add codex PR review workflow (#8626)

* feat: add codex PR review workflow

* refactor: simplify codex PR review comments

* chore: use ubicloud for codex review

* fix: harden codex review workflow

* chore: use chatgpt auth for codex review
This commit is contained in:
centdix
2026-03-31 21:21:39 +02:00
committed by GitHub
parent d67223de9b
commit 2862c1cf56
2 changed files with 168 additions and 0 deletions

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You are reviewing a GitHub pull request for this repository.
Review policy:
- Read `CLAUDE.md` before reviewing code.
- Only report issues you are confident are real and introduced by this pull request.
- Focus on bugs, security problems, and clear `CLAUDE.md` violations.
- Do not report style nits, speculative concerns, pre-existing issues, or problems that a normal linter/typechecker would obviously catch.
- Keep the review high signal. If there is no clear issue, return no findings.
Repository context:
- Read `./.github/codex/pr-review-context.md` for the PR metadata and the exact diff commands to use.
- Review only the changes introduced by this PR.
- Read additional files only when the diff is not enough to validate a finding.
- Do not modify any files.
Output requirements:
- Return a GitHub PR comment in markdown, not JSON.
- Start with `## Codex Review`.
- Give a short overall summary first.
- If you found high-signal issues, list them in a short numbered list with file paths and line numbers when you know them confidently.
- If you found no high-signal issues, say that explicitly.
- End with a `### Reproduction instructions` section containing a short descriptive paragraph for a tester explaining how to navigate the app to observe the change. Do not make it a numbered list. If the diff is not enough to infer this safely, say that plainly.
- Prefer at most 10 findings.

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.github/workflows/codex-pr-review.yml vendored Normal file
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name: Codex Auto Review
on:
pull_request:
types: [ready_for_review, opened]
concurrency:
group: codex-review-${{ github.event.pull_request.number }}
cancel-in-progress: true
jobs:
codex-review:
runs-on: ubicloud-standard-2
timeout-minutes: 30
if: github.event.pull_request.draft == false && github.event.pull_request.head.repo.fork == false
permissions:
contents: read
issues: write
steps:
- name: Check Codex configuration
id: codex_config
env:
CODEX_AUTH_JSON: ${{ secrets.CODEX_AUTH_JSON }}
run: |
if [ -n "$CODEX_AUTH_JSON" ]; then
echo "enabled=true" >> "$GITHUB_OUTPUT"
else
echo "enabled=false" >> "$GITHUB_OUTPUT"
echo "CODEX_AUTH_JSON is not configured; skipping Codex review."
fi
- name: Checkout repository
if: steps.codex_config.outputs.enabled == 'true'
uses: actions/checkout@v5
with:
ref: refs/pull/${{ github.event.pull_request.number }}/merge
fetch-depth: 1
- name: Set up Node.js
if: steps.codex_config.outputs.enabled == 'true'
uses: actions/setup-node@v4
with:
node-version: 22
- name: Install Codex CLI
if: steps.codex_config.outputs.enabled == 'true'
run: npm install --global @openai/codex@0.117.0
- name: Configure file-backed Codex auth
if: steps.codex_config.outputs.enabled == 'true'
env:
CODEX_AUTH_JSON: ${{ secrets.CODEX_AUTH_JSON }}
run: |
CODEX_HOME="$HOME/.codex"
echo "CODEX_HOME=$CODEX_HOME" >> "$GITHUB_ENV"
mkdir -p "$CODEX_HOME"
chmod 700 "$CODEX_HOME"
cat > "$CODEX_HOME/config.toml" <<'EOF'
cli_auth_credentials_store = "file"
EOF
printf '%s' "$CODEX_AUTH_JSON" > "$CODEX_HOME/auth.json"
chmod 600 "$CODEX_HOME/auth.json"
node -e 'JSON.parse(require("fs").readFileSync(process.argv[1], "utf8"))' "$CODEX_HOME/auth.json"
- name: Pre-fetch base and head refs for the PR
if: steps.codex_config.outputs.enabled == 'true'
env:
PR_BASE_REF: ${{ github.event.pull_request.base.ref }}
PR_NUMBER: ${{ github.event.pull_request.number }}
run: |
git fetch --no-tags origin \
"$PR_BASE_REF" \
"+refs/pull/$PR_NUMBER/head"
- name: Write Codex review context
if: steps.codex_config.outputs.enabled == 'true'
env:
PR_REPOSITORY: ${{ github.repository }}
PR_NUMBER: ${{ github.event.pull_request.number }}
PR_BASE_SHA: ${{ github.event.pull_request.base.sha }}
PR_HEAD_SHA: ${{ github.event.pull_request.head.sha }}
PR_TITLE: ${{ github.event.pull_request.title }}
PR_BODY: ${{ github.event.pull_request.body || '' }}
run: |
mkdir -p .github/codex
node <<'NODE'
const fs = require('fs');
const lines = [
`Repository: ${process.env.PR_REPOSITORY}`,
`PR number: ${process.env.PR_NUMBER}`,
`Base SHA: ${process.env.PR_BASE_SHA}`,
`Head SHA: ${process.env.PR_HEAD_SHA}`,
'',
'PR title:',
process.env.PR_TITLE || '(empty)',
'',
'PR body:',
process.env.PR_BODY || '(empty)',
'',
'Changed commits command:',
`git log --oneline ${process.env.PR_BASE_SHA}...${process.env.PR_HEAD_SHA}`,
'',
'Changed files command:',
`git diff --stat ${process.env.PR_BASE_SHA}...${process.env.PR_HEAD_SHA}`,
'',
'Full review diff command:',
`git diff --unified=0 ${process.env.PR_BASE_SHA}...${process.env.PR_HEAD_SHA}`
];
fs.writeFileSync('.github/codex/pr-review-context.md', `${lines.join('\n')}\n`);
NODE
- name: Run Codex review
if: steps.codex_config.outputs.enabled == 'true'
run: |
codex exec \
-C "$GITHUB_WORKSPACE" \
-m gpt-5.4 \
-c 'model_reasoning_effort="xhigh"' \
-s read-only \
-o codex-final-message.md \
- < .github/codex/pr-review.prompt.md
- name: Post Codex review comment
if: steps.codex_config.outputs.enabled == 'true'
uses: actions/github-script@v7
with:
github-token: ${{ github.token }}
script: |
const fs = require('fs');
const path = `${process.env.GITHUB_WORKSPACE}/codex-final-message.md`;
if (!fs.existsSync(path)) {
core.info('Codex did not produce a final message; skipping PR comment.');
return;
}
const body = fs.readFileSync(path, 'utf8').trim();
if (!body) {
core.info('Codex final message was empty; skipping PR comment.');
return;
}
await github.rest.issues.createComment({
owner: context.repo.owner,
repo: context.repo.repo,
issue_number: context.payload.pull_request.number,
body,
});