623b17ba20
This pull request introduces a state.Reader interface for state accessing. The interface could be implemented in various ways. It can be pure trie only reader, or the combination of trie and state snapshot. What's more, this interface allows us to have more flexibility in the future, e.g. the archive reader (for accessing archive state). Additionally, this pull request removes the following metrics - `chain/snapshot/account/reads` - `chain/snapshot/storage/reads`
112 lines
4.0 KiB
Go
112 lines
4.0 KiB
Go
// Copyright 2021 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 state
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import (
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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/rawdb"
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"github.com/ethereum/go-ethereum/core/tracing"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/internal/testrand"
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"github.com/ethereum/go-ethereum/triedb"
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"github.com/holiman/uint256"
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)
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func filledStateDB() *StateDB {
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state, _ := New(types.EmptyRootHash, NewDatabaseForTesting())
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// Create an account and check if the retrieved balance is correct
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addr := common.HexToAddress("0xaffeaffeaffeaffeaffeaffeaffeaffeaffeaffe")
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skey := common.HexToHash("aaa")
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sval := common.HexToHash("bbb")
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state.SetBalance(addr, uint256.NewInt(42), tracing.BalanceChangeUnspecified) // Change the account trie
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state.SetCode(addr, []byte("hello")) // Change an external metadata
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state.SetState(addr, skey, sval) // Change the storage trie
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for i := 0; i < 100; i++ {
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sk := common.BigToHash(big.NewInt(int64(i)))
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state.SetState(addr, sk, sk) // Change the storage trie
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}
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return state
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}
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func TestUseAfterTerminate(t *testing.T) {
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db := filledStateDB()
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prefetcher := newTriePrefetcher(db.db, db.originalRoot, "", true)
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skey := common.HexToHash("aaa")
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if err := prefetcher.prefetch(common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()}, false); err != nil {
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t.Errorf("Prefetch failed before terminate: %v", err)
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}
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prefetcher.terminate(false)
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if err := prefetcher.prefetch(common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()}, false); err == nil {
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t.Errorf("Prefetch succeeded after terminate: %v", err)
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}
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if tr := prefetcher.trie(common.Hash{}, db.originalRoot); tr == nil {
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t.Errorf("Prefetcher returned nil trie after terminate")
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}
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}
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func TestVerklePrefetcher(t *testing.T) {
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disk := rawdb.NewMemoryDatabase()
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db := triedb.NewDatabase(disk, triedb.VerkleDefaults)
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sdb := NewDatabase(db, nil)
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state, err := New(types.EmptyRootHash, sdb)
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if err != nil {
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t.Fatalf("failed to initialize state: %v", err)
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}
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// Create an account and check if the retrieved balance is correct
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addr := testrand.Address()
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skey := testrand.Hash()
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sval := testrand.Hash()
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state.SetBalance(addr, uint256.NewInt(42), tracing.BalanceChangeUnspecified) // Change the account trie
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state.SetCode(addr, []byte("hello")) // Change an external metadata
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state.SetState(addr, skey, sval) // Change the storage trie
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root, _ := state.Commit(0, true)
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state, _ = New(root, sdb)
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sRoot := state.GetStorageRoot(addr)
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fetcher := newTriePrefetcher(sdb, root, "", false)
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// Read account
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fetcher.prefetch(common.Hash{}, root, common.Address{}, [][]byte{
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addr.Bytes(),
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}, false)
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// Read storage slot
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fetcher.prefetch(crypto.Keccak256Hash(addr.Bytes()), sRoot, addr, [][]byte{
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skey.Bytes(),
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}, false)
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fetcher.terminate(false)
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accountTrie := fetcher.trie(common.Hash{}, root)
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storageTrie := fetcher.trie(crypto.Keccak256Hash(addr.Bytes()), sRoot)
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rootA := accountTrie.Hash()
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rootB := storageTrie.Hash()
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if rootA != rootB {
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t.Fatal("Two different tries are retrieved")
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}
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}
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