8 btmTypes "github.com/bytom/protocol/bc/types"
9 "github.com/jinzhu/gorm"
10 log "github.com/sirupsen/logrus"
12 "github.com/vapor/crypto/ed25519/chainkd"
13 "github.com/vapor/errors"
14 "github.com/vapor/federation/common"
15 "github.com/vapor/federation/config"
16 "github.com/vapor/federation/database/orm"
17 "github.com/vapor/federation/service"
18 vaporBc "github.com/vapor/protocol/bc"
19 vaporTypes "github.com/vapor/protocol/bc/types"
22 var collectInterval = 5 * time.Second
24 var xprvStr = "d20e3d81ba2c5509619fbc276d7cd8b94f52a1dce1291ae9e6b28d4a48ee67d8ac5826ba65c9da0b035845b7cb379e816c529194c7e369492d8828dee5ede3e2"
26 func string2xprv(str string) (xprv chainkd.XPrv) {
27 if err := xprv.UnmarshalText([]byte(str)); err != nil {
28 log.Panicf("fail to convert xprv string")
35 txCh chan *orm.CrossTransaction
40 mainchainNode *service.Node
41 sidechainNode *service.Node
42 remotes []*service.Warder
45 func NewWarder(db *gorm.DB, cfg *config.Config) *warder {
46 local, remotes := parseWarders(cfg)
49 txCh: make(chan *orm.CrossTransaction),
50 fedProg: ParseFedProg(cfg.Warders, cfg.Quorum),
51 position: local.Position,
54 xprv: string2xprv(xprvStr),
55 mainchainNode: service.NewNode(cfg.Mainchain.Upstream),
56 sidechainNode: service.NewNode(cfg.Sidechain.Upstream),
61 func parseWarders(cfg *config.Config) (*service.Warder, []*service.Warder) {
62 var local *service.Warder
63 var remotes []*service.Warder
64 for _, warderCfg := range cfg.Warders {
65 // TODO: use private key to check
66 if warderCfg.IsLocal {
67 local = service.NewWarder(&warderCfg)
69 remoteWarder := service.NewWarder(&warderCfg)
70 remotes = append(remotes, remoteWarder)
75 log.Fatal("none local warder set")
81 func (w *warder) Run() {
82 go w.collectPendingTx()
83 go w.processCrossTxRoutine()
86 func (w *warder) collectPendingTx() {
87 ticker := time.NewTicker(collectInterval)
88 for ; true; <-ticker.C {
89 txs := []*orm.CrossTransaction{}
90 if err := w.db.Preload("Chain").Preload("Reqs").
91 // do not use "Where(&orm.CrossTransaction{Status: common.CrossTxPendingStatus})" directly,
92 // otherwise the field "status" will be ignored
93 Model(&orm.CrossTransaction{}).Where("status = ?", common.CrossTxPendingStatus).
94 Find(&txs).Error; err == gorm.ErrRecordNotFound {
96 } else if err != nil {
97 log.Warnln("collectPendingTx", err)
100 for _, tx := range txs {
106 func (w *warder) processCrossTxRoutine() {
107 for ormTx := range w.txCh {
108 if err := w.validateCrossTx(ormTx); err != nil {
109 log.Warnln("invalid cross-chain tx", ormTx)
113 destTx, destTxID, err := w.proposeDestTx(ormTx)
115 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("proposeDestTx")
119 if err := w.signDestTx(destTx, ormTx); err != nil {
120 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("signDestTx")
124 for _, remote := range w.remotes {
125 signs, err := remote.RequestSign(destTx, ormTx)
127 log.WithFields(log.Fields{"err": err, "remote": remote, "cross-chain tx": ormTx}).Warnln("RequestSign")
131 w.attachSignsForTx(destTx, ormTx, remote.Position, signs)
134 if w.isTxSignsReachQuorum(destTx) && w.isLeader() {
135 submittedTxID, err := w.submitTx(destTx)
137 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx, "dest tx": destTx}).Warnln("submitTx")
141 if submittedTxID != destTxID {
142 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx, "builtTx ID": destTxID, "submittedTx ID": submittedTxID}).Warnln("submitTx ID mismatch")
146 if err := w.updateSubmission(ormTx); err != nil {
147 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("updateSubmission")
154 func (w *warder) validateCrossTx(tx *orm.CrossTransaction) error {
156 case common.CrossTxRejectedStatus:
157 return errors.New("cross-chain tx rejected")
158 case common.CrossTxSubmittedStatus:
159 return errors.New("cross-chain tx submitted")
160 case common.CrossTxCompletedStatus:
161 return errors.New("cross-chain tx completed")
167 func (w *warder) proposeDestTx(tx *orm.CrossTransaction) (interface{}, string, error) {
168 switch tx.Chain.Name {
170 return w.buildSidechainTx(tx)
172 return w.buildMainchainTx(tx)
174 return nil, "", errors.New("unknown source chain")
180 // addInputWitness(tx, signInsts)?
181 func (w *warder) buildSidechainTx(ormTx *orm.CrossTransaction) (*vaporTypes.Tx, string, error) {
182 destTxData := &vaporTypes.TxData{Version: 1, TimeRange: 0}
183 // signInsts := []*SigningInstruction{}
184 muxID := &vaporBc.Hash{}
185 if err := muxID.UnmarshalText([]byte(ormTx.SourceMuxID)); err != nil {
186 return nil, "", errors.Wrap(err, "Unmarshal muxID")
189 for _, req := range ormTx.Reqs {
191 // getAsset from assetKeeper instead of preload asset, in order to save db query overload
192 asset := &orm.Asset{}
193 assetID := &vaporBc.AssetID{}
194 if err := assetID.UnmarshalText([]byte(asset.AssetID)); err != nil {
195 return nil, "", errors.Wrap(err, "Unmarshal muxID")
198 rawDefinitionByte, err := hex.DecodeString(asset.RawDefinitionByte)
200 return nil, "", errors.Wrap(err, "decode rawDefinitionByte")
203 input := vaporTypes.NewCrossChainInput(nil, *muxID, *assetID, req.AssetAmount, req.SourcePos, w.fedProg, rawDefinitionByte)
204 destTxData.Inputs = append(destTxData.Inputs, input)
209 // txInput := btmTypes.NewSpendInput(nil, *utxoInfo.SourceID, *assetID, utxo.Amount, utxoInfo.SourcePos, cp)
210 // tx.Inputs = append(tx.Inputs, txInput)
212 // signInst := &SigningInstruction{}
213 // if utxo.Address == nil || utxo.Address.Wallet == nil {
214 // return signInst, nil
217 // path := pathForAddress(utxo.Address.Wallet.Idx, utxo.Address.Idx, utxo.Address.Change)
218 // for _, p := range path {
219 // signInst.DerivationPath = append(signInst.DerivationPath, hex.EncodeToString(p))
222 // xPubs, err := signersToXPubs(utxo.Address.Wallet.WalletSigners)
224 // return nil, errors.Wrap(err, "signersToXPubs")
227 // derivedXPubs := chainkd.DeriveXPubs(xPubs, path)
228 // derivedPKs := chainkd.XPubKeys(derivedXPubs)
229 // if len(derivedPKs) == 1 {
230 // signInst.DataWitness = derivedPKs[0]
231 // signInst.Pubkey = hex.EncodeToString(derivedPKs[0])
232 // } else if len(derivedPKs) > 1 {
233 // if signInst.DataWitness, err = vmutil.P2SPMultiSigProgram(derivedPKs, int(utxo.Address.Wallet.M)); err != nil {
237 // return signInst, nil
239 // signInsts = append(signInsts, signInst)
243 // add the payment output && handle the fee
244 // if err := addOutput(txData, address, asset, amount, netParams); err != nil {
245 // return nil, nil, errors.Wrap(err, "add payment output")
248 destTx := vaporTypes.NewTx(*destTxData)
249 // addInputWitness(tx, signInsts)
251 if err := w.db.Where(ormTx).UpdateColumn(&orm.CrossTransaction{
252 DestTxHash: sql.NullString{destTx.ID.String(), true},
253 }).Error; err != nil {
257 return destTx, destTx.ID.String(), nil
261 func (w *warder) buildMainchainTx(tx *orm.CrossTransaction) (*btmTypes.Tx, string, error) {
262 mainchainTx := &btmTypes.Tx{}
264 if err := w.db.Where(tx).UpdateColumn(&orm.CrossTransaction{
265 DestTxHash: sql.NullString{mainchainTx.ID.String(), true},
266 }).Error; err != nil {
270 return mainchainTx, mainchainTx.ID.String(), nil
274 func (w *warder) signDestTx(destTx interface{}, tx *orm.CrossTransaction) error {
275 if tx.Status != common.CrossTxPendingStatus || !tx.DestTxHash.Valid {
276 return errors.New("cross-chain tx status error")
283 func (w *warder) attachSignsForTx(destTx interface{}, ormTx *orm.CrossTransaction, position uint8, signs string) {
287 func (w *warder) isTxSignsReachQuorum(destTx interface{}) bool {
291 func (w *warder) isLeader() bool {
292 return w.position == 1
295 func (w *warder) submitTx(destTx interface{}) (string, error) {
296 switch tx := destTx.(type) {
298 return w.mainchainNode.SubmitTx(tx)
300 return w.sidechainNode.SubmitTx(tx)
302 return "", errors.New("unknown destTx type")
306 func (w *warder) updateSubmission(tx *orm.CrossTransaction) error {
307 if err := w.db.Where(tx).UpdateColumn(&orm.CrossTransaction{
308 Status: common.CrossTxSubmittedStatus,
309 }).Error; err != nil {
313 for _, remote := range w.remotes {
314 remote.NotifySubmission(tx)