index.html
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<!DOCTYPE html>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.1/Chart.bundle.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/1.4.5/socket.io.min.js"></script>
<style>
* {
font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
}
h1 {
font-size: 3em;
color: #222222;
margin: 0;
}
h5 {
margin: 0;
color: #888888;
}
p {
font-size: 0.7em;
color: #888888;
}
.stats-column {
flex: 0 0 200px;
}
.container {
display: flex;
flex-direction: row;
margin-top: 20px;
height: 100px;
}
.footer {
position: fixed;
margin: auto;
text-align: center;
left: 0;
right: 0;
bottom: 0;
}
.span-controls {
float: right;
}
canvas {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div style="width: 400px; margin: auto">
<div class="header">
<span><b>Express Status</b></span>
<div class="span-controls">
<span>1M</span>
<span>15M</span>
<span>1H</span>
<span>24H</span>
</div>
</div>
<div class="container">
<div class="stats-column">
<h5>CPU Usage</h5>
<h1 id="cpuStat">- %</h1>
</div>
<canvas id="cpuChart" width="400" height="100"></canvas>
</div>
<div class="container">
<div class="stats-column">
<h5>Memory Usage</h5>
<h1 id="memStat">- %</h1>
</div>
<canvas id="memChart" width="400" height="100"></canvas>
</div>
<div class="container">
<div class="stats-column">
<h5>One Minute Load Avg</h5>
<h1 id="loadStat">-</h1>
</div>
<canvas id="loadChart" width="400" height="100"></canvas>
</div>
<div class="container">
<div class="stats-column">
<h5>Response Time</h5>
<h1 id="responseTimeStat">-</h1>
</div>
<canvas id="responseTimeChart" width="400" height="100"></canvas>
</div>
<div class="container">
<div class="stats-column">
<h5>Requests per Second</h5>
<h1 id="rpsStat">-</h1>
</div>
<canvas id="rpsChart" width="400" height="100"></canvas>
</div>
<div class="footer">
<p>Made with ♥ with Socket.io & Chart.js</p>
</div>
</div>
<script>
Chart.defaults.global.defaultFontSize = 8;
Chart.defaults.global.animation.duration = 500;
Chart.defaults.global.legend.display = false;
Chart.defaults.global.elements.line.backgroundColor = "rgba(0,0,0,0)";
Chart.defaults.global.elements.line.borderColor = "rgba(0,0,0,0.9)";
Chart.defaults.global.elements.line.borderWidth = 2;
var socket = io('http://localhost:41338');
var labels = [];
var cpuDataset = [{
label: 'CPU Usage in %',
data: [],
lineTension: 0.3,
pointRadius: 0,
}];
var memDataset = [{
label: 'Memory Usage in MB',
data: [],
lineTension: 0.2,
pointRadius: 0,
}];
var loadDataset = [{
label: '1 Minute Load',
data: [],
lineTension: 0.2,
pointRadius: 0,
}];
var responseTimeDataset = [{
label: 'Response Time',
data: [],
lineTension: 0.2,
pointRadius: 0,
}];
var rpsDataset = [{
label: 'Requests per Second',
data: [],
lineTension: 0.2,
pointRadius: 0,
}];
var defaultOptions = {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}],
xAxes: [{
type: 'time',
time: {
unitStepSize: 30
},
gridLines: {
display: false
}
}]
},
tooltips: {
enabled: false
}
};
var cpuStat = document.getElementById('cpuStat');
var memStat = document.getElementById('memStat');
var loadStat = document.getElementById('loadStat');
var responseTimeStat = document.getElementById('responseTimeStat');
var rpsStat = document.getElementById('rpsStat');
var cpuChartCtx = document.getElementById("cpuChart");
var memChartCtx = document.getElementById("memChart");
var loadChartCtx = document.getElementById("loadChart");
var responseTimeChartCtx = document.getElementById("responseTimeChart");
var rpsChartCtx = document.getElementById("rpsChart");
var cpuChart = new Chart(cpuChartCtx, {
type: 'line',
data: {
labels: labels,
datasets: cpuDataset,
},
options: defaultOptions
});
var memChart = new Chart(memChartCtx, {
type: 'line',
data: {
labels: labels,
datasets: memDataset,
},
options: defaultOptions
});
var loadChart = new Chart(loadChartCtx, {
type: 'line',
data: {
labels: labels,
datasets: loadDataset,
},
options: defaultOptions
});
var responseTimeChart = new Chart(responseTimeChartCtx, {
type: 'line',
data: {
labels: labels,
datasets: responseTimeDataset,
},
options: defaultOptions
});
var rpsChart = new Chart(rpsChartCtx, {
type: 'line',
data: {
labels: labels,
datasets: rpsDataset,
},
options: defaultOptions
});
socket.on('start', function(data) {
// Remove last element of Array because it contains malformed responses data.
// To keep consistency we also remove os data.
data[0].responses.pop();
data[0].os.pop();
cpuStat.textContent = data[0].os[data[0].os.length - 1].cpu.toFixed(1) + '%';
cpuChart.data.datasets[0].data = data[0].os.map(function(point) { return point.cpu; });
cpuChart.data.labels = data[0].os.map(function(point) { return point.timestamp; });
cpuChart.update();
memStat.textContent = data[0].os[data[0].os.length - 1].memory.toFixed(1) + 'MB';
memChart.data.datasets[0].data = data[0].os.map(function(point) { return point.memory; });
memChart.data.labels = data[0].os.map(function(point) { return point.timestamp; });
memChart.update();
loadStat.textContent = data[0].os[data[0].os.length - 1].load[0].toFixed(2);
loadChart.data.datasets[0].data = data[0].os.map(function(point) { return point.load[0]; });
loadChart.data.labels = data[0].os.map(function(point) { return point.timestamp; });
loadChart.update();
responseTimeStat.textContent = data[0].responses[data[0].responses.length - 1].mean.toFixed(2) + 'ms';
responseTimeChart.data.datasets[0].data = data[0].responses.map(function(point) { return point.mean; });
responseTimeChart.data.labels = data[0].responses.map(function(point) { return point.timestamp; });
responseTimeChart.update();
if (data[0].responses.length >= 2) {
var deltaTime = data[0].responses[data[0].responses.length - 1].timestamp - data[0].responses[data[0].responses.length - 2].timestamp;
rpsStat.textContent = (data[0].responses[data[0].responses.length - 1].count / deltaTime * 1000).toFixed(2);
rpsChart.data.datasets[0].data = data[0].responses.map(function(point) { return point.count / deltaTime * 1000; });
rpsChart.data.labels = data[0].responses.map(function(point) { return point.timestamp; });
rpsChart.update();
}
});
socket.on('stats', function (data) {
cpuStat.textContent = data.os.cpu.toFixed(1) + '%';
cpuChart.data.datasets[0].data.push(data.os.cpu);
cpuChart.data.labels.push(data.os.timestamp);
cpuChart.data.datasets[0].data.shift();
cpuChart.data.labels.shift();
cpuChart.update();
memStat.textContent = data.os.memory.toFixed(1) + 'MB';
memChart.data.datasets[0].data.push(data.os.memory);
memChart.data.labels.push(data.os.timestamp);
memChart.data.datasets[0].data.shift();
memChart.data.labels.shift();
memChart.update();
loadStat.textContent = data.os.load[0].toFixed(2);
loadChart.data.datasets[0].data.push(data.os.load[0]);
loadChart.data.labels.push(data.os.timestamp);
loadChart.data.datasets[0].data.shift();
loadChart.data.labels.shift();
loadChart.update();
responseTimeStat.textContent = data.responses.mean.toFixed(2) + 'ms';
responseTimeChart.data.datasets[0].data.push(data.responses.mean);
responseTimeChart.data.labels.push(data.responses.timestamp);
responseTimeChart.data.datasets[0].data.shift();
responseTimeChart.data.labels.shift();
responseTimeChart.update();
var deltaTime = data.responses.timestamp - rpsChart.data.labels[rpsChart.data.labels.length - 1];
rpsStat.textContent = (data.responses.count / deltaTime * 1000).toFixed(2);
rpsChart.data.datasets[0].data.push(data.responses.count / deltaTime * 1000);
rpsChart.data.labels.push(data.responses.timestamp);
rpsChart.data.datasets[0].data.shift();
rpsChart.data.labels.shift();
rpsChart.update();
});
</script>
</body>
</html>