Print aggregate resource lists in older versions of PuppetDB

resource_print.rb

#!/opt/puppet/bin/ruby
require 'net/http'
require 'uri'
require 'json'

def cputs(string)
  puts "\033[1m#{string}\033[0m"
end

check_resource = ARGV[0]

uri = URI("http://localhost:8080/v3/resources/#{check_resource.capitalize}")
response = Net::HTTP.get_response(uri)
resources = JSON.parse(response.body)

nodes = Hash.new
resources.each do |resource|
  (nodes[resource['title']] ||= []) << resource['certname']
end

nodes.each do |title,node_list|
  puts '-' * 80
  cputs title
  puts '-' * 80
  puts node_list.join("\n")
end