conformance-tetragon-gke.yaml

name: ConformanceTetragonGKE (ci-tetragon-gke)

# Any change in triggers needs to be reflected in the concurrency group.
on:
  push:
    branches:
      - master

env:
  clusterName: ${{ github.repository_owner }}-${{ github.event.repository.name }}-${{ github.run_id }}
  zone: us-west2-a
  # https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke
  USE_GKE_GCLOUD_AUTH_PLUGIN: True

jobs:
  installation:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - name: Checkout code
        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Set up job variables
        id: vars
        run: |
          # Get last commit message
          readonly local last_commit_log=$(git log -1 --grep "^Add tetragon" --pretty=format:"%s")
          echo "last commit log: $last_commit_log"

          readonly local chart_version=$(echo "$last_commit_log" | grep -Eo "Add tetragon [^@]+" | sed 's/Add\ tetragon\ //' )
          echo "Helm chart detected version: '${chart_version}'"

          if [[ -n "${chart_version}" ]]; then
            echo ::set-output name=chartVersion::${chart_version}
          fi
          echo ::set-output name=owner::${{ github.sha }}

      - name: Set up gcloud credentials
        id: 'auth'
        uses: 'google-github-actions/auth@8254fb75a33b976a221574d287e93919e6a36f70'
        with:
          credentials_json: '${{ secrets.GCP_PR_SA_KEY }}'

      - name: Should it be e2e tested?
        run: |
          if [[ -z "${{ steps.vars.outputs.chartVersion }}" ]]; then
            echo "Not running tetragon helm e2e tests since the helm chart version was not detected in commit message"
            echo "Expected format: 'Add tetragon <chart-version>@<upstream-commit-sha>'"
            exit 0
          fi

      - name: Set up gcloud CLI
        uses: google-github-actions/setup-gcloud@f0990588f1e5b5af6827153b93673613abdc6ec7
        with:
          project_id: ${{ secrets.GCP_PROJECT_ID }}

      - name: Display gcloud CLI info
        run: |
          gcloud info

      - name: Install gke-gcloud-auth-plugin
        run: |
          gcloud components install gke-gcloud-auth-plugin

      - name: Create GKE cluster
        run: |
          gcloud container clusters create ${{ env.clusterName }} \
            --labels "usage=${{ github.repository_owner }}-${{ github.event.repository.name }},owner=${{ steps.vars.outputs.owner }}" \
            --zone ${{ env.zone }} \
            --release-channel rapid \
            --num-nodes 1

      - name: Get cluster credentials
        run: |
          gcloud container clusters get-credentials ${{ env.clusterName }} --zone ${{ env.zone }}

      - name: Install Tetragon
        run: |
          helm repo add cilium https://helm.cilium.io
          helm repo update
          helm install tetragon cilium/tetragon -n kube-system --version ${{ steps.vars.outputs.chartVersion }}
          kubectl rollout status -n kube-system ds/tetragon -w

      - name: Clean up GKE
        if: ${{ always() }}
        run: |
          gcloud container clusters delete ${{ env.clusterName }} --zone ${{ env.zone }} --quiet --async
        shell: bash {0} # Disable default fail-fast behaviour so that all commands run independently