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This commit is contained in:
obscuren 2015-03-16 16:36:58 +01:00
parent d338650089
commit 0dd9ac375b
5 changed files with 68 additions and 90 deletions
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14
trie/iterator.go
View File

@ -2,19 +2,17 @@ package trie
import (
"bytes"
"github.com/ethereum/go-ethereum/common"
)
type Iterator struct {
trie *Trie
Key common.Hash
Key []byte
Value []byte
}
func NewIterator(trie *Trie) *Iterator {
return &Iterator{trie: trie}
return &Iterator{trie: trie, Key: nil}
}
func (self *Iterator) Next() bool {
@ -22,15 +20,15 @@ func (self *Iterator) Next() bool {
defer self.trie.mu.Unlock()
isIterStart := false
if (self.Key == common.Hash{}) {
if self.Key == nil {
isIterStart = true
//self.Key = make([]byte, 32)
self.Key = make([]byte, 32)
}
key := RemTerm(CompactHexDecode(self.Key.Str()))
key := RemTerm(CompactHexDecode(string(self.Key)))
k := self.next(self.trie.root, key, isIterStart)
self.Key = common.StringToHash(DecodeCompact(k))
self.Key = []byte(DecodeCompact(k))
return len(k) > 0
}

2
trie/iterator_test.go
View File

@ -22,7 +22,7 @@ func TestIterator(t *testing.T) {
it := trie.Iterator()
for it.Next() {
v[it.Key.Str()] = true
v[string(it.Key)] = true
}
for k, found := range v {

26
trie/secure_trie.go
View File

@ -1,38 +1,34 @@
package trie
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
import "github.com/ethereum/go-ethereum/crypto"
type SecureTrie struct {
*Trie
}
func NewSecure(root common.Hash, backend Backend) *SecureTrie {
func NewSecure(root []byte, backend Backend) *SecureTrie {
return &SecureTrie{New(root, backend)}
}
func (self *SecureTrie) Update(key common.Hash, value []byte) Node {
return self.Trie.Update(common.BytesToHash(crypto.Sha3(key[:])), value)
func (self *SecureTrie) Update(key, value []byte) Node {
return self.Trie.Update(crypto.Sha3(key), value)
}
func (self *SecureTrie) UpdateString(key, value string) Node {
return self.Update(common.StringToHash(key), []byte(value))
return self.Update([]byte(key), []byte(value))
}
func (self *SecureTrie) Get(key common.Hash) []byte {
return self.Trie.Get(common.BytesToHash(crypto.Sha3(key[:])))
func (self *SecureTrie) Get(key []byte) []byte {
return self.Trie.Get(crypto.Sha3(key))
}
func (self *SecureTrie) GetString(key string) []byte {
return self.Get(common.StringToHash(key))
return self.Get([]byte(key))
}
func (self *SecureTrie) Delete(key common.Hash) Node {
return self.Trie.Delete(common.BytesToHash(crypto.Sha3(key[:])))
func (self *SecureTrie) Delete(key []byte) Node {
return self.Trie.Delete(crypto.Sha3(key))
}
func (self *SecureTrie) DeleteString(key string) Node {
return self.Delete(common.StringToHash(key))
return self.Delete([]byte(key))
}
func (self *SecureTrie) Copy() *SecureTrie {

65
trie/trie.go
View File

@ -6,32 +6,31 @@ import (
"fmt"
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/common"
)
func ParanoiaCheck(t1 *Trie, backend Backend) (bool, *Trie) {
t2 := New(common.Hash{}, backend)
t2 := New(nil, backend)
it := t1.Iterator()
for it.Next() {
t2.Update(it.Key, it.Value)
}
a, b := t2.Hash(), t1.Hash()
return bytes.Equal(a[:], b[:]), t2
return bytes.Equal(t2.Hash(), t1.Hash()), t2
}
type Trie struct {
mu sync.Mutex
root Node
roothash common.Hash
roothash []byte
cache *Cache
revisions *list.List
}
func New(root common.Hash, backend Backend) *Trie {
func New(root []byte, backend Backend) *Trie {
trie := &Trie{}
trie.revisions = list.New()
trie.roothash = root
@ -39,8 +38,8 @@ func New(root common.Hash, backend Backend) *Trie {
trie.cache = NewCache(backend)
}
if (root != common.Hash{}) {
value := common.NewValueFromBytes(trie.cache.Get(root[:]))
if root != nil {
value := common.NewValueFromBytes(trie.cache.Get(root))
trie.root = trie.mknode(value)
}
@ -52,13 +51,9 @@ func (self *Trie) Iterator() *Iterator {
}
func (self *Trie) Copy() *Trie {
//cpy := make([]byte, 32)
//copy(cpy, self.roothash)
// cheap copying method
var cpy common.Hash
cpy.Set(self.roothash)
trie := New(common.Hash{}, nil)
cpy := make([]byte, 32)
copy(cpy, self.roothash)
trie := New(nil, nil)
trie.cache = self.cache.Copy()
if self.root != nil {
trie.root = self.root.Copy(trie)
@ -68,21 +63,21 @@ func (self *Trie) Copy() *Trie {
}
// Legacy support
func (self *Trie) Root() common.Hash { return self.Hash() }
func (self *Trie) Hash() common.Hash {
var hash common.Hash
func (self *Trie) Root() []byte { return self.Hash() }
func (self *Trie) Hash() []byte {
var hash []byte
if self.root != nil {
t := self.root.Hash()
if h, ok := t.(common.Hash); ok && (h != common.Hash{}) {
hash = h
if byts, ok := t.([]byte); ok && len(byts) > 0 {
hash = byts
} else {
hash = common.BytesToHash(crypto.Sha3(common.Encode(self.root.RlpData())))
hash = crypto.Sha3(common.Encode(self.root.RlpData()))
}
} else {
hash = common.BytesToHash(crypto.Sha3(common.Encode("")))
hash = crypto.Sha3(common.Encode(""))
}
if hash != self.roothash {
if !bytes.Equal(hash, self.roothash) {
self.revisions.PushBack(self.roothash)
self.roothash = hash
}
@ -107,21 +102,19 @@ func (self *Trie) Reset() {
self.cache.Reset()
if self.revisions.Len() > 0 {
revision := self.revisions.Remove(self.revisions.Back()).(common.Hash)
revision := self.revisions.Remove(self.revisions.Back()).([]byte)
self.roothash = revision
}
value := common.NewValueFromBytes(self.cache.Get(self.roothash[:]))
value := common.NewValueFromBytes(self.cache.Get(self.roothash))
self.root = self.mknode(value)
}
func (self *Trie) UpdateString(key, value string) Node {
return self.Update(common.StringToHash(key), []byte(value))
}
func (self *Trie) Update(key common.Hash, value []byte) Node {
func (self *Trie) UpdateString(key, value string) Node { return self.Update([]byte(key), []byte(value)) }
func (self *Trie) Update(key, value []byte) Node {
self.mu.Lock()
defer self.mu.Unlock()
k := CompactHexDecode(key.Str())
k := CompactHexDecode(string(key))
if len(value) != 0 {
self.root = self.insert(self.root, k, &ValueNode{self, value})
@ -132,12 +125,12 @@ func (self *Trie) Update(key common.Hash, value []byte) Node {
return self.root
}
func (self *Trie) GetString(key string) []byte { return self.Get(common.StringToHash(key)) }
func (self *Trie) Get(key common.Hash) []byte {
func (self *Trie) GetString(key string) []byte { return self.Get([]byte(key)) }
func (self *Trie) Get(key []byte) []byte {
self.mu.Lock()
defer self.mu.Unlock()
k := CompactHexDecode(key.Str())
k := CompactHexDecode(string(key))
n := self.get(self.root, k)
if n != nil {
@ -147,12 +140,12 @@ func (self *Trie) Get(key common.Hash) []byte {
return nil
}
func (self *Trie) DeleteString(key string) Node { return self.Delete(common.StringToHash(key)) }
func (self *Trie) Delete(key common.Hash) Node {
func (self *Trie) DeleteString(key string) Node { return self.Delete([]byte(key)) }
func (self *Trie) Delete(key []byte) Node {
self.mu.Lock()
defer self.mu.Unlock()
k := CompactHexDecode(key.Str())
k := CompactHexDecode(string(key))
self.root = self.delete(self.root, k)
return self.root

51
trie/trie_test.go
View File

@ -5,8 +5,8 @@ import (
"fmt"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/common"
)
type Db map[string][]byte
@ -16,18 +16,18 @@ func (self Db) Put(k, v []byte) { self[string(k)] = v }
// Used for testing
func NewEmpty() *Trie {
return New(common.Hash{}, make(Db))
return New(nil, make(Db))
}
func NewEmptySecure() *SecureTrie {
return NewSecure(common.Hash{}, make(Db))
return NewSecure(nil, make(Db))
}
func TestEmptyTrie(t *testing.T) {
trie := NewEmpty()
res := trie.Hash()
exp := crypto.Sha3(common.Encode(""))
if !bytes.Equal(res[:], exp[:]) {
if !bytes.Equal(res, exp) {
t.Errorf("expected %x got %x", exp, res)
}
}
@ -41,7 +41,7 @@ func TestInsert(t *testing.T) {
exp := common.Hex2Bytes("8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3")
root := trie.Hash()
if !bytes.Equal(root[:], exp[:]) {
if !bytes.Equal(root, exp) {
t.Errorf("exp %x got %x", exp, root)
}
@ -50,7 +50,7 @@ func TestInsert(t *testing.T) {
exp = common.Hex2Bytes("d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab")
root = trie.Hash()
if !bytes.Equal(root[:], exp) {
if !bytes.Equal(root, exp) {
t.Errorf("exp %x got %x", exp, root)
}
}
@ -96,7 +96,7 @@ func TestDelete(t *testing.T) {
hash := trie.Hash()
exp := common.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if !bytes.Equal(hash[:], exp) {
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
}
@ -120,7 +120,7 @@ func TestEmptyValues(t *testing.T) {
hash := trie.Hash()
exp := common.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if !bytes.Equal(hash[:], exp) {
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
}
@ -150,7 +150,7 @@ func TestReplication(t *testing.T) {
hash := trie2.Hash()
exp := trie.Hash()
if !bytes.Equal(hash[:], exp[:]) {
if !bytes.Equal(hash, exp) {
t.Errorf("root failure. expected %x got %x", exp, hash)
}
@ -168,9 +168,7 @@ func TestReset(t *testing.T) {
}
trie.Commit()
var before common.Hash
before.Set(trie.roothash)
before := common.CopyBytes(trie.roothash)
trie.UpdateString("should", "revert")
trie.Hash()
// Should have no effect
@ -179,11 +177,9 @@ func TestReset(t *testing.T) {
// ###
trie.Reset()
after := common.CopyBytes(trie.roothash)
var after common.Hash
after.Set(trie.roothash)
if before != after {
if !bytes.Equal(before, after) {
t.Errorf("expected roots to be equal. %x - %x", before, after)
}
}
@ -252,7 +248,7 @@ func BenchmarkGets(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
trie.GetString("horse")
trie.Get([]byte("horse"))
}
}
@ -267,9 +263,8 @@ func BenchmarkUpdate(b *testing.B) {
}
type kv struct {
k common.Hash
v []byte
t bool
k, v []byte
t bool
}
func TestLargeData(t *testing.T) {
@ -277,21 +272,17 @@ func TestLargeData(t *testing.T) {
vals := make(map[string]*kv)
for i := byte(0); i < 255; i++ {
var k1 common.Hash
k1.SetBytes([]byte{i})
var k2 common.Hash
k2.SetBytes([]byte{10, i})
value := &kv{k1, []byte{i}, false}
value2 := &kv{k2, []byte{i}, false}
value := &kv{common.LeftPadBytes([]byte{i}, 32), []byte{i}, false}
value2 := &kv{common.LeftPadBytes([]byte{10, i}, 32), []byte{i}, false}
trie.Update(value.k, value.v)
trie.Update(value2.k, value2.v)
vals[value.k.Str()] = value
vals[value2.k.Str()] = value2
vals[string(value.k)] = value
vals[string(value2.k)] = value2
}
it := trie.Iterator()
for it.Next() {
vals[it.Key.Str()].t = true
vals[string(it.Key)].t = true
}
var untouched []*kv
@ -332,7 +323,7 @@ func TestSecureDelete(t *testing.T) {
hash := trie.Hash()
exp := common.Hex2Bytes("29b235a58c3c25ab83010c327d5932bcf05324b7d6b1185e650798034783ca9d")
if !bytes.Equal(hash[:], exp) {
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
}