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core: add upper bound on the queued transctions

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This commit is contained in:
Péter Szilágyi
2016-08-17 16:53:15 +03:00
parent affffb39b3
commit a183ea29f9
3 changed files with 203 additions and 33 deletions
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108
core/tx_pool_test.go
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@@ -19,7 +19,9 @@ package core
import (
"crypto/ecdsa"
"math/big"
"math/rand"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
@@ -38,10 +40,10 @@ func setupTxPool() (*TxPool, *ecdsa.PrivateKey) {
db, _ := ethdb.NewMemDatabase()
statedb, _ := state.New(common.Hash{}, db)
var m event.TypeMux
key, _ := crypto.GenerateKey()
newPool := NewTxPool(testChainConfig(), &m, func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) })
newPool := NewTxPool(testChainConfig(), new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) })
newPool.resetState()
return newPool, key
}
@@ -438,7 +440,7 @@ func TestTransactionPostponing(t *testing.T) {
// Tests that if the transaction count belonging to a single account goes above
// some threshold, the higher transactions are dropped to prevent DOS attacks.
func TestTransactionQueueLimiting(t *testing.T) {
func TestTransactionQueueAccountLimiting(t *testing.T) {
// Create a test account and fund it
pool, key := setupTxPool()
account, _ := transaction(0, big.NewInt(0), key).From()
@@ -447,25 +449,103 @@ func TestTransactionQueueLimiting(t *testing.T) {
state.AddBalance(account, big.NewInt(1000000))
// Keep queuing up transactions and make sure all above a limit are dropped
for i := uint64(1); i <= maxQueued+5; i++ {
for i := uint64(1); i <= maxQueuedPerAccount+5; i++ {
if err := pool.Add(transaction(i, big.NewInt(100000), key)); err != nil {
t.Fatalf("tx %d: failed to add transaction: %v", i, err)
}
if len(pool.pending) != 0 {
t.Errorf("tx %d: pending pool size mismatch: have %d, want %d", i, len(pool.pending), 0)
}
if i <= maxQueued {
if i <= maxQueuedPerAccount {
if pool.queue[account].Len() != int(i) {
t.Errorf("tx %d: queue size mismatch: have %d, want %d", i, pool.queue[account].Len(), i)
}
} else {
if pool.queue[account].Len() != maxQueued {
t.Errorf("tx %d: queue limit mismatch: have %d, want %d", i, pool.queue[account].Len(), maxQueued)
if pool.queue[account].Len() != int(maxQueuedPerAccount) {
t.Errorf("tx %d: queue limit mismatch: have %d, want %d", i, pool.queue[account].Len(), maxQueuedPerAccount)
}
}
}
if len(pool.all) != maxQueued {
t.Errorf("total transaction mismatch: have %d, want %d", len(pool.all), maxQueued)
if len(pool.all) != int(maxQueuedPerAccount) {
t.Errorf("total transaction mismatch: have %d, want %d", len(pool.all), maxQueuedPerAccount)
}
}
// Tests that if the transaction count belonging to multiple accounts go above
// some threshold, the higher transactions are dropped to prevent DOS attacks.
func TestTransactionQueueGlobalLimiting(t *testing.T) {
// Reduce the queue limits to shorten test time
defer func(old uint64) { maxQueuedInTotal = old }(maxQueuedInTotal)
maxQueuedInTotal = maxQueuedPerAccount * 3
// Create the pool to test the limit enforcement with
db, _ := ethdb.NewMemDatabase()
statedb, _ := state.New(common.Hash{}, db)
pool := NewTxPool(testChainConfig(), new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) })
pool.resetState()
// Create a number of test accounts and fund them
state, _ := pool.currentState()
keys := make([]*ecdsa.PrivateKey, 5)
for i := 0; i < len(keys); i++ {
keys[i], _ = crypto.GenerateKey()
state.AddBalance(crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000))
}
// Generate and queue a batch of transactions
nonces := make(map[common.Address]uint64)
txs := make(types.Transactions, 0, 3*maxQueuedInTotal)
for len(txs) < cap(txs) {
key := keys[rand.Intn(len(keys))]
addr := crypto.PubkeyToAddress(key.PublicKey)
txs = append(txs, transaction(nonces[addr]+1, big.NewInt(100000), key))
nonces[addr]++
}
// Import the batch and verify that limits have been enforced
pool.AddBatch(txs)
queued := 0
for addr, list := range pool.queue {
if list.Len() > int(maxQueuedPerAccount) {
t.Errorf("addr %x: queued accounts overflown allowance: %d > %d", addr, list.Len(), maxQueuedPerAccount)
}
queued += list.Len()
}
if queued > int(maxQueuedInTotal) {
t.Fatalf("total transactions overflow allowance: %d > %d", queued, maxQueuedInTotal)
}
}
// Tests that if an account remains idle for a prolonged amount of time, any
// non-executable transactions queued up are dropped to prevent wasting resources
// on shuffling them around.
func TestTransactionQueueTimeLimiting(t *testing.T) {
// Reduce the queue limits to shorten test time
defer func(old time.Duration) { maxQueuedLifetime = old }(maxQueuedLifetime)
defer func(old time.Duration) { evictionInterval = old }(evictionInterval)
maxQueuedLifetime = time.Second
evictionInterval = time.Second
// Create a test account and fund it
pool, key := setupTxPool()
account, _ := transaction(0, big.NewInt(0), key).From()
state, _ := pool.currentState()
state.AddBalance(account, big.NewInt(1000000))
// Queue up a batch of transactions
for i := uint64(1); i <= maxQueuedPerAccount; i++ {
if err := pool.Add(transaction(i, big.NewInt(100000), key)); err != nil {
t.Fatalf("tx %d: failed to add transaction: %v", i, err)
}
}
// Wait until at least two expiration cycles hit and make sure the transactions are gone
time.Sleep(2 * evictionInterval)
if len(pool.queue) > 0 {
t.Fatalf("old transactions remained after eviction")
}
}
@@ -481,7 +561,7 @@ func TestTransactionPendingLimiting(t *testing.T) {
state.AddBalance(account, big.NewInt(1000000))
// Keep queuing up transactions and make sure all above a limit are dropped
for i := uint64(0); i < maxQueued+5; i++ {
for i := uint64(0); i < maxQueuedPerAccount+5; i++ {
if err := pool.Add(transaction(i, big.NewInt(100000), key)); err != nil {
t.Fatalf("tx %d: failed to add transaction: %v", i, err)
}
@@ -492,8 +572,8 @@ func TestTransactionPendingLimiting(t *testing.T) {
t.Errorf("tx %d: queue size mismatch: have %d, want %d", i, pool.queue[account].Len(), 0)
}
}
if len(pool.all) != maxQueued+5 {
t.Errorf("total transaction mismatch: have %d, want %d", len(pool.all), maxQueued+5)
if len(pool.all) != int(maxQueuedPerAccount+5) {
t.Errorf("total transaction mismatch: have %d, want %d", len(pool.all), maxQueuedPerAccount+5)
}
}
@@ -509,7 +589,7 @@ func testTransactionLimitingEquivalency(t *testing.T, origin uint64) {
state1, _ := pool1.currentState()
state1.AddBalance(account1, big.NewInt(1000000))
for i := uint64(0); i < maxQueued+5; i++ {
for i := uint64(0); i < maxQueuedPerAccount+5; i++ {
if err := pool1.Add(transaction(origin+i, big.NewInt(100000), key1)); err != nil {
t.Fatalf("tx %d: failed to add transaction: %v", i, err)
}
@@ -521,7 +601,7 @@ func testTransactionLimitingEquivalency(t *testing.T, origin uint64) {
state2.AddBalance(account2, big.NewInt(1000000))
txns := []*types.Transaction{}
for i := uint64(0); i < maxQueued+5; i++ {
for i := uint64(0); i < maxQueuedPerAccount+5; i++ {
txns = append(txns, transaction(origin+i, big.NewInt(100000), key2))
}
pool2.AddBatch(txns)