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transactioninterface.go
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transactioninterface.go
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/*
github.com/tcrain/cons - Experimental project for testing and scaling consensus algorithms.
Copyright (C) 2020 The project authors - tcrain
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package transactionsm
import (
"github.com/tcrain/cons/consensus/utils"
"io"
)
type EncodeInterface interface {
Encode(writer io.Writer) (n int, err error)
Decode(reader io.Reader) (n int, err error)
}
// if two conflictobjects are equal then transactions conflict, otherwise they dont
type ConflictObject interface{}
type TransactionInterface interface {
GetConflictObjects() []ConflictObject
EncodeInterface
}
type TxAlloc func() TransactionInterface
type TransactionList struct {
Items []TransactionInterface
TxAlloc TxAlloc
}
func (tx *TransactionList) Encode(writer io.Writer) (n int, err error) {
n, err = utils.EncodeUint64(uint64(len(tx.Items)), writer)
if err != nil {
return
}
for _, nxt := range tx.Items {
var nxtSize int
nxtSize, err = nxt.Encode(writer)
n += nxtSize
if err != nil {
return
}
}
return
}
func (tx *TransactionList) Decode(reader io.Reader) (n int, err error) {
var v uint64
v, n, err = utils.ReadUint64(reader)
for i := 0; i < int(v); i++ {
nxt := tx.TxAlloc()
var nxtSize int
nxtSize, err = nxt.Decode(reader)
n += nxtSize
if err != nil {
return
}
tx.Items = append(tx.Items, nxt)
}
return
}