toolbar/federation/synchron/sidechain_keeper.go

   1 package synchron
   2
   3 import (
   4         "database/sql"
   5         "encoding/hex"
   6         "fmt"
   7         "time"
   8
   9         "github.com/jinzhu/gorm"
  10         log "github.com/sirupsen/logrus"
  11
  12         "github.com/vapor/consensus"
  13         "github.com/vapor/errors"
  14         "github.com/vapor/protocol/bc"
  15         "github.com/vapor/protocol/bc/types"
  16         "github.com/vapor/toolbar/federation/common"
  17         "github.com/vapor/toolbar/federation/config"
  18         "github.com/vapor/toolbar/federation/database"
  19         "github.com/vapor/toolbar/federation/database/orm"
  20         "github.com/vapor/toolbar/federation/service"
  21 )
  22
  23 type sidechainKeeper struct {
  24         cfg        *config.Chain
  25         db         *gorm.DB
  26         node       *service.Node
  27         assetStore *database.AssetStore
  28         chainID    uint64
  29         netParams  consensus.Params
  30 }
  31
  32 func NewSidechainKeeper(db *gorm.DB, assetStore *database.AssetStore, cfg *config.Config) *sidechainKeeper {
  33         chain := &orm.Chain{Name: common.VaporChainName}
  34         if err := db.Where(chain).First(chain).Error; err != nil {
  35                 log.WithField("err", err).Fatal("fail on get chain info")
  36         }
  37
  38         return &sidechainKeeper{
  39                 cfg:        &cfg.Sidechain,
  40                 db:         db,
  41                 node:       service.NewNode(cfg.Sidechain.Upstream),
  42                 assetStore: assetStore,
  43                 chainID:    chain.ID,
  44                 netParams:  consensus.NetParams[cfg.Network],
  45         }
  46 }
  47
  48 func (s *sidechainKeeper) Run() {
  49         ticker := time.NewTicker(time.Duration(s.cfg.SyncSeconds) * time.Second)
  50         for ; true; <-ticker.C {
  51                 for {
  52                         isUpdate, err := s.syncBlock()
  53                         if err != nil {
  54                                 log.WithField("error", err).Errorln("blockKeeper fail on process block")
  55                                 break
  56                         }
  57
  58                         if !isUpdate {
  59                                 break
  60                         }
  61                 }
  62         }
  63 }
  64
  65 func (s *sidechainKeeper) createCrossChainReqs(db *gorm.DB, crossTransactionID uint64, tx *types.Tx, statusFail bool) error {
  66         fromAddress := common.ProgToAddress(tx.Inputs[0].ControlProgram(), &s.netParams)
  67         for i, rawOutput := range tx.Outputs {
  68                 if rawOutput.OutputType() != types.CrossChainOutputType {
  69                         continue
  70                 }
  71
  72                 if statusFail && *rawOutput.OutputCommitment().AssetAmount.AssetId != *consensus.BTMAssetID {
  73                         continue
  74                 }
  75
  76                 asset, err := s.assetStore.GetByAssetID(rawOutput.OutputCommitment().AssetAmount.AssetId.String())
  77                 if err != nil {
  78                         return err
  79                 }
  80
  81                 prog := rawOutput.ControlProgram()
  82                 req := &orm.CrossTransactionReq{
  83                         CrossTransactionID: crossTransactionID,
  84                         SourcePos:          uint64(i),
  85                         AssetID:            asset.ID,
  86                         AssetAmount:        rawOutput.OutputCommitment().AssetAmount.Amount,
  87                         Script:             hex.EncodeToString(prog),
  88                         FromAddress:        fromAddress,
  89                         ToAddress:          common.ProgToAddress(prog, consensus.BytomMainNetParams(&s.netParams)),
  90                 }
  91
  92                 if err := db.Create(req).Error; err != nil {
  93                         return err
  94                 }
  95         }
  96         return nil
  97 }
  98
  99 func (s *sidechainKeeper) isDepositTx(tx *types.Tx) bool {
 100         for _, input := range tx.Inputs {
 101                 if input.InputType() == types.CrossChainInputType {
 102                         return true
 103                 }
 104         }
 105         return false
 106 }
 107
 108 func (s *sidechainKeeper) isWithdrawalTx(tx *types.Tx) bool {
 109         for _, output := range tx.Outputs {
 110                 if output.OutputType() == types.CrossChainOutputType {
 111                         return true
 112                 }
 113         }
 114         return false
 115 }
 116
 117 func (s *sidechainKeeper) processBlock(db *gorm.DB, block *types.Block, txStatus *bc.TransactionStatus) error {
 118         for i, tx := range block.Transactions {
 119                 if s.isDepositTx(tx) {
 120                         if err := s.processDepositTx(db, block, i); err != nil {
 121                                 return err
 122                         }
 123                 }
 124
 125                 if s.isWithdrawalTx(tx) {
 126                         if err := s.processWithdrawalTx(db, block, txStatus, i); err != nil {
 127                                 return err
 128                         }
 129                 }
 130         }
 131         return nil
 132 }
 133
 134 func (s *sidechainKeeper) processChainInfo(db *gorm.DB, block *types.Block) error {
 135         blockHash := block.Hash()
 136         res := db.Model(&orm.Chain{}).Where("block_hash = ?", block.PreviousBlockHash.String()).Updates(&orm.Chain{
 137                 BlockHash:   blockHash.String(),
 138                 BlockHeight: block.Height,
 139         })
 140         if err := res.Error; err != nil {
 141                 return err
 142         }
 143
 144         if res.RowsAffected != 1 {
 145                 return ErrInconsistentDB
 146         }
 147
 148         return nil
 149 }
 150
 151 func (s *sidechainKeeper) processDepositTx(db *gorm.DB, block *types.Block, txIndex int) error {
 152         tx := block.Transactions[txIndex]
 153         sourceTxHash, err := s.locateMainChainTx(tx.Inputs[0])
 154         if err != nil {
 155                 return err
 156         }
 157
 158         blockHash := block.Hash()
 159         stmt := db.Model(&orm.CrossTransaction{}).Where(&orm.CrossTransaction{
 160                 SourceTxHash: sourceTxHash,
 161                 Status:       common.CrossTxPendingStatus,
 162         }).UpdateColumn(&orm.CrossTransaction{
 163                 DestBlockHeight:    sql.NullInt64{int64(block.Height), true},
 164                 DestBlockTimestamp: sql.NullInt64{int64(block.Timestamp / 1000), true},
 165                 DestBlockHash:      sql.NullString{blockHash.String(), true},
 166                 DestTxIndex:        sql.NullInt64{int64(txIndex), true},
 167                 DestTxHash:         sql.NullString{tx.ID.String(), true},
 168                 Status:             common.CrossTxCompletedStatus,
 169         })
 170         if stmt.Error != nil {
 171                 return stmt.Error
 172         }
 173
 174         if stmt.RowsAffected != 1 {
 175                 return errors.Wrap(ErrInconsistentDB, "fail on find deposit data on database")
 176         }
 177         return nil
 178 }
 179
 180 func (s *sidechainKeeper) processWithdrawalTx(db *gorm.DB, block *types.Block, txStatus *bc.TransactionStatus, txIndex int) error {
 181         tx := block.Transactions[txIndex]
 182         var muxID bc.Hash
 183         switch res := tx.Entries[*tx.ResultIds[0]].(type) {
 184         case *bc.CrossChainOutput:
 185                 muxID = *res.Source.Ref
 186         case *bc.IntraChainOutput:
 187                 muxID = *res.Source.Ref
 188         case *bc.VoteOutput:
 189                 muxID = *res.Source.Ref
 190         case *bc.Retirement:
 191                 muxID = *res.Source.Ref
 192         default:
 193                 return ErrOutputType
 194         }
 195
 196         rawTx, err := tx.MarshalText()
 197         if err != nil {
 198                 return err
 199         }
 200
 201         blockHash := block.Hash()
 202         ormTx := &orm.CrossTransaction{
 203                 ChainID:              s.chainID,
 204                 SourceBlockHeight:    block.Height,
 205                 SourceBlockTimestamp: block.Timestamp / 1000,
 206                 SourceBlockHash:      blockHash.String(),
 207                 SourceTxIndex:        uint64(txIndex),
 208                 SourceMuxID:          muxID.String(),
 209                 SourceTxHash:         tx.ID.String(),
 210                 SourceRawTransaction: string(rawTx),
 211                 DestBlockHeight:      sql.NullInt64{Valid: false},
 212                 DestBlockTimestamp:   sql.NullInt64{Valid: false},
 213                 DestBlockHash:        sql.NullString{Valid: false},
 214                 DestTxIndex:          sql.NullInt64{Valid: false},
 215                 DestTxHash:           sql.NullString{Valid: false},
 216                 Status:               common.CrossTxPendingStatus,
 217         }
 218         if err := db.Create(ormTx).Error; err != nil {
 219                 return errors.Wrap(err, fmt.Sprintf("create sidechain WithdrawalTx %s", tx.ID.String()))
 220         }
 221
 222         return s.createCrossChainReqs(db, ormTx.ID, tx, txStatus.VerifyStatus[txIndex].StatusFail)
 223 }
 224
 225 func (s *sidechainKeeper) locateMainChainTx(input *types.TxInput) (string, error) {
 226         if input.InputType() != types.CrossChainInputType {
 227                 return "", errors.New("found weird crossChain tx")
 228         }
 229
 230         crossIn := input.TypedInput.(*types.CrossChainInput)
 231         crossTx := &orm.CrossTransaction{SourceMuxID: crossIn.SpendCommitment.SourceID.String()}
 232         if err := s.db.Where(crossTx).First(crossTx).Error; err != nil {
 233                 return "", errors.Wrap(err, "fail on find CrossTransaction")
 234         }
 235         return crossTx.SourceTxHash, nil
 236 }
 237
 238 func (s *sidechainKeeper) syncBlock() (bool, error) {
 239         chain := &orm.Chain{ID: s.chainID}
 240         if err := s.db.First(chain).Error; err != nil {
 241                 return false, errors.Wrap(err, "query chain")
 242         }
 243
 244         height, err := s.node.GetBlockCount()
 245         if err != nil {
 246                 return false, err
 247         }
 248
 249         if height <= chain.BlockHeight+s.cfg.Confirmations {
 250                 return false, nil
 251         }
 252
 253         nextBlockStr, txStatus, err := s.node.GetBlockByHeight(chain.BlockHeight + 1)
 254         if err != nil {
 255                 return false, err
 256         }
 257
 258         nextBlock := &types.Block{}
 259         if err := nextBlock.UnmarshalText([]byte(nextBlockStr)); err != nil {
 260                 return false, errors.New("Unmarshal nextBlock")
 261         }
 262
 263         if nextBlock.PreviousBlockHash.String() != chain.BlockHash {
 264                 log.WithFields(log.Fields{
 265                         "remote previous_block_Hash": nextBlock.PreviousBlockHash.String(),
 266                         "db block_hash":              chain.BlockHash,
 267                 }).Fatal("fail on block hash mismatch")
 268         }
 269
 270         if err := s.tryAttachBlock(nextBlock, txStatus); err != nil {
 271                 return false, err
 272         }
 273
 274         return true, nil
 275 }
 276
 277 func (s *sidechainKeeper) tryAttachBlock(block *types.Block, txStatus *bc.TransactionStatus) error {
 278         blockHash := block.Hash()
 279         log.WithFields(log.Fields{"block_height": block.Height, "block_hash": blockHash.String()}).Info("start to attachBlock")
 280
 281         dbTx := s.db.Begin()
 282         if err := s.processBlock(dbTx, block, txStatus); err != nil {
 283                 dbTx.Rollback()
 284                 return err
 285         }
 286
 287         if err := s.processChainInfo(dbTx, block); err != nil {
 288                 dbTx.Rollback()
 289                 return err
 290         }
 291         return dbTx.Commit().Error
 292 }