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fix(oauth): honor Kiro reset-aligned cooldown without Retry-After - #3256

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luvs01:fix/kiro-reset-aligned-cooldown
Sep 2, 2026
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luvs01:fix/kiro-reset-aligned-cooldown

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@luvs01 luvs01 commented Sep 2, 2026 •

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Summary

  • Treat missing or malformed Retry-After values as the absence of a usable upstream delay.
  • Restore the existing reset-aligned cooldown for a Kiro account that is already known to be exhausted.
  • Preserve valid immediate, future, and numeric Retry-After directives, including case-insensitive HTTP-date tokens, RFC 850's full-timestamp relative-year rule, and UTC asctime parsing.
  • Add integration regressions for missing, malformed, immediate, elapsed-date, nonstandard-date, timezone, full-timestamp two-digit-year boundaries, and positive Retry-After values.

Verification

  • bun test tests/kiro-pool-rank.test.ts tests/combos.test.ts — 72 pass, 0 fail on Bun 1.4.0 after rebasing onto the latest dev.
  • bun run typecheck — passed.
  • bun run privacy:scan — passed.
  • bun run test:changed — selected a broad four-worker suite and was stopped after 12 minutes of sustained 3.5 GB worker memory with no assertion output; the exact worker tree was terminated and no residual process remained. The directly affected regression files above are green.
  • Independent focused and OAuth-boundary review — no must-fix finding.

Checklist

  • Scope stays focused and avoids unrelated cleanup.
  • Docs or release notes were updated when needed.
  • Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

No public API, configuration, or UI contract changes, so documentation and release-note edits are not needed. Maintainer security review and sponsorship remain required for the OAuth surface.

Review readiness checklist

  • All CI tests are green on my local testing.
  • I pushed my PR to the latest dev commit.
  • I resolved all correct Codex and CodeRabbit findings.
  • My PR is ready for review.

Summary by CodeRabbit

  • Bug Fixes
    • Improved account failover when quota limits are reached and Retry-After information is missing or invalid.
    • Added support for standard HTTP date formats and immediate retry values, including expired dates.
    • Ensured valid retry delays take precedence over provider cooldown resets.
    • Improved redirection to alternate accounts during Kiro failover scenarios.

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📝 Walkthrough

Walkthrough

The change validates standard HTTP-date formats, preserves immediate Retry-After values when requested, applies exhausted-account cooldowns for missing or invalid values, and adds Kiro failover coverage.

Changes

OAuth 429 cooldown handling

Layer / File(s) Summary
Preserve immediate Retry-After values
src/combos/failover.ts, tests/combos.test.ts
parseRetryAfterMs validates IMF-fixdate, RFC 850, and asctime formats. With preserveImmediate, zero and expired values return a 1 ms cooldown. Malformed, negative, and excessively old values remain invalid.
Handle absent Retry-After values
src/oauth/generic-account-failover.ts
rotateGenericOAuthAccountOn429 applies the exhausted-account cooldown when parseRetryAfterMs returns undefined.
Validate Kiro failover cooldowns
tests/kiro-pool-rank.test.ts
The tests support provider-specific account seeding and verify fallback, immediate, expired, and 120-second Retry-After behavior.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to ca151

This PR restores reset-aligned cooldown behavior for exhausted Kiro accounts when Retry-After is missing or malformed while preserving valid retry directives. The change is localized and no actionable merge-blocking risk remains after normal checks and review.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 14.29% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 4 files. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately and concisely describes the main change: restoring Kiro OAuth reset-aligned cooldown handling when Retry-After is absent.
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@github-actions github-actions Bot added the intake: hygiene-blocked Deterministic PR hygiene checks failed label Sep 2, 2026
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⚠️ Deterministic hygiene checks failed.

  • unsponsored_surface — This changes an authentication, workflow, release-automation, or dependency surface. MAINTAINERS.md requires security review for these; ask a maintainer to apply maintainer-sponsored once they have reviewed it. Paths: src/oauth/generic-account-failover.ts.

@github-actions github-actions Bot added the bug Something isn't working label Sep 2, 2026
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luvs01 marked this pull request as ready for review September 2, 2026 09:31
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✅ READY

  • all PR quality gates passed; the review readiness checklist is complete.

Review readiness checklist

  • ✅ All CI tests are green on my local testing.
  • ✅ I pushed my PR to the latest dev commit.
  • ✅ I resolved all correct Codex and CodeRabbit findings.
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Maintainers: @lidge-jun @Ingwannu

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리뷰 · 우선순위 68 / 80

이 PR은 Kiro 계정이 이미 소진(exhausted)으로 알려진 상태에서, 업스트림이 쓸 만한 Retry-After 헤더를 안 줄 때 생기는 쿨다운 버그를 고칩니다. 지금 dev(HEAD 19b0157bb, 패키지 2.40.0)의 src/oauth/generic-account-failover.ts 안 rotateGenericOAuthAccountOn429를 보면, 주석에는 "소진된 계정은 기본 1분이 아니라 reset에 맞춘 쿨다운을 준다. 단 유효한 Retry-After가 있으면 그게 이긴다"라고 적혀 있습니다. 그런데 실제 조건은 parsed === null입니다.

문제는 parsed가 오는 곳입니다. 같은 함수는 src/combos/failover.ts의 parseRetryAfterMs를 부릅니다. 그 함수의 반환 타입은 number | undefined이고, 헤더가 없거나 비어 있거나 잘못된 값이면 undefined를 돌려줍니다. null을 돌려주는 경로는 없습니다. tests/combos.test.ts에도 parseRetryAfterMs(undefined) / 빈 문자열 / "0" / 잘못된 날짜가 전부 undefined라고 적혀 있습니다. 그래서 parsed === null 분기는 사실상 죽은 코드입니다. 소진된 Kiro 계정에 헤더가 없어도 exhaustedCooldownMs가 절대 호출되지 않고, 아래로 떨어져 DEFAULT_COOLDOWN_MS(60초)만 걸립니다. 주석이 약속한 reset 정렬 쿨다운이 런타임에서 한 번도 안 켜진 상태입니다.

고치는 한 줄은 그 조건을 parsed === undefined로 바꾸는 것입니다. 그러면 헤더가 없을 때만 src/oauth/account-quota-rank.ts의 exhaustedCooldownMs가 돌아갑니다. 그 함수는 provider가 kiro이고 계정 사용 상태가 exhausted일 때만 숫자를 주고, 아니면 null입니다. reset까지 남은 시간을 최소 5분·최대 24시간으로 잘라 줍니다. 유효한 Retry-After(예: "120")가 있으면 parsed가 숫자라서 exhausted 분기는 건너뛰고, 기존처럼 헤더 값이 이깁니다. 소진 증거가 없는 일반 OAuth 제공자(xAI 등)는 exhaustedCooldownMs가 null이라 예전처럼 1분 기본값으로 갑니다. 의도한 우선순위(헤더 > Kiro reset 정렬 > 기본 1분)가 주석과 다시 맞습니다.

테스트도 그 두 길을 직접 잠급니다. tests/kiro-pool-rank.test.ts의 pre-dispatch describe에서 seedAccounts가 provider 이름을 받게 넓어졌고, Kiro 계정 두 개를 심은 뒤 하나를 seedExhausted(..., now + 1시간)으로 표시합니다. 첫 테스트는 rotateGenericOAuthAccountOn429(..., null, now) 뒤에 genericFailoverRetryAfterSeconds("kiro", now)가 3600초인지 봅니다. 헤더 없이 reset 창이 쿨다운으로 살아남는지를 증명합니다. 둘째 테스트는 같은 소진 상태인데 Retry-After를 "120"으로 넘겨, 클라이언트가 보는 초가 120인지 확인합니다. 헤더 우선순위가 깨지지 않았는지도 같이 잠근 셈입니다. 작성자가 말한 포커스 회귀(kiro-pool-rank / generic-oauth-failover / combos)와 typecheck·privacy:scan은 통과했다고 적혀 있습니다.

types.ts/config.ts 대분할 캠페인과는 겹치지 않습니다. 건드리는 파일은 generic-account-failover.ts 한 줄과 Kiro 풀 랭크 테스트뿐입니다. 설정 스키마·타입 분할로 무효화될 성격이 아니므로 close-don't-rebase 대상이 아닙니다. 같은 기여자(luvs01)의 #3254는 네이티브 Chat의 transient 5xx/429 재시도 예산을 한 요청 카운터로 묶는 다른 축이라, 이 PR의 중복도 아닙니다. 다만 라벨에 intake: hygiene-blocked가 있고 본문 readiness 체크리스트 네 칸이 비어 있습니다. test:changed는 워커 메모리 때문에 중단했다고 적혀 있어, 머지 전에 hygiene/CI를 다시 맞춰야 합니다. 라벨은 이 댓글에서 바꾸지 않습니다.

라인 209 - 고치기 전 parsed === null은 parseRetryAfterMs가 절대 안 주는 값과 비교해서, Kiro reset 정렬 쿨다운 분기가 통째로 죽어 있었습니다. PR의 === undefined 교체가 그 구멍에 정확히 맞습니다.
라인 210 - exhausted ?? Math.min(parsed ?? DEFAULT_COOLDOWN_MS, MAX_COOLDOWN_MS)에서 exhausted가 숫자면(최대 24h) MAX_COOLDOWN_MS(15분)를 우회합니다. 이건 exhaustedCooldownMs 설계와 맞고, 헤더 경로만 15분 캡을 유지합니다. 회귀로 보이진 않습니다.
라인 213 - exhausted 경로로 쿨다운을 걸어도 cooldownSource는 여전히 parsed ? "retry-after" : "default"라서 "default"로 남습니다. 동작에는 안 닿지만, 나중에 관측/디버그할 때 reset 정렬과 기본 1분이 구분되지 않습니다.
tests/kiro-pool-rank.test.ts - 새 두 테스트가 헤더 없음(reset 1시간)과 헤더 "120" 우선을 각각 잠급니다. seedAccounts(..., "kiro") 확장은 기존 xAI 시나리오를 깨지 않습니다.
src/combos/failover.ts parseRetryAfterMs - 반환이 undefined만인 점은 tests/combos.test.ts와 이미 계약되어 있어, 이번 한 줄 수정과 문서/주석이 다시 일치합니다.
intake: hygiene-blocked / 본문 checklist - CI·최신 dev rebase·Codex/CodeRabbit 해소·ready 표시가 아직 비어 있습니다. 고침 자체와는 별개로 머지 게이트입니다.

메인테이너의 판단이 필요한 지점

  • cooldownSource에 reset 정렬을 나타낼 새 값(예: "exhausted-reset")을 이 PR에 같이 넣을지, 관측용이니 후속으로 미룰지.
  • Retry-After: 0은 파서가 undefined로 취급하므로, 소진된 Kiro 계정에서는 이번 수정 후 reset 창 쿨다운이 걸립니다. 일반(비소진) 계정은 여전히 기본 60초입니다. 이 해석을 유지할지.
  • hygiene-blocked와 비어 있는 readiness 체크리스트를 머지 전에 기여자가 스스로 해소하게 둘지, 메인테이너가 CI만 확인한 뒤 진행할지.
  • test:changed 전체 스위트를 이 브랜치에서 한 번 더 돌릴지, 이미 초록인 OAuth 경계 포커스 세트만으로 충분하다고 볼지.

너의 추천

  • 한 줄 수정과 회귀 테스트의 방향은 맞고, 현재 dev의 죽은 === null 분기와 정확히 대응합니다. types/config 분할과도 무관하니 닫지 말고 유지하세요.
  • 머지 전: (1) 최신 dev에 rebase/갱신, (2) hygiene-blocked 해소와 readiness 네 칸 체크, (3) 포커스 회귀(kiro-pool-rank / generic-oauth-failover / combos)와 typecheck를 CI에서 다시 초록 확인.
  • cooldownSource 라벨은 동작 버그가 아니므로 이 PR을 막지 말고, 원하면 후속 한 줄로 "exhausted-reset"을 추가하세요.
  • 승인 후 랜딩하면 원래 PR 잔여 처리 규칙에 따라 landed 코멘트·라벨·클로즈만 정리하면 됩니다.

이 댓글은 grok-bot이 작성했습니다

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Actionable comments posted: 1

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In `@tests/kiro-pool-rank.test.ts`:
- Around line 254-255: Add a focused test case alongside the existing generic
account failover tests that passes an unparseable Retry-After value such as
"not-a-duration" to rotateGenericOAuthAccountOn429, then assert the account
rotates to the next ID and genericFailoverRetryAfterSeconds returns the
reset-derived 3,600-second cooldown.

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Comment thread tests/kiro-pool-rank.test.ts
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luvs01 force-pushed the fix/kiro-reset-aligned-cooldown branch from 219ee1b to 825131d Compare September 2, 2026 09:58
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Comment thread src/oauth/generic-account-failover.ts
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Inline comments:
In `@src/combos/failover.ts`:
- Line 53: Update the timestamp parsing near the asctime handling in failover to
extract its date and time fields and construct the value with Date.UTC rather
than passing the timezone-less text directly to Date.parse. Add a regression
test that runs with a non-UTC TZ and verifies future Retry-After cooldown
behavior remains correctly interpreted as UTC.

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  • src/combos/failover.ts
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Comment thread src/combos/failover.ts Outdated
@luvs01
luvs01 force-pushed the fix/kiro-reset-aligned-cooldown branch from 0009edb to fca4de6 Compare September 2, 2026 10:50
@luvs01
luvs01 marked this pull request as ready for review September 2, 2026 10:51
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💡 Codex Review

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Reviewed commit: fca4de6e41

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Comment thread src/combos/failover.ts Outdated
@luvs01
luvs01 force-pushed the fix/kiro-reset-aligned-cooldown branch from fca4de6 to ca151c3 Compare September 2, 2026 11:06
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luvs01 marked this pull request as ready for review September 2, 2026 11:08
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💡 Codex Review

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Reviewed commit: ca151c3df3

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Comment thread src/combos/failover.ts Outdated
@luvs01
luvs01 force-pushed the fix/kiro-reset-aligned-cooldown branch from ca151c3 to 821462f Compare September 2, 2026 11:28
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luvs01 marked this pull request as ready for review September 2, 2026 11:29
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luvs01 marked this pull request as ready for review September 2, 2026 11:38
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@lidge-jun 최신 HEAD 821462f 기준으로 보안 경계까지 다시 확인했습니다.

쉽게 말하면 이 PR이 고치는 실제 버그는 이겁니다.

  • Kiro 계정이 이미 한도를 다 썼고 서버가 Retry-After를 주지 않으면, 로컬에 저장된 실제 리셋 시각까지 쉬어야 합니다.
  • 기존 코드는 해석 실패값이 undefined인데 null과 비교해서 이 분기를 놓쳤습니다.
  • 그래서 한도 소진 계정을 약 1분 뒤 다시 골라 같은 429를 반복할 수 있었습니다.
  • 이 PR은 비교를 바로잡고, 정상 Retry-After가 있으면 그 지시를 우선하며, 잘못된 날짜 문자열은 리셋 쿨다운을 우회하지 못하게 합니다.

확인 결과:

  • 악성 또는 잘못된 Retry-After 문자열이 무제한 지연이나 즉시 재선택을 만들지 않도록 10분 상한과 엄격한 날짜 검증이 유지됩니다.
  • OAuth 토큰 저장·조회·로그 경로는 건드리지 않습니다.
  • Bun 1.4.0 격리 환경에서 관련 테스트 72개, TypeScript 검사, privacy scan이 통과했습니다.
  • 실제 OCX/Codex/Paseo 설정 파일 5개는 전후 해시가 모두 동일합니다.
  • 보안 diff 검토에서 보고할 취약점은 나오지 않았습니다.

방향을 후원할 수 있어 maintainer-sponsored 라벨을 추가해 exact-head CI를 열겠습니다. 다만 OAuth 관련 변경이라 CI가 전부 초록이고 가능하면 @lidge-jun의 두 번째 확인까지 받은 뒤 승인·병합하겠습니다.

@Ingwannu Ingwannu added the maintainer-sponsored Maintainer sponsors this change to an auth, workflow, release, or dependency surface label Sep 2, 2026
@github-actions github-actions Bot added review-ready and removed intake: hygiene-blocked Deterministic PR hygiene checks failed labels Sep 2, 2026
@github-actions
github-actions Bot marked this pull request as ready for review September 2, 2026 15:06
@lidge-jun
lidge-jun merged commit fd324dc into lidge-jun:dev Sep 2, 2026
30 of 35 checks passed
tarunravi pushed a commit to tarunravi/opencodex that referenced this pull request Sep 14, 2026
…dge-jun#3256)

Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>
agentHits pushed a commit to agentHits/opencodex that referenced this pull request Sep 17, 2026
…dge-jun#3256)

Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>
@luvs01
luvs01 deleted the fix/kiro-reset-aligned-cooldown branch September 20, 2026 06:42
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