| 1 | //! Private captured child configuration for the canonical Engine. |
| 2 | use super::*; |
| 3 | use crate::tools::subagent::engine::ChildAuthority; |
| 4 | use anyhow::anyhow; |
| 5 | |
| 6 | pub(super) struct ChildHostSetup { |
| 7 | pub authority: Arc<ChildAuthority>, |
| 8 | pub system_prompt: SystemPrompt, |
| 9 | pub attachment: Option<crate::extension_host::HostAttachment>, |
| 10 | } |
| 11 | pub(super) struct ChildHostState { |
| 12 | pub authority: Arc<ChildAuthority>, |
| 13 | pub system_prompt: SystemPrompt, |
| 14 | job: Option<Arc<crate::tools::subagent::engine::ChildJob>>, |
| 15 | handle: Option<EngineHandle>, |
| 16 | pub(super) report: Option<crate::tools::subagent::budget_handback::ReportAdmission>, |
| 17 | route_runtime: crate::tools::subagent::SubAgentRuntime, |
| 18 | replacements_tried: usize, |
| 19 | pin_fallback_used: bool, |
| 20 | pending_route: Option<( |
| 21 | crate::tools::subagent::SubAgentRuntime, |
| 22 | ValidatedRuntimeRoute, |
| 23 | )>, |
| 24 | pub(super) request_stop_reason: Option<&'static str>, |
| 25 | } |
| 26 | impl From<ChildHostSetup> for ChildHostState { |
| 27 | fn from(setup: ChildHostSetup) -> Self { |
| 28 | let route_runtime = setup.authority.runtime.clone(); |
| 29 | Self { |
| 30 | route_runtime, |
| 31 | replacements_tried: 0, |
| 32 | pin_fallback_used: false, |
| 33 | pending_route: None, |
| 34 | request_stop_reason: None, |
| 35 | authority: setup.authority, |
| 36 | system_prompt: setup.system_prompt, |
| 37 | job: None, |
| 38 | handle: None, |
| 39 | report: None, |
| 40 | } |
| 41 | } |
| 42 | } |
| 43 | impl Engine { |
| 44 | pub(super) fn new_tool_execution_id(&self) -> String { |
| 45 | self.child_host.as_ref().map_or_else( |
| 46 | || uuid::Uuid::new_v4().to_string(), |
| 47 | |child| child.authority.new_execution_id(), |
| 48 | ) |
| 49 | } |
| 50 | |
| 51 | pub(crate) fn new_child_admitted( |
| 52 | mut config: EngineConfig, |
| 53 | api_config: &Config, |
| 54 | authority: Arc<ChildAuthority>, |
| 55 | system_prompt: SystemPrompt, |
| 56 | attachment: Option<crate::extension_host::HostAttachment>, |
| 57 | ) -> Result<(Self, EngineHandle)> { |
| 58 | anyhow::ensure!( |
| 59 | config.workspace == authority.runtime.context.workspace, |
| 60 | "child Engine workspace differs from its captured caller" |
| 61 | ); |
| 62 | anyhow::ensure!( |
| 63 | !authority.runtime.context.state_namespace.trim().is_empty(), |
| 64 | "child Engine needs its captured root session namespace" |
| 65 | ); |
| 66 | config.session_id = Some(authority.runtime.context.state_namespace.clone()); |
| 67 | config.plugin_registry = authority.runtime.context.plugin_registry.clone(); |
| 68 | config.runtime_services = authority.runtime.context.runtime.clone(); |
| 69 | config.todos = authority.runtime.todos.clone(); |
| 70 | config.max_spawn_depth = authority.runtime.max_spawn_depth; |
| 71 | config.allow_shell = authority.runtime.allow_shell; |
| 72 | config.trust_mode = authority.runtime.context.trust_mode; |
| 73 | config.network_policy = authority.runtime.context.network_policy.clone(); |
| 74 | if let Some(skills_dir) = authority.runtime.context.skills_dir.as_ref() { |
| 75 | config.skills_dir = skills_dir.clone(); |
| 76 | } |
| 77 | config.skills_discovery_mode = authority.runtime.context.skills_discovery_mode; |
| 78 | config.features = authority.runtime.context.features.clone(); |
| 79 | config.snapshots_enabled = false; |
| 80 | config.memory_enabled = false; |
| 81 | config.terminal_chrome_enabled = false; |
| 82 | config.advisor_config = crate::tools::subagent::AdvisorConfig::disabled(); |
| 83 | config.goal_objective = None; |
| 84 | config.goal_status = GoalStatus::Paused; |
| 85 | config.exec_policy_engine = api_config.exec_policy_engine.clone(); |
| 86 | let (mut engine, handle) = Self::new_admitted( |
| 87 | config, |
| 88 | api_config, |
| 89 | Some(EngineHostSetup::Child(ChildHostSetup { |
| 90 | authority, |
| 91 | system_prompt, |
| 92 | attachment, |
| 93 | })), |
| 94 | ); |
| 95 | engine |
| 96 | .child_host |
| 97 | .as_mut() |
| 98 | .expect("captured child setup") |
| 99 | .handle = Some(handle.clone()); |
| 100 | // The actual caller supplied this frozen concrete client. Route |
| 101 | // identity is still resolved and installed by the same Core seam. |
| 102 | engine.model_client_injected = true; |
| 103 | let posture = engine.runtime_authority_snapshot(); |
| 104 | engine.apply_runtime_mode_policy(&TurnAuthority::from_effective_fields( |
| 105 | posture.mode, |
| 106 | posture.allow_shell, |
| 107 | posture.trust_mode, |
| 108 | posture.auto_approve, |
| 109 | posture.approval_mode, |
| 110 | )); |
| 111 | Ok((engine, handle)) |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | impl Engine { |
| 116 | pub(crate) fn install_child_job( |
| 117 | &mut self, |
| 118 | job: Arc<crate::tools::subagent::engine::ChildJob>, |
| 119 | seed: Vec<Message>, |
| 120 | ) -> Result<()> { |
| 121 | let state = self |
| 122 | .child_host |
| 123 | .as_mut() |
| 124 | .ok_or_else(|| anyhow!("not a captured child Engine"))?; |
| 125 | anyhow::ensure!( |
| 126 | Arc::ptr_eq(&state.authority, &job.authority), |
| 127 | "child job changed captured authority" |
| 128 | ); |
| 129 | anyhow::ensure!(state.job.is_none(), "child assignment is already installed"); |
| 130 | let system = state.system_prompt.clone(); |
| 131 | state.job = Some(job); |
| 132 | self.restore_session_history(seed, Some(system), true); |
| 133 | Ok(()) |
| 134 | } |
| 135 | |
| 136 | pub(crate) fn child_turn_spec( |
| 137 | &self, |
| 138 | content: String, |
| 139 | allowed_tools: Option<Vec<String>>, |
| 140 | ) -> Result<TurnSpec> { |
| 141 | let state = self |
| 142 | .child_host |
| 143 | .as_ref() |
| 144 | .ok_or_else(|| anyhow!("not a captured child Engine"))?; |
| 145 | state |
| 146 | .authority |
| 147 | .validate_context(&state.authority.context())?; |
| 148 | let posture = self.runtime_authority_snapshot(); |
| 149 | Ok(TurnSpec { |
| 150 | content, |
| 151 | images: Vec::new(), |
| 152 | mode: posture.mode, |
| 153 | route: Box::new(self.current_runtime_route().map_err(anyhow::Error::msg)?), |
| 154 | compaction: Box::new(self.config.compaction.clone()), |
| 155 | initial_routed_usage: Box::default(), |
| 156 | goal_objective: None, |
| 157 | goal_token_budget: None, |
| 158 | goal_status: GoalStatus::Paused, |
| 159 | reasoning_effort: state.route_runtime.reasoning_effort.clone(), |
| 160 | reasoning_effort_auto: false, |
| 161 | auto_model: false, |
| 162 | allow_shell: state.authority.runtime.allow_shell && posture.allow_shell, |
| 163 | trust_mode: state.authority.runtime.context.trust_mode, |
| 164 | auto_approve: posture.auto_approve, |
| 165 | approval_mode: posture.approval_mode, |
| 166 | translation_enabled: false, |
| 167 | allowed_tools, |
| 168 | dynamic_tools: Vec::new(), |
| 169 | hook_executor: self.config.hook_executor.clone(), |
| 170 | verbosity: None, |
| 171 | provenance: UserInputProvenance::Runtime, |
| 172 | submission_id: None, |
| 173 | max_output_tokens: None, |
| 174 | }) |
| 175 | } |
| 176 | |
| 177 | pub(super) fn child_job(&self) -> Option<Arc<crate::tools::subagent::engine::ChildJob>> { |
| 178 | self.child_host.as_ref().and_then(|state| state.job.clone()) |
| 179 | } |
| 180 | pub(super) fn child_request_protocol(&self) -> Option<codewhale_config::provider::WireFormat> { |
| 181 | self.child_host |
| 182 | .as_ref() |
| 183 | .map(|state| state.route_runtime.client.wire_format()) |
| 184 | } |
| 185 | pub(super) fn child_report(&self) -> bool { |
| 186 | self.child_host |
| 187 | .as_ref() |
| 188 | .is_some_and(|state| state.report.is_some()) |
| 189 | } |
| 190 | |
| 191 | /// Executes a queued assignment or its single bounded reporting turn. |
| 192 | /// Both go through handle_send_message -> run_turn, the same Session and |
| 193 | /// Core approval inbox. The next report is reserved on the existing FIFO. |
| 194 | pub(super) async fn handle_child_send_message( |
| 195 | &mut self, |
| 196 | spec: TurnSpec, |
| 197 | ) -> Result<Option<crate::tools::subagent::SubAgentResult>> { |
| 198 | use crate::tools::subagent::SubAgentStatus; |
| 199 | let job = self |
| 200 | .child_job() |
| 201 | .ok_or_else(|| anyhow!("child Engine has no admitted assignment"))?; |
| 202 | self.child_host |
| 203 | .as_mut() |
| 204 | .expect("captured child") |
| 205 | .request_stop_reason = None; |
| 206 | let reporting = self.child_report(); |
| 207 | let replay_content = spec.content.clone(); |
| 208 | let replay_scope = spec.allowed_tools.clone(); |
| 209 | let deadline = if reporting { |
| 210 | self.child_host |
| 211 | .as_ref() |
| 212 | .and_then(|state| state.report.as_ref()) |
| 213 | .map(|report| report.deadline) |
| 214 | } else { |
| 215 | job.work_deadline |
| 216 | }; |
| 217 | let admitted = self |
| 218 | .admitted_turn_control |
| 219 | .as_ref() |
| 220 | .map(|control| control.cancel.clone()); |
| 221 | // This is the exact queued turn token, never the parent's or a later |
| 222 | // report's token. Dropping the timer aborts it after settlement. |
| 223 | let timer = deadline.zip(admitted).map(|(deadline, cancel)| { |
| 224 | let job = job.clone(); |
| 225 | turn_heartbeat::AbortOnDrop(tokio::spawn(async move { |
| 226 | tokio::time::sleep_until(deadline.into()).await; |
| 227 | if !reporting { |
| 228 | job.stop_for_budget("child wall-time work budget exhausted"); |
| 229 | } |
| 230 | cancel.cancel(); |
| 231 | })) |
| 232 | }); |
| 233 | let outcome = Box::pin(self.handle_send_message(spec)).await; |
| 234 | // Capture expiry at the actual Core outcome. Later checkpoint/ledger |
| 235 | // contention cannot relabel an already-settled provider refusal. |
| 236 | let report_deadline_expired = |
| 237 | reporting && deadline.is_some_and(|deadline| Instant::now() >= deadline); |
| 238 | drop(timer); |
| 239 | job.project(&self.session.messages, job.steps()).await?; |
| 240 | if job.authority.runtime.cancel_token.is_cancelled() { |
| 241 | return job |
| 242 | .finish( |
| 243 | &self.session.messages, |
| 244 | job.steps(), |
| 245 | SubAgentStatus::Cancelled, |
| 246 | None, |
| 247 | None, |
| 248 | ) |
| 249 | .await |
| 250 | .map(Some); |
| 251 | } |
| 252 | let pending_route = self |
| 253 | .child_host |
| 254 | .as_mut() |
| 255 | .and_then(|state| state.pending_route.take()); |
| 256 | if let Some((runtime, route)) = pending_route { |
| 257 | // The old request failed before a response. A fresh admitted turn |
| 258 | // reuses the exact original task on this same Engine/FIFO; it rebuilds |
| 259 | // tools, Native prompt sections and Core dispatch receipts together. |
| 260 | let client = runtime.client.clone(); |
| 261 | self.install_validated_runtime_route(route); |
| 262 | self.model_client = Some(Arc::new(client)); |
| 263 | self.session.reasoning_effort = runtime.reasoning_effort.clone(); |
| 264 | self.session.reasoning_effort_auto = runtime.reasoning_effort_auto; |
| 265 | job.installed_replacement(&runtime.model); |
| 266 | self.child_host |
| 267 | .as_mut() |
| 268 | .expect("captured child") |
| 269 | .route_runtime = runtime; |
| 270 | let spec = self.child_turn_spec(replay_content, replay_scope)?; |
| 271 | self.child_host |
| 272 | .as_ref() |
| 273 | .expect("captured child") |
| 274 | .handle |
| 275 | .as_ref() |
| 276 | .expect("same Engine handle") |
| 277 | .send(Op::SendMessage(spec)) |
| 278 | .await?; |
| 279 | return Ok(None); |
| 280 | } |
| 281 | let (status, error) = match outcome { |
| 282 | SendMessageOutcome::Finished { status, error } => (status, error), |
| 283 | SendMessageOutcome::NotStarted { error } => (TurnOutcomeStatus::Failed, error), |
| 284 | }; |
| 285 | let text = self |
| 286 | .session |
| 287 | .messages |
| 288 | .iter() |
| 289 | .rev() |
| 290 | .find(|message| { |
| 291 | message.role == codewhale_models::Role::Assistant |
| 292 | || (matches!( |
| 293 | status, |
| 294 | TurnOutcomeStatus::Interrupted | TurnOutcomeStatus::Failed |
| 295 | ) && message.role == codewhale_models::Role::InterruptedAssistant) |
| 296 | }) |
| 297 | .map(|message| { |
| 298 | message |
| 299 | .content |
| 300 | .iter() |
| 301 | .filter_map(|block| match block { |
| 302 | ContentBlock::Text { text, .. } if !text.trim().is_empty() => { |
| 303 | Some(text.as_str()) |
| 304 | } |
| 305 | _ => None, |
| 306 | }) |
| 307 | .collect::<Vec<_>>() |
| 308 | .join("\n") |
| 309 | }) |
| 310 | .filter(|text| !text.trim().is_empty()); |
| 311 | if let Some(cause) = job.budget_reason() { |
| 312 | if !reporting { |
| 313 | match crate::tools::subagent::budget_handback::admit_report( |
| 314 | &job, |
| 315 | &self.session.messages, |
| 316 | &cause, |
| 317 | self.model_client |
| 318 | .as_ref() |
| 319 | .expect("installed selected client") |
| 320 | .effective_max_output_tokens(&self.session.model), |
| 321 | ) |
| 322 | .await |
| 323 | { |
| 324 | Ok(report) => { |
| 325 | let content = report |
| 326 | .messages |
| 327 | .iter() |
| 328 | .flat_map(|message| &message.content) |
| 329 | .filter_map(|block| match block { |
| 330 | ContentBlock::Text { text, .. } => Some(text.as_str()), |
| 331 | _ => None, |
| 332 | }) |
| 333 | .collect::<Vec<_>>() |
| 334 | .join("\n"); |
| 335 | let mut spec = self.child_turn_spec(content, Some(Vec::new()))?; |
| 336 | spec.allow_shell = false; |
| 337 | spec.max_output_tokens = std::num::NonZeroU32::new(report.output_tokens); |
| 338 | self.config.max_steps = 1; |
| 339 | let state = self.child_host.as_mut().expect("captured child"); |
| 340 | state.report = Some(report); |
| 341 | // A fresh queued scope cannot erase parent cancellation: |
| 342 | // it is rechecked by the transport and every dispatch. |
| 343 | state |
| 344 | .handle |
| 345 | .as_ref() |
| 346 | .expect("same Core handle") |
| 347 | .send(Op::SendMessage(spec)) |
| 348 | .await?; |
| 349 | return Ok(None); |
| 350 | } |
| 351 | Err(reason) => { |
| 352 | let partial = |
| 353 | crate::tools::subagent::budget_handback::fallback_partial_text( |
| 354 | &self.session.messages, |
| 355 | ); |
| 356 | return job |
| 357 | .finish( |
| 358 | &self.session.messages, |
| 359 | job.steps(), |
| 360 | SubAgentStatus::BudgetExhausted, |
| 361 | Some(format!("{partial}\n\n{reason}")), |
| 362 | Some(&cause), |
| 363 | ) |
| 364 | .await |
| 365 | .map(Some); |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | let report = if status == TurnOutcomeStatus::Completed && error.is_none() { |
| 370 | text |
| 371 | } else { |
| 372 | None |
| 373 | }; |
| 374 | let mut partial = report.unwrap_or_else(|| { |
| 375 | crate::tools::subagent::budget_handback::fallback_partial_text( |
| 376 | &self.session.messages, |
| 377 | ) |
| 378 | }); |
| 379 | let mut receipt = if status == TurnOutcomeStatus::Completed && error.is_none() { |
| 380 | "Host budget hand-back receipt: one completed bounded report; assignment remains incomplete.".to_string() |
| 381 | } else if report_deadline_expired { |
| 382 | "Host budget hand-back receipt: report deadline expired; recorded work is preserved.".to_string() |
| 383 | } else { |
| 384 | format!( |
| 385 | "Host budget hand-back receipt: provider call failed or report did not finish: {}. Recorded work is preserved.", |
| 386 | error.as_deref().unwrap_or("Core report interrupted") |
| 387 | ) |
| 388 | }; |
| 389 | if job |
| 390 | .authority |
| 391 | .runtime |
| 392 | .manager |
| 393 | .read() |
| 394 | .await |
| 395 | .get_worker_record(&job.authority.owner_agent_id) |
| 396 | .is_some_and(|record| record.has_unreported_usage) |
| 397 | { |
| 398 | receipt.push_str(" Measured usage is only a subtotal, not a zero-cost report; unreported provider usage remains unknown."); |
| 399 | } |
| 400 | partial.push_str(&format!("\n\n{receipt}")); |
| 401 | // Record the host's actual outcome alongside this same canonical |
| 402 | // Session, before finish saves/projects the result checkpoint. |
| 403 | self.add_session_message( |
| 404 | self.runtime_text_message_with_turn_metadata(receipt, UserInputProvenance::Runtime), |
| 405 | ) |
| 406 | .await; |
| 407 | return job |
| 408 | .finish( |
| 409 | &self.session.messages, |
| 410 | job.steps(), |
| 411 | SubAgentStatus::BudgetExhausted, |
| 412 | Some(partial), |
| 413 | Some(&cause), |
| 414 | ) |
| 415 | .await |
| 416 | .map(Some); |
| 417 | } |
| 418 | let child_status = match (status, error.as_ref(), text.as_ref()) { |
| 419 | (TurnOutcomeStatus::Completed, None, Some(_)) => SubAgentStatus::Completed, |
| 420 | (TurnOutcomeStatus::Interrupted, _, _) => SubAgentStatus::Interrupted( |
| 421 | error |
| 422 | .clone() |
| 423 | .unwrap_or_else(|| "Core child turn interrupted".into()), |
| 424 | ), |
| 425 | (TurnOutcomeStatus::Failed, Some(reason), _) |
| 426 | if reason == super::dispatch::FLEET_NO_PROGRESS_STOP => |
| 427 | { |
| 428 | // Core's terminal no-progress report stays Failed even after |
| 429 | // earlier steps; checkpoint preservation cannot erase its cause. |
| 430 | SubAgentStatus::Failed(reason.clone()) |
| 431 | } |
| 432 | (TurnOutcomeStatus::Failed, _, _) if job.steps() > 1 => { |
| 433 | SubAgentStatus::Interrupted(error.clone().unwrap_or_else(|| { |
| 434 | "child stopped after prior work; checkpoint preserved".into() |
| 435 | })) |
| 436 | } |
| 437 | _ => SubAgentStatus::Failed( |
| 438 | error |
| 439 | .clone() |
| 440 | .unwrap_or_else(|| "child stopped without a final summary".into()), |
| 441 | ), |
| 442 | }; |
| 443 | job.finish( |
| 444 | &self.session.messages, |
| 445 | job.steps(), |
| 446 | child_status, |
| 447 | text, |
| 448 | self.child_host |
| 449 | .as_ref() |
| 450 | .and_then(|state| state.request_stop_reason) |
| 451 | .or(error.as_deref()), |
| 452 | ) |
| 453 | .await |
| 454 | .map(Some) |
| 455 | } |
| 456 | |
| 457 | pub(super) fn clear_child_pending_route(&mut self) { |
| 458 | if let Some(state) = self.child_host.as_mut() { |
| 459 | state.pending_route = None; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | pub(super) async fn retract_child_unsent_message( |
| 464 | &mut self, |
| 465 | mark: crate::core::turn::UnansweredUserMessage, |
| 466 | ) -> Result<bool> { |
| 467 | if !self.can_retract_unanswered_user_message(mark) { |
| 468 | return Ok(false); |
| 469 | } |
| 470 | if let Some(job) = self.child_job() { |
| 471 | let old = self.session.messages.to_vec(); |
| 472 | // Preserve durable dispatch/history evidence before changing the |
| 473 | // live projection. The one actor owns both sides of this await. |
| 474 | if let Err(error) = job.before_replace(&old, &old[..mark.len - 1]).await { |
| 475 | self.child_host |
| 476 | .as_mut() |
| 477 | .expect("captured child") |
| 478 | .pending_route = None; |
| 479 | return Err(error); |
| 480 | } |
| 481 | } |
| 482 | Ok(self.retract_unanswered_user_message(mark)) |
| 483 | } |
| 484 | |
| 485 | pub(super) async fn admit_child_first_request_replacement( |
| 486 | &mut self, |
| 487 | error: &anyhow::Error, |
| 488 | ) -> Result<bool> { |
| 489 | let Some(job) = self.child_job() else { |
| 490 | return Ok(false); |
| 491 | }; |
| 492 | if self.child_report() || !job.can_replace_first_request() { |
| 493 | return Ok(false); |
| 494 | } |
| 495 | let state = self.child_host.as_mut().expect("captured child"); |
| 496 | let Some((next, source, note)) = |
| 497 | crate::tools::subagent::engine::approved_first_request_replacement( |
| 498 | &job, |
| 499 | &state.route_runtime, |
| 500 | &mut state.replacements_tried, |
| 501 | &mut state.pin_fallback_used, |
| 502 | error, |
| 503 | )? |
| 504 | else { |
| 505 | return Ok(false); |
| 506 | }; |
| 507 | let api = next |
| 508 | .api_config |
| 509 | .as_deref() |
| 510 | .ok_or_else(|| anyhow!("approved child replacement has no captured config"))?; |
| 511 | let resolved = crate::route_runtime::resolve_runtime_route_for_identity( |
| 512 | api, |
| 513 | next.client.admitted_provider_identity(), |
| 514 | Some(&next.model), |
| 515 | ) |
| 516 | .map_err(anyhow::Error::msg)?; |
| 517 | let mut route = resolved.validate().map_err(anyhow::Error::msg)?; |
| 518 | anyhow::ensure!( |
| 519 | next.client.admitted_provider_identity() == &route.identity |
| 520 | && route.candidate.endpoint().base_url == next.client.base_url(), |
| 521 | "approved child replacement client differs from its exact route" |
| 522 | ); |
| 523 | route.client = next.client.clone(); |
| 524 | job.authority.validate_context(&job.authority.context())?; |
| 525 | job.record_route_replacement(&state.route_runtime, &next, source, note.clone(), error) |
| 526 | .await; |
| 527 | state.pending_route = Some((next, route)); |
| 528 | let _ = self.send_event(Event::status(note)).await; |
| 529 | Ok(true) |
| 530 | } |
| 531 | |
| 532 | pub(crate) async fn run_child(self) -> Result<crate::tools::subagent::SubAgentResult> { |
| 533 | self.run_owned().await.ok_or_else(|| { |
| 534 | anyhow!("child Core actor stopped without a terminal assignment receipt") |
| 535 | })? |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | /// Test observer of Core's actual surface policy and activation cache. It has |
| 540 | /// no executor, permission policy or request producer of its own. |
| 541 | #[cfg(test)] |
| 542 | pub(crate) struct ChildSurfaceProbe { |
| 543 | pub(super) policy: ToolSurfacePolicy, |
| 544 | pub(super) cache: crate::core::session::ToolActivationCache, |
| 545 | } |
| 546 | #[cfg(test)] |
| 547 | impl ChildSurfaceProbe { |
| 548 | pub(crate) fn new(catalog: Vec<codewhale_models::Tool>, warm: &[String]) -> Self { |
| 549 | let policy = ToolSurfacePolicy::new( |
| 550 | crate::tools::ToolRegistry::new(ToolContext::for_empty_registry()), |
| 551 | Some(catalog), |
| 552 | AppMode::Agent, |
| 553 | &HashSet::new(), |
| 554 | &[], |
| 555 | false, |
| 556 | None, |
| 557 | None, |
| 558 | None, |
| 559 | tool_catalog::ToolMode::Direct, |
| 560 | ); |
| 561 | let mut probe = Self { |
| 562 | policy, |
| 563 | cache: Default::default(), |
| 564 | }; |
| 565 | let activated = probe.cache.activate(&probe.policy.catalog, warm); |
| 566 | probe.policy.active_names.extend(activated.admitted); |
| 567 | probe |
| 568 | } |
| 569 | pub(crate) fn catalog(&self) -> &[codewhale_models::Tool] { |
| 570 | &self.policy.catalog |
| 571 | } |
| 572 | pub(crate) fn catalog_mut(&mut self) -> &mut Vec<codewhale_models::Tool> { |
| 573 | &mut self.policy.catalog |
| 574 | } |
| 575 | pub(crate) fn active_names(&self) -> &HashSet<String> { |
| 576 | &self.policy.active_names |
| 577 | } |
| 578 | pub(crate) fn request_tools( |
| 579 | &mut self, |
| 580 | catalog: Vec<codewhale_models::Tool>, |
| 581 | strict: bool, |
| 582 | ) -> Vec<codewhale_models::Tool> { |
| 583 | self.policy.catalog = catalog; |
| 584 | self.cache.revalidate(&self.policy.catalog); |
| 585 | self.policy.active_names = tool_catalog::initial_active_tools(&self.policy.catalog); |
| 586 | self.policy |
| 587 | .active_names |
| 588 | .extend(self.cache.names().map(str::to_owned)); |
| 589 | tool_catalog::active_tools_for_request( |
| 590 | &self.policy.catalog, |
| 591 | &self.policy.active_names, |
| 592 | strict, |
| 593 | ) |
| 594 | .unwrap_or_default() |
| 595 | } |
| 596 | /// Pure cache admission probe; execution still runs Core's planner below. |
| 597 | pub(crate) fn hydrate( |
| 598 | &mut self, |
| 599 | name: &str, |
| 600 | input: &serde_json::Value, |
| 601 | ) -> Result<Option<String>> { |
| 602 | let activation = self |
| 603 | .cache |
| 604 | .activate(&self.policy.catalog, &[name.to_owned()]); |
| 605 | tool_catalog::remove_evicted_cache_activations( |
| 606 | &self.policy.catalog, |
| 607 | &mut self.policy.active_names, |
| 608 | activation.evicted, |
| 609 | ); |
| 610 | self.policy |
| 611 | .active_names |
| 612 | .extend(activation.admitted.iter().cloned()); |
| 613 | anyhow::ensure!( |
| 614 | activation.admitted.iter().any(|admitted| admitted == name), |
| 615 | "tool was not admitted by Core's bounded activation cache" |
| 616 | ); |
| 617 | let definition = self |
| 618 | .policy |
| 619 | .catalog |
| 620 | .iter() |
| 621 | .find(|tool| tool.name == name) |
| 622 | .ok_or_else(|| anyhow!("tool left the Core catalog"))?; |
| 623 | Ok( |
| 624 | (!tool_catalog::deferred_first_call_matches_schema(definition, input)).then(|| { |
| 625 | tool_catalog::deferred_tool_schema_hydration_result(definition, input).content |
| 626 | }), |
| 627 | ) |
| 628 | } |
| 629 | } |
| 630 | #[cfg(test)] |
| 631 | pub(crate) struct ChildProbeCall { |
| 632 | pub(crate) id: String, |
| 633 | pub(crate) execution_id: String, |
| 634 | pub(crate) name: String, |
| 635 | pub(crate) input: serde_json::Value, |
| 636 | } |
| 637 | |
| 638 | #[cfg(test)] |
| 639 | impl Engine { |
| 640 | /// Direct tests use the real admitted Core planner/executor and approval |
| 641 | /// inbox. The loop below only observes/relays those Core events. |
| 642 | pub(crate) async fn probe_child_call( |
| 643 | authority: Arc<ChildAuthority>, |
| 644 | registry: crate::tools::ToolRegistry, |
| 645 | surface: &mut ChildSurfaceProbe, |
| 646 | call: ChildProbeCall, |
| 647 | ) -> Result<crate::tools::spec::RichToolResult> { |
| 648 | let runtime = authority.runtime.clone(); |
| 649 | let owner = authority.owner_agent_id.clone(); |
| 650 | let api = runtime |
| 651 | .api_config |
| 652 | .as_deref() |
| 653 | .ok_or_else(|| anyhow!("fixture needs its explicit captured Config"))?; |
| 654 | let (mut engine, handle) = Self::new_child_admitted( |
| 655 | EngineConfig { |
| 656 | workspace: runtime.context.workspace.clone(), |
| 657 | model: runtime.model.clone(), |
| 658 | max_steps: 1, |
| 659 | auto_review_policy: runtime.auto_review_policy.as_ref().clone(), |
| 660 | ..Default::default() |
| 661 | }, |
| 662 | api, |
| 663 | authority, |
| 664 | SystemPrompt::Text("Core child batch probe".into()), |
| 665 | None, |
| 666 | )?; |
| 667 | surface.policy.registry = registry; |
| 668 | let mut events = handle.rx_event.write().await; |
| 669 | let execute = engine.probe_child_tool_batch(surface, call); |
| 670 | tokio::pin!(execute); |
| 671 | let mut approvals = futures_util::stream::FuturesUnordered::new(); |
| 672 | use futures_util::StreamExt; |
| 673 | let answer = loop { |
| 674 | tokio::select! { |
| 675 | biased; |
| 676 | result = &mut execute => break result, |
| 677 | () = runtime.cancel_token.cancelled(), if !handle.is_cancelled() => handle.cancel(), |
| 678 | Some((id, decision)) = approvals.next(), if !approvals.is_empty() => { |
| 679 | if runtime.cancel_token.is_cancelled() || handle.is_cancelled() { |
| 680 | handle.cancel(); |
| 681 | } else { |
| 682 | match decision { |
| 683 | Ok(crate::tools::subagent::ChildApprovalOutcome::Approved) => handle.approve_tool_call(id).await?, |
| 684 | Ok(crate::tools::subagent::ChildApprovalOutcome::Denied) => handle.deny_tool_call(id).await?, |
| 685 | _ => handle.deny_tool_call_unavailable(id).await?, |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | event = events.recv() => { |
| 690 | let Some(event) = event else { break Err(anyhow!("Core probe event stream closed")) }; |
| 691 | match &event { |
| 692 | Event::ApprovalRequired { id, tool_name, description, .. } => { |
| 693 | let (_, receiver) = runtime.manager.write().await.register_child_approval(&owner, id, tool_name, description)?; |
| 694 | let key = id.clone(); approvals.push(async move { (key, receiver.await) }); |
| 695 | if let Some(tx) = runtime.event_tx.as_ref().filter(|_| runtime.parent_can_prompt) { |
| 696 | let sent = tokio::select! { |
| 697 | biased; |
| 698 | () = runtime.cancel_token.cancelled() => false, |
| 699 | result = tx.send(event.clone()) => result.is_ok(), |
| 700 | }; |
| 701 | if !sent { |
| 702 | runtime.manager.write().await.cancel_child_approval(id); |
| 703 | handle.deny_tool_call_unavailable(id).await?; |
| 704 | } |
| 705 | } else { |
| 706 | runtime.manager.write().await.cancel_child_approval(id); |
| 707 | handle.deny_tool_call_unavailable(id).await?; |
| 708 | } |
| 709 | } |
| 710 | Event::ApprovalWithdrawn { id } => { |
| 711 | runtime.manager.write().await.cancel_child_approval(id); |
| 712 | if let Some(tx) = &runtime.event_tx { |
| 713 | tokio::select! { |
| 714 | biased; |
| 715 | () = runtime.cancel_token.cancelled() => { let _ = tx.try_send(event.clone()); }, |
| 716 | _ = tx.send(event.clone()) => {}, |
| 717 | } |
| 718 | } |
| 719 | } |
| 720 | Event::ToolGateDecision { .. } => { |
| 721 | crate::tools::subagent::engine::forward_child_gate_observation( |
| 722 | &runtime, |
| 723 | &owner, |
| 724 | event, |
| 725 | &handle.captured_turn_cancel(), |
| 726 | runtime.context.turn_deadline, |
| 727 | ).await; |
| 728 | } |
| 729 | _ => {} |
| 730 | } |
| 731 | } |
| 732 | } |
| 733 | }; |
| 734 | // The canonical batch may settle immediately after enqueueing its |
| 735 | // last receipt. Observe those exact queued decisions before handback. |
| 736 | while let Ok(event) = events.try_recv() { |
| 737 | if let Event::ApprovalWithdrawn { id } = &event { |
| 738 | runtime.manager.write().await.cancel_child_approval(id); |
| 739 | if let Some(tx) = &runtime.event_tx { |
| 740 | let _ = tx.try_send(event); |
| 741 | } |
| 742 | } else if matches!(event, Event::ToolGateDecision { .. }) { |
| 743 | crate::tools::subagent::engine::forward_child_gate_observation( |
| 744 | &runtime, |
| 745 | &owner, |
| 746 | event, |
| 747 | &handle.captured_turn_cancel(), |
| 748 | runtime.context.turn_deadline, |
| 749 | ) |
| 750 | .await; |
| 751 | } |
| 752 | } |
| 753 | let pending = runtime |
| 754 | .manager |
| 755 | .read() |
| 756 | .await |
| 757 | .pending_requests_for_agent(&owner); |
| 758 | for pending in pending { |
| 759 | runtime |
| 760 | .manager |
| 761 | .write() |
| 762 | .await |
| 763 | .cancel_child_approval(&pending.approval_id); |
| 764 | if let Some(tx) = &runtime.event_tx { |
| 765 | let _ = tx.try_send(Event::ApprovalWithdrawn { |
| 766 | id: pending.approval_id, |
| 767 | }); |
| 768 | } |
| 769 | } |
| 770 | answer |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | #[cfg(test)] |
| 775 | impl Engine { |
| 776 | pub(crate) fn probe_child_catalog( |
| 777 | authority: &ChildAuthority, |
| 778 | registry: &crate::tools::ToolRegistry, |
| 779 | ) -> Vec<codewhale_models::Tool> { |
| 780 | let catalog = tool_catalog::build_model_tool_catalog( |
| 781 | authority.tools_for_model(registry, &authority.agent_type), |
| 782 | Vec::new(), |
| 783 | AppMode::Agent, |
| 784 | &HashSet::new(), |
| 785 | ); |
| 786 | let mut copied = crate::tools::ToolRegistry::new(ToolContext::for_empty_registry()); |
| 787 | copied.register_all(registry.all()); |
| 788 | let mut policy = ToolSurfacePolicy::new( |
| 789 | copied, |
| 790 | Some(catalog), |
| 791 | AppMode::Agent, |
| 792 | &HashSet::new(), |
| 793 | &[], |
| 794 | false, |
| 795 | None, |
| 796 | None, |
| 797 | None, |
| 798 | tool_catalog::ToolMode::Direct, |
| 799 | ); |
| 800 | Self::narrow_child_surface(authority, &mut policy); |
| 801 | policy.catalog |
| 802 | } |
| 803 | } |
| 804 | impl Engine { |
| 805 | pub(super) fn narrow_child_surface( |
| 806 | authority: &ChildAuthority, |
| 807 | surface: &mut ToolSurfacePolicy, |
| 808 | ) { |
| 809 | let discoverable = !authority.grant.scope.as_ref().is_some_and(Vec::is_empty); |
| 810 | surface.catalog.retain(|tool| { |
| 811 | surface.registry.contains(&tool.name) |
| 812 | || (discoverable && tool_catalog::is_tool_search_tool(&tool.name)) |
| 813 | }); |
| 814 | surface |
| 815 | .active_names |
| 816 | .retain(|name| surface.catalog.iter().any(|tool| &tool.name == name)); |
| 817 | surface.active = tool_catalog::active_tools_for_request( |
| 818 | &surface.catalog, |
| 819 | &surface.active_names, |
| 820 | surface.strict_tool_mode, |
| 821 | ); |
| 822 | } |
| 823 | } |
| 824 |