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trie_test.go
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// Copyright 2014 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 trie
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"hash"
"math/big"
"math/rand"
"reflect"
"testing"
"testing/quick"
"github.com/davecgh/go-spew/spew"
"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/ethdb/memorydb"
"github.com/ethereum/go-ethereum/rlp"
"golang.org/x/crypto/sha3"
)
func init() {
spew.Config.Indent = " "
spew.Config.DisableMethods = false
}
func TestEmptyTrie(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
res := trie.Hash()
exp := emptyRoot
if res != exp {
t.Errorf("expected %x got %x", exp, res)
}
}
func TestNull(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
key := make([]byte, 32)
value := []byte("test")
trie.Update(key, value)
if !bytes.Equal(trie.Get(key), value) {
t.Fatal("wrong value")
}
}
func TestMissingRoot(t *testing.T) {
trie, err := New(common.Hash{}, common.HexToHash("0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"), NewDatabase(memorydb.New()))
if trie != nil {
t.Error("New returned non-nil trie for invalid root")
}
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("New returned wrong error: %v", err)
}
}
func TestMissingNodeDisk(t *testing.T) { testMissingNode(t, false) }
func TestMissingNodeMemonly(t *testing.T) { testMissingNode(t, true) }
func testMissingNode(t *testing.T, memonly bool) {
diskdb := memorydb.New()
triedb := NewDatabase(diskdb)
trie := NewEmpty(triedb)
updateString(trie, "120000", "qwerqwerqwerqwerqwerqwerqwerqwer")
updateString(trie, "123456", "asdfasdfasdfasdfasdfasdfasdfasdf")
root, nodes, _ := trie.Commit(false)
triedb.Update(NewWithNodeSet(nodes))
if !memonly {
triedb.Commit(root, true, nil)
}
trie, _ = New(common.Hash{}, root, triedb)
_, err := trie.TryGet([]byte("120000"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
_, err = trie.TryGet([]byte("120099"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
_, err = trie.TryGet([]byte("123456"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
err = trie.TryUpdate([]byte("120099"), []byte("zxcvzxcvzxcvzxcvzxcvzxcvzxcvzxcv"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
err = trie.TryDelete([]byte("123456"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
hash := common.HexToHash("0xe1d943cc8f061a0c0b98162830b970395ac9315654824bf21b73b891365262f9")
if memonly {
delete(triedb.dirties, hash)
} else {
diskdb.Delete(hash[:])
}
trie, _ = New(common.Hash{}, root, triedb)
_, err = trie.TryGet([]byte("120000"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
_, err = trie.TryGet([]byte("120099"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
_, err = trie.TryGet([]byte("123456"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
err = trie.TryUpdate([]byte("120099"), []byte("zxcv"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
trie, _ = New(common.Hash{}, root, triedb)
err = trie.TryDelete([]byte("123456"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
}
func TestInsert(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
updateString(trie, "doe", "reindeer")
updateString(trie, "dog", "puppy")
updateString(trie, "dogglesworth", "cat")
exp := common.HexToHash("8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3")
root := trie.Hash()
if root != exp {
t.Errorf("case 1: exp %x got %x", exp, root)
}
trie = NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
updateString(trie, "A", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
exp = common.HexToHash("d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab")
root, _, err := trie.Commit(false)
if err != nil {
t.Fatalf("commit error: %v", err)
}
if root != exp {
t.Errorf("case 2: exp %x got %x", exp, root)
}
}
func TestGet(t *testing.T) {
db := NewDatabase(rawdb.NewMemoryDatabase())
trie := NewEmpty(db)
updateString(trie, "doe", "reindeer")
updateString(trie, "dog", "puppy")
updateString(trie, "dogglesworth", "cat")
for i := 0; i < 2; i++ {
res := getString(trie, "dog")
if !bytes.Equal(res, []byte("puppy")) {
t.Errorf("expected puppy got %x", res)
}
unknown := getString(trie, "unknown")
if unknown != nil {
t.Errorf("expected nil got %x", unknown)
}
if i == 1 {
return
}
root, nodes, _ := trie.Commit(false)
db.Update(NewWithNodeSet(nodes))
trie, _ = New(common.Hash{}, root, db)
}
}
func TestDelete(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
}
for _, val := range vals {
if val.v != "" {
updateString(trie, val.k, val.v)
} else {
deleteString(trie, val.k)
}
}
hash := trie.Hash()
exp := common.HexToHash("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if hash != exp {
t.Errorf("expected %x got %x", exp, hash)
}
}
func TestEmptyValues(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
}
for _, val := range vals {
updateString(trie, val.k, val.v)
}
hash := trie.Hash()
exp := common.HexToHash("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if hash != exp {
t.Errorf("expected %x got %x", exp, hash)
}
}
func TestReplication(t *testing.T) {
triedb := NewDatabase(rawdb.NewMemoryDatabase())
trie := NewEmpty(triedb)
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"dog", "puppy"},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
updateString(trie, val.k, val.v)
}
exp, nodes, err := trie.Commit(false)
if err != nil {
t.Fatalf("commit error: %v", err)
}
triedb.Update(NewWithNodeSet(nodes))
// create a new trie on top of the database and check that lookups work.
trie2, err := New(common.Hash{}, exp, triedb)
if err != nil {
t.Fatalf("can't recreate trie at %x: %v", exp, err)
}
for _, kv := range vals {
if string(getString(trie2, kv.k)) != kv.v {
t.Errorf("trie2 doesn't have %q => %q", kv.k, kv.v)
}
}
hash, nodes, err := trie2.Commit(false)
if err != nil {
t.Fatalf("commit error: %v", err)
}
if hash != exp {
t.Errorf("root failure. expected %x got %x", exp, hash)
}
// recreate the trie after commit
if nodes != nil {
triedb.Update(NewWithNodeSet(nodes))
}
trie2, err = New(common.Hash{}, hash, triedb)
if err != nil {
t.Fatalf("can't recreate trie at %x: %v", exp, err)
}
// perform some insertions on the new trie.
vals2 := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
// {"shaman", "horse"},
// {"doge", "coin"},
// {"ether", ""},
// {"dog", "puppy"},
// {"somethingveryoddindeedthis is", "myothernodedata"},
// {"shaman", ""},
}
for _, val := range vals2 {
updateString(trie2, val.k, val.v)
}
if hash := trie2.Hash(); hash != exp {
t.Errorf("root failure. expected %x got %x", exp, hash)
}
}
func TestLargeValue(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
trie.Update([]byte("key1"), []byte{99, 99, 99, 99})
trie.Update([]byte("key2"), bytes.Repeat([]byte{1}, 32))
trie.Hash()
}
// TestRandomCases tests som cases that were found via random fuzzing
func TestRandomCases(t *testing.T) {
var rt = []randTestStep{
{op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 0
{op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 1
{op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000002")}, // step 2
{op: 2, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("")}, // step 3
{op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 4
{op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 5
{op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 6
{op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 7
{op: 0, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("0000000000000008")}, // step 8
{op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000009")}, // step 9
{op: 2, key: common.Hex2Bytes("fd"), value: common.Hex2Bytes("")}, // step 10
{op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 11
{op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 12
{op: 0, key: common.Hex2Bytes("fd"), value: common.Hex2Bytes("000000000000000d")}, // step 13
{op: 6, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 14
{op: 1, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("")}, // step 15
{op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 16
{op: 0, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("0000000000000011")}, // step 17
{op: 5, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 18
{op: 3, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 19
{op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000014")}, // step 20
{op: 0, key: common.Hex2Bytes("d51b182b95d677e5f1c82508c0228de96b73092d78ce78b2230cd948674f66fd1483bd"), value: common.Hex2Bytes("0000000000000015")}, // step 21
{op: 0, key: common.Hex2Bytes("c2a38512b83107d665c65235b0250002882ac2022eb00711552354832c5f1d030d0e408e"), value: common.Hex2Bytes("0000000000000016")}, // step 22
{op: 5, key: common.Hex2Bytes(""), value: common.Hex2Bytes("")}, // step 23
{op: 1, key: common.Hex2Bytes("980c393656413a15c8da01978ed9f89feb80b502f58f2d640e3a2f5f7a99a7018f1b573befd92053ac6f78fca4a87268"), value: common.Hex2Bytes("")}, // step 24
{op: 1, key: common.Hex2Bytes("fd"), value: common.Hex2Bytes("")}, // step 25
}
runRandTest(rt)
}
// randTest performs random trie operations.
// Instances of this test are created by Generate.
type randTest []randTestStep
type randTestStep struct {
op int
key []byte // for opUpdate, opDelete, opGet
value []byte // for opUpdate
err error // for debugging
}
const (
opUpdate = iota
opDelete
opGet
opHash
opCommit
opItercheckhash
opNodeDiff
opMax // boundary value, not an actual op
)
func (randTest) Generate(r *rand.Rand, size int) reflect.Value {
var allKeys [][]byte
genKey := func() []byte {
if len(allKeys) < 2 || r.Intn(100) < 10 {
// new key
key := make([]byte, r.Intn(50))
r.Read(key)
allKeys = append(allKeys, key)
return key
}
// use existing key
return allKeys[r.Intn(len(allKeys))]
}
var steps randTest
for i := 0; i < size; i++ {
step := randTestStep{op: r.Intn(opMax)}
switch step.op {
case opUpdate:
step.key = genKey()
step.value = make([]byte, 8)
binary.BigEndian.PutUint64(step.value, uint64(i))
case opGet, opDelete:
step.key = genKey()
}
steps = append(steps, step)
}
return reflect.ValueOf(steps)
}
func runRandTest(rt randTest) bool {
var (
triedb = NewDatabase(memorydb.New())
tr = NewEmpty(triedb)
values = make(map[string]string) // tracks content of the trie
origTrie = NewEmpty(triedb)
)
tr.tracer = newTracer()
for i, step := range rt {
// fmt.Printf("{op: %d, key: common.Hex2Bytes(\"%x\"), value: common.Hex2Bytes(\"%x\")}, // step %d\n",
// step.op, step.key, step.value, i)
switch step.op {
case opUpdate:
tr.Update(step.key, step.value)
values[string(step.key)] = string(step.value)
case opDelete:
tr.Delete(step.key)
delete(values, string(step.key))
case opGet:
v := tr.Get(step.key)
want := values[string(step.key)]
if string(v) != want {
rt[i].err = fmt.Errorf("mismatch for key %#x, got %#x want %#x", step.key, v, want)
}
case opHash:
tr.Hash()
case opCommit:
hash, nodes, err := tr.Commit(false)
if err != nil {
rt[i].err = err
return false
}
if nodes != nil {
triedb.Update(NewWithNodeSet(nodes))
}
newtr, err := New(common.Hash{}, hash, triedb)
if err != nil {
rt[i].err = err
return false
}
tr = newtr
tr.tracer = newTracer()
origTrie = tr.Copy()
case opItercheckhash:
checktr := NewEmpty(triedb)
it := NewIterator(tr.NodeIterator(nil))
for it.Next() {
checktr.Update(it.Key, it.Value)
}
if tr.Hash() != checktr.Hash() {
rt[i].err = fmt.Errorf("hash mismatch in opItercheckhash")
}
case opNodeDiff:
var (
inserted = tr.tracer.insertList()
deleted = tr.tracer.deleteList()
origIter = origTrie.NodeIterator(nil)
curIter = tr.NodeIterator(nil)
origSeen = make(map[string]struct{})
curSeen = make(map[string]struct{})
)
for origIter.Next(true) {
if origIter.Leaf() {
continue
}
origSeen[string(origIter.Path())] = struct{}{}
}
for curIter.Next(true) {
if curIter.Leaf() {
continue
}
curSeen[string(curIter.Path())] = struct{}{}
}
var (
insertExp = make(map[string]struct{})
deleteExp = make(map[string]struct{})
)
for path := range curSeen {
_, present := origSeen[path]
if !present {
insertExp[path] = struct{}{}
}
}
for path := range origSeen {
_, present := curSeen[path]
if !present {
deleteExp[path] = struct{}{}
}
}
if len(insertExp) != len(inserted) {
rt[i].err = fmt.Errorf("insert set mismatch")
}
if len(deleteExp) != len(deleted) {
rt[i].err = fmt.Errorf("delete set mismatch")
}
for _, insert := range inserted {
if _, present := insertExp[string(insert)]; !present {
rt[i].err = fmt.Errorf("missing inserted node")
}
}
for _, del := range deleted {
if _, present := deleteExp[string(del)]; !present {
rt[i].err = fmt.Errorf("missing deleted node")
}
}
}
// Abort the test on error.
if rt[i].err != nil {
return false
}
}
return true
}
func TestRandom(t *testing.T) {
if err := quick.Check(runRandTest, nil); err != nil {
if cerr, ok := err.(*quick.CheckError); ok {
t.Fatalf("random test iteration %d failed: %s", cerr.Count, spew.Sdump(cerr.In))
}
t.Fatal(err)
}
}
func BenchmarkGet(b *testing.B) { benchGet(b) }
func BenchmarkUpdateBE(b *testing.B) { benchUpdate(b, binary.BigEndian) }
func BenchmarkUpdateLE(b *testing.B) { benchUpdate(b, binary.LittleEndian) }
const benchElemCount = 20000
func benchGet(b *testing.B) {
triedb := NewDatabase(rawdb.NewMemoryDatabase())
trie := NewEmpty(triedb)
k := make([]byte, 32)
for i := 0; i < benchElemCount; i++ {
binary.LittleEndian.PutUint64(k, uint64(i))
trie.Update(k, k)
}
binary.LittleEndian.PutUint64(k, benchElemCount/2)
b.ResetTimer()
for i := 0; i < b.N; i++ {
trie.Get(k)
}
b.StopTimer()
}
func benchUpdate(b *testing.B, e binary.ByteOrder) *Trie {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
k := make([]byte, 32)
b.ReportAllocs()
for i := 0; i < b.N; i++ {
e.PutUint64(k, uint64(i))
trie.Update(k, k)
}
return trie
}
// Benchmarks the trie hashing. Since the trie caches the result of any operation,
// we cannot use b.N as the number of hashing rouns, since all rounds apart from
// the first one will be NOOP. As such, we'll use b.N as the number of account to
// insert into the trie before measuring the hashing.
// BenchmarkHash-6 288680 4561 ns/op 682 B/op 9 allocs/op
// BenchmarkHash-6 275095 4800 ns/op 685 B/op 9 allocs/op
// pure hasher:
// BenchmarkHash-6 319362 4230 ns/op 675 B/op 9 allocs/op
// BenchmarkHash-6 257460 4674 ns/op 689 B/op 9 allocs/op
// With hashing in-between and pure hasher:
// BenchmarkHash-6 225417 7150 ns/op 982 B/op 12 allocs/op
// BenchmarkHash-6 220378 6197 ns/op 983 B/op 12 allocs/op
// same with old hasher
// BenchmarkHash-6 229758 6437 ns/op 981 B/op 12 allocs/op
// BenchmarkHash-6 212610 7137 ns/op 986 B/op 12 allocs/op
func BenchmarkHash(b *testing.B) {
// Create a realistic account trie to hash. We're first adding and hashing N
// entries, then adding N more.
addresses, accounts := makeAccounts(2 * b.N)
// Insert the accounts into the trie and hash it
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
i := 0
for ; i < len(addresses)/2; i++ {
trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i])
}
trie.Hash()
for ; i < len(addresses); i++ {
trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i])
}
b.ResetTimer()
b.ReportAllocs()
//trie.hashRoot(nil, nil)
trie.Hash()
}
// Benchmarks the trie Commit following a Hash. Since the trie caches the result of any operation,
// we cannot use b.N as the number of hashing rouns, since all rounds apart from
// the first one will be NOOP. As such, we'll use b.N as the number of account to
// insert into the trie before measuring the hashing.
func BenchmarkCommitAfterHash(b *testing.B) {
b.Run("no-onleaf", func(b *testing.B) {
benchmarkCommitAfterHash(b, false)
})
b.Run("with-onleaf", func(b *testing.B) {
benchmarkCommitAfterHash(b, true)
})
}
func benchmarkCommitAfterHash(b *testing.B, collectLeaf bool) {
// Make the random benchmark deterministic
addresses, accounts := makeAccounts(b.N)
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
for i := 0; i < len(addresses); i++ {
trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i])
}
// Insert the accounts into the trie and hash it
trie.Hash()
b.ResetTimer()
b.ReportAllocs()
trie.Commit(collectLeaf)
}
func TestTinyTrie(t *testing.T) {
// Create a realistic account trie to hash
_, accounts := makeAccounts(5)
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
trie.Update(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001337"), accounts[3])
if exp, root := common.HexToHash("8c6a85a4d9fda98feff88450299e574e5378e32391f75a055d470ac0653f1005"), trie.Hash(); exp != root {
t.Errorf("1: got %x, exp %x", root, exp)
}
trie.Update(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001338"), accounts[4])
if exp, root := common.HexToHash("ec63b967e98a5720e7f720482151963982890d82c9093c0d486b7eb8883a66b1"), trie.Hash(); exp != root {
t.Errorf("2: got %x, exp %x", root, exp)
}
trie.Update(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000001339"), accounts[4])
if exp, root := common.HexToHash("0608c1d1dc3905fa22204c7a0e43644831c3b6d3def0f274be623a948197e64a"), trie.Hash(); exp != root {
t.Errorf("3: got %x, exp %x", root, exp)
}
checktr := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
it := NewIterator(trie.NodeIterator(nil))
for it.Next() {
checktr.Update(it.Key, it.Value)
}
if troot, itroot := trie.Hash(), checktr.Hash(); troot != itroot {
t.Fatalf("hash mismatch in opItercheckhash, trie: %x, check: %x", troot, itroot)
}
}
func TestCommitAfterHash(t *testing.T) {
// Create a realistic account trie to hash
addresses, accounts := makeAccounts(1000)
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
for i := 0; i < len(addresses); i++ {
trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i])
}
// Insert the accounts into the trie and hash it
trie.Hash()
trie.Commit(false)
root := trie.Hash()
exp := common.HexToHash("72f9d3f3fe1e1dd7b8936442e7642aef76371472d94319900790053c493f3fe6")
if exp != root {
t.Errorf("got %x, exp %x", root, exp)
}
root, _, _ = trie.Commit(false)
if exp != root {
t.Errorf("got %x, exp %x", root, exp)
}
}
func makeAccounts(size int) (addresses [][20]byte, accounts [][]byte) {
// Make the random benchmark deterministic
random := rand.New(rand.NewSource(0))
// Create a realistic account trie to hash
addresses = make([][20]byte, size)
for i := 0; i < len(addresses); i++ {
data := make([]byte, 20)
random.Read(data)
copy(addresses[i][:], data)
}
accounts = make([][]byte, len(addresses))
for i := 0; i < len(accounts); i++ {
var (
nonce = uint64(random.Int63())
root = emptyRoot
code = crypto.Keccak256(nil)
)
// The big.Rand function is not deterministic with regards to 64 vs 32 bit systems,
// and will consume different amount of data from the rand source.
//balance = new(big.Int).Rand(random, new(big.Int).Exp(common.Big2, common.Big256, nil))
// Therefore, we instead just read via byte buffer
numBytes := random.Uint32() % 33 // [0, 32] bytes
balanceBytes := make([]byte, numBytes)
random.Read(balanceBytes)
balance := new(big.Int).SetBytes(balanceBytes)
data, _ := rlp.EncodeToBytes(&types.StateAccount{Nonce: nonce, Balance: balance, Root: root, CodeHash: code})
accounts[i] = data
}
return addresses, accounts
}
// spongeDb is a dummy db backend which accumulates writes in a sponge
type spongeDb struct {
sponge hash.Hash
id string
journal []string
}
func (s *spongeDb) Has(key []byte) (bool, error) { panic("implement me") }
func (s *spongeDb) Get(key []byte) ([]byte, error) { return nil, errors.New("no such elem") }
func (s *spongeDb) Delete(key []byte) error { panic("implement me") }
func (s *spongeDb) NewBatch() ethdb.Batch { return &spongeBatch{s} }
func (s *spongeDb) NewBatchWithSize(size int) ethdb.Batch { return &spongeBatch{s} }
func (s *spongeDb) NewSnapshot() (ethdb.Snapshot, error) { panic("implement me") }
func (s *spongeDb) Stat(property string) (string, error) { panic("implement me") }
func (s *spongeDb) Compact(start []byte, limit []byte) error { panic("implement me") }
func (s *spongeDb) Close() error { return nil }
func (s *spongeDb) Put(key []byte, value []byte) error {
valbrief := value
if len(valbrief) > 8 {
valbrief = valbrief[:8]
}
s.journal = append(s.journal, fmt.Sprintf("%v: PUT([%x...], [%d bytes] %x...)\n", s.id, key[:8], len(value), valbrief))
s.sponge.Write(key)
s.sponge.Write(value)
return nil
}
func (s *spongeDb) NewIterator(prefix []byte, start []byte) ethdb.Iterator { panic("implement me") }
// spongeBatch is a dummy batch which immediately writes to the underlying spongedb
type spongeBatch struct {
db *spongeDb
}
func (b *spongeBatch) Put(key, value []byte) error {
b.db.Put(key, value)
return nil
}
func (b *spongeBatch) Delete(key []byte) error { panic("implement me") }
func (b *spongeBatch) ValueSize() int { return 100 }
func (b *spongeBatch) Write() error { return nil }
func (b *spongeBatch) Reset() {}
func (b *spongeBatch) Replay(w ethdb.KeyValueWriter) error { return nil }
// TestCommitSequence tests that the trie.Commit operation writes the elements of the trie
// in the expected order, and calls the callbacks in the expected order.
// The test data was based on the 'master' code, and is basically random. It can be used
// to check whether changes to the trie modifies the write order or data in any way.
func TestCommitSequence(t *testing.T) {
for i, tc := range []struct {
count int
expWriteSeqHash []byte
expCallbackSeqHash []byte
}{
{20, common.FromHex("873c78df73d60e59d4a2bcf3716e8bfe14554549fea2fc147cb54129382a8066"),
common.FromHex("ff00f91ac05df53b82d7f178d77ada54fd0dca64526f537034a5dbe41b17df2a")},
{200, common.FromHex("ba03d891bb15408c940eea5ee3d54d419595102648d02774a0268d892add9c8e"),
common.FromHex("f3cd509064c8d319bbdd1c68f511850a902ad275e6ed5bea11547e23d492a926")},
{2000, common.FromHex("f7a184f20df01c94f09537401d11e68d97ad0c00115233107f51b9c287ce60c7"),
common.FromHex("ff795ea898ba1e4cfed4a33b4cf5535a347a02cf931f88d88719faf810f9a1c9")},
} {
addresses, accounts := makeAccounts(tc.count)
// This spongeDb is used to check the sequence of disk-db-writes
s := &spongeDb{sponge: sha3.NewLegacyKeccak256()}
db := NewDatabase(s)
trie := NewEmpty(db)
// Another sponge is used to check the callback-sequence
callbackSponge := sha3.NewLegacyKeccak256()
// Fill the trie with elements
for i := 0; i < tc.count; i++ {
trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i])
}
// Flush trie -> database
root, nodes, _ := trie.Commit(false)
db.Update(NewWithNodeSet(nodes))
// Flush memdb -> disk (sponge)
db.Commit(root, false, func(c common.Hash) {
// And spongify the callback-order
callbackSponge.Write(c[:])
})
if got, exp := s.sponge.Sum(nil), tc.expWriteSeqHash; !bytes.Equal(got, exp) {
t.Errorf("test %d, disk write sequence wrong:\ngot %x exp %x\n", i, got, exp)
}
if got, exp := callbackSponge.Sum(nil), tc.expCallbackSeqHash; !bytes.Equal(got, exp) {
t.Errorf("test %d, call back sequence wrong:\ngot: %x exp %x\n", i, got, exp)
}
}
}
// TestCommitSequenceRandomBlobs is identical to TestCommitSequence
// but uses random blobs instead of 'accounts'
func TestCommitSequenceRandomBlobs(t *testing.T) {
for i, tc := range []struct {
count int
expWriteSeqHash []byte
expCallbackSeqHash []byte
}{
{20, common.FromHex("8e4a01548551d139fa9e833ebc4e66fc1ba40a4b9b7259d80db32cff7b64ebbc"),
common.FromHex("450238d73bc36dc6cc6f926987e5428535e64be403877c4560e238a52749ba24")},
{200, common.FromHex("6869b4e7b95f3097a19ddb30ff735f922b915314047e041614df06958fc50554"),
common.FromHex("0ace0b03d6cb8c0b82f6289ef5b1a1838306b455a62dafc63cada8e2924f2550")},
{2000, common.FromHex("444200e6f4e2df49f77752f629a96ccf7445d4698c164f962bbd85a0526ef424"),
common.FromHex("117d30dafaa62a1eed498c3dfd70982b377ba2b46dd3e725ed6120c80829e518")},
} {
prng := rand.New(rand.NewSource(int64(i)))
// This spongeDb is used to check the sequence of disk-db-writes
s := &spongeDb{sponge: sha3.NewLegacyKeccak256()}
db := NewDatabase(s)
trie := NewEmpty(db)
// Another sponge is used to check the callback-sequence
callbackSponge := sha3.NewLegacyKeccak256()
// Fill the trie with elements
for i := 0; i < tc.count; i++ {
key := make([]byte, 32)
var val []byte
// 50% short elements, 50% large elements
if prng.Intn(2) == 0 {
val = make([]byte, 1+prng.Intn(32))
} else {
val = make([]byte, 1+prng.Intn(4096))
}
prng.Read(key)
prng.Read(val)
trie.Update(key, val)
}
// Flush trie -> database
root, nodes, _ := trie.Commit(false)
db.Update(NewWithNodeSet(nodes))
// Flush memdb -> disk (sponge)
db.Commit(root, false, func(c common.Hash) {
// And spongify the callback-order
callbackSponge.Write(c[:])
})
if got, exp := s.sponge.Sum(nil), tc.expWriteSeqHash; !bytes.Equal(got, exp) {
t.Fatalf("test %d, disk write sequence wrong:\ngot %x exp %x\n", i, got, exp)
}
if got, exp := callbackSponge.Sum(nil), tc.expCallbackSeqHash; !bytes.Equal(got, exp) {
t.Fatalf("test %d, call back sequence wrong:\ngot: %x exp %x\n", i, got, exp)
}
}
}
func TestCommitSequenceStackTrie(t *testing.T) {
for count := 1; count < 200; count++ {
prng := rand.New(rand.NewSource(int64(count)))
// This spongeDb is used to check the sequence of disk-db-writes
s := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "a"}
db := NewDatabase(s)
trie := NewEmpty(db)
// Another sponge is used for the stacktrie commits
stackTrieSponge := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "b"}
stTrie := NewStackTrie(stackTrieSponge)
// Fill the trie with elements
for i := 0; i < count; i++ {
// For the stack trie, we need to do inserts in proper order
key := make([]byte, 32)
binary.BigEndian.PutUint64(key, uint64(i))
var val []byte
// 50% short elements, 50% large elements
if prng.Intn(2) == 0 {
val = make([]byte, 1+prng.Intn(32))
} else {
val = make([]byte, 1+prng.Intn(1024))
}
prng.Read(val)
trie.TryUpdate(key, val)
stTrie.TryUpdate(key, val)
}
// Flush trie -> database
root, nodes, _ := trie.Commit(false)
// Flush memdb -> disk (sponge)
db.Update(NewWithNodeSet(nodes))
db.Commit(root, false, nil)
// And flush stacktrie -> disk
stRoot, err := stTrie.Commit()
if err != nil {
t.Fatalf("Failed to commit stack trie %v", err)
}
if stRoot != root {
t.Fatalf("root wrong, got %x exp %x", stRoot, root)
}
if got, exp := stackTrieSponge.sponge.Sum(nil), s.sponge.Sum(nil); !bytes.Equal(got, exp) {
// Show the journal
t.Logf("Expected:")
for i, v := range s.journal {
t.Logf("op %d: %v", i, v)
}
t.Logf("Stacktrie:")
for i, v := range stackTrieSponge.journal {
t.Logf("op %d: %v", i, v)
}
t.Fatalf("test %d, disk write sequence wrong:\ngot %x exp %x\n", count, got, exp)
}
}
}
// TestCommitSequenceSmallRoot tests that a trie which is essentially only a
// small (<32 byte) shortnode with an included value is properly committed to a
// database.
// This case might not matter, since in practice, all keys are 32 bytes, which means
// that even a small trie which contains a leaf will have an extension making it
// not fit into 32 bytes, rlp-encoded. However, it's still the correct thing to do.
func TestCommitSequenceSmallRoot(t *testing.T) {
s := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "a"}
db := NewDatabase(s)
trie := NewEmpty(db)
// Another sponge is used for the stacktrie commits
stackTrieSponge := &spongeDb{sponge: sha3.NewLegacyKeccak256(), id: "b"}
stTrie := NewStackTrie(stackTrieSponge)
// Add a single small-element to the trie(s)
key := make([]byte, 5)
key[0] = 1
trie.TryUpdate(key, []byte{0x1})
stTrie.TryUpdate(key, []byte{0x1})
// Flush trie -> database
root, nodes, _ := trie.Commit(false)
// Flush memdb -> disk (sponge)
db.Update(NewWithNodeSet(nodes))
db.Commit(root, false, nil)
// And flush stacktrie -> disk
stRoot, err := stTrie.Commit()
if err != nil {
t.Fatalf("Failed to commit stack trie %v", err)
}
if stRoot != root {
t.Fatalf("root wrong, got %x exp %x", stRoot, root)
}
t.Logf("root: %x\n", stRoot)
if got, exp := stackTrieSponge.sponge.Sum(nil), s.sponge.Sum(nil); !bytes.Equal(got, exp) {
t.Fatalf("test, disk write sequence wrong:\ngot %x exp %x\n", got, exp)
}
}
// BenchmarkCommitAfterHashFixedSize benchmarks the Commit (after Hash) of a fixed number of updates to a trie.
// This benchmark is meant to capture the difference on efficiency of small versus large changes. Typically,
// storage tries are small (a couple of entries), whereas the full post-block account trie update is large (a couple
// of thousand entries)
func BenchmarkHashFixedSize(b *testing.B) {
b.Run("10", func(b *testing.B) {
b.StopTimer()
acc, add := makeAccounts(20)
for i := 0; i < b.N; i++ {
benchmarkHashFixedSize(b, acc, add)
}
})
b.Run("100", func(b *testing.B) {
b.StopTimer()
acc, add := makeAccounts(100)
for i := 0; i < b.N; i++ {
benchmarkHashFixedSize(b, acc, add)
}
})
b.Run("1K", func(b *testing.B) {
b.StopTimer()
acc, add := makeAccounts(1000)
for i := 0; i < b.N; i++ {
benchmarkHashFixedSize(b, acc, add)
}
})
b.Run("10K", func(b *testing.B) {
b.StopTimer()
acc, add := makeAccounts(10000)
for i := 0; i < b.N; i++ {
benchmarkHashFixedSize(b, acc, add)
}
})
b.Run("100K", func(b *testing.B) {
b.StopTimer()
acc, add := makeAccounts(100000)
for i := 0; i < b.N; i++ {
benchmarkHashFixedSize(b, acc, add)
}
})
}
func benchmarkHashFixedSize(b *testing.B, addresses [][20]byte, accounts [][]byte) {
b.ReportAllocs()
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
for i := 0; i < len(addresses); i++ {
trie.Update(crypto.Keccak256(addresses[i][:]), accounts[i])
}
// Insert the accounts into the trie and hash it
b.StartTimer()
trie.Hash()
b.StopTimer()
}