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main.go
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main.go
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package main
import (
"fmt"
"log"
"math/rand"
"net/http"
"os"
"strconv"
"time"
vegeta "github.com/tsenart/vegeta/lib"
)
func main() {
rate := uint64(100) // per second
duration := 3 * time.Second
url := os.Args[1]
targeter := NewFooBarTargeter(vegeta.Target{
Method: "GET",
URL: url,
})
attacker := vegeta.NewAttacker()
var metrics vegeta.Metrics
for res := range attacker.Attack(targeter, rate, duration) {
metrics.Add(res)
}
metrics.Close()
fmt.Printf("total number of requests: %d\n", metrics.Requests)
fmt.Printf("99th percentile: %s\n", metrics.Latencies.P99)
fmt.Printf("percentage of non-error responses: %g\n", metrics.Success)
fmt.Printf("errors: %+v\n", metrics.Errors)
}
// NewFooBarTargeter returns a Targeter where we calculate a custom header
// for each request.
func NewFooBarTargeter(target vegeta.Target) vegeta.Targeter {
return func(tgt *vegeta.Target) error {
if tgt == nil {
return vegeta.ErrNilTarget
}
*tgt = target
tgt.Header = http.Header{}
tgt.Header.Add("rand", strconv.Itoa(rand.Intn(100)))
log.Printf("%+v", tgt)
return nil
}
}