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authorobscuren <geffobscura@gmail.com>2015-02-04 21:52:59 +0800
committerobscuren <geffobscura@gmail.com>2015-02-04 21:53:22 +0800
commitb1870631a4829e075eae77064973ef94aa2166b3 (patch)
tree1baf861b569d8310eb332238e5b771251141fd54 /miner/worker.go
parent4dc283c0fb5d886ce8d3638c3322af7e6f2a3b2e (diff)
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WIP miner
Diffstat (limited to 'miner/worker.go')
-rw-r--r--miner/worker.go164
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
+}