AutofacActorExtensions.cs

// This software is part of the Autofac IoC container
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using System;
using Autofac.Builder;
using Microsoft.ServiceFabric.Actors.Runtime;

namespace Autofac.Integration.ServiceFabric
{
    /// <summary>
    /// Extension methods for registering actors with Autofac and Service Fabric.
    /// </summary>
    public static class AutofacActorExtensions
    {
        /// <summary>
        /// Registers an actor service with the container.
        /// </summary>
        /// <param name="builder">The container builder.</param>
        /// <param name="actorServiceType"><see cref="Type"/> of the actor service to create (defaults to <see cref="ActorService"/>).</param>
        /// <param name="stateManagerFactory">A factory method to create <see cref="IActorStateManager"/>.</param>
        /// <param name="stateProvider">State provider to store the state for actor objects.</param>
        /// <param name="settings">/// Settings to configures behavior of Actor Service.</param>
        /// <param name="lifetimeScopeTag">The tag applied to the <see cref="ILifetimeScope"/> in which the actor service is hosted.</param>
        /// <typeparam name="TActor">The type of the actor to register.</typeparam>
        /// <returns>A registration builder allowing further configuration of the component.</returns>
        /// <exception cref="ArgumentException">Thrown when <typeparamref name="TActor"/> is not a valid actor type.</exception>
        /// <remarks>The actor will be wrapped in a dynamic proxy and must be public and not sealed.</remarks>
        public static IRegistrationBuilder<TActor, ConcreteReflectionActivatorData, SingleRegistrationStyle>
            RegisterActor<TActor>(
                this ContainerBuilder builder,
                Type actorServiceType = null,
                Func<ActorBase, IActorStateProvider, IActorStateManager> stateManagerFactory = null,
                IActorStateProvider stateProvider = null,
                ActorServiceSettings settings = null,
                object lifetimeScopeTag = null)
            where TActor : ActorBase
        {
            if (builder == null)
                throw new ArgumentNullException(nameof(builder));

            var actorType = typeof(TActor);

            if (!actorType.CanBeProxied())
                throw new ArgumentException(actorType.GetInvalidProxyTypeErrorMessage());

            if (actorServiceType == null)
                actorServiceType = typeof(ActorService);
            else
                builder.RegisterType(actorServiceType).AsSelf().IfNotRegistered(actorServiceType);

            if (!typeof(ActorService).IsAssignableFrom(actorServiceType))
                throw new ArgumentException(actorServiceType.GetInvalidActorServiceTypeErrorMessage());

            var registration = builder.RegisterServiceWithInterception<TActor, ActorInterceptor>(lifetimeScopeTag);

            registration.EnsureRegistrationIsInstancePerLifetimeScope();

            builder.RegisterBuildCallback(
                l => l.Resolve<IActorFactoryRegistration>().RegisterActorFactory<TActor>(
                    l, actorServiceType, stateManagerFactory, stateProvider, settings, lifetimeScopeTag));

            return registration;
        }
    }
}