IL.AttributeBasedDI 1.2.0

IL.AttributeBasedDI

Control dependencies and decorators via custom attributes - extends Microsoft.Extensions.DependencyInjection

How to use

• Simply reference IL.AttributeBasedDI in your project
• Use registration extensions coming with library to activate functionality: (IServiceCollection)services.AddServiceAttributeBasedDependencyInjection() or (WebApplicationBuilder)builder.AddServiceAttributeBasedDependencyInjection()
  • Allows to filter assemblies reflection search with optional parameter assemblyFilters ("MyProject.*" for example)
• Use [Service] attribute for your classes with optional params for auto registration in DI container:
  • Lifetime - to define current service registration lifetime
  • ServiceType - Specifies which service is target for DI registration. If left null/default service will be automatically retrieved either from first interface current class implements or the class itself will become a serviceType.
• Use [Decorator] attribute for your classes with optional params for auto registration of decorator for specific service type in DI container:
  • ServiceType - Specifies which service is target for decoration. If left null/default service will be automatically resolved to first interface current class implements.
  • DecorationOrder - Defines order of decoration. Lower decoration order will be closer to original implementation in chain of execution order. And, respectively, decorator with highest DecorationOrder will be executed last.

Examples

IService resolves to:

• DecoratorA
  • wrapping a SampleService

[Service]
class SampleService : IService {}

[Decorator]
class DecoratorA : IService {}

IService resolves to:

• DecoratorB
  • wrapping a DecoratorA
    • wrapping a SampleService

[Service(serviceType: typeof(IService), lifetime: Lifetime.Singleton)]
class SampleService : IService {}

[Decorator(serviceType: typeof(IService), decorationOrder: 1)]
class DecoratorA : IService {}

[Decorator(serviceType: typeof(IService), decorationOrder: 2)]
class DecoratorB : IService {}