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lib/graph.ex
defmodule Blitzy.Graph do
def create_graph_data name do
results = Blitzy.Result.read_results
results = filter_out_step results,name
first = first_req results
results
|> create_graph_data(first)
end
def create_graph_data results, first do
results
|> Enum.map(fn x ->
case x do
{:ok, duration, _code, start, _} -> [start - first, duration,0]
{_, duration, _code, start, _} -> [start - first, 0, duration]
end
end)
|> Enum.map(fn x -> "[#{Enum.join(x,",")}]" end)
|> Enum.join(",")
end
def first_req results do
results |> Enum.map(fn {_, _time, _reason, start, _name} -> start end) |> Enum.min
end
def last_req results do
results |> Enum.map(fn {_, _time, _reason, start, _name} -> start end) |> Enum.max
end
def filter_out_step results, name do
Enum.filter(results, fn {_,_,_,_,step} -> step == name end)
end
def create_graph(data,scenario,name) do
{:ok, file} = File.open name, [:write]
IO.binwrite file, Blitzy.Graph.graph(data,scenario)
:ok = File.close file
end
def graph(data,name) do
data
|> script(name)
|> html
end
def html(script) do
"""
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
#{script}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px"></div>
</body>
</html>
"""
end
def script(data,name) do
"""
google.charts.load('current', {packages: ['corechart', 'line']});
google.charts.setOnLoadCallback(drawCrosshairs);
function drawCrosshairs() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'start');
data.addColumn('number', 'ok-#{name}');
data.addColumn('number', 'error-#{name}');
data.addRows([
#{data}
]);
var options = {
hAxis: {
title: 'time/[milliseconds]'
},
vAxis: {
title: 'duration/[milliseconds]'
},
colors: ['#097138', '#a52714'],
crosshair: {
color: '#000',
trigger: 'selection'
}
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
chart.setSelection([{row: 38, column: 1}]);
}
"""
end
end