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193 lines
4.7 KiB
193 lines
4.7 KiB
package main
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import (
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"flag"
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"fmt"
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"os"
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"os/signal"
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"strings"
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"sync"
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"syscall"
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"time"
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"github.com/go-kit/kit/log/term"
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"github.com/tendermint/tendermint/libs/log"
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tmrpc "github.com/tendermint/tendermint/rpc/client"
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)
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var logger = log.NewNopLogger()
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func main() {
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var durationInt, txsRate, connections, txSize int
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var verbose bool
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var outputFormat, broadcastTxMethod string
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flagSet := flag.NewFlagSet("tm-bench", flag.ExitOnError)
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flagSet.IntVar(&connections, "c", 1, "Connections to keep open per endpoint")
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flagSet.IntVar(&durationInt, "T", 10, "Exit after the specified amount of time in seconds")
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flagSet.IntVar(&txsRate, "r", 1000, "Txs per second to send in a connection")
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flagSet.IntVar(&txSize, "s", 250, "The size of a transaction in bytes, must be greater than or equal to 40.")
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flagSet.StringVar(&outputFormat, "output-format", "plain", "Output format: plain or json")
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flagSet.StringVar(&broadcastTxMethod, "broadcast-tx-method", "async", "Broadcast method: async (no guarantees; fastest), sync (ensures tx is checked) or commit (ensures tx is checked and committed; slowest)")
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flagSet.BoolVar(&verbose, "v", false, "Verbose output")
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flagSet.Usage = func() {
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fmt.Println(`Tendermint blockchain benchmarking tool.
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Usage:
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tm-bench [-c 1] [-T 10] [-r 1000] [-s 250] [endpoints] [-output-format <plain|json> [-broadcast-tx-method <async|sync|commit>]]
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Examples:
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tm-bench localhost:26657`)
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fmt.Println("Flags:")
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flagSet.PrintDefaults()
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}
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flagSet.Parse(os.Args[1:])
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if flagSet.NArg() == 0 {
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flagSet.Usage()
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os.Exit(1)
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}
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if verbose {
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if outputFormat == "json" {
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printErrorAndExit("Verbose mode not supported with json output.")
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}
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// Color errors red
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colorFn := func(keyvals ...interface{}) term.FgBgColor {
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for i := 1; i < len(keyvals); i += 2 {
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if _, ok := keyvals[i].(error); ok {
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return term.FgBgColor{Fg: term.White, Bg: term.Red}
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}
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}
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return term.FgBgColor{}
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}
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logger = log.NewTMLoggerWithColorFn(log.NewSyncWriter(os.Stdout), colorFn)
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fmt.Printf("Running %ds test @ %s\n", durationInt, flagSet.Arg(0))
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}
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if txSize < 40 {
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printErrorAndExit("The size of a transaction must be greater than or equal to 40.")
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}
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if broadcastTxMethod != "async" &&
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broadcastTxMethod != "sync" &&
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broadcastTxMethod != "commit" {
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printErrorAndExit("broadcast-tx-method should be either 'sync', 'async' or 'commit'.")
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}
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var (
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endpoints = strings.Split(flagSet.Arg(0), ",")
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client = tmrpc.NewHTTP(endpoints[0], "/websocket")
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initialHeight = latestBlockHeight(client)
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)
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logger.Info("Latest block height", "h", initialHeight)
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transacters := startTransacters(
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endpoints,
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connections,
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txsRate,
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txSize,
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"broadcast_tx_"+broadcastTxMethod,
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)
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// Quit when interrupted or received SIGTERM.
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt, syscall.SIGTERM)
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go func() {
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for sig := range c {
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fmt.Printf("captured %v, exiting...\n", sig)
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for _, t := range transacters {
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t.Stop()
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}
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os.Exit(1)
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}
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}()
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// Wait until transacters have begun until we get the start time.
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timeStart := time.Now()
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logger.Info("Time last transacter started", "t", timeStart)
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duration := time.Duration(durationInt) * time.Second
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timeEnd := timeStart.Add(duration)
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logger.Info("End time for calculation", "t", timeEnd)
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<-time.After(duration)
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for i, t := range transacters {
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t.Stop()
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numCrashes := countCrashes(t.connsBroken)
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if numCrashes != 0 {
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fmt.Printf("%d connections crashed on transacter #%d\n", numCrashes, i)
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}
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}
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logger.Debug("Time all transacters stopped", "t", time.Now())
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stats, err := calculateStatistics(
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client,
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initialHeight,
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timeStart,
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durationInt,
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)
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if err != nil {
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printErrorAndExit(err.Error())
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}
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printStatistics(stats, outputFormat)
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}
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func latestBlockHeight(client tmrpc.Client) int64 {
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status, err := client.Status()
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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return status.SyncInfo.LatestBlockHeight
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}
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func countCrashes(crashes []bool) int {
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count := 0
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for i := 0; i < len(crashes); i++ {
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if crashes[i] {
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count++
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}
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}
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return count
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}
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func startTransacters(
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endpoints []string,
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connections,
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txsRate int,
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txSize int,
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broadcastTxMethod string,
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) []*transacter {
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transacters := make([]*transacter, len(endpoints))
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wg := sync.WaitGroup{}
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wg.Add(len(endpoints))
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for i, e := range endpoints {
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t := newTransacter(e, connections, txsRate, txSize, broadcastTxMethod)
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t.SetLogger(logger)
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go func(i int) {
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defer wg.Done()
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if err := t.Start(); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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transacters[i] = t
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}(i)
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}
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wg.Wait()
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return transacters
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}
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func printErrorAndExit(err string) {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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