lnd.xprv/chainntnfs/bitcoindnotify/bitcoind_test.go

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// +build dev
package bitcoindnotify
import (
"bytes"
"io/ioutil"
"testing"
"time"
"github.com/btcsuite/btcd/chaincfg/chainhash"
"github.com/btcsuite/btcd/integration/rpctest"
"github.com/btcsuite/btcwallet/chain"
"github.com/lightningnetwork/lnd/chainntnfs"
"github.com/lightningnetwork/lnd/channeldb"
)
var (
testScript = []byte{
// OP_HASH160
0xA9,
// OP_DATA_20
0x14,
// <20-byte hash>
0xec, 0x6f, 0x7a, 0x5a, 0xa8, 0xf2, 0xb1, 0x0c, 0xa5, 0x15,
0x04, 0x52, 0x3a, 0x60, 0xd4, 0x03, 0x06, 0xf6, 0x96, 0xcd,
// OP_EQUAL
0x87,
}
)
func initHintCache(t *testing.T) *chainntnfs.HeightHintCache {
t.Helper()
tempDir, err := ioutil.TempDir("", "kek")
if err != nil {
t.Fatalf("unable to create temp dir: %v", err)
}
db, err := channeldb.Open(tempDir)
if err != nil {
t.Fatalf("unable to create db: %v", err)
}
testCfg := chainntnfs.CacheConfig{
QueryDisable: false,
}
hintCache, err := chainntnfs.NewHeightHintCache(testCfg, db)
if err != nil {
t.Fatalf("unable to create hint cache: %v", err)
}
return hintCache
}
// setUpNotifier is a helper function to start a new notifier backed by a
// bitcoind driver.
func setUpNotifier(t *testing.T, bitcoindConn *chain.BitcoindConn,
spendHintCache chainntnfs.SpendHintCache,
confirmHintCache chainntnfs.ConfirmHintCache) *BitcoindNotifier {
t.Helper()
notifier := New(
bitcoindConn, chainntnfs.NetParams, spendHintCache,
confirmHintCache,
)
if err := notifier.Start(); err != nil {
t.Fatalf("unable to start notifier: %v", err)
}
return notifier
}
// syncNotifierWithMiner is a helper method that attempts to wait until the
// notifier is synced (in terms of the chain) with the miner.
func syncNotifierWithMiner(t *testing.T, notifier *BitcoindNotifier,
miner *rpctest.Harness) uint32 {
t.Helper()
_, minerHeight, err := miner.Node.GetBestBlock()
if err != nil {
t.Fatalf("unable to retrieve miner's current height: %v", err)
}
timeout := time.After(10 * time.Second)
for {
_, bitcoindHeight, err := notifier.chainConn.GetBestBlock()
if err != nil {
t.Fatalf("unable to retrieve bitcoind's current "+
"height: %v", err)
}
if bitcoindHeight == minerHeight {
return uint32(bitcoindHeight)
}
select {
case <-time.After(100 * time.Millisecond):
case <-timeout:
t.Fatalf("timed out waiting to sync notifier")
}
}
}
// TestHistoricalConfDetailsTxIndex ensures that we correctly retrieve
// historical confirmation details using the backend node's txindex.
func TestHistoricalConfDetailsTxIndex(t *testing.T) {
miner, tearDown := chainntnfs.NewMiner(
t, []string{"--txindex"}, true, 25,
)
defer tearDown()
bitcoindConn, cleanUp := chainntnfs.NewBitcoindBackend(
t, miner.P2PAddress(), true,
)
defer cleanUp()
hintCache := initHintCache(t)
notifier := setUpNotifier(t, bitcoindConn, hintCache, hintCache)
defer notifier.Stop()
syncNotifierWithMiner(t, notifier, miner)
// A transaction unknown to the node should not be found within the
// txindex even if it is enabled, so we should not proceed with any
// fallback methods.
var unknownHash chainhash.Hash
copy(unknownHash[:], bytes.Repeat([]byte{0x10}, 32))
unknownConfReq, err := chainntnfs.NewConfRequest(&unknownHash, testScript)
if err != nil {
t.Fatalf("unable to create conf request: %v", err)
}
_, txStatus, err := notifier.historicalConfDetails(unknownConfReq, 0, 0)
if err != nil {
t.Fatalf("unable to retrieve historical conf details: %v", err)
}
switch txStatus {
case chainntnfs.TxNotFoundIndex:
case chainntnfs.TxNotFoundManually:
t.Fatal("should not have proceeded with fallback method, but did")
default:
t.Fatal("should not have found non-existent transaction, but did")
}
// Now, we'll create a test transaction, confirm it, and attempt to
// retrieve its confirmation details.
txid, pkScript, err := chainntnfs.GetTestTxidAndScript(miner)
if err != nil {
t.Fatalf("unable to create tx: %v", err)
}
if err := chainntnfs.WaitForMempoolTx(miner, txid); err != nil {
t.Fatal(err)
}
confReq, err := chainntnfs.NewConfRequest(txid, pkScript)
if err != nil {
t.Fatalf("unable to create conf request: %v", err)
}
// The transaction should be found in the mempool at this point.
_, txStatus, err = notifier.historicalConfDetails(confReq, 0, 0)
if err != nil {
t.Fatalf("unable to retrieve historical conf details: %v", err)
}
// Since it has yet to be included in a block, it should have been found
// within the mempool.
switch txStatus {
case chainntnfs.TxFoundMempool:
default:
t.Fatal("should have found the transaction within the "+
"mempool, but did not: %v", txStatus)
}
if _, err := miner.Node.Generate(1); err != nil {
t.Fatalf("unable to generate block: %v", err)
}
// Ensure the notifier and miner are synced to the same height to ensure
// the txindex includes the transaction just mined.
syncNotifierWithMiner(t, notifier, miner)
_, txStatus, err = notifier.historicalConfDetails(confReq, 0, 0)
if err != nil {
t.Fatalf("unable to retrieve historical conf details: %v", err)
}
// Since the backend node's txindex is enabled and the transaction has
// confirmed, we should be able to retrieve it using the txindex.
switch txStatus {
case chainntnfs.TxFoundIndex:
default:
t.Fatal("should have found the transaction within the " +
"txindex, but did not")
}
}
// TestHistoricalConfDetailsNoTxIndex ensures that we correctly retrieve
// historical confirmation details using the set of fallback methods when the
// backend node's txindex is disabled.
func TestHistoricalConfDetailsNoTxIndex(t *testing.T) {
miner, tearDown := chainntnfs.NewMiner(t, nil, true, 25)
defer tearDown()
bitcoindConn, cleanUp := chainntnfs.NewBitcoindBackend(
t, miner.P2PAddress(), false,
)
defer cleanUp()
hintCache := initHintCache(t)
notifier := setUpNotifier(t, bitcoindConn, hintCache, hintCache)
defer notifier.Stop()
// Since the node has its txindex disabled, we fall back to scanning the
// chain manually. A transaction unknown to the network should not be
// found.
var unknownHash chainhash.Hash
copy(unknownHash[:], bytes.Repeat([]byte{0x10}, 32))
unknownConfReq, err := chainntnfs.NewConfRequest(&unknownHash, testScript)
if err != nil {
t.Fatalf("unable to create conf request: %v", err)
}
broadcastHeight := syncNotifierWithMiner(t, notifier, miner)
_, txStatus, err := notifier.historicalConfDetails(
unknownConfReq, uint32(broadcastHeight), uint32(broadcastHeight),
)
if err != nil {
t.Fatalf("unable to retrieve historical conf details: %v", err)
}
switch txStatus {
case chainntnfs.TxNotFoundManually:
case chainntnfs.TxNotFoundIndex:
t.Fatal("should have proceeded with fallback method, but did not")
default:
t.Fatal("should not have found non-existent transaction, but did")
}
// Now, we'll create a test transaction and attempt to retrieve its
// confirmation details. In order to fall back to manually scanning the
// chain, the transaction must be in the chain and not contain any
// unspent outputs. To ensure this, we'll create a transaction with only
// one output, which we will manually spend. The backend node's
// transaction index should also be disabled, which we've already
// ensured above.
outpoint, output, privKey := chainntnfs.CreateSpendableOutput(t, miner)
spendTx := chainntnfs.CreateSpendTx(t, outpoint, output, privKey)
spendTxHash, err := miner.Node.SendRawTransaction(spendTx, true)
if err != nil {
t.Fatalf("unable to broadcast tx: %v", err)
}
if err := chainntnfs.WaitForMempoolTx(miner, spendTxHash); err != nil {
t.Fatalf("tx not relayed to miner: %v", err)
}
if _, err := miner.Node.Generate(1); err != nil {
t.Fatalf("unable to generate block: %v", err)
}
// Ensure the notifier and miner are synced to the same height to ensure
// we can find the transaction when manually scanning the chain.
confReq, err := chainntnfs.NewConfRequest(&outpoint.Hash, output.PkScript)
if err != nil {
t.Fatalf("unable to create conf request: %v", err)
}
currentHeight := syncNotifierWithMiner(t, notifier, miner)
_, txStatus, err = notifier.historicalConfDetails(
confReq, uint32(broadcastHeight), uint32(currentHeight),
)
if err != nil {
t.Fatalf("unable to retrieve historical conf details: %v", err)
}
// Since the backend node's txindex is disabled and the transaction has
// confirmed, we should be able to find it by falling back to scanning
// the chain manually.
switch txStatus {
case chainntnfs.TxFoundManually:
default:
t.Fatal("should have found the transaction by manually " +
"scanning the chain, but did not")
}
}