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Merge pull request #743 from nspcc-dev/optimize-some-db-accesses

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Optimize some db accesses
This commit is contained in:
Roman Khimov 2020-03-11 17:33:36 +03:00 committed by GitHub
commit 5f1868af28
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 227 additions and 384 deletions
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181
pkg/core/blockchain.go
View file

@ -29,7 +29,7 @@ import (
// Tuning parameters.
const (
headerBatchCount = 2000
version = "0.0.6"
version = "0.0.7"
// This one comes from C# code and it's different from the constant used
// when creating an asset with Neo.Asset.Create interop call. It looks
@ -475,7 +475,7 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
return err
}
if err := cache.PutUnspentCoinState(tx.Hash(), NewUnspentCoinState(len(tx.Outputs))); err != nil {
if err := cache.PutUnspentCoinState(tx.Hash(), state.NewUnspentCoin(block.Index, tx)); err != nil {
return err
}
@ -487,22 +487,20 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
// Process TX inputs that are grouped by previous hash.
for _, inputs := range transaction.GroupInputsByPrevHash(tx.Inputs) {
prevHash := inputs[0].PrevHash
prevTX, prevTXHeight, err := bc.dao.GetTransaction(prevHash)
if err != nil {
return fmt.Errorf("could not find previous TX: %s", prevHash)
}
unspent, err := cache.GetUnspentCoinStateOrNew(prevHash)
unspent, err := cache.GetUnspentCoinState(prevHash)
if err != nil {
return err
}
spentCoin, err := cache.GetSpentCoinsOrNew(prevHash, prevTXHeight)
if err != nil {
return err
}
oldSpentCoinLen := len(spentCoin.items)
for _, input := range inputs {
unspent.states[input.PrevIndex] = state.CoinSpent
prevTXOutput := prevTX.Outputs[input.PrevIndex]
if len(unspent.States) <= int(input.PrevIndex) {
return fmt.Errorf("bad input: %s/%d", input.PrevHash.StringLE(), input.PrevIndex)
}
if unspent.States[input.PrevIndex].State&state.CoinSpent != 0 {
return fmt.Errorf("double spend: %s/%d", input.PrevHash.StringLE(), input.PrevIndex)
}
unspent.States[input.PrevIndex].State |= state.CoinSpent
unspent.States[input.PrevIndex].SpendHeight = block.Index
prevTXOutput := &unspent.States[input.PrevIndex].Output
account, err := cache.GetAccountStateOrNew(prevTXOutput.ScriptHash)
if err != nil {
return err
@ -510,14 +508,13 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
if prevTXOutput.AssetID.Equals(GoverningTokenID()) {
account.Unclaimed = append(account.Unclaimed, state.UnclaimedBalance{
Tx: prevTX.Hash(),
Tx: input.PrevHash,
Index: input.PrevIndex,
Start: prevTXHeight,
Start: unspent.Height,
End: block.Index,
Value: prevTXOutput.Amount,
})
spentCoin.items[input.PrevIndex] = block.Index
if err = processTXWithValidatorsSubtract(&prevTXOutput, account, cache); err != nil {
if err = processTXWithValidatorsSubtract(prevTXOutput, account, cache); err != nil {
return err
}
}
@ -548,11 +545,6 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
if err = cache.PutUnspentCoinState(prevHash, unspent); err != nil {
return err
}
if oldSpentCoinLen != len(spentCoin.items) {
if err = cache.PutSpentCoinState(prevHash, spentCoin); err != nil {
return err
}
}
}
// Process the underlying type of the TX.
@ -588,17 +580,18 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
// Remove claimed NEO from spent coins making it unavalaible for
// additional claims.
for _, input := range t.Claims {
scs, err := cache.GetSpentCoinState(input.PrevHash)
scs, err := cache.GetUnspentCoinState(input.PrevHash)
if err == nil {
_, ok := scs.items[input.PrevIndex]
if !ok {
err = errors.New("no spent coin state")
if len(scs.States) <= int(input.PrevIndex) {
err = errors.New("invalid claim index")
} else if scs.States[input.PrevIndex].State&state.CoinClaimed != 0 {
err = errors.New("double claim")
}
}
if err != nil {
// We can't really do anything about it
// as it's a transaction in a signed block.
bc.log.Warn("DOUBLE CLAIM",
bc.log.Warn("FALSE OR DOUBLE CLAIM",
zap.String("PrevHash", input.PrevHash.StringLE()),
zap.Uint16("PrevIndex", input.PrevIndex),
zap.String("tx", tx.Hash().StringLE()),
@ -611,14 +604,13 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
break
}
prevTx, _, err := cache.GetTransaction(input.PrevHash)
acc, err := cache.GetAccountState(scs.States[input.PrevIndex].ScriptHash)
if err != nil {
return err
} else if int(input.PrevIndex) > len(prevTx.Outputs) {
return errors.New("invalid input in claim")
}
acc, err := cache.GetAccountState(prevTx.Outputs[input.PrevIndex].ScriptHash)
if err != nil {
scs.States[input.PrevIndex].State |= state.CoinClaimed
if err = cache.PutUnspentCoinState(input.PrevHash, scs); err != nil {
return err
}
@ -643,17 +635,6 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
} else if err := cache.PutAccountState(acc); err != nil {
return err
}
delete(scs.items, input.PrevIndex)
if len(scs.items) > 0 {
if err = cache.PutSpentCoinState(input.PrevHash, scs); err != nil {
return err
}
} else {
if err = cache.DeleteSpentCoinState(input.PrevHash); err != nil {
return err
}
}
}
case *transaction.EnrollmentTX:
if err := processEnrollmentTX(cache, t); err != nil {
@ -1174,7 +1155,7 @@ func (bc *Blockchain) GetAccountState(scriptHash util.Uint160) *state.Account {
}
// GetUnspentCoinState returns unspent coin state for given tx hash.
func (bc *Blockchain) GetUnspentCoinState(hash util.Uint256) *UnspentCoinState {
func (bc *Blockchain) GetUnspentCoinState(hash util.Uint256) *state.UnspentCoin {
ucs, err := bc.dao.GetUnspentCoinState(hash)
if ucs == nil && err != storage.ErrKeyNotFound {
bc.log.Warn("failed to get unspent coin state", zap.Error(err))
@ -1245,15 +1226,15 @@ func (bc *Blockchain) references(ins []transaction.Input) ([]transaction.InOut,
for _, inputs := range transaction.GroupInputsByPrevHash(ins) {
prevHash := inputs[0].PrevHash
tx, _, err := bc.dao.GetTransaction(prevHash)
unspent, err := bc.dao.GetUnspentCoinState(prevHash)
if err != nil {
return nil, errors.New("bad input reference")
}
for _, in := range inputs {
if int(in.PrevIndex) > len(tx.Outputs)-1 {
if int(in.PrevIndex) > len(unspent.States)-1 {
return nil, errors.New("bad input reference")
}
references = append(references, transaction.InOut{In: *in, Out: tx.Outputs[in.PrevIndex]})
references = append(references, transaction.InOut{In: *in, Out: unspent.States[in.PrevIndex].Output})
}
}
return references, nil
@ -1364,7 +1345,12 @@ func (bc *Blockchain) verifyTx(t *transaction.Transaction, block *block.Block) e
if err := bc.verifyOutputs(t); err != nil {
return errors.Wrap(err, "wrong outputs")
}
if err := bc.verifyResults(t); err != nil {
refs, err := bc.References(t)
if err != nil {
return err
}
results := refsAndOutsToResults(refs, t.Outputs)
if err := bc.verifyResults(t, results); err != nil {
return err
}
@ -1383,7 +1369,7 @@ func (bc *Blockchain) verifyTx(t *transaction.Transaction, block *block.Block) e
if bc.dao.IsDoubleClaim(claim) {
return errors.New("double claim")
}
if err := bc.verifyClaims(t); err != nil {
if err := bc.verifyClaims(t, results); err != nil {
return err
}
case transaction.InvocationType:
@ -1396,10 +1382,9 @@ func (bc *Blockchain) verifyTx(t *transaction.Transaction, block *block.Block) e
return bc.verifyTxWitnesses(t, block)
}
func (bc *Blockchain) verifyClaims(tx *transaction.Transaction) (err error) {
func (bc *Blockchain) verifyClaims(tx *transaction.Transaction, results []*transaction.Result) (err error) {
t := tx.Data.(*transaction.ClaimTX)
var result *transaction.Result
results := bc.GetTransactionResults(tx)
for i := range results {
if results[i].AssetID == UtilityTokenID() {
result = results[i]
@ -1426,17 +1411,26 @@ func (bc *Blockchain) calculateBonus(claims []transaction.Input) (util.Fixed8, e
for _, group := range inputs {
h := group[0].PrevHash
claimable, err := bc.getUnclaimed(h)
if err != nil || len(claimable) == 0 {
return 0, errors.New("no unclaimed inputs")
unspent, err := bc.dao.GetUnspentCoinState(h)
if err != nil {
return 0, err
}
for _, c := range group {
s, ok := claimable[c.PrevIndex]
if !ok {
if len(unspent.States) <= int(c.PrevIndex) {
return 0, fmt.Errorf("can't find spent coins for %s (%d)", c.PrevHash.StringLE(), c.PrevIndex)
}
unclaimed = append(unclaimed, s)
if unspent.States[c.PrevIndex].State&state.CoinSpent == 0 {
return 0, fmt.Errorf("not spent yet: %s/%d", c.PrevHash.StringLE(), c.PrevIndex)
}
if unspent.States[c.PrevIndex].State&state.CoinClaimed != 0 {
return 0, fmt.Errorf("already claimed: %s/%d", c.PrevHash.StringLE(), c.PrevIndex)
}
unclaimed = append(unclaimed, &spentCoin{
Output: &unspent.States[c.PrevIndex].Output,
StartHeight: unspent.Height,
EndHeight: unspent.States[c.PrevIndex].SpendHeight,
})
}
}
@ -1456,29 +1450,6 @@ func (bc *Blockchain) calculateBonusInternal(scs []*spentCoin) (util.Fixed8, err
return claimed, nil
}
func (bc *Blockchain) getUnclaimed(h util.Uint256) (map[uint16]*spentCoin, error) {
tx, txHeight, err := bc.GetTransaction(h)
if err != nil {
return nil, err
}
scs, err := bc.dao.GetSpentCoinState(h)
if err != nil {
return nil, err
}
result := make(map[uint16]*spentCoin)
for i, height := range scs.items {
result[i] = &spentCoin{
Output: &tx.Outputs[i],
StartHeight: txHeight,
EndHeight: height,
}
}
return result, nil
}
// isTxStillRelevant is a callback for mempool transaction filtering after the
// new block addition. It returns false for transactions already present in the
// chain (added by the new block), transactions using some inputs that are
@ -1581,11 +1552,7 @@ func (bc *Blockchain) verifyOutputs(t *transaction.Transaction) error {
return nil
}
func (bc *Blockchain) verifyResults(t *transaction.Transaction) error {
results := bc.GetTransactionResults(t)
if results == nil {
return errors.New("tx has no results")
}
func (bc *Blockchain) verifyResults(t *transaction.Transaction, results []*transaction.Result) error {
var resultsDestroy []*transaction.Result
var resultsIssue []*transaction.Result
for _, re := range results {
@ -1641,36 +1608,30 @@ func (bc *Blockchain) verifyResults(t *transaction.Transaction) error {
// GetTransactionResults returns the transaction results aggregate by assetID.
// Golang of GetTransationResults method in C# (https://github.com/neo-project/neo/blob/master/neo/Network/P2P/Payloads/Transaction.cs#L207)
func (bc *Blockchain) GetTransactionResults(t *transaction.Transaction) []*transaction.Result {
var tempResults []*transaction.Result
var results []*transaction.Result
tempGroupResult := make(map[util.Uint256]util.Fixed8)
references, err := bc.References(t)
if err != nil {
return nil
}
return refsAndOutsToResults(references, t.Outputs)
}
// mapReferencesToResults returns cumulative results of transaction based in its
// references and outputs.
func refsAndOutsToResults(references []transaction.InOut, outputs []transaction.Output) []*transaction.Result {
var results []*transaction.Result
tempResult := make(map[util.Uint256]util.Fixed8)
for _, inout := range references {
tempResults = append(tempResults, &transaction.Result{
AssetID: inout.Out.AssetID,
Amount: inout.Out.Amount,
})
}
for _, output := range t.Outputs {
tempResults = append(tempResults, &transaction.Result{
AssetID: output.AssetID,
Amount: -output.Amount,
})
}
for _, r := range tempResults {
if amount, ok := tempGroupResult[r.AssetID]; ok {
tempGroupResult[r.AssetID] = amount.Add(r.Amount)
} else {
tempGroupResult[r.AssetID] = r.Amount
c := tempResult[inout.Out.AssetID]
tempResult[inout.Out.AssetID] = c.Add(inout.Out.Amount)
}
for _, output := range outputs {
c := tempResult[output.AssetID]
tempResult[output.AssetID] = c.Sub(output.Amount)
}
results = []*transaction.Result{} // this assignment is necessary. (Most of the time amount == 0 and results is the empty slice.)
for assetID, amount := range tempGroupResult {
for assetID, amount := range tempResult {
if amount != util.Fixed8(0) {
results = append(results, &transaction.Result{
AssetID: assetID,
@ -1720,20 +1681,20 @@ func (bc *Blockchain) GetValidators(txes ...*transaction.Transaction) ([]*keys.P
}
for hash, inputs := range group {
prevTx, _, err := cache.GetTransaction(hash)
unspent, err := cache.GetUnspentCoinState(hash)
if err != nil {
return nil, err
}
// process inputs
for _, input := range inputs {
prevOutput := prevTx.Outputs[input.PrevIndex]
prevOutput := &unspent.States[input.PrevIndex].Output
accountState, err := cache.GetAccountStateOrNew(prevOutput.ScriptHash)
if err != nil {
return nil, err
}
// process account state votes: if there are any -> validators will be updated.
if err = processTXWithValidatorsSubtract(&prevOutput, accountState, cache); err != nil {
if err = processTXWithValidatorsSubtract(prevOutput, accountState, cache); err != nil {
return nil, err
}
delete(accountState.Balances, prevOutput.AssetID)

2
pkg/core/blockchainer.go
View file

@ -42,7 +42,7 @@ type Blockchainer interface {
GetStorageItems(hash util.Uint160) (map[string]*state.StorageItem, error)
GetTestVM() (*vm.VM, storage.Store)
GetTransaction(util.Uint256) (*transaction.Transaction, uint32, error)
GetUnspentCoinState(util.Uint256) *UnspentCoinState
GetUnspentCoinState(util.Uint256) *state.UnspentCoin
References(t *transaction.Transaction) ([]transaction.InOut, error)
mempool.Feer // fee interface
PoolTx(*transaction.Transaction) error

24
pkg/core/cacheddao.go
View file

@ -13,13 +13,15 @@ type cachedDao struct {
dao
accounts map[util.Uint160]*state.Account
contracts map[util.Uint160]*state.Contract
unspents map[util.Uint256]*state.UnspentCoin
}
// newCachedDao returns new cachedDao wrapping around given backing store.
func newCachedDao(backend storage.Store) *cachedDao {
accs := make(map[util.Uint160]*state.Account)
ctrs := make(map[util.Uint160]*state.Contract)
return &cachedDao{*newDao(backend), accs, ctrs}
unspents := make(map[util.Uint256]*state.UnspentCoin)
return &cachedDao{*newDao(backend), accs, ctrs, unspents}
}
// GetAccountStateOrNew retrieves Account from cache or underlying Store
@ -69,6 +71,20 @@ func (cd *cachedDao) DeleteContractState(hash util.Uint160) error {
return cd.dao.DeleteContractState(hash)
}
// GetUnspentCoinState retrieves UnspentCoin from cache or underlying Store.
func (cd *cachedDao) GetUnspentCoinState(hash util.Uint256) (*state.UnspentCoin, error) {
if cd.unspents[hash] != nil {
return cd.unspents[hash], nil
}
return cd.dao.GetUnspentCoinState(hash)
}
// PutUnspentCoinState saves given UnspentCoin in the cache.
func (cd *cachedDao) PutUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin) error {
cd.unspents[hash] = ucs
return nil
}
// Persist flushes all the changes made into the (supposedly) persistent
// underlying store.
func (cd *cachedDao) Persist() (int, error) {
@ -78,5 +94,11 @@ func (cd *cachedDao) Persist() (int, error) {
return 0, err
}
}
for hash := range cd.unspents {
err := cd.dao.PutUnspentCoinState(hash, cd.unspents[hash])
if err != nil {
return 0, err
}
}
return cd.dao.Persist()
}

68
pkg/core/dao.go
View file

@ -175,25 +175,9 @@ func (dao *dao) AppendNEP5Transfer(acc util.Uint160, tr *state.NEP5Transfer) err
// -- start unspent coins.
// GetUnspentCoinStateOrNew gets UnspentCoinState from temporary or persistent Store
// and return it. If it's not present in both stores, returns a new
// UnspentCoinState.
func (dao *dao) GetUnspentCoinStateOrNew(hash util.Uint256) (*UnspentCoinState, error) {
unspent, err := dao.GetUnspentCoinState(hash)
if err != nil {
if err != storage.ErrKeyNotFound {
return nil, err
}
unspent = &UnspentCoinState{
states: []state.Coin{},
}
}
return unspent, nil
}
// GetUnspentCoinState retrieves UnspentCoinState from the given store.
func (dao *dao) GetUnspentCoinState(hash util.Uint256) (*UnspentCoinState, error) {
unspent := &UnspentCoinState{}
func (dao *dao) GetUnspentCoinState(hash util.Uint256) (*state.UnspentCoin, error) {
unspent := &state.UnspentCoin{}
key := storage.AppendPrefix(storage.STCoin, hash.BytesLE())
err := dao.GetAndDecode(unspent, key)
if err != nil {
@ -203,52 +187,13 @@ func (dao *dao) GetUnspentCoinState(hash util.Uint256) (*UnspentCoinState, error
}
// PutUnspentCoinState puts given UnspentCoinState into the given store.
func (dao *dao) PutUnspentCoinState(hash util.Uint256, ucs *UnspentCoinState) error {
func (dao *dao) PutUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin) error {
key := storage.AppendPrefix(storage.STCoin, hash.BytesLE())
return dao.Put(ucs, key)
}
// -- end unspent coins.
// -- start spent coins.
// GetSpentCoinsOrNew returns spent coins from store.
func (dao *dao) GetSpentCoinsOrNew(hash util.Uint256, height uint32) (*SpentCoinState, error) {
spent, err := dao.GetSpentCoinState(hash)
if err != nil {
if err != storage.ErrKeyNotFound {
return nil, err
}
spent = NewSpentCoinState(hash, height)
}
return spent, nil
}
// GetSpentCoinState gets SpentCoinState from the given store.
func (dao *dao) GetSpentCoinState(hash util.Uint256) (*SpentCoinState, error) {
spent := &SpentCoinState{}
key := storage.AppendPrefix(storage.STSpentCoin, hash.BytesLE())
err := dao.GetAndDecode(spent, key)
if err != nil {
return nil, err
}
return spent, nil
}
// PutSpentCoinState puts given SpentCoinState into the given store.
func (dao *dao) PutSpentCoinState(hash util.Uint256, scs *SpentCoinState) error {
key := storage.AppendPrefix(storage.STSpentCoin, hash.BytesLE())
return dao.Put(scs, key)
}
// DeleteSpentCoinState deletes given SpentCoinState from the given store.
func (dao *dao) DeleteSpentCoinState(hash util.Uint256) error {
key := storage.AppendPrefix(storage.STSpentCoin, hash.BytesLE())
return dao.store.Delete(key)
}
// -- end spent coins.
// -- start validator.
// GetValidatorStateOrNew gets validator from store or created new one in case of error.
@ -592,7 +537,7 @@ func (dao *dao) IsDoubleSpend(tx *transaction.Transaction) bool {
return false
}
for _, input := range inputs {
if int(input.PrevIndex) >= len(unspent.states) || unspent.states[input.PrevIndex] == state.CoinSpent {
if int(input.PrevIndex) >= len(unspent.States) || (unspent.States[input.PrevIndex].State&state.CoinSpent) != 0 {
return true
}
}
@ -607,13 +552,12 @@ func (dao *dao) IsDoubleClaim(claim *transaction.ClaimTX) bool {
}
for _, inputs := range transaction.GroupInputsByPrevHash(claim.Claims) {
prevHash := inputs[0].PrevHash
scs, err := dao.GetSpentCoinState(prevHash)
unspent, err := dao.GetUnspentCoinState(prevHash)
if err != nil {
return true
}
for _, input := range inputs {
_, ok := scs.items[input.PrevIndex]
if !ok {
if int(input.PrevIndex) >= len(unspent.States) || (unspent.States[input.PrevIndex].State&state.CoinClaimed) != 0 {
return true
}
}

50
pkg/core/dao_test.go
View file

@ -94,14 +94,6 @@ func TestDeleteContractState(t *testing.T) {
require.Nil(t, gotContractState)
}
func TestGetUnspentCoinStateOrNew_New(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
unspentCoinState, err := dao.GetUnspentCoinStateOrNew(hash)
require.NoError(t, err)
require.NotNil(t, unspentCoinState)
}
func TestGetUnspentCoinState_Err(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
@ -113,7 +105,7 @@ func TestGetUnspentCoinState_Err(t *testing.T) {
func TestPutGetUnspentCoinState(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
unspentCoinState := &UnspentCoinState{states: []state.Coin{}}
unspentCoinState := &state.UnspentCoin{Height: 42, States: []state.OutputState{}}
err := dao.PutUnspentCoinState(hash, unspentCoinState)
require.NoError(t, err)
gotUnspentCoinState, err := dao.GetUnspentCoinState(hash)
@ -121,46 +113,6 @@ func TestPutGetUnspentCoinState(t *testing.T) {
require.Equal(t, unspentCoinState, gotUnspentCoinState)
}
func TestGetSpentCoinStateOrNew_New(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
spentCoinState, err := dao.GetSpentCoinsOrNew(hash, 1)
require.NoError(t, err)
require.NotNil(t, spentCoinState)
}
func TestPutAndGetSpentCoinState(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
spentCoinState := &SpentCoinState{items: make(map[uint16]uint32)}
err := dao.PutSpentCoinState(hash, spentCoinState)
require.NoError(t, err)
gotSpentCoinState, err := dao.GetSpentCoinState(hash)
require.NoError(t, err)
require.Equal(t, spentCoinState, gotSpentCoinState)
}
func TestGetSpentCoinState_Err(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
spentCoinState, err := dao.GetSpentCoinState(hash)
require.Error(t, err)
require.Nil(t, spentCoinState)
}
func TestDeleteSpentCoinState(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
hash := random.Uint256()
spentCoinState := &SpentCoinState{items: make(map[uint16]uint32)}
err := dao.PutSpentCoinState(hash, spentCoinState)
require.NoError(t, err)
err = dao.DeleteSpentCoinState(hash)
require.NoError(t, err)
gotSpentCoinState, err := dao.GetSpentCoinState(hash)
require.Error(t, err)
require.Nil(t, gotSpentCoinState)
}
func TestGetValidatorStateOrNew_New(t *testing.T) {
dao := newDao(storage.NewMemoryStore())
publicKey := &keys.PublicKey{}

10
pkg/core/spent_coin.go Normal file
View file

@ -0,0 +1,10 @@
package core
import "github.com/nspcc-dev/neo-go/pkg/core/transaction"
// spentCoin represents the state of a single spent coin output.
type spentCoin struct {
Output *transaction.Output
StartHeight uint32
EndHeight uint32
}

61
pkg/core/spent_coin_state.go
View file

@ -1,61 +0,0 @@
package core
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/util"
)
// SpentCoinState represents the state of a spent coin.
type SpentCoinState struct {
txHash util.Uint256
txHeight uint32
// A mapping between the index of the prevIndex and block height.
items map[uint16]uint32
}
// spentCoin represents the state of a single spent coin output.
type spentCoin struct {
Output *transaction.Output
StartHeight uint32
EndHeight uint32
}
// NewSpentCoinState returns a new SpentCoinState object.
func NewSpentCoinState(hash util.Uint256, height uint32) *SpentCoinState {
return &SpentCoinState{
txHash: hash,
txHeight: height,
items: make(map[uint16]uint32),
}
}
// DecodeBinary implements Serializable interface.
func (s *SpentCoinState) DecodeBinary(br *io.BinReader) {
br.ReadBytes(s.txHash[:])
s.txHeight = br.ReadU32LE()
s.items = make(map[uint16]uint32)
lenItems := br.ReadVarUint()
for i := 0; i < int(lenItems); i++ {
var (
key uint16
value uint32
)
key = br.ReadU16LE()
value = br.ReadU32LE()
s.items[key] = value
}
}
// EncodeBinary implements Serializable interface.
func (s *SpentCoinState) EncodeBinary(bw *io.BinWriter) {
bw.WriteBytes(s.txHash[:])
bw.WriteU32LE(s.txHeight)
bw.WriteVarUint(uint64(len(s.items)))
for k, v := range s.items {
bw.WriteU16LE(k)
bw.WriteU32LE(v)
}
}

30
pkg/core/spent_coin_state_test.go
View file

@ -1,30 +0,0 @@
package core
import (
"testing"
"github.com/nspcc-dev/neo-go/pkg/internal/random"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/stretchr/testify/assert"
)
func TestEncodeDecodeSpentCoinState(t *testing.T) {
spent := &SpentCoinState{
txHash: random.Uint256(),
txHeight: 1001,
items: map[uint16]uint32{
1: 3,
2: 8,
4: 100,
},
}
buf := io.NewBufBinWriter()
spent.EncodeBinary(buf.BinWriter)
assert.Nil(t, buf.Err)
spentDecode := new(SpentCoinState)
r := io.NewBinReaderFromBuf(buf.Bytes())
spentDecode.DecodeBinary(r)
assert.Nil(t, r.Err)
assert.Equal(t, spent, spentDecode)
}

60
pkg/core/state/unspent_coin.go Normal file
View file

@ -0,0 +1,60 @@
package state
import (
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/io"
)
// UnspentCoin hold the state of a unspent coin.
type UnspentCoin struct {
Height uint32
States []OutputState
}
// OutputState combines transaction output (UTXO) and its state
// (spent/claimed...) along with the height of spend (if it's spent).
type OutputState struct {
transaction.Output
SpendHeight uint32
State Coin
}
// NewUnspentCoin returns a new unspent coin state with N confirmed states.
func NewUnspentCoin(height uint32, tx *transaction.Transaction) *UnspentCoin {
u := &UnspentCoin{
Height: height,
States: make([]OutputState, len(tx.Outputs)),
}
for i := range tx.Outputs {
u.States[i] = OutputState{Output: tx.Outputs[i]}
}
return u
}
// EncodeBinary encodes UnspentCoin to the given BinWriter.
func (s *UnspentCoin) EncodeBinary(bw *io.BinWriter) {
bw.WriteU32LE(s.Height)
bw.WriteArray(s.States)
bw.WriteVarUint(uint64(len(s.States)))
}
// DecodeBinary decodes UnspentCoin from the given BinReader.
func (s *UnspentCoin) DecodeBinary(br *io.BinReader) {
s.Height = br.ReadU32LE()
br.ReadArray(&s.States)
}
// EncodeBinary implements Serializable interface.
func (o *OutputState) EncodeBinary(w *io.BinWriter) {
o.Output.EncodeBinary(w)
w.WriteU32LE(o.SpendHeight)
w.WriteB(byte(o.State))
}
// DecodeBinary implements Serializable interface.
func (o *OutputState) DecodeBinary(r *io.BinReader) {
o.Output.DecodeBinary(r)
o.SpendHeight = r.ReadU32LE()
o.State = Coin(r.ReadB())
}

54
pkg/core/state/unspent_coin_test.go Normal file
View file

@ -0,0 +1,54 @@
package state
import (
"testing"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/internal/random"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
)
func TestDecodeEncodeUnspentCoin(t *testing.T) {
unspent := &UnspentCoin{
Height: 100500,
States: []OutputState{
{
Output: transaction.Output{
AssetID: random.Uint256(),
Amount: util.Fixed8(42),
ScriptHash: random.Uint160(),
},
SpendHeight: 201000,
State: CoinSpent,
},
{
Output: transaction.Output{
AssetID: random.Uint256(),
Amount: util.Fixed8(420),
ScriptHash: random.Uint160(),
},
SpendHeight: 0,
State: CoinConfirmed,
},
{
Output: transaction.Output{
AssetID: random.Uint256(),
Amount: util.Fixed8(4200),
ScriptHash: random.Uint160(),
},
SpendHeight: 111000,
State: CoinSpent & CoinClaimed,
},
},
}
buf := io.NewBufBinWriter()
unspent.EncodeBinary(buf.BinWriter)
assert.Nil(t, buf.Err)
unspentDecode := &UnspentCoin{}
r := io.NewBinReaderFromBuf(buf.Bytes())
unspentDecode.DecodeBinary(r)
assert.Nil(t, r.Err)
}

39
pkg/core/unspent_coin_state.go
View file

@ -1,39 +0,0 @@
package core
import (
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/io"
)
// UnspentCoinState hold the state of a unspent coin.
type UnspentCoinState struct {
states []state.Coin
}
// NewUnspentCoinState returns a new unspent coin state with N confirmed states.
func NewUnspentCoinState(n int) *UnspentCoinState {
u := &UnspentCoinState{
states: make([]state.Coin, n),
}
for i := 0; i < n; i++ {
u.states[i] = state.CoinConfirmed
}
return u
}
// EncodeBinary encodes UnspentCoinState to the given BinWriter.
func (s *UnspentCoinState) EncodeBinary(bw *io.BinWriter) {
bw.WriteVarUint(uint64(len(s.states)))
for _, state := range s.states {
bw.WriteB(byte(state))
}
}
// DecodeBinary decodes UnspentCoinState from the given BinReader.
func (s *UnspentCoinState) DecodeBinary(br *io.BinReader) {
lenStates := br.ReadVarUint()
s.states = make([]state.Coin, lenStates)
for i := 0; i < int(lenStates); i++ {
s.states[i] = state.Coin(br.ReadB())
}
}

29
pkg/core/unspent_coint_state_test.go
View file

@ -1,29 +0,0 @@
package core
import (
"testing"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/stretchr/testify/assert"
)
func TestDecodeEncodeUnspentCoinState(t *testing.T) {
unspent := &UnspentCoinState{
states: []state.Coin{
state.CoinConfirmed,
state.CoinSpent,
state.CoinSpent,
state.CoinSpent,
state.CoinConfirmed,
},
}
buf := io.NewBufBinWriter()
unspent.EncodeBinary(buf.BinWriter)
assert.Nil(t, buf.Err)
unspentDecode := &UnspentCoinState{}
r := io.NewBinReaderFromBuf(buf.Bytes())
unspentDecode.DecodeBinary(r)
assert.Nil(t, r.Err)
}

3
pkg/network/helper_test.go
View file

@ -8,7 +8,6 @@ import (
"time"
"github.com/nspcc-dev/neo-go/config"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/mempool"
"github.com/nspcc-dev/neo-go/pkg/core/state"
@ -129,7 +128,7 @@ func (chain testChain) GetTransaction(util.Uint256) (*transaction.Transaction, u
panic("TODO")
}
func (chain testChain) GetUnspentCoinState(util.Uint256) *core.UnspentCoinState {
func (chain testChain) GetUnspentCoinState(util.Uint256) *state.UnspentCoin {
panic("TODO")
}