protected String buildGraph(String seriesDirectory, Method<?, ?> method, List<Double> datas) {
XYSeries series = new XYSeries("XYGraph", false, false);
double snapshot = 0;
for (Double data : datas) {
double seconds = TimeUnit.NANOSECONDS.toSeconds(data.intValue());
series.add(snapshot++, seconds);
}
XYSeriesCollection seriesCollection = new XYSeriesCollection();
seriesCollection.addSeries(series);
JFreeChart chart =
ChartFactory.createXYLineChart(
null,
"Snapshots",
"Time",
seriesCollection,
PlotOrientation.VERTICAL,
false,
false,
false);
chart.setTitle(new TextTitle(method.getName(), new Font("Arial", Font.BOLD, 11)));
XYPlot xyPlot = chart.getXYPlot();
NumberAxis yAxis = (NumberAxis) xyPlot.getRangeAxis();
yAxis.setAutoRange(true);
yAxis.setAutoRangeIncludesZero(true);
NumberAxis xAxis = (NumberAxis) xyPlot.getDomainAxis();
xAxis.setAutoRange(true);
xAxis.setAutoRangeIncludesZero(true);
// xAxis.setTickUnit(new NumberTickUnit(1));
StringBuilder builder = new StringBuilder(method.getClassName());
builder.append(method.getName());
builder.append(method.getDescription());
String fileName = Long.toString(Toolkit.hash(builder.toString()));
fileName += ".jpeg";
File chartSeriesDirectory = new File(IConstants.chartDirectory, seriesDirectory);
File chartFile = new File(chartSeriesDirectory, fileName);
try {
if (!IConstants.chartDirectory.exists()) {
//noinspection ResultOfMethodCallIgnored
IConstants.chartDirectory.mkdirs();
}
if (!chartSeriesDirectory.exists()) {
//noinspection ResultOfMethodCallIgnored
chartSeriesDirectory.mkdirs();
}
if (!chartFile.exists()) {
//noinspection ResultOfMethodCallIgnored
chartFile.createNewFile();
}
ChartUtilities.saveChartAsJPEG(chartFile, chart, 450, 150);
builder = new StringBuilder(IConstants.CHARTS);
builder.append(File.separatorChar);
builder.append(seriesDirectory);
builder.append(File.separatorChar);
builder.append(fileName);
return builder.toString();
} catch (Exception e) {
logger.error("Exception generating the graph", e);
}
return null;
}
