gke-destroy.yaml

name: "GKE Destroy"

on:
  workflow_dispatch:
    inputs:
      cluster-name:
        description: 'Name of GKE cluster to create'
        default: "demo-cluster"
      gcp-region:
        type: choice
        description: 'GCP region to create cluster'
        default: "us-east5"
        options:
        - us-east5
        - us-central1
        - us-east4
      gcp-zone:
        type: choice
        description: 'GCP zone to create cluster'
        default: "a"
        options: 
        - a
        - b
        - c

env:
  CLUSTER_NAME: ${{ github.event.inputs.cluster-name || 'demo-cluster' }}
  GCP_REGION: ${{ github.event.inputs.gcp-region || 'us-central1' }}
  GCP_ZONE: ${{ github.event.inputs.gcp-region || 'us-central1' }}-${{ github.event.inputs.gcp-zone || 'a' }}
  GCP_PROJECT_ID: ${{ secrets.GCP_PROJECT }}
  TF_VAR_project: ${{ secrets.GCP_PROJECT }}
  TF_VAR_cluster_name: ${{ github.event.inputs.cluster-name || 'demo-cluster' }}
  TF_VAR_region: ${{ github.event.inputs.gcp-region || 'us-central1' }}
  TF_VAR_zone: ${{ github.event.inputs.gcp-region || 'us-central1' }}-${{ github.event.inputs.gcp-zone || 'a' }}

jobs:
  terraform:
    name: "Terraform"
    runs-on: ubuntu-latest
    permissions:
      id-token: write
      contents: read
    defaults:
      run:
        working-directory: gke_tf
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - id: 'auth'
        name: 'Authenticate to Google Cloud'
        uses: google-github-actions/auth@v1.1.1
        with:
          create_credentials_file: 'true'
          workload_identity_provider: ${{ secrets.WIF_POOL }}
          service_account: ${{ secrets.SA_EMAIL }}
      - id: update-terraform-bucket
        name: Create GCP storage bucket
        run: sed -i "s/REPLACE_BUCKET/${GCP_PROJECT_ID}-${CLUSTER_NAME}/g" providers.tf
      - name: Terraform Init
        id: init
        run: terraform init

      - name: Terraform Apply
        run: terraform apply -destroy -auto-approve

      - id: delete-bucket
        name: Create GCP storage bucket
        run: |
          gcloud storage rm --recursive gs://${GCP_PROJECT_ID}-${CLUSTER_NAME} --project $GCP_PROJECT_ID --quiet
          gcloud storage buckets delete gs://${GCP_PROJECT_ID}-${CLUSTER_NAME} --project $GCP_PROJECT_ID --quiet