bc42e88415
This change improves GenerateChain to support internal chain history access (ChainReader) for the consensus engine and EVM. GenerateChain takes a `parent` block and the number of blocks to create. With my changes, the consensus engine and EVM can now access blocks from `parent` up to the block currently being generated. This is required to make the BLOCKHASH instruction work, and also needed to create real clique chains. Clique uses chain history to figure out if the current signer is in-turn, for example. I've also added some more accessors to BlockGen. These are helpful when creating transactions: - g.Signer returns a signer instance for the current block - g.Difficulty returns the current block difficulty - g.Gas returns the remaining gas amount Another fix in this commit concerns the receipts returned by GenerateChain. The receipts now have properly derived fields (BlockHash, etc.) and should generally match what would be returned by the RPC API.
261 lines
9.1 KiB
Go
261 lines
9.1 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 core
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import (
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"fmt"
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"math/big"
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"reflect"
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"testing"
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"github.com/davecgh/go-spew/spew"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus/beacon"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/trie"
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)
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func TestGeneratePOSChain(t *testing.T) {
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var (
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keyHex = "9c647b8b7c4e7c3490668fb6c11473619db80c93704c70893d3813af4090c39c"
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key, _ = crypto.HexToECDSA(keyHex)
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address = crypto.PubkeyToAddress(key.PublicKey) // 658bdf435d810c91414ec09147daa6db62406379
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aa = common.Address{0xaa}
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bb = common.Address{0xbb}
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funds = big.NewInt(0).Mul(big.NewInt(1337), big.NewInt(params.Ether))
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config = *params.AllEthashProtocolChanges
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asm4788 = common.Hex2Bytes("3373fffffffffffffffffffffffffffffffffffffffe14604d57602036146024575f5ffd5b5f35801560495762001fff810690815414603c575f5ffd5b62001fff01545f5260205ff35b5f5ffd5b62001fff42064281555f359062001fff015500")
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gspec = &Genesis{
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Config: &config,
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Alloc: GenesisAlloc{
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address: {Balance: funds},
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params.BeaconRootsStorageAddress: {Balance: common.Big0, Code: asm4788},
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},
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BaseFee: big.NewInt(params.InitialBaseFee),
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Difficulty: common.Big1,
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GasLimit: 5_000_000,
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}
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gendb = rawdb.NewMemoryDatabase()
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db = rawdb.NewMemoryDatabase()
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)
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config.TerminalTotalDifficultyPassed = true
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config.TerminalTotalDifficulty = common.Big0
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config.ShanghaiTime = u64(0)
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config.CancunTime = u64(0)
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// init 0xaa with some storage elements
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storage := make(map[common.Hash]common.Hash)
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storage[common.Hash{0x00}] = common.Hash{0x00}
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storage[common.Hash{0x01}] = common.Hash{0x01}
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storage[common.Hash{0x02}] = common.Hash{0x02}
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storage[common.Hash{0x03}] = common.HexToHash("0303")
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gspec.Alloc[aa] = GenesisAccount{
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Balance: common.Big1,
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Nonce: 1,
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Storage: storage,
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Code: common.Hex2Bytes("6042"),
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}
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gspec.Alloc[bb] = GenesisAccount{
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Balance: common.Big2,
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Nonce: 1,
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Storage: storage,
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Code: common.Hex2Bytes("600154600354"),
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}
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genesis := gspec.MustCommit(gendb, trie.NewDatabase(gendb, trie.HashDefaults))
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genchain, genreceipts := GenerateChain(gspec.Config, genesis, beacon.NewFaker(), gendb, 4, func(i int, gen *BlockGen) {
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gen.SetParentBeaconRoot(common.Hash{byte(i + 1)})
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// Add value transfer tx.
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tx := types.MustSignNewTx(key, gen.Signer(), &types.LegacyTx{
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Nonce: gen.TxNonce(address),
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To: &address,
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Value: big.NewInt(1000),
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Gas: params.TxGas,
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GasPrice: new(big.Int).Add(gen.BaseFee(), common.Big1),
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})
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gen.AddTx(tx)
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// Add withdrawals.
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if i == 1 {
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gen.AddWithdrawal(&types.Withdrawal{
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Validator: 42,
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Address: common.Address{0xee},
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Amount: 1337,
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})
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gen.AddWithdrawal(&types.Withdrawal{
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Validator: 13,
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Address: common.Address{0xee},
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Amount: 1,
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})
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}
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if i == 3 {
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gen.AddWithdrawal(&types.Withdrawal{
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Validator: 42,
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Address: common.Address{0xee},
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Amount: 1337,
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})
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gen.AddWithdrawal(&types.Withdrawal{
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Validator: 13,
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Address: common.Address{0xee},
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Amount: 1,
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})
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}
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})
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// Import the chain. This runs all block validation rules.
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blockchain, _ := NewBlockChain(db, nil, gspec, nil, beacon.NewFaker(), vm.Config{}, nil, nil)
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defer blockchain.Stop()
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if i, err := blockchain.InsertChain(genchain); err != nil {
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t.Fatalf("insert error (block %d): %v\n", genchain[i].NumberU64(), err)
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}
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// enforce that withdrawal indexes are monotonically increasing from 0
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var (
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withdrawalIndex uint64
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)
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for i := range genchain {
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blocknum := genchain[i].NumberU64()
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block := blockchain.GetBlockByNumber(blocknum)
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if block == nil {
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t.Fatalf("block %d not found", blocknum)
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}
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// Verify receipts.
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genBlockReceipts := genreceipts[i]
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for _, r := range genBlockReceipts {
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if r.BlockNumber.Cmp(block.Number()) != 0 {
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t.Errorf("receipt has wrong block number %d, want %d", r.BlockNumber, block.Number())
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}
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if r.BlockHash != block.Hash() {
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t.Errorf("receipt has wrong block hash %v, want %v", r.BlockHash, block.Hash())
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}
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// patch up empty logs list to make DeepEqual below work
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if r.Logs == nil {
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r.Logs = []*types.Log{}
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}
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}
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blockchainReceipts := blockchain.GetReceiptsByHash(block.Hash())
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if !reflect.DeepEqual(genBlockReceipts, blockchainReceipts) {
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t.Fatalf("receipts mismatch\ngenerated: %s\nblockchain: %s", spew.Sdump(genBlockReceipts), spew.Sdump(blockchainReceipts))
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}
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// Verify withdrawals.
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if len(block.Withdrawals()) == 0 {
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continue
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}
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for j := 0; j < len(block.Withdrawals()); j++ {
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if block.Withdrawals()[j].Index != withdrawalIndex {
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t.Fatalf("withdrawal index %d does not equal expected index %d", block.Withdrawals()[j].Index, withdrawalIndex)
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}
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withdrawalIndex += 1
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}
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// Verify parent beacon root.
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want := common.Hash{byte(blocknum)}
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if got := block.BeaconRoot(); *got != want {
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t.Fatalf("block %d, wrong parent beacon root: got %s, want %s", i, got, want)
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}
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state, _ := blockchain.State()
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idx := block.Time()%8191 + 8191
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got := state.GetState(params.BeaconRootsStorageAddress, common.BigToHash(new(big.Int).SetUint64(idx)))
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if got != want {
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t.Fatalf("block %d, wrong parent beacon root in state: got %s, want %s", i, got, want)
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}
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}
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}
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func ExampleGenerateChain() {
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var (
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key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
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key3, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
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addr1 = crypto.PubkeyToAddress(key1.PublicKey)
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addr2 = crypto.PubkeyToAddress(key2.PublicKey)
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addr3 = crypto.PubkeyToAddress(key3.PublicKey)
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db = rawdb.NewMemoryDatabase()
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genDb = rawdb.NewMemoryDatabase()
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)
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// Ensure that key1 has some funds in the genesis block.
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gspec := &Genesis{
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Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)},
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Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(1000000)}},
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}
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genesis := gspec.MustCommit(genDb, trie.NewDatabase(genDb, trie.HashDefaults))
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// This call generates a chain of 5 blocks. The function runs for
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// each block and adds different features to gen based on the
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// block index.
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signer := types.HomesteadSigner{}
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chain, _ := GenerateChain(gspec.Config, genesis, ethash.NewFaker(), genDb, 5, func(i int, gen *BlockGen) {
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switch i {
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case 0:
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// In block 1, addr1 sends addr2 some ether.
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tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1)
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gen.AddTx(tx)
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case 1:
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// In block 2, addr1 sends some more ether to addr2.
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// addr2 passes it on to addr3.
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tx1, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(1000), params.TxGas, nil, nil), signer, key1)
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tx2, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr3, big.NewInt(1000), params.TxGas, nil, nil), signer, key2)
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gen.AddTx(tx1)
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gen.AddTx(tx2)
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case 2:
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// Block 3 is empty but was mined by addr3.
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gen.SetCoinbase(addr3)
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gen.SetExtra([]byte("yeehaw"))
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case 3:
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// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
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b2 := gen.PrevBlock(1).Header()
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b2.Extra = []byte("foo")
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gen.AddUncle(b2)
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b3 := gen.PrevBlock(2).Header()
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b3.Extra = []byte("foo")
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gen.AddUncle(b3)
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}
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})
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// Import the chain. This runs all block validation rules.
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blockchain, _ := NewBlockChain(db, DefaultCacheConfigWithScheme(rawdb.HashScheme), gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
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defer blockchain.Stop()
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if i, err := blockchain.InsertChain(chain); err != nil {
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fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
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return
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}
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state, _ := blockchain.State()
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fmt.Printf("last block: #%d\n", blockchain.CurrentBlock().Number)
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fmt.Println("balance of addr1:", state.GetBalance(addr1))
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fmt.Println("balance of addr2:", state.GetBalance(addr2))
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fmt.Println("balance of addr3:", state.GetBalance(addr3))
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// Output:
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// last block: #5
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// balance of addr1: 989000
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// balance of addr2: 10000
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// balance of addr3: 19687500000000001000
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}
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