add default valueS

server/rosetta/services/construction.go

@@ -153,8 +153,8 @@ func (sn SingleNetwork) ConstructionMetadata(ctx context.Context, request *types
 
 	res := &types.ConstructionMetadataResponse{
 		Metadata: map[string]interface{}{
-			rosetta.AccountNumber: string(accountInfo.GetAccountNumber()),
-			rosetta.Sequence:      string(accountInfo.GetSequence()),
+			rosetta.AccountNumber: accountInfo.GetAccountNumber(),
+			rosetta.Sequence:      accountInfo.GetSequence(),
 			rosetta.ChainId:       status.NodeInfo.Network,
 			rosetta.OptionGas:     gas,
 			rosetta.OptionMemo:    memo,
@@ -197,7 +197,7 @@ func (sn SingleNetwork) ConstructionPayloads(ctx context.Context, request *types
 		return nil, rosetta.ErrInvalidOperation.RosettaError()
 	}
 
-	if request.Operations[0].Type != rosetta.OperationTransfer || request.Operations[1].Type != rosetta.OperationTransfer {
+	if request.Operations[0].Type != rosetta.OperationSend || request.Operations[1].Type != rosetta.OperationSend {
 		return nil, rosetta.WrapError(rosetta.ErrInvalidOperation, "the operations are not Transfer").RosettaError()
 	}
 
@@ -270,11 +270,16 @@ func (sn SingleNetwork) ConstructionPreprocess(ctx context.Context, request *typ
 		memo = ""
 	}
 
+	defaultGas := float64(200000)
+	gas := request.SuggestedFeeMultiplier
+	if gas == nil {
+		gas = &defaultGas
+	}
 	var res = &types.ConstructionPreprocessResponse{
 		Options: map[string]interface{}{
 			rosetta.OptionAddress: txData.FromAddress,
 			rosetta.OptionMemo:    memo,
-			rosetta.OptionGas:     request.SuggestedFeeMultiplier,
+			rosetta.OptionGas:     gas,
 		},
 	}
 	return res, nil

server/rosetta/services/utils.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"github.com/coinbase/rosetta-sdk-go/types"
 	"github.com/cosmos/cosmos-sdk/server/rosetta"
-	"strconv"
 )
 
 type PayloadReqMetadata struct {
@@ -26,27 +25,20 @@ func GetMetadataFromPayloadReq(req *types.ConstructionPayloadsRequest) (*Payload
 	if !ok {
 		return nil, fmt.Errorf("sequence metadata was not provided")
 	}
-	seqStr, ok := sequence.(string)
+	seqNum, ok := sequence.(float64)
 	if !ok {
 		return nil, fmt.Errorf("invalid sequence value")
 	}
-	seqNum, err := strconv.Atoi(seqStr)
-	if err != nil {
-		return nil, fmt.Errorf("error converting sequence num to int")
-	}
 
 	accountNum, ok := req.Metadata[rosetta.AccountNumber]
 	if !ok {
 		return nil, fmt.Errorf("account_number metadata was not provided")
 	}
-	accStr, ok := accountNum.(string)
+	accNum, ok := accountNum.(float64)
 	if !ok {
+		fmt.Printf("this is type %T", accountNum)
 		return nil, fmt.Errorf("invalid account_number value")
 	}
-	accNum, err := strconv.Atoi(accStr)
-	if err != nil {
-		return nil, fmt.Errorf("error converting account num to int")
-	}
 
 	gasNum, ok := req.Metadata[rosetta.OptionGas]
 	if !ok {
@@ -59,7 +51,7 @@ func GetMetadataFromPayloadReq(req *types.ConstructionPayloadsRequest) (*Payload
 
 	memo, ok := req.Metadata[rosetta.OptionMemo]
 	if !ok {
-		return nil, fmt.Errorf("memo metadata was not provided")
+		memo = ""
 	}
 	memoStr, ok := memo.(string)
 	if !ok {