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monitor-agent.js
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monitor-agent.js
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var kstat = require('kstat');
var prom = require('prom-client');
function MonitorAgent() {
// kstat caps:1:cpucaps_zone_1:*
var reader = new kstat.Reader(
{
'class': 'zone_caps',
module: 'caps',
name: 'cpucaps_zone_1',
instance: '1'
});
var data = [];
var gen = 0;
var cpuCapsUsageGauge = new prom.gauge('cpucaps_z1_usage', 'z1hlp1');
var cpuCapsBelowGauge = new prom.gauge('cpucaps_z1_below', 'z1hlp2');
var cpuCapsAboveGauge = new prom.gauge('cpucaps_z1_above', 'z1hlp3');
setInterval(function _getKstats() {
data[gen] = reader.read()[0];
gen ^= 1;
if (!(data[0] && data[1])) {
return;
}
cpuCapsUsageGauge.set(data[gen ^ 1].data.usage);
cpuCapsBelowGauge.set(data[gen ^ 1].data.below_sec);
cpuCapsAboveGauge.set(data[gen ^ 1].data.above_sec);
}, 5000);
// kstat memory_cap:::, "rss" vs "physcap", "swap" vs "swapcap"
var reader2 = new kstat.Reader(
{
'class': 'zone_memory_cap',
module: 'memory_cap',
instance: '1'
});
var data2 = [];
var gen2 = 0;
var memCapsRssGauge = new prom.gauge('memcaps_z1_rss', 'z1hl4');
var memCapsSwapGauge = new prom.gauge('memcaps_z1_swap', 'z1hl5');
var memCapsPageInGauge = new prom.gauge('memcaps_z1_anonpgin', 'z1hl6');
var memCapsAllocFailGauge = new prom.gauge('memcaps_z1_allocfail', 'z1hl6');
setInterval(function _getKstats2() {
data2[gen2] = reader2.read()[0];
gen2 ^= 1;
if (!(data2[0] && data2[1])) {
return;
}
memCapsRssGauge.set(data2[gen2 ^ 1].data.rss);
memCapsSwapGauge.set(data2[gen2 ^ 1].data.swap);
memCapsPageInGauge.set(data2[gen2 ^ 1].data.anonpgin);
memCapsAllocFailGauge.set(data2[gen2 ^ 1].data.anon_alloc_fail);
}, 5000);
}
MonitorAgent.prototype.getMetrics = function () {
return prom.register.metrics();
};
module.exports = MonitorAgent;