private List <JSON.API.Internals.Transaction> GetTransactions(SessionSubscriptor subscriptor, SignedLedger ledger)
{
return(ledger.Ledger.Block.Transactions
.Where(transaction => subscriptor.IsSubscribed(transaction, true))
.Select(signed => TransactionConverter.GetTransaction(signed.Transaction)).ToList());
}
private void DispatchRequest(ISession session, Request request, Action <Response, ResultCode> sendResponse)
{
if (request is SendTransactionRequest)
{
var message = (SendTransactionRequest)request;
if (!RequestHelper.TryReadSignedTransaction(message, out var signed))
{
sendResponse.Call(ResponseHelper.CreateSendTransactionResponse(), ResultCode.CannotReadSignedTransaction);
return;
}
LiveService.AddCommand(new SendTransactionCommand(signed, (r, rc) =>
{
if (rc == ResultCode.Success)
{
ExplorerConnectionService.SubscriptionManager.ListenTo(session, new TransactionTopic(signed.Hash));
}
sendResponse.Call(ResponseHelper.CreateSendTransactionResponse(signed.Hash), rc);
}));
}
else if (request is GetSignedLedgerRequest)
{
var message = (GetSignedLedgerRequest)request;
if (!message.Height.HasValue) // Get current ledger
{
var ledger = LedgerService.LedgerManager.GetSignedLedger();
sendResponse.Call(ResponseHelper.CreateGetSignedLedgerResponse(ledger), ResultCode.Success);
return;
}
var height = message.Height.Value;
if (height < 0)
{
sendResponse.Call(ResponseHelper.CreateGetSignedLedgerResponse(), ResultCode.InvalidInputParam);
return;
}
var currentHeight = LedgerService.LedgerManager.GetSignedLedger().GetHeight();
if (height > currentHeight)
{
sendResponse.Call(ResponseHelper.CreateGetSignedLedgerResponse(), ResultCode.LedgerDoesnotExist);
return;
}
if (height == currentHeight)
{
var ledger = LedgerService.LedgerManager.GetSignedLedger();
sendResponse.Call(ResponseHelper.CreateGetSignedLedgerResponse(ledger), ResultCode.Success);
return;
}
var signed = DatabaseService.ReadDatabaseManager.GetLedgerFromRaw(height);
if (signed == null)
{
sendResponse.Call(ResponseHelper.CreateGetSignedLedgerResponse(), ResultCode.LedgerDoesnotExist);
return;
}
sendResponse.Call(ResponseHelper.CreateGetSignedLedgerResponse(signed), ResultCode.Success);
}
else if (request is GetBalanceRequest)
{
var message = (GetBalanceRequest)request;
var command = new GetAccountCommand(message.Address, (acc, rc) => sendResponse(ResponseHelper.CreateGetBalanceResponse(acc), rc));
LiveService.AddCommand(command);
}
else if (request is GetAccountRequest)
{
var message = (GetAccountRequest)request;
var command = new GetAccountCommand(message.Address, (acc, rc) => sendResponse(ResponseHelper.CreateGetAccountResponse(acc), rc));
LiveService.AddCommand(command);
}
else if (request is GetTransactionRequest)
{
var message = (GetTransactionRequest)request;
byte[] hash;
try
{
hash = Convert.FromBase64String(message.Hash);
}
catch (Exception)
{
sendResponse.Call(ResponseHelper.CreateGetTransactionResponse(), ResultCode.NotABase64);
return;
}
if (hash.Length != TransactionHash.SIZE)
{
sendResponse.Call(ResponseHelper.CreateGetTransactionResponse(), ResultCode.NotAHash256);
return;
}
var transaction = ExplorerDatabaseService.ReadDatabaseManager.GetTransaction(new TransactionHash(hash));
sendResponse.Call(ResponseHelper.CreateGetTransactionResponse(TransactionConverter.GetTransaction(transaction)), ResultCode.Success);
}
else if (request is GetTransactionHistoryRequest)
{
var message = (GetTransactionHistoryRequest)request;
Address address;
try
{
address = new Address(message.Address);
}
catch (Exception)
{
sendResponse.Call(ResponseHelper.CreateGetTransactionHistoryResponse(), ResultCode.ReadAddressFailure);
return;
}
if (message.Count <= 0)
{
sendResponse.Call(ResponseHelper.CreateGetTransactionHistoryResponse(), ResultCode.InvalidInputParam);
return;
}
if (message.Page <= 0)
{
sendResponse.Call(ResponseHelper.CreateGetTransactionHistoryResponse(), ResultCode.InvalidInputParam);
return;
}
// TODO this is a temporary hack
{
var raw = ExplorerDatabaseService.ReadDatabaseManager.GetTransactionHistory(address, message.Height).OrderByDescending(_ => _.LedgerHeight).ToList();
var total = raw.Count;
raw = raw.Skip(message.Count * (message.Page - 1)).Take(message.Count).ToList();
var results = new List <HistoricalTransaction>();
foreach (var transaction in raw)
{
var ledger = DatabaseService.ReadDatabaseManager.GetLedgerFromRaw(transaction.LedgerHeight);
results.Add(new HistoricalTransaction(transaction.LedgerHeight, transaction.Transaction, ledger.GetTimestamp()));
}
var transactions = results.Select(TransactionConverter.GetHistoricalTransaction).ToList();
sendResponse.Call(ResponseHelper.CreateGetTransactionHistoryResponse(transactions, total), ResultCode.Success);
}
}
else if (request is GetLedgerRequest)
{
var message = (GetLedgerRequest)request;
if (message.Height != null && message.Height >= 0)
{
var currentHeight = LedgerService.LedgerManager.GetSignedLedger().GetHeight();
if (message.Height > currentHeight)
{
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(), ResultCode.LedgerDoesnotExist);
return;
}
if (message.Height == currentHeight)
{
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(LedgerConverter.GetLedger(LedgerService.LedgerManager.GetSignedLedger())), ResultCode.Success);
return;
}
var signed = DatabaseService.ReadDatabaseManager.GetLedgerFromRaw(message.Height.Value);
if (signed == null)
{
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(), ResultCode.LedgerDoesnotExist);
return;
}
var ledger = LedgerConverter.GetLedger(signed);
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(ledger), ResultCode.Success);
return;
}
if (!string.IsNullOrEmpty(message.Hash))
{
try
{
var bytes = Convert.FromBase64String(message.Hash);
var ledger = DatabaseService.ReadDatabaseManager.GetLedgerByHash(new LedgerHash(bytes));
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(LedgerConverter.GetLedger(ledger)), ResultCode.Success);
return;
}
catch (Exception e)
{
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(), ResultCode.InvalidInputParam);
return;
}
}
sendResponse.Call(ResponseHelper.CreateGetLedgerResponse(), ResultCode.InvalidInputParam);
}
else if (request is GetOrderBookRequest)
{
var message = (GetOrderBookRequest)request;
if (message.Symbol.IsNullOrEmpty() || !OrderBookService.GetSymbols().Contains(message.Symbol))
{
sendResponse.Call(ResponseHelper.CreateGetOrderBookResponse(null, message.Symbol), ResultCode.InvalidInputParam);
return;
}
OrderBookService.GetOrderBook(message.Symbol, (ob) => sendResponse(ResponseHelper.CreateGetOrderBookResponse(OrderConverter.GetOrders(ob), message.Symbol), ResultCode.Success));
}
else if (request is SubscribeRequest)
{
var message = (SubscribeRequest)request;
if (TopicsConverter.TryGetTopic(message.Topic, OrderBookService.GetSymbols(), out var topic))
{
ExplorerConnectionService.SubscriptionManager.ListenTo(session, topic);
sendResponse(ResponseHelper.CreateSubscribeResponse(), ResultCode.Success);
return;
}
sendResponse(ResponseHelper.CreateSubscribeResponse(), ResultCode.InvalidInputParam);
}
else if (request is GetLatestLedgersRequest)
{
var height = LedgerService.LedgerManager.GetSignedLedger().GetHeight();
var ledgers = DatabaseService.ReadDatabaseManager.GetLedgersFromHeight(height - 9);
var results = ledgers.Select(LedgerConverter.GetLedger).ToList();
sendResponse.Call(ResponseHelper.CreateGetLatestLedgersResponse(results), ResultCode.Success);
}
else
{
sendResponse.Call(new Response(), ResultCode.UnknownMessage);
}
}