public async Task <GetTransactionsResponse> GetTransactions(
string cryptoCode,
[ModelBinder(BinderType = typeof(DestinationModelBinder))]
DerivationStrategyBase extPubKey,
[ModelBinder(BinderType = typeof(BookmarksModelBinding))]
HashSet <Bookmark> unconfirmedBookmarks = null,
[ModelBinder(BinderType = typeof(BookmarksModelBinding))]
HashSet <Bookmark> confirmedBookmarks = null,
[ModelBinder(BinderType = typeof(BookmarksModelBinding))]
HashSet <Bookmark> replacedBookmarks = null,
bool includeTransaction = true,
bool longPolling = false)
{
if (extPubKey == null)
{
throw new ArgumentNullException(nameof(extPubKey));
}
var network = GetNetwork(cryptoCode);
var chain = ChainProvider.GetChain(network);
var repo = RepositoryProvider.GetRepository(network);
var waitingTransaction = longPolling ? WaitingTransaction(extPubKey) : Task.FromResult(false);
GetTransactionsResponse response = null;
while (true)
{
response = new GetTransactionsResponse();
int currentHeight = chain.Height;
response.Height = currentHeight;
var txs = GetAnnotatedTransactions(repo, chain, extPubKey);
foreach (var item in new[]
{
new
{
TxSet = response.ConfirmedTransactions,
KnownBookmarks = confirmedBookmarks ?? new HashSet <Bookmark>(),
AnnotatedTx = txs.ConfirmedTransactions
},
new
{
TxSet = response.UnconfirmedTransactions,
KnownBookmarks = unconfirmedBookmarks ?? new HashSet <Bookmark>(),
AnnotatedTx = txs.UnconfirmedTransactions
},
new
{
TxSet = response.ReplacedTransactions,
KnownBookmarks = replacedBookmarks ?? new HashSet <Bookmark>(),
AnnotatedTx = txs.ReplacedTransactions
},
})
{
item.TxSet.Bookmark = Bookmark.Start;
item.TxSet.KnownBookmark = item.KnownBookmarks.Contains(Bookmark.Start) ? Bookmark.Start : null;
BookmarkProcessor processor = new BookmarkProcessor(32 + 32 + 25);
foreach (var tx in item.AnnotatedTx.Values)
{
processor.PushNew();
processor.AddData(tx.Record.Transaction.GetHash());
processor.AddData(tx.Record.BlockHash ?? uint256.Zero);
processor.UpdateBookmark();
var txInfo = new TransactionInformation()
{
BlockHash = tx.Record.BlockHash,
Height = tx.Record.BlockHash == null ? null : tx.Height,
TransactionId = tx.Record.Transaction.GetHash(),
Transaction = includeTransaction ? tx.Record.Transaction : null,
Confirmations = tx.Record.BlockHash == null ? 0 : currentHeight - tx.Height.Value + 1,
Timestamp = txs.GetByTxId(tx.Record.Transaction.GetHash()).Select(t => t.Record.FirstSeen).First(),
Inputs = ToMatch(txs, tx.Record.Transaction.Inputs.Select(o => txs.GetUTXO(o.PrevOut)).ToList(), extPubKey, tx.Record.TransactionMatch.Inputs),
Outputs = ToMatch(txs, tx.Record.Transaction.Outputs, extPubKey, tx.Record.TransactionMatch.Outputs)
};
item.TxSet.Transactions.Add(txInfo);
txInfo.BalanceChange = txInfo.Outputs.Select(o => o.Value).Sum() - txInfo.Inputs.Select(o => o.Value).Sum();
item.TxSet.Bookmark = processor.CurrentBookmark;
if (item.KnownBookmarks.Contains(processor.CurrentBookmark))
{
item.TxSet.KnownBookmark = processor.CurrentBookmark;
item.TxSet.Transactions.Clear();
}
}
}
if (response.HasChanges() || !(await waitingTransaction))
{
break;
}
waitingTransaction = Task.FromResult(false); //next time, will not wait
}
return(response);
}
public async Task <GetTransactionsResponse> GetTransactions(
string cryptoCode,
[ModelBinder(BinderType = typeof(DerivationStrategyModelBinder))]
DerivationStrategyBase derivationScheme,
[ModelBinder(BinderType = typeof(BitcoinAddressModelBinder))]
BitcoinAddress address,
[ModelBinder(BinderType = typeof(BookmarksModelBinding))]
HashSet <Bookmark> unconfirmedBookmarks = null,
[ModelBinder(BinderType = typeof(BookmarksModelBinding))]
HashSet <Bookmark> confirmedBookmarks = null,
[ModelBinder(BinderType = typeof(BookmarksModelBinding))]
HashSet <Bookmark> replacedBookmarks = null,
bool includeTransaction = true,
bool longPolling = false)
{
var trackedSource = GetTrackedSource(derivationScheme, address);
if (trackedSource == null)
{
throw new ArgumentNullException(nameof(trackedSource));
}
GetTransactionsResponse response = null;
using (CancellationTokenSource cts = new CancellationTokenSource())
{
if (longPolling)
{
cts.CancelAfter(LongPollTimeout);
}
var network = GetNetwork(cryptoCode, false);
var chain = ChainProvider.GetChain(network);
var repo = RepositoryProvider.GetRepository(network);
while (true)
{
response = new GetTransactionsResponse();
int currentHeight = chain.Height;
response.Height = currentHeight;
var txs = await GetAnnotatedTransactions(repo, chain, trackedSource);
foreach (var item in new[]
{
new
{
TxSet = response.ConfirmedTransactions,
KnownBookmarks = confirmedBookmarks ?? new HashSet <Bookmark>(),
AnnotatedTx = txs.ConfirmedTransactions
},
new
{
TxSet = response.UnconfirmedTransactions,
KnownBookmarks = unconfirmedBookmarks ?? new HashSet <Bookmark>(),
AnnotatedTx = txs.UnconfirmedTransactions
},
new
{
TxSet = response.ReplacedTransactions,
KnownBookmarks = replacedBookmarks ?? new HashSet <Bookmark>(),
AnnotatedTx = txs.ReplacedTransactions
},
})
{
item.TxSet.Bookmark = Bookmark.Start;
item.TxSet.KnownBookmark = item.KnownBookmarks.Contains(Bookmark.Start) ? Bookmark.Start : null;
BookmarkProcessor processor = new BookmarkProcessor(32 + 32 + 25);
foreach (var tx in item.AnnotatedTx)
{
processor.PushNew();
processor.AddData(tx.Record.TransactionHash);
processor.AddData(tx.Record.BlockHash ?? uint256.Zero);
processor.UpdateBookmark();
var txInfo = new TransactionInformation()
{
BlockHash = tx.Height.HasValue ? tx.Record.BlockHash : null,
Height = tx.Height,
TransactionId = tx.Record.TransactionHash,
Transaction = includeTransaction ? tx.Record.Transaction : null,
Confirmations = tx.Height.HasValue ? currentHeight - tx.Height.Value + 1 : 0,
Timestamp = txs.GetByTxId(tx.Record.TransactionHash).Select(t => t.Record.FirstSeen).First(),
Inputs = tx.Record.SpentOutpoints.Select(o => txs.GetUTXO(o)).Where(o => o != null).ToList(),
Outputs = tx.Record.GetReceivedOutputs(trackedSource).ToList()
};
item.TxSet.Transactions.Add(txInfo);
txInfo.BalanceChange = txInfo.Outputs.Select(o => o.Value).Sum() - txInfo.Inputs.Select(o => o.Value).Sum();
item.TxSet.Bookmark = processor.CurrentBookmark;
if (item.KnownBookmarks.Contains(processor.CurrentBookmark))
{
item.TxSet.KnownBookmark = processor.CurrentBookmark;
item.TxSet.Transactions.Clear();
}
}
}
if (!longPolling || response.HasChanges())
{
break;
}
if (!await WaitingTransaction(trackedSource, cts.Token))
{
break;
}
}
}
return(response);
}