© Copyright 2010–2011 C42 Engineering. All Rights Reserved.

Goldberg is an alternative to CruiseControl.rb that adheres to the same principles of being simple to use and easy to contribute to. It currently meets all common use cases of a lightweight CI server, and we plan to add more over time. A large majority of projects should be able to switch from CC.rb to Goldberg with little or no effort.

Goldberg can be used to continuously integrate codebases built using any language, not just Ruby.

Visit goldberg.c42.in to see a live Goldberg server.

• Ruby - CRuby 1.8.7/1.9.2 and JRuby 1.6.2 and upward are supported
• Git (svn, hg and bzr are currently unsupported, but are in the roadmap)
• RVM if you want to be able to run projects on different rubies.
• Your project should have a Gemfile for Bundler.

Goldberg is currently tested only on Linux/Mac OS X but should run on JRuby on Windows.

   # If you're on Ubuntu, you might need:
   sudo apt-get install sqlite3 libsqlite3-dev libncursesw5-dev

   git clone git://github.com/c42/goldberg.git
   cd goldberg
   bundle install
   rake db:migrate

We suggest that Goldberg should be used behind apache, nginx or any such web server with passenger, unicorn or mongrel. If you don't have a setup that monitors and restarts processes, you should use a process monitoring tool like God or Monit to manage the server processes & restart them if they happen to die.

A sample god script file config/god-script.rb is available with Goldberg. Details for setting up God can be found at [http://god.rubyforge.org/]

   bin/goldberg add <url> <name> [--branch <branch_name>]

By default it assumes the master branch. If you want to build on any other branch, use the -b --branch flag to specify it. The default command is rake, but you can also use "rake db:migrate && rake spec" if you have a rails project to build.

   bin/goldberg remove <name>

In development mode simply run:

   rails server

This will also start a daemon for building projects.

In production mode, the web server & the build poller runs in different processes. The web server will have to be set up like any other Rails/Rack application. The poller will have to be run using:

   # Start just the polling/building without a front-end
   bin/goldberg start_poller

There's a god-script under config directory which can be used to start a poller as a daemon process monitored by God

Goldberg generates feeds that work with all CruiseControl-compatible monitors like CCMenu (mac), BuildNotify (linux) & CCTray (windows). The feed is located in the root and is named cc.xml (for finicky monitors we also have cctray.xml & XmlStatusReport.aspx). eg: cc.xml

Goldberg will be checking out your code in ~/.goldberg. If you want to override this create an environment variable called GOLDBERG_PATH.

You can configure the poller by copying the config/goldberg.yml.sample to config/goldberg.yml.

By default, the poller is configured to poll every 10 seconds. Even if you click on “force build,” it actually just sets a flag in DB for poller to build the project irrespective of the updates. If you want to it to do a build immediately after clicking on “force build”, then change the frequency to 1 second. You can also directly make an http POST to '/projects/:project_name/builds' to force a new build.

PS: Changing the frequency of poller to 1 second will not cause git calls every one second, as the project controls the frequency at which it should be polled as explained below.

Every project in goldberg can have its own custom configuration by means of adding (either on goldberg instance or by checking it in with the codebase) goldberg_config.rb at the root of your codebase. As of now only the following configurations can be overridden, but going further this configuration will be used to configure even more.

  #Goldberg configuration
  Project.configure do |config|
    config.frequency = 20
    config.ruby = '1.9.2' # Your server needs to have rvm installed for this setting to be considered
    config.environment_variables = {"FOO" => "bar"}
    config.after_build Proc.new { |build, project| `touch ~/Desktop/actually_built`}
    config.timeout = 10.minutes
    config.command = 'make' #to be used if you're using anything other than rake
  end

If you want the project to be checked for updates every 5 seconds, you will need to change the poller frequency to less than 5 seconds using goldberg.yml as mentioned above.

Goldberg provides on_build_completion, on_build_failure, on_build_success & on_build_fixed callbacks, which can be used to extend Goldberg and add functionality that is not provided out of the box. All the callbacks have access to the build that was completed & an object of email notification, which can be used to configure the mails to be sent on these events. The on_build_completion callback has an extra parameter previous_build_status.

The callbacks are part of goldberg_config.rb

 #Goldberg callbacks
Project.configure do |config|

  config.on_build_completion do |build,notification,previous_build_status|
    # sending mail
    notification.from('[email protected]').to('[email protected]').with_subject("build for #{build.project.name} #{build.status}").send
  end

  config.on_build_success do |build,notification|
    # code to deploy on staging
  end

  config.on_build_failure do |build,notification|
    # post to IRC channel & send mail
  end

  config.on_build_fixed do |build,notification|
    # post to IRC channel & deploy on staging
  end
end

Assume you want to post a message on IRC channel & there is a gem that can be used to do so, you can simply require the gem at the start of the project_config.rb file & write the code to post message in any of the callbacks.

  # To get man page style help
  ./bin/goldberg help [command]

• Twitter: @GoldbergCI
• IRC: #goldberg

• Srushtivratha Ambekallu (srushti) @srshti
• Jasim A Basheer (jasim)
• Saager Mhatre (dexterous)
• Tejas Dinkar (gja)
• Niranjan Parajape (achamian)
• Todd Sedano (professor)
• Drew Olson (drewolson)
• Aakash Dharmadhikari (aakashd)
• Rohit Arondekar (rohit)
• Arpan Chinta (arpancj)