a ruby script for speaking the hudson status in campfire with win/fail images

campfire.rb

# this is a little messy but it works.
# ran as a post-build task:  ruby /path/to/script/campfire.rb 2>&1 >/dev/null &

require 'rubygems'
require 'uri'
require 'net/http'
require 'tinder'


IMAGE_TRANSLATION = { 'OK' => 'win', 'FAILURE' => 'fail' }
class BuildInfo
  attr_accessor :build, :most_recent_build, :status
  TRANSLATION = { 'SUCCESS' => "OK" }

  def initialize
    @build = Dir.pwd.match(/jobs\/(.*?)\/workspace/)[1]
    @most_recent_build = Dir.entries(Dir.pwd + "/../builds/").reject{|c| c.match(/[\.-]/)}.map(&:to_i).max
    @status = determine_status
  end

  def failure_or_new_success?
    @status != 'OK' || last_status != 'OK'
  end

  def determine_status
    last_line = ''
    sleep_count = 0
    while last_line !~ /^Finished:/
      sleep 1
      sleep_count += 1
      exit if sleep_count > 60
      last_line = File.readlines(Dir.pwd + "/../builds/#{@most_recent_build}/log").last.strip
    end
    the_status = last_line.split(' ').last
    TRANSLATION[the_status] || the_status
  end

  def last_status_file
    "last_status_#{@build}.txt"
  end

  def last_status
    if File.exist?(last_status_file)
      return File.read(last_status_file)
    end
  end

  def write_status
    File.open(last_status_file, 'w'){|f| f.print @status}
  end

  def log_url
    "http://hudson.test.patientslikeme.com/job/#{@build}/#{@most_recent_build}/consoleText"
  end
end

# grab the image once so everyone sees the same thing
def random_image(my_status)
  kind = IMAGE_TRANSLATION[my_status]
  if kind
    Net::HTTP.get(URI.parse("http://buildmacros.semanticart.com/random/#{kind}.txt")) rescue nil
  end
end

info = BuildInfo.new


campfire = Tinder::Campfire.new 'plm', :token => '_YOUR_TOKEN_HERE'
room = campfire.rooms.detect{|room| room.name == "YOUR CAMPFIRE ROOM"}

room.speak "#{info.build} #{info.status}:  #{info.log_url}"

# only send a message if it is a broken build or if the build is newly fixed
# i.e. berate often but praise rarely :)
if info.failure_or_new_success?
  my_random_image = random_image(info.status)
  room.speak my_random_image if my_random_image
end

info.write_status