mirror of https://github.com/Radarr/Radarr
165 lines
7.4 KiB
C#
165 lines
7.4 KiB
C#
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// This software is part of the Autofac IoC container
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// Copyright © 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.Collections.Generic;
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using System.Web.Mvc;
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namespace Autofac.Integration.Mvc
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{
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/// <summary>
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/// Autofac implementation of the <see cref="IDependencyResolver"/> interface.
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/// </summary>
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public class AutofacDependencyResolver : IDependencyResolver
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{
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readonly ILifetimeScope _container;
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readonly Action<ContainerBuilder> _configurationAction;
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ILifetimeScopeProvider _lifetimeScopeProvider;
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/// <summary>
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/// Initializes a new instance of the <see cref="AutofacDependencyResolver"/> class.
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/// </summary>
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/// <param name="container">The container that nested lifetime scopes will be create from.</param>
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public AutofacDependencyResolver(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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}
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/// <summary>
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/// Initializes a new instance of the <see cref="AutofacDependencyResolver"/> class.
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/// </summary>
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/// <param name="container">The container that nested lifetime scopes will be create from.</param>
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/// <param name="configurationAction">Action on a <see cref="ContainerBuilder"/>
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/// that adds component registations visible only in nested lifetime scopes.</param>
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public AutofacDependencyResolver(ILifetimeScope container, Action<ContainerBuilder> configurationAction)
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: this(container)
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{
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if (configurationAction == null) throw new ArgumentNullException("configurationAction");
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_configurationAction = configurationAction;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="AutofacDependencyResolver"/> class.
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/// </summary>
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/// <param name="container">The container that nested lifetime scopes will be create from.</param>
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/// <param name="lifetimeScopeProvider">A <see cref="ILifetimeScopeProvider"/> implementation for
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/// creating new lifetime scopes.</param>
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public AutofacDependencyResolver(ILifetimeScope container, ILifetimeScopeProvider lifetimeScopeProvider) :
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this(container)
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{
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if (lifetimeScopeProvider == null) throw new ArgumentNullException("lifetimeScopeProvider");
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_lifetimeScopeProvider = lifetimeScopeProvider;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="AutofacDependencyResolver"/> class.
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/// </summary>
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/// <param name="container">The container that nested lifetime scopes will be create from.</param>
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/// <param name="lifetimeScopeProvider">A <see cref="ILifetimeScopeProvider"/> implementation for
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/// creating new lifetime scopes.</param>
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/// <param name="configurationAction">Action on a <see cref="ContainerBuilder"/>
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/// that adds component registations visible only in nested lifetime scopes.</param>
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public AutofacDependencyResolver(ILifetimeScope container, ILifetimeScopeProvider lifetimeScopeProvider, Action<ContainerBuilder> configurationAction)
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: this(container, lifetimeScopeProvider)
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{
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if (configurationAction == null) throw new ArgumentNullException("configurationAction");
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_configurationAction = configurationAction;
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}
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/// <summary>
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/// Gets the Autofac implementation of the dependency resolver.
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/// </summary>
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public static AutofacDependencyResolver Current
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{
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get
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{
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// Issue 351: We can't necessarily cast the current dependency resolver
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// to AutofacDependencyResolver because diagnostic systems like Glimpse
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// will wrap/proxy the resolver. Instead we need to register the resolver
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// on the fly with the request lifetime scope and resolve it accordingly.
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return DependencyResolver.Current.GetService<AutofacDependencyResolver>();
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}
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}
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/// <summary>
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/// The lifetime containing components for processing the current HTTP request.
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/// </summary>
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public ILifetimeScope RequestLifetimeScope
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{
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get
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{
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// Issue 351: Register the AutofacDependencyResolver with
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// the request lifetime scope so the current resolver can
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// be retrieved without having to cast it directly to
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// this specific type.
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Action<ContainerBuilder> composite = builder =>
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{
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if (this._configurationAction != null)
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{
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this._configurationAction(builder);
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}
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builder.RegisterInstance(this).As<AutofacDependencyResolver>();
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};
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if (_lifetimeScopeProvider == null)
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{
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_lifetimeScopeProvider = new RequestLifetimeScopeProvider(_container);
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}
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return _lifetimeScopeProvider.GetLifetimeScope(composite);
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}
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}
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/// <summary>
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/// Gets the application container that was provided to the constructor.
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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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/// <summary>
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/// Get a single instance of a service.
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/// </summary>
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/// <param name="serviceType">Type of the service.</param>
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/// <returns>The single instance if resolved; otherwise, <c>null</c>.</returns>
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public object GetService(Type serviceType)
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{
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return RequestLifetimeScope.ResolveOptional(serviceType);
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}
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/// <summary>
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/// Gets all available instances of a services.
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/// </summary>
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/// <param name="serviceType">Type of the service.</param>
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/// <returns>The list of instances if any were resolved; otherwise, an empty list.</returns>
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public IEnumerable<object> GetServices(Type serviceType)
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{
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var enumerableServiceType = typeof(IEnumerable<>).MakeGenericType(serviceType);
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var instance = RequestLifetimeScope.Resolve(enumerableServiceType);
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return (IEnumerable<object>)instance;
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}
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}
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}
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