ceremonyclient/go-libp2p/p2p/security/noise/benchmark_test.go

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2023-08-21 03:50:38 +00:00
package noise
import (
"context"
"io"
"math/rand"
"net"
"testing"
"time"
"golang.org/x/crypto/chacha20poly1305"
"github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/sec"
)
type testMode int
const (
readBufferGtEncMsg testMode = iota
readBufferLtPlainText
)
var bcs = map[string]struct {
m testMode
}{
"readBuffer > encrypted message": {
readBufferGtEncMsg,
},
"readBuffer < decrypted plaintext": {
readBufferLtPlainText,
},
}
func makeTransport(b *testing.B) *Transport {
b.Helper()
priv, _, err := crypto.GenerateKeyPair(crypto.Ed25519, 256)
if err != nil {
b.Fatal(err)
}
tpt, err := New(ID, priv, nil)
if err != nil {
b.Fatalf("error constructing transport: %v", err)
}
return tpt
}
type benchenv struct {
*testing.B
initTpt *Transport
respTpt *Transport
rndSrc rand.Source
}
func setupEnv(b *testing.B) *benchenv {
b.StopTimer()
defer b.StartTimer()
initTpt := makeTransport(b)
respTpt := makeTransport(b)
return &benchenv{
B: b,
initTpt: initTpt,
respTpt: respTpt,
rndSrc: rand.NewSource(42),
}
}
func (b benchenv) connect(stopTimer bool) (*secureSession, *secureSession) {
initConn, respConn := net.Pipe()
if stopTimer {
b.StopTimer()
defer b.StartTimer()
}
var initSession sec.SecureConn
var initErr error
done := make(chan struct{})
go func() {
defer close(done)
initSession, initErr = b.initTpt.SecureOutbound(context.TODO(), initConn, b.respTpt.localID)
}()
respSession, respErr := b.respTpt.SecureInbound(context.TODO(), respConn, "")
<-done
if initErr != nil {
b.Fatal(initErr)
}
if respErr != nil {
b.Fatal(respErr)
}
return initSession.(*secureSession), respSession.(*secureSession)
}
func drain(r io.Reader, done chan<- error, writeTo io.Writer) {
_, err := io.Copy(writeTo, r)
done <- err
}
type discardWithBuffer struct {
buf []byte
io.Writer
}
func (d *discardWithBuffer) ReadFrom(r io.Reader) (n int64, err error) {
readSize := 0
for {
readSize, err = r.Read(d.buf)
n += int64(readSize)
if err != nil {
if err == io.EOF {
return n, nil
}
return
}
}
}
func sink(dst io.WriteCloser, src io.Reader, done chan<- error, buf []byte) {
_, err := io.CopyBuffer(dst, src, buf)
if err != nil {
done <- err
}
done <- dst.Close()
}
func pipeRandom(src rand.Source, w io.WriteCloser, r io.Reader, n int64, plainTextBuf []byte,
writeTo io.Writer) error {
rnd := rand.New(src)
lr := io.LimitReader(rnd, n)
writeCh := make(chan error, 1)
readCh := make(chan error, 1)
go sink(w, lr, writeCh, plainTextBuf)
go drain(r, readCh, writeTo)
writeDone := false
readDone := false
for !(readDone && writeDone) {
select {
case err := <-readCh:
if err != nil && err != io.EOF {
return err
}
readDone = true
case err := <-writeCh:
if err != nil && err != io.EOF {
return err
}
writeDone = true
}
}
return nil
}
func benchDataTransfer(b *benchenv, dataSize int64, m testMode) {
var totalBytes int64
var totalTime time.Duration
plainTextBufs := make([][]byte, 61)
writeTos := make(map[int]io.Writer)
for i := 0; i < len(plainTextBufs); i++ {
var rbuf []byte
// plaintext will be 2 KB to 62 KB
plainTextBufs[i] = make([]byte, (i+2)*1024)
switch m {
case readBufferGtEncMsg:
rbuf = make([]byte, len(plainTextBufs[i])+chacha20poly1305.Overhead+1)
case readBufferLtPlainText:
rbuf = make([]byte, len(plainTextBufs[i])-2)
}
writeTos[i] = &discardWithBuffer{rbuf, io.Discard}
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
initSession, respSession := b.connect(true)
start := time.Now()
bufi := i % len(plainTextBufs)
err := pipeRandom(b.rndSrc, initSession, respSession, dataSize, plainTextBufs[bufi], writeTos[bufi])
if err != nil {
b.Fatalf("error sending random data: %s", err)
}
elapsed := time.Since(start)
totalTime += elapsed
totalBytes += dataSize
}
bytesPerSec := float64(totalBytes) / totalTime.Seconds()
b.ReportMetric(bytesPerSec, "bytes/sec")
}
func BenchmarkTransfer1MB(b *testing.B) {
for n, bc := range bcs {
b.Run(n, func(b *testing.B) {
benchDataTransfer(setupEnv(b), 1024*1024, bc.m)
})
}
}
func BenchmarkTransfer100MB(b *testing.B) {
for n, bc := range bcs {
b.Run(n, func(b *testing.B) {
benchDataTransfer(setupEnv(b), 1024*1024*100, bc.m)
})
}
}
func BenchmarkTransfer500Mb(b *testing.B) {
for n, bc := range bcs {
b.Run(n, func(b *testing.B) {
benchDataTransfer(setupEnv(b), 1024*1024*500, bc.m)
})
}
}
func (b benchenv) benchHandshake() {
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
i, r := b.connect(false)
b.StopTimer()
err := i.Close()
if err != nil {
b.Errorf("error closing session: %s", err)
}
err = r.Close()
if err != nil {
b.Errorf("error closing session: %s", err)
}
b.StartTimer()
}
}
func BenchmarkHandshakeXX(b *testing.B) {
env := setupEnv(b)
env.benchHandshake()
}