89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
package vegeta
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import (
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"bytes"
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"code.google.com/p/plotinum/plot"
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"code.google.com/p/plotinum/plotter"
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"code.google.com/p/plotinum/plotutil"
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"code.google.com/p/plotinum/vg"
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"code.google.com/p/plotinum/vg/vgsvg"
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"encoding/json"
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"fmt"
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"text/tabwriter"
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)
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// Reporter represents any function which takes a slice of Results and
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// generates a report returned as a slice of bytes and an error in case
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// of failure
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type Reporter func([]Result) ([]byte, error)
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// ReportText returns a computed Metrics struct as aligned, formatted text
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func ReportText(results []Result) ([]byte, error) {
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m := NewMetrics(results)
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out := &bytes.Buffer{}
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w := tabwriter.NewWriter(out, 0, 8, 2, '\t', tabwriter.StripEscape)
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fmt.Fprintf(w, "Time(avg)\tRequests\tSuccess\tBytes(rx/tx)\n")
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fmt.Fprintf(w, "%s\t%d\t%.2f%%\t%.2f/%.2f\n", m.MeanTiming, m.TotalRequests, m.MeanSuccess*100, m.MeanBytesIn, m.MeanBytesOut)
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fmt.Fprintf(w, "\nCount:\t")
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for _, count := range m.StatusCodes {
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fmt.Fprintf(w, "%d\t", count)
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}
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fmt.Fprintf(w, "\nStatus:\t")
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for code := range m.StatusCodes {
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fmt.Fprintf(w, "%s\t", code)
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}
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fmt.Fprintln(w, "\n\nError Set:")
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for _, err := range m.Errors {
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fmt.Fprintln(w, err)
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}
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if err := w.Flush(); err != nil {
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return []byte{}, err
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}
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return out.Bytes(), nil
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}
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// ReportJSON writes a computed Metrics struct to as JSON
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func ReportJSON(results []Result) ([]byte, error) {
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return json.Marshal(NewMetrics(results))
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}
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// ReportTimingsPlot builds up a plot of the response times of the requests
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// in SVG format and returns it
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func ReportTimingsPlot(results []Result) ([]byte, error) {
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p, err := plot.New()
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if err != nil {
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return []byte{}, err
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}
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pts := make(plotter.XYs, len(results))
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for i := 0; i < len(pts); i++ {
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pts[i].X = results[i].Timestamp.Sub(results[0].Timestamp).Seconds()
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pts[i].Y = results[i].Timing.Seconds() * 1000
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}
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line, err := plotter.NewLine(pts)
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if err != nil {
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return []byte{}, err
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}
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line.Color = plotutil.Color(1)
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p.Add(line)
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p.X.Padding = vg.Length(3.0)
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p.X.Label.Text = "Time elapsed"
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p.Y.Padding = vg.Length(3.0)
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p.Y.Label.Text = "Latency (ms)"
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w, h := vg.Millimeters(float64(len(results))), vg.Centimeters(12.0)
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canvas := vgsvg.New(w, h)
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p.Draw(plot.MakeDrawArea(canvas))
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out := &bytes.Buffer{}
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if _, err = canvas.WriteTo(out); err != nil {
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return []byte{}, err
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}
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return out.Bytes(), nil
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}
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