1mod connection_pool;
   2
   3use crate::{
   4    auth,
   5    db::{self, ChannelId, ChannelsForUser, Database, ProjectId, RoomId, ServerId, User, UserId},
   6    executor::Executor,
   7    AppState, Result,
   8};
   9use anyhow::anyhow;
  10use async_tungstenite::tungstenite::{
  11    protocol::CloseFrame as TungsteniteCloseFrame, Message as TungsteniteMessage,
  12};
  13use axum::{
  14    body::Body,
  15    extract::{
  16        ws::{CloseFrame as AxumCloseFrame, Message as AxumMessage},
  17        ConnectInfo, WebSocketUpgrade,
  18    },
  19    headers::{Header, HeaderName},
  20    http::StatusCode,
  21    middleware,
  22    response::IntoResponse,
  23    routing::get,
  24    Extension, Router, TypedHeader,
  25};
  26use collections::{HashMap, HashSet};
  27pub use connection_pool::ConnectionPool;
  28use futures::{
  29    channel::oneshot,
  30    future::{self, BoxFuture},
  31    stream::FuturesUnordered,
  32    FutureExt, SinkExt, StreamExt, TryStreamExt,
  33};
  34use lazy_static::lazy_static;
  35use prometheus::{register_int_gauge, IntGauge};
  36use rpc::{
  37    proto::{
  38        self, AnyTypedEnvelope, EntityMessage, EnvelopedMessage, LiveKitConnectionInfo,
  39        RequestMessage,
  40    },
  41    Connection, ConnectionId, Peer, Receipt, TypedEnvelope,
  42};
  43use serde::{Serialize, Serializer};
  44use std::{
  45    any::TypeId,
  46    fmt,
  47    future::Future,
  48    marker::PhantomData,
  49    mem,
  50    net::SocketAddr,
  51    ops::{Deref, DerefMut},
  52    rc::Rc,
  53    sync::{
  54        atomic::{AtomicBool, Ordering::SeqCst},
  55        Arc,
  56    },
  57    time::{Duration, Instant},
  58};
  59use tokio::sync::{watch, Semaphore};
  60use tower::ServiceBuilder;
  61use tracing::{info_span, instrument, Instrument};
  62
  63pub const RECONNECT_TIMEOUT: Duration = Duration::from_secs(30);
  64pub const CLEANUP_TIMEOUT: Duration = Duration::from_secs(10);
  65
  66lazy_static! {
  67    static ref METRIC_CONNECTIONS: IntGauge =
  68        register_int_gauge!("connections", "number of connections").unwrap();
  69    static ref METRIC_SHARED_PROJECTS: IntGauge = register_int_gauge!(
  70        "shared_projects",
  71        "number of open projects with one or more guests"
  72    )
  73    .unwrap();
  74}
  75
  76type MessageHandler =
  77    Box<dyn Send + Sync + Fn(Box<dyn AnyTypedEnvelope>, Session) -> BoxFuture<'static, ()>>;
  78
  79struct Response<R> {
  80    peer: Arc<Peer>,
  81    receipt: Receipt<R>,
  82    responded: Arc<AtomicBool>,
  83}
  84
  85impl<R: RequestMessage> Response<R> {
  86    fn send(self, payload: R::Response) -> Result<()> {
  87        self.responded.store(true, SeqCst);
  88        self.peer.respond(self.receipt, payload)?;
  89        Ok(())
  90    }
  91}
  92
  93#[derive(Clone)]
  94struct Session {
  95    user_id: UserId,
  96    connection_id: ConnectionId,
  97    db: Arc<tokio::sync::Mutex<DbHandle>>,
  98    peer: Arc<Peer>,
  99    connection_pool: Arc<parking_lot::Mutex<ConnectionPool>>,
 100    live_kit_client: Option<Arc<dyn live_kit_server::api::Client>>,
 101    executor: Executor,
 102}
 103
 104impl Session {
 105    async fn db(&self) -> tokio::sync::MutexGuard<DbHandle> {
 106        #[cfg(test)]
 107        tokio::task::yield_now().await;
 108        let guard = self.db.lock().await;
 109        #[cfg(test)]
 110        tokio::task::yield_now().await;
 111        guard
 112    }
 113
 114    async fn connection_pool(&self) -> ConnectionPoolGuard<'_> {
 115        #[cfg(test)]
 116        tokio::task::yield_now().await;
 117        let guard = self.connection_pool.lock();
 118        ConnectionPoolGuard {
 119            guard,
 120            _not_send: PhantomData,
 121        }
 122    }
 123}
 124
 125impl fmt::Debug for Session {
 126    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
 127        f.debug_struct("Session")
 128            .field("user_id", &self.user_id)
 129            .field("connection_id", &self.connection_id)
 130            .finish()
 131    }
 132}
 133
 134struct DbHandle(Arc<Database>);
 135
 136impl Deref for DbHandle {
 137    type Target = Database;
 138
 139    fn deref(&self) -> &Self::Target {
 140        self.0.as_ref()
 141    }
 142}
 143
 144pub struct Server {
 145    id: parking_lot::Mutex<ServerId>,
 146    peer: Arc<Peer>,
 147    pub(crate) connection_pool: Arc<parking_lot::Mutex<ConnectionPool>>,
 148    app_state: Arc<AppState>,
 149    executor: Executor,
 150    handlers: HashMap<TypeId, MessageHandler>,
 151    teardown: watch::Sender<()>,
 152}
 153
 154pub(crate) struct ConnectionPoolGuard<'a> {
 155    guard: parking_lot::MutexGuard<'a, ConnectionPool>,
 156    _not_send: PhantomData<Rc<()>>,
 157}
 158
 159#[derive(Serialize)]
 160pub struct ServerSnapshot<'a> {
 161    peer: &'a Peer,
 162    #[serde(serialize_with = "serialize_deref")]
 163    connection_pool: ConnectionPoolGuard<'a>,
 164}
 165
 166pub fn serialize_deref<S, T, U>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
 167where
 168    S: Serializer,
 169    T: Deref<Target = U>,
 170    U: Serialize,
 171{
 172    Serialize::serialize(value.deref(), serializer)
 173}
 174
 175impl Server {
 176    pub fn new(id: ServerId, app_state: Arc<AppState>, executor: Executor) -> Arc<Self> {
 177        let mut server = Self {
 178            id: parking_lot::Mutex::new(id),
 179            peer: Peer::new(id.0 as u32),
 180            app_state,
 181            executor,
 182            connection_pool: Default::default(),
 183            handlers: Default::default(),
 184            teardown: watch::channel(()).0,
 185        };
 186
 187        server
 188            .add_request_handler(ping)
 189            .add_request_handler(create_room)
 190            .add_request_handler(join_room)
 191            .add_request_handler(rejoin_room)
 192            .add_request_handler(leave_room)
 193            .add_request_handler(call)
 194            .add_request_handler(cancel_call)
 195            .add_message_handler(decline_call)
 196            .add_request_handler(update_participant_location)
 197            .add_request_handler(share_project)
 198            .add_message_handler(unshare_project)
 199            .add_request_handler(join_project)
 200            .add_message_handler(leave_project)
 201            .add_request_handler(update_project)
 202            .add_request_handler(update_worktree)
 203            .add_message_handler(start_language_server)
 204            .add_message_handler(update_language_server)
 205            .add_message_handler(update_diagnostic_summary)
 206            .add_message_handler(update_worktree_settings)
 207            .add_message_handler(refresh_inlay_hints)
 208            .add_request_handler(forward_project_request::<proto::GetHover>)
 209            .add_request_handler(forward_project_request::<proto::GetDefinition>)
 210            .add_request_handler(forward_project_request::<proto::GetTypeDefinition>)
 211            .add_request_handler(forward_project_request::<proto::GetReferences>)
 212            .add_request_handler(forward_project_request::<proto::SearchProject>)
 213            .add_request_handler(forward_project_request::<proto::GetDocumentHighlights>)
 214            .add_request_handler(forward_project_request::<proto::GetProjectSymbols>)
 215            .add_request_handler(forward_project_request::<proto::OpenBufferForSymbol>)
 216            .add_request_handler(forward_project_request::<proto::OpenBufferById>)
 217            .add_request_handler(forward_project_request::<proto::OpenBufferByPath>)
 218            .add_request_handler(forward_project_request::<proto::GetCompletions>)
 219            .add_request_handler(forward_project_request::<proto::ApplyCompletionAdditionalEdits>)
 220            .add_request_handler(forward_project_request::<proto::GetCodeActions>)
 221            .add_request_handler(forward_project_request::<proto::ApplyCodeAction>)
 222            .add_request_handler(forward_project_request::<proto::PrepareRename>)
 223            .add_request_handler(forward_project_request::<proto::PerformRename>)
 224            .add_request_handler(forward_project_request::<proto::ReloadBuffers>)
 225            .add_request_handler(forward_project_request::<proto::SynchronizeBuffers>)
 226            .add_request_handler(forward_project_request::<proto::FormatBuffers>)
 227            .add_request_handler(forward_project_request::<proto::CreateProjectEntry>)
 228            .add_request_handler(forward_project_request::<proto::RenameProjectEntry>)
 229            .add_request_handler(forward_project_request::<proto::CopyProjectEntry>)
 230            .add_request_handler(forward_project_request::<proto::DeleteProjectEntry>)
 231            .add_request_handler(forward_project_request::<proto::ExpandProjectEntry>)
 232            .add_request_handler(forward_project_request::<proto::OnTypeFormatting>)
 233            .add_request_handler(forward_project_request::<proto::InlayHints>)
 234            .add_message_handler(create_buffer_for_peer)
 235            .add_request_handler(update_buffer)
 236            .add_message_handler(update_buffer_file)
 237            .add_message_handler(buffer_reloaded)
 238            .add_message_handler(buffer_saved)
 239            .add_request_handler(forward_project_request::<proto::SaveBuffer>)
 240            .add_request_handler(get_users)
 241            .add_request_handler(fuzzy_search_users)
 242            .add_request_handler(request_contact)
 243            .add_request_handler(remove_contact)
 244            .add_request_handler(respond_to_contact_request)
 245            .add_request_handler(create_channel)
 246            .add_request_handler(remove_channel)
 247            .add_request_handler(invite_channel_member)
 248            .add_request_handler(remove_channel_member)
 249            .add_request_handler(set_channel_member_admin)
 250            .add_request_handler(rename_channel)
 251            .add_request_handler(get_channel_members)
 252            .add_request_handler(respond_to_channel_invite)
 253            .add_request_handler(join_channel)
 254            .add_request_handler(follow)
 255            .add_message_handler(unfollow)
 256            .add_message_handler(update_followers)
 257            .add_message_handler(update_diff_base)
 258            .add_request_handler(get_private_user_info);
 259
 260        Arc::new(server)
 261    }
 262
 263    pub async fn start(&self) -> Result<()> {
 264        let server_id = *self.id.lock();
 265        let app_state = self.app_state.clone();
 266        let peer = self.peer.clone();
 267        let timeout = self.executor.sleep(CLEANUP_TIMEOUT);
 268        let pool = self.connection_pool.clone();
 269        let live_kit_client = self.app_state.live_kit_client.clone();
 270
 271        let span = info_span!("start server");
 272        self.executor.spawn_detached(
 273            async move {
 274                tracing::info!("waiting for cleanup timeout");
 275                timeout.await;
 276                tracing::info!("cleanup timeout expired, retrieving stale rooms");
 277                if let Some(room_ids) = app_state
 278                    .db
 279                    .stale_room_ids(&app_state.config.zed_environment, server_id)
 280                    .await
 281                    .trace_err()
 282                {
 283                    tracing::info!(stale_room_count = room_ids.len(), "retrieved stale rooms");
 284                    for room_id in room_ids {
 285                        let mut contacts_to_update = HashSet::default();
 286                        let mut canceled_calls_to_user_ids = Vec::new();
 287                        let mut live_kit_room = String::new();
 288                        let mut delete_live_kit_room = false;
 289
 290                        if let Some(mut refreshed_room) = app_state
 291                            .db
 292                            .refresh_room(room_id, server_id)
 293                            .await
 294                            .trace_err()
 295                        {
 296                            tracing::info!(
 297                                room_id = room_id.0,
 298                                new_participant_count = refreshed_room.room.participants.len(),
 299                                "refreshed room"
 300                            );
 301                            room_updated(&refreshed_room.room, &peer);
 302                            if let Some(channel_id) = refreshed_room.channel_id {
 303                                channel_updated(
 304                                    channel_id,
 305                                    &refreshed_room.room,
 306                                    &refreshed_room.channel_members,
 307                                    &peer,
 308                                    &*pool.lock(),
 309                                );
 310                            }
 311                            contacts_to_update
 312                                .extend(refreshed_room.stale_participant_user_ids.iter().copied());
 313                            contacts_to_update
 314                                .extend(refreshed_room.canceled_calls_to_user_ids.iter().copied());
 315                            canceled_calls_to_user_ids =
 316                                mem::take(&mut refreshed_room.canceled_calls_to_user_ids);
 317                            live_kit_room = mem::take(&mut refreshed_room.room.live_kit_room);
 318                            delete_live_kit_room = refreshed_room.room.participants.is_empty();
 319                        }
 320
 321                        {
 322                            let pool = pool.lock();
 323                            for canceled_user_id in canceled_calls_to_user_ids {
 324                                for connection_id in pool.user_connection_ids(canceled_user_id) {
 325                                    peer.send(
 326                                        connection_id,
 327                                        proto::CallCanceled {
 328                                            room_id: room_id.to_proto(),
 329                                        },
 330                                    )
 331                                    .trace_err();
 332                                }
 333                            }
 334                        }
 335
 336                        for user_id in contacts_to_update {
 337                            let busy = app_state.db.is_user_busy(user_id).await.trace_err();
 338                            let contacts = app_state.db.get_contacts(user_id).await.trace_err();
 339                            if let Some((busy, contacts)) = busy.zip(contacts) {
 340                                let pool = pool.lock();
 341                                let updated_contact = contact_for_user(user_id, false, busy, &pool);
 342                                for contact in contacts {
 343                                    if let db::Contact::Accepted {
 344                                        user_id: contact_user_id,
 345                                        ..
 346                                    } = contact
 347                                    {
 348                                        for contact_conn_id in
 349                                            pool.user_connection_ids(contact_user_id)
 350                                        {
 351                                            peer.send(
 352                                                contact_conn_id,
 353                                                proto::UpdateContacts {
 354                                                    contacts: vec![updated_contact.clone()],
 355                                                    remove_contacts: Default::default(),
 356                                                    incoming_requests: Default::default(),
 357                                                    remove_incoming_requests: Default::default(),
 358                                                    outgoing_requests: Default::default(),
 359                                                    remove_outgoing_requests: Default::default(),
 360                                                },
 361                                            )
 362                                            .trace_err();
 363                                        }
 364                                    }
 365                                }
 366                            }
 367                        }
 368
 369                        if let Some(live_kit) = live_kit_client.as_ref() {
 370                            if delete_live_kit_room {
 371                                live_kit.delete_room(live_kit_room).await.trace_err();
 372                            }
 373                        }
 374                    }
 375                }
 376
 377                app_state
 378                    .db
 379                    .delete_stale_servers(&app_state.config.zed_environment, server_id)
 380                    .await
 381                    .trace_err();
 382            }
 383            .instrument(span),
 384        );
 385        Ok(())
 386    }
 387
 388    pub fn teardown(&self) {
 389        self.peer.teardown();
 390        self.connection_pool.lock().reset();
 391        let _ = self.teardown.send(());
 392    }
 393
 394    #[cfg(test)]
 395    pub fn reset(&self, id: ServerId) {
 396        self.teardown();
 397        *self.id.lock() = id;
 398        self.peer.reset(id.0 as u32);
 399    }
 400
 401    #[cfg(test)]
 402    pub fn id(&self) -> ServerId {
 403        *self.id.lock()
 404    }
 405
 406    fn add_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
 407    where
 408        F: 'static + Send + Sync + Fn(TypedEnvelope<M>, Session) -> Fut,
 409        Fut: 'static + Send + Future<Output = Result<()>>,
 410        M: EnvelopedMessage,
 411    {
 412        let prev_handler = self.handlers.insert(
 413            TypeId::of::<M>(),
 414            Box::new(move |envelope, session| {
 415                let envelope = envelope.into_any().downcast::<TypedEnvelope<M>>().unwrap();
 416                let span = info_span!(
 417                    "handle message",
 418                    payload_type = envelope.payload_type_name()
 419                );
 420                span.in_scope(|| {
 421                    tracing::info!(
 422                        payload_type = envelope.payload_type_name(),
 423                        "message received"
 424                    );
 425                });
 426                let start_time = Instant::now();
 427                let future = (handler)(*envelope, session);
 428                async move {
 429                    let result = future.await;
 430                    let duration_ms = start_time.elapsed().as_micros() as f64 / 1000.0;
 431                    match result {
 432                        Err(error) => {
 433                            tracing::error!(%error, ?duration_ms, "error handling message")
 434                        }
 435                        Ok(()) => tracing::info!(?duration_ms, "finished handling message"),
 436                    }
 437                }
 438                .instrument(span)
 439                .boxed()
 440            }),
 441        );
 442        if prev_handler.is_some() {
 443            panic!("registered a handler for the same message twice");
 444        }
 445        self
 446    }
 447
 448    fn add_message_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
 449    where
 450        F: 'static + Send + Sync + Fn(M, Session) -> Fut,
 451        Fut: 'static + Send + Future<Output = Result<()>>,
 452        M: EnvelopedMessage,
 453    {
 454        self.add_handler(move |envelope, session| handler(envelope.payload, session));
 455        self
 456    }
 457
 458    fn add_request_handler<F, Fut, M>(&mut self, handler: F) -> &mut Self
 459    where
 460        F: 'static + Send + Sync + Fn(M, Response<M>, Session) -> Fut,
 461        Fut: Send + Future<Output = Result<()>>,
 462        M: RequestMessage,
 463    {
 464        let handler = Arc::new(handler);
 465        self.add_handler(move |envelope, session| {
 466            let receipt = envelope.receipt();
 467            let handler = handler.clone();
 468            async move {
 469                let peer = session.peer.clone();
 470                let responded = Arc::new(AtomicBool::default());
 471                let response = Response {
 472                    peer: peer.clone(),
 473                    responded: responded.clone(),
 474                    receipt,
 475                };
 476                match (handler)(envelope.payload, response, session).await {
 477                    Ok(()) => {
 478                        if responded.load(std::sync::atomic::Ordering::SeqCst) {
 479                            Ok(())
 480                        } else {
 481                            Err(anyhow!("handler did not send a response"))?
 482                        }
 483                    }
 484                    Err(error) => {
 485                        peer.respond_with_error(
 486                            receipt,
 487                            proto::Error {
 488                                message: error.to_string(),
 489                            },
 490                        )?;
 491                        Err(error)
 492                    }
 493                }
 494            }
 495        })
 496    }
 497
 498    pub fn handle_connection(
 499        self: &Arc<Self>,
 500        connection: Connection,
 501        address: String,
 502        user: User,
 503        mut send_connection_id: Option<oneshot::Sender<ConnectionId>>,
 504        executor: Executor,
 505    ) -> impl Future<Output = Result<()>> {
 506        let this = self.clone();
 507        let user_id = user.id;
 508        let login = user.github_login;
 509        let span = info_span!("handle connection", %user_id, %login, %address);
 510        let mut teardown = self.teardown.subscribe();
 511        async move {
 512            let (connection_id, handle_io, mut incoming_rx) = this
 513                .peer
 514                .add_connection(connection, {
 515                    let executor = executor.clone();
 516                    move |duration| executor.sleep(duration)
 517                });
 518
 519            tracing::info!(%user_id, %login, %connection_id, %address, "connection opened");
 520            this.peer.send(connection_id, proto::Hello { peer_id: Some(connection_id.into()) })?;
 521            tracing::info!(%user_id, %login, %connection_id, %address, "sent hello message");
 522
 523            if let Some(send_connection_id) = send_connection_id.take() {
 524                let _ = send_connection_id.send(connection_id);
 525            }
 526
 527            if !user.connected_once {
 528                this.peer.send(connection_id, proto::ShowContacts {})?;
 529                this.app_state.db.set_user_connected_once(user_id, true).await?;
 530            }
 531
 532            let (contacts, invite_code, channels_for_user, channel_invites) = future::try_join4(
 533                this.app_state.db.get_contacts(user_id),
 534                this.app_state.db.get_invite_code_for_user(user_id),
 535                this.app_state.db.get_channels_for_user(user_id),
 536                this.app_state.db.get_channel_invites_for_user(user_id)
 537            ).await?;
 538
 539            {
 540                let mut pool = this.connection_pool.lock();
 541                pool.add_connection(connection_id, user_id, user.admin);
 542                this.peer.send(connection_id, build_initial_contacts_update(contacts, &pool))?;
 543                this.peer.send(connection_id, build_initial_channels_update(
 544                    channels_for_user,
 545                    channel_invites
 546                ))?;
 547
 548                if let Some((code, count)) = invite_code {
 549                    this.peer.send(connection_id, proto::UpdateInviteInfo {
 550                        url: format!("{}{}", this.app_state.config.invite_link_prefix, code),
 551                        count: count as u32,
 552                    })?;
 553                }
 554            }
 555
 556            if let Some(incoming_call) = this.app_state.db.incoming_call_for_user(user_id).await? {
 557                this.peer.send(connection_id, incoming_call)?;
 558            }
 559
 560            let session = Session {
 561                user_id,
 562                connection_id,
 563                db: Arc::new(tokio::sync::Mutex::new(DbHandle(this.app_state.db.clone()))),
 564                peer: this.peer.clone(),
 565                connection_pool: this.connection_pool.clone(),
 566                live_kit_client: this.app_state.live_kit_client.clone(),
 567                executor: executor.clone(),
 568            };
 569            update_user_contacts(user_id, &session).await?;
 570
 571            let handle_io = handle_io.fuse();
 572            futures::pin_mut!(handle_io);
 573
 574            // Handlers for foreground messages are pushed into the following `FuturesUnordered`.
 575            // This prevents deadlocks when e.g., client A performs a request to client B and
 576            // client B performs a request to client A. If both clients stop processing further
 577            // messages until their respective request completes, they won't have a chance to
 578            // respond to the other client's request and cause a deadlock.
 579            //
 580            // This arrangement ensures we will attempt to process earlier messages first, but fall
 581            // back to processing messages arrived later in the spirit of making progress.
 582            let mut foreground_message_handlers = FuturesUnordered::new();
 583            let concurrent_handlers = Arc::new(Semaphore::new(256));
 584            loop {
 585                let next_message = async {
 586                    let permit = concurrent_handlers.clone().acquire_owned().await.unwrap();
 587                    let message = incoming_rx.next().await;
 588                    (permit, message)
 589                }.fuse();
 590                futures::pin_mut!(next_message);
 591                futures::select_biased! {
 592                    _ = teardown.changed().fuse() => return Ok(()),
 593                    result = handle_io => {
 594                        if let Err(error) = result {
 595                            tracing::error!(?error, %user_id, %login, %connection_id, %address, "error handling I/O");
 596                        }
 597                        break;
 598                    }
 599                    _ = foreground_message_handlers.next() => {}
 600                    next_message = next_message => {
 601                        let (permit, message) = next_message;
 602                        if let Some(message) = message {
 603                            let type_name = message.payload_type_name();
 604                            let span = tracing::info_span!("receive message", %user_id, %login, %connection_id, %address, type_name);
 605                            let span_enter = span.enter();
 606                            if let Some(handler) = this.handlers.get(&message.payload_type_id()) {
 607                                let is_background = message.is_background();
 608                                let handle_message = (handler)(message, session.clone());
 609                                drop(span_enter);
 610
 611                                let handle_message = async move {
 612                                    handle_message.await;
 613                                    drop(permit);
 614                                }.instrument(span);
 615                                if is_background {
 616                                    executor.spawn_detached(handle_message);
 617                                } else {
 618                                    foreground_message_handlers.push(handle_message);
 619                                }
 620                            } else {
 621                                tracing::error!(%user_id, %login, %connection_id, %address, "no message handler");
 622                            }
 623                        } else {
 624                            tracing::info!(%user_id, %login, %connection_id, %address, "connection closed");
 625                            break;
 626                        }
 627                    }
 628                }
 629            }
 630
 631            drop(foreground_message_handlers);
 632            tracing::info!(%user_id, %login, %connection_id, %address, "signing out");
 633            if let Err(error) = connection_lost(session, teardown, executor).await {
 634                tracing::error!(%user_id, %login, %connection_id, %address, ?error, "error signing out");
 635            }
 636
 637            Ok(())
 638        }.instrument(span)
 639    }
 640
 641    pub async fn invite_code_redeemed(
 642        self: &Arc<Self>,
 643        inviter_id: UserId,
 644        invitee_id: UserId,
 645    ) -> Result<()> {
 646        if let Some(user) = self.app_state.db.get_user_by_id(inviter_id).await? {
 647            if let Some(code) = &user.invite_code {
 648                let pool = self.connection_pool.lock();
 649                let invitee_contact = contact_for_user(invitee_id, true, false, &pool);
 650                for connection_id in pool.user_connection_ids(inviter_id) {
 651                    self.peer.send(
 652                        connection_id,
 653                        proto::UpdateContacts {
 654                            contacts: vec![invitee_contact.clone()],
 655                            ..Default::default()
 656                        },
 657                    )?;
 658                    self.peer.send(
 659                        connection_id,
 660                        proto::UpdateInviteInfo {
 661                            url: format!("{}{}", self.app_state.config.invite_link_prefix, &code),
 662                            count: user.invite_count as u32,
 663                        },
 664                    )?;
 665                }
 666            }
 667        }
 668        Ok(())
 669    }
 670
 671    pub async fn invite_count_updated(self: &Arc<Self>, user_id: UserId) -> Result<()> {
 672        if let Some(user) = self.app_state.db.get_user_by_id(user_id).await? {
 673            if let Some(invite_code) = &user.invite_code {
 674                let pool = self.connection_pool.lock();
 675                for connection_id in pool.user_connection_ids(user_id) {
 676                    self.peer.send(
 677                        connection_id,
 678                        proto::UpdateInviteInfo {
 679                            url: format!(
 680                                "{}{}",
 681                                self.app_state.config.invite_link_prefix, invite_code
 682                            ),
 683                            count: user.invite_count as u32,
 684                        },
 685                    )?;
 686                }
 687            }
 688        }
 689        Ok(())
 690    }
 691
 692    pub async fn snapshot<'a>(self: &'a Arc<Self>) -> ServerSnapshot<'a> {
 693        ServerSnapshot {
 694            connection_pool: ConnectionPoolGuard {
 695                guard: self.connection_pool.lock(),
 696                _not_send: PhantomData,
 697            },
 698            peer: &self.peer,
 699        }
 700    }
 701}
 702
 703impl<'a> Deref for ConnectionPoolGuard<'a> {
 704    type Target = ConnectionPool;
 705
 706    fn deref(&self) -> &Self::Target {
 707        &*self.guard
 708    }
 709}
 710
 711impl<'a> DerefMut for ConnectionPoolGuard<'a> {
 712    fn deref_mut(&mut self) -> &mut Self::Target {
 713        &mut *self.guard
 714    }
 715}
 716
 717impl<'a> Drop for ConnectionPoolGuard<'a> {
 718    fn drop(&mut self) {
 719        #[cfg(test)]
 720        self.check_invariants();
 721    }
 722}
 723
 724fn broadcast<F>(
 725    sender_id: Option<ConnectionId>,
 726    receiver_ids: impl IntoIterator<Item = ConnectionId>,
 727    mut f: F,
 728) where
 729    F: FnMut(ConnectionId) -> anyhow::Result<()>,
 730{
 731    for receiver_id in receiver_ids {
 732        if Some(receiver_id) != sender_id {
 733            if let Err(error) = f(receiver_id) {
 734                tracing::error!("failed to send to {:?} {}", receiver_id, error);
 735            }
 736        }
 737    }
 738}
 739
 740lazy_static! {
 741    static ref ZED_PROTOCOL_VERSION: HeaderName = HeaderName::from_static("x-zed-protocol-version");
 742}
 743
 744pub struct ProtocolVersion(u32);
 745
 746impl Header for ProtocolVersion {
 747    fn name() -> &'static HeaderName {
 748        &ZED_PROTOCOL_VERSION
 749    }
 750
 751    fn decode<'i, I>(values: &mut I) -> Result<Self, axum::headers::Error>
 752    where
 753        Self: Sized,
 754        I: Iterator<Item = &'i axum::http::HeaderValue>,
 755    {
 756        let version = values
 757            .next()
 758            .ok_or_else(axum::headers::Error::invalid)?
 759            .to_str()
 760            .map_err(|_| axum::headers::Error::invalid())?
 761            .parse()
 762            .map_err(|_| axum::headers::Error::invalid())?;
 763        Ok(Self(version))
 764    }
 765
 766    fn encode<E: Extend<axum::http::HeaderValue>>(&self, values: &mut E) {
 767        values.extend([self.0.to_string().parse().unwrap()]);
 768    }
 769}
 770
 771pub fn routes(server: Arc<Server>) -> Router<Body> {
 772    Router::new()
 773        .route("/rpc", get(handle_websocket_request))
 774        .layer(
 775            ServiceBuilder::new()
 776                .layer(Extension(server.app_state.clone()))
 777                .layer(middleware::from_fn(auth::validate_header)),
 778        )
 779        .route("/metrics", get(handle_metrics))
 780        .layer(Extension(server))
 781}
 782
 783pub async fn handle_websocket_request(
 784    TypedHeader(ProtocolVersion(protocol_version)): TypedHeader<ProtocolVersion>,
 785    ConnectInfo(socket_address): ConnectInfo<SocketAddr>,
 786    Extension(server): Extension<Arc<Server>>,
 787    Extension(user): Extension<User>,
 788    ws: WebSocketUpgrade,
 789) -> axum::response::Response {
 790    if protocol_version != rpc::PROTOCOL_VERSION {
 791        return (
 792            StatusCode::UPGRADE_REQUIRED,
 793            "client must be upgraded".to_string(),
 794        )
 795            .into_response();
 796    }
 797    let socket_address = socket_address.to_string();
 798    ws.on_upgrade(move |socket| {
 799        use util::ResultExt;
 800        let socket = socket
 801            .map_ok(to_tungstenite_message)
 802            .err_into()
 803            .with(|message| async move { Ok(to_axum_message(message)) });
 804        let connection = Connection::new(Box::pin(socket));
 805        async move {
 806            server
 807                .handle_connection(connection, socket_address, user, None, Executor::Production)
 808                .await
 809                .log_err();
 810        }
 811    })
 812}
 813
 814pub async fn handle_metrics(Extension(server): Extension<Arc<Server>>) -> Result<String> {
 815    let connections = server
 816        .connection_pool
 817        .lock()
 818        .connections()
 819        .filter(|connection| !connection.admin)
 820        .count();
 821
 822    METRIC_CONNECTIONS.set(connections as _);
 823
 824    let shared_projects = server.app_state.db.project_count_excluding_admins().await?;
 825    METRIC_SHARED_PROJECTS.set(shared_projects as _);
 826
 827    let encoder = prometheus::TextEncoder::new();
 828    let metric_families = prometheus::gather();
 829    let encoded_metrics = encoder
 830        .encode_to_string(&metric_families)
 831        .map_err(|err| anyhow!("{}", err))?;
 832    Ok(encoded_metrics)
 833}
 834
 835#[instrument(err, skip(executor))]
 836async fn connection_lost(
 837    session: Session,
 838    mut teardown: watch::Receiver<()>,
 839    executor: Executor,
 840) -> Result<()> {
 841    session.peer.disconnect(session.connection_id);
 842    session
 843        .connection_pool()
 844        .await
 845        .remove_connection(session.connection_id)?;
 846
 847    session
 848        .db()
 849        .await
 850        .connection_lost(session.connection_id)
 851        .await
 852        .trace_err();
 853
 854    futures::select_biased! {
 855        _ = executor.sleep(RECONNECT_TIMEOUT).fuse() => {
 856            leave_room_for_session(&session).await.trace_err();
 857
 858            if !session
 859                .connection_pool()
 860                .await
 861                .is_user_online(session.user_id)
 862            {
 863                let db = session.db().await;
 864                if let Some(room) = db.decline_call(None, session.user_id).await.trace_err().flatten() {
 865                    room_updated(&room, &session.peer);
 866                }
 867            }
 868            update_user_contacts(session.user_id, &session).await?;
 869        }
 870        _ = teardown.changed().fuse() => {}
 871    }
 872
 873    Ok(())
 874}
 875
 876async fn ping(_: proto::Ping, response: Response<proto::Ping>, _session: Session) -> Result<()> {
 877    response.send(proto::Ack {})?;
 878    Ok(())
 879}
 880
 881async fn create_room(
 882    _request: proto::CreateRoom,
 883    response: Response<proto::CreateRoom>,
 884    session: Session,
 885) -> Result<()> {
 886    let live_kit_room = nanoid::nanoid!(30);
 887
 888    let live_kit_connection_info = {
 889        let live_kit_room = live_kit_room.clone();
 890        let live_kit = session.live_kit_client.as_ref();
 891
 892        util::async_iife!({
 893            let live_kit = live_kit?;
 894
 895            live_kit
 896                .create_room(live_kit_room.clone())
 897                .await
 898                .trace_err()?;
 899
 900            let token = live_kit
 901                .room_token(&live_kit_room, &session.user_id.to_string())
 902                .trace_err()?;
 903
 904            Some(proto::LiveKitConnectionInfo {
 905                server_url: live_kit.url().into(),
 906                token,
 907            })
 908        })
 909    }
 910    .await;
 911
 912    let room = session
 913        .db()
 914        .await
 915        .create_room(session.user_id, session.connection_id, &live_kit_room)
 916        .await?;
 917
 918    response.send(proto::CreateRoomResponse {
 919        room: Some(room.clone()),
 920        live_kit_connection_info,
 921    })?;
 922
 923    update_user_contacts(session.user_id, &session).await?;
 924    Ok(())
 925}
 926
 927async fn join_room(
 928    request: proto::JoinRoom,
 929    response: Response<proto::JoinRoom>,
 930    session: Session,
 931) -> Result<()> {
 932    let room_id = RoomId::from_proto(request.id);
 933    let room = {
 934        let room = session
 935            .db()
 936            .await
 937            .join_room(room_id, session.user_id, None, session.connection_id)
 938            .await?;
 939        room_updated(&room.room, &session.peer);
 940        room.room.clone()
 941    };
 942
 943    for connection_id in session
 944        .connection_pool()
 945        .await
 946        .user_connection_ids(session.user_id)
 947    {
 948        session
 949            .peer
 950            .send(
 951                connection_id,
 952                proto::CallCanceled {
 953                    room_id: room_id.to_proto(),
 954                },
 955            )
 956            .trace_err();
 957    }
 958
 959    let live_kit_connection_info = if let Some(live_kit) = session.live_kit_client.as_ref() {
 960        if let Some(token) = live_kit
 961            .room_token(&room.live_kit_room, &session.user_id.to_string())
 962            .trace_err()
 963        {
 964            Some(proto::LiveKitConnectionInfo {
 965                server_url: live_kit.url().into(),
 966                token,
 967            })
 968        } else {
 969            None
 970        }
 971    } else {
 972        None
 973    };
 974
 975    response.send(proto::JoinRoomResponse {
 976        room: Some(room),
 977        live_kit_connection_info,
 978    })?;
 979
 980    update_user_contacts(session.user_id, &session).await?;
 981    Ok(())
 982}
 983
 984async fn rejoin_room(
 985    request: proto::RejoinRoom,
 986    response: Response<proto::RejoinRoom>,
 987    session: Session,
 988) -> Result<()> {
 989    let room;
 990    let channel_id;
 991    let channel_members;
 992    {
 993        let mut rejoined_room = session
 994            .db()
 995            .await
 996            .rejoin_room(request, session.user_id, session.connection_id)
 997            .await?;
 998
 999        response.send(proto::RejoinRoomResponse {
1000            room: Some(rejoined_room.room.clone()),
1001            reshared_projects: rejoined_room
1002                .reshared_projects
1003                .iter()
1004                .map(|project| proto::ResharedProject {
1005                    id: project.id.to_proto(),
1006                    collaborators: project
1007                        .collaborators
1008                        .iter()
1009                        .map(|collaborator| collaborator.to_proto())
1010                        .collect(),
1011                })
1012                .collect(),
1013            rejoined_projects: rejoined_room
1014                .rejoined_projects
1015                .iter()
1016                .map(|rejoined_project| proto::RejoinedProject {
1017                    id: rejoined_project.id.to_proto(),
1018                    worktrees: rejoined_project
1019                        .worktrees
1020                        .iter()
1021                        .map(|worktree| proto::WorktreeMetadata {
1022                            id: worktree.id,
1023                            root_name: worktree.root_name.clone(),
1024                            visible: worktree.visible,
1025                            abs_path: worktree.abs_path.clone(),
1026                        })
1027                        .collect(),
1028                    collaborators: rejoined_project
1029                        .collaborators
1030                        .iter()
1031                        .map(|collaborator| collaborator.to_proto())
1032                        .collect(),
1033                    language_servers: rejoined_project.language_servers.clone(),
1034                })
1035                .collect(),
1036        })?;
1037        room_updated(&rejoined_room.room, &session.peer);
1038
1039        for project in &rejoined_room.reshared_projects {
1040            for collaborator in &project.collaborators {
1041                session
1042                    .peer
1043                    .send(
1044                        collaborator.connection_id,
1045                        proto::UpdateProjectCollaborator {
1046                            project_id: project.id.to_proto(),
1047                            old_peer_id: Some(project.old_connection_id.into()),
1048                            new_peer_id: Some(session.connection_id.into()),
1049                        },
1050                    )
1051                    .trace_err();
1052            }
1053
1054            broadcast(
1055                Some(session.connection_id),
1056                project
1057                    .collaborators
1058                    .iter()
1059                    .map(|collaborator| collaborator.connection_id),
1060                |connection_id| {
1061                    session.peer.forward_send(
1062                        session.connection_id,
1063                        connection_id,
1064                        proto::UpdateProject {
1065                            project_id: project.id.to_proto(),
1066                            worktrees: project.worktrees.clone(),
1067                        },
1068                    )
1069                },
1070            );
1071        }
1072
1073        for project in &rejoined_room.rejoined_projects {
1074            for collaborator in &project.collaborators {
1075                session
1076                    .peer
1077                    .send(
1078                        collaborator.connection_id,
1079                        proto::UpdateProjectCollaborator {
1080                            project_id: project.id.to_proto(),
1081                            old_peer_id: Some(project.old_connection_id.into()),
1082                            new_peer_id: Some(session.connection_id.into()),
1083                        },
1084                    )
1085                    .trace_err();
1086            }
1087        }
1088
1089        for project in &mut rejoined_room.rejoined_projects {
1090            for worktree in mem::take(&mut project.worktrees) {
1091                #[cfg(any(test, feature = "test-support"))]
1092                const MAX_CHUNK_SIZE: usize = 2;
1093                #[cfg(not(any(test, feature = "test-support")))]
1094                const MAX_CHUNK_SIZE: usize = 256;
1095
1096                // Stream this worktree's entries.
1097                let message = proto::UpdateWorktree {
1098                    project_id: project.id.to_proto(),
1099                    worktree_id: worktree.id,
1100                    abs_path: worktree.abs_path.clone(),
1101                    root_name: worktree.root_name,
1102                    updated_entries: worktree.updated_entries,
1103                    removed_entries: worktree.removed_entries,
1104                    scan_id: worktree.scan_id,
1105                    is_last_update: worktree.completed_scan_id == worktree.scan_id,
1106                    updated_repositories: worktree.updated_repositories,
1107                    removed_repositories: worktree.removed_repositories,
1108                };
1109                for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1110                    session.peer.send(session.connection_id, update.clone())?;
1111                }
1112
1113                // Stream this worktree's diagnostics.
1114                for summary in worktree.diagnostic_summaries {
1115                    session.peer.send(
1116                        session.connection_id,
1117                        proto::UpdateDiagnosticSummary {
1118                            project_id: project.id.to_proto(),
1119                            worktree_id: worktree.id,
1120                            summary: Some(summary),
1121                        },
1122                    )?;
1123                }
1124
1125                for settings_file in worktree.settings_files {
1126                    session.peer.send(
1127                        session.connection_id,
1128                        proto::UpdateWorktreeSettings {
1129                            project_id: project.id.to_proto(),
1130                            worktree_id: worktree.id,
1131                            path: settings_file.path,
1132                            content: Some(settings_file.content),
1133                        },
1134                    )?;
1135                }
1136            }
1137
1138            for language_server in &project.language_servers {
1139                session.peer.send(
1140                    session.connection_id,
1141                    proto::UpdateLanguageServer {
1142                        project_id: project.id.to_proto(),
1143                        language_server_id: language_server.id,
1144                        variant: Some(
1145                            proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1146                                proto::LspDiskBasedDiagnosticsUpdated {},
1147                            ),
1148                        ),
1149                    },
1150                )?;
1151            }
1152        }
1153
1154        room = mem::take(&mut rejoined_room.room);
1155        channel_id = rejoined_room.channel_id;
1156        channel_members = mem::take(&mut rejoined_room.channel_members);
1157    }
1158
1159    if let Some(channel_id) = channel_id {
1160        channel_updated(
1161            channel_id,
1162            &room,
1163            &channel_members,
1164            &session.peer,
1165            &*session.connection_pool().await,
1166        );
1167    }
1168
1169    update_user_contacts(session.user_id, &session).await?;
1170    Ok(())
1171}
1172
1173async fn leave_room(
1174    _: proto::LeaveRoom,
1175    response: Response<proto::LeaveRoom>,
1176    session: Session,
1177) -> Result<()> {
1178    leave_room_for_session(&session).await?;
1179    response.send(proto::Ack {})?;
1180    Ok(())
1181}
1182
1183async fn call(
1184    request: proto::Call,
1185    response: Response<proto::Call>,
1186    session: Session,
1187) -> Result<()> {
1188    let room_id = RoomId::from_proto(request.room_id);
1189    let calling_user_id = session.user_id;
1190    let calling_connection_id = session.connection_id;
1191    let called_user_id = UserId::from_proto(request.called_user_id);
1192    let initial_project_id = request.initial_project_id.map(ProjectId::from_proto);
1193    if !session
1194        .db()
1195        .await
1196        .has_contact(calling_user_id, called_user_id)
1197        .await?
1198    {
1199        return Err(anyhow!("cannot call a user who isn't a contact"))?;
1200    }
1201
1202    let incoming_call = {
1203        let (room, incoming_call) = &mut *session
1204            .db()
1205            .await
1206            .call(
1207                room_id,
1208                calling_user_id,
1209                calling_connection_id,
1210                called_user_id,
1211                initial_project_id,
1212            )
1213            .await?;
1214        room_updated(&room, &session.peer);
1215        mem::take(incoming_call)
1216    };
1217    update_user_contacts(called_user_id, &session).await?;
1218
1219    let mut calls = session
1220        .connection_pool()
1221        .await
1222        .user_connection_ids(called_user_id)
1223        .map(|connection_id| session.peer.request(connection_id, incoming_call.clone()))
1224        .collect::<FuturesUnordered<_>>();
1225
1226    while let Some(call_response) = calls.next().await {
1227        match call_response.as_ref() {
1228            Ok(_) => {
1229                response.send(proto::Ack {})?;
1230                return Ok(());
1231            }
1232            Err(_) => {
1233                call_response.trace_err();
1234            }
1235        }
1236    }
1237
1238    {
1239        let room = session
1240            .db()
1241            .await
1242            .call_failed(room_id, called_user_id)
1243            .await?;
1244        room_updated(&room, &session.peer);
1245    }
1246    update_user_contacts(called_user_id, &session).await?;
1247
1248    Err(anyhow!("failed to ring user"))?
1249}
1250
1251async fn cancel_call(
1252    request: proto::CancelCall,
1253    response: Response<proto::CancelCall>,
1254    session: Session,
1255) -> Result<()> {
1256    let called_user_id = UserId::from_proto(request.called_user_id);
1257    let room_id = RoomId::from_proto(request.room_id);
1258    {
1259        let room = session
1260            .db()
1261            .await
1262            .cancel_call(room_id, session.connection_id, called_user_id)
1263            .await?;
1264        room_updated(&room, &session.peer);
1265    }
1266
1267    for connection_id in session
1268        .connection_pool()
1269        .await
1270        .user_connection_ids(called_user_id)
1271    {
1272        session
1273            .peer
1274            .send(
1275                connection_id,
1276                proto::CallCanceled {
1277                    room_id: room_id.to_proto(),
1278                },
1279            )
1280            .trace_err();
1281    }
1282    response.send(proto::Ack {})?;
1283
1284    update_user_contacts(called_user_id, &session).await?;
1285    Ok(())
1286}
1287
1288async fn decline_call(message: proto::DeclineCall, session: Session) -> Result<()> {
1289    let room_id = RoomId::from_proto(message.room_id);
1290    {
1291        let room = session
1292            .db()
1293            .await
1294            .decline_call(Some(room_id), session.user_id)
1295            .await?
1296            .ok_or_else(|| anyhow!("failed to decline call"))?;
1297        room_updated(&room, &session.peer);
1298    }
1299
1300    for connection_id in session
1301        .connection_pool()
1302        .await
1303        .user_connection_ids(session.user_id)
1304    {
1305        session
1306            .peer
1307            .send(
1308                connection_id,
1309                proto::CallCanceled {
1310                    room_id: room_id.to_proto(),
1311                },
1312            )
1313            .trace_err();
1314    }
1315    update_user_contacts(session.user_id, &session).await?;
1316    Ok(())
1317}
1318
1319async fn update_participant_location(
1320    request: proto::UpdateParticipantLocation,
1321    response: Response<proto::UpdateParticipantLocation>,
1322    session: Session,
1323) -> Result<()> {
1324    let room_id = RoomId::from_proto(request.room_id);
1325    let location = request
1326        .location
1327        .ok_or_else(|| anyhow!("invalid location"))?;
1328
1329    let db = session.db().await;
1330    let room = db
1331        .update_room_participant_location(room_id, session.connection_id, location)
1332        .await?;
1333
1334    room_updated(&room, &session.peer);
1335    response.send(proto::Ack {})?;
1336    Ok(())
1337}
1338
1339async fn share_project(
1340    request: proto::ShareProject,
1341    response: Response<proto::ShareProject>,
1342    session: Session,
1343) -> Result<()> {
1344    let (project_id, room) = &*session
1345        .db()
1346        .await
1347        .share_project(
1348            RoomId::from_proto(request.room_id),
1349            session.connection_id,
1350            &request.worktrees,
1351        )
1352        .await?;
1353    response.send(proto::ShareProjectResponse {
1354        project_id: project_id.to_proto(),
1355    })?;
1356    room_updated(&room, &session.peer);
1357
1358    Ok(())
1359}
1360
1361async fn unshare_project(message: proto::UnshareProject, session: Session) -> Result<()> {
1362    let project_id = ProjectId::from_proto(message.project_id);
1363
1364    let (room, guest_connection_ids) = &*session
1365        .db()
1366        .await
1367        .unshare_project(project_id, session.connection_id)
1368        .await?;
1369
1370    broadcast(
1371        Some(session.connection_id),
1372        guest_connection_ids.iter().copied(),
1373        |conn_id| session.peer.send(conn_id, message.clone()),
1374    );
1375    room_updated(&room, &session.peer);
1376
1377    Ok(())
1378}
1379
1380async fn join_project(
1381    request: proto::JoinProject,
1382    response: Response<proto::JoinProject>,
1383    session: Session,
1384) -> Result<()> {
1385    let project_id = ProjectId::from_proto(request.project_id);
1386    let guest_user_id = session.user_id;
1387
1388    tracing::info!(%project_id, "join project");
1389
1390    let (project, replica_id) = &mut *session
1391        .db()
1392        .await
1393        .join_project(project_id, session.connection_id)
1394        .await?;
1395
1396    let collaborators = project
1397        .collaborators
1398        .iter()
1399        .filter(|collaborator| collaborator.connection_id != session.connection_id)
1400        .map(|collaborator| collaborator.to_proto())
1401        .collect::<Vec<_>>();
1402
1403    let worktrees = project
1404        .worktrees
1405        .iter()
1406        .map(|(id, worktree)| proto::WorktreeMetadata {
1407            id: *id,
1408            root_name: worktree.root_name.clone(),
1409            visible: worktree.visible,
1410            abs_path: worktree.abs_path.clone(),
1411        })
1412        .collect::<Vec<_>>();
1413
1414    for collaborator in &collaborators {
1415        session
1416            .peer
1417            .send(
1418                collaborator.peer_id.unwrap().into(),
1419                proto::AddProjectCollaborator {
1420                    project_id: project_id.to_proto(),
1421                    collaborator: Some(proto::Collaborator {
1422                        peer_id: Some(session.connection_id.into()),
1423                        replica_id: replica_id.0 as u32,
1424                        user_id: guest_user_id.to_proto(),
1425                    }),
1426                },
1427            )
1428            .trace_err();
1429    }
1430
1431    // First, we send the metadata associated with each worktree.
1432    response.send(proto::JoinProjectResponse {
1433        worktrees: worktrees.clone(),
1434        replica_id: replica_id.0 as u32,
1435        collaborators: collaborators.clone(),
1436        language_servers: project.language_servers.clone(),
1437    })?;
1438
1439    for (worktree_id, worktree) in mem::take(&mut project.worktrees) {
1440        #[cfg(any(test, feature = "test-support"))]
1441        const MAX_CHUNK_SIZE: usize = 2;
1442        #[cfg(not(any(test, feature = "test-support")))]
1443        const MAX_CHUNK_SIZE: usize = 256;
1444
1445        // Stream this worktree's entries.
1446        let message = proto::UpdateWorktree {
1447            project_id: project_id.to_proto(),
1448            worktree_id,
1449            abs_path: worktree.abs_path.clone(),
1450            root_name: worktree.root_name,
1451            updated_entries: worktree.entries,
1452            removed_entries: Default::default(),
1453            scan_id: worktree.scan_id,
1454            is_last_update: worktree.scan_id == worktree.completed_scan_id,
1455            updated_repositories: worktree.repository_entries.into_values().collect(),
1456            removed_repositories: Default::default(),
1457        };
1458        for update in proto::split_worktree_update(message, MAX_CHUNK_SIZE) {
1459            session.peer.send(session.connection_id, update.clone())?;
1460        }
1461
1462        // Stream this worktree's diagnostics.
1463        for summary in worktree.diagnostic_summaries {
1464            session.peer.send(
1465                session.connection_id,
1466                proto::UpdateDiagnosticSummary {
1467                    project_id: project_id.to_proto(),
1468                    worktree_id: worktree.id,
1469                    summary: Some(summary),
1470                },
1471            )?;
1472        }
1473
1474        for settings_file in worktree.settings_files {
1475            session.peer.send(
1476                session.connection_id,
1477                proto::UpdateWorktreeSettings {
1478                    project_id: project_id.to_proto(),
1479                    worktree_id: worktree.id,
1480                    path: settings_file.path,
1481                    content: Some(settings_file.content),
1482                },
1483            )?;
1484        }
1485    }
1486
1487    for language_server in &project.language_servers {
1488        session.peer.send(
1489            session.connection_id,
1490            proto::UpdateLanguageServer {
1491                project_id: project_id.to_proto(),
1492                language_server_id: language_server.id,
1493                variant: Some(
1494                    proto::update_language_server::Variant::DiskBasedDiagnosticsUpdated(
1495                        proto::LspDiskBasedDiagnosticsUpdated {},
1496                    ),
1497                ),
1498            },
1499        )?;
1500    }
1501
1502    Ok(())
1503}
1504
1505async fn leave_project(request: proto::LeaveProject, session: Session) -> Result<()> {
1506    let sender_id = session.connection_id;
1507    let project_id = ProjectId::from_proto(request.project_id);
1508
1509    let (room, project) = &*session
1510        .db()
1511        .await
1512        .leave_project(project_id, sender_id)
1513        .await?;
1514    tracing::info!(
1515        %project_id,
1516        host_user_id = %project.host_user_id,
1517        host_connection_id = %project.host_connection_id,
1518        "leave project"
1519    );
1520
1521    project_left(&project, &session);
1522    room_updated(&room, &session.peer);
1523
1524    Ok(())
1525}
1526
1527async fn update_project(
1528    request: proto::UpdateProject,
1529    response: Response<proto::UpdateProject>,
1530    session: Session,
1531) -> Result<()> {
1532    let project_id = ProjectId::from_proto(request.project_id);
1533    let (room, guest_connection_ids) = &*session
1534        .db()
1535        .await
1536        .update_project(project_id, session.connection_id, &request.worktrees)
1537        .await?;
1538    broadcast(
1539        Some(session.connection_id),
1540        guest_connection_ids.iter().copied(),
1541        |connection_id| {
1542            session
1543                .peer
1544                .forward_send(session.connection_id, connection_id, request.clone())
1545        },
1546    );
1547    room_updated(&room, &session.peer);
1548    response.send(proto::Ack {})?;
1549
1550    Ok(())
1551}
1552
1553async fn update_worktree(
1554    request: proto::UpdateWorktree,
1555    response: Response<proto::UpdateWorktree>,
1556    session: Session,
1557) -> Result<()> {
1558    let guest_connection_ids = session
1559        .db()
1560        .await
1561        .update_worktree(&request, session.connection_id)
1562        .await?;
1563
1564    broadcast(
1565        Some(session.connection_id),
1566        guest_connection_ids.iter().copied(),
1567        |connection_id| {
1568            session
1569                .peer
1570                .forward_send(session.connection_id, connection_id, request.clone())
1571        },
1572    );
1573    response.send(proto::Ack {})?;
1574    Ok(())
1575}
1576
1577async fn update_diagnostic_summary(
1578    message: proto::UpdateDiagnosticSummary,
1579    session: Session,
1580) -> Result<()> {
1581    let guest_connection_ids = session
1582        .db()
1583        .await
1584        .update_diagnostic_summary(&message, session.connection_id)
1585        .await?;
1586
1587    broadcast(
1588        Some(session.connection_id),
1589        guest_connection_ids.iter().copied(),
1590        |connection_id| {
1591            session
1592                .peer
1593                .forward_send(session.connection_id, connection_id, message.clone())
1594        },
1595    );
1596
1597    Ok(())
1598}
1599
1600async fn update_worktree_settings(
1601    message: proto::UpdateWorktreeSettings,
1602    session: Session,
1603) -> Result<()> {
1604    let guest_connection_ids = session
1605        .db()
1606        .await
1607        .update_worktree_settings(&message, session.connection_id)
1608        .await?;
1609
1610    broadcast(
1611        Some(session.connection_id),
1612        guest_connection_ids.iter().copied(),
1613        |connection_id| {
1614            session
1615                .peer
1616                .forward_send(session.connection_id, connection_id, message.clone())
1617        },
1618    );
1619
1620    Ok(())
1621}
1622
1623async fn refresh_inlay_hints(request: proto::RefreshInlayHints, session: Session) -> Result<()> {
1624    broadcast_project_message(request.project_id, request, session).await
1625}
1626
1627async fn start_language_server(
1628    request: proto::StartLanguageServer,
1629    session: Session,
1630) -> Result<()> {
1631    let guest_connection_ids = session
1632        .db()
1633        .await
1634        .start_language_server(&request, session.connection_id)
1635        .await?;
1636
1637    broadcast(
1638        Some(session.connection_id),
1639        guest_connection_ids.iter().copied(),
1640        |connection_id| {
1641            session
1642                .peer
1643                .forward_send(session.connection_id, connection_id, request.clone())
1644        },
1645    );
1646    Ok(())
1647}
1648
1649async fn update_language_server(
1650    request: proto::UpdateLanguageServer,
1651    session: Session,
1652) -> Result<()> {
1653    session.executor.record_backtrace();
1654    let project_id = ProjectId::from_proto(request.project_id);
1655    let project_connection_ids = session
1656        .db()
1657        .await
1658        .project_connection_ids(project_id, session.connection_id)
1659        .await?;
1660    broadcast(
1661        Some(session.connection_id),
1662        project_connection_ids.iter().copied(),
1663        |connection_id| {
1664            session
1665                .peer
1666                .forward_send(session.connection_id, connection_id, request.clone())
1667        },
1668    );
1669    Ok(())
1670}
1671
1672async fn forward_project_request<T>(
1673    request: T,
1674    response: Response<T>,
1675    session: Session,
1676) -> Result<()>
1677where
1678    T: EntityMessage + RequestMessage,
1679{
1680    session.executor.record_backtrace();
1681    let project_id = ProjectId::from_proto(request.remote_entity_id());
1682    let host_connection_id = {
1683        let collaborators = session
1684            .db()
1685            .await
1686            .project_collaborators(project_id, session.connection_id)
1687            .await?;
1688        collaborators
1689            .iter()
1690            .find(|collaborator| collaborator.is_host)
1691            .ok_or_else(|| anyhow!("host not found"))?
1692            .connection_id
1693    };
1694
1695    let payload = session
1696        .peer
1697        .forward_request(session.connection_id, host_connection_id, request)
1698        .await?;
1699
1700    response.send(payload)?;
1701    Ok(())
1702}
1703
1704async fn create_buffer_for_peer(
1705    request: proto::CreateBufferForPeer,
1706    session: Session,
1707) -> Result<()> {
1708    session.executor.record_backtrace();
1709    let peer_id = request.peer_id.ok_or_else(|| anyhow!("invalid peer id"))?;
1710    session
1711        .peer
1712        .forward_send(session.connection_id, peer_id.into(), request)?;
1713    Ok(())
1714}
1715
1716async fn update_buffer(
1717    request: proto::UpdateBuffer,
1718    response: Response<proto::UpdateBuffer>,
1719    session: Session,
1720) -> Result<()> {
1721    session.executor.record_backtrace();
1722    let project_id = ProjectId::from_proto(request.project_id);
1723    let mut guest_connection_ids;
1724    let mut host_connection_id = None;
1725    {
1726        let collaborators = session
1727            .db()
1728            .await
1729            .project_collaborators(project_id, session.connection_id)
1730            .await?;
1731        guest_connection_ids = Vec::with_capacity(collaborators.len() - 1);
1732        for collaborator in collaborators.iter() {
1733            if collaborator.is_host {
1734                host_connection_id = Some(collaborator.connection_id);
1735            } else {
1736                guest_connection_ids.push(collaborator.connection_id);
1737            }
1738        }
1739    }
1740    let host_connection_id = host_connection_id.ok_or_else(|| anyhow!("host not found"))?;
1741
1742    session.executor.record_backtrace();
1743    broadcast(
1744        Some(session.connection_id),
1745        guest_connection_ids,
1746        |connection_id| {
1747            session
1748                .peer
1749                .forward_send(session.connection_id, connection_id, request.clone())
1750        },
1751    );
1752    if host_connection_id != session.connection_id {
1753        session
1754            .peer
1755            .forward_request(session.connection_id, host_connection_id, request.clone())
1756            .await?;
1757    }
1758
1759    response.send(proto::Ack {})?;
1760    Ok(())
1761}
1762
1763async fn update_buffer_file(request: proto::UpdateBufferFile, session: Session) -> Result<()> {
1764    let project_id = ProjectId::from_proto(request.project_id);
1765    let project_connection_ids = session
1766        .db()
1767        .await
1768        .project_connection_ids(project_id, session.connection_id)
1769        .await?;
1770
1771    broadcast(
1772        Some(session.connection_id),
1773        project_connection_ids.iter().copied(),
1774        |connection_id| {
1775            session
1776                .peer
1777                .forward_send(session.connection_id, connection_id, request.clone())
1778        },
1779    );
1780    Ok(())
1781}
1782
1783async fn buffer_reloaded(request: proto::BufferReloaded, session: Session) -> Result<()> {
1784    let project_id = ProjectId::from_proto(request.project_id);
1785    let project_connection_ids = session
1786        .db()
1787        .await
1788        .project_connection_ids(project_id, session.connection_id)
1789        .await?;
1790    broadcast(
1791        Some(session.connection_id),
1792        project_connection_ids.iter().copied(),
1793        |connection_id| {
1794            session
1795                .peer
1796                .forward_send(session.connection_id, connection_id, request.clone())
1797        },
1798    );
1799    Ok(())
1800}
1801
1802async fn buffer_saved(request: proto::BufferSaved, session: Session) -> Result<()> {
1803    broadcast_project_message(request.project_id, request, session).await
1804}
1805
1806async fn broadcast_project_message<T: EnvelopedMessage>(
1807    project_id: u64,
1808    request: T,
1809    session: Session,
1810) -> Result<()> {
1811    let project_id = ProjectId::from_proto(project_id);
1812    let project_connection_ids = session
1813        .db()
1814        .await
1815        .project_connection_ids(project_id, session.connection_id)
1816        .await?;
1817    broadcast(
1818        Some(session.connection_id),
1819        project_connection_ids.iter().copied(),
1820        |connection_id| {
1821            session
1822                .peer
1823                .forward_send(session.connection_id, connection_id, request.clone())
1824        },
1825    );
1826    Ok(())
1827}
1828
1829async fn follow(
1830    request: proto::Follow,
1831    response: Response<proto::Follow>,
1832    session: Session,
1833) -> Result<()> {
1834    let project_id = ProjectId::from_proto(request.project_id);
1835    let leader_id = request
1836        .leader_id
1837        .ok_or_else(|| anyhow!("invalid leader id"))?
1838        .into();
1839    let follower_id = session.connection_id;
1840
1841    {
1842        let project_connection_ids = session
1843            .db()
1844            .await
1845            .project_connection_ids(project_id, session.connection_id)
1846            .await?;
1847
1848        if !project_connection_ids.contains(&leader_id) {
1849            Err(anyhow!("no such peer"))?;
1850        }
1851    }
1852
1853    let mut response_payload = session
1854        .peer
1855        .forward_request(session.connection_id, leader_id, request)
1856        .await?;
1857    response_payload
1858        .views
1859        .retain(|view| view.leader_id != Some(follower_id.into()));
1860    response.send(response_payload)?;
1861
1862    let room = session
1863        .db()
1864        .await
1865        .follow(project_id, leader_id, follower_id)
1866        .await?;
1867    room_updated(&room, &session.peer);
1868
1869    Ok(())
1870}
1871
1872async fn unfollow(request: proto::Unfollow, session: Session) -> Result<()> {
1873    let project_id = ProjectId::from_proto(request.project_id);
1874    let leader_id = request
1875        .leader_id
1876        .ok_or_else(|| anyhow!("invalid leader id"))?
1877        .into();
1878    let follower_id = session.connection_id;
1879
1880    if !session
1881        .db()
1882        .await
1883        .project_connection_ids(project_id, session.connection_id)
1884        .await?
1885        .contains(&leader_id)
1886    {
1887        Err(anyhow!("no such peer"))?;
1888    }
1889
1890    session
1891        .peer
1892        .forward_send(session.connection_id, leader_id, request)?;
1893
1894    let room = session
1895        .db()
1896        .await
1897        .unfollow(project_id, leader_id, follower_id)
1898        .await?;
1899    room_updated(&room, &session.peer);
1900
1901    Ok(())
1902}
1903
1904async fn update_followers(request: proto::UpdateFollowers, session: Session) -> Result<()> {
1905    let project_id = ProjectId::from_proto(request.project_id);
1906    let project_connection_ids = session
1907        .db
1908        .lock()
1909        .await
1910        .project_connection_ids(project_id, session.connection_id)
1911        .await?;
1912
1913    let leader_id = request.variant.as_ref().and_then(|variant| match variant {
1914        proto::update_followers::Variant::CreateView(payload) => payload.leader_id,
1915        proto::update_followers::Variant::UpdateView(payload) => payload.leader_id,
1916        proto::update_followers::Variant::UpdateActiveView(payload) => payload.leader_id,
1917    });
1918    for follower_peer_id in request.follower_ids.iter().copied() {
1919        let follower_connection_id = follower_peer_id.into();
1920        if project_connection_ids.contains(&follower_connection_id)
1921            && Some(follower_peer_id) != leader_id
1922        {
1923            session.peer.forward_send(
1924                session.connection_id,
1925                follower_connection_id,
1926                request.clone(),
1927            )?;
1928        }
1929    }
1930    Ok(())
1931}
1932
1933async fn get_users(
1934    request: proto::GetUsers,
1935    response: Response<proto::GetUsers>,
1936    session: Session,
1937) -> Result<()> {
1938    let user_ids = request
1939        .user_ids
1940        .into_iter()
1941        .map(UserId::from_proto)
1942        .collect();
1943    let users = session
1944        .db()
1945        .await
1946        .get_users_by_ids(user_ids)
1947        .await?
1948        .into_iter()
1949        .map(|user| proto::User {
1950            id: user.id.to_proto(),
1951            avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1952            github_login: user.github_login,
1953        })
1954        .collect();
1955    response.send(proto::UsersResponse { users })?;
1956    Ok(())
1957}
1958
1959async fn fuzzy_search_users(
1960    request: proto::FuzzySearchUsers,
1961    response: Response<proto::FuzzySearchUsers>,
1962    session: Session,
1963) -> Result<()> {
1964    let query = request.query;
1965    let users = match query.len() {
1966        0 => vec![],
1967        1 | 2 => session
1968            .db()
1969            .await
1970            .get_user_by_github_login(&query)
1971            .await?
1972            .into_iter()
1973            .collect(),
1974        _ => session.db().await.fuzzy_search_users(&query, 10).await?,
1975    };
1976    let users = users
1977        .into_iter()
1978        .filter(|user| user.id != session.user_id)
1979        .map(|user| proto::User {
1980            id: user.id.to_proto(),
1981            avatar_url: format!("https://github.com/{}.png?size=128", user.github_login),
1982            github_login: user.github_login,
1983        })
1984        .collect();
1985    response.send(proto::UsersResponse { users })?;
1986    Ok(())
1987}
1988
1989async fn request_contact(
1990    request: proto::RequestContact,
1991    response: Response<proto::RequestContact>,
1992    session: Session,
1993) -> Result<()> {
1994    let requester_id = session.user_id;
1995    let responder_id = UserId::from_proto(request.responder_id);
1996    if requester_id == responder_id {
1997        return Err(anyhow!("cannot add yourself as a contact"))?;
1998    }
1999
2000    session
2001        .db()
2002        .await
2003        .send_contact_request(requester_id, responder_id)
2004        .await?;
2005
2006    // Update outgoing contact requests of requester
2007    let mut update = proto::UpdateContacts::default();
2008    update.outgoing_requests.push(responder_id.to_proto());
2009    for connection_id in session
2010        .connection_pool()
2011        .await
2012        .user_connection_ids(requester_id)
2013    {
2014        session.peer.send(connection_id, update.clone())?;
2015    }
2016
2017    // Update incoming contact requests of responder
2018    let mut update = proto::UpdateContacts::default();
2019    update
2020        .incoming_requests
2021        .push(proto::IncomingContactRequest {
2022            requester_id: requester_id.to_proto(),
2023            should_notify: true,
2024        });
2025    for connection_id in session
2026        .connection_pool()
2027        .await
2028        .user_connection_ids(responder_id)
2029    {
2030        session.peer.send(connection_id, update.clone())?;
2031    }
2032
2033    response.send(proto::Ack {})?;
2034    Ok(())
2035}
2036
2037async fn respond_to_contact_request(
2038    request: proto::RespondToContactRequest,
2039    response: Response<proto::RespondToContactRequest>,
2040    session: Session,
2041) -> Result<()> {
2042    let responder_id = session.user_id;
2043    let requester_id = UserId::from_proto(request.requester_id);
2044    let db = session.db().await;
2045    if request.response == proto::ContactRequestResponse::Dismiss as i32 {
2046        db.dismiss_contact_notification(responder_id, requester_id)
2047            .await?;
2048    } else {
2049        let accept = request.response == proto::ContactRequestResponse::Accept as i32;
2050
2051        db.respond_to_contact_request(responder_id, requester_id, accept)
2052            .await?;
2053        let requester_busy = db.is_user_busy(requester_id).await?;
2054        let responder_busy = db.is_user_busy(responder_id).await?;
2055
2056        let pool = session.connection_pool().await;
2057        // Update responder with new contact
2058        let mut update = proto::UpdateContacts::default();
2059        if accept {
2060            update
2061                .contacts
2062                .push(contact_for_user(requester_id, false, requester_busy, &pool));
2063        }
2064        update
2065            .remove_incoming_requests
2066            .push(requester_id.to_proto());
2067        for connection_id in pool.user_connection_ids(responder_id) {
2068            session.peer.send(connection_id, update.clone())?;
2069        }
2070
2071        // Update requester with new contact
2072        let mut update = proto::UpdateContacts::default();
2073        if accept {
2074            update
2075                .contacts
2076                .push(contact_for_user(responder_id, true, responder_busy, &pool));
2077        }
2078        update
2079            .remove_outgoing_requests
2080            .push(responder_id.to_proto());
2081        for connection_id in pool.user_connection_ids(requester_id) {
2082            session.peer.send(connection_id, update.clone())?;
2083        }
2084    }
2085
2086    response.send(proto::Ack {})?;
2087    Ok(())
2088}
2089
2090async fn remove_contact(
2091    request: proto::RemoveContact,
2092    response: Response<proto::RemoveContact>,
2093    session: Session,
2094) -> Result<()> {
2095    let requester_id = session.user_id;
2096    let responder_id = UserId::from_proto(request.user_id);
2097    let db = session.db().await;
2098    let contact_accepted = db.remove_contact(requester_id, responder_id).await?;
2099
2100    let pool = session.connection_pool().await;
2101    // Update outgoing contact requests of requester
2102    let mut update = proto::UpdateContacts::default();
2103    if contact_accepted {
2104        update.remove_contacts.push(responder_id.to_proto());
2105    } else {
2106        update
2107            .remove_outgoing_requests
2108            .push(responder_id.to_proto());
2109    }
2110    for connection_id in pool.user_connection_ids(requester_id) {
2111        session.peer.send(connection_id, update.clone())?;
2112    }
2113
2114    // Update incoming contact requests of responder
2115    let mut update = proto::UpdateContacts::default();
2116    if contact_accepted {
2117        update.remove_contacts.push(requester_id.to_proto());
2118    } else {
2119        update
2120            .remove_incoming_requests
2121            .push(requester_id.to_proto());
2122    }
2123    for connection_id in pool.user_connection_ids(responder_id) {
2124        session.peer.send(connection_id, update.clone())?;
2125    }
2126
2127    response.send(proto::Ack {})?;
2128    Ok(())
2129}
2130
2131async fn create_channel(
2132    request: proto::CreateChannel,
2133    response: Response<proto::CreateChannel>,
2134    session: Session,
2135) -> Result<()> {
2136    let db = session.db().await;
2137    let live_kit_room = format!("channel-{}", nanoid::nanoid!(30));
2138
2139    if let Some(live_kit) = session.live_kit_client.as_ref() {
2140        live_kit.create_room(live_kit_room.clone()).await?;
2141    }
2142
2143    let parent_id = request.parent_id.map(|id| ChannelId::from_proto(id));
2144    let id = db
2145        .create_channel(&request.name, parent_id, &live_kit_room, session.user_id)
2146        .await?;
2147
2148    let channel = proto::Channel {
2149        id: id.to_proto(),
2150        name: request.name,
2151        parent_id: request.parent_id,
2152    };
2153
2154    response.send(proto::ChannelResponse {
2155        channel: Some(channel.clone()),
2156    })?;
2157
2158    let mut update = proto::UpdateChannels::default();
2159    update.channels.push(channel);
2160
2161    let user_ids_to_notify = if let Some(parent_id) = parent_id {
2162        db.get_channel_members(parent_id).await?
2163    } else {
2164        vec![session.user_id]
2165    };
2166
2167    let connection_pool = session.connection_pool().await;
2168    for user_id in user_ids_to_notify {
2169        for connection_id in connection_pool.user_connection_ids(user_id) {
2170            let mut update = update.clone();
2171            if user_id == session.user_id {
2172                update.channel_permissions.push(proto::ChannelPermission {
2173                    channel_id: id.to_proto(),
2174                    is_admin: true,
2175                });
2176            }
2177            session.peer.send(connection_id, update)?;
2178        }
2179    }
2180
2181    Ok(())
2182}
2183
2184async fn remove_channel(
2185    request: proto::RemoveChannel,
2186    response: Response<proto::RemoveChannel>,
2187    session: Session,
2188) -> Result<()> {
2189    let db = session.db().await;
2190
2191    let channel_id = request.channel_id;
2192    let (removed_channels, member_ids) = db
2193        .remove_channel(ChannelId::from_proto(channel_id), session.user_id)
2194        .await?;
2195    response.send(proto::Ack {})?;
2196
2197    // Notify members of removed channels
2198    let mut update = proto::UpdateChannels::default();
2199    update
2200        .remove_channels
2201        .extend(removed_channels.into_iter().map(|id| id.to_proto()));
2202
2203    let connection_pool = session.connection_pool().await;
2204    for member_id in member_ids {
2205        for connection_id in connection_pool.user_connection_ids(member_id) {
2206            session.peer.send(connection_id, update.clone())?;
2207        }
2208    }
2209
2210    Ok(())
2211}
2212
2213async fn invite_channel_member(
2214    request: proto::InviteChannelMember,
2215    response: Response<proto::InviteChannelMember>,
2216    session: Session,
2217) -> Result<()> {
2218    let db = session.db().await;
2219    let channel_id = ChannelId::from_proto(request.channel_id);
2220    let invitee_id = UserId::from_proto(request.user_id);
2221    db.invite_channel_member(channel_id, invitee_id, session.user_id, request.admin)
2222        .await?;
2223
2224    let (channel, _) = db
2225        .get_channel(channel_id, session.user_id)
2226        .await?
2227        .ok_or_else(|| anyhow!("channel not found"))?;
2228
2229    let mut update = proto::UpdateChannels::default();
2230    update.channel_invitations.push(proto::Channel {
2231        id: channel.id.to_proto(),
2232        name: channel.name,
2233        parent_id: None,
2234    });
2235    for connection_id in session
2236        .connection_pool()
2237        .await
2238        .user_connection_ids(invitee_id)
2239    {
2240        session.peer.send(connection_id, update.clone())?;
2241    }
2242
2243    response.send(proto::Ack {})?;
2244    Ok(())
2245}
2246
2247async fn remove_channel_member(
2248    request: proto::RemoveChannelMember,
2249    response: Response<proto::RemoveChannelMember>,
2250    session: Session,
2251) -> Result<()> {
2252    let db = session.db().await;
2253    let channel_id = ChannelId::from_proto(request.channel_id);
2254    let member_id = UserId::from_proto(request.user_id);
2255
2256    db.remove_channel_member(channel_id, member_id, session.user_id)
2257        .await?;
2258
2259    let mut update = proto::UpdateChannels::default();
2260    update.remove_channels.push(channel_id.to_proto());
2261
2262    for connection_id in session
2263        .connection_pool()
2264        .await
2265        .user_connection_ids(member_id)
2266    {
2267        session.peer.send(connection_id, update.clone())?;
2268    }
2269
2270    response.send(proto::Ack {})?;
2271    Ok(())
2272}
2273
2274async fn set_channel_member_admin(
2275    request: proto::SetChannelMemberAdmin,
2276    response: Response<proto::SetChannelMemberAdmin>,
2277    session: Session,
2278) -> Result<()> {
2279    let db = session.db().await;
2280    let channel_id = ChannelId::from_proto(request.channel_id);
2281    let member_id = UserId::from_proto(request.user_id);
2282    db.set_channel_member_admin(channel_id, session.user_id, member_id, request.admin)
2283        .await?;
2284
2285    let (channel, has_accepted) = db
2286        .get_channel(channel_id, member_id)
2287        .await?
2288        .ok_or_else(|| anyhow!("channel not found"))?;
2289
2290    let mut update = proto::UpdateChannels::default();
2291    if has_accepted {
2292        update.channel_permissions.push(proto::ChannelPermission {
2293            channel_id: channel.id.to_proto(),
2294            is_admin: request.admin,
2295        });
2296    }
2297
2298    for connection_id in session
2299        .connection_pool()
2300        .await
2301        .user_connection_ids(member_id)
2302    {
2303        session.peer.send(connection_id, update.clone())?;
2304    }
2305
2306    response.send(proto::Ack {})?;
2307    Ok(())
2308}
2309
2310async fn rename_channel(
2311    request: proto::RenameChannel,
2312    response: Response<proto::RenameChannel>,
2313    session: Session,
2314) -> Result<()> {
2315    let db = session.db().await;
2316    let channel_id = ChannelId::from_proto(request.channel_id);
2317    let new_name = db
2318        .rename_channel(channel_id, session.user_id, &request.name)
2319        .await?;
2320
2321    let channel = proto::Channel {
2322        id: request.channel_id,
2323        name: new_name,
2324        parent_id: None,
2325    };
2326    response.send(proto::ChannelResponse {
2327        channel: Some(channel.clone()),
2328    })?;
2329    let mut update = proto::UpdateChannels::default();
2330    update.channels.push(channel);
2331
2332    let member_ids = db.get_channel_members(channel_id).await?;
2333
2334    let connection_pool = session.connection_pool().await;
2335    for member_id in member_ids {
2336        for connection_id in connection_pool.user_connection_ids(member_id) {
2337            session.peer.send(connection_id, update.clone())?;
2338        }
2339    }
2340
2341    Ok(())
2342}
2343
2344async fn get_channel_members(
2345    request: proto::GetChannelMembers,
2346    response: Response<proto::GetChannelMembers>,
2347    session: Session,
2348) -> Result<()> {
2349    let db = session.db().await;
2350    let channel_id = ChannelId::from_proto(request.channel_id);
2351    let members = db
2352        .get_channel_member_details(channel_id, session.user_id)
2353        .await?;
2354    response.send(proto::GetChannelMembersResponse { members })?;
2355    Ok(())
2356}
2357
2358async fn respond_to_channel_invite(
2359    request: proto::RespondToChannelInvite,
2360    response: Response<proto::RespondToChannelInvite>,
2361    session: Session,
2362) -> Result<()> {
2363    let db = session.db().await;
2364    let channel_id = ChannelId::from_proto(request.channel_id);
2365    db.respond_to_channel_invite(channel_id, session.user_id, request.accept)
2366        .await?;
2367
2368    let mut update = proto::UpdateChannels::default();
2369    update
2370        .remove_channel_invitations
2371        .push(channel_id.to_proto());
2372    if request.accept {
2373        let result = db.get_channels_for_user(session.user_id).await?;
2374        update
2375            .channels
2376            .extend(result.channels.into_iter().map(|channel| proto::Channel {
2377                id: channel.id.to_proto(),
2378                name: channel.name,
2379                parent_id: channel.parent_id.map(ChannelId::to_proto),
2380            }));
2381        update
2382            .channel_participants
2383            .extend(
2384                result
2385                    .channel_participants
2386                    .into_iter()
2387                    .map(|(channel_id, user_ids)| proto::ChannelParticipants {
2388                        channel_id: channel_id.to_proto(),
2389                        participant_user_ids: user_ids.into_iter().map(UserId::to_proto).collect(),
2390                    }),
2391            );
2392        update
2393            .channel_permissions
2394            .extend(
2395                result
2396                    .channels_with_admin_privileges
2397                    .into_iter()
2398                    .map(|channel_id| proto::ChannelPermission {
2399                        channel_id: channel_id.to_proto(),
2400                        is_admin: true,
2401                    }),
2402            );
2403    }
2404    session.peer.send(session.connection_id, update)?;
2405    response.send(proto::Ack {})?;
2406
2407    Ok(())
2408}
2409
2410async fn join_channel(
2411    request: proto::JoinChannel,
2412    response: Response<proto::JoinChannel>,
2413    session: Session,
2414) -> Result<()> {
2415    let channel_id = ChannelId::from_proto(request.channel_id);
2416
2417    let joined_room = {
2418        let db = session.db().await;
2419
2420        let room_id = db.room_id_for_channel(channel_id).await?;
2421
2422        let joined_room = db
2423            .join_room(
2424                room_id,
2425                session.user_id,
2426                Some(channel_id),
2427                session.connection_id,
2428            )
2429            .await?;
2430
2431        let live_kit_connection_info = session.live_kit_client.as_ref().and_then(|live_kit| {
2432            let token = live_kit
2433                .room_token(
2434                    &joined_room.room.live_kit_room,
2435                    &session.user_id.to_string(),
2436                )
2437                .trace_err()?;
2438
2439            Some(LiveKitConnectionInfo {
2440                server_url: live_kit.url().into(),
2441                token,
2442            })
2443        });
2444
2445        response.send(proto::JoinRoomResponse {
2446            room: Some(joined_room.room.clone()),
2447            live_kit_connection_info,
2448        })?;
2449
2450        room_updated(&joined_room.room, &session.peer);
2451
2452        joined_room.clone()
2453    };
2454
2455    channel_updated(
2456        channel_id,
2457        &joined_room.room,
2458        &joined_room.channel_members,
2459        &session.peer,
2460        &*session.connection_pool().await,
2461    );
2462
2463    update_user_contacts(session.user_id, &session).await?;
2464
2465    Ok(())
2466}
2467
2468async fn update_diff_base(request: proto::UpdateDiffBase, session: Session) -> Result<()> {
2469    let project_id = ProjectId::from_proto(request.project_id);
2470    let project_connection_ids = session
2471        .db()
2472        .await
2473        .project_connection_ids(project_id, session.connection_id)
2474        .await?;
2475    broadcast(
2476        Some(session.connection_id),
2477        project_connection_ids.iter().copied(),
2478        |connection_id| {
2479            session
2480                .peer
2481                .forward_send(session.connection_id, connection_id, request.clone())
2482        },
2483    );
2484    Ok(())
2485}
2486
2487async fn get_private_user_info(
2488    _request: proto::GetPrivateUserInfo,
2489    response: Response<proto::GetPrivateUserInfo>,
2490    session: Session,
2491) -> Result<()> {
2492    let metrics_id = session
2493        .db()
2494        .await
2495        .get_user_metrics_id(session.user_id)
2496        .await?;
2497    let user = session
2498        .db()
2499        .await
2500        .get_user_by_id(session.user_id)
2501        .await?
2502        .ok_or_else(|| anyhow!("user not found"))?;
2503    response.send(proto::GetPrivateUserInfoResponse {
2504        metrics_id,
2505        staff: user.admin,
2506    })?;
2507    Ok(())
2508}
2509
2510fn to_axum_message(message: TungsteniteMessage) -> AxumMessage {
2511    match message {
2512        TungsteniteMessage::Text(payload) => AxumMessage::Text(payload),
2513        TungsteniteMessage::Binary(payload) => AxumMessage::Binary(payload),
2514        TungsteniteMessage::Ping(payload) => AxumMessage::Ping(payload),
2515        TungsteniteMessage::Pong(payload) => AxumMessage::Pong(payload),
2516        TungsteniteMessage::Close(frame) => AxumMessage::Close(frame.map(|frame| AxumCloseFrame {
2517            code: frame.code.into(),
2518            reason: frame.reason,
2519        })),
2520    }
2521}
2522
2523fn to_tungstenite_message(message: AxumMessage) -> TungsteniteMessage {
2524    match message {
2525        AxumMessage::Text(payload) => TungsteniteMessage::Text(payload),
2526        AxumMessage::Binary(payload) => TungsteniteMessage::Binary(payload),
2527        AxumMessage::Ping(payload) => TungsteniteMessage::Ping(payload),
2528        AxumMessage::Pong(payload) => TungsteniteMessage::Pong(payload),
2529        AxumMessage::Close(frame) => {
2530            TungsteniteMessage::Close(frame.map(|frame| TungsteniteCloseFrame {
2531                code: frame.code.into(),
2532                reason: frame.reason,
2533            }))
2534        }
2535    }
2536}
2537
2538fn build_initial_channels_update(
2539    channels: ChannelsForUser,
2540    channel_invites: Vec<db::Channel>,
2541) -> proto::UpdateChannels {
2542    let mut update = proto::UpdateChannels::default();
2543
2544    for channel in channels.channels {
2545        update.channels.push(proto::Channel {
2546            id: channel.id.to_proto(),
2547            name: channel.name,
2548            parent_id: channel.parent_id.map(|id| id.to_proto()),
2549        });
2550    }
2551
2552    for (channel_id, participants) in channels.channel_participants {
2553        update
2554            .channel_participants
2555            .push(proto::ChannelParticipants {
2556                channel_id: channel_id.to_proto(),
2557                participant_user_ids: participants.into_iter().map(|id| id.to_proto()).collect(),
2558            });
2559    }
2560
2561    update
2562        .channel_permissions
2563        .extend(
2564            channels
2565                .channels_with_admin_privileges
2566                .into_iter()
2567                .map(|id| proto::ChannelPermission {
2568                    channel_id: id.to_proto(),
2569                    is_admin: true,
2570                }),
2571        );
2572
2573    for channel in channel_invites {
2574        update.channel_invitations.push(proto::Channel {
2575            id: channel.id.to_proto(),
2576            name: channel.name,
2577            parent_id: None,
2578        });
2579    }
2580
2581    update
2582}
2583
2584fn build_initial_contacts_update(
2585    contacts: Vec<db::Contact>,
2586    pool: &ConnectionPool,
2587) -> proto::UpdateContacts {
2588    let mut update = proto::UpdateContacts::default();
2589
2590    for contact in contacts {
2591        match contact {
2592            db::Contact::Accepted {
2593                user_id,
2594                should_notify,
2595                busy,
2596            } => {
2597                update
2598                    .contacts
2599                    .push(contact_for_user(user_id, should_notify, busy, &pool));
2600            }
2601            db::Contact::Outgoing { user_id } => update.outgoing_requests.push(user_id.to_proto()),
2602            db::Contact::Incoming {
2603                user_id,
2604                should_notify,
2605            } => update
2606                .incoming_requests
2607                .push(proto::IncomingContactRequest {
2608                    requester_id: user_id.to_proto(),
2609                    should_notify,
2610                }),
2611        }
2612    }
2613
2614    update
2615}
2616
2617fn contact_for_user(
2618    user_id: UserId,
2619    should_notify: bool,
2620    busy: bool,
2621    pool: &ConnectionPool,
2622) -> proto::Contact {
2623    proto::Contact {
2624        user_id: user_id.to_proto(),
2625        online: pool.is_user_online(user_id),
2626        busy,
2627        should_notify,
2628    }
2629}
2630
2631fn room_updated(room: &proto::Room, peer: &Peer) {
2632    broadcast(
2633        None,
2634        room.participants
2635            .iter()
2636            .filter_map(|participant| Some(participant.peer_id?.into())),
2637        |peer_id| {
2638            peer.send(
2639                peer_id.into(),
2640                proto::RoomUpdated {
2641                    room: Some(room.clone()),
2642                },
2643            )
2644        },
2645    );
2646}
2647
2648fn channel_updated(
2649    channel_id: ChannelId,
2650    room: &proto::Room,
2651    channel_members: &[UserId],
2652    peer: &Peer,
2653    pool: &ConnectionPool,
2654) {
2655    let participants = room
2656        .participants
2657        .iter()
2658        .map(|p| p.user_id)
2659        .collect::<Vec<_>>();
2660
2661    broadcast(
2662        None,
2663        channel_members
2664            .iter()
2665            .flat_map(|user_id| pool.user_connection_ids(*user_id)),
2666        |peer_id| {
2667            peer.send(
2668                peer_id.into(),
2669                proto::UpdateChannels {
2670                    channel_participants: vec![proto::ChannelParticipants {
2671                        channel_id: channel_id.to_proto(),
2672                        participant_user_ids: participants.clone(),
2673                    }],
2674                    ..Default::default()
2675                },
2676            )
2677        },
2678    );
2679}
2680
2681async fn update_user_contacts(user_id: UserId, session: &Session) -> Result<()> {
2682    let db = session.db().await;
2683
2684    let contacts = db.get_contacts(user_id).await?;
2685    let busy = db.is_user_busy(user_id).await?;
2686
2687    let pool = session.connection_pool().await;
2688    let updated_contact = contact_for_user(user_id, false, busy, &pool);
2689    for contact in contacts {
2690        if let db::Contact::Accepted {
2691            user_id: contact_user_id,
2692            ..
2693        } = contact
2694        {
2695            for contact_conn_id in pool.user_connection_ids(contact_user_id) {
2696                session
2697                    .peer
2698                    .send(
2699                        contact_conn_id,
2700                        proto::UpdateContacts {
2701                            contacts: vec![updated_contact.clone()],
2702                            remove_contacts: Default::default(),
2703                            incoming_requests: Default::default(),
2704                            remove_incoming_requests: Default::default(),
2705                            outgoing_requests: Default::default(),
2706                            remove_outgoing_requests: Default::default(),
2707                        },
2708                    )
2709                    .trace_err();
2710            }
2711        }
2712    }
2713    Ok(())
2714}
2715
2716async fn leave_room_for_session(session: &Session) -> Result<()> {
2717    let mut contacts_to_update = HashSet::default();
2718
2719    let room_id;
2720    let canceled_calls_to_user_ids;
2721    let live_kit_room;
2722    let delete_live_kit_room;
2723    let room;
2724    let channel_members;
2725    let channel_id;
2726
2727    if let Some(mut left_room) = session.db().await.leave_room(session.connection_id).await? {
2728        contacts_to_update.insert(session.user_id);
2729
2730        for project in left_room.left_projects.values() {
2731            project_left(project, session);
2732        }
2733
2734        room_id = RoomId::from_proto(left_room.room.id);
2735        canceled_calls_to_user_ids = mem::take(&mut left_room.canceled_calls_to_user_ids);
2736        live_kit_room = mem::take(&mut left_room.room.live_kit_room);
2737        delete_live_kit_room = left_room.deleted;
2738        room = mem::take(&mut left_room.room);
2739        channel_members = mem::take(&mut left_room.channel_members);
2740        channel_id = left_room.channel_id;
2741
2742        room_updated(&room, &session.peer);
2743    } else {
2744        return Ok(());
2745    }
2746
2747    if let Some(channel_id) = channel_id {
2748        channel_updated(
2749            channel_id,
2750            &room,
2751            &channel_members,
2752            &session.peer,
2753            &*session.connection_pool().await,
2754        );
2755    }
2756
2757    {
2758        let pool = session.connection_pool().await;
2759        for canceled_user_id in canceled_calls_to_user_ids {
2760            for connection_id in pool.user_connection_ids(canceled_user_id) {
2761                session
2762                    .peer
2763                    .send(
2764                        connection_id,
2765                        proto::CallCanceled {
2766                            room_id: room_id.to_proto(),
2767                        },
2768                    )
2769                    .trace_err();
2770            }
2771            contacts_to_update.insert(canceled_user_id);
2772        }
2773    }
2774
2775    for contact_user_id in contacts_to_update {
2776        update_user_contacts(contact_user_id, &session).await?;
2777    }
2778
2779    if let Some(live_kit) = session.live_kit_client.as_ref() {
2780        live_kit
2781            .remove_participant(live_kit_room.clone(), session.user_id.to_string())
2782            .await
2783            .trace_err();
2784
2785        if delete_live_kit_room {
2786            live_kit.delete_room(live_kit_room).await.trace_err();
2787        }
2788    }
2789
2790    Ok(())
2791}
2792
2793fn project_left(project: &db::LeftProject, session: &Session) {
2794    for connection_id in &project.connection_ids {
2795        if project.host_user_id == session.user_id {
2796            session
2797                .peer
2798                .send(
2799                    *connection_id,
2800                    proto::UnshareProject {
2801                        project_id: project.id.to_proto(),
2802                    },
2803                )
2804                .trace_err();
2805        } else {
2806            session
2807                .peer
2808                .send(
2809                    *connection_id,
2810                    proto::RemoveProjectCollaborator {
2811                        project_id: project.id.to_proto(),
2812                        peer_id: Some(session.connection_id.into()),
2813                    },
2814                )
2815                .trace_err();
2816        }
2817    }
2818}
2819
2820pub trait ResultExt {
2821    type Ok;
2822
2823    fn trace_err(self) -> Option<Self::Ok>;
2824}
2825
2826impl<T, E> ResultExt for Result<T, E>
2827where
2828    E: std::fmt::Debug,
2829{
2830    type Ok = T;
2831
2832    fn trace_err(self) -> Option<T> {
2833        match self {
2834            Ok(value) => Some(value),
2835            Err(error) => {
2836                tracing::error!("{:?}", error);
2837                None
2838            }
2839        }
2840    }
2841}