librenms-librenms/includes/polling/cisco-entity-sensors.inc.php

<?php

$query = "SELECT * FROM entPhysical WHERE device_id = '" . $device['device_id'] . "' AND entPhysicalClass = 'sensor'";
$sensors = mysql_query($query);
while($sensor = mysql_fetch_array($sensors)) {

  echo("Checking Entity Sensor " . $sensor['entPhysicalName'] . " - " . $sensor['cempsensorName']);

  $oid = $sensor['entPhysicalIndex']; 

  $sensor_cmd  = $config['snmpget'] . " -m CISCO-ENTITY-SENSOR-MIB -O Uqnv -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'];
  $sensor_cmd .= " entSensorValue.$oid entSensorStatus.$oid";

  $sensor_data = trim(shell_exec($sensor_cmd));

#  echo("$sensor_data");

  list($entSensorValue, $entSensorStatus) = explode("\n", $sensor_data);

  $rrd  = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("ces-" . $oid . ".rrd");

  if (!is_file($rrd)) {
    `rrdtool create $rrd \
     --step 300 \
      DS:value:GAUGE:600:-1000:U \
      RRA:AVERAGE:0.5:1:2304 \
      RRA:AVERAGE:0.5:6:1536 \
      RRA:AVERAGE:0.5:24:2268 \
      RRA:AVERAGE:0.5:288:1890 \
      RRA:MAX:0.5:1:2304 \
      RRA:MAX:0.5:6:1536 \
      RRA:MAX:0.5:24:2268 \
      RRA:MAX:0.5:288:1890 \
      RRA:MIN:0.5:1:2304 \
      RRA:MIN:0.5:6:1536 \
      RRA:MIN:0.5:24:2268 \
      RRA:MIN:0.5:288:1890`;
  }

  $entSensorValue = entPhysical_scale($entSensorValue, $sensor['entSensorScale']);

  $updatecmd = $config['rrdtool'] ." update $rrd N:$entSensorValue";
  shell_exec($updatecmd);

  $update_query = "UPDATE `entPhysical` SET entSensorValue='$entSensorValue', entSensorStatus='$entSensorStatus' WHERE `entPhysical_id` = '".$sensor['entPhysical_id']."'";
  mysql_query($update_query);

  echo($entSensorValue . " - " . $entSensorStatus . "\n");

}

?>