1use acp_thread::{
2 AgentConnection, AgentSessionInfo, AgentSessionList, AgentSessionListRequest,
3 AgentSessionListResponse,
4};
5use acp_tools::AcpConnectionRegistry;
6use action_log::ActionLog;
7use agent_client_protocol::{self as acp, Agent as _, ErrorCode};
8use anyhow::anyhow;
9use collections::HashMap;
10use feature_flags::{AcpBetaFeatureFlag, FeatureFlagAppExt as _};
11use futures::AsyncBufReadExt as _;
12use futures::io::BufReader;
13use project::Project;
14use project::agent_server_store::AgentServerCommand;
15use serde::Deserialize;
16use settings::Settings as _;
17use task::ShellBuilder;
18use util::ResultExt as _;
19use util::process::Child;
20
21use std::path::PathBuf;
22use std::process::Stdio;
23use std::{any::Any, cell::RefCell};
24use std::{path::Path, rc::Rc};
25use thiserror::Error;
26
27use anyhow::{Context as _, Result};
28use gpui::{App, AppContext as _, AsyncApp, Entity, SharedString, Task, WeakEntity};
29
30use acp_thread::{AcpThread, AuthRequired, LoadError, TerminalProviderEvent};
31use terminal::TerminalBuilder;
32use terminal::terminal_settings::{AlternateScroll, CursorShape, TerminalSettings};
33
34#[derive(Debug, Error)]
35#[error("Unsupported version")]
36pub struct UnsupportedVersion;
37
38pub struct AcpConnection {
39 server_name: SharedString,
40 telemetry_id: SharedString,
41 connection: Rc<acp::ClientSideConnection>,
42 sessions: Rc<RefCell<HashMap<acp::SessionId, AcpSession>>>,
43 auth_methods: Vec<acp::AuthMethod>,
44 agent_capabilities: acp::AgentCapabilities,
45 default_mode: Option<acp::SessionModeId>,
46 default_model: Option<acp::ModelId>,
47 default_config_options: HashMap<String, String>,
48 root_dir: PathBuf,
49 child: Child,
50 session_list: Option<Rc<AcpSessionList>>,
51 _io_task: Task<Result<(), acp::Error>>,
52 _wait_task: Task<Result<()>>,
53 _stderr_task: Task<Result<()>>,
54}
55
56struct ConfigOptions {
57 config_options: Rc<RefCell<Vec<acp::SessionConfigOption>>>,
58 tx: Rc<RefCell<watch::Sender<()>>>,
59 rx: watch::Receiver<()>,
60}
61
62impl ConfigOptions {
63 fn new(config_options: Rc<RefCell<Vec<acp::SessionConfigOption>>>) -> Self {
64 let (tx, rx) = watch::channel(());
65 Self {
66 config_options,
67 tx: Rc::new(RefCell::new(tx)),
68 rx,
69 }
70 }
71}
72
73pub struct AcpSession {
74 thread: WeakEntity<AcpThread>,
75 suppress_abort_err: bool,
76 models: Option<Rc<RefCell<acp::SessionModelState>>>,
77 session_modes: Option<Rc<RefCell<acp::SessionModeState>>>,
78 config_options: Option<ConfigOptions>,
79}
80
81pub struct AcpSessionList {
82 connection: Rc<acp::ClientSideConnection>,
83 updates_tx: smol::channel::Sender<acp_thread::SessionListUpdate>,
84 updates_rx: smol::channel::Receiver<acp_thread::SessionListUpdate>,
85}
86
87impl AcpSessionList {
88 fn new(connection: Rc<acp::ClientSideConnection>) -> Self {
89 let (tx, rx) = smol::channel::unbounded();
90 Self {
91 connection,
92 updates_tx: tx,
93 updates_rx: rx,
94 }
95 }
96
97 fn notify_update(&self) {
98 self.updates_tx
99 .try_send(acp_thread::SessionListUpdate::Refresh)
100 .log_err();
101 }
102
103 fn send_info_update(&self, session_id: acp::SessionId, update: acp::SessionInfoUpdate) {
104 self.updates_tx
105 .try_send(acp_thread::SessionListUpdate::SessionInfo { session_id, update })
106 .log_err();
107 }
108}
109
110impl AgentSessionList for AcpSessionList {
111 fn list_sessions(
112 &self,
113 request: AgentSessionListRequest,
114 cx: &mut App,
115 ) -> Task<Result<AgentSessionListResponse>> {
116 let conn = self.connection.clone();
117 cx.foreground_executor().spawn(async move {
118 let acp_request = acp::ListSessionsRequest::new()
119 .cwd(request.cwd)
120 .cursor(request.cursor);
121 let response = conn.list_sessions(acp_request).await?;
122 Ok(AgentSessionListResponse {
123 sessions: response
124 .sessions
125 .into_iter()
126 .map(|s| AgentSessionInfo {
127 session_id: s.session_id,
128 cwd: Some(s.cwd),
129 title: s.title.map(Into::into),
130 updated_at: s.updated_at.and_then(|date_str| {
131 chrono::DateTime::parse_from_rfc3339(&date_str)
132 .ok()
133 .map(|dt| dt.with_timezone(&chrono::Utc))
134 }),
135 meta: s.meta,
136 })
137 .collect(),
138 next_cursor: response.next_cursor,
139 meta: response.meta,
140 })
141 })
142 }
143
144 fn watch(
145 &self,
146 _cx: &mut App,
147 ) -> Option<smol::channel::Receiver<acp_thread::SessionListUpdate>> {
148 Some(self.updates_rx.clone())
149 }
150
151 fn into_any(self: Rc<Self>) -> Rc<dyn Any> {
152 self
153 }
154}
155
156pub async fn connect(
157 server_name: SharedString,
158 command: AgentServerCommand,
159 root_dir: &Path,
160 default_mode: Option<acp::SessionModeId>,
161 default_model: Option<acp::ModelId>,
162 default_config_options: HashMap<String, String>,
163 is_remote: bool,
164 cx: &mut AsyncApp,
165) -> Result<Rc<dyn AgentConnection>> {
166 let conn = AcpConnection::stdio(
167 server_name,
168 command.clone(),
169 root_dir,
170 default_mode,
171 default_model,
172 default_config_options,
173 is_remote,
174 cx,
175 )
176 .await?;
177 Ok(Rc::new(conn) as _)
178}
179
180const MINIMUM_SUPPORTED_VERSION: acp::ProtocolVersion = acp::ProtocolVersion::V1;
181
182impl AcpConnection {
183 pub async fn stdio(
184 server_name: SharedString,
185 command: AgentServerCommand,
186 root_dir: &Path,
187 default_mode: Option<acp::SessionModeId>,
188 default_model: Option<acp::ModelId>,
189 default_config_options: HashMap<String, String>,
190 is_remote: bool,
191 cx: &mut AsyncApp,
192 ) -> Result<Self> {
193 let shell = cx.update(|cx| TerminalSettings::get(None, cx).shell.clone());
194 let builder = ShellBuilder::new(&shell, cfg!(windows)).non_interactive();
195 let mut child =
196 builder.build_std_command(Some(command.path.display().to_string()), &command.args);
197 child.envs(command.env.iter().flatten());
198 if !is_remote {
199 child.current_dir(root_dir);
200 }
201 let mut child = Child::spawn(child, Stdio::piped(), Stdio::piped(), Stdio::piped())?;
202
203 let stdout = child.stdout.take().context("Failed to take stdout")?;
204 let stdin = child.stdin.take().context("Failed to take stdin")?;
205 let stderr = child.stderr.take().context("Failed to take stderr")?;
206 log::debug!(
207 "Spawning external agent server: {:?}, {:?}",
208 command.path,
209 command.args
210 );
211 log::trace!("Spawned (pid: {})", child.id());
212
213 let sessions = Rc::new(RefCell::new(HashMap::default()));
214
215 let (release_channel, version): (Option<&str>, String) = cx.update(|cx| {
216 (
217 release_channel::ReleaseChannel::try_global(cx)
218 .map(|release_channel| release_channel.display_name()),
219 release_channel::AppVersion::global(cx).to_string(),
220 )
221 });
222
223 let client_session_list: Rc<RefCell<Option<Rc<AcpSessionList>>>> =
224 Rc::new(RefCell::new(None));
225
226 let client = ClientDelegate {
227 sessions: sessions.clone(),
228 session_list: client_session_list.clone(),
229 cx: cx.clone(),
230 };
231 let (connection, io_task) = acp::ClientSideConnection::new(client, stdin, stdout, {
232 let foreground_executor = cx.foreground_executor().clone();
233 move |fut| {
234 foreground_executor.spawn(fut).detach();
235 }
236 });
237
238 let io_task = cx.background_spawn(io_task);
239
240 let stderr_task = cx.background_spawn(async move {
241 let mut stderr = BufReader::new(stderr);
242 let mut line = String::new();
243 while let Ok(n) = stderr.read_line(&mut line).await
244 && n > 0
245 {
246 log::warn!("agent stderr: {}", line.trim());
247 line.clear();
248 }
249 Ok(())
250 });
251
252 let wait_task = cx.spawn({
253 let sessions = sessions.clone();
254 let status_fut = child.status();
255 async move |cx| {
256 let status = status_fut.await?;
257
258 for session in sessions.borrow().values() {
259 session
260 .thread
261 .update(cx, |thread, cx| {
262 thread.emit_load_error(LoadError::Exited { status }, cx)
263 })
264 .ok();
265 }
266
267 anyhow::Ok(())
268 }
269 });
270
271 let connection = Rc::new(connection);
272
273 cx.update(|cx| {
274 AcpConnectionRegistry::default_global(cx).update(cx, |registry, cx| {
275 registry.set_active_connection(server_name.clone(), &connection, cx)
276 });
277 });
278
279 let response = connection
280 .initialize(
281 acp::InitializeRequest::new(acp::ProtocolVersion::V1)
282 .client_capabilities(
283 acp::ClientCapabilities::new()
284 .fs(acp::FileSystemCapability::new()
285 .read_text_file(true)
286 .write_text_file(true))
287 .terminal(true)
288 // Experimental: Allow for rendering terminal output from the agents
289 .meta(acp::Meta::from_iter([
290 ("terminal_output".into(), true.into()),
291 ("terminal-auth".into(), true.into()),
292 ])),
293 )
294 .client_info(
295 acp::Implementation::new("zed", version)
296 .title(release_channel.map(ToOwned::to_owned)),
297 ),
298 )
299 .await?;
300
301 if response.protocol_version < MINIMUM_SUPPORTED_VERSION {
302 return Err(UnsupportedVersion.into());
303 }
304
305 let telemetry_id = response
306 .agent_info
307 // Use the one the agent provides if we have one
308 .map(|info| info.name.into())
309 // Otherwise, just use the name
310 .unwrap_or_else(|| server_name.clone());
311
312 let session_list = if response
313 .agent_capabilities
314 .session_capabilities
315 .list
316 .is_some()
317 {
318 let list = Rc::new(AcpSessionList::new(connection.clone()));
319 *client_session_list.borrow_mut() = Some(list.clone());
320 Some(list)
321 } else {
322 None
323 };
324
325 Ok(Self {
326 auth_methods: response.auth_methods,
327 root_dir: root_dir.to_owned(),
328 connection,
329 server_name,
330 telemetry_id,
331 sessions,
332 agent_capabilities: response.agent_capabilities,
333 default_mode,
334 default_model,
335 default_config_options,
336 session_list,
337 _io_task: io_task,
338 _wait_task: wait_task,
339 _stderr_task: stderr_task,
340 child,
341 })
342 }
343
344 pub fn prompt_capabilities(&self) -> &acp::PromptCapabilities {
345 &self.agent_capabilities.prompt_capabilities
346 }
347
348 pub fn root_dir(&self) -> &Path {
349 &self.root_dir
350 }
351}
352
353impl Drop for AcpConnection {
354 fn drop(&mut self) {
355 self.child.kill().log_err();
356 }
357}
358
359impl AgentConnection for AcpConnection {
360 fn telemetry_id(&self) -> SharedString {
361 self.telemetry_id.clone()
362 }
363
364 fn new_thread(
365 self: Rc<Self>,
366 project: Entity<Project>,
367 cwd: &Path,
368 cx: &mut App,
369 ) -> Task<Result<Entity<AcpThread>>> {
370 let name = self.server_name.clone();
371 let cwd = cwd.to_path_buf();
372 let mcp_servers = mcp_servers_for_project(&project, cx);
373
374 cx.spawn(async move |cx| {
375 let response = self.connection
376 .new_session(acp::NewSessionRequest::new(cwd).mcp_servers(mcp_servers))
377 .await
378 .map_err(map_acp_error)?;
379
380 let (modes, models, config_options) = cx.update(|cx| {
381 config_state(cx, response.modes, response.models, response.config_options)
382 });
383
384 if let Some(default_mode) = self.default_mode.clone() {
385 if let Some(modes) = modes.as_ref() {
386 let mut modes_ref = modes.borrow_mut();
387 let has_mode = modes_ref.available_modes.iter().any(|mode| mode.id == default_mode);
388
389 if has_mode {
390 let initial_mode_id = modes_ref.current_mode_id.clone();
391
392 cx.spawn({
393 let default_mode = default_mode.clone();
394 let session_id = response.session_id.clone();
395 let modes = modes.clone();
396 let conn = self.connection.clone();
397 async move |_| {
398 let result = conn.set_session_mode(acp::SetSessionModeRequest::new(session_id, default_mode))
399 .await.log_err();
400
401 if result.is_none() {
402 modes.borrow_mut().current_mode_id = initial_mode_id;
403 }
404 }
405 }).detach();
406
407 modes_ref.current_mode_id = default_mode;
408 } else {
409 let available_modes = modes_ref
410 .available_modes
411 .iter()
412 .map(|mode| format!("- `{}`: {}", mode.id, mode.name))
413 .collect::<Vec<_>>()
414 .join("\n");
415
416 log::warn!(
417 "`{default_mode}` is not valid {name} mode. Available options:\n{available_modes}",
418 );
419 }
420 } else {
421 log::warn!(
422 "`{name}` does not support modes, but `default_mode` was set in settings.",
423 );
424 }
425 }
426
427 if let Some(default_model) = self.default_model.clone() {
428 if let Some(models) = models.as_ref() {
429 let mut models_ref = models.borrow_mut();
430 let has_model = models_ref.available_models.iter().any(|model| model.model_id == default_model);
431
432 if has_model {
433 let initial_model_id = models_ref.current_model_id.clone();
434
435 cx.spawn({
436 let default_model = default_model.clone();
437 let session_id = response.session_id.clone();
438 let models = models.clone();
439 let conn = self.connection.clone();
440 async move |_| {
441 let result = conn.set_session_model(acp::SetSessionModelRequest::new(session_id, default_model))
442 .await.log_err();
443
444 if result.is_none() {
445 models.borrow_mut().current_model_id = initial_model_id;
446 }
447 }
448 }).detach();
449
450 models_ref.current_model_id = default_model;
451 } else {
452 let available_models = models_ref
453 .available_models
454 .iter()
455 .map(|model| format!("- `{}`: {}", model.model_id, model.name))
456 .collect::<Vec<_>>()
457 .join("\n");
458
459 log::warn!(
460 "`{default_model}` is not a valid {name} model. Available options:\n{available_models}",
461 );
462 }
463 } else {
464 log::warn!(
465 "`{name}` does not support model selection, but `default_model` was set in settings.",
466 );
467 }
468 }
469
470 if let Some(config_opts) = config_options.as_ref() {
471 let defaults_to_apply: Vec<_> = {
472 let config_opts_ref = config_opts.borrow();
473 config_opts_ref
474 .iter()
475 .filter_map(|config_option| {
476 let default_value = self.default_config_options.get(&*config_option.id.0)?;
477
478 let is_valid = match &config_option.kind {
479 acp::SessionConfigKind::Select(select) => match &select.options {
480 acp::SessionConfigSelectOptions::Ungrouped(options) => {
481 options.iter().any(|opt| &*opt.value.0 == default_value.as_str())
482 }
483 acp::SessionConfigSelectOptions::Grouped(groups) => groups
484 .iter()
485 .any(|g| g.options.iter().any(|opt| &*opt.value.0 == default_value.as_str())),
486 _ => false,
487 },
488 _ => false,
489 };
490
491 if is_valid {
492 let initial_value = match &config_option.kind {
493 acp::SessionConfigKind::Select(select) => {
494 Some(select.current_value.clone())
495 }
496 _ => None,
497 };
498 Some((config_option.id.clone(), default_value.clone(), initial_value))
499 } else {
500 log::warn!(
501 "`{}` is not a valid value for config option `{}` in {}",
502 default_value,
503 config_option.id.0,
504 name
505 );
506 None
507 }
508 })
509 .collect()
510 };
511
512 for (config_id, default_value, initial_value) in defaults_to_apply {
513 cx.spawn({
514 let default_value_id = acp::SessionConfigValueId::new(default_value.clone());
515 let session_id = response.session_id.clone();
516 let config_id_clone = config_id.clone();
517 let config_opts = config_opts.clone();
518 let conn = self.connection.clone();
519 async move |_| {
520 let result = conn
521 .set_session_config_option(
522 acp::SetSessionConfigOptionRequest::new(
523 session_id,
524 config_id_clone.clone(),
525 default_value_id,
526 ),
527 )
528 .await
529 .log_err();
530
531 if result.is_none() {
532 if let Some(initial) = initial_value {
533 let mut opts = config_opts.borrow_mut();
534 if let Some(opt) = opts.iter_mut().find(|o| o.id == config_id_clone) {
535 if let acp::SessionConfigKind::Select(select) =
536 &mut opt.kind
537 {
538 select.current_value = initial;
539 }
540 }
541 }
542 }
543 }
544 })
545 .detach();
546
547 let mut opts = config_opts.borrow_mut();
548 if let Some(opt) = opts.iter_mut().find(|o| o.id == config_id) {
549 if let acp::SessionConfigKind::Select(select) = &mut opt.kind {
550 select.current_value = acp::SessionConfigValueId::new(default_value);
551 }
552 }
553 }
554 }
555
556 let action_log = cx.new(|_| ActionLog::new(project.clone()));
557 let thread: Entity<AcpThread> = cx.new(|cx| {
558 AcpThread::new(
559 self.server_name.clone(),
560 self.clone(),
561 project,
562 action_log,
563 response.session_id.clone(),
564 // ACP doesn't currently support per-session prompt capabilities or changing capabilities dynamically.
565 watch::Receiver::constant(self.agent_capabilities.prompt_capabilities.clone()),
566 cx,
567 )
568 });
569
570 self.sessions.borrow_mut().insert(
571 response.session_id,
572 AcpSession {
573 thread: thread.downgrade(),
574 suppress_abort_err: false,
575 session_modes: modes,
576 models,
577 config_options: config_options.map(ConfigOptions::new),
578 },
579 );
580
581 if let Some(session_list) = &self.session_list {
582 session_list.notify_update();
583 }
584
585 Ok(thread)
586 })
587 }
588
589 fn supports_load_session(&self, cx: &App) -> bool {
590 cx.has_flag::<AcpBetaFeatureFlag>() && self.agent_capabilities.load_session
591 }
592
593 fn load_session(
594 self: Rc<Self>,
595 session: AgentSessionInfo,
596 project: Entity<Project>,
597 cwd: &Path,
598 cx: &mut App,
599 ) -> Task<Result<Entity<AcpThread>>> {
600 if !cx.has_flag::<AcpBetaFeatureFlag>() || !self.agent_capabilities.load_session {
601 return Task::ready(Err(anyhow!(LoadError::Other(
602 "Loading sessions is not supported by this agent.".into()
603 ))));
604 }
605
606 let cwd = cwd.to_path_buf();
607 let mcp_servers = mcp_servers_for_project(&project, cx);
608 let action_log = cx.new(|_| ActionLog::new(project.clone()));
609 let thread: Entity<AcpThread> = cx.new(|cx| {
610 AcpThread::new(
611 self.server_name.clone(),
612 self.clone(),
613 project,
614 action_log,
615 session.session_id.clone(),
616 watch::Receiver::constant(self.agent_capabilities.prompt_capabilities.clone()),
617 cx,
618 )
619 });
620
621 self.sessions.borrow_mut().insert(
622 session.session_id.clone(),
623 AcpSession {
624 thread: thread.downgrade(),
625 suppress_abort_err: false,
626 session_modes: None,
627 models: None,
628 config_options: None,
629 },
630 );
631
632 cx.spawn(async move |cx| {
633 let response = match self
634 .connection
635 .load_session(
636 acp::LoadSessionRequest::new(session.session_id.clone(), cwd)
637 .mcp_servers(mcp_servers),
638 )
639 .await
640 {
641 Ok(response) => response,
642 Err(err) => {
643 self.sessions.borrow_mut().remove(&session.session_id);
644 return Err(map_acp_error(err));
645 }
646 };
647
648 let (modes, models, config_options) = cx.update(|cx| {
649 config_state(cx, response.modes, response.models, response.config_options)
650 });
651 if let Some(session) = self.sessions.borrow_mut().get_mut(&session.session_id) {
652 session.session_modes = modes;
653 session.models = models;
654 session.config_options = config_options.map(ConfigOptions::new);
655 }
656
657 if let Some(session_list) = &self.session_list {
658 session_list.notify_update();
659 }
660
661 Ok(thread)
662 })
663 }
664
665 fn auth_methods(&self) -> &[acp::AuthMethod] {
666 &self.auth_methods
667 }
668
669 fn authenticate(&self, method_id: acp::AuthMethodId, cx: &mut App) -> Task<Result<()>> {
670 let conn = self.connection.clone();
671 cx.foreground_executor().spawn(async move {
672 conn.authenticate(acp::AuthenticateRequest::new(method_id))
673 .await?;
674 Ok(())
675 })
676 }
677
678 fn prompt(
679 &self,
680 _id: Option<acp_thread::UserMessageId>,
681 params: acp::PromptRequest,
682 cx: &mut App,
683 ) -> Task<Result<acp::PromptResponse>> {
684 let conn = self.connection.clone();
685 let sessions = self.sessions.clone();
686 let session_id = params.session_id.clone();
687 cx.foreground_executor().spawn(async move {
688 let result = conn.prompt(params).await;
689
690 let mut suppress_abort_err = false;
691
692 if let Some(session) = sessions.borrow_mut().get_mut(&session_id) {
693 suppress_abort_err = session.suppress_abort_err;
694 session.suppress_abort_err = false;
695 }
696
697 match result {
698 Ok(response) => Ok(response),
699 Err(err) => {
700 if err.code == acp::ErrorCode::AuthRequired {
701 return Err(anyhow!(acp::Error::auth_required()));
702 }
703
704 if err.code != ErrorCode::InternalError {
705 anyhow::bail!(err)
706 }
707
708 let Some(data) = &err.data else {
709 anyhow::bail!(err)
710 };
711
712 // Temporary workaround until the following PR is generally available:
713 // https://github.com/google-gemini/gemini-cli/pull/6656
714
715 #[derive(Deserialize)]
716 #[serde(deny_unknown_fields)]
717 struct ErrorDetails {
718 details: Box<str>,
719 }
720
721 match serde_json::from_value(data.clone()) {
722 Ok(ErrorDetails { details }) => {
723 if suppress_abort_err
724 && (details.contains("This operation was aborted")
725 || details.contains("The user aborted a request"))
726 {
727 Ok(acp::PromptResponse::new(acp::StopReason::Cancelled))
728 } else {
729 Err(anyhow!(details))
730 }
731 }
732 Err(_) => Err(anyhow!(err)),
733 }
734 }
735 }
736 })
737 }
738
739 fn cancel(&self, session_id: &acp::SessionId, cx: &mut App) {
740 if let Some(session) = self.sessions.borrow_mut().get_mut(session_id) {
741 session.suppress_abort_err = true;
742 }
743 let conn = self.connection.clone();
744 let params = acp::CancelNotification::new(session_id.clone());
745 cx.foreground_executor()
746 .spawn(async move { conn.cancel(params).await })
747 .detach();
748 }
749
750 fn session_modes(
751 &self,
752 session_id: &acp::SessionId,
753 _cx: &App,
754 ) -> Option<Rc<dyn acp_thread::AgentSessionModes>> {
755 let sessions = self.sessions.clone();
756 let sessions_ref = sessions.borrow();
757 let Some(session) = sessions_ref.get(session_id) else {
758 return None;
759 };
760
761 if let Some(modes) = session.session_modes.as_ref() {
762 Some(Rc::new(AcpSessionModes {
763 connection: self.connection.clone(),
764 session_id: session_id.clone(),
765 state: modes.clone(),
766 }) as _)
767 } else {
768 None
769 }
770 }
771
772 fn model_selector(
773 &self,
774 session_id: &acp::SessionId,
775 ) -> Option<Rc<dyn acp_thread::AgentModelSelector>> {
776 let sessions = self.sessions.clone();
777 let sessions_ref = sessions.borrow();
778 let Some(session) = sessions_ref.get(session_id) else {
779 return None;
780 };
781
782 if let Some(models) = session.models.as_ref() {
783 Some(Rc::new(AcpModelSelector::new(
784 session_id.clone(),
785 self.connection.clone(),
786 models.clone(),
787 )) as _)
788 } else {
789 None
790 }
791 }
792
793 fn session_config_options(
794 &self,
795 session_id: &acp::SessionId,
796 _cx: &App,
797 ) -> Option<Rc<dyn acp_thread::AgentSessionConfigOptions>> {
798 let sessions = self.sessions.borrow();
799 let session = sessions.get(session_id)?;
800
801 let config_opts = session.config_options.as_ref()?;
802
803 Some(Rc::new(AcpSessionConfigOptions {
804 session_id: session_id.clone(),
805 connection: self.connection.clone(),
806 state: config_opts.config_options.clone(),
807 watch_tx: config_opts.tx.clone(),
808 watch_rx: config_opts.rx.clone(),
809 }) as _)
810 }
811
812 fn session_list(&self, cx: &mut App) -> Option<Rc<dyn AgentSessionList>> {
813 if cx.has_flag::<AcpBetaFeatureFlag>() {
814 self.session_list.clone().map(|s| s as _)
815 } else {
816 None
817 }
818 }
819
820 fn into_any(self: Rc<Self>) -> Rc<dyn Any> {
821 self
822 }
823}
824
825fn map_acp_error(err: acp::Error) -> anyhow::Error {
826 if err.code == acp::ErrorCode::AuthRequired {
827 let mut error = AuthRequired::new();
828
829 if err.message != acp::ErrorCode::AuthRequired.to_string() {
830 error = error.with_description(err.message);
831 }
832
833 anyhow!(error)
834 } else {
835 anyhow!(err)
836 }
837}
838
839fn mcp_servers_for_project(project: &Entity<Project>, cx: &App) -> Vec<acp::McpServer> {
840 let context_server_store = project.read(cx).context_server_store().read(cx);
841 let is_local = project.read(cx).is_local();
842 context_server_store
843 .configured_server_ids()
844 .iter()
845 .filter_map(|id| {
846 let configuration = context_server_store.configuration_for_server(id)?;
847 match &*configuration {
848 project::context_server_store::ContextServerConfiguration::Custom {
849 command,
850 remote,
851 ..
852 }
853 | project::context_server_store::ContextServerConfiguration::Extension {
854 command,
855 remote,
856 ..
857 } if is_local || *remote => Some(acp::McpServer::Stdio(
858 acp::McpServerStdio::new(id.0.to_string(), &command.path)
859 .args(command.args.clone())
860 .env(if let Some(env) = command.env.as_ref() {
861 env.iter()
862 .map(|(name, value)| acp::EnvVariable::new(name, value))
863 .collect()
864 } else {
865 vec![]
866 }),
867 )),
868 project::context_server_store::ContextServerConfiguration::Http {
869 url,
870 headers,
871 timeout: _,
872 } => Some(acp::McpServer::Http(
873 acp::McpServerHttp::new(id.0.to_string(), url.to_string()).headers(
874 headers
875 .iter()
876 .map(|(name, value)| acp::HttpHeader::new(name, value))
877 .collect(),
878 ),
879 )),
880 _ => None,
881 }
882 })
883 .collect()
884}
885
886fn config_state(
887 cx: &App,
888 modes: Option<acp::SessionModeState>,
889 models: Option<acp::SessionModelState>,
890 config_options: Option<Vec<acp::SessionConfigOption>>,
891) -> (
892 Option<Rc<RefCell<acp::SessionModeState>>>,
893 Option<Rc<RefCell<acp::SessionModelState>>>,
894 Option<Rc<RefCell<Vec<acp::SessionConfigOption>>>>,
895) {
896 if cx.has_flag::<AcpBetaFeatureFlag>()
897 && let Some(opts) = config_options
898 {
899 return (None, None, Some(Rc::new(RefCell::new(opts))));
900 }
901
902 let modes = modes.map(|modes| Rc::new(RefCell::new(modes)));
903 let models = models.map(|models| Rc::new(RefCell::new(models)));
904 (modes, models, None)
905}
906
907struct AcpSessionModes {
908 session_id: acp::SessionId,
909 connection: Rc<acp::ClientSideConnection>,
910 state: Rc<RefCell<acp::SessionModeState>>,
911}
912
913impl acp_thread::AgentSessionModes for AcpSessionModes {
914 fn current_mode(&self) -> acp::SessionModeId {
915 self.state.borrow().current_mode_id.clone()
916 }
917
918 fn all_modes(&self) -> Vec<acp::SessionMode> {
919 self.state.borrow().available_modes.clone()
920 }
921
922 fn set_mode(&self, mode_id: acp::SessionModeId, cx: &mut App) -> Task<Result<()>> {
923 let connection = self.connection.clone();
924 let session_id = self.session_id.clone();
925 let old_mode_id;
926 {
927 let mut state = self.state.borrow_mut();
928 old_mode_id = state.current_mode_id.clone();
929 state.current_mode_id = mode_id.clone();
930 };
931 let state = self.state.clone();
932 cx.foreground_executor().spawn(async move {
933 let result = connection
934 .set_session_mode(acp::SetSessionModeRequest::new(session_id, mode_id))
935 .await;
936
937 if result.is_err() {
938 state.borrow_mut().current_mode_id = old_mode_id;
939 }
940
941 result?;
942
943 Ok(())
944 })
945 }
946}
947
948struct AcpModelSelector {
949 session_id: acp::SessionId,
950 connection: Rc<acp::ClientSideConnection>,
951 state: Rc<RefCell<acp::SessionModelState>>,
952}
953
954impl AcpModelSelector {
955 fn new(
956 session_id: acp::SessionId,
957 connection: Rc<acp::ClientSideConnection>,
958 state: Rc<RefCell<acp::SessionModelState>>,
959 ) -> Self {
960 Self {
961 session_id,
962 connection,
963 state,
964 }
965 }
966}
967
968impl acp_thread::AgentModelSelector for AcpModelSelector {
969 fn list_models(&self, _cx: &mut App) -> Task<Result<acp_thread::AgentModelList>> {
970 Task::ready(Ok(acp_thread::AgentModelList::Flat(
971 self.state
972 .borrow()
973 .available_models
974 .clone()
975 .into_iter()
976 .map(acp_thread::AgentModelInfo::from)
977 .collect(),
978 )))
979 }
980
981 fn select_model(&self, model_id: acp::ModelId, cx: &mut App) -> Task<Result<()>> {
982 let connection = self.connection.clone();
983 let session_id = self.session_id.clone();
984 let old_model_id;
985 {
986 let mut state = self.state.borrow_mut();
987 old_model_id = state.current_model_id.clone();
988 state.current_model_id = model_id.clone();
989 };
990 let state = self.state.clone();
991 cx.foreground_executor().spawn(async move {
992 let result = connection
993 .set_session_model(acp::SetSessionModelRequest::new(session_id, model_id))
994 .await;
995
996 if result.is_err() {
997 state.borrow_mut().current_model_id = old_model_id;
998 }
999
1000 result?;
1001
1002 Ok(())
1003 })
1004 }
1005
1006 fn selected_model(&self, _cx: &mut App) -> Task<Result<acp_thread::AgentModelInfo>> {
1007 let state = self.state.borrow();
1008 Task::ready(
1009 state
1010 .available_models
1011 .iter()
1012 .find(|m| m.model_id == state.current_model_id)
1013 .cloned()
1014 .map(acp_thread::AgentModelInfo::from)
1015 .ok_or_else(|| anyhow::anyhow!("Model not found")),
1016 )
1017 }
1018}
1019
1020struct AcpSessionConfigOptions {
1021 session_id: acp::SessionId,
1022 connection: Rc<acp::ClientSideConnection>,
1023 state: Rc<RefCell<Vec<acp::SessionConfigOption>>>,
1024 watch_tx: Rc<RefCell<watch::Sender<()>>>,
1025 watch_rx: watch::Receiver<()>,
1026}
1027
1028impl acp_thread::AgentSessionConfigOptions for AcpSessionConfigOptions {
1029 fn config_options(&self) -> Vec<acp::SessionConfigOption> {
1030 self.state.borrow().clone()
1031 }
1032
1033 fn set_config_option(
1034 &self,
1035 config_id: acp::SessionConfigId,
1036 value: acp::SessionConfigValueId,
1037 cx: &mut App,
1038 ) -> Task<Result<Vec<acp::SessionConfigOption>>> {
1039 let connection = self.connection.clone();
1040 let session_id = self.session_id.clone();
1041 let state = self.state.clone();
1042
1043 let watch_tx = self.watch_tx.clone();
1044
1045 cx.foreground_executor().spawn(async move {
1046 let response = connection
1047 .set_session_config_option(acp::SetSessionConfigOptionRequest::new(
1048 session_id, config_id, value,
1049 ))
1050 .await?;
1051
1052 *state.borrow_mut() = response.config_options.clone();
1053 watch_tx.borrow_mut().send(()).ok();
1054 Ok(response.config_options)
1055 })
1056 }
1057
1058 fn watch(&self, _cx: &mut App) -> Option<watch::Receiver<()>> {
1059 Some(self.watch_rx.clone())
1060 }
1061}
1062
1063struct ClientDelegate {
1064 sessions: Rc<RefCell<HashMap<acp::SessionId, AcpSession>>>,
1065 session_list: Rc<RefCell<Option<Rc<AcpSessionList>>>>,
1066 cx: AsyncApp,
1067}
1068
1069#[async_trait::async_trait(?Send)]
1070impl acp::Client for ClientDelegate {
1071 async fn request_permission(
1072 &self,
1073 arguments: acp::RequestPermissionRequest,
1074 ) -> Result<acp::RequestPermissionResponse, acp::Error> {
1075 let respect_always_allow_setting;
1076 let thread;
1077 {
1078 let sessions_ref = self.sessions.borrow();
1079 let session = sessions_ref
1080 .get(&arguments.session_id)
1081 .context("Failed to get session")?;
1082 respect_always_allow_setting = session.session_modes.is_none();
1083 thread = session.thread.clone();
1084 }
1085
1086 let cx = &mut self.cx.clone();
1087
1088 let task = thread.update(cx, |thread, cx| {
1089 thread.request_tool_call_authorization(
1090 arguments.tool_call,
1091 acp_thread::PermissionOptions::Flat(arguments.options),
1092 respect_always_allow_setting,
1093 cx,
1094 )
1095 })??;
1096
1097 let outcome = task.await;
1098
1099 Ok(acp::RequestPermissionResponse::new(outcome))
1100 }
1101
1102 async fn write_text_file(
1103 &self,
1104 arguments: acp::WriteTextFileRequest,
1105 ) -> Result<acp::WriteTextFileResponse, acp::Error> {
1106 let cx = &mut self.cx.clone();
1107 let task = self
1108 .session_thread(&arguments.session_id)?
1109 .update(cx, |thread, cx| {
1110 thread.write_text_file(arguments.path, arguments.content, cx)
1111 })?;
1112
1113 task.await?;
1114
1115 Ok(Default::default())
1116 }
1117
1118 async fn read_text_file(
1119 &self,
1120 arguments: acp::ReadTextFileRequest,
1121 ) -> Result<acp::ReadTextFileResponse, acp::Error> {
1122 let task = self.session_thread(&arguments.session_id)?.update(
1123 &mut self.cx.clone(),
1124 |thread, cx| {
1125 thread.read_text_file(arguments.path, arguments.line, arguments.limit, false, cx)
1126 },
1127 )?;
1128
1129 let content = task.await?;
1130
1131 Ok(acp::ReadTextFileResponse::new(content))
1132 }
1133
1134 async fn session_notification(
1135 &self,
1136 notification: acp::SessionNotification,
1137 ) -> Result<(), acp::Error> {
1138 let sessions = self.sessions.borrow();
1139 let session = sessions
1140 .get(¬ification.session_id)
1141 .context("Failed to get session")?;
1142
1143 if let acp::SessionUpdate::CurrentModeUpdate(acp::CurrentModeUpdate {
1144 current_mode_id,
1145 ..
1146 }) = ¬ification.update
1147 {
1148 if let Some(session_modes) = &session.session_modes {
1149 session_modes.borrow_mut().current_mode_id = current_mode_id.clone();
1150 } else {
1151 log::error!(
1152 "Got a `CurrentModeUpdate` notification, but they agent didn't specify `modes` during setting setup."
1153 );
1154 }
1155 }
1156
1157 if let acp::SessionUpdate::ConfigOptionUpdate(acp::ConfigOptionUpdate {
1158 config_options,
1159 ..
1160 }) = ¬ification.update
1161 {
1162 if let Some(opts) = &session.config_options {
1163 *opts.config_options.borrow_mut() = config_options.clone();
1164 opts.tx.borrow_mut().send(()).ok();
1165 } else {
1166 log::error!(
1167 "Got a `ConfigOptionUpdate` notification, but the agent didn't specify `config_options` during session setup."
1168 );
1169 }
1170 }
1171
1172 if let acp::SessionUpdate::SessionInfoUpdate(info_update) = ¬ification.update
1173 && let Some(session_list) = self.session_list.borrow().as_ref()
1174 {
1175 session_list.send_info_update(notification.session_id.clone(), info_update.clone());
1176 }
1177
1178 // Clone so we can inspect meta both before and after handing off to the thread
1179 let update_clone = notification.update.clone();
1180
1181 // Pre-handle: if a ToolCall carries terminal_info, create/register a display-only terminal.
1182 if let acp::SessionUpdate::ToolCall(tc) = &update_clone {
1183 if let Some(meta) = &tc.meta {
1184 if let Some(terminal_info) = meta.get("terminal_info") {
1185 if let Some(id_str) = terminal_info.get("terminal_id").and_then(|v| v.as_str())
1186 {
1187 let terminal_id = acp::TerminalId::new(id_str);
1188 let cwd = terminal_info
1189 .get("cwd")
1190 .and_then(|v| v.as_str().map(PathBuf::from));
1191
1192 // Create a minimal display-only lower-level terminal and register it.
1193 let _ = session.thread.update(&mut self.cx.clone(), |thread, cx| {
1194 let builder = TerminalBuilder::new_display_only(
1195 CursorShape::default(),
1196 AlternateScroll::On,
1197 None,
1198 0,
1199 )?;
1200 let lower = cx.new(|cx| builder.subscribe(cx));
1201 thread.on_terminal_provider_event(
1202 TerminalProviderEvent::Created {
1203 terminal_id,
1204 label: tc.title.clone(),
1205 cwd,
1206 output_byte_limit: None,
1207 terminal: lower,
1208 },
1209 cx,
1210 );
1211 anyhow::Ok(())
1212 });
1213 }
1214 }
1215 }
1216 }
1217
1218 // Forward the update to the acp_thread as usual.
1219 session.thread.update(&mut self.cx.clone(), |thread, cx| {
1220 thread.handle_session_update(notification.update.clone(), cx)
1221 })??;
1222
1223 // Post-handle: stream terminal output/exit if present on ToolCallUpdate meta.
1224 if let acp::SessionUpdate::ToolCallUpdate(tcu) = &update_clone {
1225 if let Some(meta) = &tcu.meta {
1226 if let Some(term_out) = meta.get("terminal_output") {
1227 if let Some(id_str) = term_out.get("terminal_id").and_then(|v| v.as_str()) {
1228 let terminal_id = acp::TerminalId::new(id_str);
1229 if let Some(s) = term_out.get("data").and_then(|v| v.as_str()) {
1230 let data = s.as_bytes().to_vec();
1231 let _ = session.thread.update(&mut self.cx.clone(), |thread, cx| {
1232 thread.on_terminal_provider_event(
1233 TerminalProviderEvent::Output { terminal_id, data },
1234 cx,
1235 );
1236 });
1237 }
1238 }
1239 }
1240
1241 // terminal_exit
1242 if let Some(term_exit) = meta.get("terminal_exit") {
1243 if let Some(id_str) = term_exit.get("terminal_id").and_then(|v| v.as_str()) {
1244 let terminal_id = acp::TerminalId::new(id_str);
1245 let status = acp::TerminalExitStatus::new()
1246 .exit_code(
1247 term_exit
1248 .get("exit_code")
1249 .and_then(|v| v.as_u64())
1250 .map(|i| i as u32),
1251 )
1252 .signal(
1253 term_exit
1254 .get("signal")
1255 .and_then(|v| v.as_str().map(|s| s.to_string())),
1256 );
1257
1258 let _ = session.thread.update(&mut self.cx.clone(), |thread, cx| {
1259 thread.on_terminal_provider_event(
1260 TerminalProviderEvent::Exit {
1261 terminal_id,
1262 status,
1263 },
1264 cx,
1265 );
1266 });
1267 }
1268 }
1269 }
1270 }
1271
1272 Ok(())
1273 }
1274
1275 async fn create_terminal(
1276 &self,
1277 args: acp::CreateTerminalRequest,
1278 ) -> Result<acp::CreateTerminalResponse, acp::Error> {
1279 let thread = self.session_thread(&args.session_id)?;
1280 let project = thread.read_with(&self.cx, |thread, _cx| thread.project().clone())?;
1281
1282 let terminal_entity = acp_thread::create_terminal_entity(
1283 args.command.clone(),
1284 &args.args,
1285 args.env
1286 .into_iter()
1287 .map(|env| (env.name, env.value))
1288 .collect(),
1289 args.cwd.clone(),
1290 &project,
1291 &mut self.cx.clone(),
1292 )
1293 .await?;
1294
1295 // Register with renderer
1296 let terminal_entity = thread.update(&mut self.cx.clone(), |thread, cx| {
1297 thread.register_terminal_created(
1298 acp::TerminalId::new(uuid::Uuid::new_v4().to_string()),
1299 format!("{} {}", args.command, args.args.join(" ")),
1300 args.cwd.clone(),
1301 args.output_byte_limit,
1302 terminal_entity,
1303 cx,
1304 )
1305 })?;
1306 let terminal_id = terminal_entity.read_with(&self.cx, |terminal, _| terminal.id().clone());
1307 Ok(acp::CreateTerminalResponse::new(terminal_id))
1308 }
1309
1310 async fn kill_terminal_command(
1311 &self,
1312 args: acp::KillTerminalCommandRequest,
1313 ) -> Result<acp::KillTerminalCommandResponse, acp::Error> {
1314 self.session_thread(&args.session_id)?
1315 .update(&mut self.cx.clone(), |thread, cx| {
1316 thread.kill_terminal(args.terminal_id, cx)
1317 })??;
1318
1319 Ok(Default::default())
1320 }
1321
1322 async fn ext_method(&self, _args: acp::ExtRequest) -> Result<acp::ExtResponse, acp::Error> {
1323 Err(acp::Error::method_not_found())
1324 }
1325
1326 async fn ext_notification(&self, _args: acp::ExtNotification) -> Result<(), acp::Error> {
1327 Err(acp::Error::method_not_found())
1328 }
1329
1330 async fn release_terminal(
1331 &self,
1332 args: acp::ReleaseTerminalRequest,
1333 ) -> Result<acp::ReleaseTerminalResponse, acp::Error> {
1334 self.session_thread(&args.session_id)?
1335 .update(&mut self.cx.clone(), |thread, cx| {
1336 thread.release_terminal(args.terminal_id, cx)
1337 })??;
1338
1339 Ok(Default::default())
1340 }
1341
1342 async fn terminal_output(
1343 &self,
1344 args: acp::TerminalOutputRequest,
1345 ) -> Result<acp::TerminalOutputResponse, acp::Error> {
1346 self.session_thread(&args.session_id)?
1347 .read_with(&mut self.cx.clone(), |thread, cx| {
1348 let out = thread
1349 .terminal(args.terminal_id)?
1350 .read(cx)
1351 .current_output(cx);
1352
1353 Ok(out)
1354 })?
1355 }
1356
1357 async fn wait_for_terminal_exit(
1358 &self,
1359 args: acp::WaitForTerminalExitRequest,
1360 ) -> Result<acp::WaitForTerminalExitResponse, acp::Error> {
1361 let exit_status = self
1362 .session_thread(&args.session_id)?
1363 .update(&mut self.cx.clone(), |thread, cx| {
1364 anyhow::Ok(thread.terminal(args.terminal_id)?.read(cx).wait_for_exit())
1365 })??
1366 .await;
1367
1368 Ok(acp::WaitForTerminalExitResponse::new(exit_status))
1369 }
1370}
1371
1372impl ClientDelegate {
1373 fn session_thread(&self, session_id: &acp::SessionId) -> Result<WeakEntity<AcpThread>> {
1374 let sessions = self.sessions.borrow();
1375 sessions
1376 .get(session_id)
1377 .context("Failed to get session")
1378 .map(|session| session.thread.clone())
1379 }
1380}