You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
220 lines
5.2 KiB
220 lines
5.2 KiB
package main
|
|
|
|
import (
|
|
"crypto/md5"
|
|
"encoding/binary"
|
|
"encoding/hex"
|
|
"encoding/json"
|
|
"fmt"
|
|
"math/rand"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/gorilla/websocket"
|
|
"github.com/pkg/errors"
|
|
|
|
rpctypes "github.com/tendermint/tendermint/rpc/lib/types"
|
|
"github.com/tendermint/tmlibs/log"
|
|
)
|
|
|
|
const (
|
|
sendTimeout = 10 * time.Second
|
|
// see https://github.com/tendermint/go-rpc/blob/develop/server/handlers.go#L313
|
|
pingPeriod = (30 * 9 / 10) * time.Second
|
|
|
|
// the size of a transaction in bytes.
|
|
txSize = 250
|
|
)
|
|
|
|
type transacter struct {
|
|
Target string
|
|
Rate int
|
|
Connections int
|
|
|
|
conns []*websocket.Conn
|
|
wg sync.WaitGroup
|
|
stopped bool
|
|
|
|
logger log.Logger
|
|
}
|
|
|
|
func newTransacter(target string, connections int, rate int) *transacter {
|
|
return &transacter{
|
|
Target: target,
|
|
Rate: rate,
|
|
Connections: connections,
|
|
conns: make([]*websocket.Conn, connections),
|
|
logger: log.NewNopLogger(),
|
|
}
|
|
}
|
|
|
|
// SetLogger lets you set your own logger
|
|
func (t *transacter) SetLogger(l log.Logger) {
|
|
t.logger = l
|
|
}
|
|
|
|
// Start opens N = `t.Connections` connections to the target and creates read
|
|
// and write goroutines for each connection.
|
|
func (t *transacter) Start() error {
|
|
t.stopped = false
|
|
|
|
rand.Seed(time.Now().Unix())
|
|
|
|
for i := 0; i < t.Connections; i++ {
|
|
c, _, err := connect(t.Target)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
t.conns[i] = c
|
|
}
|
|
|
|
t.wg.Add(2 * t.Connections)
|
|
for i := 0; i < t.Connections; i++ {
|
|
go t.sendLoop(i)
|
|
go t.receiveLoop(i)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Stop closes the connections.
|
|
func (t *transacter) Stop() {
|
|
t.stopped = true
|
|
t.wg.Wait()
|
|
for _, c := range t.conns {
|
|
c.Close()
|
|
}
|
|
}
|
|
|
|
// receiveLoop reads messages from the connection (empty in case of
|
|
// `broadcast_tx_async`).
|
|
func (t *transacter) receiveLoop(connIndex int) {
|
|
c := t.conns[connIndex]
|
|
defer t.wg.Done()
|
|
for {
|
|
_, _, err := c.ReadMessage()
|
|
if err != nil {
|
|
if !websocket.IsCloseError(err, websocket.CloseNormalClosure) {
|
|
t.logger.Error("failed to read response", "err", err)
|
|
}
|
|
return
|
|
}
|
|
if t.stopped {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// sendLoop generates transactions at a given rate.
|
|
func (t *transacter) sendLoop(connIndex int) {
|
|
c := t.conns[connIndex]
|
|
|
|
c.SetPingHandler(func(message string) error {
|
|
err := c.WriteControl(websocket.PongMessage, []byte(message), time.Now().Add(sendTimeout))
|
|
if err == websocket.ErrCloseSent {
|
|
return nil
|
|
} else if e, ok := err.(net.Error); ok && e.Temporary() {
|
|
return nil
|
|
}
|
|
return err
|
|
})
|
|
|
|
logger := t.logger.With("addr", c.RemoteAddr())
|
|
|
|
var txNumber = 0
|
|
|
|
pingsTicker := time.NewTicker(pingPeriod)
|
|
txsTicker := time.NewTicker(1 * time.Second)
|
|
defer func() {
|
|
pingsTicker.Stop()
|
|
txsTicker.Stop()
|
|
t.wg.Done()
|
|
}()
|
|
|
|
// hash of the host name is a part of each tx
|
|
var hostnameHash [md5.Size]byte
|
|
hostname, err := os.Hostname()
|
|
if err != nil {
|
|
hostname = "127.0.0.1"
|
|
}
|
|
hostnameHash = md5.Sum([]byte(hostname))
|
|
|
|
for {
|
|
select {
|
|
case <-txsTicker.C:
|
|
startTime := time.Now()
|
|
|
|
for i := 0; i < t.Rate; i++ {
|
|
// each transaction embeds connection index, tx number and hash of the hostname
|
|
tx := generateTx(connIndex, txNumber, hostnameHash)
|
|
paramsJson, err := json.Marshal(map[string]interface{}{"tx": hex.EncodeToString(tx)})
|
|
if err != nil {
|
|
fmt.Printf("failed to encode params: %v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
rawParamsJson := json.RawMessage(paramsJson)
|
|
|
|
c.SetWriteDeadline(time.Now().Add(sendTimeout))
|
|
err = c.WriteJSON(rpctypes.RPCRequest{
|
|
JSONRPC: "2.0",
|
|
ID: "tm-bench",
|
|
Method: "broadcast_tx_async",
|
|
Params: rawParamsJson,
|
|
})
|
|
if err != nil {
|
|
fmt.Printf("%v. Try reducing the connections count and increasing the rate.\n", errors.Wrap(err, "txs send failed"))
|
|
os.Exit(1)
|
|
}
|
|
|
|
txNumber++
|
|
}
|
|
|
|
timeToSend := time.Now().Sub(startTime)
|
|
time.Sleep(time.Second - timeToSend)
|
|
logger.Info(fmt.Sprintf("sent %d transactions", t.Rate), "took", timeToSend)
|
|
case <-pingsTicker.C:
|
|
// go-rpc server closes the connection in the absence of pings
|
|
c.SetWriteDeadline(time.Now().Add(sendTimeout))
|
|
if err := c.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
|
|
logger.Error("failed to write ping message", "err", err)
|
|
}
|
|
}
|
|
|
|
if t.stopped {
|
|
// To cleanly close a connection, a client should send a close
|
|
// frame and wait for the server to close the connection.
|
|
c.SetWriteDeadline(time.Now().Add(sendTimeout))
|
|
err := c.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
|
|
if err != nil {
|
|
logger.Error("failed to write close message", "err", err)
|
|
}
|
|
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
func connect(host string) (*websocket.Conn, *http.Response, error) {
|
|
u := url.URL{Scheme: "ws", Host: host, Path: "/websocket"}
|
|
return websocket.DefaultDialer.Dial(u.String(), nil)
|
|
}
|
|
|
|
func generateTx(connIndex int, txNumber int, hostnameHash [md5.Size]byte) []byte {
|
|
tx := make([]byte, txSize)
|
|
|
|
binary.PutUvarint(tx[:8], uint64(connIndex))
|
|
binary.PutUvarint(tx[8:16], uint64(txNumber))
|
|
copy(tx[16:32], hostnameHash[:16])
|
|
binary.PutUvarint(tx[32:40], uint64(time.Now().Unix()))
|
|
|
|
// 40-* random data
|
|
if _, err := rand.Read(tx[40:]); err != nil {
|
|
panic(errors.Wrap(err, "failed to read random bytes"))
|
|
}
|
|
|
|
return tx
|
|
}
|