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@@ -0,0 +1,81 @@
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+package miner
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+
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+import (
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+ "github.com/ethereum/ethash"
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+ "github.com/ethereum/go-ethereum/common"
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+ "github.com/ethereum/go-ethereum/core/types"
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+)
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+
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+type RemoteAgent struct {
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+ work *types.Block
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+ currentWork *types.Block
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+
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+ quit chan struct{}
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+ workCh chan *types.Block
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+ returnCh chan<- Work
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+}
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+
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+func NewRemoteAgent() *RemoteAgent {
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+ agent := &RemoteAgent{}
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+ go agent.run()
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+
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+ return agent
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+}
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+
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+func (a *RemoteAgent) Work() chan<- *types.Block {
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+ return a.workCh
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+}
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+
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+func (a *RemoteAgent) SetWorkCh(returnCh chan<- Work) {
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+ a.returnCh = returnCh
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+}
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+
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+func (a *RemoteAgent) Start() {
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+ a.quit = make(chan struct{})
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+ a.workCh = make(chan *types.Block, 1)
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+}
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+
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+func (a *RemoteAgent) Stop() {
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+ close(a.quit)
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+ close(a.workCh)
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+}
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+
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+func (a *RemoteAgent) GetHashRate() int64 { return 0 }
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+
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+func (a *RemoteAgent) run() {
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+out:
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+ for {
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+ select {
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+ case <-a.quit:
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+ break out
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+ case work := <-a.workCh:
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+ a.work = work
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+ }
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+ }
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+}
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+
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+func (a *RemoteAgent) GetWork() [3]string {
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+ var res [3]string
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+
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+ // XXX Wait here until work != nil ?
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+ if a.work != nil {
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+ res[0] = a.work.HashNoNonce().Hex()
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+ seedHash, _ := ethash.GetSeedHash(a.currentWork.NumberU64())
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+ res[1] = common.Bytes2Hex(seedHash)
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+ res[2] = common.Bytes2Hex(a.work.Difficulty().Bytes())
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+ }
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+
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+ return res
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+}
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+
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+func (a *RemoteAgent) SubmitWork(nonce uint64, mixDigest, seedHash common.Hash) bool {
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+ // Return true or false, but does not indicate if the PoW was correct
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+
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+ // Make sure the external miner was working on the right hash
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+ if a.currentWork != nil && a.work != nil && a.currentWork.Hash() == a.work.Hash() {
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+ a.returnCh <- Work{a.currentWork.Number().Uint64(), nonce, mixDigest.Bytes(), seedHash.Bytes()}
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+ return true
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+ }
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+
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+ return false
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+}
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