Twirl Template Rules for Bazel

Travis	Doc
	Stardoc

Overview

rules_twirl compiles Twirl templates to Scala, so they can be used with rules_scala.

For more information about Twirl templates, see the Play Twirl documentation.

Installation

Create a file called at the top of your repository named WORKSPACE and add the following snippet to it.

# update version as needed
rules_twirl_version = "ae15eba1647917daf1cf6cff160112cbc72ecc9d"
http_archive(
  name = "io_bazel_rules_twirl",
  sha256 = "5ac0c813f23d616ab78e1fda209253310d30458f7b30451010a9984876de2bbc",
  url = "https://github.com/lucidsoftware/rules_twirl/archive/%s.zip"%rules_twirl_version,
  type = "zip",
  strip_prefix= "rules_twirl-%s" % rules_twirl_version
)

This installs rules_twirl to your WORKSPACE at the specified commit. Update the commit as needed.

Stardoc Documentation

http://lucidsoftware.github.io/rules_twirl/

Stardoc is replacing Skydoc and is currently under development. Doc is likely going to look funny for a while.

Updating Stardoc

Stardoc is automatically updated on build merged into the master branch. To update the documentation, please submit a pull request. The doc will be updated when it is merged.

Deploying documentation

The Stardoc site for rules_twirl is deployed from the gh-pages branch. That branch is deployed with each build of the master branch.

Usage

The twirl_templates rule compiles Twirl templates to a source jar that can be used with the rules_scala rules. For example,

twirl_templates(
  name = "twirl-templates",
  source_directory = "app",
  srcs = glob(["app/**/*.scala.html"])
    + glob(["app/**/*.scala.xml"])
    + glob(["app/**/*.scala.js"])
    + glob(["app/**/*.scala.txt"]),
)

scala_binary(
  name = "foo-service",
  srcs = glob(["app/**/*.scala"]) + [":twirl-templates"],
  main_class = "foo.server.RunServer",
  deps = [...]
  )
)

See the Stardoc documentation for the full list of options for twirl_templates.

Use with the Play Framework

twirl_templates can be used with the rules_play_routes to run a Play Framework Service. For example

twirl_templates(
  name = "twirl-templates",
  source_directory = "app",
  include_play_imports = True,
  srcs = glob(["app/**/*.scala.html"])
    + glob(["app/**/*.scala.xml"])
    + glob(["app/**/*.scala.js"])
    + glob(["app/**/*.scala.txt"]),
  additional_imports = [...],
)

play_routes(
  name = "play-routes",
  srcs = ["conf/routes"] + glob(["conf/*.routes"]),
  include_play_imports = True,
  generate_reverse_router = True,
  routes_imports = [...],
)

scala_binary(
  name = "foo-service",
  srcs = glob(["app/**/*.scala"])  + [":twirl-templates", ":play-routes"],
  visibility = ["//visibility:public"],
  main_class = "play.core.server.ProdServerStart",
  resources = ["conf/logback.xml"] + glob(["conf/resources/**/*"]),
  resource_strip_prefix = native.package_name(),
  classpath_resources = ["conf/application.conf"],
  jvm_flags = [
  	"-Dhttp.port=9000",
  	"-Dapplication.name=foo-service",
  ],
  deps = [...],
)

Development

Command Line Twirl Compiler

This project consists of the Twirl Bazel rules and a command line Twirl compiler. The command line compiler can be built with

bazel build //twirl-compiler

It can be run with

bazel run //twirl-compiler

Testing

All tests can be run using

test/run_all_tests.sh

They can also be run using

bazel test //test/...

CI

The CI config in tools/bazel.rc and other options in .bazelrc.travis are used during CI builds.

Skylint

Skylint is run during CI builds. To run it locally use

tools/skylint.sh

Faqa/rules_twirl