4c52b6e6a4
Add usage of the 'discovery' package in the lnd, now discovery service will be handle all lnwire announcement messages and send them to the remote party.
688 lines
19 KiB
Go
688 lines
19 KiB
Go
package routing
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import (
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"fmt"
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"image/color"
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"net"
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"sync"
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"testing"
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"time"
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prand "math/rand"
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"github.com/lightningnetwork/lnd/chainntnfs"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/roasbeef/btcd/btcec"
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"github.com/roasbeef/btcd/chaincfg/chainhash"
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"github.com/roasbeef/btcd/wire"
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"github.com/roasbeef/btcutil"
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)
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var (
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testAddr = &net.TCPAddr{IP: (net.IP)([]byte{0xA, 0x0, 0x0, 0x1}),
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Port: 9000}
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testAddrs = []net.Addr{testAddr}
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testFeatures = lnwire.NewFeatureVector([]lnwire.Feature{})
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testHash = [32]byte{
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0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
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0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
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0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
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0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
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}
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)
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func createGraphNode() (*channeldb.LightningNode, error) {
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updateTime := prand.Int63()
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priv, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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return nil, err
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}
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pub := priv.PubKey().SerializeCompressed()
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return &channeldb.LightningNode{
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LastUpdate: time.Unix(updateTime, 0),
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Addresses: testAddrs,
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PubKey: priv.PubKey(),
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Color: color.RGBA{1, 2, 3, 0},
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Alias: "kek" + string(pub[:]),
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Features: testFeatures,
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}, nil
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}
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func createTestNode() (*channeldb.LightningNode, error) {
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priv, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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return nil, err
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}
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pub := priv.PubKey().SerializeCompressed()
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alias, err := lnwire.NewAlias("kek" + string(pub[:]))
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if err != nil {
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return nil, err
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}
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return &channeldb.LightningNode{
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LastUpdate: time.Now(),
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Addresses: testAddrs,
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PubKey: priv.PubKey(),
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Alias: alias.String(),
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Features: testFeatures,
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}, nil
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}
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func randEdgePolicy(chanID lnwire.ChannelID,
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node *channeldb.LightningNode) *channeldb.ChannelEdgePolicy {
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return &channeldb.ChannelEdgePolicy{
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ChannelID: chanID.ToUint64(),
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LastUpdate: time.Unix(int64(prand.Int31()), 0),
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TimeLockDelta: uint16(prand.Int63()),
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MinHTLC: btcutil.Amount(prand.Int31()),
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FeeBaseMSat: btcutil.Amount(prand.Int31()),
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FeeProportionalMillionths: btcutil.Amount(prand.Int31()),
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Node: node,
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}
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}
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func randChannelEdge(ctx *testCtx, chanValue btcutil.Amount,
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fundingHeight uint32) (*wire.MsgTx, wire.OutPoint, lnwire.ChannelID) {
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fundingTx := wire.NewMsgTx(2)
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fundingTx.TxOut = append(fundingTx.TxOut, &wire.TxOut{
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Value: int64(chanValue),
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})
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chanUtxo := wire.OutPoint{
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Hash: fundingTx.TxHash(),
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Index: 0,
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}
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// With the utxo constructed, we'll mark it as closed.
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ctx.chain.addUtxo(chanUtxo, chanValue)
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// Our fake channel will be "confirmed" at height 101.
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chanID := lnwire.ChannelID{
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BlockHeight: fundingHeight,
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TxIndex: 0,
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TxPosition: 0,
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}
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return fundingTx, chanUtxo, chanID
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}
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type mockChain struct {
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blocks map[chainhash.Hash]*wire.MsgBlock
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blockIndex map[uint32]chainhash.Hash
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utxos map[wire.OutPoint]wire.TxOut
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bestHeight int32
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bestHash *chainhash.Hash
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sync.RWMutex
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}
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func newMockChain(currentHeight uint32) *mockChain {
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return &mockChain{
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bestHeight: int32(currentHeight),
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blocks: make(map[chainhash.Hash]*wire.MsgBlock),
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utxos: make(map[wire.OutPoint]wire.TxOut),
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blockIndex: make(map[uint32]chainhash.Hash),
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}
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}
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func (m *mockChain) setBestBlock(height int32) {
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m.Lock()
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defer m.Unlock()
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m.bestHeight = height
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}
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func (m *mockChain) GetBestBlock() (*chainhash.Hash, int32, error) {
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m.RLock()
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defer m.RUnlock()
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return nil, m.bestHeight, nil
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}
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func (m *mockChain) GetTransaction(txid *chainhash.Hash) (*wire.MsgTx, error) {
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return nil, nil
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}
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func (m *mockChain) GetBlockHash(blockHeight int64) (*chainhash.Hash, error) {
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m.RLock()
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defer m.RUnlock()
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hash, ok := m.blockIndex[uint32(blockHeight)]
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if !ok {
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return nil, fmt.Errorf("can't find block hash, for "+
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"height %v", blockHeight)
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}
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return &hash, nil
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}
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func (m *mockChain) addUtxo(op wire.OutPoint, value btcutil.Amount) {
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m.Lock()
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m.utxos[op] = wire.TxOut{
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Value: int64(value),
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}
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m.Unlock()
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}
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func (m *mockChain) GetUtxo(txid *chainhash.Hash, index uint32) (*wire.TxOut, error) {
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m.RLock()
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defer m.RUnlock()
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op := wire.OutPoint{
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Hash: *txid,
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Index: index,
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}
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utxo, ok := m.utxos[op]
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if !ok {
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return nil, fmt.Errorf("utxo not found")
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}
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return &utxo, nil
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}
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func (m *mockChain) addBlock(block *wire.MsgBlock, height uint32) {
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m.Lock()
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block.Header.Nonce = height
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hash := block.Header.BlockHash()
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m.blocks[hash] = block
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m.blockIndex[height] = hash
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m.Unlock()
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}
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func (m *mockChain) GetBlock(blockHash *chainhash.Hash) (*wire.MsgBlock, error) {
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m.RLock()
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defer m.RUnlock()
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block, ok := m.blocks[*blockHash]
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if !ok {
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return nil, fmt.Errorf("block not found")
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}
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return block, nil
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}
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type mockNotifier struct {
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clientCounter uint32
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epochClients map[uint32]chan *chainntnfs.BlockEpoch
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sync.RWMutex
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}
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func newMockNotifier() *mockNotifier {
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return &mockNotifier{
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epochClients: make(map[uint32]chan *chainntnfs.BlockEpoch),
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}
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}
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func (m *mockNotifier) RegisterConfirmationsNtfn(txid *chainhash.Hash,
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numConfs uint32) (*chainntnfs.ConfirmationEvent, error) {
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return nil, nil
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}
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func (m *mockNotifier) RegisterSpendNtfn(outpoint *wire.OutPoint) (*chainntnfs.SpendEvent, error) {
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return nil, nil
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}
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func (m *mockNotifier) notifyBlock(hash chainhash.Hash, height uint32) {
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m.RLock()
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defer m.RUnlock()
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for _, client := range m.epochClients {
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client <- &chainntnfs.BlockEpoch{
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Height: int32(height),
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Hash: &hash,
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}
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}
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}
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func (m *mockNotifier) RegisterBlockEpochNtfn() (*chainntnfs.BlockEpochEvent, error) {
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m.RLock()
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defer m.RUnlock()
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epochChan := make(chan *chainntnfs.BlockEpoch)
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clientID := m.clientCounter
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m.clientCounter++
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m.epochClients[clientID] = epochChan
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return &chainntnfs.BlockEpochEvent{
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Epochs: epochChan,
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Cancel: func() {},
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}, nil
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}
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func (m *mockNotifier) Start() error {
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return nil
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}
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func (m *mockNotifier) Stop() error {
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return nil
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}
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// TestEdgeUpdateNotification tests that when edges are updated or added,
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// a proper notification is sent of to all registered clients.
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func TestEdgeUpdateNotification(t *testing.T) {
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const startingBlockHeight = 101
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ctx, cleanUp, err := createTestCtx(startingBlockHeight)
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defer cleanUp()
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if err != nil {
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t.Fatalf("unable to create router: %v", err)
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}
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// First we'll create the utxo for the channel to be "closed"
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const chanValue = btcutil.Amount(10000)
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fundingTx, chanPoint, chanID := randChannelEdge(ctx, chanValue,
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startingBlockHeight)
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// We'll also add a record for the block that included our funding
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// transaction.
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fundingBlock := &wire.MsgBlock{
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Transactions: []*wire.MsgTx{fundingTx},
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}
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ctx.chain.addBlock(fundingBlock, chanID.BlockHeight)
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// Next we'll create two test nodes that the fake channel will be open
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// between and add then as members of the channel graph.
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node1, err := createTestNode()
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if err != nil {
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t.Fatalf("unable to create test node: %v", err)
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}
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node2, err := createTestNode()
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if err != nil {
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t.Fatalf("unable to create test node: %v", err)
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}
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// Send the two node topology updates to the channel router so they
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// can be validated and stored within the graph database.
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if err := ctx.router.AddNode(node1); err != nil {
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t.Fatal(err)
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}
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if err := ctx.router.AddNode(node2); err != nil {
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t.Fatal(err)
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}
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// Finally, to conclude our test set up, we'll create a channel
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// update to announce the created channel between the two nodes.
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edge := &channeldb.ChannelEdgeInfo{
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ChannelID: chanID.ToUint64(),
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NodeKey1: node1.PubKey,
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NodeKey2: node2.PubKey,
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BitcoinKey1: node1.PubKey,
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BitcoinKey2: node2.PubKey,
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AuthProof: &channeldb.ChannelAuthProof{
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NodeSig1: testSig,
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NodeSig2: testSig,
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BitcoinSig1: testSig,
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BitcoinSig2: testSig,
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},
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}
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if err := ctx.router.AddEdge(edge); err != nil {
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t.Fatal(err)
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}
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// With the channel edge now in place, we'll subscribe for topology
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// notifications.
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ntfnClient, err := ctx.router.SubscribeTopology()
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if err != nil {
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t.Fatalf("unable to subscribe for channel notifications: %v", err)
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}
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// Create random policy edges that are stemmed to the channel id
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// created above.
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edge1 := randEdgePolicy(chanID, node1)
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edge1.Flags = 0
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edge2 := randEdgePolicy(chanID, node2)
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edge2.Flags = 1
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if err := ctx.router.UpdateEdge(edge1); err != nil {
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t.Fatalf("unable to add edge update: %v", err)
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}
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if err := ctx.router.UpdateEdge(edge2); err != nil {
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t.Fatalf("unable to add edge update: %v", err)
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}
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assertEdgeCorrect := func(t *testing.T, edgeUpdate *ChannelEdgeUpdate,
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edgeAnn *channeldb.ChannelEdgePolicy) {
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if edgeUpdate.ChanID != edgeAnn.ChannelID {
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t.Fatalf("channel ID of edge doesn't match: "+
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"expected %v, got %v", chanID.ToUint64(), edgeUpdate.ChanID)
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}
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if edgeUpdate.ChanPoint != chanPoint {
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t.Fatalf("channel don't match: expected %v, got %v",
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chanPoint, edgeUpdate.ChanPoint)
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}
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// TODO(roasbeef): this is a hack, needs to be removed
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// after commitment fees are dynamic.
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if edgeUpdate.Capacity != chanValue-5000 {
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t.Fatalf("capacity of edge doesn't match: "+
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"expected %v, got %v", chanValue, edgeUpdate.Capacity)
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}
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if edgeUpdate.MinHTLC != btcutil.Amount(edgeAnn.MinHTLC) {
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t.Fatalf("min HTLC of edge doesn't match: "+
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"expected %v, got %v", btcutil.Amount(edgeAnn.MinHTLC),
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edgeUpdate.MinHTLC)
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}
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if edgeUpdate.BaseFee != btcutil.Amount(edgeAnn.FeeBaseMSat) {
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t.Fatalf("base fee of edge doesn't match: "+
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"expected %v, got %v", edgeAnn.FeeBaseMSat,
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edgeUpdate.BaseFee)
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}
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if edgeUpdate.FeeRate != btcutil.Amount(edgeAnn.FeeProportionalMillionths) {
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t.Fatalf("fee rate of edge doesn't match: "+
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"expected %v, got %v", edgeAnn.FeeProportionalMillionths,
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edgeUpdate.FeeRate)
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}
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if edgeUpdate.TimeLockDelta != edgeAnn.TimeLockDelta {
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t.Fatalf("time lock delta of edge doesn't match: "+
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"expected %v, got %v", edgeAnn.TimeLockDelta,
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edgeUpdate.TimeLockDelta)
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}
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}
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const numEdgePolicies = 2
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for i := 0; i < numEdgePolicies; i++ {
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select {
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case ntfn := <-ntfnClient.TopologyChanges:
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edgeUpdate := ntfn.ChannelEdgeUpdates[0]
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if i == 0 {
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assertEdgeCorrect(t, edgeUpdate, edge1)
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if !edgeUpdate.AdvertisingNode.IsEqual(node1.PubKey) {
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t.Fatal("advertising node mismatch")
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}
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if !edgeUpdate.ConnectingNode.IsEqual(node2.PubKey) {
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t.Fatal("connecting node mismatch")
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}
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continue
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}
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assertEdgeCorrect(t, edgeUpdate, edge2)
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if !edgeUpdate.ConnectingNode.IsEqual(node1.PubKey) {
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t.Fatal("connecting node mismatch")
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}
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if !edgeUpdate.AdvertisingNode.IsEqual(node2.PubKey) {
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t.Fatal("advertising node mismatch")
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}
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case <-time.After(time.Second * 5):
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t.Fatal("update not received")
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}
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}
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}
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// TestNodeUpdateNotification tests that notifications are sent out when nodes
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// either join the network for the first time, or update their authenticated
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// attributes with new data.
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func TestNodeUpdateNotification(t *testing.T) {
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ctx, cleanUp, err := createTestCtx(1)
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defer cleanUp()
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if err != nil {
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t.Fatalf("unable to create router: %v", err)
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}
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// Create a new client to receive notifications.
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ntfnClient, err := ctx.router.SubscribeTopology()
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if err != nil {
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t.Fatalf("unable to subscribe for channel notifications: %v", err)
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}
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// Create two random nodes to add to send as node announcement messages
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// to trigger notifications.
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node1, err := createTestNode()
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if err != nil {
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t.Fatalf("unable to create test node: %v", err)
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}
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node2, err := createTestNode()
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if err != nil {
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t.Fatalf("unable to create test node: %v", err)
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}
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// Change network topology by adding nodes to the channel router.
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if err := ctx.router.AddNode(node1); err != nil {
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t.Fatalf("unable to add node: %v", err)
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}
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if err := ctx.router.AddNode(node2); err != nil {
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t.Fatalf("unable to add node: %v", err)
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}
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assertNodeNtfnCorrect := func(t *testing.T, ann *channeldb.LightningNode,
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ntfns []*NetworkNodeUpdate) {
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// For each processed announcement we should only receive a
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// single announcement in a batch.
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if len(ntfns) != 1 {
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t.Fatalf("expected 1 notification, instead have %v",
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len(ntfns))
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}
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// The notification received should directly map the
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// announcement originally sent.
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nodeNtfn := ntfns[0]
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if nodeNtfn.Addresses[0] != ann.Addresses[0] {
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t.Fatalf("node address doesn't match: expected %v, got %v",
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nodeNtfn.Addresses[0], ann.Addresses[0])
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}
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if !nodeNtfn.IdentityKey.IsEqual(ann.PubKey) {
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t.Fatalf("node identity keys don't match: expected %x, "+
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"got %x", ann.PubKey.SerializeCompressed(),
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nodeNtfn.IdentityKey.SerializeCompressed())
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}
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if nodeNtfn.Alias != ann.Alias {
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t.Fatalf("node alias doesn't match: expected %v, got %v",
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ann.Alias, nodeNtfn.Alias)
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}
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}
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// Exactly two notifications should be sent, each corresponding to the
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// node announcement messages sent above.
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const numAnns = 2
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for i := 0; i < numAnns; i++ {
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select {
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case ntfn := <-ntfnClient.TopologyChanges:
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if i == 0 {
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assertNodeNtfnCorrect(t, node1, ntfn.NodeUpdates)
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continue
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}
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assertNodeNtfnCorrect(t, node2, ntfn.NodeUpdates)
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case <-time.After(time.Second * 5):
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}
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}
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// If we receive a new update from a node (with a higher timestamp),
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// then it should trigger a new notification.
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// TODO(roasbeef): assume monotonic time.
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nodeUpdateAnn := *node1
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nodeUpdateAnn.LastUpdate = node1.LastUpdate.Add(300 * time.Millisecond)
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// Add new node topology update to the channel router.
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if err := ctx.router.AddNode(&nodeUpdateAnn); err != nil {
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t.Fatalf("unable to add node: %v", err)
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}
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// Once again a notification should be received reflecting the up to
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// date node announcement.
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select {
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case ntfn := <-ntfnClient.TopologyChanges:
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assertNodeNtfnCorrect(t, &nodeUpdateAnn, ntfn.NodeUpdates)
|
|
case <-time.After(time.Second * 5):
|
|
}
|
|
}
|
|
|
|
// TestNotificationCancellation tests that notifications are properly cancelled
|
|
// when the client wishes to exit.
|
|
func TestNotificationCancellation(t *testing.T) {
|
|
const startingBlockHeight = 101
|
|
ctx, cleanUp, err := createTestCtx(startingBlockHeight)
|
|
defer cleanUp()
|
|
if err != nil {
|
|
t.Fatalf("unable to create router: %v", err)
|
|
}
|
|
|
|
// Create a new client to receive notifications.
|
|
ntfnClient, err := ctx.router.SubscribeTopology()
|
|
if err != nil {
|
|
t.Fatalf("unable to subscribe for channel notifications: %v", err)
|
|
}
|
|
|
|
// We'll create a fresh new node topology update to feed to the channel
|
|
// router.
|
|
node, err := createTestNode()
|
|
if err != nil {
|
|
t.Fatalf("unable to create test node: %v", err)
|
|
}
|
|
|
|
// Before we send the message to the channel router, we'll cancel the
|
|
// notifications for this client. As a result, the notification
|
|
// triggered by accepting this announcement shouldn't be sent to the
|
|
// client.
|
|
ntfnClient.Cancel()
|
|
|
|
if err := ctx.router.AddNode(node); err != nil {
|
|
t.Fatalf("unable to add node: %v", err)
|
|
}
|
|
|
|
select {
|
|
// The notification shouldn't be sent, however, the channel should be
|
|
// closed, causing the second read-value to be false.
|
|
case _, ok := <-ntfnClient.TopologyChanges:
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
t.Fatal("notification sent but shouldn't have been")
|
|
|
|
case <-time.After(time.Second * 5):
|
|
t.Fatal("notification client never cancelled")
|
|
}
|
|
}
|
|
|
|
// TestChannelCloseNotification tests that channel closure notifications are
|
|
// properly dispatched to all registered clients.
|
|
func TestChannelCloseNotification(t *testing.T) {
|
|
const startingBlockHeight = 101
|
|
ctx, cleanUp, err := createTestCtx(startingBlockHeight)
|
|
defer cleanUp()
|
|
if err != nil {
|
|
t.Fatalf("unable to create router: %v", err)
|
|
}
|
|
|
|
// First we'll create the utxo for the channel to be "closed"
|
|
const chanValue = btcutil.Amount(10000)
|
|
fundingTx, chanUtxo, chanID := randChannelEdge(ctx, chanValue,
|
|
startingBlockHeight)
|
|
|
|
// We'll also add a record for the block that included our funding
|
|
// transaction.
|
|
fundingBlock := &wire.MsgBlock{
|
|
Transactions: []*wire.MsgTx{fundingTx},
|
|
}
|
|
ctx.chain.addBlock(fundingBlock, chanID.BlockHeight)
|
|
|
|
// Next we'll create two test nodes that the fake channel will be open
|
|
// between and add then as members of the channel graph.
|
|
node1, err := createTestNode()
|
|
if err != nil {
|
|
t.Fatalf("unable to create test node: %v", err)
|
|
}
|
|
node2, err := createTestNode()
|
|
if err != nil {
|
|
t.Fatalf("unable to create test node: %v", err)
|
|
}
|
|
|
|
// Finally, to conclude our test set up, we'll create a channel
|
|
// announcement to announce the created channel between the two nodes.
|
|
edge := &channeldb.ChannelEdgeInfo{
|
|
ChannelID: chanID.ToUint64(),
|
|
NodeKey1: node1.PubKey,
|
|
NodeKey2: node2.PubKey,
|
|
BitcoinKey1: node1.PubKey,
|
|
BitcoinKey2: node2.PubKey,
|
|
AuthProof: &channeldb.ChannelAuthProof{
|
|
NodeSig1: testSig,
|
|
NodeSig2: testSig,
|
|
BitcoinSig1: testSig,
|
|
BitcoinSig2: testSig,
|
|
},
|
|
}
|
|
if err := ctx.router.AddEdge(edge); err != nil {
|
|
t.Fatalf("unable to add edge: %v", err)
|
|
}
|
|
|
|
// With the channel edge now in place, we'll subscribe for topology
|
|
// notifications.
|
|
ntfnClient, err := ctx.router.SubscribeTopology()
|
|
if err != nil {
|
|
t.Fatalf("unable to subscribe for channel notifications: %v", err)
|
|
}
|
|
|
|
// Next, we'll simulate the closure of our channel by generating a new
|
|
// block at height 102 which spends the original multi-sig output of
|
|
// the channel.
|
|
blockHeight := uint32(102)
|
|
newBlock := &wire.MsgBlock{
|
|
Transactions: []*wire.MsgTx{
|
|
{
|
|
TxIn: []*wire.TxIn{
|
|
{
|
|
PreviousOutPoint: chanUtxo,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
ctx.chain.addBlock(newBlock, blockHeight)
|
|
ctx.notifier.notifyBlock(newBlock.Header.BlockHash(), blockHeight)
|
|
|
|
// The notification registered above should be sent, if not we'll time
|
|
// out and mark the test as failed.
|
|
select {
|
|
case ntfn := <-ntfnClient.TopologyChanges:
|
|
// We should have exactly a single notification for the channel
|
|
// "closed" above.
|
|
closedChans := ntfn.ClosedChannels
|
|
if len(closedChans) == 0 {
|
|
t.Fatal("close channel ntfn not populated")
|
|
} else if len(closedChans) != 1 {
|
|
t.Fatalf("only one should've been detected as closed, "+
|
|
"instead %v were", len(closedChans))
|
|
}
|
|
|
|
// Ensure that the notification we received includes the proper
|
|
// update the for the channel that was closed in the generated
|
|
// block.
|
|
closedChan := closedChans[0]
|
|
if closedChan.ChanID != chanID.ToUint64() {
|
|
t.Fatalf("channel ID of closed channel doesn't match: "+
|
|
"expected %v, got %v", chanID.ToUint64(), closedChan.ChanID)
|
|
}
|
|
// TODO(roasbeef): this is a hack, needs to be removed
|
|
// after commitment fees are dynamic.
|
|
if closedChan.Capacity != chanValue-5000 {
|
|
t.Fatalf("capacity of closed channel doesn't match: "+
|
|
"expected %v, got %v", chanValue, closedChan.Capacity)
|
|
}
|
|
if closedChan.ClosedHeight != blockHeight {
|
|
t.Fatalf("close height of closed channel doesn't match: "+
|
|
"expected %v, got %v", blockHeight, closedChan.ClosedHeight)
|
|
}
|
|
if closedChan.ChanPoint != chanUtxo {
|
|
t.Fatalf("chan point of closed channel doesn't match: "+
|
|
"expected %v, got %v", chanUtxo, closedChan.ChanPoint)
|
|
}
|
|
|
|
case <-time.After(time.Second * 5):
|
|
t.Fatal("notification not sent")
|
|
}
|
|
}
|