class MyJob
  extend Resque::Plugins::Progress
  def self.perform(meta_id, *args)
    (0..9).each do |i|
      at(i, 10, "Lifted \#{num} heavy things. \#{10-num} more to go!")
      heavy_lifting(i)
    end
	at(10, 10, "Finished lifting everything. Kthxbai!")
  end
end
meta0 = MyJob.enqueue('stuff')
meta0.progress.num_complete # => 0
meta0.progress.total # => 10
meta0.progress.percent # => 100
meta0.progress.message # => nil
# later
meta1 = MyJob.get_meta('03c9e1a045ad012dd20500264a19273c')
meta1.finished? # => false
meta1.progress.num_complete # => 4
meta1.progress.total # => 10
meta1.progress.percent # => 40
meta1.progress.message # => 'Lifted 4 heavy things. 6 more to go!'