private async Task ConnectToHandler(TContext context)
{
var handlers = MessageHandlerRegistry.MessageBindings.Where(x => x.MessageType == context.Message.GetType()).ToList();
if (!handlers.Any())
{
throw new NoHandlerFoundException(context.Message.GetType());
}
if (handlers.Count() > 1)
{
throw new MoreThanOneHandlerException(context.Message.GetType());
}
foreach (var x in handlers)
{
var handlerType = x.HandlerType;
var messageType = context.Message.GetType();
var handleMethod = handlerType.GetRuntimeMethods().Single(m =>
{
var result = m.Name == "Handle" && m.IsPublic && m.GetParameters().Any() &&
(m.GetParameters()[0].ParameterType.GenericTypeArguments.Contains(messageType) || m.GetParameters()[0].ParameterType.GenericTypeArguments.First().GetTypeInfo().IsAssignableFrom(messageType.GetTypeInfo()));
return(result);
});
var handler = (_resolver == null) ? Activator.CreateInstance(handlerType) : _resolver.Resolve(handlerType);
var task = (Task)handleMethod.Invoke(handler, new object[] { context });
await task.ConfigureAwait(false);
}
}
private Task <object> ConnectToHandler(TContext context)
{
var handlers =
MessageHandlerRegistry.MessageBindings.Where(
x => x.MessageType == context.Message.GetType()).ToList();
if (!handlers.Any())
{
throw new NoHandlerFoundException(context.Message.GetType());
}
if (handlers.Count() > 1)
{
throw new MoreThanOneHandlerException(context.Message.GetType());
}
var binding = handlers.Single();
var handlerType = binding.HandlerType;
var messageType = context.Message.GetType();
var handleMethods = handlerType.GetRuntimeMethods().Where(m => m.Name == "Handle");
var handleMethod = handleMethods.Single(y =>
{
var parameterTypeIsCorrect = y.GetParameters().Single()
.ParameterType.GenericTypeArguments.First()
.GetTypeInfo()
.IsAssignableFrom(messageType.GetTypeInfo());
return(parameterTypeIsCorrect &&
y.IsPublic &&
((y.CallingConvention & CallingConventions.HasThis) != 0));
});
var handler = (_resolver == null) ? Activator.CreateInstance(handlerType) : _resolver.Resolve(handlerType);
var task = (Task)handleMethod.Invoke(handler, new object[] { context });
var taskType = task.GetType();
var typeInfo = taskType.GetTypeInfo();
var resultProperty = typeInfo.GetDeclaredProperty("Result").GetMethod;
var result = resultProperty.Invoke(task, new object[] { });
return(Task.FromResult(result));
}