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Merge pull request #28 from ngtuna/masternode1

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Masternode takes turn to create block
This commit is contained in:
Tuna 2018-06-01 12:02:43 +07:00 committed by GitHub
commit f7e72f2ed2
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2 changed files with 46 additions and 1 deletions
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21
consensus/clique/clique.go
View file

@ -48,6 +48,7 @@ const (
inmemorySignatures = 4096 // Number of recent block signatures to keep in memory
wiggleTime = 500 * time.Millisecond // Random delay (per signer) to allow concurrent signers
genesisCoinBase = "0x0000000000000000000000000000000000000000"
)
// Clique proof-of-authority protocol constants.
@ -374,6 +375,26 @@ func (c *Clique) GetSnapshot(chain consensus.ChainReader, header *types.Header)
return snap, nil
}
func position(list []common.Address, x common.Address) int {
for i, item := range list {
if item == x {
return i
}
}
return -1
}
func YourTurn(snap *Snapshot, header *types.Header, cur common.Address) (bool, error) {
pre, err := ecrecover(header, snap.sigcache)
if err != nil {
return false, err
}
preIndex := position(snap.signers(), pre)
curIndex := position(snap.signers(), cur)
log.Info("Debugging info", "number of masternodes", len(snap.signers()), "previous", pre, "position", preIndex, "current", cur, "position", curIndex)
return (preIndex+1)%len(snap.signers()) == curIndex || pre.String() == genesisCoinBase, nil
}
// snapshot retrieves the authorization snapshot at a given point in time.
func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash common.Hash, parents []*types.Header) (*Snapshot, error) {
// Search for a snapshot in memory or on disk for checkpoints

24
miner/worker.go
View file

@ -26,6 +26,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/consensus/clique"
"github.com/ethereum/go-ethereum/consensus/misc"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
@ -397,6 +398,29 @@ func (self *worker) commitNewWork() {
tstart := time.Now()
parent := self.chain.CurrentBlock()
// Only try to commit new work if we are mining
if atomic.LoadInt32(&self.mining) == 1 {
// check if we are right after parent's coinbase in the list
// only go with Clique
if self.config.Clique != nil {
c := self.engine.(*clique.Clique)
snap, err := c.GetSnapshot(self.chain, parent.Header())
if err != nil {
log.Error("Failed when trying to commit new work", "err", err)
return
}
ok, err := clique.YourTurn(snap, parent.Header(), self.coinbase)
if err != nil {
log.Error("Failed when trying to commit new work", "err", err)
return
}
if !ok {
log.Info("Not our turn to commit block. Wait for next time")
return
}
}
}
tstamp := tstart.Unix()
if parent.Time().Cmp(new(big.Int).SetInt64(tstamp)) >= 0 {
tstamp = parent.Time().Int64() + 1