Golang ethstate.State類代碼示例

// Manifest will handle both creating notifications and generating bloom bin data
func (sm *StateManager) createBloomFilter(state *ethstate.State) *BloomFilter {
	bloomf := NewBloomFilter(nil)

	/*
		for addr, stateObject := range state.Manifest().ObjectChanges {
			// Set the bloom filter's bin
			bloomf.Set([]byte(addr))

			sm.Ethereum.Reactor().Post("object:"+addr, stateObject)
		}
	*/
	for _, msg := range state.Manifest().Messages {
		bloomf.Set(msg.To)
		bloomf.Set(msg.From)
	}

	sm.Ethereum.Reactor().Post("messages", state.Manifest().Messages)

	/*
		for stateObjectAddr, mappedObjects := range state.Manifest().StorageChanges {
			for addr, value := range mappedObjects {
				// Set the bloom filter's bin
				bloomf.Set(ethcrypto.Sha3Bin([]byte(stateObjectAddr + addr)))

				sm.Ethereum.Reactor().Post("storage:"+stateObjectAddr+":"+addr, &ethstate.StorageState{[]byte(stateObjectAddr), []byte(addr), value})
			}
		}
	*/

	return bloomf
}

func (self *JSRE) dump(call otto.FunctionCall) otto.Value {
	var state *ethstate.State

	if len(call.ArgumentList) > 0 {
		var block *ethchain.Block
		if call.Argument(0).IsNumber() {
			num, _ := call.Argument(0).ToInteger()
			block = self.ethereum.BlockChain().GetBlockByNumber(uint64(num))
		} else if call.Argument(0).IsString() {
			hash, _ := call.Argument(0).ToString()
			block = self.ethereum.BlockChain().GetBlock(ethutil.Hex2Bytes(hash))
		} else {
			fmt.Println("invalid argument for dump. Either hex string or number")
		}

		if block == nil {
			fmt.Println("block not found")

			return otto.UndefinedValue()
		}

		state = block.State()
	} else {
		state = self.ethereum.StateManager().CurrentState()
	}

	v, _ := self.Vm.ToValue(state.Dump())

	return v
}

func (pool *TxPool) RemoveInvalid(state *ethstate.State) {
	for e := pool.pool.Front(); e != nil; e = e.Next() {
		tx := e.Value.(*Transaction)
		sender := state.GetAccount(tx.Sender())
		err := pool.ValidateTransaction(tx)
		if err != nil || sender.Nonce >= tx.Nonce {
			pool.pool.Remove(e)
		}
	}
}

func (sm *StateManager) ApplyDiff(state *ethstate.State, parent, block *Block) (receipts Receipts, err error) {
	coinbase := state.GetOrNewStateObject(block.Coinbase)
	coinbase.SetGasPool(block.CalcGasLimit(parent))

	// Process the transactions on to current block
	receipts, _, _, err = sm.ProcessTransactions(coinbase, state, block, parent, block.Transactions())
	if err != nil {
		return nil, err
	}

	return receipts, nil
}

// Converts an transaction in to a state object
func MakeContract(tx *Transaction, state *ethstate.State) *ethstate.StateObject {
	// Create contract if there's no recipient
	if tx.IsContract() {
		addr := tx.CreationAddress()

		contract := state.NewStateObject(addr)
		contract.InitCode = tx.Data
		contract.State = ethstate.New(ethtrie.New(ethutil.Config.Db, ""))

		return contract
	}

	return nil
}

func (sm *StateManager) AccumelateRewards(state *ethstate.State, block *Block) error {
	// Get the account associated with the coinbase
	account := state.GetAccount(block.Coinbase)
	// Reward amount of ether to the coinbase address
	account.AddAmount(CalculateBlockReward(block, len(block.Uncles)))

	addr := make([]byte, len(block.Coinbase))
	copy(addr, block.Coinbase)
	state.UpdateStateObject(account)

	for _, uncle := range block.Uncles {
		uncleAccount := state.GetAccount(uncle.Coinbase)
		uncleAccount.AddAmount(CalculateUncleReward(uncle))

		state.UpdateStateObject(uncleAccount)
	}

	return nil
}

func (self *StateManager) ProcessTransactions(coinbase *ethstate.StateObject, state *ethstate.State, block, parent *Block, txs Transactions) (Receipts, Transactions, Transactions, error) {
	var (
		receipts           Receipts
		handled, unhandled Transactions
		totalUsedGas       = big.NewInt(0)
		err                error
	)

done:
	for i, tx := range txs {
		txGas := new(big.Int).Set(tx.Gas)

		cb := state.GetStateObject(coinbase.Address())
		st := NewStateTransition(cb, tx, state, block)
		err = st.TransitionState()
		if err != nil {
			statelogger.Infoln(err)
			switch {
			case IsNonceErr(err):
				err = nil // ignore error
				continue
			case IsGasLimitErr(err):
				unhandled = txs[i:]

				break done
			default:
				statelogger.Infoln(err)
				err = nil
				//return nil, nil, nil, err
			}
		}

		// Notify all subscribers
		self.Ethereum.Reactor().Post("newTx:post", tx)

		// Update the state with pending changes
		state.Update()

		txGas.Sub(txGas, st.gas)
		accumelative := new(big.Int).Set(totalUsedGas.Add(totalUsedGas, txGas))
		receipt := &Receipt{tx, ethutil.CopyBytes(state.Root().([]byte)), accumelative}

		if i < len(block.Receipts()) {
			original := block.Receipts()[i]
			if !original.Cmp(receipt) {
				return nil, nil, nil, fmt.Errorf("err diff #%d (r) %v ~ %x  <=>  (c) %v ~ %x (%x)\n", i+1, original.CumulativeGasUsed, original.PostState[0:4], receipt.CumulativeGasUsed, receipt.PostState[0:4], receipt.Tx.Hash())
			}
		}

		receipts = append(receipts, receipt)
		handled = append(handled, tx)

		if ethutil.Config.Diff && ethutil.Config.DiffType == "all" {
			state.CreateOutputForDiff()
		}
	}

	parent.GasUsed = totalUsedGas

	return receipts, handled, unhandled, err
}