867d8524bf
In this commit, we modify our TxConfNotifier struct to allow handling notification registrations asynchronously. The Register method has been refactored into two: Register and UpdateConfDetails. In the case that a transaction we registered for notifications on has already confirmed, we'll need to determine its confirmation details on our own. Once done, this can be provided within UpdateConfDetails. This change will pave down the road for our different chain notifiers to handle potentially long rescans asynchronously to prevent blocking the caller.
708 lines
20 KiB
Go
708 lines
20 KiB
Go
package chainntnfs_test
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import (
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"testing"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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"github.com/lightningnetwork/lnd/chainntnfs"
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)
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var zeroHash chainhash.Hash
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// TestTxConfFutureDispatch tests that the TxConfNotifier dispatches
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// registered notifications when the transaction confirms after registration.
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func TestTxConfFutureDispatch(t *testing.T) {
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t.Parallel()
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const (
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tx1NumConfs uint32 = 1
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tx2NumConfs uint32 = 2
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)
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var (
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tx1 = wire.MsgTx{Version: 1}
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tx2 = wire.MsgTx{Version: 2}
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tx3 = wire.MsgTx{Version: 3}
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)
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txConfNotifier := chainntnfs.NewTxConfNotifier(10, 100)
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// Create the test transactions and register them with the
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// TxConfNotifier before including them in a block to receive future
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// notifications.
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tx1Hash := tx1.TxHash()
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ntfn1 := chainntnfs.ConfNtfn{
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TxID: &tx1Hash,
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NumConfirmations: tx1NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx1NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn1); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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tx2Hash := tx2.TxHash()
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ntfn2 := chainntnfs.ConfNtfn{
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TxID: &tx2Hash,
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NumConfirmations: tx2NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx2NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn2); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// We should not receive any notifications from both transactions
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// since they have not been included in a block yet.
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select {
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case <-ntfn1.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx1")
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case txConf := <-ntfn1.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx1: %v", txConf)
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default:
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}
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select {
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case <-ntfn2.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx2")
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case txConf := <-ntfn2.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx2: %v", txConf)
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default:
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}
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// Include the transactions in a block and add it to the TxConfNotifier.
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// This should confirm tx1, but not tx2.
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block1 := btcutil.NewBlock(&wire.MsgBlock{
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Transactions: []*wire.MsgTx{&tx1, &tx2, &tx3},
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})
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err := txConfNotifier.ConnectTip(
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block1.Hash(), 11, block1.Transactions(),
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)
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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// We should only receive one update for tx1 since it only requires
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// one confirmation and it already met it.
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select {
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case numConfsLeft := <-ntfn1.Event.Updates:
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const expected = 0
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if numConfsLeft != expected {
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t.Fatalf("Received incorrect confirmation update: tx1 "+
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"expected %d confirmations left, got %d",
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expected, numConfsLeft)
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}
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default:
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t.Fatal("Expected confirmation update for tx1")
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}
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// A confirmation notification for this tranaction should be dispatched,
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// as it only required one confirmation.
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select {
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case txConf := <-ntfn1.Event.Confirmed:
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expectedConf := chainntnfs.TxConfirmation{
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BlockHash: block1.Hash(),
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BlockHeight: 11,
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TxIndex: 0,
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}
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assertEqualTxConf(t, txConf, &expectedConf)
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default:
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t.Fatalf("Expected confirmation for tx1")
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}
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// We should only receive one update for tx2 since it only has one
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// confirmation so far and it requires two.
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select {
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case numConfsLeft := <-ntfn2.Event.Updates:
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const expected = 1
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if numConfsLeft != expected {
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t.Fatalf("Received incorrect confirmation update: tx2 "+
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"expected %d confirmations left, got %d",
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expected, numConfsLeft)
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}
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default:
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t.Fatal("Expected confirmation update for tx2")
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}
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// A confirmation notification for tx2 should not be dispatched yet, as
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// it requires one more confirmation.
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select {
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case txConf := <-ntfn2.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx2: %v", txConf)
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default:
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}
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// Create a new block and add it to the TxConfNotifier at the next
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// height. This should confirm tx2.
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block2 := btcutil.NewBlock(&wire.MsgBlock{
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Transactions: []*wire.MsgTx{&tx3},
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})
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err = txConfNotifier.ConnectTip(block2.Hash(), 12, block2.Transactions())
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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// We should not receive any event notifications for tx1 since it has
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// already been confirmed.
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select {
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case <-ntfn1.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx1")
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case txConf := <-ntfn1.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx1: %v", txConf)
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default:
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}
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// We should only receive one update since the last at the new height,
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// indicating how many confirmations are still left.
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select {
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case numConfsLeft := <-ntfn2.Event.Updates:
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const expected = 0
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if numConfsLeft != expected {
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t.Fatalf("Received incorrect confirmation update: tx2 "+
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"expected %d confirmations left, got %d",
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expected, numConfsLeft)
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}
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default:
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t.Fatal("Expected confirmation update for tx2")
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}
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// A confirmation notification for tx2 should be dispatched, since it
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// now meets its required number of confirmations.
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select {
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case txConf := <-ntfn2.Event.Confirmed:
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expectedConf := chainntnfs.TxConfirmation{
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BlockHash: block1.Hash(),
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BlockHeight: 11,
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TxIndex: 1,
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}
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assertEqualTxConf(t, txConf, &expectedConf)
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default:
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t.Fatalf("Expected confirmation for tx2")
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}
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}
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// TestTxConfHistoricalDispatch tests that the TxConfNotifier dispatches
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// registered notifications when the transaction is confirmed before
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// registration.
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func TestTxConfHistoricalDispatch(t *testing.T) {
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t.Parallel()
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const (
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tx1NumConfs uint32 = 1
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tx2NumConfs uint32 = 3
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)
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var (
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tx1 = wire.MsgTx{Version: 1}
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tx2 = wire.MsgTx{Version: 2}
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tx3 = wire.MsgTx{Version: 3}
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)
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txConfNotifier := chainntnfs.NewTxConfNotifier(10, 100)
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// Create the test transactions at a height before the TxConfNotifier's
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// starting height so that they are confirmed once registering them.
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tx1Hash := tx1.TxHash()
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ntfn1 := chainntnfs.ConfNtfn{
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ConfID: 0,
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TxID: &tx1Hash,
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NumConfirmations: tx1NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx1NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn1); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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tx2Hash := tx2.TxHash()
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ntfn2 := chainntnfs.ConfNtfn{
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ConfID: 1,
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TxID: &tx2Hash,
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NumConfirmations: tx2NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx2NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn2); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// Update tx1 with its confirmation details. We should only receive one
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// update since it only requires one confirmation and it already met it.
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txConf1 := chainntnfs.TxConfirmation{
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BlockHash: &zeroHash,
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BlockHeight: 9,
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TxIndex: 1,
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}
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err := txConfNotifier.UpdateConfDetails(tx1Hash, ntfn1.ConfID, &txConf1)
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if err != nil {
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t.Fatalf("unable to update conf details: %v", err)
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}
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select {
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case numConfsLeft := <-ntfn1.Event.Updates:
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const expected = 0
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if numConfsLeft != expected {
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t.Fatalf("Received incorrect confirmation update: tx1 "+
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"expected %d confirmations left, got %d",
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expected, numConfsLeft)
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}
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default:
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t.Fatal("Expected confirmation update for tx1")
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}
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// A confirmation notification for tx1 should also be dispatched.
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select {
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case txConf := <-ntfn1.Event.Confirmed:
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assertEqualTxConf(t, txConf, &txConf1)
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default:
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t.Fatalf("Expected confirmation for tx1")
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}
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// Update tx2 with its confirmation details. This should not trigger a
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// confirmation notification since it hasn't reached its required number
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// of confirmations, but we should receive a confirmation update
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// indicating how many confirmation are left.
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txConf2 := chainntnfs.TxConfirmation{
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BlockHash: &zeroHash,
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BlockHeight: 9,
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TxIndex: 2,
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}
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err = txConfNotifier.UpdateConfDetails(tx2Hash, ntfn2.ConfID, &txConf2)
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if err != nil {
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t.Fatalf("unable to update conf details: %v", err)
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}
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select {
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case numConfsLeft := <-ntfn2.Event.Updates:
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const expected = 1
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if numConfsLeft != expected {
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t.Fatalf("Received incorrect confirmation update: tx2 "+
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"expected %d confirmations left, got %d",
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expected, numConfsLeft)
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}
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default:
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t.Fatal("Expected confirmation update for tx2")
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}
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select {
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case txConf := <-ntfn2.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx2: %v", txConf)
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default:
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}
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// Create a new block and add it to the TxConfNotifier at the next
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// height. This should confirm tx2.
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block := btcutil.NewBlock(&wire.MsgBlock{
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Transactions: []*wire.MsgTx{&tx3},
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})
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err = txConfNotifier.ConnectTip(block.Hash(), 11, block.Transactions())
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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// We should not receive any event notifications for tx1 since it has
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// already been confirmed.
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select {
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case <-ntfn1.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx1")
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case txConf := <-ntfn1.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx1: %v", txConf)
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default:
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}
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// We should only receive one update for tx2 since the last one,
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// indicating how many confirmations are still left.
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select {
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case numConfsLeft := <-ntfn2.Event.Updates:
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const expected = 0
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if numConfsLeft != expected {
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t.Fatalf("Received incorrect confirmation update: tx2 "+
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"expected %d confirmations left, got %d",
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expected, numConfsLeft)
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}
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default:
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t.Fatal("Expected confirmation update for tx2")
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}
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// A confirmation notification for tx2 should be dispatched, as it met
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// its required number of confirmations.
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select {
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case txConf := <-ntfn2.Event.Confirmed:
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assertEqualTxConf(t, txConf, &txConf2)
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default:
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t.Fatalf("Expected confirmation for tx2")
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}
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}
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// TestTxConfChainReorg tests that TxConfNotifier dispatches Confirmed and
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// NegativeConf notifications appropriately when there is a chain
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// reorganization.
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func TestTxConfChainReorg(t *testing.T) {
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t.Parallel()
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const (
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tx1NumConfs uint32 = 2
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tx2NumConfs uint32 = 1
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tx3NumConfs uint32 = 2
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)
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var (
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tx1 = wire.MsgTx{Version: 1}
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tx2 = wire.MsgTx{Version: 2}
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tx3 = wire.MsgTx{Version: 3}
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)
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txConfNotifier := chainntnfs.NewTxConfNotifier(7, 100)
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// Tx 1 will be confirmed in block 9 and requires 2 confs.
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tx1Hash := tx1.TxHash()
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ntfn1 := chainntnfs.ConfNtfn{
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TxID: &tx1Hash,
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NumConfirmations: tx1NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx1NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn1); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// Tx 2 will be confirmed in block 10 and requires 1 conf.
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tx2Hash := tx2.TxHash()
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ntfn2 := chainntnfs.ConfNtfn{
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TxID: &tx2Hash,
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NumConfirmations: tx2NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx2NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn2); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// Tx 3 will be confirmed in block 10 and requires 2 confs.
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tx3Hash := tx3.TxHash()
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ntfn3 := chainntnfs.ConfNtfn{
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TxID: &tx3Hash,
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NumConfirmations: tx3NumConfs,
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Event: chainntnfs.NewConfirmationEvent(tx3NumConfs),
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}
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if err := txConfNotifier.Register(&ntfn3); err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// Sync chain to block 10. Txs 1 & 2 should be confirmed.
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block1 := btcutil.NewBlock(&wire.MsgBlock{
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Transactions: []*wire.MsgTx{&tx1},
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})
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err := txConfNotifier.ConnectTip(nil, 8, block1.Transactions())
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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err = txConfNotifier.ConnectTip(nil, 9, nil)
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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block2 := btcutil.NewBlock(&wire.MsgBlock{
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Transactions: []*wire.MsgTx{&tx2, &tx3},
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})
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err = txConfNotifier.ConnectTip(nil, 10, block2.Transactions())
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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// We should receive two updates for tx1 since it requires two
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// confirmations and it has already met them.
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for i := 0; i < 2; i++ {
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select {
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case <-ntfn1.Event.Updates:
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default:
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t.Fatal("Expected confirmation update for tx1")
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}
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}
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// A confirmation notification for tx1 should be dispatched, as it met
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// its required number of confirmations.
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select {
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case <-ntfn1.Event.Confirmed:
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default:
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t.Fatalf("Expected confirmation for tx1")
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}
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// We should only receive one update for tx2 since it only requires
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// one confirmation and it already met it.
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select {
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case <-ntfn2.Event.Updates:
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default:
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t.Fatal("Expected confirmation update for tx2")
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}
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// A confirmation notification for tx2 should be dispatched, as it met
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// its required number of confirmations.
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select {
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case <-ntfn2.Event.Confirmed:
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default:
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t.Fatalf("Expected confirmation for tx2")
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}
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// We should only receive one update for tx3 since it only has one
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// confirmation so far and it requires two.
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select {
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case <-ntfn3.Event.Updates:
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default:
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t.Fatal("Expected confirmation update for tx3")
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}
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// A confirmation notification for tx3 should not be dispatched yet, as
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// it requires one more confirmation.
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select {
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case txConf := <-ntfn3.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx3: %v", txConf)
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default:
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}
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// The block that included tx2 and tx3 is disconnected and two next
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// blocks without them are connected.
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err = txConfNotifier.DisconnectTip(10)
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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err = txConfNotifier.ConnectTip(nil, 10, nil)
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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err = txConfNotifier.ConnectTip(nil, 11, nil)
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if err != nil {
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t.Fatalf("Failed to connect block: %v", err)
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}
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select {
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case reorgDepth := <-ntfn2.Event.NegativeConf:
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if reorgDepth != 1 {
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t.Fatalf("Incorrect value for negative conf notification: "+
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"expected %d, got %d", 1, reorgDepth)
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}
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default:
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t.Fatalf("Expected negative conf notification for tx1")
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}
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// We should not receive any event notifications from all of the
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// transactions because tx1 has already been confirmed and tx2 and tx3
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// have not been included in the chain since the reorg.
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select {
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case <-ntfn1.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx1")
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case txConf := <-ntfn1.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx1: %v", txConf)
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default:
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}
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select {
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case <-ntfn2.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx2")
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case txConf := <-ntfn2.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx2: %v", txConf)
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default:
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}
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select {
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case <-ntfn3.Event.Updates:
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t.Fatal("Received unexpected confirmation update for tx3")
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case txConf := <-ntfn3.Event.Confirmed:
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t.Fatalf("Received unexpected confirmation for tx3: %v", txConf)
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default:
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}
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// Now transactions 2 & 3 are re-included in a new block.
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block3 := btcutil.NewBlock(&wire.MsgBlock{
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Transactions: []*wire.MsgTx{&tx2, &tx3},
|
|
})
|
|
block4 := btcutil.NewBlock(&wire.MsgBlock{})
|
|
|
|
err = txConfNotifier.ConnectTip(block3.Hash(), 12, block3.Transactions())
|
|
if err != nil {
|
|
t.Fatalf("Failed to connect block: %v", err)
|
|
}
|
|
|
|
err = txConfNotifier.ConnectTip(block4.Hash(), 13, block4.Transactions())
|
|
if err != nil {
|
|
t.Fatalf("Failed to connect block: %v", err)
|
|
}
|
|
|
|
// We should only receive one update for tx2 since it only requires
|
|
// one confirmation and it already met it.
|
|
select {
|
|
case numConfsLeft := <-ntfn2.Event.Updates:
|
|
const expected = 0
|
|
if numConfsLeft != expected {
|
|
t.Fatalf("Received incorrect confirmation update: tx2 "+
|
|
"expected %d confirmations left, got %d",
|
|
expected, numConfsLeft)
|
|
}
|
|
default:
|
|
t.Fatal("Expected confirmation update for tx2")
|
|
}
|
|
|
|
// A confirmation notification for tx2 should be dispatched, as it met
|
|
// its required number of confirmations.
|
|
select {
|
|
case txConf := <-ntfn2.Event.Confirmed:
|
|
expectedConf := chainntnfs.TxConfirmation{
|
|
BlockHash: block3.Hash(),
|
|
BlockHeight: 12,
|
|
TxIndex: 0,
|
|
}
|
|
assertEqualTxConf(t, txConf, &expectedConf)
|
|
default:
|
|
t.Fatalf("Expected confirmation for tx2")
|
|
}
|
|
|
|
// We should receive two updates for tx3 since it requires two
|
|
// confirmations and it has already met them.
|
|
for i := uint32(1); i <= 2; i++ {
|
|
select {
|
|
case numConfsLeft := <-ntfn3.Event.Updates:
|
|
expected := tx3NumConfs - i
|
|
if numConfsLeft != expected {
|
|
t.Fatalf("Received incorrect confirmation update: tx3 "+
|
|
"expected %d confirmations left, got %d",
|
|
expected, numConfsLeft)
|
|
}
|
|
default:
|
|
t.Fatal("Expected confirmation update for tx2")
|
|
}
|
|
}
|
|
|
|
// A confirmation notification for tx3 should be dispatched, as it met
|
|
// its required number of confirmations.
|
|
select {
|
|
case txConf := <-ntfn3.Event.Confirmed:
|
|
expectedConf := chainntnfs.TxConfirmation{
|
|
BlockHash: block3.Hash(),
|
|
BlockHeight: 12,
|
|
TxIndex: 1,
|
|
}
|
|
assertEqualTxConf(t, txConf, &expectedConf)
|
|
default:
|
|
t.Fatalf("Expected confirmation for tx3")
|
|
}
|
|
}
|
|
|
|
func TestTxConfTearDown(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
var (
|
|
tx1 = wire.MsgTx{Version: 1}
|
|
tx2 = wire.MsgTx{Version: 2}
|
|
)
|
|
|
|
txConfNotifier := chainntnfs.NewTxConfNotifier(10, 100)
|
|
|
|
// Create the test transactions and register them with the
|
|
// TxConfNotifier to receive notifications.
|
|
tx1Hash := tx1.TxHash()
|
|
ntfn1 := chainntnfs.ConfNtfn{
|
|
TxID: &tx1Hash,
|
|
NumConfirmations: 1,
|
|
Event: chainntnfs.NewConfirmationEvent(1),
|
|
}
|
|
if err := txConfNotifier.Register(&ntfn1); err != nil {
|
|
t.Fatalf("unable to register ntfn: %v", err)
|
|
}
|
|
|
|
tx2Hash := tx2.TxHash()
|
|
ntfn2 := chainntnfs.ConfNtfn{
|
|
TxID: &tx2Hash,
|
|
NumConfirmations: 2,
|
|
Event: chainntnfs.NewConfirmationEvent(2),
|
|
}
|
|
if err := txConfNotifier.Register(&ntfn2); err != nil {
|
|
t.Fatalf("unable to register ntfn: %v", err)
|
|
}
|
|
|
|
// Include the transactions in a block and add it to the TxConfNotifier.
|
|
// This should confirm tx1, but not tx2.
|
|
block := btcutil.NewBlock(&wire.MsgBlock{
|
|
Transactions: []*wire.MsgTx{&tx1, &tx2},
|
|
})
|
|
|
|
err := txConfNotifier.ConnectTip(block.Hash(), 11, block.Transactions())
|
|
if err != nil {
|
|
t.Fatalf("Failed to connect block: %v", err)
|
|
}
|
|
|
|
// We do not care about the correctness of the notifications since they
|
|
// are tested in other methods, but we'll still attempt to retrieve them
|
|
// for the sake of not being able to later once the notification
|
|
// channels are closed.
|
|
select {
|
|
case <-ntfn1.Event.Updates:
|
|
default:
|
|
t.Fatal("Expected confirmation update for tx1")
|
|
}
|
|
|
|
select {
|
|
case <-ntfn1.Event.Confirmed:
|
|
default:
|
|
t.Fatalf("Expected confirmation for tx1")
|
|
}
|
|
|
|
select {
|
|
case <-ntfn2.Event.Updates:
|
|
default:
|
|
t.Fatal("Expected confirmation update for tx2")
|
|
}
|
|
|
|
select {
|
|
case txConf := <-ntfn2.Event.Confirmed:
|
|
t.Fatalf("Received unexpected confirmation for tx2: %v", txConf)
|
|
default:
|
|
}
|
|
|
|
// The notification channels should be closed for notifications that
|
|
// have not been dispatched yet, so we should not expect to receive any
|
|
// more updates.
|
|
txConfNotifier.TearDown()
|
|
|
|
// tx1 should not receive any more updates because it has already been
|
|
// confirmed and the TxConfNotifier has been shut down.
|
|
select {
|
|
case <-ntfn1.Event.Updates:
|
|
t.Fatal("Received unexpected confirmation update for tx1")
|
|
case txConf := <-ntfn1.Event.Confirmed:
|
|
t.Fatalf("Received unexpected confirmation for tx1: %v", txConf)
|
|
default:
|
|
}
|
|
|
|
// tx2 should not receive any more updates after the notifications
|
|
// channels have been closed and the TxConfNotifier shut down.
|
|
select {
|
|
case _, more := <-ntfn2.Event.Updates:
|
|
if more {
|
|
t.Fatal("Expected closed Updates channel for tx2")
|
|
}
|
|
case _, more := <-ntfn2.Event.Confirmed:
|
|
if more {
|
|
t.Fatalf("Expected closed Confirmed channel for tx2")
|
|
}
|
|
default:
|
|
t.Fatalf("Expected closed notification channels for tx2")
|
|
}
|
|
}
|
|
|
|
func assertEqualTxConf(t *testing.T,
|
|
actualConf, expectedConf *chainntnfs.TxConfirmation) {
|
|
|
|
if actualConf.BlockHeight != expectedConf.BlockHeight {
|
|
t.Fatalf("Incorrect block height in confirmation details: "+
|
|
"expected %d, got %d",
|
|
expectedConf.BlockHeight, actualConf.BlockHeight)
|
|
}
|
|
if !actualConf.BlockHash.IsEqual(expectedConf.BlockHash) {
|
|
t.Fatalf("Incorrect block hash in confirmation details: "+
|
|
"expected %d, got %d", expectedConf.BlockHash, actualConf.BlockHash)
|
|
}
|
|
if actualConf.TxIndex != expectedConf.TxIndex {
|
|
t.Fatalf("Incorrect tx index in confirmation details: "+
|
|
"expected %d, got %d", expectedConf.TxIndex, actualConf.TxIndex)
|
|
}
|
|
}
|