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Add low-risk OpenCode model failure fallback #16

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Merged
seonghobae merged 1 commit into from
Jun 22, 2026
Merged

Add low-risk OpenCode model failure fallback #16

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63 changes: 63 additions & 0 deletions .github/workflows/opencode-review.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -2529,6 +2529,67 @@ jobs:
scripts/ci/collect_failed_check_evidence.sh "$evidence_file"
}

approve_low_risk_changed_files_after_model_failure() {
local body_file="$1"
local changed_files_file
local changed_files_markdown

changed_files_file="$(mktemp)"
if ! gh api -X GET "repos/${GH_REPOSITORY}/pulls/${PR_NUMBER}/files" --paginate \
--jq '.[].filename' >"$changed_files_file"; then
rm -f "$changed_files_file"
return 1
fi
if [ ! -s "$changed_files_file" ]; then
rm -f "$changed_files_file"
return 1
fi

if ! awk '
function low_risk(path) {
if (path ~ /^\.github\/workflows\//) return 0
if (path ~ /(^|\/)(scripts?|src|app|lib|server|client|packages|migrations|infra|terraform)\//) return 0
if (path ~ /(^|\/)(Dockerfile|Containerfile|Makefile|package.json|package-lock.json|pnpm-lock.yaml|yarn.lock|pyproject.toml|poetry.lock|requirements[^\/]*\.txt|go.mod|go.sum|Cargo.toml|Cargo.lock)$/) return 0
if (path ~ /\.(sh|bash|zsh|fish|ps1|py|js|jsx|ts|tsx|mjs|cjs|go|rs|java|kt|kts|swift|c|cc|cpp|h|hpp|rb|php|cs|sql|ya?ml|json|toml|ini|env|lock)$/) return 0
if (path ~ /(^|\/)(README|SECURITY|CODE_OF_CONDUCT|CONTRIBUTING|SUPPORT|GOVERNANCE|LICENSE|NOTICE)(\.[^\/]+)?$/) return 1
if (path ~ /\.(md|mdx|txt|rst)$/) return 1
return 0
}
{
if (!low_risk($0)) {
exit 1
}
}
' "$changed_files_file"; then
rm -f "$changed_files_file"
return 1
fi

changed_files_markdown="$(
while IFS= read -r changed_file; do
printf -- '- `%s`\n' "$changed_file"
done <"$changed_files_file"
)"
rm -f "$changed_files_file"

{
printf '## Pull request overview\n\n'
printf 'OpenCode model attempts did not produce a usable control block, but the trusted gate verified that this PR has no failed peer GitHub Checks, no pending peer GitHub Checks, no unresolved human review threads, and no merge conflict.\n\n'
printf '## Findings\n\n'
printf 'No blocking findings.\n\n'
printf '## Summary\n\n'
printf 'Deterministic low-risk fallback approval was used because every changed file is documentation, policy, or non-executable metadata:\n\n'
printf '%s\n\n' "$changed_files_markdown"
printf 'This fallback is not used for workflow, source-code, script, dependency, infrastructure, configuration, or lockfile changes.\n\n'
printf -- '- Result: APPROVE\n'
printf -- '- Reason: OpenCode model output was unavailable, but the changed-file allowlist and trusted gate checks passed for current head `%s`.\n' "$HEAD_SHA"
printf -- '- Head SHA: `%s`\n' "$HEAD_SHA"
printf -- '- Workflow run: %s\n' "$RUN_ID"
printf -- '- Workflow attempt: %s\n' "$RUN_ATTEMPT"
} >"$body_file"
return 0
}

live_head_sha="$(gh api -X GET "repos/${GH_REPOSITORY}/pulls/${PR_NUMBER}" --jq '.head.sha')"
if [ "$live_head_sha" != "$HEAD_SHA" ]; then
echo "stale OpenCode run: event head=${HEAD_SHA}, live head=${live_head_sha}; skipping review side effects."
Expand Down Expand Up @@ -2599,6 +2660,8 @@ jobs:
create_pull_review "REQUEST_CHANGES" "$(cat "$human_thread_review_body_file")"
elif request_changes_for_merge_conflict_if_present; then
:
elif approve_low_risk_changed_files_after_model_failure "$failed_check_review_body_file"; then
create_pull_review "APPROVE" "$(cat "$failed_check_review_body_file")"
else
body="$(printf '%s\n' \
"## Pull request overview" \
Expand Down
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