private ResultWrapper <UInt256?> GetAccountNonce(Address address, BlockParameter blockParameter)
{
if (blockParameter.Type == BlockParameterType.Pending)
{
blockParameter.Type = BlockParameterType.Latest;
}
BlockHeader header;
try
{
header = _blockchainBridge.GetHeader(blockParameter);
}
catch (JsonRpcException ex)
{
return(ResultWrapper <UInt256?> .Fail(ex.Message, ex.ErrorType, null));
}
if (header == null)
{
return(ResultWrapper <UInt256?> .Fail("Block not found", ErrorType.NotFound, null));
}
Account account = _blockchainBridge.GetAccount(address, header.StateRoot);
return(ResultWrapper <UInt256?> .Success(account?.Nonce ?? 0));
}
private ResultWrapper <Quantity> GetAccountBalance(Address address, Keccak stateRoot)
{
var account = _blockchainBridge.GetAccount(address, stateRoot);
if (account == null)
{
return(ResultWrapper <Quantity> .Fail("Cannot find account", ErrorType.NotFound));
}
return(ResultWrapper <Quantity> .Success(new Quantity(account.Balance)));
}
private ResultWrapper <byte[]> GetAccountStorage(Address address, BigInteger index, Keccak stateRoot)
{
var account = _blockchainBridge.GetAccount(address, stateRoot);
if (account == null)
{
return(ResultWrapper <byte[]> .Success(Bytes.Empty));
}
return(ResultWrapper <byte[]> .Success(_blockchainBridge.GetStorage(address, index, stateRoot)));
}
public Task <ResultWrapper <UInt256?> > eth_getBalance(Address address, BlockParameter blockParameter = null)
{
SearchResult <BlockHeader> searchResult = _blockchainBridge.SearchForHeader(blockParameter);
if (searchResult.IsError)
{
return(Task.FromResult(ResultWrapper <UInt256?> .Fail(searchResult)));
}
BlockHeader header = searchResult.Object;
Account account = _blockchainBridge.GetAccount(address, header.StateRoot);
return(Task.FromResult(ResultWrapper <UInt256?> .Success(account?.Balance ?? UInt256.Zero)));
}
public Task <ResultWrapper <UInt256?> > eth_getBalance(Address address, BlockParameter blockParameter = null)
{
SearchResult <BlockHeader> searchResult = _blockchainBridge.SearchForHeader(blockParameter);
if (searchResult.IsError)
{
return(Task.FromResult(ResultWrapper <UInt256?> .Fail(searchResult)));
}
BlockHeader header = searchResult.Object;
if (!HasStateForBlock(header))
{
return(Task.FromResult(ResultWrapper <UInt256?> .Fail($"No state available for block {header.Hash}", ErrorCodes.ResourceUnavailable)));
}
Account account = _blockchainBridge.GetAccount(address, header.StateRoot);
return(Task.FromResult(ResultWrapper <UInt256?> .Success(account?.Balance ?? UInt256.Zero)));
}
public void Eth_get_balance()
{
IBlockchainBridge bridge = Substitute.For <IBlockchainBridge>();
bridge.FindBlock(Arg.Any <long>()).Returns(Build.A.Block.TestObject);
bridge.GetAccount(Arg.Any <Address>(), Arg.Any <Keccak>()).Returns(Build.A.Account.WithBalance(1.Ether()).TestObject);
bridge.Head.Returns(Build.A.BlockHeader.TestObject);
IEthModule module = new EthModule(NullLogManager.Instance, bridge);
string serialized = RpcTest.TestSerializedRequest(module, "eth_getBalance", TestItem.AddressA.Bytes.ToHexString(true), "0x01");
Assert.AreEqual("{\"id\":\"0x43\",\"jsonrpc\":\"2.0\",\"result\":\"0xde0b6b3a7640000\"}", serialized);
}
public void Setup()
{
_blockchainBridge = Substitute.For <IBlockchainBridge>();
_repository = Substitute.For <IEthRequestRepository>();
_faucetAddress = Address.FromNumber(1);
_maxValue = 1.GWei();
_enabled = true;
_timestamp = new Timestamp();
_logManager = NullLogManager.Instance;
_host = "127.0.0.1";
_address = Address.FromNumber(2);
_value = 1.GWei();
_faucetAccount = Account.TotallyEmpty;
_transactionHash = Keccak.Zero;
_blockchainBridge.GetAccount(_faucetAddress).Returns(_faucetAccount);
_blockchainBridge.SendTransaction(Arg.Any <Transaction>()).Returns(_transactionHash);
}
public void Setup()
{
_blockchainBridge = Substitute.For <IBlockchainBridge>();
_repository = Substitute.For <IEthRequestRepository>();
_repository.SumDailyRequestsTotalValueAsync(Arg.Any <DateTime>()).ReturnsForAnyArgs(UInt256.Zero);
_faucetAddress = Address.FromNumber(1);
_maxValue = 1.Ether();
_dailyRequestsTotalValueEth = 500;
_enabled = true;
_timestamper = new Timestamper();
_logManager = LimboLogs.Instance;
_host = "127.0.0.1";
_address = Address.FromNumber(2);
_value = 1.Ether();
_faucetAccount = Account.TotallyEmpty;
_transactionHash = Keccak.Zero;
_blockchainBridge.GetAccount(_faucetAddress).Returns(_faucetAccount);
_blockchainBridge.SendTransaction(Arg.Any <Transaction>(), true).Returns(_transactionHash);
}
public async Task <bool> TryRequestEthAsync(string host, Address address, UInt256 value)
{
if (!_enabled)
{
if (_logger.IsInfo)
{
_logger.Info("NDM Faucet is disabled");
}
return(false);
}
if (_faucetAddress is null || _faucetAddress == Address.Zero)
{
if (_logger.IsWarn)
{
_logger.Warn("NDM Faucet address is not set");
}
return(false);
}
if (string.IsNullOrWhiteSpace(host) || address is null || address == Address.Zero ||
_faucetAddress == address || value == 0)
{
if (_logger.IsInfo)
{
_logger.Info("Invalid NDM Faucet ETH request");
}
return(false);
}
if (value > _maxValue)
{
if (_logger.IsInfo)
{
_logger.Info($"ETH request from: {host} has too big value: {value} wei > {_maxValue} wei");
}
return(false);
}
if (_pendingRequests.TryGetValue(host, out _))
{
if (_logger.IsInfo)
{
_logger.Info($"ETH request from: {host} is already being processed.");
}
return(false);
}
if (_logger.IsInfo)
{
_logger.Info($"Received ETH request from: {host}, address: {address}, value: {value} wei");
}
var latestRequest = await _requestRepository.GetLatestAsync(host);
var requestedAt = _timestamp.UtcNow;
if (!(latestRequest is null) && latestRequest.RequestedAt.Date >= requestedAt.Date)
{
if (_logger.IsInfo)
{
_logger.Info($"ETH request from: {host} was already processed today at: {latestRequest.RequestedAt}");
}
return(false);
}
if (!_pendingRequests.TryAdd(host, true))
{
if (_logger.IsWarn)
{
_logger.Warn($"Couldn't start processing ETH request from: {host}");
}
return(false);
}
if (_logger.IsInfo)
{
_logger.Info($"Processing ETH request for: {host}, address: {address}, value: {value} wei");
}
try
{
var faucetAccount = _blockchainBridge.GetAccount(_faucetAddress);
var transaction = new Transaction
{
Value = value,
GasLimit = 21000,
GasPrice = 20.GWei(),
To = address,
SenderAddress = _faucetAddress,
Nonce = faucetAccount?.Nonce ?? 0
};
_blockchainBridge.Sign(transaction);
var transactionHash = _blockchainBridge.SendTransaction(transaction);
if (latestRequest is null)
{
var requestId = Keccak.Compute(Rlp.Encode(Rlp.Encode(host)));
await _requestRepository.AddAsync(new EthRequest(requestId, host, address, value, requestedAt,
transactionHash));
}
else
{
latestRequest.UpdateRequestDate(requestedAt);
await _requestRepository.UpdateAsync(latestRequest);
}
if (_logger.IsInfo)
{
_logger.Info($"ETH request was successfully processed for: {host}, address: {address}, value: {value} wei");
}
return(true);
}
catch (Exception e)
{
if (_logger.IsError)
{
_logger.Error(e.Message, e);
}
return(false);
}
finally
{
_pendingRequests.TryRemove(host, out _);
}
}
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($"NDM Faucet is processing request for: {node}, address: {address}, value: {value} wei.");
}
try
{
var faucetAccount = _blockchainBridge.GetAccount(_faucetAddress);
var transaction = new Transaction
{
Value = value,
GasLimit = 21000,
GasPrice = 20.GWei(),
To = address,
SenderAddress = _faucetAddress,
Nonce = faucetAccount?.Nonce ?? 0
};
_blockchainBridge.Sign(transaction);
var transactionHash = _blockchainBridge.SendTransaction(transaction, true);
if (latestRequest is null)
{
var requestId = Keccak.Compute(Rlp.Encode(Rlp.Encode(node)));
latestRequest = new EthRequest(requestId, node, address, value, requestedAt, transactionHash);
await _requestRepository.AddAsync(latestRequest);
}
else
{
latestRequest.UpdateRequestDetails(address, value, requestedAt, transactionHash);
await _requestRepository.UpdateAsync(latestRequest);
}
if (_logger.IsInfo)
{
_logger.Info($"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 _);
}
}