private Task InvokeDispatcher(MessageDispatchInfo dispatcher, IMessage message, CancellationToken cancellationToken)
{
if (!_logger.IsEnabled(LogLevel.Trace))
{
_logger.LogDebug(
$"Dispatching message Type: {message.GetType()} to Consumer: { dispatcher.ConsumerType } " +
$"Method: { dispatcher.MessageHandlerMethod.Name} ");
}
var consumer = (IMessageConsumer)_services.GetRequiredService(dispatcher.ConsumerType);
return(dispatcher.Dispatch(message, consumer, cancellationToken));
}
// Determines message dispatchers that apply to the message being published. This is optional and
// specified by decorating the message handler method with attributes.
private async Task <bool> PassesDispatchCriteria(MessageDispatchInfo dispatchInfo, IMessage message)
{
ScriptPredicate predicate = dispatchInfo.Predicate;
// Run a dynamic script against the message and check the result of the specified predicate property.
// This allow storing rule predicates external from the code.
if (predicate != null)
{
return(await _scriptingSrv.SatisfiesPredicateAsync(message, predicate));
}
// Check static rules to determine if message meets criteria.
return(dispatchInfo.IsMatch(message));
}
