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PR automations

PR automations #1941

# Runs all automations related to PR events.
#
# See `issue_automations.yml` for the corresponding implementation for issues.
#
# The automations for PR events are a little more complex than those for issues
# because PRs are a less secure environment. To avoid leaking secrets, we need
# to run automations with code as it appears on `main`.
#
# `pull_request_target` serves this purpose but there is no corresponding
# `_target` version for `pull_request_review`. So we take this roundabout
# approach:
#
# This workflow waits for the `pr_automations_init.yml` workflow to complete and
# then uses its exports to run automations from main, with access to secrets.
#
# ...continued from `pr_automations_init.yml`
#
# 4. This workflow runs after `pr_automations_init.yml` workflow completes.
# 5. It downloads the artifacts from that workflow run.
# 6. It extracts the JSON file from the ZIP to `/tmp`.
# 7. It runs the automations as a script, which can access secrets.
name: PR automations
on:
workflow_run:
workflows:
- PR automations init
types:
- completed
jobs:
run:
name: Perform PR automations
runs-on: ubuntu-latest
# Prevent running this workflow on forks, it's unnecessary for external contributors
if: github.repository_owner == 'WordPress'
steps:
- name: Checkout repository
uses: actions/checkout@v4
# This step was copied from the GitHub docs.
# Ref: https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#using-data-from-the-triggering-workflow
- name: Download artifact
uses: actions/github-script@v7
with:
script: |
let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
owner: context.repo.owner,
repo: context.repo.repo,
run_id: context.payload.workflow_run.id,
});
let matchArtifact = allArtifacts.data.artifacts.filter((artifact) => {
return artifact.name == "event_info"
})[0];
let download = await github.rest.actions.downloadArtifact({
owner: context.repo.owner,
repo: context.repo.repo,
artifact_id: matchArtifact.id,
archive_format: 'zip',
});
let fs = require('fs');
fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/event_info.zip`, Buffer.from(download.data));
- name: Unzip artifact
run: |
unzip event_info.zip
mv event.json /tmp/event.json
- name: Perform PR labelling
uses: actions/github-script@v7
with:
github-token: ${{ secrets.ACCESS_TOKEN }}
script: |
const { main } = await import('${{ github.workspace }}/automations/js/src/label_pr.mjs')
await main(github, core)
- name: Perform PR automations
uses: actions/github-script@v7
if: success() || failure()
with:
github-token: ${{ secrets.ACCESS_TOKEN }}
script: |
const { main } = await import('${{ github.workspace }}/automations/js/src/project_automation/prs.mjs')
await main(github, core)