| 1 | //! Public `EngineHandle` methods. |
| 2 | //! |
| 3 | //! The struct itself lives next door in `engine.rs` because two |
| 4 | //! construction sites (`Engine::new` and the test-only |
| 5 | //! `mock_engine_handle`) need access to its private mpsc channels. |
| 6 | //! The method surface — `send`, `cancel*`, `is_cancelled`, |
| 7 | //! `approve_tool_call` / `deny_tool_call` / `retry_tool_with_policy`, |
| 8 | //! `submit_user_input` / `cancel_user_input`, and `steer` — moves here |
| 9 | //! so the agent loop's mailbox API is reviewable on its own. |
| 10 | |
| 11 | use anyhow::Result; |
| 12 | use std::collections::VecDeque; |
| 13 | use std::sync::{Arc, Mutex as StdMutex}; |
| 14 | use tokio::sync::{mpsc, oneshot}; |
| 15 | use tokio_util::sync::CancellationToken; |
| 16 | |
| 17 | use codewhale_config::AppMode; |
| 18 | use codewhale_execpolicy::ApprovalMode; |
| 19 | |
| 20 | use super::approval::{ApprovalDecision, UserInputDecision}; |
| 21 | use super::{ |
| 22 | CancelReason, EngineHandle, LiveRuntimeAuthority, Op, RuntimePermissionAuthority, |
| 23 | UserInputResponse, |
| 24 | }; |
| 25 | |
| 26 | #[derive(Clone)] |
| 27 | pub(super) struct TurnControl { |
| 28 | pub id: u64, |
| 29 | pub cancel: CancellationToken, |
| 30 | pub reason: Arc<StdMutex<Option<CancelReason>>>, |
| 31 | } |
| 32 | |
| 33 | #[derive(Default)] |
| 34 | pub(super) struct TurnControls { |
| 35 | next_id: u64, |
| 36 | pub active: Option<TurnControl>, |
| 37 | pub pending: VecDeque<TurnControl>, |
| 38 | } |
| 39 | |
| 40 | impl TurnControls { |
| 41 | pub fn fresh(&mut self) -> TurnControl { |
| 42 | self.next_id = self |
| 43 | .next_id |
| 44 | .checked_add(1) |
| 45 | .expect("turn control id exhausted"); |
| 46 | TurnControl { |
| 47 | id: self.next_id, |
| 48 | cancel: CancellationToken::new(), |
| 49 | reason: Arc::new(StdMutex::new(None)), |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | fn target(&self) -> Option<&TurnControl> { |
| 54 | self.active.as_ref().or_else(|| self.pending.front()) |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | pub(super) struct TurnControlGuard { |
| 59 | pub controls: Arc<StdMutex<TurnControls>>, |
| 60 | pub id: u64, |
| 61 | } |
| 62 | |
| 63 | impl Drop for TurnControlGuard { |
| 64 | fn drop(&mut self) { |
| 65 | let mut controls = self |
| 66 | .controls |
| 67 | .lock() |
| 68 | .unwrap_or_else(std::sync::PoisonError::into_inner); |
| 69 | if controls |
| 70 | .active |
| 71 | .as_ref() |
| 72 | .is_some_and(|active| active.id == self.id) |
| 73 | { |
| 74 | controls.active = None; |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | #[derive(Debug)] |
| 80 | pub(crate) struct SteerInput { |
| 81 | pub(super) turn_id: Option<u64>, |
| 82 | pub(crate) content: String, |
| 83 | pub(super) outcome: Option<oneshot::Sender<SteerOutcome>>, |
| 84 | } |
| 85 | |
| 86 | /// The engine's verdict on one steer. A steer whose turn had already moved |
| 87 | /// on is discarded by `next_turn_steer`; the verdict tells the sender which |
| 88 | /// happened, because "the channel accepted the text" is not "the model saw |
| 89 | /// it" (#6276). |
| 90 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 91 | pub(crate) enum SteerOutcome { |
| 92 | /// The steer's text was committed into the session record inside the |
| 93 | /// turn it was sent to; the model received it. |
| 94 | Accepted, |
| 95 | /// The turn had already moved on (or ended) before the steer reached a |
| 96 | /// commit boundary. The model never saw the text. |
| 97 | Dropped, |
| 98 | } |
| 99 | |
| 100 | /// A steer the engine has taken ownership of. Committing it reports |
| 101 | /// [`SteerOutcome::Accepted`]; any other exit — interrupt, failure, early |
| 102 | /// return, silent drop of the pending queue — reports `Dropped` from `Drop`, |
| 103 | /// so no path can lose a verdict. |
| 104 | pub(crate) struct PendingSteer { |
| 105 | pub(crate) content: String, |
| 106 | outcome: Option<oneshot::Sender<SteerOutcome>>, |
| 107 | } |
| 108 | |
| 109 | impl PendingSteer { |
| 110 | pub(crate) fn new(content: String, outcome: Option<oneshot::Sender<SteerOutcome>>) -> Self { |
| 111 | Self { content, outcome } |
| 112 | } |
| 113 | |
| 114 | /// Commit the steer into the turn's record: report `Accepted`, then hand |
| 115 | /// back the text. Consuming `self` without calling this reports |
| 116 | /// `Dropped` via `Drop`. |
| 117 | pub(crate) fn commit(mut self) -> String { |
| 118 | if let Some(outcome) = self.outcome.take() { |
| 119 | let _ = outcome.send(SteerOutcome::Accepted); |
| 120 | } |
| 121 | // `Drop` runs after this returns and finds `outcome` already taken, |
| 122 | // so the verdict stays exactly one `Accepted`. |
| 123 | std::mem::take(&mut self.content) |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | impl Drop for PendingSteer { |
| 128 | fn drop(&mut self) { |
| 129 | if let Some(outcome) = self.outcome.take() { |
| 130 | let _ = outcome.send(SteerOutcome::Dropped); |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | impl SteerInput { |
| 136 | /// Take ownership of this steer as an unsettled [`PendingSteer`]. |
| 137 | /// |
| 138 | /// This is the only way to claim a steer off the channel. Whatever the |
| 139 | /// claimant then does — `commit()` or drop — settles it exactly once, so |
| 140 | /// there is one settlement mechanism rather than two (#6276). |
| 141 | pub(crate) fn into_pending(mut self) -> PendingSteer { |
| 142 | // Both fields are taken, so the `Drop` below finds nothing left to |
| 143 | // settle and the verdict travels with the `PendingSteer`. |
| 144 | PendingSteer::new(std::mem::take(&mut self.content), self.outcome.take()) |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | impl Drop for SteerInput { |
| 149 | fn drop(&mut self) { |
| 150 | if let Some(outcome) = self.outcome.take() { |
| 151 | let _ = outcome.send(SteerOutcome::Dropped); |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | impl std::ops::Deref for SteerInput { |
| 157 | type Target = str; |
| 158 | fn deref(&self) -> &str { |
| 159 | &self.content |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | impl std::fmt::Display for SteerInput { |
| 164 | fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { |
| 165 | self.content.fmt(f) |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | pub(crate) struct SteerPermit { |
| 170 | permit: mpsc::OwnedPermit<SteerInput>, |
| 171 | turn_id: Option<u64>, |
| 172 | } |
| 173 | |
| 174 | impl SteerPermit { |
| 175 | pub(crate) fn send(self, content: String) { |
| 176 | self.permit.send(SteerInput { |
| 177 | turn_id: self.turn_id, |
| 178 | content, |
| 179 | outcome: None, |
| 180 | }); |
| 181 | } |
| 182 | |
| 183 | /// Send a steer and receive the engine's verdict on it. The receiver |
| 184 | /// resolves to [`SteerOutcome::Accepted`] when the turn commits the text |
| 185 | /// into its record, [`SteerOutcome::Dropped`] when the turn moved on |
| 186 | /// first, and closes without a verdict only if the engine itself is gone |
| 187 | /// (#6276). |
| 188 | pub(crate) fn send_with_outcome(self, content: String) -> oneshot::Receiver<SteerOutcome> { |
| 189 | let (outcome_tx, outcome_rx) = oneshot::channel(); |
| 190 | self.permit.send(SteerInput { |
| 191 | turn_id: self.turn_id, |
| 192 | content, |
| 193 | outcome: Some(outcome_tx), |
| 194 | }); |
| 195 | outcome_rx |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | impl EngineHandle { |
| 200 | /// Called only while Runtime holds the idle turn admission claim. The |
| 201 | /// following SendMessage refreshes the existing prompt/config projection. |
| 202 | pub(crate) fn restore_runtime_goal( |
| 203 | &self, |
| 204 | goal: Option<&codewhale_protocol::ThreadGoal>, |
| 205 | ) -> Result<()> { |
| 206 | let mut state = self |
| 207 | .goal_state |
| 208 | .lock() |
| 209 | .map_err(|_| anyhow::anyhow!("goal state lock poisoned"))?; |
| 210 | let current = state.snapshot(); |
| 211 | if current.goal_id.as_deref() != goal.map(|goal| goal.goal_id.as_str()) { |
| 212 | *state = goal.map_or_else(crate::tools::goal::GoalState::default, |goal| { |
| 213 | crate::tools::goal::GoalState::from_snapshot( |
| 214 | &crate::tools::goal::GoalSnapshot::from_thread_goal(goal), |
| 215 | ) |
| 216 | }); |
| 217 | } |
| 218 | Ok(()) |
| 219 | } |
| 220 | |
| 221 | /// True when the caller must preflight a concrete provider client before |
| 222 | /// committing UI/runtime turn state. Test and embedding handles with an |
| 223 | /// injected model client return false because that client owns model I/O. |
| 224 | #[must_use] |
| 225 | pub(crate) fn client_preflight_required(&self) -> bool { |
| 226 | self.client_preflight_required |
| 227 | } |
| 228 | |
| 229 | /// Send an operation to the engine |
| 230 | /// |
| 231 | /// This awaits channel capacity, and the engine drains `rx_op` only |
| 232 | /// between turns — so on the UI event loop an awaited send into a |
| 233 | /// saturated mailbox freezes input for the rest of the turn (#6150). |
| 234 | /// Input-path callers instead either `try_send` a droppable op (report |
| 235 | /// the rejection) or `try_reserve_owned` before committing UI state and |
| 236 | /// hand off with `send_reserved_op`. An awaited `send` remains correct |
| 237 | /// only where the operation is part of a committed, ordered transition |
| 238 | /// (session/provider reload) whose drop would desync engine and UI. |
| 239 | pub async fn send(&self, op: Op) -> Result<()> { |
| 240 | let authority = Self::change_mode_authority(&op); |
| 241 | let permit = self.tx_op.clone().reserve_owned().await?; |
| 242 | if let Some(authority) = authority { |
| 243 | self.publish_runtime_authority(authority); |
| 244 | } |
| 245 | self.send_reserved_op(permit, op); |
| 246 | Ok(()) |
| 247 | } |
| 248 | |
| 249 | /// Try to send an operation without blocking. |
| 250 | /// |
| 251 | /// Returns `Err` if the channel is full or closed. Use this for |
| 252 | /// non-critical, refresh-type ops (e.g. `Op::ListSubAgents`) that can |
| 253 | /// safely be dropped and re-requested on the next drain cycle. |
| 254 | pub fn try_send(&self, op: Op) -> Result<()> { |
| 255 | let authority = Self::change_mode_authority(&op); |
| 256 | let result = self.tx_op.clone().try_reserve_owned(); |
| 257 | // A full channel already guarantees that the engine will wake and |
| 258 | // drain an operation. Publish the typed authority anyway: the drain |
| 259 | // applies pending authority before handling that queued operation, so |
| 260 | // a posture edit never blocks behind refresh traffic. A closed |
| 261 | // channel has no engine left to observe the update. |
| 262 | if !matches!(&result, Err(mpsc::error::TrySendError::Closed(_))) |
| 263 | && let Some(authority) = authority |
| 264 | { |
| 265 | self.publish_runtime_authority(authority); |
| 266 | } |
| 267 | // Keep the public error bound to the rejected operation. Callers use |
| 268 | // TrySendError<Op> to distinguish a retryable full mailbox from a |
| 269 | // stopped engine; reservation errors otherwise carry a Sender<Op>. |
| 270 | match result { |
| 271 | Ok(permit) => { |
| 272 | self.send_reserved_op(permit, op); |
| 273 | Ok(()) |
| 274 | } |
| 275 | Err(mpsc::error::TrySendError::Full(_)) => { |
| 276 | Err(mpsc::error::TrySendError::Full(op).into()) |
| 277 | } |
| 278 | Err(mpsc::error::TrySendError::Closed(_)) => { |
| 279 | Err(mpsc::error::TrySendError::Closed(op).into()) |
| 280 | } |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | /// Bind controls and enqueue under one lock, preserving the same FIFO as |
| 285 | /// the operation mailbox even when several senders hold reserved slots. |
| 286 | pub(crate) fn send_reserved_op(&self, permit: mpsc::OwnedPermit<Op>, op: Op) { |
| 287 | let mut controls = self |
| 288 | .turn_controls |
| 289 | .lock() |
| 290 | .unwrap_or_else(std::sync::PoisonError::into_inner); |
| 291 | if matches!(&op, Op::SendMessage(_)) { |
| 292 | let control = controls.fresh(); |
| 293 | controls.pending.push_back(control); |
| 294 | } |
| 295 | permit.send(op); |
| 296 | } |
| 297 | |
| 298 | fn change_mode_authority(op: &Op) -> Option<LiveRuntimeAuthority> { |
| 299 | let Op::ChangeMode { |
| 300 | mode, |
| 301 | allow_shell, |
| 302 | trust_mode, |
| 303 | auto_approve, |
| 304 | approval_mode, |
| 305 | configured_sandbox_mode, |
| 306 | } = op |
| 307 | else { |
| 308 | return None; |
| 309 | }; |
| 310 | Some(LiveRuntimeAuthority::from_fields( |
| 311 | *mode, |
| 312 | *allow_shell, |
| 313 | *trust_mode, |
| 314 | *auto_approve, |
| 315 | *approval_mode, |
| 316 | configured_sandbox_mode.clone(), |
| 317 | )) |
| 318 | } |
| 319 | |
| 320 | fn publish_runtime_authority(&self, authority: LiveRuntimeAuthority) { |
| 321 | let mut state = self |
| 322 | .live_runtime_authority |
| 323 | .lock() |
| 324 | .unwrap_or_else(std::sync::PoisonError::into_inner); |
| 325 | state.revision = state.revision.wrapping_add(1).max(1); |
| 326 | state.authority = authority; |
| 327 | } |
| 328 | |
| 329 | pub(crate) fn publish_turn_authority( |
| 330 | &self, |
| 331 | mode: AppMode, |
| 332 | allow_shell: bool, |
| 333 | trust_mode: bool, |
| 334 | auto_approve: bool, |
| 335 | approval_mode: ApprovalMode, |
| 336 | configured_sandbox_mode: Option<String>, |
| 337 | ) { |
| 338 | self.publish_runtime_authority(LiveRuntimeAuthority::from_fields( |
| 339 | mode, |
| 340 | allow_shell, |
| 341 | trust_mode, |
| 342 | auto_approve, |
| 343 | approval_mode, |
| 344 | configured_sandbox_mode, |
| 345 | )); |
| 346 | } |
| 347 | |
| 348 | /// Exact live permission authority for runtime approval and elevation |
| 349 | /// gates. This is the same typed state the active engine turn drains. |
| 350 | #[must_use] |
| 351 | pub(crate) fn runtime_permission_authority(&self) -> RuntimePermissionAuthority { |
| 352 | self.live_runtime_authority |
| 353 | .lock() |
| 354 | .unwrap_or_else(std::sync::PoisonError::into_inner) |
| 355 | .authority |
| 356 | .permission_snapshot() |
| 357 | } |
| 358 | |
| 359 | /// Reserve capacity for a runtime steer before it mutates durable state. |
| 360 | /// The owned permit lets the caller persist and dispatch synchronously, |
| 361 | /// without a cancellation point between those two operations. |
| 362 | pub(crate) async fn reserve_steer(&self) -> Result<SteerPermit> { |
| 363 | let permit = self.tx_steer.clone().reserve_owned().await?; |
| 364 | let turn_id = self |
| 365 | .turn_controls |
| 366 | .lock() |
| 367 | .unwrap_or_else(std::sync::PoisonError::into_inner) |
| 368 | .target() |
| 369 | .map(|control| control.id); |
| 370 | Ok(SteerPermit { permit, turn_id }) |
| 371 | } |
| 372 | |
| 373 | /// Cancel the current request (user-initiated path — keeps the |
| 374 | /// public `cancel()` signature stable). Equivalent to |
| 375 | /// `cancel_with_reason(CancelReason::User)`. |
| 376 | pub fn cancel(&self) { |
| 377 | self.cancel_with_reason(CancelReason::User); |
| 378 | } |
| 379 | |
| 380 | /// Cancel the current request and latch the reason so downstream |
| 381 | /// "request cancelled" error messages can name a cause. |
| 382 | pub fn cancel_with_reason(&self, reason: CancelReason) { |
| 383 | // Keep turn activation excluded until both the admitted control and |
| 384 | // the legacy shared token have been canceled. |
| 385 | let controls = self |
| 386 | .turn_controls |
| 387 | .lock() |
| 388 | .unwrap_or_else(std::sync::PoisonError::into_inner); |
| 389 | if let Some(control) = controls.target() { |
| 390 | *control |
| 391 | .reason |
| 392 | .lock() |
| 393 | .unwrap_or_else(std::sync::PoisonError::into_inner) = Some(reason); |
| 394 | control.cancel.cancel(); |
| 395 | } |
| 396 | match self.cancel_reason.lock() { |
| 397 | Ok(mut slot) => *slot = Some(reason), |
| 398 | Err(poisoned) => *poisoned.into_inner() = Some(reason), |
| 399 | } |
| 400 | match self.cancel_token.lock() { |
| 401 | Ok(token) => token.cancel(), |
| 402 | Err(poisoned) => poisoned.into_inner().cancel(), |
| 403 | } |
| 404 | crate::retry_status::clear(); |
| 405 | } |
| 406 | |
| 407 | /// Check if a request is currently cancelled |
| 408 | #[must_use] |
| 409 | pub fn is_cancelled(&self) -> bool { |
| 410 | if let Some(control) = self |
| 411 | .turn_controls |
| 412 | .lock() |
| 413 | .unwrap_or_else(std::sync::PoisonError::into_inner) |
| 414 | .target() |
| 415 | { |
| 416 | return control.cancel.is_cancelled(); |
| 417 | } |
| 418 | match self.cancel_token.lock() { |
| 419 | Ok(token) => token.is_cancelled(), |
| 420 | Err(poisoned) => poisoned.into_inner().is_cancelled(), |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | /// Pause or resume the current pausable command. |
| 425 | pub fn set_paused(&self, paused: bool) { |
| 426 | match self.shared_paused.lock() { |
| 427 | Ok(mut slot) => *slot = paused, |
| 428 | Err(poisoned) => *poisoned.into_inner() = paused, |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /// Check whether the engine pause gate is set. |
| 433 | #[cfg(test)] |
| 434 | #[must_use] |
| 435 | pub fn is_paused(&self) -> bool { |
| 436 | match self.shared_paused.lock() { |
| 437 | Ok(slot) => *slot, |
| 438 | Err(poisoned) => *poisoned.into_inner(), |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | /// Approve a pending tool call |
| 443 | pub async fn approve_tool_call(&self, id: impl Into<String>) -> Result<()> { |
| 444 | self.tx_approval |
| 445 | .send(ApprovalDecision::Approved { id: id.into() }) |
| 446 | .await?; |
| 447 | Ok(()) |
| 448 | } |
| 449 | |
| 450 | /// Deny a pending tool call |
| 451 | pub async fn deny_tool_call(&self, id: impl Into<String>) -> Result<()> { |
| 452 | self.tx_approval |
| 453 | .send(ApprovalDecision::Denied { id: id.into() }) |
| 454 | .await?; |
| 455 | Ok(()) |
| 456 | } |
| 457 | |
| 458 | /// Deny a pending tool call because its interactive approval card |
| 459 | /// expired (#6101). Kept distinct from [`Self::deny_tool_call`] so the |
| 460 | /// receipt records a timeout instead of an operator denial. |
| 461 | pub async fn deny_tool_call_timed_out(&self, id: impl Into<String>) -> Result<()> { |
| 462 | self.tx_approval |
| 463 | .send(ApprovalDecision::TimedOut { id: id.into() }) |
| 464 | .await?; |
| 465 | Ok(()) |
| 466 | } |
| 467 | |
| 468 | /// Retry a tool call with an elevated sandbox policy. |
| 469 | pub async fn retry_tool_with_policy( |
| 470 | &self, |
| 471 | id: impl Into<String>, |
| 472 | policy: crate::sandbox::SandboxPolicy, |
| 473 | ) -> Result<()> { |
| 474 | self.tx_approval |
| 475 | .send(ApprovalDecision::RetryWithPolicy { |
| 476 | id: id.into(), |
| 477 | policy, |
| 478 | }) |
| 479 | .await?; |
| 480 | Ok(()) |
| 481 | } |
| 482 | |
| 483 | /// Submit a response for request_user_input. |
| 484 | pub async fn submit_user_input( |
| 485 | &self, |
| 486 | id: impl Into<String>, |
| 487 | response: UserInputResponse, |
| 488 | ) -> Result<()> { |
| 489 | self.tx_user_input |
| 490 | .send(UserInputDecision::Submitted { |
| 491 | id: id.into(), |
| 492 | response, |
| 493 | }) |
| 494 | .await?; |
| 495 | Ok(()) |
| 496 | } |
| 497 | |
| 498 | /// Cancel a request_user_input prompt. |
| 499 | pub async fn cancel_user_input(&self, id: impl Into<String>) -> Result<()> { |
| 500 | self.tx_user_input |
| 501 | .send(UserInputDecision::Cancelled { id: id.into() }) |
| 502 | .await?; |
| 503 | Ok(()) |
| 504 | } |
| 505 | |
| 506 | /// Steer an in-flight turn with additional user input. |
| 507 | pub async fn steer(&self, content: impl Into<String>) -> Result<()> { |
| 508 | self.reserve_steer().await?.send(content.into()); |
| 509 | Ok(()) |
| 510 | } |
| 511 | |
| 512 | /// Request the live context-window budget for this session's route. |
| 513 | /// `None` means the route cannot express a bounded window (e.g. an |
| 514 | /// unknown model with no catalog or configured limits) — callers should |
| 515 | /// surface "unavailable" rather than inventing a number. |
| 516 | pub async fn get_context_budget( |
| 517 | &self, |
| 518 | ) -> Result<Option<crate::core::ops::SessionContextBudget>> { |
| 519 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 520 | let tx = std::sync::Arc::new(std::sync::Mutex::new(Some(tx))); |
| 521 | self.send(Op::GetContextBudget { tx }).await?; |
| 522 | rx.await |
| 523 | .map_err(|_| anyhow::anyhow!("Engine dropped context budget oneshot")) |
| 524 | } |
| 525 | |
| 526 | /// Request a snapshot of the current session state. |
| 527 | /// Returns the snapshot directly via a oneshot channel, avoiding |
| 528 | /// competition with the SSE event stream on the mpsc receiver. |
| 529 | pub async fn get_session_snapshot(&self) -> Result<crate::core::ops::SessionSnapshot> { |
| 530 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 531 | let tx = std::sync::Arc::new(std::sync::Mutex::new(Some(tx))); |
| 532 | self.send(Op::GetSessionSnapshot { tx }).await?; |
| 533 | rx.await |
| 534 | .map_err(|_| anyhow::anyhow!("Engine dropped session snapshot oneshot")) |
| 535 | } |
| 536 | |
| 537 | /// Query after the active turn settles, without competing with events. |
| 538 | /// The caller must keep draining events and bound this future: an active |
| 539 | /// turn can be awaiting provider/tool work or a full event channel. |
| 540 | pub(crate) async fn get_subagent_settlement( |
| 541 | &self, |
| 542 | ) -> Result<crate::core::ops::SubAgentSettlement> { |
| 543 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 544 | let tx = Arc::new(StdMutex::new(Some(tx))); |
| 545 | self.send(Op::GetSubAgentSettlement { tx }).await?; |
| 546 | rx.await |
| 547 | .map_err(|_| anyhow::anyhow!("Engine dropped child settlement receipt")) |
| 548 | } |
| 549 | |
| 550 | /// Request active provider request concurrency state. |
| 551 | pub async fn get_provider_runtime_status( |
| 552 | &self, |
| 553 | ) -> Result<crate::core::ops::ProviderRuntimeStatus> { |
| 554 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 555 | let tx = std::sync::Arc::new(std::sync::Mutex::new(Some(tx))); |
| 556 | self.send(Op::GetProviderRuntimeStatus { tx }).await?; |
| 557 | rx.await |
| 558 | .map_err(|_| anyhow::anyhow!("Engine dropped provider runtime status oneshot")) |
| 559 | } |
| 560 | |
| 561 | /// Run the bounded initial connection pass on the engine-owned MCP pool. |
| 562 | /// |
| 563 | /// The returned manager snapshot and every later tool call therefore see |
| 564 | /// the same connections and catalog generation. Unlike `reload_mcp`, this |
| 565 | /// does not force a config re-read or drop ready transports. Optional |
| 566 | /// servers are connected in the background at engine spawn; this waits |
| 567 | /// only if the caller explicitly asked for the settled receipt. |
| 568 | pub async fn bootstrap_mcp(&self) -> Result<crate::core::ops::McpManagerUpdate> { |
| 569 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 570 | let tx = std::sync::Arc::new(std::sync::Mutex::new(Some(tx))); |
| 571 | self.send(Op::BootstrapMcp { tx }).await?; |
| 572 | rx.await |
| 573 | .map_err(|_| anyhow::anyhow!("Engine dropped MCP bootstrap oneshot"))? |
| 574 | .map_err(anyhow::Error::msg) |
| 575 | } |
| 576 | |
| 577 | /// Retry one failed server through the existing engine-owned pool. |
| 578 | pub async fn retry_mcp_server( |
| 579 | &self, |
| 580 | name: impl Into<String>, |
| 581 | ) -> Result<crate::core::ops::McpManagerUpdate> { |
| 582 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 583 | let tx = std::sync::Arc::new(std::sync::Mutex::new(Some(tx))); |
| 584 | self.send(Op::RetryMcpServer { |
| 585 | name: name.into(), |
| 586 | tx, |
| 587 | }) |
| 588 | .await?; |
| 589 | rx.await |
| 590 | .map_err(|_| anyhow::anyhow!("Engine dropped MCP retry oneshot"))? |
| 591 | .map_err(anyhow::Error::msg) |
| 592 | } |
| 593 | |
| 594 | /// Force the engine-owned MCP pool to reload and reconnect, returning a |
| 595 | /// snapshot from the exact live pool that supplies the next model turn. |
| 596 | pub async fn reload_mcp( |
| 597 | &self, |
| 598 | config_path: std::path::PathBuf, |
| 599 | ) -> Result<crate::core::ops::McpManagerUpdate> { |
| 600 | let (tx, rx) = tokio::sync::oneshot::channel(); |
| 601 | let tx = std::sync::Arc::new(std::sync::Mutex::new(Some(tx))); |
| 602 | self.send(Op::ReloadMcp { config_path, tx }).await?; |
| 603 | rx.await |
| 604 | .map_err(|_| anyhow::anyhow!("Engine dropped MCP reload oneshot"))? |
| 605 | .map_err(anyhow::Error::msg) |
| 606 | } |
| 607 | } |
| 608 |