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monitor.html
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monitor.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Kelp Monitor</title>
</head>
<body>
<h1>CPU</h1>
<div id="cpu"></div>
<h1>Memory</h1>
<div id="memory"></div>
<link href="https://cdnjs.cloudflare.com/ajax/libs/c3/0.4.17/c3.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/c3/0.4.17/c3.min.js"></script>
</body>
<script>
var chartCPU, chartMemory;
function refreshCPU(columns) {
if (chartCPU) {
chartCPU.flow({ columns, length: 0 });
} else {
chartCPU = c3.generate({
type: 'line',
bindto: '#cpu',
data: { columns },
point: { show: false },
axis: {
x: { show: false },
y: { tick: { format: d3.format('0,000') } }
},
});
}
}
function refreshMemory(columns) {
if (chartMemory) {
chartMemory.flow({ columns, length: 0 });
} else {
chartMemory = c3.generate({
type: 'line',
bindto: '#memory',
data: { columns },
point: { show: false },
axis: {
x: { show: false },
y: { tick: { format: d3.format('0,000') } }
},
});
}
}
var es = new EventSource('/usage');
es.onerror = function (e) {
var el = document.getElementById('memory');
el.innerHTML = '<code></code>';
};
es.onmessage = function (e) {
const { cpu, memory } = JSON.parse(e.data);
refreshCPU(Object.keys(cpu).map(key => {
return [key, cpu[key]];
}));
refreshMemory(Object.keys(memory).map(key => {
return [key, memory[key]];
}));
};
</script>
</html>