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copilot/spikes/graphs-matrix/chartjs/server/metric.js

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const async = require('async');
const disk = require('diskusage');
const os = require('os');
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const cdm = {};
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const getCPU = (fn) => {
return fn(null, {
user: os.cpus().reduce((sum, cpu) => sum + cpu.times.user, 0),
sys: os.cpus().reduce((sum, cpu) => sum + cpu.times.sys, 0)
});
};
const getMem = (fn) => {
const free = os.freemem();
const total = os.totalmem();
const using = total - free;
const perc = (using / total) * 100;
return fn(null, {
used: perc
});
};
const getDisk = (fn) => {
disk.check('/', fn);
};
const getStats = (fn) => {
async.parallel({
cpu: getCPU,
mem: getMem,
disk: getDisk
}, fn);
};
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module.exports = (server) => ({
on: (id) => {
console.log('on', cdm[id]);
if (cdm[id] && (cdm[id].sockets > 0)) {
cdm[id].sockets +=1;
return;
}
let messageId = 0;
const interval = setInterval(() => {
console.log(`publishing /stats/${id}`);
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getStats((err, stats) => {
server.publish(`/stats/${id}`, {
when: new Date().getTime(),
stats
});
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});
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}, 1000);
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cdm[id] = {
interval,
sockets: 1
};
},
off: (id) => {
if (!(cdm[id].sockets -= 1)) {
clearInterval(cdm[id].interval);
}
}
});