sync.yml

name: Sync

on:
  schedule:
    - cron: 0 0 * * 0
  workflow_dispatch:
    inputs:
      workspaces:
        description: Space separated list of workspaces to sync (leave blank to sync all)
        required: false
      lock:
        description: Whether to acquire terraform state lock during sync
        required: false
        default: "true"

jobs:
  prepare:
    name: Prepare
    runs-on: ubuntu-latest
    outputs:
      workspaces: ${{ steps.workspaces.outputs.this }}
    defaults:
      run:
        shell: bash
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Discover workspaces
        id: workspaces
        env:
          WORKSPACES: ${{ github.event.inputs.workspaces }}
        run: |
          if [[ -z "${WORKSPACES}" ]]; then
            workspaces="$(ls github | jq --raw-input '[.[0:-4]]' | jq -sc add)"
          else
            workspaces="$(echo "${WORKSPACES}" | jq --raw-input 'split(" ")')"
          fi
          echo "this=${workspaces}" >> $GITHUB_OUTPUT
  sync:
    needs: [prepare]
    if: needs.prepare.outputs.workspaces != ''
    permissions:
      contents: write
    strategy:
      fail-fast: false
      matrix:
        workspace: ${{ fromJson(needs.prepare.outputs.workspaces) }}
    name: Sync
    runs-on: ubuntu-latest
    env:
      TF_IN_AUTOMATION: 1
      TF_INPUT: 0
      TF_LOCK: ${{ github.event.inputs.lock }}
      TF_WORKSPACE_OPT: ${{ matrix.workspace }}
      AWS_ACCESS_KEY_ID: ${{ secrets.RW_AWS_ACCESS_KEY_ID }}
      AWS_SECRET_ACCESS_KEY: ${{ secrets.RW_AWS_SECRET_ACCESS_KEY }}
      GITHUB_APP_ID: ${{ secrets.RW_GITHUB_APP_ID }}
      GITHUB_APP_INSTALLATION_ID: ${{ secrets[format('RW_GITHUB_APP_INSTALLATION_ID_{0}', matrix.workspace)] || secrets.RW_GITHUB_APP_INSTALLATION_ID }}
      GITHUB_APP_PEM_FILE: ${{ secrets.RW_GITHUB_APP_PEM_FILE }}
      TF_VAR_write_delay_ms: 300
    defaults:
      run:
        shell: bash
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Setup terraform
        uses: hashicorp/setup-terraform@633666f66e0061ca3b725c73b2ec20cd13a8fdd1 # v2.0.3
        with:
          terraform_version: 1.2.9
          terraform_wrapper: false
      - name: Initialize terraform
        run: terraform init -upgrade
        working-directory: terraform
      - name: Select terraform workspace
        run: |
          terraform workspace select "${TF_WORKSPACE_OPT}" || terraform workspace new "${TF_WORKSPACE_OPT}"
          echo "TF_WORKSPACE=${TF_WORKSPACE_OPT}" >> $GITHUB_ENV
        working-directory: terraform
      - name: Pull terraform state
        run: |
          terraform show -json > $TF_WORKSPACE.tfstate.json
        working-directory: terraform
      - name: Sync
        run: |
          npm ci
          npm run build
          npm run main
        working-directory: scripts
      - uses: ./.github/actions/git-config-user
      - env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git_branch="${GITHUB_REF_NAME}-sync-${TF_WORKSPACE}"
          git checkout -B "${git_branch}"
          git add --all
          git diff-index --quiet HEAD || git commit --message="sync@${GITHUB_RUN_ID} ${TF_WORKSPACE}"
          git push origin "${git_branch}" --force
  push:
    needs: [prepare, sync]
    if: needs.prepare.outputs.workspaces != ''
    name: Push
    runs-on: ubuntu-latest
    defaults:
      run:
        shell: bash
    steps:
      - name: Generate app token
        id: token
        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92 # v1.8.0
        with:
          app_id: ${{ secrets.RW_GITHUB_APP_ID }}
          installation_id: ${{ secrets[format('RW_GITHUB_APP_INSTALLATION_ID_{0}', github.repository_owner)] || secrets.RW_GITHUB_APP_INSTALLATION_ID }}
          private_key: ${{ secrets.RW_GITHUB_APP_PEM_FILE }}
      - name: Checkout
        uses: actions/checkout@v4
        with:
          token: ${{ steps.token.outputs.token }}
      - uses: ./.github/actions/git-config-user
      - env:
          WORKSPACES: ${{ needs.prepare.outputs.workspaces }}
        run: |
          echo "${GITHUB_RUN_ID}" > .sync
          git add .sync
          git commit --message="sync@${GITHUB_RUN_ID}"
          while read workspace; do
            workspace_branch="${GITHUB_REF_NAME}-sync-${workspace}"
            git fetch origin "${workspace_branch}"
            git merge --strategy-option=theirs "origin/${workspace_branch}"
            git push origin --delete "${workspace_branch}"
          done <<< "$(jq -r '.[]' <<< "${WORKSPACES}")"
      - run: git push origin "${GITHUB_REF_NAME}" --force