From c22caed44619cc92e1604b85d9e726953a76b7e5 Mon Sep 17 00:00:00 2001 From: Evert Prants Date: Fri, 1 Mar 2019 21:44:08 +0200 Subject: [PATCH] Initial commit --- .gitignore | 1 + package-lock.json | 363 ++++++++++++++++++++++++++++++++++++++++++ package.json | 16 ++ public/dark-theme.css | 20 +++ public/index.css | 87 ++++++++++ public/index.html | 16 ++ public/index.js | 203 +++++++++++++++++++++++ server.js | 41 +++++ system.js | 86 ++++++++++ 9 files changed, 833 insertions(+) create mode 100644 .gitignore create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 public/dark-theme.css create mode 100644 public/index.css create mode 100644 public/index.html create mode 100644 public/index.js create mode 100644 server.js create mode 100644 system.js diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c2658d7 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +node_modules/ diff --git a/package-lock.json b/package-lock.json new file mode 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.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; +} diff --git a/public/index.css b/public/index.css new file mode 100644 index 0000000..b188b52 --- /dev/null +++ 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%; + } +} diff --git a/public/index.html b/public/index.html new file mode 100644 index 0000000..6b8b99c --- /dev/null +++ b/public/index.html @@ -0,0 +1,16 @@ + + + + + + + + Please Wait.. + + +
+

Gathering the latest information, please wait..

+
+ + + diff --git a/public/index.js b/public/index.js new file mode 100644 index 0000000..894ca48 --- /dev/null +++ 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', + '
' + ) + + 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() +})() diff --git a/server.js b/server.js new file mode 100644 index 0000000..4303d77 --- /dev/null +++ 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) +}) diff --git a/system.js b/system.js new file mode 100644 index 0000000..69aedf4 --- /dev/null +++ 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)))