PX4-Autopilot/.github/workflows/pr-review-poster.yml
Ramon Roche a0e42f2032 ci(workflows): bump all action versions to latest majors
Bump every GitHub Action in the repository to its latest major
version, addressing the upcoming Node.js 20 deprecation. Several
of the old versions (checkout v4, cache v4, setup-node v4,
labeler v5) use the Node 20 runtime which GitHub is deprecating.
The new versions use Node 22.

- actions/checkout v4/v5 to v6
- actions/upload-artifact v4 to v7
- actions/download-artifact v4 to v8
- actions/cache, cache/restore, cache/save v4 to v5
- actions/setup-node v4 to v6
- actions/setup-python v5 to v6
- actions/github-script v7/v8 to v9
- actions/labeler v5 to v6
- peter-evans/find-comment v3 to v4
- dorny/paths-filter v3 to v4
- codecov/codecov-action v4 to v6
- docker/setup-buildx-action v3 to v4
- docker/build-push-action v6 to v7
- tj-actions/changed-files v46 to v47

Signed-off-by: Ramon Roche <mrpollo@gmail.com>
2026-04-10 07:30:50 -06:00

178 lines
8.0 KiB
YAML

name: PR Review Poster
# Generic PR review-comment poster. Sibling of "PR Comment Poster": that
# workflow posts sticky issue-style comments, this one posts line-anchored
# review comments on the "Files changed" tab. Any analysis workflow that
# wants to flag specific lines can produce a `pr-review` artifact and this
# workflow will dismiss any stale matching review and post a fresh one.
# Designed so analysis jobs running on untrusted fork PRs can still get
# their inline annotations posted back to the PR.
#
# ==============================================================================
# SECURITY INVARIANTS
# ==============================================================================
# This workflow runs on `workflow_run` which means it runs in the BASE REPO
# context with a WRITE token, even when the triggering PR comes from a fork.
# That is the entire reason it exists, and also the reason it is a loaded
# footgun. Anyone modifying this file MUST preserve the following invariants:
#
# 1. NEVER check out PR code. No `actions/checkout` with a ref. No git clone
# of a fork branch. No execution of scripts from the downloaded artifact.
# The ONLY things read from the artifact are `manifest.json` and
# `comments.json`, and both are treated as opaque data (JSON parsed by
# the poster script and the comment fields posted via the GitHub API).
#
# 2. `pr_number` is validated to be a positive integer before use.
# `marker` is validated to be printable ASCII only before use.
# `commit_sha` is validated to be 40 lowercase hex characters.
# `event` is validated against an allowlist of `COMMENT` and
# `REQUEST_CHANGES`. `APPROVE` is intentionally forbidden so a bot
# cannot approve a pull request. Validation happens inside
# Tools/ci/pr-review-poster.py which is checked out from the base
# branch, not from the artifact.
#
# 3. Comment bodies and the optional summary are passed to the GitHub API
# as JSON fields, never interpolated into a shell command string.
#
# 4. This workflow file lives on the default branch. `workflow_run` only
# loads workflow files from the default branch, so a fork cannot modify
# THIS file as part of a PR. The fork CAN cause this workflow to fire
# by triggering a producer workflow that uploads a `pr-review`
# artifact. That is intended.
#
# 5. The artifact-name filter (`pr-review`) is the only gate on which
# workflow runs get processed. Any workflow in this repo that uploads
# an artifact named `pr-review` is trusted to have written the
# manifest and comments itself, NOT copied fork-controlled content
# into them. Producer workflows are responsible for that.
#
# 6. `actions/checkout@v6` below uses NO ref (so it pulls the base branch,
# the default-branch commit this workflow file was loaded from) AND
# uses sparse-checkout to materialize ONLY
# Tools/ci/pr-review-poster.py and its stdlib-only helper module
# Tools/ci/_github_helpers.py. The rest of the repo never touches the
# workspace. This is safe: the only files the job executes are
# base-repo Python scripts that were reviewed through normal code
# review, never anything from the PR.
#
# 7. Stale-review dismissal is restricted to reviews whose AUTHOR is
# `github-actions[bot]` AND whose body contains the producer's
# marker. A fork PR cannot impersonate the bot login, and cannot
# inject the marker into a human reviewer's body without API
# access. Both filters together prevent the poster from ever
# dismissing a human review.
#
# ==============================================================================
# ARTIFACT CONTRACT
# ==============================================================================
# Producers upload an artifact named exactly `pr-review` containing:
#
# manifest.json:
# {
# "pr_number": 12345, // required, int > 0
# "marker": "<!-- pr-review-poster:clang-tidy -->", // required, printable ASCII
# "event": "REQUEST_CHANGES", // required, "COMMENT" | "REQUEST_CHANGES"
# "commit_sha": "0123456789abcdef0123456789abcdef01234567", // required, 40 hex chars
# "summary": "Optional review summary text" // optional
# }
#
# comments.json: JSON array of line-anchored review comment objects:
# [
# {"path": "src/foo.cpp", "line": 42, "side": "RIGHT", "body": "..."},
# {"path": "src/bar.hpp", "start_line": 10, "line": 15,
# "side": "RIGHT", "start_side": "RIGHT", "body": "..."}
# ]
#
# The `marker` string is used to find an existing matching review to
# dismiss before posting a new one. It MUST be unique per producer (e.g.
# include the producer name).
#
# Producers MUST write `pr_number` and `commit_sha` from their own
# workflow context (`github.event.pull_request.number` and
# `github.event.pull_request.head.sha`) and MUST NOT read either from any
# fork-controlled source.
on:
workflow_run:
# Producers that may upload a `pr-review` artifact. When a new
# producer is wired up, add its workflow name here. Runs of workflows
# not in this list will never trigger the poster. Every run of a
# listed workflow will trigger the poster, which will no-op if no
# `pr-review` artifact exists.
workflows:
- "Static Analysis"
types:
- completed
permissions:
pull-requests: write
actions: read
contents: read
jobs:
post:
name: Post PR Review
runs-on: ubuntu-latest
# Only run for pull_request producer runs. Push-to-main and other
# non-PR triggers have no review to post, so gating at the job level
# surfaces those as a clean "Skipped" in the UI instead of a
# silent no-op buried inside the script.
if: >-
github.event.workflow_run.conclusion != 'cancelled'
&& github.event.workflow_run.event == 'pull_request'
steps:
# Checkout runs first so the poster scripts are available AND so
# that actions/checkout@v6's default clean step does not delete the
# artifact zip that the next step writes into the workspace.
# Sparse-checkout restricts the materialized tree to just the
# poster script and its stdlib helper module.
- name: Checkout poster script only
uses: actions/checkout@v6
with:
sparse-checkout: |
Tools/ci/pr-review-poster.py
Tools/ci/_github_helpers.py
sparse-checkout-cone-mode: false
- name: Download pr-review artifact
id: download
uses: actions/github-script@v9
with:
script: |
const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
owner: context.repo.owner,
repo: context.repo.repo,
run_id: context.payload.workflow_run.id,
});
const match = artifacts.data.artifacts.find(a => a.name === 'pr-review');
if (!match) {
core.info('No pr-review artifact on this run; nothing to post.');
core.setOutput('found', 'false');
return;
}
const download = await github.rest.actions.downloadArtifact({
owner: context.repo.owner,
repo: context.repo.repo,
artifact_id: match.id,
archive_format: 'zip',
});
const fs = require('fs');
fs.writeFileSync('pr-review.zip', Buffer.from(download.data));
core.setOutput('found', 'true');
- name: Unpack artifact
if: steps.download.outputs.found == 'true'
run: |
mkdir -p pr-review
unzip -q pr-review.zip -d pr-review
- name: Validate artifact
if: steps.download.outputs.found == 'true'
run: python3 Tools/ci/pr-review-poster.py validate pr-review
- name: Post PR review
if: steps.download.outputs.found == 'true'
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
run: python3 Tools/ci/pr-review-poster.py post pr-review