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lnd.xprv/channeldb/graph_test.go
Wilmer Paulino 0b0a9f4172
channeldb+routing: refactor DeleteChannelEdge to use ChannelID 
In this commit, we refactor DeleteChannelEdge to use ChannelIDs rather
than ChannelPoints. We do this as the only use of DeleteChannelEdge is
when we are pruning zombie channels from our graph. When running under a
light client, we are unable to obtain the ChannelPoint of each edge due
to the expensive operations required to do so. As a stop-gap, we'll
resort towards using an edge's ChannelID instead, which is already
gossiped between nodes.
2019-04-18 21:57:41 -07:00

3008 lines
86 KiB
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package channeldb
import (
"bytes"
"crypto/sha256"
"fmt"
"image/color"
"math"
"math/big"
prand "math/rand"
"net"
"reflect"
"runtime"
"testing"
"time"
"github.com/btcsuite/btcd/btcec"
"github.com/btcsuite/btcd/chaincfg/chainhash"
"github.com/btcsuite/btcd/wire"
"github.com/coreos/bbolt"
"github.com/davecgh/go-spew/spew"
"github.com/lightningnetwork/lnd/lnwire"
)
var (
testAddr = &net.TCPAddr{IP: (net.IP)([]byte{0xA, 0x0, 0x0, 0x1}),
Port: 9000}
anotherAddr, _ = net.ResolveTCPAddr("tcp",
"[2001:db8:85a3:0:0:8a2e:370:7334]:80")
testAddrs = []net.Addr{testAddr, anotherAddr}
randSource = prand.NewSource(time.Now().Unix())
randInts = prand.New(randSource)
testSig = &btcec.Signature{
R: new(big.Int),
S: new(big.Int),
}
_, _ = testSig.R.SetString("63724406601629180062774974542967536251589935445068131219452686511677818569431", 10)
_, _ = testSig.S.SetString("18801056069249825825291287104931333862866033135609736119018462340006816851118", 10)
testFeatures = lnwire.NewFeatureVector(nil, lnwire.GlobalFeatures)
)
func createTestVertex(db *DB) (*LightningNode, error) {
updateTime := prand.Int63()
priv, err := btcec.NewPrivateKey(btcec.S256())
if err != nil {
return nil, err
}
pub := priv.PubKey().SerializeCompressed()
n := &LightningNode{
HaveNodeAnnouncement: true,
AuthSigBytes: testSig.Serialize(),
LastUpdate: time.Unix(updateTime, 0),
Color: color.RGBA{1, 2, 3, 0},
Alias: "kek" + string(pub[:]),
Features: testFeatures,
Addresses: testAddrs,
db: db,
}
copy(n.PubKeyBytes[:], priv.PubKey().SerializeCompressed())
return n, nil
}
func TestNodeInsertionAndDeletion(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test basic insertion/deletion for vertexes from the
// graph, so we'll create a test vertex to start with.
_, testPub := btcec.PrivKeyFromBytes(btcec.S256(), key[:])
node := &LightningNode{
HaveNodeAnnouncement: true,
AuthSigBytes: testSig.Serialize(),
LastUpdate: time.Unix(1232342, 0),
Color: color.RGBA{1, 2, 3, 0},
Alias: "kek",
Features: testFeatures,
Addresses: testAddrs,
ExtraOpaqueData: []byte("extra new data"),
db: db,
}
copy(node.PubKeyBytes[:], testPub.SerializeCompressed())
// First, insert the node into the graph DB. This should succeed
// without any errors.
if err := graph.AddLightningNode(node); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Next, fetch the node from the database to ensure everything was
// serialized properly.
dbNode, err := graph.FetchLightningNode(testPub)
if err != nil {
t.Fatalf("unable to locate node: %v", err)
}
if _, exists, err := graph.HasLightningNode(dbNode.PubKeyBytes); err != nil {
t.Fatalf("unable to query for node: %v", err)
} else if !exists {
t.Fatalf("node should be found but wasn't")
}
// The two nodes should match exactly!
if err := compareNodes(node, dbNode); err != nil {
t.Fatalf("nodes don't match: %v", err)
}
// Next, delete the node from the graph, this should purge all data
// related to the node.
if err := graph.DeleteLightningNode(testPub); err != nil {
t.Fatalf("unable to delete node; %v", err)
}
// Finally, attempt to fetch the node again. This should fail as the
// node should have been deleted from the database.
_, err = graph.FetchLightningNode(testPub)
if err != ErrGraphNodeNotFound {
t.Fatalf("fetch after delete should fail!")
}
}
// TestPartialNode checks that we can add and retrieve a LightningNode where
// where only the pubkey is known to the database.
func TestPartialNode(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We want to be able to insert nodes into the graph that only has the
// PubKey set.
_, testPub := btcec.PrivKeyFromBytes(btcec.S256(), key[:])
node := &LightningNode{
HaveNodeAnnouncement: false,
}
copy(node.PubKeyBytes[:], testPub.SerializeCompressed())
if err := graph.AddLightningNode(node); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Next, fetch the node from the database to ensure everything was
// serialized properly.
dbNode, err := graph.FetchLightningNode(testPub)
if err != nil {
t.Fatalf("unable to locate node: %v", err)
}
if _, exists, err := graph.HasLightningNode(dbNode.PubKeyBytes); err != nil {
t.Fatalf("unable to query for node: %v", err)
} else if !exists {
t.Fatalf("node should be found but wasn't")
}
// The two nodes should match exactly! (with default values for
// LastUpdate and db set to satisfy compareNodes())
node = &LightningNode{
HaveNodeAnnouncement: false,
LastUpdate: time.Unix(0, 0),
db: db,
}
copy(node.PubKeyBytes[:], testPub.SerializeCompressed())
if err := compareNodes(node, dbNode); err != nil {
t.Fatalf("nodes don't match: %v", err)
}
// Next, delete the node from the graph, this should purge all data
// related to the node.
if err := graph.DeleteLightningNode(testPub); err != nil {
t.Fatalf("unable to delete node: %v", err)
}
// Finally, attempt to fetch the node again. This should fail as the
// node should have been deleted from the database.
_, err = graph.FetchLightningNode(testPub)
if err != ErrGraphNodeNotFound {
t.Fatalf("fetch after delete should fail!")
}
}
func TestAliasLookup(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test the alias index within the database, so first
// create a new test node.
testNode, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
// Add the node to the graph's database, this should also insert an
// entry into the alias index for this node.
if err := graph.AddLightningNode(testNode); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Next, attempt to lookup the alias. The alias should exactly match
// the one which the test node was assigned.
nodePub, err := testNode.PubKey()
if err != nil {
t.Fatalf("unable to generate pubkey: %v", err)
}
dbAlias, err := graph.LookupAlias(nodePub)
if err != nil {
t.Fatalf("unable to find alias: %v", err)
}
if dbAlias != testNode.Alias {
t.Fatalf("aliases don't match, expected %v got %v",
testNode.Alias, dbAlias)
}
// Ensure that looking up a non-existent alias results in an error.
node, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
nodePub, err = node.PubKey()
if err != nil {
t.Fatalf("unable to generate pubkey: %v", err)
}
_, err = graph.LookupAlias(nodePub)
if err != ErrNodeAliasNotFound {
t.Fatalf("alias lookup should fail for non-existent pubkey")
}
}
func TestSourceNode(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test the setting/getting of the source node, so we
// first create a fake node to use within the test.
testNode, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
// Attempt to fetch the source node, this should return an error as the
// source node hasn't yet been set.
if _, err := graph.SourceNode(); err != ErrSourceNodeNotSet {
t.Fatalf("source node shouldn't be set in new graph")
}
// Set the source the source node, this should insert the node into the
// database in a special way indicating it's the source node.
if err := graph.SetSourceNode(testNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
// Retrieve the source node from the database, it should exactly match
// the one we set above.
sourceNode, err := graph.SourceNode()
if err != nil {
t.Fatalf("unable to fetch source node: %v", err)
}
if err := compareNodes(testNode, sourceNode); err != nil {
t.Fatalf("nodes don't match: %v", err)
}
}
func TestEdgeInsertionDeletion(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test the insertion/deletion of edges, so we create two
// vertexes to connect.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
// In addition to the fake vertexes we create some fake channel
// identifiers.
chanID := uint64(prand.Int63())
outpoint := wire.OutPoint{
Hash: rev,
Index: 9,
}
// Add the new edge to the database, this should proceed without any
// errors.
node1Pub, err := node1.PubKey()
if err != nil {
t.Fatalf("unable to generate node key: %v", err)
}
node2Pub, err := node2.PubKey()
if err != nil {
t.Fatalf("unable to generate node key: %v", err)
}
edgeInfo := ChannelEdgeInfo{
ChannelID: chanID,
ChainHash: key,
AuthProof: &ChannelAuthProof{
NodeSig1Bytes: testSig.Serialize(),
NodeSig2Bytes: testSig.Serialize(),
BitcoinSig1Bytes: testSig.Serialize(),
BitcoinSig2Bytes: testSig.Serialize(),
},
ChannelPoint: outpoint,
Capacity: 9000,
}
copy(edgeInfo.NodeKey1Bytes[:], node1Pub.SerializeCompressed())
copy(edgeInfo.NodeKey2Bytes[:], node2Pub.SerializeCompressed())
copy(edgeInfo.BitcoinKey1Bytes[:], node1Pub.SerializeCompressed())
copy(edgeInfo.BitcoinKey2Bytes[:], node2Pub.SerializeCompressed())
if err := graph.AddChannelEdge(&edgeInfo); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
// Ensure that both policies are returned as unknown (nil).
_, e1, e2, err := graph.FetchChannelEdgesByID(chanID)
if err != nil {
t.Fatalf("unable to fetch channel edge")
}
if e1 != nil || e2 != nil {
t.Fatalf("channel edges not unknown")
}
// Next, attempt to delete the edge from the database, again this
// should proceed without any issues.
if err := graph.DeleteChannelEdges(chanID); err != nil {
t.Fatalf("unable to delete edge: %v", err)
}
// Ensure that any query attempts to lookup the delete channel edge are
// properly deleted.
if _, _, _, err := graph.FetchChannelEdgesByOutpoint(&outpoint); err == nil {
t.Fatalf("channel edge not deleted")
}
if _, _, _, err := graph.FetchChannelEdgesByID(chanID); err == nil {
t.Fatalf("channel edge not deleted")
}
isZombie, _, _ := graph.IsZombieEdge(chanID)
if !isZombie {
t.Fatal("channel edge not marked as zombie")
}
// Finally, attempt to delete a (now) non-existent edge within the
// database, this should result in an error.
err = graph.DeleteChannelEdges(chanID)
if err != ErrEdgeNotFound {
t.Fatalf("deleting a non-existent edge should fail!")
}
}
func createEdge(height, txIndex uint32, txPosition uint16, outPointIndex uint32,
node1, node2 *LightningNode) (ChannelEdgeInfo, lnwire.ShortChannelID) {
shortChanID := lnwire.ShortChannelID{
BlockHeight: height,
TxIndex: txIndex,
TxPosition: txPosition,
}
outpoint := wire.OutPoint{
Hash: rev,
Index: outPointIndex,
}
node1Pub, _ := node1.PubKey()
node2Pub, _ := node2.PubKey()
edgeInfo := ChannelEdgeInfo{
ChannelID: shortChanID.ToUint64(),
ChainHash: key,
AuthProof: &ChannelAuthProof{
NodeSig1Bytes: testSig.Serialize(),
NodeSig2Bytes: testSig.Serialize(),
BitcoinSig1Bytes: testSig.Serialize(),
BitcoinSig2Bytes: testSig.Serialize(),
},
ChannelPoint: outpoint,
Capacity: 9000,
}
copy(edgeInfo.NodeKey1Bytes[:], node1Pub.SerializeCompressed())
copy(edgeInfo.NodeKey2Bytes[:], node2Pub.SerializeCompressed())
copy(edgeInfo.BitcoinKey1Bytes[:], node1Pub.SerializeCompressed())
copy(edgeInfo.BitcoinKey2Bytes[:], node2Pub.SerializeCompressed())
return edgeInfo, shortChanID
}
// TestDisconnectBlockAtHeight checks that the pruned state of the channel
// database is what we expect after calling DisconnectBlockAtHeight.
func TestDisconnectBlockAtHeight(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
sourceNode, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create source node: %v", err)
}
if err := graph.SetSourceNode(sourceNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
// We'd like to test the insertion/deletion of edges, so we create two
// vertexes to connect.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
// In addition to the fake vertexes we create some fake channel
// identifiers.
var spendOutputs []*wire.OutPoint
var blockHash chainhash.Hash
copy(blockHash[:], bytes.Repeat([]byte{1}, 32))
// Prune the graph a few times to make sure we have entries in the
// prune log.
_, err = graph.PruneGraph(spendOutputs, &blockHash, 155)
if err != nil {
t.Fatalf("unable to prune graph: %v", err)
}
var blockHash2 chainhash.Hash
copy(blockHash2[:], bytes.Repeat([]byte{2}, 32))
_, err = graph.PruneGraph(spendOutputs, &blockHash2, 156)
if err != nil {
t.Fatalf("unable to prune graph: %v", err)
}
// We'll create 3 almost identical edges, so first create a helper
// method containing all logic for doing so.
// Create an edge which has its block height at 156.
height := uint32(156)
edgeInfo, _ := createEdge(height, 0, 0, 0, node1, node2)
// Create an edge with block height 157. We give it
// maximum values for tx index and position, to make
// sure our database range scan get edges from the
// entire range.
edgeInfo2, _ := createEdge(
height+1, math.MaxUint32&0x00ffffff, math.MaxUint16, 1,
node1, node2,
)
// Create a third edge, this with a block height of 155.
edgeInfo3, _ := createEdge(height-1, 0, 0, 2, node1, node2)
// Now add all these new edges to the database.
if err := graph.AddChannelEdge(&edgeInfo); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
if err := graph.AddChannelEdge(&edgeInfo2); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
if err := graph.AddChannelEdge(&edgeInfo3); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
// Call DisconnectBlockAtHeight, which should prune every channel
// that has a funding height of 'height' or greater.
removed, err := graph.DisconnectBlockAtHeight(uint32(height))
if err != nil {
t.Fatalf("unable to prune %v", err)
}
// The two edges should have been removed.
if len(removed) != 2 {
t.Fatalf("expected two edges to be removed from graph, "+
"only %d were", len(removed))
}
if removed[0].ChannelID != edgeInfo.ChannelID {
t.Fatalf("expected edge to be removed from graph")
}
if removed[1].ChannelID != edgeInfo2.ChannelID {
t.Fatalf("expected edge to be removed from graph")
}
// The two first edges should be removed from the db.
_, _, has, isZombie, err := graph.HasChannelEdge(edgeInfo.ChannelID)
if err != nil {
t.Fatalf("unable to query for edge: %v", err)
}
if has {
t.Fatalf("edge1 was not pruned from the graph")
}
if isZombie {
t.Fatal("reorged edge1 should not be marked as zombie")
}
_, _, has, isZombie, err = graph.HasChannelEdge(edgeInfo2.ChannelID)
if err != nil {
t.Fatalf("unable to query for edge: %v", err)
}
if has {
t.Fatalf("edge2 was not pruned from the graph")
}
if isZombie {
t.Fatal("reorged edge2 should not be marked as zombie")
}
// Edge 3 should not be removed.
_, _, has, isZombie, err = graph.HasChannelEdge(edgeInfo3.ChannelID)
if err != nil {
t.Fatalf("unable to query for edge: %v", err)
}
if !has {
t.Fatalf("edge3 was pruned from the graph")
}
if isZombie {
t.Fatal("edge3 was marked as zombie")
}
// PruneTip should be set to the blockHash we specified for the block
// at height 155.
hash, h, err := graph.PruneTip()
if err != nil {
t.Fatalf("unable to get prune tip: %v", err)
}
if !blockHash.IsEqual(hash) {
t.Fatalf("expected best block to be %x, was %x", blockHash, hash)
}
if h != height-1 {
t.Fatalf("expected best block height to be %d, was %d", height-1, h)
}
}
func assertEdgeInfoEqual(t *testing.T, e1 *ChannelEdgeInfo,
e2 *ChannelEdgeInfo) {
if e1.ChannelID != e2.ChannelID {
t.Fatalf("chan id's don't match: %v vs %v", e1.ChannelID,
e2.ChannelID)
}
if e1.ChainHash != e2.ChainHash {
t.Fatalf("chain hashes don't match: %v vs %v", e1.ChainHash,
e2.ChainHash)
}
if !bytes.Equal(e1.NodeKey1Bytes[:], e2.NodeKey1Bytes[:]) {
t.Fatalf("nodekey1 doesn't match")
}
if !bytes.Equal(e1.NodeKey2Bytes[:], e2.NodeKey2Bytes[:]) {
t.Fatalf("nodekey2 doesn't match")
}
if !bytes.Equal(e1.BitcoinKey1Bytes[:], e2.BitcoinKey1Bytes[:]) {
t.Fatalf("bitcoinkey1 doesn't match")
}
if !bytes.Equal(e1.BitcoinKey2Bytes[:], e2.BitcoinKey2Bytes[:]) {
t.Fatalf("bitcoinkey2 doesn't match")
}
if !bytes.Equal(e1.Features, e2.Features) {
t.Fatalf("features doesn't match: %x vs %x", e1.Features,
e2.Features)
}
if !bytes.Equal(e1.AuthProof.NodeSig1Bytes, e2.AuthProof.NodeSig1Bytes) {
t.Fatalf("nodesig1 doesn't match: %v vs %v",
spew.Sdump(e1.AuthProof.NodeSig1Bytes),
spew.Sdump(e2.AuthProof.NodeSig1Bytes))
}
if !bytes.Equal(e1.AuthProof.NodeSig2Bytes, e2.AuthProof.NodeSig2Bytes) {
t.Fatalf("nodesig2 doesn't match")
}
if !bytes.Equal(e1.AuthProof.BitcoinSig1Bytes, e2.AuthProof.BitcoinSig1Bytes) {
t.Fatalf("bitcoinsig1 doesn't match")
}
if !bytes.Equal(e1.AuthProof.BitcoinSig2Bytes, e2.AuthProof.BitcoinSig2Bytes) {
t.Fatalf("bitcoinsig2 doesn't match")
}
if e1.ChannelPoint != e2.ChannelPoint {
t.Fatalf("channel point match: %v vs %v", e1.ChannelPoint,
e2.ChannelPoint)
}
if e1.Capacity != e2.Capacity {
t.Fatalf("capacity doesn't match: %v vs %v", e1.Capacity,
e2.Capacity)
}
if !bytes.Equal(e1.ExtraOpaqueData, e2.ExtraOpaqueData) {
t.Fatalf("extra data doesn't match: %v vs %v",
e2.ExtraOpaqueData, e2.ExtraOpaqueData)
}
}
func createChannelEdge(db *DB, node1, node2 *LightningNode) (*ChannelEdgeInfo,
*ChannelEdgePolicy, *ChannelEdgePolicy) {
var (
firstNode *LightningNode
secondNode *LightningNode
)
if bytes.Compare(node1.PubKeyBytes[:], node2.PubKeyBytes[:]) == -1 {
firstNode = node1
secondNode = node2
} else {
firstNode = node2
secondNode = node1
}
// In addition to the fake vertexes we create some fake channel
// identifiers.
chanID := uint64(prand.Int63())
outpoint := wire.OutPoint{
Hash: rev,
Index: 9,
}
// Add the new edge to the database, this should proceed without any
// errors.
edgeInfo := &ChannelEdgeInfo{
ChannelID: chanID,
ChainHash: key,
AuthProof: &ChannelAuthProof{
NodeSig1Bytes: testSig.Serialize(),
NodeSig2Bytes: testSig.Serialize(),
BitcoinSig1Bytes: testSig.Serialize(),
BitcoinSig2Bytes: testSig.Serialize(),
},
ChannelPoint: outpoint,
Capacity: 1000,
ExtraOpaqueData: []byte("new unknown feature"),
}
copy(edgeInfo.NodeKey1Bytes[:], firstNode.PubKeyBytes[:])
copy(edgeInfo.NodeKey2Bytes[:], secondNode.PubKeyBytes[:])
copy(edgeInfo.BitcoinKey1Bytes[:], firstNode.PubKeyBytes[:])
copy(edgeInfo.BitcoinKey2Bytes[:], secondNode.PubKeyBytes[:])
edge1 := &ChannelEdgePolicy{
SigBytes: testSig.Serialize(),
ChannelID: chanID,
LastUpdate: time.Unix(433453, 0),
MessageFlags: 1,
ChannelFlags: 0,
TimeLockDelta: 99,
MinHTLC: 2342135,
MaxHTLC: 13928598,
FeeBaseMSat: 4352345,
FeeProportionalMillionths: 3452352,
Node: secondNode,
ExtraOpaqueData: []byte("new unknown feature2"),
db: db,
}
edge2 := &ChannelEdgePolicy{
SigBytes: testSig.Serialize(),
ChannelID: chanID,
LastUpdate: time.Unix(124234, 0),
MessageFlags: 1,
ChannelFlags: 1,
TimeLockDelta: 99,
MinHTLC: 2342135,
MaxHTLC: 13928598,
FeeBaseMSat: 4352345,
FeeProportionalMillionths: 90392423,
Node: firstNode,
ExtraOpaqueData: []byte("new unknown feature1"),
db: db,
}
return edgeInfo, edge1, edge2
}
func TestEdgeInfoUpdates(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test the update of edges inserted into the database, so
// we create two vertexes to connect.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Create an edge and add it to the db.
edgeInfo, edge1, edge2 := createChannelEdge(db, node1, node2)
// Make sure inserting the policy at this point, before the edge info
// is added, will fail.
if err := graph.UpdateEdgePolicy(edge1); err != ErrEdgeNotFound {
t.Fatalf("expected ErrEdgeNotFound, got: %v", err)
}
// Add the edge info.
if err := graph.AddChannelEdge(edgeInfo); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
chanID := edgeInfo.ChannelID
outpoint := edgeInfo.ChannelPoint
// Next, insert both edge policies into the database, they should both
// be inserted without any issues.
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
if err := graph.UpdateEdgePolicy(edge2); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// Check for existence of the edge within the database, it should be
// found.
_, _, found, isZombie, err := graph.HasChannelEdge(chanID)
if err != nil {
t.Fatalf("unable to query for edge: %v", err)
}
if !found {
t.Fatalf("graph should have of inserted edge")
}
if isZombie {
t.Fatal("live edge should not be marked as zombie")
}
// We should also be able to retrieve the channelID only knowing the
// channel point of the channel.
dbChanID, err := graph.ChannelID(&outpoint)
if err != nil {
t.Fatalf("unable to retrieve channel ID: %v", err)
}
if dbChanID != chanID {
t.Fatalf("chan ID's mismatch, expected %v got %v", dbChanID,
chanID)
}
// With the edges inserted, perform some queries to ensure that they've
// been inserted properly.
dbEdgeInfo, dbEdge1, dbEdge2, err := graph.FetchChannelEdgesByID(chanID)
if err != nil {
t.Fatalf("unable to fetch channel by ID: %v", err)
}
if err := compareEdgePolicies(dbEdge1, edge1); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
if err := compareEdgePolicies(dbEdge2, edge2); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
assertEdgeInfoEqual(t, dbEdgeInfo, edgeInfo)
// Next, attempt to query the channel edges according to the outpoint
// of the channel.
dbEdgeInfo, dbEdge1, dbEdge2, err = graph.FetchChannelEdgesByOutpoint(&outpoint)
if err != nil {
t.Fatalf("unable to fetch channel by ID: %v", err)
}
if err := compareEdgePolicies(dbEdge1, edge1); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
if err := compareEdgePolicies(dbEdge2, edge2); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
assertEdgeInfoEqual(t, dbEdgeInfo, edgeInfo)
}
func randEdgePolicy(chanID uint64, op wire.OutPoint, db *DB) *ChannelEdgePolicy {
update := prand.Int63()
return newEdgePolicy(chanID, op, db, update)
}
func newEdgePolicy(chanID uint64, op wire.OutPoint, db *DB,
updateTime int64) *ChannelEdgePolicy {
return &ChannelEdgePolicy{
ChannelID: chanID,
LastUpdate: time.Unix(updateTime, 0),
MessageFlags: 1,
ChannelFlags: 0,
TimeLockDelta: uint16(prand.Int63()),
MinHTLC: lnwire.MilliSatoshi(prand.Int63()),
MaxHTLC: lnwire.MilliSatoshi(prand.Int63()),
FeeBaseMSat: lnwire.MilliSatoshi(prand.Int63()),
FeeProportionalMillionths: lnwire.MilliSatoshi(prand.Int63()),
db: db,
}
}
func TestGraphTraversal(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test some of the graph traversal capabilities within
// the DB, so we'll create a series of fake nodes to insert into the
// graph.
const numNodes = 20
nodes := make([]*LightningNode, numNodes)
nodeIndex := map[string]struct{}{}
for i := 0; i < numNodes; i++ {
node, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create node: %v", err)
}
nodes[i] = node
nodeIndex[node.Alias] = struct{}{}
}
// Add each of the nodes into the graph, they should be inserted
// without error.
for _, node := range nodes {
if err := graph.AddLightningNode(node); err != nil {
t.Fatalf("unable to add node: %v", err)
}
}
// Iterate over each node as returned by the graph, if all nodes are
// reached, then the map created above should be empty.
err = graph.ForEachNode(nil, func(_ *bbolt.Tx, node *LightningNode) error {
delete(nodeIndex, node.Alias)
return nil
})
if err != nil {
t.Fatalf("for each failure: %v", err)
}
if len(nodeIndex) != 0 {
t.Fatalf("all nodes not reached within ForEach")
}
// Determine which node is "smaller", we'll need this in order to
// properly create the edges for the graph.
var firstNode, secondNode *LightningNode
if bytes.Compare(nodes[0].PubKeyBytes[:], nodes[1].PubKeyBytes[:]) == -1 {
firstNode = nodes[0]
secondNode = nodes[1]
} else {
firstNode = nodes[0]
secondNode = nodes[1]
}
// Create 5 channels between the first two nodes we generated above.
const numChannels = 5
chanIndex := map[uint64]struct{}{}
for i := 0; i < numChannels; i++ {
txHash := sha256.Sum256([]byte{byte(i)})
chanID := uint64(i + 1)
op := wire.OutPoint{
Hash: txHash,
Index: 0,
}
edgeInfo := ChannelEdgeInfo{
ChannelID: chanID,
ChainHash: key,
AuthProof: &ChannelAuthProof{
NodeSig1Bytes: testSig.Serialize(),
NodeSig2Bytes: testSig.Serialize(),
BitcoinSig1Bytes: testSig.Serialize(),
BitcoinSig2Bytes: testSig.Serialize(),
},
ChannelPoint: op,
Capacity: 1000,
}
copy(edgeInfo.NodeKey1Bytes[:], nodes[0].PubKeyBytes[:])
copy(edgeInfo.NodeKey2Bytes[:], nodes[1].PubKeyBytes[:])
copy(edgeInfo.BitcoinKey1Bytes[:], nodes[0].PubKeyBytes[:])
copy(edgeInfo.BitcoinKey2Bytes[:], nodes[1].PubKeyBytes[:])
err := graph.AddChannelEdge(&edgeInfo)
if err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Create and add an edge with random data that points from
// node1 -> node2.
edge := randEdgePolicy(chanID, op, db)
edge.ChannelFlags = 0
edge.Node = secondNode
edge.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// Create another random edge that points from node2 -> node1
// this time.
edge = randEdgePolicy(chanID, op, db)
edge.ChannelFlags = 1
edge.Node = firstNode
edge.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
chanIndex[chanID] = struct{}{}
}
// Iterate through all the known channels within the graph DB, once
// again if the map is empty that indicates that all edges have
// properly been reached.
err = graph.ForEachChannel(func(ei *ChannelEdgeInfo, _ *ChannelEdgePolicy,
_ *ChannelEdgePolicy) error {
delete(chanIndex, ei.ChannelID)
return nil
})
if err != nil {
t.Fatalf("for each failure: %v", err)
}
if len(chanIndex) != 0 {
t.Fatalf("all edges not reached within ForEach")
}
// Finally, we want to test the ability to iterate over all the
// outgoing channels for a particular node.
numNodeChans := 0
err = firstNode.ForEachChannel(nil, func(_ *bbolt.Tx, _ *ChannelEdgeInfo,
outEdge, inEdge *ChannelEdgePolicy) error {
// All channels between first and second node should have fully
// (both sides) specified policies.
if inEdge == nil || outEdge == nil {
return fmt.Errorf("channel policy not present")
}
// Each should indicate that it's outgoing (pointed
// towards the second node).
if !bytes.Equal(outEdge.Node.PubKeyBytes[:], secondNode.PubKeyBytes[:]) {
return fmt.Errorf("wrong outgoing edge")
}
// The incoming edge should also indicate that it's pointing to
// the origin node.
if !bytes.Equal(inEdge.Node.PubKeyBytes[:], firstNode.PubKeyBytes[:]) {
return fmt.Errorf("wrong outgoing edge")
}
numNodeChans++
return nil
})
if err != nil {
t.Fatalf("for each failure: %v", err)
}
if numNodeChans != numChannels {
t.Fatalf("all edges for node not reached within ForEach: "+
"expected %v, got %v", numChannels, numNodeChans)
}
}
func assertPruneTip(t *testing.T, graph *ChannelGraph, blockHash *chainhash.Hash,
blockHeight uint32) {
pruneHash, pruneHeight, err := graph.PruneTip()
if err != nil {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: unable to fetch prune tip: %v", line, err)
}
if !bytes.Equal(blockHash[:], pruneHash[:]) {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line: %v, prune tips don't match, expected %x got %x",
line, blockHash, pruneHash)
}
if pruneHeight != blockHeight {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: prune heights don't match, expected %v "+
"got %v", line, blockHeight, pruneHeight)
}
}
func assertNumChans(t *testing.T, graph *ChannelGraph, n int) {
numChans := 0
if err := graph.ForEachChannel(func(*ChannelEdgeInfo, *ChannelEdgePolicy,
*ChannelEdgePolicy) error {
numChans++
return nil
}); err != nil {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: unable to scan channels: %v", line, err)
}
if numChans != n {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: expected %v chans instead have %v", line,
n, numChans)
}
}
func assertNumNodes(t *testing.T, graph *ChannelGraph, n int) {
numNodes := 0
err := graph.ForEachNode(nil, func(_ *bbolt.Tx, _ *LightningNode) error {
numNodes++
return nil
})
if err != nil {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: unable to scan nodes: %v", line, err)
}
if numNodes != n {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: expected %v nodes, got %v", line, n, numNodes)
}
}
func assertChanViewEqual(t *testing.T, a []EdgePoint, b []EdgePoint) {
if len(a) != len(b) {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: chan views don't match", line)
}
chanViewSet := make(map[wire.OutPoint]struct{})
for _, op := range a {
chanViewSet[op.OutPoint] = struct{}{}
}
for _, op := range b {
if _, ok := chanViewSet[op.OutPoint]; !ok {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: chanPoint(%v) not found in first "+
"view", line, op)
}
}
}
func assertChanViewEqualChanPoints(t *testing.T, a []EdgePoint, b []*wire.OutPoint) {
if len(a) != len(b) {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: chan views don't match", line)
}
chanViewSet := make(map[wire.OutPoint]struct{})
for _, op := range a {
chanViewSet[op.OutPoint] = struct{}{}
}
for _, op := range b {
if _, ok := chanViewSet[*op]; !ok {
_, _, line, _ := runtime.Caller(1)
t.Fatalf("line %v: chanPoint(%v) not found in first "+
"view", line, op)
}
}
}
func TestGraphPruning(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
sourceNode, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create source node: %v", err)
}
if err := graph.SetSourceNode(sourceNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
// As initial set up for the test, we'll create a graph with 5 vertexes
// and enough edges to create a fully connected graph. The graph will
// be rather simple, representing a straight line.
const numNodes = 5
graphNodes := make([]*LightningNode, numNodes)
for i := 0; i < numNodes; i++ {
node, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create node: %v", err)
}
if err := graph.AddLightningNode(node); err != nil {
t.Fatalf("unable to add node: %v", err)
}
graphNodes[i] = node
}
// With the vertexes created, we'll next create a series of channels
// between them.
channelPoints := make([]*wire.OutPoint, 0, numNodes-1)
edgePoints := make([]EdgePoint, 0, numNodes-1)
for i := 0; i < numNodes-1; i++ {
txHash := sha256.Sum256([]byte{byte(i)})
chanID := uint64(i + 1)
op := wire.OutPoint{
Hash: txHash,
Index: 0,
}
channelPoints = append(channelPoints, &op)
edgeInfo := ChannelEdgeInfo{
ChannelID: chanID,
ChainHash: key,
AuthProof: &ChannelAuthProof{
NodeSig1Bytes: testSig.Serialize(),
NodeSig2Bytes: testSig.Serialize(),
BitcoinSig1Bytes: testSig.Serialize(),
BitcoinSig2Bytes: testSig.Serialize(),
},
ChannelPoint: op,
Capacity: 1000,
}
copy(edgeInfo.NodeKey1Bytes[:], graphNodes[i].PubKeyBytes[:])
copy(edgeInfo.NodeKey2Bytes[:], graphNodes[i+1].PubKeyBytes[:])
copy(edgeInfo.BitcoinKey1Bytes[:], graphNodes[i].PubKeyBytes[:])
copy(edgeInfo.BitcoinKey2Bytes[:], graphNodes[i+1].PubKeyBytes[:])
if err := graph.AddChannelEdge(&edgeInfo); err != nil {
t.Fatalf("unable to add node: %v", err)
}
pkScript, err := genMultiSigP2WSH(
edgeInfo.BitcoinKey1Bytes[:], edgeInfo.BitcoinKey2Bytes[:],
)
if err != nil {
t.Fatalf("unable to gen multi-sig p2wsh: %v", err)
}
edgePoints = append(edgePoints, EdgePoint{
FundingPkScript: pkScript,
OutPoint: op,
})
// Create and add an edge with random data that points from
// node_i -> node_i+1
edge := randEdgePolicy(chanID, op, db)
edge.ChannelFlags = 0
edge.Node = graphNodes[i]
edge.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// Create another random edge that points from node_i+1 ->
// node_i this time.
edge = randEdgePolicy(chanID, op, db)
edge.ChannelFlags = 1
edge.Node = graphNodes[i]
edge.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
}
// With all the channel points added, we'll consult the graph to ensure
// it has the same channel view as the one we just constructed.
channelView, err := graph.ChannelView()
if err != nil {
t.Fatalf("unable to get graph channel view: %v", err)
}
assertChanViewEqual(t, channelView, edgePoints)
// Now with our test graph created, we can test the pruning
// capabilities of the channel graph.
// First we create a mock block that ends up closing the first two
// channels.
var blockHash chainhash.Hash
copy(blockHash[:], bytes.Repeat([]byte{1}, 32))
blockHeight := uint32(1)
block := channelPoints[:2]
prunedChans, err := graph.PruneGraph(block, &blockHash, blockHeight)
if err != nil {
t.Fatalf("unable to prune graph: %v", err)
}
if len(prunedChans) != 2 {
t.Fatalf("incorrect number of channels pruned: "+
"expected %v, got %v", 2, prunedChans)
}
// Now ensure that the prune tip has been updated.
assertPruneTip(t, graph, &blockHash, blockHeight)
// Count up the number of channels known within the graph, only 2
// should be remaining.
assertNumChans(t, graph, 2)
// Those channels should also be missing from the channel view.
channelView, err = graph.ChannelView()
if err != nil {
t.Fatalf("unable to get graph channel view: %v", err)
}
assertChanViewEqualChanPoints(t, channelView, channelPoints[2:])
// Next we'll create a block that doesn't close any channels within the
// graph to test the negative error case.
fakeHash := sha256.Sum256([]byte("test prune"))
nonChannel := &wire.OutPoint{
Hash: fakeHash,
Index: 9,
}
blockHash = sha256.Sum256(blockHash[:])
blockHeight = 2
prunedChans, err = graph.PruneGraph(
[]*wire.OutPoint{nonChannel}, &blockHash, blockHeight,
)
if err != nil {
t.Fatalf("unable to prune graph: %v", err)
}
// No channels should have been detected as pruned.
if len(prunedChans) != 0 {
t.Fatalf("channels were pruned but shouldn't have been")
}
// Once again, the prune tip should have been updated. We should still
// see both channels and their participants, along with the source node.
assertPruneTip(t, graph, &blockHash, blockHeight)
assertNumChans(t, graph, 2)
assertNumNodes(t, graph, 4)
// Finally, create a block that prunes the remainder of the channels
// from the graph.
blockHash = sha256.Sum256(blockHash[:])
blockHeight = 3
prunedChans, err = graph.PruneGraph(
channelPoints[2:], &blockHash, blockHeight,
)
if err != nil {
t.Fatalf("unable to prune graph: %v", err)
}
// The remainder of the channels should have been pruned from the
// graph.
if len(prunedChans) != 2 {
t.Fatalf("incorrect number of channels pruned: "+
"expected %v, got %v", 2, len(prunedChans))
}
// The prune tip should be updated, no channels should be found, and
// only the source node should remain within the current graph.
assertPruneTip(t, graph, &blockHash, blockHeight)
assertNumChans(t, graph, 0)
assertNumNodes(t, graph, 1)
// Finally, the channel view at this point in the graph should now be
// completely empty. Those channels should also be missing from the
// channel view.
channelView, err = graph.ChannelView()
if err != nil {
t.Fatalf("unable to get graph channel view: %v", err)
}
if len(channelView) != 0 {
t.Fatalf("channel view should be empty, instead have: %v",
channelView)
}
}
// TestHighestChanID tests that we're able to properly retrieve the highest
// known channel ID in the database.
func TestHighestChanID(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// If we don't yet have any channels in the database, then we should
// get a channel ID of zero if we ask for the highest channel ID.
bestID, err := graph.HighestChanID()
if err != nil {
t.Fatalf("unable to get highest ID: %v", err)
}
if bestID != 0 {
t.Fatalf("best ID w/ no chan should be zero, is instead: %v",
bestID)
}
// Next, we'll insert two channels into the database, with each channel
// connecting the same two nodes.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
// The first channel with be at height 10, while the other will be at
// height 100.
edge1, _ := createEdge(10, 0, 0, 0, node1, node2)
edge2, chanID2 := createEdge(100, 0, 0, 0, node1, node2)
if err := graph.AddChannelEdge(&edge1); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
if err := graph.AddChannelEdge(&edge2); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
// Now that the edges has been inserted, we'll query for the highest
// known channel ID in the database.
bestID, err = graph.HighestChanID()
if err != nil {
t.Fatalf("unable to get highest ID: %v", err)
}
if bestID != chanID2.ToUint64() {
t.Fatalf("expected %v got %v for best chan ID: ",
chanID2.ToUint64(), bestID)
}
// If we add another edge, then the current best chan ID should be
// updated as well.
edge3, chanID3 := createEdge(1000, 0, 0, 0, node1, node2)
if err := graph.AddChannelEdge(&edge3); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
bestID, err = graph.HighestChanID()
if err != nil {
t.Fatalf("unable to get highest ID: %v", err)
}
if bestID != chanID3.ToUint64() {
t.Fatalf("expected %v got %v for best chan ID: ",
chanID3.ToUint64(), bestID)
}
}
// TestChanUpdatesInHorizon tests the we're able to properly retrieve all known
// channel updates within a specific time horizon. It also tests that upon
// insertion of a new edge, the edge update index is updated properly.
func TestChanUpdatesInHorizon(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// If we issue an arbitrary query before any channel updates are
// inserted in the database, we should get zero results.
chanUpdates, err := graph.ChanUpdatesInHorizon(
time.Unix(999, 0), time.Unix(9999, 0),
)
if err != nil {
t.Fatalf("unable to updates for updates: %v", err)
}
if len(chanUpdates) != 0 {
t.Fatalf("expected 0 chan updates, instead got %v",
len(chanUpdates))
}
// We'll start by creating two nodes which will seed our test graph.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// We'll now create 10 channels between the two nodes, with update
// times 10 seconds after each other.
const numChans = 10
startTime := time.Unix(1234, 0)
endTime := startTime
edges := make([]ChannelEdge, 0, numChans)
for i := 0; i < numChans; i++ {
txHash := sha256.Sum256([]byte{byte(i)})
op := wire.OutPoint{
Hash: txHash,
Index: 0,
}
channel, chanID := createEdge(
uint32(i*10), 0, 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&channel); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
edge1UpdateTime := endTime
edge2UpdateTime := edge1UpdateTime.Add(time.Second)
endTime = endTime.Add(time.Second * 10)
edge1 := newEdgePolicy(
chanID.ToUint64(), op, db, edge1UpdateTime.Unix(),
)
edge1.ChannelFlags = 0
edge1.Node = node2
edge1.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
edge2 := newEdgePolicy(
chanID.ToUint64(), op, db, edge2UpdateTime.Unix(),
)
edge2.ChannelFlags = 1
edge2.Node = node1
edge2.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge2); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
edges = append(edges, ChannelEdge{
Info: &channel,
Policy1: edge1,
Policy2: edge2,
})
}
// With our channels loaded, we'll now start our series of queries.
queryCases := []struct {
start time.Time
end time.Time
resp []ChannelEdge
}{
// If we query for a time range that's strictly below our set
// of updates, then we'll get an empty result back.
{
start: time.Unix(100, 0),
end: time.Unix(200, 0),
},
// If we query for a time range that's well beyond our set of
// updates, we should get an empty set of results back.
{
start: time.Unix(99999, 0),
end: time.Unix(999999, 0),
},
// If we query for the start time, and 10 seconds directly
// after it, we should only get a single update, that first
// one.
{
start: time.Unix(1234, 0),
end: startTime.Add(time.Second * 10),
resp: []ChannelEdge{edges[0]},
},
// If we add 10 seconds past the first update, and then
// subtract 10 from the last update, then we should only get
// the 8 edges in the middle.
{
start: startTime.Add(time.Second * 10),
end: endTime.Add(-time.Second * 10),
resp: edges[1:9],
},
// If we use the start and end time as is, we should get the
// entire range.
{
start: startTime,
end: endTime,
resp: edges,
},
}
for _, queryCase := range queryCases {
resp, err := graph.ChanUpdatesInHorizon(
queryCase.start, queryCase.end,
)
if err != nil {
t.Fatalf("unable to query for updates: %v", err)
}
if len(resp) != len(queryCase.resp) {
t.Fatalf("expected %v chans, got %v chans",
len(queryCase.resp), len(resp))
}
for i := 0; i < len(resp); i++ {
chanExp := queryCase.resp[i]
chanRet := resp[i]
assertEdgeInfoEqual(t, chanExp.Info, chanRet.Info)
err := compareEdgePolicies(chanExp.Policy1, chanRet.Policy1)
if err != nil {
t.Fatal(err)
}
compareEdgePolicies(chanExp.Policy2, chanRet.Policy2)
if err != nil {
t.Fatal(err)
}
}
}
}
// TestNodeUpdatesInHorizon tests that we're able to properly scan and retrieve
// the most recent node updates within a particular time horizon.
func TestNodeUpdatesInHorizon(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
startTime := time.Unix(1234, 0)
endTime := startTime
// If we issue an arbitrary query before we insert any nodes into the
// database, then we shouldn't get any results back.
nodeUpdates, err := graph.NodeUpdatesInHorizon(
time.Unix(999, 0), time.Unix(9999, 0),
)
if err != nil {
t.Fatalf("unable to query for node updates: %v", err)
}
if len(nodeUpdates) != 0 {
t.Fatalf("expected 0 node updates, instead got %v",
len(nodeUpdates))
}
// We'll create 10 node announcements, each with an update timestamp 10
// seconds after the other.
const numNodes = 10
nodeAnns := make([]LightningNode, 0, numNodes)
for i := 0; i < numNodes; i++ {
nodeAnn, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test vertex: %v", err)
}
// The node ann will use the current end time as its last
// update them, then we'll add 10 seconds in order to create
// the proper update time for the next node announcement.
updateTime := endTime
endTime = updateTime.Add(time.Second * 10)
nodeAnn.LastUpdate = updateTime
nodeAnns = append(nodeAnns, *nodeAnn)
if err := graph.AddLightningNode(nodeAnn); err != nil {
t.Fatalf("unable to add lightning node: %v", err)
}
}
queryCases := []struct {
start time.Time
end time.Time
resp []LightningNode
}{
// If we query for a time range that's strictly below our set
// of updates, then we'll get an empty result back.
{
start: time.Unix(100, 0),
end: time.Unix(200, 0),
},
// If we query for a time range that's well beyond our set of
// updates, we should get an empty set of results back.
{
start: time.Unix(99999, 0),
end: time.Unix(999999, 0),
},
// If we skip he first time epoch with out start time, then we
// should get back every now but the first.
{
start: startTime.Add(time.Second * 10),
end: endTime,
resp: nodeAnns[1:],
},
// If we query for the range as is, we should get all 10
// announcements back.
{
start: startTime,
end: endTime,
resp: nodeAnns,
},
// If we reduce the ending time by 10 seconds, then we should
// get all but the last node we inserted.
{
start: startTime,
end: endTime.Add(-time.Second * 10),
resp: nodeAnns[:9],
},
}
for _, queryCase := range queryCases {
resp, err := graph.NodeUpdatesInHorizon(queryCase.start, queryCase.end)
if err != nil {
t.Fatalf("unable to query for nodes: %v", err)
}
if len(resp) != len(queryCase.resp) {
t.Fatalf("expected %v nodes, got %v nodes",
len(queryCase.resp), len(resp))
}
for i := 0; i < len(resp); i++ {
err := compareNodes(&queryCase.resp[i], &resp[i])
if err != nil {
t.Fatal(err)
}
}
}
}
// TestFilterKnownChanIDs tests that we're able to properly perform the set
// differences of an incoming set of channel ID's, and those that we already
// know of on disk.
func TestFilterKnownChanIDs(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// If we try to filter out a set of channel ID's before we even know of
// any channels, then we should get the entire set back.
preChanIDs := []uint64{1, 2, 3, 4}
filteredIDs, err := graph.FilterKnownChanIDs(preChanIDs)
if err != nil {
t.Fatalf("unable to filter chan IDs: %v", err)
}
if !reflect.DeepEqual(preChanIDs, filteredIDs) {
t.Fatalf("chan IDs shouldn't have been filtered!")
}
// We'll start by creating two nodes which will seed our test graph.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Next, we'll add 5 channel ID's to the graph, each of them having a
// block height 10 blocks after the previous.
const numChans = 5
chanIDs := make([]uint64, 0, numChans)
for i := 0; i < numChans; i++ {
channel, chanID := createEdge(
uint32(i*10), 0, 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&channel); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
chanIDs = append(chanIDs, chanID.ToUint64())
}
const numZombies = 5
zombieIDs := make([]uint64, 0, numZombies)
for i := 0; i < numZombies; i++ {
channel, chanID := createEdge(
uint32(i*10+1), 0, 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&channel); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
err := graph.DeleteChannelEdges(channel.ChannelID)
if err != nil {
t.Fatalf("unable to mark edge zombie: %v", err)
}
zombieIDs = append(zombieIDs, chanID.ToUint64())
}
queryCases := []struct {
queryIDs []uint64
resp []uint64
}{
// If we attempt to filter out all chanIDs we know of, the
// response should be the empty set.
{
queryIDs: chanIDs,
},
// If we attempt to filter out all zombies that we know of, the
// response should be the empty set.
{
queryIDs: zombieIDs,
},
// If we query for a set of ID's that we didn't insert, we
// should get the same set back.
{
queryIDs: []uint64{99, 100},
resp: []uint64{99, 100},
},
// If we query for a super-set of our the chan ID's inserted,
// we should only get those new chanIDs back.
{
queryIDs: append(chanIDs, []uint64{99, 101}...),
resp: []uint64{99, 101},
},
}
for _, queryCase := range queryCases {
resp, err := graph.FilterKnownChanIDs(queryCase.queryIDs)
if err != nil {
t.Fatalf("unable to filter chan IDs: %v", err)
}
if !reflect.DeepEqual(resp, queryCase.resp) {
t.Fatalf("expected %v, got %v", spew.Sdump(queryCase.resp),
spew.Sdump(resp))
}
}
}
// TestFilterChannelRange tests that we're able to properly retrieve the full
// set of short channel ID's for a given block range.
func TestFilterChannelRange(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'll first populate our graph with two nodes. All channels created
// below will be made between these two nodes.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// If we try to filter a channel range before we have any channels
// inserted, we should get an empty slice of results.
resp, err := graph.FilterChannelRange(10, 100)
if err != nil {
t.Fatalf("unable to filter channels: %v", err)
}
if len(resp) != 0 {
t.Fatalf("expected zero chans, instead got %v", len(resp))
}
// To start, we'll create a set of channels, each mined in a block 10
// blocks after the prior one.
startHeight := uint32(100)
endHeight := startHeight
const numChans = 10
chanIDs := make([]uint64, 0, numChans)
for i := 0; i < numChans; i++ {
chanHeight := endHeight
channel, chanID := createEdge(
uint32(chanHeight), uint32(i+1), 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&channel); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
chanIDs = append(chanIDs, chanID.ToUint64())
endHeight += 10
}
// With our channels inserted, we'll construct a series of queries that
// we'll execute below in order to exercise the features of the
// FilterKnownChanIDs method.
queryCases := []struct {
startHeight uint32
endHeight uint32
resp []uint64
}{
// If we query for the entire range, then we should get the same
// set of short channel IDs back.
{
startHeight: startHeight,
endHeight: endHeight,
resp: chanIDs,
},
// If we query for a range of channels right before our range, we
// shouldn't get any results back.
{
startHeight: 0,
endHeight: 10,
},
// If we only query for the last height (range wise), we should
// only get that last channel.
{
startHeight: endHeight - 10,
endHeight: endHeight - 10,
resp: chanIDs[9:],
},
// If we query for just the first height, we should only get a
// single channel back (the first one).
{
startHeight: startHeight,
endHeight: startHeight,
resp: chanIDs[:1],
},
}
for i, queryCase := range queryCases {
resp, err := graph.FilterChannelRange(
queryCase.startHeight, queryCase.endHeight,
)
if err != nil {
t.Fatalf("unable to issue range query: %v", err)
}
if !reflect.DeepEqual(resp, queryCase.resp) {
t.Fatalf("case #%v: expected %v, got %v", i,
queryCase.resp, resp)
}
}
}
// TestFetchChanInfos tests that we're able to properly retrieve the full set
// of ChannelEdge structs for a given set of short channel ID's.
func TestFetchChanInfos(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'll first populate our graph with two nodes. All channels created
// below will be made between these two nodes.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// We'll make 5 test channels, ensuring we keep track of which channel
// ID corresponds to a particular ChannelEdge.
const numChans = 5
startTime := time.Unix(1234, 0)
endTime := startTime
edges := make([]ChannelEdge, 0, numChans)
edgeQuery := make([]uint64, 0, numChans)
for i := 0; i < numChans; i++ {
txHash := sha256.Sum256([]byte{byte(i)})
op := wire.OutPoint{
Hash: txHash,
Index: 0,
}
channel, chanID := createEdge(
uint32(i*10), 0, 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&channel); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
updateTime := endTime
endTime = updateTime.Add(time.Second * 10)
edge1 := newEdgePolicy(
chanID.ToUint64(), op, db, updateTime.Unix(),
)
edge1.ChannelFlags = 0
edge1.Node = node2
edge1.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
edge2 := newEdgePolicy(
chanID.ToUint64(), op, db, updateTime.Unix(),
)
edge2.ChannelFlags = 1
edge2.Node = node1
edge2.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge2); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
edges = append(edges, ChannelEdge{
Info: &channel,
Policy1: edge1,
Policy2: edge2,
})
edgeQuery = append(edgeQuery, chanID.ToUint64())
}
// Add an additional edge that does not exist. The query should skip
// this channel and return only infos for the edges that exist.
edgeQuery = append(edgeQuery, 500)
// Add an another edge to the query that has been marked as a zombie
// edge. The query should also skip this channel.
zombieChan, zombieChanID := createEdge(
666, 0, 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&zombieChan); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
err = graph.DeleteChannelEdges(zombieChan.ChannelID)
if err != nil {
t.Fatalf("unable to delete and mark edge zombie: %v", err)
}
edgeQuery = append(edgeQuery, zombieChanID.ToUint64())
// We'll now attempt to query for the range of channel ID's we just
// inserted into the database. We should get the exact same set of
// edges back.
resp, err := graph.FetchChanInfos(edgeQuery)
if err != nil {
t.Fatalf("unable to fetch chan edges: %v", err)
}
if len(resp) != len(edges) {
t.Fatalf("expected %v edges, instead got %v", len(edges),
len(resp))
}
for i := 0; i < len(resp); i++ {
err := compareEdgePolicies(resp[i].Policy1, edges[i].Policy1)
if err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
err = compareEdgePolicies(resp[i].Policy2, edges[i].Policy2)
if err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
assertEdgeInfoEqual(t, resp[i].Info, edges[i].Info)
}
}
// TestIncompleteChannelPolicies tests that a channel that only has a policy
// specified on one end is properly returned in ForEachChannel calls from
// both sides.
func TestIncompleteChannelPolicies(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// Create two nodes.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// Create channel between nodes.
txHash := sha256.Sum256([]byte{0})
op := wire.OutPoint{
Hash: txHash,
Index: 0,
}
channel, chanID := createEdge(
uint32(0), 0, 0, 0, node1, node2,
)
if err := graph.AddChannelEdge(&channel); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
// Ensure that channel is reported with unknown policies.
checkPolicies := func(node *LightningNode, expectedIn, expectedOut bool) {
calls := 0
node.ForEachChannel(nil, func(_ *bbolt.Tx, _ *ChannelEdgeInfo,
outEdge, inEdge *ChannelEdgePolicy) error {
if !expectedOut && outEdge != nil {
t.Fatalf("Expected no outgoing policy")
}
if expectedOut && outEdge == nil {
t.Fatalf("Expected an outgoing policy")
}
if !expectedIn && inEdge != nil {
t.Fatalf("Expected no incoming policy")
}
if expectedIn && inEdge == nil {
t.Fatalf("Expected an incoming policy")
}
calls++
return nil
})
if calls != 1 {
t.Fatalf("Expected only one callback call")
}
}
checkPolicies(node2, false, false)
// Only create an edge policy for node1 and leave the policy for node2
// unknown.
updateTime := time.Unix(1234, 0)
edgePolicy := newEdgePolicy(
chanID.ToUint64(), op, db, updateTime.Unix(),
)
edgePolicy.ChannelFlags = 0
edgePolicy.Node = node2
edgePolicy.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edgePolicy); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
checkPolicies(node1, false, true)
checkPolicies(node2, true, false)
// Create second policy and assert that both policies are reported
// as present.
edgePolicy = newEdgePolicy(
chanID.ToUint64(), op, db, updateTime.Unix(),
)
edgePolicy.ChannelFlags = 1
edgePolicy.Node = node1
edgePolicy.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edgePolicy); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
checkPolicies(node1, true, true)
checkPolicies(node2, true, true)
}
// TestChannelEdgePruningUpdateIndexDeletion tests that once edges are deleted
// from the graph, then their entries within the update index are also cleaned
// up.
func TestChannelEdgePruningUpdateIndexDeletion(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
sourceNode, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create source node: %v", err)
}
if err := graph.SetSourceNode(sourceNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
// We'll first populate our graph with two nodes. All channels created
// below will be made between these two nodes.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// With the two nodes created, we'll now create a random channel, as
// well as two edges in the database with distinct update times.
edgeInfo, chanID := createEdge(100, 0, 0, 0, node1, node2)
if err := graph.AddChannelEdge(&edgeInfo); err != nil {
t.Fatalf("unable to add edge: %v", err)
}
edge1 := randEdgePolicy(chanID.ToUint64(), edgeInfo.ChannelPoint, db)
edge1.ChannelFlags = 0
edge1.Node = node1
edge1.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
edge2 := randEdgePolicy(chanID.ToUint64(), edgeInfo.ChannelPoint, db)
edge2.ChannelFlags = 1
edge2.Node = node2
edge2.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge2); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// checkIndexTimestamps is a helper function that checks the edge update
// index only includes the given timestamps.
checkIndexTimestamps := func(timestamps ...uint64) {
timestampSet := make(map[uint64]struct{})
for _, t := range timestamps {
timestampSet[t] = struct{}{}
}
err := db.View(func(tx *bbolt.Tx) error {
edges := tx.Bucket(edgeBucket)
if edges == nil {
return ErrGraphNoEdgesFound
}
edgeUpdateIndex := edges.Bucket(edgeUpdateIndexBucket)
if edgeUpdateIndex == nil {
return ErrGraphNoEdgesFound
}
numEntries := edgeUpdateIndex.Stats().KeyN
expectedEntries := len(timestampSet)
if numEntries != expectedEntries {
return fmt.Errorf("expected %v entries in the "+
"update index, got %v", expectedEntries,
numEntries)
}
return edgeUpdateIndex.ForEach(func(k, _ []byte) error {
t := byteOrder.Uint64(k[:8])
if _, ok := timestampSet[t]; !ok {
return fmt.Errorf("found unexpected "+
"timestamp "+"%d", t)
}
return nil
})
})
if err != nil {
t.Fatal(err)
}
}
// With both edges policies added, we'll make sure to check they exist
// within the edge update index.
checkIndexTimestamps(
uint64(edge1.LastUpdate.Unix()),
uint64(edge2.LastUpdate.Unix()),
)
// Now, we'll update the edge policies to ensure the old timestamps are
// removed from the update index.
edge1.ChannelFlags = 2
edge1.LastUpdate = time.Now()
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
edge2.ChannelFlags = 3
edge2.LastUpdate = edge1.LastUpdate.Add(time.Hour)
if err := graph.UpdateEdgePolicy(edge2); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// With the policies updated, we should now be able to find their
// updated entries within the update index.
checkIndexTimestamps(
uint64(edge1.LastUpdate.Unix()),
uint64(edge2.LastUpdate.Unix()),
)
// Now we'll prune the graph, removing the edges, and also the update
// index entries from the database all together.
var blockHash chainhash.Hash
copy(blockHash[:], bytes.Repeat([]byte{2}, 32))
_, err = graph.PruneGraph(
[]*wire.OutPoint{&edgeInfo.ChannelPoint}, &blockHash, 101,
)
if err != nil {
t.Fatalf("unable to prune graph: %v", err)
}
// Finally, we'll check the database state one last time to conclude
// that we should no longer be able to locate _any_ entries within the
// edge update index.
checkIndexTimestamps()
}
// TestPruneGraphNodes tests that unconnected vertexes are pruned via the
// PruneSyncState method.
func TestPruneGraphNodes(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
// We'll start off by inserting our source node, to ensure that it's
// the only node left after we prune the graph.
graph := db.ChannelGraph()
sourceNode, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create source node: %v", err)
}
if err := graph.SetSourceNode(sourceNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
// With the source node inserted, we'll now add three nodes to the
// channel graph, at the end of the scenario, only two of these nodes
// should still be in the graph.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node3, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node3); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// We'll now add a new edge to the graph, but only actually advertise
// the edge of *one* of the nodes.
edgeInfo, chanID := createEdge(100, 0, 0, 0, node1, node2)
if err := graph.AddChannelEdge(&edgeInfo); err != nil {
t.Fatalf("unable to add edge: %v", err)
}
// We'll now insert an advertised edge, but it'll only be the edge that
// points from the first to the second node.
edge1 := randEdgePolicy(chanID.ToUint64(), edgeInfo.ChannelPoint, db)
edge1.ChannelFlags = 0
edge1.Node = node1
edge1.SigBytes = testSig.Serialize()
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// We'll now initiate a around of graph pruning.
if err := graph.PruneGraphNodes(); err != nil {
t.Fatalf("unable to prune graph nodes: %v", err)
}
// At this point, there should be 3 nodes left in the graph still: the
// source node (which can't be pruned), and node 1+2. Nodes 1 and two
// should still be left in the graph as there's half of an advertised
// edge between them.
assertNumNodes(t, graph, 3)
// Finally, we'll ensure that node3, the only fully unconnected node as
// properly deleted from the graph and not another node in its place.
node3Pub, err := node3.PubKey()
if err != nil {
t.Fatalf("unable to fetch the pubkey of node3: %v", err)
}
if _, err := graph.FetchLightningNode(node3Pub); err == nil {
t.Fatalf("node 3 should have been deleted!")
}
}
// TestAddChannelEdgeShellNodes tests that when we attempt to add a ChannelEdge
// to the graph, one or both of the nodes the edge involves aren't found in the
// database, then shell edges are created for each node if needed.
func TestAddChannelEdgeShellNodes(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// To start, we'll create two nodes, and only add one of them to the
// channel graph.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
// We'll now create an edge between the two nodes, as a result, node2
// should be inserted into the database as a shell node.
edgeInfo, _ := createEdge(100, 0, 0, 0, node1, node2)
if err := graph.AddChannelEdge(&edgeInfo); err != nil {
t.Fatalf("unable to add edge: %v", err)
}
node1Pub, err := node1.PubKey()
if err != nil {
t.Fatalf("unable to parse node 1 pub: %v", err)
}
node2Pub, err := node2.PubKey()
if err != nil {
t.Fatalf("unable to parse node 2 pub: %v", err)
}
// Ensure that node1 was inserted as a full node, while node2 only has
// a shell node present.
node1, err = graph.FetchLightningNode(node1Pub)
if err != nil {
t.Fatalf("unable to fetch node1: %v", err)
}
if !node1.HaveNodeAnnouncement {
t.Fatalf("have shell announcement for node1, shouldn't")
}
node2, err = graph.FetchLightningNode(node2Pub)
if err != nil {
t.Fatalf("unable to fetch node2: %v", err)
}
if node2.HaveNodeAnnouncement {
t.Fatalf("should have shell announcement for node2, but is full")
}
}
// TestNodePruningUpdateIndexDeletion tests that once a node has been removed
// from the channel graph, we also remove the entry from the update index as
// well.
func TestNodePruningUpdateIndexDeletion(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'll first populate our graph with a single node that will be
// removed shortly.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
// We'll confirm that we can retrieve the node using
// NodeUpdatesInHorizon, using a time that's slightly beyond the last
// update time of our test node.
startTime := time.Unix(9, 0)
endTime := node1.LastUpdate.Add(time.Minute)
nodesInHorizon, err := graph.NodeUpdatesInHorizon(startTime, endTime)
if err != nil {
t.Fatalf("unable to fetch nodes in horizon: %v", err)
}
// We should only have a single node, and that node should exactly
// match the node we just inserted.
if len(nodesInHorizon) != 1 {
t.Fatalf("should have 1 nodes instead have: %v",
len(nodesInHorizon))
}
if err := compareNodes(node1, &nodesInHorizon[0]); err != nil {
t.Fatalf("nodes don't match: %v", err)
}
// We'll now delete the node from the graph, this should result in it
// being removed from the update index as well.
nodePub, _ := node1.PubKey()
if err := graph.DeleteLightningNode(nodePub); err != nil {
t.Fatalf("unable to delete node: %v", err)
}
// Now that the node has been deleted, we'll again query the nodes in
// the horizon. This time we should have no nodes at all.
nodesInHorizon, err = graph.NodeUpdatesInHorizon(startTime, endTime)
if err != nil {
t.Fatalf("unable to fetch nodes in horizon: %v", err)
}
if len(nodesInHorizon) != 0 {
t.Fatalf("should have zero nodes instead have: %v",
len(nodesInHorizon))
}
}
// TestNodeIsPublic ensures that we properly detect nodes that are seen as
// public within the network graph.
func TestNodeIsPublic(t *testing.T) {
t.Parallel()
// We'll start off the test by creating a small network of 3
// participants with the following graph:
//
// Alice <-> Bob <-> Carol
//
// We'll need to create a separate database and channel graph for each
// participant to replicate real-world scenarios (private edges being in
// some graphs but not others, etc.).
aliceDB, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
aliceNode, err := createTestVertex(aliceDB)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
aliceGraph := aliceDB.ChannelGraph()
if err := aliceGraph.SetSourceNode(aliceNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
bobDB, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
bobNode, err := createTestVertex(bobDB)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
bobGraph := bobDB.ChannelGraph()
if err := bobGraph.SetSourceNode(bobNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
carolDB, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
carolNode, err := createTestVertex(carolDB)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
carolGraph := carolDB.ChannelGraph()
if err := carolGraph.SetSourceNode(carolNode); err != nil {
t.Fatalf("unable to set source node: %v", err)
}
aliceBobEdge, _ := createEdge(10, 0, 0, 0, aliceNode, bobNode)
bobCarolEdge, _ := createEdge(10, 1, 0, 1, bobNode, carolNode)
// After creating all of our nodes and edges, we'll add them to each
// participant's graph.
nodes := []*LightningNode{aliceNode, bobNode, carolNode}
edges := []*ChannelEdgeInfo{&aliceBobEdge, &bobCarolEdge}
dbs := []*DB{aliceDB, bobDB, carolDB}
graphs := []*ChannelGraph{aliceGraph, bobGraph, carolGraph}
for i, graph := range graphs {
for _, node := range nodes {
node.db = dbs[i]
if err := graph.AddLightningNode(node); err != nil {
t.Fatalf("unable to add node: %v", err)
}
}
for _, edge := range edges {
edge.db = dbs[i]
if err := graph.AddChannelEdge(edge); err != nil {
t.Fatalf("unable to add edge: %v", err)
}
}
}
// checkNodes is a helper closure that will be used to assert that the
// given nodes are seen as public/private within the given graphs.
checkNodes := func(nodes []*LightningNode, graphs []*ChannelGraph,
public bool) {
t.Helper()
for _, node := range nodes {
for _, graph := range graphs {
isPublic, err := graph.IsPublicNode(node.PubKeyBytes)
if err != nil {
t.Fatalf("unable to determine if pivot "+
"is public: %v", err)
}
switch {
case isPublic && !public:
t.Fatalf("expected %x to be private",
node.PubKeyBytes)
case !isPublic && public:
t.Fatalf("expected %x to be public",
node.PubKeyBytes)
}
}
}
}
// Due to the way the edges were set up above, we'll make sure each node
// can correctly determine that every other node is public.
checkNodes(nodes, graphs, true)
// Now, we'll remove the edge between Alice and Bob from everyone's
// graph. This will make Alice be seen as a private node as it no longer
// has any advertised edges.
for _, graph := range graphs {
err := graph.DeleteChannelEdges(aliceBobEdge.ChannelID)
if err != nil {
t.Fatalf("unable to remove edge: %v", err)
}
}
checkNodes(
[]*LightningNode{aliceNode},
[]*ChannelGraph{bobGraph, carolGraph},
false,
)
// We'll also make the edge between Bob and Carol private. Within Bob's
// and Carol's graph, the edge will exist, but it will not have a proof
// that allows it to be advertised. Within Alice's graph, we'll
// completely remove the edge as it is not possible for her to know of
// it without it being advertised.
for i, graph := range graphs {
err := graph.DeleteChannelEdges(bobCarolEdge.ChannelID)
if err != nil {
t.Fatalf("unable to remove edge: %v", err)
}
if graph == aliceGraph {
continue
}
bobCarolEdge.AuthProof = nil
bobCarolEdge.db = dbs[i]
if err := graph.AddChannelEdge(&bobCarolEdge); err != nil {
t.Fatalf("unable to add edge: %v", err)
}
}
// With the modifications above, Bob should now be seen as a private
// node from both Alice's and Carol's perspective.
checkNodes(
[]*LightningNode{bobNode},
[]*ChannelGraph{aliceGraph, carolGraph},
false,
)
}
// TestEdgePolicyMissingMaxHtcl tests that if we find a ChannelEdgePolicy in
// the DB that indicates that it should support the htlc_maximum_value_msat
// field, but it is not part of the opaque data, then we'll handle it as it is
// unknown. It also checks that we are correctly able to overwrite it when we
// receive the proper update.
func TestEdgePolicyMissingMaxHtcl(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test database: %v", err)
}
graph := db.ChannelGraph()
// We'd like to test the update of edges inserted into the database, so
// we create two vertexes to connect.
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
if err := graph.AddLightningNode(node1); err != nil {
t.Fatalf("unable to add node: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test node: %v", err)
}
edgeInfo, edge1, edge2 := createChannelEdge(db, node1, node2)
if err := graph.AddLightningNode(node2); err != nil {
t.Fatalf("unable to add node: %v", err)
}
if err := graph.AddChannelEdge(edgeInfo); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
chanID := edgeInfo.ChannelID
from := edge2.Node.PubKeyBytes[:]
to := edge1.Node.PubKeyBytes[:]
// We'll remove the no max_htlc field from the first edge policy, and
// all other opaque data, and serialize it.
edge1.MessageFlags = 0
edge1.ExtraOpaqueData = nil
var b bytes.Buffer
err = serializeChanEdgePolicy(&b, edge1, to)
if err != nil {
t.Fatalf("unable to serialize policy")
}
// Set the max_htlc field. The extra bytes added to the serialization
// will be the opaque data containing the serialized field.
edge1.MessageFlags = lnwire.ChanUpdateOptionMaxHtlc
edge1.MaxHTLC = 13928598
var b2 bytes.Buffer
err = serializeChanEdgePolicy(&b2, edge1, to)
if err != nil {
t.Fatalf("unable to serialize policy")
}
withMaxHtlc := b2.Bytes()
// Remove the opaque data from the serialization.
stripped := withMaxHtlc[:len(b.Bytes())]
// Attempting to deserialize these bytes should return an error.
r := bytes.NewReader(stripped)
err = db.View(func(tx *bbolt.Tx) error {
nodes := tx.Bucket(nodeBucket)
if nodes == nil {
return ErrGraphNotFound
}
_, err = deserializeChanEdgePolicy(r, nodes)
if err != ErrEdgePolicyOptionalFieldNotFound {
t.Fatalf("expected "+
"ErrEdgePolicyOptionalFieldNotFound, got %v",
err)
}
return nil
})
if err != nil {
t.Fatalf("error reading db: %v", err)
}
// Put the stripped bytes in the DB.
err = db.Update(func(tx *bbolt.Tx) error {
edges := tx.Bucket(edgeBucket)
if edges == nil {
return ErrEdgeNotFound
}
edgeIndex := edges.Bucket(edgeIndexBucket)
if edgeIndex == nil {
return ErrEdgeNotFound
}
var edgeKey [33 + 8]byte
copy(edgeKey[:], from)
byteOrder.PutUint64(edgeKey[33:], edge1.ChannelID)
var scratch [8]byte
var indexKey [8 + 8]byte
copy(indexKey[:], scratch[:])
byteOrder.PutUint64(indexKey[8:], edge1.ChannelID)
updateIndex, err := edges.CreateBucketIfNotExists(edgeUpdateIndexBucket)
if err != nil {
return err
}
if err := updateIndex.Put(indexKey[:], nil); err != nil {
return err
}
return edges.Put(edgeKey[:], stripped)
})
if err != nil {
t.Fatalf("error writing db: %v", err)
}
// And add the second, unmodified edge.
if err := graph.UpdateEdgePolicy(edge2); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
// Attempt to fetch the edge and policies from the DB. Since the policy
// we added is invalid according to the new format, it should be as we
// are not aware of the policy (indicated by the policy returned being
// nil)
dbEdgeInfo, dbEdge1, dbEdge2, err := graph.FetchChannelEdgesByID(chanID)
if err != nil {
t.Fatalf("unable to fetch channel by ID: %v", err)
}
// The first edge should have a nil-policy returned
if dbEdge1 != nil {
t.Fatalf("expected db edge to be nil")
}
if err := compareEdgePolicies(dbEdge2, edge2); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
assertEdgeInfoEqual(t, dbEdgeInfo, edgeInfo)
// Now add the original, unmodified edge policy, and make sure the edge
// policies then become fully populated.
if err := graph.UpdateEdgePolicy(edge1); err != nil {
t.Fatalf("unable to update edge: %v", err)
}
dbEdgeInfo, dbEdge1, dbEdge2, err = graph.FetchChannelEdgesByID(chanID)
if err != nil {
t.Fatalf("unable to fetch channel by ID: %v", err)
}
if err := compareEdgePolicies(dbEdge1, edge1); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
if err := compareEdgePolicies(dbEdge2, edge2); err != nil {
t.Fatalf("edge doesn't match: %v", err)
}
assertEdgeInfoEqual(t, dbEdgeInfo, edgeInfo)
}
// TestGraphZombieIndex ensures that we can mark edges correctly as zombie/live.
func TestGraphZombieIndex(t *testing.T) {
t.Parallel()
// We'll start by creating our test graph along with a test edge.
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to create test database: %v", err)
}
graph := db.ChannelGraph()
node1, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test vertex: %v", err)
}
node2, err := createTestVertex(db)
if err != nil {
t.Fatalf("unable to create test vertex: %v", err)
}
// Swap the nodes if the second's pubkey is smaller than the first.
// Without this, the comparisons at the end will fail probabilistically.
if bytes.Compare(node2.PubKeyBytes[:], node1.PubKeyBytes[:]) < 0 {
node1, node2 = node2, node1
}
edge, _, _ := createChannelEdge(db, node1, node2)
if err := graph.AddChannelEdge(edge); err != nil {
t.Fatalf("unable to create channel edge: %v", err)
}
// Since the edge is known the graph and it isn't a zombie, IsZombieEdge
// should not report the channel as a zombie.
isZombie, _, _ := graph.IsZombieEdge(edge.ChannelID)
if isZombie {
t.Fatal("expected edge to not be marked as zombie")
}
// If we delete the edge and mark it as a zombie, then we should expect
// to see it within the index.
err = graph.DeleteChannelEdges(edge.ChannelID)
if err != nil {
t.Fatalf("unable to mark edge as zombie: %v", err)
}
isZombie, pubKey1, pubKey2 := graph.IsZombieEdge(edge.ChannelID)
if !isZombie {
t.Fatal("expected edge to be marked as zombie")
}
if pubKey1 != node1.PubKeyBytes {
t.Fatalf("expected pubKey1 %x, got %x", node1.PubKeyBytes,
pubKey1)
}
if pubKey2 != node2.PubKeyBytes {
t.Fatalf("expected pubKey2 %x, got %x", node2.PubKeyBytes,
pubKey2)
}
// Similarly, if we mark the same edge as live, we should no longer see
// it within the index.
if err := graph.MarkEdgeLive(edge.ChannelID); err != nil {
t.Fatalf("unable to mark edge as live: %v", err)
}
isZombie, _, _ = graph.IsZombieEdge(edge.ChannelID)
if isZombie {
t.Fatal("expected edge to not be marked as zombie")
}
}
// compareNodes is used to compare two LightningNodes while excluding the
// Features struct, which cannot be compared as the semantics for reserializing
// the featuresMap have not been defined.
func compareNodes(a, b *LightningNode) error {
if a.LastUpdate != b.LastUpdate {
return fmt.Errorf("node LastUpdate doesn't match: expected %v, \n"+
"got %v", a.LastUpdate, b.LastUpdate)
}
if !reflect.DeepEqual(a.Addresses, b.Addresses) {
return fmt.Errorf("Addresses doesn't match: expected %#v, \n "+
"got %#v", a.Addresses, b.Addresses)
}
if !reflect.DeepEqual(a.PubKeyBytes, b.PubKeyBytes) {
return fmt.Errorf("PubKey doesn't match: expected %#v, \n "+
"got %#v", a.PubKeyBytes, b.PubKeyBytes)
}
if !reflect.DeepEqual(a.Color, b.Color) {
return fmt.Errorf("Color doesn't match: expected %#v, \n "+
"got %#v", a.Color, b.Color)
}
if !reflect.DeepEqual(a.Alias, b.Alias) {
return fmt.Errorf("Alias doesn't match: expected %#v, \n "+
"got %#v", a.Alias, b.Alias)
}
if !reflect.DeepEqual(a.db, b.db) {
return fmt.Errorf("db doesn't match: expected %#v, \n "+
"got %#v", a.db, b.db)
}
if !reflect.DeepEqual(a.HaveNodeAnnouncement, b.HaveNodeAnnouncement) {
return fmt.Errorf("HaveNodeAnnouncement doesn't match: expected %#v, \n "+
"got %#v", a.HaveNodeAnnouncement, b.HaveNodeAnnouncement)
}
if !bytes.Equal(a.ExtraOpaqueData, b.ExtraOpaqueData) {
return fmt.Errorf("extra data doesn't match: %v vs %v",
a.ExtraOpaqueData, b.ExtraOpaqueData)
}
return nil
}
// compareEdgePolicies is used to compare two ChannelEdgePolices using
// compareNodes, so as to exclude comparisons of the Nodes' Features struct.
func compareEdgePolicies(a, b *ChannelEdgePolicy) error {
if a.ChannelID != b.ChannelID {
return fmt.Errorf("ChannelID doesn't match: expected %v, "+
"got %v", a.ChannelID, b.ChannelID)
}
if !reflect.DeepEqual(a.LastUpdate, b.LastUpdate) {
return fmt.Errorf("edge LastUpdate doesn't match: expected %#v, \n "+
"got %#v", a.LastUpdate, b.LastUpdate)
}
if a.MessageFlags != b.MessageFlags {
return fmt.Errorf("MessageFlags doesn't match: expected %v, "+
"got %v", a.MessageFlags, b.MessageFlags)
}
if a.ChannelFlags != b.ChannelFlags {
return fmt.Errorf("ChannelFlags doesn't match: expected %v, "+
"got %v", a.ChannelFlags, b.ChannelFlags)
}
if a.TimeLockDelta != b.TimeLockDelta {
return fmt.Errorf("TimeLockDelta doesn't match: expected %v, "+
"got %v", a.TimeLockDelta, b.TimeLockDelta)
}
if a.MinHTLC != b.MinHTLC {
return fmt.Errorf("MinHTLC doesn't match: expected %v, "+
"got %v", a.MinHTLC, b.MinHTLC)
}
if a.MaxHTLC != b.MaxHTLC {
return fmt.Errorf("MaxHTLC doesn't match: expected %v, "+
"got %v", a.MaxHTLC, b.MaxHTLC)
}
if a.FeeBaseMSat != b.FeeBaseMSat {
return fmt.Errorf("FeeBaseMSat doesn't match: expected %v, "+
"got %v", a.FeeBaseMSat, b.FeeBaseMSat)
}
if a.FeeProportionalMillionths != b.FeeProportionalMillionths {
return fmt.Errorf("FeeProportionalMillionths doesn't match: "+
"expected %v, got %v", a.FeeProportionalMillionths,
b.FeeProportionalMillionths)
}
if !bytes.Equal(a.ExtraOpaqueData, b.ExtraOpaqueData) {
return fmt.Errorf("extra data doesn't match: %v vs %v",
a.ExtraOpaqueData, b.ExtraOpaqueData)
}
if err := compareNodes(a.Node, b.Node); err != nil {
return err
}
if !reflect.DeepEqual(a.db, b.db) {
return fmt.Errorf("db doesn't match: expected %#v, \n "+
"got %#v", a.db, b.db)
}
return nil
}
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