package synchron
import (
+ "bytes"
+ "database/sql"
+ "encoding/hex"
+ "fmt"
+ "time"
+
+ btmConsensus "github.com/bytom/consensus"
+ btmBc "github.com/bytom/protocol/bc"
+ "github.com/bytom/protocol/bc/types"
"github.com/jinzhu/gorm"
+ log "github.com/sirupsen/logrus"
+ vaporConsensus "github.com/vapor/consensus"
+ "github.com/vapor/consensus/segwit"
+ "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/federation/util"
+ "github.com/vapor/protocol/bc"
+ "github.com/vapor/wallet"
)
type mainchainKeeper struct {
- cfg *config.Chain
- db *gorm.DB
- node *service.Node
- chainName string
+ cfg *config.Chain
+ db *gorm.DB
+ node *service.Node
+ chainName string
+ assetStore *database.AssetStore
+ fedProg []byte
}
-func NewMainchainKeeper(db *gorm.DB, chainCfg *config.Chain) *mainchainKeeper {
+func NewMainchainKeeper(db *gorm.DB, assetStore *database.AssetStore, cfg *config.Config) *mainchainKeeper {
return &mainchainKeeper{
- cfg: chainCfg,
- db: db,
- node: service.NewNode(chainCfg.Upstream),
- chainName: chainCfg.Name,
+ cfg: &cfg.Mainchain,
+ db: db,
+ node: service.NewNode(cfg.Mainchain.Upstream),
+ chainName: cfg.Mainchain.Name,
+ assetStore: assetStore,
+ fedProg: util.ParseFedProg(cfg.Warders, cfg.Quorum),
+ }
+}
+
+func (m *mainchainKeeper) Run() {
+ ticker := time.NewTicker(time.Duration(m.cfg.SyncSeconds) * time.Second)
+ for ; true; <-ticker.C {
+ for {
+ isUpdate, err := m.syncBlock()
+ if err != nil {
+ log.WithField("error", err).Errorln("blockKeeper fail on process block")
+ break
+ }
+
+ if !isUpdate {
+ break
+ }
+ }
+ }
+}
+
+func (m *mainchainKeeper) syncBlock() (bool, error) {
+ chain := &orm.Chain{Name: m.chainName}
+ if err := m.db.Where(chain).First(chain).Error; err != nil {
+ return false, errors.Wrap(err, "query chain")
+ }
+
+ height, err := m.node.GetBlockCount()
+ if err != nil {
+ return false, err
+ }
+
+ if height <= chain.BlockHeight+m.cfg.Confirmations {
+ return false, nil
+ }
+
+ nextBlockStr, txStatus, err := m.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 PreviousBlockHash": nextBlock.PreviousBlockHash.String(),
+ "db block_hash": chain.BlockHash,
+ }).Fatal("BlockHash mismatch")
+ return false, ErrInconsistentDB
+ }
+
+ if err := m.tryAttachBlock(chain, nextBlock, txStatus); err != nil {
+ return false, err
+ }
+
+ return true, nil
+}
+
+func (m *mainchainKeeper) tryAttachBlock(chain *orm.Chain, 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 := m.db.Begin()
+ if err := m.processBlock(chain, block, txStatus); err != nil {
+ dbTx.Rollback()
+ return err
+ }
+
+ return dbTx.Commit().Error
+}
+
+func (m *mainchainKeeper) processBlock(chain *orm.Chain, block *types.Block, txStatus *bc.TransactionStatus) error {
+ if err := m.processIssuing(block.Transactions); err != nil {
+ return err
+ }
+
+ for i, tx := range block.Transactions {
+ if m.isDepositTx(tx) {
+ if err := m.processDepositTx(chain, block, txStatus, uint64(i), tx); err != nil {
+ return err
+ }
+ }
+
+ if m.isWithdrawalTx(tx) {
+ if err := m.processWithdrawalTx(chain, block, uint64(i), tx); err != nil {
+ return err
+ }
+ }
+ }
+
+ return m.processChainInfo(chain, block)
+}
+
+func (m *mainchainKeeper) isDepositTx(tx *types.Tx) bool {
+ for _, input := range tx.Inputs {
+ if bytes.Equal(input.ControlProgram(), m.fedProg) {
+ return false
+ }
+ }
+
+ for _, output := range tx.Outputs {
+ if bytes.Equal(output.OutputCommitment.ControlProgram, m.fedProg) {
+ return true
+ }
+ }
+
+ return false
+}
+
+func (m *mainchainKeeper) isWithdrawalTx(tx *types.Tx) bool {
+ for _, input := range tx.Inputs {
+ if bytes.Equal(input.ControlProgram(), m.fedProg) {
+ return true
+ }
+ }
+ return false
+}
+
+func (m *mainchainKeeper) processDepositTx(chain *orm.Chain, block *types.Block, txStatus *bc.TransactionStatus, txIndex uint64, tx *types.Tx) error {
+ blockHash := block.Hash()
+
+ var muxID btmBc.Hash
+ res0ID := tx.ResultIds[0]
+ switch res := tx.Entries[*res0ID].(type) {
+ case *btmBc.Output:
+ muxID = *res.Source.Ref
+ case *btmBc.Retirement:
+ muxID = *res.Source.Ref
+ default:
+ return ErrOutputType
+ }
+
+ rawTx, err := tx.MarshalText()
+ if err != nil {
+ return err
+ }
+
+ ormTx := &orm.CrossTransaction{
+ ChainID: chain.ID,
+ SourceBlockHeight: block.Height,
+ SourceBlockTimestamp: block.Timestamp,
+ SourceBlockHash: blockHash.String(),
+ SourceTxIndex: 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 := m.db.Create(ormTx).Error; err != nil {
+ return errors.Wrap(err, fmt.Sprintf("create mainchain DepositTx %s", tx.ID.String()))
+ }
+
+ statusFail := txStatus.VerifyStatus[txIndex].StatusFail
+ crossChainInputs, err := m.getCrossChainReqs(ormTx.ID, tx, statusFail)
+ if err != nil {
+ return err
+ }
+
+ for _, input := range crossChainInputs {
+ if err := m.db.Create(input).Error; err != nil {
+ return errors.Wrap(err, fmt.Sprintf("create DepositFromMainchain input: txid(%s), pos(%d)", tx.ID.String(), input.SourcePos))
+ }
+ }
+
+ return nil
}
-func (m *mainchainKeeper) Run() {}
+func (m *mainchainKeeper) getCrossChainReqs(crossTransactionID uint64, tx *types.Tx, statusFail bool) ([]*orm.CrossTransactionReq, error) {
+ var fromAddress, toAddress string
+ // assume inputs are from an identical owner
+ prog := tx.Inputs[0].ControlProgram()
+ script := hex.EncodeToString(prog)
+ switch {
+ case segwit.IsP2WPKHScript(prog):
+ if pubHash, err := segwit.GetHashFromStandardProg(prog); err == nil {
+ fromAddress = wallet.BuildP2PKHAddress(pubHash, &vaporConsensus.MainNetParams)
+ toAddress = wallet.BuildP2PKHAddress(pubHash, &vaporConsensus.VaporNetParams)
+ }
+ case segwit.IsP2WSHScript(prog):
+ if scriptHash, err := segwit.GetHashFromStandardProg(prog); err == nil {
+ fromAddress = wallet.BuildP2SHAddress(scriptHash, &vaporConsensus.MainNetParams)
+ toAddress = wallet.BuildP2SHAddress(scriptHash, &vaporConsensus.VaporNetParams)
+ }
+ }
+
+ reqs := []*orm.CrossTransactionReq{}
+ for i, rawOutput := range tx.Outputs {
+ // check valid deposit
+ if !bytes.Equal(rawOutput.OutputCommitment.ControlProgram, m.fedProg) {
+ continue
+ }
+
+ if statusFail && *rawOutput.OutputCommitment.AssetAmount.AssetId != *btmConsensus.BTMAssetID {
+ continue
+ }
+
+ asset, err := m.assetStore.GetByAssetID(rawOutput.OutputCommitment.AssetAmount.AssetId.String())
+ if err != nil {
+ return nil, err
+ }
+
+ req := &orm.CrossTransactionReq{
+ CrossTransactionID: crossTransactionID,
+ SourcePos: uint64(i),
+ AssetID: asset.ID,
+ AssetAmount: rawOutput.OutputCommitment.AssetAmount.Amount,
+ Script: script,
+ FromAddress: fromAddress,
+ ToAddress: toAddress,
+ }
+ reqs = append(reqs, req)
+ }
+ return reqs, nil
+}
+
+func (m *mainchainKeeper) processWithdrawalTx(chain *orm.Chain, block *types.Block, txIndex uint64, tx *types.Tx) error {
+ blockHash := block.Hash()
+ stmt := m.db.Model(&orm.CrossTransaction{}).Where("chain_id != ?", chain.ID).
+ Where(&orm.CrossTransaction{
+ DestTxHash: sql.NullString{tx.ID.String(), true},
+ Status: common.CrossTxPendingStatus,
+ }).UpdateColumn(&orm.CrossTransaction{
+ DestBlockHeight: sql.NullInt64{int64(block.Height), true},
+ DestBlockTimestamp: sql.NullInt64{int64(block.Timestamp), true},
+ DestBlockHash: sql.NullString{blockHash.String(), true},
+ DestTxIndex: sql.NullInt64{int64(txIndex), true},
+ Status: common.CrossTxCompletedStatus,
+ })
+ if stmt.Error != nil {
+ return stmt.Error
+ }
+
+ if stmt.RowsAffected != 1 {
+ log.Warnf("mainchainKeeper.processWithdrawalTx(%v): rows affected != 1", tx.ID.String())
+ }
+ return nil
+}
+
+func (m *mainchainKeeper) processChainInfo(chain *orm.Chain, block *types.Block) error {
+ blockHash := block.Hash()
+ chain.BlockHash = blockHash.String()
+ chain.BlockHeight = block.Height
+ res := m.db.Model(chain).Where("block_hash = ?", block.PreviousBlockHash.String()).Updates(chain)
+ if err := res.Error; err != nil {
+ return err
+ }
+
+ if res.RowsAffected != 1 {
+ return ErrInconsistentDB
+ }
+
+ return nil
+}
+
+func (m *mainchainKeeper) processIssuing(txs []*types.Tx) error {
+ for _, tx := range txs {
+ for _, input := range tx.Inputs {
+ switch inp := input.TypedInput.(type) {
+ case *types.IssuanceInput:
+ assetID := inp.AssetID()
+ if _, err := m.assetStore.GetByAssetID(assetID.String()); err == nil {
+ continue
+ }
+
+ m.assetStore.Add(&orm.Asset{
+ AssetID: assetID.String(),
+ IssuanceProgram: hex.EncodeToString(inp.IssuanceProgram),
+ VMVersion: inp.VMVersion,
+ Definition: string(inp.AssetDefinition),
+ })
+ }
+ }
+ }
+
+ return nil
+}
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