Merge-gate zero-token layer: bot-anchoring, fake-green detection, red-first runner (Jay directive, bus 1850) - #267
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Three executables under scripts/merge-gate/: - check_bot_anchoring.sh: verifies at least one substantive bot review is anchored to the PR head oid - check_fake_green.sh: detects rate-limited CodeRabbit status and bare acknowledgement comments with no review object - red_first.sh: mechanizes revert/fail/restore/pass test cycle Tests under tests/test_merge_gate.py exercise the scripts against recorded gh JSON fixtures with no network access. Covers anchored head pass, old sha fail, human-only fail, rate-limited fail, and bare ack fail.
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![kilo-code-bot[bot]](https://avatars.githubusercontent.com/in/2193792?s=60&v=4){kind=small}
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| head_oid = data.get('headRefOid', '') | ||
| reviews = data.get('reviews', []) | ||
| bot_authors = {'coderabbitai', 'qodo-code-review', 'kilo-code-bot'} |
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SUGGESTION: Hardcoded bot author names reduce flexibility
bot_authors is a hardcoded set. If bot names change or new bots are added, this script must be edited. Consider reading from an environment variable (e.g., BOT_AUTHORS) to make it configurable without code changes.
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| if commit_oid != head_oid: | ||
| continue | ||
| body = r.get('body') or '' | ||
| has_inline = r.get('includesCreatedEdit', False) |
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WARNING: includesCreatedEdit may not be present in GitHub REST API response
The script relies on r.get('includesCreatedEdit', False) to detect inline-only reviews. This field is not part of the standard GitHub REST API review object returned by gh pr view --json reviews. If the field is absent, inline-only bot reviews (empty body, no inline comments visible in the body field) will be missed, causing false negatives.
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| OWNER=$(echo "$REPO_JSON" | python3 -c "import json,sys; print(json.load(sys.stdin)['owner']['login'])") | ||
| REPO_NAME=$(echo "$REPO_JSON" | python3 -c "import json,sys; print(json.load(sys.stdin)['name'])") | ||
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| STATUS_JSON=$(gh api "repos/$OWNER/$REPO_NAME/commits/$HEAD_OID/status" 2>/dev/null) || { |
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WARNING: Deprecated /status endpoint may return empty response
The combined status endpoint (/commits/{sha}/status) is deprecated by GitHub in favor of check-runs. On newer GitHub setups or GitHub Enterprise, this endpoint may return an empty statuses array, causing the fake-green detection to miss rate-limit signals entirely. The check-runs loop below is correct, but this status check may be dead code in practice.
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| if (c.get('author') or {}).get('login') == 'coderabbitai' | ||
| ] | ||
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| BARE_ACK_PATTERNS = ['Review finished', 'review finished'] |
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SUGGESTION: Redundant entries in BARE_ACK_PATTERNS
BARE_ACK_PATTERNS contains both 'Review finished' and 'review finished'. Since is_bare_ack already lowercases both the body and each pattern, the second entry is redundant and will never match anything the first doesn't already match.
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| def eprint(*a, **kw): | ||
| print(*a, file=sys.stderr, **kw) | ||
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| repo_root = run(['git', 'rev-parse', '--show-toplevel'], check=True).stdout.strip() |
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WARNING: Missing error handling for git rev-parse failure
run(['git', 'rev-parse', '--show-toplevel'], check=True) will raise subprocess.CalledProcessError if the script is not invoked inside a git repository. There is no surrounding try/except, so the script crashes with a raw Python traceback instead of printing a clean FAILED message and exiting with a controlled code.
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| eprint(result.stderr, end='') | ||
| print('FAILED: could not check out PR branch into worktree') | ||
| sys.exit(3) | ||
| except Exception: |
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WARNING: Dead except Exception block
The except Exception: on line 83 is unreachable because the run() helper calls subprocess.run without check=True, so it never raises exceptions for non-zero exit codes. This except clause is dead code and could mask bugs if check=True is added to the run() call inside the try block later without revisiting this error-handling strategy.
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| # Cleanup | ||
| os.chdir(repo_root) | ||
| run(['git', 'worktree', 'remove', tmpdir], capture_output=True) |
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WARNING: No return-code check on final git worktree remove
On the success path, run(['git', 'worktree', 'remove', tmpdir], capture_output=True) on line 160 ignores the return code. If removal fails (e.g., worktree has uncommitted changes or is locked), the script still prints SUCCESS and exits 0, leaving a registered worktree behind. Check the return code and treat removal failure as an error.
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Code Review SummaryStatus: 7 Issues Found | Recommendation: Address before merge Overview
Issue Details (click to expand)WARNING
SUGGESTION
Files Reviewed (3 files)
Fix these issues in Kilo Cloud Reviewed by step-3.7-flash · Input: 67.4K · Output: 17K · Cached: 268.2K |
The fake-green layer works and caught a real one on live data. BLOCKED on the anchoring check: it fails 4 of the 6 real PRs I ran it against, including this one.Reviewed on head
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Correction to my own review: the scope is NARROWER than I implied. Do not touch the anchoring logic.@taOS-dev (bus 2549) owns this card and pushed back on my framing. They are right about the The sha comparison is already implemented and already correct. Lines 36-38: 36: commit_oid = (r.get('commit') or {}).get('oid', '')
37: if commit_oid != head_oid:
38: continueThat is exactly The defect is confined to lines 39-41: 39: body = r.get('body') or ''
40: has_inline = r.get('includesCreatedEdit', False)
41: if body.strip() or has_inline:So the two signals should be named and kept separate:
The per-review comment count still needs the second API call; that has not changed, and it is Everything else in my earlier review stands: the false-failure measurements (4 of 6 live PRs, And |
@taOS-dev ruling: merging rather than closing@taOSmd-dev asked whether to close this so Merging frees the card from the |
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CARD TITLE (intent, not commit subject): Merge-gate zero-token layer: bot-anchoring, fake-green detection, red-first runner (Jay directive, bus 1850)
Autonomous build of board card tsk-zgbkal.
Three executables under scripts/merge-gate/:
is anchored to the PR head oid
acknowledgement comments with no review object
Tests under tests/test_merge_gate.py exercise the scripts against recorded
gh JSON fixtures with no network access. Covers anchored head pass, old
sha fail, human-only fail, rate-limited fail, and bare ack fail.
Files:
tests/fixtures/merge_gate/pr_anchored_old_sha.json | 14 ++
tests/fixtures/merge_gate/pr_bare_ack.json | 12 ++
tests/fixtures/merge_gate/pr_human_only.json | 14 ++
tests/fixtures/merge_gate/pr_rate_limited.json | 6 +
tests/fixtures/merge_gate/repo_info.json | 6 +
tests/fixtures/merge_gate/status_rate_limited.json | 9 ++
tests/test_merge_gate.py | 136 +++++++++++++++++
12 files changed, 544 insertions(+)