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Readarr/Autofac.Integration.Mvc/RequestLifetimeHttpModule.cs

79 lines
3.1 KiB

// This software is part of the Autofac IoC container
// Copyright <20> 2011 Autofac Contributors
// http://autofac.org
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
using System;
using System.Web;
namespace Autofac.Integration.Mvc
{
/// <summary>
/// An <see cref="IHttpModule"/> and <see cref="ILifetimeScopeProvider"/> implementation
/// that creates a nested lifetime scope for each HTTP request.
/// </summary>
internal class RequestLifetimeHttpModule : IHttpModule
{
/// <summary>
/// Gets the lifetime scope provider that should be notified when a HTTP request ends.
/// </summary>
internal static ILifetimeScopeProvider LifetimeScopeProvider { get; private set; }
/// <summary>
/// Initializes a module and prepares it to handle requests.
/// </summary>
/// <param name="context">An <see cref="T:System.Web.HttpApplication"/> that provides access to the
/// methods, properties, and events common to all application objects within an ASP.NET application</param>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="context" /> is <see langword="null" />.
/// </exception>
public void Init(HttpApplication context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
context.EndRequest += OnEndRequest;
}
/// <summary>
/// Disposes of the resources (other than memory) used by the module that implements <see cref="T:System.Web.IHttpModule"/>.
/// </summary>
public void Dispose()
{
}
public static void SetLifetimeScopeProvider(ILifetimeScopeProvider lifetimeScopeProvider)
{
if (lifetimeScopeProvider == null) throw new ArgumentNullException("lifetimeScopeProvider");
LifetimeScopeProvider = lifetimeScopeProvider;
}
static void OnEndRequest(object sender, EventArgs e)
{
if (LifetimeScopeProvider != null)
LifetimeScopeProvider.EndLifetimeScope();
}
}
}