func runPublisher(startwg, donewg *sync.WaitGroup, opts nats.Options, numMsgs int, msgSize int) {
nc, err := opts.Connect()
if err != nil {
log.Fatalf("Can't connect: %v\n", err)
}
defer nc.Close()
startwg.Done()
args := flag.Args()
subj := args[0]
var msg []byte
if msgSize > 0 {
msg = make([]byte, msgSize)
}
start := time.Now()
for i := 0; i < numMsgs; i++ {
nc.Publish(subj, msg)
}
nc.Flush()
benchmark.AddPubSample(bench.NewSample(numMsgs, msgSize, start, time.Now(), nc))
donewg.Done()
}
func runSubscriber(startwg, donewg *sync.WaitGroup, opts nats.Options, numMsgs int, msgSize int) {
nc, err := opts.Connect()
if err != nil {
log.Fatalf("Can't connect: %v\n", err)
}
args := flag.Args()
subj := args[0]
received := 0
start := time.Now()
nc.Subscribe(subj, func(msg *nats.Msg) {
received++
if received >= numMsgs {
benchmark.AddSubSample(bench.NewSample(numMsgs, msgSize, start, time.Now(), nc))
donewg.Done()
nc.Close()
}
})
nc.Flush()
startwg.Done()
}