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transaction_builder.go
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/
transaction_builder.go
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/*
* Copyright (C) 2018 The ontology Authors
* This file is part of The ontology library.
*
* The ontology 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 ontology 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 ontology. If not, see <http://www.gnu.org/licenses/>.
*/
package utils
import (
"bytes"
"math/big"
"github.com/ontio/ontology/common"
"github.com/ontio/ontology/core/payload"
"github.com/ontio/ontology/core/types"
neovm "github.com/ontio/ontology/smartcontract/service/neovm"
vm "github.com/ontio/ontology/vm/neovm"
"math"
)
// NewDeployTransaction returns a deploy Transaction
func NewDeployTransaction(code []byte, name, version, author, email, desp string, needStorage bool) *types.Transaction {
//TODO: check arguments
DeployCodePayload := &payload.DeployCode{
Code: code,
NeedStorage: needStorage,
Name: name,
Version: version,
Author: author,
Email: email,
Description: desp,
}
return &types.Transaction{
TxType: types.Deploy,
Payload: DeployCodePayload,
}
}
// NewInvokeTransaction returns an invoke Transaction
func NewInvokeTransaction(code []byte) *types.Transaction {
//TODO: check arguments
invokeCodePayload := &payload.InvokeCode{
Code: code,
}
return &types.Transaction{
TxType: types.Invoke,
Payload: invokeCodePayload,
}
}
func BuildNativeTransaction(addr common.Address, initMethod string, args []byte) *types.Transaction {
bf := new(bytes.Buffer)
builder := vm.NewParamsBuilder(bf)
builder.EmitPushByteArray(args)
builder.EmitPushByteArray([]byte(initMethod))
builder.EmitPushByteArray(addr[:])
builder.EmitPushInteger(big.NewInt(0))
builder.Emit(vm.SYSCALL)
builder.EmitPushByteArray([]byte(neovm.NATIVE_INVOKE_NAME))
tx := NewInvokeTransaction(builder.ToArray())
tx.GasLimit = math.MaxUint64
return tx
}