logHelper.js

const os = require('os');
const net = require('net');
const packageFile = require('../package.json');

const checkConnection = (host, port, timeout = 5000) =>
	new Promise((resolve, reject) => {
		const timer = setTimeout(() => {
			socket.end();
			reject(new Error('Connection takes more than ' + 5000 + ' ms'));
		}, timeout);

		const socket = net.createConnection(port, host, () => {
			socket.end();
			clearTimeout(timer);
			resolve();
		});
		socket.on('error', err => {
			clearTimeout(timer);
			reject(err);
		});
	});

const getPluginVersion = () => packageFile.version;

const getSystemInfo = connectionInfo => {
	return (
		'' +
		`Date: ${new Date()}` +
		'\n' +
		`Application version: ${connectionInfo.appVersion}` +
		'\n' +
		`Plugin version: ${getPluginVersion()}` +
		'\n\n' +
		`Connection information:` +
		'\n' +
		` Connection name:  ${connectionInfo.name}` +
		'\n' +
		` Host:  ${connectionInfo.host}` +
		'\n' +
		` Cluster id:  ${connectionInfo.clusterId}` +
		'\n' +
		` Provider:  ${connectionInfo.provider}` +
		'\n\n' +
		`System information:` +
		'\n' +
		` Hostname:  ${os.hostname()}` +
		'\n' +
		` Platform:  ${os.platform()} ${os.arch()}` +
		'\n' +
		` Release:   ${os.release()}` +
		'\n' +
		` Uptime:    ${toTime(os.uptime())}` +
		'\n' +
		` Total RAM: ${(os.totalmem() / 1073741824).toFixed(2)} GB` +
		'\n' +
		` CPU Model: ${os.cpus()[0].model}` +
		'\n' +
		` CPU Clock: ${maxClock(os.cpus())} MHZ` +
		'\n' +
		` CPU Cores: ${os.cpus().length} cores` +
		'\n\n'
	);
};

const maxClock = cpus => {
	return cpus.reduce((highestClock, cpu) => Math.max(highestClock, cpu.speed), 0);
};

const prefixZero = number => (number < 10 ? '0' + number : number);

const toTime = number => {
	return Math.floor(number / 3600) + ':' + prefixZero(parseInt((number / 3600 - Math.floor(number / 3600)) * 60));
};

const logHelper = {
	getSystemInfo,
	checkConnection,
};

module.exports = logHelper;