gistfile1.rb

#!/usr/bin/ruby

require 'puppet'
require 'puppet/util/log'
require 'puppet/util/logging'
require 'puppet/transaction/report'

report = Puppet::Transaction::Report.new
Puppet::Util::Log.newdestination report

extend Puppet::Util::Logging

def to_s
    # Some string describing the log source
    "/Node[foo]/File[bar]"
end

info "This is a verbose message"
notice "This is a normal message"
err "This is a failure"

puts report.to_yaml