| 1 | //! Superfast Decision Gate — a small, off-by-default "System One" front-door |
| 2 | //! classifier for the agent turn loop (#6603). |
| 3 | //! |
| 4 | //! Every user message normally wakes a large, slow, expensive model just to |
| 5 | //! decide intent and whether a tool is needed. The Decision Gate asks a small, |
| 6 | //! fast decision model (a Jev-compatible System One endpoint) those routine |
| 7 | //! questions in one non-generating pass, and derives a conservative routing |
| 8 | //! recommendation. A later, validated step could send each turn to the cheapest |
| 9 | //! correct path; this first increment only measures and logs. |
| 10 | //! |
| 11 | //! Design contract: |
| 12 | //! - Off by default. Nothing runs unless `SUPERFAST_ENABLED` is truthy, and |
| 13 | //! an enabled gate also needs `SUPERFAST_PROVIDER` naming the route it may |
| 14 | //! call, so turning the gate on never picks a paid endpoint by itself. |
| 15 | //! - Shadow mode. The gate classifies the turn and logs a typed |
| 16 | //! [`ShadowOutcome`] through `tracing` (target `superfast`), but never |
| 17 | //! changes routing, never skips or delays the model call, and never alters |
| 18 | //! any user-visible behavior. |
| 19 | //! - Fail open. Any error, timeout, non-2xx response, unreachable backend, |
| 20 | //! or malformed body is a typed failure class and the turn continues |
| 21 | //! exactly as if the gate were off. The call runs on a detached task. |
| 22 | //! - One transport. The call goes through the existing System One client |
| 23 | //! (`client::system_one`: `CodewhaleClient::for_decision_route` and |
| 24 | //! `system_one_decide`) that serves the `[auto.router] kind = "decision"` |
| 25 | //! router — same auth, TLS, secret redaction and one-attempt policy. There |
| 26 | //! is no second HTTP client. |
| 27 | //! |
| 28 | //! Configuration (environment, read when a turn starts): |
| 29 | //! - `SUPERFAST_ENABLED` — `1` / `true` / `yes` / `on` turns the gate on. |
| 30 | //! - `SUPERFAST_PROVIDER` — `typesafe` or `openrouter` (required when on). |
| 31 | //! The key comes from the same place the decision router reads it. |
| 32 | //! - `SUPERFAST_BASE_URL` — optional TypeSafe-route base override, e.g. a |
| 33 | //! self-hosted Jev server at `http://localhost:8000/v1`; `/systemone` is |
| 34 | //! appended. |
| 35 | //! - `SUPERFAST_MODEL` — decision model id (default `jev-latest` for |
| 36 | //! TypeSafe, `~typesafe/jev-latest` for OpenRouter). |
| 37 | //! - `SUPERFAST_TIMEOUT_MS` — per-call deadline, 1..=10000 (default 150). |
| 38 | //! |
| 39 | //! Known limits (written down so nobody assumes them): |
| 40 | //! - Shadow only: the recommendation is logged, never acted on. |
| 41 | //! - Only the latest user message's text is sent, truncated to 4,000 |
| 42 | //! characters and redacted of configured secrets. No prompt text is |
| 43 | //! logged; the log carries the route, failure class and latency. |
| 44 | //! - The TypeSafe route needs a TypeSafe key even for a self-hosted server |
| 45 | //! (the transport always authenticates); a server that ignores auth can |
| 46 | //! be given any placeholder key. |
| 47 | //! - Usage settles through the originating turn's shared ledger. Missing |
| 48 | //! usage or cancellation after dispatch records a coverage gap. TypeSafe |
| 49 | //! is an unpriced Custom route until a billing basis is reviewed. |
| 50 | //! - Misconfiguration while enabled (missing or unknown provider, bad |
| 51 | //! timeout, missing key) is logged at `warn` for each turn and nothing is |
| 52 | //! sent. |
| 53 | //! |
| 54 | //! The Decision Gate concept and the reference implementation are by Andrea |
| 55 | //! Bruno, released under Creative Commons Attribution 4.0 (CC BY 4.0); see |
| 56 | //! <https://github.com/Andrea-Bruno/harness-superfast>. The decision models |
| 57 | //! (Von, OpenJev, Laya) are third-party open models; only the integration |
| 58 | //! architecture and the routing method here are covered by that attribution. |
| 59 | |
| 60 | use std::sync::atomic::{AtomicBool, Ordering}; |
| 61 | use std::time::{Duration, Instant}; |
| 62 | |
| 63 | use serde_json::{Value, json}; |
| 64 | |
| 65 | use codewhale_core::request::{ContentBlock, Message}; |
| 66 | use codewhale_core::role::Role; |
| 67 | |
| 68 | use crate::client::CodewhaleClient; |
| 69 | use crate::client::system_one::{DecisionRouterRoute, SystemOneResponse}; |
| 70 | use crate::config::Config; |
| 71 | use crate::model_routing::{ |
| 72 | AutoRouterFailure, auto_route_usage_source_id, decision_usage_batch, truncate_for_auto_router, |
| 73 | }; |
| 74 | use tokio_util::sync::CancellationToken; |
| 75 | |
| 76 | #[derive(Clone)] |
| 77 | struct ShadowUsageContext { |
| 78 | scope: crate::cost_status::CostScopeToken, |
| 79 | runtime_owner: Option<String>, |
| 80 | // Retains the origin's existing durable ledger until settlement finishes. |
| 81 | _lease: Option<crate::cost_status::RuntimeUsageLease>, |
| 82 | #[cfg(test)] |
| 83 | test_origin: std::thread::ThreadId, |
| 84 | } |
| 85 | |
| 86 | impl ShadowUsageContext { |
| 87 | fn capture(owner: Option<&str>) -> Self { |
| 88 | let owner = owner.map(str::trim).filter(|owner| !owner.is_empty()); |
| 89 | Self { |
| 90 | scope: crate::cost_status::scope_token(), |
| 91 | runtime_owner: owner.map(str::to_owned), |
| 92 | _lease: owner.and_then(crate::cost_status::acquire_runtime_usage_lease), |
| 93 | #[cfg(test)] |
| 94 | test_origin: crate::cost_status::test_cost_scope_id(), |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | async fn report(&self, batch: crate::cost_status::RuntimeUsageBatch) { |
| 99 | let context = self.clone(); |
| 100 | // Existing sinks may write the origin-session ledger. Keep their |
| 101 | // filesystem/SQLite work off Tokio workers as well. |
| 102 | let settled = tokio::task::spawn_blocking(move || { |
| 103 | #[cfg(test)] |
| 104 | let _origin = crate::cost_status::bind_test_cost_scope(context.test_origin); |
| 105 | crate::cost_status::report_runtime_usage_batch( |
| 106 | context.scope, |
| 107 | context.runtime_owner.as_deref(), |
| 108 | &batch, |
| 109 | ); |
| 110 | // Release the lease while its captured test binding is still live. |
| 111 | drop(context); |
| 112 | }) |
| 113 | .await; |
| 114 | if settled.is_err() { |
| 115 | tracing::warn!(target: "superfast", "decision usage settlement worker failed"); |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /// Master switch. The gate never runs unless this env var is truthy. |
| 121 | const ENABLED_VAR: &str = "SUPERFAST_ENABLED"; |
| 122 | /// Which System One route the gate may call: `typesafe` or `openrouter`. |
| 123 | const PROVIDER_VAR: &str = "SUPERFAST_PROVIDER"; |
| 124 | /// Optional TypeSafe-route base URL (`/systemone` is appended). |
| 125 | const BASE_URL_VAR: &str = "SUPERFAST_BASE_URL"; |
| 126 | /// Decision model id sent in the request body. |
| 127 | const MODEL_VAR: &str = "SUPERFAST_MODEL"; |
| 128 | /// Per-call deadline in milliseconds. |
| 129 | const TIMEOUT_VAR: &str = "SUPERFAST_TIMEOUT_MS"; |
| 130 | |
| 131 | const DEFAULT_TIMEOUT_MS: u64 = 150; |
| 132 | const MAX_TIMEOUT_MS: u64 = 10_000; |
| 133 | /// Characters of the latest user message sent as decision state. |
| 134 | const MAX_STATE_CHARS: usize = 4_000; |
| 135 | |
| 136 | /// Conservative routing recommendation derived from a turn's answers. Only a |
| 137 | /// decisive set of numbers produces a fast route; anything else is `Unknown`, |
| 138 | /// which means "fall back to the full model exactly as today". |
| 139 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 140 | pub(crate) enum Route { |
| 141 | NeedsTool, |
| 142 | AnswerFromContext, |
| 143 | PlainChat, |
| 144 | Unknown, |
| 145 | } |
| 146 | |
| 147 | impl Route { |
| 148 | fn as_str(self) -> &'static str { |
| 149 | match self { |
| 150 | Route::NeedsTool => "needs_tool", |
| 151 | Route::AnswerFromContext => "answer_from_context", |
| 152 | Route::PlainChat => "plain_chat", |
| 153 | Route::Unknown => "unknown", |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | /// Everything one shadow evaluation can end in. Bounded by construction: a |
| 159 | /// route or a non-secret failure class, plus the measured latency. Provider |
| 160 | /// bodies and prompt text never enter this type. |
| 161 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 162 | pub(crate) enum ShadowOutcome { |
| 163 | /// The decision model answered; `route` is the derived recommendation. |
| 164 | Recommendation { route: Route, latency_ms: u64 }, |
| 165 | /// Fail open: nothing reached the model request. `NotRunnable` means the |
| 166 | /// route could not be built (no key, bad URL) and nothing was sent. |
| 167 | Failed { |
| 168 | failure: AutoRouterFailure, |
| 169 | latency_ms: u64, |
| 170 | }, |
| 171 | } |
| 172 | |
| 173 | /// The route an enabled gate calls, resolved from the environment. |
| 174 | #[derive(Debug, Clone, PartialEq, Eq)] |
| 175 | pub(crate) struct ShadowSettings { |
| 176 | route: DecisionRouterRoute, |
| 177 | base_url: Option<String>, |
| 178 | model: String, |
| 179 | timeout: Duration, |
| 180 | } |
| 181 | |
| 182 | impl ShadowSettings { |
| 183 | /// `None` when the gate is off; `Some(Err)` when it is on but |
| 184 | /// misconfigured (the message names the variable to fix). |
| 185 | fn from_env() -> Option<Result<Self, String>> { |
| 186 | Self::from_lookup(|name| std::env::var(name).ok()) |
| 187 | } |
| 188 | |
| 189 | fn from_lookup(lookup: impl Fn(&str) -> Option<String>) -> Option<Result<Self, String>> { |
| 190 | let value = |name: &str| { |
| 191 | lookup(name) |
| 192 | .map(|value| value.trim().to_string()) |
| 193 | .filter(|value| !value.is_empty()) |
| 194 | }; |
| 195 | let enabled = value(ENABLED_VAR).is_some_and(|flag| { |
| 196 | matches!( |
| 197 | flag.to_ascii_lowercase().as_str(), |
| 198 | "1" | "true" | "yes" | "on" |
| 199 | ) |
| 200 | }); |
| 201 | enabled.then(|| Self::parse(&value)) |
| 202 | } |
| 203 | |
| 204 | fn parse(value: &impl Fn(&str) -> Option<String>) -> Result<Self, String> { |
| 205 | let provider = value(PROVIDER_VAR).ok_or_else(|| { |
| 206 | format!( |
| 207 | "{ENABLED_VAR} is set but {PROVIDER_VAR} is not; set it to typesafe or openrouter" |
| 208 | ) |
| 209 | })?; |
| 210 | let route = DecisionRouterRoute::parse(&provider).ok_or_else(|| { |
| 211 | format!( |
| 212 | "{PROVIDER_VAR}={provider:?} is not a decision route; use typesafe or openrouter" |
| 213 | ) |
| 214 | })?; |
| 215 | let timeout_ms = match value(TIMEOUT_VAR) { |
| 216 | None => DEFAULT_TIMEOUT_MS, |
| 217 | Some(raw) => raw |
| 218 | .parse::<u64>() |
| 219 | .ok() |
| 220 | .filter(|ms| (1..=MAX_TIMEOUT_MS).contains(ms)) |
| 221 | .ok_or_else(|| { |
| 222 | format!("{TIMEOUT_VAR}={raw:?} must be 1..={MAX_TIMEOUT_MS} milliseconds") |
| 223 | })?, |
| 224 | }; |
| 225 | let model = value(MODEL_VAR).unwrap_or_else(|| { |
| 226 | match route { |
| 227 | DecisionRouterRoute::Typesafe => "jev-latest", |
| 228 | DecisionRouterRoute::Openrouter => "~typesafe/jev-latest", |
| 229 | } |
| 230 | .to_string() |
| 231 | }); |
| 232 | Ok(Self { |
| 233 | route, |
| 234 | base_url: value(BASE_URL_VAR), |
| 235 | model, |
| 236 | timeout: Duration::from_millis(timeout_ms), |
| 237 | }) |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | /// Text of the last user message, or `None` when there is none or it is blank. |
| 242 | fn last_user_text(messages: &[Message]) -> Option<String> { |
| 243 | let message = messages.iter().rev().find(|m| m.role == Role::User)?; |
| 244 | let text = message |
| 245 | .content |
| 246 | .iter() |
| 247 | .filter_map(|block| match block { |
| 248 | ContentBlock::Text { text, .. } => Some(text.as_str()), |
| 249 | _ => None, |
| 250 | }) |
| 251 | .collect::<Vec<_>>() |
| 252 | .join("\n"); |
| 253 | let trimmed = text.trim(); |
| 254 | (!trimmed.is_empty()).then(|| trimmed.to_string()) |
| 255 | } |
| 256 | |
| 257 | /// Fire the shadow gate for a turn's first model request. Returns at once: |
| 258 | /// the detached evaluation uses the turn's cancellation and accounting owner. No task is started |
| 259 | /// (and `None` is returned) when the gate is off or misconfigured, when there |
| 260 | /// is no user text, or when no Tokio runtime is present. The handle exists |
| 261 | /// for tests; the turn loop drops it. |
| 262 | pub(crate) fn spawn_shadow_gate( |
| 263 | config: &Config, |
| 264 | messages: &[Message], |
| 265 | runtime_owner: Option<&str>, |
| 266 | cancel_token: &CancellationToken, |
| 267 | ) -> Option<tokio::task::JoinHandle<ShadowOutcome>> { |
| 268 | let settings = match ShadowSettings::from_env()? { |
| 269 | Ok(settings) => settings, |
| 270 | Err(message) => { |
| 271 | tracing::warn!(target: "superfast", "decision gate (shadow) not run: {message}"); |
| 272 | return None; |
| 273 | } |
| 274 | }; |
| 275 | let latest_request = last_user_text(messages)?; |
| 276 | let runtime = tokio::runtime::Handle::try_current().ok()?; |
| 277 | let config = config.clone(); |
| 278 | // Capture before detaching; the next session/turn must never acquire it. |
| 279 | let usage_context = ShadowUsageContext::capture(runtime_owner); |
| 280 | let cancel_token = cancel_token.clone(); |
| 281 | Some(runtime.spawn(async move { |
| 282 | let outcome = evaluate( |
| 283 | &config, |
| 284 | &settings, |
| 285 | &latest_request, |
| 286 | &usage_context, |
| 287 | &cancel_token, |
| 288 | ) |
| 289 | .await; |
| 290 | log_outcome(outcome); |
| 291 | outcome |
| 292 | })) |
| 293 | } |
| 294 | |
| 295 | fn log_outcome(outcome: ShadowOutcome) { |
| 296 | match outcome { |
| 297 | ShadowOutcome::Recommendation { route, latency_ms } => tracing::info!( |
| 298 | target: "superfast", |
| 299 | route = route.as_str(), |
| 300 | latency_ms, |
| 301 | "decision gate (shadow) recommendation" |
| 302 | ), |
| 303 | ShadowOutcome::Failed { |
| 304 | failure: AutoRouterFailure::NotRunnable, |
| 305 | .. |
| 306 | } => tracing::warn!( |
| 307 | target: "superfast", |
| 308 | "decision gate (shadow) not run: route not runnable (check the {PROVIDER_VAR} key and {BASE_URL_VAR})" |
| 309 | ), |
| 310 | ShadowOutcome::Failed { |
| 311 | failure, |
| 312 | latency_ms, |
| 313 | } => tracing::debug!( |
| 314 | target: "superfast", |
| 315 | failure = %failure.label(), |
| 316 | latency_ms, |
| 317 | "decision gate (shadow) no opinion (fail-open)" |
| 318 | ), |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /// One shadow evaluation over the existing System One transport. |
| 323 | async fn evaluate( |
| 324 | config: &Config, |
| 325 | settings: &ShadowSettings, |
| 326 | latest_request: &str, |
| 327 | usage_context: &ShadowUsageContext, |
| 328 | cancel_token: &CancellationToken, |
| 329 | ) -> ShadowOutcome { |
| 330 | if cancel_token.is_cancelled() { |
| 331 | return ShadowOutcome::Failed { |
| 332 | failure: AutoRouterFailure::Cancelled, |
| 333 | latency_ms: 0, |
| 334 | }; |
| 335 | } |
| 336 | // Client construction resolves keys (environment, secret store), so it |
| 337 | // runs off the async worker (#6149). |
| 338 | let built = { |
| 339 | let config = config.clone(); |
| 340 | let route = settings.route; |
| 341 | let base_url = settings.base_url.clone(); |
| 342 | #[cfg(test)] |
| 343 | let ticket = crate::test_support::env_scope_ticket(); |
| 344 | tokio::task::spawn_blocking(move || { |
| 345 | #[cfg(test)] |
| 346 | let _membership = crate::test_support::join_env_scope(ticket); |
| 347 | CodewhaleClient::for_decision_route(&config, route, base_url.as_deref()) |
| 348 | }) |
| 349 | .await |
| 350 | }; |
| 351 | let Ok(Ok(client)) = built else { |
| 352 | return ShadowOutcome::Failed { |
| 353 | failure: AutoRouterFailure::NotRunnable, |
| 354 | latency_ms: 0, |
| 355 | }; |
| 356 | }; |
| 357 | let body = decision_body(&client, &settings.model, latest_request); |
| 358 | let request_route = client.effective_route_envelope(&settings.model, chrono::Utc::now()); |
| 359 | let dispatched = AtomicBool::new(false); |
| 360 | let started = Instant::now(); |
| 361 | let answer = tokio::select! { |
| 362 | biased; |
| 363 | () = cancel_token.cancelled() => Err(AutoRouterFailure::Cancelled), |
| 364 | result = tokio::time::timeout(settings.timeout, client.system_one_decide(&body, &dispatched)) => { |
| 365 | result.unwrap_or(Err(AutoRouterFailure::Timeout)) |
| 366 | } |
| 367 | }; |
| 368 | let latency_ms = u64::try_from(started.elapsed().as_millis()).unwrap_or(u64::MAX); |
| 369 | match answer { |
| 370 | Err(failure) => { |
| 371 | if dispatched.load(Ordering::Acquire) { |
| 372 | usage_context |
| 373 | .report(crate::cost_status::RuntimeUsageBatch { |
| 374 | decisions: Vec::new(), |
| 375 | drop_records: vec![crate::cost_status::RuntimeUsageDropRecord { |
| 376 | reason: crate::cost_status::RuntimeUsageMissingReason::default(), |
| 377 | source_id: auto_route_usage_source_id( |
| 378 | &request_route, |
| 379 | "shadow:dispatched-unreceipted", |
| 380 | ), |
| 381 | route: request_route.sanitized_for_persistence(), |
| 382 | }], |
| 383 | dropped_records: 1, |
| 384 | ..Default::default() |
| 385 | }) |
| 386 | .await; |
| 387 | } |
| 388 | ShadowOutcome::Failed { |
| 389 | failure, |
| 390 | latency_ms, |
| 391 | } |
| 392 | } |
| 393 | Ok(response) => { |
| 394 | // Billing evidence settles even when strict answer validation |
| 395 | // prevents the policy from producing a recommendation. |
| 396 | let mut batch = decision_usage_batch(&request_route, &response); |
| 397 | let intent = crate::model_routing::validated_choice( |
| 398 | response.answers.get("intent"), |
| 399 | &["code_change", "code_question", "command", "chat", "other"], |
| 400 | ); |
| 401 | batch |
| 402 | .decisions |
| 403 | .push(crate::cost_status::RuntimeDecisionReceipt { |
| 404 | source_id: auto_route_usage_source_id( |
| 405 | &request_route, |
| 406 | response.id.as_deref().unwrap_or("systemone"), |
| 407 | ), |
| 408 | route: request_route.sanitized_for_persistence(), |
| 409 | usage: response.usage.as_ref().map(|u| codewhale_models::Usage { |
| 410 | input_tokens: u.input_tokens, |
| 411 | output_tokens: u.output_tokens, |
| 412 | ..Default::default() |
| 413 | }), |
| 414 | usage_complete: response |
| 415 | .usage |
| 416 | .as_ref() |
| 417 | .is_some_and(|u| u.complete && (u.input_tokens > 0 || u.output_tokens > 0)), |
| 418 | shadow: true, |
| 419 | valid_answers: response.answers_validated != Some(false), |
| 420 | evidence: crate::model_routing::AutoRouteDecisionEvidence { |
| 421 | choice: intent |
| 422 | .as_ref() |
| 423 | .map_or_else(|| "invalid".to_string(), |v| v.choice.clone()), |
| 424 | probabilities_bp: intent |
| 425 | .as_ref() |
| 426 | .map_or_else(Default::default, |v| v.probabilities_bp.clone()), |
| 427 | confidence_bp: intent.as_ref().map_or(0, |v| v.confidence_bp), |
| 428 | min_confidence_bp: 5_000, |
| 429 | cost_saving_kept_fast: false, |
| 430 | thinking: None, |
| 431 | provider_reported_cost_usd: response |
| 432 | .usage |
| 433 | .as_ref() |
| 434 | .and_then(|u| u.reported_cost()), |
| 435 | latency_ms, |
| 436 | response_model: response.model.clone(), |
| 437 | }, |
| 438 | }); |
| 439 | usage_context.report(batch).await; |
| 440 | if response.answers_validated == Some(false) { |
| 441 | ShadowOutcome::Failed { |
| 442 | failure: AutoRouterFailure::InvalidAnswer, |
| 443 | latency_ms, |
| 444 | } |
| 445 | } else { |
| 446 | ShadowOutcome::Recommendation { |
| 447 | route: derive_route(&response), |
| 448 | latency_ms, |
| 449 | } |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | /// The System One request: two `noul` questions and one `choice` over the |
| 456 | /// redacted, bounded latest request. |
| 457 | fn decision_body(client: &CodewhaleClient, model: &str, latest_request: &str) -> Value { |
| 458 | json!({ |
| 459 | "model": model, |
| 460 | "state": { |
| 461 | "latest_request": client |
| 462 | .redact_model_bound_text(&truncate_for_auto_router(latest_request, MAX_STATE_CHARS)), |
| 463 | }, |
| 464 | "questions": { |
| 465 | "needs_tool": { |
| 466 | "type": "noul", |
| 467 | "instructions": "Does answering this request require taking an action with a tool (reading, writing, running, searching), rather than replying from what is already known?" |
| 468 | }, |
| 469 | "answerable_from_context": { |
| 470 | "type": "noul", |
| 471 | "instructions": "Can this request be answered from information already present in the conversation, without any new investigation?" |
| 472 | }, |
| 473 | "intent": { |
| 474 | "type": "choice", |
| 475 | "instructions": "Classify the primary intent of the user request.", |
| 476 | "criteria": { |
| 477 | "code_change": "Create, edit, or delete code or files.", |
| 478 | "code_question": "Explain or reason about code without changing it.", |
| 479 | "command": "Run a command or operation.", |
| 480 | "chat": "Casual conversation or a question needing no tools.", |
| 481 | "other": "None of the above." |
| 482 | } |
| 483 | } |
| 484 | } |
| 485 | }) |
| 486 | } |
| 487 | |
| 488 | /// A finite probability in [0, 1], or `None` ("no evidence"). |
| 489 | fn unit_interval(value: Option<f64>) -> Option<f64> { |
| 490 | value.filter(|value| value.is_finite() && (0.0..=1.0).contains(value)) |
| 491 | } |
| 492 | |
| 493 | /// Read a `noul` answer only when it is typed as one and its value is a real |
| 494 | /// probability. Anything else (absent, wrong type, out of range) is "no |
| 495 | /// evidence", so a mis-scaled or missing answer can never produce a decisive |
| 496 | /// fast route. |
| 497 | fn read_noul(response: &SystemOneResponse, key: &str) -> Option<f64> { |
| 498 | let answer = response.answers.get(key)?; |
| 499 | (answer.kind == "noul") |
| 500 | .then_some(answer.noul) |
| 501 | .and_then(unit_interval) |
| 502 | } |
| 503 | |
| 504 | /// Derive a conservative route. The gate only recommends a fast route when the |
| 505 | /// relevant numbers are decisive; otherwise it says `Unknown` so the caller |
| 506 | /// falls back to the normal path. |
| 507 | fn derive_route(response: &SystemOneResponse) -> Route { |
| 508 | let needs_tool = read_noul(response, "needs_tool"); |
| 509 | let from_context = read_noul(response, "answerable_from_context"); |
| 510 | |
| 511 | // Decisive "needs a tool" wins first — the harness must not skip work. |
| 512 | if needs_tool.is_some_and(|nt| nt >= 0.85) { |
| 513 | return Route::NeedsTool; |
| 514 | } |
| 515 | |
| 516 | // Strongly answerable from context, with a present and low tool-need signal. |
| 517 | if from_context.is_some_and(|fc| fc >= 0.85) && needs_tool.is_some_and(|nt| nt <= 0.3) { |
| 518 | return Route::AnswerFromContext; |
| 519 | } |
| 520 | |
| 521 | // Clearly chat, with a calibrated intent and a present, low tool-need signal. |
| 522 | let intent_is_calibrated_chat = crate::model_routing::validated_choice( |
| 523 | response.answers.get("intent"), |
| 524 | &["code_change", "code_question", "command", "chat", "other"], |
| 525 | ) |
| 526 | .is_some_and(|intent| intent.choice == "chat" && intent.confidence_bp >= 5_000); |
| 527 | if intent_is_calibrated_chat && needs_tool.is_some_and(|nt| nt <= 0.2) { |
| 528 | return Route::PlainChat; |
| 529 | } |
| 530 | |
| 531 | Route::Unknown |
| 532 | } |
| 533 | |
| 534 | #[cfg(test)] |
| 535 | mod tests { |
| 536 | use super::*; |
| 537 | use wiremock::matchers::{header, method, path}; |
| 538 | use wiremock::{Mock, MockServer, Request, ResponseTemplate}; |
| 539 | |
| 540 | const TYPESAFE_TEST_KEY: &str = "sf-typesafe-test-key-0123456789"; |
| 541 | |
| 542 | /// Fields drop in declaration order: restore the environment before the |
| 543 | /// lock is released, or another test observes our overrides. |
| 544 | struct Env { |
| 545 | _guards: Vec<crate::test_support::EnvVarGuard>, |
| 546 | _home: tempfile::TempDir, |
| 547 | _lock: crate::test_support::TestEnvLock, |
| 548 | } |
| 549 | |
| 550 | /// A hermetic home with a TypeSafe key. `gate` switches the gate on |
| 551 | /// against the TypeSafe route at that server with that deadline (ms). |
| 552 | fn hermetic_env(gate: Option<(&MockServer, u64)>) -> Env { |
| 553 | use crate::test_support::EnvVarGuard; |
| 554 | let lock = crate::test_support::lock_test_env(); |
| 555 | let home = tempfile::tempdir().expect("test home"); |
| 556 | let mut guards = vec![ |
| 557 | EnvVarGuard::set("CODEWHALE_HOME", home.path()), |
| 558 | EnvVarGuard::remove("OPENROUTER_API_KEY"), |
| 559 | EnvVarGuard::set("TYPESAFE_API_KEY", TYPESAFE_TEST_KEY), |
| 560 | EnvVarGuard::remove(MODEL_VAR), |
| 561 | ]; |
| 562 | match gate { |
| 563 | Some((server, timeout_ms)) => guards.extend([ |
| 564 | EnvVarGuard::set(ENABLED_VAR, "1"), |
| 565 | EnvVarGuard::set(PROVIDER_VAR, "typesafe"), |
| 566 | EnvVarGuard::set(BASE_URL_VAR, format!("{}/v1", server.uri())), |
| 567 | EnvVarGuard::set(TIMEOUT_VAR, timeout_ms.to_string()), |
| 568 | ]), |
| 569 | None => guards.extend([ |
| 570 | EnvVarGuard::remove(ENABLED_VAR), |
| 571 | EnvVarGuard::remove(PROVIDER_VAR), |
| 572 | EnvVarGuard::remove(BASE_URL_VAR), |
| 573 | EnvVarGuard::remove(TIMEOUT_VAR), |
| 574 | ]), |
| 575 | } |
| 576 | Env { |
| 577 | _guards: guards, |
| 578 | _home: home, |
| 579 | _lock: lock, |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | /// A chat provider the client can be built from; the gate never calls it. |
| 584 | fn config() -> Config { |
| 585 | Config { |
| 586 | provider: Some("deepseek".to_string()), |
| 587 | default_text_model: Some("deepseek-v4-pro".to_string()), |
| 588 | providers: Some(crate::config::ProvidersConfig { |
| 589 | deepseek: crate::config::ProviderConfig { |
| 590 | api_key: Some("ds-test-key".to_string()), |
| 591 | ..Default::default() |
| 592 | }, |
| 593 | ..Default::default() |
| 594 | }), |
| 595 | ..Default::default() |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | fn text(role: Role, text: &str) -> Message { |
| 600 | Message { |
| 601 | role, |
| 602 | content: vec![ContentBlock::Text { |
| 603 | text: text.to_string(), |
| 604 | cache_control: None, |
| 605 | }], |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | fn turn(latest: &str) -> Vec<Message> { |
| 610 | vec![ |
| 611 | text(Role::User, "earlier question"), |
| 612 | text(Role::Assistant, "earlier answer"), |
| 613 | text(Role::User, latest), |
| 614 | ] |
| 615 | } |
| 616 | |
| 617 | fn noul_body(needs_tool: f64, from_context: f64) -> Value { |
| 618 | json!({ |
| 619 | "id": "sf-1", |
| 620 | "model": "jev-latest", |
| 621 | "usage": { "input_tokens": 121, "output_tokens": 8 }, |
| 622 | "answers": { |
| 623 | "needs_tool": { "type": "noul", "noul": needs_tool }, |
| 624 | "answerable_from_context": { "type": "noul", "noul": from_context }, |
| 625 | "intent": { |
| 626 | "type": "choice", |
| 627 | "choice": "code_change", |
| 628 | "probabilities": { |
| 629 | "code_change": 0.9, "code_question": 0.04, "command": 0.03, |
| 630 | "chat": 0.02, "other": 0.01 |
| 631 | }, |
| 632 | "confidence": 0.8 |
| 633 | } |
| 634 | } |
| 635 | }) |
| 636 | } |
| 637 | |
| 638 | async fn requests(server: &MockServer) -> Vec<Request> { |
| 639 | server.received_requests().await.expect("recorded") |
| 640 | } |
| 641 | |
| 642 | async fn run(messages: &[Message]) -> Option<ShadowOutcome> { |
| 643 | let handle = spawn_shadow_gate(&config(), messages, None, &CancellationToken::new())?; |
| 644 | Some(handle.await.expect("shadow task")) |
| 645 | } |
| 646 | |
| 647 | #[tokio::test] |
| 648 | async fn disabled_gate_sends_nothing_and_starts_no_task() { |
| 649 | let server = MockServer::start().await; |
| 650 | Mock::given(method("POST")) |
| 651 | .respond_with(ResponseTemplate::new(200).set_body_json(noul_body(0.9, 0.1))) |
| 652 | .mount(&server) |
| 653 | .await; |
| 654 | let _env = hermetic_env(None); |
| 655 | |
| 656 | assert_eq!(run(&turn("Refactor the parser")).await, None); |
| 657 | assert!( |
| 658 | requests(&server).await.is_empty(), |
| 659 | "a disabled gate must not call" |
| 660 | ); |
| 661 | } |
| 662 | |
| 663 | #[tokio::test] |
| 664 | async fn enabled_gate_posts_one_redacted_bounded_decision_and_recommends() { |
| 665 | let server = MockServer::start().await; |
| 666 | Mock::given(method("POST")) |
| 667 | .and(path("/v1/systemone")) |
| 668 | .and(header( |
| 669 | "authorization", |
| 670 | format!("Bearer {TYPESAFE_TEST_KEY}").as_str(), |
| 671 | )) |
| 672 | .respond_with(ResponseTemplate::new(200).set_body_json(noul_body(0.93, 0.1))) |
| 673 | .expect(1) |
| 674 | .mount(&server) |
| 675 | .await; |
| 676 | let _env = hermetic_env(Some((&server, 2_000))); |
| 677 | |
| 678 | // The latest message echoes the key and is longer than the state cap. |
| 679 | let latest = format!( |
| 680 | "Fix the build. token={TYPESAFE_TEST_KEY} {}", |
| 681 | "x".repeat(6_000) |
| 682 | ); |
| 683 | let outcome = run(&turn(&latest)).await.expect("enabled gate runs"); |
| 684 | assert!( |
| 685 | matches!( |
| 686 | outcome, |
| 687 | ShadowOutcome::Recommendation { |
| 688 | route: Route::NeedsTool, |
| 689 | .. |
| 690 | } |
| 691 | ), |
| 692 | "{outcome:?}" |
| 693 | ); |
| 694 | |
| 695 | let requests = requests(&server).await; |
| 696 | assert_eq!(requests.len(), 1); |
| 697 | let raw = String::from_utf8(requests[0].body.clone()).expect("utf8 body"); |
| 698 | assert!( |
| 699 | !raw.contains(TYPESAFE_TEST_KEY), |
| 700 | "key leaked into decision state" |
| 701 | ); |
| 702 | assert!( |
| 703 | !raw.contains("earlier question"), |
| 704 | "only the latest message is sent" |
| 705 | ); |
| 706 | let body: Value = serde_json::from_str(&raw).expect("json body"); |
| 707 | assert_eq!(body["model"], "jev-latest"); |
| 708 | let state = body["state"]["latest_request"] |
| 709 | .as_str() |
| 710 | .expect("state text"); |
| 711 | assert!(state.starts_with("Fix the build.")); |
| 712 | assert!( |
| 713 | state.chars().count() <= MAX_STATE_CHARS + 3, |
| 714 | "state is bounded" |
| 715 | ); |
| 716 | let questions: Vec<&str> = body["questions"] |
| 717 | .as_object() |
| 718 | .expect("questions") |
| 719 | .keys() |
| 720 | .map(String::as_str) |
| 721 | .collect(); |
| 722 | assert_eq!( |
| 723 | questions, |
| 724 | ["needs_tool", "answerable_from_context", "intent"] |
| 725 | ); |
| 726 | } |
| 727 | |
| 728 | #[tokio::test] |
| 729 | async fn http_error_and_malformed_answers_fail_open_as_typed_classes() { |
| 730 | for (response, expected) in [ |
| 731 | ( |
| 732 | ResponseTemplate::new(500).set_body_string("upstream exploded: secret body"), |
| 733 | AutoRouterFailure::Http { status: 500 }, |
| 734 | ), |
| 735 | ( |
| 736 | ResponseTemplate::new(200).set_body_string("not json"), |
| 737 | AutoRouterFailure::InvalidAnswer, |
| 738 | ), |
| 739 | ] { |
| 740 | let server = MockServer::start().await; |
| 741 | Mock::given(method("POST")) |
| 742 | .and(path("/v1/systemone")) |
| 743 | .respond_with(response) |
| 744 | .expect(1) |
| 745 | .mount(&server) |
| 746 | .await; |
| 747 | let _env = hermetic_env(Some((&server, 2_000))); |
| 748 | |
| 749 | let outcome = run(&turn("Explain the diff")) |
| 750 | .await |
| 751 | .expect("enabled gate runs"); |
| 752 | assert!( |
| 753 | matches!(outcome, ShadowOutcome::Failed { failure, .. } if failure == expected), |
| 754 | "{outcome:?}" |
| 755 | ); |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | #[tokio::test] |
| 760 | async fn slow_endpoint_times_out_without_holding_up_the_caller() { |
| 761 | let server = MockServer::start().await; |
| 762 | Mock::given(method("POST")) |
| 763 | .and(path("/v1/systemone")) |
| 764 | .respond_with( |
| 765 | ResponseTemplate::new(200) |
| 766 | .set_body_json(noul_body(0.93, 0.1)) |
| 767 | .set_delay(Duration::from_secs(3)), |
| 768 | ) |
| 769 | .mount(&server) |
| 770 | .await; |
| 771 | let _env = hermetic_env(Some((&server, 100))); |
| 772 | |
| 773 | let started = Instant::now(); |
| 774 | let handle = spawn_shadow_gate( |
| 775 | &config(), |
| 776 | &turn("Run the tests"), |
| 777 | None, |
| 778 | &CancellationToken::new(), |
| 779 | ) |
| 780 | .expect("task"); |
| 781 | assert!( |
| 782 | started.elapsed() < Duration::from_millis(100), |
| 783 | "spawning must not wait on the decision call" |
| 784 | ); |
| 785 | let outcome = handle.await.expect("shadow task"); |
| 786 | assert!( |
| 787 | matches!( |
| 788 | outcome, |
| 789 | ShadowOutcome::Failed { |
| 790 | failure: AutoRouterFailure::Timeout, |
| 791 | .. |
| 792 | } |
| 793 | ), |
| 794 | "{outcome:?}" |
| 795 | ); |
| 796 | assert!( |
| 797 | started.elapsed() < Duration::from_secs(2), |
| 798 | "the deadline bounds the call" |
| 799 | ); |
| 800 | } |
| 801 | |
| 802 | #[tokio::test] |
| 803 | async fn no_op_and_unrunnable_turns_send_nothing() { |
| 804 | let server = MockServer::start().await; |
| 805 | Mock::given(method("POST")) |
| 806 | .respond_with(ResponseTemplate::new(200).set_body_json(noul_body(0.9, 0.1))) |
| 807 | .mount(&server) |
| 808 | .await; |
| 809 | let _env = hermetic_env(Some((&server, 2_000))); |
| 810 | |
| 811 | // No user text: no task. |
| 812 | assert_eq!(run(&[text(Role::Assistant, "only assistant")]).await, None); |
| 813 | assert_eq!(run(&turn(" ")).await, None); |
| 814 | |
| 815 | // No TypeSafe key: the route is not runnable and nothing is sent. |
| 816 | let _no_key = crate::test_support::EnvVarGuard::remove("TYPESAFE_API_KEY"); |
| 817 | let outcome = run(&turn("Refactor the parser")) |
| 818 | .await |
| 819 | .expect("enabled gate runs"); |
| 820 | assert_eq!( |
| 821 | outcome, |
| 822 | ShadowOutcome::Failed { |
| 823 | failure: AutoRouterFailure::NotRunnable, |
| 824 | latency_ms: 0, |
| 825 | } |
| 826 | ); |
| 827 | assert!(requests(&server).await.is_empty()); |
| 828 | } |
| 829 | |
| 830 | fn lookup(pairs: &'static [(&'static str, &'static str)]) -> impl Fn(&str) -> Option<String> { |
| 831 | move |name| { |
| 832 | pairs |
| 833 | .iter() |
| 834 | .find_map(|(key, value)| (*key == name).then(|| (*value).to_string())) |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | #[test] |
| 839 | fn settings_are_off_by_default_and_misconfiguration_is_named() { |
| 840 | assert_eq!(ShadowSettings::from_lookup(lookup(&[])), None); |
| 841 | assert_eq!( |
| 842 | ShadowSettings::from_lookup(lookup(&[(ENABLED_VAR, "0"), (PROVIDER_VAR, "typesafe")])), |
| 843 | None |
| 844 | ); |
| 845 | let missing = ShadowSettings::from_lookup(lookup(&[(ENABLED_VAR, "on")])) |
| 846 | .expect("enabled") |
| 847 | .expect_err("no provider"); |
| 848 | assert!(missing.contains(PROVIDER_VAR), "{missing}"); |
| 849 | let unknown = |
| 850 | ShadowSettings::from_lookup(lookup(&[(ENABLED_VAR, "1"), (PROVIDER_VAR, "deepseek")])) |
| 851 | .expect("enabled") |
| 852 | .expect_err("not a decision route"); |
| 853 | assert!(unknown.contains("deepseek"), "{unknown}"); |
| 854 | let timeout = ShadowSettings::from_lookup(lookup(&[ |
| 855 | (ENABLED_VAR, "1"), |
| 856 | (PROVIDER_VAR, "openrouter"), |
| 857 | (TIMEOUT_VAR, "0"), |
| 858 | ])) |
| 859 | .expect("enabled") |
| 860 | .expect_err("zero timeout"); |
| 861 | assert!(timeout.contains(TIMEOUT_VAR), "{timeout}"); |
| 862 | let settings = ShadowSettings::from_lookup(lookup(&[ |
| 863 | (ENABLED_VAR, "yes"), |
| 864 | (PROVIDER_VAR, "openrouter"), |
| 865 | ])) |
| 866 | .expect("enabled") |
| 867 | .expect("valid"); |
| 868 | assert_eq!(settings.route, DecisionRouterRoute::Openrouter); |
| 869 | assert_eq!(settings.model, "~typesafe/jev-latest"); |
| 870 | assert_eq!(settings.timeout, Duration::from_millis(DEFAULT_TIMEOUT_MS)); |
| 871 | assert_eq!(settings.base_url, None); |
| 872 | } |
| 873 | |
| 874 | fn response(answers: Value) -> SystemOneResponse { |
| 875 | serde_json::from_value(json!({ "answers": answers })).expect("response") |
| 876 | } |
| 877 | |
| 878 | #[test] |
| 879 | fn only_decisive_typed_answers_route_fast() { |
| 880 | let cases = [ |
| 881 | ( |
| 882 | json!({ "needs_tool": { "type": "noul", "noul": 0.9 } }), |
| 883 | Route::NeedsTool, |
| 884 | ), |
| 885 | ( |
| 886 | json!({ |
| 887 | "needs_tool": { "type": "noul", "noul": 0.1 }, |
| 888 | "answerable_from_context": { "type": "noul", "noul": 0.9 } |
| 889 | }), |
| 890 | Route::AnswerFromContext, |
| 891 | ), |
| 892 | ( |
| 893 | json!({ |
| 894 | "needs_tool": { "type": "noul", "noul": 0.05 }, |
| 895 | "intent": { "type": "choice", "choice": "chat", "confidence": 0.8, |
| 896 | "probabilities": { "chat": 0.9, "code_change": 0.04, "code_question": 0.03, "command": 0.02, "other": 0.01 } } |
| 897 | }), |
| 898 | Route::PlainChat, |
| 899 | ), |
| 900 | // Out of range, wrong type, or untyped answers are no evidence. |
| 901 | ( |
| 902 | json!({ |
| 903 | "needs_tool": { "type": "noul", "noul": 5.0 }, |
| 904 | "answerable_from_context": { "type": "choice", "noul": 0.95 } |
| 905 | }), |
| 906 | Route::Unknown, |
| 907 | ), |
| 908 | (json!({ "needs_tool": { "noul": 0.95 } }), Route::Unknown), |
| 909 | // Chat without a present, low tool-need signal is not decisive. |
| 910 | ( |
| 911 | json!({ "intent": { "type": "choice", "choice": "chat", "confidence": 0.9 } }), |
| 912 | Route::Unknown, |
| 913 | ), |
| 914 | (json!({}), Route::Unknown), |
| 915 | ]; |
| 916 | for (answers, expected) in cases { |
| 917 | assert_eq!( |
| 918 | derive_route(&response(answers.clone())), |
| 919 | expected, |
| 920 | "{answers}" |
| 921 | ); |
| 922 | } |
| 923 | } |
| 924 | |
| 925 | #[test] |
| 926 | fn last_user_text_picks_the_latest_user_text() { |
| 927 | assert_eq!( |
| 928 | last_user_text(&turn(" latest question ")).as_deref(), |
| 929 | Some("latest question") |
| 930 | ); |
| 931 | assert_eq!( |
| 932 | last_user_text(&[text(Role::Assistant, "only assistant")]), |
| 933 | None |
| 934 | ); |
| 935 | } |
| 936 | #[tokio::test] |
| 937 | async fn cancelled_before_dispatch_sends_nothing() { |
| 938 | let server = MockServer::start().await; |
| 939 | let _env = hermetic_env(Some((&server, 2_000))); |
| 940 | let cancel = CancellationToken::new(); |
| 941 | cancel.cancel(); |
| 942 | let outcome = spawn_shadow_gate(&config(), &turn("hi"), None, &cancel) |
| 943 | .expect("task") |
| 944 | .await |
| 945 | .expect("joined"); |
| 946 | assert!(matches!( |
| 947 | outcome, |
| 948 | ShadowOutcome::Failed { |
| 949 | failure: AutoRouterFailure::Cancelled, |
| 950 | .. |
| 951 | } |
| 952 | )); |
| 953 | assert!(requests(&server).await.is_empty()); |
| 954 | } |
| 955 | |
| 956 | #[tokio::test] |
| 957 | async fn cancelled_dispatched_call_records_gap_for_its_owner() { |
| 958 | let server = MockServer::start().await; |
| 959 | Mock::given(method("POST")) |
| 960 | .and(path("/v1/systemone")) |
| 961 | .respond_with( |
| 962 | ResponseTemplate::new(200) |
| 963 | .set_delay(Duration::from_secs(2)) |
| 964 | .set_body_json(noul_body(0.9, 0.1)), |
| 965 | ) |
| 966 | .expect(1) |
| 967 | .mount(&server) |
| 968 | .await; |
| 969 | let _env = hermetic_env(Some((&server, 3_000))); |
| 970 | let owner = "superfast-cancel-owner"; |
| 971 | let dropped = std::sync::Arc::new(std::sync::Mutex::new(Vec::new())); |
| 972 | let sink = dropped.clone(); |
| 973 | crate::cost_status::register_runtime_usage_sink_with_drop( |
| 974 | owner, |
| 975 | std::sync::Arc::new(|_| true), |
| 976 | Some(std::sync::Arc::new(move |record| { |
| 977 | sink.lock().expect("drop sink").push(record); |
| 978 | true |
| 979 | })), |
| 980 | ); |
| 981 | |
| 982 | let cancel = CancellationToken::new(); |
| 983 | let handle = spawn_shadow_gate(&config(), &turn("hi"), Some(owner), &cancel).expect("task"); |
| 984 | tokio::time::timeout(Duration::from_secs(1), async { |
| 985 | while requests(&server).await.is_empty() { |
| 986 | tokio::task::yield_now().await; |
| 987 | } |
| 988 | }) |
| 989 | .await |
| 990 | .expect("request admitted"); |
| 991 | let start = Instant::now(); |
| 992 | cancel.cancel(); |
| 993 | let outcome = tokio::time::timeout(Duration::from_millis(300), handle) |
| 994 | .await |
| 995 | .expect("cancellation stops the pending request") |
| 996 | .expect("joined"); |
| 997 | assert!(matches!( |
| 998 | outcome, |
| 999 | ShadowOutcome::Failed { |
| 1000 | failure: AutoRouterFailure::Cancelled, |
| 1001 | .. |
| 1002 | } |
| 1003 | )); |
| 1004 | assert!(start.elapsed() < Duration::from_millis(300)); |
| 1005 | let records = dropped.lock().expect("drop records"); |
| 1006 | assert_eq!(records.len(), 1); |
| 1007 | assert_eq!(records[0].route.provider_identity, "typesafe"); |
| 1008 | let batch = crate::cost_status::take_runtime_usage(owner); |
| 1009 | assert!(batch.records.is_empty()); |
| 1010 | assert!(batch.drop_records.is_empty()); |
| 1011 | crate::cost_status::finish_runtime_usage_owner(owner); |
| 1012 | } |
| 1013 | |
| 1014 | #[tokio::test] |
| 1015 | async fn owner_lease_retains_late_usage_and_invalid_answer_cost() { |
| 1016 | let server = MockServer::start().await; |
| 1017 | let mut body = noul_body(0.9, 0.1); |
| 1018 | body["answers"]["needs_tool"]["noul"] = 2.0.into(); |
| 1019 | body["usage"]["cost"] = 0.000012054.into(); |
| 1020 | Mock::given(method("POST")) |
| 1021 | .and(path("/v1/systemone")) |
| 1022 | .respond_with( |
| 1023 | ResponseTemplate::new(200) |
| 1024 | .set_delay(Duration::from_millis(100)) |
| 1025 | .set_body_json(body), |
| 1026 | ) |
| 1027 | .expect(1) |
| 1028 | .mount(&server) |
| 1029 | .await; |
| 1030 | let _env = hermetic_env(Some((&server, 2_000))); |
| 1031 | let owner = "superfast-late-owner"; |
| 1032 | let observed = std::sync::Arc::new(std::sync::Mutex::new(Vec::new())); |
| 1033 | let sink = observed.clone(); |
| 1034 | crate::cost_status::register_runtime_usage_sink( |
| 1035 | owner, |
| 1036 | std::sync::Arc::new(move |record| { |
| 1037 | sink.lock().expect("sink").push(record); |
| 1038 | true |
| 1039 | }), |
| 1040 | ); |
| 1041 | let decisions = std::sync::Arc::new(std::sync::Mutex::new(Vec::new())); |
| 1042 | let decision_sink = decisions.clone(); |
| 1043 | crate::cost_status::register_runtime_decision_sink( |
| 1044 | owner, |
| 1045 | std::sync::Arc::new(move |receipt| { |
| 1046 | decision_sink.lock().expect("decision sink").push(receipt); |
| 1047 | true |
| 1048 | }), |
| 1049 | ); |
| 1050 | let handle = spawn_shadow_gate( |
| 1051 | &config(), |
| 1052 | &turn("hi"), |
| 1053 | Some(owner), |
| 1054 | &CancellationToken::new(), |
| 1055 | ) |
| 1056 | .expect("task"); |
| 1057 | crate::cost_status::finish_runtime_usage_owner(owner); |
| 1058 | let outcome = handle.await.expect("joined"); |
| 1059 | assert!(matches!( |
| 1060 | outcome, |
| 1061 | ShadowOutcome::Failed { |
| 1062 | failure: AutoRouterFailure::InvalidAnswer, |
| 1063 | .. |
| 1064 | } |
| 1065 | )); |
| 1066 | let records = observed.lock().expect("records"); |
| 1067 | assert_eq!( |
| 1068 | records.len(), |
| 1069 | 1, |
| 1070 | "retired origin still owns its late response" |
| 1071 | ); |
| 1072 | assert_eq!(records[0].usage.usage.input_tokens, 121); |
| 1073 | assert_eq!(records[0].usage.usage.output_tokens, 8); |
| 1074 | assert_eq!(records[0].usage.route.provider_identity, "typesafe"); |
| 1075 | assert_eq!( |
| 1076 | records[0].usage.route.billing_mode, |
| 1077 | crate::cost_status::RouteBillingMode::Unknown |
| 1078 | ); |
| 1079 | let receipts = decisions.lock().expect("decision receipts"); |
| 1080 | assert_eq!(receipts.len(), 1); |
| 1081 | assert!(!receipts[0].valid_answers); |
| 1082 | assert!(receipts[0].shadow); |
| 1083 | assert_eq!( |
| 1084 | receipts[0].evidence.provider_reported_cost_usd.as_deref(), |
| 1085 | Some("0.000012054") |
| 1086 | ); |
| 1087 | assert!( |
| 1088 | crate::cost_status::take_runtime_usage(owner) |
| 1089 | .records |
| 1090 | .is_empty(), |
| 1091 | "settled response must not enter fallback journal" |
| 1092 | ); |
| 1093 | } |
| 1094 | |
| 1095 | #[tokio::test] |
| 1096 | async fn oversized_decision_body_fails_closed_with_dispatched_coverage_gap() { |
| 1097 | let server = MockServer::start().await; |
| 1098 | Mock::given(method("POST")) |
| 1099 | .and(path("/v1/systemone")) |
| 1100 | .respond_with(ResponseTemplate::new(200).set_body_string("x".repeat(256 * 1024 + 1))) |
| 1101 | .expect(1) |
| 1102 | .mount(&server) |
| 1103 | .await; |
| 1104 | let _env = hermetic_env(Some((&server, 2_000))); |
| 1105 | let owner = "superfast-oversized-owner"; |
| 1106 | let drops = std::sync::Arc::new(std::sync::Mutex::new(Vec::new())); |
| 1107 | let sink = drops.clone(); |
| 1108 | crate::cost_status::register_runtime_usage_sink_with_drop( |
| 1109 | owner, |
| 1110 | std::sync::Arc::new(|_| true), |
| 1111 | Some(std::sync::Arc::new(move |record| { |
| 1112 | sink.lock().expect("drops").push(record); |
| 1113 | true |
| 1114 | })), |
| 1115 | ); |
| 1116 | let handle = spawn_shadow_gate( |
| 1117 | &config(), |
| 1118 | &turn("hi"), |
| 1119 | Some(owner), |
| 1120 | &CancellationToken::new(), |
| 1121 | ) |
| 1122 | .expect("task"); |
| 1123 | assert!(matches!( |
| 1124 | handle.await.expect("joined"), |
| 1125 | ShadowOutcome::Failed { |
| 1126 | failure: AutoRouterFailure::InvalidAnswer, |
| 1127 | .. |
| 1128 | } |
| 1129 | )); |
| 1130 | assert_eq!(drops.lock().expect("drop receipts").len(), 1); |
| 1131 | crate::cost_status::finish_runtime_usage_owner(owner); |
| 1132 | } |
| 1133 | #[tokio::test] |
| 1134 | async fn empty_origin_and_receipt_only_batch_use_the_existing_interactive_pool() { |
| 1135 | let _scope = crate::cost_status::test_scope(); |
| 1136 | let context = ShadowUsageContext::capture(Some(" ")); |
| 1137 | assert!(context.runtime_owner.is_none()); |
| 1138 | context |
| 1139 | .report(crate::cost_status::RuntimeUsageBatch { |
| 1140 | decisions: vec![crate::cost_status::decision_receipt_fixture( |
| 1141 | "ownerless-fixture", |
| 1142 | )], |
| 1143 | ..Default::default() |
| 1144 | }) |
| 1145 | .await; |
| 1146 | let projected = crate::cost_status::drain(); |
| 1147 | assert!( |
| 1148 | projected |
| 1149 | .route_receipts |
| 1150 | .iter() |
| 1151 | .any(|r| r.contains("0.000012054")) |
| 1152 | ); |
| 1153 | assert_eq!( |
| 1154 | projected.unpriced_turns, 0, |
| 1155 | "diagnostic receipts do not mint a new charge" |
| 1156 | ); |
| 1157 | assert!( |
| 1158 | crate::cost_status::take_runtime_usage(" ") |
| 1159 | .decisions |
| 1160 | .is_empty() |
| 1161 | ); |
| 1162 | } |
| 1163 | } |
| 1164 |