Checks all your apps - returns those that have an add-on matching the name in the regular expression.

check-for-addon.rb

#!/usr/bin/env ruby
 
# gem install 'heroku-api'
 
require 'rubygems'
require 'heroku-api'

ADDON=/memcache.*/
 
api_key = `heroku auth:token`
heroku = Heroku::API.new(:api_key => api_key)
 
# My apps

puts "working" 
apps = heroku.get_apps.body
puts "processing #{apps.size} apps"
apps_summary = apps.map do |app|
  app_name = app['name']
  addons = heroku.get_addons(app_name).body
  filtered = addons.map{|ao| ao['name']}.select{|an| an =~ ADDON}
  puts "#{app_name} - #{filtered}" if !filtered.empty?
end
puts "done"