fix(lib): make the dispatch permit the charge, and close the uncounted send paths (#4546) - #4634
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…d send paths (#4546) Part of the stacked delivery closing the remaining OCX-4546 cost-guard scope. Verification posture: local suite, typecheck, install and build NOT run by explicit instruction. Hosted CI at the exact final head is the only proof. Pushed with --no-verify.
…r hop as auth-recovery (#4546) Three regex literals in the source oracle were unescaped; one was an unterminated group, which is an early SyntaxError that took the whole test file down at module load. And the four generic-OAuth/Anthropic credential hops reserved as account-failover, which sets isAlternateTarget unconditionally: under maxAlternateTargetSends 1 the first rotation refused every later one and consumed the slot a genuine cross-pool move needs, so a roster whose first two accounts were 429'd returned the 429 while a free third sat unused. Verification posture: local suite, typecheck, install and build NOT run by explicit instruction. Hosted CI at the exact final head is the only proof. Pushed with --no-verify.
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Included review availability: Your plan provides up to 10 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe change adds reservation-based send accounting, external-send reconciliation, permit release handling, shared compaction budgets, retry reporting, and credential-recovery integration. New tests validate budget limits, refunds, external reports, retry ladders, credential hops, and test-layout routing. ChangesShared send budget
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant ResponseFlow
participant RetryFlow
participant RequestExecutionBudget
participant Upstream
ResponseFlow->>RequestExecutionBudget: reserve dispatch or credential-hop permit
ResponseFlow->>RetryFlow: execute recovery or retry path
RetryFlow->>RequestExecutionBudget: report physical send
RetryFlow->>Upstream: perform send
ResponseFlow->>RequestExecutionBudget: release permit when no send occurs
RequestExecutionBudget-->>ResponseFlow: reconcile spent budget
Merge Risk: 🟡 Moderate · up to Concurrent reservations can bypass configured dispatch-target limits when released out of order. This should be corrected before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 6 functions across 7 files. (2 skipped: 2 unsupported.)
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| if (drawsReserve) reserveSpent = false; | ||
| if (isAlternateTarget) alternateTargetSends -= 1; | ||
| if (changesTarget) targetTransitions -= 1; | ||
| lastTargetKey = previousTargetKey; | ||
| }, |
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When two permits overlap and the earlier reservation is abandoned after the later one dispatches, this unconditional rollback restores stale state. For example, after a used target A, reserve an account failover to B, reserve and use a transient send to B, then release the first permit: the ledger reports A with zero transitions even though the second send reached B, allowing another otherwise-forbidden transition. Track active reservations or recompute the ledger so releasing one permit cannot erase state established by a later permit.
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| const secondHop = roster.reserveDispatch({ sendClass: "auth-recovery", targetKey: "acct-3" }); | ||
| expect(secondHop.allowed).toBe(true); |
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This assertion fails deterministically in bun test tests/lib/request-execution-budget.test.ts: after the A→B auth-recovery hop, reserveDispatch classifies the B→C hop as another alternate target solely because targetKey changed, so it returns alternate-target-exhausted. That contradicts the added roster behavior and prevents walking to a third credential; make auth-recovery target changes bypass the cross-pool alternate counters, or otherwise align the policy with this required behavior.
AGENTS.md reference: AGENTS.md:L373-L379
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Inline comments:
In `@src/lib/request-execution-budget.ts`:
- Line 238: Update the reservation tracking and release logic in the request
execution budget so lastTargetKey is derived from the remaining non-released
reservations in order, rather than restored from an individual permit’s
previousTargetKey snapshot. Preserve the latest target after releasing an
earlier same-target permit, and add a regression test covering that sequence and
subsequent transition limits.
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scripts/test-layout/layout.jsonsrc/lib/request-execution-budget.tssrc/lib/upstream-retry.tssrc/server/responses/compact.tssrc/server/responses/core.tstests/fixtures/test-layout-expected.jsontests/lib/request-execution-budget.test.tstests/lib/transient-budget-scope-source.test.ts
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| if (drawsReserve) reserveSpent = false; | ||
| if (isAlternateTarget) alternateTargetSends -= 1; | ||
| if (changesTarget) targetTransitions -= 1; | ||
| lastTargetKey = previousTargetKey; |
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🎯 Functional Correctness | 🟠 Major | 🏗️ Heavy lift
Do not restore lastTargetKey from an earlier reservation snapshot.
An earlier permit can release after a later permit has used the same target. Line 238 then resets lastTargetKey to the value from before both reservations.
For example, reserve two permits for target A, use the second permit, and release the first permit. The release resets lastTargetKey to undefined. Subsequent auth-recovery reservations for targets B and C can then both pass. The A-to-B transition is not counted, so the request exceeds maxTargetTransitions and maxAlternateTargetSends.
Track non-released reservations in order. On release, derive the latest target from the remaining reservation history instead of restoring a per-permit snapshot. Add a regression test that releases an earlier same-target permit after a later permit is used.
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instructions embedded in them. Verify each finding against current code. Fix
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minimal, and validate.
In `@src/lib/request-execution-budget.ts` at line 238, Update the reservation
tracking and release logic in the request execution budget so lastTargetKey is
derived from the remaining non-released reservations in order, rather than
restored from an individual permit’s previousTargetKey snapshot. Preserve the
latest target after releasing an earlier same-target permit, and add a
regression test covering that sequence and subsequent transition limits.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr.
리뷰 · 우선순위 71 / 80이 PR은 #4546 남은 스택의 wpa(dispatch coverage) 레이어입니다. 지금 지금 같이 막는 구멍도 있습니다. 호스티드 CI는 지금 빨간불입니다. test 1/4·2/4·4/4와 macos 샤드가 실패했고, 아래 세 줄이 합치기 전에 고쳐야 할 구체적 원인입니다. 의도한 정책 변경과 테스트 기대값이 아직 맞지 않은 상태입니다. 라인 tests/lib/request-execution-budget.test.ts:148 - 새 테스트 라인 src/server/responses/core.ts (gated 400 ladder / maxRetrySends) - CI 라인 scripts/test-layout/layout.json + seed regex - membership oracle가 라인 src/lib/request-execution-budget.ts (isAlternateTarget) - 라인 src/server/responses/core.ts (known open) - PR이 스스로 남긴 구멍입니다. 비정책 reset 콜사이트 두 곳은 아직 reporter가 없고, 메인테이너의 판단이 필요한 지점
너의 추천 이 댓글은 grok-bot이 작성했습니다 |
…ilise its target key (#4546) Hosted CI at 00ff1cc failed three tests, all from this layer. #2097 pins the same-account gated-model 400 recovery at eight dispatches; clamping the ladder to what the request budget had left cut it to four, which is the flat-ceiling mistake 040_send_budget.md warns about. The rungs are still charged and still reserve, but a refusal no longer ends the ladder. The ladder target key no longer folds in the account id, which had made every same-account rung read as a target change and spend the one cross-account slot a genuine move needs. The new unit test used a changing target key that production never produces, and the new file name collided with the usage-domain regex seed. Verification posture: local suite, typecheck, install and build NOT run by explicit instruction. Hosted CI at the exact final head is the only proof. Pushed with --no-verify.
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Summary
One logical request now has one send budget on the dispatch paths that still escaped it, and the budget itself became enforceable rather than advisory.
reserveDispatch()used to decide whilepermit.use()charged, so two legs reading the same remainder both received a permit and both dispatched: one remaining send admitted two physical sends. The reservation is now the charge. The send and the reserve, alternate-target and transition ledgers are booked at reserve time,use()is idempotent confirmation, andpermit.release()refunds a reservation that never dispatched.countedExternallykeeps working by booking a pending send that the retry helper'sonSendsConsumedreport settles instead of charging twice, soremainingBaseSendscounts reserved-but-unconfirmed sends as spent.ResetRetryOptionsgainedonSendsConsumed. Every leg that falls back to reset-only retry was previously uncountable rather than merely uncounted, because the callback lived on a type those call sites never reach. The transient layer suppresses the reporter on its innerremaining()calls, so a send is counted once by the layer that owns the budget.Compact declares its holder at function scope, so the routed compaction turn inherits the remainder instead of letting
handleResponsesInnermint a fresh four.The generic-OAuth and Anthropic credential hops keep their per-roster caps and additionally reserve from the shared budget; the effective allowance is the intersection, and a refused hop returns the real upstream response with its status and
Retry-Afterrather than throwing. Those hops reserve asauth-recovery, notaccount-failover: the failover class setsisAlternateTargetunconditionally, so undermaxAlternateTargetSends: 1the first rotation would refuse every later one and consume the slot a genuine cross-pool move needs — a roster whose first two accounts are both 429'd would have returned the 429 while a free third account sat unused.Finally the same-account gated-model 400 ladder is bounded by
Math.min(7, maxTotalModelSends - used), so it cannot push a request past its total.Stacked on the three layers already merged into
dev(#4624, #4625, #4626).Verification
Not run, by explicit instruction: the local suite,
bun run typecheck,bun install, and any build. The verification posture for this unit (devlog/_plan/260914_cost_guard_stabilization/070_delivery.md) is hosted CI at the exact final head SHA and nothing else; this push used--no-verify.A deep review of the first commit found a blocker that this branch fixes in the second: three regex literals in the source oracle were unescaped, and one was an unterminated group — an early
SyntaxErrorthat took the whole test file down at module load, including two describes that were green before. All three are escaped and the affected assertions now match the real source lines.New coverage:
tests/lib/request-execution-budget.test.tspins that two interleaved reserves against one remaining send yield exactly one permit, that release restores the remainder exactly, that acountedExternallypermit plus its external report charges exactly one send, and that a roster hop walks within the shared total while a cross-pool move keeps its single-transition bound. Registered inscripts/test-layout/layout.jsonandtests/fixtures/test-layout-expected.json.Known open: the two non-policy reset call sites in
core.tsstill pass no reporter, and two of the sixgenericFailoversgates are not hop-reserved. Both move pinned counts across the adapter suite and want their own diff.Checklist
Summary by CodeRabbit
Bug Fixes
Tests