validate-solutions.yaml

name: validate-solutions
on:
  # disable normal push trigger to avoid running duplicates during PRs
  # push:
  #   paths:
  #     - solutions/**
  pull_request:
    branches: [main]
    paths:
      - 'solutions/**'

jobs:
  render-and-validate:
    runs-on: ubuntu-latest
    steps:
      - name: checkout
        uses: actions/checkout@v1

      - name: 'Validate Solutions Packages'
        run: |
          # set kpt and nomos to run with docker in /workspace working directory
          # note: starting with nomos ~v1.14.1, the image as an entrypoint to the 'nomos' command (only need to pass the parameters)
          KPT="docker run -v $PWD:/workspace -w /workspace --user $(id -u):$(id -g) -v /var/run/docker.sock:/var/run/docker.sock gcr.io/kpt-dev/kpt:v1.0.0-beta.27"
          NOMOS="docker run -v $PWD:/workspace -w /workspace gcr.io/config-management-release/nomos:v1.14.2"
          TEMP_DIR='temp-workspace'

          # find all Kptfile in solutions/, extract its directory name and sort
          for pkg in $(find solutions -name Kptfile -exec dirname {} \; | sort)
          do
            echo -e "\n##############################\n## Validating '${pkg}' \n##############################"

            # check if the package was modified (git diff exit code not 0), or if the flag to validate all is set
            if ! git diff origin/main --quiet --exit-code -- ${pkg} || [[ "${VALIDATE_ALL_SOLUTIONS}" == "true" ]] ; then
              # create temporary directory to copy the package
              mkdir -p "${TEMP_DIR}/${pkg}"
              cp -rf "${pkg}/." "${TEMP_DIR}/${pkg}"

              echo -e "\n## Running 'kpt fn render ${pkg}' ...\n"
              ${KPT} fn render "${TEMP_DIR}/${pkg}" --truncate-output=false

              # TODO: kubeval is no longer maintained, future improvement to possibly use kubeconform or apply to a kind cluster
              # !!! the kpt kubeval function can change quotes in annotations and remove duplicate resources (maybe 'kpt fn eval' does this?)
              # to workaround this, set an '--output' directory to avoid in-place modifications, the directory must not exist
              # to set strict=true, CRD schemas would need to be updated (with schema_location and additional_schema_locations)
              # skip 'ConfigMap' kinds, setters may not always be string and would cause it to fail
              # skip 'DNSRecordSet' kind, baked in schema flags 'spec.rrdatas' as required, but doc has it as deprecated
              # https://cloud.google.com/config-connector/docs/reference/resource-docs/dns/dnsrecordset#spec

              echo -e "\n## Running 'kpt fn eval -i kubeval:v0.3.0 ${pkg}' ...\n"
              rm -rf "${TEMP_DIR}/kubeval/${pkg}"
              ${KPT} fn eval -i kubeval:v0.3.0 "${TEMP_DIR}/${pkg}" --output="${TEMP_DIR}/kubeval/${pkg}" --truncate-output=false \
                -- ignore_missing_schemas='true' strict='false' skip_kinds='ConfigMap,DNSRecordSet'

              echo -e "\n## Running 'nomos vet ${pkg}' ...\n"
              ${NOMOS} vet --no-api-server-check --source-format unstructured --path "${TEMP_DIR}/${pkg}"

              rm -rf "${TEMP_DIR}/${pkg}"
            else
              echo "No modification detected for the package, skipping."
            fi
          done

          # cleanup
          rm -rf "${TEMP_DIR}"

          echo -e "\n##############################\n## Validation Complete \n##############################"
        env:
          VALIDATE_ALL_SOLUTIONS: false