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fundingmanager_test.go
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2125 lines (1766 loc) · 67.9 KB
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// +build !rpctest
package main
import (
"fmt"
"io/ioutil"
"math/big"
"net"
"os"
"path/filepath"
"testing"
"time"
"github.com/btcsuite/btclog"
"github.com/lightningnetwork/lnd/chainntnfs"
"github.com/lightningnetwork/lnd/channeldb"
"github.com/lightningnetwork/lnd/contractcourt"
"github.com/lightningnetwork/lnd/htlcswitch"
"github.com/lightningnetwork/lnd/keychain"
"github.com/lightningnetwork/lnd/lnrpc"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/roasbeef/btcd/chaincfg"
"github.com/roasbeef/btcd/chaincfg/chainhash"
_ "github.com/roasbeef/btcwallet/walletdb/bdb"
"github.com/roasbeef/btcd/btcec"
"github.com/roasbeef/btcd/wire"
"github.com/roasbeef/btcutil"
)
const (
// testPollNumTries is the number of times we attempt to query
// for a certain expected database state before we give up and
// consider the test failed. Since it sometimes can take a
// while to update the database, we poll a certain amount of
// times, until it gets into the state we expect, or we are out
// of tries.
testPollNumTries = 10
// testPollSleepMs is the number of milliseconds to sleep between
// each attempt to access the database to check its state.
testPollSleepMs = 500
)
var (
privPass = []byte("dummy-pass")
// Use hard-coded keys for Alice and Bob, the two FundingManagers that
// we will test the interaction between.
alicePrivKeyBytes = [32]byte{
0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
}
alicePrivKey, alicePubKey = btcec.PrivKeyFromBytes(btcec.S256(),
alicePrivKeyBytes[:])
aliceTCPAddr, _ = net.ResolveTCPAddr("tcp", "10.0.0.2:9001")
aliceAddr = &lnwire.NetAddress{
IdentityKey: alicePubKey,
Address: aliceTCPAddr,
}
bobPrivKeyBytes = [32]byte{
0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
}
bobPrivKey, bobPubKey = btcec.PrivKeyFromBytes(btcec.S256(),
bobPrivKeyBytes[:])
bobTCPAddr, _ = net.ResolveTCPAddr("tcp", "10.0.0.2:9000")
bobAddr = &lnwire.NetAddress{
IdentityKey: bobPubKey,
Address: bobTCPAddr,
}
testSig = &btcec.Signature{
R: new(big.Int),
S: new(big.Int),
}
_, _ = testSig.R.SetString("63724406601629180062774974542967536251589935445068131219452686511677818569431", 10)
_, _ = testSig.S.SetString("18801056069249825825291287104931333862866033135609736119018462340006816851118", 10)
)
type mockNotifier struct {
oneConfChannel chan *chainntnfs.TxConfirmation
sixConfChannel chan *chainntnfs.TxConfirmation
epochChan chan *chainntnfs.BlockEpoch
}
func (m *mockNotifier) RegisterConfirmationsNtfn(txid *chainhash.Hash, numConfs,
heightHint uint32) (*chainntnfs.ConfirmationEvent, error) {
if numConfs == 6 {
return &chainntnfs.ConfirmationEvent{
Confirmed: m.sixConfChannel,
}, nil
}
return &chainntnfs.ConfirmationEvent{
Confirmed: m.oneConfChannel,
}, nil
}
func (m *mockNotifier) RegisterBlockEpochNtfn() (*chainntnfs.BlockEpochEvent, error) {
return &chainntnfs.BlockEpochEvent{
Epochs: m.epochChan,
Cancel: func() {},
}, nil
}
func (m *mockNotifier) Start() error {
return nil
}
func (m *mockNotifier) Stop() error {
return nil
}
func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint,
heightHint uint32, _ bool) (*chainntnfs.SpendEvent, error) {
return &chainntnfs.SpendEvent{
Spend: make(chan *chainntnfs.SpendDetail),
Cancel: func() {},
}, nil
}
type testNode struct {
privKey *btcec.PrivateKey
msgChan chan lnwire.Message
announceChan chan lnwire.Message
publTxChan chan *wire.MsgTx
fundingMgr *fundingManager
peer *peer
mockNotifier *mockNotifier
testDir string
shutdownChannel chan struct{}
}
func init() {
channeldb.UseLogger(btclog.Disabled)
lnwallet.UseLogger(btclog.Disabled)
contractcourt.UseLogger(btclog.Disabled)
fndgLog = btclog.Disabled
}
func createTestWallet(cdb *channeldb.DB, netParams *chaincfg.Params,
notifier chainntnfs.ChainNotifier, wc lnwallet.WalletController,
signer lnwallet.Signer, keyRing keychain.SecretKeyRing,
bio lnwallet.BlockChainIO,
estimator lnwallet.FeeEstimator) (*lnwallet.LightningWallet, error) {
wallet, err := lnwallet.NewLightningWallet(lnwallet.Config{
Database: cdb,
Notifier: notifier,
SecretKeyRing: keyRing,
WalletController: wc,
Signer: signer,
ChainIO: bio,
FeeEstimator: estimator,
NetParams: *netParams,
DefaultConstraints: defaultBtcChannelConstraints,
})
if err != nil {
return nil, err
}
if err := wallet.Startup(); err != nil {
return nil, err
}
return wallet, nil
}
func createTestFundingManager(t *testing.T, privKey *btcec.PrivateKey,
tempTestDir string) (*testNode, error) {
netParams := activeNetParams.Params
estimator := lnwallet.StaticFeeEstimator{FeeRate: 250}
chainNotifier := &mockNotifier{
oneConfChannel: make(chan *chainntnfs.TxConfirmation, 1),
sixConfChannel: make(chan *chainntnfs.TxConfirmation, 1),
epochChan: make(chan *chainntnfs.BlockEpoch, 1),
}
newChannelsChan := make(chan *newChannelMsg)
p := &peer{
newChannels: newChannelsChan,
}
sentMessages := make(chan lnwire.Message)
sentAnnouncements := make(chan lnwire.Message)
publTxChan := make(chan *wire.MsgTx, 1)
shutdownChan := make(chan struct{})
wc := &mockWalletController{
rootKey: alicePrivKey,
publishedTransactions: publTxChan,
}
signer := &mockSigner{
key: alicePrivKey,
}
bio := &mockChainIO{}
dbDir := filepath.Join(tempTestDir, "cdb")
cdb, err := channeldb.Open(dbDir)
if err != nil {
return nil, err
}
keyRing := &mockSecretKeyRing{
rootKey: alicePrivKey,
}
lnw, err := createTestWallet(
cdb, netParams, chainNotifier, wc, signer, keyRing, bio,
estimator,
)
if err != nil {
t.Fatalf("unable to create test ln wallet: %v", err)
}
var chanIDSeed [32]byte
f, err := newFundingManager(fundingConfig{
IDKey: privKey.PubKey(),
Wallet: lnw,
Notifier: chainNotifier,
FeeEstimator: estimator,
SignMessage: func(pubKey *btcec.PublicKey, msg []byte) (*btcec.Signature, error) {
return testSig, nil
},
SendAnnouncement: func(msg lnwire.Message) error {
select {
case sentAnnouncements <- msg:
case <-shutdownChan:
return fmt.Errorf("shutting down")
}
retu
F2A1
rn nil
},
CurrentNodeAnnouncement: func() (lnwire.NodeAnnouncement, error) {
return lnwire.NodeAnnouncement{}, nil
},
SendToPeer: func(target *btcec.PublicKey, msgs ...lnwire.Message) error {
select {
case sentMessages <- msgs[0]:
case <-shutdownChan:
return fmt.Errorf("shutting down")
}
return nil
},
NotifyWhenOnline: func(peer *btcec.PublicKey, connectedChan chan<- struct{}) {
t.Fatalf("did not expect fundingManager to call NotifyWhenOnline")
},
FindPeer: func(peerKey *btcec.PublicKey) (*peer, error) {
return p, nil
},
TempChanIDSeed: chanIDSeed,
FindChannel: func(chanID lnwire.ChannelID) (*lnwallet.LightningChannel, error) {
dbChannels, err := cdb.FetchAllChannels()
if err != nil {
return nil, err
}
for _, channel := range dbChannels {
if chanID.IsChanPoint(&channel.FundingOutpoint) {
return lnwallet.NewLightningChannel(
signer,
nil,
channel)
}
}
return nil, fmt.Errorf("unable to find channel")
},
DefaultRoutingPolicy: htlcswitch.ForwardingPolicy{
MinHTLC: 5,
BaseFee: 100,
FeeRate: 1000,
TimeLockDelta: 10,
},
NumRequiredConfs: func(chanAmt btcutil.Amount,
pushAmt lnwire.MilliSatoshi) uint16 {
return 3
},
RequiredRemoteDelay: func(amt btcutil.Amount) uint16 {
return 4
},
RequiredRemoteChanReserve: func(chanAmt,
dustLimit btcutil.Amount) btcutil.Amount {
reserve := chanAmt / 100
if reserve < dustLimit {
reserve = dustLimit
}
return reserve
},
RequiredRemoteMaxValue: func(chanAmt btcutil.Amount) lnwire.MilliSatoshi {
reserve := lnwire.NewMSatFromSatoshis(chanAmt / 100)
return lnwire.NewMSatFromSatoshis(chanAmt) - reserve
},
RequiredRemoteMaxHTLCs: func(chanAmt btcutil.Amount) uint16 {
return uint16(lnwallet.MaxHTLCNumber / 2)
},
WatchNewChannel: func(*channeldb.OpenChannel, *lnwire.NetAddress) error {
return nil
},
ReportShortChanID: func(wire.OutPoint) error {
return nil
},
ZombieSweeperInterval: 1 * time.Hour,
ReservationTimeout: 1 * time.Nanosecond,
})
if err != nil {
t.Fatalf("failed creating fundingManager: %v", err)
}
if err = f.Start(); err != nil {
t.Fatalf("failed starting fundingManager: %v", err)
}
return &testNode{
privKey: privKey,
msgChan: sentMessages,
announceChan: sentAnnouncements,
publTxChan: publTxChan,
fundingMgr: f,
peer: p,
mockNotifier: chainNotifier,
testDir: tempTestDir,
shutdownChannel: shutdownChan,
}, nil
}
func recreateAliceFundingManager(t *testing.T, alice *testNode) {
// Stop the old fundingManager before creating a new one.
close(alice.shutdownChannel)
if err := alice.fundingMgr.Stop(); err != nil {
t.Fatalf("unable to stop old fundingManager: %v", err)
}
aliceMsgChan := make(chan lnwire.Message)
aliceAnnounceChan := make(chan lnwire.Message)
shutdownChan := make(chan struct{})
publishChan := make(chan *wire.MsgTx, 10)
oldCfg := alice.fundingMgr.cfg
f, err := newFundingManager(fundingConfig{
IDKey: oldCfg.IDKey,
Wallet: oldCfg.Wallet,
Notifier: oldCfg.Notifier,
FeeEstimator: oldCfg.FeeEstimator,
SignMessage: func(pubKey *btcec.PublicKey,
msg []byte) (*btcec.Signature, error) {
return testSig, nil
},
SendAnnouncement: func(msg lnwire.Message) error {
select {
case aliceAnnounceChan <- msg:
case <-shutdownChan:
return fmt.Errorf("shutting down")
}
return nil
},
CurrentNodeAnnouncement: func() (lnwire.NodeAnnouncement, error) {
return lnwire.NodeAnnouncement{}, nil
},
SendToPeer: func(target *btcec.PublicKey,
msgs ...lnwire.Message) error {
select {
case aliceMsgChan <- msgs[0]:
case <-shutdownChan:
return fmt.Errorf("shutting down")
}
return nil
},
NotifyWhenOnline: func(peer *btcec.PublicKey, connectedChan chan<- struct{}) {
t.Fatalf("did not expect fundingManager to call NotifyWhenOnline")
},
FindPeer: oldCfg.FindPeer,
TempChanIDSeed: oldCfg.TempChanIDSeed,
FindChannel: oldCfg.FindChannel,
PublishTransaction: func(txn *wire.MsgTx) error {
publishChan <- txn
return nil
},
ZombieSweeperInterval: oldCfg.ZombieSweeperInterval,
ReservationTimeout: oldCfg.ReservationTimeout,
})
if err != nil {
t.Fatalf("failed recreating aliceFundingManager: %v", err)
}
alice.fundingMgr = f
alice.msgChan = aliceMsgChan
alice.announceChan = aliceAnnounceChan
alice.publTxChan = publishChan
alice.shutdownChannel = shutdownChan
if err = f.Start(); err != nil {
t.Fatalf("failed starting fundingManager: %v", err)
}
}
func setupFundingManagers(t *testing.T) (*testNode, *testNode) {
// We need to set the global config, as fundingManager uses
// MaxPendingChannels, and it is usually set in lndMain().
cfg = &config{
MaxPendingChannels: defaultMaxPendingChannels,
}
aliceTestDir, err := ioutil.TempDir("", "alicelnwallet")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
alice, err := createTestFundingManager(t, alicePrivKey, aliceTestDir)
if err != nil {
t.Fatalf("failed creating fundingManager: %v", err)
}
bobTestDir, err := ioutil.TempDir("", "boblnwallet")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
bob, err := createTestFundingManager(t, bobPrivKey, bobTestDir)
if err != nil {
t.Fatalf("failed creating fundingManager: %v", err)
}
return alice, bob
}
func tearDownFundingManagers(t *testing.T, a, b *testNode) {
close(a.shutdownChannel)
close(b.shutdownChannel)
if err := a.fundingMgr.Stop(); err != nil {
t.Fatalf("unable to stop fundingManager: %v", err)
}
if err := b.fundingMgr.Stop(); err != nil {
t.Fatalf("unable to stop fundingManager: %v", err)
}
os.RemoveAll(a.testDir)
os.RemoveAll(b.testDir)
}
// openChannel takes the funding process to the point where the funding
// transaction is confirmed on-chain. Returns the funding out point.
func openChannel(t *testing.T, alice, bob *testNode, localFundingAmt,
pushAmt btcutil.Amount, numConfs uint32,
updateChan chan *lnrpc.OpenStatusUpdate, announceChan bool) *wire.OutPoint {
// Create a funding request and start the workflow.
errChan := make(chan error, 1)
initReq := &openChanReq{
targetPubkey: bob.privKey.PubKey(),
chainHash: *activeNetParams.GenesisHash,
localFundingAmt: localFundingAmt,
pushAmt: lnwire.NewMSatFromSatoshis(pushAmt),
private: !announceChan,
updates: updateChan,
err: errChan,
}
alice.fundingMgr.initFundingWorkflow(bobAddr, initReq)
// Alice should have sent the OpenChannel message to Bob.
var aliceMsg lnwire.Message
select {
case aliceMsg = <-alice.msgChan:
case err := <-initReq.err:
t.Fatalf("error init funding workflow: %v", err)
case <-time.After(time.Second * 5):
t.Fatalf("alice did not send OpenChannel message")
}
openChannelReq, ok := aliceMsg.(*lnwire.OpenChannel)
if !ok {
errorMsg, gotError := aliceMsg.(*lnwire.Error)
if gotError {
t.Fatalf("expected OpenChannel to be sent "+
"from bob, instead got error: %v",
lnwire.ErrorCode(errorMsg.Data[0]))
}
t.Fatalf("expected OpenChannel to be sent from "+
"alice, instead got %T", aliceMsg)
}
// Let Bob handle the init message.
bob.fundingMgr.processFundingOpen(openChannelReq, aliceAddr)
// Bob should answer with an AcceptChannel message.
acceptChannelResponse := assertFundingMsgSent(
t, bob.msgChan, "AcceptChannel",
).(*lnwire.AcceptChannel)
// Forward the response to Alice.
alice.fundingMgr.processFundingAccept(acceptChannelResponse, bobAddr)
// Alice responds with a FundingCreated message.
fundingCreated := assertFundingMsgSent(
t, alice.msgChan, "FundingCreated",
).(*lnwire.FundingCreated)
// Give the message to Bob.
bob.fundingMgr.processFundingCreated(fundingCreated, aliceAddr)
// Finally, Bob should send the FundingSigned message.
fundingSigned := assertFundingMsgSent(
t, bob.msgChan, "FundingSigned",
).(*lnwire.FundingSigned)
// Forward the signature to Alice.
alice.fundingMgr.processFundingSigned(fundingSigned, bobAddr)
// After Alice processes the singleFundingSignComplete message, she will
// broadcast the funding transaction to the network. We expect to get a
// channel update saying the channel is pending.
var pendingUpdate *lnrpc.OpenStatusUpdate
select {
case pendingUpdate = <-updateChan:
case <-time.After(time.Second * 5):
t.Fatalf("alice did not send OpenStatusUpdate_ChanPending")
}
_, ok = pendingUpdate.Update.(*lnrpc.OpenStatusUpdate_ChanPending)
if !ok {
t.Fatal("OpenStatusUpdate was not OpenStatusUpdate_ChanPending")
}
// Get and return the transaction Alice published to the network.
var publ *wire.MsgTx
select {
case publ = <-alice.publTxChan:
case <-time.After(time.Second * 5):
t.Fatalf("alice did not publish funding tx")
}
fundingOutPoint := &wire.OutPoint{
Hash: publ.TxHash(),
Index: 0,
}
return fundingOutPoint
}
func assertErrorNotSent(t *testing.T, msgChan chan lnwire.Message) {
select {
case <-msgChan:
t.Fatalf("error sent unexpectedly")
case <-time.After(100 * time.Millisecond):
// Expected, return.
}
}
func assertErrorSent(t *testing.T, msgChan chan lnwire.Message) {
var msg lnwire.Message
select {
case msg = <-msgChan:
case <-time.After(time.Second * 5):
t.Fatalf("node did not send Error message")
}
_, ok := msg.(*lnwire.Error)
if !ok {
t.Fatalf("expected Error to be sent from "+
"node, instead got %T", msg)
}
}
func assertFundingMsgSent(t *testing.T, msgChan chan lnwire.Message,
msgType string) lnwire.Message {
var msg lnwire.Message
select {
case msg = <-msgChan:
case <-time.After(time.Second * 5):
t.Fatalf("peer did not send %s message", msgType)
}
var (
sentMsg lnwire.Message
ok bool
)
switch msgType {
case "AcceptChannel":
sentMsg, ok = msg.(*lnwire.AcceptChannel)
case "FundingCreated":
sentMsg, ok = msg.(*lnwire.FundingCreated)
case "FundingSigned":
sentMsg, ok = msg.(*lnwire.FundingSigned)
case "FundingLocked":
sentMsg, ok = msg.(*lnwire.FundingLocked)
default:
t.Fatalf("unknown message type: %s", msgType)
}
if !ok {
errorMsg, gotError := msg.(*lnwire.Error)
if gotError {
t.Fatalf("expected %s to be sent, instead got error: %v",
msgType, lnwire.ErrorCode(errorMsg.Data[0]))
}
t.Fatalf("expected %s to be sent, instead got %T",
msgType, msg)
}
return sentMsg
}
func assertNumPendingReservations(t *testing.T, node *testNode,
peerPubKey *btcec.PublicKey, expectedNum int) {
serializedPubKey := newSerializedKey(peerPubKey)
actualNum := len(node.fundingMgr.activeReservations[serializedPubKey])
if actualNum == expectedNum {
// Success, return.
return
}
t.Fatalf("Expected node to have %d pending reservations, had %v",
expectedNum, actualNum)
}
func assertNumPendingChannelsBecomes(t *testing.T, node *testNode, expectedNum int) {
var numPendingChans int
for i := 0; i < testPollNumTries; i++ {
// If this is not the first try, sleep before retrying.
if i > 0 {
time.Sleep(testPollSleepMs * time.Millisecond)
}
pendingChannels, err := node.fundingMgr.
cfg.Wallet.Cfg.Database.FetchPendingChannels()
if err != nil {
t.Fatalf("unable to fetch pending channels: %v", err)
}
numPendingChans = len(pendingChannels)
if numPendingChans == expectedNum {
// Success, return.
return
}
}
t.Fatalf("Expected node to have %d pending channels, had %v",
expectedNum, numPendingChans)
}
func assertNumPendingChannelsRemains(t *testing.T, node *testNode, expectedNum int) {
var numPendingChans int
for i := 0; i < 5; i++ {
// If this is not the first try, sleep before retrying.
if i > 0 {
time.Sleep(200 * time.Millisecond)
}
pendingChannels, err := node.fundingMgr.
cfg.Wallet.Cfg.Database.FetchPendingChannels()
if err != nil {
t.Fatalf("unable to fetch pending channels: %v", err)
}
numPendingChans = len(pendingChannels)
if numPendingChans != expectedNum {
t.Fatalf("Expected node to have %d pending channels, had %v",
expectedNum, numPendingChans)
}
}
}
func assertDatabaseState(t *testing.T, node *testNode,
fundingOutPoint *wire.OutPoint, expectedState channelOpeningState) {
var state channelOpeningState
var err error
for i := 0; i < testPollNumTries; i++ {
// If this is not the first try, sleep before retrying.
if i > 0 {
time.Sleep(testPollSleepMs * time.Millisecond)
}
state, _, err = node.fundingMgr.getChannelOpeningState(
fundingOutPoint)
if err != nil && err != ErrChannelNotFound {
t.Fatalf("unable to get channel state: %v", err)
}
// If we found the channel, check if it had the expected state.
if err != ErrChannelNotFound && state == expectedState {
// Got expected state, return with success.
return
}
}
// 10 tries without success.
if err != nil {
t.Fatalf("error getting channelOpeningState: %v", err)
} else {
t.Fatalf("expected state to be %v, was %v", expectedState,
state)
}
}
func assertMarkedOpen(t *testing.T, alice, bob *testNode,
fundingOutPoint *wire.OutPoint) {
assertDatabaseState(t, alice, fundingOutPoint, markedOpen)
assertDatabaseState(t, bob, fundingOutPoint, markedOpen)
}
func assertFundingLockedSent(t *testing.T, alice, bob *testNode,
fundingOutPoint *wire.OutPoint) {
assertDatabaseState(t, alice, fundingOutPoint, fundingLockedSent)
assertDatabaseState(t, bob, fundingOutPoint, fundingLockedSent)
}
func assertAddedToRouterGraph(t *testing.T, alice, bob *testNode,
fundingOutPoint *wire.OutPoint) {
assertDatabaseState(t, alice, fundingOutPoint, addedToRouterGraph)
assertDatabaseState(t, bob, fundingOutPoint, addedToRouterGraph)
}
func assertChannelAnnouncements(t *testing.T, alice, bob *testNode) {
// After the FundingLocked message is sent, Alice and Bob will each
// send the following messages to their gossiper:
// 1) ChannelAnnouncement
// 2) ChannelUpdate
// The ChannelAnnouncement is kept locally, while the ChannelUpdate
// is sent directly to the other peer, so the edge policies are
// known to both peers.
for j, node := range []*testNode{alice, bob} {
announcements := make([]lnwire.Message, 2)
for i := 0; i < len(announcements); i++ {
select {
case announcements[i] = <-node.announceChan:
case <-time.After(time.Second * 5):
t.Fatalf("node did not send announcement: %v", i)
}
}
gotChannelAnnouncement := false
gotChannelUpdate := false
for _, msg := range announcements {
switch msg.(type) {
case *lnwire.ChannelAnnouncement:
gotChannelAnnouncement = true
case *lnwire.ChannelUpdate:
gotChannelUpdate = true
}
}
if !gotChannelAnnouncement {
t.Fatalf("did not get ChannelAnnouncement from node %d",
j)
}
if !gotChannelUpdate {
t.Fatalf("did not get ChannelUpdate from node %d", j)
}
// Make sure no other message is sent.
select {
case <-node.announceChan:
t.Fatalf("received unexpected announcement")
case <-time.After(300 * time.Millisecond):
// Expected
}
}
}
func assertAnnouncementSignatures(t *testing.T, alice, bob *testNode) {
// After the FundingLocked message is sent and six confirmations have
// been reached, the channel will be announced to the greater network
// by having the nodes exchange announcement signatures.
// Two distinct messages will be sent:
// 1) AnnouncementSignatures
// 2) NodeAnnouncement
// These may arrive in no particular order.
// Note that sending the NodeAnnouncement at this point is an
// implementation detail, and not something required by the LN spec.
for j, node := range []*testNode{alice, bob} {
announcements := make([]lnwire.Message, 2)
for i := 0; i < len(announcements); i++ {
select {
case announcements[i] = <-node.announceChan:
case <-time.After(time.Second * 5):
t.Fatalf("node did not send announcement %v", i)
}
}
gotAnnounceSignatures := false
gotNodeAnnouncement := false
for _, msg := range announcements {
switch msg.(type) {
case *lnwire.AnnounceSignatures:
gotAnnounceSignatures = true
case *lnwire.NodeAnnouncement:
gotNodeAnnouncement = true
}
}
if !gotAnnounceSignatures {
t.Fatalf("did not get AnnounceSignatures from node %d",
j)
}
if !gotNodeAnnouncement {
t.Fatalf("did not get NodeAnnouncement from node %d", j)
}
}
}
func waitForOpenUpdate(t *testing.T, updateChan chan *lnrpc.OpenStatusUpdate) {
var openUpdate *lnrpc.OpenStatusUpdate
select {
case openUpdate = <-updateChan:
case <-time.After(time.Second * 5):
t.Fatalf("alice did not send OpenStatusUpdate")
}
_, ok := openUpdate.Update.(*lnrpc.OpenStatusUpdate_ChanOpen)
if !ok {
t.Fatal("OpenStatusUpdate was not OpenStatusUpdate_ChanOpen")
}
}
func assertNoChannelState(t *testing.T, alice, bob *testNode,
fundingOutPoint *wire.OutPoint) {
assertErrChannelNotFound(t, alice, fundingOutPoint)
assertErrChannelNotFound(t, bob, fundingOutPoint)
}
func assertErrChannelNotFound(t *testing.T, node *testNode,
fundingOutPoint *wire.OutPoint) {
var state channelOpeningState
var err error
for i := 0; i < testPollNumTries; i++ {
// If this is not the first try, sleep before retrying.
if i > 0 {
time.Sleep(testPollSleepMs * time.Millisecond)
}
state, _, err = node.fundingMgr.getChannelOpeningState(
fundingOutPoint)
if err == ErrChannelNotFound {
// Got expected state, return with success.
return
} else if err != nil {
t.Fatalf("unable to get channel state: %v", err)
}
}
// 10 tries without success.
t.Fatalf("expected to not find state, found state %v", state)
}
func assertHandleFundingLocked(t *testing.T, alice, bob *testNode) {
// They should both send the new channel state to their peer.
select {
case c := <-alice.peer.newChannels:
close(c.done)
case <-time.After(time.Second * 15):
t.Fatalf("alice did not send new channel to peer")
}
select {
case c := <-bob.peer.newChannels:
close(c.done)
case <-time.After(time.Second * 15):
t.Fatalf("bob did not send new channel to peer")
}
}
func TestFundingManagerNormalWorkflow(t *testing.T) {
alice, bob := setupFundingManagers(t)
defer tearDownFundingManagers(t, alice, bob)
// We will consume the channel updates as we go, so no buffering is needed.
updateChan := make(chan *lnrpc.OpenStatusUpdate)
// Run through the process of opening the channel, up until the funding
// transaction is broadcasted.
fundingOutPoint := openChannel(t, alice, bob, 500000, 0, 1, updateChan,
true)
// Make sure both reservations time out and then run both zombie sweepers.
time.Sleep(1 * time.Millisecond)
go alice.fundingMgr.pruneZombieReservations()
go bob.fundingMgr.pruneZombieReservations()
// Check that neither Alice nor Bob sent an error message.
assertErrorNotSent(t, alice.msgChan)
assertErrorNotSent(t, bob.msgChan)
// Check that neither reservation has been pruned.
assertNumPendingReservations(t, alice, bobPubKey, 1)
assertNumPendingReservations(t, bob, alicePubKey, 1)
// Notify that transaction was mined.
alice.mockNotifier.oneConfChannel <- &chainntnfs.TxConfirmation{}
bob.mockNotifier.oneConfChannel <- &chainntnfs.TxConfirmation{}
// The funding transaction was mined, so assert that both funding
// managers now have the state of this channel 'markedOpen' in their
// internal state machine.
assertMarkedOpen(t, alice, bob, fundingOutPoint)
// After the funding transaction is mined, Alice will send
// fundingLocked to Bob.
fundingLockedAlice := assertFundingMsgSent(
t, alice.msgChan, "FundingLocked",
).(*lnwire.FundingLocked)
// And similarly Bob will send funding locked to Alice.
fundingLockedBob := assertFundingMsgSent(
t, bob.msgChan, "FundingLocked",
).(*lnwire.FundingLocked)
// Check that the state machine is updated accordingly
assertFundingLockedSent(t, alice, bob, fundingOutPoint)
// Make sure both fundingManagers send the expected channel
// announcements.
assertChannelAnnouncements(t, alice, bob)
// Check that the state machine is updated accordingly
assertAddedToRouterGraph(t, alice, bob, fundingOutPoint)
// The funding transaction is now confirmed, wait for the
// OpenStatusUpdate_ChanOpen update
waitForOpenUpdate(t, updateChan)
// Exchange the fundingLocked messages.
alice.fundingMgr.processFundingLocked(fundingLockedBob, bobAddr)
bob.fundingMgr.processFundingLocked(fundingLockedAlice, aliceAddr)
// Check that they notify the breach arbiter and peer about the new
// channel.
assertHandleFundingLocked(t, alice, bob)
// Notify that six confirmations has been reached on funding transaction.
alice.mockNotifier.sixConfChannel <- &chainntnfs.TxConfirmation{}
bob.mockNotifier.sixConfChannel <- &chainntnfs.TxConfirmation{}
// Make sure the fundingManagers exchange announcement signatures.
assertAnnouncementSignatures(t, alice, bob)
// The internal state-machine should now have deleted the channelStates
// from the database, as the channel is announced.
assertNoChannelState(t, alice, bob, fundingOutPoint)
}
func TestFundingManagerRestartBehavior(t *testing.T) {
alice, bob := setupFundingManagers(t)
defer tearDownFundingManagers(t, alice, bob)
// Run through the process of opening the channel, up until the funding
// transaction is broadcasted.
updateChan := make(chan *lnrpc.OpenStatusUpdate)
fundingOutPoint := openChannel(t, alice, bob, 500000, 0, 1, updateChan,
true)
// After the funding transaction gets mined, both nodes will send the
// fundingLocked message to the other peer. If the funding node fails
// before this message has been successfully sent, it should retry
// sending it on restart. We mimic this behavior by letting the
// SendToPeer method return an error, as if the message was not
// successfully sent. We then recreate the fundingManager and make sure
// it continues the process as expected.
alice.fundingMgr.cfg.SendToPeer = func(target *btcec.PublicKey,
msgs ...lnwire.Message) error {
return fmt.Errorf("intentional error in SendToPeer")
}
alice.fundingMgr.cfg.NotifyWhenOnline = func(peer *btcec.PublicKey, con chan<- struct{}) {
// Intentionally empty.
}
// Notify that transaction was mined
alice.mockNotifier.oneConfChannel <- &chainntnfs.TxConfirmation{}
bob.mockNotifier.oneConfChannel <- &chainntnfs.TxConfirmation{}
// The funding transaction was mined, so assert that both funding
// managers now have the state of this channel 'markedOpen' in their
// internal state machine.
assertMarkedOpen(t, alice, bob, fundingOutPoint)
// After the funding transaction was mined, Bob should have successfully
// sent the fundingLocked message, while Alice failed sending it. In
// Alice's case this means that there should be no messages for Bob, and
// the channel should still be in state 'markedOpen'
select {
case msg := <-alice.msgChan:
t.Fatalf("did not expect any message from Alice: %v", msg)
default:
// Expected.
}