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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using Microsoft.AspNetCore.OutputCaching;
using Microsoft.AspNetCore.OutputCaching.Memory;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.ObjectPool;
using Microsoft.Extensions.Options;
namespace Microsoft.Extensions.DependencyInjection;
/// <summary>
/// Extension methods for the OutputCaching middleware.
/// </summary>
public static class OutputCacheServiceCollectionExtensions
{
/// <summary>
/// Add output caching services.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection"/> for adding services.</param>
/// <returns></returns>
public static IServiceCollection AddOutputCache(this IServiceCollection services)
{
ArgumentNullException.ThrowIfNull(services);
services.AddTransient<IConfigureOptions<OutputCacheOptions>, OutputCacheOptionsSetup>();
services.TryAddSingleton<ObjectPoolProvider, DefaultObjectPoolProvider>();
services.TryAddSingleton<IOutputCacheStore>(sp =>
{
var outputCacheOptions = sp.GetRequiredService<IOptions<OutputCacheOptions>>();
return new MemoryOutputCacheStore(new MemoryCache(new MemoryCacheOptions
{
SizeLimit = outputCacheOptions.Value.SizeLimit
}));
});
return services;
}
/// <summary>
/// Add output caching services and configure the related options.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection"/> for adding services.</param>
/// <param name="configureOptions">A delegate to configure the <see cref="OutputCacheOptions"/>.</param>
/// <returns></returns>
public static IServiceCollection AddOutputCache(this IServiceCollection services, Action<OutputCacheOptions> configureOptions)
{
ArgumentNullException.ThrowIfNull(services);
ArgumentNullException.ThrowIfNull(configureOptions);
services.AddOutputCache();
services.Configure(configureOptions);
return services;
}
}
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