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paracross.go
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/
paracross.go
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// Copyright Fuzamei Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package executor
import (
"bytes"
"encoding/hex"
log "github.com/33cn/chain33/common/log/log15"
drivers "github.com/33cn/chain33/system/dapp"
"github.com/33cn/chain33/types"
"github.com/33cn/chain33/util"
pt "github.com/GM-Publicchain/gm/plugin/dapp/paracross/types"
"github.com/pkg/errors"
)
var (
clog = log.New("module", "execs.paracross")
enableParacrossTransfer = true
driverName = pt.ParaX
)
// Paracross exec
type Paracross struct {
drivers.DriverBase
}
func init() {
ety := types.LoadExecutorType(driverName)
ety.InitFuncList(types.ListMethod(&Paracross{}))
}
//Init paracross exec register
func Init(name string, sub []byte) {
drivers.Register(GetName(), newParacross, types.GetDappFork(driverName, "Enable"))
setPrefix()
}
//GetName return paracross name
func GetName() string {
return newParacross().GetName()
}
func newParacross() drivers.Driver {
c := &Paracross{}
c.SetChild(c)
c.SetExecutorType(types.LoadExecutorType(driverName))
return c
}
// GetDriverName return paracross driver name
func (c *Paracross) GetDriverName() string {
return pt.ParaX
}
func (c *Paracross) checkTxGroup(tx *types.Transaction, index int) ([]*types.Transaction, error) {
if tx.GroupCount >= 2 {
txs, err := c.GetTxGroup(index)
if err != nil {
clog.Error("ParacrossActionAssetTransfer", "get tx group failed", err, "hash", hex.EncodeToString(tx.Hash()))
return nil, err
}
return txs, nil
}
return nil, nil
}
func (c *Paracross) saveLocalParaTxs(tx *types.Transaction, isDel bool) (*types.LocalDBSet, error) {
var set types.LocalDBSet
var payload pt.ParacrossAction
err := types.Decode(tx.Payload, &payload)
if err != nil {
return nil, err
}
if payload.Ty != pt.ParacrossActionCommit || payload.GetCommit() == nil {
return nil, nil
}
commit := payload.GetCommit()
crossTxHashs, crossTxResult, err := getCrossTxHashs(c.GetAPI(), commit)
if err != nil {
return nil, err
}
if len(crossTxHashs) == 0 {
return &set, nil
}
for i := 0; i < len(crossTxHashs); i++ {
success := util.BitMapBit(crossTxResult, uint32(i))
paraTx, err := GetTx(c.GetAPI(), crossTxHashs[i])
if err != nil {
clog.Crit("paracross.Commit Load Tx failed", "para title", commit.Status.Title,
"para height", commit.Status.Height, "para tx index", i, "error", err, "txHash",
hex.EncodeToString(crossTxHashs[i]))
return nil, err
}
var payload pt.ParacrossAction
err = types.Decode(paraTx.Tx.Payload, &payload)
if err != nil {
clog.Crit("paracross.Commit Decode Tx failed", "para title", commit.Status.Title,
"para height", commit.Status.Height, "para tx index", i, "error", err, "txHash",
hex.EncodeToString(crossTxHashs[i]))
return nil, err
}
if payload.Ty == pt.ParacrossActionAssetTransfer {
kv, err := c.updateLocalAssetTransfer(tx, paraTx.Tx, success, isDel)
if err != nil {
return nil, err
}
set.KV = append(set.KV, kv)
} else if payload.Ty == pt.ParacrossActionAssetWithdraw {
kv, err := c.initLocalAssetWithdraw(tx, paraTx.Tx, true, success, isDel)
if err != nil {
return nil, err
}
set.KV = append(set.KV, kv)
}
}
return &set, nil
}
func getCommitHeight(payload []byte) (int64, error) {
var a pt.ParacrossAction
err := types.Decode(payload, &a)
if err != nil {
return 0, err
}
if a.GetCommit() == nil {
return 0, types.ErrInvalidParam
}
return a.GetCommit().Status.Height, nil
}
func (c *Paracross) initLocalAssetTransfer(tx *types.Transaction, success, isDel bool) (*types.KeyValue, error) {
clog.Debug("para execLocal", "tx hash", hex.EncodeToString(tx.Hash()), "action name", log.Lazy{Fn: tx.ActionName})
key := calcLocalAssetKey(tx.Hash())
if isDel {
c.GetLocalDB().Set(key, nil)
return &types.KeyValue{Key: key, Value: nil}, nil
}
var payload pt.ParacrossAction
err := types.Decode(tx.Payload, &payload)
if err != nil {
return nil, err
}
if payload.GetAssetTransfer() == nil {
return nil, errors.New("GetAssetTransfer is nil")
}
exec := "coins"
symbol := types.BTY
if payload.GetAssetTransfer().Cointoken != "" {
exec = "token"
symbol = payload.GetAssetTransfer().Cointoken
}
var asset pt.ParacrossAsset
amount, err := tx.Amount()
if err != nil {
return nil, err
}
asset = pt.ParacrossAsset{
From: tx.From(),
To: tx.To,
Amount: amount,
IsWithdraw: false,
TxHash: tx.Hash(),
Height: c.GetHeight(),
Exec: exec,
Symbol: symbol,
}
err = c.GetLocalDB().Set(key, types.Encode(&asset))
if err != nil {
clog.Error("para execLocal", "set", hex.EncodeToString(tx.Hash()), "failed", err)
}
return &types.KeyValue{Key: key, Value: types.Encode(&asset)}, nil
}
func (c *Paracross) initLocalAssetWithdraw(txCommit, tx *types.Transaction, isWithdraw, success, isDel bool) (*types.KeyValue, error) {
key := calcLocalAssetKey(tx.Hash())
if isDel {
c.GetLocalDB().Set(key, nil)
return &types.KeyValue{Key: key, Value: nil}, nil
}
var asset pt.ParacrossAsset
amount, err := tx.Amount()
if err != nil {
return nil, err
}
asset.ParaHeight, err = getCommitHeight(txCommit.Payload)
if err != nil {
return nil, err
}
var payload pt.ParacrossAction
err = types.Decode(tx.Payload, &payload)
if err != nil {
return nil, err
}
if payload.GetAssetWithdraw() == nil {
return nil, errors.New("GetAssetWithdraw is nil")
}
exec := "coins"
symbol := types.BTY
if payload.GetAssetWithdraw().Cointoken != "" {
exec = "token"
symbol = payload.GetAssetWithdraw().Cointoken
}
asset = pt.ParacrossAsset{
From: tx.From(),
To: tx.To,
Amount: amount,
IsWithdraw: isWithdraw,
TxHash: tx.Hash(),
Height: c.GetHeight(),
Exec: exec,
Symbol: symbol,
}
asset.CommitDoneHeight = c.GetHeight()
asset.Success = success
err = c.GetLocalDB().Set(key, types.Encode(&asset))
if err != nil {
clog.Error("para execLocal", "set", "", "failed", err)
}
return &types.KeyValue{Key: key, Value: types.Encode(&asset)}, nil
}
func (c *Paracross) updateLocalAssetTransfer(txCommit, tx *types.Transaction, success, isDel bool) (*types.KeyValue, error) {
clog.Debug("para execLocal", "tx hash", hex.EncodeToString(tx.Hash()))
key := calcLocalAssetKey(tx.Hash())
var asset pt.ParacrossAsset
v, err := c.GetLocalDB().Get(key)
if err != nil {
return nil, err
}
err = types.Decode(v, &asset)
if err != nil {
panic(err)
}
if !isDel {
asset.ParaHeight, err = getCommitHeight(txCommit.Payload)
if err != nil {
return nil, err
}
asset.CommitDoneHeight = c.GetHeight()
asset.Success = success
} else {
asset.ParaHeight = 0
asset.CommitDoneHeight = 0
asset.Success = false
}
c.GetLocalDB().Set(key, types.Encode(&asset))
return &types.KeyValue{Key: key, Value: types.Encode(&asset)}, nil
}
//IsFriend call exec is same seariase exec
func (c *Paracross) IsFriend(myexec, writekey []byte, tx *types.Transaction) bool {
//不允许平行链
if types.IsPara() {
return false
}
//friend 调用必须是自己在调用
if string(myexec) != c.GetDriverName() {
return false
}
//只允许同系列的执行器(tx 也必须是 paracross)
if string(types.GetRealExecName(tx.Execer)) != c.GetDriverName() {
return false
}
//只允许跨链交易
return c.allow(tx, 0) == nil
}
func (c *Paracross) allow(tx *types.Transaction, index int) error {
// 增加新的规则: 在主链执行器带着title的 asset-transfer/asset-withdraw 交易允许执行
// 1. user.p.${tilte}.${paraX}
// 1. payload 的 actionType = t/w
if !types.IsPara() && c.allowIsParaTx(tx.Execer) {
var payload pt.ParacrossAction
err := types.Decode(tx.Payload, &payload)
if err != nil {
return err
}
if payload.Ty == pt.ParacrossActionAssetTransfer || payload.Ty == pt.ParacrossActionAssetWithdraw {
return nil
}
if types.IsDappFork(c.GetHeight(), pt.ParaX, pt.ForkCommitTx) {
if payload.Ty == pt.ParacrossActionCommit || payload.Ty == pt.ParacrossActionNodeConfig ||
payload.Ty == pt.ParacrossActionNodeGroupApply {
return nil
}
}
}
return types.ErrNotAllow
}
// Allow add paracross allow rule
func (c *Paracross) Allow(tx *types.Transaction, index int) error {
//默认规则
err := c.DriverBase.Allow(tx, index)
if err == nil {
return nil
}
//paracross 添加的规则
return c.allow(tx, index)
}
func (c *Paracross) allowIsParaTx(execer []byte) bool {
if !bytes.HasPrefix(execer, types.ParaKey) {
return false
}
count := 0
index := 0
s := len(types.ParaKey)
for i := s; i < len(execer); i++ {
if execer[i] == '.' {
count++
index = i
}
}
if count == 1 && c.AllowIsSame(execer[index+1:]) {
return true
}
return false
}
// CheckReceiptExecOk return true to check if receipt ty is ok
func (c *Paracross) CheckReceiptExecOk() bool {
return true
}