Joins Rails logs produced on different app servers

join_rails_logs.rb

require 'pp'

by_ip = {}
DATA.each_line do |line|
  request = line.split(' ')

  url = request[1] + ' ' + request[2].gsub('"', '')
  ip = request[4]

  by_ip[ip] ||= []
  by_ip[ip] << url
end

pp by_ip

puts "total #{by_ip.size}"

sum = 0
by_ip.each do |ip, history|

  add = 0
  history.each_cons(2) do |(first, second)|
    if first.end_with?('/checkout/place_order') && second.end_with?('/checkout/confirmation')
      add = 1
    end
  end

  sum += add
end

puts sum

sum = 0
addresses = []
histories = []
by_ip.each do |ip, history|

  add = 0
  history.each_cons(2) do |(first, second)|
    if first.end_with?('/checkout/place_order') && second.end_with?('/checkout')
      add = 1
      addresses << ip

      histories << [ip, history]
    end
  end

  sum += add
end

puts sum
puts addresses

histories.each do |h|
  puts h
  puts
end

__END__
Started GET "/checkout" for 11.222.333.444 at 2014-05-22 06:28:59 -0400
Started POST "/checkout" for 11.222.333.444 at 2014-05-22 06:29:02 -0400