pre_ci_build.rb

#!/usr/bin/env ruby
require "optparse"
require "uri"

class PreCiRunner
  DEFAULTS = {
    :jobs => [:wimdu, :wimdu_js, :wimdu_jasmine, :wimdu_guard_jasmine, :wimdu_checkout]
  }

  def initialize(attributes = {})
    @attributes = DEFAULTS.merge(attributes)
    @original_branch = current_branch
    @branch_to_build = generate_branch_name
  end

  attr_reader :original_branch, :branch_to_build

  def jenkins_url
    @attributes.fetch(:jenkins_url)
  end

  def trigger_build(suffix = nil)
    url = "#{job_url(suffix)}/buildWithParameters?GIT_SHA=#{branch_to_build}"
    if num = @attributes[suffix.to_sym]
      url << "&PARALLEL_TEST_PROCESSORS=#{num}"
    end
    puts "sending to url #{url}"
    system "curl --insecure -i '#{url}'"
  end

  def job_url(suffix)
    [jenkins_url.gsub(/\/$/, ''), 'job', suffix].compact.join('/')
  end
  
  def hostname
    URI(jenkins_url).hostname
  end

  def whoami
    `whoami`.strip
  end

  def generate_branch_name
    "build_#{whoami}_%s" % [Time.now.strftime("%Y%m%d%H%M%S")]
  end

  def current_branch
    `git branch | grep "* " | cut -d " " -f 2`.strip
  end

  def jobs
    @attributes.fetch(:jobs)
  end

  def run
    system "git checkout -b #{branch_to_build}"
    system "git push #{hostname} #{branch_to_build}"
    jobs.each do |job|
      trigger_build job
    end
    system "git checkout #{original_branch}"
    system "git branch -D #{branch_to_build}"

    puts "pushed #{branch_to_build}"
  end
end

MASTER_NUMBERS = {
  wimdu_js: 4,
  wimdu: 4,
}

options = {
  jenkins_url: ENV["PRE_CI_URL"],
}

opts = OptionParser.new do |o|
  o.on('-u', '--jenkins-url JENKINS_URL', String, "Jenkins on which to trigger the build. default: ENV['PRE_CI_URL']") do |jenkins_url|
    options[:jenkins_url] = jenkins_url
  end

  o.on('--jobs JOBS', Array, 'Default is to run all jobs') do |jobs|
    options[:jobs] = jobs
  end

  o.on('--master', 'User same config as for master') do
    options.merge!(MASTER_NUMBERS)
  end

  o.on('-j NUM', '--js-processes', Integer, 'Number of parallel js processes') do |num|
    options[:wimdu_js] = num
  end

  o.on('-n NUM', '--default-processes', Integer, 'Number of parallel non-js processes') do |num|
    options[:wimdu] = num
  end
end

opts.parse(ARGV)

if !options[:jenkins_url]
  puts opts
else
  runner = PreCiRunner.new(options)
  runner.run
end