mirror of https://github.com/Radarr/Radarr
123 lines
5.0 KiB
C#
123 lines
5.0 KiB
C#
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// This software is part of the Autofac IoC container
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// Copyright (c) 2011 Autofac Contributors
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// http://autofac.org
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.Web;
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namespace Autofac.Integration.Mvc
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{
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/// <summary>
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/// Creates and disposes HTTP request based lifetime scopes.
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/// </summary>
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/// <remarks>
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/// The provider is notified when a HTTP request ends by the <see cref="RequestLifetimeHttpModule"/>.
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/// </remarks>
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public class RequestLifetimeScopeProvider : ILifetimeScopeProvider
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{
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readonly ILifetimeScope _container;
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/// <summary>
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/// Tag used to identify registrations that are scoped to the HTTP request level.
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/// </summary>
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internal static readonly object HttpRequestTag = "AutofacWebRequest";
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/// <summary>
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/// Initializes a new instance of the <see cref="RequestLifetimeScopeProvider"/> class.
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/// </summary>
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/// <param name="container">The parent container, usually the application container.</param>
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public RequestLifetimeScopeProvider(ILifetimeScope container)
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{
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if (container == null) throw new ArgumentNullException("container");
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_container = container;
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RequestLifetimeHttpModule.SetLifetimeScopeProvider(this);
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}
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/// <summary>
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/// Gets the global, application-wide container.
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/// </summary>
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public ILifetimeScope ApplicationContainer
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{
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get { return _container; }
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}
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static ILifetimeScope LifetimeScope
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{
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get { return (ILifetimeScope)HttpContext.Current.Items[typeof(ILifetimeScope)]; }
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set { HttpContext.Current.Items[typeof(ILifetimeScope)] = value; }
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}
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/// <summary>
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/// Gets a nested lifetime scope that services can be resolved from.
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/// </summary>
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/// <param name="configurationAction">
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/// A configuration action that will execute during lifetime scope creation.
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/// </param>
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/// <returns>A new or existing nested lifetime scope.</returns>
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public ILifetimeScope GetLifetimeScope(Action<ContainerBuilder> configurationAction)
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{
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if (HttpContext.Current == null)
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{
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throw new InvalidOperationException(RequestLifetimeScopeProviderResources.HttpContextNotAvailable);
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}
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if (LifetimeScope == null)
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{
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if ((LifetimeScope = GetLifetimeScopeCore(configurationAction)) == null)
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throw new InvalidOperationException(
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string.Format(CultureInfo.CurrentCulture, RequestLifetimeScopeProviderResources.NullLifetimeScopeReturned, GetType().FullName));
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}
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return LifetimeScope;
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}
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/// <summary>
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/// Ends the current HTTP request lifetime scope.
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/// </summary>
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public void EndLifetimeScope()
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{
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var lifetimeScope = LifetimeScope;
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if (lifetimeScope != null)
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lifetimeScope.Dispose();
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}
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/// <summary>
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/// Gets a lifetime scope for the current HTTP request. This method can be overridden
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/// to alter the way that the life time scope is constructed.
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/// </summary>
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/// <param name="configurationAction">
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/// A configuration action that will execute during lifetime scope creation.
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/// </param>
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/// <returns>A new lifetime scope for the current HTTP request.</returns>
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[SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate")]
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protected virtual ILifetimeScope GetLifetimeScopeCore(Action<ContainerBuilder> configurationAction)
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{
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return (configurationAction == null)
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? ApplicationContainer.BeginLifetimeScope(HttpRequestTag)
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: ApplicationContainer.BeginLifetimeScope(HttpRequestTag, configurationAction);
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}
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}
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}
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