modules/orm/helpers/performance_data.php

   1 <?php
   2
   3 defined('SYSPATH') or die('No direct access allowed.');
   4
   5 /**
   6  * Helper methods for performance data processing.
   7  *
   8  * This should only be used in ORM, to do the backend processing. Because this
   9  * can be done both for services and hosts, which is entirely similar, this is
  10  * exported to a helper, so it's available for both.
  11  */
  12 class performance_data {
  13         /**
  14          * Process performance data and return as an array
  15          *
  16          * @param $perf_data_str string
  17          * @return array
  18          */
  19         public static function process_performance_data($perf_data_str) {
  20                 /* Split string in data soruce part and performance part */
  21                 preg_match_all(
  22                         "/(?<=^|[\\s])('(?:\\\\.|[^\\\\'])*'|[^'\\s=][^\\s=]*)=([-0-9.]*|U)([%a-zA-Z]*)(?:;([^; ]*)(?:;([^; ]*)(?:;([-0-9.]*)(?:;([-0-9.]*)|)|)|)|)(?=$|[\\s])/",
  23                         $perf_data_str, $matches, PREG_SET_ORDER);
  24
  25                 $perf_data = array ();
  26
  27                 /* Iterate over data sources */
  28                 foreach ($matches as $ds) {
  29                         $ds_raw = array_shift($ds); /* Full string */
  30                         $ds_name = array_shift($ds);
  31                         $ds_value = array_shift($ds);
  32                         $ds_uom = array_shift($ds);
  33
  34                         /* Parse name, if quoted, strip it down to data source name */
  35                         if (substr($ds_name, 0, 1) == '\'') {
  36                                 $ds_name = stripcslashes(substr($ds_name, 1, -1));
  37                         }
  38
  39                         /* build object */
  40                         $ds_obj = array ();
  41
  42                         if ($ds_value !== '' && $ds_value !== 'U') {
  43                                 $ds_obj['value'] = (float) $ds_value;
  44                         }
  45                         if ($ds_uom !== '') {
  46                                 $ds_obj['unit'] = $ds_uom;
  47                         }
  48                         if (isset($ds[0]) && $ds[0] !== '') {
  49                                 $ds_obj['warn'] = $ds[0];
  50                         }
  51                         if (isset($ds[1]) && $ds[1] !== '') {
  52                                 $ds_obj['crit'] = $ds[1];
  53                         }
  54                         if (isset($ds[2]) && $ds[2] !== '') {
  55                                 $ds_obj['min'] = (float) $ds[2];
  56                         } else if ($ds_uom == '%') {
  57                                 $ds_obj['min'] = 0.0;
  58                         }
  59                         if (isset($ds[3]) && $ds[3] !== '') {
  60                                 $ds_obj['max'] = (float) $ds[3];
  61                         } else if ($ds_uom == '%') {
  62                                 $ds_obj['max'] = 100.0;
  63                         }
  64
  65                         $perf_data[$ds_name] = $ds_obj;
  66                 }
  67                 return $perf_data;
  68         }
  69 }