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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.
namespace Microsoft.AspNetCore.Mvc.Controllers;
/// <summary>
/// Provides methods to create and release a controller.
/// </summary>
public interface IControllerFactoryProvider
{
/// <summary>
/// Creates a factory for producing controllers for the specified <paramref name="descriptor"/>.
/// </summary>
/// <param name="descriptor">The <see cref="ControllerActionDescriptor"/>.</param>
/// <returns>The controller factory.</returns>
Func<ControllerContext, object> CreateControllerFactory(ControllerActionDescriptor descriptor);
/// <summary>
/// Releases a controller.
/// </summary>
/// <param name="descriptor">The <see cref="ControllerActionDescriptor"/>.</param>
/// <returns>The delegate used to release the created controller.</returns>
Action<ControllerContext, object>? CreateControllerReleaser(ControllerActionDescriptor descriptor);
/// <summary>
/// Releases a controller asynchronously.
/// </summary>
/// <param name="descriptor">The <see cref="ControllerActionDescriptor"/>.</param>
/// <returns>The delegate used to release the created controller asynchronously.</returns>
Func<ControllerContext, object, ValueTask>? CreateAsyncControllerReleaser(ControllerActionDescriptor descriptor)
{
var releaser = CreateControllerReleaser(descriptor);
if (releaser is null)
{
return static (_, _) => default;
}
return (context, controller) =>
{
releaser.Invoke(context, controller);
return default;
};
}
}
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