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Compute txindex metadata for mempool #659

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Compute txindex metadata for mempool #659

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27 changes: 26 additions & 1 deletion routes/exchange.go
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Original file line number Diff line number Diff line change
Expand Up @@ -985,10 +985,35 @@ func (fes *APIServer) APITransactionInfo(ww http.ResponseWriter, rr *http.Reques
if transactionInfoRequest.IsMempool {
// Get all the txns from the mempool.
poolTxns := fes.backendServer.GetMempool().GetOrderedTransactions()

uncommittedTipView, err := fes.backendServer.GetBlockchain().GetUncommittedTipView()
if err != nil {
APIAddError(ww, fmt.Sprintf("APITransactionInfo: Problem fetching uncommittedTipView: %v", err))
return
}
uncommittedTipHeight := fes.backendServer.GetBlockchain().BlockTip().Height
safeUncommittedTipUtxoView := lib.NewSafeUtxoView(uncommittedTipView)
currentTimestamp := time.Now().UnixNano()
res := &APITransactionInfoResponse{}
res.Transactions = []*TransactionResponse{}
for _, poolTx := range poolTxns {
if fes.Params.IsPoSBlockHeight(uint64(uncommittedTipHeight + 1)) {
// Skip transactions that are not validated yet.
if !poolTx.IsValidated() {
continue
}
totalNanosPurchasedBefore := safeUncommittedTipUtxoView.GetUtxoView().NanosPurchased
usdCentsPerBitcoinBefore := safeUncommittedTipUtxoView.GetUtxoView().GetCurrentUSDCentsPerBitcoin()
utxoOps, totalInput, totalOutput, txFee, err := safeUncommittedTipUtxoView.ConnectTransaction(
poolTx.Tx, poolTx.Hash, uncommittedTipHeight+1, currentTimestamp, false /*verifySignatures*/, false)
if err != nil {
APIAddError(ww, fmt.Sprintf("APITransactionInfo: Problem connecting transaction: %v", err))
return
}
txindexMetadata := lib.ComputeTransactionMetadata(
poolTx.Tx, safeUncommittedTipUtxoView.GetUtxoView(), nil, totalNanosPurchasedBefore,
usdCentsPerBitcoinBefore, totalInput, totalOutput, txFee, uint64(0), utxoOps, uint64(uncommittedTipHeight+1))
poolTx.TxMeta = txindexMetadata
}
// If we haven't seen the last transaction of the previous page, skip ahead until we find it.
if !lastTxSeen {
if reflect.DeepEqual(poolTx.Hash, lastTxHash) {
Expand Down