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package p2p
import (
"bytes"
"sync"
"testing"
"time"
"github.com/tendermint/tendermint/binary"
. "github.com/tendermint/tendermint/common"
"github.com/tendermint/tendermint/types"
)
type PeerMessage struct {
PeerKey string
Bytes []byte
Counter int
}
type TestReactor struct {
mtx sync.Mutex
channels []*ChannelDescriptor
peersAdded []*Peer
peersRemoved []*Peer
logMessages bool
msgsCounter int
msgsReceived map[byte][]PeerMessage
}
func NewTestReactor(channels []*ChannelDescriptor, logMessages bool) *TestReactor {
return &TestReactor{
channels: channels,
logMessages: logMessages,
msgsReceived: make(map[byte][]PeerMessage),
}
}
func (tr *TestReactor) Start(sw *Switch) {
}
func (tr *TestReactor) Stop() {
}
func (tr *TestReactor) GetChannels() []*ChannelDescriptor {
return tr.channels
}
func (tr *TestReactor) AddPeer(peer *Peer) {
tr.mtx.Lock()
defer tr.mtx.Unlock()
tr.peersAdded = append(tr.peersAdded, peer)
}
func (tr *TestReactor) RemovePeer(peer *Peer, reason interface{}) {
tr.mtx.Lock()
defer tr.mtx.Unlock()
tr.peersRemoved = append(tr.peersRemoved, peer)
}
func (tr *TestReactor) Receive(chId byte, peer *Peer, msgBytes []byte) {
if tr.logMessages {
tr.mtx.Lock()
defer tr.mtx.Unlock()
//fmt.Printf("Received: %X, %X\n", chId, msgBytes)
tr.msgsReceived[chId] = append(tr.msgsReceived[chId], PeerMessage{peer.Key, msgBytes, tr.msgsCounter})
tr.msgsCounter++
}
}
//-----------------------------------------------------------------------------
// convenience method for creating two switches connected to each other.
func makeSwitchPair(t testing.TB, initSwitch func(*Switch) *Switch) (*Switch, *Switch) {
// Create two switches that will be interconnected.
s1 := initSwitch(NewSwitch())
s1.SetNodeInfo(&types.NodeInfo{
Moniker: "switch1",
ChainID: "testing",
Version: "123.123.123",
})
s2 := initSwitch(NewSwitch())
s2.SetNodeInfo(&types.NodeInfo{
Moniker: "switch2",
ChainID: "testing",
Version: "123.123.123",
})
// Start switches
s1.Start()
s2.Start()
// Create a listener for s1
l := NewDefaultListener("tcp", ":8001", true)
// Dial the listener & add the connection to s2.
lAddr := l.ExternalAddress()
connOut, err := lAddr.Dial()
if err != nil {
t.Fatalf("Could not connect to listener address %v", lAddr)
} else {
t.Logf("Created a connection to listener address %v", lAddr)
}
connIn, ok := <-l.Connections()
if !ok {
t.Fatalf("Could not get inbound connection from listener")
}
go s1.AddPeerWithConnection(connIn, false) // AddPeer is blocking, requires handshake.
s2.AddPeerWithConnection(connOut, true)
// Wait for things to happen, peers to get added...
time.Sleep(100 * time.Millisecond)
// Close the server, no longer needed.
l.Stop()
return s1, s2
}
func TestSwitches(t *testing.T) {
s1, s2 := makeSwitchPair(t, func(sw *Switch) *Switch {
// Make two reactors of two channels each
sw.AddReactor("foo", NewTestReactor([]*ChannelDescriptor{
&ChannelDescriptor{Id: byte(0x00), Priority: 10},
&ChannelDescriptor{Id: byte(0x01), Priority: 10},
}, true)).Start(sw) // Start the reactor
sw.AddReactor("bar", NewTestReactor([]*ChannelDescriptor{
&ChannelDescriptor{Id: byte(0x02), Priority: 10},
&ChannelDescriptor{Id: byte(0x03), Priority: 10},
}, true)).Start(sw) // Start the reactor
return sw
})
defer s1.Stop()
defer s2.Stop()
// Lets send a message from s1 to s2.
if s1.Peers().Size() != 1 {
t.Errorf("Expected exactly 1 peer in s1, got %v", s1.Peers().Size())
}
if s2.Peers().Size() != 1 {
t.Errorf("Expected exactly 1 peer in s2, got %v", s2.Peers().Size())
}
ch0Msg := "channel zero"
ch1Msg := "channel foo"
ch2Msg := "channel bar"
s1.Broadcast(byte(0x00), ch0Msg)
s1.Broadcast(byte(0x01), ch1Msg)
s1.Broadcast(byte(0x02), ch2Msg)
// Wait for things to settle...
time.Sleep(5000 * time.Millisecond)
// Check message on ch0
ch0Msgs := s2.Reactor("foo").(*TestReactor).msgsReceived[byte(0x00)]
if len(ch0Msgs) != 1 {
t.Errorf("Expected to have received 1 message in ch0")
}
if !bytes.Equal(ch0Msgs[0].Bytes, binary.BinaryBytes(ch0Msg)) {
t.Errorf("Unexpected message bytes. Wanted: %X, Got: %X", binary.BinaryBytes(ch0Msg), ch0Msgs[0].Bytes)
}
// Check message on ch1
ch1Msgs := s2.Reactor("foo").(*TestReactor).msgsReceived[byte(0x01)]
if len(ch1Msgs) != 1 {
t.Errorf("Expected to have received 1 message in ch1")
}
if !bytes.Equal(ch1Msgs[0].Bytes, binary.BinaryBytes(ch1Msg)) {
t.Errorf("Unexpected message bytes. Wanted: %X, Got: %X", binary.BinaryBytes(ch1Msg), ch1Msgs[0].Bytes)
}
// Check message on ch2
ch2Msgs := s2.Reactor("bar").(*TestReactor).msgsReceived[byte(0x02)]
if len(ch2Msgs) != 1 {
t.Errorf("Expected to have received 1 message in ch2")
}
if !bytes.Equal(ch2Msgs[0].Bytes, binary.BinaryBytes(ch2Msg)) {
t.Errorf("Unexpected message bytes. Wanted: %X, Got: %X", binary.BinaryBytes(ch2Msg), ch2Msgs[0].Bytes)
}
}
func BenchmarkSwitches(b *testing.B) {
b.StopTimer()
s1, s2 := makeSwitchPair(b, func(sw *Switch) *Switch {
// Make bar reactors of bar channels each
sw.AddReactor("foo", NewTestReactor([]*ChannelDescriptor{
&ChannelDescriptor{Id: byte(0x00), Priority: 10},
&ChannelDescriptor{Id: byte(0x01), Priority: 10},
}, false))
sw.AddReactor("bar", NewTestReactor([]*ChannelDescriptor{
&ChannelDescriptor{Id: byte(0x02), Priority: 10},
&ChannelDescriptor{Id: byte(0x03), Priority: 10},
}, false))
return sw
})
defer s1.Stop()
defer s2.Stop()
// Allow time for goroutines to boot up
time.Sleep(1000 * time.Millisecond)
b.StartTimer()
numSuccess, numFailure := 0, 0
// Send random message from foo channel to another
for i := 0; i < b.N; i++ {
chId := byte(i % 4)
successChan := s1.Broadcast(chId, "test data")
for s := range successChan {
if s {
numSuccess += 1
} else {
numFailure += 1
}
}
}
log.Warn(Fmt("success: %v, failure: %v", numSuccess, numFailure))
// Allow everything to flush before stopping switches & closing connections.
b.StopTimer()
time.Sleep(1000 * time.Millisecond)
}