public static async Task <GetBalancesResponse> GetBalances()
{
//Get nonce:
TimeSpan t = DateTime.UtcNow - new DateTime(1970, 1, 1);
double timeUnix = t.TotalSeconds;
//Form request Uri:
HttpRequestMessage mesg = new HttpRequestMessage()
{
RequestUri = new Uri("account/getbalances?apikey=" + API_KEY + "&nonce=" + timeUnix, UriKind.Relative),
Method = HttpMethod.Get
};
//Compute Signature and add to request header:
string sign = GetSignature(new Uri(client.BaseAddress, mesg.RequestUri));
mesg.Headers.Add("apisign", sign);
//SendAsync request and await response object:
GetBalancesResponse balancesResponse = null;
HttpResponseMessage response = await client.SendAsync(mesg);
if (response.IsSuccessStatusCode)
{
balancesResponse = await response.Content.ReadAsAsync <GetBalancesResponse>();
}
return(balancesResponse);
}
private async Task <GetBalancesResponse> RefreshBalancesAsync()
{
using var activity = MyTelemetry.StartActivity("Load balance info");
var data = await _restApi.GetBalancesAsync();
if (data.Success)
{
_response = new GetBalancesResponse()
{
Balances = data.Result.Select(e => new ExchangeBalance()
{
Symbol = e.Coin, Balance = e.Total, Free = e.Free
}).ToList()
};
_lastUpdate = DateTime.UtcNow;
}
else
{
throw new Exception($"Cannot get balance, error: {data.Error}");
}
_response.AddToActivityAsJsonTag("balance");
_logger.LogDebug("Balance refreshed");
return(_response);
}
public void shouldGetBalances()
{
GetBalancesResponse res = iotaApi.GetBalances(new[] { TEST_ADDRESS_WITH_CHECKSUM }.ToList(), 100);
Assert.IsNotNull(res.Balances);
Assert.IsNotNull(res.Milestone);
Assert.IsNotNull(res.MilestoneIndex);
}
public static List <WalletBalance> BittrexToWalletBalances(GetBalancesResponse response)
{
var walletBalances = new List <WalletBalance>();
foreach (var wallet in response)
{
if (wallet.Balance > 0)
{
var walletBalance = Mapper.Map <WalletBalance>(wallet);
walletBalance.Exchange = Constants.Bittrex;
walletBalances.Add(walletBalance);
}
}
return(walletBalances);
}
/// <summary>
/// Gets the balances of the specified addresses and calculates the total balance till the threshold is reached.
/// </summary>
/// <param name="addresses">addresses</param>
/// <param name="start">start index</param>
/// <param name="threshold">the threshold </param>
/// <returns>an Inputs object</returns>
/// <exception cref="NotEnoughBalanceException">is thrown if threshold exceeds the sum of balance of the specified addresses</exception>
private Inputs GetBalanceAndFormat(string[] addresses, int start, long threshold = 100)
{
GetBalancesResponse getBalancesResponse = GetBalances(addresses.ToList(), 100);
List <long> balances = getBalancesResponse.Balances;
Inputs inputs = new Inputs()
{
InputsList = new List <Input>(), TotalBalance = 0
};
bool threshholdReached = false;
for (int i = 0; i < addresses.Length; i++)
{
if (balances[i] > 0)
{
inputs.InputsList.Add(new Input()
{
Address = addresses[i],
Balance = balances[i],
KeyIndex = start + i
});
inputs.TotalBalance += balances[i];
if (inputs.TotalBalance >= threshold)
{
threshholdReached = true;
break;
}
}
}
if (threshholdReached)
{
return(inputs);
}
throw new NotEnoughBalanceException();
}
public GetBalancesResponse GetBalances(GetBalancesRequest request, IAuthContext authContext)
{
var balanceRepo = _unitOfWork.GetRepository <Balance>();
var balances = balanceRepo.GetList(x => x.AccountId.ToString() == request.AccountId);
GetBalancesResponse response = new GetBalancesResponse();
response.Items = new List <GetBalancesResponseItem>();
foreach (Balance blc in balances)
{
response.Items.Add(new GetBalancesResponseItem()
{
Amount = blc.Amount,
BalanceType = BalanceType.GetInstance(blc.BalanceType).Text,
Currency = CurrencyType.GetInstance(blc.CurrencyType).Text
});
}
return(response);
}
/// <summary>
///
/// </summary>
/// <param name="securitySum"></param>
/// <param name="inputAddress"></param>
/// <param name="remainderAddress"></param>
/// <param name="transfers"></param>
/// <param name="testMode"></param>
/// <returns></returns>
public List <Transaction> InitiateTransfer(
int securitySum, string inputAddress, string remainderAddress,
List <Transfer> transfers, bool testMode)
{
// validate input address
if (!InputValidator.IsAddress(inputAddress))
{
throw new ArgumentException("Invalid addresses provided.");
}
// validate remainder address
if (remainderAddress != null && !InputValidator.IsAddress(remainderAddress))
{
throw new ArgumentException("Invalid addresses provided.");
}
// Input validation of transfers object
if (!InputValidator.IsTransfersCollectionValid(transfers))
{
throw new ArgumentException("Invalid transfers provided.");
}
// Create a new bundle
Bundle bundle = new Bundle();
long totalValue = 0;
List <String> signatureFragments = new List <string>();
String tag = "";
//
// Iterate over all transfers, get totalValue
// and prepare the signatureFragments, message and tag
foreach (Transfer transfer in transfers)
{
// remove the checksum of the address if provided
if (transfer.Address.IsValidChecksum())
{
transfer.Address = transfer.Address.RemoveChecksum();
}
int signatureMessageLength = 1;
// If message longer than 2187 trytes, increase signatureMessageLength (add next transaction)
if (transfer.Message.Length > Constants.MessageLength)
{
// Get total length, message / maxLength (2187 trytes)
signatureMessageLength += (int)Math.Floor((double)transfer.Message.Length / Constants.MessageLength);
String msgCopy = transfer.Message;
// While there is still a message, copy it
while (!string.IsNullOrEmpty(msgCopy))
{
string fragment = msgCopy.Substring(0, Constants.MessageLength);
msgCopy = msgCopy.Substring(Constants.MessageLength, msgCopy.Length - Constants.MessageLength);
// Pad remainder of fragment
fragment = fragment.PadRight(Constants.MessageLength, '9');
signatureFragments.Add(fragment);
}
}
else
{
// Else, get single fragment with 2187 of 9's trytes
String fragment = transfer.Message;
if (transfer.Message.Length < Constants.MessageLength)
{
fragment = fragment.PadRight(Constants.MessageLength, '9');
}
signatureFragments.Add(fragment);
}
tag = transfer.Tag;
// pad for required 27 tryte length
if (transfer.Tag.Length < Constants.TagLength)
{
tag = tag.PadRight(Constants.TagLength, '9');
}
// get current timestamp in seconds
long timestamp = (long)Math.Floor(GetCurrentTimestampInSeconds());
// Add first entry to the bundle
bundle.AddEntry(signatureMessageLength, transfer.Address, transfer.Value, tag, timestamp);
// Sum up total value
totalValue += transfer.Value;
}
// Get inputs if we are sending tokens
if (totalValue != 0)
{
GetBalancesResponse balancesResponse = GetBalances(new List <string> {
inputAddress
}, 100);
var balances = balancesResponse.Balances;
long totalBalance = 0;
foreach (var balance in balances)
{
totalBalance += balance;
}
// get current timestamp in seconds
long timestamp = (long)Math.Floor(GetCurrentTimestampInSeconds());
// bypass the balance checks during unit testing
if (testMode)
{
totalBalance += 1000;
}
if (totalBalance > 0)
{
long toSubtract = 0 - totalBalance;
// Add input as bundle entry
// Only a single entry, signatures will be added later
bundle.AddEntry(securitySum, inputAddress, toSubtract, tag, timestamp);
}
// Return not enough balance error
if (totalValue > totalBalance)
{
throw new IllegalStateException("Not enough balance.");
}
// If there is a remainder value
// Add extra output to send remaining funds to
if (totalBalance > totalValue)
{
long remainder = totalBalance - totalValue;
// Remainder bundle entry if necessary
if (remainderAddress == null)
{
throw new IllegalStateException("No remainder address defined.");
}
bundle.AddEntry(1, remainderAddress, remainder, tag, timestamp);
}
bundle.FinalizeBundle(new Curl(CurlMode.CurlP81));
bundle.AddTrytes(signatureFragments);
return(bundle.Transactions);
}
else
{
throw new System.Exception("Invalid value transfer: the transfer does not require a signature.");
}
}
/// <summary>
/// Main purpose of this function is to get an array of transfer objects as input, and then prepare the transfer by generating the correct bundle,
/// as well as choosing and signing the inputs if necessary (if it's a value transfer). The output of this function is an array of the raw transaction data (trytes)
/// </summary>
/// <param name="seed">81-tryte encoded address of recipient</param>
/// <param name="transfers">the transfers to prepare</param>
/// <param name="inputs">Optional (default null). The inputs</param>
/// <param name="remainderAddress">Optional (default null). if defined, this address will be used for sending the remainder value (of the inputs) to.</param>
/// <returns>a list containing the trytes of the new bundle</returns>
public List <string> PrepareTransfers(string seed, Transfer[] transfers, List <Input> inputs = null,
string remainderAddress = null)
{
InputValidator.CheckTransferArray(transfers);
// Create a new bundle
Bundle bundle = new Bundle();
List <string> signatureFragments = new List <string>();
long totalValue = 0;
string tag = "";
//
// Iterate over all transfers, get totalValue
// and prepare the signatureFragments, message and tag
//
for (int i = 0; i < transfers.Length; i++)
{
int signatureMessageLength = 1;
// If message longer than 2187 trytes, increase signatureMessageLength (add 2nd transaction)
if (transfers[i].Message.Length > 2187)
{
// Get total length, message / maxLength (2187 trytes)
signatureMessageLength += (int)Math.Floor(((double)transfers[i].Message.Length / 2187));
var msgCopy = transfers[i].Message;
// While there is still a message, copy it
while (msgCopy != null)
{
var fragment = msgCopy.Substring(0, 2187 > msgCopy.Length ? msgCopy.Length : 2187);
msgCopy = msgCopy.Substring(2187, msgCopy.Length - 2187);
// Pad remainder of fragment
for (var j = 0; fragment.Length < 2187; j++)
{
fragment += '9';
}
signatureFragments.Add(fragment);
}
}
else
{
// Else, get single fragment with 2187 of 9's trytes
string fragment = "";
if (transfers[i].Message != null)
{
fragment = transfers[i].Message.Substring(0,
transfers[i].Message.Length < 2187 ? transfers[i].Message.Length : 2187);
}
for (var j = 0; fragment.Length < 2187; j++)
{
fragment += '9';
}
signatureFragments.Add(fragment);
}
// get current timestamp in seconds
long timestamp = IotaApiUtils.CreateTimeStampNow();
// If no tag defined, get 27 tryte tag.
tag = transfers[i].Tag != null ? transfers[i].Tag : "999999999999999999999999999";
// Pad for required 27 tryte length
for (var j = 0; tag.Length < 27; j++)
{
tag += '9';
}
// Add first entries to the bundle
// Slice the address in case the user provided a checksummed one
bundle.AddEntry(signatureMessageLength, transfers[i].Address, transfers[i].Value, tag, timestamp);
// Sum up total value
totalValue += transfers[i].Value;
}
// Get inputs if we are sending tokens
if (totalValue != 0)
{
// Case 1: user provided inputs
//
// Validate the inputs by calling getBalances
if (inputs != null && inputs.Count > 0)
{
// Get list if addresses of the provided inputs
List <string> inputAddresses = new List <string>();
foreach (var input in inputs)
{
inputAddresses.Add(input.Address);
}
GetBalancesResponse balances = GetBalances(inputAddresses, 100);
List <Input> confirmedInputs = new List <Input>();
long totalBalance = 0;
for (var i = 0; i < balances.Balances.Count; i++)
{
var thisBalance = balances.Balances[i];
totalBalance += thisBalance;
// If input has balance, add it to confirmedInputs
if (thisBalance > 0)
{
var inputEl = inputs[i];
inputEl.Balance = thisBalance;
confirmedInputs.Add(inputEl);
}
}
// Return not enough balance error
if (totalValue > totalBalance)
{
throw new NotEnoughBalanceException(totalValue);
}
return(AddRemainder(seed, confirmedInputs, bundle, tag, totalValue, remainderAddress,
signatureFragments));
}
// Case 2: Get inputs deterministically
//
// If no inputs provided, derive the addresses from the seed and
// confirm that the inputs exceed the threshold
else
{
List <Input> inputList = GetInputs(seed, 0, 0, (int)totalValue).InputsList;
return(AddRemainder(seed, inputList, bundle, tag, totalValue, remainderAddress, signatureFragments));
}
}
else
{
// If no input required, don't sign and simply finalize the bundle
bundle.FinalizeBundle(curl);
bundle.AddTrytes(signatureFragments);
List <String> bundleTrytes = new List <string>();
bundle.Transactions.ForEach(tx => bundleTrytes.Add(tx.ToTransactionTrytes()));
bundleTrytes.Reverse();
return(bundleTrytes);
}
}
public ActionResult <GetBalancesResponse> GetBalances([FromQuery] GetBalancesRequest request)
{
GetBalancesResponse response = _accountDataService.GetBalances(request, _authContext);
return(Ok(response));
}
/// <summary>
///
/// </summary>
/// <param name="seed"></param>
/// <param name="security"></param>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="threshold"></param>
/// <param name="tips"></param>
/// <returns></returns>
public GetBalancesAndFormatResponse GetInputs(string seed, int security, int start, int end, long threshold,
params string[] tips)
{
// validate the seed
if (!InputValidator.IsValidSeed(seed))
{
throw new IllegalStateException(Constants.INVALID_SEED_INPUT_ERROR);
}
seed = InputValidator.PadSeedIfNecessary(seed);
if (!InputValidator.IsValidSecurityLevel(security))
{
throw new ArgumentException(Constants.INVALID_SECURITY_LEVEL_INPUT_ERROR);
}
// If start value bigger than end, return error
if (start > end)
{
throw new ArgumentException("start must be smaller than end", nameof(start));
}
// or if difference between end and start is bigger than 500 keys
if (end - start > 500)
{
throw new ArgumentException("total number of keys exceeded 500");
}
Stopwatch stopwatch = Stopwatch.StartNew();
// Case 1: start and end
//
// If start and end is defined by the user, simply iterate through the keys
// and call getBalances
if (end != 0)
{
var allAddresses = new string[end - start];
for (var i = start; i < end; i++)
{
var address = IotaApiUtils.NewAddress(seed, security, i, true,
SpongeFactory.Create(SpongeFactory.Mode.KERL));
allAddresses[i] = address;
}
return(GetBalanceAndFormat(allAddresses, tips, threshold, start, security, stopwatch));
}
{
// Case 2: iterate till threshold
//
// Either start from index: 0 or start (if defined) until threshold is reached.
List <Input> allInputs = new List <Input>();
bool thresholdReached = true;
long currentTotal = 0;
for (int i = start; thresholdReached; i++)
{
string address = IotaApiUtils.NewAddress(seed, security, i, true,
SpongeFactory.Create(SpongeFactory.Mode.KERL));
// Received input, this epoch or previous
GetBalancesResponse response =
IotaClient.GetBalances(100, new List <string>()
{
address
}, tips.ToList());
var balance = response.Balances[0];
if (balance > 0)
{
// Is it already spent from?
WereAddressesSpentFromResponse wasSpent = IotaClient.WereAddressesSpentFrom(address);
if (wasSpent.States.Length > 0 && !wasSpent.States[0])
{
// We can use this!
allInputs.Add(new Input
{
Address = address, Balance = balance, KeyIndex = i, Security = security
});
currentTotal += balance;
if (threshold != 0 && threshold <= currentTotal)
{
// Stop because we found threshold
thresholdReached = false;
}
}
}
else
{
// Check if there was any activity at all
FindTransactionsResponse tx = IotaClient.FindTransactionsByAddresses(address);
if (tx.Hashes.Count == 0 || i - start > 500)
{
// Stop because we reached our limit or no activity
thresholdReached = false;
}
}
}
stopwatch.Stop();
return(new GetBalancesAndFormatResponse(allInputs, currentTotal, stopwatch.ElapsedMilliseconds));
}
}
