mesos.rb

require 'formula'

class Mesos < Formula
  homepage 'http://incubator.apache.org/mesos/'
  head 'https://git-wip-us.apache.org/repos/asf/mesos.git'
  depends_on 'autoconf' => :build
  depends_on 'automake' => :build
  depends_on 'libtool'  => :build
  depends_on 'zookeeper'

  def java_ok?
    `java -version 2>&1 | fgrep -q 'java version "1.7.'`
    $?.success?
  end

  def install
    ENV.j1
    if not java_ok?
      onoe <<-EOS.undent
        Unable to find an acceptable version of Java for building.
        Mesos is only known to build against Oracle JAVA 7 on OS X:

          http://www.oracle.com/technetwork/java/javase/downloads/index.html
          
        Be sure to download the JDK and not the JRE.
      EOS
      exit 1
    end
    system 'env', 'CC=gcc', 'CXX=g++', './bootstrap'
    system 'env', 'CC=gcc', 'CXX=g++', './configure'
    system 'make'
    system 'make', 'install'
  end

  def caveats
    <<-EOS.undent
    # Launching a basic Mesos cluster:
    
     ## Start the Zookeeper server.
     :; zkServer start /usr/local/etc/zookeeper/zoo_sample.cfg

     ## Start a Mesos master node.
     :; /usr/local/sbin/mesos-master --zk=zk://localhost:2181/mesos

     ## Start a Mesos slave node.
     :; /usr/local/sbin/mesos-slave --master=zk://localhost:2181/mesos
     
    # Unfortunately, you still need to install Apple's JDK 6 in
    # order to actually run Mesos.
    EOS
  end
end