var app = builder.Build();
await app.Services.WarmUpAsync();
Population service
You can use the population service to create a list of random value of a specific Type.
An example from unit test explains how to use the service.
IServiceCollection services = new ServiceCollection();
services.AddPopulationService();
var serviceProvider = services.BuildServiceProvider().CreateScope().ServiceProvider;
var populatedModel = serviceProvider.GetService<IPopulation<PopulationModelTest>>();
IPopulation<PopulationModelTest> allPrepopulation = populatedModel!
.Setup()
.WithPattern(x => x.J!.First().A, "[a-z]{4,5}")
.WithPattern(x => x.Y!.First().Value.A, "[a-z]{4,5}")
.WithImplementation(x => x.I, typeof(MyInnerInterfaceImplementation))
.WithPattern(x => x.I!.A!, "[a-z]{4,5}")
.WithPattern(x => x.II!.A!, "[a-z]{4,5}")
.WithImplementation<IInnerInterface, MyInnerInterfaceImplementation>(x => x.I!);
var all = allPrepopulation.Populate();
Abstract factory
You can use this abstract factory solution when you need to setup more than one service of the same kind
and you need to distinguish them by a name.
I have an interface
public interface IMyService
{
string GetName();
}
Some options for every service
public class SingletonOption
{
public string ServiceName { get; set; }
}
public class TransientOption
{
public string ServiceName { get; set; }
}
public class ScopedOption
{
public string ServiceName { get; set; }
}
with built options which is a IServiceOptions, a options class that ends up with another class. Used for example when you have to add a settings like a connection string but you want to use a service like a client that uses that connection string.
public class BuiltScopedOptions : IServiceOptions<ScopedOption>
{
public string ServiceName { get; set; }
public Task<Func<ScopedOption>> BuildAsync()
{
return Task.FromResult(() => new ScopedOption
{
ServiceName = ServiceName
});
}
}
And six different services
public class SingletonService : IMyService, IServiceWithOptions<SingletonOption>
{
public SingletonOption Options { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
public string GetName()
{
return $"{Options.ServiceName} with id {Id}";
}
}
public class TransientService : IMyService, IServiceWithOptions<TransientOption>
{
public TransientOption Options { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
public string GetName()
{
return $"{Options.ServiceName} with id {Id}";
}
}
public class ScopedService : IMyService, IServiceWithOptions<ScopedOption>
{
public ScopedOption Options { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
public string GetName()
{
return $"{Options.ServiceName} with id {Id}";
}
}
public class ScopedService2 : IMyService, IServiceWithOptions<ScopedOption>
{
public ScopedOption Options { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
public string GetName()
{
return $"{Options.ServiceName} with id {Id}";
}
}
public class ScopedService3 : IMyService, IServiceWithOptions<ScopedOption>
{
public ScopedOption Options { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
public string GetName()
{
return $"{Options.ServiceName} with id {Id}";
}
}
public class ScopedService4 : IMyService, IServiceWithOptions<ScopedOption>
{
public ScopedOption Options { get; set; }
public string Id { get; } = Guid.NewGuid().ToString();
public string GetName()
{
return $"{Options.ServiceName} with id {Id}";
}
}
var serviceProvider = services.BuildServiceProvider().CreateScope().ServiceProvider;
var factory = serviceProvider.GetService<IFactory<IMyService>>()!;
var factory2 = serviceProvider.GetService<IFactory<IMyService>>()!;
var singletonFromFactory = factory.Create("singleton").Id;
var singletonFromFactory2 = factory2.Create("singleton").Id;
var transientFromFactory = factory.Create("transient").Id;
var transientFromFactory2 = factory2.Create("transient").Id;
var scopedFromFactory = factory.Create("scoped").Id;
var scopedFromFactory2 = factory2.Create("scoped").Id;
var scoped2FromFactory = factory.Create("scoped2").Id;
var scoped2FromFactory2 = factory2.Create("scoped2").Id;
var scoped3FromFactory = factory.Create("scoped3").Id;
var scoped3FromFactory2 = factory2.Create("scoped3").Id;
var scoped3_2FromFactory = factory.Create("scoped3_2").Id;
var scoped3_2FromFactory2 = factory2.Create("scoped3_2").Id;
var scoped4FromFactory = factory.Create("scoped4").Id;
var scoped4FromFactory2 = factory2.Create("scoped4").Id;
Assert.Equal(singletonFromFactory, singletonFromFactory2);
Assert.NotEqual(transientFromFactory, transientFromFactory2);
Assert.Equal(scopedFromFactory, scopedFromFactory2);
Assert.Equal(scoped2FromFactory, scoped2FromFactory2);
Assert.NotEqual(scoped3FromFactory, scoped3FromFactory2);
Assert.NotEqual(scoped3_2FromFactory, scoped3_2FromFactory2);
Assert.NotEqual(scoped4FromFactory, scoped4FromFactory2);
Decorator
You may add a decoration for your services, based on the abstract factory integration.
The decorator service replaces the previous version and receives it during the injection.
var decorator = provider.GetRequiredService<ITestWithoutFactoryService>();
var previousService = provider.GetRequiredService<IDecoratedService<ITestWithoutFactoryService>>();
In decorator you may find the previousService in the method SetDecoratedService which runs in injection
public class TestWithoutFactoryServiceDecorator : ITestWithoutFactoryService, IDecoratorService<ITestWithoutFactoryService>
{
public string Id { get; } = Guid.NewGuid().ToString();
public ITestWithoutFactoryService Test { get; private set; }
public void SetDecoratedService(ITestWithoutFactoryService service)
{
Test = service;
}
public void SetFactoryName(string name)
{
return;
}
}
Decorator with Abstract Factory integration
You may add a decoration only for one service of your factory integration.
var decoratorFactory = provider.GetRequiredService<IFactory<ITestService>>();
var decorator = decoratorFactory.Create(factoryName);
var previousService = decoratorFactory.CreateWithoutDecoration(factoryName);
Scan dependency injection
You may scan your assemblies in search of types you need to add to dependency injection.
For instance I have an interface IAnything and I need to add all classes which implements it.
public interface IAnything
{
}
internal class ScanModels : IAnything
{
}