<?php
/**
 * Timos.php
 *
 * -Description-
 *
 * 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 3 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, see <https://www.gnu.org/licenses/>.
 *
 * @link       https://www.librenms.org
 *
 * @copyright  2019 Vitali Kari
 * @copyright  2019 Tony Murray
 * @author     Vitali Kari <vitali.kari@gmail.com>
 * @author     Tony Murray <murraytony@gmail.com>
 */

namespace LibreNMS\OS;

use App\Models\Device;
use App\Models\EntPhysical;
use App\Models\MplsLsp;
use App\Models\MplsLspPath;
use App\Models\MplsSap;
use App\Models\MplsSdp;
use App\Models\MplsSdpBind;
use App\Models\MplsService;
use App\Models\MplsTunnelArHop;
use App\Models\MplsTunnelCHop;
use Illuminate\Support\Collection;
use LibreNMS\Device\WirelessSensor;
use LibreNMS\Interfaces\Discovery\MplsDiscovery;
use LibreNMS\Interfaces\Discovery\Sensors\WirelessChannelDiscovery;
use LibreNMS\Interfaces\Discovery\Sensors\WirelessPowerDiscovery;
use LibreNMS\Interfaces\Discovery\Sensors\WirelessRsrpDiscovery;
use LibreNMS\Interfaces\Discovery\Sensors\WirelessRsrqDiscovery;
use LibreNMS\Interfaces\Discovery\Sensors\WirelessRssiDiscovery;
use LibreNMS\Interfaces\Discovery\Sensors\WirelessSnrDiscovery;
use LibreNMS\Interfaces\Polling\MplsPolling;
use LibreNMS\OS;
use LibreNMS\RRD\RrdDefinition;

class Timos extends OS implements MplsDiscovery, MplsPolling, WirelessPowerDiscovery, WirelessSnrDiscovery, WirelessRsrqDiscovery, WirelessRssiDiscovery, WirelessRsrpDiscovery, WirelessChannelDiscovery
{
    public function discoverOS(Device $device): void
    {
        parent::discoverOS($device); // yaml

        $hardware_index = snmp_get($this->getDeviceArray(), 'tmnxChassisType.1', '-Ovq', 'TIMETRA-CHASSIS-MIB');
        $device->hardware = snmp_get($this->getDeviceArray(), "tmnxChassisTypeName.$hardware_index", '-Ovq', 'TIMETRA-CHASSIS-MIB');

        $hw = snmpwalk_group($this->getDeviceArray(), 'tmnxHwClass', 'TIMETRA-CHASSIS-MIB');
        foreach ($hw[1]['tmnxHwClass'] ?? [] as $unitID => $class) {
            if ($class == 3) {
                $device->serial = snmp_get($this->getDeviceArray(), "1.3.6.1.4.1.6527.3.1.2.2.1.8.1.5.1.$unitID", '-OQv', 'TIMETRA-CHASSIS-MIB');

                return;
            }
        }
    }

    /**
     * Discover wireless Rx & Tx (Signal Strength). This is in dBm. Type is power.
     * Returns an array of LibreNMS\Device\Sensor objects that have been discovered
     * ALU-MICROWAVE-MIB::aluMwRadioLocalRxMainPower
     * ALU-MICROWAVE-MIB::aluMwRadioLocalTxPower
     *
     * @return array
     */
    public function discoverWirelesspower()
    {
        $name = $this->getCacheByIndex('aluMwRadioName', 'ALU-MICROWAVE-MIB');
        $rsl = snmpwalk_cache_oid($this->getDeviceArray(), 'aluMwRadioLocalRxMainPower', [], 'ALU-MICROWAVE-MIB');
        $tx = snmpwalk_cache_oid($this->getDeviceArray(), 'aluMwRadioLocalTxPower', [], 'ALU-MICROWAVE-MIB');

        $sensors = [];
        $divisor = 10;

        foreach ($rsl as $index => $data) {
            $sensors[] = new WirelessSensor(
                'power',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.6.1.2.2.7.1.3.1.2.' . $index,
                'Nokia-Packet-MW-Rx',
                $index,
                "Rx ({$name[$index]})",
                $data['aluMwRadioLocalRxMainPower'] / $divisor,
                1,
                $divisor
            );
        }

        foreach ($tx as $index => $data) {
            $sensors[] = new WirelessSensor(
                'power',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.6.1.2.2.7.1.3.1.1.' . $index,
                'Nokia-Packet-MW-Tx',
                $index,
                "Tx ({$name[$index]})",
                $data['aluMwRadioLocalTxPower'] / $divisor,
                1,
                $divisor
            );
        }

        return $sensors;
    }

    /**
     * @param  mixed  $tmnxEncapVal
     * @return string encapsulation
     *
     * @see TIMETRA-TC-MIB::TmnxEncapVal
     */
    private function nokiaEncap($tmnxEncapVal)
    {
        // implement other encapsulation values
        $map = sprintf('%032b', $tmnxEncapVal);

        if (substr($map, -32, 20) == '00000000000000000000') { // 12-bit IEEE 802.1Q VLAN ID
            if ($tmnxEncapVal == 4095) {
                return '*';
            }
        }

        return $tmnxEncapVal;
    }

    /**
     * @return Collection MplsLsp objects
     */
    public function discoverMplsLsps()
    {
        $mplsLspCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspTable', [], 'TIMETRA-MPLS-MIB', 'nokia');
        if (! empty($mplsLspCache)) {
            $mplsLspCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspLastChange', $mplsLspCache, 'TIMETRA-MPLS-MIB', 'nokia', '-OQUst');
        }

        $lsps = new Collection();
        foreach ($mplsLspCache as $key => $value) {
            [$vrf_oid, $lsp_oid] = explode('.', $key);

            $mplsLspFromAddr = $value['vRtrMplsLspFromAddr'] ?? null;
            if (isset($value['vRtrMplsLspNgFromAddr'])) {
                $mplsLspFromAddr = long2ip(hexdec(str_replace(' ', '', $value['vRtrMplsLspNgFromAddr'])));
            }
            $mplsLspToAddr = $value['vRtrMplsLspToAddr'] ?? null;
            if (isset($value['vRtrMplsLspNgToAddr'])) {
                $mplsLspToAddr = long2ip(hexdec(str_replace(' ', '', $value['vRtrMplsLspNgToAddr'])));
            }

            $lsps->push(new MplsLsp([
                'vrf_oid' => $vrf_oid,
                'lsp_oid' => $lsp_oid,
                'device_id' => $this->getDeviceId(),
                'mplsLspRowStatus' => $value['vRtrMplsLspRowStatus'] ?? null,
                'mplsLspLastChange' => round(($value['vRtrMplsLspLastChange'] ?? 0) / 100),
                'mplsLspName' => $value['vRtrMplsLspName'] ?? null,
                'mplsLspAdminState' => $value['vRtrMplsLspAdminState'] ?? null,
                'mplsLspOperState' => $value['vRtrMplsLspOperState'] ?? null,
                'mplsLspFromAddr' => $mplsLspFromAddr ?? null,
                'mplsLspToAddr' => $mplsLspToAddr ?? null,
                'mplsLspType' => $value['vRtrMplsLspType'] ?? null,
                'mplsLspFastReroute' => $value['vRtrMplsLspFastReroute'] ?? null,
            ]));
        }

        return $lsps;
    }

    /**
     * @param  Collection  $lsps  collecton of synchronized lsp objects from discoverMplsLsps()
     * @return Collection MplsLspPath objects
     */
    public function discoverMplsPaths($lsps)
    {
        $mplsPathCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspPathTable', [], 'TIMETRA-MPLS-MIB', 'nokia');
        if (! empty($mplsPathCache)) {
            $mplsPathCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspPathLastChange', $mplsPathCache, 'TIMETRA-MPLS-MIB', 'nokia', '-OQUst');
        }

        $paths = new Collection();
        foreach ($mplsPathCache as $key => $value) {
            [$vrf_oid, $lsp_oid, $path_oid] = explode('.', $key);
            $lsp_id = $lsps->where('lsp_oid', $lsp_oid)->firstWhere('vrf_oid', $vrf_oid)->lsp_id;
            $paths->push(new MplsLspPath([
                'lsp_id' => $lsp_id,
                'path_oid' => $path_oid,
                'device_id' => $this->getDeviceId(),
                'mplsLspPathRowStatus' => $value['vRtrMplsLspPathRowStatus'] ?? null,
                'mplsLspPathLastChange' => round(($value['vRtrMplsLspPathLastChange'] ?? 0) / 100),
                'mplsLspPathType' => $value['vRtrMplsLspPathType'] ?? null,
                'mplsLspPathBandwidth' => $value['vRtrMplsLspPathBandwidth'] ?? null,
                'mplsLspPathOperBandwidth' => $value['vRtrMplsLspPathOperBandwidth'] ?? null,
                'mplsLspPathAdminState' => $value['vRtrMplsLspPathAdminState'] ?? null,
                'mplsLspPathOperState' => $value['vRtrMplsLspPathOperState'] ?? null,
                'mplsLspPathState' => $value['vRtrMplsLspPathState'] ?? null,
                'mplsLspPathFailCode' => $value['vRtrMplsLspPathFailCode'] ?? null,
                'mplsLspPathFailNodeAddr' => $value['vRtrMplsLspPathFailNodeAddr'] ?? null,
                'mplsLspPathMetric' => $value['vRtrMplsLspPathMetric'] ?? null,
                'mplsLspPathOperMetric' => $value['vRtrMplsLspPathOperMetric'] ?? null,
                'mplsLspPathTunnelARHopListIndex' => $value['vRtrMplsLspPathTunnelARHopListIndex'] ?? null,
                'mplsLspPathTunnelCHopListIndex' => $value['vRtrMplsLspPathTunnelCRHopListIndex'] ?? null,
            ]));
        }

        return $paths;
    }

    /**
     * @return Collection MplsSdp objects
     */
    public function discoverMplsSdps()
    {
        $mplsSdpCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sdpInfoTable', [], 'TIMETRA-SDP-MIB', 'nokia', '-OQUst');

        $sdps = new Collection();
        foreach ($mplsSdpCache as $value) {
            if ((! empty($value['sdpFarEndInetAddress'])) && ($value['sdpFarEndInetAddressType'] == 'ipv4')) {
                $ip = long2ip(hexdec(str_replace(' ', '', $value['sdpFarEndInetAddress'])));
            } else {
                //Fixme implement ipv6 conversion
                $ip = $value['sdpFarEndInetAddress'] ?? null;
            }
            $sdps->push(new MplsSdp([
                'sdp_oid' => $value['sdpId'],
                'device_id' => $this->getDeviceId(),
                'sdpRowStatus' => $value['sdpRowStatus'] ?? null,
                'sdpDelivery' => $value['sdpDelivery'] ?? null,
                'sdpDescription' => $value['sdpDescription'] ?? null,
                'sdpAdminStatus' => $value['sdpAdminStatus'] ?? null,
                'sdpOperStatus' => $value['sdpOperStatus'] ?? null,
                'sdpAdminPathMtu' => $value['sdpAdminPathMtu'] ?? null,
                'sdpOperPathMtu' => $value['sdpOperPathMtu'] ?? null,
                'sdpLastMgmtChange' => round(($value['sdpLastMgmtChange'] ?? 0) / 100),
                'sdpLastStatusChange' => round(($value['sdpLastStatusChange'] ?? 0) / 100),
                'sdpActiveLspType' => $value['sdpActiveLspType'] ?? null,
                'sdpFarEndInetAddressType' => $value['sdpFarEndInetAddressType'] ?? null,
                'sdpFarEndInetAddress' => $ip,
            ]));
        }

        return $sdps;
    }

    /**
     * @return Collection MplsService objects
     */
    public function discoverMplsServices()
    {
        $mplsSvcCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'svcBaseInfoTable', [], 'TIMETRA-SERV-MIB', 'nokia', '-OQUst');
        $mplsSvcCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'svcTlsInfoTable', $mplsSvcCache, 'TIMETRA-SERV-MIB', 'nokia', '-OQUst');

        $svcs = new Collection();

        // Workaround, remove some defalt entries we do not want to see
        $filter = '/^\w* Service for internal purposes only/';

        foreach ($mplsSvcCache as $key => $value) {
            $garbage = preg_match($filter, $value['svcDescription']);
            if ($garbage) {
                unset($key);
                continue;
            }

            $svcs->push(new MplsService([
                'svc_oid' => $value['svcId'],
                'device_id' => $this->getDeviceId(),
                'svcRowStatus' => $value['svcRowStatus'] ?? null,
                'svcType' => $value['svcType'] ?? null,
                'svcCustId' => $value['svcCustId'] ?? null,
                'svcAdminStatus' => $value['svcAdminStatus'] ?? null,
                'svcOperStatus' => $value['svcOperStatus'] ?? null,
                'svcDescription' => $value['svcDescription'] ?? null,
                'svcMtu' => $value['svcMtu'] ?? null,
                'svcNumSaps' => $value['svcNumSaps'] ?? null,
                'svcNumSdps' => $value['svcNumSdps'] ?? null,
                'svcLastMgmtChange' => round(($value['svcLastMgmtChange'] ?? 0) / 100),
                'svcLastStatusChange' => round(($value['svcLastStatusChange'] ?? 0) / 100),
                'svcVRouterId' => $value['svcVRouterId'] ?? null,
                'svcTlsMacLearning' => $value['svcTlsMacLearning'] ?? null,
                'svcTlsStpAdminStatus' => $value['svcTlsStpAdminStatus'] ?? null,
                'svcTlsStpOperStatus' => $value['svcTlsStpOperStatus'] ?? null,
                'svcTlsFdbTableSize' => $value['svcTlsFdbTableSize'] ?? null,
                'svcTlsFdbNumEntries' => $value['svcTlsFdbNumEntries'] ?? null,
            ]));
        }

        return $svcs;
    }

    /**
     * @return Collection MplsSap objects
     */
    public function discoverMplsSaps($svcs)
    {
        $mplsSapCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sapBaseInfoTable', [], 'TIMETRA-SAP-MIB', 'nokia', '-OQUst');
        $mplsSapTrafficCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sapBaseStatsTable', [], 'TIMETRA-SAP-MIB', 'nokia', '-OQUst');

        $saps = new Collection();

        // Workaround, there are some oids not covered by actual MIB, try to filter them
        // i.e. sapBaseInfoEntry.300.118208001.1342177283.10
        $filter_key = '/300\.[0-9]+\.[0-9]+\.[0-9]+/';
        // remove some default entries we do not want to see
        $filter_value = '/^Internal SAP/';

        foreach ($mplsSapCache as $key => $value) {
            if (preg_match($filter_key, $key) || preg_match($filter_value, $value['sapDescription'])) {
                unset($key);
                continue;
            }
            [$svcId, $sapPortId, $sapEncapValue] = explode('.', $key);
            $svc_id = $svcs->firstWhere('svc_oid', $svcId)->svc_id;
            $traffic_id = $svcId . '.' . $sapPortId . '.' . $this->nokiaEncap($sapEncapValue);

            $saps->push(new MplsSap([
                'svc_id' => $svc_id,
                'svc_oid' => $svcId,
                'sapPortId' => $sapPortId,
                'device_id' => $this->getDeviceId(),
                'sapEncapValue' => $this->nokiaEncap($sapEncapValue),
                'sapRowStatus' => $value['sapRowStatus'],
                'sapType' => $value['sapType'],
                'sapDescription' => $value['sapDescription'],
                'sapAdminStatus' => $value['sapAdminStatus'],
                'sapOperStatus' => $value['sapOperStatus'],
                'sapLastMgmtChange' => round(($value['sapLastMgmtChange'] ?? 0) / 100),
                'sapLastStatusChange' => round(($value['sapLastStatusChange'] ?? 0) / 100),
                'sapIngressBytes' => ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressPchipOfferedLoPrioOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressPchipOfferedHiPrioOctets'] ?? 0),
                'sapEgressBytes' => ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipForwardedOutProfOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipForwardedInProfOctets'] ?? 0),
                'sapIngressDroppedBytes' => ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressQchipDroppedLoPrioOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressQchipDroppedHiPrioOctets'] ?? 0),
                'sapEgressDroppedBytes' => ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipDroppedOutProfOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipDroppedInProfOctets'] ?? 0),
            ]));
        }

        return $saps;
    }

    /**
     * @return Collection MplsSdpBind objects
     */
    public function discoverMplsSdpBinds($sdps, $svcs)
    {
        $mplsBindCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sdpBindTable', [], 'TIMETRA-SDP-MIB', 'nokia', '-OQUsbt');
        $mplsBindCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sdpBindBaseStatsTable', $mplsBindCache, 'TIMETRA-SDP-MIB', 'nokia', '-OQUsb');

        $binds = new Collection();
        foreach ($mplsBindCache as $key => $value) {
            [$svcId] = explode('.', $key);
            $bind_id = str_replace(' ', '', $value['sdpBindId'] ?? '');
            $sdp_oid = hexdec(substr($bind_id, 0, 8));
            $svc_oid = hexdec(substr($bind_id, 9, 16));
            $sdp_id = $sdps->firstWhere('sdp_oid', $sdp_oid)->sdp_id;
            $svc_id = $svcs->firstWhere('svc_oid', $svcId)->svc_id;
            if (isset($sdp_id, $svc_id, $sdp_oid, $svc_oid)) {
                $binds->push(new MplsSdpBind([
                    'sdp_id' => $sdp_id,
                    'svc_id' => $svc_id,
                    'sdp_oid' => $sdp_oid,
                    'svc_oid' => $svc_oid,
                    'device_id' => $this->getDeviceId(),
                    'sdpBindRowStatus' => $value['sdpBindRowStatus'] ?? null,
                    'sdpBindAdminStatus' => $value['sdpBindAdminStatus'] ?? null,
                    'sdpBindOperStatus' => $value['sdpBindOperStatus'] ?? null,
                    'sdpBindLastMgmtChange' => round(($value['sdpBindLastMgmtChange'] ?? 0) / 100),
                    'sdpBindLastStatusChange' => round(($value['sdpBindLastStatusChange'] ?? 0) / 100),
                    'sdpBindType' => $value['sdpBindType'],
                    'sdpBindVcType' => $value['sdpBindVcType'],
                    'sdpBindBaseStatsIngFwdPackets' => $value['sdpBindBaseStatsIngressForwardedPackets'] ?? null,
                    'sdpBindBaseStatsIngFwdOctets' => $value['sdpBindBaseStatsIngFwdOctets'] ?? null,
                    'sdpBindBaseStatsEgrFwdPackets' => $value['sdpBindBaseStatsEgressForwardedPackets'] ?? null,
                    'sdpBindBaseStatsEgrFwdOctets' => $value['sdpBindBaseStatsEgressForwardedOctets'] ?? null,
                ]));
            }
        }

        return $binds;
    }

    /**
     * @return Collection MplsTunnelArHop objects
     */
    public function discoverMplsTunnelArHops($paths)
    {
        $mplsTunnelArHopCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'mplsTunnelARHopTable', [], 'MPLS-TE-MIB', 'nokia', '-OQUsbt');
        $mplsTunnelArHopCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsTunnelARHopTable', $mplsTunnelArHopCache, 'TIMETRA-MPLS-MIB', 'nokia', '-OQUsb');

        // vRtrMplsTunnelARHopProtection Bits
        $localAvailable = 0b10000000;
        $localInUse = 0b01000000;
        $bandwidthProtected = 0b00100000;
        $nodeProtected = 0b00010000;
        $preemptionPending = 0b00001000;
        $nodeId = 0b00000100;

        $arhops = new Collection();
        foreach ($mplsTunnelArHopCache as $key => $value) {
            [$mplsTunnelARHopListIndex, $mplsTunnelARHopIndex] = explode('.', $key);
            $lsp_path_id = $paths->firstWhere('mplsLspPathTunnelARHopListIndex', $mplsTunnelARHopListIndex)->lsp_path_id;
            $protection = intval($value['vRtrMplsTunnelARHopProtection'], 16);

            $localLinkProtection = ($protection & $localAvailable) ? 'true' : 'false';
            $linkProtectionInUse = ($protection & $localInUse) ? 'true' : 'false';
            $bandwidthProtection = ($protection & $bandwidthProtected) ? 'true' : 'false';
            $nextNodeProtection = ($protection & $nodeProtected) ? 'true' : 'false';

            $ARHopRouterId = $value['vRtrMplsTunnelARHopRouterId'];
            if (isset($value['vRtrMplsTunnelARHopNgRouterId'])) {
                $ARHopRouterId = long2ip(hexdec(str_replace(' ', '', $value['vRtrMplsTunnelARHopNgRouterId'])));
            }

            if (isset($mplsTunnelARHopListIndex, $mplsTunnelARHopIndex, $lsp_path_id)) {
                $arhops->push(new MplsTunnelArHop([
                    'mplsTunnelARHopListIndex' => $mplsTunnelARHopListIndex,
                    'mplsTunnelARHopIndex' => $mplsTunnelARHopIndex,
                    'lsp_path_id' => $lsp_path_id,
                    'device_id' => $this->getDeviceId(),
                    'mplsTunnelARHopAddrType' => $value['mplsTunnelARHopAddrType'] ?? null,
                    'mplsTunnelARHopIpv4Addr' => $value['mplsTunnelARHopIpv4Addr'] ?? null,
                    'mplsTunnelARHopIpv6Addr' => $value['mplsTunnelARHopIpv6Addr'] ?? null,
                    'mplsTunnelARHopAsNumber' => $value['mplsTunnelARHopAsNumber'] ?? null,
                    'mplsTunnelARHopStrictOrLoose' => $value['mplsTunnelARHopStrictOrLoose'] ?? null,
                    'mplsTunnelARHopRouterId' => $ARHopRouterId,
                    'localProtected' => $localLinkProtection,
                    'linkProtectionInUse' => $linkProtectionInUse,
                    'bandwidthProtected' => $bandwidthProtection,
                    'nextNodeProtected' => $nextNodeProtection,
                ]));
            }
        }

        return $arhops;
    }

    /**
     * @return Collection MplsTunnelCHop objects
     */
    public function discoverMplsTunnelCHops($paths)
    {
        $mplsTunnelCHopCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsTunnelCHopTable', [], 'TIMETRA-MPLS-MIB', 'nokia', '-OQUsb');

        $lsp_ids = $paths->pluck('lsp_path_id', 'mplsLspPathTunnelCHopListIndex');
        $chops = new Collection();
        foreach ($mplsTunnelCHopCache as $key => $value) {
            [$mplsTunnelCHopListIndex, $mplsTunnelCHopIndex] = explode('.', $key);
            $lsp_path_id = $lsp_ids->get($mplsTunnelCHopListIndex);

            $chops->push(new MplsTunnelCHop([
                'mplsTunnelCHopListIndex' => $mplsTunnelCHopListIndex,
                'mplsTunnelCHopIndex' => $mplsTunnelCHopIndex,
                'lsp_path_id' => $lsp_path_id,
                'device_id' => $this->getDeviceId(),
                'mplsTunnelCHopAddrType' => $value['vRtrMplsTunnelCHopAddrType'],
                'mplsTunnelCHopIpv4Addr' => $value['vRtrMplsTunnelCHopIpv4Addr'],
                'mplsTunnelCHopIpv6Addr' => $value['vRtrMplsTunnelCHopIpv6Addr'],
                'mplsTunnelCHopAsNumber' => $value['vRtrMplsTunnelCHopAsNumber'],
                'mplsTunnelCHopStrictOrLoose' => $value['vRtrMplsTunnelCHopStrictOrLoose'],
                'mplsTunnelCHopRouterId' => $value['vRtrMplsTunnelCHopRtrID'],
            ]));
        }

        return $chops;
    }

    /**
     * @return Collection MplsLsp objects
     */
    public function pollMplsLsps()
    {
        $mplsLspCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspTable', [], 'TIMETRA-MPLS-MIB', 'nokia');
        if (! empty($mplsLspCache)) {
            $mplsLspCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspLastChange', $mplsLspCache, 'TIMETRA-MPLS-MIB', 'nokia', '-OQUst');
            $mplsLspCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspStatTable', $mplsLspCache, 'TIMETRA-MPLS-MIB', 'nokia');
        }

        $lsps = new Collection();
        foreach ($mplsLspCache as $key => $value) {
            [$vrf_oid, $lsp_oid] = explode('.', $key);

            $mplsLspFromAddr = $value['vRtrMplsLspFromAddr'] ?? null;
            if (isset($value['vRtrMplsLspNgFromAddr'])) {
                $mplsLspFromAddr = long2ip(hexdec(str_replace(' ', '', $value['vRtrMplsLspNgFromAddr'])));
            }
            $mplsLspToAddr = $value['vRtrMplsLspToAddr'] ?? null;
            if (isset($value['vRtrMplsLspNgToAddr'])) {
                $mplsLspToAddr = long2ip(hexdec(str_replace(' ', '', $value['vRtrMplsLspNgToAddr'])));
            }

            $lsps->push(new MplsLsp([
                'vrf_oid' => $vrf_oid,
                'lsp_oid' => $lsp_oid,
                'device_id' => $this->getDeviceId(),
                'mplsLspRowStatus' => $value['vRtrMplsLspRowStatus'] ?? null,
                'mplsLspLastChange' => round(($value['vRtrMplsLspLastChange'] ?? 0) / 100),
                'mplsLspName' => $value['vRtrMplsLspName'] ?? null,
                'mplsLspAdminState' => $value['vRtrMplsLspAdminState'] ?? null,
                'mplsLspOperState' => $value['vRtrMplsLspOperState'] ?? null,
                'mplsLspFromAddr' => $mplsLspFromAddr,
                'mplsLspToAddr' => $mplsLspToAddr,
                'mplsLspType' => $value['vRtrMplsLspType'] ?? null,
                'mplsLspFastReroute' => $value['vRtrMplsLspFastReroute'] ?? null,
                'mplsLspAge' => abs($value['vRtrMplsLspAge'] ?? 0),
                'mplsLspTimeUp' => abs($value['vRtrMplsLspTimeUp'] ?? 0),
                'mplsLspTimeDown' => abs($value['vRtrMplsLspTimeDown'] ?? 0),
                'mplsLspPrimaryTimeUp' => abs($value['vRtrMplsLspPrimaryTimeUp'] ?? 0),
                'mplsLspTransitions' => $value['vRtrMplsLspTransitions'] ?? null,
                'mplsLspLastTransition' => abs(round(($value['vRtrMplsLspLastTransition'] ?? 0) / 100)),
                'mplsLspConfiguredPaths' => $value['vRtrMplsLspConfiguredPaths'] ?? null,
                'mplsLspStandbyPaths' => $value['vRtrMplsLspStandbyPaths'] ?? null,
                'mplsLspOperationalPaths' => $value['vRtrMplsLspOperationalPaths'] ?? null,
            ]));
        }

        return $lsps;
    }

    /**
     * @param  Collection  $lsps  collecton of synchronized lsp objects from pollMplsLsps()
     * @return Collection MplsLspPath objects
     */
    public function pollMplsPaths($lsps)
    {
        $mplsPathCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspPathTable', [], 'TIMETRA-MPLS-MIB', 'nokia');
        if (! empty($mplsPathCache)) {
            $mplsPathCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspPathLastChange', $mplsPathCache, 'TIMETRA-MPLS-MIB', 'nokia', '-OQUst');
            $mplsPathCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsLspPathStatTable', $mplsPathCache, 'TIMETRA-MPLS-MIB', 'nokia');
        }

        $paths = new Collection();
        foreach ($mplsPathCache as $key => $value) {
            [$vrf_oid, $lsp_oid, $path_oid] = explode('.', $key);
            $lsp_id = $lsps->where('lsp_oid', $lsp_oid)->firstWhere('vrf_oid', $vrf_oid)->lsp_id;
            $paths->push(new MplsLspPath([
                'lsp_id' => $lsp_id,
                'path_oid' => $path_oid,
                'device_id' => $this->getDeviceId(),
                'mplsLspPathRowStatus' => $value['vRtrMplsLspPathRowStatus'] ?? null,
                'mplsLspPathLastChange' => round(($value['vRtrMplsLspPathLastChange'] ?? 0) / 100),
                'mplsLspPathType' => $value['vRtrMplsLspPathType'] ?? null,
                'mplsLspPathBandwidth' => $value['vRtrMplsLspPathBandwidth'] ?? null,
                'mplsLspPathOperBandwidth' => $value['vRtrMplsLspPathOperBandwidth'] ?? null,
                'mplsLspPathAdminState' => $value['vRtrMplsLspPathAdminState'] ?? null,
                'mplsLspPathOperState' => $value['vRtrMplsLspPathOperState'] ?? null,
                'mplsLspPathState' => $value['vRtrMplsLspPathState'] ?? null,
                'mplsLspPathFailCode' => $value['vRtrMplsLspPathFailCode'] ?? null,
                'mplsLspPathFailNodeAddr' => $value['vRtrMplsLspPathFailNodeAddr'] ?? null,
                'mplsLspPathMetric' => $value['vRtrMplsLspPathMetric'] ?? null,
                'mplsLspPathOperMetric' => $value['vRtrMplsLspPathOperMetric'] ?? null,
                'mplsLspPathTimeUp' => abs($value['vRtrMplsLspPathTimeUp'] ?? 0),
                'mplsLspPathTimeDown' => abs($value['vRtrMplsLspPathTimeDown'] ?? 0),
                'mplsLspPathTransitionCount' => $value['vRtrMplsLspPathTransitionCount'] ?? null,
                'mplsLspPathTunnelARHopListIndex' => $value['vRtrMplsLspPathTunnelARHopListIndex'] ?? null,
                'mplsLspPathTunnelCHopListIndex' => $value['vRtrMplsLspPathTunnelCRHopListIndex'] ?? null,
            ]));
        }

        return $paths;
    }

    /**
     * @return Collection MplsSdp objects
     */
    public function pollMplsSdps()
    {
        $mplsSdpCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sdpInfoTable', [], 'TIMETRA-SDP-MIB', 'nokia', '-OQUst');

        $sdps = new Collection();
        foreach ($mplsSdpCache as $value) {
            if ((! empty($value['sdpFarEndInetAddress'])) && ($value['sdpFarEndInetAddressType'] == 'ipv4')) {
                $ip = long2ip(hexdec(str_replace(' ', '', $value['sdpFarEndInetAddress'])));
            } else {
                //Fixme implement ipv6 conversion
                //$value['sdpFarEndInetAddress'] might still be any of these:
                //  -> unknown(0), ipv4(1), ipv6(2), ipv4z(3), ipv6z(4), dns(16)

                $ip = $value['sdpFarEndInetAddress'] ?? null;
            }
            $sdps->push(new MplsSdp([
                'sdp_oid' => $value['sdpId'],
                'device_id' => $this->getDeviceId(),
                'sdpRowStatus' => $value['sdpRowStatus'],
                'sdpDelivery' => $value['sdpDelivery'],
                'sdpDescription' => $value['sdpDescription'],
                'sdpAdminStatus' => $value['sdpAdminStatus'],
                'sdpOperStatus' => $value['sdpOperStatus'],
                'sdpAdminPathMtu' => $value['sdpAdminPathMtu'],
                'sdpOperPathMtu' => $value['sdpOperPathMtu'],
                'sdpLastMgmtChange' => round($value['sdpLastMgmtChange'] / 100),
                'sdpLastStatusChange' => round($value['sdpLastStatusChange'] / 100),
                'sdpActiveLspType' => $value['sdpActiveLspType'] ?? null,
                'sdpFarEndInetAddressType' => $value['sdpFarEndInetAddressType'] ?? null,
                'sdpFarEndInetAddress' => $ip,
            ]));
        }

        return $sdps;
    }

    /**
     * @return Collection MplsService objects
     */
    public function pollMplsServices()
    {
        $mplsSvcCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'svcBaseInfoTable', [], 'TIMETRA-SERV-MIB', 'nokia', '-OQUst');
        $mplsSvcCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'svcTlsInfoTable', $mplsSvcCache, 'TIMETRA-SERV-MIB', 'nokia', '-OQUst');

        $svcs = new Collection();

        // Workaround, remove some default entries we do not want to see
        $filter = '/^\w* Service for internal purposes only/';

        foreach ($mplsSvcCache as $key => $value) {
            $garbage = preg_match($filter, $value['svcDescription']);
            if ($garbage) {
                unset($key);
                continue;
            }
            $svcs->push(new MplsService([
                'svc_oid' => $value['svcId'],
                'device_id' => $this->getDeviceId(),
                'svcRowStatus' => $value['svcRowStatus'] ?? null,
                'svcType' => $value['svcType'] ?? null,
                'svcCustId' => $value['svcCustId'] ?? null,
                'svcAdminStatus' => $value['svcAdminStatus'] ?? null,
                'svcOperStatus' => $value['svcOperStatus'] ?? null,
                'svcDescription' => $value['svcDescription'] ?? null,
                'svcMtu' => $value['svcMtu'] ?? null,
                'svcNumSaps' => $value['svcNumSaps'] ?? null,
                'svcNumSdps' => $value['svcNumSdps'] ?? null,
                'svcLastMgmtChange' => round(($value['svcLastMgmtChange'] ?? 0) / 100),
                'svcLastStatusChange' => round(($value['svcLastStatusChange'] ?? 0) / 100),
                'svcVRouterId' => $value['svcVRouterId'] ?? null,
                'svcTlsMacLearning' => $value['svcTlsMacLearning'] ?? null,
                'svcTlsStpAdminStatus' => $value['svcTlsStpAdminStatus'] ?? null,
                'svcTlsStpOperStatus' => $value['svcTlsStpOperStatus'] ?? null,
                'svcTlsFdbTableSize' => $value['svcTlsFdbTableSize'] ?? null,
                'svcTlsFdbNumEntries' => $value['svcTlsFdbNumEntries'] ?? null,
            ]));
        }

        return $svcs;
    }

    /**
     * @return Collection MplsSap objects
     */
    public function pollMplsSaps($svcs)
    {
        $mplsSapCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sapBaseInfoTable', [], 'TIMETRA-SAP-MIB', 'nokia', '-OQUst');
        $mplsSapTrafficCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sapBaseStatsTable', [], 'TIMETRA-SAP-MIB', 'nokia', '-OQUst');

        $saps = new Collection();

        // Workaround, there are some oids not covered by actual MIB, try to filter them
        // i.e. sapBaseInfoEntry.300.118208001.1342177283.10
        $filter_key = '/300\.[0-9]+\.[0-9]+\.[0-9]+/';
        // remove some default entries we do not want to see
        $filter_value = '/^Internal SAP/';

        // cache a ifIndex -> ifName
        $ifIndexNames = $this->getDevice()->ports()->pluck('ifName', 'ifIndex');

        foreach ($mplsSapCache as $key => $value) {
            if (preg_match($filter_key, $key) || preg_match($filter_value, $value['sapDescription'])) {
                unset($key);
                continue;
            }
            [$svcId, $sapPortId, $sapEncapValue] = explode('.', $key);
            $svc_id = $svcs->firstWhere('svc_oid', $svcId)->svc_id;
            $traffic_id = $svcId . '.' . $sapPortId . '.' . $this->nokiaEncap($sapEncapValue);

            // Any unused vlan on a port returns * in sapEncapValue but had OID .4095
            $specialQinQIdentifier = $this->nokiaEncap($sapEncapValue);
            if ($specialQinQIdentifier == '*') {
                $specialQinQIdentifier = '4095';
                $traffic_id = $svcId . '.' . $sapPortId . '.' . $specialQinQIdentifier;
            }

            $saps->push(new MplsSap([
                'svc_id' => $svc_id,
                'svc_oid' => $svcId,
                'sapPortId' => $sapPortId,
                'ifName' => $ifIndexNames->get($sapPortId),
                'device_id' => $this->getDeviceId(),
                'sapEncapValue' => $this->nokiaEncap($sapEncapValue),
                'sapRowStatus' => $value['sapRowStatus'],
                'sapType' => $value['sapType'],
                'sapDescription' => $value['sapDescription'],
                'sapAdminStatus' => $value['sapAdminStatus'],
                'sapOperStatus' => $value['sapOperStatus'],
                'sapLastMgmtChange' => round($value['sapLastMgmtChange'] / 100),
                'sapLastStatusChange' => round($value['sapLastStatusChange'] / 100),
            ]));
            //create SAP graphs
            $rrd_name = \LibreNMS\Data\Store\Rrd::safeName('sap-' . $traffic_id);
            $rrd_def = RrdDefinition::make()
            ->addDataset('sapIngressBits', 'COUNTER', 0)
            ->addDataset('sapEgressBits', 'COUNTER', 0)
            ->addDataset('sapIngressDroppedBits', 'COUNTER', 0)
            ->addDataset('sapEgressDroppedBits', 'COUNTER', 0);

            $fields = [
                'sapIngressBits' => (($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressPchipOfferedLoPrioOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressPchipOfferedHiPrioOctets'] ?? 0)) * 8,
                'sapEgressBits' => (($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipForwardedOutProfOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipForwardedInProfOctets'] ?? 0)) * 8,
                'sapIngressDroppedBits' => (($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressQchipDroppedLoPrioOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsIngressQchipDroppedHiPrioOctets'] ?? 0)) * 8,
                'sapEgressDroppedBits' => (($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipDroppedOutProfOctets'] ?? 0) + ($mplsSapTrafficCache[$traffic_id]['sapBaseStatsEgressQchipDroppedInProfOctets'] ?? 0)) * 8,
            ];

            $tags = [
                'traffic_id' => $traffic_id,
                'rrd_name' => $rrd_name,
                'rrd_def' => $rrd_def,
            ];

            app('Datastore')->put($this->getDeviceArray(), 'sap', $tags, $fields);
            $this->enableGraph('sap');
        }

        return $saps;
    }

    /**
     * @return Collection MplsSDpBind objects
     */
    public function pollMplsSdpBinds($sdps, $svcs)
    {
        $mplsBindCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sdpBindTable', [], 'TIMETRA-SDP-MIB', 'nokia', '-OQUsbt');
        $mplsBindCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'sdpBindBaseStatsTable', $mplsBindCache, 'TIMETRA-SDP-MIB', 'nokia', '-OQUsb');

        $binds = new Collection();
        foreach ($mplsBindCache as $key => $value) {
            [$svcId] = explode('.', $key);
            $bind_id = str_replace(' ', '', $value['sdpBindId'] ?? '');
            $sdp_oid = hexdec(substr($bind_id, 0, 8));
            $svc_oid = hexdec(substr($bind_id, 9, 16));
            $sdp_id = $sdps->firstWhere('sdp_oid', $sdp_oid)->sdp_id;
            $svc_id = $svcs->firstWhere('svc_oid', $svcId)->svc_id;
            if (isset($sdp_id, $svc_id, $sdp_oid, $svc_oid)) {
                $binds->push(new MplsSdpBind([
                    'sdp_id' => $sdp_id,
                    'svc_id' => $svc_id,
                    'sdp_oid' => $sdp_oid,
                    'svc_oid' => $svc_oid,
                    'device_id' => $this->getDeviceId(),
                    'sdpBindRowStatus' => $value['sdpBindRowStatus'] ?? null,
                    'sdpBindAdminStatus' => $value['sdpBindAdminStatus'] ?? null,
                    'sdpBindOperStatus' => $value['sdpBindOperStatus'] ?? null,
                    'sdpBindLastMgmtChange' => round(($value['sdpBindLastMgmtChange'] ?? 0) / 100),
                    'sdpBindLastStatusChange' => round(($value['sdpBindLastStatusChange'] ?? 0) / 100),
                    'sdpBindType' => $value['sdpBindType'] ?? null,
                    'sdpBindVcType' => $value['sdpBindVcType'] ?? null,
                    'sdpBindBaseStatsIngFwdPackets' => $value['sdpBindBaseStatsIngressForwardedPackets'] ?? null,
                    'sdpBindBaseStatsIngFwdOctets' => $value['sdpBindBaseStatsIngFwdOctets'] ?? null,
                    'sdpBindBaseStatsEgrFwdPackets' => $value['sdpBindBaseStatsEgressForwardedPackets'] ?? null,
                    'sdpBindBaseStatsEgrFwdOctets' => $value['sdpBindBaseStatsEgressForwardedOctets'] ?? null,
                ]));
            }
        }

        return $binds;
    }

    /**
     * @return Collection MplsTunnelArHop objects
     */
    public function pollMplsTunnelArHops($paths)
    {
        $mplsTunnelArHopCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'mplsTunnelARHopTable', [], 'MPLS-TE-MIB', 'nokia', '-OQUsbt');
        $mplsTunnelArHopCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsTunnelARHopTable', $mplsTunnelArHopCache, 'TIMETRA-MPLS-MIB', 'nokia', '-OQUsb');

        // vRtrMplsTunnelARHopProtection Bits
        $localAvailable = 0b10000000;
        $localInUse = 0b01000000;
        $bandwidthProtected = 0b00100000;
        $nodeProtected = 0b00010000;
        $preemptionPending = 0b00001000;
        $nodeId = 0b00000100;

        $arhops = new Collection();
        foreach ($mplsTunnelArHopCache as $key => $value) {
            [$mplsTunnelARHopListIndex, $mplsTunnelARHopIndex] = explode('.', $key);
            $firstPath = $paths->firstWhere('mplsLspPathTunnelARHopListIndex', $mplsTunnelARHopListIndex);
            if (! isset($firstPath)) {
                continue;
            }
            $lsp_path_id = $firstPath->lsp_path_id;
            $protection = intval($value['vRtrMplsTunnelARHopProtection'] ?? 0, 16);

            $localLinkProtection = ($protection & $localAvailable) ? 'true' : 'false';
            $linkProtectionInUse = ($protection & $localInUse) ? 'true' : 'false';
            $bandwidthProtection = ($protection & $bandwidthProtected) ? 'true' : 'false';
            $nextNodeProtection = ($protection & $nodeProtected) ? 'true' : 'false';

            $ARHopRouterId = $value['vRtrMplsTunnelARHopRouterId'] ?? null;
            if (isset($value['vRtrMplsTunnelARHopNgRouterId'])) {
                $ARHopRouterId = long2ip(hexdec(str_replace(' ', '', $value['vRtrMplsTunnelARHopNgRouterId'])));
            }

            if (isset($mplsTunnelARHopListIndex, $mplsTunnelARHopIndex, $lsp_path_id)) {
                $arhops->push(new MplsTunnelArHop([
                    'mplsTunnelARHopListIndex' => $mplsTunnelARHopListIndex,
                    'mplsTunnelARHopIndex' => $mplsTunnelARHopIndex,
                    'lsp_path_id' => $lsp_path_id,
                    'device_id' => $this->getDeviceId(),
                    'mplsTunnelARHopAddrType' => $value['mplsTunnelARHopAddrType'] ?? null,
                    'mplsTunnelARHopIpv4Addr' => $value['mplsTunnelARHopIpv4Addr'] ?? null,
                    'mplsTunnelARHopIpv6Addr' => $value['mplsTunnelARHopIpv6Addr'] ?? null,
                    'mplsTunnelARHopAsNumber' => $value['mplsTunnelARHopAsNumber'] ?? null,
                    'mplsTunnelARHopStrictOrLoose' => $value['mplsTunnelARHopStrictOrLoose'] ?? null,
                    'mplsTunnelARHopRouterId' => $ARHopRouterId,
                    'localProtected' => $localLinkProtection,
                    'linkProtectionInUse' => $linkProtectionInUse,
                    'bandwidthProtected' => $bandwidthProtection,
                    'nextNodeProtected' => $nextNodeProtection,
                ]));
            }
        }

        return $arhops;
    }

    /**
     * @return Collection MplsTunnelCHop objects
     */
    public function pollMplsTunnelCHops($paths)
    {
        $mplsTunnelCHopCache = snmpwalk_cache_multi_oid($this->getDeviceArray(), 'vRtrMplsTunnelCHopTable', [], 'TIMETRA-MPLS-MIB', 'nokia', '-OQUsb');
        $path_ids = $paths->pluck('lsp_path_id', 'mplsLspPathTunnelCHopListIndex');

        $chops = new Collection();
        foreach ($mplsTunnelCHopCache as $key => $value) {
            [$mplsTunnelCHopListIndex, $mplsTunnelCHopIndex] = explode('.', $key);
            $lsp_path_id = $path_ids[$mplsTunnelCHopListIndex] ?? null;

            $chops->push(new MplsTunnelCHop([
                'mplsTunnelCHopListIndex' => $mplsTunnelCHopListIndex,
                'mplsTunnelCHopIndex' => $mplsTunnelCHopIndex,
                'lsp_path_id' => $lsp_path_id,
                'device_id' => $this->getDeviceId(),
                'mplsTunnelCHopAddrType' => $value['vRtrMplsTunnelCHopAddrType'] ?? null,
                'mplsTunnelCHopIpv4Addr' => $value['vRtrMplsTunnelCHopIpv4Addr'] ?? null,
                'mplsTunnelCHopIpv6Addr' => $value['vRtrMplsTunnelCHopIpv6Addr'] ?? null,
                'mplsTunnelCHopAsNumber' => $value['vRtrMplsTunnelCHopAsNumber'] ?? null,
                'mplsTunnelCHopStrictOrLoose' => $value['vRtrMplsTunnelCHopStrictOrLoose'] ?? null,
                'mplsTunnelCHopRouterId' => $value['vRtrMplsTunnelCHopRtrID'] ?? null,
            ]));
        }

        return $chops;
    }

    public function discoverWirelessSnr()
    {
        $sensors = [];

        $data = snmpwalk_cache_oid($this->getDeviceArray(), 'tmnxCellPortSinr', [], 'TIMETRA-CELLULAR-MIB');
        $carrier = $this->getCacheTable('ifName', 'IF-MIB');
        foreach ($data as $index => $entry) {
            $sensors[] = new WirelessSensor(
                'snr',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.3.1.2.109.3.1.1.1.12.' . $index,
                'timos',
                $index,
                'SNR: ' . $carrier[$index]['ifName'],
                null,
                1,
                10
            );
        }

        return $sensors;
    }

    public function discoverWirelessRsrq()
    {
        $sensors = [];

        $data = snmpwalk_cache_oid($this->getDeviceArray(), 'tmnxCellPortRsrq', [], 'TIMETRA-CELLULAR-MIB');
        $carrier = $this->getCacheTable('ifName', 'IF-MIB');
        foreach ($data as $index => $entry) {
            $sensors[] = new WirelessSensor(
                'rsrq',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.3.1.2.109.3.1.1.1.11.' . $index,
                'timos',
                $index,
                'RSRQ: ' . $carrier[$index]['ifName'],
                null,
                1,
                1
            );
        }

        return $sensors;
    }

    public function discoverWirelessRssi()
    {
        $sensors = [];

        $data = snmpwalk_cache_oid($this->getDeviceArray(), 'tmnxCellPortRssi', [], 'TIMETRA-CELLULAR-MIB');
        $carrier = $this->getCacheTable('ifName', 'IF-MIB');
        foreach ($data as $index => $entry) {
            $sensors[] = new WirelessSensor(
                'rssi',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.3.1.2.109.3.1.1.1.8.' . $index,
                'timos',
                $index,
                'RSSI: ' . $carrier[$index]['ifName']
            );
        }

        return $sensors;
    }

    public function discoverWirelessRsrp()
    {
        $sensors = [];

        $data = snmpwalk_cache_oid($this->getDeviceArray(), 'tmnxCellPortRsrp', [], 'TIMETRA-CELLULAR-MIB');
        $carrier = $this->getCacheTable('ifName', 'IF-MIB');
        foreach ($data as $index => $entry) {
            $sensors[] = new WirelessSensor(
                'rsrp',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.3.1.2.109.3.1.1.1.9.' . $index,
                'timos',
                $index,
                'RSRP: ' . $carrier[$index]['ifName']
            );
        }

        return $sensors;
    }

    public function discoverWirelessChannel()
    {
        $sensors = [];

        $data = snmpwalk_cache_oid($this->getDeviceArray(), 'tmnxCellPortChannelNumber', [], 'TIMETRA-CELLULAR-MIB');
        $carrier = $this->getCacheTable('ifName', 'IF-MIB');
        foreach ($data as $index => $entry) {
            $sensors[] = new WirelessSensor(
                'channel',
                $this->getDeviceId(),
                '.1.3.6.1.4.1.6527.3.1.2.109.3.1.1.1.5.' . $index,
                'timos',
                $index,
                'CHANNEL: ' . $carrier[$index]['ifName'],
                null,
                1,
                1
            );
        }

        return $sensors;
    }

    public function discoverEntityPhysical(): Collection
    {
        $inventory = new Collection;

        $chassis = \SnmpQuery::walk('TIMETRA-CHASSIS-MIB::tmnxChassisType')->pluck();
        $chassisTypes = \SnmpQuery::walk('TIMETRA-CHASSIS-MIB::tmnxChassisTypeTable')->table(1);
        $hardware = \SnmpQuery::enumStrings()->walk('TIMETRA-CHASSIS-MIB::tmnxHwTable');

        foreach ($hardware->table(2) as $tmnxChassisIndex => $chassisContents) {
            $type = $chassis[$tmnxChassisIndex];

            if (isset($chassisTypes[$type])) {
                $inventory->push(new EntPhysical([
                    'entPhysicalIndex' => $tmnxChassisIndex,
                    'entPhysicalDescr' => $chassisTypes[$type]['TIMETRA-CHASSIS-MIB::tmnxChassisTypeDescription'] ?? null,
                    'entPhysicalClass' => 'chassis',
                    'entPhysicalContainedIn' => 0,
                    'entPhysicalName' => $chassisTypes[$type]['TIMETRA-CHASSIS-MIB::tmnxChassisTypeName'] ?? null,
                ]));
            }

            foreach ($chassisContents as $tmnxHwIndex => $entry) {
                $inventory->push(new EntPhysical([
                    'entPhysicalIndex' => $tmnxHwIndex,
                    'entPhysicalClass' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwClass'],
                    //                    'entPhysicalDescr' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwID'],
                    'entPhysicalName' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwName'],
                    'entPhysicalModelName' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwMfgBoardNumber'],
                    'entPhysicalSerialNum' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwSerialNumber'],
                    'entPhysicalContainedIn' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwContainedIn'],
                    'entPhysicalMfgName' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwMfgBoardNumber'],
                    'entPhysicalParentRelPos' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwParentRelPos'],
                    'entPhysicalHardwareRev' => '1.0',
                    'entPhysicalFirmwareRev' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwBootCodeVersion'],
                    'entPhysicalSoftwareRev' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwBootCodeVersion'],
                    'entPhysicalIsFRU' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwIsFRU'],
                    'entPhysicalAlias' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwAlias'],
                    'entPhysicalAssetID' => $entry['TIMETRA-CHASSIS-MIB::tmnxHwAssetID'],
                ]));
            }
        }

        return $inventory;
    }
}
