verify-examples.yml

name: Verify examples

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

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

permissions: read-all

jobs:
  dependabot:
    name: Verify changes to examples
    runs-on: ubuntu-latest

    steps:
    - name: Check out code
      uses: actions/checkout@v3
      with:
        fetch-depth: 0

    - name: Set up Go
      uses: actions/setup-go@v3
      with:
        go-version: 1.19.*
      id: go

    # Skip changes not affecting examples or integration/examples
    - name: Computes number of changes to examples
      # can't use github.event.before as it may represent
      run: |
        git diff --name-only ${{github.event.pull_request.base.sha}}...${{github.event.pull_request.head.sha}} \
             | sed -n -e 's;^integration/examples/\([^/]*\)/.*;integration/examples/\1;p' \
             | sort -u > /tmp/changed
        CHANGED_EXAMPLES=$(tr '\012' ' ' < /tmp/changed)
        echo "CHANGED_EXAMPLES=$CHANGED_EXAMPLES"
        echo "CHANGED_EXAMPLES=$CHANGED_EXAMPLES" >> $GITHUB_ENV
        CHANGED_EXAMPLES_COUNT=$(wc -l < /tmp/changed)
        echo CHANGED_EXAMPLES_COUNT=$CHANGED_EXAMPLES_COUNT
        echo "CHANGED_EXAMPLES_COUNT=$CHANGED_EXAMPLES_COUNT" >> $GITHUB_ENV

    #- name: Install Minikube from minikube master branch @HEAD and start cluster
    #  run: |
    #   curl -Lo minikube https://storage.googleapis.com/minikube-builds/master/minikube-linux-amd64
    #    sudo install minikube /usr/local/bin/minikube
    #    minikube start --profile=minikube --driver=docker

    - name: Build Skaffold from HEAD
      if: ${{ env.CHANGED_EXAMPLES_COUNT > 0 }}
      run: |
        make
        echo SKAFFOLD_BINARY=$PWD/out/skaffold >> $GITHUB_ENV
        out/skaffold config set --global collect-metrics false

    - name: Build changed examples
      if: ${{ env.CHANGED_EXAMPLES_COUNT > 0 }}
      run: |
        for dir in $CHANGED_EXAMPLES; do
            (cd $dir && echo ">> $dir" && \
                if [[ $dir == 'integration/examples/custom-buildx' ]]; then \
                    echo "skipping $dir: requires image pushing to succeed which is not done in these tests"; \
                elif [ $(expr "$($SKAFFOLD_BINARY inspect build-env list)" : '.*"type":"local".*') -gt 0 ]; then \
                    $SKAFFOLD_BINARY build --push=false --cache-artifacts=false; \
                else \
                    echo "skipping $dir: not local build-env"; \
                fi) \
             || exit 1;
        done