public async Task get_network_id_should_invoke_blockchain_bridge_get_network_id()
{
const int networkId = 1;
_blockchainBridge.GetNetworkId().Returns(networkId);
var result = await _ndmBridge.GetNetworkIdAsync();
_blockchainBridge.Received().GetNetworkId();
result.Should().Be(networkId);
}
public async Task get_network_id_should_invoke_proxy_eth_chainId()
{
const int networkId = 1;
_proxy.eth_chainId().Returns(RpcResult <UInt256> .Ok(networkId));
var result = await _ndmBridge.GetNetworkIdAsync();
await _proxy.Received().eth_chainId();
result.Should().Be(networkId);
}
public async Task <UInt256> ReadDepositBalanceAsync(Address onBehalfOf, Keccak depositId)
{
var txData = _abiEncoder.Encode(AbiEncodingStyle.IncludeSignature, ContractData.DepositBalanceAbiSig,
depositId.Bytes);
Transaction transaction = new Transaction
{
Value = 0,
Data = txData,
To = _contractAddress,
SenderAddress = onBehalfOf,
GasLimit = 100000,
GasPrice = 0.GWei(),
Nonce = await _blockchainBridge.GetNonceAsync(onBehalfOf)
};
_wallet.Sign(transaction, await _blockchainBridge.GetNetworkIdAsync());
var data = await _blockchainBridge.CallAsync(transaction);
return(data.ToUInt256());
}
public async Task <Keccak> ClaimRefundAsync(Address onBehalfOf, RefundClaim refundClaim, UInt256 gasPrice)
{
byte[] txData = _abiEncoder.Encode(AbiEncodingStyle.IncludeSignature, ContractData.ClaimRefundSig, refundClaim.AssetId.Bytes, refundClaim.Units, refundClaim.Value, refundClaim.ExpiryTime, refundClaim.Pepper, refundClaim.Provider, onBehalfOf);
Transaction transaction = new Transaction();
transaction.Value = 0;
transaction.Data = txData;
transaction.To = _contractAddress;
transaction.SenderAddress = onBehalfOf;
transaction.GasLimit = (long)GasLimit;
transaction.GasPrice = gasPrice;
transaction.Nonce = await _blockchainBridge.ReserveOwnTransactionNonceAsync(onBehalfOf);
_wallet.Sign(transaction, await _blockchainBridge.GetNetworkIdAsync());
if (_logger.IsInfo)
{
_logger.Info($"Sending a refund claim transaction for {refundClaim.DepositId} to be refunded to {refundClaim.RefundTo}");
}
return(await _blockchainBridge.SendOwnTransactionAsync(transaction));
}
public async Task <Keccak?> MakeDepositAsync(Address onBehalfOf, Deposit deposit, UInt256 gasPrice)
{
var txData = _abiEncoder.Encode(AbiEncodingStyle.IncludeSignature, ContractData.DepositAbiSig,
deposit.Id.Bytes, deposit.Units, deposit.ExpiryTime);
Transaction transaction = new Transaction
{
Value = deposit.Value,
Data = txData,
To = _contractAddress,
SenderAddress = onBehalfOf,
GasLimit = (long)GasLimit,
GasPrice = gasPrice
};
// check
_wallet.Sign(transaction, await _blockchainBridge.GetNetworkIdAsync());
return(await _blockchainBridge.SendOwnTransactionAsync(transaction));
}
public async Task <Keccak?> ClaimPaymentAsync(PaymentClaim paymentClaim, Address coldWalletAddress,
UInt256 gasPrice)
{
byte[] txData = _abiEncoder.Encode(AbiEncodingStyle.IncludeSignature,
ContractData.ClaimPaymentAbiSig,
paymentClaim.AssetId.Bytes,
paymentClaim.Units,
paymentClaim.Value,
paymentClaim.ExpiryTime,
paymentClaim.Pepper,
coldWalletAddress,
paymentClaim.Consumer,
new[] { paymentClaim.UnitsRange.From, paymentClaim.UnitsRange.To },
paymentClaim.Signature.V,
paymentClaim.Signature.R,
paymentClaim.Signature.S);
if (_logger.IsInfo)
{
_logger.Info($"Sending a payment claim transaction - Range: [{paymentClaim.UnitsRange.From},{paymentClaim.UnitsRange.To}] Units: {paymentClaim.Units} to be paid out to {coldWalletAddress}");
}
Transaction transaction = new Transaction
{
Value = 0,
Data = txData,
To = _contractAddress,
SenderAddress = paymentClaim.Provider,
GasLimit = (long)GasLimit, // when account does not exist then we pay for account creation of cold wallet
GasPrice = gasPrice,
Nonce = await _bridge.GetNonceAsync(paymentClaim.Provider)
};
// check
_wallet.Sign(transaction, await _bridge.GetNetworkIdAsync());
return(await _bridge.SendOwnTransactionAsync(transaction));
}
private async Task <Keccak> UpdateAsync(Keccak transactionHash, Action <Transaction> update)
{
if (transactionHash is null)
{
throw new ArgumentException("Transaction hash cannot be null.", nameof(transactionHash));
}
var transactionDetails = await _blockchainBridge.GetTransactionAsync(transactionHash);
if (transactionDetails is null)
{
throw new ArgumentException($"Transaction was not found for hash: '{transactionHash}'.", nameof(transactionHash));
}
if (!transactionDetails.IsPending)
{
throw new InvalidOperationException($"Transaction with hash: '{transactionHash}' is not pending.");
}
var transaction = transactionDetails.Transaction;
update(transaction);
_wallet.Sign(transaction, await _blockchainBridge.GetNetworkIdAsync());
var hash = await _blockchainBridge.SendOwnTransactionAsync(transaction);
if (hash is null)
{
throw new InvalidOperationException("Transaction was not sent (received an empty hash).");
}
if (_logger.IsInfo)
{
_logger.Info($"Received a new transaction hash: '{hash}' (previous transaction hash: '{transactionHash}').");
}
return(hash);
}
public async Task <FaucetResponse> TryRequestEthAsync(string node, Address?address, UInt256 value)
{
if (!_enabled)
{
if (_logger.IsInfo)
{
_logger.Info("NDM Faucet is disabled.");
}
return(FaucetResponse.FaucetDisabled);
}
if (!_initialized)
{
if (_logger.IsInfo)
{
_logger.Info("NDM Faucet is not initialized.");
}
return(FaucetResponse.FaucetDisabled);
}
if (_today.Date != _timestamper.UtcNow.Date)
{
lock (_locker)
{
_today = _timestamper.UtcNow;
_todayRequestsTotalValueWei = 0;
}
if (_logger.IsInfo)
{
_logger.Info($"NDM Faucet has updated its today's date ({_today.Date:d}) and reset the total requests value.");
}
}
if (_faucetAddress is null || _faucetAddress == Address.Zero)
{
if (_logger.IsWarn)
{
_logger.Warn("NDM Faucet address is not set.");
}
return(FaucetResponse.FaucetAddressNotSet);
}
if (string.IsNullOrWhiteSpace(node) || address is null || address == Address.Zero)
{
if (_logger.IsInfo)
{
_logger.Info("Invalid NDM Faucet request.");
}
return(FaucetResponse.InvalidNodeAddress);
}
if (_faucetAddress == address)
{
if (_logger.IsInfo)
{
_logger.Info("NDM Faucet request cannot be processed for the same address as NDM Faucet.");
}
return(FaucetResponse.SameAddressAsFaucet);
}
if (value == 0)
{
if (_logger.IsInfo)
{
_logger.Info("NDM Faucet request cannot be processed for the zero value.");
}
return(FaucetResponse.ZeroValue);
}
if (value > _maxValue)
{
if (_logger.IsInfo)
{
_logger.Info($"NDM Faucet request from: {node} has too big value: {value} wei > {_maxValue} wei.");
}
return(FaucetResponse.TooBigValue);
}
if (_logger.IsInfo)
{
_logger.Info($"Received NDM Faucet request from: {node}, address: {address}, value: {value} wei.");
}
if (_pendingRequests.TryGetValue(node, out _))
{
if (_logger.IsInfo)
{
_logger.Info($"NDM Faucet request from: {node} is already being processed.");
}
return(FaucetResponse.RequestAlreadyProcessing);
}
var latestRequest = await _requestRepository.GetLatestAsync(node);
var requestedAt = _timestamper.UtcNow;
if (!(latestRequest is null) && latestRequest.RequestedAt.Date >= requestedAt.Date)
{
if (_logger.IsInfo)
{
_logger.Info($"NDM Faucet request from: {node} was already processed today at: {latestRequest.RequestedAt}.");
}
return(FaucetResponse.RequestAlreadyProcessedToday(FaucetRequestDetails.From(latestRequest)));
}
if (!_pendingRequests.TryAdd(node, true))
{
if (_logger.IsWarn)
{
_logger.Warn($"Couldn't start processing NDM Faucet request from: {node}.");
}
return(FaucetResponse.RequestError);
}
lock (_locker)
{
_todayRequestsTotalValueWei += value;
if (_logger.IsInfo)
{
_logger.Info($"Increased NDM Faucet total value of today's ({_today.Date:d}) requests to {_todayRequestsTotalValueWei} wei.");
}
}
if (_todayRequestsTotalValueWei > _dailyRequestsTotalValueWei)
{
if (_logger.IsInfo)
{
_logger.Info($"Daily ({_today.Date:d}) requests value for NDM Faucet was reached ({_dailyRequestsTotalValueWei} wei).");
}
return(FaucetResponse.DailyRequestsTotalValueReached);
}
if (_logger.IsInfo)
{
_logger.Info($"NDM Faucet is processing request for: {node}, address: {address}, value: {value} wei.");
}
try
{
var nonce = await _blockchainBridge.GetNonceAsync(_faucetAddress);
var transaction = new Transaction
{
Value = value,
GasLimit = Transaction.BaseTxGasCost,
GasPrice = 20.GWei(),
To = address,
SenderAddress = _faucetAddress,
Nonce = nonce
};
_wallet.Sign(transaction, await _blockchainBridge.GetNetworkIdAsync());
Keccak?transactionHash = await _blockchainBridge.SendOwnTransactionAsync(transaction);
if (transactionHash == null)
{
return(FaucetResponse.ProcessingRequestError);
}
if (latestRequest is null)
{
Keccak requestId = Keccak.Compute(Rlp.Encode(Rlp.Encode(node)).Bytes);
latestRequest = new EthRequest(requestId, node, address, value, requestedAt, transactionHash);
await _requestRepository.AddAsync(latestRequest);
}
else
{
latestRequest.UpdateRequestDetails(address, value, requestedAt, transactionHash);
await _requestRepository.UpdateAsync(latestRequest);
}
if (_logger.IsInfo)
{
_logger.Info($"NDM Faucet has successfully processed request for: {node}, address: {address}, value: {value} wei.");
}
return(FaucetResponse.RequestCompleted(FaucetRequestDetails.From(latestRequest)));
}
catch (Exception ex)
{
if (_logger.IsError)
{
_logger.Error(ex.Message, ex);
}
lock (_locker)
{
_todayRequestsTotalValueWei -= value;
if (_logger.IsInfo)
{
_logger.Info($"Decreased NDM Faucet total value of today's ({_today.Date:d}) requests to {_todayRequestsTotalValueWei} wei.");
}
}
return(FaucetResponse.ProcessingRequestError);
}
finally
{
_pendingRequests.TryRemove(node, out _);
}
}