go-ethereum/core/state/sync_test.go
rjl493456442 99f81d2724
all: refactor trie API (#26995)
In this PR, all TryXXX(e.g. TryGet) APIs of trie are renamed to XXX(e.g. Get) with an error returned.

The original XXX(e.g. Get) APIs are renamed to MustXXX(e.g. MustGet) and does not return any error -- they print a log output. A future PR will change the behaviour to panic on errorrs.
2023-04-20 06:57:24 -04:00

676 lines
22 KiB
Go

// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package state
import (
"bytes"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
)
// testAccount is the data associated with an account used by the state tests.
type testAccount struct {
address common.Address
balance *big.Int
nonce uint64
code []byte
}
// makeTestState create a sample test state to test node-wise reconstruction.
func makeTestState() (ethdb.Database, Database, common.Hash, []*testAccount) {
// Create an empty state
db := rawdb.NewMemoryDatabase()
sdb := NewDatabase(db)
state, _ := New(common.Hash{}, sdb, nil)
// Fill it with some arbitrary data
var accounts []*testAccount
for i := byte(0); i < 96; i++ {
obj := state.GetOrNewStateObject(common.BytesToAddress([]byte{i}))
acc := &testAccount{address: common.BytesToAddress([]byte{i})}
obj.AddBalance(big.NewInt(int64(11 * i)))
acc.balance = big.NewInt(int64(11 * i))
obj.SetNonce(uint64(42 * i))
acc.nonce = uint64(42 * i)
if i%3 == 0 {
obj.SetCode(crypto.Keccak256Hash([]byte{i, i, i, i, i}), []byte{i, i, i, i, i})
acc.code = []byte{i, i, i, i, i}
}
if i%5 == 0 {
for j := byte(0); j < 5; j++ {
hash := crypto.Keccak256Hash([]byte{i, i, i, i, i, j, j})
obj.SetState(sdb, hash, hash)
}
}
state.updateStateObject(obj)
accounts = append(accounts, acc)
}
root, _ := state.Commit(false)
// Return the generated state
return db, sdb, root, accounts
}
// checkStateAccounts cross references a reconstructed state with an expected
// account array.
func checkStateAccounts(t *testing.T, db ethdb.Database, root common.Hash, accounts []*testAccount) {
// Check root availability and state contents
state, err := New(root, NewDatabase(db), nil)
if err != nil {
t.Fatalf("failed to create state trie at %x: %v", root, err)
}
if err := checkStateConsistency(db, root); err != nil {
t.Fatalf("inconsistent state trie at %x: %v", root, err)
}
for i, acc := range accounts {
if balance := state.GetBalance(acc.address); balance.Cmp(acc.balance) != 0 {
t.Errorf("account %d: balance mismatch: have %v, want %v", i, balance, acc.balance)
}
if nonce := state.GetNonce(acc.address); nonce != acc.nonce {
t.Errorf("account %d: nonce mismatch: have %v, want %v", i, nonce, acc.nonce)
}
if code := state.GetCode(acc.address); !bytes.Equal(code, acc.code) {
t.Errorf("account %d: code mismatch: have %x, want %x", i, code, acc.code)
}
}
}
// checkTrieConsistency checks that all nodes in a (sub-)trie are indeed present.
func checkTrieConsistency(db ethdb.Database, root common.Hash) error {
if v, _ := db.Get(root[:]); v == nil {
return nil // Consider a non existent state consistent.
}
trie, err := trie.New(trie.StateTrieID(root), trie.NewDatabase(db))
if err != nil {
return err
}
it := trie.NodeIterator(nil)
for it.Next(true) {
}
return it.Error()
}
// checkStateConsistency checks that all data of a state root is present.
func checkStateConsistency(db ethdb.Database, root common.Hash) error {
// Create and iterate a state trie rooted in a sub-node
if _, err := db.Get(root.Bytes()); err != nil {
return nil // Consider a non existent state consistent.
}
state, err := New(root, NewDatabase(db), nil)
if err != nil {
return err
}
it := NewNodeIterator(state)
for it.Next() {
}
return it.Error
}
// Tests that an empty state is not scheduled for syncing.
func TestEmptyStateSync(t *testing.T) {
db := trie.NewDatabase(rawdb.NewMemoryDatabase())
sync := NewStateSync(types.EmptyRootHash, rawdb.NewMemoryDatabase(), nil, db.Scheme())
if paths, nodes, codes := sync.Missing(1); len(paths) != 0 || len(nodes) != 0 || len(codes) != 0 {
t.Errorf("content requested for empty state: %v, %v, %v", nodes, paths, codes)
}
}
// Tests that given a root hash, a state can sync iteratively on a single thread,
// requesting retrieval tasks and returning all of them in one go.
func TestIterativeStateSyncIndividual(t *testing.T) {
testIterativeStateSync(t, 1, false, false)
}
func TestIterativeStateSyncBatched(t *testing.T) {
testIterativeStateSync(t, 100, false, false)
}
func TestIterativeStateSyncIndividualFromDisk(t *testing.T) {
testIterativeStateSync(t, 1, true, false)
}
func TestIterativeStateSyncBatchedFromDisk(t *testing.T) {
testIterativeStateSync(t, 100, true, false)
}
func TestIterativeStateSyncIndividualByPath(t *testing.T) {
testIterativeStateSync(t, 1, false, true)
}
func TestIterativeStateSyncBatchedByPath(t *testing.T) {
testIterativeStateSync(t, 100, false, true)
}
// stateElement represents the element in the state trie(bytecode or trie node).
type stateElement struct {
path string
hash common.Hash
code common.Hash
syncPath trie.SyncPath
}
func testIterativeStateSync(t *testing.T, count int, commit bool, bypath bool) {
// Create a random state to copy
_, srcDb, srcRoot, srcAccounts := makeTestState()
if commit {
srcDb.TrieDB().Commit(srcRoot, false)
}
srcTrie, _ := trie.New(trie.StateTrieID(srcRoot), srcDb.TrieDB())
// Create a destination state and sync with the scheduler
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, nil, srcDb.TrieDB().Scheme())
var (
nodeElements []stateElement
codeElements []stateElement
)
paths, nodes, codes := sched.Missing(count)
for i := 0; i < len(paths); i++ {
nodeElements = append(nodeElements, stateElement{
path: paths[i],
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(paths[i])),
})
}
for i := 0; i < len(codes); i++ {
codeElements = append(codeElements, stateElement{
code: codes[i],
})
}
for len(nodeElements)+len(codeElements) > 0 {
var (
nodeResults = make([]trie.NodeSyncResult, len(nodeElements))
codeResults = make([]trie.CodeSyncResult, len(codeElements))
)
for i, element := range codeElements {
data, err := srcDb.ContractCode(common.Hash{}, element.code)
if err != nil {
t.Fatalf("failed to retrieve contract bytecode for hash %x", element.code)
}
codeResults[i] = trie.CodeSyncResult{Hash: element.code, Data: data}
}
for i, node := range nodeElements {
if bypath {
if len(node.syncPath) == 1 {
data, _, err := srcTrie.GetNode(node.syncPath[0])
if err != nil {
t.Fatalf("failed to retrieve node data for path %x: %v", node.syncPath[0], err)
}
nodeResults[i] = trie.NodeSyncResult{Path: node.path, Data: data}
} else {
var acc types.StateAccount
if err := rlp.DecodeBytes(srcTrie.MustGet(node.syncPath[0]), &acc); err != nil {
t.Fatalf("failed to decode account on path %x: %v", node.syncPath[0], err)
}
id := trie.StorageTrieID(srcRoot, common.BytesToHash(node.syncPath[0]), acc.Root)
stTrie, err := trie.New(id, srcDb.TrieDB())
if err != nil {
t.Fatalf("failed to retriev storage trie for path %x: %v", node.syncPath[1], err)
}
data, _, err := stTrie.GetNode(node.syncPath[1])
if err != nil {
t.Fatalf("failed to retrieve node data for path %x: %v", node.syncPath[1], err)
}
nodeResults[i] = trie.NodeSyncResult{Path: node.path, Data: data}
}
} else {
data, err := srcDb.TrieDB().Node(node.hash)
if err != nil {
t.Fatalf("failed to retrieve node data for key %v", []byte(node.path))
}
nodeResults[i] = trie.NodeSyncResult{Path: node.path, Data: data}
}
}
for _, result := range codeResults {
if err := sched.ProcessCode(result); err != nil {
t.Errorf("failed to process result %v", err)
}
}
for _, result := range nodeResults {
if err := sched.ProcessNode(result); err != nil {
t.Errorf("failed to process result %v", err)
}
}
batch := dstDb.NewBatch()
if err := sched.Commit(batch); err != nil {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
paths, nodes, codes = sched.Missing(count)
nodeElements = nodeElements[:0]
for i := 0; i < len(paths); i++ {
nodeElements = append(nodeElements, stateElement{
path: paths[i],
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(paths[i])),
})
}
codeElements = codeElements[:0]
for i := 0; i < len(codes); i++ {
codeElements = append(codeElements, stateElement{
code: codes[i],
})
}
}
// Cross check that the two states are in sync
checkStateAccounts(t, dstDb, srcRoot, srcAccounts)
}
// Tests that the trie scheduler can correctly reconstruct the state even if only
// partial results are returned, and the others sent only later.
func TestIterativeDelayedStateSync(t *testing.T) {
// Create a random state to copy
_, srcDb, srcRoot, srcAccounts := makeTestState()
// Create a destination state and sync with the scheduler
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, nil, srcDb.TrieDB().Scheme())
var (
nodeElements []stateElement
codeElements []stateElement
)
paths, nodes, codes := sched.Missing(0)
for i := 0; i < len(paths); i++ {
nodeElements = append(nodeElements, stateElement{
path: paths[i],
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(paths[i])),
})
}
for i := 0; i < len(codes); i++ {
codeElements = append(codeElements, stateElement{
code: codes[i],
})
}
for len(nodeElements)+len(codeElements) > 0 {
// Sync only half of the scheduled nodes
var nodeProcessed int
var codeProcessed int
if len(codeElements) > 0 {
codeResults := make([]trie.CodeSyncResult, len(codeElements)/2+1)
for i, element := range codeElements[:len(codeResults)] {
data, err := srcDb.ContractCode(common.Hash{}, element.code)
if err != nil {
t.Fatalf("failed to retrieve contract bytecode for %x", element.code)
}
codeResults[i] = trie.CodeSyncResult{Hash: element.code, Data: data}
}
for _, result := range codeResults {
if err := sched.ProcessCode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
codeProcessed = len(codeResults)
}
if len(nodeElements) > 0 {
nodeResults := make([]trie.NodeSyncResult, len(nodeElements)/2+1)
for i, element := range nodeElements[:len(nodeResults)] {
data, err := srcDb.TrieDB().Node(element.hash)
if err != nil {
t.Fatalf("failed to retrieve contract bytecode for %x", element.code)
}
nodeResults[i] = trie.NodeSyncResult{Path: element.path, Data: data}
}
for _, result := range nodeResults {
if err := sched.ProcessNode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
nodeProcessed = len(nodeResults)
}
batch := dstDb.NewBatch()
if err := sched.Commit(batch); err != nil {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
paths, nodes, codes = sched.Missing(0)
nodeElements = nodeElements[nodeProcessed:]
for i := 0; i < len(paths); i++ {
nodeElements = append(nodeElements, stateElement{
path: paths[i],
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(paths[i])),
})
}
codeElements = codeElements[codeProcessed:]
for i := 0; i < len(codes); i++ {
codeElements = append(codeElements, stateElement{
code: codes[i],
})
}
}
// Cross check that the two states are in sync
checkStateAccounts(t, dstDb, srcRoot, srcAccounts)
}
// Tests that given a root hash, a trie can sync iteratively on a single thread,
// requesting retrieval tasks and returning all of them in one go, however in a
// random order.
func TestIterativeRandomStateSyncIndividual(t *testing.T) { testIterativeRandomStateSync(t, 1) }
func TestIterativeRandomStateSyncBatched(t *testing.T) { testIterativeRandomStateSync(t, 100) }
func testIterativeRandomStateSync(t *testing.T, count int) {
// Create a random state to copy
_, srcDb, srcRoot, srcAccounts := makeTestState()
// Create a destination state and sync with the scheduler
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, nil, srcDb.TrieDB().Scheme())
nodeQueue := make(map[string]stateElement)
codeQueue := make(map[common.Hash]struct{})
paths, nodes, codes := sched.Missing(count)
for i, path := range paths {
nodeQueue[path] = stateElement{
path: path,
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(path)),
}
}
for _, hash := range codes {
codeQueue[hash] = struct{}{}
}
for len(nodeQueue)+len(codeQueue) > 0 {
// Fetch all the queued nodes in a random order
if len(codeQueue) > 0 {
results := make([]trie.CodeSyncResult, 0, len(codeQueue))
for hash := range codeQueue {
data, err := srcDb.ContractCode(common.Hash{}, hash)
if err != nil {
t.Fatalf("failed to retrieve node data for %x", hash)
}
results = append(results, trie.CodeSyncResult{Hash: hash, Data: data})
}
for _, result := range results {
if err := sched.ProcessCode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
}
if len(nodeQueue) > 0 {
results := make([]trie.NodeSyncResult, 0, len(nodeQueue))
for path, element := range nodeQueue {
data, err := srcDb.TrieDB().Node(element.hash)
if err != nil {
t.Fatalf("failed to retrieve node data for %x %v %v", element.hash, []byte(element.path), element.path)
}
results = append(results, trie.NodeSyncResult{Path: path, Data: data})
}
for _, result := range results {
if err := sched.ProcessNode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
}
// Feed the retrieved results back and queue new tasks
batch := dstDb.NewBatch()
if err := sched.Commit(batch); err != nil {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
nodeQueue = make(map[string]stateElement)
codeQueue = make(map[common.Hash]struct{})
paths, nodes, codes := sched.Missing(count)
for i, path := range paths {
nodeQueue[path] = stateElement{
path: path,
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(path)),
}
}
for _, hash := range codes {
codeQueue[hash] = struct{}{}
}
}
// Cross check that the two states are in sync
checkStateAccounts(t, dstDb, srcRoot, srcAccounts)
}
// Tests that the trie scheduler can correctly reconstruct the state even if only
// partial results are returned (Even those randomly), others sent only later.
func TestIterativeRandomDelayedStateSync(t *testing.T) {
// Create a random state to copy
_, srcDb, srcRoot, srcAccounts := makeTestState()
// Create a destination state and sync with the scheduler
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, nil, srcDb.TrieDB().Scheme())
nodeQueue := make(map[string]stateElement)
codeQueue := make(map[common.Hash]struct{})
paths, nodes, codes := sched.Missing(0)
for i, path := range paths {
nodeQueue[path] = stateElement{
path: path,
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(path)),
}
}
for _, hash := range codes {
codeQueue[hash] = struct{}{}
}
for len(nodeQueue)+len(codeQueue) > 0 {
// Sync only half of the scheduled nodes, even those in random order
if len(codeQueue) > 0 {
results := make([]trie.CodeSyncResult, 0, len(codeQueue)/2+1)
for hash := range codeQueue {
delete(codeQueue, hash)
data, err := srcDb.ContractCode(common.Hash{}, hash)
if err != nil {
t.Fatalf("failed to retrieve node data for %x", hash)
}
results = append(results, trie.CodeSyncResult{Hash: hash, Data: data})
if len(results) >= cap(results) {
break
}
}
for _, result := range results {
if err := sched.ProcessCode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
}
if len(nodeQueue) > 0 {
results := make([]trie.NodeSyncResult, 0, len(nodeQueue)/2+1)
for path, element := range nodeQueue {
delete(nodeQueue, path)
data, err := srcDb.TrieDB().Node(element.hash)
if err != nil {
t.Fatalf("failed to retrieve node data for %x", element.hash)
}
results = append(results, trie.NodeSyncResult{Path: path, Data: data})
if len(results) >= cap(results) {
break
}
}
// Feed the retrieved results back and queue new tasks
for _, result := range results {
if err := sched.ProcessNode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
}
batch := dstDb.NewBatch()
if err := sched.Commit(batch); err != nil {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
paths, nodes, codes := sched.Missing(0)
for i, path := range paths {
nodeQueue[path] = stateElement{
path: path,
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(path)),
}
}
for _, hash := range codes {
codeQueue[hash] = struct{}{}
}
}
// Cross check that the two states are in sync
checkStateAccounts(t, dstDb, srcRoot, srcAccounts)
}
// Tests that at any point in time during a sync, only complete sub-tries are in
// the database.
func TestIncompleteStateSync(t *testing.T) {
// Create a random state to copy
db, srcDb, srcRoot, srcAccounts := makeTestState()
// isCodeLookup to save some hashing
var isCode = make(map[common.Hash]struct{})
for _, acc := range srcAccounts {
if len(acc.code) > 0 {
isCode[crypto.Keccak256Hash(acc.code)] = struct{}{}
}
}
isCode[types.EmptyCodeHash] = struct{}{}
checkTrieConsistency(db, srcRoot)
// Create a destination state and sync with the scheduler
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, nil, srcDb.TrieDB().Scheme())
var (
addedCodes []common.Hash
addedPaths []string
addedHashes []common.Hash
)
nodeQueue := make(map[string]stateElement)
codeQueue := make(map[common.Hash]struct{})
paths, nodes, codes := sched.Missing(1)
for i, path := range paths {
nodeQueue[path] = stateElement{
path: path,
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(path)),
}
}
for _, hash := range codes {
codeQueue[hash] = struct{}{}
}
for len(nodeQueue)+len(codeQueue) > 0 {
// Fetch a batch of state nodes
if len(codeQueue) > 0 {
results := make([]trie.CodeSyncResult, 0, len(codeQueue))
for hash := range codeQueue {
data, err := srcDb.ContractCode(common.Hash{}, hash)
if err != nil {
t.Fatalf("failed to retrieve node data for %x", hash)
}
results = append(results, trie.CodeSyncResult{Hash: hash, Data: data})
addedCodes = append(addedCodes, hash)
}
// Process each of the state nodes
for _, result := range results {
if err := sched.ProcessCode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
}
var nodehashes []common.Hash
if len(nodeQueue) > 0 {
results := make([]trie.NodeSyncResult, 0, len(nodeQueue))
for path, element := range nodeQueue {
data, err := srcDb.TrieDB().Node(element.hash)
if err != nil {
t.Fatalf("failed to retrieve node data for %x", element.hash)
}
results = append(results, trie.NodeSyncResult{Path: path, Data: data})
if element.hash != srcRoot {
addedPaths = append(addedPaths, element.path)
addedHashes = append(addedHashes, element.hash)
}
nodehashes = append(nodehashes, element.hash)
}
// Process each of the state nodes
for _, result := range results {
if err := sched.ProcessNode(result); err != nil {
t.Fatalf("failed to process result %v", err)
}
}
}
batch := dstDb.NewBatch()
if err := sched.Commit(batch); err != nil {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
for _, root := range nodehashes {
// Can't use checkStateConsistency here because subtrie keys may have odd
// length and crash in LeafKey.
if err := checkTrieConsistency(dstDb, root); err != nil {
t.Fatalf("state inconsistent: %v", err)
}
}
// Fetch the next batch to retrieve
nodeQueue = make(map[string]stateElement)
codeQueue = make(map[common.Hash]struct{})
paths, nodes, codes := sched.Missing(1)
for i, path := range paths {
nodeQueue[path] = stateElement{
path: path,
hash: nodes[i],
syncPath: trie.NewSyncPath([]byte(path)),
}
}
for _, hash := range codes {
codeQueue[hash] = struct{}{}
}
}
// Sanity check that removing any node from the database is detected
for _, node := range addedCodes {
val := rawdb.ReadCode(dstDb, node)
rawdb.DeleteCode(dstDb, node)
if err := checkStateConsistency(dstDb, srcRoot); err == nil {
t.Errorf("trie inconsistency not caught, missing: %x", node)
}
rawdb.WriteCode(dstDb, node, val)
}
scheme := srcDb.TrieDB().Scheme()
for i, path := range addedPaths {
owner, inner := trie.ResolvePath([]byte(path))
hash := addedHashes[i]
val := rawdb.ReadTrieNode(dstDb, owner, inner, hash, scheme)
if val == nil {
t.Error("missing trie node")
}
rawdb.DeleteTrieNode(dstDb, owner, inner, hash, scheme)
if err := checkStateConsistency(dstDb, srcRoot); err == nil {
t.Errorf("trie inconsistency not caught, missing: %v", path)
}
rawdb.WriteTrieNode(dstDb, owner, inner, hash, val, scheme)
}
}