homebrew-core/Formula/consul-template.rb

require "language/go"

class ConsulTemplate < Formula
  desc "Generic template rendering and notifications with Consul"
  homepage "https://github.com/hashicorp/consul-template"
  url "https://github.com/hashicorp/consul-template.git",
      :tag => "v0.16.0",
      :revision => "efa462daa2b961bff683677146713f4008555fba"
  head "https://github.com/hashicorp/consul-template.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "4a5ed83931505027e4d40f774fb791254e26a8fa232b8932a54cc77665962d38" => :sierra
    sha256 "fd8408ce1b01c0fd07047013a2b658e6ff792c88aad842cf9d978cb90d456eb2" => :el_capitan
    sha256 "844950502c5edb1f0b9797f3dc4d92241616982bfdf272e92c5c42883e53a6c4" => :yosemite
  end

  depends_on "go" => :build

  go_resource "github.com/mitchellh/gox" do
    url "https://github.com/mitchellh/gox.git",
        :revision => "c9740af9c6574448fd48eb30a71f964014c7a837"
  end

  # gox dependency
  go_resource "github.com/mitchellh/iochan" do
    url "https://github.com/mitchellh/iochan.git",
        :revision => "87b45ffd0e9581375c491fef3d32130bb15c5bd7"
  end

  def install
    ENV["GOPATH"] = buildpath

    dir = buildpath/"src/github.com/hashicorp/consul-template"
    dir.install buildpath.children

    Language::Go.stage_deps resources, buildpath/"src"
    ENV.prepend_create_path "PATH", buildpath/"bin"
    cd("src/github.com/mitchellh/gox") { system "go", "install" }

    cd dir do
      system "make", "updatedeps" if build.head?
      system "make", "dev"
      system "make", "test"
    end

    bin.install "bin/consul-template"
  end

  test do
    (testpath/"template").write <<-EOS.undent
      {{"homebrew" | toTitle}}
    EOS
    system bin/"consul-template", "-once", "-template", "template:test-result"
    assert_equal "Homebrew", (testpath/"test-result").read.chomp
  end
end