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140 lines
3.4 KiB
140 lines
3.4 KiB
package main
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import (
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"crypto/rand"
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"encoding/binary"
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"encoding/hex"
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"flag"
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"fmt"
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"os"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/tendermint/go-rpc/client"
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rpctypes "github.com/tendermint/go-rpc/types"
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)
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func main() {
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flag.Parse()
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args := flag.Args()
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if len(args) < 2 {
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fmt.Println("transact.go expects at least two arguments (ntxs, hosts)")
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os.Exit(1)
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}
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nTxS, hostS := args[0], args[1]
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nTxs, err := strconv.Atoi(nTxS)
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if err != nil {
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fmt.Println("ntxs must be an integer:", err)
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os.Exit(1)
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}
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hosts := strings.Split(hostS, ",")
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errCh := make(chan error, 1000)
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wg := new(sync.WaitGroup)
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wg.Add(len(hosts))
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start := time.Now()
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fmt.Printf("Sending %d txs on every host %v\n", nTxs, hosts)
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for i, host := range hosts {
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go broadcastTxsToHost(wg, errCh, i, host, nTxs, 0)
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}
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wg.Wait()
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fmt.Println("Done broadcasting txs. Took", time.Since(start))
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}
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func broadcastTxsToHost(wg *sync.WaitGroup, errCh chan error, valI int, valHost string, nTxs int, txCount int) {
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reconnectSleepSeconds := time.Second * 1
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// thisStart := time.Now()
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// cli := rpcclient.NewClientURI(valHost + ":46657")
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fmt.Println("Connecting to host to broadcast txs", valI, valHost)
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cli := rpcclient.NewWSClient(valHost, "/websocket")
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if _, err := cli.Start(); err != nil {
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if nTxs == 0 {
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time.Sleep(reconnectSleepSeconds)
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broadcastTxsToHost(wg, errCh, valI, valHost, nTxs, txCount)
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return
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}
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fmt.Printf("Error starting websocket connection to val%d (%s): %v\n", valI, valHost, err)
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os.Exit(1)
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}
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reconnect := make(chan struct{})
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go func(count int) {
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LOOP:
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for {
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ticker := time.NewTicker(reconnectSleepSeconds)
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select {
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case <-cli.ResultsCh:
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count += 1
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// nTxs == 0 means just loop forever
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if nTxs > 0 && count == nTxs {
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break LOOP
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}
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case err := <-cli.ErrorsCh:
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fmt.Println("err: val", valI, valHost, err)
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case <-cli.Quit:
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broadcastTxsToHost(wg, errCh, valI, valHost, nTxs, count)
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return
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case <-reconnect:
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broadcastTxsToHost(wg, errCh, valI, valHost, nTxs, count)
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return
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case <-ticker.C:
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if nTxs == 0 {
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cli.Stop()
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broadcastTxsToHost(wg, errCh, valI, valHost, nTxs, count)
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return
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}
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}
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}
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fmt.Printf("Received all responses from node %d (%s)\n", valI, valHost)
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wg.Done()
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}(txCount)
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var i = 0
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for {
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/* if i%(nTxs/4) == 0 {
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fmt.Printf("Have sent %d txs to node %d. Total time so far: %v\n", i, valI, time.Since(thisStart))
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}*/
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if !cli.IsRunning() {
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return
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}
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tx := generateTx(i, valI)
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if err := cli.WriteJSON(rpctypes.RPCRequest{
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JSONRPC: "2.0",
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ID: "",
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Method: "broadcast_tx_async",
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Params: []interface{}{hex.EncodeToString(tx)},
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}); err != nil {
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fmt.Printf("Error sending tx %d to validator %d: %v. Attempt reconnect\n", i, valI, err)
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reconnect <- struct{}{}
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return
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}
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i += 1
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if nTxs > 0 && i >= nTxs {
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break
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} else if nTxs == 0 {
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time.Sleep(time.Millisecond * 1)
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}
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}
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fmt.Printf("Done sending %d txs to node s%d (%s)\n", nTxs, valI, valHost)
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}
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func generateTx(i, valI int) []byte {
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// a tx encodes the validator index, the tx number, and some random junk
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// TODO: read random bytes into more of the tx
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tx := make([]byte, 250)
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binary.PutUvarint(tx[:32], uint64(valI))
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binary.PutUvarint(tx[32:64], uint64(i))
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if _, err := rand.Read(tx[234:]); err != nil {
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fmt.Println("err reading from crypto/rand", err)
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os.Exit(1)
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}
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return tx
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}
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