/// <summary>
/// Adds a service contributor, which has a chance to chain previously registered service instances.
/// </summary>
/// <typeparam name="T">The service type.</typeparam>
/// <param name="obj">The <see cref="IServiceCollection"/>.</param>
/// <param name="contributor">An instance of <see cref="ApiServiceContributor{T}"/>.</param>
/// <returns>Current <see cref="IServiceCollection"/></returns>
public static IServiceCollection AddContributor <T>(
this IServiceCollection obj,
ApiServiceContributor <T> contributor)
where T : class
{
Ensure.NotNull(obj, "obj");
Ensure.NotNull(contributor, "contributor");
return(obj.AddContributorNoCheck <T>(contributor));
}
/// <summary>
/// Adds a service contributor, which has a chance to chain previously registered service instances.
/// </summary>
/// <typeparam name="T">The service type.</typeparam>
/// <param name="services">The <see cref="IServiceCollection"/>.</param>
/// <param name="contributor">An instance of <see cref="ApiServiceContributor{T}"/>.</param>
/// <returns>Current <see cref="IServiceCollection"/></returns>
public static IServiceCollection AddContributor <T>(
this IServiceCollection services,
ApiServiceContributor <T> contributor)
where T : class
{
Ensure.NotNull(services, "services");
Ensure.NotNull(contributor, "contributor");
return(services.AddContributorNoCheck <T>(contributor));
}
private static IServiceCollection AddContributorNoCheck <TService>(
this IServiceCollection services,
ApiServiceContributor <TService> contributor)
where TService : class
{
// Services have singleton lifetime by default, call Make... to change.
services.TryAddSingleton(typeof(TService), ChainedService <TService> .DefaultFactory);
services.AddSingleton(contributor);
return(services);
}
private static IServiceCollection AddContributorNoCheck <T>(
this IServiceCollection obj,
ApiServiceContributor <T> contributor)
where T : class
{
// Services have singleton lifetime by default, call Make... to change.
obj.TryAddSingleton(typeof(T), ChainedService <T> .DefaultFactory);
obj.AddInstance(contributor);
return(obj);
}
private static IServiceCollection AddContributorNoCheck <TService>(
this IServiceCollection services,
ApiServiceContributor <TService> contributor,
ServiceLifetime serviceLifetime = ServiceLifetime.Singleton)
where TService : class
{
var serviceDescriptor = new ServiceDescriptor(typeof(TService), ChainedService <TService> .DefaultFactory, serviceLifetime);
services.TryAdd(serviceDescriptor);
services.AddSingleton(contributor);
return(services);
}
