private static DepositDetails GetDepositDetails(DataAssetUnitType unitType = DataAssetUnitType.Unit,
uint confirmationTimestamp = DepositConfirmationTimestamp)
=> new DepositDetails(new Deposit(Keccak.Zero, 1, 1, 1),
GetDataAsset(unitType), TestItem.AddressB, Array.Empty <byte>(), 1,
new [] { TransactionInfo.Default(TestItem.KeccakA, 1, 1, 1, 1) }, confirmationTimestamp);
public async Task <RefundClaimStatus> TryClaimEarlyRefundAsync(DepositDetails deposit, Address refundTo)
{
ulong now = _timestamper.EpochSeconds;
if (!deposit.CanClaimEarlyRefund(now, deposit.Timestamp))
{
return(RefundClaimStatus.Empty);
}
Block?latestBlock = await _blockchainBridge.GetLatestBlockAsync();
if (latestBlock == null)
{
return(RefundClaimStatus.Empty);
}
now = (ulong)latestBlock.Timestamp;
if (!deposit.CanClaimEarlyRefund(now, deposit.Timestamp))
{
return(RefundClaimStatus.Empty);
}
Keccak depositId = deposit.Deposit.Id;
Keccak?transactionHash = deposit.ClaimedRefundTransaction?.Hash;
if (transactionHash is null)
{
Address provider = deposit.DataAsset.Provider.Address;
if (deposit.EarlyRefundTicket == null)
{
throw new InvalidDataException($"Early refund ticket is null on a claimable deposit {depositId}");
}
EarlyRefundTicket ticket = deposit.EarlyRefundTicket;
EarlyRefundClaim earlyRefundClaim = new EarlyRefundClaim(ticket.DepositId, deposit.DataAsset.Id,
deposit.Deposit.Units, deposit.Deposit.Value, deposit.Deposit.ExpiryTime, deposit.Pepper, provider,
ticket.ClaimableAfter, ticket.Signature, refundTo);
UInt256 gasPrice = await _gasPriceService.GetCurrentRefundAsync();
transactionHash = await _refundService.ClaimEarlyRefundAsync(refundTo, earlyRefundClaim, gasPrice);
if (transactionHash is null)
{
if (_logger.IsError)
{
_logger.Error("There was an error when trying to claim early refund (no transaction hash returned).");
}
return(RefundClaimStatus.Empty);
}
deposit.AddClaimedRefundTransaction(TransactionInfo.Default(transactionHash, 0, gasPrice,
_refundService.GasLimit, _timestamper.EpochSeconds));
await _depositRepository.UpdateAsync(deposit);
if (_logger.IsInfo)
{
_logger.Info($"Claimed an early refund for deposit: '{depositId}', gas price: {gasPrice} wei, transaction hash: '{transactionHash}' (awaits a confirmation).");
}
}
bool confirmed = await TryConfirmClaimAsync(deposit, "early ");
return(confirmed
? RefundClaimStatus.Confirmed(transactionHash)
: RefundClaimStatus.Unconfirmed(transactionHash));
}
private static DepositDetails GetDepositDetails()
=> new DepositDetails(new Deposit(Keccak.OfAnEmptyString, 1, 1, 1),
GetDataAsset(), TestItem.AddressB, Array.Empty <byte>(), 1,
new [] { TransactionInfo.Default(TestItem.KeccakA, 1, 1, 1, 1) },
earlyRefundTicket: new EarlyRefundTicket(Keccak.OfAnEmptyString, 1, null));
public async Task <RefundClaimStatus> TryClaimRefundAsync(DepositDetails deposit, Address refundTo)
{
ulong now = _timestamper.UnixTime.Seconds;
if (!deposit.CanClaimRefund(now))
{
DisplayRefundInfo(deposit, now);
return(RefundClaimStatus.Empty);
}
Block?latestBlock = await _blockchainBridge.GetLatestBlockAsync();
if (latestBlock == null)
{
return(RefundClaimStatus.Empty);
}
now = (ulong)latestBlock.Timestamp;
if (!deposit.CanClaimRefund(now))
{
DisplayRefundInfo(deposit, now);
return(RefundClaimStatus.Empty);
}
Keccak depositId = deposit.Deposit.Id;
Keccak?transactionHash = deposit.ClaimedRefundTransaction?.Hash;
if (transactionHash is null)
{
Address provider = deposit.DataAsset.Provider.Address;
RefundClaim refundClaim = new RefundClaim(depositId, deposit.DataAsset.Id, deposit.Deposit.Units,
deposit.Deposit.Value, deposit.Deposit.ExpiryTime, deposit.Pepper, provider, refundTo);
UInt256 gasPrice = await _gasPriceService.GetCurrentRefundGasPriceAsync();
transactionHash = await _refundService.ClaimRefundAsync(refundTo, refundClaim, gasPrice);
if (transactionHash is null)
{
if (_logger.IsError)
{
_logger.Error("There was an error when trying to claim refund (no transaction hash returned).");
}
return(RefundClaimStatus.Empty);
}
deposit.AddClaimedRefundTransaction(TransactionInfo.Default(transactionHash, 0, gasPrice,
_refundService.GasLimit, _timestamper.UnixTime.Seconds));
await _depositRepository.UpdateAsync(deposit);
if (_logger.IsInfo)
{
_logger.Info($"Claimed a refund for deposit: '{depositId}', gas price: {gasPrice} wei, transaction hash: '{transactionHash}' (awaits a confirmation).");
}
}
bool confirmed = await TryConfirmClaimAsync(deposit, string.Empty);
return(confirmed
? RefundClaimStatus.Confirmed(transactionHash)
: RefundClaimStatus.Unconfirmed(transactionHash));
}
private IEnumerable <PaymentClaim> GetPaymentClaims()
{
yield return(new PaymentClaim(
id: TestItem.KeccakA,
depositId: TestItem.KeccakB,
assetId: TestItem.KeccakC,
assetName: "asset1",
units: 1,
claimedUnits: 2,
unitsRange: new UnitsRange(1, 2),
value: 4,
claimedValue: 5,
expiryTime: 6,
pepper: new byte[] { 1, 2, 3 },
provider: TestItem.AddressA,
consumer: TestItem.AddressB,
signature: new Signature(1, 2, 37),
timestamp: 7,
transactions: Enumerable.Empty <TransactionInfo>(),
status: PaymentClaimStatus.Claimed));
yield return(new PaymentClaim(
id: TestItem.KeccakB,
depositId: TestItem.KeccakA,
assetId: TestItem.KeccakD,
assetName: "asset2",
units: 1,
claimedUnits: 2,
unitsRange: new UnitsRange(1, 2),
value: 4,
claimedValue: 5,
expiryTime: 6,
pepper: new byte[] { 1, 2, 3 },
provider: TestItem.AddressA,
consumer: TestItem.AddressC,
signature: new Signature(1, 2, 37),
timestamp: 7,
transactions: Enumerable.Empty <TransactionInfo>(),
status: PaymentClaimStatus.Cancelled));
yield return(new PaymentClaim(
id: TestItem.KeccakC,
depositId: TestItem.KeccakF,
assetId: TestItem.KeccakE,
assetName: "asset3",
units: 1,
claimedUnits: 2,
unitsRange: new UnitsRange(1, 2),
value: 4,
claimedValue: 5,
expiryTime: 6,
pepper: new byte[] { 1, 2, 3 },
provider: TestItem.AddressA,
consumer: TestItem.AddressD,
signature: new Signature(1, 2, 37),
timestamp: 7,
transactions: Enumerable.Empty <TransactionInfo>(),
status: PaymentClaimStatus.Sent));
yield return(new PaymentClaim(
id: TestItem.KeccakD,
depositId: TestItem.KeccakE,
assetId: TestItem.KeccakF,
assetName: "asset4",
units: 1,
claimedUnits: 2,
unitsRange: new UnitsRange(1, 2),
value: 4,
claimedValue: 5,
expiryTime: 6,
pepper: new byte[] { 1, 2, 3 },
provider: TestItem.AddressA,
consumer: TestItem.AddressA,
signature: new Signature(1, 2, 37),
timestamp: 7,
transactions: new TransactionInfo[] { TransactionInfo.Default(Keccak.Zero, value: 10, gasPrice: 1, gasLimit: 100, timestamp: 10) },
status: PaymentClaimStatus.Sent));
}
private static DepositDetails GetDepositDetails()
=> new DepositDetails(new Deposit(Keccak.OfAnEmptyString, 1, DepositExpiryTime, 1),
GetDataAsset(), TestItem.AddressB, Array.Empty <byte>(), 1,
new[] { TransactionInfo.Default(TestItem.KeccakA, 1, 1, 1, 1) });
public async Task <PaymentClaim?> ProcessAsync(DataDeliveryReceiptRequest receiptRequest, Signature signature)
{
Keccak depositId = receiptRequest.DepositId;
Consumer?consumer = await _consumerRepository.GetAsync(depositId);
if (consumer is null)
{
if (_logger.IsError)
{
_logger.Error($"Could not find any consumers for deposit {depositId} in the repository.");
}
return(null);
}
DataRequest dataRequest = consumer.DataRequest;
UnitsRange range = receiptRequest.UnitsRange;
uint claimedUnits = range.Units;
BigInteger claimedValue = claimedUnits * (BigInteger)consumer.DataRequest.Value / consumer.DataRequest.Units;
ulong timestamp = _timestamper.UnixTime.Seconds;
Rlp unitsRangeRlp = _unitsRangeRlpDecoder.Encode(range);
Keccak id = Keccak.Compute(Rlp.Encode(Rlp.Encode(depositId), Rlp.Encode(timestamp), unitsRangeRlp).Bytes);
PaymentClaim paymentClaim = new PaymentClaim(id, consumer.DepositId, consumer.DataAsset.Id,
consumer.DataAsset.Name, dataRequest.Units, claimedUnits, range, dataRequest.Value,
(UInt256)claimedValue, dataRequest.ExpiryTime, dataRequest.Pepper, dataRequest.Provider,
dataRequest.Consumer, signature, timestamp, Array.Empty <TransactionInfo>(), PaymentClaimStatus.Unknown);
await _paymentClaimRepository.AddAsync(paymentClaim);
if (_logger.IsInfo)
{
_logger.Info($"Claiming a payment (id: '{paymentClaim.Id}') for deposit: '{depositId}', range: [{range.From}, {range.To}], units: {claimedUnits}.");
}
UInt256 gasPrice = await _gasPriceService.GetCurrentPaymentClaimGasPriceAsync();
Keccak?transactionHash = null;
if (_disableSendingPaymentClaimTransaction)
{
if (_logger.IsWarn)
{
_logger.Warn("*** NDM provider sending payment claim transaction is disabled ***");
}
}
else
{
transactionHash = await SendTransactionAsync(paymentClaim, gasPrice);
if (transactionHash is null)
{
if (_logger.IsInfo)
{
_logger.Info($"Payment claim (id: {paymentClaim.Id}) for deposit: '{paymentClaim.DepositId}' did not receive a transaction hash.");
}
return(paymentClaim);
}
}
if (_logger.IsInfo)
{
_logger.Info($"Payment claim (id: {paymentClaim.Id}) for deposit: '{paymentClaim.DepositId}' received a transaction hash: '{transactionHash}'.");
}
paymentClaim.AddTransaction(TransactionInfo.Default(transactionHash, 0, gasPrice, _paymentService.GasLimit,
timestamp));
paymentClaim.SetStatus(PaymentClaimStatus.Sent);
await _paymentClaimRepository.UpdateAsync(paymentClaim);
string claimedEth = ((decimal)claimedValue / Eth).ToString("0.0000");
if (_logger.IsInfo)
{
_logger.Info($"Sent a payment claim (id: '{paymentClaim.Id}') for deposit: '{depositId}', range: [{range.From}, {range.To}], units: {claimedUnits}, units: {claimedUnits}, value: {claimedValue} wei ({claimedEth} ETH, transaction hash: '{transactionHash}'.");
}
return(paymentClaim);
}
public async Task <Keccak?> MakeAsync(Keccak assetId, uint units, UInt256 value, Address address,
UInt256?gasPrice = null)
{
if (!_wallet.IsUnlocked(address))
{
if (_logger.IsWarn)
{
_logger.Warn($"Account: '{address}' is locked, can't make a deposit.");
}
return(null);
}
DataAsset?dataAsset = _dataAssetService.GetDiscovered(assetId);
if (dataAsset is null)
{
if (_logger.IsWarn)
{
_logger.Warn($"Available data asset: '{assetId}' was not found.");
}
return(null);
}
if (!_dataAssetService.IsAvailable(dataAsset))
{
if (_logger.IsWarn)
{
_logger.Warn($"Data asset: '{assetId}' is unavailable, state: {dataAsset.State}.");
}
return(null);
}
if (dataAsset.KycRequired && !await _kycVerifier.IsVerifiedAsync(assetId, address))
{
return(null);
}
Address providerAddress = dataAsset.Provider.Address;
INdmPeer?provider = _providerService.GetPeer(providerAddress);
if (provider is null)
{
if (_logger.IsWarn)
{
_logger.Warn($"Provider nodes were not found for address: '{providerAddress}'.");
}
return(null);
}
if (dataAsset.MinUnits > units || dataAsset.MaxUnits < units)
{
if (_logger.IsWarn)
{
_logger.Warn($"Invalid data request units: '{units}', min: '{dataAsset.MinUnits}', max: '{dataAsset.MaxUnits}'.");
}
return(null);
}
UInt256 unitsValue = units * dataAsset.UnitPrice;
if (units * dataAsset.UnitPrice != value)
{
if (_logger.IsWarn)
{
_logger.Warn($"Invalid data request value: '{value}', while it should be: '{unitsValue}'.");
}
return(null);
}
uint now = (uint)_timestamper.EpochSeconds;
uint expiryTime = now + (uint)dataAsset.Rules.Expiry.Value;
expiryTime += dataAsset.UnitType == DataAssetUnitType.Unit ? 0 : units;
byte[] pepper = _cryptoRandom.GenerateRandomBytes(16);
byte[] abiHash = _abiEncoder.Encode(AbiEncodingStyle.Packed, _depositAbiSig, assetId.Bytes,
units, value, expiryTime, pepper, dataAsset.Provider.Address, address);
Keccak depositId = Keccak.Compute(abiHash);
Deposit deposit = new Deposit(depositId, units, expiryTime, value);
DepositDetails depositDetails = new DepositDetails(deposit, dataAsset, address, pepper, now,
Enumerable.Empty <TransactionInfo>(), 0, requiredConfirmations: _requiredBlockConfirmations);
UInt256 gasPriceValue = gasPrice is null || gasPrice.Value == 0
? await _gasPriceService.GetCurrentAsync()
: gasPrice.Value;
await _depositRepository.AddAsync(depositDetails);
Keccak?transactionHash = null;
if (_logger.IsInfo)
{
_logger.Info($"Created a deposit with id: '{depositId}', for data asset: '{assetId}', address: '{address}'.");
}
if (_disableSendingDepositTransaction)
{
if (_logger.IsWarn)
{
_logger.Warn("*** NDM sending deposit transaction is disabled ***");
}
}
else
{
transactionHash = await _depositService.MakeDepositAsync(address, deposit, gasPriceValue);
}
if (transactionHash == null)
{
if (_logger.IsWarn)
{
_logger.Warn($"Failed to make a deposit with for data asset: '{assetId}', address: '{address}', gas price: {gasPriceValue} wei.");
}
return(null);
}
if (_logger.IsInfo)
{
_logger.Info($"Sent a deposit with id: '{depositId}', transaction hash: '{transactionHash}' for data asset: '{assetId}', address: '{address}', gas price: {gasPriceValue} wei.");
}
depositDetails.AddTransaction(TransactionInfo.Default(transactionHash, deposit.Value, gasPriceValue,
_depositService.GasLimit, now));
await _depositRepository.UpdateAsync(depositDetails);
return(depositId);
}
private static DepositDetails GetDepositDetails(uint timestamp = 0,
IEnumerable <TransactionInfo> transactions = null)
=> new DepositDetails(new Deposit(Keccak.Zero, 1, 1, 1),
GetDataAsset(DataAssetUnitType.Unit), TestItem.AddressB, Array.Empty <byte>(), 1,
transactions ?? new[] { TransactionInfo.Default(TestItem.KeccakA, 1, 1, 1, 1) }, timestamp);
private static DepositDetails GetDepositDetails(uint confirmationTimestamp = 0, uint expiryTime = 1,
bool kycRequired = false)
=> new DepositDetails(new Deposit(Keccak.Zero, 1, expiryTime, 1),
GetDataAsset(kycRequired), TestItem.AddressB, Array.Empty <byte>(), 1,
new [] { TransactionInfo.Default(TestItem.KeccakA, 1, 1, 1, 1) }, confirmationTimestamp);
private static DepositDetails GetDepositDetails(uint timestamp = 0)
=> new DepositDetails(new Deposit(TestItem.KeccakA, 1, 1, 1),
GetDataAsset(DataAssetUnitType.Unit), TestItem.AddressA, Array.Empty <byte>(), 1,
new [] { TransactionInfo.Default(TestItem.KeccakA, 1, 1, 1, 1) }, timestamp);