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author | obscuren <geffobscura@gmail.com> | 2015-02-04 21:52:59 +0800 |
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committer | obscuren <geffobscura@gmail.com> | 2015-02-04 21:53:22 +0800 |
commit | b1870631a4829e075eae77064973ef94aa2166b3 (patch) | |
tree | 1baf861b569d8310eb332238e5b771251141fd54 /miner | |
parent | 4dc283c0fb5d886ce8d3638c3322af7e6f2a3b2e (diff) | |
download | dexon-b1870631a4829e075eae77064973ef94aa2166b3.tar.gz dexon-b1870631a4829e075eae77064973ef94aa2166b3.tar.zst dexon-b1870631a4829e075eae77064973ef94aa2166b3.zip |
WIP miner
Diffstat (limited to 'miner')
-rw-r--r-- | miner/worker.go | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/miner/worker.go b/miner/worker.go new file mode 100644 index 000000000..dbb8a5832 --- /dev/null +++ b/miner/worker.go @@ -0,0 +1,164 @@ +package miner + +import ( + "fmt" + "math/big" + "sort" + + "github.com/ethereum/go-ethereum/core" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/eth" + "github.com/ethereum/go-ethereum/ethutil" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/pow" + "github.com/ethereum/go-ethereum/state" + "gopkg.in/fatih/set.v0" +) + +type environment struct { + totalUsedGas *big.Int + state *state.StateDB + coinbase *state.StateObject + block *types.Block + ancestors *set.Set + uncles *set.Set +} + +func env(block *types.Block, eth *eth.Ethereum) *environment { + state := state.New(block.Root(), eth.Db()) + env := &environment{ + totalUsedGas: new(big.Int), + state: state, + block: block, + ancestors: set.New(), + uncles: set.New(), + coinbase: state.GetOrNewStateObject(block.Coinbase()), + } + for _, ancestor := range eth.ChainManager().GetAncestors(block, 7) { + env.ancestors.Add(string(ancestor.Hash())) + } + + return env +} + +type worker struct { + agents []chan<- *types.Block + mux *event.TypeMux + quit chan struct{} + pow pow.PoW + + eth *eth.Ethereum + chain *core.ChainManager + proc *core.BlockProcessor + coinbase []byte + + current *environment +} + +func (self *worker) register(agent chan<- *types.Block) { + self.agents = append(self.agents, agent) +} + +func (self *worker) update() { + events := self.mux.Subscribe(core.NewBlockEvent{}, core.TxPreEvent{}, &LocalTx{}) + +out: + for { + select { + case event := <-events.Chan(): + switch event := event.(type) { + case core.NewBlockEvent: + block := event.Block + if self.eth.ChainManager().HasBlock(block.Hash()) { + } else if true { + } + case core.TxPreEvent, *LocalTx: + } + case <-self.quit: + break out + } + } +} + +func (self *worker) commit() { + self.current.state.Update(ethutil.Big0) + self.current.block.SetRoot(self.current.state.Root()) + + for _, agent := range self.agents { + agent <- self.current.block + } +} + +func (self *worker) commitNewWork() { + self.current = env(self.chain.NewBlock(self.coinbase), self.eth) + parent := self.chain.GetBlock(self.current.block.ParentHash()) + self.current.coinbase.SetGasPool(core.CalcGasLimit(parent, self.current.block)) + + transactions := self.eth.TxPool().GetTransactions() + sort.Sort(types.TxByNonce{transactions}) + + // Keep track of transactions which return errors so they can be removed + var remove types.Transactions + for _, tx := range transactions { + err := self.commitTransaction(tx) + switch { + case core.IsNonceErr(err): + remove = append(remove, tx) + case core.IsGasLimitErr(err): + // ignore + default: + minerlogger.Infoln(err) + remove = append(remove, tx) + } + } + self.eth.TxPool().RemoveSet(remove) + + self.current.coinbase.AddAmount(core.BlockReward) + + self.commit() +} + +var ( + inclusionReward = new(big.Int).Div(core.BlockReward, big.NewInt(32)) + _uncleReward = new(big.Int).Mul(core.BlockReward, big.NewInt(15)) + uncleReward = new(big.Int).Div(_uncleReward, big.NewInt(16)) +) + +func (self *worker) commitUncle(uncle *types.Header) error { + if self.current.uncles.Has(string(uncle.Hash())) { + // Error not unique + return core.UncleError("Uncle not unique") + } + self.current.uncles.Add(string(uncle.Hash())) + + if !self.current.ancestors.Has(string(uncle.ParentHash)) { + return core.UncleError(fmt.Sprintf("Uncle's parent unknown (%x)", uncle.ParentHash[0:4])) + } + + if !self.pow.Verify(types.NewBlockWithHeader(uncle)) { + return core.ValidationError("Uncle's nonce is invalid (= %v)", ethutil.Bytes2Hex(uncle.Nonce)) + } + + uncleAccount := self.current.state.GetAccount(uncle.Coinbase) + uncleAccount.AddAmount(uncleReward) + + self.current.coinbase.AddBalance(uncleReward) + + return nil +} + +func (self *worker) commitTransaction(tx *types.Transaction) error { + snapshot := self.current.state.Copy() + receipt, txGas, err := self.proc.ApplyTransaction(self.current.coinbase, self.current.state, self.current.block, tx, self.current.totalUsedGas, true) + if err != nil { + self.current.state.Set(snapshot) + + return err + } + + self.current.totalUsedGas.Add(self.current.totalUsedGas, txGas) + self.current.block.AddTransaction(tx) + self.current.block.AddReceipt(receipt) + + return nil +} |