Initial commit

2019-03-01 21:44:08 +02:00 · 2019-03-01 21:44:08 +02:00 · c22caed446
commit c22caed446
9 changed files with 833 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+node_modules/
--- a/package-lock.json
+++ b/package-lock.json
@ -0,0 +1,363 @@
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+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
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+  }
+}
--- a/package.json
+++ b/package.json
@ -0,0 +1,16 @@
+{
+  "name": "quickstatus",
+  "version": "1.0.0",
+  "description": "Get system status in JSON format",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "output": "node system.js"
+  },
+  "private": true,
+  "license": "CC0",
+  "dependencies": {
+    "express": "^4.16.4",
+    "node-os-utils": "^1.0.7"
+  }
+}
--- a/public/dark-theme.css
+++ b/public/dark-theme.css
@ -0,0 +1,20 @@
+body {
+	background-color: #00060e;
+}
+.infobox {
+	color: #ddd;
+}
+.infobox .header {
+    background-color: #393939;
+    border: 1px solid #454545;
+}
+.infobox .content {
+    background-color: #242424;
+    border: 1px solid #454545;
+}
+.bar-inner {
+    background-color: #181818;
+}
+.bar-progress {
+    background-color: #00626e;
+}
--- a/public/index.css
+++ b/public/index.css
@ -0,0 +1,87 @@
+body {
+	margin: 0;
+	padding: 0;
+	font-family: sans-serif, sans;
+	background-color: #f0f0f0;
+}
+#app {
+    margin: 10px 120px;
+}
+h1,h2,h3,h4 {
+	margin: 0;
+}
+.infobox {
+	margin: 5px;
+}
+.infobox .header {
+    background-color: #f3f3f3;
+    padding: 15px;
+    /*border-radius: 10px 10px 0 0;*/
+    border: 1px solid #ddd;
+	border-bottom: 0;
+}
+.infobox .content {
+    padding: 10px;
+    background-color: #ececec;
+    border: 1px solid #ddd;
+}
+.infobox-row {
+    display: flex;
+    flex-direction: row;
+}
+.infobox-row .infobox {
+    flex-grow: 1;
+}
+.row {
+    margin-bottom: 5px;
+}
+.row label {
+    min-width: 50%;
+    display: inline-block;
+}
+.bar-inner {
+    height: 40px;
+    background-color: #ddd;
+    border-radius: 5px;
+}
+.bar-progress {
+    height: 40px;
+    background-color: #00c9e1;
+    border-radius: 5px;
+}
+.bar-stats {
+    display: flex;
+    flex-direction: row;
+	margin-top: 5px;
+}
+.bar-stats span {
+	flex-grow: 1;
+	color: #9c9c9c;
+}
+.bar-stats .stat-now {
+	text-align: center;
+}
+.bar-stats .stat-high {
+	text-align: right;
+}
+.ip-addr {
+    display: block;
+}
+.sec-info {
+    margin-top: 20px;
+    margin-bottom: 10px;
+}
+.disks .disk {
+    margin-bottom: 20px;
+}
+@media only screen and (max-width: 800px) {
+	#app {
+		margin: 15px;
+	}
+	.infobox-row {
+		display: block;
+	}
+	.infobox {
+		width: 100%;
+	}
+}
--- a/public/index.html
+++ b/public/index.html
@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, initial-scale=1.0">
+		<link rel="stylesheet" type="text/css" href="index.css">
+		<link rel="stylesheet" type="text/css" href="dark-theme.css">
+		<title>Please Wait..</title>
+	</head>
+	<body>
+		<div id="app">
+			<h1>Gathering the latest information, please wait..</h1>
+		</div>
+		<script src="index.js"></script>
+	</body>
+</html>
--- a/public/index.js
+++ b/public/index.js
@ -0,0 +1,203 @@
+(function () {
+  let app = document.getElementById('app')
+
+  function httpGet (url) {
+    let request = new XMLHttpRequest()
+    return new Promise(function (resolve, reject) {
+      request.onreadystatechange = function () {
+        if (this.readyState === 4) {
+          if (this.status === 200) {
+            resolve(this.responseText)
+          } else if (this.response == null && this.status === 0) {
+            reject(new Error('The status server appears to be offile.'))
+          }
+        }
+      }
+
+      request.open("GET", url, true)
+      request.send(null)
+    })
+  }
+
+  function bytesToSize (bytes) {
+    let sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB']
+    if (bytes == 0) return '0 Byte'
+    let i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)))
+    return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i]
+  }
+
+  // Add a zero in front of single-digit numbers
+  function zf (v) {
+    if (v > 9) {
+      return '' + v
+    } else {
+      return '0' + v
+    }
+  }
+
+  // Convert seconds into years days hours minutes seconds(.milliseconds)
+  function readableTime (timems, ignoreMs) {
+    var time = timems | 0
+    var ms = ignoreMs ? '' : '.' + zf((timems * 100) % 100 | 0)
+    if (time < 60) return zf(time) + ms + 's'
+    else if (time < 3600) return zf(time / 60 | 0) + 'm ' + zf(time % 60) + ms + 's'
+    else if (time < 86400) return zf(time / 3600 | 0) + 'h ' + zf((time % 3600) / 60 | 0) + 'm ' + zf((time % 3600) % 60) + ms + 's'
+    else if (time < 31536000) return (time / 86400 | 0) + 'd ' + zf((time % 86400) / 3600 | 0) + 'h ' + zf((time % 3600) / 60 | 0) + 'm ' + zf((time % 3600) % 60) + 's'
+    else return (time / 31536000 | 0) + 'y ' + zf((time % 31536000) / 86400 | 0) + 'd ' + zf((time % 86400) / 3600 | 0) + 'h ' + zf((time % 3600) / 60 | 0) + 'm ' + zf((time % 3600) % 60) + 's'
+  }
+
+  function e (element, content, cl) {
+    let el = document.createElement(element)
+    if (cl) el.className = cl
+    el.innerHTML = content
+    return el.outerHTML
+  }
+
+  function box (type, content) {
+    return e('div', content, type)
+  }
+
+  function bar (metric, value, percentage, low, high) {
+    return box('bar-outer',
+      e('span', metric, 'bar-name') +
+      box('bar-inner',
+        '<div class="bar-progress" style="width: ' + percentage + '%;"></div>'
+      ) +
+      box('bar-stats',
+        e('span', low, 'stat-low') +
+        e('span', value, 'stat-now') +
+        e('span', high, 'stat-high')
+      )
+    )
+  }
+
+  function renderPage (data) {
+    let title = 'Welcome to ' + data.hostname + ' on ' + data.kernel
+    document.title = title
+
+    app.innerHTML = ''
+    app.innerHTML += box('infobox-row',
+    box('general infobox', 
+      box('header',
+        e('h2', 'General')
+      ) +
+      box('content',
+        box('row',
+          e('label', 'Hostname') +
+          e('span', data.hostname)
+        ) + box('row',
+          e('label', 'Uptime') +
+          e('span', readableTime(data.uptime))
+        ) + box('row',
+          e('label', 'Kernel version') +
+          e('span', data.kernel)
+        ) + box('row',
+          e('label', 'Processes') +
+          e('span', data.cpu.processes)
+        )
+      )
+    ) +
+
+    // CPU usage
+    box('cpu infobox', 
+      box('header',
+        e('h2', 'CPU')
+      ) +
+      box('content',
+        box('row',
+          e('label', 'Num. cores') +
+          e('span', data.cpu.count)
+        ) +
+        box('row',
+          e('label', 'Usage') +
+          e('span', Math.floor(data.cpu.usage) + ' %')
+        ) + box('row',
+          e('label', 'Load averages') +
+          e('span', data.cpu.loadAverage[0].toFixed(2) + ', ' + data.cpu.loadAverage[1].toFixed(2) + ', ' + data.cpu.loadAverage[2].toFixed(2))
+        )
+      )
+    ))
+
+    // Memory usage
+    let memuse = (data.memory.total - data.memory.free)
+    app.innerHTML += box('memory infobox',
+      box('header',
+        e('h2', 'Memory')
+      ) +
+      box('content',
+        bar('Memory usage', bytesToSize(memuse), memuse * 100 / data.memory.total, '0 Bytes', bytesToSize(data.memory.total))
+      )
+    )
+
+    // Network interfaces
+    let interfaces = ''
+    for (let int in data.network) {
+      if (int === 'lo') continue
+      let iface = data.network[int]
+      let ips = []
+      for (let ip in iface.addresses) {
+        ips.push(e('span', iface.addresses[ip], 'ip-addr'))
+      }
+      interfaces += box('interface',
+        e('h3', int) +
+        ips.join('') +
+        e('h4', 'Bandwidth', 'sec-info') +
+        box('row',
+          e('label', 'Download') +
+          e('span', bytesToSize(iface.download))
+        ) + box('row',
+          e('label', 'Upload') +
+          e('span', bytesToSize(iface.upload))
+        )
+      )
+    }
+
+    // Disks
+    let disks = ''
+    for (let mount in data.disk) {
+      let disk = data.disk[mount]
+      disks += box('disk',
+        e('h3', 'Mounted on ' + mount) +
+        box('row',
+          e('label', 'Free space') +
+          e('span', disk.freeGb + ' GB')
+        ) + 
+        bar('Disk usage', disk.usedGb + ' GB', disk.usedPercentage, '0 GB', disk.totalGb + ' GB')
+      )
+    }
+
+    app.innerHTML += box('infobox-row',
+      box('network infobox',
+        box('header',
+          e('h2', 'Network Interfaces')
+        ) +
+        box('content',
+          box('interfaces', interfaces)
+        )
+      )+
+
+      box('disk infobox',
+        box('header',
+          e('h2', 'Disk Drives')
+        ) +
+        box('content',
+          box('disks', disks)
+        )
+      )
+    )
+  }
+
+  function update () {
+    httpGet('/status').then(function (data) {
+      try {
+        renderPage(JSON.parse(data))
+      } catch (e) {
+        console.error(e)
+      }
+    }, function (e) {
+      console.error(e)
+    })
+  }
+
+  update()
+})()
--- a/server.js
+++ b/server.js
@ -0,0 +1,41 @@
+const express = require('express')
+const cprog = require('child_process')
+const path = require('path')
+
+const app = express()
+const port = process.env.PORT || 8432
+
+/* Information segment */
+
+let info = {}
+let infoTimer
+
+async function requestInfo () {
+  return new Promise((resolve, reject) => {
+    let proc = cprog.exec('node ' + path.join(__dirname, 'system.js'), (err, stdout) => {
+      if (err) return reject(err)
+      resolve(JSON.parse(stdout))
+    })
+  })
+}
+
+function update () {
+  requestInfo().then((newInfo) => {
+    info = newInfo
+  }).catch(e => console.error(e))
+}
+
+infoTimer = setInterval(update, 8000)
+update()
+
+/* Web server segment */
+
+app.use('/status', function (req, res) {
+  res.jsonp(info)
+})
+
+app.use('/', express.static(path.join(__dirname, 'public')))
+
+app.listen(port, function (argument) {
+  console.log('Listening on', port)
+})
--- a/system.js
+++ b/system.js
@ -0,0 +1,86 @@
+const fs = require('fs')
+const util = require('util')
+const os = require('os')
+const osu = require('node-os-utils')
+
+let disks = ['/']
+
+// Get disks from environment variable
+let denv = process.env.SHOW_DISKS
+if (denv) {
+  try {
+    disks = JSON.parse(denv)
+  } catch (e) {
+    console.warn(e)
+  }
+}
+
+async function diskInfo () {
+  let result = {}
+  for (let i in disks) {
+    let info = await osu.drive.info(disks[i])
+    result[disks[i]] = info
+  }
+  return result
+}
+
+async function networkInfo () {
+  let interfaces = {}
+  let all = os.networkInterfaces()
+  for (let iface in all) {
+    let ips = all[iface]
+    interfaces[iface] = {
+      addresses: [],
+      upload: null,
+      download: null,
+    }
+    for (let i in ips) {
+      interfaces[iface].addresses.push(ips[i].address)
+    }
+  }
+
+  // Interface usage statistics
+  let data = await osu.netstat.stats()
+  for (let p in data) {
+    let ifa = data[p]
+    let dt = interfaces[ifa.interface]
+    if (!dt) continue
+    dt.upload = ifa.outputBytes
+    dt.download = ifa.inputBytes
+  }
+
+  return interfaces
+}
+
+async function cpuInfo () {
+  return {
+    usage: await osu.cpu.usage(),
+    loadAverage: os.loadavg(),
+    count: os.cpus().length,
+    processes: await osu.proc.totalProcesses()
+  }
+}
+
+async function memInfo () {
+  let free = os.freemem()
+  let total = os.totalmem()
+  return {
+    free: free,
+    total: total,
+    usage: (total - free) / total * 100
+  }
+}
+
+async function all () {
+  return {
+    hostname: os.hostname(),
+    kernel: os.release(),
+    uptime: os.uptime(),
+    cpu: await cpuInfo(),
+    memory: await memInfo(),
+    network: await networkInfo(),
+    disk: await diskInfo()
+  }
+}
+
+all().then((a) => console.log(JSON.stringify(a)))