/// <summary>
/// Configures dependency resolution to use PocketContainer.
/// </summary>
/// <param name="configuration">The configuration being configured.</param>
/// <param name="container">The container to use to resolve dependencies.</param>
/// <returns>
/// The same <see cref="HttpConfiguration" /> instance.
/// </returns>
public static HttpConfiguration ResolveDependenciesUsing(
this HttpConfiguration configuration,
PocketContainer container)
{
configuration.DependencyResolver = new PocketContainerDependencyResolver(container);
return(configuration);
}
/// <summary>
/// Registers an open generic type to another open generic type, allowing, for example, IService&T& to be registered to resolve to Service&T&.
/// </summary>
/// <param name="container">The container.</param>
/// <param name="variantsOf">The open generic interface that callers will attempt to resolve, e.g. typeof(IService&T&).</param>
/// <param name="to">The open generic type to resolve, e.g. typeof(Service&T&).</param>
/// <param name="singletons">If true, each type will be lazily registered as a singleton.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">
/// Parameter 'variantsOf' is not an open generic type, e.g. typeof(IService&T&)
/// or
/// Parameter 'to' is not an open generic type, e.g. typeof(Service&T&)
/// </exception>
public static PocketContainer RegisterGeneric(this PocketContainer container, Type variantsOf, Type to, bool singletons = false)
{
if (!variantsOf.GetTypeInfo().IsGenericTypeDefinition)
{
throw new ArgumentException("Parameter 'variantsOf' is not an open generic type, e.g. typeof(IService<>)");
}
if (!to.GetTypeInfo().IsGenericTypeDefinition)
{
throw new ArgumentException("Parameter 'to' is not an open generic type, e.g. typeof(Service<>)");
}
return(container.AddStrategy(t =>
{
if (t.GetTypeInfo().IsGenericType&& t.GetGenericTypeDefinition() == variantsOf)
{
var closedGenericType = to.MakeGenericType(t.GetTypeInfo().GenericTypeArguments);
if (singletons)
{
container.TryRegisterSingle(
t,
cc => cc.Resolve(closedGenericType));
}
return c => c.Resolve(closedGenericType);
}
return null;
}));
}
public void UseDependencies_can_be_used_to_set_dependencies_using_an_application_owned_container()
{
var applicationsContainer = new PocketContainer()
.Register<IPaymentService>(_ => new CreditCardPaymentGateway(chargeLimit: 1));
Configuration.Current
.UseDependencies(type =>
{
if (applicationsContainer.Any(reg => reg.Key == type))
{
return () => applicationsContainer.Resolve(type);
}
return null;
});
var order = new Order(new CreateOrder(Any.FullName()))
.Apply(new AddItem
{
Price = 5m,
ProductName = Any.Word()
})
.Apply(new Ship())
.Apply(new ChargeAccount
{
AccountNumber = Any.PositiveInt().ToString()
});
order.Events()
.Last()
.Should()
.BeOfType<Order.PaymentConfirmed>();
}
/// <summary>
/// Configures dependency resolution to use PocketContainer.
/// </summary>
/// <param name="configuration">The configuration being configured.</param>
/// <param name="container">The container to use to resolve dependencies.</param>
/// <returns>
/// The same <see cref="HttpConfiguration" /> instance.
/// </returns>
public static HttpConfiguration ResolveDependenciesUsing(
this HttpConfiguration configuration,
PocketContainer container)
{
configuration.DependencyResolver = new PocketContainerDependencyResolver(container);
return configuration;
}
internal static Func<PocketContainer, object> InMemoryEventSourcedRepositoryStrategy(Type type, PocketContainer container)
{
if (type.IsGenericType &&
(type.GetGenericTypeDefinition() == typeof (IEventSourcedRepository<>) ||
type.GetGenericTypeDefinition() == typeof (InMemoryEventSourcedRepository<>)))
{
var aggregateType = type.GenericTypeArguments.Single();
var repositoryType = typeof (InMemoryEventSourcedRepository<>).MakeGenericType(aggregateType);
var streamName = AggregateType.EventStreamName(aggregateType);
// get the single registered event stream instance
var stream = container.Resolve<ConcurrentDictionary<string, IEventStream>>()
.GetOrAdd(streamName,
name => container.Clone()
.Register(_ => name)
.Resolve<IEventStream>());
return c => Activator.CreateInstance(repositoryType, stream, c.Resolve<IEventBus>());
}
if (type == typeof (IEventStream))
{
return c => c.Resolve<InMemoryEventStream>();
}
return null;
}
private static void AddFactoryToList <T>(
PocketContainer container,
Func <PocketContainer, T> factory)
{
// avoid re-entrancy which would result in a stack overflow
if (recursionCounter.Value != 0)
{
return;
}
try
{
recursionCounter.Value++;
// register IEnumerable<Func<PocketContainer, T>>
container.TryRegister(c => c.Resolve <List <Func <PocketContainer, T> > >()
.Select(f => f(c)));
// register the registration list as a singleton
container.TryRegisterSingle(c => new List <Func <PocketContainer, T> >());
// resolve it and add the factory
var registrations = container.Resolve <List <Func <PocketContainer, T> > >();
registrations.Add(factory);
}
finally
{
recursionCounter.Value--;
}
}
public PocketContainerDependencyResolver(PocketContainer container)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
this.container = container;
}
public PocketContainerDependencyResolver(PocketContainer container)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
this.container = container;
}
private static void Register(
this PocketContainer container,
ServiceDescriptor descriptor)
{
if (descriptor.ImplementationInstance != null)
{
container.RegisterSingle(
descriptor.ServiceType,
c => descriptor.ImplementationInstance);
return;
}
if (descriptor.ImplementationFactory != null)
{
if (descriptor.Lifetime != ServiceLifetime.Singleton)
{
container.Register(
descriptor.ServiceType,
c => descriptor.ImplementationFactory(c));
}
else
{
container.RegisterSingle(
descriptor.ServiceType,
c => descriptor.ImplementationFactory(c));
}
return;
}
if (descriptor.ImplementationType != null)
{
if (descriptor.IsOpenGeneric())
{
container.RegisterGeneric(
variantsOf: descriptor.ServiceType,
to: descriptor.ImplementationType);
}
else if (descriptor.ServiceType == descriptor.ImplementationType)
{
// no need to register it
}
else
{
if (descriptor.Lifetime != ServiceLifetime.Singleton)
{
container.Register(
descriptor.ServiceType,
c => c.Resolve(descriptor.ImplementationType));
}
else
{
container.RegisterSingle(
descriptor.ServiceType,
c => c.Resolve(descriptor.ImplementationType));
}
}
}
}
/// <summary>
/// Clones the container, allowing for selectively overriding registrations without affecting the state of the original container.
/// </summary>
public PocketContainer Clone()
{
var clone = new PocketContainer
{
resolvers = new ConcurrentDictionary<Type, Func<PocketContainer, object>>(resolvers),
strategyChain = strategyChain
};
return clone;
}
public void ConfigureApplication(IAppBuilder app)
{
var config = new HttpConfiguration();
var pocket = new PocketContainer();
config.ResolveDependenciesUsing(pocket);
pocket.Register(c => thisServersNode);
config.MapHttpAttributeRoutes();
app.UseWebApi(config);
}
/// <summary>
/// Clones the container, allowing for selectively overriding registrations without affecting the state of the original container.
/// </summary>
public PocketContainer Clone()
{
var clone = new PocketContainer
{
resolvers = new ConcurrentDictionary <Type, Func <PocketContainer, object> >(resolvers),
strategyChain = strategyChain
};
return(clone);
}
public static PocketContainer AccumulateRegistrations(
this PocketContainer container)
{
container.Registering += (type, resolver) =>
{
AddFactoryToList(container, (dynamic)resolver);
return(resolver);
};
return(container);
}
public AfterResolvePipeline(
PocketContainer container,
Func <PocketContainer, object> originalResolver)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
this.container = container;
originalRegistration = originalResolver;
}
public AfterResolvePipeline(
PocketContainer container,
Func <PocketContainer, object> originalResolver)
{
this.container = container ?? throw new ArgumentNullException(nameof(container));
if (originalResolver != null)
{
InnerResolver = Resolve;
T Resolve(PocketContainer c) => (T)originalResolver(c);
}
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
var container = new PocketContainer();
GlobalConfiguration.Configuration
.ResolveDependenciesUsing(container);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
MvcRouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
public static PocketContainer IncludeDependencyResolver(
this PocketContainer container,
IDependencyResolver dependencyResolver)
{
return(container.AddStrategy(type =>
{
if (dependencyResolver.GetService(type) != null)
{
return c => dependencyResolver.GetService(type);
}
return null;
}));
}
public ServiceScope(PocketContainer container)
{
originalContainer = container ??
throw new ArgumentNullException(nameof(container));
clonedContainer = container.Clone();
clonedContainer.AfterResolve += RegisterTransientsForDisposal;
disposables = new CompositeDisposable
{
() => clonedContainer.AfterResolve -= RegisterTransientsForDisposal,
() => isDisposed = true
};
}
internal static Func<PocketContainer, object> InMemoryEventSourcedRepositoryStrategy(Type type, PocketContainer container)
{
if (type.IsGenericType &&
(type.GetGenericTypeDefinition() == typeof (IEventSourcedRepository<>) ||
type.GetGenericTypeDefinition() == typeof (InMemoryEventSourcedRepository<>)))
{
var aggregateType = type.GenericTypeArguments.Single();
var repositoryType = typeof (InMemoryEventSourcedRepository<>).MakeGenericType(aggregateType);
return c => Activator.CreateInstance(repositoryType,
c.Resolve<InMemoryEventStream>(),
c.Resolve<IEventBus>());
}
return null;
}
public void ConfigureApplication(IAppBuilder app, string nodeId, IObservable<IEnumerable<Peer>> peerObserver)
{
thisServersNode = new Node(new NodeSettings(nodeId,
TimeSpan.FromSeconds(5),
TimeSpan.FromSeconds(1),
peerObserver));
var config = new HttpConfiguration();
var pocket = new PocketContainer();
config.ResolveDependenciesUsing(pocket);
pocket.RegisterSingle(c => thisServersNode);
config.MapHttpAttributeRoutes();
JsonSerialization(config);
app.UseWebApi(config);
thisServersNode.Start();
}
public static IServiceProvider AsServiceProvider(
this PocketContainer container,
IServiceCollection services)
{
foreach (var service in services)
{
Register(container, service);
}
container.RegisterSingle <IServiceProvider>(c => container)
.RegisterSingle <IServiceScopeFactory>(c => new ServiceScopeFactory(c));
container.AfterResolve += container.RegisterSingletonForDisposal;
container.OnFailedResolve = (type, exception) => null;
return(container);
}
public CommandSchedulerResolver(PocketContainer container)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
schedulerResolversByAggregateTypeName = new Dictionary<string, Func<dynamic>>();
Command.KnownTargetTypes.ForEach(aggregateType =>
{
var schedulerType = typeof (ICommandScheduler<>).MakeGenericType(aggregateType);
schedulerResolversByAggregateTypeName.Add(
AggregateType.EventStreamName(aggregateType),
() => container.Resolve(schedulerType));
});
}
public void Configuration_can_specify_a_dependency_resolver_which_is_then_used_when_resolving_handlers()
{
var container = new PocketContainer();
container.Register(c => "hello");
var configuration = new Configuration()
.UseInMemoryEventStore()
.UseDependency(resolve: resolve => (IEventBus) resolve(typeof (EventBusWithDependencies)))
.UseDependency<IEnumerable<string>>(_ => new[] { "hello" });
var bus = configuration.EventBus;
bus.Should().BeOfType<EventBusWithDependencies>();
var busWithDependencies = bus as EventBusWithDependencies;
busWithDependencies.StringValues.Single().Should().Be("hello");
}
public static PocketContainer AutoMockInterfacesAndAbstractClasses(
this PocketContainer container)
{
return(container.AddStrategy(type =>
{
if (type.IsInterface || type.IsAbstract)
{
var moqType = typeof(Mock <>).MakeGenericType(type);
return c =>
{
var mock = Activator.CreateInstance(moqType) as Mock;
mock.DefaultValue = DefaultValue.Mock;
return ((dynamic)mock).Object;
};
}
return null;
}));
}
public static PocketContainer IfOnlyOneImplementationUseIt(
this PocketContainer container)
{
return(container.AddStrategy(type =>
{
if (type.IsInterface || type.IsAbstract)
{
var implementations = Discover.ConcreteTypes()
.DerivedFrom(type)
.ToArray();
if (implementations.Count() == 1)
{
return c => c.Resolve(implementations.Single());
}
}
return null;
}));
}
/// <summary>
/// Clones the container, allowing for selectively overriding registrations.
/// </summary>
public PocketContainer CreateOverrideContainer()
{
var fallback = this;
var child = new PocketContainer
{
resolvers = new ConcurrentDictionary<Type, Func<PocketContainer, object>>(resolvers),
strategyChain = strategyChain
};
return child.AddStrategy(t =>
{
// if the parent already has a registation, use it
Func<PocketContainer, object> resolver;
if (fallback.resolvers.TryGetValue(t, out resolver))
{
return resolver;
}
return null;
});
}
/// <summary>
/// Clones the container, allowing for selectively overriding registrations.
/// </summary>
public PocketContainer CreateOverrideContainer()
{
var fallback = this;
var child = new PocketContainer
{
resolvers = new ConcurrentDictionary <Type, Func <PocketContainer, object> >(resolvers),
strategyChain = strategyChain
};
return(child.AddStrategy(t =>
{
// if the parent already has a registation, use it
Func <PocketContainer, object> resolver;
if (fallback.resolvers.TryGetValue(t, out resolver))
{
return resolver;
}
return null;
}));
}
/// <summary>
/// Registers an open generic type to another open generic type, allowing, for example, IService&T& to be registered to resolve to Service&T&.
/// </summary>
/// <param name="container">The container.</param>
/// <param name="variantsOf">The open generic interface that callers will attempt to resolve, e.g. typeof(IService&T&).</param>
/// <param name="to">The open generic type to resolve, e.g. typeof(Service&T&).</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">
/// Parameter 'variantsOf' is not an open generic type, e.g. typeof(IService&T&)
/// or
/// Parameter 'to' is not an open generic type, e.g. typeof(Service&T&)
/// </exception>
public static PocketContainer RegisterGeneric(this PocketContainer container, Type variantsOf, Type to)
{
if (!variantsOf.IsGenericTypeDefinition)
{
throw new ArgumentException("Parameter 'variantsOf' is not an open generic type, e.g. typeof(IService<>)");
}
if (!to.IsGenericTypeDefinition)
{
throw new ArgumentException("Parameter 'to' is not an open generic type, e.g. typeof(Service<>)");
}
return(container.AddStrategy(t =>
{
if (t.IsGenericType && t.GetGenericTypeDefinition() == variantsOf)
{
var closedGenericType = to.MakeGenericType(t.GetGenericArguments());
return c => c.Resolve(closedGenericType);
}
return null;
}));
}
/// <summary>
/// Configures a <see cref="PocketContainer" /> to prefer constructors that do not contain primitive types.
/// </summary>
/// <remarks>Primitive types include any type for which <see cref="Type.IsPrimitive" /> is true, as well as <see cref="String" />, <see cref="DateTime" />, and <see cref="DateTimeOffset" />.</remarks>
/// <param name="container">The same container instance.</param>
public static PocketContainer AvoidConstructorsWithPrimitiveTypes(
this PocketContainer container)
{
return(container.AddStrategy(UseLongestConstructorHavingNoPrimitiveTypes));
}
internal static ICommandSchedulerDispatcher[] InitializeSchedulersPerAggregateType(
PocketContainer container,
GetClockName getClockName,
ISubject<ICommandSchedulerActivity> subject)
{
var binders = AggregateType.KnownTypes
.Select(aggregateType =>
{
var initializerType =
typeof (SchedulerInitializer<>).MakeGenericType(aggregateType);
dynamic initializer = container.Resolve(initializerType);
return (ICommandSchedulerDispatcher) initializer.InitializeScheduler(
subject,
container,
getClockName);
})
.ToArray();
return binders;
}
public ServiceScopeFactory(PocketContainer container)
{
this.container = container ??
throw new ArgumentNullException(nameof(container));
}
