func vegetaAttack(targeter vegeta.Targeter, rate uint64, metricsChan chan *vegeta.Metrics) {
attacker := vegeta.NewAttacker()
var results vegeta.Results
for res := range attacker.Attack(targeter, rate, 10*time.Second) {
results = append(results, res)
}
metrics := vegeta.NewMetrics(results)
metricsChan <- metrics
}
func main() {
rps := flag.Uint64("r", 100, "rate: request per second")
duration := flag.Int64("t", 5, "duration in seconds")
flag.Parse()
args := flag.Args()
if len(args) == 0 {
fmt.Println("goab [options] url")
flag.Usage()
return
}
cmd := "GET " + args[len(args)-1]
fmt.Printf("Latency for [%s]\n%s\n", cmd, strings.Repeat("-", 40))
targets, _ := vegeta.NewTargets([]string{cmd})
results := vegeta.Attack(targets, *rps, time.Second*time.Duration(*duration))
metrics := vegeta.NewMetrics(results)
fmt.Printf("%8s: %15s\n", "mean", metrics.Latencies.Mean)
fmt.Printf("%8s: %15s\n", "max", metrics.Latencies.Max)
fmt.Printf("%8s: %15s\n", "95%", metrics.Latencies.P95)
fmt.Printf("%8s: %15s\n", "99%", metrics.Latencies.P99)
}
