nodejs 获取内存，网络 ，连接 ，磁盘等等
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util
建立一个util，计算使用
var utils = {}
utils.humanFileSize = function(bytes, isDecimal) {
isDecimal = (typeof isDecimal !== 'undefined') ? isDecimal : false;
if (bytes == 0) {
return "0.00 B";
}
var base = isDecimal ? 1000 : 1024;
var e = Math.floor(Math.log(bytes) / Math.log(base));
return (bytes / Math.pow(base, e)).toFixed(2) + ' ' + ' KMGTP'.charAt(e) + (isDecimal || e == 0 ? '' : 'i') + 'B';
}
utils.colors = ['magenta', 'cyan', 'blue', 'yellow', 'green', 'red'];
module.exports = utils;
进程
所有进程
/**
* author :钱波
* 抓取所有进程
* */
var si = require('systeminformation'),
utils = require('./utils');
var hashmap = require('hashmap')
//var colors = utils.colors;
class proc_class {
//var hashmap
say(callback) {
si.processes()
.then(data => {
//var pu = [];
this.hashmap_pid = new hashmap();
this.array = [];
var data1 = data.list
.map(p => {
var value = {
pid: p.pid,
cmd: p.name, //.slice(0,10),
cpuuse: p.pcpu.toFixed(1),
memuse: p.pmem.toFixed(1)
}
this.hashmap_pid.set('"'+p.pid+'"', value)
this.array.push(value);
//pu.push()
})
if (callback != null) {
// console.log("...start to print...",this.hashmap_pid);
callback(this.array);
}
})
.catch(error => console.error(error));
}
getpidname(id) {
//console.log("hashmap", this.hashmap_pid);
//console.log("want to find", id);
let test = this.hashmap_pid.get(id);
//console.log("test is ", test);
if (test != null) {
return test.cmd;
//console.log("find it",test);
}
return null;
//return this.hashmap_pid;
}
}
## 网络
module.exports = new proc_class();
/*
* unit test
//function call(data) {
// console.log(data);
//}
//var proc = new proc_class();
//proc.say(call);
*/
var si = require('systeminformation'),
utils = require('./utils');
class net_class {
updateData(data,callback) {
//console.log(data);
var rx_sec = Math.max(0, data['rx_sec']);
var tx_sec = Math.max(0, data['tx_sec']);
//this.netData[0].shift();
//this.netData[0].push(rx_sec);
//this.netData[1].shift();
//this.netData[1].push(tx_sec);
//rx_label = 'Receiving: ' +
// utils.humanFileSize(rx_sec) +
// '/s \nTotal received: ' +
// utils.humanFileSize(data['rx_bytes']);
//tx_label = 'Transferring: ' +
// utils.humanFileSize(tx_sec) +
// '/s \nTotal transferred: ' +
// utils.humanFileSize(data['tx_bytes']);
if (callback != null) {
callback(
{
rxsec: utils.humanFileSize(rx_sec),
txsec: utils.humanFileSize(tx_sec),
total_r: utils.humanFileSize(data['rx_bytes']),
total_s: utils.humanFileSize(data['tx_bytes'])
}
)
}
};
say(callback) {
si.networkInterfaceDefault(iface => {
var that = this;
var updater = function () {
si.networkStats(iface, data => {
that.updateData(data[0],callback);
});
}
updater();
})
}
}
module.exports = new net_class();
磁盘
/**
* author :钱波
* 抓取所有磁盘，注意不适合windows
* */
var si = require('systeminformation'),
utils = require('./utils');
//var colors = utils.colors;
class disk_class {
say(callback) {
si.fsSize()
.then(data => {
var disk = data[0];
//console.log(disk)
data = [{
use: utils.humanFileSize(disk.used, true),
size: utils.humanFileSize(disk.size, true),
percent: disk.use / 100
}];
if (callback != null)
callback(data);
})
.catch(error => console.error(error))
}
}
module.exports = new disk_class();
//unit test
//function call(data) {
// console.log(data);
//}
//var disk = new disk_class();
//disk.say(call);
//module.exports = Disk;
cpu
var si = require('systeminformation');
var hashmap = require('hashmap')
class cpu_class{
constructor() {
this.cpumap = new hashmap();
si.currentLoad()
.then(data => {
data.cpus.map((cpu, i) => {
var x = Array(61).fill(0);
this.cpumap.set("CPU" + i+1, x);
//console.log(cpu.load);
})
})
.catch(error => console.error(error))
}
say(callback) {
si.currentLoad()
.then(data => {
if (callback != null)
callback(data.currentload);
//console.log(data.currentload);
//console.log(data.avgload, data.currentload_system);
data.cpus.map((cpu, i) => {
let name = "CPU" + i + 1;
let objArray = this.cpumap.get(name);
objArray.shift();
objArray.push(cpu.load);
//if(i == 0)
// console.log(objArray);
})
})
.catch(error => console.error(error))
}
}
module.exports = new cpu_class();
//钱波 unit test
//var cpu = new cpu_class();
//cpu.say();
//setInterval(() => {
// cpu.say();
//}, 1000);
//si.cpu()
// .then(data => {
// console.log('CPU Information:');
// console.log('- manufucturer: ' + data.manufacturer);
// console.log('- brand: ' + data.brand);
// console.log('- speed: ' + data.speed);
// console.log('- cores: ' + data.cores);
// console.log('- physical cores: ' + data.physicalCores);
// console.log('...');
// })
// .catch(error => console.error(error));
内存
var si = require('systeminformation'),
utils = require('./utils');
var mem_Count;
var mem_Swap;
class mem_class {
say(callback) {
si.mem()
.then(data => {
var memPer = (100 * (1 - data.available / data.total)).toFixed();
var swapPer = (100 * (1 - data.swapfree / data.swaptotal)).toFixed();
swapPer = isNaN(swapPer) ? 0 : swapPer;
var memTitle =
utils.humanFileSize(data.total - data.available) +
' of ' +
utils.humanFileSize(data.total);
var swapTitle =
utils.humanFileSize(data.swaptotal - data.swapfree) +
' of ' +
utils.humanFileSize(data.swaptotal);
mem_Count = {
percent: memPer / 100,
label: memTitle,
};
mem_Swap = {
percent: swapPer / 100,
label: swapTitle
}
console.log(mem_Count, mem_Swap);
})
.catch(error => console.error(error))
}
}
module.exports = new mem_class();
/**
* 单元测试
* @param {any} data
*/
//function call(data) {
// console.log(data);
// //console.log("test");
//}
//var mem = new mem_class();
//mem.say(call);
//module.exports = Mem;
所有连接
// JavaScript source code
var si = require('systeminformation');
const proc = require('./proc_0');
class connection {
//procdata 进程信息
say(callback) {
//this.callback = callback;
proc.say(function (procdata) {
si.networkConnections()
.then(data => {
var pu = [];
data.map((net, i) => {
if (net.state == 'LISTEN') {
// console.log(net);
//console.log("net pid", net.pid);
//console.log("get pid name",proc.getpidname('"'+net.pid+'"'));
let name = proc.getpidname('"' + net.pid + '"');
//console.log(name);
if (name != null) {
net.procname = name;
}
pu.push(net);
//console.log(net);
}
});
if (callback != null) {
callback(pu);
//console.log("pu", pu);
}
})
.catch(error => console.error(error));
});
}
}
module.exports = new connection();
/*
* unit test
//包含连接信息和连接的进程名称
function callback(data) {
console.log(data);
}
var x = new connection();
x.say(callback);
*/