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Merge pull request #4726 from kubernetes-client/copilot/add-bazel-support
Add Bazel build support with incremental artifact caching
2 parents 0e4d7f5 + 77ac9fa commit c09dad1

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‎.bazelrc‎

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# ============================================================
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# Default build flags for kubernetes-client/java
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# ============================================================
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# ---------------------------------------------------------------------------
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# Java toolchain configuration
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# ---------------------------------------------------------------------------
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# Build all Java targets at language level 11 by default.
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# Modules that require Java 17+ (spring, spring-aot) set javacopts per-target.
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build --java_language_version=11
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build --java_runtime_version=remotejdk_17
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build --tool_java_language_version=11
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build --tool_java_runtime_version=remotejdk_11
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# ---------------------------------------------------------------------------
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# Error Prone configuration
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# ---------------------------------------------------------------------------
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# Bazel's Java rules enable Error Prone by default. The checks fire on
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# pre-existing patterns in this codebase (e.g. DoubleBraceInitialization,
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# EqualsHashCode) that are not caught by the Maven build. Disable all
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# Error Prone checks so that the Bazel build stays consistent with Maven.
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build --javacopt=-XepDisableAllChecks
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# ---------------------------------------------------------------------------
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# Build settings
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# ---------------------------------------------------------------------------
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build --enable_platform_specific_config
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build --incompatible_strict_action_env=true
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# ---------------------------------------------------------------------------
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# Local disk cache
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# Speeds up repeated local builds by caching action outputs on disk.
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# Override the path by putting `build --disk_cache=<path>` in .bazelrc.user.
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# ---------------------------------------------------------------------------
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build --disk_cache=~/.cache/bazel-disk-cache
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# ---------------------------------------------------------------------------
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# CI configuration
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# Enable when running under GitHub Actions:
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# bazel build --config=ci ...
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# ---------------------------------------------------------------------------
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# The disk cache is intentionally left at its default path
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# (~/.cache/bazel-disk-cache) so the GitHub Actions cache step (configured in
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# .github/workflows/bazel.yml) can save and restore compiled action outputs
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# between runs for faster incremental builds.
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# Show full test output on failure.
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build:ci --test_output=errors
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# Avoid interactive prompts.
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build:ci --noshow_progress
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build:ci --show_result=0
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# ---------------------------------------------------------------------------
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# Remote cache configuration (opt-in)
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# To use a Bazel remote cache, create a .bazelrc.user file with:
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# build --config=remote-cache
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# build:remote-cache --remote_cache=grpcs://<your-cache-endpoint>
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# build:remote-cache --remote_header=x-auth-token=<token>
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# ---------------------------------------------------------------------------
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# (remote-cache config is user-supplied)
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# ---------------------------------------------------------------------------
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# User-local overrides (not committed)
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# ---------------------------------------------------------------------------
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try-import %workspace%/.bazelrc.user

‎.bazelversion‎

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7.4.1

‎.github/workflows/bazel.yml‎

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# Build and test the library with Bazel.
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#
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# Bazel's built-in action caching combined with GitHub Actions cache gives
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# incremental builds: only changed targets and their dependents are rebuilt.
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#
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# Cache layers used:
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# 1. Repository cache – downloaded JARs / external repositories
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# 2. Disk cache – action output cache (build artifacts)
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# Both are saved to GitHub Actions cache keyed on the OS, Bazel module lock,
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# and Maven artifact list so cache hits are maximized across identical runs.
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name: bazel
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on:
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push:
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branches: ["master", "release-**"]
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paths:
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- "**/*.java"
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- "**/BUILD.bazel"
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- "MODULE.bazel"
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- ".bazelversion"
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- ".bazelrc"
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- ".github/workflows/bazel.yml"
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pull_request:
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branches: ["master", "release-**"]
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paths:
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- "**/*.java"
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- "**/BUILD.bazel"
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- "MODULE.bazel"
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- ".bazelversion"
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- ".bazelrc"
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- ".github/workflows/bazel.yml"
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jobs:
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bazel-build-test:
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name: Bazel build & test (Java ${{ matrix.java }})
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runs-on: ubuntu-latest
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strategy:
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fail-fast: false
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matrix:
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java: ["11", "17", "21"]
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env:
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BAZELISK_SKIP_VERSION_CHECK: "1"
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steps:
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- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
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- name: Set up Java ${{ matrix.java }}
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uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
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with:
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distribution: temurin
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java-version: ${{ matrix.java }}
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# Install Bazelisk which reads the pinned version from .bazelversion.
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# Install into $HOME/.local/bin (no root required) and add it to PATH.
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- name: Install Bazelisk
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run: |
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mkdir -p "$HOME/.local/bin"
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curl -fsSL \
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https://github.com/bazelbuild/bazelisk/releases/download/v1.24.1/bazelisk-linux-amd64 \
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-o "$HOME/.local/bin/bazel"
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chmod +x "$HOME/.local/bin/bazel"
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echo "$HOME/.local/bin" >> "$GITHUB_PATH"
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# ----------------------------------------------------------------
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# Cache layers
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# The disk cache stores compiled action outputs; the repository cache
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# stores downloaded external files (JARs, etc.).
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# ----------------------------------------------------------------
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- name: Restore Bazel caches
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id: bazel-cache
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uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
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with:
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path: |
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~/.cache/bazel-disk-cache
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~/.cache/bazel/cache/repos/v1
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key: bazel-${{ runner.os }}-java${{ matrix.java }}-${{ hashFiles('MODULE.bazel', '.bazelversion', 'maven_install.json') }}
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restore-keys: |
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bazel-${{ runner.os }}-java${{ matrix.java }}-
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bazel-${{ runner.os }}-
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# Re-generate the Maven lock file so it is always consistent with
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# MODULE.bazel. The __INPUT_ARTIFACTS_HASH in the committed file is
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# intentionally set to -1 to signal that the file needs to be regenerated;
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# REPIN=1 overwrites it with the correct value. Once the artifact list
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# stabilises, subsequent runs where MODULE.bazel has not changed are fast
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# because rules_jvm_external short-circuits on an identical artifact list.
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- name: Pin Maven dependencies
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run: REPIN=1 bazel run @maven//:pin
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# ----------------------------------------------------------------
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# Build all core modules
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# ----------------------------------------------------------------
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- name: Build
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run: |
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bazel build --config=ci \
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//kubernetes:client-java-api \
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//proto:client-java-proto \
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//util:client-java \
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//fluent:client-java-api-fluent \
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//extended:client-java-extended
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# Spring modules require Java 17+; skip them on the Java 11 matrix leg.
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- name: Build Spring modules (Java 17+)
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if: matrix.java != '11'
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run: |
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bazel build --config=ci \
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//spring:client-java-spring-integration \
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//spring-aot:client-java-spring-aot-integration
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# ----------------------------------------------------------------
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# Test — run per-module test suites
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# ----------------------------------------------------------------
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- name: Test core modules
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run: |
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bazel test --config=ci \
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//kubernetes:tests \
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//util:tests \
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//extended:tests
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- name: Test Spring modules (Java 17+)
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if: matrix.java != '11'
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run: |
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bazel test --config=ci \
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//spring:tests

‎.gitignore‎

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kubernetes/bin
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kubernetes/swagger.json.unprocessed
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**/*.orig
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# Bazel build artifacts and symlinks
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bazel-*
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MODULE.bazel.lock

‎BUILD.bazel‎

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# Root BUILD file for kubernetes-client/java.
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# Individual library targets are defined in sub-packages.

‎MODULE.bazel‎

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"""
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Bazel MODULE for kubernetes-client/java.
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This enables building the library with Bazel in addition to Maven.
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Key features:
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- rules_jvm_external manages all Maven dependencies.
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- contrib_rules_jvm provides java_test_suite for JUnit 5 test discovery.
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- Remote-cache and disk-cache settings live in .bazelrc / .bazelrc.user.
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"""
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module(
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name = "kubernetes_client_java",
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version = "27.0.0-SNAPSHOT",
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compatibility_level = 1,
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)
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bazel_dep(name = "bazel_skylib", version = "1.7.1")
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bazel_dep(name = "rules_java", version = "7.12.2")
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bazel_dep(name = "rules_jvm_external", version = "6.7")
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bazel_dep(name = "contrib_rules_jvm", version = "0.27.0")
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# ---------------------------------------------------------------------------
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# Maven dependency management
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# ---------------------------------------------------------------------------
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maven = use_extension("@rules_jvm_external//:extensions.bzl", "maven")
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maven.install(
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artifacts = [
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# ---- core ----
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# Versions kept in sync with the property values in the root pom.xml.
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"jakarta.annotation:jakarta.annotation-api:3.0.0",
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"io.swagger:swagger-annotations:1.6.16",
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"com.squareup.okhttp3:okhttp:5.3.2",
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"com.squareup.okhttp3:okhttp-jvm:5.3.2",
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"com.squareup.okhttp3:logging-interceptor:5.3.2",
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"com.squareup.okio:okio:3.16.4",
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"com.squareup.okio:okio-jvm:3.16.4",
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"com.google.code.gson:gson:2.14.0",
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"com.fasterxml.jackson.core:jackson-databind:2.21.2",
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"com.fasterxml.jackson.core:jackson-core:2.21.2",
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"com.fasterxml.jackson.core:jackson-annotations:2.21",
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"io.gsonfire:gson-fire:1.9.0",
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"org.apache.commons:commons-lang3:3.20.0",
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"org.apache.commons:commons-collections4:4.5.0",
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"org.apache.commons:commons-compress:1.28.0",
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"commons-io:commons-io:2.22.0",
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"commons-codec:commons-codec:1.22.0",
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"org.yaml:snakeyaml:2.6",
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"org.slf4j:slf4j-api:2.0.17",
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"org.bouncycastle:bcpkix-jdk18on:1.84",
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"org.bouncycastle:bcprov-jdk18on:1.84",
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"com.google.protobuf:protobuf-java:4.34.1",
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"org.bitbucket.b_c:jose4j:0.9.6",
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"com.google.auth:google-auth-library-oauth2-http:1.46.0",
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"software.amazon.awssdk:auth:2.43.0",
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"software.amazon.awssdk:http-auth-aws:2.43.0",
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"software.amazon.awssdk:http-auth-spi:2.43.0",
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"software.amazon.awssdk:http-client-spi:2.43.0",
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"software.amazon.awssdk:sts:2.43.0",
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"software.amazon.awssdk:utils:2.43.0",
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"io.prometheus:simpleclient:0.16.0",
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"io.prometheus:simpleclient_httpserver:0.16.0",
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"com.bucket4j:bucket4j-core:8.10.1",
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"com.github.ben-manes.caffeine:caffeine:3.0.0",
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"com.flipkart.zjsonpatch:zjsonpatch:0.4.16",
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"org.jetbrains:annotations:26.1.0",
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"org.reflections:reflections:0.10.2",
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# ---- spring (Java 17+ modules) ----
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# spring-boot 4.0.6 transitively brings in spring-framework 7.0.x, but the
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# root pom.xml pins spring.version=6.2.12. Explicitly declare all
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# spring-framework modules at 6.2.12 and use maven.artifact() with
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# exclusions on the spring-boot artifacts so Coursier does not upgrade them.
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"org.springframework:spring-aop:6.2.12",
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"org.springframework:spring-beans:6.2.12",
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"org.springframework:spring-context:6.2.12",
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"org.springframework:spring-core:6.2.12",
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"org.springframework:spring-expression:6.2.12",
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"org.springframework:spring-test:6.2.12",
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# ---- test ----
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"org.junit.jupiter:junit-jupiter-api:5.13.4",
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"org.junit.jupiter:junit-jupiter-engine:5.13.4",
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"org.junit.jupiter:junit-jupiter-params:5.13.4",
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"org.junit.platform:junit-platform-launcher:1.13.4",
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"org.junit.platform:junit-platform-commons:1.13.4",
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"org.junit.platform:junit-platform-engine:1.13.4",
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"org.junit.platform:junit-platform-reporting:1.13.4",
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"org.mockito:mockito-core:5.23.0",
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"org.mockito:mockito-junit-jupiter:5.23.0",
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"uk.org.webcompere:system-stubs-jupiter:2.1.8",
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"uk.org.webcompere:system-stubs-core:2.1.8",
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"org.wiremock:wiremock:3.13.2",
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"org.awaitility:awaitility:4.3.0",
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"org.assertj:assertj-core:3.27.7",
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"ch.qos.logback:logback-classic:1.5.32",
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"ch.qos.logback:logback-core:1.5.32",
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],
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repositories = [
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"https://repo1.maven.org/maven2",
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"https://repo.spring.io/milestone",
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],
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fetch_sources = False,
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lock_file = "//:maven_install.json",
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)
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# Spring Boot 4.0.6 artifacts declared with exclusions to pin spring-framework at
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# 6.2.12 (matching pom.xml spring.version) instead of the 7.0.x that spring-boot
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# 4.0.x normally pulls in.
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_SPRING_FRAMEWORK_EXCLUSIONS = [
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"org.springframework:spring-aop",
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"org.springframework:spring-beans",
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"org.springframework:spring-context",
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"org.springframework:spring-core",
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"org.springframework:spring-expression",
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"org.springframework:spring-test",
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]
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maven.artifact(
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artifact = "spring-boot",
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group = "org.springframework.boot",
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version = "4.0.6",
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exclusions = _SPRING_FRAMEWORK_EXCLUSIONS,
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)
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maven.artifact(
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artifact = "spring-boot-autoconfigure",
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group = "org.springframework.boot",
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version = "4.0.6",
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exclusions = _SPRING_FRAMEWORK_EXCLUSIONS,
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)
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maven.artifact(
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artifact = "spring-boot-actuator",
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group = "org.springframework.boot",
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version = "4.0.6",
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exclusions = _SPRING_FRAMEWORK_EXCLUSIONS,
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)
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maven.artifact(
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artifact = "spring-boot-test",
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group = "org.springframework.boot",
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version = "4.0.6",
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exclusions = _SPRING_FRAMEWORK_EXCLUSIONS,
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)
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use_repo(maven, "maven")

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