package synchron
import (
+ "database/sql"
+ "encoding/hex"
+ "fmt"
+ "time"
+
"github.com/jinzhu/gorm"
+ log "github.com/sirupsen/logrus"
+ "github.com/vapor/consensus"
+ "github.com/vapor/errors"
+ "github.com/vapor/federation/common"
"github.com/vapor/federation/config"
+ "github.com/vapor/federation/database"
+ "github.com/vapor/federation/database/orm"
"github.com/vapor/federation/service"
+ "github.com/vapor/protocol/bc"
+ "github.com/vapor/protocol/bc/types"
)
type sidechainKeeper struct {
- cfg *config.Chain
- db *gorm.DB
- node *service.Node
- chainName string
+ cfg *config.Chain
+ db *gorm.DB
+ node *service.Node
+ assetStore *database.AssetStore
+ chainID uint64
}
-func NewSidechainKeeper(db *gorm.DB, chainCfg *config.Chain) *sidechainKeeper {
+func NewSidechainKeeper(db *gorm.DB, assetStore *database.AssetStore, cfg *config.Config) *sidechainKeeper {
+ chain := &orm.Chain{Name: common.VaporChainName}
+ if err := db.Where(chain).First(chain).Error; err != nil {
+ log.WithField("err", err).Fatal("fail on get chain info")
+ }
+
return &sidechainKeeper{
- cfg: chainCfg,
- db: db,
- node: service.NewNode(chainCfg.Upstream),
- chainName: chainCfg.Name,
+ cfg: &cfg.Sidechain,
+ db: db,
+ node: service.NewNode(cfg.Sidechain.Upstream),
+ assetStore: assetStore,
+ chainID: chain.ID,
+ }
+}
+
+func (s *sidechainKeeper) Run() {
+ ticker := time.NewTicker(time.Duration(s.cfg.SyncSeconds) * time.Second)
+ for ; true; <-ticker.C {
+ for {
+ isUpdate, err := s.syncBlock()
+ if err != nil {
+ log.WithField("error", err).Errorln("blockKeeper fail on process block")
+ break
+ }
+
+ if !isUpdate {
+ break
+ }
+ }
+ }
+}
+
+func (s *sidechainKeeper) createCrossChainReqs(db *gorm.DB, crossTransactionID uint64, tx *types.Tx, statusFail bool) error {
+ fromAddress := common.ProgToAddress(tx.Inputs[0].ControlProgram(), &consensus.MainNetParams)
+ for i, rawOutput := range tx.Outputs {
+ if rawOutput.OutputType() != types.CrossChainOutputType {
+ continue
+ }
+
+ if statusFail && *rawOutput.OutputCommitment().AssetAmount.AssetId != *consensus.BTMAssetID {
+ continue
+ }
+
+ asset, err := s.assetStore.GetByAssetID(rawOutput.OutputCommitment().AssetAmount.AssetId.String())
+ if err != nil {
+ return err
+ }
+
+ prog := rawOutput.ControlProgram()
+ req := &orm.CrossTransactionReq{
+ CrossTransactionID: crossTransactionID,
+ SourcePos: uint64(i),
+ AssetID: asset.ID,
+ AssetAmount: rawOutput.OutputCommitment().AssetAmount.Amount,
+ Script: hex.EncodeToString(prog),
+ FromAddress: fromAddress,
+ ToAddress: common.ProgToAddress(prog, &consensus.BytomMainNetParams),
+ }
+
+ if err := db.Create(req).Error; err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func (s *sidechainKeeper) isDepositTx(tx *types.Tx) bool {
+ for _, input := range tx.Inputs {
+ if input.InputType() == types.CrossChainInputType {
+ return true
+ }
+ }
+ return false
+}
+
+func (s *sidechainKeeper) isWithdrawalTx(tx *types.Tx) bool {
+ for _, output := range tx.Outputs {
+ if output.OutputType() == types.CrossChainOutputType {
+ return true
+ }
+ }
+ return false
+}
+
+func (s *sidechainKeeper) processBlock(db *gorm.DB, block *types.Block, txStatus *bc.TransactionStatus) error {
+ for i, tx := range block.Transactions {
+ if s.isDepositTx(tx) {
+ if err := s.processDepositTx(db, block, i); err != nil {
+ return err
+ }
+ }
+
+ if s.isWithdrawalTx(tx) {
+ if err := s.processWithdrawalTx(db, block, txStatus, i); err != nil {
+ return err
+ }
+ }
+ }
+ return nil
+}
+
+func (s *sidechainKeeper) processChainInfo(db *gorm.DB, block *types.Block) error {
+ blockHash := block.Hash()
+ res := db.Model(&orm.Chain{}).Where("block_hash = ?", block.PreviousBlockHash.String()).Updates(&orm.Chain{
+ BlockHash: blockHash.String(),
+ BlockHeight: block.Height,
+ })
+ if err := res.Error; err != nil {
+ return err
+ }
+
+ if res.RowsAffected != 1 {
+ return ErrInconsistentDB
+ }
+
+ return nil
+}
+
+func (s *sidechainKeeper) processDepositTx(db *gorm.DB, block *types.Block, txIndex int) error {
+ tx := block.Transactions[txIndex]
+ sourceTxHash, err := s.locateMainChainTx(tx.Inputs[0])
+ if err != nil {
+ return err
+ }
+
+ blockHash := block.Hash()
+ stmt := db.Model(&orm.CrossTransaction{}).Where(&orm.CrossTransaction{
+ SourceTxHash: sourceTxHash,
+ Status: common.CrossTxPendingStatus,
+ }).UpdateColumn(&orm.CrossTransaction{
+ DestBlockHeight: sql.NullInt64{int64(block.Height), true},
+ DestBlockTimestamp: sql.NullInt64{int64(block.Timestamp / 1000), true},
+ DestBlockHash: sql.NullString{blockHash.String(), true},
+ DestTxIndex: sql.NullInt64{int64(txIndex), true},
+ DestTxHash: sql.NullString{tx.ID.String(), true},
+ Status: common.CrossTxCompletedStatus,
+ })
+ if stmt.Error != nil {
+ return stmt.Error
+ }
+
+ if stmt.RowsAffected != 1 {
+ return errors.Wrap(ErrInconsistentDB, "fail on find deposit data on database")
+ }
+ return nil
+}
+
+func (s *sidechainKeeper) processWithdrawalTx(db *gorm.DB, block *types.Block, txStatus *bc.TransactionStatus, txIndex int) error {
+ tx := block.Transactions[txIndex]
+ var muxID bc.Hash
+ switch res := tx.Entries[*tx.ResultIds[0]].(type) {
+ case *bc.CrossChainOutput:
+ muxID = *res.Source.Ref
+ case *bc.IntraChainOutput:
+ muxID = *res.Source.Ref
+ case *bc.VoteOutput:
+ muxID = *res.Source.Ref
+ case *bc.Retirement:
+ muxID = *res.Source.Ref
+ default:
+ return ErrOutputType
+ }
+
+ rawTx, err := tx.MarshalText()
+ if err != nil {
+ return err
+ }
+
+ blockHash := block.Hash()
+ ormTx := &orm.CrossTransaction{
+ ChainID: s.chainID,
+ SourceBlockHeight: block.Height,
+ SourceBlockTimestamp: block.Timestamp / 1000,
+ SourceBlockHash: blockHash.String(),
+ SourceTxIndex: uint64(txIndex),
+ SourceMuxID: muxID.String(),
+ SourceTxHash: tx.ID.String(),
+ SourceRawTransaction: string(rawTx),
+ DestBlockHeight: sql.NullInt64{Valid: false},
+ DestBlockTimestamp: sql.NullInt64{Valid: false},
+ DestBlockHash: sql.NullString{Valid: false},
+ DestTxIndex: sql.NullInt64{Valid: false},
+ DestTxHash: sql.NullString{Valid: false},
+ Status: common.CrossTxPendingStatus,
+ }
+ if err := db.Create(ormTx).Error; err != nil {
+ return errors.Wrap(err, fmt.Sprintf("create sidechain WithdrawalTx %s", tx.ID.String()))
+ }
+
+ return s.createCrossChainReqs(db, ormTx.ID, tx, txStatus.VerifyStatus[txIndex].StatusFail)
+}
+
+func (s *sidechainKeeper) locateMainChainTx(input *types.TxInput) (string, error) {
+ if input.InputType() != types.CrossChainInputType {
+ return "", errors.New("found weird crossChain tx")
+ }
+
+ crossIn := input.TypedInput.(*types.CrossChainInput)
+ crossTx := &orm.CrossTransaction{SourceMuxID: crossIn.SpendCommitment.SourceID.String()}
+ if err := s.db.Where(crossTx).First(crossTx).Error; err != nil {
+ return "", errors.Wrap(err, "fail on find CrossTransaction")
+ }
+ return crossTx.SourceTxHash, nil
+}
+
+func (s *sidechainKeeper) syncBlock() (bool, error) {
+ chain := &orm.Chain{ID: s.chainID}
+ if err := s.db.First(chain).Error; err != nil {
+ return false, errors.Wrap(err, "query chain")
}
+
+ height, err := s.node.GetBlockCount()
+ if err != nil {
+ return false, err
+ }
+
+ if height <= chain.BlockHeight+s.cfg.Confirmations {
+ return false, nil
+ }
+
+ nextBlockStr, txStatus, err := s.node.GetBlockByHeight(chain.BlockHeight + 1)
+ if err != nil {
+ return false, err
+ }
+
+ nextBlock := &types.Block{}
+ if err := nextBlock.UnmarshalText([]byte(nextBlockStr)); err != nil {
+ return false, errors.New("Unmarshal nextBlock")
+ }
+
+ if nextBlock.PreviousBlockHash.String() != chain.BlockHash {
+ log.WithFields(log.Fields{
+ "remote previous_block_Hash": nextBlock.PreviousBlockHash.String(),
+ "db block_hash": chain.BlockHash,
+ }).Fatal("fail on block hash mismatch")
+ }
+
+ if err := s.tryAttachBlock(nextBlock, txStatus); err != nil {
+ return false, err
+ }
+
+ return true, nil
}
-func (s *sidechainKeeper) Run() {}
+func (s *sidechainKeeper) tryAttachBlock(block *types.Block, txStatus *bc.TransactionStatus) error {
+ blockHash := block.Hash()
+ log.WithFields(log.Fields{"block_height": block.Height, "block_hash": blockHash.String()}).Info("start to attachBlock")
+
+ dbTx := s.db.Begin()
+ if err := s.processBlock(dbTx, block, txStatus); err != nil {
+ dbTx.Rollback()
+ return err
+ }
+
+ if err := s.processChainInfo(dbTx, block); err != nil {
+ dbTx.Rollback()
+ return err
+ }
+ return dbTx.Commit().Error
+}
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