private Metadata CreateErrorTrailers(IWantToDoSomething.YouCanNotComeInException youCanNotComeInException)
{
var error = new GiveMeADetailedErrorError()
{
PermissionDenied = new PermissionDeniedError()
{
User = youCanNotComeInException.User,
Reason = youCanNotComeInException.Reason
}
};
var metaData = grpcExceptionHandler.CreateTrailer(error);
return(metaData);
}
static async Task Main(string[] args)
{
AppContext.SetSwitch("System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport", true);
IConfigurationRoot configuration = ReadConfiguration();
var serverUrl = GetServerUrl(configuration);
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
CancellationToken token = cancellationTokenSource.Token;
CancelApplication(cancellationTokenSource);
var channel = GrpcChannel.ForAddress(new Uri(serverUrl), new GrpcChannelOptions()
{
Credentials = ChannelCredentials.Insecure
});
Errors.ErrorService.ErrorServiceClient client = new Errors.ErrorService.ErrorServiceClient(channel);
try
{
await client.IDoNotHandleErrorCorrectlyAsync(new ErrorRequest());
}
catch (RpcException rpcException)
{
Console.WriteLine($"{rpcException.Status}");
Console.WriteLine($"Not really useful right?");
Console.WriteLine();
}
try
{
await client.IDoNotLogRpcExceptionCorrectlyAsync(new ErrorRequest());
}
catch (RpcException rpcException)
{
Console.WriteLine($"{rpcException.Status}");
Console.WriteLine("Better.. but not what us really helps right? Also check the missing server logs.");
Console.WriteLine();
}
try
{
await client.GiveMeADetailedUnhandledExceptionAsync(new ErrorRequest());
}
catch (RpcException rpcException)
{
Console.WriteLine($"{rpcException.Status}");
Console.WriteLine($"Same but now it is logged on server side correctly. And with the error id we can check the logs.");
Console.WriteLine();
}
try
{
await client.GiveMeADetailedErrorAsync(new GiveMeADetailedErrorRequest());
}
catch (RpcException rpcException)
{
Console.WriteLine($"{rpcException.Status}");
Console.WriteLine($"Looks the same right?");
var detailedErrorEntry = rpcException.Trailers.FirstOrDefault(e => e.Key == $"{nameof(GiveMeADetailedErrorError).ToLower()}-bin");
if (detailedErrorEntry != null)
{
Console.WriteLine($"But lets take look at the trailing metadata.");
GiveMeADetailedErrorError detailError = GiveMeADetailedErrorError.Parser.ParseFrom(detailedErrorEntry.ValueBytes);
Console.WriteLine($"Error: {detailError.ErrorCase}.");
switch (detailError.ErrorCase)
{
case GiveMeADetailedErrorError.ErrorOneofCase.None:
return;
case GiveMeADetailedErrorError.ErrorOneofCase.PermissionDenied:
Console.WriteLine($"User: {detailError.PermissionDenied.User} Reason: {detailError.PermissionDenied.Reason}");
return;
default:
throw new InvalidOperationException($"{detailError.ErrorCase} is not supported.");
}
}
else
{
Console.WriteLine("No detailed error in trailing metadata found.");
}
}
}