Kotz.DependencyInjection 2.2.0-nightly-042

Kotz.DependencyInjection

• Dependencies:
  • Microsoft.Extensions.DependencyInjection.Abstractions

Defines the following extension methods:

• IServiceCollection Extensions
  • RegisterServices: Registers all classes and structs from an assembly that have a ServiceAttributeBase applied to them.
• IServiceProvider and IServiceScopeFactory Extensions
  • GetParameterizedService: Gets a service that requires arguments that are not registered in the IoC container.
  • GetScopedService: Gets a service that needs to be resolved from a scope.

Defines the following types:

• ServiceAttributeBase: It's the base class for dependency injection registrations.
• ServiceAttribute: Marks a class or struct for registration via the IServiceCollection.RegisterServices extension method.
• ServiceAttribute<T>: Marks a class or struct for registration under the type T via the IServiceCollection.RegisterServices extension method.

How to use the attributes

1. Registering the type directly

// Registration.
[Service(ServiceLifetime.Singleton)]
public sealed class MyService { ... }

// Resolution.
serviceProvider.GetRequiredService<MyService>();

2. Registering the type through another type.

// Registration.
[Service<ISomething>(ServiceLifetime.Scoped)]
public sealed class MyService : ISomething { ... }

// Resolution.
serviceProvider.GetRequiredService<ISomething>();

3. Registering multiple types under the same type.

[Service<ISomething>(ServiceLifetime.Transient, true)]
public sealed class MyService1 : ISomething { ... }

[Service<ISomething>(ServiceLifetime.Transient, true)]
public sealed class MyService2 : ISomething { ... }

[Service<ISomething>(ServiceLifetime.Transient, true)]
public sealed class MyService3 : ISomething { ... }

4. Registering the services in the IServiceCollection.

// To register services from the current assembly.
serviceCollection.RegisterServices();

// OR

// To register services from a specific assembly.
serviceCollection.RegisterServices(assembly);