239 lines
11 KiB
HTML
239 lines
11 KiB
HTML
<!doctype html>
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<html lang="ru">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Статус · {{.Agent.Name}} - LPRA</title>
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<link rel="stylesheet" href="/static/app.css">
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<style>
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.meters { display:grid; grid-template-columns:repeat(auto-fit, minmax(240px, 1fr)); gap:20px; margin-bottom:20px; }
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.meters .card { margin:0; }
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.meter .head { display:flex; align-items:baseline; justify-content:space-between; }
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.meter .name { color:var(--muted); font-size:13px; }
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.meter .val { font-size:26px; font-weight:600; font-variant-numeric:tabular-nums; }
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.meter .sub { color:var(--muted); font-size:13px; margin-top:8px; min-height:20px; font-variant-numeric:tabular-nums; }
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.bar { height:8px; border-radius:4px; background:#0c0f13; border:1px solid var(--border); overflow:hidden; margin-top:10px; }
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.bar i { display:block; height:100%; width:100%; background:var(--accent); transform-origin:left; transform:scaleX(0); transition:transform .4s; }
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.bar i.warn { background:#e6a23c; }
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.bar i.crit { background:var(--danger); }
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.speed { display:flex; gap:28px; flex-wrap:wrap; margin-top:16px; }
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.speed b { display:block; font-size:20px; font-variant-numeric:tabular-nums; }
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.speed span { color:var(--muted); font-size:13px; }
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label.check { display:inline-flex; align-items:center; gap:8px; margin:0; color:var(--text); font-size:14px; cursor:pointer; }
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</style>
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</head>
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<body>
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<header class="topbar">
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<div class="brand">LPRA · Статус - {{.Agent.Name}} <span class="muted">({{.Agent.Hostname}})</span></div>
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<nav>
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<a href="/">← Машины</a>
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<a href="/agents/{{.Agent.ID}}/terminal">Терминал</a>
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<a href="/agents/{{.Agent.ID}}/files">Файлы</a>
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<a href="/agents/{{.Agent.ID}}/forwards">Порты</a>
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<a href="/agents/{{.Agent.ID}}/edit">Изменить</a>
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</nav>
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</header>
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<div class="wrap">
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<h1>Статус</h1>
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<div class="err" id="err" hidden></div>
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<div class="meters">
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<div class="card meter">
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<div class="head"><span class="name">Процессор</span><span class="val" id="cpu-val">-</span></div>
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<div class="bar"><i id="cpu-bar"></i></div>
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<div class="sub" id="cpu-sub"></div>
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</div>
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<div class="card meter">
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<div class="head"><span class="name">Оперативная память</span><span class="val" id="mem-val">-</span></div>
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<div class="bar"><i id="mem-bar"></i></div>
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<div class="sub" id="mem-sub"></div>
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</div>
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<div class="card meter">
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<div class="head"><span class="name">Диск (/)</span><span class="val" id="disk-val">-</span></div>
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<div class="bar"><i id="disk-bar"></i></div>
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<div class="sub" id="disk-sub"></div>
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</div>
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</div>
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<div class="card">
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<h2>Скорость соединения</h2>
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<p class="muted">Клиент замеряет свой канал до хоста панели - тот же, по которому идут терминал, файлы и http-проброс.
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С галочкой «До браузера» данные идут дальше, через панель до этого браузера и обратно: так виден весь путь клиент - панель - браузер.
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Замер занимает около 7 секунд и на это время нагружает канал.</p>
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<div class="row">
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<button id="speed-btn" type="button">Замерить скорость</button>
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<label class="check" title="Данные пойдут не только между клиентом и хостом панели, а через панель до этого браузера и обратно">
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<input type="checkbox" id="speed-relay"> До браузера
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</label>
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<span class="muted" id="speed-note"></span>
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</div>
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<div class="speed" id="speed" hidden>
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<div><b id="sp-ping"></b><span>задержка</span></div>
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<div><b id="sp-down"></b><span id="sp-down-lbl"></span></div>
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<div><b id="sp-up"></b><span id="sp-up-lbl"></span></div>
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</div>
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</div>
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</div>
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<script>
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(function () {
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var base = '/api/panel/agents/' + encodeURIComponent({{.Agent.ID}});
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var $ = function (id) { return document.getElementById(id); };
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var errBox = $('err');
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function size(n) {
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var u = ['Б', 'КБ', 'МБ', 'ГБ', 'ТБ'], i = 0;
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while (n >= 1024 && i < u.length - 1) { n /= 1024; i++; }
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return n.toFixed(n < 10 && i > 0 ? 1 : 0) + ' ' + u[i];
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}
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function rate(bps) {
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var u = ['бит/с', 'Кбит/с', 'Мбит/с', 'Гбит/с'], i = 0;
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while (bps >= 1000 && i < u.length - 1) { bps /= 1000; i++; }
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return bps.toFixed(bps < 100 && i > 0 ? 1 : 0) + ' ' + u[i];
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}
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function meter(name, pct, sub) {
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pct = Math.max(0, Math.min(100, pct));
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$(name + '-val').textContent = Math.round(pct) + '%';
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var bar = $(name + '-bar');
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bar.style.transform = 'scaleX(' + pct / 100 + ')';
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bar.className = pct >= 90 ? 'crit' : pct >= 75 ? 'warn' : '';
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$(name + '-sub').textContent = sub;
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}
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function showErr(msg) {
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errBox.textContent = msg || '';
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errBox.hidden = !msg;
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}
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function cores(n) {
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var d = n % 10, h = n % 100;
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return n + (d === 1 && h !== 11 ? ' ядро' : d >= 2 && d <= 4 && (h < 12 || h > 14) ? ' ядра' : ' ядер');
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}
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// One request at a time, and none while the tab is hidden: the client is
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// sampled only for a page somebody is looking at.
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var timer = null, busy = false;
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function schedule(ms) {
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clearTimeout(timer);
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if (!document.hidden) timer = setTimeout(load, ms);
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}
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function load() {
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if (busy || document.hidden) return;
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busy = true;
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var next = 3000;
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fetch(base + '/stat', {credentials: 'same-origin'})
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.then(function (r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.json(); })
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.then(function (res) {
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if (!res.ok) { showErr(res.error || 'ошибка'); next = 10000; return; }
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showErr('');
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var d = res.data;
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meter('cpu', d.cpu, cores(d.ncpu));
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meter('mem', d.mem_total ? 100 * d.mem_used / d.mem_total : 0,
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'занято ' + size(d.mem_used) + ' из ' + size(d.mem_total) + ' · свободно ' + size(d.mem_total - d.mem_used));
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meter('disk', d.disk_total ? 100 * (d.disk_total - d.disk_free) / d.disk_total : 0,
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'свободно ' + size(d.disk_free) + ' из ' + size(d.disk_total));
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})
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.catch(function (e) { showErr('Нет связи с панелью: ' + e.message); next = 10000; })
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.then(function () { busy = false; schedule(next); });
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}
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document.addEventListener('visibilitychange', function () {
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if (document.hidden) clearTimeout(timer); else load();
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});
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load();
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var btn = $('speed-btn'), note = $('speed-note');
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function json(r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.json(); }
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function post(path) { return fetch(base + path, {method: 'POST', credentials: 'same-origin'}).then(json); }
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// The browser's round trip to the panel: the first request may pay for a
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// new connection, so keep the best.
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function panelPing() {
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var best = Infinity, left = 4;
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function one() {
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var t = performance.now();
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return fetch('/api/panel/ping', {credentials: 'same-origin', cache: 'no-store'})
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.then(function (r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.arrayBuffer(); })
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.then(function () {
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best = Math.min(best, performance.now() - t);
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return --left > 0 ? one() : best;
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});
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}
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return one();
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}
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// Keeps the client's download fed until stopped or the panel says the
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// client has read enough; the pieces grow while they go through quickly.
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function feed(stop) {
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var block = new Uint8Array(65536), n = 4;
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crypto.getRandomValues(block);
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function one() {
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var parts = [], t = performance.now();
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for (var i = 0; i < n; i++) parts.push(block);
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return fetch(base + '/speed/down', {method: 'POST', body: new Blob(parts), credentials: 'same-origin', signal: stop.signal})
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.then(function (r) {
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if (!r.ok) return;
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if (performance.now() - t < 500 && n < 256) n *= 2;
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return one();
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});
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}
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one().catch(function () {});
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}
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// Times what the client sends, from its first byte to the end of the stream.
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function drain(onFirst) {
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return fetch(base + '/speed/up', {credentials: 'same-origin', cache: 'no-store'}).then(function (r) {
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if (!r.ok) throw new Error('HTTP ' + r.status);
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var rd = r.body.getReader(), n = 0, start = 0;
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function pump() {
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return rd.read().then(function (c) {
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if (c.done) return start && n ? n * 8000 / Math.max(1, performance.now() - start) : 0;
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if (!start) { start = performance.now(); onFirst(); }
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n += c.value.length;
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return pump();
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});
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}
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return pump();
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});
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}
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// The test through the browser: the client's download is what this page
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// uploads, and its upload is timed here, where it arrives.
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function relayTest() {
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return panelPing().then(function (ping) {
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return post('/speed/relay').then(function (res) {
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if (!res.ok) return res;
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var stop = new AbortController();
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var up = drain(function () { stop.abort(); });
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up.catch(function () {});
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feed(stop);
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return post('/speed?relay=1').then(function (res) {
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stop.abort();
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if (!res.ok) return res;
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return up.then(function (bps) {
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res.data.ping_ms += ping;
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res.data.up_bps = bps;
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return res;
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});
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}, function (e) { stop.abort(); throw e; });
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});
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});
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}
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btn.onclick = function () {
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var relay = $('speed-relay').checked;
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btn.disabled = true;
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note.textContent = 'Идёт замер…';
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(relay ? relayTest() : post('/speed'))
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.then(function (res) {
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if (!res.ok) { note.textContent = res.error || 'ошибка'; return; }
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var d = res.data;
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$('sp-ping').textContent = d.ping_ms.toFixed(d.ping_ms < 10 ? 1 : 0) + ' мс';
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$('sp-down').textContent = rate(d.down_bps);
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$('sp-up').textContent = rate(d.up_bps);
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$('sp-down-lbl').textContent = relay ? 'браузер → клиент' : 'хост → клиент';
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$('sp-up-lbl').textContent = relay ? 'клиент → браузер' : 'клиент → хост';
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$('speed').hidden = false;
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note.textContent = '';
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})
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.catch(function (e) { note.textContent = 'Не удалось: ' + e.message; })
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.then(function () { btn.disabled = false; });
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};
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})();
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</script>
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</body>
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</html>
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