func blockRecovery(ctx *cli.Context) {
if len(ctx.Args()) < 1 {
glog.Fatal("recover requires block number or hash")
}
arg := ctx.Args().First()
cfg := utils.MakeEthConfig(ClientIdentifier, nodeNameVersion, ctx)
blockDb, err := ethdb.NewLDBDatabase(filepath.Join(cfg.DataDir, "blockchain"), cfg.DatabaseCache)
if err != nil {
glog.Fatalln("could not open db:", err)
}
var block *types.Block
if arg[0] == '#' {
block = core.GetBlock(blockDb, core.GetCanonicalHash(blockDb, common.String2Big(arg[1:]).Uint64()))
} else {
block = core.GetBlock(blockDb, common.HexToHash(arg))
}
if block == nil {
glog.Fatalln("block not found. Recovery failed")
}
if err = core.WriteHeadBlockHash(blockDb, block.Hash()); err != nil {
glog.Fatalln("block write err", err)
}
glog.Infof("Recovery succesful. New HEAD %x\n", block.Hash())
}
// insert injects a block into the current chain block chain. Note, this function
// assumes that the `mu` mutex is held!
func (bc *ChainManager) insert(block *types.Block) {
err := WriteHead(bc.chainDb, block)
if err != nil {
glog.Fatal("db write fail:", err)
}
bc.checkpoint++
if bc.checkpoint > checkpointLimit {
err = bc.chainDb.Put([]byte("checkpoint"), block.Hash().Bytes())
if err != nil {
glog.Fatal("db write fail:", err)
}
bc.checkpoint = 0
}
bc.currentBlock = block
bc.lastBlockHash = block.Hash()
}
// Flush flushes the trie to the backing layer. If this is a leveldb instance
// we'll use a batched write, otherwise we'll use regular put.
func (self *Cache) Flush() {
if db, ok := self.backend.(*ethdb.LDBDatabase); ok {
if err := db.LDB().Write(self.batch, nil); err != nil {
glog.Fatal("db write err:", err)
}
} else {
for k, v := range self.store {
self.backend.Put([]byte(k), v)
}
}
}
func NewChainManager(chainDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error) {
cache, _ := lru.New(blockCacheLimit)
bc := &ChainManager{
chainDb: chainDb,
eventMux: mux,
quit: make(chan struct{}),
cache: cache,
pow: pow,
}
bc.genesisBlock = bc.GetBlockByNumber(0)
if bc.genesisBlock == nil {
reader, err := NewDefaultGenesisReader()
if err != nil {
return nil, err
}
bc.genesisBlock, err = WriteGenesisBlock(chainDb, reader)
if err != nil {
return nil, err
}
glog.V(logger.Info).Infoln("WARNING: Wrote default expanse genesis block")
}
if err := bc.setLastState(); err != nil {
return nil, err
}
// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
for hash, _ := range BadHashes {
if block := bc.GetBlock(hash); block != nil {
glog.V(logger.Error).Infof("Found bad hash. Reorganising chain to state %x\n", block.ParentHash().Bytes()[:4])
block = bc.GetBlock(block.ParentHash())
if block == nil {
glog.Fatal("Unable to complete. Parent block not found. Corrupted DB?")
}
bc.SetHead(block)
glog.V(logger.Error).Infoln("Chain reorg was successfull. Resuming normal operation")
}
}
// Take ownership of this particular state
bc.futureBlocks, _ = lru.New(maxFutureBlocks)
bc.makeCache()
go bc.update()
return bc, nil
}
// WriteBlock writes a block to the database
func WriteBlock(db common.Database, block *types.Block) error {
tstart := time.Now()
enc, _ := rlp.EncodeToBytes((*types.StorageBlock)(block))
key := append(blockHashPre, block.Hash().Bytes()...)
err := db.Put(key, enc)
if err != nil {
glog.Fatal("db write fail:", err)
return err
}
if glog.V(logger.Debug) {
glog.Infof("wrote block #%v %s. Took %v\n", block.Number(), common.PP(block.Hash().Bytes()), time.Since(tstart))
}
return nil
}
// InsertReceiptChain attempts to complete an already existing header chain with
// transaction and receipt data.
func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain []types.Receipts) (int, error) {
self.wg.Add(1)
defer self.wg.Done()
// Collect some import statistics to report on
stats := struct{ processed, ignored int32 }{}
start := time.Now()
// Create the block importing task queue and worker functions
tasks := make(chan int, len(blockChain))
for i := 0; i < len(blockChain) && i < len(receiptChain); i++ {
tasks <- i
}
close(tasks)
errs, failed := make([]error, len(tasks)), int32(0)
process := func(worker int) {
for index := range tasks {
block, receipts := blockChain[index], receiptChain[index]
// Short circuit insertion if shutting down or processing failed
if atomic.LoadInt32(&self.procInterrupt) == 1 {
return
}
if atomic.LoadInt32(&failed) > 0 {
return
}
// Short circuit if the owner header is unknown
if !self.HasHeader(block.Hash()) {
errs[index] = fmt.Errorf("containing header #%d [%x…] unknown", block.Number(), block.Hash().Bytes()[:4])
atomic.AddInt32(&failed, 1)
return
}
// Skip if the entire data is already known
if self.HasBlock(block.Hash()) {
atomic.AddInt32(&stats.ignored, 1)
continue
}
// Compute all the non-consensus fields of the receipts
transactions, logIndex := block.Transactions(), uint(0)
for j := 0; j < len(receipts); j++ {
// The transaction hash can be retrieved from the transaction itself
receipts[j].TxHash = transactions[j].Hash()
// The contract address can be derived from the transaction itself
if MessageCreatesContract(transactions[j]) {
from, _ := transactions[j].From()
receipts[j].ContractAddress = crypto.CreateAddress(from, transactions[j].Nonce())
}
// The used gas can be calculated based on previous receipts
if j == 0 {
receipts[j].GasUsed = new(big.Int).Set(receipts[j].CumulativeGasUsed)
} else {
receipts[j].GasUsed = new(big.Int).Sub(receipts[j].CumulativeGasUsed, receipts[j-1].CumulativeGasUsed)
}
// The derived log fields can simply be set from the block and transaction
for k := 0; k < len(receipts[j].Logs); k++ {
receipts[j].Logs[k].BlockNumber = block.NumberU64()
receipts[j].Logs[k].BlockHash = block.Hash()
receipts[j].Logs[k].TxHash = receipts[j].TxHash
receipts[j].Logs[k].TxIndex = uint(j)
receipts[j].Logs[k].Index = logIndex
logIndex++
}
}
// Write all the data out into the database
if err := WriteBody(self.chainDb, block.Hash(), &types.Body{block.Transactions(), block.Uncles()}); err != nil {
errs[index] = fmt.Errorf("failed to write block body: %v", err)
atomic.AddInt32(&failed, 1)
glog.Fatal(errs[index])
return
}
if err := WriteBlockReceipts(self.chainDb, block.Hash(), receipts); err != nil {
errs[index] = fmt.Errorf("failed to write block receipts: %v", err)
atomic.AddInt32(&failed, 1)
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)
}
}
// Start as many worker threads as goroutines allowed
pending := new(sync.WaitGroup)
for i := 0; i < runtime.GOMAXPROCS(0); i++ {
pending.Add(1)
go func(id int) {
defer pending.Done()
process(id)
}(i)
}
pending.Wait()
// If anything failed, report
if failed > 0 {
for i, err := range errs {
if err != nil {
return i, err
}
}
}
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]
if self.GetTd(self.currentFastBlock.Hash()).Cmp(self.GetTd(head.Hash())) < 0 {
if err := WriteHeadFastBlockHash(self.chainDb, head.Hash()); err != nil {
glog.Fatalf("failed to update head fast block hash: %v", err)
}
self.currentFastBlock = head
}
self.mu.Unlock()
// Report some public statistics so the user has a clue what's going on
first, last := blockChain[0], blockChain[len(blockChain)-1]
glog.V(logger.Info).Infof("imported %d receipt(s) (%d ignored) in %v. #%d [%x… / %x…]", stats.processed, stats.ignored,
time.Since(start), last.Number(), first.Hash().Bytes()[:4], last.Hash().Bytes()[:4])
return 0, nil
}