neoneo-go/pkg/core/transaction/attribute.go

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package transaction
import (
Implemented rpc server method GetRawTransaction (#135) * Added utility function GetVarSize * 1) Added Size method: this implied that Fixed8 implements now the serializable interface. 2) Added few arithmetic operation (Add, Sub, div): this will be used to calculated networkfeeand feePerByte. Changed return value of the Value() method to int instead of int64. Modified fixed8_test accordingly. * Implemented Size or MarshalJSON method. - Structs accepting the Size method implement the serializable interface. - Structs accepting the MarshalJSON method implements the customized json marshaller interface. * Added fee calculation * Implemented rcp server method GetRawTransaction * Updated Tests * Fixed: 1) NewFixed8 will accept as input int64 2) race condition affecting configDeafault, blockchainDefault * Simplified Size calculation * 1) Removed global variable blockchainDefault, configDefault 2) Extended Blockchainer interface to include the methods: References, FeePerByte, SystemFee, NetworkFee 3) Deleted fee_test.go, fee.go. Moved corresponding methods to blockchain_test.go and blockchain.go respectively 4) Amended tx_raw_output.go * Simplified GetVarSize Method * Replaced ValueAtAndType with ValueWithType * Cosmetic changes + Added test case getrawtransaction_7 * Clean up Print statement * Filled up keys * Aligned verbose logic with the C#-neo implementation * Implemented @Kim requests Refactor server_test.go * Small fixes * Fixed verbose logic Added more tests Cosmetic changes * Replaced assert.NoError with require.NoError * Fixed tests by adding context.Background() as argument * Fixed tests
2019-02-20 17:39:32 +00:00
"encoding/hex"
"encoding/json"
"fmt"
"github.com/CityOfZion/neo-go/pkg/io"
)
// Attribute represents a Transaction attribute.
type Attribute struct {
Usage AttrUsage
Data []byte
}
// DecodeBinary implements the Payload interface.
func (attr *Attribute) DecodeBinary(br *io.BinReader) error {
br.ReadLE(&attr.Usage)
// very special case
if attr.Usage == ECDH02 || attr.Usage == ECDH03 {
attr.Data = make([]byte, 33)
attr.Data[0] = byte(attr.Usage)
br.ReadLE(attr.Data[1:])
return br.Err
}
var datasize uint64
switch attr.Usage {
case ContractHash, Vote, Hash1, Hash2, Hash3, Hash4, Hash5,
Hash6, Hash7, Hash8, Hash9, Hash10, Hash11, Hash12, Hash13,
Hash14, Hash15:
datasize = 32
case Script:
datasize = 20
case DescriptionURL:
// It's not VarUint as per C# implementation, dunno why
var urllen uint8
br.ReadLE(&urllen)
datasize = uint64(urllen)
case Description, Remark, Remark1, Remark2, Remark3, Remark4,
Remark5, Remark6, Remark7, Remark8, Remark9, Remark10, Remark11,
Remark12, Remark13, Remark14, Remark15:
datasize = br.ReadVarUint()
default:
return fmt.Errorf("failed decoding TX attribute usage: 0x%2x", int(attr.Usage))
}
attr.Data = make([]byte, datasize)
br.ReadLE(attr.Data)
return br.Err
}
// EncodeBinary implements the Payload interface.
func (attr *Attribute) EncodeBinary(bw *io.BinWriter) error {
bw.WriteLE(&attr.Usage)
switch attr.Usage {
case ECDH02, ECDH03:
bw.WriteLE(attr.Data[1:])
case Description, Remark, Remark1, Remark2, Remark3, Remark4,
Remark5, Remark6, Remark7, Remark8, Remark9, Remark10, Remark11,
Remark12, Remark13, Remark14, Remark15:
bw.WriteBytes(attr.Data)
case DescriptionURL:
var urllen = uint8(len(attr.Data))
bw.WriteLE(urllen)
fallthrough
case Script, ContractHash, Vote, Hash1, Hash2, Hash3, Hash4, Hash5, Hash6,
Hash7, Hash8, Hash9, Hash10, Hash11, Hash12, Hash13, Hash14, Hash15:
bw.WriteLE(attr.Data)
default:
return fmt.Errorf("failed encoding TX attribute usage: 0x%2x", attr.Usage)
}
return bw.Err
}
Implemented rpc server method GetRawTransaction (#135) * Added utility function GetVarSize * 1) Added Size method: this implied that Fixed8 implements now the serializable interface. 2) Added few arithmetic operation (Add, Sub, div): this will be used to calculated networkfeeand feePerByte. Changed return value of the Value() method to int instead of int64. Modified fixed8_test accordingly. * Implemented Size or MarshalJSON method. - Structs accepting the Size method implement the serializable interface. - Structs accepting the MarshalJSON method implements the customized json marshaller interface. * Added fee calculation * Implemented rcp server method GetRawTransaction * Updated Tests * Fixed: 1) NewFixed8 will accept as input int64 2) race condition affecting configDeafault, blockchainDefault * Simplified Size calculation * 1) Removed global variable blockchainDefault, configDefault 2) Extended Blockchainer interface to include the methods: References, FeePerByte, SystemFee, NetworkFee 3) Deleted fee_test.go, fee.go. Moved corresponding methods to blockchain_test.go and blockchain.go respectively 4) Amended tx_raw_output.go * Simplified GetVarSize Method * Replaced ValueAtAndType with ValueWithType * Cosmetic changes + Added test case getrawtransaction_7 * Clean up Print statement * Filled up keys * Aligned verbose logic with the C#-neo implementation * Implemented @Kim requests Refactor server_test.go * Small fixes * Fixed verbose logic Added more tests Cosmetic changes * Replaced assert.NoError with require.NoError * Fixed tests by adding context.Background() as argument * Fixed tests
2019-02-20 17:39:32 +00:00
// MarshalJSON implements the json Marschaller interface
func (attr *Attribute) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]string{
"usage": attr.Usage.String(),
"data": hex.EncodeToString(attr.Data),
})
}