<?php

use LibreNMS\RRD\RrdDefinition;

// Poll systemStats from UNIX-like hosts running UCD/Net-SNMPd
// UCD-SNMP-MIB::ssIndex.0 = INTEGER: 1
// UCD-SNMP-MIB::ssErrorName.0 = STRING: systemStats
// UCD-SNMP-MIB::ssSwapIn.0 = INTEGER: 0 kB
// UCD-SNMP-MIB::ssSwapOut.0 = INTEGER: 0 kB
// UCD-SNMP-MIB::ssIOSent.0 = INTEGER: 1864 blocks/s
// UCD-SNMP-MIB::ssIOReceive.0 = INTEGER: 7 blocks/s
// UCD-SNMP-MIB::ssSysInterrupts.0 = INTEGER: 7572 interrupts/s
// UCD-SNMP-MIB::ssSysContext.0 = INTEGER: 10254 switches/s
// UCD-SNMP-MIB::ssCpuUser.0 = INTEGER: 4
// UCD-SNMP-MIB::ssCpuSystem.0 = INTEGER: 3
// UCD-SNMP-MIB::ssCpuIdle.0 = INTEGER: 77
// UCD-SNMP-MIB::ssCpuRawUser.0 = Counter32: 194386556
// UCD-SNMP-MIB::ssCpuRawNice.0 = Counter32: 15673
// UCD-SNMP-MIB::ssCpuRawSystem.0 = Counter32: 65382910
// UCD-SNMP-MIB::ssCpuRawIdle.0 = Counter32: 1655192684
// UCD-SNMP-MIB::ssCpuRawWait.0 = Counter32: 205336019
// UCD-SNMP-MIB::ssCpuRawKernel.0 = Counter32: 0
// UCD-SNMP-MIB::ssCpuRawInterrupt.0 = Counter32: 1128048
// UCD-SNMP-MIB::ssIORawSent.0 = Counter32: 2353983704
// UCD-SNMP-MIB::ssIORawReceived.0 = Counter32: 3172182750
// UCD-SNMP-MIB::ssRawInterrupts.0 = Counter32: 427446276
// UCD-SNMP-MIB::ssRawContexts.0 = Counter32: 4161026807
// UCD-SNMP-MIB::ssCpuRawSoftIRQ.0 = Counter32: 2605010
// UCD-SNMP-MIB::ssRawSwapIn.0 = Counter32: 602002
// UCD-SNMP-MIB::ssRawSwapOut.0 = Counter32: 937422
// UCD-SNMP-MIB::ssCpuRawWait.0
// UCD-SNMP-MIB::ssCpuRawSteal.0

$ss = snmpwalk_cache_oid($device, 'systemStats', [], 'UCD-SNMP-MIB');
if (isset($ss[0])) {
    $ss = $ss[0];

    if (isset($ss['ssCpuRawUser']) && is_numeric($ss['ssCpuRawUser'])
        && isset($ss['ssCpuRawNice']) && is_numeric($ss['ssCpuRawNice'])
        && isset($ss['ssCpuRawSystem']) && is_numeric($ss['ssCpuRawSystem'])
        && isset($ss['ssCpuRawIdle']) && is_numeric($ss['ssCpuRawIdle'])) {
        $rrd_def = RrdDefinition::make()
            ->addDataset('user', 'COUNTER', 0)
            ->addDataset('system', 'COUNTER', 0)
            ->addDataset('nice', 'COUNTER', 0)
            ->addDataset('idle', 'COUNTER', 0);

        $fields = [
            'user' => $ss['ssCpuRawUser'],
            'system' => $ss['ssCpuRawSystem'],
            'nice' => $ss['ssCpuRawNice'],
            'idle' => $ss['ssCpuRawIdle'],
        ];

        $tags = compact('rrd_def');
        data_update($device, 'ucd_cpu', $tags, $fields);

        $os->enableGraph('ucd_cpu');
    }

    // This is how we'll collect in the future, start now so people don't have zero data.
    $collect_oids = [
        'ssCpuRawUser',
        'ssCpuRawNice',
        'ssCpuRawSystem',
        'ssCpuRawIdle',
        'ssCpuRawInterrupt',
        'ssCpuRawSoftIRQ',
        'ssCpuRawKernel',
        'ssCpuRawWait',
        'ssIORawSent',
        'ssIORawReceived',
        'ssRawInterrupts',
        'ssRawContexts',
        'ssRawSwapIn',
        'ssRawSwapOut',
        'ssCpuRawWait',
        'ssCpuRawSteal',
    ];

    foreach ($collect_oids as $oid) {
        if (is_numeric($ss[$oid] ?? null)) {
            $rrd_name = 'ucd_' . $oid;
            $rrd_def = RrdDefinition::make()->addDataset('value', 'COUNTER', 0);

            $fields = [
                'value' => $ss[$oid],
            ];

            $tags = compact('oid', 'rrd_name', 'rrd_def');
            data_update($device, 'ucd_cpu', $tags, $fields);

            $os->enableGraph('ucd_cpu');
        }
    }

    // Set various graphs if we've seen the right OIDs.
    if (isset($ss['ssRawSwapIn']) && is_numeric($ss['ssRawSwapIn'])) {
        $os->enableGraph('ucd_swap_io');
    }

    if (isset($ss['ssIORawSent']) && is_numeric($ss['ssIORawSent'])) {
        $os->enableGraph('ucd_io');
    }

    if (isset($ss['ssRawContexts']) && is_numeric($ss['ssRawContexts'])) {
        $os->enableGraph('ucd_contexts');
    }

    if (isset($ss['ssRawInterrupts']) && is_numeric($ss['ssRawInterrupts'])) {
        $os->enableGraph('ucd_interrupts');
    }

    if (isset($ss['ssCpuRawWait']) && is_numeric($ss['ssCpuRawWait'])) {
        $os->enableGraph('ucd_io_wait');
    }

    if (isset($ss['ssCpuRawSteal']) && is_numeric($ss['ssCpuRawSteal'])) {
        $os->enableGraph('ucd_cpu_steal');
    }
}

//
// Poll laLoadInt for load averages on UNIX-like hosts running UCD/Net-SNMPd
// UCD-SNMP-MIB::laLoadInt.1 = INTEGER: 206
// UCD-SNMP-MIB::laLoadInt.2 = INTEGER: 429
// UCD-SNMP-MIB::laLoadInt.3 = INTEGER: 479
$load_raw = snmp_get_multi($device, ['laLoadInt.1', 'laLoadInt.2', 'laLoadInt.3'], '-OQUs', 'UCD-SNMP-MIB');

// Check to see that the 5-min OID is actually populated before we make the rrd
if (is_numeric($load_raw[2]['laLoadInt'] ?? null)) {
    $rrd_def = RrdDefinition::make()
        ->addDataset('1min', 'GAUGE', 0)
        ->addDataset('5min', 'GAUGE', 0)
        ->addDataset('15min', 'GAUGE', 0);

    $fields = [
        '1min' => $load_raw[1]['laLoadInt'],
        '5min' => $load_raw[2]['laLoadInt'],
        '15min' => $load_raw[3]['laLoadInt'],
    ];

    $tags = compact('rrd_def');
    data_update($device, 'ucd_load', $tags, $fields);

    $os->enableGraph('ucd_load');
}

unset($ss, $load_raw, $snmpdata);
unset($key, $collect_oids, $rrd_name, $rrd_def, $oid);