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core, eth, trie: fix data races and merge/review issues

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This commit is contained in:
Péter Szilágyi 2015-10-13 12:04:25 +03:00
parent aa0538db0b
commit 5b0ee8ec30
27 changed files with 765 additions and 465 deletions
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10
core/block_processor.go
View File

@ -195,14 +195,16 @@ func (sm *BlockProcessor) Process(block *types.Block) (logs vm.Logs, receipts ty
defer sm.mutex.Unlock()
if sm.bc.HasBlock(block.Hash()) {
if _, err := state.New(block.Root(), sm.chainDb); err == nil {
return nil, nil, &KnownBlockError{block.Number(), block.Hash()}
}
if !sm.bc.HasBlock(block.ParentHash()) {
return nil, nil, ParentError(block.ParentHash())
}
parent := sm.bc.GetBlock(block.ParentHash())
if parent := sm.bc.GetBlock(block.ParentHash()); parent != nil {
if _, err := state.New(parent.Root(), sm.chainDb); err == nil {
return sm.processWithParent(block, parent)
}
}
return nil, nil, ParentError(block.ParentHash())
}
func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs vm.Logs, receipts types.Receipts, err error) {

69
core/blockchain.go
View File

@ -18,11 +18,13 @@
package core
import (
crand "crypto/rand"
"errors"
"fmt"
"io"
"math"
"math/big"
"math/rand"
mrand "math/rand"
"runtime"
"sync"
"sync/atomic"
@ -90,6 +92,7 @@ type BlockChain struct {
wg sync.WaitGroup
pow pow.PoW
rand *mrand.Rand
}
func NewBlockChain(chainDb ethdb.Database, pow pow.PoW, mux *event.TypeMux) (*BlockChain, error) {
@ -112,6 +115,12 @@ func NewBlockChain(chainDb ethdb.Database, pow pow.PoW, mux *event.TypeMux) (*Bl
futureBlocks: futureBlocks,
pow: pow,
}
// Seed a fast but crypto originating random generator
seed, err := crand.Int(crand.Reader, big.NewInt(math.MaxInt64))
if err != nil {
return nil, err
}
bc.rand = mrand.New(mrand.NewSource(seed.Int64()))
bc.genesisBlock = bc.GetBlockByNumber(0)
if bc.genesisBlock == nil {
@ -178,21 +187,21 @@ func (self *BlockChain) loadLastState() error {
fastTd := self.GetTd(self.currentFastBlock.Hash())
glog.V(logger.Info).Infof("Last header: #%d [%x…] TD=%v", self.currentHeader.Number, self.currentHeader.Hash().Bytes()[:4], headerTd)
glog.V(logger.Info).Infof("Fast block: #%d [%x…] TD=%v", self.currentFastBlock.Number(), self.currentFastBlock.Hash().Bytes()[:4], fastTd)
glog.V(logger.Info).Infof("Last block: #%d [%x…] TD=%v", self.currentBlock.Number(), self.currentBlock.Hash().Bytes()[:4], blockTd)
glog.V(logger.Info).Infof("Fast block: #%d [%x…] TD=%v", self.currentFastBlock.Number(), self.currentFastBlock.Hash().Bytes()[:4], fastTd)
return nil
}
// SetHead rewind the local chain to a new head entity. In the case of headers,
// everything above the new head will be deleted and the new one set. In the case
// of blocks though, the head may be further rewound if block bodies are missing
// (non-archive nodes after a fast sync).
// SetHead rewinds the local chain to a new head. In the case of headers, everything
// above the new head will be deleted and the new one set. In the case of blocks
// though, the head may be further rewound if block bodies are missing (non-archive
// nodes after a fast sync).
func (bc *BlockChain) SetHead(head uint64) {
bc.mu.Lock()
defer bc.mu.Unlock()
// Figure out the highest known canonical assignment
// Figure out the highest known canonical headers and/or blocks
height := uint64(0)
if bc.currentHeader != nil {
if hh := bc.currentHeader.Number.Uint64(); hh > height {
@ -266,7 +275,7 @@ func (bc *BlockChain) SetHead(head uint64) {
// FastSyncCommitHead sets the current head block to the one defined by the hash
// irrelevant what the chain contents were prior.
func (self *BlockChain) FastSyncCommitHead(hash common.Hash) error {
// Make sure that both the block as well at it's state trie exists
// Make sure that both the block as well at its state trie exists
block := self.GetBlock(hash)
if block == nil {
return fmt.Errorf("non existent block [%x…]", hash[:4])
@ -298,7 +307,7 @@ func (self *BlockChain) LastBlockHash() common.Hash {
}
// CurrentHeader retrieves the current head header of the canonical chain. The
// header is retrieved from the chain manager's internal cache.
// header is retrieved from the blockchain's internal cache.
func (self *BlockChain) CurrentHeader() *types.Header {
self.mu.RLock()
defer self.mu.RUnlock()
@ -307,7 +316,7 @@ func (self *BlockChain) CurrentHeader() *types.Header {
}
// CurrentBlock retrieves the current head block of the canonical chain. The
// block is retrieved from the chain manager's internal cache.
// block is retrieved from the blockchain's internal cache.
func (self *BlockChain) CurrentBlock() *types.Block {
self.mu.RLock()
defer self.mu.RUnlock()
@ -316,7 +325,7 @@ func (self *BlockChain) CurrentBlock() *types.Block {
}
// CurrentFastBlock retrieves the current fast-sync head block of the canonical
// chain. The block is retrieved from the chain manager's internal cache.
// chain. The block is retrieved from the blockchain's internal cache.
func (self *BlockChain) CurrentFastBlock() *types.Block {
self.mu.RLock()
defer self.mu.RUnlock()
@ -353,7 +362,7 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) {
bc.mu.Lock()
defer bc.mu.Unlock()
// Prepare the genesis block and reinitialize the chain
// Prepare the genesis block and reinitialise the chain
if err := WriteTd(bc.chainDb, genesis.Hash(), genesis.Difficulty()); err != nil {
glog.Fatalf("failed to write genesis block TD: %v", err)
}
@ -403,7 +412,7 @@ func (self *BlockChain) ExportN(w io.Writer, first uint64, last uint64) error {
// insert injects a new head block into the current block chain. This method
// assumes that the block is indeed a true head. It will also reset the head
// header and the head fast sync block to this very same block to prevent them
// from diverging on a different header chain.
// from pointing to a possibly old canonical chain (i.e. side chain by now).
//
// Note, this function assumes that the `mu` mutex is held!
func (bc *BlockChain) insert(block *types.Block) {
@ -625,10 +634,10 @@ const (
// writeHeader writes a header into the local chain, given that its parent is
// already known. If the total difficulty of the newly inserted header becomes
// greater than the old known TD, the canonical chain is re-routed.
// greater than the current known TD, the canonical chain is re-routed.
//
// Note: This method is not concurrent-safe with inserting blocks simultaneously
// into the chain, as side effects caused by reorganizations cannot be emulated
// into the chain, as side effects caused by reorganisations cannot be emulated
// without the real blocks. Hence, writing headers directly should only be done
// in two scenarios: pure-header mode of operation (light clients), or properly
// separated header/block phases (non-archive clients).
@ -678,10 +687,9 @@ func (self *BlockChain) writeHeader(header *types.Header) error {
return nil
}
// InsertHeaderChain will attempt to insert the given header chain in to the
// local chain, possibly creating a fork. If an error is returned, it will
// return the index number of the failing header as well an error describing
// what went wrong.
// InsertHeaderChain attempts to insert the given header chain in to the local
// chain, possibly creating a reorg. If an error is returned, it will return the
// index number of the failing header as well an error describing what went wrong.
//
// The verify parameter can be used to fine tune whether nonce verification
// should be done or not. The reason behind the optional check is because some
@ -702,7 +710,7 @@ func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int)
// Generate the list of headers that should be POW verified
verify := make([]bool, len(chain))
for i := 0; i < len(verify)/checkFreq; i++ {
index := i*checkFreq + rand.Intn(checkFreq)
index := i*checkFreq + self.rand.Intn(checkFreq)
if index >= len(verify) {
index = len(verify) - 1
}
@ -766,10 +774,6 @@ func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int)
pending.Wait()
// If anything failed, report
if atomic.LoadInt32(&self.procInterrupt) == 1 {
glog.V(logger.Debug).Infoln("premature abort during receipt chain processing")
return 0, nil
}
if failed > 0 {
for i, err := range errs {
if err != nil {
@ -807,6 +811,9 @@ func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int)
// Rollback is designed to remove a chain of links from the database that aren't
// certain enough to be valid.
func (self *BlockChain) Rollback(chain []common.Hash) {
self.mu.Lock()
defer self.mu.Unlock()
for i := len(chain) - 1; i >= 0; i-- {
hash := chain[i]
@ -905,6 +912,12 @@ func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain
glog.Fatal(errs[index])
return
}
if err := WriteMipmapBloom(self.chainDb, block.NumberU64(), receipts); err != nil {
errs[index] = fmt.Errorf("failed to write log blooms: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
atomic.AddInt32(&stats.processed, 1)
}
}
@ -920,10 +933,6 @@ func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain
pending.Wait()
// If anything failed, report
if atomic.LoadInt32(&self.procInterrupt) == 1 {
glog.V(logger.Debug).Infoln("premature abort during receipt chain processing")
return 0, nil
}
if failed > 0 {
for i, err := range errs {
if err != nil {
@ -931,6 +940,10 @@ func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain
}
}
}
if atomic.LoadInt32(&self.procInterrupt) == 1 {
glog.V(logger.Debug).Infoln("premature abort during receipt chain processing")
return 0, nil
}
// Update the head fast sync block if better
self.mu.Lock()
head := blockChain[len(errs)-1]

2
core/blockchain_test.go
View File

@ -452,7 +452,7 @@ func makeBlockChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.B
func chm(genesis *types.Block, db ethdb.Database) *BlockChain {
var eventMux event.TypeMux
bc := &BlockChain{chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: FakePow{}}
bc := &BlockChain{chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: FakePow{}, rand: rand.New(rand.NewSource(0))}
bc.headerCache, _ = lru.New(100)
bc.bodyCache, _ = lru.New(100)
bc.bodyRLPCache, _ = lru.New(100)

2
core/chain_util.go
View File

@ -394,7 +394,7 @@ func WriteMipmapBloom(db ethdb.Database, number uint64, receipts types.Receipts)
bloomDat, _ := db.Get(key)
bloom := types.BytesToBloom(bloomDat)
for _, receipt := range receipts {
for _, log := range receipt.Logs() {
for _, log := range receipt.Logs {
bloom.Add(log.Address.Big())
}
}

28
core/chain_util_test.go
View File

@ -345,15 +345,15 @@ func TestMipmapBloom(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
receipt1 := new(types.Receipt)
receipt1.SetLogs(vm.Logs{
receipt1.Logs = vm.Logs{
&vm.Log{Address: common.BytesToAddress([]byte("test"))},
&vm.Log{Address: common.BytesToAddress([]byte("address"))},
})
}
receipt2 := new(types.Receipt)
receipt2.SetLogs(vm.Logs{
receipt2.Logs = vm.Logs{
&vm.Log{Address: common.BytesToAddress([]byte("test"))},
&vm.Log{Address: common.BytesToAddress([]byte("address1"))},
})
}
WriteMipmapBloom(db, 1, types.Receipts{receipt1})
WriteMipmapBloom(db, 2, types.Receipts{receipt2})
@ -368,15 +368,15 @@ func TestMipmapBloom(t *testing.T) {
// reset
db, _ = ethdb.NewMemDatabase()
receipt := new(types.Receipt)
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{Address: common.BytesToAddress([]byte("test"))},
})
}
WriteMipmapBloom(db, 999, types.Receipts{receipt1})
receipt = new(types.Receipt)
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{Address: common.BytesToAddress([]byte("test 1"))},
})
}
WriteMipmapBloom(db, 1000, types.Receipts{receipt})
bloom := GetMipmapBloom(db, 1000, 1000)
@ -403,22 +403,22 @@ func TestMipmapChain(t *testing.T) {
defer db.Close()
genesis := WriteGenesisBlockForTesting(db, GenesisAccount{addr, big.NewInt(1000000)})
chain := GenerateChain(genesis, db, 1010, func(i int, gen *BlockGen) {
chain, receipts := GenerateChain(genesis, db, 1010, func(i int, gen *BlockGen) {
var receipts types.Receipts
switch i {
case 1:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{
Address: addr,
Topics: []common.Hash{hash1},
},
})
}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
case 1000:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{&vm.Log{Address: addr2}})
receipt.Logs = vm.Logs{&vm.Log{Address: addr2}}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
@ -431,7 +431,7 @@ func TestMipmapChain(t *testing.T) {
}
WriteMipmapBloom(db, uint64(i+1), receipts)
})
for _, block := range chain {
for i, block := range chain {
WriteBlock(db, block)
if err := WriteCanonicalHash(db, block.Hash(), block.NumberU64()); err != nil {
t.Fatalf("failed to insert block number: %v", err)
@ -439,7 +439,7 @@ func TestMipmapChain(t *testing.T) {
if err := WriteHeadBlockHash(db, block.Hash()); err != nil {
t.Fatalf("failed to insert block number: %v", err)
}
if err := PutBlockReceipts(db, block, block.Receipts()); err != nil {
if err := PutBlockReceipts(db, block.Hash(), receipts[i]); err != nil {
t.Fatal("error writing block receipts:", err)
}
}

1
core/state/sync.go
View File

@ -33,7 +33,6 @@ type StateSync trie.TrieSync
// NewStateSync create a new state trie download scheduler.
func NewStateSync(root common.Hash, database ethdb.Database) *StateSync {
// Pre-declare the result syncer t
var syncer *trie.TrieSync
callback := func(leaf []byte, parent common.Hash) error {

4
core/state/sync_test.go
View File

@ -38,7 +38,7 @@ type testAccount struct {
func makeTestState() (ethdb.Database, common.Hash, []*testAccount) {
// Create an empty state
db, _ := ethdb.NewMemDatabase()
state := New(common.Hash{}, db)
state, _ := New(common.Hash{}, db)
// Fill it with some arbitrary data
accounts := []*testAccount{}
@ -68,7 +68,7 @@ func makeTestState() (ethdb.Database, common.Hash, []*testAccount) {
// checkStateAccounts cross references a reconstructed state with an expected
// account array.
func checkStateAccounts(t *testing.T, db ethdb.Database, root common.Hash, accounts []*testAccount) {
state := New(root, db)
state, _ := New(root, db)
for i, acc := range accounts {
if balance := state.GetBalance(acc.address); balance.Cmp(acc.balance) != 0 {

10
core/types/receipt.go
View File

@ -67,7 +67,7 @@ func (r *Receipt) DecodeRLP(s *rlp.Stream) error {
return nil
}
// RlpEncode implements common.RlpEncode required for SHA derivation.
// RlpEncode implements common.RlpEncode required for SHA3 derivation.
func (r *Receipt) RlpEncode() []byte {
bytes, err := rlp.EncodeToBytes(r)
if err != nil {
@ -82,7 +82,7 @@ func (r *Receipt) String() string {
}
// ReceiptForStorage is a wrapper around a Receipt that flattens and parses the
// entire content of a receipt, opposed to only the consensus fields originally.
// entire content of a receipt, as opposed to only the consensus fields originally.
type ReceiptForStorage Receipt
// EncodeRLP implements rlp.Encoder, and flattens all content fields of a receipt
@ -95,8 +95,8 @@ func (r *ReceiptForStorage) EncodeRLP(w io.Writer) error {
return rlp.Encode(w, []interface{}{r.PostState, r.CumulativeGasUsed, r.Bloom, r.TxHash, r.ContractAddress, logs, r.GasUsed})
}
// DecodeRLP implements rlp.Decoder, and loads the consensus fields of a receipt
// from an RLP stream.
// DecodeRLP implements rlp.Decoder, and loads both consensus and implementation
// fields of a receipt from an RLP stream.
func (r *ReceiptForStorage) DecodeRLP(s *rlp.Stream) error {
var receipt struct {
PostState []byte
@ -125,7 +125,7 @@ func (r *ReceiptForStorage) DecodeRLP(s *rlp.Stream) error {
// Receipts is a wrapper around a Receipt array to implement types.DerivableList.
type Receipts []*Receipt
// RlpEncode implements common.RlpEncode required for SHA derivation.
// RlpEncode implements common.RlpEncode required for SHA3 derivation.
func (r Receipts) RlpEncode() []byte {
bytes, err := rlp.EncodeToBytes(r)
if err != nil {

2
core/vm/log.go
View File

@ -66,6 +66,6 @@ func (l *Log) String() string {
type Logs []*Log
// LogForStorage is a wrapper around a Log that flattens and parses the entire
// content of a log, opposed to only the consensus fields originally (by hiding
// content of a log, as opposed to only the consensus fields originally (by hiding
// the rlp interface methods).
type LogForStorage Log

1
eth/backend.go
View File

@ -391,7 +391,6 @@ func New(config *Config) (*Ethereum, error) {
if err == core.ErrNoGenesis {
return nil, fmt.Errorf(`Genesis block not found. Please supply a genesis block with the "--genesis /path/to/file" argument`)
}
return nil, err
}
newPool := core.NewTxPool(eth.EventMux(), eth.blockchain.State, eth.blockchain.GasLimit)

10
eth/backend_test.go
View File

@ -16,17 +16,17 @@ func TestMipmapUpgrade(t *testing.T) {
addr := common.BytesToAddress([]byte("jeff"))
genesis := core.WriteGenesisBlockForTesting(db)
chain := core.GenerateChain(genesis, db, 10, func(i int, gen *core.BlockGen) {
chain, receipts := core.GenerateChain(genesis, db, 10, func(i int, gen *core.BlockGen) {
var receipts types.Receipts
switch i {
case 1:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{&vm.Log{Address: addr}})
receipt.Logs = vm.Logs{&vm.Log{Address: addr}}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
case 2:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{&vm.Log{Address: addr}})
receipt.Logs = vm.Logs{&vm.Log{Address: addr}}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
}
@ -37,7 +37,7 @@ func TestMipmapUpgrade(t *testing.T) {
t.Fatal(err)
}
})
for _, block := range chain {
for i, block := range chain {
core.WriteBlock(db, block)
if err := core.WriteCanonicalHash(db, block.Hash(), block.NumberU64()); err != nil {
t.Fatalf("failed to insert block number: %v", err)
@ -45,7 +45,7 @@ func TestMipmapUpgrade(t *testing.T) {
if err := core.WriteHeadBlockHash(db, block.Hash()); err != nil {
t.Fatalf("failed to insert block number: %v", err)
}
if err := core.PutBlockReceipts(db, block, block.Receipts()); err != nil {
if err := core.PutBlockReceipts(db, block.Hash(), receipts[i]); err != nil {
t.Fatal("error writing block receipts:", err)
}
}

183
eth/downloader/downloader.go
View File

@ -18,7 +18,9 @@
package downloader
import (
"crypto/rand"
"errors"
"fmt"
"math"
"math/big"
"strings"
@ -59,9 +61,11 @@ var (
maxQueuedStates = 256 * 1024 // [eth/63] Maximum number of state requests to queue (DOS protection)
maxResultsProcess = 256 // Number of download results to import at once into the chain
headerCheckFrequency = 100 // Verification frequency of the downloaded headers during fast sync
minCheckedHeaders = 2048 // Number of headers to verify fully when approaching the chain head
minFullBlocks = 1024 // Number of blocks to retrieve fully even in fast sync
fsHeaderCheckFrequency = 100 // Verification frequency of the downloaded headers during fast sync
fsHeaderSafetyNet = 2048 // Number of headers to discard in case a chain violation is detected
fsHeaderForceVerify = 24 // Number of headers to verify before and after the pivot to accept it
fsPivotInterval = 512 // Number of headers out of which to randomize the pivot point
fsMinFullBlocks = 1024 // Number of blocks to retrieve fully even in fast sync
)
var (
@ -85,11 +89,13 @@ var (
errCancelHeaderFetch = errors.New("block header download canceled (requested)")
errCancelBodyFetch = errors.New("block body download canceled (requested)")
errCancelReceiptFetch = errors.New("receipt download canceled (requested)")
errCancelStateFetch = errors.New("state data download canceled (requested)")
errNoSyncActive = errors.New("no sync active")
)
type Downloader struct {
mode SyncMode // Synchronisation mode defining the strategies used
mode SyncMode // Synchronisation mode defining the strategy used (per sync cycle)
noFast bool // Flag to disable fast syncing in case of a security error
mux *event.TypeMux // Event multiplexer to announce sync operation events
queue *queue // Scheduler for selecting the hashes to download
@ -150,13 +156,13 @@ type Downloader struct {
}
// New creates a new downloader to fetch hashes and blocks from remote peers.
func New(mode SyncMode, stateDb ethdb.Database, mux *event.TypeMux, hasHeader headerCheckFn, hasBlock blockCheckFn, getHeader headerRetrievalFn,
func New(stateDb ethdb.Database, mux *event.TypeMux, hasHeader headerCheckFn, hasBlock blockCheckFn, getHeader headerRetrievalFn,
getBlock blockRetrievalFn, headHeader headHeaderRetrievalFn, headBlock headBlockRetrievalFn, headFastBlock headFastBlockRetrievalFn,
commitHeadBlock headBlockCommitterFn, getTd tdRetrievalFn, insertHeaders headerChainInsertFn, insertBlocks blockChainInsertFn,
insertReceipts receiptChainInsertFn, rollback chainRollbackFn, dropPeer peerDropFn) *Downloader {
return &Downloader{
mode: mode,
mode: FullSync,
mux: mux,
queue: newQueue(stateDb),
peers: newPeerSet(),
@ -188,19 +194,28 @@ func New(mode SyncMode, stateDb ethdb.Database, mux *event.TypeMux, hasHeader he
}
}
// Boundaries retrieves the synchronisation boundaries, specifically the origin
// block where synchronisation started at (may have failed/suspended) and the
// latest known block which the synchonisation targets.
func (d *Downloader) Boundaries() (uint64, uint64) {
// Progress retrieves the synchronisation boundaries, specifically the origin
// block where synchronisation started at (may have failed/suspended); the block
// or header sync is currently at; and the latest known block which the sync targets.
func (d *Downloader) Progress() (uint64, uint64, uint64) {
d.syncStatsLock.RLock()
defer d.syncStatsLock.RUnlock()
return d.syncStatsChainOrigin, d.syncStatsChainHeight
current := uint64(0)
switch d.mode {
case FullSync:
current = d.headBlock().NumberU64()
case FastSync:
current = d.headFastBlock().NumberU64()
case LightSync:
current = d.headHeader().Number.Uint64()
}
return d.syncStatsChainOrigin, current, d.syncStatsChainHeight
}
// Synchronising returns whether the downloader is currently retrieving blocks.
func (d *Downloader) Synchronising() bool {
return atomic.LoadInt32(&d.synchronising) > 0
return atomic.LoadInt32(&d.synchronising) > 0 || atomic.LoadInt32(&d.processing) > 0
}
// RegisterPeer injects a new download peer into the set of block source to be
@ -233,10 +248,10 @@ func (d *Downloader) UnregisterPeer(id string) error {
// Synchronise tries to sync up our local block chain with a remote peer, both
// adding various sanity checks as well as wrapping it with various log entries.
func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int) {
func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int, mode SyncMode) {
glog.V(logger.Detail).Infof("Attempting synchronisation: %v, head [%x…], TD %v", id, head[:4], td)
switch err := d.synchronise(id, head, td); err {
switch err := d.synchronise(id, head, td, mode); err {
case nil:
glog.V(logger.Detail).Infof("Synchronisation completed")
@ -258,7 +273,7 @@ func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int) {
// synchronise will select the peer and use it for synchronising. If an empty string is given
// it will use the best peer possible and synchronize if it's TD is higher than our own. If any of the
// checks fail an error will be returned. This method is synchronous
func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int) error {
func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int, mode SyncMode) error {
// Mock out the synchonisation if testing
if d.synchroniseMock != nil {
return d.synchroniseMock(id, hash)
@ -298,6 +313,11 @@ func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int) error
d.cancelCh = make(chan struct{})
d.cancelLock.Unlock()
// Set the requested sync mode, unless it's forbidden
d.mode = mode
if d.mode == FastSync && d.noFast {
d.mode = FullSync
}
// Retrieve the origin peer and initiate the downloading process
p := d.peers.Peer(id)
if p == nil {
@ -306,13 +326,6 @@ func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int) error
return d.syncWithPeer(p, hash, td)
}
/*
// Has checks if the downloader knows about a particular hash, meaning that its
// either already downloaded of pending retrieval.
func (d *Downloader) Has(hash common.Hash) bool {
return d.queue.Has(hash)
}
*/
// syncWithPeer starts a block synchronization based on the hash chain from the
// specified peer and head hash.
func (d *Downloader) syncWithPeer(p *peer, hash common.Hash, td *big.Int) (err error) {
@ -387,8 +400,28 @@ func (d *Downloader) syncWithPeer(p *peer, hash common.Hash, td *big.Int) (err e
// Initiate the sync using a concurrent header and content retrieval algorithm
pivot := uint64(0)
if latest > uint64(minFullBlocks) {
pivot = latest - uint64(minFullBlocks)
switch d.mode {
case LightSync:
pivot = latest
case FastSync:
// Calculate the new fast/slow sync pivot point
pivotOffset, err := rand.Int(rand.Reader, big.NewInt(int64(fsPivotInterval)))
if err != nil {
panic(fmt.Sprintf("Failed to access crypto random source: %v", err))
}
if latest > uint64(fsMinFullBlocks)+pivotOffset.Uint64() {
pivot = latest - uint64(fsMinFullBlocks) - pivotOffset.Uint64()
}
// If the point is below the origin, move origin back to ensure state download
if pivot < origin {
if pivot > 0 {
origin = pivot - 1
} else {
origin = 0
}
}
glog.V(logger.Debug).Infof("Fast syncing until pivot block #%d", pivot)
}
d.queue.Prepare(origin+1, d.mode, pivot)
@ -396,7 +429,7 @@ func (d *Downloader) syncWithPeer(p *peer, hash common.Hash, td *big.Int) (err e
d.syncInitHook(origin, latest)
}
errc := make(chan error, 4)
go func() { errc <- d.fetchHeaders(p, td, origin+1, latest) }() // Headers are always retrieved
go func() { errc <- d.fetchHeaders(p, td, origin+1) }() // Headers are always retrieved
go func() { errc <- d.fetchBodies(origin + 1) }() // Bodies are retrieved during normal and fast sync
go func() { errc <- d.fetchReceipts(origin + 1) }() // Receipts are retrieved during fast sync
go func() { errc <- d.fetchNodeData() }() // Node state data is retrieved during fast sync
@ -844,7 +877,7 @@ func (d *Downloader) fetchBlocks61(from uint64) error {
for _, peer := range idles {
// Short circuit if throttling activated
if d.queue.ThrottleBlocks() {
if d.queue.ShouldThrottleBlocks() {
throttled = true
break
}
@ -860,8 +893,13 @@ func (d *Downloader) fetchBlocks61(from uint64) error {
}
// Fetch the chunk and make sure any errors return the hashes to the queue
if err := peer.Fetch61(request); err != nil {
glog.V(logger.Error).Infof("%v: fetch failed, rescheduling", peer)
d.queue.CancelBlocks(request)
// Although we could try and make an attempt to fix this, this error really
// means that we've double allocated a fetch task to a peer. If that is the
// case, the internal state of the downloader and the queue is very wrong so
// better hard crash and note the error instead of silently accumulating into
// a much bigger issue.
panic(fmt.Sprintf("%v: fetch assignment failed, hard panic", peer))
d.queue.CancelBlocks(request) // noop for now
}
}
// Make sure that we have peers available for fetching. If all peers have been tried
@ -1051,28 +1089,34 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
//
// The queue parameter can be used to switch between queuing headers for block
// body download too, or directly import as pure header chains.
func (d *Downloader) fetchHeaders(p *peer, td *big.Int, from, latest uint64) error {
func (d *Downloader) fetchHeaders(p *peer, td *big.Int, from uint64) error {
glog.V(logger.Debug).Infof("%v: downloading headers from #%d", p, from)
defer glog.V(logger.Debug).Infof("%v: header download terminated", p)
// Calculate the pivoting point for switching from fast to slow sync
pivot := d.queue.FastSyncPivot()
// Keep a count of uncertain headers to roll back
rollback := []*types.Header{}
defer func() {
if len(rollback) > 0 {
// Flatten the headers and roll them back
hashes := make([]common.Hash, len(rollback))
for i, header := range rollback {
hashes[i] = header.Hash()
}
lh, lfb, lb := d.headHeader().Number, d.headFastBlock().Number(), d.headBlock().Number()
d.rollback(hashes)
glog.V(logger.Warn).Infof("Rolled back %d headers (LH: %d->%d, FB: %d->%d, LB: %d->%d)",
len(hashes), lh, d.headHeader().Number, lfb, d.headFastBlock().Number(), lb, d.headBlock().Number())
// If we're already past the pivot point, this could be an attack, disable fast sync
if rollback[len(rollback)-1].Number.Uint64() > pivot {
d.noFast = true
}
}
}()
// Calculate the pivoting point for switching from fast to slow sync
pivot := uint64(0)
if d.mode == FastSync && latest > uint64(minFullBlocks) {
pivot = latest - uint64(minFullBlocks)
} else if d.mode == LightSync {
pivot = latest
}
// Create a timeout timer, and the associated hash fetcher
request := time.Now() // time of the last fetch request
timeout := time.NewTimer(0) // timer to dump a non-responsive active peer
@ -1135,6 +1179,19 @@ func (d *Downloader) fetchHeaders(p *peer, td *big.Int, from, latest uint64) err
if !gotHeaders && td.Cmp(d.getTd(d.headBlock().Hash())) > 0 {
return errStallingPeer
}
// If fast or light syncing, ensure promised headers are indeed delivered. This is
// needed to detect scenarios where an attacker feeds a bad pivot and then bails out
// of delivering the post-pivot blocks that would flag the invalid content.
//
// This check cannot be executed "as is" for full imports, since blocks may still be
// queued for processing when the header download completes. However, as long as the
// peer gave us something useful, we're already happy/progressed (above check).
if d.mode == FastSync || d.mode == LightSync {
if td.Cmp(d.getTd(d.headHeader().Hash())) > 0 {
return errStallingPeer
}
}
rollback = nil
return nil
}
gotHeaders = true
@ -1152,8 +1209,8 @@ func (d *Downloader) fetchHeaders(p *peer, td *big.Int, from, latest uint64) err
}
}
// If we're importing pure headers, verify based on their recentness
frequency := headerCheckFrequency
if headers[len(headers)-1].Number.Uint64()+uint64(minCheckedHeaders) > pivot {
frequency := fsHeaderCheckFrequency
if headers[len(headers)-1].Number.Uint64()+uint64(fsHeaderForceVerify) > pivot {
frequency = 1
}
if n, err := d.insertHeaders(headers, frequency); err != nil {
@ -1162,11 +1219,8 @@ func (d *Downloader) fetchHeaders(p *peer, td *big.Int, from, latest uint64) err
}
// All verifications passed, store newly found uncertain headers
rollback = append(rollback, unknown...)
if len(rollback) > minCheckedHeaders {
rollback = append(rollback[:0], rollback[len(rollback)-minCheckedHeaders:]...)
}
if headers[len(headers)-1].Number.Uint64() >= pivot {
rollback = rollback[:0]
if len(rollback) > fsHeaderSafetyNet {
rollback = append(rollback[:0], rollback[len(rollback)-fsHeaderSafetyNet:]...)
}
}
if d.mode == FullSync || d.mode == FastSync {
@ -1230,12 +1284,11 @@ func (d *Downloader) fetchBodies(from uint64) error {
expire = func() []string { return d.queue.ExpireBodies(bodyHardTTL) }
fetch = func(p *peer, req *fetchRequest) error { return p.FetchBodies(req) }
capacity = func(p *peer) int { return p.BlockCapacity() }
getIdles = func() ([]*peer, int) { return d.peers.BodyIdlePeers() }
setIdle = func(p *peer) { p.SetBlocksIdle() }
setIdle = func(p *peer) { p.SetBodiesIdle() }
)
err := d.fetchParts(errCancelBodyFetch, d.bodyCh, deliver, d.bodyWakeCh, expire,
d.queue.PendingBlocks, d.queue.InFlightBlocks, d.queue.ThrottleBlocks, d.queue.ReserveBodies,
d.bodyFetchHook, fetch, d.queue.CancelBodies, capacity, getIdles, setIdle, "Body")
d.queue.PendingBlocks, d.queue.InFlightBlocks, d.queue.ShouldThrottleBlocks, d.queue.ReserveBodies,
d.bodyFetchHook, fetch, d.queue.CancelBodies, capacity, d.peers.BodyIdlePeers, setIdle, "Body")
glog.V(logger.Debug).Infof("Block body download terminated: %v", err)
return err
@ -1252,13 +1305,13 @@ func (d *Downloader) fetchReceipts(from uint64) error {
pack := packet.(*receiptPack)
return d.queue.DeliverReceipts(pack.peerId, pack.receipts)
}
expire = func() []string { return d.queue.ExpireReceipts(bodyHardTTL) }
expire = func() []string { return d.queue.ExpireReceipts(receiptHardTTL) }
fetch = func(p *peer, req *fetchRequest) error { return p.FetchReceipts(req) }
capacity = func(p *peer) int { return p.ReceiptCapacity() }
setIdle = func(p *peer) { p.SetReceiptsIdle() }
)
err := d.fetchParts(errCancelReceiptFetch, d.receiptCh, deliver, d.receiptWakeCh, expire,
d.queue.PendingReceipts, d.queue.InFlightReceipts, d.queue.ThrottleReceipts, d.queue.ReserveReceipts,
d.queue.PendingReceipts, d.queue.InFlightReceipts, d.queue.ShouldThrottleReceipts, d.queue.ReserveReceipts,
d.receiptFetchHook, fetch, d.queue.CancelReceipts, capacity, d.peers.ReceiptIdlePeers, setIdle, "Receipt")
glog.V(logger.Debug).Infof("Receipt download terminated: %v", err)
@ -1307,9 +1360,9 @@ func (d *Downloader) fetchNodeData() error {
capacity = func(p *peer) int { return p.NodeDataCapacity() }
setIdle = func(p *peer) { p.SetNodeDataIdle() }
)
err := d.fetchParts(errCancelReceiptFetch, d.stateCh, deliver, d.stateWakeCh, expire,
err := d.fetchParts(errCancelStateFetch, d.stateCh, deliver, d.stateWakeCh, expire,
d.queue.PendingNodeData, d.queue.InFlightNodeData, throttle, reserve, nil, fetch,
d.queue.CancelNodeData, capacity, d.peers.ReceiptIdlePeers, setIdle, "State")
d.queue.CancelNodeData, capacity, d.peers.NodeDataIdlePeers, setIdle, "State")
glog.V(logger.Debug).Infof("Node state data download terminated: %v", err)
return err
@ -1323,7 +1376,7 @@ func (d *Downloader) fetchParts(errCancel error, deliveryCh chan dataPack, deliv
fetchHook func([]*types.Header), fetch func(*peer, *fetchRequest) error, cancel func(*fetchRequest), capacity func(*peer) int,
idle func() ([]*peer, int), setIdle func(*peer), kind string) error {
// Create a ticker to detect expired retreival tasks
// Create a ticker to detect expired retrieval tasks
ticker := time.NewTicker(100 * time.Millisecond)
defer ticker.Stop()
@ -1366,11 +1419,6 @@ func (d *Downloader) fetchParts(errCancel error, deliveryCh chan dataPack, deliv
// The hash chain is invalid (blocks are not ordered properly), abort
return err
case errInvalidBody, errInvalidReceipt:
// The peer delivered something very bad, drop immediately
glog.V(logger.Error).Infof("%s: delivered invalid %s, dropping", peer, strings.ToLower(kind))
d.dropPeer(peer.id)
case errNoFetchesPending:
// Peer probably timed out with its delivery but came through
// in the end, demote, but allow to to pull from this peer.
@ -1475,8 +1523,13 @@ func (d *Downloader) fetchParts(errCancel error, deliveryCh chan dataPack, deliv
fetchHook(request.Headers)
}
if err := fetch(peer, request); err != nil {
glog.V(logger.Error).Infof("%v: %s fetch failed, rescheduling", peer, strings.ToLower(kind))
cancel(request)
// Although we could try and make an attempt to fix this, this error really
// means that we've double allocated a fetch task to a peer. If that is the
// case, the internal state of the downloader and the queue is very wrong so
// better hard crash and note the error instead of silently accumulating into
// a much bigger issue.
panic(fmt.Sprintf("%v: %s fetch assignment failed, hard panic", peer, strings.ToLower(kind)))
cancel(request) // noop for now
}
running = true
}
@ -1526,6 +1579,7 @@ func (d *Downloader) process() {
// Repeat the processing as long as there are results to process
for {
// Fetch the next batch of results
pivot := d.queue.FastSyncPivot() // Fetch pivot before results to prevent reset race
results := d.queue.TakeResults()
if len(results) == 0 {
return
@ -1545,7 +1599,6 @@ func (d *Downloader) process() {
}
// Retrieve the a batch of results to import
var (
headers = make([]*types.Header, 0, maxResultsProcess)
blocks = make([]*types.Block, 0, maxResultsProcess)
receipts = make([]types.Receipts, 0, maxResultsProcess)
)
@ -1556,11 +1609,9 @@ func (d *Downloader) process() {
blocks = append(blocks, types.NewBlockWithHeader(result.Header).WithBody(result.Transactions, result.Uncles))
case d.mode == FastSync:
blocks = append(blocks, types.NewBlockWithHeader(result.Header).WithBody(result.Transactions, result.Uncles))
if result.Header.Number.Uint64() <= d.queue.fastSyncPivot {
if result.Header.Number.Uint64() <= pivot {
receipts = append(receipts, result.Receipts)
}
case d.mode == LightSync:
headers = append(headers, result.Header)
}
}
// Try to process the results, aborting if there's an error
@ -1569,12 +1620,10 @@ func (d *Downloader) process() {
index int
)
switch {
case len(headers) > 0:
index, err = d.insertHeaders(headers, headerCheckFrequency)
case len(receipts) > 0:
index, err = d.insertReceipts(blocks, receipts)
if err == nil && blocks[len(blocks)-1].NumberU64() == d.queue.fastSyncPivot {
if err == nil && blocks[len(blocks)-1].NumberU64() == pivot {
glog.V(logger.Debug).Infof("Committing block #%d [%x…] as the new head", blocks[len(blocks)-1].Number(), blocks[len(blocks)-1].Hash().Bytes()[:4])
index, err = len(blocks)-1, d.commitHeadBlock(blocks[len(blocks)-1].Hash())
}
default:

458
eth/downloader/downloader_test.go
View File

@ -136,7 +136,7 @@ type downloadTester struct {
}
// newTester creates a new downloader test mocker.
func newTester(mode SyncMode) *downloadTester {
func newTester() *downloadTester {
tester := &downloadTester{
ownHashes: []common.Hash{genesis.Hash()},
ownHeaders: map[common.Hash]*types.Header{genesis.Hash(): genesis.Header()},
@ -150,7 +150,7 @@ func newTester(mode SyncMode) *downloadTester {
peerChainTds: make(map[string]map[common.Hash]*big.Int),
}
tester.stateDb, _ = ethdb.NewMemDatabase()
tester.downloader = New(mode, tester.stateDb, new(event.TypeMux), tester.hasHeader, tester.hasBlock, tester.getHeader,
tester.downloader = New(tester.stateDb, new(event.TypeMux), tester.hasHeader, tester.hasBlock, tester.getHeader,
tester.getBlock, tester.headHeader, tester.headBlock, tester.headFastBlock, tester.commitHeadBlock, tester.getTd,
tester.insertHeaders, tester.insertBlocks, tester.insertReceipts, tester.rollback, tester.dropPeer)
@ -158,7 +158,7 @@ func newTester(mode SyncMode) *downloadTester {
}
// sync starts synchronizing with a remote peer, blocking until it completes.
func (dl *downloadTester) sync(id string, td *big.Int) error {
func (dl *downloadTester) sync(id string, td *big.Int, mode SyncMode) error {
dl.lock.RLock()
hash := dl.peerHashes[id][0]
// If no particular TD was requested, load from the peer's blockchain
@ -170,7 +170,7 @@ func (dl *downloadTester) sync(id string, td *big.Int) error {
}
dl.lock.RUnlock()
err := dl.downloader.synchronise(id, hash, td)
err := dl.downloader.synchronise(id, hash, td, mode)
for {
// If the queue is empty and processing stopped, break
if dl.downloader.queue.Idle() && atomic.LoadInt32(&dl.downloader.processing) == 0 {
@ -214,7 +214,7 @@ func (dl *downloadTester) headHeader() *types.Header {
defer dl.lock.RUnlock()
for i := len(dl.ownHashes) - 1; i >= 0; i-- {
if header := dl.getHeader(dl.ownHashes[i]); header != nil {
if header := dl.ownHeaders[dl.ownHashes[i]]; header != nil {
return header
}
}
@ -227,7 +227,7 @@ func (dl *downloadTester) headBlock() *types.Block {
defer dl.lock.RUnlock()
for i := len(dl.ownHashes) - 1; i >= 0; i-- {
if block := dl.getBlock(dl.ownHashes[i]); block != nil {
if block := dl.ownBlocks[dl.ownHashes[i]]; block != nil {
if _, err := dl.stateDb.Get(block.Root().Bytes()); err == nil {
return block
}
@ -242,7 +242,7 @@ func (dl *downloadTester) headFastBlock() *types.Block {
defer dl.lock.RUnlock()
for i := len(dl.ownHashes) - 1; i >= 0; i-- {
if block := dl.getBlock(dl.ownHashes[i]); block != nil {
if block := dl.ownBlocks[dl.ownHashes[i]]; block != nil {
return block
}
}
@ -291,7 +291,7 @@ func (dl *downloadTester) insertHeaders(headers []*types.Header, checkFreq int)
}
dl.ownHashes = append(dl.ownHashes, header.Hash())
dl.ownHeaders[header.Hash()] = header
dl.ownChainTd[header.Hash()] = dl.ownChainTd[header.ParentHash]
dl.ownChainTd[header.Hash()] = new(big.Int).Add(dl.ownChainTd[header.ParentHash], header.Difficulty)
}
return len(headers), nil
}
@ -305,11 +305,13 @@ func (dl *downloadTester) insertBlocks(blocks types.Blocks) (int, error) {
if _, ok := dl.ownBlocks[block.ParentHash()]; !ok {
return i, errors.New("unknown parent")
}
if _, ok := dl.ownHeaders[block.Hash()]; !ok {
dl.ownHashes = append(dl.ownHashes, block.Hash())
dl.ownHeaders[block.Hash()] = block.Header()
}
dl.ownBlocks[block.Hash()] = block
dl.stateDb.Put(block.Root().Bytes(), []byte{})
dl.ownChainTd[block.Hash()] = dl.ownChainTd[block.ParentHash()]
dl.stateDb.Put(block.Root().Bytes(), []byte{0x00})
dl.ownChainTd[block.Hash()] = new(big.Int).Add(dl.ownChainTd[block.ParentHash()], block.Difficulty())
}
return len(blocks), nil
}
@ -381,7 +383,19 @@ func (dl *downloadTester) newSlowPeer(id string, version int, hashes []common.Ha
dl.peerReceipts[id] = make(map[common.Hash]types.Receipts)
dl.peerChainTds[id] = make(map[common.Hash]*big.Int)
for _, hash := range hashes {
genesis := hashes[len(hashes)-1]
if header := headers[genesis]; header != nil {
dl.peerHeaders[id][genesis] = header
dl.peerChainTds[id][genesis] = header.Difficulty
}
if block := blocks[genesis]; block != nil {
dl.peerBlocks[id][genesis] = block
dl.peerChainTds[id][genesis] = block.Difficulty()
}
for i := len(hashes) - 2; i >= 0; i-- {
hash := hashes[i]
if header, ok := headers[hash]; ok {
dl.peerHeaders[id][hash] = header
if _, ok := dl.peerHeaders[id][header.ParentHash]; ok {
@ -627,21 +641,28 @@ func assertOwnChain(t *testing.T, tester *downloadTester, length int) {
// number of items of the various chain components.
func assertOwnForkedChain(t *testing.T, tester *downloadTester, common int, lengths []int) {
// Initialize the counters for the first fork
headers, blocks, receipts := lengths[0], lengths[0], lengths[0]-minFullBlocks
if receipts < 0 {
receipts = 1
headers, blocks := lengths[0], lengths[0]
minReceipts, maxReceipts := lengths[0]-fsMinFullBlocks-fsPivotInterval, lengths[0]-fsMinFullBlocks
if minReceipts < 0 {
minReceipts = 1
}
if maxReceipts < 0 {
maxReceipts = 1
}
// Update the counters for each subsequent fork
for _, length := range lengths[1:] {
headers += length - common
blocks += length - common
receipts += length - common - minFullBlocks
minReceipts += length - common - fsMinFullBlocks - fsPivotInterval
maxReceipts += length - common - fsMinFullBlocks
}
switch tester.downloader.mode {
case FullSync:
receipts = 1
minReceipts, maxReceipts = 1, 1
case LightSync:
blocks, receipts = 1, 1
blocks, minReceipts, maxReceipts = 1, 1, 1
}
if hs := len(tester.ownHeaders); hs != headers {
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, headers)
@ -649,14 +670,20 @@ func assertOwnForkedChain(t *testing.T, tester *downloadTester, common int, leng
if bs := len(tester.ownBlocks); bs != blocks {
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, blocks)
}
if rs := len(tester.ownReceipts); rs != receipts {
t.Fatalf("synchronised receipts mismatch: have %v, want %v", rs, receipts)
if rs := len(tester.ownReceipts); rs < minReceipts || rs > maxReceipts {
t.Fatalf("synchronised receipts mismatch: have %v, want between [%v, %v]", rs, minReceipts, maxReceipts)
}
// Verify the state trie too for fast syncs
if tester.downloader.mode == FastSync {
if index := lengths[len(lengths)-1] - minFullBlocks - 1; index > 0 {
if statedb := state.New(tester.ownHeaders[tester.ownHashes[index]].Root, tester.stateDb); statedb == nil {
t.Fatalf("state reconstruction failed")
index := 0
if pivot := int(tester.downloader.queue.fastSyncPivot); pivot < common {
index = pivot
} else {
index = len(tester.ownHashes) - lengths[len(lengths)-1] + int(tester.downloader.queue.fastSyncPivot)
}
if index > 0 {
if statedb, err := state.New(tester.ownHeaders[tester.ownHashes[index]].Root, tester.stateDb); statedb == nil || err != nil {
t.Fatalf("state reconstruction failed: %v", err)
}
}
}
@ -678,11 +705,11 @@ func testCanonicalSynchronisation(t *testing.T, protocol int, mode SyncMode) {
targetBlocks := blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
// Synchronise with the peer and make sure all relevant data was retrieved
if err := tester.sync("peer", nil); err != nil {
if err := tester.sync("peer", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
@ -702,7 +729,7 @@ func testThrottling(t *testing.T, protocol int, mode SyncMode) {
targetBlocks := 8 * blockCacheLimit
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
// Wrap the importer to allow stepping
@ -714,7 +741,7 @@ func testThrottling(t *testing.T, protocol int, mode SyncMode) {
// Start a synchronisation concurrently
errc := make(chan error)
go func() {
errc <- tester.sync("peer", nil)
errc <- tester.sync("peer", nil, mode)
}()
// Iteratively take some blocks, always checking the retrieval count
for {
@ -726,10 +753,11 @@ func testThrottling(t *testing.T, protocol int, mode SyncMode) {
break
}
// Wait a bit for sync to throttle itself
var cached int
var cached, frozen int
for start := time.Now(); time.Since(start) < time.Second; {
time.Sleep(25 * time.Millisecond)
tester.lock.RLock()
tester.downloader.queue.lock.RLock()
cached = len(tester.downloader.queue.blockDonePool)
if mode == FastSync {
@ -739,16 +767,23 @@ func testThrottling(t *testing.T, protocol int, mode SyncMode) {
}
}
}
frozen = int(atomic.LoadUint32(&blocked))
retrieved = len(tester.ownBlocks)
tester.downloader.queue.lock.RUnlock()
tester.lock.RUnlock()
if cached == blockCacheLimit || len(tester.ownBlocks)+cached+int(atomic.LoadUint32(&blocked)) == targetBlocks+1 {
if cached == blockCacheLimit || retrieved+cached+frozen == targetBlocks+1 {
break
}
}
// Make sure we filled up the cache, then exhaust it
time.Sleep(25 * time.Millisecond) // give it a chance to screw up
if cached != blockCacheLimit && len(tester.ownBlocks)+cached+int(atomic.LoadUint32(&blocked)) != targetBlocks+1 {
t.Fatalf("block count mismatch: have %v, want %v (owned %v, target %v)", cached, blockCacheLimit, len(tester.ownBlocks), targetBlocks+1)
tester.lock.RLock()
retrieved = len(tester.ownBlocks)
tester.lock.RUnlock()
if cached != blockCacheLimit && retrieved+cached+frozen != targetBlocks+1 {
t.Fatalf("block count mismatch: have %v, want %v (owned %v, blocked %v, target %v)", cached, blockCacheLimit, retrieved, frozen, targetBlocks+1)
}
// Permit the blocked blocks to import
if atomic.LoadUint32(&blocked) > 0 {
@ -779,18 +814,18 @@ func testForkedSynchronisation(t *testing.T, protocol int, mode SyncMode) {
common, fork := MaxHashFetch, 2*MaxHashFetch
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := makeChainFork(common+fork, fork, genesis, nil)
tester := newTester(mode)
tester := newTester()
tester.newPeer("fork A", protocol, hashesA, headersA, blocksA, receiptsA)
tester.newPeer("fork B", protocol, hashesB, headersB, blocksB, receiptsB)
// Synchronise with the peer and make sure all blocks were retrieved
if err := tester.sync("fork A", nil); err != nil {
if err := tester.sync("fork A", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, common+fork+1)
// Synchronise with the second peer and make sure that fork is pulled too
if err := tester.sync("fork B", nil); err != nil {
if err := tester.sync("fork B", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnForkedChain(t, tester, common+1, []int{common + fork + 1, common + fork + 1})
@ -798,7 +833,7 @@ func testForkedSynchronisation(t *testing.T, protocol int, mode SyncMode) {
// Tests that an inactive downloader will not accept incoming hashes and blocks.
func TestInactiveDownloader61(t *testing.T) {
tester := newTester(FullSync)
tester := newTester()
// Check that neither hashes nor blocks are accepted
if err := tester.downloader.DeliverHashes("bad peer", []common.Hash{}); err != errNoSyncActive {
@ -812,7 +847,7 @@ func TestInactiveDownloader61(t *testing.T) {
// Tests that an inactive downloader will not accept incoming block headers and
// bodies.
func TestInactiveDownloader62(t *testing.T) {
tester := newTester(FullSync)
tester := newTester()
// Check that neither block headers nor bodies are accepted
if err := tester.downloader.DeliverHeaders("bad peer", []*types.Header{}); err != errNoSyncActive {
@ -826,7 +861,7 @@ func TestInactiveDownloader62(t *testing.T) {
// Tests that an inactive downloader will not accept incoming block headers,
// bodies and receipts.
func TestInactiveDownloader63(t *testing.T) {
tester := newTester(FullSync)
tester := newTester()
// Check that neither block headers nor bodies are accepted
if err := tester.downloader.DeliverHeaders("bad peer", []*types.Header{}); err != errNoSyncActive {
@ -860,7 +895,7 @@ func testCancel(t *testing.T, protocol int, mode SyncMode) {
}
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
// Make sure canceling works with a pristine downloader
@ -869,7 +904,7 @@ func testCancel(t *testing.T, protocol int, mode SyncMode) {
t.Errorf("download queue not idle")
}
// Synchronise with the peer, but cancel afterwards
if err := tester.sync("peer", nil); err != nil {
if err := tester.sync("peer", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
tester.downloader.cancel()
@ -893,12 +928,12 @@ func testMultiSynchronisation(t *testing.T, protocol int, mode SyncMode) {
targetBlocks := targetPeers*blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
for i := 0; i < targetPeers; i++ {
id := fmt.Sprintf("peer #%d", i)
tester.newPeer(id, protocol, hashes[i*blockCacheLimit:], headers, blocks, receipts)
}
if err := tester.sync("peer #0", nil); err != nil {
if err := tester.sync("peer #0", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
@ -920,14 +955,14 @@ func testMultiProtoSync(t *testing.T, protocol int, mode SyncMode) {
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
// Create peers of every type
tester := newTester(mode)
tester.newPeer("peer 61", 61, hashes, headers, blocks, receipts)
tester.newPeer("peer 62", 62, hashes, headers, blocks, receipts)
tester := newTester()
tester.newPeer("peer 61", 61, hashes, nil, blocks, nil)
tester.newPeer("peer 62", 62, hashes, headers, blocks, nil)
tester.newPeer("peer 63", 63, hashes, headers, blocks, receipts)
tester.newPeer("peer 64", 64, hashes, headers, blocks, receipts)
// Synchronise with the requestd peer and make sure all blocks were retrieved
if err := tester.sync(fmt.Sprintf("peer %d", protocol), nil); err != nil {
// Synchronise with the requested peer and make sure all blocks were retrieved
if err := tester.sync(fmt.Sprintf("peer %d", protocol), nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
@ -955,7 +990,7 @@ func testEmptyShortCircuit(t *testing.T, protocol int, mode SyncMode) {
targetBlocks := 2*blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
tester.newPeer("peer", protocol, hashes, headers, blocks, receipts)
// Instrument the downloader to signal body requests
@ -967,7 +1002,7 @@ func testEmptyShortCircuit(t *testing.T, protocol int, mode SyncMode) {
atomic.AddInt32(&receiptsHave, int32(len(headers)))
}
// Synchronise with the peer and make sure all blocks were retrieved
if err := tester.sync("peer", nil); err != nil {
if err := tester.sync("peer", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
@ -980,7 +1015,7 @@ func testEmptyShortCircuit(t *testing.T, protocol int, mode SyncMode) {
}
}
for hash, receipt := range receipts {
if mode == FastSync && len(receipt) > 0 && headers[hash].Number.Uint64() <= uint64(targetBlocks-minFullBlocks) {
if mode == FastSync && len(receipt) > 0 && headers[hash].Number.Uint64() <= tester.downloader.queue.fastSyncPivot {
receiptsNeeded++
}
}
@ -1006,19 +1041,19 @@ func testMissingHeaderAttack(t *testing.T, protocol int, mode SyncMode) {
targetBlocks := blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
// Attempt a full sync with an attacker feeding gapped headers
tester.newPeer("attack", protocol, hashes, headers, blocks, receipts)
missing := targetBlocks / 2
delete(tester.peerHeaders["attack"], hashes[missing])
if err := tester.sync("attack", nil); err == nil {
if err := tester.sync("attack", nil, mode); err == nil {
t.Fatalf("succeeded attacker synchronisation")
}
// Synchronise with the valid peer and make sure sync succeeds
tester.newPeer("valid", protocol, hashes, headers, blocks, receipts)
if err := tester.sync("valid", nil); err != nil {
if err := tester.sync("valid", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
@ -1038,7 +1073,7 @@ func testShiftedHeaderAttack(t *testing.T, protocol int, mode SyncMode) {
targetBlocks := blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
// Attempt a full sync with an attacker feeding shifted headers
tester.newPeer("attack", protocol, hashes, headers, blocks, receipts)
@ -1046,12 +1081,12 @@ func testShiftedHeaderAttack(t *testing.T, protocol int, mode SyncMode) {
delete(tester.peerBlocks["attack"], hashes[len(hashes)-2])
delete(tester.peerReceipts["attack"], hashes[len(hashes)-2])
if err := tester.sync("attack", nil); err == nil {
if err := tester.sync("attack", nil, mode); err == nil {
t.Fatalf("succeeded attacker synchronisation")
}
// Synchronise with the valid peer and make sure sync succeeds
tester.newPeer("valid", protocol, hashes, headers, blocks, receipts)
if err := tester.sync("valid", nil); err != nil {
if err := tester.sync("valid", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
@ -1064,92 +1099,81 @@ func TestInvalidHeaderRollback64Light(t *testing.T) { testInvalidHeaderRollback(
func testInvalidHeaderRollback(t *testing.T, protocol int, mode SyncMode) {
// Create a small enough block chain to download
targetBlocks := 3*minCheckedHeaders + minFullBlocks
targetBlocks := 3*fsHeaderSafetyNet + fsMinFullBlocks
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
tester := newTester(mode)
tester := newTester()
// Attempt to sync with an attacker that feeds junk during the fast sync phase
// Attempt to sync with an attacker that feeds junk during the fast sync phase.
// This should result in the last fsHeaderSafetyNet headers being rolled back.
tester.newPeer("fast-attack", protocol, hashes, headers, blocks, receipts)
missing := minCheckedHeaders + MaxHeaderFetch + 1
missing := fsHeaderSafetyNet + MaxHeaderFetch + 1
delete(tester.peerHeaders["fast-attack"], hashes[len(hashes)-missing])
if err := tester.sync("fast-attack", nil); err == nil {
if err := tester.sync("fast-attack", nil, mode); err == nil {
t.Fatalf("succeeded fast attacker synchronisation")
}
if head := tester.headHeader().Number.Int64(); int(head) > MaxHeaderFetch {
t.Fatalf("rollback head mismatch: have %v, want at most %v", head, MaxHeaderFetch)
t.Errorf("rollback head mismatch: have %v, want at most %v", head, MaxHeaderFetch)
}
// Attempt to sync with an attacker that feeds junk during the block import phase
// Attempt to sync with an attacker that feeds junk during the block import phase.
// This should result in both the last fsHeaderSafetyNet number of headers being
// rolled back, and also the pivot point being reverted to a non-block status.
tester.newPeer("block-attack", protocol, hashes, headers, blocks, receipts)
missing = 3*minCheckedHeaders + MaxHeaderFetch + 1
missing = 3*fsHeaderSafetyNet + MaxHeaderFetch + 1
delete(tester.peerHeaders["block-attack"], hashes[len(hashes)-missing])
if err := tester.sync("block-attack", nil); err == nil {
if err := tester.sync("block-attack", nil, mode); err == nil {
t.Fatalf("succeeded block attacker synchronisation")
}
if head := tester.headHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
}
if mode == FastSync {
// Fast sync should not discard anything below the verified pivot point
if head := tester.headHeader().Number.Int64(); int(head) < 3*minCheckedHeaders {
t.Fatalf("rollback head mismatch: have %v, want at least %v", head, 3*minCheckedHeaders)
}
} else if mode == LightSync {
// Light sync should still discard data as before
if head := tester.headHeader().Number.Int64(); int(head) > 3*minCheckedHeaders {
t.Fatalf("rollback head mismatch: have %v, want at most %v", head, 3*minCheckedHeaders)
if head := tester.headBlock().NumberU64(); head != 0 {
t.Errorf("fast sync pivot block #%d not rolled back", head)
}
}
// Synchronise with the valid peer and make sure sync succeeds
// Attempt to sync with an attacker that withholds promised blocks after the
// fast sync pivot point. This could be a trial to leave the node with a bad
// but already imported pivot block.
tester.newPeer("withhold-attack", protocol, hashes, headers, blocks, receipts)
missing = 3*fsHeaderSafetyNet + MaxHeaderFetch + 1
tester.downloader.noFast = false
tester.downloader.syncInitHook = func(uint64, uint64) {
for i := missing; i <= len(hashes); i++ {
delete(tester.peerHeaders["withhold-attack"], hashes[len(hashes)-i])
}
tester.downloader.syncInitHook = nil
}
if err := tester.sync("withhold-attack", nil, mode); err == nil {
t.Fatalf("succeeded withholding attacker synchronisation")
}
if head := tester.headHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
}
if mode == FastSync {
if head := tester.headBlock().NumberU64(); head != 0 {
t.Errorf("fast sync pivot block #%d not rolled back", head)
}
}
// Synchronise with the valid peer and make sure sync succeeds. Since the last
// rollback should also disable fast syncing for this process, verify that we
// did a fresh full sync. Note, we can't assert anything about the receipts
// since we won't purge the database of them, hence we can't use asserOwnChain.
tester.newPeer("valid", protocol, hashes, headers, blocks, receipts)
if err := tester.sync("valid", nil); err != nil {
if err := tester.sync("valid", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
}
// Tests that if a peer sends an invalid block piece (body or receipt) for a
// requested block, it gets dropped immediately by the downloader.
func TestInvalidContentAttack62(t *testing.T) { testInvalidContentAttack(t, 62, FullSync) }
func TestInvalidContentAttack63Full(t *testing.T) { testInvalidContentAttack(t, 63, FullSync) }
func TestInvalidContentAttack63Fast(t *testing.T) { testInvalidContentAttack(t, 63, FastSync) }
func TestInvalidContentAttack64Full(t *testing.T) { testInvalidContentAttack(t, 64, FullSync) }
func TestInvalidContentAttack64Fast(t *testing.T) { testInvalidContentAttack(t, 64, FastSync) }
func TestInvalidContentAttack64Light(t *testing.T) { testInvalidContentAttack(t, 64, LightSync) }
func testInvalidContentAttack(t *testing.T, protocol int, mode SyncMode) {
// Create two peers, one feeding invalid block bodies
targetBlocks := 4*blockCacheLimit - 15
hashes, headers, validBlocks, validReceipts := makeChain(targetBlocks, 0, genesis, nil)
invalidBlocks := make(map[common.Hash]*types.Block)
for hash, block := range validBlocks {
invalidBlocks[hash] = types.NewBlockWithHeader(block.Header())
if hs := len(tester.ownHeaders); hs != len(headers) {
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, len(headers))
}
invalidReceipts := make(map[common.Hash]types.Receipts)
for hash, _ := range validReceipts {
invalidReceipts[hash] = types.Receipts{&types.Receipt{}}
}
tester := newTester(mode)
tester.newPeer("valid", protocol, hashes, headers, validBlocks, validReceipts)
if mode != LightSync {
tester.newPeer("body attack", protocol, hashes, headers, invalidBlocks, validReceipts)
if bs := len(tester.ownBlocks); bs != len(blocks) {
t.Fatalf("synchronised blocks mismatch: have %v, want %v", bs, len(blocks))
}
if mode == FastSync {
tester.newPeer("receipt attack", protocol, hashes, headers, validBlocks, invalidReceipts)
}
// Synchronise with the valid peer (will pull contents from the attacker too)
if err := tester.sync("valid", nil); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
assertOwnChain(t, tester, targetBlocks+1)
// Make sure the attacker was detected and dropped in the mean time
if _, ok := tester.peerHashes["body attack"]; ok {
t.Fatalf("block body attacker not detected/dropped")
}
if _, ok := tester.peerHashes["receipt attack"]; ok {
t.Fatalf("receipt attacker not detected/dropped")
}
}
@ -1164,11 +1188,11 @@ func TestHighTDStarvationAttack64Fast(t *testing.T) { testHighTDStarvationAttac
func TestHighTDStarvationAttack64Light(t *testing.T) { testHighTDStarvationAttack(t, 64, LightSync) }
func testHighTDStarvationAttack(t *testing.T, protocol int, mode SyncMode) {
tester := newTester(mode)
tester := newTester()
hashes, headers, blocks, receipts := makeChain(0, 0, genesis, nil)
tester.newPeer("attack", protocol, []common.Hash{hashes[0]}, headers, blocks, receipts)
if err := tester.sync("attack", big.NewInt(1000000)); err != errStallingPeer {
if err := tester.sync("attack", big.NewInt(1000000), mode); err != errStallingPeer {
t.Fatalf("synchronisation error mismatch: have %v, want %v", err, errStallingPeer)
}
}
@ -1206,7 +1230,7 @@ func testBlockHeaderAttackerDropping(t *testing.T, protocol int) {
{errCancelBodyFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
}
// Run the tests and check disconnection status
tester := newTester(FullSync)
tester := newTester()
for i, tt := range tests {
// Register a new peer and ensure it's presence
id := fmt.Sprintf("test %d", i)
@ -1219,120 +1243,125 @@ func testBlockHeaderAttackerDropping(t *testing.T, protocol int) {
// Simulate a synchronisation and check the required result
tester.downloader.synchroniseMock = func(string, common.Hash) error { return tt.result }
tester.downloader.Synchronise(id, genesis.Hash(), big.NewInt(1000))
tester.downloader.Synchronise(id, genesis.Hash(), big.NewInt(1000), FullSync)
if _, ok := tester.peerHashes[id]; !ok != tt.drop {
t.Errorf("test %d: peer drop mismatch for %v: have %v, want %v", i, tt.result, !ok, tt.drop)
}
}
}
// Tests that synchronisation boundaries (origin block number and highest block
// number) is tracked and updated correctly.
func TestSyncBoundaries61(t *testing.T) { testSyncBoundaries(t, 61, FullSync) }
func TestSyncBoundaries62(t *testing.T) { testSyncBoundaries(t, 62, FullSync) }
func TestSyncBoundaries63Full(t *testing.T) { testSyncBoundaries(t, 63, FullSync) }
func TestSyncBoundaries63Fast(t *testing.T) { testSyncBoundaries(t, 63, FastSync) }
func TestSyncBoundaries64Full(t *testing.T) { testSyncBoundaries(t, 64, FullSync) }
func TestSyncBoundaries64Fast(t *testing.T) { testSyncBoundaries(t, 64, FastSync) }
func TestSyncBoundaries64Light(t *testing.T) { testSyncBoundaries(t, 64, LightSync) }
// Tests that synchronisation progress (origin block number, current block number
// and highest block number) is tracked and updated correctly.
func TestSyncProgress61(t *testing.T) { testSyncProgress(t, 61, FullSync) }
func TestSyncProgress62(t *testing.T) { testSyncProgress(t, 62, FullSync) }
func TestSyncProgress63Full(t *testing.T) { testSyncProgress(t, 63, FullSync) }
func TestSyncProgress63Fast(t *testing.T) { testSyncProgress(t, 63, FastSync) }
func TestSyncProgress64Full(t *testing.T) { testSyncProgress(t, 64, FullSync) }
func TestSyncProgress64Fast(t *testing.T) { testSyncProgress(t, 64, FastSync) }
func TestSyncProgress64Light(t *testing.T) { testSyncProgress(t, 64, LightSync) }
func testSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
func testSyncProgress(t *testing.T, protocol int, mode SyncMode) {
// Create a small enough block chain to download
targetBlocks := blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
// Set a sync init hook to catch boundary changes
// Set a sync init hook to catch progress changes
starting := make(chan struct{})
progress := make(chan struct{})
tester := newTester(mode)
tester := newTester()
tester.downloader.syncInitHook = func(origin, latest uint64) {
starting <- struct{}{}
<-progress
}
// Retrieve the sync boundaries and ensure they are zero (pristine sync)
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != 0 {
t.Fatalf("Pristine boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, 0)
// Retrieve the sync progress and ensure they are zero (pristine sync)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != 0 {
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, 0)
}
// Synchronise half the blocks and check initial boundaries
// Synchronise half the blocks and check initial progress
tester.newPeer("peer-half", protocol, hashes[targetBlocks/2:], headers, blocks, receipts)
pending := new(sync.WaitGroup)
pending.Add(1)
go func() {
defer pending.Done()
if err := tester.sync("peer-half", nil); err != nil {
if err := tester.sync("peer-half", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != uint64(targetBlocks/2+1) {
t.Fatalf("Initial boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, targetBlocks/2+1)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != uint64(targetBlocks/2+1) {
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, targetBlocks/2+1)
}
progress <- struct{}{}
pending.Wait()
// Synchronise all the blocks and check continuation boundaries
// Synchronise all the blocks and check continuation progress
tester.newPeer("peer-full", protocol, hashes, headers, blocks, receipts)
pending.Add(1)
go func() {
defer pending.Done()
if err := tester.sync("peer-full", nil); err != nil {
if err := tester.sync("peer-full", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != uint64(targetBlocks/2+1) || latest != uint64(targetBlocks) {
t.Fatalf("Completing boundary mismatch: have %v/%v, want %v/%v", origin, latest, targetBlocks/2+1, targetBlocks)
if origin, current, latest := tester.downloader.Progress(); origin != uint64(targetBlocks/2+1) || current != uint64(targetBlocks/2+1) || latest != uint64(targetBlocks) {
t.Fatalf("Completing progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, targetBlocks/2+1, targetBlocks/2+1, targetBlocks)
}
progress <- struct{}{}
pending.Wait()
// Check final progress after successful sync
if origin, current, latest := tester.downloader.Progress(); origin != uint64(targetBlocks/2+1) || current != uint64(targetBlocks) || latest != uint64(targetBlocks) {
t.Fatalf("Final progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, targetBlocks/2+1, targetBlocks, targetBlocks)
}
}
// Tests that synchronisation boundaries (origin block number and highest block
// Tests that synchronisation progress (origin block number and highest block
// number) is tracked and updated correctly in case of a fork (or manual head
// revertal).
func TestForkedSyncBoundaries61(t *testing.T) { testForkedSyncBoundaries(t, 61, FullSync) }
func TestForkedSyncBoundaries62(t *testing.T) { testForkedSyncBoundaries(t, 62, FullSync) }
func TestForkedSyncBoundaries63Full(t *testing.T) { testForkedSyncBoundaries(t, 63, FullSync) }
func TestForkedSyncBoundaries63Fast(t *testing.T) { testForkedSyncBoundaries(t, 63, FastSync) }
func TestForkedSyncBoundaries64Full(t *testing.T) { testForkedSyncBoundaries(t, 64, FullSync) }
func TestForkedSyncBoundaries64Fast(t *testing.T) { testForkedSyncBoundaries(t, 64, FastSync) }
func TestForkedSyncBoundaries64Light(t *testing.T) { testForkedSyncBoundaries(t, 64, LightSync) }
func TestForkedSyncProgress61(t *testing.T) { testForkedSyncProgress(t, 61, FullSync) }
func TestForkedSyncProgress62(t *testing.T) { testForkedSyncProgress(t, 62, FullSync) }
func TestForkedSyncProgress63Full(t *testing.T) { testForkedSyncProgress(t, 63, FullSync) }
func TestForkedSyncProgress63Fast(t *testing.T) { testForkedSyncProgress(t, 63, FastSync) }
func TestForkedSyncProgress64Full(t *testing.T) { testForkedSyncProgress(t, 64, FullSync) }
func TestForkedSyncProgress64Fast(t *testing.T) { testForkedSyncProgress(t, 64, FastSync) }
func TestForkedSyncProgress64Light(t *testing.T) { testForkedSyncProgress(t, 64, LightSync) }
func testForkedSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
func testForkedSyncProgress(t *testing.T, protocol int, mode SyncMode) {
// Create a forked chain to simulate origin revertal
common, fork := MaxHashFetch, 2*MaxHashFetch
hashesA, hashesB, headersA, headersB, blocksA, blocksB, receiptsA, receiptsB := makeChainFork(common+fork, fork, genesis, nil)
// Set a sync init hook to catch boundary changes
// Set a sync init hook to catch progress changes
starting := make(chan struct{})
progress := make(chan struct{})
tester := newTester(mode)
tester := newTester()
tester.downloader.syncInitHook = func(origin, latest uint64) {
starting <- struct{}{}
<-progress
}
// Retrieve the sync boundaries and ensure they are zero (pristine sync)
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != 0 {
t.Fatalf("Pristine boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, 0)
// Retrieve the sync progress and ensure they are zero (pristine sync)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != 0 {
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, 0)
}
// Synchronise with one of the forks and check boundaries
// Synchronise with one of the forks and check progress
tester.newPeer("fork A", protocol, hashesA, headersA, blocksA, receiptsA)
pending := new(sync.WaitGroup)
pending.Add(1)
go func() {
defer pending.Done()
if err := tester.sync("fork A", nil); err != nil {
if err := tester.sync("fork A", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != uint64(len(hashesA)-1) {
t.Fatalf("Initial boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, len(hashesA)-1)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != uint64(len(hashesA)-1) {
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, len(hashesA)-1)
}
progress <- struct{}{}
pending.Wait()
@ -1340,52 +1369,57 @@ func testForkedSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
// Simulate a successful sync above the fork
tester.downloader.syncStatsChainOrigin = tester.downloader.syncStatsChainHeight
// Synchronise with the second fork and check boundary resets
// Synchronise with the second fork and check progress resets
tester.newPeer("fork B", protocol, hashesB, headersB, blocksB, receiptsB)
pending.Add(1)
go func() {
defer pending.Done()
if err := tester.sync("fork B", nil); err != nil {
if err := tester.sync("fork B", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != uint64(common) || latest != uint64(len(hashesB)-1) {
t.Fatalf("Forking boundary mismatch: have %v/%v, want %v/%v", origin, latest, common, len(hashesB)-1)
if origin, current, latest := tester.downloader.Progress(); origin != uint64(common) || current != uint64(len(hashesA)-1) || latest != uint64(len(hashesB)-1) {
t.Fatalf("Forking progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, common, len(hashesA)-1, len(hashesB)-1)
}
progress <- struct{}{}
pending.Wait()
// Check final progress after successful sync
if origin, current, latest := tester.downloader.Progress(); origin != uint64(common) || current != uint64(len(hashesB)-1) || latest != uint64(len(hashesB)-1) {
t.Fatalf("Final progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, common, len(hashesB)-1, len(hashesB)-1)
}
}
// Tests that if synchronisation is aborted due to some failure, then the boundary
// Tests that if synchronisation is aborted due to some failure, then the progress
// origin is not updated in the next sync cycle, as it should be considered the
// continuation of the previous sync and not a new instance.
func TestFailedSyncBoundaries61(t *testing.T) { testFailedSyncBoundaries(t, 61, FullSync) }
func TestFailedSyncBoundaries62(t *testing.T) { testFailedSyncBoundaries(t, 62, FullSync) }
func TestFailedSyncBoundaries63Full(t *testing.T) { testFailedSyncBoundaries(t, 63, FullSync) }
func TestFailedSyncBoundaries63Fast(t *testing.T) { testFailedSyncBoundaries(t, 63, FastSync) }
func TestFailedSyncBoundaries64Full(t *testing.T) { testFailedSyncBoundaries(t, 64, FullSync) }
func TestFailedSyncBoundaries64Fast(t *testing.T) { testFailedSyncBoundaries(t, 64, FastSync) }
func TestFailedSyncBoundaries64Light(t *testing.T) { testFailedSyncBoundaries(t, 64, LightSync) }
func TestFailedSyncProgress61(t *testing.T) { testFailedSyncProgress(t, 61, FullSync) }
func TestFailedSyncProgress62(t *testing.T) { testFailedSyncProgress(t, 62, FullSync) }
func TestFailedSyncProgress63Full(t *testing.T) { testFailedSyncProgress(t, 63, FullSync) }
func TestFailedSyncProgress63Fast(t *testing.T) { testFailedSyncProgress(t, 63, FastSync) }
func TestFailedSyncProgress64Full(t *testing.T) { testFailedSyncProgress(t, 64, FullSync) }
func TestFailedSyncProgress64Fast(t *testing.T) { testFailedSyncProgress(t, 64, FastSync) }
func TestFailedSyncProgress64Light(t *testing.T) { testFailedSyncProgress(t, 64, LightSync) }
func testFailedSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
func testFailedSyncProgress(t *testing.T, protocol int, mode SyncMode) {
// Create a small enough block chain to download
targetBlocks := blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks, 0, genesis, nil)
// Set a sync init hook to catch boundary changes
// Set a sync init hook to catch progress changes
starting := make(chan struct{})
progress := make(chan struct{})
tester := newTester(mode)
tester := newTester()
tester.downloader.syncInitHook = func(origin, latest uint64) {
starting <- struct{}{}
<-progress
}
// Retrieve the sync boundaries and ensure they are zero (pristine sync)
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != 0 {
t.Fatalf("Pristine boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, 0)
// Retrieve the sync progress and ensure they are zero (pristine sync)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != 0 {
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, 0)
}
// Attempt a full sync with a faulty peer
tester.newPeer("faulty", protocol, hashes, headers, blocks, receipts)
@ -1399,62 +1433,67 @@ func testFailedSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
go func() {
defer pending.Done()
if err := tester.sync("faulty", nil); err == nil {
if err := tester.sync("faulty", nil, mode); err == nil {
t.Fatalf("succeeded faulty synchronisation")
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != uint64(targetBlocks) {
t.Fatalf("Initial boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, targetBlocks)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != uint64(targetBlocks) {
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, targetBlocks)
}
progress <- struct{}{}
pending.Wait()
// Synchronise with a good peer and check that the boundary origin remind the same after a failure
// Synchronise with a good peer and check that the progress origin remind the same after a failure
tester.newPeer("valid", protocol, hashes, headers, blocks, receipts)
pending.Add(1)
go func() {
defer pending.Done()
if err := tester.sync("valid", nil); err != nil {
if err := tester.sync("valid", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != uint64(targetBlocks) {
t.Fatalf("Completing boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, targetBlocks)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current > uint64(targetBlocks/2) || latest != uint64(targetBlocks) {
t.Fatalf("Completing progress mismatch: have %v/%v/%v, want %v/0-%v/%v", origin, current, latest, 0, targetBlocks/2, targetBlocks)
}
progress <- struct{}{}
pending.Wait()
// Check final progress after successful sync
if origin, current, latest := tester.downloader.Progress(); origin > uint64(targetBlocks/2) || current != uint64(targetBlocks) || latest != uint64(targetBlocks) {
t.Fatalf("Final progress mismatch: have %v/%v/%v, want 0-%v/%v/%v", origin, current, latest, targetBlocks/2, targetBlocks, targetBlocks)
}
}
// Tests that if an attacker fakes a chain height, after the attack is detected,
// the boundary height is successfully reduced at the next sync invocation.
func TestFakedSyncBoundaries61(t *testing.T) { testFakedSyncBoundaries(t, 61, FullSync) }
func TestFakedSyncBoundaries62(t *testing.T) { testFakedSyncBoundaries(t, 62, FullSync) }
func TestFakedSyncBoundaries63Full(t *testing.T) { testFakedSyncBoundaries(t, 63, FullSync) }
func TestFakedSyncBoundaries63Fast(t *testing.T) { testFakedSyncBoundaries(t, 63, FastSync) }
func TestFakedSyncBoundaries64Full(t *testing.T) { testFakedSyncBoundaries(t, 64, FullSync) }
func TestFakedSyncBoundaries64Fast(t *testing.T) { testFakedSyncBoundaries(t, 64, FastSync) }
func TestFakedSyncBoundaries64Light(t *testing.T) { testFakedSyncBoundaries(t, 64, LightSync) }
// the progress height is successfully reduced at the next sync invocation.
func TestFakedSyncProgress61(t *testing.T) { testFakedSyncProgress(t, 61, FullSync) }
func TestFakedSyncProgress62(t *testing.T) { testFakedSyncProgress(t, 62, FullSync) }
func TestFakedSyncProgress63Full(t *testing.T) { testFakedSyncProgress(t, 63, FullSync) }
func TestFakedSyncProgress63Fast(t *testing.T) { testFakedSyncProgress(t, 63, FastSync) }
func TestFakedSyncProgress64Full(t *testing.T) { testFakedSyncProgress(t, 64, FullSync) }
func TestFakedSyncProgress64Fast(t *testing.T) { testFakedSyncProgress(t, 64, FastSync) }
func TestFakedSyncProgress64Light(t *testing.T) { testFakedSyncProgress(t, 64, LightSync) }
func testFakedSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
func testFakedSyncProgress(t *testing.T, protocol int, mode SyncMode) {
// Create a small block chain
targetBlocks := blockCacheLimit - 15
hashes, headers, blocks, receipts := makeChain(targetBlocks+3, 0, genesis, nil)
// Set a sync init hook to catch boundary changes
// Set a sync init hook to catch progress changes
starting := make(chan struct{})
progress := make(chan struct{})
tester := newTester(mode)
tester := newTester()
tester.downloader.syncInitHook = func(origin, latest uint64) {
starting <- struct{}{}
<-progress
}
// Retrieve the sync boundaries and ensure they are zero (pristine sync)
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != 0 {
t.Fatalf("Pristine boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, 0)
// Retrieve the sync progress and ensure they are zero (pristine sync)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != 0 {
t.Fatalf("Pristine progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, 0)
}
// Create and sync with an attacker that promises a higher chain than available
tester.newPeer("attack", protocol, hashes, headers, blocks, receipts)
@ -1469,31 +1508,36 @@ func testFakedSyncBoundaries(t *testing.T, protocol int, mode SyncMode) {
go func() {
defer pending.Done()
if err := tester.sync("attack", nil); err == nil {
if err := tester.sync("attack", nil, mode); err == nil {
t.Fatalf("succeeded attacker synchronisation")
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != uint64(targetBlocks+3) {
t.Fatalf("Initial boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, targetBlocks+3)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current != 0 || latest != uint64(targetBlocks+3) {
t.Fatalf("Initial progress mismatch: have %v/%v/%v, want %v/%v/%v", origin, current, latest, 0, 0, targetBlocks+3)
}
progress <- struct{}{}
pending.Wait()
// Synchronise with a good peer and check that the boundary height has been reduced to the true value
// Synchronise with a good peer and check that the progress height has been reduced to the true value
tester.newPeer("valid", protocol, hashes[3:], headers, blocks, receipts)
pending.Add(1)
go func() {
defer pending.Done()
if err := tester.sync("valid", nil); err != nil {
if err := tester.sync("valid", nil, mode); err != nil {
t.Fatalf("failed to synchronise blocks: %v", err)
}
}()
<-starting
if origin, latest := tester.downloader.Boundaries(); origin != 0 || latest != uint64(targetBlocks) {
t.Fatalf("Initial boundary mismatch: have %v/%v, want %v/%v", origin, latest, 0, targetBlocks)
if origin, current, latest := tester.downloader.Progress(); origin != 0 || current > uint64(targetBlocks) || latest != uint64(targetBlocks) {
t.Fatalf("Completing progress mismatch: have %v/%v/%v, want %v/0-%v/%v", origin, current, latest, 0, targetBlocks, targetBlocks)
}
progress <- struct{}{}
pending.Wait()
// Check final progress after successful sync
if origin, current, latest := tester.downloader.Progress(); origin > uint64(targetBlocks) || current != uint64(targetBlocks) || latest != uint64(targetBlocks) {
t.Fatalf("Final progress mismatch: have %v/%v/%v, want 0-%v/%v/%v", origin, current, latest, targetBlocks, targetBlocks, targetBlocks)
}
}

4
eth/downloader/modes.go
View File

@ -20,7 +20,7 @@ package downloader
type SyncMode int
const (
FullSync SyncMode = iota // Synchronise the entire block-chain history from full blocks
FastSync // Quikcly download the headers, full sync only at the chain head
FullSync SyncMode = iota // Synchronise the entire blockchain history from full blocks
FastSync // Quickly download the headers, full sync only at the chain head
LightSync // Download only the headers and terminate afterwards
)

28
eth/downloader/peer.go
View File

@ -124,6 +124,10 @@ func (p *peer) Reset() {
// Fetch61 sends a block retrieval request to the remote peer.
func (p *peer) Fetch61(request *fetchRequest) error {
// Sanity check the protocol version
if p.version != 61 {
panic(fmt.Sprintf("block fetch [eth/61] requested on eth/%d", p.version))
}
// Short circuit if the peer is already fetching
if !atomic.CompareAndSwapInt32(&p.blockIdle, 0, 1) {
return errAlreadyFetching
@ -142,6 +146,10 @@ func (p *peer) Fetch61(request *fetchRequest) error {
// FetchBodies sends a block body retrieval request to the remote peer.
func (p *peer) FetchBodies(request *fetchRequest) error {
// Sanity check the protocol version
if p.version < 62 {
panic(fmt.Sprintf("body fetch [eth/62+] requested on eth/%d", p.version))
}
// Short circuit if the peer is already fetching
if !atomic.CompareAndSwapInt32(&p.blockIdle, 0, 1) {
return errAlreadyFetching
@ -160,6 +168,10 @@ func (p *peer) FetchBodies(request *fetchRequest) error {
// FetchReceipts sends a receipt retrieval request to the remote peer.
func (p *peer) FetchReceipts(request *fetchRequest) error {
// Sanity check the protocol version
if p.version < 63 {
panic(fmt.Sprintf("body fetch [eth/63+] requested on eth/%d", p.version))
}
// Short circuit if the peer is already fetching
if !atomic.CompareAndSwapInt32(&p.receiptIdle, 0, 1) {
return errAlreadyFetching
@ -178,6 +190,10 @@ func (p *peer) FetchReceipts(request *fetchRequest) error {
// FetchNodeData sends a node state data retrieval request to the remote peer.
func (p *peer) FetchNodeData(request *fetchRequest) error {
// Sanity check the protocol version
if p.version < 63 {
panic(fmt.Sprintf("node data fetch [eth/63+] requested on eth/%d", p.version))
}
// Short circuit if the peer is already fetching
if !atomic.CompareAndSwapInt32(&p.stateIdle, 0, 1) {
return errAlreadyFetching
@ -196,35 +212,35 @@ func (p *peer) FetchNodeData(request *fetchRequest) error {
// SetBlocksIdle sets the peer to idle, allowing it to execute new retrieval requests.
// Its block retrieval allowance will also be updated either up- or downwards,
// depending on whether the previous fetch completed in time or not.
// depending on whether the previous fetch completed in time.
func (p *peer) SetBlocksIdle() {
p.setIdle(p.blockStarted, blockSoftTTL, blockHardTTL, MaxBlockFetch, &p.blockCapacity, &p.blockIdle)
}
// SetBodiesIdle sets the peer to idle, allowing it to execute new retrieval requests.
// Its block body retrieval allowance will also be updated either up- or downwards,
// depending on whether the previous fetch completed in time or not.
// depending on whether the previous fetch completed in time.
func (p *peer) SetBodiesIdle() {
p.setIdle(p.blockStarted, bodySoftTTL, bodyHardTTL, MaxBlockFetch, &p.blockCapacity, &p.blockIdle)
p.setIdle(p.blockStarted, bodySoftTTL, bodyHardTTL, MaxBodyFetch, &p.blockCapacity, &p.blockIdle)
}
// SetReceiptsIdle sets the peer to idle, allowing it to execute new retrieval requests.
// Its receipt retrieval allowance will also be updated either up- or downwards,
// depending on whether the previous fetch completed in time or not.
// depending on whether the previous fetch completed in time.
func (p *peer) SetReceiptsIdle() {
p.setIdle(p.receiptStarted, receiptSoftTTL, receiptHardTTL, MaxReceiptFetch, &p.receiptCapacity, &p.receiptIdle)
}
// SetNodeDataIdle sets the peer to idle, allowing it to execute new retrieval
// requests. Its node data retrieval allowance will also be updated either up- or
// downwards, depending on whether the previous fetch completed in time or not.
// downwards, depending on whether the previous fetch completed in time.
func (p *peer) SetNodeDataIdle() {
p.setIdle(p.stateStarted, stateSoftTTL, stateSoftTTL, MaxStateFetch, &p.stateCapacity, &p.stateIdle)
}
// setIdle sets the peer to idle, allowing it to execute new retrieval requests.
// Its data retrieval allowance will also be updated either up- or downwards,
// depending on whether the previous fetch completed in time or not.
// depending on whether the previous fetch completed in time.
func (p *peer) setIdle(started time.Time, softTTL, hardTTL time.Duration, maxFetch int, capacity, idle *int32) {
// Update the peer's download allowance based on previous performance
scale := 2.0

176
eth/downloader/queue.go
View File

@ -56,9 +56,8 @@ type fetchRequest struct {
Time time.Time // Time when the request was made
}
// fetchResult is the assembly collecting partial results from potentially more
// than one fetcher routines, until all outstanding retrievals complete and the
// result as a whole can be processed.
// fetchResult is a struct collecting partial results from data fetchers until
// all outstanding pieces complete and the result as a whole can be processed.
type fetchResult struct {
Pending int // Number of data fetches still pending
@ -89,7 +88,7 @@ type queue struct {
receiptPendPool map[string]*fetchRequest // [eth/63] Currently pending receipt retrieval operations
receiptDonePool map[common.Hash]struct{} // [eth/63] Set of the completed receipt fetches
stateTaskIndex int // [eth/63] Counter indexing the added hashes to ensure prioritized retrieval order
stateTaskIndex int // [eth/63] Counter indexing the added hashes to ensure prioritised retrieval order
stateTaskPool map[common.Hash]int // [eth/63] Pending node data retrieval tasks, mapping to their priority
stateTaskQueue *prque.Prque // [eth/63] Priority queue of the hashes to fetch the node data for
statePendPool map[string]*fetchRequest // [eth/63] Currently pending node data retrieval operations
@ -97,10 +96,10 @@ type queue struct {
stateDatabase ethdb.Database // [eth/63] Trie database to populate during state reassembly
stateScheduler *state.StateSync // [eth/63] State trie synchronisation scheduler and integrator
stateProcessors int32 // [eth/63] Number of currently running state processors
stateSchedLock sync.RWMutex // [eth/63] Lock serializing access to the state scheduler
stateSchedLock sync.RWMutex // [eth/63] Lock serialising access to the state scheduler
resultCache []*fetchResult // Downloaded but not yet delivered fetch results
resultOffset uint64 // Offset of the first cached fetch result in the block-chain
resultOffset uint64 // Offset of the first cached fetch result in the block chain
lock sync.RWMutex
}
@ -131,6 +130,9 @@ func (q *queue) Reset() {
q.lock.Lock()
defer q.lock.Unlock()
q.stateSchedLock.Lock()
defer q.stateSchedLock.Unlock()
q.mode = FullSync
q.fastSyncPivot = 0
@ -233,9 +235,17 @@ func (q *queue) Idle() bool {
return (queued + pending + cached) == 0
}
// ThrottleBlocks checks if the download should be throttled (active block (body)
// FastSyncPivot retrieves the currently used fast sync pivot point.
func (q *queue) FastSyncPivot() uint64 {
q.lock.RLock()
defer q.lock.RUnlock()
return q.fastSyncPivot
}
// ShouldThrottleBlocks checks if the download should be throttled (active block (body)
// fetches exceed block cache).
func (q *queue) ThrottleBlocks() bool {
func (q *queue) ShouldThrottleBlocks() bool {
q.lock.RLock()
defer q.lock.RUnlock()
@ -248,9 +258,9 @@ func (q *queue) ThrottleBlocks() bool {
return pending >= len(q.resultCache)-len(q.blockDonePool)
}
// ThrottleReceipts checks if the download should be throttled (active receipt
// ShouldThrottleReceipts checks if the download should be throttled (active receipt
// fetches exceed block cache).
func (q *queue) ThrottleReceipts() bool {
func (q *queue) ShouldThrottleReceipts() bool {
q.lock.RLock()
defer q.lock.RUnlock()
@ -269,7 +279,7 @@ func (q *queue) Schedule61(hashes []common.Hash, fifo bool) []common.Hash {
q.lock.Lock()
defer q.lock.Unlock()
// Insert all the hashes prioritized in the arrival order
// Insert all the hashes prioritised in the arrival order
inserts := make([]common.Hash, 0, len(hashes))
for _, hash := range hashes {
// Skip anything we already have
@ -297,10 +307,10 @@ func (q *queue) Schedule(headers []*types.Header, from uint64) []*types.Header {
q.lock.Lock()
defer q.lock.Unlock()
// Insert all the headers prioritized by the contained block number
// Insert all the headers prioritised by the contained block number
inserts := make([]*types.Header, 0, len(headers))
for _, header := range headers {
// Make sure chain order is honored and preserved throughout
// Make sure chain order is honoured and preserved throughout
hash := header.Hash()
if header.Number == nil || header.Number.Uint64() != from {
glog.V(logger.Warn).Infof("Header #%v [%x] broke chain ordering, expected %d", header.Number, hash[:4], from)
@ -347,19 +357,29 @@ func (q *queue) GetHeadResult() *fetchResult {
q.lock.RLock()
defer q.lock.RUnlock()
// If there are no results pending, return nil
if len(q.resultCache) == 0 || q.resultCache[0] == nil {
return nil
}
// If the next result is still incomplete, return nil
if q.resultCache[0].Pending > 0 {
return nil
}
// If the next result is the fast sync pivot...
if q.mode == FastSync && q.resultCache[0].Header.Number.Uint64() == q.fastSyncPivot {
// If the pivot state trie is still being pulled, return nil
if len(q.stateTaskPool) > 0 {
return nil
}
if q.PendingNodeData() > 0 {
return nil
}
// If the state is done, but not enough post-pivot headers were verified, stall...
for i := 0; i < fsHeaderForceVerify; i++ {
if i+1 >= len(q.resultCache) || q.resultCache[i+1] == nil {
return nil
}
}
}
return q.resultCache[0]
}
@ -372,7 +392,7 @@ func (q *queue) TakeResults() []*fetchResult {
// Accumulate all available results
results := []*fetchResult{}
for _, result := range q.resultCache {
for i, result := range q.resultCache {
// Stop if no more results are ready
if result == nil || result.Pending > 0 {
break
@ -385,6 +405,16 @@ func (q *queue) TakeResults() []*fetchResult {
if q.PendingNodeData() > 0 {
break
}
// Even is state fetch is done, ensure post-pivot headers passed verifications
safe := true
for j := 0; j < fsHeaderForceVerify; j++ {
if i+j+1 >= len(q.resultCache) || q.resultCache[i+j+1] == nil {
safe = false
}
}
if !safe {
break
}
}
// If we've just inserted the fast sync pivot, stop as the following batch needs different insertion
if q.mode == FastSync && result.Header.Number.Uint64() == q.fastSyncPivot+1 && len(results) > 0 {
@ -411,6 +441,9 @@ func (q *queue) TakeResults() []*fetchResult {
// ReserveBlocks reserves a set of block hashes for the given peer, skipping any
// previously failed download.
func (q *queue) ReserveBlocks(p *peer, count int) *fetchRequest {
q.lock.Lock()
defer q.lock.Unlock()
return q.reserveHashes(p, count, q.hashQueue, nil, q.blockPendPool, len(q.resultCache)-len(q.blockDonePool))
}
@ -430,17 +463,21 @@ func (q *queue) ReserveNodeData(p *peer, count int) *fetchRequest {
}
}
}
q.lock.Lock()
defer q.lock.Unlock()
return q.reserveHashes(p, count, q.stateTaskQueue, generator, q.statePendPool, count)
}
// reserveHashes reserves a set of hashes for the given peer, skipping previously
// failed ones.
//
// Note, this method expects the queue lock to be already held for writing. The
// reason the lock is not obtained in here is because the parameters already need
// to access the queue, so they already need a lock anyway.
func (q *queue) reserveHashes(p *peer, count int, taskQueue *prque.Prque, taskGen func(int), pendPool map[string]*fetchRequest, maxPending int) *fetchRequest {
q.lock.Lock()
defer q.lock.Unlock()
// Short circuit if the peer's already downloading something (sanity check not
// to corrupt state)
// Short circuit if the peer's already downloading something (sanity check to
// not corrupt state)
if _, ok := pendPool[p.id]; ok {
return nil
}
@ -492,30 +529,37 @@ func (q *queue) reserveHashes(p *peer, count int, taskQueue *prque.Prque, taskGe
// previously failed downloads. Beside the next batch of needed fetches, it also
// returns a flag whether empty blocks were queued requiring processing.
func (q *queue) ReserveBodies(p *peer, count int) (*fetchRequest, bool, error) {
noop := func(header *types.Header) bool {
isNoop := func(header *types.Header) bool {
return header.TxHash == types.EmptyRootHash && header.UncleHash == types.EmptyUncleHash
}
return q.reserveHeaders(p, count, q.blockTaskPool, q.blockTaskQueue, q.blockPendPool, q.blockDonePool, noop)
q.lock.Lock()
defer q.lock.Unlock()
return q.reserveHeaders(p, count, q.blockTaskPool, q.blockTaskQueue, q.blockPendPool, q.blockDonePool, isNoop)
}
// ReserveReceipts reserves a set of receipt fetches for the given peer, skipping
// any previously failed downloads. Beside the next batch of needed fetches, it
// also returns a flag whether empty receipts were queued requiring importing.
func (q *queue) ReserveReceipts(p *peer, count int) (*fetchRequest, bool, error) {
noop := func(header *types.Header) bool {
isNoop := func(header *types.Header) bool {
return header.ReceiptHash == types.EmptyRootHash
}
return q.reserveHeaders(p, count, q.receiptTaskPool, q.receiptTaskQueue, q.receiptPendPool, q.receiptDonePool, noop)
q.lock.Lock()
defer q.lock.Unlock()
return q.reserveHeaders(p, count, q.receiptTaskPool, q.receiptTaskQueue, q.receiptPendPool, q.receiptDonePool, isNoop)
}
// reserveHeaders reserves a set of data download operations for a given peer,
// skipping any previously failed ones. This method is a generic version used
// by the individual special reservation functions.
//
// Note, this method expects the queue lock to be already held for writing. The
// reason the lock is not obtained in here is because the parameters already need
// to access the queue, so they already need a lock anyway.
func (q *queue) reserveHeaders(p *peer, count int, taskPool map[common.Hash]*types.Header, taskQueue *prque.Prque,
pendPool map[string]*fetchRequest, donePool map[common.Hash]struct{}, noop func(*types.Header) bool) (*fetchRequest, bool, error) {
q.lock.Lock()
defer q.lock.Unlock()
pendPool map[string]*fetchRequest, donePool map[common.Hash]struct{}, isNoop func(*types.Header) bool) (*fetchRequest, bool, error) {
// Short circuit if the pool has been depleted, or if the peer's already
// downloading something (sanity check not to corrupt state)
if taskQueue.Empty() {
@ -537,7 +581,7 @@ func (q *queue) reserveHeaders(p *peer, count int, taskPool map[common.Hash]*typ
for proc := 0; proc < space && len(send) < count && !taskQueue.Empty(); proc++ {
header := taskQueue.PopItem().(*types.Header)
// If we're the first to request this task, initialize the result container
// If we're the first to request this task, initialise the result container
index := int(header.Number.Int64() - int64(q.resultOffset))
if index >= len(q.resultCache) || index < 0 {
return nil, false, errInvalidChain
@ -553,7 +597,7 @@ func (q *queue) reserveHeaders(p *peer, count int, taskPool map[common.Hash]*typ
}
}
// If this fetch task is a noop, skip this fetch operation
if noop(header) {
if isNoop(header) {
donePool[header.Hash()] = struct{}{}
delete(taskPool, header.Hash())
@ -562,7 +606,7 @@ func (q *queue) reserveHeaders(p *peer, count int, taskPool map[common.Hash]*typ
progress = true
continue
}
// Otherwise if not a known unknown block, add to the retrieve list
// Otherwise unless the peer is known not to have the data, add to the retrieve list
if p.ignored.Has(header.Hash()) {
skip = append(skip, header)
} else {
@ -655,35 +699,48 @@ func (q *queue) Revoke(peerId string) {
}
// ExpireBlocks checks for in flight requests that exceeded a timeout allowance,
// canceling them and returning the responsible peers for penalization.
// canceling them and returning the responsible peers for penalisation.
func (q *queue) ExpireBlocks(timeout time.Duration) []string {
q.lock.Lock()
defer q.lock.Unlock()
return q.expire(timeout, q.blockPendPool, q.hashQueue, blockTimeoutMeter)
}
// ExpireBodies checks for in flight block body requests that exceeded a timeout
// allowance, canceling them and returning the responsible peers for penalization.
// allowance, canceling them and returning the responsible peers for penalisation.
func (q *queue) ExpireBodies(timeout time.Duration) []string {
q.lock.Lock()
defer q.lock.Unlock()
return q.expire(timeout, q.blockPendPool, q.blockTaskQueue, bodyTimeoutMeter)
}
// ExpireReceipts checks for in flight receipt requests that exceeded a timeout
// allowance, canceling them and returning the responsible peers for penalization.
// allowance, canceling them and returning the responsible peers for penalisation.
func (q *queue) ExpireReceipts(timeout time.Duration) []string {
q.lock.Lock()
defer q.lock.Unlock()
return q.expire(timeout, q.receiptPendPool, q.receiptTaskQueue, receiptTimeoutMeter)
}
// ExpireNodeData checks for in flight node data requests that exceeded a timeout
// allowance, canceling them and returning the responsible peers for penalization.
// allowance, canceling them and returning the responsible peers for penalisation.
func (q *queue) ExpireNodeData(timeout time.Duration) []string {
q.lock.Lock()
defer q.lock.Unlock()
return q.expire(timeout, q.statePendPool, q.stateTaskQueue, stateTimeoutMeter)
}
// expire is the generic check that move expired tasks from a pending pool back
// into a task pool, returning all entities caught with expired tasks.
//
// Note, this method expects the queue lock to be already held for writing. The
// reason the lock is not obtained in here is because the parameters already need
// to access the queue, so they already need a lock anyway.
func (q *queue) expire(timeout time.Duration, pendPool map[string]*fetchRequest, taskQueue *prque.Prque, timeoutMeter metrics.Meter) []string {
q.lock.Lock()
defer q.lock.Unlock()
// Iterate over the expired requests and return each to the queue
peers := []string{}
for id, request := range pendPool {
@ -764,7 +821,7 @@ func (q *queue) DeliverBlocks(id string, blocks []*types.Block) error {
case len(errs) == 1 && (errs[0] == errInvalidChain || errs[0] == errInvalidBlock):
return errs[0]
case len(errs) == len(request.Headers):
case len(errs) == len(blocks):
return errStaleDelivery
default:
@ -774,6 +831,9 @@ func (q *queue) DeliverBlocks(id string, blocks []*types.Block) error {
// DeliverBodies injects a block body retrieval response into the results queue.
func (q *queue) DeliverBodies(id string, txLists [][]*types.Transaction, uncleLists [][]*types.Header) error {
q.lock.Lock()
defer q.lock.Unlock()
reconstruct := func(header *types.Header, index int, result *fetchResult) error {
if types.DeriveSha(types.Transactions(txLists[index])) != header.TxHash || types.CalcUncleHash(uncleLists[index]) != header.UncleHash {
return errInvalidBody
@ -787,6 +847,9 @@ func (q *queue) DeliverBodies(id string, txLists [][]*types.Transaction, uncleLi
// DeliverReceipts injects a receipt retrieval response into the results queue.
func (q *queue) DeliverReceipts(id string, receiptList [][]*types.Receipt) error {
q.lock.Lock()
defer q.lock.Unlock()
reconstruct := func(header *types.Header, index int, result *fetchResult) error {
if types.DeriveSha(types.Receipts(receiptList[index])) != header.ReceiptHash {
return errInvalidReceipt
@ -798,11 +861,12 @@ func (q *queue) DeliverReceipts(id string, receiptList [][]*types.Receipt) error
}
// deliver injects a data retrieval response into the results queue.
//
// Note, this method expects the queue lock to be already held for writing. The
// reason the lock is not obtained in here is because the parameters already need
// to access the queue, so they already need a lock anyway.
func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header, taskQueue *prque.Prque, pendPool map[string]*fetchRequest,
donePool map[common.Hash]struct{}, reqTimer metrics.Timer, results int, reconstruct func(header *types.Header, index int, result *fetchResult) error) error {
q.lock.Lock()
defer q.lock.Unlock()
// Short circuit if the data was never requested
request := pendPool[id]
if request == nil {
@ -818,7 +882,10 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header, taskQ
}
}
// Assemble each of the results with their headers and retrieved data parts
errs := make([]error, 0)
var (
failure error
useful bool
)
for i, header := range request.Headers {
// Short circuit assembly if no more fetch results are found
if i >= results {
@ -827,15 +894,16 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header, taskQ
// Reconstruct the next result if contents match up
index := int(header.Number.Int64() - int64(q.resultOffset))
if index >= len(q.resultCache) || index < 0 || q.resultCache[index] == nil {
errs = []error{errInvalidChain}
failure = errInvalidChain
break
}
if err := reconstruct(header, i, q.resultCache[index]); err != nil {
errs = []error{err}
failure = err
break
}
donePool[header.Hash()] = struct{}{}
q.resultCache[index].Pending--
useful = true
// Clean up a successful fetch
request.Headers[i] = nil
@ -847,19 +915,16 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header, taskQ
taskQueue.Push(header, -float32(header.Number.Uint64()))
}
}
// If none of the blocks were good, it's a stale delivery
// If none of the data was good, it's a stale delivery
switch {
case len(errs) == 0:
return nil
case failure == nil || failure == errInvalidChain:
return failure
case len(errs) == 1 && (errs[0] == errInvalidChain || errs[0] == errInvalidBody || errs[0] == errInvalidReceipt):
return errs[0]
case len(errs) == len(request.Headers):
return errStaleDelivery
case useful:
return fmt.Errorf("partial failure: %v", failure)
default:
return fmt.Errorf("multiple failures: %v", errs)
return errStaleDelivery
}
}
@ -876,7 +941,7 @@ func (q *queue) DeliverNodeData(id string, data [][]byte, callback func(error, i
stateReqTimer.UpdateSince(request.Time)
delete(q.statePendPool, id)
// If no data was retrieved, mark them as unavailable for the origin peer
// If no data was retrieved, mark their hashes as unavailable for the origin peer
if len(data) == 0 {
for hash, _ := range request.Hashes {
request.Peer.ignored.Add(hash)
@ -955,9 +1020,6 @@ func (q *queue) Prepare(offset uint64, mode SyncMode, pivot uint64) {
if q.resultOffset < offset {
q.resultOffset = offset
}
q.fastSyncPivot = 0
if mode == FastSync {
q.fastSyncPivot = pivot
}
q.mode = mode
}

20
eth/fetcher/fetcher.go
View File

@ -142,6 +142,8 @@ type Fetcher struct {
dropPeer peerDropFn // Drops a peer for misbehaving
// Testing hooks
announceChangeHook func(common.Hash, bool) // Method to call upon adding or deleting a hash from the announce list
queueChangeHook func(common.Hash, bool) // Method to call upon adding or deleting a block from the import queue
fetchingHook func([]common.Hash) // Method to call upon starting a block (eth/61) or header (eth/62) fetch
completingHook func([]common.Hash) // Method to call upon starting a block body fetch (eth/62)
importedHook func(*types.Block) // Method to call upon successful block import (both eth/61 and eth/62)
@ -324,11 +326,16 @@ func (f *Fetcher) loop() {
height := f.chainHeight()
for !f.queue.Empty() {
op := f.queue.PopItem().(*inject)
if f.queueChangeHook != nil {
f.queueChangeHook(op.block.Hash(), false)
}
// If too high up the chain or phase, continue later
number := op.block.NumberU64()
if number > height+1 {
f.queue.Push(op, -float32(op.block.NumberU64()))
if f.queueChangeHook != nil {
f.queueChangeHook(op.block.Hash(), true)
}
break
}
// Otherwise if fresh and still unknown, try and import
@ -372,6 +379,9 @@ func (f *Fetcher) loop() {
}
f.announces[notification.origin] = count
f.announced[notification.hash] = append(f.announced[notification.hash], notification)
if f.announceChangeHook != nil && len(f.announced[notification.hash]) == 1 {
f.announceChangeHook(notification.hash, true)
}
if len(f.announced) == 1 {
f.rescheduleFetch(fetchTimer)
}
@ -714,7 +724,9 @@ func (f *Fetcher) enqueue(peer string, block *types.Block) {
f.queues[peer] = count
f.queued[hash] = op
f.queue.Push(op, -float32(block.NumberU64()))
if f.queueChangeHook != nil {
f.queueChangeHook(op.block.Hash(), true)
}
if glog.V(logger.Debug) {
glog.Infof("Peer %s: queued block #%d [%x…], total %v", peer, block.NumberU64(), hash.Bytes()[:4], f.queue.Size())
}
@ -781,7 +793,9 @@ func (f *Fetcher) forgetHash(hash common.Hash) {
}
}
delete(f.announced, hash)
if f.announceChangeHook != nil {
f.announceChangeHook(hash, false)
}
// Remove any pending fetches and decrement the DOS counters
if announce := f.fetching[hash]; announce != nil {
f.announces[announce.origin]--

49
eth/fetcher/fetcher_test.go
View File

@ -145,6 +145,9 @@ func (f *fetcherTester) insertChain(blocks types.Blocks) (int, error) {
// dropPeer is an emulator for the peer removal, simply accumulating the various
// peers dropped by the fetcher.
func (f *fetcherTester) dropPeer(peer string) {
f.lock.Lock()
defer f.lock.Unlock()
f.drops[peer] = true
}
@ -608,8 +611,11 @@ func TestDistantPropagationDiscarding(t *testing.T) {
// Create a tester and simulate a head block being the middle of the above chain
tester := newTester()
tester.lock.Lock()
tester.hashes = []common.Hash{head}
tester.blocks = map[common.Hash]*types.Block{head: blocks[head]}
tester.lock.Unlock()
// Ensure that a block with a lower number than the threshold is discarded
tester.fetcher.Enqueue("lower", blocks[hashes[low]])
@ -641,8 +647,11 @@ func testDistantAnnouncementDiscarding(t *testing.T, protocol int) {
// Create a tester and simulate a head block being the middle of the above chain
tester := newTester()
tester.lock.Lock()
tester.hashes = []common.Hash{head}
tester.blocks = map[common.Hash]*types.Block{head: blocks[head]}
tester.lock.Unlock()
headerFetcher := tester.makeHeaderFetcher(blocks, -gatherSlack)
bodyFetcher := tester.makeBodyFetcher(blocks, 0)
@ -687,14 +696,22 @@ func testInvalidNumberAnnouncement(t *testing.T, protocol int) {
tester.fetcher.Notify("bad", hashes[0], 2, time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
verifyImportEvent(t, imported, false)
if !tester.drops["bad"] {
tester.lock.RLock()
dropped := tester.drops["bad"]
tester.lock.RUnlock()
if !dropped {
t.Fatalf("peer with invalid numbered announcement not dropped")
}
// Make sure a good announcement passes without a drop
tester.fetcher.Notify("good", hashes[0], 1, time.Now().Add(-arriveTimeout), nil, headerFetcher, bodyFetcher)
verifyImportEvent(t, imported, true)
if tester.drops["good"] {
tester.lock.RLock()
dropped = tester.drops["good"]
tester.lock.RUnlock()
if dropped {
t.Fatalf("peer with valid numbered announcement dropped")
}
verifyImportDone(t, imported)
@ -752,9 +769,15 @@ func testHashMemoryExhaustionAttack(t *testing.T, protocol int) {
// Create a tester with instrumented import hooks
tester := newTester()
imported := make(chan *types.Block)
imported, announces := make(chan *types.Block), int32(0)
tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
tester.fetcher.announceChangeHook = func(hash common.Hash, added bool) {
if added {
atomic.AddInt32(&announces, 1)
} else {
atomic.AddInt32(&announces, -1)
}
}
// Create a valid chain and an infinite junk chain
targetBlocks := hashLimit + 2*maxQueueDist
hashes, blocks := makeChain(targetBlocks, 0, genesis)
@ -782,8 +805,8 @@ func testHashMemoryExhaustionAttack(t *testing.T, protocol int) {
tester.fetcher.Notify("attacker", attack[i], 1 /* don't distance drop */, time.Now(), nil, attackerHeaderFetcher, attackerBodyFetcher)
}
}
if len(tester.fetcher.announced) != hashLimit+maxQueueDist {
t.Fatalf("queued announce count mismatch: have %d, want %d", len(tester.fetcher.announced), hashLimit+maxQueueDist)
if count := atomic.LoadInt32(&announces); count != hashLimit+maxQueueDist {
t.Fatalf("queued announce count mismatch: have %d, want %d", count, hashLimit+maxQueueDist)
}
// Wait for fetches to complete
verifyImportCount(t, imported, maxQueueDist)
@ -807,9 +830,15 @@ func TestBlockMemoryExhaustionAttack(t *testing.T) {
// Create a tester with instrumented import hooks
tester := newTester()
imported := make(chan *types.Block)
imported, enqueued := make(chan *types.Block), int32(0)
tester.fetcher.importedHook = func(block *types.Block) { imported <- block }
tester.fetcher.queueChangeHook = func(hash common.Hash, added bool) {
if added {
atomic.AddInt32(&enqueued, 1)
} else {
atomic.AddInt32(&enqueued, -1)
}
}
// Create a valid chain and a batch of dangling (but in range) blocks
targetBlocks := hashLimit + 2*maxQueueDist
hashes, blocks := makeChain(targetBlocks, 0, genesis)
@ -825,7 +854,7 @@ func TestBlockMemoryExhaustionAttack(t *testing.T) {
tester.fetcher.Enqueue("attacker", block)
}
time.Sleep(200 * time.Millisecond)
if queued := tester.fetcher.queue.Size(); queued != blockLimit {
if queued := atomic.LoadInt32(&enqueued); queued != blockLimit {
t.Fatalf("queued block count mismatch: have %d, want %d", queued, blockLimit)
}
// Queue up a batch of valid blocks, and check that a new peer is allowed to do so
@ -833,7 +862,7 @@ func TestBlockMemoryExhaustionAttack(t *testing.T) {
tester.fetcher.Enqueue("valid", blocks[hashes[len(hashes)-3-i]])
}
time.Sleep(100 * time.Millisecond)
if queued := tester.fetcher.queue.Size(); queued != blockLimit+maxQueueDist-1 {
if queued := atomic.LoadInt32(&enqueued); queued != blockLimit+maxQueueDist-1 {
t.Fatalf("queued block count mismatch: have %d, want %d", queued, blockLimit+maxQueueDist-1)
}
// Insert the missing piece (and sanity check the import)

33
eth/filters/filter_test.go
View File

@ -16,9 +16,9 @@ import (
func makeReceipt(addr common.Address) *types.Receipt {
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{Address: addr},
})
}
receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
return receipt
}
@ -41,7 +41,7 @@ func BenchmarkMipmaps(b *testing.B) {
defer db.Close()
genesis := core.WriteGenesisBlockForTesting(db, core.GenesisAccount{addr1, big.NewInt(1000000)})
chain := core.GenerateChain(genesis, db, 100010, func(i int, gen *core.BlockGen) {
chain, receipts := core.GenerateChain(genesis, db, 100010, func(i int, gen *core.BlockGen) {
var receipts types.Receipts
switch i {
case 2403:
@ -70,7 +70,7 @@ func BenchmarkMipmaps(b *testing.B) {
}
core.WriteMipmapBloom(db, uint64(i+1), receipts)
})
for _, block := range chain {
for i, block := range chain {
core.WriteBlock(db, block)
if err := core.WriteCanonicalHash(db, block.Hash(), block.NumberU64()); err != nil {
b.Fatalf("failed to insert block number: %v", err)
@ -78,11 +78,10 @@ func BenchmarkMipmaps(b *testing.B) {
if err := core.WriteHeadBlockHash(db, block.Hash()); err != nil {
b.Fatalf("failed to insert block number: %v", err)
}
if err := core.PutBlockReceipts(db, block, block.Receipts()); err != nil {
if err := core.PutBlockReceipts(db, block.Hash(), receipts[i]); err != nil {
b.Fatal("error writing block receipts:", err)
}
}
b.ResetTimer()
filter := New(db)
@ -118,47 +117,47 @@ func TestFilters(t *testing.T) {
defer db.Close()
genesis := core.WriteGenesisBlockForTesting(db, core.GenesisAccount{addr, big.NewInt(1000000)})
chain := core.GenerateChain(genesis, db, 1000, func(i int, gen *core.BlockGen) {
chain, receipts := core.GenerateChain(genesis, db, 1000, func(i int, gen *core.BlockGen) {
var receipts types.Receipts
switch i {
case 1:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{
Address: addr,
Topics: []common.Hash{hash1},
},
})
}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
case 2:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{
Address: addr,
Topics: []common.Hash{hash2},
},
})
}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
case 998:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{
Address: addr,
Topics: []common.Hash{hash3},
},
})
}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
case 999:
receipt := types.NewReceipt(nil, new(big.Int))
receipt.SetLogs(vm.Logs{
receipt.Logs = vm.Logs{
&vm.Log{
Address: addr,
Topics: []common.Hash{hash4},
},
})
}
gen.AddUncheckedReceipt(receipt)
receipts = types.Receipts{receipt}
}
@ -173,7 +172,7 @@ func TestFilters(t *testing.T) {
// by one
core.WriteMipmapBloom(db, uint64(i+1), receipts)
})
for _, block := range chain {
for i, block := range chain {
core.WriteBlock(db, block)
if err := core.WriteCanonicalHash(db, block.Hash(), block.NumberU64()); err != nil {
t.Fatalf("failed to insert block number: %v", err)
@ -181,7 +180,7 @@ func TestFilters(t *testing.T) {
if err := core.WriteHeadBlockHash(db, block.Hash()); err != nil {
t.Fatalf("failed to insert block number: %v", err)
}
if err := core.PutBlockReceipts(db, block, block.Receipts()); err != nil {
if err := core.PutBlockReceipts(db, block.Hash(), receipts[i]); err != nil {
t.Fatal("error writing block receipts:", err)
}
}

17
eth/handler.go
View File

@ -84,6 +84,11 @@ type ProtocolManager struct {
// NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable
// with the ethereum network.
func NewProtocolManager(fastSync bool, networkId int, mux *event.TypeMux, txpool txPool, pow pow.PoW, blockchain *core.BlockChain, chaindb ethdb.Database) (*ProtocolManager, error) {
// Figure out whether to allow fast sync or not
if fastSync && blockchain.CurrentBlock().NumberU64() > 0 {
glog.V(logger.Info).Infof("blockchain not empty, fast sync disabled")
fastSync = false
}
// Create the protocol manager with the base fields
manager := &ProtocolManager{
fastSync: fastSync,
@ -103,7 +108,7 @@ func NewProtocolManager(fastSync bool, networkId int, mux *event.TypeMux, txpool
if fastSync && version < eth63 {
continue
}
// Compatible, initialize the sub-protocol
// Compatible; initialise the sub-protocol
version := version // Closure for the run
manager.SubProtocols = append(manager.SubProtocols, p2p.Protocol{
Name: "eth",
@ -120,13 +125,9 @@ func NewProtocolManager(fastSync bool, networkId int, mux *event.TypeMux, txpool
return nil, errIncompatibleConfig
}
// Construct the different synchronisation mechanisms
syncMode := downloader.FullSync
if fastSync {
syncMode = downloader.FastSync
}
manager.downloader = downloader.New(syncMode, chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlock, blockchain.GetHeader,
blockchain.GetBlock, blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead,
blockchain.GetTd, blockchain.InsertHeaderChain, blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback, manager.removePeer)
manager.downloader = downloader.New(chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlock, blockchain.GetHeader, blockchain.GetBlock,
blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead, blockchain.GetTd,
blockchain.InsertHeaderChain, blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback, manager.removePeer)
validator := func(block *types.Block, parent *types.Block) error {
return core.ValidateHeader(pow, block.Header(), parent.Header(), true, false)

2
eth/handler_test.go
View File

@ -443,8 +443,10 @@ func testGetNodeData(t *testing.T, protocol int) {
// Fetch for now the entire chain db
hashes := []common.Hash{}
for _, key := range pm.chaindb.(*ethdb.MemDatabase).Keys() {
if len(key) == len(common.Hash{}) {
hashes = append(hashes, common.BytesToHash(key))
}
}
p2p.Send(peer.app, 0x0d, hashes)
msg, err := peer.app.ReadMsg()
if err != nil {

2
eth/metrics.go
View File

@ -101,7 +101,7 @@ func (rw *meteredMsgReadWriter) ReadMsg() (p2p.Msg, error) {
packets, traffic = reqBlockInPacketsMeter, reqBlockInTrafficMeter
case rw.version >= eth62 && msg.Code == BlockHeadersMsg:
packets, traffic = reqBlockInPacketsMeter, reqBlockInTrafficMeter
packets, traffic = reqHeaderInPacketsMeter, reqHeaderInTrafficMeter
case rw.version >= eth62 && msg.Code == BlockBodiesMsg:
packets, traffic = reqBodyInPacketsMeter, reqBodyInTrafficMeter

18
eth/sync.go
View File

@ -22,6 +22,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/p2p/discover"
@ -165,5 +166,20 @@ func (pm *ProtocolManager) synchronise(peer *peer) {
return
}
// Otherwise try to sync with the downloader
pm.downloader.Synchronise(peer.id, peer.Head(), peer.Td())
mode := downloader.FullSync
if pm.fastSync {
mode = downloader.FastSync
}
pm.downloader.Synchronise(peer.id, peer.Head(), peer.Td(), mode)
// If fast sync was enabled, and we synced up, disable it
if pm.fastSync {
for pm.downloader.Synchronising() {
time.Sleep(100 * time.Millisecond)
}
if pm.blockchain.CurrentBlock().NumberU64() > 0 {
glog.V(logger.Info).Infof("fast sync complete, auto disabling")
pm.fastSync = false
}
}
}

53
eth/sync_test.go Normal file
View File

@ -0,0 +1,53 @@
// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package eth
import (
"testing"
"time"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
)
// Tests that fast sync gets disabled as soon as a real block is successfully
// imported into the blockchain.
func TestFastSyncDisabling(t *testing.T) {
// Create a pristine protocol manager, check that fast sync is left enabled
pmEmpty := newTestProtocolManagerMust(t, true, 0, nil, nil)
if !pmEmpty.fastSync {
t.Fatalf("fast sync disabled on pristine blockchain")
}
// Create a full protocol manager, check that fast sync gets disabled
pmFull := newTestProtocolManagerMust(t, true, 1024, nil, nil)
if pmFull.fastSync {
t.Fatalf("fast sync not disabled on non-empty blockchain")
}
// Sync up the two peers
io1, io2 := p2p.MsgPipe()
go pmFull.handle(pmFull.newPeer(63, NetworkId, p2p.NewPeer(discover.NodeID{}, "empty", nil), io2))
go pmEmpty.handle(pmEmpty.newPeer(63, NetworkId, p2p.NewPeer(discover.NodeID{}, "full", nil), io1))
time.Sleep(250 * time.Millisecond)
pmEmpty.synchronise(pmEmpty.peers.BestPeer())
// Check that fast sync was disabled
if pmEmpty.fastSync {
t.Fatalf("fast sync not disabled after successful synchronisation")
}
}

10
ethdb/memory_database.go
View File

@ -17,6 +17,7 @@
package ethdb
import (
"errors"
"fmt"
"sync"
@ -56,7 +57,10 @@ func (db *MemDatabase) Get(key []byte) ([]byte, error) {
db.lock.RLock()
defer db.lock.RUnlock()
return db.db[string(key)], nil
if entry, ok := db.db[string(key)]; ok {
return entry, nil
}
return nil, errors.New("not found")
}
func (db *MemDatabase) Keys() [][]byte {
@ -132,8 +136,8 @@ func (b *memBatch) Write() error {
b.lock.RLock()
defer b.lock.RUnlock()
b.db.lock.RLock()
defer b.db.lock.RUnlock()
b.db.lock.Lock()
defer b.db.lock.Unlock()
for _, kv := range b.writes {
b.db.db[string(kv.k)] = kv.v

4
rpc/api/eth.go
View File

@ -168,9 +168,7 @@ func (self *ethApi) IsMining(req *shared.Request) (interface{}, error) {
}
func (self *ethApi) IsSyncing(req *shared.Request) (interface{}, error) {
current := self.ethereum.BlockChain().CurrentBlock().NumberU64()
origin, height := self.ethereum.Downloader().Boundaries()
origin, current, height := self.ethereum.Downloader().Progress()
if current < height {
return map[string]interface{}{
"startingBlock": newHexNum(big.NewInt(int64(origin)).Bytes()),

2
trie/sync.go
View File

@ -31,7 +31,7 @@ type request struct {
object *node // Target node to populate with retrieved data (hashnode originally)
parents []*request // Parent state nodes referencing this entry (notify all upon completion)
depth int // Depth level within the trie the node is located to prioritize DFS
depth int // Depth level within the trie the node is located to prioritise DFS
deps int // Number of dependencies before allowed to commit this node
callback TrieSyncLeafCallback // Callback to invoke if a leaf node it reached on this branch