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masternode takes turn (circle) to propose block

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This commit is contained in:
AnilChinchawale 2018-07-07 16:11:13 +05:30
parent 38975a48d4
commit 91aa7c65ef
2 changed files with 31 additions and 0 deletions
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13
consensus/clique/clique.go
View file

@ -374,6 +374,19 @@ 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, pre, cur common.Address) bool {
return (position(snap.signers(), pre)+1) % len(snap.signers()) == position(snap.signers(), cur)
}
// 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

18
miner/worker.go
View file

@ -397,6 +397,24 @@ 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
}
if !clique.YourTurn(snap, parent.Coinbase(), self.coinbase) {
log.Info("Not our turn to commit block", "wait")
return
}
}
}
tstamp := tstart.Unix()
if parent.Time().Cmp(new(big.Int).SetInt64(tstamp)) >= 0 {
tstamp = parent.Time().Int64() + 1