delete-vm.yml

name: Delete ephemeral GCE VM

on:
  workflow_call:
    inputs:
      runner-label:
        type: string
        required: true
      machine-zone:
        type: string
        required: true

    secrets:
      gcp_credentials:
        required: true

jobs:
  run:
    runs-on: ubuntu-latest
    name: Delete ephemeral GCE VM
    steps:
      - id: auth
        name: Authenticate to Google Cloud
        uses: google-github-actions/auth@3a3c4c57d294ef65efaaee4ff17b22fa88dd3c69 # v1
        with:
          credentials_json: ${{ secrets.gcp_credentials }}
      - id: gcloud-auth
        name: Destroy GCE VM
        shell: bash
        run: |
          set -x

          echo "Removing GCE VM..."

          gcloud auth activate-service-account --key-file ${{ steps.auth.outputs.credentials_file_path }}
          if [ -z "$(gcloud compute instances list | grep "${{ inputs.runner-label }}")" ]; then
            # vm is gone
            exit 0
          fi

          gcloud compute instances delete ${{ inputs.runner-label }} --quiet --zone ${{ inputs.machine-zone }}