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client.go
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client.go
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package main
import (
"flag"
"fmt"
"log"
"net"
"time"
"github.com/myzhan/boomer"
)
var bindHost string
var bindPort string
var stopChannel chan bool
func worker() {
conn, err := net.Dial("tcp", fmt.Sprintf("%s:%s", bindHost, bindPort))
if err != nil {
log.Println(err)
return
}
defer conn.Close()
readBuff := make([]byte, 5)
// Usually, you shouldn't run an infinite loop in worker function, unless you know exactly what you are doing.
// It will disable features like rate limit.
for {
select {
case <-stopChannel:
return
default:
// timeout after 1 second
start := time.Now()
conn.SetWriteDeadline(time.Now().Add(time.Second))
n, err := conn.Write([]byte("hello"))
elapsed := time.Since(start)
if err != nil {
boomer.RecordFailure("tcp", "write failure", elapsed.Nanoseconds()/int64(time.Millisecond), err.Error())
continue
}
// len("hello") == 5
if n != 5 {
boomer.RecordFailure("tcp", "write mismatch", elapsed.Nanoseconds()/int64(time.Millisecond), "write mismatch")
continue
}
conn.SetReadDeadline(time.Now().Add(time.Second))
n, err = conn.Read(readBuff)
elapsed = time.Since(start)
if err != nil {
boomer.RecordFailure("tcp", "read failure", elapsed.Nanoseconds()/int64(time.Millisecond), err.Error())
continue
}
if n != 5 {
boomer.RecordFailure("tcp", "read mismatch", elapsed.Nanoseconds()/int64(time.Millisecond), "read mismatch")
continue
}
boomer.RecordSuccess("tcp", "success", elapsed.Nanoseconds()/int64(time.Millisecond), 5)
}
}
}
func main() {
log.SetFlags(log.LstdFlags | log.Lshortfile)
flag.Parse()
task := &boomer.Task{
Name: "tcp",
Weight: 10,
Fn: worker,
}
boomer.Events.Subscribe("boomer:spawn", func(workers int, spawnRate float64) {
stopChannel = make(chan bool)
})
boomer.Events.Subscribe("boomer:stop", func() {
close(stopChannel)
})
boomer.Events.Subscribe("boomer:quit", func() {
close(stopChannel)
time.Sleep(time.Second)
})
boomer.Run(task)
}
func init() {
flag.StringVar(&bindHost, "host", "127.0.0.1", "host")
flag.StringVar(&bindPort, "port", "4567", "port")
}