public override async Task <Reply> Execute(Request request, ServerCallContext callContext)
{
// TODO: read-only stream wrap over a span
// TODO: unsafe byte string
// TODO: error handling?
// TODO: operation context via HTTP headers
// TODO: resource handling here.
Guid operationId = _context.TracingContext.Id;
foreach (var header in callContext.RequestHeaders)
{
if (header.Key.Equals("X-Cache-Operation-Id", StringComparison.OrdinalIgnoreCase))
{
Guid.TryParse(header.Value, out operationId);
break;
}
}
var tracingContext = new Context(operationId, _context.TracingContext.Logger);
var operationContext = new OperationContext(tracingContext, token: callContext.CancellationToken);
return(await operationContext.PerformNonResultOperationAsync(Tracer, async() =>
{
var commandRequest = _serializationPool.Deserialize(request.Request_.ToByteArray(), reader => CommandRequest.Deserialize(reader));
try
{
var commandResponse = await _service.HandleAsync(commandRequest);
var serialized = _serializationPool.Serialize(commandResponse, (value, writer) => value.Serialize(writer));
return new Reply()
{
Reply_ = Google.Protobuf.ByteString.CopyFrom(serialized),
};
}
catch (Exception e)
{
// TODO: do this properly.
throw new RpcException(new Status(StatusCode.Internal, detail: e.ToString()), message: "Internal server error");
}
}, traceErrorsOnly : true));
}