func AnchorRecordToDirBlockInfo(ar *anchor.AnchorRecord) (*dbInfo.DirBlockInfo, error) {
dbi := new(dbInfo.DirBlockInfo)
var err error
//TODO: fetch proper data
//dbi.DBHash =
dbi.DBHash, err = primitives.NewShaHashFromStr(ar.KeyMR)
if err != nil {
return nil, err
}
dbi.DBHeight = ar.DBHeight
//dbi.Timestamp =
dbi.BTCTxHash, err = primitives.NewShaHashFromStr(ar.Bitcoin.TXID)
if err != nil {
return nil, err
}
dbi.BTCTxOffset = ar.Bitcoin.Offset
dbi.BTCBlockHeight = ar.Bitcoin.BlockHeight
dbi.BTCBlockHash, err = primitives.NewShaHashFromStr(ar.Bitcoin.BlockHash)
if err != nil {
return nil, err
}
dbi.DBMerkleRoot, err = primitives.NewShaHashFromStr(ar.KeyMR)
if err != nil {
return nil, err
}
dbi.BTCConfirmed = true
return dbi, nil
}
func (a *Anchor) doSaveDirBlockInfo(transaction *btcutil.Tx, details *btcjson.BlockDetails, dirBlockInfo *dbInfo.DirBlockInfo, replace bool) {
if replace {
dirBlockInfo.BTCTxHash = toHash(transaction.Sha()) // in case of tx being malleated
}
dirBlockInfo.BTCTxOffset = int32(details.Index)
dirBlockInfo.BTCBlockHeight = details.Height
btcBlockHash, _ := wire.NewShaHashFromStr(details.Hash)
dirBlockInfo.BTCBlockHash = toHash(btcBlockHash)
dirBlockInfo.Timestamp = time.Now().Unix()
a.db.SaveDirBlockInfo(dirBlockInfo)
anchorLog.Infof("In doSaveDirBlockInfo, dirBlockInfo:%s saved to db\n", spew.Sdump(dirBlockInfo))
// to make factom / explorer more user friendly, instead of waiting for
// over 2 hours to know it's anchored, we can create the anchor chain instantly
// then change it when the btc main chain re-org happens.
a.saveToAnchorChain(dirBlockInfo)
}
func (a *Anchor) doTransaction(hash interfaces.IHash, blockHeight uint32, dirBlockInfo *dbInfo.DirBlockInfo) (*wire.ShaHash, error) {
b := a.balances[0]
a.balances = a.balances[1:]
anchorLog.Info("new balances.len=", len(a.balances))
msgtx, err := a.createRawTransaction(b, hash.Bytes(), blockHeight)
if err != nil {
return nil, fmt.Errorf("cannot create Raw Transaction: %s", err)
}
shaHash, err := a.sendRawTransaction(msgtx)
if err != nil {
return nil, fmt.Errorf("cannot send Raw Transaction: %s", err)
}
if dirBlockInfo != nil {
dirBlockInfo.BTCTxHash = toHash(shaHash)
dirBlockInfo.SetTimestamp(primitives.NewTimestampNow())
a.db.SaveDirBlockInfo(dirBlockInfo)
}
return shaHash, nil
}
func (a *Anchor) checkConfirmations(dirBlockInfo *dbInfo.DirBlockInfo, index int) error {
anchorLog.Debug("check Confirmations for btc tx: ", toShaHash(dirBlockInfo.GetBTCTxHash()).String())
txResult, err := a.wclient.GetTransaction(toShaHash(dirBlockInfo.GetBTCTxHash()))
if err != nil {
anchorLog.Debugf(err.Error())
return err
}
anchorLog.Debugf("GetTransactionResult: %s\n", spew.Sdump(txResult))
if txResult.Confirmations >= int64(a.confirmationsNeeded) {
btcBlockHash, _ := wire.NewShaHashFromStr(txResult.BlockHash)
var rewrite = false
// Either the call back is not recorded in case of BTCBlockHash is zero hash,
// or bad things like re-organization of btc main chain happened
if bytes.Compare(dirBlockInfo.BTCBlockHash.Bytes(), btcBlockHash.Bytes()) != 0 {
anchorLog.Debugf("BTCBlockHash changed: original BTCBlockHeight=%d, original BTCBlockHash=%s, original tx offset=%d\n", dirBlockInfo.BTCBlockHeight, toShaHash(dirBlockInfo.BTCBlockHash).String(), dirBlockInfo.BTCTxOffset)
dirBlockInfo.BTCBlockHash = toHash(btcBlockHash)
btcBlock, err := a.wclient.GetBlockVerbose(btcBlockHash, true)
if err != nil {
anchorLog.Debugf(err.Error())
}
if btcBlock.Height > 0 {
dirBlockInfo.BTCBlockHeight = int32(btcBlock.Height)
}
anchorLog.Debugf("BTCBlockHash changed: new BTCBlockHeight=%d, new BTCBlockHash=%s, btcBlockVerbose.Height=%d\n", dirBlockInfo.BTCBlockHeight, btcBlockHash.String(), btcBlock.Height)
rewrite = true
}
dirBlockInfo.BTCConfirmed = true // needs confirmationsNeeded (20) to be confirmed.
dirBlockInfo.SetTimestamp(primitives.NewTimestampNow())
a.db.SaveDirBlockInfo(dirBlockInfo)
a.dirBlockInfoSlice = append(a.dirBlockInfoSlice[:index], a.dirBlockInfoSlice[index+1:]...) //delete it
anchorLog.Debugf("Fully confirmed %d times. txid=%s, dirblockInfo=%s\n", txResult.Confirmations, txResult.TxID, spew.Sdump(dirBlockInfo))
if rewrite {
anchorLog.Debug("rewrite to anchor chain: ", spew.Sdump(dirBlockInfo))
a.saveToAnchorChain(dirBlockInfo)
}
}
return nil
}
func (a *Anchor) saveToAnchorChain(dirBlockInfo *dbInfo.DirBlockInfo) {
anchorLog.Debug("in saveToAnchorChain")
anchorRec := new(AnchorRecord)
anchorRec.AnchorRecordVer = 1
anchorRec.DBHeight = dirBlockInfo.GetDBHeight()
anchorRec.KeyMR = dirBlockInfo.GetDBMerkleRoot().String()
anchorRec.RecordHeight = uint32(a.state.GetDBHeight() + 1) // need the next block height
anchorRec.Bitcoin.Address = a.defaultAddress.String()
anchorRec.Bitcoin.TXID = dirBlockInfo.GetBTCTxHash().(*primitives.Hash).BTCString()
anchorRec.Bitcoin.BlockHeight = dirBlockInfo.BTCBlockHeight
anchorRec.Bitcoin.BlockHash = dirBlockInfo.BTCBlockHash.(*primitives.Hash).BTCString()
anchorRec.Bitcoin.Offset = dirBlockInfo.BTCTxOffset
anchorLog.Info("before submitting Entry To AnchorChain. anchor.record: " + spew.Sdump(anchorRec))
err := a.submitEntryToAnchorChain(anchorRec)
if err != nil {
anchorLog.Error("Error in writing anchor into anchor chain: ", err.Error())
}
}