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core, eth: split the db blocks into headers and bodies

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This commit is contained in:
Péter Szilágyi
2015-08-31 20:21:02 +03:00
parent 4e075e4013
commit 2b339cbbd8
9 changed files with 464 additions and 260 deletions
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274
core/chain_manager.go
View File

@@ -48,6 +48,8 @@ var (
)
const (
headerCacheLimit = 256
bodyCacheLimit = 256
blockCacheLimit = 256
maxFutureBlocks = 256
maxTimeFutureBlocks = 30
@@ -71,7 +73,10 @@ type ChainManager struct {
lastBlockHash common.Hash
currentGasLimit *big.Int
cache *lru.Cache // cache is the LRU caching
headerCache *lru.Cache // Cache for the most recent block headers
bodyCache *lru.Cache // Cache for the most recent block bodies
bodyRLPCache *lru.Cache // Cache for the most recent block bodies in RLP encoded format
blockCache *lru.Cache // Cache for the most recent entire blocks
futureBlocks *lru.Cache // future blocks are blocks added for later processing
quit chan struct{}
@@ -84,12 +89,21 @@ type ChainManager struct {
}
func NewChainManager(chainDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error) {
cache, _ := lru.New(blockCacheLimit)
headerCache, _ := lru.New(headerCacheLimit)
bodyCache, _ := lru.New(bodyCacheLimit)
bodyRLPCache, _ := lru.New(bodyCacheLimit)
blockCache, _ := lru.New(blockCacheLimit)
futureBlocks, _ := lru.New(maxFutureBlocks)
bc := &ChainManager{
chainDb: chainDb,
eventMux: mux,
quit: make(chan struct{}),
cache: cache,
headerCache: headerCache,
bodyCache: bodyCache,
bodyRLPCache: bodyRLPCache,
blockCache: blockCache,
futureBlocks: futureBlocks,
pow: pow,
}
@@ -105,11 +119,9 @@ func NewChainManager(chainDb common.Database, pow pow.PoW, mux *event.TypeMux) (
}
glog.V(logger.Info).Infoln("WARNING: Wrote default ethereum genesis block")
}
if err := bc.setLastState(); err != nil {
return nil, err
}
// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
for hash, _ := range BadHashes {
if block := bc.GetBlock(hash); block != nil {
@@ -123,14 +135,8 @@ func NewChainManager(chainDb common.Database, pow pow.PoW, mux *event.TypeMux) (
glog.V(logger.Error).Infoln("Chain reorg was successfull. Resuming normal operation")
}
}
// Take ownership of this particular state
bc.futureBlocks, _ = lru.New(maxFutureBlocks)
bc.makeCache()
go bc.update()
return bc, nil
}
@@ -139,13 +145,15 @@ func (bc *ChainManager) SetHead(head *types.Block) {
defer bc.mu.Unlock()
for block := bc.currentBlock; block != nil && block.Hash() != head.Hash(); block = bc.GetBlock(block.ParentHash()) {
bc.removeBlock(block)
DeleteBlock(bc.chainDb, block.Hash())
}
bc.headerCache.Purge()
bc.bodyCache.Purge()
bc.bodyRLPCache.Purge()
bc.blockCache.Purge()
bc.futureBlocks.Purge()
bc.cache, _ = lru.New(blockCacheLimit)
bc.currentBlock = head
bc.makeCache()
bc.setTotalDifficulty(head.Td)
bc.insert(head)
bc.setLastState()
@@ -199,11 +207,9 @@ func (bc *ChainManager) recover() bool {
if len(data) != 0 {
block := bc.GetBlock(common.BytesToHash(data))
if block != nil {
err := bc.chainDb.Put([]byte("LastBlock"), block.Hash().Bytes())
if err != nil {
glog.Fatalln("db write err:", err)
if err := WriteHead(bc.chainDb, block); err != nil {
glog.Fatalf("failed to write database head: %v", err)
}
bc.currentBlock = block
bc.lastBlockHash = block.Hash()
return true
@@ -213,14 +219,14 @@ func (bc *ChainManager) recover() bool {
}
func (bc *ChainManager) setLastState() error {
data, _ := bc.chainDb.Get([]byte("LastBlock"))
if len(data) != 0 {
block := bc.GetBlock(common.BytesToHash(data))
head := GetHeadHash(bc.chainDb)
if head != (common.Hash{}) {
block := bc.GetBlock(head)
if block != nil {
bc.currentBlock = block
bc.lastBlockHash = block.Hash()
} else {
glog.Infof("LastBlock (%x) not found. Recovering...\n", data)
glog.Infof("LastBlock (%x) not found. Recovering...\n", head)
if bc.recover() {
glog.Infof("Recover successful")
} else {
@@ -240,63 +246,37 @@ func (bc *ChainManager) setLastState() error {
return nil
}
func (bc *ChainManager) makeCache() {
bc.cache, _ = lru.New(blockCacheLimit)
// load in last `blockCacheLimit` - 1 blocks. Last block is the current.
bc.cache.Add(bc.genesisBlock.Hash(), bc.genesisBlock)
for _, block := range bc.GetBlocksFromHash(bc.currentBlock.Hash(), blockCacheLimit) {
bc.cache.Add(block.Hash(), block)
}
}
// Reset purges the entire blockchain, restoring it to its genesis state.
func (bc *ChainManager) Reset() {
bc.ResetWithGenesisBlock(bc.genesisBlock)
}
// ResetWithGenesisBlock purges the entire blockchain, restoring it to the
// specified genesis state.
func (bc *ChainManager) ResetWithGenesisBlock(genesis *types.Block) {
bc.mu.Lock()
defer bc.mu.Unlock()
// Dump the entire block chain and purge the caches
for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.ParentHash()) {
bc.removeBlock(block)
DeleteBlock(bc.chainDb, block.Hash())
}
bc.headerCache.Purge()
bc.bodyCache.Purge()
bc.bodyRLPCache.Purge()
bc.blockCache.Purge()
bc.futureBlocks.Purge()
bc.cache, _ = lru.New(blockCacheLimit)
// Prepare the genesis block and reinitialize the chain
bc.genesisBlock = genesis
bc.genesisBlock.Td = genesis.Difficulty()
// Prepare the genesis block
err := WriteBlock(bc.chainDb, bc.genesisBlock)
if err != nil {
glog.Fatalln("db err:", err)
if err := WriteBlock(bc.chainDb, bc.genesisBlock); err != nil {
glog.Fatalf("failed to write genesis block: %v", err)
}
bc.insert(bc.genesisBlock)
bc.currentBlock = bc.genesisBlock
bc.makeCache()
bc.setTotalDifficulty(common.Big("0"))
}
func (bc *ChainManager) removeBlock(block *types.Block) {
bc.chainDb.Delete(append(blockHashPre, block.Hash().Bytes()...))
}
func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block) {
bc.mu.Lock()
defer bc.mu.Unlock()
for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.ParentHash()) {
bc.removeBlock(block)
}
// Prepare the genesis block
gb.Td = gb.Difficulty()
bc.genesisBlock = gb
err := WriteBlock(bc.chainDb, bc.genesisBlock)
if err != nil {
glog.Fatalln("db err:", err)
}
bc.insert(bc.genesisBlock)
bc.currentBlock = bc.genesisBlock
bc.makeCache()
bc.td = gb.Difficulty()
bc.setTotalDifficulty(genesis.Difficulty())
}
// Export writes the active chain to the given writer.
@@ -359,61 +339,130 @@ func (bc *ChainManager) Genesis() *types.Block {
return bc.genesisBlock
}
// Block fetching methods
// HasHeader checks if a block header is present in the database or not, caching
// it if present.
func (bc *ChainManager) HasHeader(hash common.Hash) bool {
return bc.GetHeader(hash) != nil
}
// GetHeader retrieves a block header from the database by hash, caching it if
// found.
func (self *ChainManager) GetHeader(hash common.Hash) *types.Header {
// Short circuit if the header's already in the cache, retrieve otherwise
if header, ok := self.headerCache.Get(hash); ok {
return header.(*types.Header)
}
header := GetHeaderByHash(self.chainDb, hash)
if header == nil {
return nil
}
// Cache the found header for next time and return
self.headerCache.Add(header.Hash(), header)
return header
}
// GetHeaderByNumber retrieves a block header from the database by number,
// caching it (associated with its hash) if found.
func (self *ChainManager) GetHeaderByNumber(number uint64) *types.Header {
hash := GetHashByNumber(self.chainDb, number)
if hash == (common.Hash{}) {
return nil
}
return self.GetHeader(hash)
}
// GetBody retrieves a block body (transactions, uncles and total difficulty)
// from the database by hash, caching it if found. The resion for the peculiar
// pointer-to-slice return type is to differentiate between empty and inexistent
// bodies.
func (self *ChainManager) GetBody(hash common.Hash) (*[]*types.Transaction, *[]*types.Header) {
// Short circuit if the body's already in the cache, retrieve otherwise
if cached, ok := self.bodyCache.Get(hash); ok {
body := cached.(*storageBody)
return &body.Transactions, &body.Uncles
}
transactions, uncles, td := GetBodyByHash(self.chainDb, hash)
if td == nil {
return nil, nil
}
// Cache the found body for next time and return
self.bodyCache.Add(hash, &storageBody{
Transactions: transactions,
Uncles: uncles,
})
return &transactions, &uncles
}
// GetBodyRLP retrieves a block body in RLP encoding from the database by hash,
// caching it if found.
func (self *ChainManager) GetBodyRLP(hash common.Hash) []byte {
// Short circuit if the body's already in the cache, retrieve otherwise
if cached, ok := self.bodyRLPCache.Get(hash); ok {
return cached.([]byte)
}
body, td := GetBodyRLPByHash(self.chainDb, hash)
if td == nil {
return nil
}
// Cache the found body for next time and return
self.bodyRLPCache.Add(hash, body)
return body
}
// HasBlock checks if a block is fully present in the database or not, caching
// it if present.
func (bc *ChainManager) HasBlock(hash common.Hash) bool {
if bc.cache.Contains(hash) {
return true
}
data, _ := bc.chainDb.Get(append(blockHashPre, hash[:]...))
return len(data) != 0
}
func (self *ChainManager) GetBlockHashesFromHash(hash common.Hash, max uint64) (chain []common.Hash) {
block := self.GetBlock(hash)
if block == nil {
return
}
// XXX Could be optimised by using a different database which only holds hashes (i.e., linked list)
for i := uint64(0); i < max; i++ {
block = self.GetBlock(block.ParentHash())
if block == nil {
break
}
chain = append(chain, block.Hash())
if block.Number().Cmp(common.Big0) <= 0 {
break
}
}
return
return bc.GetBlock(hash) != nil
}
// GetBlock retrieves a block from the database by hash, caching it if found.
func (self *ChainManager) GetBlock(hash common.Hash) *types.Block {
if block, ok := self.cache.Get(hash); ok {
// Short circuit if the block's already in the cache, retrieve otherwise
if block, ok := self.blockCache.Get(hash); ok {
return block.(*types.Block)
}
block := GetBlockByHash(self.chainDb, hash)
if block == nil {
return nil
}
// Add the block to the cache
self.cache.Add(hash, (*types.Block)(block))
return (*types.Block)(block)
// Cache the found block for next time and return
self.blockCache.Add(block.Hash(), block)
return block
}
func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block {
self.mu.RLock()
defer self.mu.RUnlock()
return self.getBlockByNumber(num)
// GetBlockByNumber retrieves a block from the database by number, caching it
// (associated with its hash) if found.
func (self *ChainManager) GetBlockByNumber(number uint64) *types.Block {
hash := GetHashByNumber(self.chainDb, number)
if hash == (common.Hash{}) {
return nil
}
return self.GetBlock(hash)
}
// GetBlockHashesFromHash retrieves a number of block hashes starting at a given
// hash, fetching towards the genesis block.
func (self *ChainManager) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash {
// Get the origin header from which to fetch
header := self.GetHeader(hash)
if header == nil {
return nil
}
// Iterate the headers until enough is collected or the genesis reached
chain := make([]common.Hash, 0, max)
for i := uint64(0); i < max; i++ {
if header = self.GetHeader(header.ParentHash); header == nil {
break
}
chain = append(chain, header.Hash())
if header.Number.Cmp(common.Big0) <= 0 {
break
}
}
return chain
}
// [deprecated by eth/62]
// GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors.
func (self *ChainManager) GetBlocksFromHash(hash common.Hash, n int) (blocks []*types.Block) {
for i := 0; i < n; i++ {
@@ -427,11 +476,6 @@ func (self *ChainManager) GetBlocksFromHash(hash common.Hash, n int) (blocks []*
return
}
// non blocking version
func (self *ChainManager) getBlockByNumber(num uint64) *types.Block {
return GetBlockByNumber(self.chainDb, num)
}
func (self *ChainManager) GetUnclesInChain(block *types.Block, length int) (uncles []*types.Header) {
for i := 0; block != nil && i < length; i++ {
uncles = append(uncles, block.Uncles()...)

5
core/chain_manager_test.go
View File

@@ -388,7 +388,10 @@ func makeChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block
func chm(genesis *types.Block, db common.Database) *ChainManager {
var eventMux event.TypeMux
bc := &ChainManager{chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: FakePow{}}
bc.cache, _ = lru.New(100)
bc.headerCache, _ = lru.New(100)
bc.bodyCache, _ = lru.New(100)
bc.bodyRLPCache, _ = lru.New(100)
bc.blockCache, _ = lru.New(100)
bc.futureBlocks, _ = lru.New(100)
bc.processor = bproc{}
bc.ResetWithGenesisBlock(genesis)

258
core/chain_util.go
View File

@@ -19,7 +19,6 @@ package core
import (
"bytes"
"math/big"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
@@ -30,9 +29,14 @@ import (
)
var (
blockHashPre = []byte("block-hash-")
headKey = []byte("LastBlock")
headerHashPre = []byte("header-hash-")
bodyHashPre = []byte("body-hash-")
blockNumPre = []byte("block-num-")
ExpDiffPeriod = big.NewInt(100000)
blockHashPre = []byte("block-hash-") // [deprecated by eth/63]
)
// CalcDifficulty is the difficulty adjustment algorithm. It returns
@@ -112,8 +116,204 @@ func CalcGasLimit(parent *types.Block) *big.Int {
return gl
}
// GetBlockByHash returns the block corresponding to the hash or nil if not found
// storageBody is the block body encoding used for the database.
type storageBody struct {
Transactions []*types.Transaction
Uncles []*types.Header
}
// GetHashByNumber retrieves a hash assigned to a canonical block number.
func GetHashByNumber(db common.Database, number uint64) common.Hash {
data, _ := db.Get(append(blockNumPre, big.NewInt(int64(number)).Bytes()...))
if len(data) == 0 {
return common.Hash{}
}
return common.BytesToHash(data)
}
// GetHeadHash retrieves the hash of the current canonical head block.
func GetHeadHash(db common.Database) common.Hash {
data, _ := db.Get(headKey)
if len(data) == 0 {
return common.Hash{}
}
return common.BytesToHash(data)
}
// GetHeaderRLPByHash retrieves a block header in its raw RLP database encoding,
// or nil if the header's not found.
func GetHeaderRLPByHash(db common.Database, hash common.Hash) []byte {
data, _ := db.Get(append(headerHashPre, hash[:]...))
return data
}
// GetHeaderByHash retrieves the block header corresponding to the hash, nil if
// none found.
func GetHeaderByHash(db common.Database, hash common.Hash) *types.Header {
data := GetHeaderRLPByHash(db, hash)
if len(data) == 0 {
return nil
}
header := new(types.Header)
if err := rlp.Decode(bytes.NewReader(data), header); err != nil {
glog.V(logger.Error).Infof("invalid block header RLP for hash %x: %v", hash, err)
return nil
}
return header
}
// GetBodyRLPByHash retrieves the block body (transactions and uncles) in RLP
// encoding, and the associated total difficulty.
func GetBodyRLPByHash(db common.Database, hash common.Hash) ([]byte, *big.Int) {
combo, _ := db.Get(append(bodyHashPre, hash[:]...))
if len(combo) == 0 {
return nil, nil
}
buffer := bytes.NewBuffer(combo)
td := new(big.Int)
if err := rlp.Decode(buffer, td); err != nil {
glog.V(logger.Error).Infof("invalid block td RLP for hash %x: %v", hash, err)
return nil, nil
}
return buffer.Bytes(), td
}
// GetBodyByHash retrieves the block body (transactons, uncles, total difficulty)
// corresponding to the hash, nils if none found.
func GetBodyByHash(db common.Database, hash common.Hash) ([]*types.Transaction, []*types.Header, *big.Int) {
data, td := GetBodyRLPByHash(db, hash)
if len(data) == 0 || td == nil {
return nil, nil, nil
}
body := new(storageBody)
if err := rlp.Decode(bytes.NewReader(data), body); err != nil {
glog.V(logger.Error).Infof("invalid block body RLP for hash %x: %v", hash, err)
return nil, nil, nil
}
return body.Transactions, body.Uncles, td
}
// GetBlockByHash retrieves an entire block corresponding to the hash, assembling
// it back from the stored header and body.
func GetBlockByHash(db common.Database, hash common.Hash) *types.Block {
// Retrieve the block header and body contents
header := GetHeaderByHash(db, hash)
if header == nil {
return nil
}
transactions, uncles, td := GetBodyByHash(db, hash)
if td == nil {
return nil
}
// Reassemble the block and return
block := types.NewBlockWithHeader(header).WithBody(transactions, uncles)
block.Td = td
return block
}
// GetBlockByNumber returns the canonical block by number or nil if not found.
func GetBlockByNumber(db common.Database, number uint64) *types.Block {
key, _ := db.Get(append(blockNumPre, big.NewInt(int64(number)).Bytes()...))
if len(key) == 0 {
return nil
}
return GetBlockByHash(db, common.BytesToHash(key))
}
// WriteCanonNumber stores the canonical hash for the given block number.
func WriteCanonNumber(db common.Database, hash common.Hash, number uint64) error {
key := append(blockNumPre, big.NewInt(int64(number)).Bytes()...)
if err := db.Put(key, hash.Bytes()); err != nil {
glog.Fatalf("failed to store number to hash mapping into database: %v", err)
return err
}
return nil
}
// WriteHead updates the head block of the chain database.
func WriteHead(db common.Database, block *types.Block) error {
if err := WriteCanonNumber(db, block.Hash(), block.NumberU64()); err != nil {
glog.Fatalf("failed to store canonical number into database: %v", err)
return err
}
if err := db.Put(headKey, block.Hash().Bytes()); err != nil {
glog.Fatalf("failed to store last block into database: %v", err)
return err
}
return nil
}
// WriteHeader serializes a block header into the database.
func WriteHeader(db common.Database, header *types.Header) error {
data, err := rlp.EncodeToBytes(header)
if err != nil {
return err
}
key := append(headerHashPre, header.Hash().Bytes()...)
if err := db.Put(key, data); err != nil {
glog.Fatalf("failed to store header into database: %v", err)
return err
}
glog.V(logger.Debug).Infof("stored header #%v [%x…]", header.Number, header.Hash().Bytes()[:4])
return nil
}
// WriteBody serializes the body of a block into the database.
func WriteBody(db common.Database, block *types.Block) error {
body, err := rlp.EncodeToBytes(&storageBody{block.Transactions(), block.Uncles()})
if err != nil {
return err
}
td, err := rlp.EncodeToBytes(block.Td)
if err != nil {
return err
}
key := append(bodyHashPre, block.Hash().Bytes()...)
if err := db.Put(key, append(td, body...)); err != nil {
glog.Fatalf("failed to store block body into database: %v", err)
return err
}
glog.V(logger.Debug).Infof("stored block body #%v [%x…]", block.Number, block.Hash().Bytes()[:4])
return nil
}
// WriteBlock serializes a block into the database, header and body separately.
func WriteBlock(db common.Database, block *types.Block) error {
// Store the body first to retain database consistency
if err := WriteBody(db, block); err != nil {
return err
}
// Store the header too, signaling full block ownership
if err := WriteHeader(db, block.Header()); err != nil {
return err
}
return nil
}
// DeleteHeader removes all block header data associated with a hash.
func DeleteHeader(db common.Database, hash common.Hash) {
db.Delete(append(headerHashPre, hash.Bytes()...))
}
// DeleteBody removes all block body data associated with a hash.
func DeleteBody(db common.Database, hash common.Hash) {
db.Delete(append(bodyHashPre, hash.Bytes()...))
}
// DeleteBlock removes all block data associated with a hash.
func DeleteBlock(db common.Database, hash common.Hash) {
DeleteHeader(db, hash)
DeleteBody(db, hash)
}
// [deprecated by eth/63]
// GetBlockByHashOld returns the old combined block corresponding to the hash
// or nil if not found. This method is only used by the upgrade mechanism to
// access the old combined block representation. It will be dropped after the
// network transitions to eth/63.
func GetBlockByHashOld(db common.Database, hash common.Hash) *types.Block {
data, _ := db.Get(append(blockHashPre, hash[:]...))
if len(data) == 0 {
return nil
@@ -125,55 +325,3 @@ func GetBlockByHash(db common.Database, hash common.Hash) *types.Block {
}
return (*types.Block)(&block)
}
// GetBlockByHash returns the canonical block by number or nil if not found
func GetBlockByNumber(db common.Database, number uint64) *types.Block {
key, _ := db.Get(append(blockNumPre, big.NewInt(int64(number)).Bytes()...))
if len(key) == 0 {
return nil
}
return GetBlockByHash(db, common.BytesToHash(key))
}
// WriteCanonNumber writes the canonical hash for the given block
func WriteCanonNumber(db common.Database, block *types.Block) error {
key := append(blockNumPre, block.Number().Bytes()...)
err := db.Put(key, block.Hash().Bytes())
if err != nil {
return err
}
return nil
}
// WriteHead force writes the current head
func WriteHead(db common.Database, block *types.Block) error {
err := WriteCanonNumber(db, block)
if err != nil {
return err
}
err = db.Put([]byte("LastBlock"), block.Hash().Bytes())
if err != nil {
return err
}
return nil
}
// WriteBlock writes a block to the database
func WriteBlock(db common.Database, block *types.Block) error {
tstart := time.Now()
enc, _ := rlp.EncodeToBytes((*types.StorageBlock)(block))
key := append(blockHashPre, block.Hash().Bytes()...)
err := db.Put(key, enc)
if err != nil {
glog.Fatal("db write fail:", err)
return err
}
if glog.V(logger.Debug) {
glog.Infof("wrote block #%v %s. Took %v\n", block.Number(), common.PP(block.Hash().Bytes()), time.Since(tstart))
}
return nil
}

2
core/genesis.go
View File

@@ -86,7 +86,7 @@ func WriteGenesisBlock(chainDb common.Database, reader io.Reader) (*types.Block,
if block := GetBlockByHash(chainDb, block.Hash()); block != nil {
glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number")
err := WriteCanonNumber(chainDb, block)
err := WriteCanonNumber(chainDb, block.Hash(), block.NumberU64())
if err != nil {
return nil, err
}

4
core/types/block.go
View File

@@ -135,6 +135,7 @@ type Block struct {
ReceivedAt time.Time
}
// [deprecated by eth/63]
// StorageBlock defines the RLP encoding of a Block stored in the
// state database. The StorageBlock encoding contains fields that
// would otherwise need to be recomputed.
@@ -147,6 +148,7 @@ type extblock struct {
Uncles []*Header
}
// [deprecated by eth/63]
// "storage" block encoding. used for database.
type storageblock struct {
Header *Header
@@ -268,6 +270,7 @@ func (b *Block) EncodeRLP(w io.Writer) error {
})
}
// [deprecated by eth/63]
func (b *StorageBlock) DecodeRLP(s *rlp.Stream) error {
var sb storageblock
if err := s.Decode(&sb); err != nil {
@@ -277,6 +280,7 @@ func (b *StorageBlock) DecodeRLP(s *rlp.Stream) error {
return nil
}
// [deprecated by eth/63]
func (b *StorageBlock) EncodeRLP(w io.Writer) error {
return rlp.Encode(w, storageblock{
Header: b.header,

106
eth/backend.go
View File

@@ -18,6 +18,7 @@
package eth
import (
"bytes"
"crypto/ecdsa"
"encoding/json"
"fmt"
@@ -269,11 +270,7 @@ func New(config *Config) (*Ethereum, error) {
newdb = func(path string) (common.Database, error) { return ethdb.NewLDBDatabase(path, config.DatabaseCache) }
}
// attempt to merge database together, upgrading from an old version
if err := mergeDatabases(config.DataDir, newdb); err != nil {
return nil, err
}
// Open the chain database and perform any upgrades needed
chainDb, err := newdb(filepath.Join(config.DataDir, "chaindata"))
if err != nil {
return nil, fmt.Errorf("blockchain db err: %v", err)
@@ -281,6 +278,10 @@ func New(config *Config) (*Ethereum, error) {
if db, ok := chainDb.(*ethdb.LDBDatabase); ok {
db.Meter("eth/db/chaindata/")
}
if err := upgradeChainDatabase(chainDb); err != nil {
return nil, err
}
dappDb, err := newdb(filepath.Join(config.DataDir, "dapp"))
if err != nil {
return nil, fmt.Errorf("dapp db err: %v", err)
@@ -721,74 +722,55 @@ func saveBlockchainVersion(db common.Database, bcVersion int) {
}
}
// mergeDatabases when required merge old database layout to one single database
func mergeDatabases(datadir string, newdb func(path string) (common.Database, error)) error {
// Check if already upgraded
data := filepath.Join(datadir, "chaindata")
if _, err := os.Stat(data); !os.IsNotExist(err) {
// upgradeChainDatabase ensures that the chain database stores block split into
// separate header and body entries.
func upgradeChainDatabase(db common.Database) error {
// Short circuit if the head block is stored already as separate header and body
data, err := db.Get([]byte("LastBlock"))
if err != nil {
return nil
}
// make sure it's not just a clean path
chainPath := filepath.Join(datadir, "blockchain")
if _, err := os.Stat(chainPath); os.IsNotExist(err) {
head := common.BytesToHash(data)
if block := core.GetBlockByHashOld(db, head); block == nil {
return nil
}
glog.Infoln("Database upgrade required. Upgrading...")
// At least some of the database is still the old format, upgrade (skip the head block!)
glog.V(logger.Info).Info("Old database detected, upgrading...")
database, err := newdb(data)
if err != nil {
return fmt.Errorf("creating data db err: %v", err)
if db, ok := db.(*ethdb.LDBDatabase); ok {
blockPrefix := []byte("block-hash-")
for it := db.NewIterator(); it.Next(); {
// Skip anything other than a combined block
if !bytes.HasPrefix(it.Key(), blockPrefix) {
continue
}
defer database.Close()
// Skip the head block (merge last to signal upgrade completion)
if bytes.HasSuffix(it.Key(), head.Bytes()) {
continue
}
// Load the block, split and serialize (order!)
block := core.GetBlockByHashOld(db, common.BytesToHash(bytes.TrimPrefix(it.Key(), blockPrefix)))
// Migrate blocks
chainDb, err := newdb(chainPath)
if err != nil {
return fmt.Errorf("state db err: %v", err)
if err := core.WriteBody(db, block); err != nil {
return err
}
defer chainDb.Close()
if err := core.WriteHeader(db, block.Header()); err != nil {
return err
}
if err := db.Delete(it.Key()); err != nil {
return err
}
}
// Lastly, upgrade the head block, disabling the upgrade mechanism
current := core.GetBlockByHashOld(db, head)
if chain, ok := chainDb.(*ethdb.LDBDatabase); ok {
glog.Infoln("Merging blockchain database...")
it := chain.NewIterator()
for it.Next() {
database.Put(it.Key(), it.Value())
if err := core.WriteBody(db, current); err != nil {
return err
}
it.Release()
if err := core.WriteHeader(db, current.Header()); err != nil {
return err
}
// Migrate state
stateDb, err := newdb(filepath.Join(datadir, "state"))
if err != nil {
return fmt.Errorf("state db err: %v", err)
}
defer stateDb.Close()
if state, ok := stateDb.(*ethdb.LDBDatabase); ok {
glog.Infoln("Merging state database...")
it := state.NewIterator()
for it.Next() {
database.Put(it.Key(), it.Value())
}
it.Release()
}
// Migrate transaction / receipts
extraDb, err := newdb(filepath.Join(datadir, "extra"))
if err != nil {
return fmt.Errorf("state db err: %v", err)
}
defer extraDb.Close()
if extra, ok := extraDb.(*ethdb.LDBDatabase); ok {
glog.Infoln("Merging transaction database...")
it := extra.NewIterator()
for it.Next() {
database.Put(it.Key(), it.Value())
}
it.Release()
}
return nil
}

43
eth/handler.go
View File

@@ -345,33 +345,33 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
if err := msg.Decode(&query); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
// Gather blocks until the fetch or network limits is reached
// Gather headers until the fetch or network limits is reached
var (
bytes common.StorageSize
headers []*types.Header
unknown bool
)
for !unknown && len(headers) < int(query.Amount) && bytes < softResponseLimit && len(headers) < downloader.MaxHeaderFetch {
// Retrieve the next block satisfying the query
var origin *types.Block
// Retrieve the next header satisfying the query
var origin *types.Header
if query.Origin.Hash != (common.Hash{}) {
origin = pm.chainman.GetBlock(query.Origin.Hash)
origin = pm.chainman.GetHeader(query.Origin.Hash)
} else {
origin = pm.chainman.GetBlockByNumber(query.Origin.Number)
origin = pm.chainman.GetHeaderByNumber(query.Origin.Number)
}
if origin == nil {
break
}
headers = append(headers, origin.Header())
bytes += origin.Size()
headers = append(headers, origin)
bytes += 500 // Approximate, should be good enough estimate
// Advance to the next block of the query
// Advance to the next header of the query
switch {
case query.Origin.Hash != (common.Hash{}) && query.Reverse:
// Hash based traversal towards the genesis block
for i := 0; i < int(query.Skip)+1; i++ {
if block := pm.chainman.GetBlock(query.Origin.Hash); block != nil {
query.Origin.Hash = block.ParentHash()
if header := pm.chainman.GetHeader(query.Origin.Hash); header != nil {
query.Origin.Hash = header.ParentHash
} else {
unknown = true
break
@@ -379,9 +379,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
}
case query.Origin.Hash != (common.Hash{}) && !query.Reverse:
// Hash based traversal towards the leaf block
if block := pm.chainman.GetBlockByNumber(origin.NumberU64() + query.Skip + 1); block != nil {
if pm.chainman.GetBlockHashesFromHash(block.Hash(), query.Skip+1)[query.Skip] == query.Origin.Hash {
query.Origin.Hash = block.Hash()
if header := pm.chainman.GetHeaderByNumber(origin.Number.Uint64() + query.Skip + 1); header != nil {
if pm.chainman.GetBlockHashesFromHash(header.Hash(), query.Skip+1)[query.Skip] == query.Origin.Hash {
query.Origin.Hash = header.Hash()
} else {
unknown = true
}
@@ -452,23 +452,24 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
// Gather blocks until the fetch or network limits is reached
var (
hash common.Hash
bytes common.StorageSize
bodies []*blockBody
bytes int
bodies []*blockBodyRLP
)
for bytes < softResponseLimit && len(bodies) < downloader.MaxBlockFetch {
//Retrieve the hash of the next block
// Retrieve the hash of the next block
if err := msgStream.Decode(&hash); err == rlp.EOL {
break
} else if err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Retrieve the requested block, stopping if enough was found
if block := pm.chainman.GetBlock(hash); block != nil {
bodies = append(bodies, &blockBody{Transactions: block.Transactions(), Uncles: block.Uncles()})
bytes += block.Size()
// Retrieve the requested block body, stopping if enough was found
if data := pm.chainman.GetBodyRLP(hash); len(data) != 0 {
body := blockBodyRLP(data)
bodies = append(bodies, &body)
bytes += len(body)
}
}
return p.SendBlockBodies(bodies)
return p.SendBlockBodiesRLP(bodies)
case p.version >= eth63 && msg.Code == GetNodeDataMsg:
// Decode the retrieval message

6
eth/peer.go
View File

@@ -184,6 +184,12 @@ func (p *peer) SendBlockBodies(bodies []*blockBody) error {
return p2p.Send(p.rw, BlockBodiesMsg, blockBodiesData(bodies))
}
// SendBlockBodiesRLP sends a batch of block contents to the remote peer from
// an already RLP encoded format.
func (p *peer) SendBlockBodiesRLP(bodies []*blockBodyRLP) error {
return p2p.Send(p.rw, BlockBodiesMsg, blockBodiesRLPData(bodies))
}
// SendNodeData sends a batch of arbitrary internal data, corresponding to the
// hashes requested.
func (p *peer) SendNodeData(data [][]byte) error {

16
eth/protocol.go
View File

@@ -213,6 +213,22 @@ type blockBody struct {
// blockBodiesData is the network packet for block content distribution.
type blockBodiesData []*blockBody
// blockBodyRLP represents the RLP encoded data content of a single block.
type blockBodyRLP []byte
// EncodeRLP is a specialized encoder for a block body to pass the already
// encoded body RLPs from the database on, without double encoding.
func (b *blockBodyRLP) EncodeRLP(w io.Writer) error {
if _, err := w.Write([]byte(*b)); err != nil {
return err
}
return nil
}
// blockBodiesRLPData is the network packet for block content distribution
// based on original RLP formatting (i.e. skip the db-decode/proto-encode).
type blockBodiesRLPData []*blockBodyRLP
// nodeDataData is the network response packet for a node data retrieval.
type nodeDataData []struct {
Value []byte