sdk-platform-java-java_compatibility_check.yaml

# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Github action job to test core java library features on
# downstream client libraries before they are released.
on:
  pull_request:
name: sdk-platform-java Java 8 compatibility check
env:
  BUILD_SUBDIR: sdk-platform-java
jobs:
  filter:
    runs-on: ubuntu-latest
    outputs:
      library: ${{ steps.filter.outputs.library }}
    steps:
    - uses: actions/checkout@v4
    - uses: dorny/paths-filter@v3
      id: filter
      with:
        filters: |
          library:
            - 'sdk-platform-java/**'
  java8-compatibility-check:
    needs: filter
    if: ${{ needs.filter.outputs.library == 'true' }}
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: actions/setup-java@v4
      with:
        java-version: 17
        distribution: temurin
        cache: maven
    - name: Install sdk-platform-modules to local Maven repository
      shell: bash
      run: .kokoro/build.sh
      env:
        BUILD_SUBDIR: sdk-platform-java
        JOB_TYPE: install
    - name: Check Java 8 compatibility for class files
      shell: bash
      run: |
        find . -type f -name "*.class" -path "*/classes/*" \
          -not -path "*/grpc-*/*" \
          -not -path "*/proto-*/*" \
          -not -path "*/gapic-generator-java/*" -print |\
          while IFS= read -r class_file; do
          version=$(javap -v "${class_file}" | grep "major version" | cut -d ' ' -f 5)
          if [[ "${version}" != "52" ]]; then
            echo "${class_file} is not compatible with Java 8."
            exit 1
          fi
        done
        echo "All class files are compatible with Java 8."
      working-directory: sdk-platform-java