integration-linux.yml

name: PR integration tests (linux)

# Triggers the workflow on push or pull request events
on: [push, pull_request]

permissions: read-all

concurrency:
  group: build-${{ github.event.pull_request.number || github.ref }}-${{github.workflow}}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

jobs:

  build:
    name: PR integration tests (linux)
    runs-on: ubuntu-latest
    strategy:
      matrix:
        kustomize_version: [5.0.3]
        ko_version: [0.4.0]
        kompose_version: [1.21.0]
        kpt_version: [1.0.0-beta.24]
        minikube_version: [1.30.1]
        gcloud_sdk_version: [410.0.0]
        container_structure_tests_version: [1.8.0]
        integration_test_partitions: [0, 1, 2, 3]
    steps:

    - name: Check out code into the Go module directory
      uses: actions/checkout@v4
      with:
        fetch-depth: 0

    - name: Set up Go
      uses: actions/setup-go@v4
      with:
        go-version: 1.22.*
      id: go

    # Retrieve build locations with `go env`
    # <https://markphelps.me/posts/speed-up-your-go-builds-with-actions-cache/>
    - id: go-cache-paths
      run: |
        echo "go-build=$(go env GOCACHE)" >> $GITHUB_OUTPUT
        echo "go-mod=$(go env GOMODCACHE)" >> $GITHUB_OUTPUT

    - uses: actions/cache@v4
      with:
        path: |
          ${{ steps.go-cache-paths.outputs.go-build }}
          ${{ steps.go-cache-paths.outputs.go-mod }}
        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
        restore-keys: |
          ${{ runner.os }}-go-

    # Skip integration tests for `docs`-only changes (only works for PR-based dev workflows like Skaffold's).
    # NOTE: grep output is stored in env var with `|| true` as the run command cannot fail or action will fail
    - name: Check if only docs changes were made in this PR
      run: |
        echo ${{ github.event.before }}
        echo ${{ github.event.after }}
        NON_DOCS_FILES_CHANGED=$(git diff --name-only ${{ github.event.pull_request.base.sha }}..${{ github.sha }}| grep -v '^docs/' || true) 
        echo "NON_DOCS_FILES_CHANGED=${#NON_DOCS_FILES_CHANGED}" >> $GITHUB_ENV  # get the char len of diff output (used later)

    - name: Install Kustomize
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        wget -O kustomize.tar.gz https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize/v${{ matrix.kustomize_version }}/kustomize_v${{ matrix.kustomize_version }}_linux_amd64.tar.gz
        sudo tar -xvf kustomize.tar.gz -C /usr/local/bin/

    - name: Install Ko
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        wget -O ko.tar.gz https://github.com/google/ko/releases/download/v${{ matrix.ko_version }}/ko_${{ matrix.ko_version }}_Linux_x86_64.tar.gz
        sudo tar -xvf ko.tar.gz -C /usr/local/bin/

    - name: Install Kompose
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        wget -O kompose https://github.com/kubernetes/kompose/releases/download/v${{ matrix.kompose_version }}/kompose-linux-amd64 && chmod +x kompose
        sudo mv kompose /usr/local/bin/

    - name: Install Kpt
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        wget -O kpt https://github.com/GoogleContainerTools/kpt/releases/download/v${{ matrix.kpt_version }}/kpt_linux_amd64 && chmod +x kpt
        sudo mv kpt /usr/local/bin/

    - name: Install GCloud
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        wget -O gcloud.tar.gz https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-${{ matrix.gcloud_sdk_version }}-linux-x86_64.tar.gz
        tar -xvf gcloud.tar.gz -C ${HOME}/
        ${HOME}/google-cloud-sdk/install.sh --usage-reporting=false --bash-completion=false --disable-installation-options
        echo "${HOME}/google-cloud-sdk/bin" >> $GITHUB_PATH

    - name: Configure GCloud with Docker
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run:  gcloud auth configure-docker

    - name: Install Container Structure Test
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        wget -O container-structure-test https://storage.googleapis.com/container-structure-test/v${{ matrix.container_structure_tests_version }}/container-structure-test-linux-amd64 && chmod +x container-structure-test
        sudo mv container-structure-test /usr/local/bin/

    - name: Setup other files and permissions
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        sudo chown $(whoami):docker ${HOME}/.docker -R
        sudo chmod g+rw ${HOME}/.docker -R
        echo '{}' > ${HOME}/.docker/config.json
        mkdir -p ${HOME}/.m2/ && cp ./hack/maven/settings.xml ${HOME}/.m2/settings.xml
        
    - name: Install Minikube and start cluster
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        curl -Lo minikube https://github.com/kubernetes/minikube/releases/download/v${{ matrix.minikube_version }}/minikube-linux-amd64
        sudo install minikube /usr/local/bin/minikube
        minikube start --profile=minikube --driver=docker

    - name: Make and install Skaffold binary from current PR
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }} # non docs files were changed, skaffold build needed
      run: |
        make
        sudo install "${HOME}/work/skaffold/skaffold/out/skaffold" /usr/local/bin/skaffold

    - name: Run integration tests
      if: ${{ env.NON_DOCS_FILES_CHANGED != 0 }}
      run: |
        skaffold config set --global collect-metrics false
        IT_PARTITION=${{ matrix.integration_test_partitions }} make integration-tests