Engine/create (#12)

* added aura to createConsensusEngine

* consensus engine create

consensus/aura/aura.go

@@ -206,7 +206,7 @@ type Aura struct {
 	lock   sync.RWMutex   // Protects the signer fields
 }
 
-// New creates a Clique proof-of-authority consensus engine with the initial
+// New creates a Aura proof-of-authority consensus engine with the initial
 // signers set to the ones provided by the user.
 func New(config *params.AuraConfig, db ethdb.Database) *Aura {
 	// Set any missing consensus parameters to their defaults

eth/backend.go

@@ -49,6 +49,7 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/ethereum/go-ethereum/consensus/aura"
 )
 
 type LesServer interface {
@@ -220,6 +221,8 @@ func CreateConsensusEngine(ctx *node.ServiceContext, chainConfig *params.ChainCo
 	// If proof-of-authority is requested, set it up
 	if chainConfig.Clique != nil {
 		return clique.New(chainConfig.Clique, db)
+	} else if chainConfig.Aura != nil {
+			return aura.New(chainConfig.Aura, db)
 	}
 	// Otherwise assume proof-of-work
 	switch config.PowMode {
@@ -375,6 +378,15 @@ func (s *Ethereum) StartMining(threads int) error {
 				return fmt.Errorf("signer missing: %v", err)
 			}
 			clique.Authorize(eb, wallet.SignHash)
+		} else {
+			if aura, ok := s.engine.(*aura.Aura); ok {
+				wallet, e := s.accountManager.Find(accounts.Account{Address: eb})
+				if wallet == nil || e != nil {
+					log.Error("Etherbase account unavailable locally", "err", err)
+					return fmt.Errorf("signer missing: %v", err)
+				}
+				aura.Authorize(eb, wallet.SignHash)
+			}
 		}
 		// If mining is started, we can disable the transaction rejection mechanism
 		// introduced to speed sync times.