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unconfirmed.go
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unconfirmed.go
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package wallet
import (
"encoding/json"
"fmt"
"sort"
"time"
log "github.com/sirupsen/logrus"
"github.com/hyper-fi/bytom/account"
"github.com/hyper-fi/bytom/blockchain/query"
"github.com/hyper-fi/bytom/crypto/sha3pool"
"github.com/hyper-fi/bytom/protocol"
"github.com/hyper-fi/bytom/protocol/bc/types"
)
const (
//UnconfirmedTxPrefix is txpool unconfirmed transactions prefix
UnconfirmedTxPrefix = "UTXS:"
UnconfirmedTxCheckPeriod = 30 * time.Minute
MaxUnconfirmedTxDuration = 24 * time.Hour
)
func calcUnconfirmedTxKey(formatKey string) []byte {
return []byte(UnconfirmedTxPrefix + formatKey)
}
// SortByTimestamp implements sort.Interface for AnnotatedTx slices
type SortByTimestamp []*query.AnnotatedTx
func (a SortByTimestamp) Len() int { return len(a) }
func (a SortByTimestamp) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a SortByTimestamp) Less(i, j int) bool { return a[i].Timestamp > a[j].Timestamp }
// AddUnconfirmedTx handle wallet status update when tx add into txpool
func (w *Wallet) AddUnconfirmedTx(txD *protocol.TxDesc) {
if err := w.saveUnconfirmedTx(txD.Tx); err != nil {
log.WithFields(log.Fields{"module": logModule, "err": err}).Error("wallet fail on saveUnconfirmedTx")
}
utxos := txOutToUtxos(txD.Tx, 0)
utxos = w.filterAccountUtxo(utxos)
w.AccountMgr.AddUnconfirmedUtxo(utxos)
}
// GetUnconfirmedTxs get account unconfirmed transactions, filter transactions by accountID when accountID is not empty
func (w *Wallet) GetUnconfirmedTxs(accountID string) ([]*query.AnnotatedTx, error) {
annotatedTxs := []*query.AnnotatedTx{}
txIter := w.DB.IteratorPrefix([]byte(UnconfirmedTxPrefix))
defer txIter.Release()
for txIter.Next() {
annotatedTx := &query.AnnotatedTx{}
if err := json.Unmarshal(txIter.Value(), &annotatedTx); err != nil {
return nil, err
}
if accountID == "" || findTransactionsByAccount(annotatedTx, accountID) {
annotateTxsAsset(w, []*query.AnnotatedTx{annotatedTx})
annotatedTxs = append([]*query.AnnotatedTx{annotatedTx}, annotatedTxs...)
}
}
sort.Sort(SortByTimestamp(annotatedTxs))
return annotatedTxs, nil
}
// GetUnconfirmedTxByTxID get unconfirmed transaction by txID
func (w *Wallet) GetUnconfirmedTxByTxID(txID string) (*query.AnnotatedTx, error) {
annotatedTx := &query.AnnotatedTx{}
txInfo := w.DB.Get(calcUnconfirmedTxKey(txID))
if txInfo == nil {
return nil, fmt.Errorf("No transaction(tx_id=%s) from txpool", txID)
}
if err := json.Unmarshal(txInfo, annotatedTx); err != nil {
return nil, err
}
annotateTxsAsset(w, []*query.AnnotatedTx{annotatedTx})
return annotatedTx, nil
}
// RemoveUnconfirmedTx handle wallet status update when tx removed from txpool
func (w *Wallet) RemoveUnconfirmedTx(txD *protocol.TxDesc) {
if !w.checkRelatedTransaction(txD.Tx) {
return
}
w.DB.Delete(calcUnconfirmedTxKey(txD.Tx.ID.String()))
w.AccountMgr.RemoveUnconfirmedUtxo(txD.Tx.ResultIds)
}
func (w *Wallet) buildAnnotatedUnconfirmedTx(tx *types.Tx) *query.AnnotatedTx {
annotatedTx := &query.AnnotatedTx{
ID: tx.ID,
Timestamp: uint64(time.Now().Unix()),
Inputs: make([]*query.AnnotatedInput, 0, len(tx.Inputs)),
Outputs: make([]*query.AnnotatedOutput, 0, len(tx.Outputs)),
Size: tx.SerializedSize,
}
for i := range tx.Inputs {
annotatedTx.Inputs = append(annotatedTx.Inputs, w.BuildAnnotatedInput(tx, uint32(i)))
}
for i := range tx.Outputs {
annotatedTx.Outputs = append(annotatedTx.Outputs, w.BuildAnnotatedOutput(tx, i))
}
return annotatedTx
}
// checkRelatedTransaction check related unconfirmed transaction.
func (w *Wallet) checkRelatedTransaction(tx *types.Tx) bool {
for _, v := range tx.Outputs {
var hash [32]byte
sha3pool.Sum256(hash[:], v.ControlProgram)
if bytes := w.DB.Get(account.ContractKey(hash)); bytes != nil {
return true
}
}
for _, v := range tx.Inputs {
outid, err := v.SpentOutputID()
if err != nil {
continue
}
if bytes := w.DB.Get(account.StandardUTXOKey(outid)); bytes != nil {
return true
}
}
return false
}
// SaveUnconfirmedTx save unconfirmed annotated transaction to the database
func (w *Wallet) saveUnconfirmedTx(tx *types.Tx) error {
if !w.checkRelatedTransaction(tx) {
return nil
}
// annotate account and asset
annotatedTx := w.buildAnnotatedUnconfirmedTx(tx)
annotatedTxs := []*query.AnnotatedTx{}
annotatedTxs = append(annotatedTxs, annotatedTx)
annotateTxsAccount(annotatedTxs, w.DB)
rawTx, err := json.Marshal(annotatedTxs[0])
if err != nil {
return err
}
w.DB.Set(calcUnconfirmedTxKey(tx.ID.String()), rawTx)
return nil
}
func (w *Wallet) delExpiredTxs() error {
AnnotatedTx, err := w.GetUnconfirmedTxs("")
if err != nil {
return err
}
for _, tx := range AnnotatedTx {
if time.Now().After(time.Unix(int64(tx.Timestamp), 0).Add(MaxUnconfirmedTxDuration)) {
w.DB.Delete(calcUnconfirmedTxKey(tx.ID.String()))
}
}
return nil
}
//delUnconfirmedTx periodically delete locally stored timeout did not confirm txs
func (w *Wallet) delUnconfirmedTx() {
if err := w.delExpiredTxs(); err != nil {
log.WithFields(log.Fields{"module": logModule, "err": err}).Error("wallet fail on delUnconfirmedTx")
return
}
ticker := time.NewTicker(UnconfirmedTxCheckPeriod)
defer ticker.Stop()
for {
<-ticker.C
if err := w.delExpiredTxs(); err != nil {
log.WithFields(log.Fields{"module": logModule, "err": err}).Error("wallet fail on delUnconfirmedTx")
}
}
}