add Destroy UTXO payload

add Destroy UTXO payload

Signed-off-by: luodanwg <luodan.wg@gmail.com>

Author: Arbio5zt

core/store/ChainStore/ChainStore.go

@@ -749,7 +749,8 @@ func (bd *ChainStore) persist(b *Block) error {
 			b.Transactions[i].TxType == tx.BookKeeper ||
 			b.Transactions[i].TxType == tx.PrivacyPayload ||
 			b.Transactions[i].TxType == tx.BookKeeping ||
-			b.Transactions[i].TxType == tx.DataFile {
+			b.Transactions[i].TxType == tx.DataFile ||
+			b.Transactions[i].TxType == tx.DestroyUTXO {
 			err = bd.SaveTransaction(b.Transactions[i], b.Blockdata.Height)
 			if err != nil {
 				return err
@@ -774,6 +775,20 @@ func (bd *ChainStore) persist(b *Block) error {
 			}
 		}
 
+		if b.Transactions[i].TxType == tx.DestroyUTXO {
+			results, err := b.Transactions[i].GetMergedAssetIDValueFromReference()
+			if err != nil {
+				log.Error("[GetMergedAssetIDValueFromReference] failed.")
+			}
+			for assetId, value := range results {
+				if _, ok := quantities[assetId]; !ok {
+					quantities[assetId] -= value
+				} else {
+					quantities[assetId] -= value
+				}
+			}
+		}
+
 		for index := 0; index < len(b.Transactions[i].Outputs); index++ {
 			output := b.Transactions[i].Outputs[index]
 			programHash := output.ProgramHash

core/transaction/TransactionBuilder.go

@@ -142,3 +142,19 @@ func NewDataFileTransaction(path string, fileName string, note string, issuer *c
 		Programs:      []*program.Program{},
 	}, nil
 }
+
+func NewDestroyUTXOTransaction(inputs []*UTXOTxInput) (*Transaction, error) {
+
+	//TODO: check arguments
+
+	destroyUTXO := &payload.DestroyUTXO{}
+
+	return &Transaction{
+		TxType:        DestroyUTXO,
+		Payload:       destroyUTXO,
+		Attributes:    []*TxAttribute{},
+		UTXOInputs:    inputs,
+		BalanceInputs: []*BalanceTxInput{},
+		Programs:      []*program.Program{},
+	}, nil
+}

core/transaction/payload/DestroyUTXO.go

@@ -0,0 +1,20 @@
+package payload
+
+import "io"
+
+type DestroyUTXO struct {
+}
+
+func (a *DestroyUTXO) Data() []byte {
+	//TODO: implement TransferAsset.Data()
+	return []byte{0}
+
+}
+
+func (a *DestroyUTXO) Serialize(w io.Writer) error {
+	return nil
+}
+
+func (a *DestroyUTXO) Deserialize(r io.Reader) error {
+	return nil
+}

core/transaction/transaction.go

@@ -32,6 +32,7 @@ const (
 	Record         TransactionType = 0x81
 	DeployCode     TransactionType = 0xd0
 	DataFile       TransactionType = 0x12
+	DestroyUTXO    TransactionType = 0x18
 )
 
 //Payload define the func for loading the payload data
@@ -202,6 +203,8 @@ func (tx *Transaction) DeserializeUnsignedWithoutType(r io.Reader) error {
 		tx.Payload = new(payload.PrivacyPayload)
 	case DataFile:
 		tx.Payload = new(payload.DataFile)
+	case DestroyUTXO:
+		tx.Payload = new(payload.DestroyUTXO)
 	default:
 		return errors.New("[Transaction],invalide transaction type.")
 	}
@@ -342,6 +345,7 @@ func (tx *Transaction) GetProgramHashes() ([]Uint160, error) {
 			return nil, NewDetailErr(err, ErrNoCode, "[Transaction], GetProgramHashes ToCodeHash failed.")
 		}
 		hashs = append(hashs, astHash)
+	case DestroyUTXO:
 	default:
 	}
 	//remove dupilicated hashes

core/validation/txValidator.go

@@ -238,10 +238,10 @@ func CheckTransactionPayload(Tx *tx.Transaction) error {
 		return nil
 	case *payload.RegisterAsset:
 		if pld.Asset.Precision < asset.MinPrecision || pld.Asset.Precision > asset.MaxPrecision {
-			return errors.New("Invalide asset Precision.")
+			return errors.New("[CheckTransactionPayload],invalid asset Precision.")
 		}
 		if checkAmountPrecise(pld.Amount, pld.Asset.Precision) {
-			return errors.New("Invalide asset value,out of precise.")
+			return errors.New("[CheckTransactionPayload],invalid asset value,out of precise.")
 		}
 	case *payload.IssueAsset:
 	case *payload.TransferAsset:
@@ -250,8 +250,12 @@ func CheckTransactionPayload(Tx *tx.Transaction) error {
 	case *payload.Record:
 	case *payload.DeployCode:
 	case *payload.DataFile:
+	case *payload.DestroyUTXO:
+		if len(Tx.Outputs)>0{
+			return  errors.New("[CheckTransactionPayload],invalid transaction outputs.")
+		}
 	default:
-		return errors.New("[txValidator],invalidate transaction payload type.")
+		return errors.New("[CheckTransactionPayload],invalid transaction payload type.")
 	}
 	return nil
 }

net/httpjsonrpc/TransPayloadToHex.go

@@ -137,6 +137,7 @@ func TransPayloadToHex(p Payload) PayloadInfo {
 		obj.Issuer.X = object.Issuer.X.String()
 		obj.Issuer.Y = object.Issuer.Y.String()
 		return obj
+	case *payload.DestroyUTXO:
 	}
 	return nil
 }