This script takes a list of names of Puppet report files and extract the names and time stamps of failed resources.

find-puppet-resource-failutes.rb

#!/usr/bin/env ruby

require 'yaml'

ARGV.each do |filename|
  yaml = YAML.load_file(filename)
  hash = yaml.ivars["resource_statuses"]
  # The following line will just print the resource reference
  # puts hash.keys.sort.select{|resource| hash[resource].ivars["failed"]}
  # The following line will also print the resource time stamp, it demonstrates access
  # to other fields about the resource in the report.
  hash.keys.sort.select{|resource| hash[resource].ivars["failed"]}.each do |resource|
    puts "#{hash[resource].ivars["time"]} #{resource}"
  end
end

exit 0