DependencyInjection.ServiceRegistrator 1.0.0

DependencyInjection.ServiceRegistrator

Super tiny library for registrating your services and factory instance types by using only attributes

How to setup services

If you want to apply interface with implementation (service) type, you can try this approach.

public interface IDataAccess
{
	string GetData();
}

[ServiceRegistration(typeof(IDataAccess), typeof(DataAccess))]
public class DataAccess : IDataAccess
{
	public string GetData()
	{
		return "Data sample";
	}
}

Otherwise if you dont need a corresponding interface, you can just skip it.

[ServiceRegistration(typeof(DataAccess))]
public class DataAccess : IDataAccess
{
	public string GetData()
	{
		return "Data sample";
	}
}

How to setup factories

[ServiceRegistration(typeof(TesterClass), Type = ServiceType.Factory)]
public class TesterClass
{
    public TesterClass()
    {
        TestString = Guid.NewGuid().ToString();
    }

    public string TestString { get; }
}

How to register the services

In this example i will use IHostBuilder from the Microsoft.Extensions.Hosting package, but you can just use IServiceCollection instance, example lower.

var hostBuilder = Host.CreateDefaultBuilder();
ServiceRegistrator.Register(hostBuilder);

var host = hostBuilder.Build();

var serviceCollection = new ServiceCollection();
ServiceRegistrator.Register(serviceCollection);

var serviceProvider = serviceCollection.BuildServiceProvider();

ServiceRegistrator is a public static class that obtains every type of the calling assembly, then it takes only types that have ServiceRegistration. This is being implemented using reflection.

How to use factories

var factory = services.GetRequiredService<IFactory<TesterClass>>();

// creating 5 new instances using factory pattern
for (int i = 0; i < 5; i++)
	Console.WriteLine(factory.Create().TestString);