1e3635b5aa
This commit modifies the recently added logic to the ChainNotifier to: 1. Fix the off-by-one confirmation error that was missed due a flaky test 2. Ensure that partial historical confirmations are properly handled. The partial hostile confirmation case arises when a transaction already a non-zero number of confirmations when the notification is registered, but less than what would trigger the confirmation notification. To fix this, transaction which have a partial number of confirmation are now properly inserted into the confHeap, skipping first first phase for notifications.
676 lines
20 KiB
Go
676 lines
20 KiB
Go
package chainntnfs_test
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import (
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"bytes"
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"log"
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"sync"
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"testing"
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"time"
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"github.com/lightningnetwork/lnd/chainntnfs"
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_ "github.com/lightningnetwork/lnd/chainntnfs/btcdnotify"
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"github.com/roasbeef/btcd/btcec"
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"github.com/roasbeef/btcd/chaincfg"
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"github.com/roasbeef/btcd/rpctest"
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"github.com/roasbeef/btcd/txscript"
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"github.com/roasbeef/btcd/wire"
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"github.com/roasbeef/btcutil"
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)
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var (
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testPrivKey = []byte{
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0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
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0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
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0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
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0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
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}
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netParams = &chaincfg.SimNetParams
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privKey, pubKey = btcec.PrivKeyFromBytes(btcec.S256(), testPrivKey)
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addrPk, _ = btcutil.NewAddressPubKey(pubKey.SerializeCompressed(),
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netParams)
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testAddr = addrPk.AddressPubKeyHash()
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)
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func getTestTxId(miner *rpctest.Harness) (*wire.ShaHash, error) {
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script, err := txscript.PayToAddrScript(testAddr)
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if err != nil {
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return nil, err
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}
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outputs := []*wire.TxOut{&wire.TxOut{2e8, script}}
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return miner.CoinbaseSpend(outputs)
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}
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func testSingleConfirmationNotification(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing single conf notification")
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// We'd like to test the case of being notified once a txid reaches
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// a *single* confirmation.
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//
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// So first, let's send some coins to "ourself", obtainig a txid.
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// We're spending from a coinbase output here, so we use the dedicated
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// function.
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txid, err := getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test tx: %v", err)
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}
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// Now that we have a txid, register a confirmation notiication with
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// the chainntfn source.
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numConfs := uint32(1)
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confIntent, err := notifier.RegisterConfirmationsNtfn(txid, numConfs)
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if err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// Now generate a single block, the transaction should be included which
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// should trigger a notification event.
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if _, err := miner.Node.Generate(1); err != nil {
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t.Fatalf("unable to generate single block: %v", err)
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}
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confSent := make(chan int32)
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go func() {
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confSent <- <-confIntent.Confirmed
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}()
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select {
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case <-confSent:
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break
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case <-time.After(2 * time.Second):
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t.Fatalf("confirmation notification never received")
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}
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}
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func testMultiConfirmationNotification(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing mulit-conf notification")
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// We'd like to test the case of being notified once a txid reaches
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// N confirmations, where N > 1.
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//
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// Again, we'll begin by creating a fresh transaction, so we can obtain a fresh txid.
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txid, err := getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test addr: %v", err)
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}
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numConfs := uint32(6)
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confIntent, err := notifier.RegisterConfirmationsNtfn(txid, numConfs)
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if err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// Now generate a six blocks. The transaction should be included in the
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// first block, which will be built upon by the other 5 blocks.
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if _, err := miner.Node.Generate(6); err != nil {
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t.Fatalf("unable to generate single block: %v", err)
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}
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confSent := make(chan int32)
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go func() {
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confSent <- <-confIntent.Confirmed
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}()
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select {
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case <-confSent:
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break
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case <-time.After(2 * time.Second):
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t.Fatalf("confirmation notification never received")
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}
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}
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func testBatchConfirmationNotification(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing batch mulit-conf notification")
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// We'd like to test a case of serving notifiations to multiple
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// clients, each requesting to be notified once a txid receives
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// various numbers of confirmations.
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confSpread := [6]uint32{1, 2, 3, 6, 20, 22}
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confIntents := make([]*chainntnfs.ConfirmationEvent, len(confSpread))
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// Create a new txid spending miner coins for each confirmation entry
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// in confSpread, we collect each conf intent into a slice so we can
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// verify they're each notified at the proper number of confirmations
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// below.
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for i, numConfs := range confSpread {
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txid, err := getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test addr: %v", err)
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}
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confIntent, err := notifier.RegisterConfirmationsNtfn(txid, numConfs)
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if err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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confIntents[i] = confIntent
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}
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// Now, for each confirmation intent, generate the delta number of blocks
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// needed to trigger the confirmation notification. A goroutine is
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// spawned in order to verify the proper notification is triggered.
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for i, numConfs := range confSpread {
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var blocksToGen uint32
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// If this is the last instance, manually index to generate the
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// proper block delta in order to avoid a panic.
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if i == len(confSpread)-1 {
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blocksToGen = confSpread[len(confSpread)-1] - confSpread[len(confSpread)-2]
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} else {
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blocksToGen = confSpread[i+1] - confSpread[i]
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}
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// Generate the number of blocks necessary to trigger this
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// current confirmation notification.
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if _, err := miner.Node.Generate(blocksToGen); err != nil {
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t.Fatalf("unable to generate single block: %v", err)
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}
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confSent := make(chan int32)
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go func() {
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confSent <- <-confIntents[i].Confirmed
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}()
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select {
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case <-confSent:
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continue
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case <-time.After(2 * time.Second):
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t.Fatalf("confirmation notification never received: %v", numConfs)
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}
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}
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}
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func testSpendNotification(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing multi-client spend notification")
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// We'd like to test the spend notifiations for all ChainNotifier
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// concrete implemenations.
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//
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// To do so, we first create a new output to our test target address.
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txid, err := getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test addr: %v", err)
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}
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// Mine a single block which should include that txid above.
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if _, err := miner.Node.Generate(1); err != nil {
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t.Fatalf("unable to generate single block: %v", err)
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}
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// Now that we have the txid, fetch the transaction itself.
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wrappedTx, err := miner.Node.GetRawTransaction(txid)
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if err != nil {
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t.Fatalf("unable to get new tx: %v", err)
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}
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tx := wrappedTx.MsgTx()
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// Locate the output index sent to us. We need this so we can construct
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// a spending txn below.
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outIndex := -1
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var pkScript []byte
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for i, txOut := range tx.TxOut {
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if bytes.Contains(txOut.PkScript, testAddr.ScriptAddress()) {
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pkScript = txOut.PkScript
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outIndex = i
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break
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}
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}
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if outIndex == -1 {
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t.Fatalf("unable to locate new output")
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}
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// Now that we've found the output index, register for a spentness
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// notification for the newly created output with multiple clients in
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// order to ensure the implementation can support multi-client spend
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// notifiations.
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outpoint := wire.NewOutPoint(txid, uint32(outIndex))
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const numClients = 5
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spendClients := make([]*chainntnfs.SpendEvent, numClients)
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for i := 0; i < numClients; i++ {
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spentIntent, err := notifier.RegisterSpendNtfn(outpoint)
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if err != nil {
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t.Fatalf("unable to register for spend ntfn: %v", err)
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}
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spendClients[i] = spentIntent
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}
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// Next, create a new transaction spending that output.
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spendingTx := wire.NewMsgTx()
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spendingTx.AddTxIn(&wire.TxIn{
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PreviousOutPoint: *outpoint,
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})
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spendingTx.AddTxOut(&wire.TxOut{
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Value: 1e8,
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PkScript: pkScript,
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})
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sigScript, err := txscript.SignatureScript(spendingTx, 0, pkScript,
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txscript.SigHashAll, privKey, true)
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if err != nil {
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t.Fatalf("unable to sign tx: %v", err)
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}
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spendingTx.TxIn[0].SignatureScript = sigScript
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// Broadcast our spending transaction.
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spenderSha, err := miner.Node.SendRawTransaction(spendingTx, true)
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if err != nil {
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t.Fatalf("unable to brodacst tx: %v", err)
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}
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// Now we mine a single block, which should include our spend. The
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// notification should also be sent off.
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if _, err := miner.Node.Generate(1); err != nil {
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t.Fatalf("unable to generate single block: %v", err)
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}
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// For each event we registered for above, we create a goroutine which
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// will listen on the event channel, passing it proxying each
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// notification into a single which will be examined belwo.
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spentNtfn := make(chan *chainntnfs.SpendDetail, numClients)
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for i := 0; i < numClients; i++ {
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go func(c *chainntnfs.SpendEvent) {
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spentNtfn <- <-c.Spend
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}(spendClients[i])
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}
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for i := 0; i < numClients; i++ {
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select {
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case ntfn := <-spentNtfn:
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// We've received the spend nftn. So now verify all the
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// fields have been set properly.
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if ntfn.SpentOutPoint != outpoint {
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t.Fatalf("ntfn includes wrong output, reports "+
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"%v instead of %v",
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ntfn.SpentOutPoint, outpoint)
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}
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if !bytes.Equal(ntfn.SpenderTxHash.Bytes(), spenderSha.Bytes()) {
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t.Fatalf("ntfn includes wrong spender tx sha, "+
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"reports %v intead of %v",
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ntfn.SpenderTxHash.Bytes(), spenderSha.Bytes())
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}
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if ntfn.SpenderInputIndex != 0 {
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t.Fatalf("ntfn includes wrong spending input "+
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"index, reports %v, should be %v",
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ntfn.SpenderInputIndex, 0)
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}
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case <-time.After(2 * time.Second):
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t.Fatalf("spend ntfn never received")
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}
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}
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}
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func testBlockEpochNotification(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing block epoch notification")
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// We'd like to test the case of multiple registered clients receiving
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// block epoch notifications.
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const numBlocks = 10
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const numClients = 5
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var wg sync.WaitGroup
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// Create numClients clients which will listen for block notifications. We
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// expect each client to receive 10 notifications for each of the ten
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// blocks we generate below. So we'll use a WaitGroup to synchronize the
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// test.
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for i := 0; i < numClients; i++ {
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epochClient, err := notifier.RegisterBlockEpochNtfn()
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if err != nil {
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t.Fatalf("unable to register for epoch notification")
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}
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wg.Add(numBlocks)
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go func() {
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for i := 0; i < numBlocks; i++ {
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<-epochClient.Epochs
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wg.Done()
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}
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}()
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}
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epochsSent := make(chan struct{})
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go func() {
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wg.Wait()
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close(epochsSent)
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}()
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// Now generate 10 blocks, the clients above should each receive 10
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// notifications, thereby unblocking the goroutine above.
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if _, err := miner.Node.Generate(numBlocks); err != nil {
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t.Fatalf("unable to generate blocks: %v", err)
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}
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select {
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case <-epochsSent:
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case <-time.After(2 * time.Second):
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t.Fatalf("all notifications not sent")
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}
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}
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func testMultiClientConfirmationNotification(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing multi-client multi-conf notification")
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// We'd like to test the case of a multiple clients registered to
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// receive a confirmation notification for the same transaction.
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txid, err := getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test tx: %v", err)
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}
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var wg sync.WaitGroup
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const (
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numConfsClients = 5
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numConfs = 1
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)
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// Register for a conf notification for the above generated txid with
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// numConfsClients distinct clients.
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for i := 0; i < numConfsClients; i++ {
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confClient, err := notifier.RegisterConfirmationsNtfn(txid, numConfs)
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if err != nil {
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t.Fatalf("unable to register for confirmation: %v", err)
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}
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wg.Add(1)
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go func() {
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<-confClient.Confirmed
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wg.Done()
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}()
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}
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confsSent := make(chan struct{})
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go func() {
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wg.Wait()
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close(confsSent)
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}()
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// Finally, generate a single block which should trigger the unblocking
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// of all numConfsClients blocked on the channel read above.
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if _, err := miner.Node.Generate(1); err != nil {
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t.Fatalf("unable to generate block: %v", err)
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}
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select {
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case <-confsSent:
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case <-time.After(2 * time.Second):
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t.Fatalf("all confirmation notifications not sent")
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}
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}
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// Tests the case in which a confirmation notification is requested for a
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// transaction that has already been included in a block. In this case, the
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// confirmation notification should be dispatched immediately.
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func testTxConfirmedBeforeNtfnRegistration(miner *rpctest.Harness,
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notifier chainntnfs.ChainNotifier, t *testing.T) {
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t.Logf("testing transaction confirmed before notification registration")
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// First, let's send some coins to "ourself", obtaining a txid. We're
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// spending from a coinbase output here, so we use the dedicated
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// function.
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txid, err := getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test tx: %v", err)
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}
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// Now generate one block. The notifier must check older blocks when
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// the confirmation event is registered below to ensure that the TXID
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// hasn't already been included in the chain, otherwise the
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// notification will never be sent.
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if _, err := miner.Node.Generate(1); err != nil {
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t.Fatalf("unable to generate two blocks: %v", err)
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}
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// Now that we have a txid, register a confirmation notification with
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// the chainntfn source.
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numConfs := uint32(1)
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confIntent, err := notifier.RegisterConfirmationsNtfn(txid, numConfs)
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if err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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confSent := make(chan int32)
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go func() {
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confSent <- <-confIntent.Confirmed
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}()
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select {
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case <-confSent:
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break
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case <-time.After(2 * time.Second):
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t.Fatalf("confirmation notification never received")
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}
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// Next, we want to test fully dispatching the notification for a
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// transaction that has been *partially* confirmed. So we'll create
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// another test txid.
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txid, err = getTestTxId(miner)
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if err != nil {
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t.Fatalf("unable to create test tx: %v", err)
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}
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// We'll request 6 confirmations for the above generated txid, but we
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// will generate the confirmations in chunks.
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numConfs = 6
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// First, generate 2 confirmations.
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if _, err := miner.Node.Generate(2); err != nil {
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t.Fatalf("unable to generate blocks: %v", err)
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}
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// Next, register for the notification *after* the transition has
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// already been partially confirmed.
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confIntent, err = notifier.RegisterConfirmationsNtfn(txid, numConfs)
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if err != nil {
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t.Fatalf("unable to register ntfn: %v", err)
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}
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// With the notification registered, generate another 4 blocks, this
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// should dispatch the notification.
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if _, err := miner.Node.Generate(4); err != nil {
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t.Fatalf("unable to generate blocks: %v", err)
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}
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confSent = make(chan int32)
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go func() {
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confSent <- <-confIntent.Confirmed
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}()
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select {
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case <-confSent:
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break
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case <-time.After(2 * time.Second):
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t.Fatalf("confirmation notification never received")
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}
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}
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// Tests the case in which a spend notification is requested for a spend that
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// has already been included in a block. In this case, the spend notification
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// should be dispatched immediately.
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func testSpendBeforeNtfnRegistration(miner *rpctest.Harness,
|
|
notifier chainntnfs.ChainNotifier, t *testing.T) {
|
|
|
|
t.Logf("testing spend broadcast before notification registration")
|
|
|
|
// We'd like to test the spend notifications for all ChainNotifier
|
|
// concrete implementations.
|
|
//
|
|
// To do so, we first create a new output to our test target address.
|
|
txid, err := getTestTxId(miner)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test addr: %v", err)
|
|
}
|
|
|
|
// Mine a single block which should include that txid above.
|
|
if _, err := miner.Node.Generate(1); err != nil {
|
|
t.Fatalf("unable to generate single block: %v", err)
|
|
}
|
|
|
|
// Now that we have the txid, fetch the transaction itself.
|
|
wrappedTx, err := miner.Node.GetRawTransaction(txid)
|
|
if err != nil {
|
|
t.Fatalf("unable to get new tx: %v", err)
|
|
}
|
|
tx := wrappedTx.MsgTx()
|
|
|
|
// Locate the output index sent to us. We need this so we can construct
|
|
// a spending txn below.
|
|
outIndex := -1
|
|
var pkScript []byte
|
|
for i, txOut := range tx.TxOut {
|
|
if bytes.Contains(txOut.PkScript, testAddr.ScriptAddress()) {
|
|
pkScript = txOut.PkScript
|
|
outIndex = i
|
|
break
|
|
}
|
|
}
|
|
if outIndex == -1 {
|
|
t.Fatalf("unable to locate new output")
|
|
}
|
|
|
|
// Now that we've found the output index, register for a spentness
|
|
// notification for the newly created output.
|
|
outpoint := wire.NewOutPoint(txid, uint32(outIndex))
|
|
|
|
// Next, create a new transaction spending that output.
|
|
spendingTx := wire.NewMsgTx()
|
|
spendingTx.AddTxIn(&wire.TxIn{
|
|
PreviousOutPoint: *outpoint,
|
|
})
|
|
spendingTx.AddTxOut(&wire.TxOut{
|
|
Value: 1e8,
|
|
PkScript: pkScript,
|
|
})
|
|
sigScript, err := txscript.SignatureScript(spendingTx, 0, pkScript,
|
|
txscript.SigHashAll, privKey, true)
|
|
if err != nil {
|
|
t.Fatalf("unable to sign tx: %v", err)
|
|
}
|
|
spendingTx.TxIn[0].SignatureScript = sigScript
|
|
|
|
// Broadcast our spending transaction.
|
|
spenderSha, err := miner.Node.SendRawTransaction(spendingTx, true)
|
|
if err != nil {
|
|
t.Fatalf("unable to brodacst tx: %v", err)
|
|
}
|
|
|
|
// Now we mine an additional block, which should include our spend.
|
|
if _, err := miner.Node.Generate(1); err != nil {
|
|
t.Fatalf("unable to generate single block: %v", err)
|
|
}
|
|
|
|
// Now, we register to be notified of a spend that has already
|
|
// happened. The notifier should dispatch a spend notification
|
|
// immediately.
|
|
spentIntent, err := notifier.RegisterSpendNtfn(outpoint)
|
|
if err != nil {
|
|
t.Fatalf("unable to register for spend ntfn: %v", err)
|
|
}
|
|
|
|
spentNtfn := make(chan *chainntnfs.SpendDetail)
|
|
go func() {
|
|
spentNtfn <- <-spentIntent.Spend
|
|
}()
|
|
|
|
select {
|
|
case ntfn := <-spentNtfn:
|
|
// We've received the spend nftn. So now verify all the fields
|
|
// have been set properly.
|
|
if ntfn.SpentOutPoint != outpoint {
|
|
t.Fatalf("ntfn includes wrong output, reports %v instead of %v",
|
|
ntfn.SpentOutPoint, outpoint)
|
|
}
|
|
if !bytes.Equal(ntfn.SpenderTxHash.Bytes(), spenderSha.Bytes()) {
|
|
t.Fatalf("ntfn includes wrong spender tx sha, reports %v intead of %v",
|
|
ntfn.SpenderTxHash.Bytes(), spenderSha.Bytes())
|
|
}
|
|
if ntfn.SpenderInputIndex != 0 {
|
|
t.Fatalf("ntfn includes wrong spending input index, reports %v, should be %v",
|
|
ntfn.SpenderInputIndex, 0)
|
|
}
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatalf("spend ntfn never received")
|
|
}
|
|
}
|
|
|
|
var ntfnTests = []func(node *rpctest.Harness, notifier chainntnfs.ChainNotifier, t *testing.T){
|
|
testSingleConfirmationNotification,
|
|
testMultiConfirmationNotification,
|
|
testBatchConfirmationNotification,
|
|
testMultiClientConfirmationNotification,
|
|
testSpendNotification,
|
|
testBlockEpochNotification,
|
|
testTxConfirmedBeforeNtfnRegistration,
|
|
testSpendBeforeNtfnRegistration,
|
|
}
|
|
|
|
// TestInterfaces tests all registered interfaces with a unified set of tests
|
|
// which excersie each of the required methods found within the ChainNotifier
|
|
// interface.
|
|
//
|
|
// NOTE: In the future, when additional implementations of the ChainNotifier
|
|
// interface have been implemented, in order to ensure the new concrete
|
|
// implementation is automatically tested, two steps must be undertaken. First,
|
|
// one needs add a "non-captured" (_) import from the new sub-package. This
|
|
// import should trigger an init() method within the package which registeres
|
|
// the interface. Second, an additional case in the switch within the main loop
|
|
// below needs to be added which properly initializes the interface.
|
|
func TestInterfaces(t *testing.T) {
|
|
// Initialize the harness around a btcd node which will serve as our
|
|
// dedicated miner to generate blocks, cause re-orgs, etc. We'll set up
|
|
// this node with a chain length of 125, so we have plentyyy of BTC to
|
|
// play around with.
|
|
miner, err := rpctest.New(netParams, nil, nil)
|
|
if err != nil {
|
|
t.Fatalf("unable to create mining node: %v", err)
|
|
}
|
|
defer miner.TearDown()
|
|
if err := miner.SetUp(true, 25); err != nil {
|
|
t.Fatalf("unable to set up mining node: %v", err)
|
|
}
|
|
|
|
rpcConfig := miner.RPCConfig()
|
|
|
|
log.Printf("Running %v ChainNotifier interface tests\n", len(ntfnTests))
|
|
var notifier chainntnfs.ChainNotifier
|
|
for _, notifierDriver := range chainntnfs.RegisteredNotifiers() {
|
|
notifierType := notifierDriver.NotifierType
|
|
|
|
switch notifierType {
|
|
case "btcd":
|
|
notifier, err = notifierDriver.New(&rpcConfig)
|
|
if err != nil {
|
|
t.Fatalf("unable to create %v notifier: %v",
|
|
notifierType, err)
|
|
}
|
|
}
|
|
|
|
if err := notifier.Start(); err != nil {
|
|
t.Fatalf("unable to start notifier %v: %v",
|
|
notifierType, err)
|
|
}
|
|
|
|
for _, ntfnTest := range ntfnTests {
|
|
ntfnTest(miner, notifier, t)
|
|
}
|
|
|
|
notifier.Stop()
|
|
}
|
|
}
|