plugeth/trie/triedb/pathdb/history_test.go

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// Copyright 2022 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 pathdb
import (
"bytes"
"fmt"
"reflect"
"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/ethdb"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie/testutil"
"github.com/ethereum/go-ethereum/trie/triestate"
)
// randomStateSet generates a random state change set.
func randomStateSet(n int) *triestate.Set {
var (
accounts = make(map[common.Address][]byte)
storages = make(map[common.Address]map[common.Hash][]byte)
)
for i := 0; i < n; i++ {
addr := testutil.RandomAddress()
storages[addr] = make(map[common.Hash][]byte)
for j := 0; j < 3; j++ {
v, _ := rlp.EncodeToBytes(common.TrimLeftZeroes(testutil.RandBytes(32)))
storages[addr][testutil.RandomHash()] = v
}
account := generateAccount(types.EmptyRootHash)
accounts[addr] = types.SlimAccountRLP(account)
}
return triestate.New(accounts, storages, nil)
}
func makeHistory() *history {
return newHistory(testutil.RandomHash(), types.EmptyRootHash, 0, randomStateSet(3))
}
func makeHistories(n int) []*history {
var (
parent = types.EmptyRootHash
result []*history
)
for i := 0; i < n; i++ {
root := testutil.RandomHash()
h := newHistory(root, parent, uint64(i), randomStateSet(3))
parent = root
result = append(result, h)
}
return result
}
func TestEncodeDecodeHistory(t *testing.T) {
var (
m meta
dec history
obj = makeHistory()
)
// check if meta data can be correctly encode/decode
blob := obj.meta.encode()
if err := m.decode(blob); err != nil {
t.Fatalf("Failed to decode %v", err)
}
if !reflect.DeepEqual(&m, obj.meta) {
t.Fatal("meta is mismatched")
}
// check if account/storage data can be correctly encode/decode
accountData, storageData, accountIndexes, storageIndexes := obj.encode()
if err := dec.decode(accountData, storageData, accountIndexes, storageIndexes); err != nil {
t.Fatalf("Failed to decode, err: %v", err)
}
if !compareSet(dec.accounts, obj.accounts) {
t.Fatal("account data is mismatched")
}
if !compareStorages(dec.storages, obj.storages) {
t.Fatal("storage data is mismatched")
}
if !compareList(dec.accountList, obj.accountList) {
t.Fatal("account list is mismatched")
}
if !compareStorageList(dec.storageList, obj.storageList) {
t.Fatal("storage list is mismatched")
}
}
func checkHistory(t *testing.T, db ethdb.KeyValueReader, freezer *rawdb.ResettableFreezer, id uint64, root common.Hash, exist bool) {
blob := rawdb.ReadStateHistoryMeta(freezer, id)
if exist && len(blob) == 0 {
t.Fatalf("Failed to load trie history, %d", id)
}
if !exist && len(blob) != 0 {
t.Fatalf("Unexpected trie history, %d", id)
}
if exist && rawdb.ReadStateID(db, root) == nil {
t.Fatalf("Root->ID mapping is not found, %d", id)
}
if !exist && rawdb.ReadStateID(db, root) != nil {
t.Fatalf("Unexpected root->ID mapping, %d", id)
}
}
func checkHistoriesInRange(t *testing.T, db ethdb.KeyValueReader, freezer *rawdb.ResettableFreezer, from, to uint64, roots []common.Hash, exist bool) {
for i, j := from, 0; i <= to; i, j = i+1, j+1 {
checkHistory(t, db, freezer, i, roots[j], exist)
}
}
func TestTruncateHeadHistory(t *testing.T) {
var (
roots []common.Hash
hs = makeHistories(10)
db = rawdb.NewMemoryDatabase()
freezer, _ = openFreezer(t.TempDir(), false)
)
defer freezer.Close()
for i := 0; i < len(hs); i++ {
accountData, storageData, accountIndex, storageIndex := hs[i].encode()
rawdb.WriteStateHistory(freezer, uint64(i+1), hs[i].meta.encode(), accountIndex, storageIndex, accountData, storageData)
rawdb.WriteStateID(db, hs[i].meta.root, uint64(i+1))
roots = append(roots, hs[i].meta.root)
}
for size := len(hs); size > 0; size-- {
pruned, err := truncateFromHead(db, freezer, uint64(size-1))
if err != nil {
t.Fatalf("Failed to truncate from head %v", err)
}
if pruned != 1 {
t.Error("Unexpected pruned items", "want", 1, "got", pruned)
}
checkHistoriesInRange(t, db, freezer, uint64(size), uint64(10), roots[size-1:], false)
checkHistoriesInRange(t, db, freezer, uint64(1), uint64(size-1), roots[:size-1], true)
}
}
func TestTruncateTailHistory(t *testing.T) {
var (
roots []common.Hash
hs = makeHistories(10)
db = rawdb.NewMemoryDatabase()
freezer, _ = openFreezer(t.TempDir(), false)
)
defer freezer.Close()
for i := 0; i < len(hs); i++ {
accountData, storageData, accountIndex, storageIndex := hs[i].encode()
rawdb.WriteStateHistory(freezer, uint64(i+1), hs[i].meta.encode(), accountIndex, storageIndex, accountData, storageData)
rawdb.WriteStateID(db, hs[i].meta.root, uint64(i+1))
roots = append(roots, hs[i].meta.root)
}
for newTail := 1; newTail < len(hs); newTail++ {
pruned, _ := truncateFromTail(db, freezer, uint64(newTail))
if pruned != 1 {
t.Error("Unexpected pruned items", "want", 1, "got", pruned)
}
checkHistoriesInRange(t, db, freezer, uint64(1), uint64(newTail), roots[:newTail], false)
checkHistoriesInRange(t, db, freezer, uint64(newTail+1), uint64(10), roots[newTail:], true)
}
}
func TestTruncateTailHistories(t *testing.T) {
var cases = []struct {
limit uint64
expPruned int
maxPruned uint64
minUnpruned uint64
empty bool
}{
{
1, 9, 9, 10, false,
},
{
0, 10, 10, 0 /* no meaning */, true,
},
{
10, 0, 0, 1, false,
},
}
for i, c := range cases {
var (
roots []common.Hash
hs = makeHistories(10)
db = rawdb.NewMemoryDatabase()
freezer, _ = openFreezer(t.TempDir()+fmt.Sprintf("%d", i), false)
)
defer freezer.Close()
for i := 0; i < len(hs); i++ {
accountData, storageData, accountIndex, storageIndex := hs[i].encode()
rawdb.WriteStateHistory(freezer, uint64(i+1), hs[i].meta.encode(), accountIndex, storageIndex, accountData, storageData)
rawdb.WriteStateID(db, hs[i].meta.root, uint64(i+1))
roots = append(roots, hs[i].meta.root)
}
pruned, _ := truncateFromTail(db, freezer, uint64(10)-c.limit)
if pruned != c.expPruned {
t.Error("Unexpected pruned items", "want", c.expPruned, "got", pruned)
}
if c.empty {
checkHistoriesInRange(t, db, freezer, uint64(1), uint64(10), roots, false)
} else {
tail := 10 - int(c.limit)
checkHistoriesInRange(t, db, freezer, uint64(1), c.maxPruned, roots[:tail], false)
checkHistoriesInRange(t, db, freezer, c.minUnpruned, uint64(10), roots[tail:], true)
}
}
}
// openFreezer initializes the freezer instance for storing state histories.
func openFreezer(datadir string, readOnly bool) (*rawdb.ResettableFreezer, error) {
return rawdb.NewStateFreezer(datadir, readOnly)
}
func compareSet[k comparable](a, b map[k][]byte) bool {
if len(a) != len(b) {
return false
}
for key, valA := range a {
valB, ok := b[key]
if !ok {
return false
}
if !bytes.Equal(valA, valB) {
return false
}
}
return true
}
func compareList[k comparable](a, b []k) bool {
if len(a) != len(b) {
return false
}
for i := 0; i < len(a); i++ {
if a[i] != b[i] {
return false
}
}
return true
}
func compareStorages(a, b map[common.Address]map[common.Hash][]byte) bool {
if len(a) != len(b) {
return false
}
for h, subA := range a {
subB, ok := b[h]
if !ok {
return false
}
if !compareSet(subA, subB) {
return false
}
}
return true
}
func compareStorageList(a, b map[common.Address][]common.Hash) bool {
if len(a) != len(b) {
return false
}
for h, la := range a {
lb, ok := b[h]
if !ok {
return false
}
if !compareList(la, lb) {
return false
}
}
return true
}