diff options
Diffstat (limited to 'core/vm')
| -rw-r--r-- | core/vm/oracle_contracts.go | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/core/vm/oracle_contracts.go b/core/vm/oracle_contracts.go index a698b87f1..06b9c2a89 100644 --- a/core/vm/oracle_contracts.go +++ b/core/vm/oracle_contracts.go @@ -24,6 +24,7 @@ import ( "math" "math/big" "sort" + "sync/atomic" "github.com/dexon-foundation/dexon/accounts/abi" "github.com/dexon-foundation/dexon/common" @@ -1250,16 +1251,32 @@ type GovernanceContract struct { // defaultCoreDKGUtils implements coreDKGUtils. type defaultCoreDKGUtils struct { + gpk atomic.Value } func (c *defaultCoreDKGUtils) NewGroupPublicKey( state *GovernanceState, round *big.Int, threshold int) (tsigVerifierIntf, error) { + var gpk *dkgTypes.GroupPublicKey + var err error + + v := c.gpk.Load() + if v != nil { + gpk = v.(*dkgTypes.GroupPublicKey) + if gpk.Round == round.Uint64() { + return gpk, nil + } + } // Prepare DKGMasterPublicKeys. mpks := state.DKGMasterPublicKeyItems() comps := state.DKGComplaintItems() - return dkgTypes.NewGroupPublicKey(round.Uint64(), mpks, comps, threshold) + gpk, err = dkgTypes.NewGroupPublicKey(round.Uint64(), mpks, comps, threshold) + if err != nil { + return nil, err + } + c.gpk.Store(gpk) + return gpk, nil } func (g *GovernanceContract) Address() common.Address { |