public async Task <SmartContractFunctionResponse> ExecuteFunctionAsync(SmartContractFunctionRequest request)
{
Guard.NotNull(request, nameof(request));
var web3 = GetWeb3(request.CallerPrivateKey, request.Endpoint);
string abi = await GetContractABIAsync(request);
var contract = web3.Eth.GetContract(abi, request.ContractAddress);
var function = contract.GetFunction(request.FunctionName);
object[] functionParameters = request.FunctionParameters ?? new object[0];
HexBigInteger gas = await function.EstimateGasAsync(request.FromAddress, null, null, functionParameters);
var receipt = await SendTransactionAsync(web3, request.FromAddress, function, functionParameters, gas);
return(new SmartContractFunctionResponse
{
GasEstimated = (ulong)gas.Value,
GasUsed = receipt != null ? (ulong?)receipt.GasUsed.Value : null,
Response = receipt != null,
TransactionHash = receipt?.TransactionHash
});
}
private async Task <string> GetContractABIAsync(SmartContractFunctionRequest request)
{
string network = GetNetwork(request.Endpoint);
var entity = await _azure.GetSmartContractAsync(network, request.ContractAddress);
return(entity != null ? entity.ABI : request.ContractABI);
}
public async Task <SmartContractFunctionResponse> QueryFunctionAsync(SmartContractFunctionRequest request)
{
Guard.NotNull(request, nameof(request));
var web3 = GetWeb3(request.CallerPrivateKey, request.Endpoint);
string abi = await GetContractABIAsync(request);
var contract = web3.Eth.GetContract(abi, request.ContractAddress);
var function = contract.GetFunction(request.FunctionName);
object[] functionParameters = request.FunctionParameters ?? new object[0];
HexBigInteger gas = await function.EstimateGasAsync(request.FromAddress, null, null, functionParameters);
var result = await function.CallAsync <object>(request.FromAddress, gas, null, functionParameters);
return(new SmartContractFunctionResponse
{
GasEstimated = (ulong)gas.Value,
Response = result
});
}
