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A turn-key template repository to develop Java code using Bazel, with prepopulated common dependencies.

Try it

# Run the test, which first builds exatly everything needed
$ bazel test //src/test/java/foo:FooTest

# Or just build
$ bazel build //src/main/java/foo:Foo

This compiles ./Foo.java using the java_library defined in ./BUILD.

Created using

Assuming you're in the root of this repository,

ROOT=$(pwd)
wget https://github.com/johnynek/bazel-deps/archive/master.zip
unzip master.zip
pushd bazel-deps-master
bazel build //src/scala/com/github/johnynek/bazel_deps:parseproject_deploy.jar  # should take around 1 minute
./gen_maven_deps.sh generate -r "$ROOT" -d maven_deps.yaml -s thirdparty/workspace.bzl
popd

Adding New Dependencies

Suppose you want to use org.reactivestreams:reactive-streams:jar:1.0.1. Add the following to the end of maven_deps.yaml (indentation is important):

  org.reactivestreams:
    reactive-streams:
      version: "1.0.1"
      lang: java

Then follow the instructions in "Created using", above. After running, you should see a new file named thirdparty/jvm/org/reactivestreams/BUILD.

Things I'm unhappy with in this example

  1. "thirdparty" should be named "third_party", which is blocked on bazelbuild/bazel#3639
  2. We shouldn't use bind() - instead, we should reference the maven jars directly. We actually don't even need a java_library in thirdparty/ - we can use java_import directly on the jars we get from maven_jar.
  3. Configuring annotation prcessors is manual (bazeltools/bazel-deps#62)
  4. Test-only dependencies (such as //thirdparty/jvm/junit:junit) should be marked have testonly = 1, lest they mistakenly end up in production code.