffer_b.read_with(&cx_b, |buf, _| assert_eq!(buf.text(), "b-contents"));
1012 worktree_a.read_with(&cx_a, |tree, cx| assert!(tree.has_open_buffer("b.txt", cx)));
1013 let buffer_a = worktree_a
1014 .update(&mut cx_a, |tree, cx| tree.open_buffer("b.txt", cx))
1015 .await
1016 .unwrap();
1017
1018 // Create a selection set as client B and see that selection set as client A.
1019 let editor_b = cx_b.add_view(window_b, |cx| Editor::for_buffer(buffer_b, settings, cx));
1020 buffer_a
1021 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 1)
1022 .await;
1023
1024 // Edit the buffer as client B and see that edit as client A.
1025 editor_b.update(&mut cx_b, |editor, cx| {
1026 editor.insert(&Insert("ok, ".into()), cx)
1027 });
1028 buffer_a
1029 .condition(&cx_a, |buffer, _| buffer.text() == "ok, b-contents")
1030 .await;
1031
1032 // Remove the selection set as client B, see those selections disappear as client A.
1033 cx_b.update(move |_| drop(editor_b));
1034 buffer_a
1035 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 0)
1036 .await;
1037
1038 // Close the buffer as client A, see that the buffer is closed.
1039 drop(buffer_a);
1040 worktree_a
1041 .condition(&cx_a, |tree, cx| !tree.has_open_buffer("b.txt", cx))
1042 .await;
1043
1044 // Dropping the worktree removes client B from client A's peers.
1045 cx_b.update(move |_| drop(worktree_b));
1046 worktree_a
1047 .condition(&cx_a, |tree, _| tree.peers().is_empty())
1048 .await;
1049 }
1050
1051 #[gpui::test]
1052 async fn test_propagate_saves_and_fs_changes_in_shared_worktree(
1053 mut cx_a: TestAppContext,
1054 mut cx_b: TestAppContext,
1055 mut cx_c: TestAppContext,
1056 ) {
1057 cx_a.foreground().forbid_parking();
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 let fs = Arc::new(FakeFs::new());
1067
1068 // Share a worktree as client A.
1069 fs.insert_tree(
1070 "/a",
1071 json!({
1072 "file1": "",
1073 "file2": ""
1074 }),
1075 )
1076 .await;
1077
1078 let worktree_a = Worktree::open_local(
1079 "/a".as_ref(),
1080 lang_registry.clone(),
1081 fs.clone(),
1082 &mut cx_a.to_async(),
1083 )
1084 .await
1085 .unwrap();
1086 worktree_a
1087 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1088 .await;
1089 let (worktree_id, worktree_token) = worktree_a
1090 .update(&mut cx_a, |tree, cx| {
1091 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1092 })
1093 .await
1094 .unwrap();
1095
1096 // Join that worktree as clients B and C.
1097 let worktree_b = Worktree::open_remote(
1098 client_b.clone(),
1099 worktree_id,
1100 worktree_token.clone(),
1101 lang_registry.clone(),
1102 &mut cx_b.to_async(),
1103 )
1104 .await
1105 .unwrap();
1106 let worktree_c = Worktree::open_remote(
1107 client_c.clone(),
1108 worktree_id,
1109 worktree_token,
1110 lang_registry.clone(),
1111 &mut cx_c.to_async(),
1112 )
1113 .await
1114 .unwrap();
1115
1116 // Open and edit a buffer as both guests B and C.
1117 let buffer_b = worktree_b
1118 .update(&mut cx_b, |tree, cx| tree.open_buffer("file1", cx))
1119 .await
1120 .unwrap();
1121 let buffer_c = worktree_c
1122 .update(&mut cx_c, |tree, cx| tree.open_buffer("file1", cx))
1123 .await
1124 .unwrap();
1125 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "i-am-b, ", cx));
1126 buffer_c.update(&mut cx_c, |buf, cx| buf.edit([0..0], "i-am-c, ", cx));
1127
1128 // Open and edit that buffer as the host.
1129 let buffer_a = worktree_a
1130 .update(&mut cx_a, |tree, cx| tree.open_buffer("file1", cx))
1131 .await
1132 .unwrap();
1133
1134 buffer_a
1135 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, ")
1136 .await;
1137 buffer_a.update(&mut cx_a, |buf, cx| {
1138 buf.edit([buf.len()..buf.len()], "i-am-a", cx)
1139 });
1140
1141 // Wait for edits to propagate
1142 buffer_a
1143 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1144 .await;
1145 buffer_b
1146 .condition(&mut cx_b, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1147 .await;
1148 buffer_c
1149 .condition(&mut cx_c, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1150 .await;
1151
1152 // Edit the buffer as the host and concurrently save as guest B.
1153 let save_b = buffer_b.update(&mut cx_b, |buf, cx| buf.save(cx).unwrap());
1154 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "hi-a, ", cx));
1155 save_b.await.unwrap();
1156 assert_eq!(
1157 fs.load("/a/file1".as_ref()).await.unwrap(),
1158 "hi-a, i-am-c, i-am-b, i-am-a"
1159 );
1160 buffer_a.read_with(&cx_a, |buf, _| assert!(!buf.is_dirty()));
1161 buffer_b.read_with(&cx_b, |buf, _| assert!(!buf.is_dirty()));
1162 buffer_c.condition(&cx_c, |buf, _| !buf.is_dirty()).await;
1163
1164 // Make changes on host's file system, see those changes on the guests.
1165 fs.rename("/a/file2".as_ref(), "/a/file3".as_ref())
1166 .await
1167 .unwrap();
1168 fs.insert_file(Path::new("/a/file4"), "4".into())
1169 .await
1170 .unwrap();
1171
1172 worktree_b
1173 .condition(&cx_b, |tree, _| tree.file_count() == 3)
1174 .await;
1175 worktree_c
1176 .condition(&cx_c, |tree, _| tree.file_count() == 3)
1177 .await;
1178 worktree_b.read_with(&cx_b, |tree, _| {
1179 assert_eq!(
1180 tree.paths()
1181 .map(|p| p.to_string_lossy())
1182 .collect::<Vec<_>>(),
1183 &["file1", "file3", "file4"]
1184 )
1185 });
1186 worktree_c.read_with(&cx_c, |tree, _| {
1187 assert_eq!(
1188 tree.paths()
1189 .map(|p| p.to_string_lossy())
1190 .collect::<Vec<_>>(),
1191 &["file1", "file3", "file4"]
1192 )
1193 });
1194 }
1195
1196 #[gpui::test]
1197 async fn test_buffer_conflict_after_save(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1198 cx_a.foreground().forbid_parking();
1199 let lang_registry = Arc::new(LanguageRegistry::new());
1200
1201 // Connect to a server as 2 clients.
1202 let mut server = TestServer::start().await;
1203 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1204 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1205
1206 // Share a local worktree as client A
1207 let fs = Arc::new(FakeFs::new());
1208 fs.save(Path::new("/a.txt"), &"a-contents".into())
1209 .await
1210 .unwrap();
1211 let worktree_a = Worktree::open_local(
1212 "/".as_ref(),
1213 lang_registry.clone(),
1214 fs,
1215 &mut cx_a.to_async(),
1216 )
1217 .await
1218 .unwrap();
1219 worktree_a
1220 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1221 .await;
1222 let (worktree_id, worktree_token) = worktree_a
1223 .update(&mut cx_a, |tree, cx| {
1224 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1225 })
1226 .await
1227 .unwrap();
1228
1229 // Join that worktree as client B, and see that a guest has joined as client A.
1230 let worktree_b = Worktree::open_remote(
1231 client_b.clone(),
1232 worktree_id,
1233 worktree_token,
1234 lang_registry.clone(),
1235 &mut cx_b.to_async(),
1236 )
1237 .await
1238 .unwrap();
1239
1240 let buffer_b = worktree_b
1241 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx))
1242 .await
1243 .unwrap();
1244 let mtime = buffer_b.read_with(&cx_b, |buf, _| buf.file().unwrap().mtime);
1245
1246 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "world ", cx));
1247 buffer_b.read_with(&cx_b, |buf, _| {
1248 assert!(buf.is_dirty());
1249 assert!(!buf.has_conflict());
1250 });
1251
1252 buffer_b
1253 .update(&mut cx_b, |buf, cx| buf.save(cx))
1254 .unwrap()
1255 .await
1256 .unwrap();
1257 worktree_b
1258 .condition(&cx_b, |_, cx| {
1259 buffer_b.read(cx).file().unwrap().mtime != mtime
1260 })
1261 .await;
1262 buffer_b.read_with(&cx_b, |buf, _| {
1263 assert!(!buf.is_dirty());
1264 assert!(!buf.has_conflict());
1265 });
1266
1267 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "hello ", cx));
1268 buffer_b.read_with(&cx_b, |buf, _| {
1269 assert!(buf.is_dirty());
1270 assert!(!buf.has_conflict());
1271 });
1272 }
1273
1274 #[gpui::test]
1275 async fn test_editing_while_guest_opens_buffer(
1276 mut cx_a: TestAppContext,
1277 mut cx_b: TestAppContext,
1278 ) {
1279 cx_a.foreground().forbid_parking();
1280 let lang_registry = Arc::new(LanguageRegistry::new());
1281
1282 // Connect to a server as 2 clients.
1283 let mut server = TestServer::start().await;
1284 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1285 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1286
1287 // Share a local worktree as client A
1288 let fs = Arc::new(FakeFs::new());
1289 fs.save(Path::new("/a.txt"), &"a-contents".into())
1290 .await
1291 .unwrap();
1292 let worktree_a = Worktree::open_local(
1293 "/".as_ref(),
1294 lang_registry.clone(),
1295 fs,
1296 &mut cx_a.to_async(),
1297 )
1298 .await
1299 .unwrap();
1300 worktree_a
1301 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1302 .await;
1303 let (worktree_id, worktree_token) = worktree_a
1304 .update(&mut cx_a, |tree, cx| {
1305 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1306 })
1307 .await
1308 .unwrap();
1309
1310 // Join that worktree as client B, and see that a guest has joined as client A.
1311 let worktree_b = Worktree::open_remote(
1312 client_b.clone(),
1313 worktree_id,
1314 worktree_token,
1315 lang_registry.clone(),
1316 &mut cx_b.to_async(),
1317 )
1318 .await
1319 .unwrap();
1320
1321 let buffer_a = worktree_a
1322 .update(&mut cx_a, |tree, cx| tree.open_buffer("a.txt", cx))
1323 .await
1324 .unwrap();
1325 let buffer_b = cx_b
1326 .background()
1327 .spawn(worktree_b.update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx)));
1328
1329 task::yield_now().await;
1330 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "z", cx));
1331
1332 let text = buffer_a.read_with(&cx_a, |buf, _| buf.text());
1333 let buffer_b = buffer_b.await.unwrap();
1334 buffer_b.condition(&cx_b, |buf, _| buf.text() == text).await;
1335 }
1336
1337 #[gpui::test]
1338 async fn test_peer_disconnection(mut cx_a: TestAppContext, cx_b: TestAppContext) {
1339 cx_a.foreground().forbid_parking();
1340 let lang_registry = Arc::new(LanguageRegistry::new());
1341
1342 // Connect to a server as 2 clients.
1343 let mut server = TestServer::start().await;
1344 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1345 let (_, client_b) = server.create_client(&mut cx_a, "user_b").await;
1346
1347 // Share a local worktree as client A
1348 let fs = Arc::new(FakeFs::new());
1349 fs.insert_tree(
1350 "/a",
1351 json!({
1352 "a.txt": "a-contents",
1353 "b.txt": "b-contents",
1354 }),
1355 )
1356 .await;
1357 let worktree_a = Worktree::open_local(
1358 "/a".as_ref(),
1359 lang_registry.clone(),
1360 fs,
1361 &mut cx_a.to_async(),
1362 )
1363 .await
1364 .unwrap();
1365 worktree_a
1366 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1367 .await;
1368 let (worktree_id, worktree_token) = worktree_a
1369 .update(&mut cx_a, |tree, cx| {
1370 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1371 })
1372 .await
1373 .unwrap();
1374
1375 // Join that worktree as client B, and see that a guest has joined as client A.
1376 let _worktree_b = Worktree::open_remote(
1377 client_b.clone(),
1378 worktree_id,
1379 worktree_token,
1380 lang_registry.clone(),
1381 &mut cx_b.to_async(),
1382 )
1383 .await
1384 .unwrap();
1385 worktree_a
1386 .condition(&cx_a, |tree, _| tree.peers().len() == 1)
1387 .await;
1388
1389 // Drop client B's connection and ensure client A observes client B leaving the worktree.
1390 client_b.disconnect().await.unwrap();
1391 worktree_a
1392 .condition(&cx_a, |tree, _| tree.peers().len() == 0)
1393 .await;
1394 }
1395
1396 #[gpui::test]
1397 async fn test_basic_chat(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1398 cx_a.foreground().forbid_parking();
1399
1400 // Connect to a server as 2 clients.
1401 let mut server = TestServer::start().await;
1402 let (user_id_a, client_a) = server.create_client(&mut cx_a, "user_a").await;
1403 let (user_id_b, client_b) = server.create_client(&mut cx_b, "user_b").await;
1404
1405 // Create an org that includes these 2 users.
1406 let db = &server.app_state.db;
1407 let org_id = db.create_org("Test Org", "test-org").await.unwrap();
1408 db.add_org_member(org_id, user_id_a, false).await.unwrap();
1409 db.add_org_member(org_id, user_id_b, false).await.unwrap();
1410
1411 // Create a channel that includes all the users.
1412 let channel_id = db.create_org_channel(org_id, "test-channel").await.unwrap();
1413 db.add_channel_member(channel_id, user_id_a, false)
1414 .await
1415 .unwrap();
1416 db.add_channel_member(channel_id, user_id_b, false)
1417 .await
1418 .unwrap();
1419 db.create_channel_message(
1420 channel_id,
1421 user_id_b,
1422 "hello A, it's B.",
1423 OffsetDateTime::now_utc(),
1424 )
1425 .await
1426 .unwrap();
1427
1428 let channels_a = cx_a.add_model(|cx| ChannelList::new(client_a, cx));
1429 channels_a
1430 .condition(&mut cx_a, |list, _| list.available_channels().is_some())
1431 .await;
1432 channels_a.read_with(&cx_a, |list, _| {
1433 assert_eq!(
1434 list.available_channels().unwrap(),
1435 &[ChannelDetails {
1436 id: channel_id.to_proto(),
1437 name: "test-channel".to_string()
1438 }]
1439 )
1440 });
1441 let channel_a = channels_a.update(&mut cx_a, |this, cx| {
1442 this.get_channel(channel_id.to_proto(), cx).unwrap()
1443 });
1444 channel_a.read_with(&cx_a, |channel, _| assert!(channel.messages().is_empty()));
1445 channel_a
1446 .condition(&cx_a, |channel, _| {
1447 channel_messages(channel)
1448 == [(user_id_b.to_proto(), "hello A, it's B.".to_string())]
1449 })
1450 .await;
1451
1452 let channels_b = cx_b.add_model(|cx| ChannelList::new(client_b, cx));
1453 channels_b
1454 .condition(&mut cx_b, |list, _| list.available_channels().is_some())
1455 .await;
1456 channels_b.read_with(&cx_b, |list, _| {
1457 assert_eq!(
1458 list.available_channels().unwrap(),
1459 &[ChannelDetails {
1460 id: channel_id.to_proto(),
1461 name: "test-channel".to_string()
1462 }]
1463 )
1464 });
1465
1466 let channel_b = channels_b.update(&mut cx_b, |this, cx| {
1467 this.get_channel(channel_id.to_proto(), cx).unwrap()
1468 });
1469 channel_b.read_with(&cx_b, |channel, _| assert!(channel.messages().is_empty()));
1470 channel_b
1471 .condition(&cx_b, |channel, _| {
1472 channel_messages(channel)
1473 == [(user_id_b.to_proto(), "hello A, it's B.".to_string())]
1474 })
1475 .await;
1476
1477 channel_a.update(&mut cx_a, |channel, cx| {
1478 channel.send_message("oh, hi B.".to_string(), cx).unwrap();
1479 channel.send_message("sup".to_string(), cx).unwrap();
1480 assert_eq!(
1481 channel
1482 .pending_messages()
1483 .iter()
1484 .map(|m| &m.body)
1485 .collect::<Vec<_>>(),
1486 &["oh, hi B.", "sup"]
1487 )
1488 });
1489
1490 channel_a
1491 .condition(&cx_a, |channel, _| channel.pending_messages().is_empty())
1492 .await;
1493 channel_b
1494 .condition(&cx_b, |channel, _| {
1495 channel_messages(channel)
1496 == [
1497 (user_id_b.to_proto(), "hello A, it's B.".to_string()),
1498 (user_id_a.to_proto(), "oh, hi B.".to_string()),
1499 (user_id_a.to_proto(), "sup".to_string()),
1500 ]
1501 })
1502 .await;
1503
1504 assert_eq!(
1505 server.state().await.channels[&channel_id]
1506 .connection_ids
1507 .len(),
1508 2
1509 );
1510 cx_b.update(|_| drop(channel_b));
1511 server
1512 .condition(|state| state.channels[&channel_id].connection_ids.len() == 1)
1513 .await;
1514
1515 cx_a.update(|_| drop(channel_a));
1516 server
1517 .condition(|state| !state.channels.contains_key(&channel_id))
1518 .await;
1519
1520 fn channel_messages(channel: &Channel) -> Vec<(u64, String)> {
1521 channel
1522 .messages()
1523 .cursor::<(), ()>()
1524 .map(|m| (m.sender_id, m.body.clone()))
1525 .collect()
1526 }
1527 }
1528
1529 struct TestServer {
1530 peer: Arc<Peer>,
1531 app_state: Arc<AppState>,
1532 server: Arc<Server>,
1533 db_name: String,
1534 notifications: mpsc::Receiver<()>,
1535 }
1536
1537 impl TestServer {
1538 async fn start() -> Self {
1539 let mut rng = StdRng::from_entropy();
1540 let db_name = format!("zed-test-{}", rng.gen::<u128>());
1541 let app_state = Self::build_app_state(&db_name).await;
1542 let peer = Peer::new();
1543 let notifications = mpsc::channel(128);
1544 let server = Server::new(app_state.clone(), peer.clone(), Some(notifications.0));
1545 Self {
1546 peer,
1547 app_state,
1548 server,
1549 db_name,
1550 notifications: notifications.1,
1551 }
1552 }
1553
1554 async fn create_client(
1555 &mut self,
1556 cx: &mut TestAppContext,
1557 name: &str,
1558 ) -> (UserId, Arc<Client>) {
1559 let user_id = self.app_state.db.create_user(name, false).await.unwrap();
1560 let client = Client::new();
1561 let (client_conn, server_conn) = test::Channel::bidirectional();
1562 cx.background()
1563 .spawn(
1564 self.server
1565 .handle_connection(server_conn, name.to_string(), user_id),
1566 )
1567 .detach();
1568 client
1569 .add_connection(user_id.to_proto(), client_conn, cx.to_async())
1570 .await
1571 .unwrap();
1572 (user_id, client)
1573 }
1574
1575 async fn build_app_state(db_name: &str) -> Arc<AppState> {
1576 let mut config = Config::default();
1577 config.session_secret = "a".repeat(32);
1578 config.database_url = format!("postgres://postgres@localhost/{}", db_name);
1579
1580 Self::create_db(&config.database_url);
1581 let db = db::Db::test(&config.database_url, 5);
1582 db.migrate(Path::new(concat!(
1583 env!("CARGO_MANIFEST_DIR"),
1584 "/migrations"
1585 )));
1586
1587 let github_client = github::AppClient::test();
1588 Arc::new(AppState {
1589 db,
1590 handlebars: Default::default(),
1591 auth_client: auth::build_client("", ""),
1592 repo_client: github::RepoClient::test(&github_client),
1593 github_client,
1594 config,
1595 })
1596 }
1597
1598 fn create_db(url: &str) {
1599 // Enable tests to run in parallel by serializing the creation of each test database.
1600 lazy_static::lazy_static! {
1601 static ref DB_CREATION: std::sync::Mutex<()> = std::sync::Mutex::new(());
1602 }
1603
1604 let _lock = DB_CREATION.lock();
1605 block_on(Postgres::create_database(url)).expect("failed to create test database");
1606 }
1607
1608 async fn state<'a>(&'a self) -> RwLockReadGuard<'a, ServerState> {
1609 self.server.state.read().await
1610 }
1611
1612 async fn condition<F>(&mut self, mut predicate: F)
1613 where
1614 F: FnMut(&ServerState) -> bool,
1615 {
1616 async_std::future::timeout(Duration::from_millis(500), async {
1617 while !(predicate)(&*self.server.state.read().await) {
1618 self.notifications.recv().await;
1619 }
1620 })
1621 .await
1622 .expect("condition timed out");
1623 }
1624 }
1625
1626 impl Drop for TestServer {
1627 fn drop(&mut self) {
1628 task::block_on(async {
1629 self.peer.reset().await;
1630 self.app_state.db.close(&self.db_name).await;
1631 Postgres::drop_database(&self.app_state.config.database_url)
1632 .await
1633 .unwrap();
1634 });
1635 }
1636 }
1637
1638 struct EmptyView;
1639
1640 impl gpui::Entity for EmptyView {
1641 type Event = ();
1642 }
1643
1644 impl gpui::View for EmptyView {
1645 fn ui_name() -> &'static str {
1646 "empty view"
1647 }
1648
1649 fn render<'a>(&self, _: &gpui::RenderContext<Self>) -> gpui::ElementBox {
1650 gpui::Element::boxed(gpui::elements::Empty)
1651 }
1652 }
1653}