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406 lines
14 KiB
406 lines
14 KiB
// 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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"encoding/json"
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"math/big"
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"runtime"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus"
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"github.com/ethereum/go-ethereum/consensus/beacon"
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"github.com/ethereum/go-ethereum/consensus/clique"
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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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)
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// Tests that simple header verification works, for both good and bad blocks.
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func TestHeaderVerification(t *testing.T) {
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// Create a simple chain to verify
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var (
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testdb = rawdb.NewMemoryDatabase()
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gspec = &Genesis{Config: params.TestChainConfig}
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genesis = gspec.MustCommit(testdb)
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blocks, _ = GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), testdb, 8, nil)
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)
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headers := make([]*types.Header, len(blocks))
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for i, block := range blocks {
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headers[i] = block.Header()
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}
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// Run the header checker for blocks one-by-one, checking for both valid and invalid nonces
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chain, _ := NewBlockChain(testdb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
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defer chain.Stop()
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for i := 0; i < len(blocks); i++ {
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for j, valid := range []bool{true, false} {
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var results <-chan error
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if valid {
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engine := ethash.NewFaker()
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_, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true})
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} else {
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engine := ethash.NewFakeFailer(headers[i].Number.Uint64())
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_, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true})
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}
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// Wait for the verification result
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select {
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case result := <-results:
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if (result == nil) != valid {
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t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, result, valid)
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}
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case <-time.After(time.Second):
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t.Fatalf("test %d.%d: verification timeout", i, j)
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}
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// Make sure no more data is returned
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select {
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case result := <-results:
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t.Fatalf("test %d.%d: unexpected result returned: %v", i, j, result)
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case <-time.After(25 * time.Millisecond):
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}
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}
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chain.InsertChain(blocks[i : i+1])
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}
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}
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func TestHeaderVerificationForMergingClique(t *testing.T) { testHeaderVerificationForMerging(t, true) }
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func TestHeaderVerificationForMergingEthash(t *testing.T) { testHeaderVerificationForMerging(t, false) }
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// Tests the verification for eth1/2 merging, including pre-merge and post-merge
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func testHeaderVerificationForMerging(t *testing.T, isClique bool) {
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var (
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testdb = rawdb.NewMemoryDatabase()
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preBlocks []*types.Block
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postBlocks []*types.Block
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runEngine consensus.Engine
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genspec *Genesis
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merger = consensus.NewMerger(rawdb.NewMemoryDatabase())
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)
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if isClique {
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var (
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key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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addr = crypto.PubkeyToAddress(key.PublicKey)
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engine = clique.New(params.AllCliqueProtocolChanges.Clique, testdb)
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)
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genspec = &Genesis{
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Config: params.AllCliqueProtocolChanges,
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ExtraData: make([]byte, 32+common.AddressLength+crypto.SignatureLength),
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Alloc: map[common.Address]GenesisAccount{
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addr: {Balance: big.NewInt(1)},
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},
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BaseFee: big.NewInt(params.InitialBaseFee),
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Difficulty: new(big.Int),
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}
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copy(genspec.ExtraData[32:], addr[:])
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genesis := genspec.MustCommit(testdb)
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genEngine := beacon.New(engine)
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preBlocks, _ = GenerateChain(params.AllCliqueProtocolChanges, genesis, genEngine, testdb, 8, nil)
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td := 0
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for i, block := range preBlocks {
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header := block.Header()
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if i > 0 {
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header.ParentHash = preBlocks[i-1].Hash()
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}
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header.Extra = make([]byte, 32+crypto.SignatureLength)
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header.Difficulty = big.NewInt(2)
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sig, _ := crypto.Sign(genEngine.SealHash(header).Bytes(), key)
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copy(header.Extra[len(header.Extra)-crypto.SignatureLength:], sig)
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preBlocks[i] = block.WithSeal(header)
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// calculate td
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td += int(block.Difficulty().Uint64())
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}
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config := *params.AllCliqueProtocolChanges
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config.TerminalTotalDifficulty = big.NewInt(int64(td))
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postBlocks, _ = GenerateChain(&config, preBlocks[len(preBlocks)-1], genEngine, testdb, 8, nil)
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runEngine = beacon.New(engine)
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genspec.Config = &config
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} else {
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genspec = &Genesis{Config: params.TestChainConfig}
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genesis := genspec.MustCommit(testdb)
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genEngine := beacon.New(ethash.NewFaker())
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preBlocks, _ = GenerateChain(params.TestChainConfig, genesis, genEngine, testdb, 8, nil)
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td := 0
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for _, block := range preBlocks {
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// calculate td
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td += int(block.Difficulty().Uint64())
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}
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config := *params.TestChainConfig
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config.TerminalTotalDifficulty = big.NewInt(int64(td))
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postBlocks, _ = GenerateChain(params.TestChainConfig, preBlocks[len(preBlocks)-1], genEngine, testdb, 8, nil)
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runEngine = beacon.New(ethash.NewFaker())
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genspec.Config = &config
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}
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preHeaders := make([]*types.Header, len(preBlocks))
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for i, block := range preBlocks {
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preHeaders[i] = block.Header()
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blob, _ := json.Marshal(block.Header())
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t.Logf("Log header before the merging %d: %v", block.NumberU64(), string(blob))
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}
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postHeaders := make([]*types.Header, len(postBlocks))
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for i, block := range postBlocks {
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postHeaders[i] = block.Header()
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blob, _ := json.Marshal(block.Header())
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t.Logf("Log header after the merging %d: %v", block.NumberU64(), string(blob))
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}
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// Run the header checker for blocks one-by-one, checking for both valid and invalid nonces
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chain, _ := NewBlockChain(testdb, nil, genspec, nil, runEngine, vm.Config{}, nil, nil)
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defer chain.Stop()
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// Verify the blocks before the merging
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for i := 0; i < len(preBlocks); i++ {
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_, results := runEngine.VerifyHeaders(chain, []*types.Header{preHeaders[i]}, []bool{true})
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// Wait for the verification result
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select {
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case result := <-results:
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if result != nil {
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t.Errorf("test %d: verification failed %v", i, result)
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}
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case <-time.After(time.Second):
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t.Fatalf("test %d: verification timeout", i)
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}
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// Make sure no more data is returned
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select {
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case result := <-results:
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t.Fatalf("test %d: unexpected result returned: %v", i, result)
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case <-time.After(25 * time.Millisecond):
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}
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chain.InsertChain(preBlocks[i : i+1])
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}
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// Make the transition
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merger.ReachTTD()
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merger.FinalizePoS()
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// Verify the blocks after the merging
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for i := 0; i < len(postBlocks); i++ {
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_, results := runEngine.VerifyHeaders(chain, []*types.Header{postHeaders[i]}, []bool{true})
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// Wait for the verification result
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select {
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case result := <-results:
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if result != nil {
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t.Errorf("test %d: verification failed %v", i, result)
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}
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case <-time.After(time.Second):
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t.Fatalf("test %d: verification timeout", i)
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}
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// Make sure no more data is returned
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select {
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case result := <-results:
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t.Fatalf("test %d: unexpected result returned: %v", i, result)
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case <-time.After(25 * time.Millisecond):
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}
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chain.InsertBlockWithoutSetHead(postBlocks[i])
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}
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// Verify the blocks with pre-merge blocks and post-merge blocks
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var (
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headers []*types.Header
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seals []bool
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)
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for _, block := range preBlocks {
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headers = append(headers, block.Header())
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seals = append(seals, true)
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}
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for _, block := range postBlocks {
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headers = append(headers, block.Header())
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seals = append(seals, true)
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}
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_, results := runEngine.VerifyHeaders(chain, headers, seals)
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for i := 0; i < len(headers); i++ {
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select {
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case result := <-results:
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if result != nil {
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t.Errorf("test %d: verification failed %v", i, result)
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}
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case <-time.After(time.Second):
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t.Fatalf("test %d: verification timeout", i)
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}
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}
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// Make sure no more data is returned
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select {
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case result := <-results:
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t.Fatalf("unexpected result returned: %v", result)
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case <-time.After(25 * time.Millisecond):
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}
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}
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// Tests that concurrent header verification works, for both good and bad blocks.
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func TestHeaderConcurrentVerification2(t *testing.T) { testHeaderConcurrentVerification(t, 2) }
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func TestHeaderConcurrentVerification8(t *testing.T) { testHeaderConcurrentVerification(t, 8) }
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func TestHeaderConcurrentVerification32(t *testing.T) { testHeaderConcurrentVerification(t, 32) }
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func testHeaderConcurrentVerification(t *testing.T, threads int) {
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// Create a simple chain to verify
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var (
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testdb = rawdb.NewMemoryDatabase()
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gspec = &Genesis{Config: params.TestChainConfig}
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genesis = gspec.MustCommit(testdb)
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blocks, _ = GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), testdb, 8, nil)
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)
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headers := make([]*types.Header, len(blocks))
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seals := make([]bool, len(blocks))
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for i, block := range blocks {
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headers[i] = block.Header()
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seals[i] = true
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}
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// Set the number of threads to verify on
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old := runtime.GOMAXPROCS(threads)
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defer runtime.GOMAXPROCS(old)
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// Run the header checker for the entire block chain at once both for a valid and
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// also an invalid chain (enough if one arbitrary block is invalid).
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for i, valid := range []bool{true, false} {
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var results <-chan error
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if valid {
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chain, _ := NewBlockChain(testdb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
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_, results = chain.engine.VerifyHeaders(chain, headers, seals)
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chain.Stop()
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} else {
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chain, _ := NewBlockChain(testdb, nil, gspec, nil, ethash.NewFakeFailer(uint64(len(headers)-1)), vm.Config{}, nil, nil)
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_, results = chain.engine.VerifyHeaders(chain, headers, seals)
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chain.Stop()
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}
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// Wait for all the verification results
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checks := make(map[int]error)
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for j := 0; j < len(blocks); j++ {
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select {
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case result := <-results:
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checks[j] = result
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case <-time.After(time.Second):
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t.Fatalf("test %d.%d: verification timeout", i, j)
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}
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}
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// Check nonce check validity
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for j := 0; j < len(blocks); j++ {
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want := valid || (j < len(blocks)-2) // We chose the last-but-one nonce in the chain to fail
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if (checks[j] == nil) != want {
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t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, checks[j], want)
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}
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if !want {
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// A few blocks after the first error may pass verification due to concurrent
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// workers. We don't care about those in this test, just that the correct block
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// errors out.
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break
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}
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}
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// Make sure no more data is returned
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select {
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case result := <-results:
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t.Fatalf("test %d: unexpected result returned: %v", i, result)
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case <-time.After(25 * time.Millisecond):
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}
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}
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}
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// Tests that aborting a header validation indeed prevents further checks from being
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// run, as well as checks that no left-over goroutines are leaked.
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func TestHeaderConcurrentAbortion2(t *testing.T) { testHeaderConcurrentAbortion(t, 2) }
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func TestHeaderConcurrentAbortion8(t *testing.T) { testHeaderConcurrentAbortion(t, 8) }
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func TestHeaderConcurrentAbortion32(t *testing.T) { testHeaderConcurrentAbortion(t, 32) }
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func testHeaderConcurrentAbortion(t *testing.T, threads int) {
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// Create a simple chain to verify
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var (
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testdb = rawdb.NewMemoryDatabase()
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gspec = &Genesis{Config: params.TestChainConfig}
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genesis = gspec.MustCommit(testdb)
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blocks, _ = GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), testdb, 1024, nil)
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)
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headers := make([]*types.Header, len(blocks))
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seals := make([]bool, len(blocks))
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for i, block := range blocks {
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headers[i] = block.Header()
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seals[i] = true
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}
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// Set the number of threads to verify on
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old := runtime.GOMAXPROCS(threads)
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defer runtime.GOMAXPROCS(old)
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// Start the verifications and immediately abort
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chain, _ := NewBlockChain(testdb, nil, gspec, nil, ethash.NewFakeDelayer(time.Millisecond), vm.Config{}, nil, nil)
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defer chain.Stop()
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abort, results := chain.engine.VerifyHeaders(chain, headers, seals)
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close(abort)
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// Deplete the results channel
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verified := 0
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for depleted := false; !depleted; {
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select {
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case result := <-results:
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if result != nil {
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t.Errorf("header %d: validation failed: %v", verified, result)
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}
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verified++
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case <-time.After(50 * time.Millisecond):
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depleted = true
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}
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}
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// Check that abortion was honored by not processing too many POWs
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if verified > 2*threads {
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t.Errorf("verification count too large: have %d, want below %d", verified, 2*threads)
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}
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}
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func TestCalcGasLimit(t *testing.T) {
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for i, tc := range []struct {
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pGasLimit uint64
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max uint64
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min uint64
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}{
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{20000000, 20019530, 19980470},
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{40000000, 40039061, 39960939},
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} {
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// Increase
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if have, want := CalcGasLimit(tc.pGasLimit, 2*tc.pGasLimit), tc.max; have != want {
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t.Errorf("test %d: have %d want <%d", i, have, want)
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}
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// Decrease
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if have, want := CalcGasLimit(tc.pGasLimit, 0), tc.min; have != want {
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t.Errorf("test %d: have %d want >%d", i, have, want)
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}
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// Small decrease
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if have, want := CalcGasLimit(tc.pGasLimit, tc.pGasLimit-1), tc.pGasLimit-1; have != want {
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t.Errorf("test %d: have %d want %d", i, have, want)
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}
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// Small increase
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if have, want := CalcGasLimit(tc.pGasLimit, tc.pGasLimit+1), tc.pGasLimit+1; have != want {
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t.Errorf("test %d: have %d want %d", i, have, want)
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}
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// No change
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if have, want := CalcGasLimit(tc.pGasLimit, tc.pGasLimit), tc.pGasLimit; have != want {
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t.Errorf("test %d: have %d want %d", i, have, want)
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}
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}
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}
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