397 lines
11 KiB
Go
397 lines
11 KiB
Go
|
// Copyright 2019 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 snapshot
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/binary"
|
||
|
|
"math/rand"
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
"github.com/ethereum/go-ethereum/common"
|
||
|
|
)
|
||
|
|
|
||
|
|
// TestIteratorBasics tests some simple single-layer iteration
|
||
|
|
func TestIteratorBasics(t *testing.T) {
|
||
|
|
var (
|
||
|
|
accounts = make(map[common.Hash][]byte)
|
||
|
|
storage = make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
)
|
||
|
|
// Fill up a parent
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
h := randomHash()
|
||
|
|
data := randomAccount()
|
||
|
|
accounts[h] = data
|
||
|
|
if rand.Intn(20) < 10 {
|
||
|
|
accStorage := make(map[common.Hash][]byte)
|
||
|
|
value := make([]byte, 32)
|
||
|
|
rand.Read(value)
|
||
|
|
accStorage[randomHash()] = value
|
||
|
|
storage[h] = accStorage
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Add some (identical) layers on top
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{}, accounts, storage)
|
||
|
|
it := parent.newAccountIterator()
|
||
|
|
verifyIterator(t, 100, it)
|
||
|
|
}
|
||
|
|
|
||
|
|
type testIterator struct {
|
||
|
|
values []byte
|
||
|
|
}
|
||
|
|
|
||
|
|
func newTestIterator(values ...byte) *testIterator {
|
||
|
|
return &testIterator{values}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ti *testIterator) Seek(common.Hash) {
|
||
|
|
panic("implement me")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ti *testIterator) Next() bool {
|
||
|
|
ti.values = ti.values[1:]
|
||
|
|
if len(ti.values) == 0 {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ti *testIterator) Error() error {
|
||
|
|
panic("implement me")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ti *testIterator) Key() common.Hash {
|
||
|
|
return common.BytesToHash([]byte{ti.values[0]})
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ti *testIterator) Value() []byte {
|
||
|
|
panic("implement me")
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestFastIteratorBasics(t *testing.T) {
|
||
|
|
type testCase struct {
|
||
|
|
lists [][]byte
|
||
|
|
expKeys []byte
|
||
|
|
}
|
||
|
|
for i, tc := range []testCase{
|
||
|
|
{lists: [][]byte{{0, 1, 8}, {1, 2, 8}, {2, 9}, {4},
|
||
|
|
{7, 14, 15}, {9, 13, 15, 16}},
|
||
|
|
expKeys: []byte{0, 1, 2, 4, 7, 8, 9, 13, 14, 15, 16}},
|
||
|
|
{lists: [][]byte{{0, 8}, {1, 2, 8}, {7, 14, 15}, {8, 9},
|
||
|
|
{9, 10}, {10, 13, 15, 16}},
|
||
|
|
expKeys: []byte{0, 1, 2, 7, 8, 9, 10, 13, 14, 15, 16}},
|
||
|
|
} {
|
||
|
|
var iterators []AccountIterator
|
||
|
|
for _, data := range tc.lists {
|
||
|
|
iterators = append(iterators, newTestIterator(data...))
|
||
|
|
|
||
|
|
}
|
||
|
|
fi := &fastAccountIterator{
|
||
|
|
iterators: iterators,
|
||
|
|
initiated: false,
|
||
|
|
}
|
||
|
|
count := 0
|
||
|
|
for fi.Next() {
|
||
|
|
if got, exp := fi.Key()[31], tc.expKeys[count]; exp != got {
|
||
|
|
t.Errorf("tc %d, [%d]: got %d exp %d", i, count, got, exp)
|
||
|
|
}
|
||
|
|
count++
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func verifyIterator(t *testing.T, expCount int, it AccountIterator) {
|
||
|
|
var (
|
||
|
|
i = 0
|
||
|
|
last = common.Hash{}
|
||
|
|
)
|
||
|
|
for it.Next() {
|
||
|
|
v := it.Key()
|
||
|
|
if bytes.Compare(last[:], v[:]) >= 0 {
|
||
|
|
t.Errorf("Wrong order:\n%x \n>=\n%x", last, v)
|
||
|
|
}
|
||
|
|
i++
|
||
|
|
}
|
||
|
|
if i != expCount {
|
||
|
|
t.Errorf("iterator len wrong, expected %d, got %d", expCount, i)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// TestIteratorTraversal tests some simple multi-layer iteration
|
||
|
|
func TestIteratorTraversal(t *testing.T) {
|
||
|
|
var (
|
||
|
|
storage = make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
)
|
||
|
|
|
||
|
|
mkAccounts := func(args ...string) map[common.Hash][]byte {
|
||
|
|
accounts := make(map[common.Hash][]byte)
|
||
|
|
for _, h := range args {
|
||
|
|
accounts[common.HexToHash(h)] = randomAccount()
|
||
|
|
}
|
||
|
|
return accounts
|
||
|
|
}
|
||
|
|
// entries in multiple layers should only become output once
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{},
|
||
|
|
mkAccounts("0xaa", "0xee", "0xff", "0xf0"), storage)
|
||
|
|
|
||
|
|
child := parent.Update(common.Hash{},
|
||
|
|
mkAccounts("0xbb", "0xdd", "0xf0"), storage)
|
||
|
|
|
||
|
|
child = child.Update(common.Hash{},
|
||
|
|
mkAccounts("0xcc", "0xf0", "0xff"), storage)
|
||
|
|
|
||
|
|
// single layer iterator
|
||
|
|
verifyIterator(t, 3, child.newAccountIterator())
|
||
|
|
// multi-layered binary iterator
|
||
|
|
verifyIterator(t, 7, child.newBinaryAccountIterator())
|
||
|
|
// multi-layered fast iterator
|
||
|
|
verifyIterator(t, 7, child.newFastAccountIterator())
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestIteratorLargeTraversal(t *testing.T) {
|
||
|
|
// This testcase is a bit notorious -- all layers contain the exact
|
||
|
|
// same 200 accounts.
|
||
|
|
var storage = make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
mkAccounts := func(num int) map[common.Hash][]byte {
|
||
|
|
accounts := make(map[common.Hash][]byte)
|
||
|
|
for i := 0; i < num; i++ {
|
||
|
|
h := common.Hash{}
|
||
|
|
binary.BigEndian.PutUint64(h[:], uint64(i+1))
|
||
|
|
accounts[h] = randomAccount()
|
||
|
|
}
|
||
|
|
return accounts
|
||
|
|
}
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{},
|
||
|
|
mkAccounts(200), storage)
|
||
|
|
child := parent.Update(common.Hash{},
|
||
|
|
mkAccounts(200), storage)
|
||
|
|
for i := 2; i < 100; i++ {
|
||
|
|
child = child.Update(common.Hash{},
|
||
|
|
mkAccounts(200), storage)
|
||
|
|
}
|
||
|
|
// single layer iterator
|
||
|
|
verifyIterator(t, 200, child.newAccountIterator())
|
||
|
|
// multi-layered binary iterator
|
||
|
|
verifyIterator(t, 200, child.newBinaryAccountIterator())
|
||
|
|
// multi-layered fast iterator
|
||
|
|
verifyIterator(t, 200, child.newFastAccountIterator())
|
||
|
|
}
|
||
|
|
|
||
|
|
// BenchmarkIteratorTraversal is a bit a bit notorious -- all layers contain the exact
|
||
|
|
// same 200 accounts. That means that we need to process 2000 items, but only
|
||
|
|
// spit out 200 values eventually.
|
||
|
|
//
|
||
|
|
//BenchmarkIteratorTraversal/binary_iterator-6 2008 573290 ns/op 9520 B/op 199 allocs/op
|
||
|
|
//BenchmarkIteratorTraversal/fast_iterator-6 1946 575596 ns/op 20146 B/op 134 allocs/op
|
||
|
|
func BenchmarkIteratorTraversal(b *testing.B) {
|
||
|
|
|
||
|
|
var storage = make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
|
||
|
|
mkAccounts := func(num int) map[common.Hash][]byte {
|
||
|
|
accounts := make(map[common.Hash][]byte)
|
||
|
|
for i := 0; i < num; i++ {
|
||
|
|
h := common.Hash{}
|
||
|
|
binary.BigEndian.PutUint64(h[:], uint64(i+1))
|
||
|
|
accounts[h] = randomAccount()
|
||
|
|
}
|
||
|
|
return accounts
|
||
|
|
}
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{},
|
||
|
|
mkAccounts(200), storage)
|
||
|
|
|
||
|
|
child := parent.Update(common.Hash{},
|
||
|
|
mkAccounts(200), storage)
|
||
|
|
|
||
|
|
for i := 2; i < 100; i++ {
|
||
|
|
child = child.Update(common.Hash{},
|
||
|
|
mkAccounts(200), storage)
|
||
|
|
|
||
|
|
}
|
||
|
|
// We call this once before the benchmark, so the creation of
|
||
|
|
// sorted accountlists are not included in the results.
|
||
|
|
child.newBinaryAccountIterator()
|
||
|
|
b.Run("binary iterator", func(b *testing.B) {
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
got := 0
|
||
|
|
it := child.newBinaryAccountIterator()
|
||
|
|
for it.Next() {
|
||
|
|
got++
|
||
|
|
}
|
||
|
|
if exp := 200; got != exp {
|
||
|
|
b.Errorf("iterator len wrong, expected %d, got %d", exp, got)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
b.Run("fast iterator", func(b *testing.B) {
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
got := 0
|
||
|
|
it := child.newFastAccountIterator()
|
||
|
|
for it.Next() {
|
||
|
|
got++
|
||
|
|
}
|
||
|
|
if exp := 200; got != exp {
|
||
|
|
b.Errorf("iterator len wrong, expected %d, got %d", exp, got)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// BenchmarkIteratorLargeBaselayer is a pretty realistic benchmark, where
|
||
|
|
// the baselayer is a lot larger than the upper layer.
|
||
|
|
//
|
||
|
|
// This is heavy on the binary iterator, which in most cases will have to
|
||
|
|
// call recursively 100 times for the majority of the values
|
||
|
|
//
|
||
|
|
// BenchmarkIteratorLargeBaselayer/binary_iterator-6 585 2067377 ns/op 9520 B/op 199 allocs/op
|
||
|
|
// BenchmarkIteratorLargeBaselayer/fast_iterator-6 13198 91043 ns/op 8601 B/op 118 allocs/op
|
||
|
|
func BenchmarkIteratorLargeBaselayer(b *testing.B) {
|
||
|
|
var storage = make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
|
||
|
|
mkAccounts := func(num int) map[common.Hash][]byte {
|
||
|
|
accounts := make(map[common.Hash][]byte)
|
||
|
|
for i := 0; i < num; i++ {
|
||
|
|
h := common.Hash{}
|
||
|
|
binary.BigEndian.PutUint64(h[:], uint64(i+1))
|
||
|
|
accounts[h] = randomAccount()
|
||
|
|
}
|
||
|
|
return accounts
|
||
|
|
}
|
||
|
|
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{},
|
||
|
|
mkAccounts(2000), storage)
|
||
|
|
|
||
|
|
child := parent.Update(common.Hash{},
|
||
|
|
mkAccounts(20), storage)
|
||
|
|
|
||
|
|
for i := 2; i < 100; i++ {
|
||
|
|
child = child.Update(common.Hash{},
|
||
|
|
mkAccounts(20), storage)
|
||
|
|
|
||
|
|
}
|
||
|
|
// We call this once before the benchmark, so the creation of
|
||
|
|
// sorted accountlists are not included in the results.
|
||
|
|
child.newBinaryAccountIterator()
|
||
|
|
b.Run("binary iterator", func(b *testing.B) {
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
got := 0
|
||
|
|
it := child.newBinaryAccountIterator()
|
||
|
|
for it.Next() {
|
||
|
|
got++
|
||
|
|
}
|
||
|
|
if exp := 2000; got != exp {
|
||
|
|
b.Errorf("iterator len wrong, expected %d, got %d", exp, got)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
b.Run("fast iterator", func(b *testing.B) {
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
got := 0
|
||
|
|
it := child.newFastAccountIterator()
|
||
|
|
for it.Next() {
|
||
|
|
got++
|
||
|
|
}
|
||
|
|
if exp := 2000; got != exp {
|
||
|
|
b.Errorf("iterator len wrong, expected %d, got %d", exp, got)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// TestIteratorFlatting tests what happens when we
|
||
|
|
// - have a live iterator on child C (parent C1 -> C2 .. CN)
|
||
|
|
// - flattens C2 all the way into CN
|
||
|
|
// - continues iterating
|
||
|
|
// Right now, this "works" simply because the keys do not change -- the
|
||
|
|
// iterator is not aware that a layer has become stale. This naive
|
||
|
|
// solution probably won't work in the long run, however
|
||
|
|
func TestIteratorFlattning(t *testing.T) {
|
||
|
|
var (
|
||
|
|
storage = make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
)
|
||
|
|
mkAccounts := func(args ...string) map[common.Hash][]byte {
|
||
|
|
accounts := make(map[common.Hash][]byte)
|
||
|
|
for _, h := range args {
|
||
|
|
accounts[common.HexToHash(h)] = randomAccount()
|
||
|
|
}
|
||
|
|
return accounts
|
||
|
|
}
|
||
|
|
// entries in multiple layers should only become output once
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{},
|
||
|
|
mkAccounts("0xaa", "0xee", "0xff", "0xf0"), storage)
|
||
|
|
|
||
|
|
child := parent.Update(common.Hash{},
|
||
|
|
mkAccounts("0xbb", "0xdd", "0xf0"), storage)
|
||
|
|
|
||
|
|
child = child.Update(common.Hash{},
|
||
|
|
mkAccounts("0xcc", "0xf0", "0xff"), storage)
|
||
|
|
|
||
|
|
it := child.newFastAccountIterator()
|
||
|
|
child.parent.(*diffLayer).flatten()
|
||
|
|
// The parent should now be stale
|
||
|
|
verifyIterator(t, 7, it)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestIteratorSeek(t *testing.T) {
|
||
|
|
storage := make(map[common.Hash]map[common.Hash][]byte)
|
||
|
|
mkAccounts := func(args ...string) map[common.Hash][]byte {
|
||
|
|
accounts := make(map[common.Hash][]byte)
|
||
|
|
for _, h := range args {
|
||
|
|
accounts[common.HexToHash(h)] = randomAccount()
|
||
|
|
}
|
||
|
|
return accounts
|
||
|
|
}
|
||
|
|
parent := newDiffLayer(emptyLayer(), common.Hash{},
|
||
|
|
mkAccounts("0xaa", "0xee", "0xff", "0xf0"), storage)
|
||
|
|
it := AccountIterator(parent.newAccountIterator())
|
||
|
|
// expected: ee, f0, ff
|
||
|
|
it.Seek(common.HexToHash("0xdd"))
|
||
|
|
verifyIterator(t, 3, it)
|
||
|
|
|
||
|
|
it = parent.newAccountIterator()
|
||
|
|
// expected: ee, f0, ff
|
||
|
|
it.Seek(common.HexToHash("0xaa"))
|
||
|
|
verifyIterator(t, 3, it)
|
||
|
|
|
||
|
|
it = parent.newAccountIterator()
|
||
|
|
// expected: nothing
|
||
|
|
it.Seek(common.HexToHash("0xff"))
|
||
|
|
verifyIterator(t, 0, it)
|
||
|
|
|
||
|
|
child := parent.Update(common.Hash{},
|
||
|
|
mkAccounts("0xbb", "0xdd", "0xf0"), storage)
|
||
|
|
|
||
|
|
child = child.Update(common.Hash{},
|
||
|
|
mkAccounts("0xcc", "0xf0", "0xff"), storage)
|
||
|
|
|
||
|
|
it = child.newFastAccountIterator()
|
||
|
|
// expected: cc, dd, ee, f0, ff
|
||
|
|
it.Seek(common.HexToHash("0xbb"))
|
||
|
|
verifyIterator(t, 5, it)
|
||
|
|
|
||
|
|
it = child.newFastAccountIterator()
|
||
|
|
it.Seek(common.HexToHash("0xef"))
|
||
|
|
// exp: f0, ff
|
||
|
|
verifyIterator(t, 2, it)
|
||
|
|
|
||
|
|
it = child.newFastAccountIterator()
|
||
|
|
it.Seek(common.HexToHash("0xf0"))
|
||
|
|
verifyIterator(t, 1, it)
|
||
|
|
|
||
|
|
it.Seek(common.HexToHash("0xff"))
|
||
|
|
verifyIterator(t, 0, it)
|
||
|
|
}
|