forked from cerc-io/plugeth
1f1ea18b54
This commit replaces the deep-copy based state revert mechanism with a linear complexity journal. This commit also hides several internal StateDB methods to limit the number of ways in which calling code can use the journal incorrectly. As usual consultation and bug fixes to the initial implementation were provided by @karalabe, @obscuren and @Arachnid. Thank you!
263 lines
7.1 KiB
Go
263 lines
7.1 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package light
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import (
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"bytes"
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/trie"
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"golang.org/x/net/context"
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)
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type testOdr struct {
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OdrBackend
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sdb, ldb ethdb.Database
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}
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func (odr *testOdr) Database() ethdb.Database {
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return odr.ldb
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}
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func (odr *testOdr) Retrieve(ctx context.Context, req OdrRequest) error {
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switch req := req.(type) {
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case *TrieRequest:
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t, _ := trie.New(req.root, odr.sdb)
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req.proof = t.Prove(req.key)
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case *NodeDataRequest:
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req.data, _ = odr.sdb.Get(req.hash[:])
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}
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req.StoreResult(odr.ldb)
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return nil
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}
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func makeTestState() (common.Hash, ethdb.Database) {
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sdb, _ := ethdb.NewMemDatabase()
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st, _ := state.New(common.Hash{}, sdb)
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for i := byte(0); i < 100; i++ {
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addr := common.Address{i}
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for j := byte(0); j < 100; j++ {
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st.SetState(addr, common.Hash{j}, common.Hash{i, j})
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}
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st.SetNonce(addr, 100)
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st.AddBalance(addr, big.NewInt(int64(i)))
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st.SetCode(addr, []byte{i, i, i})
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}
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root, _ := st.Commit()
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return root, sdb
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}
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func TestLightStateOdr(t *testing.T) {
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root, sdb := makeTestState()
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ldb, _ := ethdb.NewMemDatabase()
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odr := &testOdr{sdb: sdb, ldb: ldb}
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ls := NewLightState(root, odr)
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ctx := context.Background()
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for i := byte(0); i < 100; i++ {
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addr := common.Address{i}
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err := ls.AddBalance(ctx, addr, big.NewInt(1000))
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if err != nil {
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t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
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}
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err = ls.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 100})
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if err != nil {
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t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
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}
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}
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addr := common.Address{100}
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_, err := ls.CreateStateObject(ctx, addr)
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if err != nil {
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t.Fatalf("Error creating state object: %v", err)
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}
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err = ls.SetCode(ctx, addr, []byte{100, 100, 100})
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if err != nil {
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t.Fatalf("Error setting code: %v", err)
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}
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err = ls.AddBalance(ctx, addr, big.NewInt(1100))
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if err != nil {
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t.Fatalf("Error adding balance to acc[100]: %v", err)
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}
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for j := byte(0); j < 101; j++ {
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err = ls.SetState(ctx, addr, common.Hash{j}, common.Hash{100, j})
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if err != nil {
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t.Fatalf("Error setting storage of acc[100]: %v", err)
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}
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}
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err = ls.SetNonce(ctx, addr, 100)
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if err != nil {
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t.Fatalf("Error setting nonce for acc[100]: %v", err)
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}
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for i := byte(0); i < 101; i++ {
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addr := common.Address{i}
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bal, err := ls.GetBalance(ctx, addr)
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if err != nil {
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t.Fatalf("Error getting balance of acc[%d]: %v", i, err)
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}
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if bal.Int64() != int64(i)+1000 {
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t.Fatalf("Incorrect balance at acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
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}
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nonce, err := ls.GetNonce(ctx, addr)
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if err != nil {
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t.Fatalf("Error getting nonce of acc[%d]: %v", i, err)
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}
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if nonce != 100 {
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t.Fatalf("Incorrect nonce at acc[%d]: expected %v, got %v", i, 100, nonce)
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}
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code, err := ls.GetCode(ctx, addr)
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exp := []byte{i, i, i}
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if err != nil {
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t.Fatalf("Error getting code of acc[%d]: %v", i, err)
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}
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if !bytes.Equal(code, exp) {
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t.Fatalf("Incorrect code at acc[%d]: expected %v, got %v", i, exp, code)
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}
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for j := byte(0); j < 101; j++ {
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exp := common.Hash{i, j}
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val, err := ls.GetState(ctx, addr, common.Hash{j})
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if err != nil {
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t.Fatalf("Error retrieving acc[%d].storage[%d]: %v", i, j, err)
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}
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if val != exp {
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t.Fatalf("Retrieved wrong value from acc[%d].storage[%d]: expected %04x, got %04x", i, j, exp, val)
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}
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}
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}
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}
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func TestLightStateSetCopy(t *testing.T) {
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root, sdb := makeTestState()
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ldb, _ := ethdb.NewMemDatabase()
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odr := &testOdr{sdb: sdb, ldb: ldb}
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ls := NewLightState(root, odr)
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ctx := context.Background()
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for i := byte(0); i < 100; i++ {
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addr := common.Address{i}
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err := ls.AddBalance(ctx, addr, big.NewInt(1000))
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if err != nil {
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t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
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}
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err = ls.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 100})
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if err != nil {
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t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
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}
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}
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ls2 := ls.Copy()
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for i := byte(0); i < 100; i++ {
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addr := common.Address{i}
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err := ls2.AddBalance(ctx, addr, big.NewInt(1000))
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if err != nil {
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t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
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}
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err = ls2.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 200})
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if err != nil {
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t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
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}
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}
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lsx := ls.Copy()
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ls.Set(ls2)
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ls2.Set(lsx)
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for i := byte(0); i < 100; i++ {
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addr := common.Address{i}
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// check balance in ls
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bal, err := ls.GetBalance(ctx, addr)
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if err != nil {
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t.Fatalf("Error getting balance to acc[%d]: %v", i, err)
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}
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if bal.Int64() != int64(i)+2000 {
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t.Fatalf("Incorrect balance at ls.acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
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}
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// check balance in ls2
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bal, err = ls2.GetBalance(ctx, addr)
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if err != nil {
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t.Fatalf("Error getting balance to acc[%d]: %v", i, err)
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}
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if bal.Int64() != int64(i)+1000 {
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t.Fatalf("Incorrect balance at ls.acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
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}
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// check storage in ls
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exp := common.Hash{i, 200}
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val, err := ls.GetState(ctx, addr, common.Hash{100})
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if err != nil {
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t.Fatalf("Error retrieving acc[%d].storage[100]: %v", i, err)
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}
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if val != exp {
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t.Fatalf("Retrieved wrong value from acc[%d].storage[100]: expected %04x, got %04x", i, exp, val)
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}
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// check storage in ls2
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exp = common.Hash{i, 100}
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val, err = ls2.GetState(ctx, addr, common.Hash{100})
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if err != nil {
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t.Fatalf("Error retrieving acc[%d].storage[100]: %v", i, err)
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}
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if val != exp {
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t.Fatalf("Retrieved wrong value from acc[%d].storage[100]: expected %04x, got %04x", i, exp, val)
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}
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}
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}
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func TestLightStateDelete(t *testing.T) {
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root, sdb := makeTestState()
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ldb, _ := ethdb.NewMemDatabase()
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odr := &testOdr{sdb: sdb, ldb: ldb}
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ls := NewLightState(root, odr)
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ctx := context.Background()
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addr := common.Address{42}
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b, err := ls.HasAccount(ctx, addr)
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if err != nil {
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t.Fatalf("HasAccount error: %v", err)
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}
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if !b {
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t.Fatalf("HasAccount returned false, expected true")
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}
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b, err = ls.IsDeleted(ctx, addr)
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if err != nil {
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t.Fatalf("IsDeleted error: %v", err)
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}
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if b {
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t.Fatalf("IsDeleted returned true, expected false")
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}
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ls.Delete(ctx, addr)
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b, err = ls.IsDeleted(ctx, addr)
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if err != nil {
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t.Fatalf("IsDeleted error: %v", err)
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}
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if !b {
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t.Fatalf("IsDeleted returned false, expected true")
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}
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}
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