bootstrappedStartup

This repo contains severals samples as:

use a BaseStartup to wrap Startup in a webapi
how to use Unity as Service Provider.
implement Interceptors (AOP) but without replacing the service provider.

Project webapiOverloadStartup:

the wrapped webapi Startup class.

Project webapiOverloadStartup.Bootstrap

Provide a way to use a Base StartupClass in a webapi where to put common functionalities. It is like inheritance but hidden and using the dotnet approach to call Startup methods, usually by convention.

BaseIStartup class is the Startup class dotnet will see and use in the pipeline.

Method UseBootstrapStartup() : call this method to wrap a client Startup class, it will look and work as a regular Startup.

Project webapiOverloadStartup.Bootstrap.UnityContainer

use Unity as Service Provider in the BaseStartup:

To use Unity as container in a regular startup check : https://github.com/unitycontainer/microsoft-dependency-injection Nuget package Unity.Microsoft.DependencyInjection

The implementation I propose here is about how to do it with a BaseStartup (like having 2 startups and controlling the instanciation pipeline by yourself)

The container replacement is done, basically, implementing the method ConfigureContainer() in Statup class. The problem is that I'm using a BaseStartup class and dotnetcore will look for ConfigureContainer there, and not in the child Startup.

in Program.cs call

.AddUnityServiceProvider()

This method call UseUnityServiceProvider() from Unity.Microsoft.DependencyInjection but also register a IStartoConfigureContainerFilter The filter implementatio is ConfigureStartupConfigureContainerFilter which will discover and call the ConfigureContainer() method on Startup class.

in Startup.cs implement

void ConfigureContainer(IUnityContainer container)

Use Interceptors:

in Startup.cs check void ConfigureServices(IServiceCollection services)

To register an interceptor call method:

services.AddTransientForInterception<IDataService, DataService>(sc => sc.InterceptBy<TInterceptorData>());

Register IDataService interface, that is implemented by DataService class, and intercept this class with TInterceptorData class

TInterceptorData implement interface Castle.DynamicProxy.IInterceptor which provide the method

void Intercept(IInvocation invocation) { }