Moved functionality from HostingEnvironment into IUmbracoApplicationLifetime, to not have duplicated logic

src/Umbraco.Core/Hosting/IHostingEnvironment.cs

@@ -22,11 +22,6 @@ namespace Umbraco.Core.Hosting
         string MapPath(string path);
         string ToAbsolute(string virtualPath, string root);
 
-        /// <summary>
-        /// Terminates the current application. The application restarts the next time a request is received for it.
-        /// </summary>
-        void LazyRestartApplication();
-
         void RegisterObject(IRegisteredObject registeredObject);
         void UnregisterObject(IRegisteredObject registeredObject);
     }

src/Umbraco.Core/Manifest/ManifestWatcher.cs

@@ -4,6 +4,7 @@ using System.IO;
 using System.Linq;
 using Umbraco.Core.Hosting;
 using Umbraco.Core.Logging;
+using Umbraco.Net;
 
 namespace Umbraco.Core.Manifest
 {
@@ -13,13 +14,13 @@ namespace Umbraco.Core.Manifest
         private static volatile bool _isRestarting;
 
         private readonly ILogger _logger;
-        private readonly IHostingEnvironment _hostingEnvironment;
+        private readonly IUmbracoApplicationLifetime _umbracoApplicationLifetime;
         private readonly List<FileSystemWatcher> _fws = new List<FileSystemWatcher>();
 
-        public ManifestWatcher(ILogger logger, IHostingEnvironment hostingEnvironment)
+        public ManifestWatcher(ILogger logger, IUmbracoApplicationLifetime umbracoApplicationLifetime)
         {
             _logger = logger ?? throw new ArgumentNullException(nameof(logger));
-            _hostingEnvironment = hostingEnvironment;
+            _umbracoApplicationLifetime = umbracoApplicationLifetime;
         }
 
         public void Start(params string[] packageFolders)
@@ -57,7 +58,7 @@ namespace Umbraco.Core.Manifest
 
                 _isRestarting = true;
                 _logger.Info<ManifestWatcher>("Manifest has changed, app pool is restarting ({Path})", e.FullPath);
-                _hostingEnvironment.LazyRestartApplication();
+                _umbracoApplicationLifetime.Restart();
                 Dispose(); // uh? if the app restarts then this should be disposed anyways?
             }
         }

src/Umbraco.Core/Net/IUmbracoApplicationLifetime.cs

@@ -2,7 +2,13 @@ namespace Umbraco.Net
 {
     public interface IUmbracoApplicationLifetime
     {
+        /// <summary>
+        /// A value indicating whether the application is restarting after the current request.
+        /// </summary>
         bool IsRestarting { get; }
+        /// <summary>
+        /// Terminates the current application. The application restarts the next time a request is received for it.
+        /// </summary>
         void Restart();
     }
 }

src/Umbraco.Infrastructure/Compose/ManifestWatcherComponent.cs

@@ -4,6 +4,7 @@ using Umbraco.Core.Hosting;
 using Umbraco.Core.IO;
 using Umbraco.Core.Logging;
 using Umbraco.Core.Manifest;
+using Umbraco.Net;
 
 namespace Umbraco.Core.Compose
 {
@@ -12,18 +13,18 @@ namespace Umbraco.Core.Compose
         private readonly IRuntimeState _runtimeState;
         private readonly ILogger _logger;
         private readonly IIOHelper _ioHelper;
-        private readonly IHostingEnvironment _hostingEnvironment;
+        private readonly IUmbracoApplicationLifetime _umbracoApplicationLifetime;
 
         // if configured and in debug mode, a ManifestWatcher watches App_Plugins folders for
         // package.manifest chances and restarts the application on any change
         private ManifestWatcher _mw;
 
-        public ManifestWatcherComponent(IRuntimeState runtimeState, ILogger logger, IIOHelper ioHelper, IHostingEnvironment hostingEnvironment)
+        public ManifestWatcherComponent(IRuntimeState runtimeState, ILogger logger, IIOHelper ioHelper, IUmbracoApplicationLifetime umbracoApplicationLifetime)
         {
             _runtimeState = runtimeState;
             _logger = logger;
             _ioHelper = ioHelper;
-            _hostingEnvironment = hostingEnvironment;
+            _umbracoApplicationLifetime = umbracoApplicationLifetime;
         }
 
         public void Initialize()
@@ -36,7 +37,7 @@ namespace Umbraco.Core.Compose
             var appPlugins = _ioHelper.MapPath("~/App_Plugins/");
             if (Directory.Exists(appPlugins) == false) return;
 
-            _mw = new ManifestWatcher(_logger, _hostingEnvironment);
+            _mw = new ManifestWatcher(_logger, _umbracoApplicationLifetime);
             _mw.Start(Directory.GetDirectories(appPlugins));
         }
 

src/Umbraco.Web/AspNet/AspNetHostingEnvironment.cs

@@ -49,11 +49,6 @@ namespace Umbraco.Web.Hosting
         }
 
         public string ToAbsolute(string virtualPath, string root) => VirtualPathUtility.ToAbsolute(virtualPath, root);
-        public void LazyRestartApplication()
-        {
-            HttpRuntime.UnloadAppDomain();
-        }
-
         public void RegisterObject(IRegisteredObject registeredObject)
         {
             var wrapped = new RegisteredObjectWrapper(registeredObject);