consensus: dexcon: disqualify dead node (#280)

Since a qualified node might fail stopped, we need to remove them from
qualified nodes to maintain network integrity. We do this by inspect the
previous round to see if there are dead nodes. A dead node is a notary
set node that does not propose any block in the previous round. We
disqualify them by fining them so their staked value is 1 wei below
minStake. This make them unqualified for being notary set in the follow
on rounds.

1 files changed, 5 insertions, 7 deletions

diff --git a/dex/app_test.go b/dex/app_test.go
index 7b158dd9e..e648abdbd 100644
--- a/dex/app_test.go
+++ b/dex/app_test.go
@@ -2299,12 +2299,10 @@ func newDexon(masterKey *ecdsa.PrivateKey, accountNum int) (*Dexon, []*ecdsa.Pri
 	db := ethdb.NewMemDatabase()
 
 	genesis := core.DefaultTestnetGenesisBlock()
-	genesis.Alloc = core.GenesisAlloc{
-		crypto.PubkeyToAddress(masterKey.PublicKey): {
-			Balance:   big.NewInt(100000000000000000),
-			Staked:    big.NewInt(50000000000000000),
-			PublicKey: crypto.FromECDSAPub(&masterKey.PublicKey),
-		},
+	genesis.Alloc[crypto.PubkeyToAddress(masterKey.PublicKey)] = core.GenesisAccount{
+		Balance:   big.NewInt(100000000000000000),
+		Staked:    big.NewInt(50000000000000000),
+		PublicKey: crypto.FromECDSAPub(&masterKey.PublicKey),
 	}
 
 	var accounts []*ecdsa.PrivateKey
@@ -2322,7 +2320,7 @@ func newDexon(masterKey *ecdsa.PrivateKey, accountNum int) (*Dexon, []*ecdsa.Pri
 	}
 
 	genesis.Config.Dexcon.BlockGasLimit = 2000000
-	genesis.Config.Dexcon.RoundLength = 60
+	genesis.Config.Dexcon.RoundLength = 600
 	genesis.Config.Dexcon.Owner = crypto.PubkeyToAddress(masterKey.PublicKey)
 
 	chainConfig, _, err := core.SetupGenesisBlock(db, genesis)