Add Bazel CI workflow and buildifier formatting

.github/actions/setup-docker-env/action.yml

@@ -0,0 +1,24 @@
+name: Setup Docker Environment
+description: Build dev image and create required host directories
+
+runs:
+  using: composite
+  steps:
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Build development Image
+      uses: docker/build-push-action@v6
+      with:
+        context: "${{ github.workspace }}/docker/development"
+        push: false
+        tags: openbsw-development:local
+        outputs: type=docker
+        cache-from: type=gha
+        cache-to: type=gha,mode=max,ignore-error=true
+
+    - name: Create Bazel cache directories
+      shell: bash
+      run: |
+        mkdir -p "${BAZEL_CACHE_DIR:-${XDG_CACHE_HOME:-${HOME}/.cache}/bazel}"
+        mkdir -p "${BAZELISK_CACHE_DIR:-${XDG_CACHE_HOME:-${HOME}/.cache}/bazelisk}"

.github/workflows/bazel.yml

@@ -0,0 +1,74 @@
+name: Bazel Build and Test
+
+on:
+  workflow_call:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  bazel-ci:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
+
+      # Fails if bazel --version fails in the docker container
+      - name: Bazel smoke test
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel version
+
+      # Fails if MODULE.bazel.lock is stale (invalid versions, yanked modules, extension errors).
+      # Fix locally with: bazel mod tidy --lockfile_mode=update
+      - name: Check Bazel lockfile
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel mod deps --lockfile_mode=error
+
+      # Fails if any BUILD/.bzl file is not formatted correctly.
+      # Fix locally with: bazel run //:format_fix
+      - name: Check Bazel formatting
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel run //:format_check
+
+      # Parses all BUILD files and resolves the dependency graph without compiling.
+      # Catches syntax errors, invalid labels, missing targets, and dependency cycles.
+      - name: Query all targets
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel query //...
+
+      # Compiles all targets for the host platform (Linux/posix).
+      # Targets with incompatible platform constraints are skipped automatically.
+      - name: Build all targets (host platform)
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel build //...
+
+      # Cross-compiles all targets for the example embedded platform using arm-none-eabi-gcc.
+      - name: Build all targets (s32k148 platform)
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel build --config=s32k148 //...
+
+      # Builds and runs all test targets. Exit code 4 ("no tests found") needs to be treated as
+      # success until at least a single test exists.
+      - name: Run all tests
+        run: >-
+          DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null
+          docker compose run --rm development
+          bazel test //... || exit_code=$?;
+          [ "${exit_code:-0}" -eq 0 ] || [ "${exit_code}" -eq 4 ] || exit "${exit_code}"

.github/workflows/build.yml

@@ -84,19 +84,8 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        id: build-docker-development
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max,ignore-error=true
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Run the build.py inside the docker container
         run: >-

.github/workflows/clang-tidy.yml

@@ -52,21 +52,8 @@ jobs:
           --event-path "${GITHUB_EVENT_PATH}" --output-file .clang-tidy-diff-files.txt
           --github-output "${GITHUB_OUTPUT}"
 
-      - name: Set up Docker Buildx
-        if: ${{ steps.scope.outputs.mode == 'full' || steps.scope.outputs.has_changes == 'true' }}
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        if: ${{ steps.scope.outputs.mode == 'full' || steps.scope.outputs.has_changes == 'true' }}
-        id: build-docker-development
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max,ignore-error=true
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Run the ${{ matrix.platform }} ${{ matrix.config }} build inside the docker container
         if: ${{ steps.scope.outputs.mode == 'full' || steps.scope.outputs.has_changes == 'true' }}

.github/workflows/code-coverage.yml

@@ -15,19 +15,8 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        id: build-docker-development
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max,ignore-error=true
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Run the code_coverage.py inside the docker container
         run: >-

.github/workflows/format.yml

@@ -9,18 +9,8 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max,ignore-error=true
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Run the format.py inside the docker container
         run: DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null docker compose run --rm development python3 .ci/format.py

.github/workflows/puncover_tool.yml

@@ -13,19 +13,8 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        id: build-docker-development
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max,ignore-error=true
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Cache CMake files
         id: cache-cmake

.github/workflows/rim.yml

@@ -9,18 +9,8 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Run the third party libraries check via RIM inside the docker container
         run: DOCKER_UID=$(id -u) DOCKER_GID=$(id -g) DOCKER_HISTORY=/dev/null docker compose run --rm development rim status -w -d --verify-clean

.github/workflows/run-pytest-on-posix.yml

@@ -29,18 +29,8 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build development Image
-        uses: docker/build-push-action@v6
-        with:
-          context: "{{defaultContext}}:docker/development"
-          push: false
-          tags: openbsw-development:local
-          outputs: type=docker
-          cache-from: type=gha
-          cache-to: type=gha,mode=max,ignore-error=true
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-env
 
       - name: Set up virtual ethernet interface
         run: |

.treefmt.toml

@@ -43,3 +43,17 @@ includes = [ "*.c", "*.cc", "*.cpp", "*.h", "*.hh", "*.hpp" ]
 command = "cmake-format"
 options = [ "-i" ]
 includes = [ "**/CMakeLists.txt", "*.cmake", "CMakeLists.txt" ]
+
+[formatter.buildifier]
+command = "buildifier"
+options = ["-lint=fix"]
+includes = [
+  "*.bzl",
+  "*.sky",
+  "BUILD",
+  "BUILD.bazel",
+  "MODULE.bazel",
+  "REPO.bazel",
+  "WORKSPACE",
+  "WORKSPACE.bazel",
+]

BUILD.bazel

@@ -0,0 +1,18 @@
+load("@buildifier_prebuilt//:rules.bzl", "buildifier")
+
+buildifier(
+    name = "format_check",
+    diff_command = "diff",
+    # Exclude vendored googletest instance from format checks
+    exclude_patterns = ["./libs/3rdparty/googletest/**"],
+    lint_mode = "warn",
+    mode = "diff",
+)
+
+buildifier(
+    name = "format_fix",
+    # Exclude vendored googletest instance from format checks
+    exclude_patterns = ["./libs/3rdparty/googletest/**"],
+    lint_mode = "fix",
+    mode = "fix",
+)

MODULE.bazel

@@ -7,6 +7,8 @@ bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_cc", version = "0.2.17")
 bazel_dep(name = "bazel_skylib", version = "1.9.0")
 
+bazel_dep(name = "buildifier_prebuilt", version = "8.5.1.1", dev_dependency = True)
+
 register_toolchains(
     "//bazel/toolchain:cc_toolchain_arm_none_eabi_gcc",
 )