dashing-heroku.md

Add the following to your Gemfile:

gem 'heroku-api'

Put heroku.rb in your jobs folder and add the contents of heroku.html into your layout.

heroku.html

<li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
  <div data-id="heroku_dyno_web" data-view="Meter" data-title="Web Dynos" data-min="0" data-max="10"></div>
</li>

<li data-row="1" data-col="2" data-sizex="1" data-sizey="1">
  <div data-id="heroku_dyno_worker" data-view="Meter" data-title="Workers" data-min="0" data-max="10"></div>
</li>

heroku.rb

require 'heroku-api'

key = ENV['HEROKU_API_KEY']
app_name = ENV['HEROKU_APP_NAME']

heroku = Heroku::API.new(:api_key => key)

SCHEDULER.every '15s', :first_in => 0 do |job|
  ps = heroku.get_ps(app_name)
  dynos = ps.body.map { |p| p['process'] }
  process_counts = dynos.reduce({}) do |hash, dyno|
    process, i = dyno.split(".")
    hash[process] ||= 0
    hash[process] += 1
    hash
  end

  process_counts.each do |ps, n|
    send_event("heroku_dyno_#{ps}", { value: n })
  end
end