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index.html
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<!DOCTYPE html>
<html>
<head>
<title>HDFS Visualizer</title>
<link rel="stylesheet" href="/bower_components/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="/bower_components/bootstrap/dist/css/bootstrap-theme.min.css" />
<link rel="stylesheet" href="/css/hdfs.css" />
<script src="/bower_components/chartjs/Chart.js"></script>
<script src="/bower_components/jquery/dist/jquery.min.js"></script>
<script src="/bower_components/pleasejs/src/Please.js"></script>
<script src="/bower_components/multilevelpiechart/MultiLevelPieChart.js"></script>
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div class="container-fluid">
<div class="panel panel-default cluster-configuration">
<div class="panel-heading">
<h3 class="panel-title">HDFS Cluster Configuration</h3>
</div>
<div class="panel-body">
<form id="renderForm">
<div class="form-group">
<label class="control-label">Namenode HTTP Address</label>
<input type="text" name="hdfs_namenode" class="form-control" placeholder="localhost:50070" />
<span class="help-block hidden"></span>
</div>
<div class="form-group">
<label class="control-label">Folder path</label>
<input type="text" name="hdfs_path" class="form-control" placeholder="/path/to/files" />
<span class="help-block hidden"></span>
</div>
<div class="form-group" style="margin-bottom: 0;">
<button class="btn btn-sm btn-default" id="submit_button" type="submit">Render</button>
<span class="help"> <small id="counter"></small></span>
</div>
</form>
</div>
</div>
<div class="chart">
<center><canvas id="demo" width="800" height="700"></canvas></center>
</div>
</div>
<script>
function bytesToSize(bytes) {
var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
if (bytes == 0) return '0 Byte';
var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
};
(function(){
var canvas = document.getElementById('demo'),
ctx = canvas.getContext('2d'),
counterLabel = document.getElementById('counter'),
counter = 0,
button = document.getElementById('submit_button')
// Spawn the web worker ready to start generating file trees
var hdfsWorker = new Worker("/js/worker.js");
// Bind a handler so we know when data is available
hdfsWorker.onmessage = function(event){
if (!event.data.success) {
alert("Worker error!");
return;
}
if (event.data.message == "tree"){
var data = event.data,
root = data.tree;
var assignColor = function(node){
var childLength = (node.children) ? node.children.length : 0;
var base_color = node.color;
if (base_color) {
var scheme = Please.make_scheme(Please.HEX_to_HSV(base_color), {
count: childLength,
scheme_type: 'analogous'
});
$.each(node.children, function(index, child){
child.color = scheme[index];
assignColor(child);
});
}
};
root.color = Please.make_color()[0];
$.each(root.children, function(_, child) {
child.color = Please.make_color()[0];
assignColor(child);
})
window.chart = new Chart(ctx).MultiLevelPie([root], {
animation: true,
segmentWidth: 25,
segmentHighlight: null,
tooltipTemplate: function(c) {
return bytesToSize(c.value) + ' (' + c.label + ')';
},
responsive: false
});
canvas.onclick = function(evt){
var element = window.chart.getSegmentsAtEvent(evt);
if (element) {
alert(element[0].label);
}
}
counterLabel.innerHTML = "";
counter = 0;
} else if (event.data.message == "path"){
var path = event.data.path,
rev = path.split("").reverse().join("");
if (rev.length > 140) {
rev = rev.substr(0, 140);
path = "..." + rev.split("").reverse().join("");
}
counter++;
counterLabel.innerHTML = counter + " paths processed (" + path + ")";
}
};
$("#renderForm").submit(function (e){
e.preventDefault();
if (window.chart) {
window.chart.destroy();
}
var formData = {};
$(this).serializeArray().map(function(x){
formData[x.name] = x.value;
});
hdfsWorker.postMessage(formData);
});
}).call(this);
</script>
</body>
</html>