core: modify interface (#194)

* Add a new method to notify full node about round cutting.
* Modify interface to return error when preparing block

1 files changed, 5 insertions, 0 deletions

diff --git a/simulation/governance.go b/simulation/governance.go
index 2b0f56b..0a2c886 100644
--- a/simulation/governance.go
+++ b/simulation/governance.go
@@ -114,6 +114,11 @@ func (g *simGovernance) CRS(round uint64) common.Hash {
 	return g.crs[round]
 }
 
+// NotifyRoundHeight notifies governance contract to snapshot configuration
+// for that round with the block on that consensus height.
+func (g *simGovernance) NotifyRoundHeight(round, height uint64) {
+}
+
 // ProposeCRS proposes a CRS of round.
 func (g *simGovernance) ProposeCRS(signedCRS []byte) {
 	crs := crypto.Keccak256Hash(signedCRS)