public void MessageHandler(IMessage message, IServiceProvider serviceProvider)
{
var logContext = $"{nameof(MessageHandler)} on {_dispatcherContext}, MessageId={message.Id}";
_logger.LogDebug($"+{logContext}");
string aggregateType = message.GetRequiredHeader(EventMessageHeaders.AggregateType);
DomainEventHandler handler = _domainEventHandlers.FindTargetMethod(message, _eventTypeNamingStrategy);
if (handler == null)
{
_logger.LogDebug($"{logContext}: No handler found for type='{aggregateType}'");
return;
}
var param = (IDomainEvent)JsonMapper.FromJson(message.Payload, handler.EventType);
Type envelopeType = typeof(DomainEventEnvelope <>).MakeGenericType(handler.EventType);
var envelope = (IDomainEventEnvelope <IDomainEvent>)Activator.CreateInstance(envelopeType,
message,
aggregateType,
message.GetRequiredHeader(EventMessageHeaders.AggregateId),
message.GetRequiredHeader(MessageHeaders.Id),
param);
handler.Invoke(envelope, serviceProvider);
_logger.LogDebug($"-{logContext}: Processed message of type='{aggregateType}'");
}
private IMessage ToMessage(ConsumeResult <string, string> record)
{
return(JsonMapper.FromJson <Message>(record.Value));
}