purge-fastly.yml

name: Purge Fastly

# **What it does**: Sends a soft-purge to Fastly.
# **Why we have it**: So that, right after a production deploy, we start afresh
# **Who does it impact**: Writers and engineers.

on:
  workflow_dispatch:
    inputs:
      nuke_all:
        description: "Nuke all 'every-deployment' keys independent of language"
        required: false
        type: boolean
        default: false
      languages:
        description: "Comma separated languages. E.g. 'en,ja, es' (defaults to all)"
        required: false
        default: ''
  push:
    branches:
      - main

permissions:
  contents: read

env:
  FASTLY_TOKEN: ${{ secrets.FASTLY_TOKEN }}
  FASTLY_SERVICE_ID: ${{ secrets.FASTLY_SERVICE_ID }}

jobs:
  send-purges:
    if: >-
      ${{
        github.repository == 'github/docs-internal' &&
        (github.event_name != 'workflow_run' ||
        github.event.workflow_run.conclusion == 'success')
      }}
    runs-on: ubuntu-latest
    steps:
      - name: Check out repo
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

      - uses: ./.github/actions/node-npm-setup

      - name: Wait for production to match build number
        run: |
          needs=$(git rev-parse HEAD)
          start_time=$(date +%s)
          timeout_seconds=1200
          while [[ $needs != $(curl -s --fail --retry-connrefused --retry 5 https://docs.github.com/_build) ]]
          do
            if [[ $(($(date +%s) - $start_time)) -gt $timeout_seconds ]]
            then
              echo "Production did not match the build number within $timeout_seconds seconds"
              exit 1
            fi
            echo "Production is not up to date with the build commit"
            sleep 10
          done
          echo "Production is up to date with the build commit"

      - name: Purge Fastly edge cache independent of language
        if: ${{ inputs.nuke_all }}
        run: npm run purge-fastly-edge-cache

      - name: Purge Fastly edge cache per language
        if: ${{ !inputs.nuke_all }}
        env:
          LANGUAGES: ${{ inputs.languages }}
        run: npm run purge-fastly-edge-cache-per-language

      - uses: ./.github/actions/slack-alert
        if: ${{ failure() && github.event_name != 'workflow_dispatch' }}
        with:
          slack_channel_id: ${{ secrets.DOCS_ALERTS_SLACK_CHANNEL_ID }}
          slack_token: ${{ secrets.SLACK_DOCS_BOT_TOKEN }}