query-comparison.rb

require 'rubygems'
require 'httparty'
require 'json'

class LoggedRequest
  attr_reader :response_time, :path, :status
  
  def initialize(request)
    if request =~ /\"[A-Z]{3,4}\ (.+)\ HTTP/
      @path = $1.gsub('//', '/')
    end
    if request =~ /\" ([2345]\d{2})/
      @status = $1.to_i
    end
    if request =~ /[0-9\.]+\Z/
      @response_time = $~[0].to_f
    end
  end  

end

class Base
  include HTTParty
  base_uri 'localhost:7000'
end

class Other
  include HTTParty
  base_uri 'localhost:8000'
end

path = ARGV.shift
limit = ARGV.shift || 100

fails = []
`tail -#{limit} #{path}`.split("\n").each_with_index do |l,i|
  r = LoggedRequest.new(l)
  puts "#{i} => #{r.path}"

  [
   Thread.new {
      @base_json = Base.get(r.path).body
      @base = JSON.parse(@base_json)
    },
    Thread.new {
      @other_json = Other.get(r.path).body
      @other = JSON.parse(@other_json)
    }
  ].each {|t| t.join }
  
  if @base != @other
    fails << [r.path, @base_json, @other_json]
  end
end

puts "How many fails? #{fails.length}"

fails.each do |f|
  puts f[0]
  puts f[1]
  puts f[2]
end