/// <summary>
/// Adds an event handler to the subscription, adding the specified retry policy
/// </summary>
/// <param name="builder">Subscription builder</param>
/// <param name="retryPolicy">Polly retry policy</param>
/// <typeparam name="THandler">Event handler type</typeparam>
/// <returns></returns>
public static SubscriptionBuilder AddEventHandlerWithRetries <THandler>(
this SubscriptionBuilder builder,
IAsyncPolicy retryPolicy
) where THandler : class, IEventHandler
=> builder.AddCompositionEventHandler <THandler, PollyEventHandler>(
h => new PollyEventHandler(h, retryPolicy)
);
/// <summary>
/// Adds an event handler to the subscription, adding the specified retry policy
/// </summary>
/// <param name="builder">Subscription builder</param>
/// <param name="getHandler">Function to construct the handler</param>
/// <param name="retryPolicy">Polly retry policy</param>
/// <typeparam name="THandler">Event handler type</typeparam>
/// <returns></returns>
public static SubscriptionBuilder AddEventHandlerWithRetries <THandler>(
this SubscriptionBuilder builder,
Func <IServiceProvider, THandler> getHandler,
IAsyncPolicy retryPolicy
) where THandler : class, IEventHandler
=> builder.AddCompositionEventHandler(
getHandler,
h => new PollyEventHandler(h, retryPolicy)
);