grafana formula, in progress

grafana.rb

require "language/go"

class Grafana < Formula
  desc "Gorgeous metric viz, dashboards & editors for Graphite, InfluxDB & OpenTSDB."
  homepage "https://grafana.org"
  url "https://github.com/grafana/grafana/archive/v3.0-beta5.tar.gz"
  version "3.0-beta5"
  sha256 "db9fcc0f4d90236d0cdaba2ab1ddd06bc59264aff93ead5c3a1b680804c8f8cd"

  head "https://github.com/grafana/grafana.git"

  depends_on "go" => :build
  depends_on "nodejs" => :build

  def install
    ENV.prepend_path "PATH", "#{Formula["node"].opt_libexec}/npm/bin"
    ENV["GOPATH"] = buildpath
    grafana_path = buildpath/"src/github.com/grafana/grafana"
    grafana_path.install Dir["*"]
    grafana_path.install ".jscs.json", ".jsfmtrc", ".jshintrc", ".bowerrc"

    Language::Go.stage_deps resources, buildpath/"src"
    
    cd grafana_path do
      # Might do it differently for head vs. release
      system "go", "run", "build.go", "setup"
      system buildpath/"bin/godep", "restore"
      #(buildpath/"src/github.com/grafana").mkpath
      #FileUtils.ln_s buildpath, grafana_path
      system "go", "run", "build.go", "build"
      system "npm", "install"
      system "npm", "install", "grunt-cli"
      #system "node_modules/grunt-cli/bin/grunt"
    end

    bin.install grafana_path/"bin/grafana-cli"
    bin.install grafana_path/"bin/grafana-server"
    (etc/"grafana").mkpath
    (var/"lib/grafana").mkpath
    (share/"grafana").mkpath
    (share/"grafana").install Dir["conf", "public", "vendor"]
    etc.install grafana_path/"conf/sample.ini" => "grafana/grafana.ini"
  end

  test do
    # `test do` will create, run in and delete a temporary directory.
    #
    # This test will fail and we won't accept that! It's enough to just replace
    # "false" with the main program this formula installs, but it'd be nice if you
    # were more thorough. Run the test with `brew test grafana`. Options passed
    # to `brew install` such as `--HEAD` also need to be provided to `brew test`.
    #
    # The installed folder is not in the path, so use the entire path to any
    # executables being tested: `system "#{bin}/program", "do", "something"`.
    system "false"
  end
end

system "node_modules/grunt-cli/bin/grunt" this should called with the argument "build" (that is grunt build) , so a an optimized build is generated ,

system "node_modules/grunt-cli/bin/grunt", "build"

we might need a grafana-server start script, similar to an initd script for linux, that sets the correct paths.
grafana-server
--config=${CONF_FILE}
--pidfile=${PID_FILE}
cfg:default.paths.logs=${LOG_DIR}
cfg:default.paths.data=${DATA_DIR}
cfg:default.paths.plugins=${PLUGINS_DIR}

(Also grunt shouldn't be commented out, obviously; that was from when the grunt stuff was blowing up.)

I was cribbing from the README, so that's why those steps are that way. I'll adjust accordingly and see how it goes.

For the start script, I was going to try adding just a plist (like influxdb has at https://github.com/Homebrew/legacy-homebrew/blob/master/Library/Formula/influxdb.rb (scroll down)), but it may be necessary to have an additional wrapper to get the right working directory.

not sure what a plist list, but as long as it starts grafana-server with some options for config file and
cfg:default.paths.logs=${LOG_DIR}
cfg:default.paths.data=${DATA_DIR}
cfg:default.paths.plugins=${PLUGINS_DIR}

it should work fine

A plist is launchctl's init config, basically. It should be fine, assuming (which seems likely) that it can chdir to /usr/local/share/grafana.