Compare DNS output with a list of expected values

dnscheck.rb

#!/usr/bin/env ruby

require 'awesome_print'
require 'pry'
require 'ostruct'
require 'resolv'

begin  #top

  puts "Reading worklist"
  objects = []
  File.readlines('worklist.txt').each { |v|
    a = v.split(' ')
    objects.push OpenStruct.new(
            name: a[0],
            shouldA: a[1]
    )
  }


  puts "Loading DNS results"
  @resolver = Resolv::DNS.new( nameserver: ['4.2.2.1'] )
  objects.each {|v|
    v.digA = @resolver.getresources( v.name, Resolv::DNS::Resource::IN::A )
    unless v.digA == []
      print '.'
    else
      print 'F'
      v.digA.push OpenStruct.new( address: 'DNS ERROR' )
    end
  }
  puts "\n"


  puts "Analyzing results"
  errors = objects.select {|v| v.digA[0].address.to_s != v.shouldA }


  puts "#{errors.count } mismatches found"
  ap errors


  raise 'End of program'

rescue => e
  puts "#{e.class}: #{e}"

  pry
end

$> cat worklist.txt
asd.com 1.2.3.4
asd2.com 1.2.3.5
$>