Deneb integration: Beacon API getStateV2 (#12424)

Co-authored-by: Nishant Das <nishdas93@gmail.com>
Fix Migration Of State (#12423)

beacon-chain/rpc/eth/debug/debug.go

@@ -104,6 +104,18 @@ func (ds *Server) GetBeaconStateV2(ctx context.Context, req *ethpbv2.BeaconState
 			ExecutionOptimistic: isOptimistic,
 			Finalized:           isFinalized,
 		}, nil
+	case version.Deneb:
+		protoState, err := migration.BeaconStateDenebToProto(beaconSt)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "Could not convert state to proto: %v", err)
+		}
+		return &ethpbv2.BeaconStateResponseV2{
+			Version: ethpbv2.Version_DENEB,
+			Data: &ethpbv2.BeaconStateContainer{
+				State: &ethpbv2.BeaconStateContainer_DenebState{DenebState: protoState},
+			},
+			ExecutionOptimistic: isOptimistic,
+		}, nil
 	default:
 		return nil, status.Error(codes.Internal, "Unsupported state version")
 	}
@@ -133,6 +145,8 @@ func (ds *Server) GetBeaconStateSSZV2(ctx context.Context, req *ethpbv2.BeaconSt
 		ver = ethpbv2.Version_BELLATRIX
 	case version.Capella:
 		ver = ethpbv2.Version_CAPELLA
+	case version.Deneb:
+		ver = ethpbv2.Version_DENEB
 	default:
 		return nil, status.Error(codes.Internal, "Unsupported state version")
 	}

beacon-chain/rpc/eth/debug/debug_test.go

@@ -97,6 +97,24 @@ func TestGetBeaconStateV2(t *testing.T) {
 		assert.NotNil(t, resp)
 		assert.Equal(t, ethpbv2.Version_CAPELLA, resp.Version)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		fakeState, _ := util.DeterministicGenesisStateDeneb(t, 1)
+		server := &Server{
+			Stater: &testutil.MockStater{
+				BeaconState: fakeState,
+			},
+			HeadFetcher:           &blockchainmock.ChainService{},
+			OptimisticModeFetcher: &blockchainmock.ChainService{},
+			FinalizationFetcher:   &blockchainmock.ChainService{},
+			BeaconDB:              db,
+		}
+		resp, err := server.GetBeaconStateV2(context.Background(), &ethpbv2.BeaconStateRequestV2{
+			StateId: []byte("head"),
+		})
+		require.NoError(t, err)
+		assert.NotNil(t, resp)
+		assert.Equal(t, ethpbv2.Version_DENEB, resp.Version)
+	})
 	t.Run("execution optimistic", func(t *testing.T) {
 		parentRoot := [32]byte{'a'}
 		blk := util.NewBeaconBlock()
@@ -256,6 +274,25 @@ func TestGetBeaconStateSSZV2(t *testing.T) {
 		assert.DeepEqual(t, sszState, resp.Data)
 		assert.Equal(t, ethpbv2.Version_CAPELLA, resp.Version)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		fakeState, _ := util.DeterministicGenesisStateDeneb(t, 1)
+		sszState, err := fakeState.MarshalSSZ()
+		require.NoError(t, err)
+
+		server := &Server{
+			Stater: &testutil.MockStater{
+				BeaconState: fakeState,
+			},
+		}
+		resp, err := server.GetBeaconStateSSZV2(context.Background(), &ethpbv2.BeaconStateRequestV2{
+			StateId: make([]byte, 0),
+		})
+		require.NoError(t, err)
+		assert.NotNil(t, resp)
+
+		assert.DeepEqual(t, sszState, resp.Data)
+		assert.Equal(t, ethpbv2.Version_DENEB, resp.Version)
+	})
 }
 
 func TestListForkChoiceHeadsV2(t *testing.T) {