GKE.yml

name: GKE Test
on:
  pull_request:
    types: [ closed ]

concurrency:
  group: "GCP"

jobs:
  gcp:
    name: "GKE Test"
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4

      - name: Authenticate into gcloud
        uses: google-github-actions/auth@v2
        with:
          credentials_json: ${{ secrets.GCP_CREDENTIALS }}

      - name: Install gcloud CLI
        uses: google-github-actions/setup-gcloud@v2.1.0

      - name: Install gcloud k8s auth component
        run: gcloud components install gke-gcloud-auth-plugin

      - name: Install Terraform
        uses: hashicorp/setup-terraform@v3.1.1
        with:
          cli_config_credentials_token: ${{ secrets.TF_API_TOKEN }}
          terraform_version: "1.8.2"

      - name: Create Terraform Cloud descriptors
        run: |
          cp gke/terraform.cloud.tf.example gke/terraform.cloud.tf
          cp gke/main.tfvars.example gke/main.tfvars
          cp .github/gke/deployments.tf deployments/terraform.cloud.tf
          cp deployments/main.tfvars.example deployments/main.tfvars
          cp .github/gke/tests.tf tests/terraform.cloud.tf
          cp tests/main.tfvars.example tests/main.tfvars

      - name: Stand up GKE cluster
        run: |
          cd gke
          terraform init
          terraform apply \
            --var-file=main.tfvars \
            --var="project=${{ secrets.GCP_PROJECT }}" \
            --var="cluster_location=${{ vars.GCP_CLUSTER_LOCATION }}" \
            --var="cluster_machine_type=${{ vars.GCP_CLUSTER_MACHINE_TYPE }}" \
            --var="upstream_machine_type=${{ vars.GCP_UPSTREAM_MACHINE_TYPE }}" \
            --var="tests_machine_type=${{ vars.GCP_TEST_MACHINE_TYPE }}" \
            --auto-approve

      - name: Connect to GKE cluster
        run: |
          gcloud container clusters get-credentials "pt-${{ vars.GCP_CLUSTER_LOCATION }}" \
            --zone "${{ vars.GCP_CLUSTER_LOCATION }}" \
            --project "${{ secrets.GCP_PROJECT }}"
          
          kubectl config rename-context $(kubectl config current-context) performance-testing

      - name: Deploy testing resources
        run: |
          cd deployments
          terraform init
          terraform apply \
            --var-file=main.tfvars \
            --var="kubernetes_config_context=performance-testing" \
            --var="tyk_license=${{ secrets.DASH_LICENSE }}" \
            --auto-approve

      - name: Run Tests
        run: |
          cd tests
          terraform init
          terraform apply \
            --var-file=main.tfvars \
            --var="kubernetes_config_context=performance-testing" \
            --auto-approve

      - name: Test Grafana Snapshot
        run: |
          kubectl logs -n dependencies $(kubectl get pods -n dependencies --selector=app=snapshot-job -o jsonpath='{.items[-1].metadata.name}') --tail=1

      - name: Destroy Tests
        run: |
          cd tests
          terraform destroy \
            --var-file=main.tfvars \
            --var="kubernetes_config_context=performance-testing" \
            --auto-approve

      - name: Destroy testing resources
        run: |
          cd deployments
          terraform destroy \
            --var-file=main.tfvars \
            --var="kubernetes_config_context=performance-testing" \
            --var="tyk_license=${{ secrets.DASH_LICENSE }}" \
            --auto-approve

      - name: Destroy GKE cluster
        run: |
          cd gke
          terraform destroy \
            --var-file=main.tfvars \
            --var="project=${{ secrets.GCP_PROJECT }}" \
            --var="cluster_location=${{ vars.GCP_CLUSTER_LOCATION }}" \
            --var="cluster_machine_type=${{ vars.GCP_CLUSTER_MACHINE_TYPE }}" \
            --var="upstream_machine_type=${{ vars.GCP_UPSTREAM_MACHINE_TYPE }}" \
            --var="tests_machine_type=${{ vars.GCP_TEST_MACHINE_TYPE }}" \
            --auto-approve