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[skip appveyor] Fixed #4: Unhelpful error message when starting a (parallel) flow before Subscribe has finished

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Fixed #12: Flow allows request message without Request attribute
This commit is contained in:
Mark van Renswoude 2019-08-15 17:56:38 +02:00
parent 25c01ee1ed
commit 93fa25c163
1 changed files with 6 additions and 3 deletions
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9
Tapeti.Flow/Default/FlowProvider.cs
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@ -132,12 +132,15 @@ namespace Tapeti.Flow.Default
private static ResponseHandlerInfo GetResponseHandlerInfo(ITapetiConfig config, object request, Delegate responseHandler) private static ResponseHandlerInfo GetResponseHandlerInfo(ITapetiConfig config, object request, Delegate responseHandler)
{ {
var requestAttribute = request.GetType().GetCustomAttribute<RequestAttribute>();
if (requestAttribute?.Response == null)
throw new ArgumentException($"Request message {request.GetType().Name} must be marked with the Request attribute and a valid Response type", nameof(request));
var binding = config.Bindings.ForMethod(responseHandler); var binding = config.Bindings.ForMethod(responseHandler);
if (binding == null) if (binding == null)
throw new ArgumentException("responseHandler must be a registered message handler", nameof(responseHandler)); throw new ArgumentException("responseHandler must be a registered message handler", nameof(responseHandler));
var requestAttribute = request.GetType().GetCustomAttribute<RequestAttribute>(); if (!binding.Accept(requestAttribute.Response))
if (requestAttribute?.Response != null && !binding.Accept(requestAttribute.Response))
throw new ArgumentException($"responseHandler must accept message of type {requestAttribute.Response}", nameof(responseHandler)); throw new ArgumentException($"responseHandler must accept message of type {requestAttribute.Response}", nameof(responseHandler));
var continuationAttribute = binding.Method.GetCustomAttribute<ContinuationAttribute>(); var continuationAttribute = binding.Method.GetCustomAttribute<ContinuationAttribute>();
@ -145,7 +148,7 @@ namespace Tapeti.Flow.Default
throw new ArgumentException("responseHandler must be marked with the Continuation attribute", nameof(responseHandler)); throw new ArgumentException("responseHandler must be marked with the Continuation attribute", nameof(responseHandler));
if (binding.QueueName == null) if (binding.QueueName == null)
throw new ArgumentException("responseHandler must bind to a valid queue", nameof(responseHandler)); throw new ArgumentException("responseHandler is not yet subscribed to a queue, TapetiConnection.Subscribe must be called before starting a flow", nameof(responseHandler));
return new ResponseHandlerInfo return new ResponseHandlerInfo
{ {