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<!DOCTYPE html> |
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<html lang="en"> |
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<head> |
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<meta charset="utf-8"> |
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<title>Linux Process Tree</title> |
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<style> |
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div.tooltip { |
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position: absolute; |
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text-align: left; |
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width: 180px; |
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height: 80px; |
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padding: 2px; |
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font: 12px sans-serif; |
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background: lightsteelblue; |
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border: 0px; |
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border-radius: 8px; |
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pointer-events: none; |
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} |
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.node circle { |
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fill: #fff; |
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stroke: steelblue; |
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stroke-width: 3px; |
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} |
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.node text { font: 12px sans-serif; } |
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.link { |
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fill: none; |
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stroke: #ccc; |
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stroke-width: 2px; |
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} |
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</style> |
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</head> |
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<body> |
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<!-- load the d3.js library --> |
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<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script> |
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<script> |
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// ************** Generate the tree diagram ***************** |
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var margin = {top: 20, right: 120, bottom: 20, left: 120}, |
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width = 1200 - margin.right - margin.left, |
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height = 900 - margin.top - margin.bottom; |
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var i = 0; |
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duration = 750; |
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var tree = d3.layout.tree() |
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.size([height, width]); |
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var diagonal = d3.svg.diagonal() |
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.projection(function(d) { return [d.y, d.x]; }); |
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var svg = d3.select("body").append("svg") |
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.attr("width", width + margin.right + margin.left) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + |
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margin.top + ")"); |
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// load the external data |
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d3.csv("ps.csv", function(error, data) { |
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// *********** Convert flat data into a nice tree *************** |
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// create a name: node map |
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var dataMap = data.reduce(function(map, node) { |
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map[node.name] = node; |
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return map; |
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}, {}); |
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// create the tree array |
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var treeData = []; |
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data.forEach(function(node) { |
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// add to parent |
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var parent = dataMap[node.parent]; |
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if (parent) { |
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// create child array if it doesn't exist |
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(parent.children || (parent.children = [])) |
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// add node to child array |
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.push(node); |
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} else { |
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// parent is null or missing |
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treeData.push(node); |
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} |
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}); |
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root = treeData[0]; |
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root.x0 = height / 2; |
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root.y0 = 0; |
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update(root); |
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}); |
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d3.select(self.frameElement).style("height", "500px"); |
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function update(source) { |
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// Compute the new tree layout. |
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var nodes = tree.nodes(root).reverse(), |
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links = tree.links(nodes); |
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// Normalize for fixed-depth. |
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nodes.forEach(function(d) { d.y = d.depth * 180; }); |
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// Update the nodes… |
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var node = svg.selectAll("g.node") |
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.data(nodes, function(d) { return d.id || (d.id = ++i); }); |
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// Enter any new nodes at the parent's previous position. |
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var nodeEnter = node.enter().append("g") |
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.attr("class", "node") |
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.attr("transform", function(d) { |
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return "translate(" + source.y0 + "," + source.x0 + ")"; }) |
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.on("click", click) |
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// add tool tip for ps -eo pid,ppid,pcpu,size,comm,ruser,s |
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.on("mouseover", function(d) { |
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div.transition() |
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.duration(200) |
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.style("opacity", .9); |
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div .html( |
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"PID: " + d.name + "<br/>" + |
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"Command: " + d.COMMAND + "<br/>" + |
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"User: " + d.RUSER + "<br/>" + |
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"%CPU: " + d.CPU + "<br/>" + |
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"Memory: " + d.SIZE |
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) |
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.style("left", (d3.event.pageX) + "px") |
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.style("top", (d3.event.pageY - 28) + "px"); |
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}) |
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.on("mouseout", function(d) { |
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div.transition() |
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.duration(500) |
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.style("opacity", 0); |
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}); |
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nodeEnter.append("circle") |
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.attr("r", 1e-6) |
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.style("fill", function(d) { |
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return d._children ? "lightsteelblue" : "#fff"; }); |
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nodeEnter.append("text") |
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.attr("x", function(d) { |
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return d.children || d._children ? -13 : 13; }) |
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.attr("dy", ".35em") |
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.attr("text-anchor", function(d) { |
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return d.children || d._children ? "end" : "start"; }) |
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.text(function(d) { return d.COMMAND; }) |
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.style("fill-opacity", 1e-6); |
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// add the tool tip |
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var div = d3.select("body").append("div") |
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.attr("class", "tooltip") |
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.style("opacity", 0); |
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// Transition nodes to their new position. |
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var nodeUpdate = node.transition() |
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.duration(duration) |
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.attr("transform", function(d) { |
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return "translate(" + d.y + "," + d.x + ")"; |
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}); |
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nodeUpdate.select("circle") |
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.attr("r", 10) |
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.style("fill", function(d) { |
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return d._children ? "lightsteelblue" : "#fff"; }); |
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nodeUpdate.select("text") |
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.style("fill-opacity", 1); |
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// Transition exiting nodes to the parent's new position. |
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var nodeExit = node.exit().transition() |
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.duration(duration) |
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.attr("transform", function(d) { return "translate(" + source.y + |
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"," + source.x + ")"; }) |
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.remove(); |
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nodeExit.select("circle") |
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.attr("r", 1e-6); |
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nodeExit.select("text") |
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.style("fill-opacity", 1e-6); |
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// Update the links… |
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var link = svg.selectAll("path.link") |
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.data(links, function(d) { return d.target.id; }); |
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// Enter any new links at the parent's previous position. |
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link.enter().insert("path", "g") |
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.attr("class", "link") |
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.attr("d", function(d) { |
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var o = {x: source.x0, y: source.y0}; |
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return diagonal({source: o, target: o}); |
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}); |
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// Transition links to their new position. |
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link.transition() |
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.duration(duration) |
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.attr("d", diagonal); |
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// Transition exiting nodes to the parent's new position. |
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link.exit().transition() |
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.duration(duration) |
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.attr("d", function(d) { |
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var o = {x: source.x, y: source.y}; |
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return diagonal({source: o, target: o}); |
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}) |
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.remove(); |
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// Stash the old positions for transition. |
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nodes.forEach(function(d) { |
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d.x0 = d.x; |
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d.y0 = d.y; |
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}); |
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} |
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// Toggle children on click. |
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function click(d) { |
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if (d.children) { |
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d._children = d.children; |
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d.children = null; |
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} else { |
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d.children = d._children; |
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d._children = null; |
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} |
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update(d); |
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} |
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</script> |
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</body> |
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</html> |
