Make staking txs optional in blocks

internal/hmyapi/blockchain.go

@@ -48,6 +48,7 @@ type BlockArgs struct {
 	InclTx      bool     `json:"inclTx"`
 	FullTx      bool     `json:"fullTx"`
 	Signers     []string `json:"signers"`
+	InclStaking bool     `json:"inclStaking"`
 }
 
 // GetBlockByNumber returns the requested block. When blockNr is -1 the chain head is returned. When fullTx is true all
@@ -55,7 +56,7 @@ type BlockArgs struct {
 func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, blockNr rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) {
 	block, err := s.b.BlockByNumber(ctx, blockNr)
 	if block != nil {
-		blockArgs := BlockArgs{WithSigners: false, InclTx: true, FullTx: fullTx}
+		blockArgs := BlockArgs{WithSigners: false, InclTx: true, FullTx: fullTx, InclStaking: false}
 		response, err := RPCMarshalBlock(block, blockArgs)
 		if err == nil && blockNr == rpc.PendingBlockNumber {
 			// Pending blocks need to nil out a few fields
@@ -73,7 +74,7 @@ func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, blockNr rpc.
 func (s *PublicBlockChainAPI) GetBlockByHash(ctx context.Context, blockHash common.Hash, fullTx bool) (map[string]interface{}, error) {
 	block, err := s.b.GetBlock(ctx, blockHash)
 	if block != nil {
-		blockArgs := BlockArgs{WithSigners: false, InclTx: true, FullTx: fullTx}
+		blockArgs := BlockArgs{WithSigners: false, InclTx: true, FullTx: fullTx, InclStaking: false}
 		return RPCMarshalBlock(block, blockArgs)
 	}
 	return nil, err

internal/hmyapi/types.go

@@ -389,14 +389,6 @@ func RPCMarshalBlock(b *types.Block, blockArgs BlockArgs) (map[string]interface{
 				return newRPCTransactionFromBlockHash(b, tx.Hash()), nil
 			}
 		}
-		formatStakingTx := func(tx *types2.StakingTransaction) (interface{}, error) {
-			return tx.Hash(), nil
-		}
-		if blockArgs.FullTx {
-			formatStakingTx = func(tx *types2.StakingTransaction) (interface{}, error) {
-				return newRPCStakingTransactionFromBlockHash(b, tx.Hash()), nil
-			}
-		}
 		txs := b.Transactions()
 		transactions := make([]interface{}, len(txs))
 		var err error
@@ -407,14 +399,24 @@ func RPCMarshalBlock(b *types.Block, blockArgs BlockArgs) (map[string]interface{
 		}
 		fields["transactions"] = transactions
 
-		stakingTxs := b.StakingTransactions()
-		stakingTransactions := make([]interface{}, len(stakingTxs))
-		for i, tx := range stakingTxs {
-			if stakingTransactions[i], err = formatStakingTx(tx); err != nil {
-				return nil, err
+		if blockArgs.InclStaking {	
+			formatStakingTx := func(tx *types2.StakingTransaction) (interface{}, error) {
+				return tx.Hash(), nil
+			}
+			if blockArgs.FullTx {
+				formatStakingTx = func(tx *types2.StakingTransaction) (interface{}, error) {
+					return newRPCStakingTransactionFromBlockHash(b, tx.Hash()), nil
+				}
+			}
+			stakingTxs := b.StakingTransactions()
+			stakingTransactions := make([]interface{}, len(stakingTxs))
+			for i, tx := range stakingTxs {
+				if stakingTransactions[i], err = formatStakingTx(tx); err != nil {
+					return nil, err
+				}
 			}
+			fields["stakingTransactions"] = stakingTransactions
 		}
-		fields["stakingTransactions"] = stakingTransactions
 	}
 
 	uncles := b.Uncles()