ugly code

maillog.rb

#!/usr/local/ruby/bin/ruby
require "rubygems"
require "redis"
require "eventmachine"
require "eventmachine-tail"

LOG = "/tmp/foo"
R = Redis.new(:host => "10.1.10.2")

class Reader < EventMachine::FileTail
  def initialize(path, startpos=-1)
    super(path, startpos)
#    puts "Tailing #{path}"
    @buffer = BufferedTokenizer.new
    @stack = { :m => 0 }
  end

  def self.parse(line)
    { :time => line[2], :hostname => line[3], :postfix => line[4][/^([^\/]+)\/smtp.*/,1], :message_id => line[5], :message => line[6..-1] }
  end

  def receive_data(data)
    @buffer.extract(data).each do |line|
      if line.match(/ postfix-10\.1\.5\.[0-9]{1,3}\/smtp\[/)
        newline = Reader.parse(line.split(" "))
#       if newline[:message].match(/ status=sent /)

        if line.match(/ status=sent /)
          @stack.has_key?("#{newline[:postfix]}-sent") ? @stack["#{newline[:postfix]}-sent"] += 1 : @stack["#{newline[:postfix]}-sent"] = 1
        end

        this_m = newline[:time].split(":")[1].to_i
        if this_m > @stack[:m]
          @stack.each do |k,v|
            v += R[k].to_i
            R.set(k, v)
            @stack[k] = 0
          end
          @stack[:m] = this_m
        end
      end
    end
  end
end

EventMachine.run do
  EventMachine::file_tail(LOG, Reader)
end