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sidechainpow.go
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sidechainpow.go
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// Copyright (c) 2017-2019 The Elastos Foundation
// Use of this source code is governed by an MIT
// license that can be found in the LICENSE file.
//
package payload
import (
"bytes"
"errors"
"io"
"github.com/elastos/Elastos.ELA/common"
)
const SideChainPowVersion byte = 0x00
type SideChainPow struct {
SideBlockHash common.Uint256
SideGenesisHash common.Uint256
BlockHeight uint32
Signature []byte
}
func (a *SideChainPow) Data(version byte) []byte {
buf := new(bytes.Buffer)
if err := a.Serialize(buf, version); err != nil {
return []byte{0}
}
return buf.Bytes()
}
func (a *SideChainPow) SerializeUnsigned(w io.Writer, version byte) error {
err := a.SideBlockHash.Serialize(w)
if err != nil {
return errors.New("[SideChainPow], SideBlockHash serialize failed.")
}
err = a.SideGenesisHash.Serialize(w)
if err != nil {
return errors.New("[SideChainPow], SideGenesisHash serialize failed.")
}
err = common.WriteUint32(w, a.BlockHeight)
if err != nil {
return errors.New("[SideChainPow], BlockHeight serialize failed.")
}
return nil
}
func (a *SideChainPow) Serialize(w io.Writer, version byte) error {
err := a.SerializeUnsigned(w, version)
if err != nil {
return err
}
err = common.WriteVarBytes(w, a.Signature)
if err != nil {
return errors.New("[SideChainPow], SignatureData serialize failed.")
}
return nil
}
func (a *SideChainPow) Deserialize(r io.Reader, version byte) error {
err := a.SideBlockHash.Deserialize(r)
if err != nil {
return errors.New("[SideChainPow], SignatureData dserialize failed.")
}
err = a.SideGenesisHash.Deserialize(r)
if err != nil {
return errors.New("[SideChainPow], SignatureData dserialize failed.")
}
a.BlockHeight, err = common.ReadUint32(r)
if err != nil {
return errors.New("[SideChainPow], SignatureData dserialize failed.")
}
if a.Signature, err = common.ReadVarBytes(r, MaxPayloadDataSize,
"payload sidechainpow signed data"); err != nil {
return errors.New("[SideChainPow], SignatureData dserialize failed.")
}
return nil
}