<?php

$rserver_array = snmpwalk_cache_oid($device, 'cesServerFarmRserverTable', array(), 'CISCO-ENHANCED-SLB-MIB');
$rserver_db    = dbFetchRows('SELECT * FROM `loadbalancer_rservers` WHERE `device_id` = ?', array($device['device_id']));

foreach ($rserver_db as $serverfarm) {
    $serverfarms[$serverfarm['farm_id']] = $serverfarm;
}

foreach ($rserver_array as $index => $serverfarm) {
    $farm_id = preg_replace('@\d+\."(.*?)"\.\d+@', '\\1', $index);

    $oids = array(
             'cesServerFarmRserverTotalConns',
             'cesServerFarmRserverCurrentConns',
             'cesServerFarmRserverFailedConns',
            );

    $db_oids = array(
                $farm_id                     => 'farm_id',
                'cesServerFarmRserverStateDescr' => 'StateDescr',
               );

    if (!is_array($serverfarms[$farm_id])) {
        $rserver_id = dbInsert(array('device_id' => $device['device_id'], 'farm_id' => $farm_id, 'StateDescr' => $serverfarm['cesServerFarmRserverStateDescr']), 'loadbalancer_rservers');
    }
    else {
        foreach ($db_oids as $db_oid => $db_value) {
            $db_update[$db_value] = $serverfarm[$db_oid];
        }

        $updated = dbUpdate($db_update, 'loadbalancer_rservers', '`rserver_id` = ?', $serverfarm['cesServerFarmRserverFailedConns']['farm_id']);
    }

    $rrd_name = array('rserver', $serverfarms[$farm_id]['rserver_id']);

    $rrd_def = array();
    foreach ($oids as $oid) {
        $oid_ds    = truncate(str_replace('cesServerFarm', '', $oid), 19, '');
        $rrd_def[] = "DS:$oid_ds:GAUGE:600:-1:100000000";
    }

    $fields = array();

    foreach ($oids as $oid) {
        if (is_numeric($serverfarm[$oid])) {
            $value = $serverfarm[$oid];
        }
        else {
            $value = '0';
        }
        $fields[$oid] = $value;
    }

    if (isset($serverfarms[$farm_id])) {
        $tags = compact('farm_id', 'rrd_name', 'rrd_def');
        data_update($device,'rservers',$tags,$fields);
    }
}//end foreach

unset($rrd_name, $rrd_def, $oids, $oid, $serverfarm);