/// <summary>
/// Creates a mock object.
/// </summary>
/// <param name="context">The component context.</param>
/// <param name="typedService">The typed service.</param>
/// <returns>
/// The mock object from the repository.
/// </returns>
private object CreateMock(IComponentContext context, IServiceWithType typedService)
{
var specificCreateMethod = this._createMethod.MakeGenericMethod(new[] { typedService.ServiceType });
var mock = (Mock)specificCreateMethod.Invoke(context.Resolve <MockRepository>(), null);
return(mock.Object);
}
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service, Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
IServiceWithType typedService = service as IServiceWithType;
if (typedService == null)
{
return(Enumerable.Empty <IComponentRegistration>());
}
if (!(typedService.ServiceType.IsGenericType && typedService.ServiceType.GetGenericTypeDefinition() == typeof(IEnumerable <>)))
{
return(Enumerable.Empty <IComponentRegistration>());
}
Type elementType = typedService.ServiceType.GetGenericArguments()[0];
Service elementService = typedService.ChangeType(elementType);
Type collectionType = typeof(List <>).MakeGenericType(elementType);
IComponentRegistration registration = RegistrationBuilder.ForDelegate(collectionType, (c, p) =>
{
IEnumerable <IComponentRegistration> registrations = c.ComponentRegistry.RegistrationsFor(elementService);
IEnumerable <Object> elements = registrations.Select(cr => c.ResolveComponent(cr, p));
// get distinct elements by type
Array array = elements.GroupBy(o => o.GetType()).Select(o => o.First()).ToArray();
Array array2 = Array.CreateInstance(elementType, array.Length);
array.CopyTo(array2, 0);
Object collection = Activator.CreateInstance(collectionType, new Object[] { array2 });
return(collection);
}).As(service)
.CreateRegistration();
return(new IComponentRegistration[] { registration });
}
private static IEnumerable<IComponentRegistration> AdaptFactories(Type from, Type to,
IServiceWithType requestedService, Func<AutofacService, IEnumerable<IComponentRegistration>> registrationAccessor)
{
Guard.NotNull("from", from);
Guard.NotNull("to", to);
Guard.NotNull("requestedService", requestedService);
Guard.NotNull("registrationAccessor", registrationAccessor);
var factoryService = new OpenGenericLooselyNamedService(String.Empty, from);
return registrationAccessor(factoryService)
.Select(r =>
{
var targetService = r.Services.OfType<OpenGenericLooselyNamedService>().First(s => factoryService.Equals(s));
return new ComponentRegistration(
Guid.NewGuid(),
new DelegateActivator(
requestedService.ServiceType,
(c, p) => Activator.CreateInstance(
// Since we looked up factory interfaces only (from argument) - generic argument of s.ServiceType will be the type of configuration
to.MakeGenericType(targetService.ServiceType.GetGenericArguments()[0]),
c.ResolveComponent(r, Enumerable.Empty<Parameter>()), GetDisplayName(r.Metadata, targetService.Name))
),
new CurrentScopeLifetime(),
InstanceSharing.None,
InstanceOwnership.ExternallyOwned,
new AutofacService[] { new LooselyNamedService(targetService.Name, requestedService.ServiceType) },
new Dictionary<string, object>());
});
}
/// <summary>
/// Given a closed generic service (that is being requested), creates a regular delegate callback
/// and associated services from the open generic delegate and services.
/// </summary>
/// <param name="serviceWithType">The closed generic service to bind.</param>
/// <param name="configuredOpenGenericServices">The set of configured open generic services.</param>
/// <param name="openGenericFactory">Delegate responsible for generating an instance of a closed generic based on the open generic type being registered.</param>
/// <param name="constructedFactory">The built closed generic implementation type.</param>
/// <param name="constructedServices">The built closed generic services.</param>
/// <returns>True if the closed generic service can be bound. False otherwise.</returns>
public static bool TryBindOpenGenericDelegateService(
IServiceWithType serviceWithType,
IEnumerable <Service> configuredOpenGenericServices,
Func <IComponentContext, Type[], IEnumerable <Parameter>, object> openGenericFactory,
[NotNullWhen(returnValue: true)] out Func <IComponentContext, IEnumerable <Parameter>, object>?constructedFactory,
[NotNullWhen(returnValue: true)] out Service[]?constructedServices)
{
if (serviceWithType.ServiceType.IsGenericType && !serviceWithType.ServiceType.IsGenericTypeDefinition)
{
var definitionService = (IServiceWithType)serviceWithType.ChangeType(serviceWithType.ServiceType.GetGenericTypeDefinition());
var serviceGenericArguments = serviceWithType.ServiceType.GetGenericArguments();
if (configuredOpenGenericServices.Cast <IServiceWithType>().Any(s => s.Equals(definitionService)))
{
constructedFactory = (ctx, parameters) => openGenericFactory(ctx, serviceGenericArguments, parameters);
var implementedServices = configuredOpenGenericServices
.OfType <IServiceWithType>()
.Where(s => s.ServiceType.GetGenericArguments().Length == serviceGenericArguments.Length)
.Select(s => new { ServiceWithType = s, GenericService = s.ServiceType.MakeGenericType(serviceGenericArguments) })
.Select(p => p.ServiceWithType.ChangeType(p.GenericService))
.ToArray();
constructedServices = implementedServices;
return(true);
}
}
constructedFactory = null;
constructedServices = null;
return(false);
}
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service, Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
if (service == null)
{
throw new ArgumentNullException("service");
}
if (registrationAccessor == null)
{
throw new ArgumentNullException("registrationAccessor");
}
IServiceWithType ts = service as IServiceWithType;
if ((ts == null) || !ts.ServiceType.IsGenericTypeDefinedBy(typeof(Owned <>)))
{
return(Enumerable.Empty <IComponentRegistration>());
}
Type newType = ts.ServiceType.GetGenericArguments()[0];
Service ownedInstanceService = ts.ChangeType(newType);
return(from r in registrationAccessor(ownedInstanceService) select RegistrationBuilder.ForDelegate(ts.ServiceType, delegate(IComponentContext c, IEnumerable <Parameter> p) {
object obj3;
ILifetimeScope scope = c.Resolve <ILifetimeScope>().BeginLifetimeScope(ownedInstanceService);
try
{
object obj2 = scope.ResolveComponent(r, p);
obj3 = Activator.CreateInstance(ts.ServiceType, new object[] { obj2, scope });
}
catch
{
scope.Dispose();
throw;
}
return obj3;
}).ExternallyOwned().As(new Service[] { service }).Targeting <object, SimpleActivatorData, SingleRegistrationStyle>(r).CreateRegistration <object, SimpleActivatorData, SingleRegistrationStyle>());
}
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service, Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
if (service == null)
{
throw new ArgumentNullException("service");
}
if (registrationAccessor == null)
{
throw new ArgumentNullException("registrationAccessor");
}
// service must be typed
IServiceWithType ts = service as IServiceWithType;
// if service not typed or not(ts is generic and generic type definition is of type IEntityRepository
if (ts == null || !(ts.ServiceType.IsGenericType && ts.ServiceType.GetGenericTypeDefinition() == typeof(IEntityRepository <>)))
//if (ts == null || !(ts.ServiceType.IsGenericType && ts.ServiceType.GetGenericTypeDefinition() == typeof(IEntityRepository)))
{
yield break;
}
yield return(RegistrationBuilder.ForType(ts.ServiceType)
.AsSelf()
.WithParameter(new NamedParameter("databaseName", "test"))
.WithParameter(new NamedParameter("serverName", "test2"))
.CreateRegistration());
}
private static IEnumerable <IComponentRegistration> AdaptFactories(Type from, Type to,
IServiceWithType requestedService, Func <AutofacService, IEnumerable <IComponentRegistration> > registrationAccessor)
{
Guard.NotNull("from", from);
Guard.NotNull("to", to);
Guard.NotNull("requestedService", requestedService);
Guard.NotNull("registrationAccessor", registrationAccessor);
var factoryService = new OpenGenericLooselyNamedService(String.Empty, from);
return(registrationAccessor(factoryService)
.Select(r =>
{
var targetService = r.Services.OfType <OpenGenericLooselyNamedService>().First(s => factoryService.Equals(s));
return new ComponentRegistration(
Guid.NewGuid(),
new DelegateActivator(
requestedService.ServiceType,
(c, p) => Activator.CreateInstance(
// Since we looked up factory interfaces only (from argument) - generic argument of s.ServiceType will be the type of configuration
to.MakeGenericType(targetService.ServiceType.GetGenericArguments()[0]),
c.ResolveComponent(r, Enumerable.Empty <Parameter>()), GetDisplayName(r.Metadata, targetService.Name))
),
new CurrentScopeLifetime(),
InstanceSharing.None,
InstanceOwnership.ExternallyOwned,
new AutofacService[] { new LooselyNamedService(targetService.Name, requestedService.ServiceType) },
new Dictionary <string, object>());
}));
}
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service, Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
Func <IComponentRegistration, IComponentRegistration> selector = null;
if (service == null)
{
throw new ArgumentNullException("service");
}
if (registrationAccessor == null)
{
throw new ArgumentNullException("registrationAccessor");
}
IServiceWithType ts = service as IServiceWithType;
if ((ts == null) || !ts.ServiceType.IsDelegate())
{
return(Enumerable.Empty <IComponentRegistration>());
}
Type newType = ts.ServiceType.FunctionReturnType();
Service arg = ts.ChangeType(newType);
if (selector == null)
{
selector = r => RegistrationBuilder.ForDelegate(ts.ServiceType, new Func <IComponentContext, IEnumerable <Parameter>, object>(new FactoryGenerator(ts.ServiceType, r, ParameterMapping.Adaptive).GenerateFactory)).InstancePerLifetimeScope().ExternallyOwned().As(new Service[] { service }).Targeting <object, SimpleActivatorData, SingleRegistrationStyle>(r).CreateRegistration <object, SimpleActivatorData, SingleRegistrationStyle>();
}
return(registrationAccessor(arg).Select <IComponentRegistration, IComponentRegistration>(selector));
}
private static bool IsIEnumerable(IServiceWithType typedService)
{
// We handle most generics, but we don't handle IEnumerable because that has special
// meaning in Autofac
return(typedService.ServiceType.GetTypeInfo().IsGenericType&&
typedService.ServiceType.GetTypeInfo().GetGenericTypeDefinition() == typeof(IEnumerable <>));
}
private bool CanMockService(IServiceWithType typedService)
{
return(!_createdServiceTypes.Contains(typedService.ServiceType) &&
ServiceIsAbstractOrNonSealedOrInterface(typedService) &&
!IsIEnumerable(typedService) &&
!IsIStartable(typedService));
}
public ComponentRegistration RegistrationFor(Service service)
{
var swt = service as IServiceWithType;
if (swt == null)
{
return(null);
}
Type resolutionType = swt.ServiceType;
if (!resolutionType.IsGenericType || !resolutionType.IsConstructedGenericType)
{
return(null);
}
IServiceWithType openGenericService = swt.ChangeType(resolutionType.GetGenericTypeDefinition());
if (!openGenericService.Equals(genericService))
{
return(null);
}
Type constructedImplementorType =
implementorType.MakeGenericType(resolutionType.GenericTypeArguments);
return(new ComponentRegistration(
service,
new ReflectiveActivator(constructedImplementorType)));
}
public void TestAutofacRegistrations()
{
IContainer container = ServicesContainer.Container;
IEnumerable <IServiceWithType> autofacServices = container.ComponentRegistry.Registrations.SelectMany(x => x.Services).OfType <IServiceWithType>();
foreach (IServiceWithType svc in autofacServices)
{
Console.WriteLine("Resolving registration: '{0}'", svc);
IServiceWithType serviceWithType = svc;
Assert.DoesNotThrow(() =>
{
KeyedService keyedService = serviceWithType as KeyedService;
var resolvedService = keyedService != null ? container.ResolveKeyed(keyedService.ServiceKey, serviceWithType.ServiceType) : container.Resolve(serviceWithType.ServiceType);
if (resolvedService == null)
{
throw new Exception("Autofac service not found: " + serviceWithType.ServiceType.Name);
}
},
$"Failed to resolve autofac service '{serviceWithType}' or one of it's dependencies"
);
}
}
/// <summary>
/// Gets the display name for a service that should be used in a graph.
/// </summary>
/// <param name="service">The service for which a display name should be retrieved.</param>
/// <returns>A <see cref="string"/> with a human-readable, pretty-printed display name for use in a graph node or label.</returns>
public static string GraphDisplayName(this Service service)
{
return(service switch
{
IServiceWithType swt => swt.ServiceType.CSharpName(),
_ => service.Description
});
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service,
Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
IServiceWithType serviceWithType = service as IServiceWithType;
if (serviceWithType == null || !serviceWithType.ServiceType.IsGenericType)
{
yield break;
}
if (serviceWithType.ServiceType.GetGenericTypeDefinition() != typeof(Func <>))
{
yield break;
}
Type elementType = serviceWithType.ServiceType.GetGenericArguments()[0];
Type fixedFactoryType = typeof(FixedFactory <>).MakeGenericType(elementType);
Service fixedFactoryService = serviceWithType.ChangeType(fixedFactoryType);
MethodInfo getInstanceMethod = typeof(FixedFactory <>).MakeGenericType(elementType).GetMethod("GetInstance");
foreach (IComponentRegistration registration in registrationAccessor(fixedFactoryService))
{
yield return(RegistrationBuilder.ForDelegate(typeof(Func <>).MakeGenericType(elementType), (c, p) =>
{
// /!\ disposal of this object is not managed
Object fixedFactory = c.ResolveComponent(registration, p);
return getInstanceMethod.CreateDelegate(typeof(Func <>)
.MakeGenericType(elementType), fixedFactory);
})
.As(service)
.Targeting(registration)
.CreateRegistration());
}
}
private static Type GetLazyType(IServiceWithType serviceWithType)
{
return(serviceWithType != null &&
serviceWithType.ServiceType.GetTypeInfo().IsGenericType &&
serviceWithType.ServiceType.GetGenericTypeDefinition().FullName == "System.Lazy`2"
? serviceWithType.ServiceType.GetGenericTypeDefinition()
: null);
}
private static bool ServiceIsAbstractOrNonSealedOrInterface(IServiceWithType typedService)
{
var serverTypeInfo = typedService.ServiceType.GetTypeInfo();
return(serverTypeInfo.IsInterface ||
serverTypeInfo.IsAbstract ||
(serverTypeInfo.IsClass && !serverTypeInfo.IsSealed));
}
private static bool IsMeta(IServiceWithType typedService)
{
// We handle most generics, but we don't handle Meta because that has special
// meaning in Autofac
var typeInfo = typedService.ServiceType.GetTypeInfo();
return(typeInfo.IsGenericType && typeInfo.GetGenericTypeDefinition() == typeof(Meta <>));
}
static void AssertInstancePerOwnedResolvesToOwnedScope(Owned<MessageHandler> owned, IServiceWithType tag)
{
var handler = owned.Value;
var dependentService = handler.DependentService;
Assert.Equal(tag, handler.LifetimeScope.Tag);
Assert.Same(handler.LifetimeScope, dependentService.LifetimeScope);
}
/// <summary>
/// Construct an <see cref="OpenGenericDecoratorActivatorData"/>.
/// </summary>
/// <param name="implementor">The decorator type.</param>
/// <param name="fromService">The open generic service type to decorate.</param>
public OpenGenericDecoratorActivatorData(Type implementor, IServiceWithType fromService)
: base(implementor)
{
if (fromService == null) throw new ArgumentNullException("fromService");
if (!fromService.ServiceType.IsGenericTypeDefinition)
throw new ArgumentException(string.Format("The service '{0}' is not an open generic type.", fromService));
_fromService = fromService;
}
/// <summary>
/// Construct an <see cref="OpenGenericDecoratorActivatorData"/>.
/// </summary>
/// <param name="implementor">The decorator type.</param>
/// <param name="fromService">The open generic service type to decorate.</param>
public OpenGenericDecoratorActivatorData(Type implementor, IServiceWithType fromService)
: base(implementor)
{
if (fromService == null) throw new ArgumentNullException("fromService");
if (!fromService.ServiceType.IsGenericTypeDefinition)
throw new ArgumentException(string.Format(OpenGenericDecoratorActivatorDataResources.DecoratedServiceIsNotOpenGeneric, fromService));
_fromService = fromService;
}
private bool ShouldMockService(IServiceWithType typedService)
{
return(!IsIEnumerable(typedService) &&
!IsIStartable(typedService) &&
!IsInsideAutofac(typedService) &&
!IsLazy(typedService) &&
!IsOwned(typedService) &&
!IsMeta(typedService));
}
/// <summary>
/// Construct an <see cref="OpenGenericDecoratorActivatorData"/>.
/// </summary>
/// <param name="implementer">The decorator type.</param>
/// <param name="fromService">The open generic service type to decorate.</param>
public OpenGenericDecoratorActivatorData(Type implementer, IServiceWithType fromService)
: base(implementer)
{
if (fromService == null) throw new ArgumentNullException(nameof(fromService));
if (!fromService.ServiceType.GetTypeInfo().IsGenericTypeDefinition)
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, OpenGenericDecoratorActivatorDataResources.DecoratedServiceIsNotOpenGeneric, fromService));
FromService = fromService;
}
public DecoratorComponentRegistry(IComponentRegistry inner, IServiceWithType service)
{
_inner = inner;
_service = service;
if (!inner.Properties.TryGetValue(KeysHolder, out var val) || !(val is Dictionary <IServiceWithType, object> keyBucket))
{
_keyBucket = new Dictionary <IServiceWithType, object>();
inner.Properties[KeysHolder] = _keyBucket;
}
public IComponentRegistration CreateFilteredRegistration <T>(IServiceWithType serviceWithType)
{
return(RegistrationBuilder.ForDelegate((cc, p) => cc.ComponentRegistry
.RegistrationsFor(serviceWithType.ChangeType(typeof(T)))
.Where(r => !r.Activator.LimitType.GetCustomAttributes(typeof(ContractClassForAttribute), false).Any())
.Select(r => r.Activator.ActivateInstance(cc, p))
.Cast <T>())
.As((Service)serviceWithType)
.CreateRegistration());
}
private static bool ServiceCompatibleWithAutomaticDirectRegistration(IServiceWithType typedService)
{
var serviceType = typedService.ServiceType;
return(serviceType.IsClass &&
serviceType != typeof(string) &&
!serviceType.IsSubclassOf(typeof(Delegate)) &&
!serviceType.IsAbstract &&
!serviceType.IsGenericTypeDefinition);
}
public OpenGenericRegistrationSource(
IServiceWithType genericService,
Type implementorType,
IComponentLifetime lifetime,
InstanceSharing sharing)
{
this.genericService = genericService;
this.implementorType = implementorType;
this.lifetime = lifetime;
this.sharing = sharing;
}
private static bool ServiceCompatibleWithMockRepositoryCreate(IServiceWithType typedService)
{
var serverTypeInfo = typedService.ServiceType.GetTypeInfo();
// Issue #15: Ensure there's a zero-parameter ctor or the DynamicProxy under Moq fails.
return(serverTypeInfo.IsInterface ||
serverTypeInfo.IsAbstract ||
(serverTypeInfo.IsClass &&
!serverTypeInfo.IsSealed &&
typedService.ServiceType.GetConstructors().Any(c => c.GetParameters().Length == 0)));
}
public OpenGenericDecoratorActivatorData(Type implementor, IServiceWithType fromService) : base(implementor)
{
if (fromService == null)
{
throw new ArgumentNullException("fromService");
}
if (!fromService.ServiceType.IsGenericTypeDefinition)
{
throw new ArgumentException(string.Format(OpenGenericDecoratorActivatorDataResources.DecoratedServiceIsNotOpenGeneric, fromService));
}
this._fromService = fromService;
}
static Type GetLazyType(IServiceWithType serviceWithType)
{
return(serviceWithType != null
#if !ASPNETCORE50
&& serviceWithType.ServiceType.IsGenericType
#else
&& serviceWithType.ServiceType.GetTypeInfo().IsGenericType
#endif
&& serviceWithType.ServiceType.GetGenericTypeDefinition().FullName == "System.Lazy`2"
? serviceWithType.ServiceType.GetGenericTypeDefinition()
: null);
}
private bool CanMockService(IServiceWithType typedService)
{
// Since we're calling MockRepository.Create<T>() to auto-mock and we don't provide
// parameter support, it means we're limited to only auto-mocking things that can pass
// through Moq / Castle.DynamicProxy without any parameters.
return(!this._createdServiceTypes.Contains(typedService.ServiceType) &&
ServiceCompatibleWithMockRepositoryCreate(typedService) &&
!IsIEnumerable(typedService) &&
!IsIStartable(typedService) &&
!IsLazy(typedService) &&
!IsOwned(typedService) &&
!IsMeta(typedService));
}
/// <inheritdoc />
public IReadOnlyList <IComponentRegistration> DecoratorsFor(IServiceWithType service)
{
if (service == null)
{
throw new ArgumentNullException(nameof(service));
}
return(_decorators.GetOrAdd(service, s =>
RegistrationsFor(new DecoratorService(s.ServiceType))
.Where(r => !r.IsAdapterForIndividualComponent)
.OrderBy(r => r.GetRegistrationOrder())
.ToArray()));
}
/// <summary>
/// Initializes a new instance of the <see cref="OpenGenericDecoratorActivatorData"/> class.
/// </summary>
/// <param name="implementer">The decorator type.</param>
/// <param name="fromService">The open generic service type to decorate.</param>
public OpenGenericDecoratorActivatorData(Type implementer, IServiceWithType fromService)
: base(implementer)
{
if (fromService == null)
{
throw new ArgumentNullException(nameof(fromService));
}
if (!fromService.ServiceType.GetTypeInfo().IsGenericTypeDefinition)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, OpenGenericDecoratorActivatorDataResources.DecoratedServiceIsNotOpenGeneric, fromService));
}
FromService = fromService;
}
/// <summary>
/// Construct an <see cref="OpenGenericDecoratorActivatorData"/>.
/// </summary>
/// <param name="implementor">The decorator type.</param>
/// <param name="fromService">The open generic service type to decorate.</param>
public OpenGenericDecoratorActivatorData(Type implementor, IServiceWithType fromService)
: base(implementor)
{
if (fromService == null)
{
throw new ArgumentNullException("fromService");
}
if (!fromService.ServiceType.IsGenericTypeDefinition)
{
throw new ArgumentException(string.Format("The service '{0}' is not an open generic type.", fromService));
}
_fromService = fromService;
}
public IEnumerable <IComponentRegistration> RegistrationsFor(Service service, Func <Service, IEnumerable <IComponentRegistration> > registrationAccessor)
{
IServiceWithType type = service as IServiceWithType;
if ((type == null) || !type.ServiceType.IsGenericTypeDefinedBy(typeof(Meta <>)))
{
return(Enumerable.Empty <IComponentRegistration>());
}
Type newType = type.ServiceType.GetGenericArguments()[0];
Service arg = type.ChangeType(newType);
MethodInfo registrationCreator = CreateMetaRegistrationMethod.MakeGenericMethod(new Type[] { newType });
return((from v in registrationAccessor(arg) select registrationCreator.Invoke(null, new object[] { service, v })).Cast <IComponentRegistration>());
}
private static TypedService GetService(IServiceWithType service)
{
if (service is AutofacKeyedService)
{
return(new KeyedService
{
Key = ((AutofacKeyedService)service).ServiceKey,
Type = ((AutofacKeyedService)service).ServiceType
});
}
return(new TypedService {
Type = service.ServiceType
});
}
private static TypedService GetService(IServiceWithType service)
{
if (service is AutofacKeyedService)
{
return new KeyedService
{
Key = ((AutofacKeyedService)service).ServiceKey,
Type = ((AutofacKeyedService)service).ServiceType
};
}
return new TypedService { Type = service.ServiceType };
}
