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prepare_request.go
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prepare_request.go
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/*
* Copyright (C) 2018 The DNA Authors
* This file is part of The DNA library.
*
* The DNA is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The DNA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The DNA. If not, see <http://www.gnu.org/licenses/>.
*/
package dbft
import (
"fmt"
"io"
"github.com/dnaproject2/DNA/common"
"github.com/dnaproject2/DNA/common/log"
"github.com/dnaproject2/DNA/core/types"
)
type PrepareRequest struct {
msgData ConsensusMessageData
Nonce uint64
NextBookkeeper common.Address
Transactions []*types.Transaction
Signature []byte
}
func (pr *PrepareRequest) Serialization(sink *common.ZeroCopySink) {
pr.msgData.Serialization(sink)
sink.WriteVarUint(pr.Nonce)
sink.WriteAddress(pr.NextBookkeeper)
sink.WriteVarUint(uint64(len(pr.Transactions)))
for _, t := range pr.Transactions {
t.Serialization(sink)
}
sink.WriteVarBytes(pr.Signature)
}
func (pr *PrepareRequest) Deserialization(source *common.ZeroCopySource) error {
pr.msgData = ConsensusMessageData{}
err := pr.msgData.Deserialization(source)
if err != nil {
return err
}
nonce, _, irregular, eof := source.NextVarUint()
if irregular {
return common.ErrIrregularData
}
if eof {
return io.ErrUnexpectedEOF
}
pr.Nonce = nonce
pr.NextBookkeeper, eof = source.NextAddress()
var length uint64
length, _, irregular, eof = source.NextVarUint()
if irregular {
return common.ErrIrregularData
}
for i := 0; i < int(length); i++ {
var t types.Transaction
if err := t.Deserialization(source); err != nil {
return fmt.Errorf("[PrepareRequest] transactions deserialization failed: %s", err)
}
pr.Transactions = append(pr.Transactions, &t)
}
pr.Signature, _, irregular, eof = source.NextVarBytes()
if irregular {
return common.ErrIrregularData
}
if eof {
return io.ErrUnexpectedEOF
}
return nil
}
func (pr *PrepareRequest) Type() ConsensusMessageType {
log.Debug()
return pr.ConsensusMessageData().Type
}
func (pr *PrepareRequest) ViewNumber() byte {
log.Debug()
return pr.msgData.ViewNumber
}
func (pr *PrepareRequest) ConsensusMessageData() *ConsensusMessageData {
log.Debug()
return &(pr.msgData)
}