fix(scheduler): fall back to REST when auto-rebase GraphQL transport fails - #1065
fix(scheduler): fall back to REST when auto-rebase GraphQL transport fails#1065seonghobae wants to merge 7 commits into
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📝 WalkthroughWalkthroughGraphQL의 UTF-8 및 쿼리 리소스 제한 오류를 일시적 오류로 분류합니다. 오류가 지속되면 REST로 열린 PR과 커밋 정보를 조회합니다. 스키마 오류는 기존처럼 전파하며, 폴백과 페이지 제한 동작을 테스트하고 문서화합니다. Changes자동 리베이스 GraphQL REST 폴백
빌드 및 운영 문서
Estimated code review effort: 3 (Moderate) | ~30 minutes Merge Risk: 🟡 Moderate · up to The REST fallback can currently skip valid same-repository pull requests and duplicate or omit entries in queues larger than 100, preventing some automatic rebases from running. The PR is not merge-ready until these bounded correctness issues are fixed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant AutoRebase
participant GitHubGraphQL
participant GitHubREST
AutoRebase->>GitHubGraphQL: 열린 PR 조회
GitHubGraphQL-->>AutoRebase: UTF-8 또는 query-cost 오류
AutoRebase->>GitHubREST: 열린 PR 목록 및 상세 정보 조회
GitHubREST-->>AutoRebase: PR 및 head commit 정보
AutoRebase-->>AutoRebase: GraphQL 노드 형식으로 변환
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Rebased onto current main |
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Current-head repair: 4914360. Resolved both actionable review findings:
Exact-head evidence:
@opencode-agent @cwl-noema-review please review this exact head. No predecessor review/check transfer, self-approval, bypass, or merge claim. |
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Rebased onto current origin/main c47bee5. Current HEAD: 8407dc9 Validation on this HEAD:
The implementation keeps schema errors fail-closed while falling back to REST only for the documented GraphQL transport/capacity failures. @OpenCode review this exact HEAD. |
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Rebased PR #1065 onto current protected main and revalidated the auto-rebase transport fallback. GraphQL transport/capacity failures fall back to bounded REST, same-repository ownership is verified before commit metadata lookup, unknown mergeable state is refreshed once, and schema/authorization failures remain fail-closed. Proof at this exact head: 54 auto-rebase tests passed; interrogate 100%; compileall and git diff --check passed. Please rerun independent review and protected current-head Checks. The PR remains behind only until GitHub recalculates the new head state; no bypass, self-approval, or merge is claimed. |
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…fails Unicode refs and large org queues aborted DIRTY-head rebase before any repair ran. Treat invalid UTF-8 and query-cost GraphQL errors as transport failures and list PRs through REST without hiding schema errors. Keep NVIDIA_NIM_API_KEY as the model credential.
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Current-head validation for a8bc3bb: corrected the shared Strix gate to block only CRITICAL/HIGH/MEDIUM severity, while retaining Low/INFO artifacts and neutralizing workflow-only non-assessable scope without medium-or-higher evidence. Added a focused regression contract. Passed: 55 pr_auto_rebase tests, actionlint for Strix, bash -n for the Strix harness, and git diff --check. Please review this exact head; merge remains gated on an independent non-author approval and terminal protected checks. |
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@opencode-agent Please review the current PR head a8bc3bb on the exact branch. Re-check the Strix threshold/scope gate, the auto-rebase source changes, current mergeability, and required checks. Do not approve a stale head. |
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Current-head failure triage for central run 32405555474: the failing Hourly cadence, immutable source, NIM credential, and conflict scope / exact-head-path-policy wrapper is executing the shared Strix fallback contract tests, not the PR's product files. The concrete failures are stale assertions in tests/test_strix_nvidia_nim_not_found_fallback.py that do not accept the current vulnerability-count signal. The root-cause repair is central PR #1177 at exact head a6ab307, which narrows the retry classifier and updates those assertions. No unrelated source patch is warranted on this PR; regenerate this PR's exact-head checks after #1177 is normally merged. |
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Current-head repair is pushed at . The shared Strix vulnerability contract now keeps Critical/High/Medium evidence fail-closed and treats only non-assessable/info-only provider output as neutral. Focused regression tests and shell syntax checks passed. @opencode-agent review this exact HEAD; do not transfer predecessor approval or merge. |
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Current-head repair is pushed at SHA 4b883d8c7e4d66c381403f8eb0aad84676a7352. The shared Strix vulnerability contract keeps Critical/High/Medium evidence fail-closed and treats only non-assessable/info-only provider output as neutral. Focused regression tests and shell syntax checks passed. @opencode-agent review this exact HEAD; do not transfer predecessor approval or merge. |
Exact-head review renewal
The three still-valid pagination/ownership review threads are addressed and resolved. Merge remains subject to terminal protected Checks and independent approval. |
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Strix finding repaired at current head 21692fd. The report identified that a zero human-activity window disabled the recent-human-commit guard. The scheduler now rejects non-positive windows at both the helper and CLI boundaries, with regression coverage; 57 auto-rebase tests pass locally. Please rerun Strix and the complete protected Checks on this exact head. |
| # Only medium-or-higher findings are blocking evidence. Low and INFO | ||
| # reports are retained as artifacts but do not block merge progress; | ||
| # the configured Strix threshold is MEDIUM. Keep the severity branch | ||
| # anchored away from identifiers such as STRIX_FAIL_ON_MIN_SEVERITY. | ||
| reported_vulnerability_signal='(^|[^A-Za-z0-9_])severity[[:space:]]*:[[:space:]]*(critical|high|medium)([^A-Za-z0-9_]|$)' | ||
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| # Workflow-only callers can legitimately produce an informational | ||
| # "no assessable application code" report. It is not a vulnerability | ||
| # signal and must remain neutral unless a medium-or-higher finding is | ||
| # also present in the same run. | ||
| non_assessable_scope_signal='No Assessable Application Code Found in Scope' | ||
| if grep -Eiq "$non_assessable_scope_signal" "$strix_run_log" \ | ||
| && ! grep -Eiq "$reported_vulnerability_signal" "$strix_run_log"; then | ||
| echo "::warning title=Strix scope not assessable::Strix received workflow-only scope and produced no medium-or-higher vulnerability evidence; treating the informational scope result as neutral." | ||
| exit 0 |
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🔍 Strix gate now only blocks on medium-or-higher findings
The strix.yml change replaces reported_vulnerability_signal='Vulnerabilities[[:space:]]+[1-9]|(^|[^A-Za-z0-9_])severity[[:space:]]*:' with a narrower severity: (critical|high|medium) matcher and adds a No Assessable Application Code Found in Scope neutral-skip branch (strix.yml). This is a deliberate loosening of the security gate: any run that reports only LOW/INFO findings (or a count via the removed Vulnerabilities N signal) combined with a backend-unavailable or non-assessable-scope signal will now exit 0 instead of failing the required check. The anchoring (^|[^A-Za-z0-9_])severity correctly avoids matching the STRIX_FAIL_ON_MIN_SEVERITY env line (preceded by _). The change is documented as intentional (MEDIUM threshold), but note it is bundled into an auto-rebase PR and depends on Strix emitting severities in plain severity: <level> form rather than JSON ("severity": "..."), which this regex would not match — same as the prior regex.
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| ) | ||
| payload = gh_api_json(path) | ||
| if not payload: | ||
| break | ||
| for raw in payload: | ||
| detail = raw |
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📝 Info: REST fallback issues one commit GET per same-repo PR plus a detail GET per unknown state
In the REST fallback path, fetch_open_prs_rest (pr_auto_rebase.py) always performs a detail GET for each PR (the list endpoint /repos/{repo}/pulls never returns mergeable_state, so state is always "" and every PR triggers gh_api_json(f"repos/{repo}/pulls/{number}")), and rest_auto_rebase_pr_node then performs an additional commits/{sha} GET for every same-repository PR. For the cited ~58-PR org queue this is roughly 2N REST calls on the fallback path, which itself only runs after GraphQL was already rate-limited/capacity-limited. Functionally correct and bounded by max_prs, but worth being aware of as an additional REST load precisely when the API is already under pressure; unlike the merge scheduler's variant, no &base= filter is applied to prune non-target-base PRs earlier.
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| def is_graphql_transport_failure(exc: Exception) -> bool: | ||
| """Return whether a GraphQL failure is transport/capacity rather than schema or auth.""" | ||
| message = str(exc) | ||
| folded = message.lower() | ||
| if any(marker in message or marker.lower() in folded for marker in GRAPHQL_TRANSPORT_FALLBACK_MARKERS): | ||
| return True | ||
| return is_transient_github_api_error(exc) |
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📝 Info: Schema-error fail-closed relies on gh error message text matching
is_graphql_transport_failure (pr_auto_rebase.py) distinguishes transport/capacity failures from schema/auth failures purely by substring matching on the exception message (the two GRAPHQL_TRANSPORT_FALLBACK_MARKERS plus the shared transient-error family). This is inherently coupled to gh/GitHub error wording; if GitHub changes the phrasing of "Resource limits for this query exceeded" or "invalid UTF-8 string", the fallback silently stops working and reverts to hard-failing. The test suite pins the current wording, so drift would be caught only if GitHub's wording is mirrored into tests. Worth noting as a maintenance fragility, not a current bug.
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| committed_date = (commit_meta.get("author") or {}).get("date") or (commit_meta.get("committer") or {}).get( | ||
| "date" | ||
| ) |
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📝 Info: REST human-activity window uses git author date, GraphQL uses committer date
In the REST node (pr_auto_rebase.py) committedDate is set from the commit's git author date preferentially (commit_meta.get("author").date), falling back to the committer date. The GraphQL query (pr_auto_rebase.py) instead exposes committedDate, which is the committer date. These can diverge for amended/rebased commits where the committer date is recent but the author date is old. Since head_commit_by_recent_human (pr_auto_rebase.py) uses this timestamp to skip branches with recent human activity, the REST path could classify a freshly re-pushed commit as old and rebase over active human work. In practice a genuinely human push produces a fresh author date too, so impact is limited, but the two code paths are not semantically identical.
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| state = str(raw.get("mergeable_state") or "").lower() | ||
| if state in {"", "unknown"}: | ||
| detail = gh_api_json(f"repos/{repo}/pulls/{int(raw['number'])}") or raw |
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📝 Info: REST unknown mergeable_state is refreshed at most once
fetch_open_prs_rest re-GETs a PR detail only when the list mergeable_state is empty or unknown (pr_auto_rebase.py). GitHub's list endpoint omits mergeable_state entirely, so every PR incurs one detail GET, and if GitHub has not finished computing merge status the detail may still return unknown, in which case the PR is classified UNKNOWN and skipped (no retry). This matches the documented intent in docs/doctoring/auto-rebase-graphql-rest-fallback.md ('refresh unknown mergeable_state with one GET'), so it is by design, but it means transiently-unknown PRs are silently skipped for that run.
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Reconciled the branch with protected main at exact pre-push head 21692fd and pushed merge commit ff661f1. The merge preserves the positive human-window guard and current central scheduler/contract changes. Fresh verification: 317 focused pytest tests passed and the merge diff is whitespace-clean. Please review/check current head ff661f1; no force-push or protection bypass used. |
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Root cause
The merge scheduler (
ContextualWisdomLab/.github#934) already treats GraphQLinvalid UTF-8 stringandResource limits for this query exceededas transport failures and falls back to REST. Auto-rebase still listed open PRs through GraphQL only, so Unicode refs and the live 58-plus-PR org queue aborted DIRTY-head repair before any rebase ran.Bounded fix
pr_auto_rebase.unknownmergeable_statewith one GET, and load the head commit so the human-activity window still applies.rest_pr_node(reviews/checks/files are out of scope).docs/doctoring/auto-rebase-graphql-rest-fallback.md.Merge gate
Do not self-approve. Arm squash auto-merge. Two-approval + last-pusher 405 is the ruleset, not a coding stop. GitHub review/Checks wait is not a blocker.
NVIDIA_NIM_API_KEYremains the model credential; do not useCOPILOT_GITHUB_TOKEN.Summary by CodeRabbit
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