Factory and IOC together - how to use then both?

Question

So I have this application where Im using IOC (autofac). In the mean time I found myself in position where I need a factory. Inside the factory I create new objects that has dependencies - so now I'm wondering, how could I marry these?

public class SubscriptionHandlerFactory : ISubscriptionHandlerFactory
{
    public ISubscriptionHandler GetProvider(StreamType streamType)
    {
        switch (streamType)
        {
            case StreamType.Rss:
                return new RssSubscriptionHandler(null,null,null,null);
            case StreamType.Person:
                return new PersonSubscriptionHandler(null, null, null, null);
            default:
                throw new ArgumentOutOfRangeException(nameof(streamType), streamType, null);
        }
    }
}

Answer 1

You could use named and keyed service and retrieve instances using IIndex<TKey, TService>

Registration could look like this :

builder.RegisterType<RssHandler>().Keyed<ISubscriptionHandler>(StreamType.Rss);
builder.RegisterType<PersonHandler>().Keyed<ISubscriptionHandler>(StreamType.Person);
builder.RegisterType<SubscriptionHandlerFactory>().As<ISubscriptionHandlerFactory>();

and factory like this :

public class SubscriptionHandlerFactory : ISubscriptionHandlerFactory
{
    public SubscriptionHandlerFactory(IIndex<StreamType, ISubscriptionHandler> handlers)
    {
        this._handlers = handlers;
    }

    private readonly IIndex<StreamType, ISubscriptionHandler> _handlers;

    public ISubscriptionHandler GetProvider(StreamType streamType)
    {
        return this._handlers[streamType];
    }
}