repo-sync-stalls.yml

name: Repo Sync Stalls

# **What it does**: This lets us know in Slack if repo-sync doesn't happen in a timely manner.
# **Why we have it**: We want repo-sync to keep the two repositories in sync with each other.
# **Who does it impact**: Open-source contributors, docs engineering.

on:
  workflow_dispatch:
  schedule:
    - cron: '20 */2 * * *' # Run every 2nd hour at 20 minutes after

permissions:
  pull-requests: read

jobs:
  repo-sync-stalls:
    runs-on: ubuntu-latest
    steps:
      - if: github.repository == 'github/docs-internal' || github.repository == 'github/docs'
        name: Check if repo sync is stalled
        uses: actions/github-script@98814c53be79b1d30f795b907e553d8679345975
        with:
          script: |
            let pulls;
            const owner = context.repo.owner
            const repo = context.repo.repo
            try {
              pulls = await github.rest.pulls.list({
                owner: owner,
                repo: repo,
                head: `${owner}:repo-sync`,
                state: 'open'
              });
            } catch(err) {
              throw err
              return
            }

            // Remove all pull requests that don't have the
            // 'automated-reposync-pr' label
            pulls.data = pulls.data.filter(pr =>
              pr.labels.some(label => label.name === 'automated-reposync-pr')
            )

            // Search for pull requests that have been open too long
            pulls.data.forEach(pr => {
              const timeDelta = Date.now() - Date.parse(pr.created_at);
              const minutesOpen = timeDelta / 1000 / 60;

              if (minutesOpen > 180) {
                core.setFailed('Repo sync appears to be stalled')
              }
            })
      - name: Send Slack notification if workflow fails
        uses: someimportantcompany/github-actions-slack-message@1d367080235edfa53df415bd8e0bbab480f29bad
        if: ${{ failure() }}
        with:
          channel: ${{ secrets.DOCS_ALERTS_SLACK_CHANNEL_ID }}
          bot-token: ${{ secrets.SLACK_DOCS_BOT_TOKEN }}
          color: failure
          text: Repo sync appears to be stalled for ${{github.repository}}. See https://github.com/${{github.repository}}/pulls?q=is%3Apr+is%3Aopen+label%3Aautomated-reposync-pr