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core: refactor (*DAO).StoreAsTransaction

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Squash (*DAO).StoreAsTransaction and
(*DAO).StoreConflictingTransactions. It's better to keep them this way,
because StoreAsTransaction is always followed by
StoreConflictingTransactions, so it's an atomic operation.

The logic wasn't changed.
This commit is contained in:
Anna Shaleva 2021-08-17 18:33:09 +03:00
parent 4b35a1cf92
commit 5f9d38f640
4 changed files with 95 additions and 39 deletions
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7
pkg/core/blockchain.go
View file

@ -732,13 +732,6 @@ func (bc *Blockchain) storeBlock(block *block.Block, txpool *mempool.Pool) error
}
writeBuf.Reset()
if bc.config.P2PSigExtensions {
err := kvcache.StoreConflictingTransactions(tx, block.Index, writeBuf)
if err != nil {
blockdone <- err
return
}
}
}
if bc.config.RemoveUntraceableBlocks {
var start, stop uint32

13
pkg/core/blockchain_test.go
View file

@ -792,9 +792,16 @@ func TestVerifyTx(t *testing.T) {
t.Run("dummy on-chain conflict", func(t *testing.T) {
tx := bc.newTestTx(h, testScript)
require.NoError(t, accs[0].SignTx(netmode.UnitTestNet, tx))
dummyTx := transaction.NewTrimmedTX(tx.Hash())
dummyTx.Version = transaction.DummyVersion
require.NoError(t, bc.dao.StoreAsTransaction(dummyTx, bc.blockHeight, nil))
conflicting := transaction.New([]byte{byte(opcode.RET)}, 1)
conflicting.Attributes = []transaction.Attribute{
{
Type: transaction.ConflictsT,
Value: &transaction.Conflicts{
Hash: tx.Hash(),
},
},
}
require.NoError(t, bc.dao.StoreAsTransaction(conflicting, bc.blockHeight, nil))
require.True(t, errors.Is(bc.VerifyTx(tx), ErrHasConflicts))
})
t.Run("attribute on-chain conflict", func(t *testing.T) {

44
pkg/core/dao/dao.go
View file

@ -68,7 +68,6 @@ type DAO interface {
StoreAsBlock(block *block.Block, buf *io.BufBinWriter) error
StoreAsCurrentBlock(block *block.Block, buf *io.BufBinWriter) error
StoreAsTransaction(tx *transaction.Transaction, index uint32, buf *io.BufBinWriter) error
StoreConflictingTransactions(tx *transaction.Transaction, index uint32, buf *io.BufBinWriter) error
putNEP17TransferInfo(acc util.Uint160, bs *state.NEP17TransferInfo, buf *io.BufBinWriter) error
}
@ -618,7 +617,8 @@ func (dao *Simple) StoreAsCurrentBlock(block *block.Block, buf *io.BufBinWriter)
return dao.Store.Put(storage.SYSCurrentBlock.Bytes(), buf.Bytes())
}
// StoreAsTransaction stores given TX as DataTransaction. It can reuse given
// StoreAsTransaction stores given TX as DataTransaction. It also stores transactions
// given tx has conflicts with as DataTransaction with dummy version. It can reuse given
// buffer for the purpose of value serialization.
func (dao *Simple) StoreAsTransaction(tx *transaction.Transaction, index uint32, buf *io.BufBinWriter) error {
key := storage.AppendPrefix(storage.DataTransaction, tx.Hash().BytesBE())
@ -626,32 +626,30 @@ func (dao *Simple) StoreAsTransaction(tx *transaction.Transaction, index uint32,
buf = io.NewBufBinWriter()
}
buf.WriteU32LE(index)
if tx.Version == transaction.DummyVersion {
buf.BinWriter.WriteB(tx.Version)
} else {
tx.EncodeBinary(buf.BinWriter)
}
tx.EncodeBinary(buf.BinWriter)
if buf.Err != nil {
return buf.Err
}
return dao.Store.Put(key, buf.Bytes())
}
// StoreConflictingTransactions stores transactions given tx has conflicts with
// as DataTransaction with dummy version. It can reuse given buffer for the
// purpose of value serialization.
func (dao *Simple) StoreConflictingTransactions(tx *transaction.Transaction, index uint32, buf *io.BufBinWriter) error {
if buf == nil {
buf = io.NewBufBinWriter()
err := dao.Store.Put(key, buf.Bytes())
if err != nil {
return err
}
for _, attr := range tx.GetAttributes(transaction.ConflictsT) {
hash := attr.Value.(*transaction.Conflicts).Hash
dummyTx := transaction.NewTrimmedTX(hash)
dummyTx.Version = transaction.DummyVersion
if err := dao.StoreAsTransaction(dummyTx, index, buf); err != nil {
return fmt.Errorf("failed to store conflicting transaction %s for transaction %s: %w", hash.StringLE(), tx.Hash().StringLE(), err)
if dao.p2pSigExtensions {
var value []byte
for _, attr := range tx.GetAttributes(transaction.ConflictsT) {
hash := attr.Value.(*transaction.Conflicts).Hash
copy(key[1:], hash.BytesBE())
if value == nil {
buf.Reset()
buf.WriteU32LE(index)
buf.BinWriter.WriteB(transaction.DummyVersion)
value = buf.Bytes()
}
err = dao.Store.Put(key, value)
if err != nil {
return fmt.Errorf("failed to store conflicting transaction %s for transaction %s: %w", hash.StringLE(), tx.Hash().StringLE(), err)
}
}
buf.Reset()
}
return nil
}

70
pkg/core/dao/dao_test.go
View file

@ -2,6 +2,7 @@ package dao
import (
"encoding/binary"
"errors"
"testing"
"github.com/nspcc-dev/neo-go/internal/random"
@ -11,6 +12,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/stretchr/testify/require"
@ -150,13 +152,69 @@ func TestGetCurrentHeaderHeight_Store(t *testing.T) {
}
func TestStoreAsTransaction(t *testing.T) {
dao := NewSimple(storage.NewMemoryStore(), false, false)
t.Run("P2PSigExtensions off", func(t *testing.T) {
dao := NewSimple(storage.NewMemoryStore(), false, false)
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 1)
hash := tx.Hash()
err := dao.StoreAsTransaction(tx, 0, nil)
require.NoError(t, err)
err = dao.HasTransaction(hash)
require.NotNil(t, err)
})
t.Run("P2PSigExtensions on", func(t *testing.T) {
dao := NewSimple(storage.NewMemoryStore(), false, true)
conflictsH := util.Uint256{1, 2, 3}
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 1)
tx.Attributes = []transaction.Attribute{
{
Type: transaction.ConflictsT,
Value: &transaction.Conflicts{Hash: conflictsH},
},
}
hash := tx.Hash()
err := dao.StoreAsTransaction(tx, 0, nil)
require.NoError(t, err)
err = dao.HasTransaction(hash)
require.True(t, errors.Is(err, ErrAlreadyExists))
err = dao.HasTransaction(conflictsH)
require.True(t, errors.Is(err, ErrHasConflicts))
})
}
func BenchmarkStoreAsTransaction(b *testing.B) {
dao := NewSimple(storage.NewMemoryStore(), false, true)
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 1)
hash := tx.Hash()
err := dao.StoreAsTransaction(tx, 0, nil)
require.NoError(t, err)
err = dao.HasTransaction(hash)
require.NotNil(t, err)
tx.Attributes = []transaction.Attribute{
{
Type: transaction.ConflictsT,
Value: &transaction.Conflicts{
Hash: util.Uint256{1, 2, 3},
},
},
{
Type: transaction.ConflictsT,
Value: &transaction.Conflicts{
Hash: util.Uint256{4, 5, 6},
},
},
{
Type: transaction.ConflictsT,
Value: &transaction.Conflicts{
Hash: util.Uint256{7, 8, 9},
},
},
}
_ = tx.Hash()
b.ResetTimer()
b.ReportAllocs()
for n := 0; n < b.N; n++ {
err := dao.StoreAsTransaction(tx, 1, nil)
if err != nil {
b.FailNow()
}
}
}
func TestMakeStorageItemKey(t *testing.T) {