// dbFetchTx looks up the passed transaction hash in the transaction index and
// loads it from the database.
func dbFetchTx(dbTx database.Tx, hash chainhash.Hash) (*wire.MsgTx, error) {
// Look up the location of the transaction.
blockRegion, err := dbFetchTxIndexEntry(dbTx, hash)
if err != nil {
return nil, err
}
if blockRegion == nil {
return nil, fmt.Errorf("transaction %v not found in the txindex", hash)
}
// Load the raw transaction bytes from the database.
txBytes, err := dbTx.FetchBlockRegion(blockRegion)
if err != nil {
return nil, err
}
// Deserialize the transaction.
var msgTx wire.MsgTx
err = msgTx.Deserialize(bytes.NewReader(txBytes))
if err != nil {
return nil, err
}
return &msgTx, nil
}