public BlockchainEventFilterParams(BlockchainEvent eventType, UInt256[] txHashes)
{
EventType = eventType;
// sorting the tx hashes for further optimization
Array.Sort(txHashes, (x, y) => UInt256Utils.Compare(x, y));
PendingTransactionList = new List <UInt256>(txHashes.ToList());
PollingTime = TimeUtils.CurrentTimeMillis();
}
public JArray SyncPendingTransaction(ulong id, BlockchainEventFilterParams filter, bool poll)
{
var results = new JArray();
var pendingTx = filter.PendingTransactionList;
var poolTx = _transactionPool.Transactions.Keys.ToArray();
Array.Sort(poolTx, (x, y) => UInt256Utils.Compare(x, y));
// comparing two sorted list listA and listB in O(listA.Count + listB.Count)
int iter = 0;
foreach (var txHash in poolTx)
{
if (txHash is null)
{
continue;
}
while (iter < pendingTx.Count && UInt256Utils.Compare(txHash, pendingTx[iter]) > 0)
{
iter++;
}
if (iter == pendingTx.Count || UInt256Utils.Compare(txHash, pendingTx[iter]) < 0)
{
results.Add(Web3DataFormatUtils.Web3Data(txHash));
}
}
if (poll)
{
// Pending transaction list in filter must be sorted for further optimization
filter.PendingTransactionList = new List <UInt256>(poolTx.ToList());
filter.PollingTime = TimeUtils.CurrentTimeMillis();
_filters[id] = filter;
}
return(results);
}
