func main() {
flag.Parse()
var serviceIP string
ips, err := net.LookupIP(*host)
if err != nil {
fmt.Printf("Error looking up %s: %v\n", *host, err)
os.Exit(2)
}
for _, ip := range ips {
ipv4 := ip.To4()
if ipv4 != nil {
serviceIP = ipv4.String()
break
}
}
if len(serviceIP) == 0 {
fmt.Printf("Failed to find suitable IP address: %v", ips)
os.Exit(2)
}
host := serviceIP
if *port != 80 {
host = fmt.Sprintf("%s:%d", host, port)
}
var targets []vegeta.Target
for _, path := range strings.Split(*paths, ",") {
path = strings.TrimPrefix(path, "/")
targets = append(targets, vegeta.Target{
Method: "GET",
URL: fmt.Sprintf("http://%s/%s", host, path),
})
}
targeter := vegeta.NewStaticTargeter(targets...)
attacker := vegeta.NewAttacker(vegeta.Workers(uint64(*workers)))
reporter := &HTTPReporter{}
go http.ListenAndServe(*addr, reporter)
for {
metrics := &vegeta.Metrics{}
for res := range attacker.Attack(targeter, uint64(*rate), *duration) {
metrics.Add(res)
}
metrics.Close()
reporter.SetMetrics(metrics)
}
}
func main() {
flag.Parse()
var serviceIP string
ips, err := net.LookupIP(*host)
if err != nil {
fmt.Printf("Error looking up %s: %v\n", *host, err)
os.Exit(2)
}
for _, ip := range ips {
ipv4 := ip.To4()
if ipv4 != nil {
serviceIP = ipv4.String()
break
}
}
if len(serviceIP) == 0 {
fmt.Printf("Failed to find suitable IP address: %v", ips)
os.Exit(2)
}
targeter := vegeta.NewStaticTargeter(vegeta.Target{
Method: "GET",
URL: "http://" + serviceIP + "/",
})
attacker := vegeta.NewAttacker(vegeta.Workers(uint64(*workers)))
reporter := &HTTPReporter{}
go http.ListenAndServe(*addr, reporter)
for {
metrics := &vegeta.Metrics{}
for res := range attacker.Attack(targeter, uint64(*rate), *duration) {
metrics.Add(res)
}
metrics.Close()
reporter.SetMetrics(metrics)
}
}
// attack validates the attack arguments, sets up the
// required resources, launches the attack and writes the results
func attack(opts *attackOpts) (err error) {
if opts.rate == 0 {
return errZeroRate
}
if opts.duration == 0 {
return errZeroDuration
}
files := map[string]io.Reader{}
for _, filename := range []string{opts.targetsf, opts.bodyf, opts.certf} {
if filename == "" {
continue
}
f, err := file(filename, false)
if err != nil {
return fmt.Errorf("error opening %s: %s", filename, err)
}
defer f.Close()
files[filename] = f
}
var body []byte
if bodyf, ok := files[opts.bodyf]; ok {
if body, err = ioutil.ReadAll(bodyf); err != nil {
return fmt.Errorf("error reading %s: %s", opts.bodyf, err)
}
}
var (
tr vegeta.Targeter
src = files[opts.targetsf]
hdr = opts.headers.Header
)
if opts.lazy {
tr = vegeta.NewLazyTargeter(src, body, hdr)
} else if tr, err = vegeta.NewEagerTargeter(src, body, hdr); err != nil {
return err
}
out, err := file(opts.outputf, true)
if err != nil {
return fmt.Errorf("error opening %s: %s", opts.outputf, err)
}
defer out.Close()
var cert []byte
if certf, ok := files[opts.certf]; ok {
if cert, err = ioutil.ReadAll(certf); err != nil {
return fmt.Errorf("error reading %s: %s", opts.certf, err)
}
}
tlsc := *vegeta.DefaultTLSConfig
if opts.certf != "" {
if tlsc.RootCAs, err = certPool(cert); err != nil {
return err
}
}
atk := vegeta.NewAttacker(
vegeta.Redirects(opts.redirects),
vegeta.Timeout(opts.timeout),
vegeta.LocalAddr(*opts.laddr.IPAddr),
vegeta.TLSConfig(&tlsc),
vegeta.Workers(opts.workers),
vegeta.KeepAlive(opts.keepalive),
vegeta.Connections(opts.connections),
)
res := atk.Attack(tr, opts.rate, opts.duration)
enc := vegeta.NewEncoder(out)
sig := make(chan os.Signal, 1)
signal.Notify(sig, os.Interrupt)
for {
select {
case <-sig:
atk.Stop()
return nil
case r, ok := <-res:
if !ok {
return nil
}
if err = enc.Encode(r); err != nil {
return err
}
}
}
}