mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-25 04:47:17 +00:00
f8d0cd9906
Not sure if this is the right approach. Why? BlockChain shouldn't need the "Ethereum" object. BlockChain shouldn't need to worry about notifying listeners or message propagation.
258 lines
6.1 KiB
Go
258 lines
6.1 KiB
Go
/*
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This file is part of go-ethereum
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go-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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go-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @authors
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* Jeffrey Wilcke <i@jev.io>
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* @date 2014
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*
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*/
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package miner
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import (
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"math/big"
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"sort"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/ethutil"
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"github.com/ethereum/go-ethereum/state"
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"github.com/ethereum/go-ethereum/chain"
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"github.com/ethereum/go-ethereum/chain/types"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/wire"
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)
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type LocalTx struct {
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To []byte `json:"to"`
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Data []byte `json:"data"`
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Gas string `json:"gas"`
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GasPrice string `json:"gasPrice"`
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Value string `json:"value"`
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}
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func (self *LocalTx) Sign(key []byte) *types.Transaction {
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return nil
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}
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var minerlogger = logger.NewLogger("MINER")
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type Miner struct {
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eth *eth.Ethereum
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events event.Subscription
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uncles types.Blocks
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localTxs map[int]*LocalTx
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localTxId int
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pow chain.PoW
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quitCh chan struct{}
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powQuitCh chan struct{}
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Coinbase []byte
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mining bool
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MinAcceptedGasPrice *big.Int
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}
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func New(coinbase []byte, eth *eth.Ethereum) *Miner {
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return &Miner{
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eth: eth,
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powQuitCh: make(chan struct{}),
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pow: &chain.EasyPow{},
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mining: false,
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localTxs: make(map[int]*LocalTx),
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MinAcceptedGasPrice: big.NewInt(10000000000000),
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Coinbase: coinbase,
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}
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}
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func (self *Miner) GetPow() chain.PoW {
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return self.pow
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}
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func (self *Miner) AddLocalTx(tx *LocalTx) int {
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minerlogger.Infof("Added local tx (%x %v / %v)\n", tx.To[0:4], tx.GasPrice, tx.Value)
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self.localTxId++
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self.localTxs[self.localTxId] = tx
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self.eth.EventMux().Post(tx)
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return self.localTxId
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}
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func (self *Miner) RemoveLocalTx(id int) {
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if tx := self.localTxs[id]; tx != nil {
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minerlogger.Infof("Removed local tx (%x %v / %v)\n", tx.To[0:4], tx.GasPrice, tx.Value)
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}
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self.eth.EventMux().Post(&LocalTx{})
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delete(self.localTxs, id)
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}
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func (self *Miner) Start() {
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if self.mining {
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return
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}
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minerlogger.Infoln("Starting mining operations")
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self.mining = true
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self.quitCh = make(chan struct{})
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self.powQuitCh = make(chan struct{})
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mux := self.eth.EventMux()
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self.events = mux.Subscribe(chain.NewBlockEvent{}, chain.TxPreEvent{}, &LocalTx{})
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go self.update()
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go self.mine()
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}
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func (self *Miner) Stop() {
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if !self.mining {
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return
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}
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self.mining = false
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minerlogger.Infoln("Stopping mining operations")
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self.events.Unsubscribe()
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close(self.quitCh)
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close(self.powQuitCh)
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}
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func (self *Miner) Mining() bool {
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return self.mining
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}
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func (self *Miner) update() {
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out:
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for {
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select {
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case event := <-self.events.Chan():
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switch event := event.(type) {
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case chain.NewBlockEvent:
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block := event.Block
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if self.eth.ChainManager().HasBlock(block.Hash()) {
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self.reset()
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self.eth.TxPool().RemoveSet(block.Transactions())
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go self.mine()
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} else if true {
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// do uncle stuff
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}
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case chain.TxPreEvent, *LocalTx:
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self.reset()
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go self.mine()
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}
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case <-self.quitCh:
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break out
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}
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}
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}
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func (self *Miner) reset() {
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println("reset")
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close(self.powQuitCh)
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self.powQuitCh = make(chan struct{})
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}
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func (self *Miner) mine() {
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var (
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blockManager = self.eth.BlockManager()
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chainMan = self.eth.ChainManager()
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block = chainMan.NewBlock(self.Coinbase)
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)
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block.MinGasPrice = self.MinAcceptedGasPrice
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// Apply uncles
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if len(self.uncles) > 0 {
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block.SetUncles(self.uncles)
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}
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parent := chainMan.GetBlock(block.PrevHash)
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coinbase := block.State().GetOrNewStateObject(block.Coinbase)
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coinbase.SetGasPool(block.CalcGasLimit(parent))
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transactions := self.finiliseTxs()
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// Accumulate all valid transactions and apply them to the new state
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// Error may be ignored. It's not important during mining
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receipts, txs, _, erroneous, err := blockManager.ProcessTransactions(coinbase, block.State(), block, block, transactions)
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if err != nil {
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minerlogger.Debugln(err)
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}
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self.eth.TxPool().RemoveSet(erroneous)
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block.SetTransactions(txs)
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block.SetReceipts(receipts)
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// Accumulate the rewards included for this block
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blockManager.AccumelateRewards(block.State(), block, parent)
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block.State().Update()
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minerlogger.Infof("Mining on block. Includes %v transactions", len(transactions))
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// Find a valid nonce
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nonce := self.pow.Search(block, self.powQuitCh)
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if nonce != nil {
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block.Nonce = nonce
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lchain := chain.NewChain(types.Blocks{block})
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_, err := chainMan.TestChain(lchain)
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if err != nil {
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minerlogger.Infoln(err)
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} else {
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chainMan.InsertChain(lchain, func(block *types.Block, _ state.Messages) {
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self.eth.EventMux().Post(chain.NewBlockEvent{block})
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})
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self.eth.Broadcast(wire.MsgBlockTy, []interface{}{block.Value().Val})
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minerlogger.Infof("🔨 Mined block %x\n", block.Hash())
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minerlogger.Infoln(block)
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}
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go self.mine()
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}
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}
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func (self *Miner) finiliseTxs() types.Transactions {
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// Sort the transactions by nonce in case of odd network propagation
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var txs types.Transactions
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state := self.eth.BlockManager().TransState()
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// XXX This has to change. Coinbase is, for new, same as key.
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key := self.eth.KeyManager()
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for _, ltx := range self.localTxs {
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tx := types.NewTransactionMessage(ltx.To, ethutil.Big(ltx.Value), ethutil.Big(ltx.Gas), ethutil.Big(ltx.GasPrice), ltx.Data)
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tx.Nonce = state.GetNonce(self.Coinbase)
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state.SetNonce(self.Coinbase, tx.Nonce+1)
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tx.Sign(key.PrivateKey())
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txs = append(txs, tx)
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}
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txs = append(txs, self.eth.TxPool().CurrentTransactions()...)
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sort.Sort(types.TxByNonce{txs})
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return txs
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}
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