Sinatra based Github hook that appends commit information to JIRA tickets

config.yml

prefix: /github_hook
www:
  username: github
  password: github
  url: http://localhost:7080/jira
  key: WEB

jira_github_hook.rb

require 'rubygems'
require 'sinatra'
require 'json'
require 'jira4r'

CONFIG = YAML.load_file('config.yml')

if CONFIG.keys.include?('prefix')
  PREFIX = CONFIG['prefix']
end

before do
  if defined?(PREFIX)
    request.path_info = request.path_info.gsub(/^#{PREFIX}/, '')
  end
end

post '/' do
  payload = JSON.parse(params[:payload])
  return unless payload.keys.include?('repository')
  @repo = payload['repository']['name']
  jira = Jira4R::JiraTool.new(2, CONFIG[@repo]['url'])
  jira.login(CONFIG[@repo]['username'], CONFIG[@repo]['password'])
  payload['commits'].each do |c|
    next unless c['message'].match(/#{CONFIG[@repo]['key']}-([0-9]+)/)
    ticket_id = $1
    comment = Jira4R::V2::RemoteComment.new
    comment.body = "#{c['message']} by #{c['author']['name']} - commit: #{c['url']}"
    jira.addComment("#{CONFIG[@repo]['key']}-#{ticket_id}", comment)
  end
  200
end