118 lines
2.7 KiB
Go
118 lines
2.7 KiB
Go
package main
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import (
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"flag"
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"io"
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"log"
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"math/rand"
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"net/http"
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"os"
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"runtime"
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"syscall"
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"time"
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)
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func init() {
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runtime.GOMAXPROCS(runtime.NumCPU())
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}
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func main() {
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var (
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// Flags
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rate = flag.Uint("rate", 50, "Requests per second")
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targetsf = flag.String("targets", "targets.txt", "Targets file")
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ordering = flag.String("ordering", "random", "Attack ordering [sequential, random]")
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duration = flag.Duration("duration", 10*time.Second, "Duration of the test")
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reporter = flag.String("reporter", "text", "Reporter to use [text]")
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output = flag.String("output", "stdout", "Reporter output file")
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)
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flag.Parse()
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if flag.NFlag() == 0 {
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flag.Usage()
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return
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}
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if err := increaseResourceLimits(); err != nil {
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log.Fatalf("Couldn't increase resource limits: %s", err)
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}
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// Validate rate argument
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if *rate == 0 {
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log.Fatal("rate can't be zero")
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}
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// Parse targets file
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targets, err := NewTargetsFromFile(*targetsf)
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if err != nil {
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log.Fatal(err)
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}
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// Parse ordering argument
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if *ordering == "random" {
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rand.Seed(time.Now().UnixNano())
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} else if *ordering != "sequential" {
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log.Fatalf("Unknown ordering %s", *ordering)
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}
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// Parse duration
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if *duration == 0 {
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log.Fatal("Duration provided is invalid")
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}
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// Parse reporter
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var rep Reporter
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switch *reporter {
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case "text":
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rep = NewTextReporter()
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default:
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log.Println("reporter provided is not supported. using text")
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rep = NewTextReporter()
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}
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var out io.WriteCloser
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switch *output {
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case "stdout":
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out = os.Stdout
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default:
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out, err = os.Create(*output)
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if err != nil {
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log.Fatalf("Couldn't open `%s` for writing report: %s", *output, err)
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}
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defer out.Close()
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}
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log.Printf("Vegeta is attacking %d targets in %s order for %s...\n", len(targets), *ordering, *duration)
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attack(targets, *ordering, *rate, *duration, rep)
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log.Println("Done!")
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// Report results!
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log.Printf("Writing report to '%s'...", *output)
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if rep.Report(out) != nil {
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log.Println("Failed to report!")
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}
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}
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func attack(targets Targets, ordering string, rate uint, duration time.Duration, rep Reporter) {
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hits := make(chan *http.Request, rate*uint((duration).Seconds()))
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defer close(hits)
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responses := make(chan *Response, cap(hits))
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defer close(responses)
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client := NewClient(rate)
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go client.Drill(hits, responses) // Attack!
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for i, idxs := 0, targets.Iter(ordering); i < cap(hits); i++ {
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hits <- targets[idxs[i%len(idxs)]]
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}
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// Wait for all requests to finish
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for i := 0; i < cap(responses); i++ {
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rep.Add(<-responses)
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}
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}
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func increaseResourceLimits() error {
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limit := &syscall.Rlimit{Cur: syscall.RLIM_INFINITY}
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if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, limit); err != nil {
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return err
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}
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return nil
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}
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