9 btmTypes "github.com/bytom/protocol/bc/types"
10 "github.com/jinzhu/gorm"
11 log "github.com/sirupsen/logrus"
13 "github.com/vapor/crypto/ed25519/chainkd"
14 "github.com/vapor/errors"
15 "github.com/vapor/federation/common"
16 "github.com/vapor/federation/config"
17 "github.com/vapor/federation/database"
18 "github.com/vapor/federation/database/orm"
19 "github.com/vapor/federation/service"
20 "github.com/vapor/federation/util"
21 vaporBc "github.com/vapor/protocol/bc"
22 vaporTypes "github.com/vapor/protocol/bc/types"
25 var collectInterval = 5 * time.Second
27 var errUnknownTxType = errors.New("unknown tx type")
31 assetStore *database.AssetStore
32 txCh chan *orm.CrossTransaction
37 mainchainNode *service.Node
38 sidechainNode *service.Node
39 remotes []*service.Warder
42 func NewWarder(db *gorm.DB, assetStore *database.AssetStore, cfg *config.Config) *warder {
43 local, remotes := parseWarders(cfg)
46 assetStore: assetStore,
47 txCh: make(chan *orm.CrossTransaction),
48 fedProg: util.ParseFedProg(cfg.Warders, cfg.Quorum),
49 position: local.Position,
51 xprv: string2xprv(xprvStr),
52 mainchainNode: service.NewNode(cfg.Mainchain.Upstream),
53 sidechainNode: service.NewNode(cfg.Sidechain.Upstream),
58 func parseWarders(cfg *config.Config) (*service.Warder, []*service.Warder) {
59 var local *service.Warder
60 var remotes []*service.Warder
61 for _, warderCfg := range cfg.Warders {
62 if warderCfg.IsLocal {
63 local = service.NewWarder(&warderCfg)
65 remote := service.NewWarder(&warderCfg)
66 remotes = append(remotes, remote)
71 log.Fatal("none local warder set")
77 func (w *warder) Run() {
78 ticker := time.NewTicker(collectInterval)
79 for ; true; <-ticker.C {
80 txs := []*orm.CrossTransaction{}
81 if err := w.db.Preload("Chain").Preload("Reqs").
82 // do not use "Where(&orm.CrossTransaction{Status: common.CrossTxInitiatedStatus})" directly,
83 // otherwise the field "status" will be ignored
84 Model(&orm.CrossTransaction{}).Where("status = ?", common.CrossTxInitiatedStatus).
85 Find(&txs).Error; err == gorm.ErrRecordNotFound {
87 } else if err != nil {
88 log.Warnln("collectPendingTx", err)
91 for _, tx := range txs {
92 go w.tryProcessCrossTx(tx)
97 func (w *warder) tryProcessCrossTx(ormTx *orm.CrossTransaction) error {
99 if err := w.processCrossTx(ormTx); err != nil {
104 return dbTx.Commit().Error
107 func (w *warder) processCrossTx(ormTx *orm.CrossTransaction) error {
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.initDestTxSigns(destTx, ormTx); err != nil {
120 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("initDestTxSigns")
124 signs, err := w.getSigns(destTx, ormTx)
126 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("getSigns")
130 w.attachSignsForTx(destTx, ormTx, w.position, signs)
132 for _, remote := range w.remotes {
133 signs, err := remote.RequestSigns(destTx, ormTx)
135 log.WithFields(log.Fields{"err": err, "remote": remote, "cross-chain tx": ormTx}).Warnln("RequestSign")
139 w.attachSignsForTx(destTx, ormTx, remote.Position, signs)
142 if w.isTxSignsReachQuorum(destTx) && w.isLeader() {
143 submittedTxID, err := w.submitTx(destTx)
145 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx, "dest tx": destTx}).Warnln("submitTx")
149 if submittedTxID != destTxID {
150 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx, "builtTx ID": destTxID, "submittedTx ID": submittedTxID}).Warnln("submitTx ID mismatch")
154 if err := w.updateSubmission(ormTx); err != nil {
155 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("updateSubmission")
163 func (w *warder) validateCrossTx(tx *orm.CrossTransaction) error {
165 case common.CrossTxRejectedStatus:
166 return errors.New("cross-chain tx rejected")
167 case common.CrossTxSubmittedStatus:
168 return errors.New("cross-chain tx submitted")
169 case common.CrossTxCompletedStatus:
170 return errors.New("cross-chain tx completed")
176 func (w *warder) proposeDestTx(tx *orm.CrossTransaction) (interface{}, string, error) {
177 switch tx.Chain.Name {
179 return w.buildSidechainTx(tx)
181 return w.buildMainchainTx(tx)
183 return nil, "", errors.New("unknown source chain")
187 func (w *warder) buildSidechainTx(ormTx *orm.CrossTransaction) (*vaporTypes.Tx, string, error) {
188 destTxData := &vaporTypes.TxData{Version: 1, TimeRange: 0}
189 muxID := &vaporBc.Hash{}
190 if err := muxID.UnmarshalText([]byte(ormTx.SourceMuxID)); err != nil {
191 return nil, "", errors.Wrap(err, "Unmarshal muxID")
194 for _, req := range ormTx.Reqs {
195 // getAsset from assetStore instead of preload asset, in order to save db query overload
196 asset, err := w.assetStore.GetByOrmID(req.AssetID)
198 return nil, "", errors.Wrap(err, "get asset by ormAsset ID")
201 assetID := &vaporBc.AssetID{}
202 if err := assetID.UnmarshalText([]byte(asset.AssetID)); err != nil {
203 return nil, "", errors.Wrap(err, "Unmarshal muxID")
206 rawDefinitionByte, err := hex.DecodeString(asset.RawDefinitionByte)
208 return nil, "", errors.Wrap(err, "decode rawDefinitionByte")
211 issuanceProgramByte, err := hex.DecodeString(asset.IssuanceProgram)
213 return nil, "", errors.Wrap(err, "decode issuanceProgramByte")
216 input := vaporTypes.NewCrossChainInput(nil, *muxID, *assetID, req.AssetAmount, req.SourcePos, 1, rawDefinitionByte, issuanceProgramByte)
217 destTxData.Inputs = append(destTxData.Inputs, input)
219 controlProgram, err := hex.DecodeString(req.Script)
221 return nil, "", errors.Wrap(err, "decode req.Script")
224 output := vaporTypes.NewIntraChainOutput(*assetID, req.AssetAmount, controlProgram)
225 destTxData.Outputs = append(destTxData.Outputs, output)
228 destTx := vaporTypes.NewTx(*destTxData)
229 w.addInputWitness(destTx)
231 if err := w.db.Model(&orm.CrossTransaction{}).
232 Where(&orm.CrossTransaction{ID: ormTx.ID}).
233 UpdateColumn(&orm.CrossTransaction{
234 DestTxHash: sql.NullString{destTx.ID.String(), true},
235 }).Error; err != nil {
239 return destTx, destTx.ID.String(), nil
242 func (w *warder) buildMainchainTx(ormTx *orm.CrossTransaction) (*btmTypes.Tx, string, error) {
243 return nil, "", errors.New("buildMainchainTx not implemented yet")
246 // tx is a pointer to types.Tx, so the InputArguments can be set and be valid afterward
247 func (w *warder) addInputWitness(tx interface{}) {
248 switch tx := tx.(type) {
250 args := [][]byte{w.fedProg}
251 for i := range tx.Inputs {
252 tx.SetInputArguments(uint32(i), args)
256 args := [][]byte{util.SegWitWrap(w.fedProg)}
257 for i := range tx.Inputs {
258 tx.SetInputArguments(uint32(i), args)
263 func (w *warder) initDestTxSigns(destTx interface{}, ormTx *orm.CrossTransaction) error {
264 for i := 1; i <= len(w.remotes)+1; i++ {
265 if err := w.db.Create(&orm.CrossTransactionSign{
266 CrossTransactionID: ormTx.ID,
268 Status: common.CrossTxSignPendingStatus,
269 }).Error; err != nil {
274 return w.db.Model(&orm.CrossTransaction{}).
275 Where(&orm.CrossTransaction{ID: ormTx.ID}).
276 UpdateColumn(&orm.CrossTransaction{
277 Status: common.CrossTxPendingStatus,
281 func (w *warder) getSignData(destTx interface{}) ([]string, error) {
282 var signData []string
284 switch destTx := destTx.(type) {
286 signData = make([]string, len(destTx.Inputs))
287 for i := range destTx.Inputs {
288 signHash := destTx.SigHash(uint32(i))
289 signData[i] = signHash.String()
293 signData = make([]string, len(destTx.Inputs))
294 for i := range destTx.Inputs {
295 signHash := destTx.SigHash(uint32(i))
296 signData[i] = signHash.String()
300 return []string{}, errUnknownTxType
306 func (w *warder) getSigns(destTx interface{}, ormTx *orm.CrossTransaction) ([]string, error) {
307 if ormTx.Status != common.CrossTxPendingStatus || !ormTx.DestTxHash.Valid {
308 return nil, errors.New("cross-chain tx status error")
311 signData, err := w.getSignData(destTx)
313 return nil, errors.New("getSignData")
317 for _, data := range signData {
319 // vaporBc.Hash & btmBc.Hash are marshaled in the same way
320 msg := &vaporBc.Hash{}
321 if err := msg.UnmarshalText([]byte(data)); err != nil {
322 return nil, errors.Wrap(err, "Unmarshal signData")
325 sign = w.xprv.Sign([]byte(msg.String()))
326 signs = append(signs, hex.EncodeToString(sign))
333 func (w *warder) attachSignsForTx(destTx interface{}, ormTx *orm.CrossTransaction, position uint8, signs []string) error {
335 switch destTx := destTx.(type) {
337 inputsLen = len(destTx.Inputs)
339 inputsLen = len(destTx.Inputs)
341 return errUnknownTxType
344 signWitness := make([][]string, inputsLen)
346 b, err := json.Marshal(signs)
348 return errors.Wrap(err, "marshal signs")
351 return w.db.Model(&orm.CrossTransactionSign{}).
352 Where(&orm.CrossTransactionSign{
353 CrossTransactionID: ormTx.ID,
354 WarderID: w.position,
356 UpdateColumn(&orm.CrossTransactionSign{
357 Signatures: string(b),
358 Status: common.CrossTxSignCompletedStatus,
363 func (w *warder) isTxSignsReachQuorum(destTx interface{}) bool {
367 func (w *warder) isLeader() bool {
368 return w.position == 1
371 func (w *warder) submitTx(destTx interface{}) (string, error) {
372 switch tx := destTx.(type) {
374 return w.mainchainNode.SubmitTx(tx)
376 return w.sidechainNode.SubmitTx(tx)
378 return "", errUnknownTxType
382 func (w *warder) updateSubmission(ormTx *orm.CrossTransaction) error {
383 if err := w.db.Model(&orm.CrossTransaction{}).
384 Where(&orm.CrossTransaction{ID: ormTx.ID}).
385 UpdateColumn(&orm.CrossTransaction{
386 Status: common.CrossTxSubmittedStatus,
387 }).Error; err != nil {
391 for _, remote := range w.remotes {
392 remote.NotifySubmission(ormTx)