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Merge pull request #17 from ngtuna/dynamic-validator

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revise validator set every epoch
This commit is contained in:
Tuna 2018-05-21 14:35:48 +07:00 committed by GitHub
commit 302d2d9e16
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 66 additions and 21 deletions
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81
cmd/tomo/main.go
View file

@ -290,28 +290,67 @@ func startNode(ctx *cli.Context, stack *node.Node) {
if err := stack.Service(&ethereum); err != nil {
utils.Fatalf("Ethereum service not running: %v", err)
}
// Mining only enabled for validator nodes
if ok, err := ethereum.ValidateMiner(); err != nil {
utils.Fatalf("Can't verify validator permission: %v", err)
} else if !ok {
log.Info("Only validator can mine blocks. Cancel mining on this node")
return
}
// Use a reduced number of threads if requested
if threads := ctx.GlobalInt(utils.MinerThreadsFlag.Name); threads > 0 {
type threaded interface {
SetThreads(threads int)
go func() {
started := false
ok, err := ethereum.ValidateMiner()
if err != nil {
utils.Fatalf("Can't verify validator permission: %v", err)
}
if th, ok := ethereum.Engine().(threaded); ok {
th.SetThreads(threads)
if ok {
log.Info("Validator found. Enabling mining mode...")
// Use a reduced number of threads if requested
if threads := ctx.GlobalInt(utils.MinerThreadsFlag.Name); threads > 0 {
type threaded interface {
SetThreads(threads int)
}
if th, ok := ethereum.Engine().(threaded); ok {
th.SetThreads(threads)
}
}
// Set the gas price to the limits from the CLI and start mining
ethereum.TxPool().SetGasPrice(utils.GlobalBig(ctx, utils.GasPriceFlag.Name))
if err := ethereum.StartMining(true); err != nil {
utils.Fatalf("Failed to start mining: %v", err)
}
started = true
log.Info("Enabled mining node!!!")
}
}
// Set the gas price to the limits from the CLI and start mining
ethereum.TxPool().SetGasPrice(utils.GlobalBig(ctx, utils.GasPriceFlag.Name))
if err := ethereum.StartMining(true); err != nil {
utils.Fatalf("Failed to start mining: %v", err)
}
for {
if ethereum.Checkpoint() {
//Checkpoint!!! It's time to reconcile node's state...
ok, err := ethereum.ValidateMiner()
if err != nil {
utils.Fatalf("Can't verify validator permission: %v", err)
}
if !ok {
log.Info("Only validator can mine blocks. Cancelling mining on this node...")
if started {
ethereum.StopMining()
started = false
}
log.Info("Cancelled mining mode!!!")
} else if !started {
log.Info("Validator found. Enabling mining mode...")
// Use a reduced number of threads if requested
if threads := ctx.GlobalInt(utils.MinerThreadsFlag.Name); threads > 0 {
type threaded interface {
SetThreads(threads int)
}
if th, ok := ethereum.Engine().(threaded); ok {
th.SetThreads(threads)
}
}
// Set the gas price to the limits from the CLI and start mining
ethereum.TxPool().SetGasPrice(utils.GlobalBig(ctx, utils.GasPriceFlag.Name))
if err := ethereum.StartMining(true); err != nil {
utils.Fatalf("Failed to start mining: %v", err)
}
started = true
log.Info("Enabled mining node!!!")
}
}
}
}()
}
}

6
eth/backend.go
View file

@ -334,6 +334,7 @@ func (self *Ethereum) SetEtherbase(etherbase common.Address) {
self.miner.SetEtherbase(etherbase)
}
// ValidateMiner checks if node's address is in set of validators
func (s *Ethereum) ValidateMiner() (bool, error) {
eb, err := s.Etherbase()
if err != nil {
@ -356,6 +357,11 @@ func (s *Ethereum) ValidateMiner() (bool, error) {
return true, nil
}
func (s *Ethereum) Checkpoint() bool {
number := s.blockchain.CurrentHeader().Number.Uint64()
return number%s.chainConfig.Clique.Epoch == 1 || number == 0
}
func (s *Ethereum) StartMining(local bool) error {
eb, err := s.Etherbase()
if err != nil {