#!/usr/bin/env ruby

# Monitor your EAccelerator usage.
# Requires: ruby

# Mandatory Parameters

# user / pwd - for basic authentication against control.php
# url - fullpath to control.php

# Author: Dirk Gomez <munin@dirkgomez.de>
# Copyright (C) 2007 Dirk Gomez
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

require 'open-uri'

user  = ENV['user'] || 'user'
pwd   = ENV['password'] || 'password'
url   = ENV['url'] || 'http://127.0.0.1/control.php'

if ARGV[0] == 'config'
  print "EAccelerator Monitoring\n"
  print "graph_title PHP Eaccelerator\n"
  print "graph_category webserver\n"
  print "Memoryusagepercentage.label Memory Usage %\n"
  print "Memoryusagepercentage.warning 95\n"
  print "Memoryusagepercentage.critical 95\n"
  print "Memoryusage.label Memory Usage MB\n"
  print "Memorymax.label Cache Size MB\n"
  print "Freememory.label Free Memory MB\n"
  print "Cachedscripts.label Cached Scripts\n"
  print "Removedscripts.label Removed Scripts\n"
  print "Cachedkeys.label Cached Keys\n"
  exit
end

one_liners = 0
three_liners = 0
key = ''

open(url, http_basic_authentication: [user, pwd]) do |f|
  f.each do |line|
    if three_liners > 0
      three_liners += 1

      print 'Memoryusagepercentage.value ' if three_liners == 2

      print 'Memoryusage.value ' if three_liners == 3

      print 'Memorymax.value ' if three_liners == 4

      print line.gsub!(/[^0-9.]/s, '')
      print "\n"
    end

    if one_liners > 0
      one_liners += 1
      print "#{key}.value "
      print line.gsub!(/[^0-9.]/s, '')
      print "\n"
    end

    if one_liners > 1
      line = ''
      one_liners = 0
    end

    if three_liners > 3
      line = ''
      three_liners = 0
    end

    if line =~ /Memory usage/
      key = line.gsub!(/(<[^>]*>)|\n|\t| /s, '')
      three_liners += 1
    end

    if line =~ /<td class="e">Free memory/ || line =~ /<td class="e">Cached scripts/ || line =~ /<td class="e">Removed scripts/ || line =~ /<td class="e">Cached keys/
      key = line.gsub!(/(<[^>]*>)|\n|\t| /s, '')
      one_liners += 1
    end
  end
end