/// <summary>
/// Adds a singleton service of the type specified in <paramref name="serviceType"/> with an
/// instance specified in <paramref name="implementationInstance"/> to the specified <see cref="IServiceCollection"/>.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection"/> to add the service to.</param>
/// <param name="serviceType">The type of the service to register.</param>
/// <param name="implementationInstance">The instance of the service.</param>
/// <returns>A reference to this instance after the operation has completed.</returns>
/// <seealso cref="ServiceLifetime.Singleton"/>
public static IServiceCollection AddSingleton(
this PollyServiceCollection services,
Type serviceType,
object implementationInstance)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (serviceType == null)
{
throw new ArgumentNullException(nameof(serviceType));
}
if (implementationInstance == null)
{
throw new ArgumentNullException(nameof(implementationInstance));
}
var serviceDescriptor = new ServiceDescriptor(serviceType, implementationInstance);
services.Add(serviceDescriptor);
return(services);
}
private static IServiceCollection Add(
PollyServiceCollection collection,
Type serviceType,
Func <IServiceProvider, object> implementationFactory,
ServiceLifetime lifetime)
{
var descriptor = new ServiceDescriptor(serviceType, implementationFactory, lifetime);
collection.Add(descriptor);
return(collection);
}
private static IServiceCollection Add(
PollyServiceCollection collection,
Type serviceType,
Type implementationType,
ServiceLifetime lifetime)
{
var descriptor = new ServiceDescriptor(serviceType, implementationType, lifetime);
collection.Add(descriptor);
return(collection);
}