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3.4 KiB

package p2p
import (
"testing"
"time"
. "github.com/tendermint/tendermint/binary"
)
// convenience method for creating two switches connected to each other.
func makeSwitchPair(t testing.TB, bufferSize int, chNames []string) (*Switch, *Switch) {
chDescs := []ChannelDescriptor{}
for _, chName := range chNames {
chDescs = append(chDescs, ChannelDescriptor{
Name: chName,
SendBufferSize: bufferSize,
RecvBufferSize: bufferSize,
})
}
// Create two switches that will be interconnected.
s1 := NewSwitch(chDescs)
s2 := NewSwitch(chDescs)
// Create a listener for s1
l := NewDefaultListener("tcp", ":8001")
// 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 incoming connection from listener")
}
s1.AddPeerWithConnection(connIn, false)
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) {
channels := []string{"ch1", "ch2", "ch3", "ch4", "ch5", "ch6", "ch7", "ch8", "ch9", "ch0"}
s1, s2 := makeSwitchPair(t, 10, channels)
defer s1.Stop()
defer s2.Stop()
// Lets send a message from s1 to s2.
if len(s1.Peers()) != 1 {
t.Errorf("Expected exactly 1 peer in s1, got %v", len(s1.Peers()))
}
if len(s2.Peers()) != 1 {
t.Errorf("Expected exactly 1 peer in s2, got %v", len(s2.Peers()))
}
// Broadcast a message on ch1
s1.Broadcast(NewPacket("ch1", ByteSlice("channel one")))
// Broadcast a message on ch2
s1.Broadcast(NewPacket("ch2", ByteSlice("channel two")))
// Broadcast a message on ch3
s1.Broadcast(NewPacket("ch3", ByteSlice("channel three")))
// Wait for things to settle...
time.Sleep(100 * time.Millisecond)
// Receive message from channel 2 and check
inMsg := s2.Receive("ch2")
if string(inMsg.Bytes) != "channel two" {
t.Errorf("Unexpected received message bytes: %v", string(inMsg.Bytes))
}
// Receive message from channel 1 and check
inMsg = s2.Receive("ch1")
if string(inMsg.Bytes) != "channel one" {
t.Errorf("Unexpected received message bytes: %v", string(inMsg.Bytes))
}
}
func BenchmarkSwitches(b *testing.B) {
b.StopTimer()
channels := []string{"ch1", "ch2", "ch3", "ch4", "ch5", "ch6", "ch7", "ch8", "ch9", "ch0"}
s1, s2 := makeSwitchPair(b, 10, channels)
defer s1.Stop()
defer s2.Stop()
// Create a sink on either channel to just pop off messages.
recvHandler := func(c *Switch, chName string) {
for {
it := c.Receive(chName)
if it == nil {
break
}
}
}
for _, chName := range channels {
go recvHandler(s1, chName)
go recvHandler(s2, chName)
}
// Allow time for goroutines to boot up
time.Sleep(1000 * time.Millisecond)
b.StartTimer()
numSuccess, numFailure := 0, 0
// Send random message from one channel to another
for i := 0; i < b.N; i++ {
chName := channels[i%len(channels)]
pkt := NewPacket(String(chName), ByteSlice("test data"))
nS, nF := s1.Broadcast(pkt)
numSuccess += nS
numFailure += nF
}
log.Warnf("success: %v, failure: %v", numSuccess, numFailure)
// Allow everything to flush before stopping switches & closing connections.
b.StopTimer()
time.Sleep(1000 * time.Millisecond)
}