Installation

Install-Package Extensions.DependencyInjection.Factories -Version 2.3.0Install-Package Extensions.DependencyInjection.Modules -Version 2.3.0Install-Package Extensions.DependencyInjection.Proxies -Version 2.3.0

Usage

publicinterfaceIAckService{}publicinterfaceIBazService{}publicinterfaceIQuxService{}publicclassAckService:IAckService{privatereadonlyobject_source;publicAckService(objectsource)=>_source=source??thrownewArgumentNullException(nameof(source));}publicclassBazService:IBazService{publicBazService(){}}publicclassQuxService:IQuxService{privatereadonlyILogger<QuxService>_logger;privatereadonlyobject_source;publicQuxService(ILogger<QuxService>logger,objectsource){_logger=logger??thrownewArgumentNullException(nameof(logger));_source=source??thrownewArgumentNullException(nameof(source));}}publicclassStartup{publicStartup(IConfigurationconfiguration){Configuration=configuration;}publicIConfigurationConfiguration{get;}publicvoidConfigureServices(IServiceCollectionservices){if(services==null){thrownewArgumentNullException(nameof(services));}Services.AddTransient<IBazService,BazService>();Services.AddServiceFactory<IBazService,BazService>();// Many ways of registering service factory:// Services.AddServiceFactory<IBazService, BazService>(() => new BazService()); // Manual instantiation// Services.AddServiceFactory<IBazService, BazService>((object[] args) => new BazService()); // Receives args// Services.AddServiceFactory<IBazService, BazService>((IServiceProvider provider, object[] args) => new BazService()); // Receives ServiceProvider and args// Services.AddServiceFactory<IBazService, BazService>((IServiceProvider provider, object[] args) => provider.GetServiceOrCreateInstance<IBazService>()); // Requires IBazService registration// Services.AddServiceFactory<IBazService, BazService>((IServiceProvider provider, object[] args) => provider.GetServiceOrCreateInstance<BazService>()); // No matter IBazService was registered or not into DI containerServices.AddServiceFactory<IAckService,AckService>((IServiceProviderprovider,object[]args)=>provider.CreateInstance<AckService>(args));// IAckService must not be registered into DI containerServices.AddServiceFactory<IQuxService,QuxService>((IServiceProviderprovider,object[]args)=>provider.CreateInstance<QuxService>(args));// IQuxService must not be registered into DI container}}publicclassDIController:Controller{privatereadonlyIServiceFactory<IBazService>_bazServiceFactory;privatereadonlyIServiceFactory<IAckService>_ackServiceFactory;privatereadonlyIServiceFactory<IQuxService>_quxServiceFactory;publicDIController(IServiceFactory<IBazService>bazServiceFactory,IServiceFactory<IAckService>ackServiceFactory,IServiceFactory<IQuxService>quxServiceFactory){_bazServiceFactory=bazServiceFactory??thrownewArgumentNullException(nameof(bazServiceFactory));_ackServiceFactory=ackServiceFactory??thrownewArgumentNullException(nameof(ackServiceFactory));_quxServiceFactory=quxServiceFactory??thrownewArgumentNullException(nameof(quxServiceFactory));}publicIActionResultGet(){varbazService=_bazServiceFactory.GetService();varackService=_bazServiceFactory.GetService(newobject());varquxService=_bazServiceFactory.GetService(newobject());returnOk();}}

publicclassServicesModule:IModuleRegistry{publicstringModuleName=>nameof(ServicesModule);publicvoidRegistry(IServiceCollectionservices,IConfigurationconfiguration=null,ILoggerFactoryloggerFactory=null,IHostEnvironmenthostEnvironment=null){if(services==null){thrownewArgumentNullException(nameof(services));}// Register your services here.}}publicclassMessagingModule:IModuleRegistry{publicstringModuleName=>nameof(MessagingModule);publicvoidRegistry(IServiceCollectionservices,IConfigurationconfiguration=null,ILoggerFactoryloggerFactory=null,IHostEnvironmenthostEnvironment=null){if(services==null){thrownewArgumentNullException(nameof(services));}// Register your messaging services here.}}publicclassStartup{publicStartup(IConfigurationconfiguration){Configuration=configuration;}publicIConfigurationConfiguration{get;}publicvoidConfigureServices(IServiceCollectionservices){if(services==null){thrownewArgumentNullException(nameof(services));}IModuleCollectionmoduleCollection=newModuleCollection();moduleCollection.AddModule<ServicesModule>().AddModule<MessagingModule>().Registry(services,Configuration);// Configuration, LoggerFactory and HostEnvironment are optional parameters.}}

publicinterfaceIBarService{stringExecute();}publicinterfaceIFooService{stringExecute();}publicclassFooService:IFooService{privatereadonlyIBarService_barService;// At this moment barService is just a proxy, it wasn't instantiated yetpublicFooService(IBarServicebarService)=>_barService=barService??thrownewArgumentNullException(nameof(barService));// When invoked, it gets instantiatedpublicstringExecute()=>$"Foo-{_barService.Execute()}";}publicclassBarService:IBarService{publicstringExecute()=>$"Bar";}publicclassStartup{publicStartup(IConfigurationconfiguration){Configuration=configuration;}publicIConfigurationConfiguration{get;}publicvoidConfigureServices(IServiceCollectionservices){if(services==null){thrownewArgumentNullException(nameof(services));}// Many ways of registering services as proxies:services.AddTransientProxy<IFooService,FooService>();services.AddTransientProxy<IBarService,BarService>();// You can also provide an ImplementationFactory that will be used to create the service.// services.AddTransientProxy<IFooService, FooService>(() => new FooService(new BarService()));// services.AddTransientProxy<IBarService, BarService>(() => new BarService());// Or:// services.AddTransient<IFooService>(provider => provider.CreateProxy<IFooService, FooService>());// services.AddTransient<IBarService>(provider => provider.CreateProxy<IBarService, BarService>());// You can also provide an ImplementationFactory that will be used to create the service.// services.AddTransient<IFooService>(provider => provider.CreateProxy<IFooService, FooService>(() => new FooService(provider.GetService<IBarService>())));// services.AddTransient<IBarService>(provider => provider.CreateProxy<IBarService, BarService>(() => new BarService()));// All Lifetimes are available (Transient, Scoped and Singleton).}}publicclassFooController:Controller{privatereadonlyIFooService_fooService;// At this moment fooService is just a proxy, it wasn't instantiated yet// Also its dependency barService is just a proxy, it wasn't instantiated toopublicFooController(IFooServicefooService)=>_fooService=fooService??thrownewArgumentNullException(nameof(fooService));publicIActionResultGet(){// When invoked, it gets instantiated// barService is still a proxyvarresult=fooService.Execute();returnOk(result);}}

Support / Contributing

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