librenms-librenms/includes/discovery/processors/hrdevice.inc.php

<?php

global $valid_processor;

if ($device['os_group'] == "unix" || $device['os'] == "windows" || $device['os'] == "routeros")
  {
  echo("hrDevice ");
  $hrDevice_oids = array('hrDevice','hrProcessorLoad'); 
  foreach ($hrDevice_oids as $oid) { $hrDevice_array = snmpwalk_cache_oid($device, $oid, $hrDevice_array, "HOST-RESOURCES-MIB:HOST-RESOURCES-TYPES"); }
  foreach($hrDevice_array[$device['device_id']] as $index => $entry)
  {
    if ($entry['hrDeviceType'] == "hrDeviceProcessor") 
    {
      $hrDeviceIndex = $entry['hrDeviceIndex'];

      $usage_oid = ".1.3.6.1.2.1.25.3.3.1.2." . $index;
      $usage = $entry['hrProcessorLoad'];

      #### What is this for? I have forgotten. What has : in its hrDeviceDescr?
      #### Set description to that found in hrDeviceDescr, first part only if containing a :
      $descr_array = explode(":",$entry['hrDeviceDescr']);
      if($descr_array['1']) { $descr = $descr_array['1']; } else { $descr = $descr_array['0']; }

      ### Workaround to set fake description for Mikrotik who don't populate hrDeviceDescr
      if($device['os'] == "routeros" && !isset($entry['hrDeviceDescr'])) { $descr = "Processor";}

      $descr = str_replace("CPU ", "", $descr);
      $descr = str_replace("(TM)", "", $descr);
      $descr = str_replace("(R)", "", $descr);

      $old_rrd  = $config['rrd_dir'] . "/".$device['hostname']."/" . safename("hrProcessor-" . $index . ".rrd");
      $new_rrd  = $config['rrd_dir'] . "/".$device['hostname']."/" . safename("processor-hr-" . $index . ".rrd");

      if($debug) { echo("$old_rrd $new_rrd"); }
      if (is_file($old_rrd)) {
        rename($old_rrd,$new_rrd);
        echo("Moved RRD ");
      }
      if(isset($descr) && $descr != "An electronic chip that makes the computer work.") 
      {
        discover_processor($valid_processor, $device, $usage_oid, $index, "hr", $descr, "1", $usage, NULL, $hrDeviceIndex);
      }
    }
  }
} 
## End hrDevice Processors

?>