cerc-io/plugeth
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Improved transaction pool

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The transaction pool will now some easily be able to pre determine the
validity of a transaction by checking the following:

* Account existst
* gas limit higher than the instrinsic gas
* enough funds to pay upfront costs
* nonce check
This commit is contained in:
obscuren 2015-04-08 20:47:32 +02:00
parent a7750c929b
commit 6184781b49
8 changed files with 111 additions and 149 deletions
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13
core/chain_makers.go
View File

@ -45,8 +45,8 @@ func NewChainMan(block *types.Block, eventMux *event.TypeMux, db common.Database
return newChainManager(block, eventMux, db)
}
func NewBlockProc(db common.Database, txpool *TxPool, cman *ChainManager, eventMux *event.TypeMux) *BlockProcessor {
return newBlockProcessor(db, txpool, cman, eventMux)
func NewBlockProc(db common.Database, cman *ChainManager, eventMux *event.TypeMux) *BlockProcessor {
return newBlockProcessor(db, cman, eventMux)
}
func NewCanonical(n int, db common.Database) (*BlockProcessor, error) {
@ -120,8 +120,10 @@ func newChainManager(block *types.Block, eventMux *event.TypeMux, db common.Data
}
// block processor with fake pow
func newBlockProcessor(db common.Database, txpool *TxPool, cman *ChainManager, eventMux *event.TypeMux) *BlockProcessor {
bman := NewBlockProcessor(db, db, FakePow{}, txpool, newChainManager(nil, eventMux, db), eventMux)
func newBlockProcessor(db common.Database, cman *ChainManager, eventMux *event.TypeMux) *BlockProcessor {
chainMan := newChainManager(nil, eventMux, db)
txpool := NewTxPool(eventMux, chainMan.State)
bman := NewBlockProcessor(db, db, FakePow{}, txpool, chainMan, eventMux)
return bman
}
@ -129,9 +131,8 @@ func newBlockProcessor(db common.Database, txpool *TxPool, cman *ChainManager, e
// on result of makeChain
func newCanonical(n int, db common.Database) (*BlockProcessor, error) {
eventMux := &event.TypeMux{}
txpool := NewTxPool(eventMux)
bman := newBlockProcessor(db, txpool, newChainManager(nil, eventMux, db), eventMux)
bman := newBlockProcessor(db, newChainManager(nil, eventMux, db), eventMux)
bman.bc.SetProcessor(bman)
parent := bman.bc.CurrentBlock()
if n == 0 {

4
core/chain_manager_test.go
View File

@ -255,7 +255,7 @@ func TestChainInsertions(t *testing.T) {
var eventMux event.TypeMux
chainMan := NewChainManager(db, db, &eventMux)
txPool := NewTxPool(&eventMux)
txPool := NewTxPool(&eventMux, chainMan.State)
blockMan := NewBlockProcessor(db, db, nil, txPool, chainMan, &eventMux)
chainMan.SetProcessor(blockMan)
@ -301,7 +301,7 @@ func TestChainMultipleInsertions(t *testing.T) {
}
var eventMux event.TypeMux
chainMan := NewChainManager(db, db, &eventMux)
txPool := NewTxPool(&eventMux)
txPool := NewTxPool(&eventMux, chainMan.State)
blockMan := NewBlockProcessor(db, db, nil, txPool, chainMan, &eventMux)
chainMan.SetProcessor(blockMan)
done := make(chan bool, max)

12
core/state/statedb.go
View File

@ -63,14 +63,6 @@ func (self *StateDB) Logs() Logs {
return logs
}
/*
func (self *StateDB) Logs(txHash, blockHash common.Hash, txIndex uint) Logs {
self.logs.SetInfo(txHash, blockHash, txIndex)
return self.logs
}
*/
func (self *StateDB) Refund(address common.Address, gas *big.Int) {
addr := address.Str()
if self.refund[addr] == nil {
@ -83,6 +75,10 @@ func (self *StateDB) Refund(address common.Address, gas *big.Int) {
* GETTERS
*/
func (self *StateDB) HasAccount(addr common.Address) bool {
return self.GetStateObject(addr) != nil
}
// Retrieve the balance from the given address or 0 if object not found
func (self *StateDB) GetBalance(addr common.Address) *big.Int {
stateObject := self.GetStateObject(addr)

31
core/state_transition.go
View File

@ -74,6 +74,19 @@ func MessageGasValue(msg Message) *big.Int {
return new(big.Int).Mul(msg.Gas(), msg.GasPrice())
}
func IntrinsicGas(msg Message) *big.Int {
igas := new(big.Int).Set(params.TxGas)
for _, byt := range msg.Data() {
if byt != 0 {
igas.Add(igas, params.TxDataNonZeroGas)
} else {
igas.Add(igas, params.TxDataZeroGas)
}
}
return igas
}
func ApplyMessage(env vm.Environment, msg Message, coinbase *state.StateObject) ([]byte, *big.Int, error) {
return NewStateTransition(env, msg, coinbase).transitionState()
}
@ -177,22 +190,8 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
sender = self.From()
)
// Transaction gas
if err = self.UseGas(params.TxGas); err != nil {
return nil, nil, InvalidTxError(err)
}
// Pay data gas
dgas := new(big.Int)
for _, byt := range self.data {
if byt != 0 {
dgas.Add(dgas, params.TxDataNonZeroGas)
} else {
dgas.Add(dgas, params.TxDataZeroGas)
}
}
if err = self.UseGas(dgas); err != nil {
// Pay intrinsic gas
if err = self.UseGas(IntrinsicGas(self.msg)); err != nil {
return nil, nil, InvalidTxError(err)
}

85
core/transaction_pool.go
View File

@ -3,19 +3,24 @@ package core
import (
"errors"
"fmt"
"math/big"
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"gopkg.in/fatih/set.v0"
)
var (
txplogger = logger.NewLogger("TXP")
ErrInvalidSender = errors.New("Invalid sender")
ErrImpossibleNonce = errors.New("Impossible nonce")
ErrNonExistentAccount = errors.New("Account does not exist")
ErrInsufficientFunds = errors.New("Insufficient funds")
ErrIntrinsicGas = errors.New("Intrinsic gas too low")
)
const txPoolQueueSize = 50
@ -41,52 +46,62 @@ type TxPool struct {
queueChan chan *types.Transaction
// Quiting channel
quit chan bool
// The state function which will allow us to do some pre checkes
currentState func() *state.StateDB
// The actual pool
//pool *list.List
txs map[common.Hash]*types.Transaction
invalidHashes *set.Set
SecondaryProcessor TxProcessor
subscribers []chan TxMsg
eventMux *event.TypeMux
}
func NewTxPool(eventMux *event.TypeMux) *TxPool {
func NewTxPool(eventMux *event.TypeMux, currentStateFn func() *state.StateDB) *TxPool {
return &TxPool{
txs: make(map[common.Hash]*types.Transaction),
queueChan: make(chan *types.Transaction, txPoolQueueSize),
quit: make(chan bool),
eventMux: eventMux,
invalidHashes: set.New(),
currentState: currentStateFn,
}
}
func (pool *TxPool) ValidateTransaction(tx *types.Transaction) error {
// Validate sender
if _, err := tx.From(); err != nil {
var (
from common.Address
err error
)
if from, err = tx.From(); err != nil {
return ErrInvalidSender
}
// Validate curve param
v, _, _ := tx.Curve()
if v > 28 || v < 27 {
return fmt.Errorf("tx.v != (28 || 27) => %v", v)
}
return nil
/* XXX this kind of validation needs to happen elsewhere in the gui when sending txs.
Other clients should do their own validation. Value transfer could throw error
but doesn't necessarily invalidate the tx. Gas can still be payed for and miner
can still be rewarded for their inclusion and processing.
sender := pool.stateQuery.GetAccount(senderAddr)
totAmount := new(big.Int).Set(tx.Value())
// Make sure there's enough in the sender's account. Having insufficient
// funds won't invalidate this transaction but simple ignores it.
if sender.Balance().Cmp(totAmount) < 0 {
return fmt.Errorf("Insufficient amount in sender's (%x) account", tx.From())
if !pool.currentState().HasAccount(from) {
return ErrNonExistentAccount
}
*/
if pool.currentState().GetBalance(from).Cmp(new(big.Int).Mul(tx.Price, tx.GasLimit)) < 0 {
return ErrInsufficientFunds
}
if tx.GasLimit.Cmp(IntrinsicGas(tx)) < 0 {
return ErrIntrinsicGas
}
if pool.currentState().GetNonce(from) > tx.Nonce() {
return ErrImpossibleNonce
}
return nil
}
func (self *TxPool) addTx(tx *types.Transaction) {
@ -96,10 +111,12 @@ func (self *TxPool) addTx(tx *types.Transaction) {
func (self *TxPool) add(tx *types.Transaction) error {
hash := tx.Hash()
/* XXX I'm unsure about this. This is extremely dangerous and may result
in total black listing of certain transactions
if self.invalidHashes.Has(hash) {
return fmt.Errorf("Invalid transaction (%x)", hash[:4])
}
*/
if self.txs[hash] != nil {
return fmt.Errorf("Known transaction (%x)", hash[:4])
}
@ -121,7 +138,10 @@ func (self *TxPool) add(tx *types.Transaction) error {
// verified in ValidateTransaction.
f, _ := tx.From()
from := common.Bytes2Hex(f[:4])
txplogger.Debugf("(t) %x => %s (%v) %x\n", from, toname, tx.Value, tx.Hash())
if glog.V(logger.Debug) {
glog.Infof("(t) %x => %s (%v) %x\n", from, toname, tx.Value, tx.Hash())
}
// Notify the subscribers
go self.eventMux.Post(TxPreEvent{tx})
@ -146,10 +166,10 @@ func (self *TxPool) AddTransactions(txs []*types.Transaction) {
for _, tx := range txs {
if err := self.add(tx); err != nil {
txplogger.Debugln(err)
glog.V(logger.Debug).Infoln(err)
} else {
h := tx.Hash()
txplogger.Debugf("tx %x\n", h[:4])
glog.V(logger.Debug).Infof("tx %x\n", h[:4])
}
}
}
@ -168,23 +188,6 @@ func (self *TxPool) GetTransactions() (txs types.Transactions) {
return
}
func (pool *TxPool) RemoveInvalid(query StateQuery) {
pool.mu.Lock()
var removedTxs types.Transactions
for _, tx := range pool.txs {
from, _ := tx.From()
sender := query.GetAccount(from[:])
err := pool.ValidateTransaction(tx)
if err != nil || sender.Nonce() >= tx.Nonce() {
removedTxs = append(removedTxs, tx)
}
}
pool.mu.Unlock()
pool.RemoveSet(removedTxs)
}
func (self *TxPool) RemoveSet(txs types.Transactions) {
self.mu.Lock()
defer self.mu.Unlock()
@ -214,5 +217,5 @@ func (pool *TxPool) Start() {
func (pool *TxPool) Stop() {
pool.Flush()
txplogger.Infoln("Stopped")
glog.V(logger.Info).Infoln("TX Pool stopped")
}

109
core/transaction_pool_test.go
View File

@ -13,87 +13,50 @@ import (
"github.com/ethereum/go-ethereum/event"
)
// State query interface
type stateQuery struct{ db common.Database }
func SQ() stateQuery {
db, _ := ethdb.NewMemDatabase()
return stateQuery{db: db}
}
func (self stateQuery) GetAccount(addr []byte) *state.StateObject {
return state.NewStateObject(common.BytesToAddress(addr), self.db)
}
func transaction() *types.Transaction {
return types.NewTransactionMessage(common.Address{}, common.Big0, common.Big0, common.Big0, nil)
return types.NewTransactionMessage(common.Address{}, big.NewInt(100), big.NewInt(100), big.NewInt(100), nil)
}
func setup() (*TxPool, *ecdsa.PrivateKey) {
func setupTxPool() (*TxPool, *ecdsa.PrivateKey) {
db, _ := ethdb.NewMemDatabase()
statedb := state.New(common.Hash{}, db)
var m event.TypeMux
key, _ := crypto.GenerateKey()
return NewTxPool(&m), key
return NewTxPool(&m, func() *state.StateDB { return statedb }), key
}
func TestTxAdding(t *testing.T) {
pool, key := setup()
tx1 := transaction()
tx1.SignECDSA(key)
err := pool.Add(tx1)
if err != nil {
t.Error(err)
func TestInvalidTransactions(t *testing.T) {
pool, key := setupTxPool()
tx := transaction()
tx.SignECDSA(key)
err := pool.Add(tx)
if err != ErrNonExistentAccount {
t.Error("expected", ErrNonExistentAccount)
}
err = pool.Add(tx1)
if err == nil {
t.Error("added tx twice")
}
}
func TestAddInvalidTx(t *testing.T) {
pool, _ := setup()
tx1 := transaction()
err := pool.Add(tx1)
if err == nil {
t.Error("expected error")
}
}
func TestRemoveSet(t *testing.T) {
pool, _ := setup()
tx1 := transaction()
pool.addTx(tx1)
pool.RemoveSet(types.Transactions{tx1})
if pool.Size() > 0 {
t.Error("expected pool size to be 0")
}
}
func TestRemoveInvalid(t *testing.T) {
pool, key := setup()
tx1 := transaction()
pool.addTx(tx1)
pool.RemoveInvalid(SQ())
if pool.Size() > 0 {
t.Error("expected pool size to be 0")
}
tx1.SetNonce(1)
tx1.SignECDSA(key)
pool.addTx(tx1)
pool.RemoveInvalid(SQ())
if pool.Size() != 1 {
t.Error("expected pool size to be 1, is", pool.Size())
}
}
func TestInvalidSender(t *testing.T) {
pool, _ := setup()
tx := new(types.Transaction)
tx.R = new(big.Int)
tx.S = new(big.Int)
err := pool.ValidateTransaction(tx)
if err != ErrInvalidSender {
t.Errorf("expected %v, got %v", ErrInvalidSender, err)
from, _ := tx.From()
pool.currentState().AddBalance(from, big.NewInt(1))
err = pool.Add(tx)
if err != ErrInsufficientFunds {
t.Error("expected", ErrInsufficientFunds)
}
pool.currentState().AddBalance(from, big.NewInt(100*100))
err = pool.Add(tx)
if err != ErrIntrinsicGas {
t.Error("expected", ErrIntrinsicGas)
}
pool.currentState().SetNonce(from, 1)
pool.currentState().AddBalance(from, big.NewInt(0xffffffffffffff))
tx.GasLimit = big.NewInt(100000)
tx.Price = big.NewInt(1)
tx.SignECDSA(key)
err = pool.Add(tx)
if err != ErrImpossibleNonce {
t.Error("expected", ErrImpossibleNonce)
}
}

2
eth/backend.go
View File

@ -195,7 +195,7 @@ func New(config *Config) (*Ethereum, error) {
eth.chainManager = core.NewChainManager(blockDb, stateDb, eth.EventMux())
eth.pow = ethash.New(eth.chainManager)
eth.txPool = core.NewTxPool(eth.EventMux())
eth.txPool = core.NewTxPool(eth.EventMux(), eth.chainManager.State)
eth.blockProcessor = core.NewBlockProcessor(stateDb, extraDb, eth.pow, eth.txPool, eth.chainManager, eth.EventMux())
eth.chainManager.SetProcessor(eth.blockProcessor)
eth.whisper = whisper.New()

2
miner/worker.go
View File

@ -288,7 +288,7 @@ gasLimit:
tcount++
}
}
self.eth.TxPool().InvalidateSet(remove)
//self.eth.TxPool().InvalidateSet(remove)
var (
uncles []*types.Header