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543 lines
13 KiB
543 lines
13 KiB
package p2p
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"regexp"
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"strconv"
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"sync"
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"testing"
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"time"
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stdprometheus "github.com/prometheus/client_golang/prometheus"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/config"
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"github.com/tendermint/tendermint/crypto/ed25519"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/p2p/conn"
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)
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var (
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cfg *config.P2PConfig
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)
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func init() {
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cfg = config.DefaultP2PConfig()
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cfg.PexReactor = true
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cfg.AllowDuplicateIP = true
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}
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type PeerMessage struct {
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PeerID ID
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Bytes []byte
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Counter int
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}
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type TestReactor struct {
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BaseReactor
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mtx sync.Mutex
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channels []*conn.ChannelDescriptor
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logMessages bool
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msgsCounter int
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msgsReceived map[byte][]PeerMessage
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}
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func NewTestReactor(channels []*conn.ChannelDescriptor, logMessages bool) *TestReactor {
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tr := &TestReactor{
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channels: channels,
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logMessages: logMessages,
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msgsReceived: make(map[byte][]PeerMessage),
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}
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tr.BaseReactor = *NewBaseReactor("TestReactor", tr)
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tr.SetLogger(log.TestingLogger())
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return tr
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}
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func (tr *TestReactor) GetChannels() []*conn.ChannelDescriptor {
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return tr.channels
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}
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func (tr *TestReactor) AddPeer(peer Peer) {}
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func (tr *TestReactor) RemovePeer(peer Peer, reason interface{}) {}
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func (tr *TestReactor) Receive(chID byte, peer Peer, msgBytes []byte) {
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if tr.logMessages {
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tr.mtx.Lock()
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defer tr.mtx.Unlock()
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//fmt.Printf("Received: %X, %X\n", chID, msgBytes)
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tr.msgsReceived[chID] = append(tr.msgsReceived[chID], PeerMessage{peer.ID(), msgBytes, tr.msgsCounter})
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tr.msgsCounter++
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}
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}
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func (tr *TestReactor) getMsgs(chID byte) []PeerMessage {
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tr.mtx.Lock()
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defer tr.mtx.Unlock()
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return tr.msgsReceived[chID]
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}
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//-----------------------------------------------------------------------------
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// convenience method for creating two switches connected to each other.
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// XXX: note this uses net.Pipe and not a proper TCP conn
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func MakeSwitchPair(t testing.TB, initSwitch func(int, *Switch) *Switch) (*Switch, *Switch) {
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// Create two switches that will be interconnected.
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switches := MakeConnectedSwitches(cfg, 2, initSwitch, Connect2Switches)
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return switches[0], switches[1]
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}
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func initSwitchFunc(i int, sw *Switch) *Switch {
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sw.SetAddrBook(&addrBookMock{
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addrs: make(map[string]struct{}),
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ourAddrs: make(map[string]struct{})})
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// Make two reactors of two channels each
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sw.AddReactor("foo", NewTestReactor([]*conn.ChannelDescriptor{
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{ID: byte(0x00), Priority: 10},
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{ID: byte(0x01), Priority: 10},
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}, true))
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sw.AddReactor("bar", NewTestReactor([]*conn.ChannelDescriptor{
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{ID: byte(0x02), Priority: 10},
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{ID: byte(0x03), Priority: 10},
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}, true))
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return sw
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}
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func TestSwitches(t *testing.T) {
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s1, s2 := MakeSwitchPair(t, initSwitchFunc)
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defer s1.Stop()
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defer s2.Stop()
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if s1.Peers().Size() != 1 {
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t.Errorf("Expected exactly 1 peer in s1, got %v", s1.Peers().Size())
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}
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if s2.Peers().Size() != 1 {
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t.Errorf("Expected exactly 1 peer in s2, got %v", s2.Peers().Size())
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}
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// Lets send some messages
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ch0Msg := []byte("channel zero")
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ch1Msg := []byte("channel foo")
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ch2Msg := []byte("channel bar")
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s1.Broadcast(byte(0x00), ch0Msg)
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s1.Broadcast(byte(0x01), ch1Msg)
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s1.Broadcast(byte(0x02), ch2Msg)
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assertMsgReceivedWithTimeout(t, ch0Msg, byte(0x00), s2.Reactor("foo").(*TestReactor), 10*time.Millisecond, 5*time.Second)
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assertMsgReceivedWithTimeout(t, ch1Msg, byte(0x01), s2.Reactor("foo").(*TestReactor), 10*time.Millisecond, 5*time.Second)
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assertMsgReceivedWithTimeout(t, ch2Msg, byte(0x02), s2.Reactor("bar").(*TestReactor), 10*time.Millisecond, 5*time.Second)
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}
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func assertMsgReceivedWithTimeout(t *testing.T, msgBytes []byte, channel byte, reactor *TestReactor, checkPeriod, timeout time.Duration) {
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ticker := time.NewTicker(checkPeriod)
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for {
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select {
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case <-ticker.C:
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msgs := reactor.getMsgs(channel)
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if len(msgs) > 0 {
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if !bytes.Equal(msgs[0].Bytes, msgBytes) {
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t.Fatalf("Unexpected message bytes. Wanted: %X, Got: %X", msgBytes, msgs[0].Bytes)
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}
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return
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}
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case <-time.After(timeout):
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t.Fatalf("Expected to have received 1 message in channel #%v, got zero", channel)
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}
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}
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}
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func TestSwitchFiltersOutItself(t *testing.T) {
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s1 := MakeSwitch(cfg, 1, "127.0.0.1", "123.123.123", initSwitchFunc)
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// addr := s1.NodeInfo().NetAddress()
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// // add ourselves like we do in node.go#427
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// s1.addrBook.AddOurAddress(addr)
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// simulate s1 having a public IP by creating a remote peer with the same ID
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rp := &remotePeer{PrivKey: s1.nodeKey.PrivKey, Config: cfg}
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rp.Start()
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// addr should be rejected in addPeer based on the same ID
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err := s1.DialPeerWithAddress(rp.Addr(), false)
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if assert.Error(t, err) {
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if err, ok := err.(ErrRejected); ok {
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if !err.IsSelf() {
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t.Errorf("expected self to be rejected")
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}
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} else {
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t.Errorf("expected ErrRejected")
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}
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}
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assert.True(t, s1.addrBook.OurAddress(rp.Addr()))
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assert.False(t, s1.addrBook.HasAddress(rp.Addr()))
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rp.Stop()
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assertNoPeersAfterTimeout(t, s1, 100*time.Millisecond)
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}
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func TestSwitchPeerFilter(t *testing.T) {
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var (
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filters = []PeerFilterFunc{
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func(_ IPeerSet, _ Peer) error { return nil },
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func(_ IPeerSet, _ Peer) error { return fmt.Errorf("denied!") },
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func(_ IPeerSet, _ Peer) error { return nil },
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}
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sw = MakeSwitch(
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cfg,
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1,
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"testing",
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"123.123.123",
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initSwitchFunc,
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SwitchPeerFilters(filters...),
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)
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)
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defer sw.Stop()
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// simulate remote peer
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rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: cfg}
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rp.Start()
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defer rp.Stop()
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p, err := sw.transport.Dial(*rp.Addr(), peerConfig{
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chDescs: sw.chDescs,
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onPeerError: sw.StopPeerForError,
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reactorsByCh: sw.reactorsByCh,
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})
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if err != nil {
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t.Fatal(err)
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}
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err = sw.addPeer(p)
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if err, ok := err.(ErrRejected); ok {
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if !err.IsFiltered() {
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t.Errorf("expected peer to be filtered")
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}
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} else {
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t.Errorf("expected ErrRejected")
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}
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}
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func TestSwitchPeerFilterTimeout(t *testing.T) {
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var (
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filters = []PeerFilterFunc{
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func(_ IPeerSet, _ Peer) error {
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time.Sleep(10 * time.Millisecond)
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return nil
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},
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}
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sw = MakeSwitch(
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cfg,
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1,
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"testing",
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"123.123.123",
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initSwitchFunc,
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SwitchFilterTimeout(5*time.Millisecond),
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SwitchPeerFilters(filters...),
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)
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)
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defer sw.Stop()
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// simulate remote peer
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rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: cfg}
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rp.Start()
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defer rp.Stop()
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p, err := sw.transport.Dial(*rp.Addr(), peerConfig{
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chDescs: sw.chDescs,
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onPeerError: sw.StopPeerForError,
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reactorsByCh: sw.reactorsByCh,
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})
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if err != nil {
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t.Fatal(err)
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}
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err = sw.addPeer(p)
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if _, ok := err.(ErrFilterTimeout); !ok {
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t.Errorf("expected ErrFilterTimeout")
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}
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}
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func TestSwitchPeerFilterDuplicate(t *testing.T) {
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sw := MakeSwitch(cfg, 1, "testing", "123.123.123", initSwitchFunc)
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// simulate remote peer
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rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: cfg}
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rp.Start()
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defer rp.Stop()
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p, err := sw.transport.Dial(*rp.Addr(), peerConfig{
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chDescs: sw.chDescs,
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onPeerError: sw.StopPeerForError,
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reactorsByCh: sw.reactorsByCh,
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})
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if err != nil {
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t.Fatal(err)
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}
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if err := sw.addPeer(p); err != nil {
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t.Fatal(err)
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}
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err = sw.addPeer(p)
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if err, ok := err.(ErrRejected); ok {
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if !err.IsDuplicate() {
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t.Errorf("expected peer to be duplicate")
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}
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} else {
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t.Errorf("expected ErrRejected")
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}
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}
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func assertNoPeersAfterTimeout(t *testing.T, sw *Switch, timeout time.Duration) {
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time.Sleep(timeout)
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if sw.Peers().Size() != 0 {
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t.Fatalf("Expected %v to not connect to some peers, got %d", sw, sw.Peers().Size())
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}
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}
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func TestSwitchStopsNonPersistentPeerOnError(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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sw := MakeSwitch(cfg, 1, "testing", "123.123.123", initSwitchFunc)
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err := sw.Start()
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if err != nil {
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t.Error(err)
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}
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defer sw.Stop()
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// simulate remote peer
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rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: cfg}
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rp.Start()
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defer rp.Stop()
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p, err := sw.transport.Dial(*rp.Addr(), peerConfig{
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chDescs: sw.chDescs,
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onPeerError: sw.StopPeerForError,
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reactorsByCh: sw.reactorsByCh,
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})
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require.Nil(err)
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err = sw.addPeer(p)
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require.Nil(err)
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require.NotNil(sw.Peers().Get(rp.ID()))
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// simulate failure by closing connection
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p.(*peer).CloseConn()
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assertNoPeersAfterTimeout(t, sw, 100*time.Millisecond)
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assert.False(p.IsRunning())
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}
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func TestSwitchStopPeerForError(t *testing.T) {
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s := httptest.NewServer(stdprometheus.UninstrumentedHandler())
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defer s.Close()
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scrapeMetrics := func() string {
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resp, _ := http.Get(s.URL)
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buf, _ := ioutil.ReadAll(resp.Body)
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return string(buf)
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}
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namespace, subsystem, name := config.TestInstrumentationConfig().Namespace, MetricsSubsystem, "peers"
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re := regexp.MustCompile(namespace + `_` + subsystem + `_` + name + ` ([0-9\.]+)`)
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peersMetricValue := func() float64 {
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matches := re.FindStringSubmatch(scrapeMetrics())
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f, _ := strconv.ParseFloat(matches[1], 64)
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return f
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}
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p2pMetrics := PrometheusMetrics(namespace)
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// make two connected switches
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sw1, sw2 := MakeSwitchPair(t, func(i int, sw *Switch) *Switch {
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// set metrics on sw1
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if i == 0 {
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opt := WithMetrics(p2pMetrics)
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opt(sw)
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}
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return initSwitchFunc(i, sw)
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})
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assert.Equal(t, len(sw1.Peers().List()), 1)
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assert.EqualValues(t, 1, peersMetricValue())
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// send messages to the peer from sw1
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p := sw1.Peers().List()[0]
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p.Send(0x1, []byte("here's a message to send"))
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// stop sw2. this should cause the p to fail,
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// which results in calling StopPeerForError internally
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sw2.Stop()
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// now call StopPeerForError explicitly, eg. from a reactor
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sw1.StopPeerForError(p, fmt.Errorf("some err"))
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assert.Equal(t, len(sw1.Peers().List()), 0)
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assert.EqualValues(t, 0, peersMetricValue())
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}
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func TestSwitchReconnectsToPersistentPeer(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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sw := MakeSwitch(cfg, 1, "testing", "123.123.123", initSwitchFunc)
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err := sw.Start()
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if err != nil {
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t.Error(err)
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}
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defer sw.Stop()
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// simulate remote peer
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rp := &remotePeer{PrivKey: ed25519.GenPrivKey(), Config: cfg}
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rp.Start()
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defer rp.Stop()
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p, err := sw.transport.Dial(*rp.Addr(), peerConfig{
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chDescs: sw.chDescs,
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onPeerError: sw.StopPeerForError,
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persistent: true,
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reactorsByCh: sw.reactorsByCh,
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})
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require.Nil(err)
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require.Nil(sw.addPeer(p))
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require.NotNil(sw.Peers().Get(rp.ID()))
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// simulate failure by closing connection
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p.(*peer).CloseConn()
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// TODO: remove sleep, detect the disconnection, wait for reconnect
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npeers := sw.Peers().Size()
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for i := 0; i < 20; i++ {
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time.Sleep(250 * time.Millisecond)
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npeers = sw.Peers().Size()
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if npeers > 0 {
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break
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}
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}
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assert.NotZero(npeers)
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assert.False(p.IsRunning())
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// simulate another remote peer
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rp = &remotePeer{
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PrivKey: ed25519.GenPrivKey(),
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Config: cfg,
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// Use different interface to prevent duplicate IP filter, this will break
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// beyond two peers.
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listenAddr: "127.0.0.1:0",
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}
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rp.Start()
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defer rp.Stop()
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// simulate first time dial failure
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conf := config.DefaultP2PConfig()
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conf.TestDialFail = true
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err = sw.addOutboundPeerWithConfig(rp.Addr(), conf, true)
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require.NotNil(err)
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// DialPeerWithAddres - sw.peerConfig resets the dialer
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// TODO: same as above
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for i := 0; i < 20; i++ {
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time.Sleep(250 * time.Millisecond)
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npeers = sw.Peers().Size()
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if npeers > 1 {
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break
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}
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}
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assert.EqualValues(2, npeers)
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}
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func TestSwitchFullConnectivity(t *testing.T) {
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switches := MakeConnectedSwitches(cfg, 3, initSwitchFunc, Connect2Switches)
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defer func() {
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for _, sw := range switches {
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sw.Stop()
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}
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}()
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for i, sw := range switches {
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if sw.Peers().Size() != 2 {
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t.Fatalf("Expected each switch to be connected to 2 other, but %d switch only connected to %d", sw.Peers().Size(), i)
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}
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}
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}
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func BenchmarkSwitchBroadcast(b *testing.B) {
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s1, s2 := MakeSwitchPair(b, func(i int, sw *Switch) *Switch {
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// Make bar reactors of bar channels each
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sw.AddReactor("foo", NewTestReactor([]*conn.ChannelDescriptor{
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{ID: byte(0x00), Priority: 10},
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{ID: byte(0x01), Priority: 10},
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}, false))
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sw.AddReactor("bar", NewTestReactor([]*conn.ChannelDescriptor{
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{ID: byte(0x02), Priority: 10},
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{ID: byte(0x03), Priority: 10},
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}, false))
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return sw
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})
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defer s1.Stop()
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defer s2.Stop()
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// Allow time for goroutines to boot up
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time.Sleep(1 * time.Second)
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b.ResetTimer()
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numSuccess, numFailure := 0, 0
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// Send random message from foo channel to another
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for i := 0; i < b.N; i++ {
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chID := byte(i % 4)
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successChan := s1.Broadcast(chID, []byte("test data"))
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for s := range successChan {
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if s {
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numSuccess++
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} else {
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numFailure++
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}
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}
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}
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b.Logf("success: %v, failure: %v", numSuccess, numFailure)
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}
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type addrBookMock struct {
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addrs map[string]struct{}
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ourAddrs map[string]struct{}
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}
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|
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var _ AddrBook = (*addrBookMock)(nil)
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|
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func (book *addrBookMock) AddAddress(addr *NetAddress, src *NetAddress) error {
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book.addrs[addr.String()] = struct{}{}
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return nil
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}
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func (book *addrBookMock) AddOurAddress(addr *NetAddress) { book.ourAddrs[addr.String()] = struct{}{} }
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func (book *addrBookMock) OurAddress(addr *NetAddress) bool {
|
|
_, ok := book.ourAddrs[addr.String()]
|
|
return ok
|
|
}
|
|
func (book *addrBookMock) MarkGood(*NetAddress) {}
|
|
func (book *addrBookMock) HasAddress(addr *NetAddress) bool {
|
|
_, ok := book.addrs[addr.String()]
|
|
return ok
|
|
}
|
|
func (book *addrBookMock) RemoveAddress(addr *NetAddress) {
|
|
delete(book.addrs, addr.String())
|
|
}
|
|
func (book *addrBookMock) Save() {}
|