// Dispatches the query to the handling consumer.
public async Task <object> Dispatch(IQuery query, IQueryConsumer consumer, CancellationToken cancellationToken)
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
if (consumer == null)
{
throw new ArgumentNullException(nameof(consumer));
}
var taskSource = new TaskCompletionSource <object>();
try
{
if (IsAsync)
{
var invokeParams = new List <object> {
consumer, query
};
if (IsCancellable)
{
invokeParams.Add(cancellationToken);
}
var asyncResult = (Task)Invoker.DynamicInvoke(invokeParams.ToArray());
await asyncResult.ConfigureAwait(false);
object result = ProcessResult(query, asyncResult);
taskSource.SetResult(result);
}
else
{
object syncResult = Invoker.DynamicInvoke(consumer, query);
object result = ProcessResult(query, syncResult);
taskSource.SetResult(result);
}
}
catch (Exception ex)
{
var invokeEx = ex as TargetInvocationException;
var sourceEx = ex;
if (invokeEx != null)
{
sourceEx = invokeEx.InnerException;
}
var dispatchEx = new QueryDispatchException("Exception Dispatching Query to Consumer.",
this,
sourceEx);
taskSource.SetException(dispatchEx);
}
return(await taskSource.Task.ConfigureAwait(false));
}
private void LogQueryDispatch(IQuery query, IQueryConsumer consumer)
{
_logger.LogTraceDetails($"Dispatching Query Type: {query.GetType()} to Consumer: {consumer.GetType()}", query);
}