eaa4473dbd
Added a `Difference` method to `types.Transactions` which sets the receiver to the difference of a to b (NOTE: not a **and** b). Transaction pool subscribes to RemovedTransactionEvent adding back to those potential missing from the chain. When a chain re-org occurs remove any transactions that were removed from the canonical chain during the re-org as well as the receipts that were generated in the process. Closes #1746
600 lines
18 KiB
Go
600 lines
18 KiB
Go
// Copyright 2014 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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"math/rand"
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"testing"
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"github.com/ethereum/ethash"
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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/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/pow"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/hashicorp/golang-lru"
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)
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func init() {
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runtime.GOMAXPROCS(runtime.NumCPU())
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}
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func thePow() pow.PoW {
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pow, _ := ethash.NewForTesting()
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return pow
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}
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func theChainManager(db ethdb.Database, t *testing.T) *ChainManager {
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var eventMux event.TypeMux
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WriteTestNetGenesisBlock(db, 0)
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chainMan, err := NewChainManager(db, thePow(), &eventMux)
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if err != nil {
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t.Error("failed creating chainmanager:", err)
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t.FailNow()
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return nil
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}
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blockMan := NewBlockProcessor(db, nil, chainMan, &eventMux)
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chainMan.SetProcessor(blockMan)
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return chainMan
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}
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// Test fork of length N starting from block i
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func testFork(t *testing.T, bman *BlockProcessor, i, N int, f func(td1, td2 *big.Int)) {
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// switch databases to process the new chain
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db, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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// copy old chain up to i into new db with deterministic canonical
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bman2, err := newCanonical(i, db)
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if err != nil {
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t.Fatal("could not make new canonical in testFork", err)
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}
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// asert the bmans have the same block at i
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bi1 := bman.bc.GetBlockByNumber(uint64(i)).Hash()
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bi2 := bman2.bc.GetBlockByNumber(uint64(i)).Hash()
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if bi1 != bi2 {
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fmt.Printf("%+v\n%+v\n\n", bi1, bi2)
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t.Fatal("chains do not have the same hash at height", i)
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}
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bman2.bc.SetProcessor(bman2)
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// extend the fork
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parent := bman2.bc.CurrentBlock()
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chainB := makeChain(parent, N, db, forkSeed)
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_, err = bman2.bc.InsertChain(chainB)
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if err != nil {
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t.Fatal("Insert chain error for fork:", err)
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}
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tdpre := bman.bc.Td()
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// Test the fork's blocks on the original chain
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td, err := testChain(chainB, bman)
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if err != nil {
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t.Fatal("expected chainB not to give errors:", err)
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}
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// Compare difficulties
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f(tdpre, td)
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// Loop over parents making sure reconstruction is done properly
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}
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func printChain(bc *ChainManager) {
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for i := bc.CurrentBlock().Number().Uint64(); i > 0; i-- {
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b := bc.GetBlockByNumber(uint64(i))
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fmt.Printf("\t%x %v\n", b.Hash(), b.Difficulty())
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}
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}
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// process blocks against a chain
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func testChain(chainB types.Blocks, bman *BlockProcessor) (*big.Int, error) {
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for _, block := range chainB {
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_, _, err := bman.bc.processor.Process(block)
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if err != nil {
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if IsKnownBlockErr(err) {
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continue
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}
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return nil, err
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}
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bman.bc.mu.Lock()
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WriteTd(bman.bc.chainDb, block.Hash(), new(big.Int).Add(block.Difficulty(), bman.bc.GetTd(block.ParentHash())))
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WriteBlock(bman.bc.chainDb, block)
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bman.bc.mu.Unlock()
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}
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return bman.bc.GetTd(chainB[len(chainB)-1].Hash()), nil
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}
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func loadChain(fn string, t *testing.T) (types.Blocks, error) {
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fh, err := os.OpenFile(filepath.Join("..", "_data", fn), os.O_RDONLY, os.ModePerm)
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if err != nil {
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return nil, err
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}
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defer fh.Close()
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var chain types.Blocks
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if err := rlp.Decode(fh, &chain); err != nil {
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return nil, err
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}
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return chain, nil
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}
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func insertChain(done chan bool, chainMan *ChainManager, chain types.Blocks, t *testing.T) {
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_, err := chainMan.InsertChain(chain)
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if err != nil {
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fmt.Println(err)
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t.FailNow()
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}
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done <- true
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}
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func TestExtendCanonical(t *testing.T) {
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CanonicalLength := 5
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db, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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// make first chain starting from genesis
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bman, err := newCanonical(CanonicalLength, db)
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if err != nil {
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t.Fatal("Could not make new canonical chain:", err)
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}
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f := func(td1, td2 *big.Int) {
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if td2.Cmp(td1) <= 0 {
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t.Error("expected chainB to have higher difficulty. Got", td2, "expected more than", td1)
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}
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}
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// Start fork from current height (CanonicalLength)
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testFork(t, bman, CanonicalLength, 1, f)
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testFork(t, bman, CanonicalLength, 2, f)
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testFork(t, bman, CanonicalLength, 5, f)
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testFork(t, bman, CanonicalLength, 10, f)
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}
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func TestShorterFork(t *testing.T) {
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db, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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// make first chain starting from genesis
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bman, err := newCanonical(10, db)
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if err != nil {
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t.Fatal("Could not make new canonical chain:", err)
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}
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f := func(td1, td2 *big.Int) {
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if td2.Cmp(td1) >= 0 {
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t.Error("expected chainB to have lower difficulty. Got", td2, "expected less than", td1)
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}
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}
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// Sum of numbers must be less than 10
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// for this to be a shorter fork
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testFork(t, bman, 0, 3, f)
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testFork(t, bman, 0, 7, f)
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testFork(t, bman, 1, 1, f)
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testFork(t, bman, 1, 7, f)
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testFork(t, bman, 5, 3, f)
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testFork(t, bman, 5, 4, f)
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}
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func TestLongerFork(t *testing.T) {
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db, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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// make first chain starting from genesis
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bman, err := newCanonical(10, db)
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if err != nil {
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t.Fatal("Could not make new canonical chain:", err)
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}
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f := func(td1, td2 *big.Int) {
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if td2.Cmp(td1) <= 0 {
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t.Error("expected chainB to have higher difficulty. Got", td2, "expected more than", td1)
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}
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}
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// Sum of numbers must be greater than 10
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// for this to be a longer fork
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testFork(t, bman, 0, 11, f)
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testFork(t, bman, 0, 15, f)
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testFork(t, bman, 1, 10, f)
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testFork(t, bman, 1, 12, f)
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testFork(t, bman, 5, 6, f)
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testFork(t, bman, 5, 8, f)
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}
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func TestEqualFork(t *testing.T) {
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db, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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bman, err := newCanonical(10, db)
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if err != nil {
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t.Fatal("Could not make new canonical chain:", err)
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}
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f := func(td1, td2 *big.Int) {
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if td2.Cmp(td1) != 0 {
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t.Error("expected chainB to have equal difficulty. Got", td2, "expected ", td1)
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}
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}
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// Sum of numbers must be equal to 10
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// for this to be an equal fork
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testFork(t, bman, 0, 10, f)
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testFork(t, bman, 1, 9, f)
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testFork(t, bman, 2, 8, f)
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testFork(t, bman, 5, 5, f)
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testFork(t, bman, 6, 4, f)
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testFork(t, bman, 9, 1, f)
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}
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func TestBrokenChain(t *testing.T) {
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db, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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bman, err := newCanonical(10, db)
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if err != nil {
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t.Fatal("Could not make new canonical chain:", err)
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}
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db2, err := ethdb.NewMemDatabase()
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if err != nil {
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t.Fatal("Failed to create db:", err)
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}
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bman2, err := newCanonical(10, db2)
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if err != nil {
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t.Fatal("Could not make new canonical chain:", err)
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}
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bman2.bc.SetProcessor(bman2)
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parent := bman2.bc.CurrentBlock()
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chainB := makeChain(parent, 5, db2, forkSeed)
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chainB = chainB[1:]
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_, err = testChain(chainB, bman)
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if err == nil {
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t.Error("expected broken chain to return error")
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}
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}
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func TestChainInsertions(t *testing.T) {
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t.Skip("Skipped: outdated test files")
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db, _ := ethdb.NewMemDatabase()
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chain1, err := loadChain("valid1", t)
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if err != nil {
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fmt.Println(err)
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t.FailNow()
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}
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chain2, err := loadChain("valid2", t)
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if err != nil {
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fmt.Println(err)
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t.FailNow()
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}
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chainMan := theChainManager(db, t)
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const max = 2
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done := make(chan bool, max)
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go insertChain(done, chainMan, chain1, t)
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go insertChain(done, chainMan, chain2, t)
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for i := 0; i < max; i++ {
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<-done
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}
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if chain2[len(chain2)-1].Hash() != chainMan.CurrentBlock().Hash() {
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t.Error("chain2 is canonical and shouldn't be")
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}
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if chain1[len(chain1)-1].Hash() != chainMan.CurrentBlock().Hash() {
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t.Error("chain1 isn't canonical and should be")
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}
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}
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func TestChainMultipleInsertions(t *testing.T) {
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t.Skip("Skipped: outdated test files")
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db, _ := ethdb.NewMemDatabase()
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const max = 4
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chains := make([]types.Blocks, max)
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var longest int
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for i := 0; i < max; i++ {
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var err error
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name := "valid" + strconv.Itoa(i+1)
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chains[i], err = loadChain(name, t)
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if len(chains[i]) >= len(chains[longest]) {
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longest = i
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}
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fmt.Println("loaded", name, "with a length of", len(chains[i]))
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if err != nil {
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fmt.Println(err)
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t.FailNow()
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}
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}
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chainMan := theChainManager(db, t)
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done := make(chan bool, max)
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for i, chain := range chains {
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// XXX the go routine would otherwise reference the same (chain[3]) variable and fail
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i := i
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chain := chain
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go func() {
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insertChain(done, chainMan, chain, t)
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fmt.Println(i, "done")
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}()
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}
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for i := 0; i < max; i++ {
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<-done
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}
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if chains[longest][len(chains[longest])-1].Hash() != chainMan.CurrentBlock().Hash() {
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t.Error("Invalid canonical chain")
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}
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}
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type bproc struct{}
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func (bproc) Process(*types.Block) (state.Logs, types.Receipts, error) { return nil, nil, nil }
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func makeChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block {
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var chain []*types.Block
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for i, difficulty := range d {
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header := &types.Header{
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Coinbase: common.Address{seed},
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Number: big.NewInt(int64(i + 1)),
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Difficulty: big.NewInt(int64(difficulty)),
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}
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if i == 0 {
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header.ParentHash = genesis.Hash()
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} else {
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header.ParentHash = chain[i-1].Hash()
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}
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block := types.NewBlockWithHeader(header)
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chain = append(chain, block)
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}
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return chain
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}
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func chm(genesis *types.Block, db ethdb.Database) *ChainManager {
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var eventMux event.TypeMux
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bc := &ChainManager{chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: FakePow{}}
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bc.headerCache, _ = lru.New(100)
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bc.bodyCache, _ = lru.New(100)
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bc.bodyRLPCache, _ = lru.New(100)
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bc.tdCache, _ = lru.New(100)
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bc.blockCache, _ = lru.New(100)
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bc.futureBlocks, _ = lru.New(100)
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bc.processor = bproc{}
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bc.ResetWithGenesisBlock(genesis)
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return bc
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}
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func TestReorgLongest(t *testing.T) {
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db, _ := ethdb.NewMemDatabase()
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genesis, err := WriteTestNetGenesisBlock(db, 0)
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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bc := chm(genesis, db)
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chain1 := makeChainWithDiff(genesis, []int{1, 2, 4}, 10)
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chain2 := makeChainWithDiff(genesis, []int{1, 2, 3, 4}, 11)
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bc.InsertChain(chain1)
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bc.InsertChain(chain2)
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prev := bc.CurrentBlock()
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for block := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, bc.GetBlockByNumber(block.NumberU64()-1) {
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if prev.ParentHash() != block.Hash() {
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t.Errorf("parent hash mismatch %x - %x", prev.ParentHash(), block.Hash())
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}
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}
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}
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func TestReorgShortest(t *testing.T) {
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db, _ := ethdb.NewMemDatabase()
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genesis, err := WriteTestNetGenesisBlock(db, 0)
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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bc := chm(genesis, db)
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chain1 := makeChainWithDiff(genesis, []int{1, 2, 3, 4}, 10)
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chain2 := makeChainWithDiff(genesis, []int{1, 10}, 11)
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bc.InsertChain(chain1)
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bc.InsertChain(chain2)
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prev := bc.CurrentBlock()
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for block := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, bc.GetBlockByNumber(block.NumberU64()-1) {
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if prev.ParentHash() != block.Hash() {
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t.Errorf("parent hash mismatch %x - %x", prev.ParentHash(), block.Hash())
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}
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}
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}
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func TestInsertNonceError(t *testing.T) {
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for i := 1; i < 25 && !t.Failed(); i++ {
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db, _ := ethdb.NewMemDatabase()
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genesis, err := WriteTestNetGenesisBlock(db, 0)
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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bc := chm(genesis, db)
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bc.processor = NewBlockProcessor(db, bc.pow, bc, bc.eventMux)
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blocks := makeChain(bc.currentBlock, i, db, 0)
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fail := rand.Int() % len(blocks)
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failblock := blocks[fail]
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bc.pow = failPow{failblock.NumberU64()}
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n, err := bc.InsertChain(blocks)
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// Check that the returned error indicates the nonce failure.
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if n != fail {
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t.Errorf("(i=%d) wrong failed block index: got %d, want %d", i, n, fail)
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}
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if !IsBlockNonceErr(err) {
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t.Fatalf("(i=%d) got %q, want a nonce error", i, err)
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}
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nerr := err.(*BlockNonceErr)
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if nerr.Number.Cmp(failblock.Number()) != 0 {
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t.Errorf("(i=%d) wrong block number in error, got %v, want %v", i, nerr.Number, failblock.Number())
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}
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if nerr.Hash != failblock.Hash() {
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t.Errorf("(i=%d) wrong block hash in error, got %v, want %v", i, nerr.Hash, failblock.Hash())
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}
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// Check that all no blocks after the failing block have been inserted.
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for _, block := range blocks[fail:] {
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if bc.HasBlock(block.Hash()) {
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t.Errorf("(i=%d) invalid block %d present in chain", i, block.NumberU64())
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}
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}
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}
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}
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|
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// Tests that chain reorganizations handle transaction removals and reinsertions.
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func TestChainTxReorgs(t *testing.T) {
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params.MinGasLimit = big.NewInt(125000) // Minimum the gas limit may ever be.
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params.GenesisGasLimit = big.NewInt(3141592) // Gas limit of the Genesis block.
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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, _ = ethdb.NewMemDatabase()
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)
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genesis := WriteGenesisBlockForTesting(db,
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GenesisAccount{addr1, big.NewInt(1000000)},
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GenesisAccount{addr2, big.NewInt(1000000)},
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GenesisAccount{addr3, big.NewInt(1000000)},
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)
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// Create two transactions shared between the chains:
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// - postponed: transaction included at a later block in the forked chain
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// - swapped: transaction included at the same block number in the forked chain
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postponed, _ := types.NewTransaction(0, addr1, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key1)
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swapped, _ := types.NewTransaction(1, addr1, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key1)
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// Create two transactions that will be dropped by the forked chain:
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// - pastDrop: transaction dropped retroactively from a past block
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// - freshDrop: transaction dropped exactly at the block where the reorg is detected
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var pastDrop, freshDrop *types.Transaction
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// Create three transactions that will be added in the forked chain:
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// - pastAdd: transaction added before the reorganiztion is detected
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// - freshAdd: transaction added at the exact block the reorg is detected
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// - futureAdd: transaction added after the reorg has already finished
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var pastAdd, freshAdd, futureAdd *types.Transaction
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chain := GenerateChain(genesis, db, 3, func(i int, gen *BlockGen) {
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switch i {
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case 0:
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pastDrop, _ = types.NewTransaction(gen.TxNonce(addr2), addr2, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key2)
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gen.AddTx(pastDrop) // This transaction will be dropped in the fork from below the split point
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gen.AddTx(postponed) // This transaction will be postponed till block #3 in the fork
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case 2:
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freshDrop, _ = types.NewTransaction(gen.TxNonce(addr2), addr2, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key2)
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gen.AddTx(freshDrop) // This transaction will be dropped in the fork from exactly at the split point
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gen.AddTx(swapped) // This transaction will be swapped out at the exact height
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gen.OffsetTime(9) // Lower the block difficulty to simulate a weaker chain
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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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evmux := &event.TypeMux{}
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chainman, _ := NewChainManager(db, FakePow{}, evmux)
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chainman.SetProcessor(NewBlockProcessor(db, FakePow{}, chainman, evmux))
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if i, err := chainman.InsertChain(chain); err != nil {
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t.Fatalf("failed to insert original chain[%d]: %v", i, err)
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}
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// overwrite the old chain
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chain = GenerateChain(genesis, db, 5, func(i int, gen *BlockGen) {
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switch i {
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case 0:
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pastAdd, _ = types.NewTransaction(gen.TxNonce(addr3), addr3, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key3)
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gen.AddTx(pastAdd) // This transaction needs to be injected during reorg
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case 2:
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gen.AddTx(postponed) // This transaction was postponed from block #1 in the original chain
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gen.AddTx(swapped) // This transaction was swapped from the exact current spot in the original chain
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freshAdd, _ = types.NewTransaction(gen.TxNonce(addr3), addr3, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key3)
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gen.AddTx(freshAdd) // This transaction will be added exactly at reorg time
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case 3:
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futureAdd, _ = types.NewTransaction(gen.TxNonce(addr3), addr3, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key3)
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gen.AddTx(futureAdd) // This transaction will be added after a full reorg
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}
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})
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if _, err := chainman.InsertChain(chain); err != nil {
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t.Fatalf("failed to insert forked chain: %v", err)
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}
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// removed tx
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for i, tx := range (types.Transactions{pastDrop, freshDrop}) {
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if GetTransaction(db, tx.Hash()) != nil {
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t.Errorf("drop %d: tx found while shouldn't have been", i)
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}
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if GetReceipt(db, tx.Hash()) != nil {
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t.Errorf("drop %d: receipt found while shouldn't have been", i)
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}
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}
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// added tx
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for i, tx := range (types.Transactions{pastAdd, freshAdd, futureAdd}) {
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if GetTransaction(db, tx.Hash()) == nil {
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t.Errorf("add %d: expected tx to be found", i)
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}
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if GetReceipt(db, tx.Hash()) == nil {
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t.Errorf("add %d: expected receipt to be found", i)
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}
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}
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// shared tx
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for i, tx := range (types.Transactions{postponed, swapped}) {
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if GetTransaction(db, tx.Hash()) == nil {
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t.Errorf("share %d: expected tx to be found", i)
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}
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if GetReceipt(db, tx.Hash()) == nil {
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t.Errorf("share %d: expected receipt to be found", i)
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}
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}
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}
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