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https://github.com/cwinfo/yggdrasil-go.git
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Merge pull request #562 from AwesomePatrol/dev/patrol/bench01
#60 Add simple tests and benchmark
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commit
83e3a24423
204
src/yggdrasil/core_test.go
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204
src/yggdrasil/core_test.go
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package yggdrasil
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import (
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"bytes"
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"math/rand"
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"os"
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"testing"
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"time"
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"github.com/gologme/log"
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"github.com/yggdrasil-network/yggdrasil-go/src/config"
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)
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// GenerateConfig produces default configuration with suitable modifications for tests.
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func GenerateConfig() *config.NodeConfig {
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cfg := config.GenerateConfig()
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cfg.AdminListen = "none"
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cfg.Listen = []string{"tcp://127.0.0.1:0"}
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cfg.IfName = "none"
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return cfg
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}
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// GetLoggerWithPrefix creates a new logger instance wih prefix.
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// If verbose is set to true, three log levels are enabled: "info", "warn", "error".
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func GetLoggerWithPrefix(prefix string, verbose bool) *log.Logger {
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l := log.New(os.Stderr, prefix, log.Flags())
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if !verbose {
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return l
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}
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l.EnableLevel("info")
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l.EnableLevel("warn")
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l.EnableLevel("error")
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return l
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}
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// CreateAndConnectTwo creates two nodes. nodeB connects to nodeA.
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// Verbosity flag is passed to logger.
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func CreateAndConnectTwo(t testing.TB, verbose bool) (nodeA *Core, nodeB *Core) {
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nodeA = new(Core)
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_, err := nodeA.Start(GenerateConfig(), GetLoggerWithPrefix("A: ", verbose))
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if err != nil {
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t.Fatal(err)
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}
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nodeB = new(Core)
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_, err = nodeB.Start(GenerateConfig(), GetLoggerWithPrefix("B: ", verbose))
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if err != nil {
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t.Fatal(err)
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}
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err = nodeB.AddPeer("tcp://"+nodeA.link.tcp.getAddr().String(), "")
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if err != nil {
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t.Fatal(err)
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}
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if l := len(nodeA.GetPeers()); l != 1 {
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t.Fatal("unexpected number of peers", l)
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}
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if l := len(nodeB.GetPeers()); l != 1 {
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t.Fatal("unexpected number of peers", l)
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}
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return nodeA, nodeB
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}
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// WaitConnected blocks until either nodes negotiated DHT or 5 seconds passed.
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func WaitConnected(nodeA, nodeB *Core) bool {
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// It may take up to 3 seconds, but let's wait 5.
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for i := 0; i < 50; i++ {
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time.Sleep(100 * time.Millisecond)
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if len(nodeA.GetSwitchPeers()) > 0 && len(nodeB.GetSwitchPeers()) > 0 {
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return true
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}
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}
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return false
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}
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// CreateEchoListener creates a routine listening on nodeA. It expects repeats messages of length bufLen.
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// It returns a channel used to synchronize the routine with caller.
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func CreateEchoListener(t testing.TB, nodeA *Core, bufLen int, repeats int) chan struct{} {
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// Listen. Doing it here guarantees that there will be something to try to connect when it returns.
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listener, err := nodeA.ConnListen()
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if err != nil {
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t.Fatal(err)
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}
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// Start routine
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done := make(chan struct{})
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go func() {
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defer listener.Close()
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conn, err := listener.Accept()
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if err != nil {
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t.Error(err)
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return
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}
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defer conn.Close()
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buf := make([]byte, bufLen)
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for i := 0; i < repeats; i++ {
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n, err := conn.Read(buf)
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if err != nil {
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t.Error(err)
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return
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}
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if n != bufLen {
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t.Error("missing data")
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return
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}
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_, err = conn.Write(buf)
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if err != nil {
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t.Error(err)
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}
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}
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done <- struct{}{}
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}()
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return done
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}
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// TestCore_Start_Connect checks if two nodes can connect together.
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func TestCore_Start_Connect(t *testing.T) {
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CreateAndConnectTwo(t, true)
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}
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// TestCore_Start_Transfer checks that messages can be passed between nodes (in both directions).
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func TestCore_Start_Transfer(t *testing.T) {
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nodeA, nodeB := CreateAndConnectTwo(t, true)
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msgLen := 1500
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done := CreateEchoListener(t, nodeA, msgLen, 1)
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if !WaitConnected(nodeA, nodeB) {
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t.Fatal("nodes did not connect")
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}
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// Dial
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dialer, err := nodeB.ConnDialer()
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if err != nil {
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t.Fatal(err)
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}
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conn, err := dialer.Dial("nodeid", nodeA.NodeID().String())
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if err != nil {
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t.Fatal(err)
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}
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defer conn.Close()
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msg := make([]byte, msgLen)
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rand.Read(msg)
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conn.Write(msg)
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if err != nil {
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t.Fatal(err)
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}
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buf := make([]byte, msgLen)
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_, err = conn.Read(buf)
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if err != nil {
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t.Fatal(err)
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}
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if bytes.Compare(msg, buf) != 0 {
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t.Fatal("expected echo")
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}
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<-done
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}
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// BenchmarkCore_Start_Transfer estimates the possible transfer between nodes (in MB/s).
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func BenchmarkCore_Start_Transfer(b *testing.B) {
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nodeA, nodeB := CreateAndConnectTwo(b, false)
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msgLen := 1500 // typical MTU
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done := CreateEchoListener(b, nodeA, msgLen, b.N)
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if !WaitConnected(nodeA, nodeB) {
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b.Fatal("nodes did not connect")
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}
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// Dial
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dialer, err := nodeB.ConnDialer()
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if err != nil {
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b.Fatal(err)
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}
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conn, err := dialer.Dial("nodeid", nodeA.NodeID().String())
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if err != nil {
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b.Fatal(err)
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}
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defer conn.Close()
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msg := make([]byte, msgLen)
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rand.Read(msg)
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buf := make([]byte, msgLen)
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b.SetBytes(int64(b.N * msgLen))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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conn.Write(msg)
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if err != nil {
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b.Fatal(err)
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}
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_, err = conn.Read(buf)
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if err != nil {
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b.Fatal(err)
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}
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}
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<-done
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}
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