1use super::{
2 auth,
3 db::{ChannelId, MessageId, UserId},
4 AppState,
5};
6use anyhow::anyhow;
7use async_std::{sync::RwLock, task};
8use async_tungstenite::{
9 tungstenite::{protocol::Role, Error as WebSocketError, Message as WebSocketMessage},
10 WebSocketStream,
11};
12use futures::{future::BoxFuture, FutureExt};
13use postage::{mpsc, prelude::Sink as _, prelude::Stream as _};
14use sha1::{Digest as _, Sha1};
15use std::{
16 any::TypeId,
17 collections::{hash_map, HashMap, HashSet},
18 future::Future,
19 mem,
20 sync::Arc,
21 time::Instant,
22};
23use surf::StatusCode;
24use tide::log;
25use tide::{
26 http::headers::{HeaderName, CONNECTION, UPGRADE},
27 Request, Response,
28};
29use time::OffsetDateTime;
30use zrpc::{
31 auth::random_token,
32 proto::{self, AnyTypedEnvelope, EnvelopedMessage},
33 ConnectionId, Peer, TypedEnvelope,
34};
35
36type ReplicaId = u16;
37
38type MessageHandler = Box<
39 dyn Send
40 + Sync
41 + Fn(Arc<Server>, Box<dyn AnyTypedEnvelope>) -> BoxFuture<'static, tide::Result<()>>,
42>;
43
44pub struct Server {
45 peer: Arc<Peer>,
46 state: RwLock<ServerState>,
47 app_state: Arc<AppState>,
48 handlers: HashMap<TypeId, MessageHandler>,
49 notifications: Option<mpsc::Sender<()>>,
50}
51
52#[derive(Default)]
53struct ServerState {
54 connections: HashMap<ConnectionId, Connection>,
55 pub worktrees: HashMap<u64, Worktree>,
56 channels: HashMap<ChannelId, Channel>,
57 next_worktree_id: u64,
58}
59
60struct Connection {
61 user_id: UserId,
62 worktrees: HashSet<u64>,
63 channels: HashSet<ChannelId>,
64}
65
66struct Worktree {
67 host_connection_id: Option<ConnectionId>,
68 guest_connection_ids: HashMap<ConnectionId, ReplicaId>,
69 active_replica_ids: HashSet<ReplicaId>,
70 access_token: String,
71 root_name: String,
72 entries: HashMap<u64, proto::Entry>,
73}
74
75#[derive(Default)]
76struct Channel {
77 connection_ids: HashSet<ConnectionId>,
78}
79
80const MESSAGE_COUNT_PER_PAGE: usize = 100;
81const MAX_MESSAGE_LEN: usize = 1024;
82
83impl Server {
84 pub fn new(
85 app_state: Arc<AppState>,
86 peer: Arc<Peer>,
87 notifications: Option<mpsc::Sender<()>>,
88 ) -> Arc<Self> {
89 let mut server = Self {
90 peer,
91 app_state,
92 state: Default::default(),
93 handlers: Default::default(),
94 notifications,
95 };
96
97 server
98 .add_handler(Server::share_worktree)
99 .add_handler(Server::join_worktree)
100 .add_handler(Server::update_worktree)
101 .add_handler(Server::close_worktree)
102 .add_handler(Server::open_buffer)
103 .add_handler(Server::close_buffer)
104 .add_handler(Server::update_buffer)
105 .add_handler(Server::buffer_saved)
106 .add_handler(Server::save_buffer)
107 .add_handler(Server::get_channels)
108 .add_handler(Server::get_users)
109 .add_handler(Server::join_channel)
110 .add_handler(Server::leave_channel)
111 .add_handler(Server::send_channel_message)
112 .add_handler(Server::get_channel_messages);
113
114 Arc::new(server)
115 }
116
117 fn add_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
118 where
119 F: 'static + Send + Sync + Fn(Arc<Self>, TypedEnvelope<M>) -> Fut,
120 Fut: 'static + Send + Future<Output = tide::Result<()>>,
121 M: EnvelopedMessage,
122 {
123 let prev_handler = self.handlers.insert(
124 TypeId::of::<M>(),
125 Box::new(move |server, envelope| {
126 let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
127 (handler)(server, *envelope).boxed()
128 }),
129 );
130 if prev_handler.is_some() {
131 panic!("registered a handler for the same message twice");
132 }
133 self
134 }
135
136 pub fn handle_connection<Conn>(
137 self: &Arc<Self>,
138 connection: Conn,
139 addr: String,
140 user_id: UserId,
141 ) -> impl Future<Output = ()>
142 where
143 Conn: 'static
144 + futures::Sink<WebSocketMessage, Error = WebSocketError>
145 + futures::Stream<Item = Result<WebSocketMessage, WebSocketError>>
146 + Send
147 + Unpin,
148 {
149 let this = self.clone();
150 async move {
151 let (connection_id, handle_io, mut incoming_rx) =
152 this.peer.add_connection(connection).await;
153 this.add_connection(connection_id, user_id).await;
154
155 let handle_io = handle_io.fuse();
156 futures::pin_mut!(handle_io);
157 loop {
158 let next_message = incoming_rx.recv().fuse();
159 futures::pin_mut!(next_message);
160 futures::select_biased! {
161 message = next_message => {
162 if let Some(message) = message {
163 let start_time = Instant::now();
164 log::info!("RPC message received: {}", message.payload_type_name());
165 if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
166 if let Err(err) = (handler)(this.clone(), message).await {
167 log::error!("error handling message: {:?}", err);
168 } else {
169 log::info!("RPC message handled. duration:{:?}", start_time.elapsed());
170 }
171
172 if let Some(mut notifications) = this.notifications.clone() {
173 let _ = notifications.send(()).await;
174 }
175 } else {
176 log::warn!("unhandled message: {}", message.payload_type_name());
177 }
178 } else {
179 log::info!("rpc connection closed {:?}", addr);
180 break;
181 }
182 }
183 handle_io = handle_io => {
184 if let Err(err) = handle_io {
185 log::error!("error handling rpc connection {:?} - {:?}", addr, err);
186 }
187 break;
188 }
189 }
190 }
191
192 if let Err(err) = this.sign_out(connection_id).await {
193 log::error!("error signing out connection {:?} - {:?}", addr, err);
194 }
195 }
196 }
197
198 async fn sign_out(self: &Arc<Self>, connection_id: zrpc::ConnectionId) -> tide::Result<()> {
199 self.peer.disconnect(connection_id).await;
200 let worktree_ids = self.remove_connection(connection_id).await;
201 for worktree_id in worktree_ids {
202 let state = self.state.read().await;
203 if let Some(worktree) = state.worktrees.get(&worktree_id) {
204 broadcast(connection_id, worktree.connection_ids(), |conn_id| {
205 self.peer.send(
206 conn_id,
207 proto::RemovePeer {
208 worktree_id,
209 peer_id: connection_id.0,
210 },
211 )
212 })
213 .await?;
214 }
215 }
216 Ok(())
217 }
218
219 // Add a new connection associated with a given user.
220 async fn add_connection(&self, connection_id: ConnectionId, user_id: UserId) {
221 self.state.write().await.connections.insert(
222 connection_id,
223 Connection {
224 user_id,
225 worktrees: Default::default(),
226 channels: Default::default(),
227 },
228 );
229 }
230
231 // Remove the given connection and its association with any worktrees.
232 async fn remove_connection(&self, connection_id: ConnectionId) -> Vec<u64> {
233 let mut worktree_ids = Vec::new();
234 let mut state = self.state.write().await;
235 if let Some(connection) = state.connections.remove(&connection_id) {
236 for channel_id in connection.channels {
237 if let Some(channel) = state.channels.get_mut(&channel_id) {
238 channel.connection_ids.remove(&connection_id);
239 }
240 }
241 for worktree_id in connection.worktrees {
242 if let Some(worktree) = state.worktrees.get_mut(&worktree_id) {
243 if worktree.host_connection_id == Some(connection_id) {
244 worktree_ids.push(worktree_id);
245 } else if let Some(replica_id) =
246 worktree.guest_connection_ids.remove(&connection_id)
247 {
248 worktree.active_replica_ids.remove(&replica_id);
249 worktree_ids.push(worktree_id);
250 }
251 }
252 }
253 }
254 worktree_ids
255 }
256
257 async fn share_worktree(
258 self: Arc<Server>,
259 mut request: TypedEnvelope<proto::ShareWorktree>,
260 ) -> tide::Result<()> {
261 let mut state = self.state.write().await;
262 let worktree_id = state.next_worktree_id;
263 state.next_worktree_id += 1;
264 let access_token = random_token();
265 let worktree = request
266 .payload
267 .worktree
268 .as_mut()
269 .ok_or_else(|| anyhow!("missing worktree"))?;
270 let entries = mem::take(&mut worktree.entries)
271 .into_iter()
272 .map(|entry| (entry.id, entry))
273 .collect();
274 state.worktrees.insert(
275 worktree_id,
276 Worktree {
277 host_connection_id: Some(request.sender_id),
278 guest_connection_ids: Default::default(),
279 active_replica_ids: Default::default(),
280 access_token: access_token.clone(),
281 root_name: mem::take(&mut worktree.root_name),
282 entries,
283 },
284 );
285
286 self.peer
287 .respond(
288 request.receipt(),
289 proto::ShareWorktreeResponse {
290 worktree_id,
291 access_token,
292 },
293 )
294 .await?;
295 Ok(())
296 }
297
298 async fn join_worktree(
299 self: Arc<Server>,
300 request: TypedEnvelope<proto::OpenWorktree>,
301 ) -> tide::Result<()> {
302 let worktree_id = request.payload.worktree_id;
303 let access_token = &request.payload.access_token;
304
305 let mut state = self.state.write().await;
306 if let Some((peer_replica_id, worktree)) =
307 state.join_worktree(request.sender_id, worktree_id, access_token)
308 {
309 let mut peers = Vec::new();
310 if let Some(host_connection_id) = worktree.host_connection_id {
311 peers.push(proto::Peer {
312 peer_id: host_connection_id.0,
313 replica_id: 0,
314 });
315 }
316 for (peer_conn_id, peer_replica_id) in &worktree.guest_connection_ids {
317 if *peer_conn_id != request.sender_id {
318 peers.push(proto::Peer {
319 peer_id: peer_conn_id.0,
320 replica_id: *peer_replica_id as u32,
321 });
322 }
323 }
324
325 broadcast(request.sender_id, worktree.connection_ids(), |conn_id| {
326 self.peer.send(
327 conn_id,
328 proto::AddPeer {
329 worktree_id,
330 peer: Some(proto::Peer {
331 peer_id: request.sender_id.0,
332 replica_id: peer_replica_id as u32,
333 }),
334 },
335 )
336 })
337 .await?;
338 self.peer
339 .respond(
340 request.receipt(),
341 proto::OpenWorktreeResponse {
342 worktree_id,
343 worktree: Some(proto::Worktree {
344 root_name: worktree.root_name.clone(),
345 entries: worktree.entries.values().cloned().collect(),
346 }),
347 replica_id: peer_replica_id as u32,
348 peers,
349 },
350 )
351 .await?;
352 } else {
353 self.peer
354 .respond(
355 request.receipt(),
356 proto::OpenWorktreeResponse {
357 worktree_id,
358 worktree: None,
359 replica_id: 0,
360 peers: Vec::new(),
361 },
362 )
363 .await?;
364 }
365
366 Ok(())
367 }
368
369 async fn update_worktree(
370 self: Arc<Server>,
371 request: TypedEnvelope<proto::UpdateWorktree>,
372 ) -> tide::Result<()> {
373 {
374 let mut state = self.state.write().await;
375 let worktree = state.write_worktree(request.payload.worktree_id, request.sender_id)?;
376 for entry_id in &request.payload.removed_entries {
377 worktree.entries.remove(&entry_id);
378 }
379
380 for entry in &request.payload.updated_entries {
381 worktree.entries.insert(entry.id, entry.clone());
382 }
383 }
384
385 self.broadcast_in_worktree(request.payload.worktree_id, &request)
386 .await?;
387 Ok(())
388 }
389
390 async fn close_worktree(
391 self: Arc<Server>,
392 request: TypedEnvelope<proto::CloseWorktree>,
393 ) -> tide::Result<()> {
394 let connection_ids;
395 {
396 let mut state = self.state.write().await;
397 let worktree = state.write_worktree(request.payload.worktree_id, request.sender_id)?;
398 connection_ids = worktree.connection_ids();
399 if worktree.host_connection_id == Some(request.sender_id) {
400 worktree.host_connection_id = None;
401 } else if let Some(replica_id) =
402 worktree.guest_connection_ids.remove(&request.sender_id)
403 {
404 worktree.active_replica_ids.remove(&replica_id);
405 }
406 }
407
408 broadcast(request.sender_id, connection_ids, |conn_id| {
409 self.peer.send(
410 conn_id,
411 proto::RemovePeer {
412 worktree_id: request.payload.worktree_id,
413 peer_id: request.sender_id.0,
414 },
415 )
416 })
417 .await?;
418
419 Ok(())
420 }
421
422 async fn open_buffer(
423 self: Arc<Server>,
424 request: TypedEnvelope<proto::OpenBuffer>,
425 ) -> tide::Result<()> {
426 let receipt = request.receipt();
427 let worktree_id = request.payload.worktree_id;
428 let host_connection_id = self
429 .state
430 .read()
431 .await
432 .read_worktree(worktree_id, request.sender_id)?
433 .host_connection_id()?;
434
435 let response = self
436 .peer
437 .forward_request(request.sender_id, host_connection_id, request.payload)
438 .await?;
439 self.peer.respond(receipt, response).await?;
440 Ok(())
441 }
442
443 async fn close_buffer(
444 self: Arc<Server>,
445 request: TypedEnvelope<proto::CloseBuffer>,
446 ) -> tide::Result<()> {
447 let host_connection_id = self
448 .state
449 .read()
450 .await
451 .read_worktree(request.payload.worktree_id, request.sender_id)?
452 .host_connection_id()?;
453
454 self.peer
455 .forward_send(request.sender_id, host_connection_id, request.payload)
456 .await?;
457
458 Ok(())
459 }
460
461 async fn save_buffer(
462 self: Arc<Server>,
463 request: TypedEnvelope<proto::SaveBuffer>,
464 ) -> tide::Result<()> {
465 let host;
466 let guests;
467 {
468 let state = self.state.read().await;
469 let worktree = state.read_worktree(request.payload.worktree_id, request.sender_id)?;
470 host = worktree.host_connection_id()?;
471 guests = worktree
472 .guest_connection_ids
473 .keys()
474 .copied()
475 .collect::<Vec<_>>();
476 }
477
478 let sender = request.sender_id;
479 let receipt = request.receipt();
480 let response = self
481 .peer
482 .forward_request(sender, host, request.payload.clone())
483 .await?;
484
485 broadcast(host, guests, |conn_id| {
486 let response = response.clone();
487 let peer = &self.peer;
488 async move {
489 if conn_id == sender {
490 peer.respond(receipt, response).await
491 } else {
492 peer.forward_send(host, conn_id, response).await
493 }
494 }
495 })
496 .await?;
497
498 Ok(())
499 }
500
501 async fn update_buffer(
502 self: Arc<Server>,
503 request: TypedEnvelope<proto::UpdateBuffer>,
504 ) -> tide::Result<()> {
505 self.broadcast_in_worktree(request.payload.worktree_id, &request)
506 .await
507 }
508
509 async fn buffer_saved(
510 self: Arc<Server>,
511 request: TypedEnvelope<proto::BufferSaved>,
512 ) -> tide::Result<()> {
513 self.broadcast_in_worktree(request.payload.worktree_id, &request)
514 .await
515 }
516
517 async fn get_channels(
518 self: Arc<Server>,
519 request: TypedEnvelope<proto::GetChannels>,
520 ) -> tide::Result<()> {
521 let user_id = self
522 .state
523 .read()
524 .await
525 .user_id_for_connection(request.sender_id)?;
526 let channels = self.app_state.db.get_accessible_channels(user_id).await?;
527 self.peer
528 .respond(
529 request.receipt(),
530 proto::GetChannelsResponse {
531 channels: channels
532 .into_iter()
533 .map(|chan| proto::Channel {
534 id: chan.id.to_proto(),
535 name: chan.name,
536 })
537 .collect(),
538 },
539 )
540 .await?;
541 Ok(())
542 }
543
544 async fn get_users(
545 self: Arc<Server>,
546 request: TypedEnvelope<proto::GetUsers>,
547 ) -> tide::Result<()> {
548 let user_id = self
549 .state
550 .read()
551 .await
552 .user_id_for_connection(request.sender_id)?;
553 let receipt = request.receipt();
554 let user_ids = request.payload.user_ids.into_iter().map(UserId::from_proto);
555 let users = self
556 .app_state
557 .db
558 .get_users_by_ids(user_id, user_ids)
559 .await?
560 .into_iter()
561 .map(|user| proto::User {
562 id: user.id.to_proto(),
563 github_login: user.github_login,
564 avatar_url: String::new(),
565 })
566 .collect();
567 self.peer
568 .respond(receipt, proto::GetUsersResponse { users })
569 .await?;
570 Ok(())
571 }
572
573 async fn join_channel(
574 self: Arc<Self>,
575 request: TypedEnvelope<proto::JoinChannel>,
576 ) -> tide::Result<()> {
577 let user_id = self
578 .state
579 .read()
580 .await
581 .user_id_for_connection(request.sender_id)?;
582 let channel_id = ChannelId::from_proto(request.payload.channel_id);
583 if !self
584 .app_state
585 .db
586 .can_user_access_channel(user_id, channel_id)
587 .await?
588 {
589 Err(anyhow!("access denied"))?;
590 }
591
592 self.state
593 .write()
594 .await
595 .join_channel(request.sender_id, channel_id);
596 let messages = self
597 .app_state
598 .db
599 .get_channel_messages(channel_id, MESSAGE_COUNT_PER_PAGE, None)
600 .await?
601 .into_iter()
602 .map(|msg| proto::ChannelMessage {
603 id: msg.id.to_proto(),
604 body: msg.body,
605 timestamp: msg.sent_at.unix_timestamp() as u64,
606 sender_id: msg.sender_id.to_proto(),
607 })
608 .collect::<Vec<_>>();
609 self.peer
610 .respond(
611 request.receipt(),
612 proto::JoinChannelResponse {
613 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
614 messages,
615 },
616 )
617 .await?;
618 Ok(())
619 }
620
621 async fn leave_channel(
622 self: Arc<Self>,
623 request: TypedEnvelope<proto::LeaveChannel>,
624 ) -> tide::Result<()> {
625 let user_id = self
626 .state
627 .read()
628 .await
629 .user_id_for_connection(request.sender_id)?;
630 let channel_id = ChannelId::from_proto(request.payload.channel_id);
631 if !self
632 .app_state
633 .db
634 .can_user_access_channel(user_id, channel_id)
635 .await?
636 {
637 Err(anyhow!("access denied"))?;
638 }
639
640 self.state
641 .write()
642 .await
643 .leave_channel(request.sender_id, channel_id);
644
645 Ok(())
646 }
647
648 async fn send_channel_message(
649 self: Arc<Self>,
650 request: TypedEnvelope<proto::SendChannelMessage>,
651 ) -> tide::Result<()> {
652 let receipt = request.receipt();
653 let channel_id = ChannelId::from_proto(request.payload.channel_id);
654 let user_id;
655 let connection_ids;
656 {
657 let state = self.state.read().await;
658 user_id = state.user_id_for_connection(request.sender_id)?;
659 if let Some(channel) = state.channels.get(&channel_id) {
660 connection_ids = channel.connection_ids();
661 } else {
662 return Ok(());
663 }
664 }
665
666 // Validate the message body.
667 let body = request.payload.body.trim().to_string();
668 if body.len() > MAX_MESSAGE_LEN {
669 self.peer
670 .respond_with_error(
671 receipt,
672 proto::Error {
673 message: "message is too long".to_string(),
674 },
675 )
676 .await?;
677 return Ok(());
678 }
679 if body.is_empty() {
680 self.peer
681 .respond_with_error(
682 receipt,
683 proto::Error {
684 message: "message can't be blank".to_string(),
685 },
686 )
687 .await?;
688 return Ok(());
689 }
690
691 let timestamp = OffsetDateTime::now_utc();
692 let message_id = self
693 .app_state
694 .db
695 .create_channel_message(channel_id, user_id, &body, timestamp)
696 .await?
697 .to_proto();
698 let message = proto::ChannelMessage {
699 sender_id: user_id.to_proto(),
700 id: message_id,
701 body,
702 timestamp: timestamp.unix_timestamp() as u64,
703 };
704 broadcast(request.sender_id, connection_ids, |conn_id| {
705 self.peer.send(
706 conn_id,
707 proto::ChannelMessageSent {
708 channel_id: channel_id.to_proto(),
709 message: Some(message.clone()),
710 },
711 )
712 })
713 .await?;
714 self.peer
715 .respond(
716 receipt,
717 proto::SendChannelMessageResponse {
718 message: Some(message),
719 },
720 )
721 .await?;
722 Ok(())
723 }
724
725 async fn get_channel_messages(
726 self: Arc<Self>,
727 request: TypedEnvelope<proto::GetChannelMessages>,
728 ) -> tide::Result<()> {
729 let user_id = self
730 .state
731 .read()
732 .await
733 .user_id_for_connection(request.sender_id)?;
734 let channel_id = ChannelId::from_proto(request.payload.channel_id);
735 if !self
736 .app_state
737 .db
738 .can_user_access_channel(user_id, channel_id)
739 .await?
740 {
741 Err(anyhow!("access denied"))?;
742 }
743
744 let messages = self
745 .app_state
746 .db
747 .get_channel_messages(
748 channel_id,
749 MESSAGE_COUNT_PER_PAGE,
750 Some(MessageId::from_proto(request.payload.before_message_id)),
751 )
752 .await?
753 .into_iter()
754 .map(|msg| proto::ChannelMessage {
755 id: msg.id.to_proto(),
756 body: msg.body,
757 timestamp: msg.sent_at.unix_timestamp() as u64,
758 sender_id: msg.sender_id.to_proto(),
759 })
760 .collect::<Vec<_>>();
761 self.peer
762 .respond(
763 request.receipt(),
764 proto::GetChannelMessagesResponse {
765 done: messages.len() < MESSAGE_COUNT_PER_PAGE,
766 messages,
767 },
768 )
769 .await?;
770 Ok(())
771 }
772
773 async fn broadcast_in_worktree<T: proto::EnvelopedMessage>(
774 &self,
775 worktree_id: u64,
776 message: &TypedEnvelope<T>,
777 ) -> tide::Result<()> {
778 let connection_ids = self
779 .state
780 .read()
781 .await
782 .read_worktree(worktree_id, message.sender_id)?
783 .connection_ids();
784
785 broadcast(message.sender_id, connection_ids, |conn_id| {
786 self.peer
787 .forward_send(message.sender_id, conn_id, message.payload.clone())
788 })
789 .await?;
790
791 Ok(())
792 }
793}
794
795pub async fn broadcast<F, T>(
796 sender_id: ConnectionId,
797 receiver_ids: Vec<ConnectionId>,
798 mut f: F,
799) -> anyhow::Result<()>
800where
801 F: FnMut(ConnectionId) -> T,
802 T: Future<Output = anyhow::Result<()>>,
803{
804 let futures = receiver_ids
805 .into_iter()
806 .filter(|id| *id != sender_id)
807 .map(|id| f(id));
808 futures::future::try_join_all(futures).await?;
809 Ok(())
810}
811
812impl ServerState {
813 fn join_channel(&mut self, connection_id: ConnectionId, channel_id: ChannelId) {
814 if let Some(connection) = self.connections.get_mut(&connection_id) {
815 connection.channels.insert(channel_id);
816 self.channels
817 .entry(channel_id)
818 .or_default()
819 .connection_ids
820 .insert(connection_id);
821 }
822 }
823
824 fn leave_channel(&mut self, connection_id: ConnectionId, channel_id: ChannelId) {
825 if let Some(connection) = self.connections.get_mut(&connection_id) {
826 connection.channels.remove(&channel_id);
827 if let hash_map::Entry::Occupied(mut entry) = self.channels.entry(channel_id) {
828 entry.get_mut().connection_ids.remove(&connection_id);
829 if entry.get_mut().connection_ids.is_empty() {
830 entry.remove();
831 }
832 }
833 }
834 }
835
836 fn user_id_for_connection(&self, connection_id: ConnectionId) -> tide::Result<UserId> {
837 Ok(self
838 .connections
839 .get(&connection_id)
840 .ok_or_else(|| anyhow!("unknown connection"))?
841 .user_id)
842 }
843
844 // Add the given connection as a guest of the given worktree
845 fn join_worktree(
846 &mut self,
847 connection_id: ConnectionId,
848 worktree_id: u64,
849 access_token: &str,
850 ) -> Option<(ReplicaId, &Worktree)> {
851 if let Some(worktree) = self.worktrees.get_mut(&worktree_id) {
852 if access_token == worktree.access_token {
853 if let Some(connection) = self.connections.get_mut(&connection_id) {
854 connection.worktrees.insert(worktree_id);
855 }
856
857 let mut replica_id = 1;
858 while worktree.active_replica_ids.contains(&replica_id) {
859 replica_id += 1;
860 }
861 worktree.active_replica_ids.insert(replica_id);
862 worktree
863 .guest_connection_ids
864 .insert(connection_id, replica_id);
865 Some((replica_id, worktree))
866 } else {
867 None
868 }
869 } else {
870 None
871 }
872 }
873
874 fn read_worktree(
875 &self,
876 worktree_id: u64,
877 connection_id: ConnectionId,
878 ) -> tide::Result<&Worktree> {
879 let worktree = self
880 .worktrees
881 .get(&worktree_id)
882 .ok_or_else(|| anyhow!("worktree not found"))?;
883
884 if worktree.host_connection_id == Some(connection_id)
885 || worktree.guest_connection_ids.contains_key(&connection_id)
886 {
887 Ok(worktree)
888 } else {
889 Err(anyhow!(
890 "{} is not a member of worktree {}",
891 connection_id,
892 worktree_id
893 ))?
894 }
895 }
896
897 fn write_worktree(
898 &mut self,
899 worktree_id: u64,
900 connection_id: ConnectionId,
901 ) -> tide::Result<&mut Worktree> {
902 let worktree = self
903 .worktrees
904 .get_mut(&worktree_id)
905 .ok_or_else(|| anyhow!("worktree not found"))?;
906
907 if worktree.host_connection_id == Some(connection_id)
908 || worktree.guest_connection_ids.contains_key(&connection_id)
909 {
910 Ok(worktree)
911 } else {
912 Err(anyhow!(
913 "{} is not a member of worktree {}",
914 connection_id,
915 worktree_id
916 ))?
917 }
918 }
919}
920
921impl Worktree {
922 pub fn connection_ids(&self) -> Vec<ConnectionId> {
923 self.guest_connection_ids
924 .keys()
925 .copied()
926 .chain(self.host_connection_id)
927 .collect()
928 }
929
930 fn host_connection_id(&self) -> tide::Result<ConnectionId> {
931 Ok(self
932 .host_connection_id
933 .ok_or_else(|| anyhow!("host disconnected from worktree"))?)
934 }
935}
936
937impl Channel {
938 fn connection_ids(&self) -> Vec<ConnectionId> {
939 self.connection_ids.iter().copied().collect()
940 }
941}
942
943pub fn add_routes(app: &mut tide::Server<Arc<AppState>>, rpc: &Arc<Peer>) {
944 let server = Server::new(app.state().clone(), rpc.clone(), None);
945 app.at("/rpc").with(auth::VerifyToken).get(move |request: Request<Arc<AppState>>| {
946 let user_id = request.ext::<UserId>().copied();
947 let server = server.clone();
948 async move {
949 const WEBSOCKET_GUID: &str = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
950
951 let connection_upgrade = header_contains_ignore_case(&request, CONNECTION, "upgrade");
952 let upgrade_to_websocket = header_contains_ignore_case(&request, UPGRADE, "websocket");
953 let upgrade_requested = connection_upgrade && upgrade_to_websocket;
954
955 if !upgrade_requested {
956 return Ok(Response::new(StatusCode::UpgradeRequired));
957 }
958
959 let header = match request.header("Sec-Websocket-Key") {
960 Some(h) => h.as_str(),
961 None => return Err(anyhow!("expected sec-websocket-key"))?,
962 };
963
964 let mut response = Response::new(StatusCode::SwitchingProtocols);
965 response.insert_header(UPGRADE, "websocket");
966 response.insert_header(CONNECTION, "Upgrade");
967 let hash = Sha1::new().chain(header).chain(WEBSOCKET_GUID).finalize();
968 response.insert_header("Sec-Websocket-Accept", base64::encode(&hash[..]));
969 response.insert_header("Sec-Websocket-Version", "13");
970
971 let http_res: &mut tide::http::Response = response.as_mut();
972 let upgrade_receiver = http_res.recv_upgrade().await;
973 let addr = request.remote().unwrap_or("unknown").to_string();
974 let user_id = user_id.ok_or_else(|| anyhow!("user_id is not present on request. ensure auth::VerifyToken middleware is present"))?;
975 task::spawn(async move {
976 if let Some(stream) = upgrade_receiver.await {
977 let stream = WebSocketStream::from_raw_socket(stream, Role::Server, None).await;
978 server.handle_connection(stream, addr, user_id).await;
979 }
980 });
981
982 Ok(response)
983 }
984 });
985}
986
987fn header_contains_ignore_case<T>(
988 request: &tide::Request<T>,
989 header_name: HeaderName,
990 value: &str,
991) -> bool {
992 request
993 .header(header_name)
994 .map(|h| {
995 h.as_str()
996 .split(',')
997 .any(|s| s.trim().eq_ignore_ascii_case(value.trim()))
998 })
999 .unwrap_or(false)
1000}
1001
1002#[cfg(test)]
1003mod tests {
1004 use super::*;
1005 use crate::{
1006 auth,
1007 db::{tests::TestDb, UserId},
1008 github, AppState, Config,
1009 };
1010 use async_std::{sync::RwLockReadGuard, task};
1011 use gpui::TestAppContext;
1012 use postage::mpsc;
1013 use serde_json::json;
1014 use sqlx::types::time::OffsetDateTime;
1015 use std::{path::Path, sync::Arc, time::Duration};
1016 use zed::{
1017 channel::{Channel, ChannelDetails, ChannelList},
1018 editor::{Editor, Insert},
1019 fs::{FakeFs, Fs as _},
1020 language::LanguageRegistry,
1021 rpc::Client,
1022 settings, test,
1023 user::UserStore,
1024 worktree::Worktree,
1025 };
1026 use zrpc::Peer;
1027
1028 #[gpui::test]
1029 async fn test_share_worktree(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1030 let (window_b, _) = cx_b.add_window(|_| EmptyView);
1031 let settings = cx_b.read(settings::test).1;
1032 let lang_registry = Arc::new(LanguageRegistry::new());
1033
1034 // Connect to a server as 2 clients.
1035 let mut server = TestServer::start().await;
1036 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1037 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1038
1039 cx_a.foreground().forbid_parking();
1040
1041 // Share a local worktree as client A
1042 let fs = Arc::new(FakeFs::new());
1043 fs.insert_tree(
1044 "/a",
1045 json!({
1046 "a.txt": "a-contents",
1047 "b.txt": "b-contents",
1048 }),
1049 )
1050 .await;
1051 let worktree_a = Worktree::open_local(
1052 "/a".as_ref(),
1053 lang_registry.clone(),
1054 fs,
1055 &mut cx_a.to_async(),
1056 )
1057 .await
1058 .unwrap();
1059 worktree_a
1060 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1061 .await;
1062 let (worktree_id, worktree_token) = worktree_a
1063 .update(&mut cx_a, |tree, cx| {
1064 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1065 })
1066 .await
1067 .unwrap();
1068
1069 // Join that worktree as client B, and see that a guest has joined as client A.
1070 let worktree_b = Worktree::open_remote(
1071 client_b.clone(),
1072 worktree_id,
1073 worktree_token,
1074 lang_registry.clone(),
1075 &mut cx_b.to_async(),
1076 )
1077 .await
1078 .unwrap();
1079 let replica_id_b = worktree_b.read_with(&cx_b, |tree, _| tree.replica_id());
1080 worktree_a
1081 .condition(&cx_a, |tree, _| {
1082 tree.peers()
1083 .values()
1084 .any(|replica_id| *replica_id == replica_id_b)
1085 })
1086 .await;
1087
1088 // Open the same file as client B and client A.
1089 let buffer_b = worktree_b
1090 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("b.txt", cx))
1091 .await
1092 .unwrap();
1093 buffer_b.read_with(&cx_b, |buf, _| assert_eq!(buf.text(), "b-contents"));
1094 worktree_a.read_with(&cx_a, |tree, cx| assert!(tree.has_open_buffer("b.txt", cx)));
1095 let buffer_a = worktree_a
1096 .update(&mut cx_a, |tree, cx| tree.open_buffer("b.txt", cx))
1097 .await
1098 .unwrap();
1099
1100 // Create a selection set as client B and see that selection set as client A.
1101 let editor_b = cx_b.add_view(window_b, |cx| Editor::for_buffer(buffer_b, settings, cx));
1102 buffer_a
1103 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 1)
1104 .await;
1105
1106 // Edit the buffer as client B and see that edit as client A.
1107 editor_b.update(&mut cx_b, |editor, cx| {
1108 editor.insert(&Insert("ok, ".into()), cx)
1109 });
1110 buffer_a
1111 .condition(&cx_a, |buffer, _| buffer.text() == "ok, b-contents")
1112 .await;
1113
1114 // Remove the selection set as client B, see those selections disappear as client A.
1115 cx_b.update(move |_| drop(editor_b));
1116 buffer_a
1117 .condition(&cx_a, |buffer, _| buffer.selection_sets().count() == 0)
1118 .await;
1119
1120 // Close the buffer as client A, see that the buffer is closed.
1121 drop(buffer_a);
1122 worktree_a
1123 .condition(&cx_a, |tree, cx| !tree.has_open_buffer("b.txt", cx))
1124 .await;
1125
1126 // Dropping the worktree removes client B from client A's peers.
1127 cx_b.update(move |_| drop(worktree_b));
1128 worktree_a
1129 .condition(&cx_a, |tree, _| tree.peers().is_empty())
1130 .await;
1131 }
1132
1133 #[gpui::test]
1134 async fn test_propagate_saves_and_fs_changes_in_shared_worktree(
1135 mut cx_a: TestAppContext,
1136 mut cx_b: TestAppContext,
1137 mut cx_c: TestAppContext,
1138 ) {
1139 cx_a.foreground().forbid_parking();
1140 let lang_registry = Arc::new(LanguageRegistry::new());
1141
1142 // Connect to a server as 3 clients.
1143 let mut server = TestServer::start().await;
1144 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1145 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1146 let (_, client_c) = server.create_client(&mut cx_c, "user_c").await;
1147
1148 let fs = Arc::new(FakeFs::new());
1149
1150 // Share a worktree as client A.
1151 fs.insert_tree(
1152 "/a",
1153 json!({
1154 "file1": "",
1155 "file2": ""
1156 }),
1157 )
1158 .await;
1159
1160 let worktree_a = Worktree::open_local(
1161 "/a".as_ref(),
1162 lang_registry.clone(),
1163 fs.clone(),
1164 &mut cx_a.to_async(),
1165 )
1166 .await
1167 .unwrap();
1168 worktree_a
1169 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1170 .await;
1171 let (worktree_id, worktree_token) = worktree_a
1172 .update(&mut cx_a, |tree, cx| {
1173 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1174 })
1175 .await
1176 .unwrap();
1177
1178 // Join that worktree as clients B and C.
1179 let worktree_b = Worktree::open_remote(
1180 client_b.clone(),
1181 worktree_id,
1182 worktree_token.clone(),
1183 lang_registry.clone(),
1184 &mut cx_b.to_async(),
1185 )
1186 .await
1187 .unwrap();
1188 let worktree_c = Worktree::open_remote(
1189 client_c.clone(),
1190 worktree_id,
1191 worktree_token,
1192 lang_registry.clone(),
1193 &mut cx_c.to_async(),
1194 )
1195 .await
1196 .unwrap();
1197
1198 // Open and edit a buffer as both guests B and C.
1199 let buffer_b = worktree_b
1200 .update(&mut cx_b, |tree, cx| tree.open_buffer("file1", cx))
1201 .await
1202 .unwrap();
1203 let buffer_c = worktree_c
1204 .update(&mut cx_c, |tree, cx| tree.open_buffer("file1", cx))
1205 .await
1206 .unwrap();
1207 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "i-am-b, ", cx));
1208 buffer_c.update(&mut cx_c, |buf, cx| buf.edit([0..0], "i-am-c, ", cx));
1209
1210 // Open and edit that buffer as the host.
1211 let buffer_a = worktree_a
1212 .update(&mut cx_a, |tree, cx| tree.open_buffer("file1", cx))
1213 .await
1214 .unwrap();
1215
1216 buffer_a
1217 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, ")
1218 .await;
1219 buffer_a.update(&mut cx_a, |buf, cx| {
1220 buf.edit([buf.len()..buf.len()], "i-am-a", cx)
1221 });
1222
1223 // Wait for edits to propagate
1224 buffer_a
1225 .condition(&mut cx_a, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1226 .await;
1227 buffer_b
1228 .condition(&mut cx_b, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1229 .await;
1230 buffer_c
1231 .condition(&mut cx_c, |buf, _| buf.text() == "i-am-c, i-am-b, i-am-a")
1232 .await;
1233
1234 // Edit the buffer as the host and concurrently save as guest B.
1235 let save_b = buffer_b.update(&mut cx_b, |buf, cx| buf.save(cx).unwrap());
1236 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "hi-a, ", cx));
1237 save_b.await.unwrap();
1238 assert_eq!(
1239 fs.load("/a/file1".as_ref()).await.unwrap(),
1240 "hi-a, i-am-c, i-am-b, i-am-a"
1241 );
1242 buffer_a.read_with(&cx_a, |buf, _| assert!(!buf.is_dirty()));
1243 buffer_b.read_with(&cx_b, |buf, _| assert!(!buf.is_dirty()));
1244 buffer_c.condition(&cx_c, |buf, _| !buf.is_dirty()).await;
1245
1246 // Make changes on host's file system, see those changes on the guests.
1247 fs.rename("/a/file2".as_ref(), "/a/file3".as_ref())
1248 .await
1249 .unwrap();
1250 fs.insert_file(Path::new("/a/file4"), "4".into())
1251 .await
1252 .unwrap();
1253
1254 worktree_b
1255 .condition(&cx_b, |tree, _| tree.file_count() == 3)
1256 .await;
1257 worktree_c
1258 .condition(&cx_c, |tree, _| tree.file_count() == 3)
1259 .await;
1260 worktree_b.read_with(&cx_b, |tree, _| {
1261 assert_eq!(
1262 tree.paths()
1263 .map(|p| p.to_string_lossy())
1264 .collect::<Vec<_>>(),
1265 &["file1", "file3", "file4"]
1266 )
1267 });
1268 worktree_c.read_with(&cx_c, |tree, _| {
1269 assert_eq!(
1270 tree.paths()
1271 .map(|p| p.to_string_lossy())
1272 .collect::<Vec<_>>(),
1273 &["file1", "file3", "file4"]
1274 )
1275 });
1276 }
1277
1278 #[gpui::test]
1279 async fn test_buffer_conflict_after_save(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1280 cx_a.foreground().forbid_parking();
1281 let lang_registry = Arc::new(LanguageRegistry::new());
1282
1283 // Connect to a server as 2 clients.
1284 let mut server = TestServer::start().await;
1285 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1286 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1287
1288 // Share a local worktree as client A
1289 let fs = Arc::new(FakeFs::new());
1290 fs.save(Path::new("/a.txt"), &"a-contents".into())
1291 .await
1292 .unwrap();
1293 let worktree_a = Worktree::open_local(
1294 "/".as_ref(),
1295 lang_registry.clone(),
1296 fs,
1297 &mut cx_a.to_async(),
1298 )
1299 .await
1300 .unwrap();
1301 worktree_a
1302 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1303 .await;
1304 let (worktree_id, worktree_token) = worktree_a
1305 .update(&mut cx_a, |tree, cx| {
1306 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1307 })
1308 .await
1309 .unwrap();
1310
1311 // Join that worktree as client B, and see that a guest has joined as client A.
1312 let worktree_b = Worktree::open_remote(
1313 client_b.clone(),
1314 worktree_id,
1315 worktree_token,
1316 lang_registry.clone(),
1317 &mut cx_b.to_async(),
1318 )
1319 .await
1320 .unwrap();
1321
1322 let buffer_b = worktree_b
1323 .update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx))
1324 .await
1325 .unwrap();
1326 let mtime = buffer_b.read_with(&cx_b, |buf, _| buf.file().unwrap().mtime);
1327
1328 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "world ", cx));
1329 buffer_b.read_with(&cx_b, |buf, _| {
1330 assert!(buf.is_dirty());
1331 assert!(!buf.has_conflict());
1332 });
1333
1334 buffer_b
1335 .update(&mut cx_b, |buf, cx| buf.save(cx))
1336 .unwrap()
1337 .await
1338 .unwrap();
1339 worktree_b
1340 .condition(&cx_b, |_, cx| {
1341 buffer_b.read(cx).file().unwrap().mtime != mtime
1342 })
1343 .await;
1344 buffer_b.read_with(&cx_b, |buf, _| {
1345 assert!(!buf.is_dirty());
1346 assert!(!buf.has_conflict());
1347 });
1348
1349 buffer_b.update(&mut cx_b, |buf, cx| buf.edit([0..0], "hello ", cx));
1350 buffer_b.read_with(&cx_b, |buf, _| {
1351 assert!(buf.is_dirty());
1352 assert!(!buf.has_conflict());
1353 });
1354 }
1355
1356 #[gpui::test]
1357 async fn test_editing_while_guest_opens_buffer(
1358 mut cx_a: TestAppContext,
1359 mut cx_b: TestAppContext,
1360 ) {
1361 cx_a.foreground().forbid_parking();
1362 let lang_registry = Arc::new(LanguageRegistry::new());
1363
1364 // Connect to a server as 2 clients.
1365 let mut server = TestServer::start().await;
1366 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1367 let (_, client_b) = server.create_client(&mut cx_b, "user_b").await;
1368
1369 // Share a local worktree as client A
1370 let fs = Arc::new(FakeFs::new());
1371 fs.save(Path::new("/a.txt"), &"a-contents".into())
1372 .await
1373 .unwrap();
1374 let worktree_a = Worktree::open_local(
1375 "/".as_ref(),
1376 lang_registry.clone(),
1377 fs,
1378 &mut cx_a.to_async(),
1379 )
1380 .await
1381 .unwrap();
1382 worktree_a
1383 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1384 .await;
1385 let (worktree_id, worktree_token) = worktree_a
1386 .update(&mut cx_a, |tree, cx| {
1387 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1388 })
1389 .await
1390 .unwrap();
1391
1392 // Join that worktree as client B, and see that a guest has joined as client A.
1393 let worktree_b = Worktree::open_remote(
1394 client_b.clone(),
1395 worktree_id,
1396 worktree_token,
1397 lang_registry.clone(),
1398 &mut cx_b.to_async(),
1399 )
1400 .await
1401 .unwrap();
1402
1403 let buffer_a = worktree_a
1404 .update(&mut cx_a, |tree, cx| tree.open_buffer("a.txt", cx))
1405 .await
1406 .unwrap();
1407 let buffer_b = cx_b
1408 .background()
1409 .spawn(worktree_b.update(&mut cx_b, |worktree, cx| worktree.open_buffer("a.txt", cx)));
1410
1411 task::yield_now().await;
1412 buffer_a.update(&mut cx_a, |buf, cx| buf.edit([0..0], "z", cx));
1413
1414 let text = buffer_a.read_with(&cx_a, |buf, _| buf.text());
1415 let buffer_b = buffer_b.await.unwrap();
1416 buffer_b.condition(&cx_b, |buf, _| buf.text() == text).await;
1417 }
1418
1419 #[gpui::test]
1420 async fn test_peer_disconnection(mut cx_a: TestAppContext, cx_b: TestAppContext) {
1421 cx_a.foreground().forbid_parking();
1422 let lang_registry = Arc::new(LanguageRegistry::new());
1423
1424 // Connect to a server as 2 clients.
1425 let mut server = TestServer::start().await;
1426 let (_, client_a) = server.create_client(&mut cx_a, "user_a").await;
1427 let (_, client_b) = server.create_client(&mut cx_a, "user_b").await;
1428
1429 // Share a local worktree as client A
1430 let fs = Arc::new(FakeFs::new());
1431 fs.insert_tree(
1432 "/a",
1433 json!({
1434 "a.txt": "a-contents",
1435 "b.txt": "b-contents",
1436 }),
1437 )
1438 .await;
1439 let worktree_a = Worktree::open_local(
1440 "/a".as_ref(),
1441 lang_registry.clone(),
1442 fs,
1443 &mut cx_a.to_async(),
1444 )
1445 .await
1446 .unwrap();
1447 worktree_a
1448 .read_with(&cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1449 .await;
1450 let (worktree_id, worktree_token) = worktree_a
1451 .update(&mut cx_a, |tree, cx| {
1452 tree.as_local_mut().unwrap().share(client_a.clone(), cx)
1453 })
1454 .await
1455 .unwrap();
1456
1457 // Join that worktree as client B, and see that a guest has joined as client A.
1458 let _worktree_b = Worktree::open_remote(
1459 client_b.clone(),
1460 worktree_id,
1461 worktree_token,
1462 lang_registry.clone(),
1463 &mut cx_b.to_async(),
1464 )
1465 .await
1466 .unwrap();
1467 worktree_a
1468 .condition(&cx_a, |tree, _| tree.peers().len() == 1)
1469 .await;
1470
1471 // Drop client B's connection and ensure client A observes client B leaving the worktree.
1472 client_b.disconnect().await.unwrap();
1473 worktree_a
1474 .condition(&cx_a, |tree, _| tree.peers().len() == 0)
1475 .await;
1476 }
1477
1478 #[gpui::test]
1479 async fn test_basic_chat(mut cx_a: TestAppContext, mut cx_b: TestAppContext) {
1480 cx_a.foreground().forbid_parking();
1481
1482 // Connect to a server as 2 clients.
1483 let mut server = TestServer::start().await;
1484 let (user_id_a, client_a) = server.create_client(&mut cx_a, "user_a").await;
1485 let (user_id_b, client_b) = server.create_client(&mut cx_b, "user_b").await;
1486
1487 // Create an org that includes these 2 users.
1488 let db = &server.app_state.db;
1489 let org_id = db.create_org("Test Org", "test-org").await.unwrap();
1490 db.add_org_member(org_id, user_id_a, false).await.unwrap();
1491 db.add_org_member(org_id, user_id_b, false).await.unwrap();
1492
1493 // Create a channel that includes all the users.
1494 let channel_id = db.create_org_channel(org_id, "test-channel").await.unwrap();
1495 db.add_channel_member(channel_id, user_id_a, false)
1496 .await
1497 .unwrap();
1498 db.add_channel_member(channel_id, user_id_b, false)
1499 .await
1500 .unwrap();
1501 db.create_channel_message(
1502 channel_id,
1503 user_id_b,
1504 "hello A, it's B.",
1505 OffsetDateTime::now_utc(),
1506 )
1507 .await
1508 .unwrap();
1509
1510 let user_store_a = Arc::new(UserStore::new(client_a.clone()));
1511 let channels_a = cx_a.add_model(|cx| ChannelList::new(user_store_a, client_a, cx));
1512 channels_a
1513 .condition(&mut cx_a, |list, _| list.available_channels().is_some())
1514 .await;
1515 channels_a.read_with(&cx_a, |list, _| {
1516 assert_eq!(
1517 list.available_channels().unwrap(),
1518 &[ChannelDetails {
1519 id: channel_id.to_proto(),
1520 name: "test-channel".to_string()
1521 }]
1522 )
1523 });
1524 let channel_a = channels_a.update(&mut cx_a, |this, cx| {
1525 this.get_channel(channel_id.to_proto(), cx).unwrap()
1526 });
1527 channel_a.read_with(&cx_a, |channel, _| assert!(channel.messages().is_empty()));
1528 channel_a
1529 .condition(&cx_a, |channel, _| {
1530 channel_messages(channel)
1531 == [("user_b".to_string(), "hello A, it's B.".to_string())]
1532 })
1533 .await;
1534
1535 let user_store_b = Arc::new(UserStore::new(client_b.clone()));
1536 let channels_b = cx_b.add_model(|cx| ChannelList::new(user_store_b, client_b, cx));
1537 channels_b
1538 .condition(&mut cx_b, |list, _| list.available_channels().is_some())
1539 .await;
1540 channels_b.read_with(&cx_b, |list, _| {
1541 assert_eq!(
1542 list.available_channels().unwrap(),
1543 &[ChannelDetails {
1544 id: channel_id.to_proto(),
1545 name: "test-channel".to_string()
1546 }]
1547 )
1548 });
1549
1550 let channel_b = channels_b.update(&mut cx_b, |this, cx| {
1551 this.get_channel(channel_id.to_proto(), cx).unwrap()
1552 });
1553 channel_b.read_with(&cx_b, |channel, _| assert!(channel.messages().is_empty()));
1554 channel_b
1555 .condition(&cx_b, |channel, _| {
1556 channel_messages(channel)
1557 == [("user_b".to_string(), "hello A, it's B.".to_string())]
1558 })
1559 .await;
1560
1561 channel_a
1562 .update(&mut cx_a, |channel, cx| {
1563 channel
1564 .send_message("oh, hi B.".to_string(), cx)
1565 .unwrap()
1566 .detach();
1567 let task = channel.send_message("sup".to_string(), cx).unwrap();
1568 assert_eq!(
1569 channel
1570 .pending_messages()
1571 .iter()
1572 .map(|m| &m.body)
1573 .collect::<Vec<_>>(),
1574 &["oh, hi B.", "sup"]
1575 );
1576 task
1577 })
1578 .await
1579 .unwrap();
1580
1581 channel_a
1582 .condition(&cx_a, |channel, _| channel.pending_messages().is_empty())
1583 .await;
1584 channel_b
1585 .condition(&cx_b, |channel, _| {
1586 channel_messages(channel)
1587 == [
1588 ("user_b".to_string(), "hello A, it's B.".to_string()),
1589 ("user_a".to_string(), "oh, hi B.".to_string()),
1590 ("user_a".to_string(), "sup".to_string()),
1591 ]
1592 })
1593 .await;
1594
1595 assert_eq!(
1596 server.state().await.channels[&channel_id]
1597 .connection_ids
1598 .len(),
1599 2
1600 );
1601 cx_b.update(|_| drop(channel_b));
1602 server
1603 .condition(|state| state.channels[&channel_id].connection_ids.len() == 1)
1604 .await;
1605
1606 cx_a.update(|_| drop(channel_a));
1607 server
1608 .condition(|state| !state.channels.contains_key(&channel_id))
1609 .await;
1610
1611 fn channel_messages(channel: &Channel) -> Vec<(String, String)> {
1612 channel
1613 .messages()
1614 .cursor::<(), ()>()
1615 .map(|m| (m.sender.github_login.clone(), m.body.clone()))
1616 .collect()
1617 }
1618 }
1619
1620 #[gpui::test]
1621 async fn test_chat_message_validation(mut cx_a: TestAppContext) {
1622 cx_a.foreground().forbid_parking();
1623
1624 let mut server = TestServer::start().await;
1625 let (user_id_a, client_a) = server.create_client(&mut cx_a, "user_a").await;
1626
1627 let db = &server.app_state.db;
1628 let org_id = db.create_org("Test Org", "test-org").await.unwrap();
1629 let channel_id = db.create_org_channel(org_id, "test-channel").await.unwrap();
1630 db.add_org_member(org_id, user_id_a, false).await.unwrap();
1631 db.add_channel_member(channel_id, user_id_a, false)
1632 .await
1633 .unwrap();
1634
1635 let user_store_a = Arc::new(UserStore::new(client_a.clone()));
1636 let channels_a = cx_a.add_model(|cx| ChannelList::new(user_store_a, client_a, cx));
1637 channels_a
1638 .condition(&mut cx_a, |list, _| list.available_channels().is_some())
1639 .await;
1640 let channel_a = channels_a.update(&mut cx_a, |this, cx| {
1641 this.get_channel(channel_id.to_proto(), cx).unwrap()
1642 });
1643
1644 // Messages aren't allowed to be too long.
1645 channel_a
1646 .update(&mut cx_a, |channel, cx| {
1647 let long_body = "this is long.\n".repeat(1024);
1648 channel.send_message(long_body, cx).unwrap()
1649 })
1650 .await
1651 .unwrap_err();
1652
1653 // Messages aren't allowed to be blank.
1654 channel_a.update(&mut cx_a, |channel, cx| {
1655 channel.send_message(String::new(), cx).unwrap_err()
1656 });
1657
1658 // Leading and trailing whitespace are trimmed.
1659 channel_a
1660 .update(&mut cx_a, |channel, cx| {
1661 channel
1662 .send_message("\n surrounded by whitespace \n".to_string(), cx)
1663 .unwrap()
1664 })
1665 .await
1666 .unwrap();
1667 assert_eq!(
1668 db.get_channel_messages(channel_id, 10, None)
1669 .await
1670 .unwrap()
1671 .iter()
1672 .map(|m| &m.body)
1673 .collect::<Vec<_>>(),
1674 &["surrounded by whitespace"]
1675 );
1676 }
1677
1678 struct TestServer {
1679 peer: Arc<Peer>,
1680 app_state: Arc<AppState>,
1681 server: Arc<Server>,
1682 notifications: mpsc::Receiver<()>,
1683 _test_db: TestDb,
1684 }
1685
1686 impl TestServer {
1687 async fn start() -> Self {
1688 let test_db = TestDb::new();
1689 let app_state = Self::build_app_state(&test_db).await;
1690 let peer = Peer::new();
1691 let notifications = mpsc::channel(128);
1692 let server = Server::new(app_state.clone(), peer.clone(), Some(notifications.0));
1693 Self {
1694 peer,
1695 app_state,
1696 server,
1697 notifications: notifications.1,
1698 _test_db: test_db,
1699 }
1700 }
1701
1702 async fn create_client(
1703 &mut self,
1704 cx: &mut TestAppContext,
1705 name: &str,
1706 ) -> (UserId, Arc<Client>) {
1707 let user_id = self.app_state.db.create_user(name, false).await.unwrap();
1708 let client = Client::new();
1709 let (client_conn, server_conn) = test::Channel::bidirectional();
1710 cx.background()
1711 .spawn(
1712 self.server
1713 .handle_connection(server_conn, name.to_string(), user_id),
1714 )
1715 .detach();
1716 client
1717 .set_connection(user_id.to_proto(), client_conn, &cx.to_async())
1718 .await
1719 .unwrap();
1720 (user_id, client)
1721 }
1722
1723 async fn build_app_state(test_db: &TestDb) -> Arc<AppState> {
1724 let mut config = Config::default();
1725 config.session_secret = "a".repeat(32);
1726 config.database_url = test_db.url.clone();
1727 let github_client = github::AppClient::test();
1728 Arc::new(AppState {
1729 db: test_db.db().clone(),
1730 handlebars: Default::default(),
1731 auth_client: auth::build_client("", ""),
1732 repo_client: github::RepoClient::test(&github_client),
1733 github_client,
1734 config,
1735 })
1736 }
1737
1738 async fn state<'a>(&'a self) -> RwLockReadGuard<'a, ServerState> {
1739 self.server.state.read().await
1740 }
1741
1742 async fn condition<F>(&mut self, mut predicate: F)
1743 where
1744 F: FnMut(&ServerState) -> bool,
1745 {
1746 async_std::future::timeout(Duration::from_millis(500), async {
1747 while !(predicate)(&*self.server.state.read().await) {
1748 self.notifications.recv().await;
1749 }
1750 })
1751 .await
1752 .expect("condition timed out");
1753 }
1754 }
1755
1756 impl Drop for TestServer {
1757 fn drop(&mut self) {
1758 task::block_on(self.peer.reset());
1759 }
1760 }
1761
1762 struct EmptyView;
1763
1764 impl gpui::Entity for EmptyView {
1765 type Event = ();
1766 }
1767
1768 impl gpui::View for EmptyView {
1769 fn ui_name() -> &'static str {
1770 "empty view"
1771 }
1772
1773 fn render(&mut self, _: &mut gpui::RenderContext<Self>) -> gpui::ElementBox {
1774 gpui::Element::boxed(gpui::elements::Empty)
1775 }
1776 }
1777}