func (self *BlockProcessor) ApplyTransactions(gp GasPool, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error) {
var (
receipts types.Receipts
totalUsedGas = big.NewInt(0)
err error
cumulativeSum = new(big.Int)
header = block.Header()
)
for i, tx := range txs {
statedb.StartRecord(tx.Hash(), block.Hash(), i)
receipt, txGas, err := self.ApplyTransaction(gp, statedb, header, tx, totalUsedGas, transientProcess)
if err != nil {
return nil, err
}
if err != nil {
glog.V(logger.Core).Infoln("TX err:", err)
}
receipts = append(receipts, receipt)
cumulativeSum.Add(cumulativeSum, new(big.Int).Mul(txGas, tx.GasPrice()))
}
if block.GasUsed().Cmp(totalUsedGas) != 0 {
return nil, ValidationError(fmt.Sprintf("gas used error (%v / %v)", block.GasUsed(), totalUsedGas))
}
if transientProcess {
go self.eventMux.Post(PendingBlockEvent{block, statedb.Logs()})
}
return receipts, err
}
func blockErr(block *types.Block, err error) {
h := block.Header()
glog.V(logger.Error).Infof("Bad block #%v (%x)\n", h.Number, h.Hash().Bytes())
glog.V(logger.Error).Infoln(err)
glog.V(logger.Debug).Infoln(verifyNonces)
}
func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs state.Logs, receipts types.Receipts, err error) {
// Create a new state based on the parent's root (e.g., create copy)
state := state.New(parent.Root(), sm.chainDb)
header := block.Header()
uncles := block.Uncles()
txs := block.Transactions()
// Block validation
if err = ValidateHeader(sm.Pow, header, parent, false, false); err != nil {
return
}
// There can be at most two uncles
if len(uncles) > 2 {
return nil, nil, ValidationError("Block can only contain maximum 2 uncles (contained %v)", len(uncles))
}
receipts, err = sm.TransitionState(state, parent, block, false)
if err != nil {
return
}
// Validate the received block's bloom with the one derived from the generated receipts.
// For valid blocks this should always validate to true.
rbloom := types.CreateBloom(receipts)
if rbloom != header.Bloom {
err = fmt.Errorf("unable to replicate block's bloom=%x", rbloom)
return
}
// The transactions Trie's root (R = (Tr [[i, RLP(T1)], [i, RLP(T2)], ... [n, RLP(Tn)]]))
// can be used by light clients to make sure they've received the correct Txs
txSha := types.DeriveSha(txs)
if txSha != header.TxHash {
err = fmt.Errorf("invalid transaction root hash. received=%x calculated=%x", header.TxHash, txSha)
return
}
// Tre receipt Trie's root (R = (Tr [[H1, R1], ... [Hn, R1]]))
receiptSha := types.DeriveSha(receipts)
if receiptSha != header.ReceiptHash {
err = fmt.Errorf("invalid receipt root hash. received=%x calculated=%x", header.ReceiptHash, receiptSha)
return
}
// Verify UncleHash before running other uncle validations
unclesSha := types.CalcUncleHash(uncles)
if unclesSha != header.UncleHash {
err = fmt.Errorf("invalid uncles root hash. received=%x calculated=%x", header.UncleHash, unclesSha)
return
}
// Verify uncles
if err = sm.VerifyUncles(state, block, parent); err != nil {
return
}
// Accumulate static rewards; block reward, uncle's and uncle inclusion.
AccumulateRewards(state, header, uncles)
// Commit state objects/accounts to a temporary trie (does not save)
// used to calculate the state root.
state.SyncObjects()
if header.Root != state.Root() {
err = fmt.Errorf("invalid merkle root. received=%x got=%x", header.Root, state.Root())
return
}
// Sync the current block's state to the database
state.Sync()
return state.Logs(), receipts, nil
}
