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core: flush out trie cache more meaningfully on stop (#16143)

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* core: flush out trie cache more meaningfully on stop

* core: upgrade legacy tests to chain maker
This commit is contained in:
Péter Szilágyi 2018-02-23 14:02:33 +02:00 committed by GitHub
parent fb5d085234
commit 89f914c030
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 123 additions and 128 deletions
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25
core/blockchain.go
View File

@ -648,22 +648,21 @@ func (bc *BlockChain) Stop() {
bc.wg.Wait()
// Ensure the state of a recent block is also stored to disk before exiting.
// It is fine if this state does not exist (fast start/stop cycle), but it is
// advisable to leave an N block gap from the head so 1) a restart loads up
// the last N blocks as sync assistance to remote nodes; 2) a restart during
// a (small) reorg doesn't require deep reprocesses; 3) chain "repair" from
// missing states are constantly tested.
//
// This may be tuned a bit on mainnet if its too annoying to reprocess the last
// N blocks.
// We're writing three different states to catch different restart scenarios:
// - HEAD: So we don't need to reprocess any blocks in the general case
// - HEAD-1: So we don't do large reorgs if our HEAD becomes an uncle
// - HEAD-127: So we have a hard limit on the number of blocks reexecuted
if !bc.cacheConfig.Disabled {
triedb := bc.stateCache.TrieDB()
if number := bc.CurrentBlock().NumberU64(); number >= triesInMemory {
recent := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - triesInMemory + 1)
log.Info("Writing cached state to disk", "block", recent.Number(), "hash", recent.Hash(), "root", recent.Root())
if err := triedb.Commit(recent.Root(), true); err != nil {
log.Error("Failed to commit recent state trie", "err", err)
for _, offset := range []uint64{0, 1, triesInMemory - 1} {
if number := bc.CurrentBlock().NumberU64(); number > offset {
recent := bc.GetBlockByNumber(number - offset)
log.Info("Writing cached state to disk", "block", recent.Number(), "hash", recent.Hash(), "root", recent.Root())
if err := triedb.Commit(recent.Root(), true); err != nil {
log.Error("Failed to commit recent state trie", "err", err)
}
}
}
for !bc.triegc.Empty() {

220
core/blockchain_test.go
View File

@ -34,26 +34,6 @@ import (
"github.com/ethereum/go-ethereum/params"
)
// newTestBlockChain creates a blockchain without validation.
func newTestBlockChain(fake bool) *BlockChain {
db, _ := ethdb.NewMemDatabase()
gspec := &Genesis{
Config: params.TestChainConfig,
Difficulty: big.NewInt(1),
}
gspec.MustCommit(db)
engine := ethash.NewFullFaker()
if !fake {
engine = ethash.NewTester()
}
blockchain, err := NewBlockChain(db, nil, gspec.Config, engine, vm.Config{})
if err != nil {
panic(err)
}
blockchain.SetValidator(bproc{})
return blockchain
}
// Test fork of length N starting from block i
func testFork(t *testing.T, blockchain *BlockChain, i, n int, full bool, comparator func(td1, td2 *big.Int)) {
// Copy old chain up to #i into a new db
@ -183,13 +163,18 @@ func insertChain(done chan bool, blockchain *BlockChain, chain types.Blocks, t *
}
func TestLastBlock(t *testing.T) {
bchain := newTestBlockChain(false)
defer bchain.Stop()
_, blockchain, err := newCanonical(ethash.NewFaker(), 0, true)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
block := makeBlockChain(bchain.CurrentBlock(), 1, ethash.NewFaker(), bchain.db, 0)[0]
bchain.insert(block)
if block.Hash() != GetHeadBlockHash(bchain.db) {
t.Errorf("Write/Get HeadBlockHash failed")
blocks := makeBlockChain(blockchain.CurrentBlock(), 1, ethash.NewFullFaker(), blockchain.db, 0)
if _, err := blockchain.InsertChain(blocks); err != nil {
t.Fatalf("Failed to insert block: %v", err)
}
if blocks[len(blocks)-1].Hash() != GetHeadBlockHash(blockchain.db) {
t.Fatalf("Write/Get HeadBlockHash failed")
}
}
@ -337,55 +322,13 @@ func testBrokenChain(t *testing.T, full bool) {
}
}
type bproc struct{}
func (bproc) ValidateBody(*types.Block) error { return nil }
func (bproc) ValidateState(block, parent *types.Block, state *state.StateDB, receipts types.Receipts, usedGas uint64) error {
return nil
}
func (bproc) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error) {
return nil, nil, 0, nil
}
func makeHeaderChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Header {
blocks := makeBlockChainWithDiff(genesis, d, seed)
headers := make([]*types.Header, len(blocks))
for i, block := range blocks {
headers[i] = block.Header()
}
return headers
}
func makeBlockChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block {
var chain []*types.Block
for i, difficulty := range d {
header := &types.Header{
Coinbase: common.Address{seed},
Number: big.NewInt(int64(i + 1)),
Difficulty: big.NewInt(int64(difficulty)),
UncleHash: types.EmptyUncleHash,
TxHash: types.EmptyRootHash,
ReceiptHash: types.EmptyRootHash,
Time: big.NewInt(int64(i) + 1),
}
if i == 0 {
header.ParentHash = genesis.Hash()
} else {
header.ParentHash = chain[i-1].Hash()
}
block := types.NewBlockWithHeader(header)
chain = append(chain, block)
}
return chain
}
// Tests that reorganising a long difficult chain after a short easy one
// overwrites the canonical numbers and links in the database.
func TestReorgLongHeaders(t *testing.T) { testReorgLong(t, false) }
func TestReorgLongBlocks(t *testing.T) { testReorgLong(t, true) }
func testReorgLong(t *testing.T, full bool) {
testReorg(t, []int{1, 2, 4}, []int{1, 2, 3, 4}, 10, full)
testReorg(t, []int64{0, 0, -9}, []int64{0, 0, 0, -9}, 393280, full)
}
// Tests that reorganising a short difficult chain after a long easy one
@ -394,45 +337,82 @@ func TestReorgShortHeaders(t *testing.T) { testReorgShort(t, false) }
func TestReorgShortBlocks(t *testing.T) { testReorgShort(t, true) }
func testReorgShort(t *testing.T, full bool) {
testReorg(t, []int{1, 2, 3, 4}, []int{1, 10}, 11, full)
// Create a long easy chain vs. a short heavy one. Due to difficulty adjustment
// we need a fairly long chain of blocks with different difficulties for a short
// one to become heavyer than a long one. The 96 is an empirical value.
easy := make([]int64, 96)
for i := 0; i < len(easy); i++ {
easy[i] = 60
}
diff := make([]int64, len(easy)-1)
for i := 0; i < len(diff); i++ {
diff[i] = -9
}
testReorg(t, easy, diff, 12615120, full)
}
func testReorg(t *testing.T, first, second []int, td int64, full bool) {
bc := newTestBlockChain(true)
defer bc.Stop()
func testReorg(t *testing.T, first, second []int64, td int64, full bool) {
// Create a pristine chain and database
db, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
// Insert an easy and a difficult chain afterwards
easyBlocks, _ := GenerateChain(params.TestChainConfig, blockchain.CurrentBlock(), ethash.NewFaker(), db, len(first), func(i int, b *BlockGen) {
b.OffsetTime(first[i])
})
diffBlocks, _ := GenerateChain(params.TestChainConfig, blockchain.CurrentBlock(), ethash.NewFaker(), db, len(second), func(i int, b *BlockGen) {
b.OffsetTime(second[i])
})
if full {
bc.InsertChain(makeBlockChainWithDiff(bc.genesisBlock, first, 11))
bc.InsertChain(makeBlockChainWithDiff(bc.genesisBlock, second, 22))
if _, err := blockchain.InsertChain(easyBlocks); err != nil {
t.Fatalf("failed to insert easy chain: %v", err)
}
if _, err := blockchain.InsertChain(diffBlocks); err != nil {
t.Fatalf("failed to insert difficult chain: %v", err)
}
} else {
bc.InsertHeaderChain(makeHeaderChainWithDiff(bc.genesisBlock, first, 11), 1)
bc.InsertHeaderChain(makeHeaderChainWithDiff(bc.genesisBlock, second, 22), 1)
easyHeaders := make([]*types.Header, len(easyBlocks))
for i, block := range easyBlocks {
easyHeaders[i] = block.Header()
}
diffHeaders := make([]*types.Header, len(diffBlocks))
for i, block := range diffBlocks {
diffHeaders[i] = block.Header()
}
if _, err := blockchain.InsertHeaderChain(easyHeaders, 1); err != nil {
t.Fatalf("failed to insert easy chain: %v", err)
}
if _, err := blockchain.InsertHeaderChain(diffHeaders, 1); err != nil {
t.Fatalf("failed to insert difficult chain: %v", err)
}
}
// Check that the chain is valid number and link wise
if full {
prev := bc.CurrentBlock()
for block := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, bc.GetBlockByNumber(block.NumberU64()-1) {
prev := blockchain.CurrentBlock()
for block := blockchain.GetBlockByNumber(blockchain.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, blockchain.GetBlockByNumber(block.NumberU64()-1) {
if prev.ParentHash() != block.Hash() {
t.Errorf("parent block hash mismatch: have %x, want %x", prev.ParentHash(), block.Hash())
}
}
} else {
prev := bc.CurrentHeader()
for header := bc.GetHeaderByNumber(bc.CurrentHeader().Number.Uint64() - 1); header.Number.Uint64() != 0; prev, header = header, bc.GetHeaderByNumber(header.Number.Uint64()-1) {
prev := blockchain.CurrentHeader()
for header := blockchain.GetHeaderByNumber(blockchain.CurrentHeader().Number.Uint64() - 1); header.Number.Uint64() != 0; prev, header = header, blockchain.GetHeaderByNumber(header.Number.Uint64()-1) {
if prev.ParentHash != header.Hash() {
t.Errorf("parent header hash mismatch: have %x, want %x", prev.ParentHash, header.Hash())
}
}
}
// Make sure the chain total difficulty is the correct one
want := new(big.Int).Add(bc.genesisBlock.Difficulty(), big.NewInt(td))
want := new(big.Int).Add(blockchain.genesisBlock.Difficulty(), big.NewInt(td))
if full {
if have := bc.GetTdByHash(bc.CurrentBlock().Hash()); have.Cmp(want) != 0 {
if have := blockchain.GetTdByHash(blockchain.CurrentBlock().Hash()); have.Cmp(want) != 0 {
t.Errorf("total difficulty mismatch: have %v, want %v", have, want)
}
} else {
if have := bc.GetTdByHash(bc.CurrentHeader().Hash()); have.Cmp(want) != 0 {
if have := blockchain.GetTdByHash(blockchain.CurrentHeader().Hash()); have.Cmp(want) != 0 {
t.Errorf("total difficulty mismatch: have %v, want %v", have, want)
}
}
@ -443,19 +423,28 @@ func TestBadHeaderHashes(t *testing.T) { testBadHashes(t, false) }
func TestBadBlockHashes(t *testing.T) { testBadHashes(t, true) }
func testBadHashes(t *testing.T, full bool) {
bc := newTestBlockChain(true)
defer bc.Stop()
// Create a pristine chain and database
db, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
// Create a chain, ban a hash and try to import
var err error
if full {
blocks := makeBlockChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10)
blocks := makeBlockChain(blockchain.CurrentBlock(), 3, ethash.NewFaker(), db, 10)
BadHashes[blocks[2].Header().Hash()] = true
_, err = bc.InsertChain(blocks)
defer func() { delete(BadHashes, blocks[2].Header().Hash()) }()
_, err = blockchain.InsertChain(blocks)
} else {
headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10)
headers := makeHeaderChain(blockchain.CurrentHeader(), 3, ethash.NewFaker(), db, 10)
BadHashes[headers[2].Hash()] = true
_, err = bc.InsertHeaderChain(headers, 1)
defer func() { delete(BadHashes, headers[2].Hash()) }()
_, err = blockchain.InsertHeaderChain(headers, 1)
}
if err != ErrBlacklistedHash {
t.Errorf("error mismatch: have: %v, want: %v", err, ErrBlacklistedHash)
@ -468,40 +457,41 @@ func TestReorgBadHeaderHashes(t *testing.T) { testReorgBadHashes(t, false) }
func TestReorgBadBlockHashes(t *testing.T) { testReorgBadHashes(t, true) }
func testReorgBadHashes(t *testing.T, full bool) {
bc := newTestBlockChain(true)
defer bc.Stop()
// Create a pristine chain and database
db, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
// Create a chain, import and ban afterwards
headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 3, 4}, 10)
blocks := makeBlockChainWithDiff(bc.genesisBlock, []int{1, 2, 3, 4}, 10)
headers := makeHeaderChain(blockchain.CurrentHeader(), 4, ethash.NewFaker(), db, 10)
blocks := makeBlockChain(blockchain.CurrentBlock(), 4, ethash.NewFaker(), db, 10)
if full {
if _, err := bc.InsertChain(blocks); err != nil {
t.Fatalf("failed to import blocks: %v", err)
if _, err = blockchain.InsertChain(blocks); err != nil {
t.Errorf("failed to import blocks: %v", err)
}
if bc.CurrentBlock().Hash() != blocks[3].Hash() {
t.Errorf("last block hash mismatch: have: %x, want %x", bc.CurrentBlock().Hash(), blocks[3].Header().Hash())
if blockchain.CurrentBlock().Hash() != blocks[3].Hash() {
t.Errorf("last block hash mismatch: have: %x, want %x", blockchain.CurrentBlock().Hash(), blocks[3].Header().Hash())
}
BadHashes[blocks[3].Header().Hash()] = true
defer func() { delete(BadHashes, blocks[3].Header().Hash()) }()
} else {
if _, err := bc.InsertHeaderChain(headers, 1); err != nil {
t.Fatalf("failed to import headers: %v", err)
if _, err = blockchain.InsertHeaderChain(headers, 1); err != nil {
t.Errorf("failed to import headers: %v", err)
}
if bc.CurrentHeader().Hash() != headers[3].Hash() {
t.Errorf("last header hash mismatch: have: %x, want %x", bc.CurrentHeader().Hash(), headers[3].Hash())
if blockchain.CurrentHeader().Hash() != headers[3].Hash() {
t.Errorf("last header hash mismatch: have: %x, want %x", blockchain.CurrentHeader().Hash(), headers[3].Hash())
}
BadHashes[headers[3].Hash()] = true
defer func() { delete(BadHashes, headers[3].Hash()) }()
}
blockchain.Stop()
// Create a new BlockChain and check that it rolled back the state.
ncm, err := NewBlockChain(bc.db, nil, bc.chainConfig, ethash.NewFaker(), vm.Config{})
ncm, err := NewBlockChain(blockchain.db, nil, blockchain.chainConfig, ethash.NewFaker(), vm.Config{})
if err != nil {
t.Fatalf("failed to create new chain manager: %v", err)
}
defer ncm.Stop()
if full {
if ncm.CurrentBlock().Hash() != blocks[2].Header().Hash() {
t.Errorf("last block hash mismatch: have: %x, want %x", ncm.CurrentBlock().Hash(), blocks[2].Header().Hash())
@ -514,6 +504,7 @@ func testReorgBadHashes(t *testing.T, full bool) {
t.Errorf("last header hash mismatch: have: %x, want %x", ncm.CurrentHeader().Hash(), headers[2].Hash())
}
}
ncm.Stop()
}
// Tests chain insertions in the face of one entity containing an invalid nonce.
@ -989,10 +980,13 @@ done:
// Tests if the canonical block can be fetched from the database during chain insertion.
func TestCanonicalBlockRetrieval(t *testing.T) {
bc := newTestBlockChain(true)
defer bc.Stop()
_, blockchain, err := newCanonical(ethash.NewFaker(), 0, true)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
chain, _ := GenerateChain(bc.chainConfig, bc.genesisBlock, ethash.NewFaker(), bc.db, 10, func(i int, gen *BlockGen) {})
chain, _ := GenerateChain(blockchain.chainConfig, blockchain.genesisBlock, ethash.NewFaker(), blockchain.db, 10, func(i int, gen *BlockGen) {})
var pend sync.WaitGroup
pend.Add(len(chain))
@ -1003,14 +997,14 @@ func TestCanonicalBlockRetrieval(t *testing.T) {
// try to retrieve a block by its canonical hash and see if the block data can be retrieved.
for {
ch := GetCanonicalHash(bc.db, block.NumberU64())
ch := GetCanonicalHash(blockchain.db, block.NumberU64())
if ch == (common.Hash{}) {
continue // busy wait for canonical hash to be written
}
if ch != block.Hash() {
t.Fatalf("unknown canonical hash, want %s, got %s", block.Hash().Hex(), ch.Hex())
}
fb := GetBlock(bc.db, ch, block.NumberU64())
fb := GetBlock(blockchain.db, ch, block.NumberU64())
if fb == nil {
t.Fatalf("unable to retrieve block %d for canonical hash: %s", block.NumberU64(), ch.Hex())
}
@ -1021,7 +1015,7 @@ func TestCanonicalBlockRetrieval(t *testing.T) {
}
}(chain[i])
if _, err := bc.InsertChain(types.Blocks{chain[i]}); err != nil {
if _, err := blockchain.InsertChain(types.Blocks{chain[i]}); err != nil {
t.Fatalf("failed to insert block %d: %v", i, err)
}
}

6
core/genesis_test.go
View File

@ -118,10 +118,12 @@ func TestSetupGenesis(t *testing.T) {
// Commit the 'old' genesis block with Homestead transition at #2.
// Advance to block #4, past the homestead transition block of customg.
genesis := oldcustomg.MustCommit(db)
bc, _ := NewBlockChain(db, nil, oldcustomg.Config, ethash.NewFullFaker(), vm.Config{})
defer bc.Stop()
bc.SetValidator(bproc{})
bc.InsertChain(makeBlockChainWithDiff(genesis, []int{2, 3, 4, 5}, 0))
blocks, _ := GenerateChain(oldcustomg.Config, genesis, ethash.NewFaker(), db, 4, nil)
bc.InsertChain(blocks)
bc.CurrentBlock()
// This should return a compatibility error.
return SetupGenesisBlock(db, &customg)