Get HipChat notifications when GitHub has service issues. Now dependency-free!

github_status_hipchat_notify.rb

#!/usr/bin/env ruby

require 'net/https'
require 'json'

LAST_MESSAGE_FILE = "#{File.dirname(__FILE__)}/last_github_status.json"
HIPCHAT_API_KEY   = 'secret'
HIPCHAT_ROOM      = 'Notifications'

class GithubStatus
  BASE_URI = 'https://status.github.com/api'

  def current_status
    get_and_parse('/status.json')
  end

  def last_message
    get_and_parse('/last-message.json')
  end

  def messages
    get_and_parse('/messages.json')
  end

  def get_and_parse(path)
    uri = URI(self.class::BASE_URI + path)
    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = true
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE

    get = Net::HTTP::Get.new(uri.request_uri)
    response = http.request(get)
    JSON.parse(response.body)
  end
end

class HipchatClient
  BASE_URI = 'https://api.hipchat.com/v1'

  def initialize(api_key)
    @api_key = api_key
  end

  def send_message(from, room, message, color)
    params = {
      'from'    => from,
      'room_id' => room,
      'message' => message,
      'color'   => color
    }

    post('/rooms/message', params)
  end

  def post(path, params)
    uri = URI(self.class::BASE_URI + path + "?auth_token=#{@api_key}")
    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = true
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE

    post = Net::HTTP::Post.new(uri.request_uri)
    post.set_form_data(params)
    http.request(post)
  end
end

hipchat_client  = HipchatClient.new(HIPCHAT_API_KEY)
github_client   = GithubStatus.new
last_message    = JSON.parse(File.read(LAST_MESSAGE_FILE)) rescue {}
current_message = github_client.last_message

should_notify   = last_message['created_on'] != current_message['created_on'] &&
                  (current_message['status'] != 'good' || last_message['status'] != 'good')

if should_notify
  message = current_message['body']

  color = case current_message['status']
  when 'good'  then 'green'
  when 'minor' then 'yellow'
  when 'major' then 'red'
  end

  hipchat_client.send_message('GitHub Status', HIPCHAT_ROOM, message, color)
end

File.open(LAST_MESSAGE_FILE, 'w') { |f| f.write(current_message.to_json) }