public static async Task <MethodDescriptor> GetContractMethodDescriptorAsync(
this ITransactionReadOnlyExecutionService transactionReadOnlyExecutionService, IChainContext chainContext,
Address contractAddress, string methodName, bool throwException = true)
{
IEnumerable <FileDescriptor> fileDescriptors;
try
{
fileDescriptors =
await transactionReadOnlyExecutionService.GetFileDescriptorsAsync(chainContext, contractAddress);
}
catch
{
if (throwException)
{
throw new UserFriendlyException(Error.Message[Error.InvalidContractAddress],
Error.InvalidContractAddress.ToString());
}
return(null);
}
return(fileDescriptors
.Select(fileDescriptor =>
fileDescriptor.Services.Select(s => s.FindMethodByName(methodName)).FirstOrDefault())
.FirstOrDefault(method => method != null));
}
private static async Task <IEnumerable <FileDescriptor> > GetFileDescriptorsAsync(Address address)
{
var chain = await _blockchainService.GetChainAsync();
var chainContext = new ChainContext()
{
BlockHash = chain.BestChainHash,
BlockHeight = chain.BestChainHeight
};
return(await _transactionReadOnlyExecutionService.GetFileDescriptorsAsync(chainContext, address));
}
public async Task GetFileDescriptorsAsync_Test()
{
var chain = await _smartContractHelper.CreateChainWithGenesisContractAsync();
var chainContext = new ChainContext
{
BlockHash = chain.BestChainHash,
BlockHeight = chain.BestChainHeight
};
_transactionReadOnlyExecutionService.GetFileDescriptorsAsync(chainContext, SampleAddress.AddressList[0])
.ShouldThrow <SmartContractFindRegistrationException>();
_smartContractExecutiveProvider.GetPool(_defaultContractZeroCodeProvider.ContractZeroAddress).Single()
.ContractHash.ShouldBe(_defaultContractZeroCodeProvider.DefaultContractZeroRegistration.CodeHash);
var fileDescriptors = await _transactionReadOnlyExecutionService.GetFileDescriptorsAsync(chainContext,
_defaultContractZeroCodeProvider.ContractZeroAddress);
fileDescriptors.Count().ShouldBeGreaterThan(0);
_smartContractExecutiveProvider.GetPool(_defaultContractZeroCodeProvider.ContractZeroAddress).Single()
.ContractHash.ShouldBe(_defaultContractZeroCodeProvider.DefaultContractZeroRegistration.CodeHash);
}
