CI: Test on several Bazel and Ubuntu versions. #1941
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| name: "build protobufs" | |
| on: | |
| push: | |
| branches: | |
| - main | |
| - '*-dev' | |
| pull_request: | |
| branches: | |
| - main | |
| - '*-dev' | |
| schedule: | |
| - cron: "0 0 * * *" | |
| jobs: | |
| build: | |
| strategy: | |
| matrix: | |
| # We only test on the oldest version we want to support and latest. | |
| # We trust that things also work for versions in the middle. | |
| os: [ubuntu-22.04, ubuntu-latest] | |
| # See Bazelisk README for legal values. | |
| bazel_version: [7.x, latest] | |
| # Don't abort other runs when one of them fails, to ease debugging. | |
| fail-fast: false | |
| runs-on: ${{ matrix.os }} | |
| env: | |
| # This tells Bazelisk (installed as `bazel`) to use specified version. | |
| # https://github.com/bazelbuild/bazelisk?tab=readme-ov-file#how-does-bazelisk-know-which-bazel-version-to-run | |
| USE_BAZEL_VERSION: ${{ matrix.bazel_version }} | |
| CACHE_KEY: ${{ matrix.os }}_bazel-${{ matrix.bazel_version }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| with: | |
| submodules: recursive | |
| - name: Mount bazel cache | |
| uses: actions/cache/restore@v4 | |
| with: | |
| # See https://docs.bazel.build/versions/master/output_directories.html | |
| path: "~/.cache/bazel" | |
| # Create a new cache entry whenever Bazel files change. | |
| # See https://docs.github.com/en/actions/guides/caching-dependencies-to-speed-up-workflows | |
| key: ${{ env.CACHE_KEY }}-${{ hashFiles('**/*.bazel*', '**/*.bzl') }} | |
| restore-keys: | | |
| ${{ env.CACHE_KEY }} | |
| - name: Save start time | |
| uses: josStorer/get-current-time@v2 | |
| id: start-time | |
| with: | |
| # Unix timestamp -- seconds since 1970. | |
| format: X | |
| - name: Build proto/ | |
| run: cd proto && bazel build //... && bazel test //... | |
| - name: Build bazel/example/using-bzlmod/ | |
| run: cd bazel/example/using-bzlmod && bazel build //... | |
| - name: Build bazel/example/using-workspace/ | |
| run: cd bazel/example/using-workspace && bazel build //... | |
| # This is a legacy example that doesn't work beyond Bazel 7.x. | |
| if: ${{ env.USE_BAZEL_VERSION == '7.x' }} | |
| - name: Save end time | |
| # Always save the end time so we can calculate the build duration. | |
| if: always() | |
| uses: josStorer/get-current-time@v2 | |
| id: end-time | |
| with: | |
| # Unix timestamp -- seconds since 1970. | |
| format: X | |
| - name: Calculate build duration | |
| # Always calculate the build duration so we can update the cache if needed. | |
| if: always() | |
| run: | | |
| START=${{ steps.start-time.outputs.formattedTime }} | |
| END=${{ steps.end-time.outputs.formattedTime }} | |
| DURATION=$(( $END - $START )) | |
| echo "duration=$DURATION" | tee "$GITHUB_ENV" | |
| - name: Compress cache | |
| # Always compress the cache so we can update the cache if needed. | |
| if: always() | |
| run: rm -rf $(bazel info repository_cache) | |
| - name: Save bazel cache | |
| uses: actions/cache/save@v4 | |
| # Only create a new cache entry if we're on the main branch or the build takes >3mins. | |
| # | |
| # NOTE: Even though `always()` evaluates to true, and `true && x == x`, | |
| # the `always() &&` prefix is not redundant! The call to `always()` has a | |
| # side effect, which is to override the default behavior of automagically | |
| # canceling this step if a previous step failed. | |
| # (Don't blame me, blame GitHub Actions!) | |
| if: always() && (github.ref_name == 'main' || env.duration > 180) | |
| with: | |
| path: "~/.cache/bazel" | |
| key: ${{ env.CACHE_KEY }}-${{ hashFiles('**/*.bazel*', '**/*.bzl') }}-${{ github.run_id }} |