node_statuses.rb

#!/opt/puppet/bin/ruby

require 'net/http'
require 'json'

events_query = URI.encode_www_form(
  'query'        => '["=","latest-report?",true]',
  'summarize-by' => 'certname',
  'count-by'     => 'certname'
)

events_uri = URI::HTTP.build(
  :host  => 'localhost',
  :port  => 8080,
  :path  => '/v3/event-counts',
  :query => events_query
)

nodes_uri = URI::HTTP.build(
  :host  => 'localhost',
  :port  => 8080,
  :path  => '/v3/nodes',
)

nodes_data  = JSON.parse(Net::HTTP.get(nodes_uri))
events_data = JSON.parse(Net::HTTP.get(events_uri))

nodes = nodes_data.map { |element| element['name'] }
nodes.each do |node|
  events = events_data.select { |item| item['subject']['title'] == node }
  if events.empty?
    puts "#{node}: Unchanged"
  else
    msgs = []
    failures = events.first['failures']
    changes  = events.first['successes']
    noops    = events.first['noops']
    skips    = events.first['skips']
    msgs << "Failures: #{failures}" unless failures == 0
    msgs << "Changes: #{changes}"   unless changes  == 0
    msgs << "No-ops: #{noops}"      unless noops    == 0
    msgs << "Skips: #{skips}"       unless skips    == 0
    puts "#{node}: #{msgs.join(', ')}"
  end
end