func writeResults(results vegeta.Results, output string) error {
out, err := file(output, true)
if err != nil {
return fmt.Errorf(errOutputFilePrefix+"(%s): %s", output, err)
}
defer out.Close()
log.Printf("Writing results to '%s'...", output)
if err := results.Encode(out); err != nil {
return err
}
return nil
}
// report validates the report arguments, sets up the required resources
// and writes the report
func report(reporter, input, output string) error {
var rep vegeta.Reporter
switch reporter {
case "text":
rep = vegeta.ReportText
case "json":
rep = vegeta.ReportJSON
case "plot":
rep = vegeta.ReportPlot
case "csv":
rep = vegeta.ReportCSV
default:
log.Println("Reporter provided is not supported. Using text")
rep = vegeta.ReportText
}
all := vegeta.Results{}
for _, input := range strings.Split(input, ",") {
in, err := file(input, false)
if err != nil {
return err
}
defer in.Close()
results := vegeta.Results{}
if err := results.Decode(in); err != nil {
return err
} else {
log.Printf("Number of results: %d", len(results))
}
all = append(all, results...)
}
all.Sort()
out, err := file(output, true)
if err != nil {
return err
}
defer out.Close()
if data, err := rep(all); err != nil {
return err
} else if _, err := out.Write(data); err != nil {
return err
}
return nil
}