public PipelineBuilder WithBehavior(Type behaviorType)
{
if (!behaviorType.GetTypeInfo().ImplementedInterfaces.Any(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(ICommandBehavior <>)))
{
throw new ArgumentException($"The supplied type must implement {typeof(ICommandBehavior<>).Name}", nameof(behaviorType));
}
if (behaviorType.IsGenericTypeDefinition)
{
_services.Scan(s =>
s.FromAssemblies(behaviorType.GetTypeInfo().Assembly)
.AddClasses(c => c.AssignableTo(behaviorType))
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ImplementationType))
.AsImplementedInterfaces()
.WithTransientLifetime());
}
else
{
var behaviorCommandType = behaviorType.GetGenericArguments().SingleOrDefault();
var closedCommandBehaviorInterface = typeof(ICommandBehavior <>).MakeGenericType(behaviorCommandType);
_services.Replace(ServiceDescriptor.Transient(closedCommandBehaviorInterface, behaviorType));
}
return(this);
}
internal static IServiceCollection AddCommandHandlers(this IServiceCollection services, IEnumerable <Assembly> assemblies)
{
services.Scan(s =>
s.FromAssemblies(assemblies)
.AddClasses(c => c.AssignableTo(typeof(IMessageHandler <>))
.Where(handler => IsValidMessageHandler(handler, typeof(ICommand))))
.UsingRegistrationStrategy(RegistrationStrategy.Replace())
.AsImplementedInterfaces()
.WithTransientLifetime());
return(services);
}
public void UsingRegistrationStrategy_ReplaceServiceTypes()
{
Collection.Scan(scan => scan
.FromAssemblyOf <ITransientService>()
.AddClasses(classes => classes.AssignableTo <ITransientService>())
.AsImplementedInterfaces()
.WithTransientLifetime()
.AddClasses(classes => classes.AssignableTo <ITransientService>())
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ServiceType))
.AsImplementedInterfaces()
.WithSingletonLifetime());
var services = Collection.GetDescriptors <ITransientService>();
Assert.Equal(1, services.Count(x => x.ServiceType == typeof(ITransientService)));
}
public static ActivityDefinitionList Discover(
this ActivityDefinitionList list,
Action <ITypeSourceSelector> selector)
{
var typeSourceSelector = new TypeSourceSelector();
selector(typeSourceSelector);
var serviceCollection = new ServiceCollection();
typeSourceSelector.Populate(serviceCollection, RegistrationStrategy.Replace(ReplacementBehavior.All));
foreach (var service in serviceCollection)
{
list.Add(ActivityDescriber.Describe(service.ImplementationType));
}
return(list);
}
public static IServiceCollection AddServiceModule(this IServiceCollection services)
{
services.Scan(scan => scan
.FromAssembliesOf(typeof(ServicesInterfacesAssemblyHelper), typeof(ServicesClassesAssemblyHelper))
// Find services and register its matching interfaces/implementations.
// For example: JobService matches IJobService, EmployeeService matches IEmployeeService, etc...
.AddClasses(classes => classes.InNamespaces(ServicesClassesAssemblyHelper.Namespace))
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ServiceType))
.AsMatchingInterface()
.WithScopedLifetime()
// Now find services with class name ending with 'ExtendedService' and register it to interfaces
// it implements.
// For example: if JobExtendedService class is present and implements IJobService, then register
// it as the implementation for IJobService, replacing the generated service class (JobService).
.AddClasses(classes => classes.Where(type => type.Namespace.Equals(ServicesClassesAssemblyHelper.Namespace) &&
type.Name.EndsWith("ExtendedService")))
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ServiceType))
.AsImplementedInterfaces()
.WithScopedLifetime()
);
return(services);
}
public static IServiceCollection RegisterBehaviorForAllCommands(this IServiceCollection services, Type openGenericBehaviorType)
{
_ = openGenericBehaviorType ?? throw new ArgumentNullException(nameof(openGenericBehaviorType), "A non-null command behavior type is required");
if (!openGenericBehaviorType.IsGenericTypeDefinition)
{
throw new ArgumentException($"An open generic behavior type is required, but a closed generic was supplied: '{openGenericBehaviorType.Name}'", nameof(openGenericBehaviorType));
}
if (!openGenericBehaviorType.GetInterfaces().Any(t => t.IsGenericType && t.GetGenericTypeDefinition() == typeof(ICommandBehavior <>)))
{
throw new ArgumentException($"Generic type definition must be {typeof(ICommandBehavior<>).Name}", nameof(openGenericBehaviorType));
}
services.Scan(s =>
s.FromAssemblies(openGenericBehaviorType.Assembly)
.AddClasses(c => c.AssignableTo(openGenericBehaviorType))
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ImplementationType))
.AsImplementedInterfaces()
.WithTransientLifetime());
return(services);
}
public void Build_ReplacesHandler()
{
// Arrange
var builder = _fixture.GetBuilder();
ValidBuilderSetup(builder);
var expectedService = typeof(IMessageHandler <MessagingBuilderTests>);
var originalLifetime = ServiceLifetime.Singleton;
// Registration expected to be overwriten
builder.Services.Add(ServiceDescriptor.Describe(
expectedService,
s => null,
originalLifetime));
var expectedLifetime = ServiceLifetime.Scoped;
// Act
builder.AddHandlerDiscovery(h =>
{
h.IncludeNonPublic = true;
h.DiscoveredHandlersLifetime = expectedLifetime;
// Configuration to replace any matching service registrations
h.RegistrationStrategy = RegistrationStrategy.Replace(ReplacementBehavior.ServiceType);
});
// Assert
builder.Build();
// Assert
var actualDescriptor = _fixture.ServiceCollection.SingleOrDefault(s => s.ServiceType == expectedService);
Assert.NotNull(actualDescriptor);
Assert.NotEqual(originalLifetime, actualDescriptor.Lifetime);
Assert.Equal(typeof(TestMessageHandler), actualDescriptor.ImplementationType);
}
public static IServiceCollection AddRepositoryModule(this IServiceCollection services)
{
services.AddScoped <IUnitOfWork, UnitOfWork>();
services.Scan(scan => scan
.FromAssembliesOf(typeof(IUnitOfWork), typeof(UnitOfWork))
// Register repository interfaces using the I prefix convention for interfaces to match interface/class
.AddClasses(classes => classes.InNamespaces("blazor.Infrastructure.Data.Repositories"))
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ServiceType))
.AsMatchingInterface()
.WithScopedLifetime()
// Now find repositories that has class name ending with "ExtendedRepository" and register interfaces it implements with priority.
// For example: if JobExtendedRepository class is present and implements IJobRepository interface, take precedence over
// existing registrations.
.AddClasses(classes => classes.Where(type => type.Namespace.Equals("blazor.Infrastructure.Data.Repositories") &&
type.Name.EndsWith("ExtendedRepository")))
.UsingRegistrationStrategy(RegistrationStrategy.Replace(ReplacementBehavior.ServiceType))
.AsImplementedInterfaces()
.WithScopedLifetime()
);
return(services);
}