Fix random failing of tests

Fully initialize the configuration manager at the init stage

```
Failed Jellyfin.Server.Integration.Tests.Controllers.ActivityLogControllerTests.ActivityLog_GetEntries_Ok [2 s]
  Error Message:
   MediaBrowser.Common.Extensions.ResourceNotFoundException : Configuration with key metadata not found.
  Stack Trace:
     at Emby.Server.Implementations.AppBase.BaseConfigurationManager.<>c__DisplayClass43_0.<GetConfiguration>b__0(String k) in D:\a\1\s\Emby.Server.Implementations\AppBase\BaseConfigurationManager.cs:line 309
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Emby.Server.Implementations.AppBase.BaseConfigurationManager.GetConfiguration(String key) in D:\a\1\s\Emby.Server.Implementations\AppBase\BaseConfigurationManager.cs:line 300
   at MediaBrowser.Common.Configuration.ConfigurationManagerExtensions.GetConfiguration[T](IConfigurationManager manager, String key) in D:\a\1\s\MediaBrowser.Common\Configuration\IConfigurationManager.cs:line 88
   at MediaBrowser.Controller.Library.MetadataConfigurationExtensions.GetMetadataConfiguration(IConfigurationManager config) in D:\a\1\s\MediaBrowser.Controller\Library\MetadataConfigurationStore.cs:line 28
   at Emby.Server.Implementations.Library.ResolverHelper.SetDateCreated(BaseItem item, IFileSystem fileSystem, FileSystemMetadata info) in D:\a\1\s\Emby.Server.Implementations\Library\ResolverHelper.cs:line 159
   at Emby.Server.Implementations.Library.ResolverHelper.EnsureDates(IFileSystem fileSystem, BaseItem item, ItemResolveArgs args) in D:\a\1\s\Emby.Server.Implementations\Library\ResolverHelper.cs:line 153
   at Emby.Server.Implementations.Library.ResolverHelper.SetInitialItemValues(BaseItem item, ItemResolveArgs args, IFileSystem fileSystem, ILibraryManager libraryManager) in D:\a\1\s\Emby.Server.Implementations\Library\ResolverHelper.cs:line 81
   at Emby.Server.Implementations.Library.LibraryManager.ResolveItem(ItemResolveArgs args, IItemResolver[] resolvers) in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 480
   at Emby.Server.Implementations.Library.LibraryManager.ResolvePath(FileSystemMetadata fileInfo, IDirectoryService directoryService, IItemResolver[] resolvers, Folder parent, String collectionType, LibraryOptions libraryOptions) in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 618
   at Emby.Server.Implementations.Library.LibraryManager.ResolvePath(FileSystemMetadata fileInfo, Folder parent) in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 536
   at Emby.Server.Implementations.Library.LibraryManager.CreateRootFolder() in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 732
   at Emby.Server.Implementations.Library.LibraryManager.get_RootFolder() in D:\a\1\s\Emby.Server.Implementations\Library\LibraryManager.cs:line 180
   at Emby.Server.Implementations.IO.LibraryMonitor.Start() in D:\a\1\s\Emby.Server.Implementations\IO\LibraryMonitor.cs:line 135
   at Emby.Server.Implementations.IO.LibraryMonitorStartup.RunAsync() in D:\a\1\s\Emby.Server.Implementations\IO\LibraryMonitorStartup.cs:line 26
   at Emby.Server.Implementations.ApplicationHost.StartEntryPoints(IEnumerable`1 entryPoints, Boolean isBeforeStartup)+MoveNext() in D:\a\1\s\Emby.Server.Implementations\ApplicationHost.cs:line 541
   at System.Threading.Tasks.Task.WhenAll(IEnumerable`1 tasks)
   at Emby.Server.Implementations.ApplicationHost.RunStartupTasksAsync(CancellationToken cancellationToken) in D:\a\1\s\Emby.Server.Implementations\ApplicationHost.cs:line 525
   at Jellyfin.Server.Integration.Tests.JellyfinApplicationFactory.CreateServer(IWebHostBuilder builder) in D:\a\1\s\tests\Jellyfin.Server.Integration.Tests\JellyfinApplicationFactory.cs:line 101
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.EnsureServer()
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateDefaultClient(DelegatingHandler[] handlers)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateDefaultClient(Uri baseAddress, DelegatingHandler[] handlers)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateClient(WebApplicationFactoryClientOptions options)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.CreateClient()
   at Jellyfin.Server.Integration.Tests.Controllers.ActivityLogControllerTests.ActivityLog_GetEntries_Ok() in D:\a\1\s\tests\Jellyfin.Server.Integration.Tests\Controllers\ActivityLogControllerTests.cs:line 21
--- End of stack trace from previous location ---

```

Emby.Server.Implementations/ApplicationHost.cs

@@ -210,7 +210,7 @@ namespace Emby.Server.Implementations
         /// Gets or sets the configuration manager.
         /// </summary>
         /// <value>The configuration manager.</value>
-        protected IConfigurationManager ConfigurationManager { get; set; }
+        public ServerConfigurationManager ConfigurationManager { get; set; }
 
         /// <summary>
         /// Gets or sets the service provider.
@@ -232,12 +232,6 @@ namespace Emby.Server.Implementations
         /// </summary>
         public string PublishedServerUrl => _startupOptions.PublishedServerUrl ?? _startupConfig[UdpServer.AddressOverrideConfigKey];
 
-        /// <summary>
-        /// Gets the server configuration manager.
-        /// </summary>
-        /// <value>The server configuration manager.</value>
-        public IServerConfigurationManager ServerConfigurationManager => (IServerConfigurationManager)ConfigurationManager;
-
         /// <summary>
         /// Initializes a new instance of the <see cref="ApplicationHost"/> class.
         /// </summary>
@@ -255,43 +249,26 @@ namespace Emby.Server.Implementations
             IFileSystem fileSystem,
             IServiceCollection serviceCollection)
         {
-            _xmlSerializer = new MyXmlSerializer();
-
-            ServiceCollection = serviceCollection;
-
             ApplicationPaths = applicationPaths;
             LoggerFactory = loggerFactory;
-            _fileSystemManager = fileSystem;
-
-            ConfigurationManager = new ServerConfigurationManager(ApplicationPaths, LoggerFactory, _xmlSerializer, _fileSystemManager);
-            // Have to migrate settings here as migration subsystem not yet initialised.
-            MigrateNetworkConfiguration();
-
-            // Have to pre-register the NetworkConfigurationFactory, as the configuration sub-system is not yet initialised.
-            ConfigurationManager.RegisterConfiguration<NetworkConfigurationFactory>();
-            NetManager = new NetworkManager((IServerConfigurationManager)ConfigurationManager, LoggerFactory.CreateLogger<NetworkManager>());
-
-            Logger = LoggerFactory.CreateLogger<ApplicationHost>();
-
             _startupOptions = options;
             _startupConfig = startupConfig;
+            _fileSystemManager = fileSystem;
+            ServiceCollection = serviceCollection;
 
-            // Initialize runtime stat collection
-            if (ServerConfigurationManager.Configuration.EnableMetrics)
-            {
-                DotNetRuntimeStatsBuilder.Default().StartCollecting();
-            }
-
+            Logger = LoggerFactory.CreateLogger<ApplicationHost>();
             fileSystem.AddShortcutHandler(new MbLinkShortcutHandler(fileSystem));
 
             ApplicationVersion = typeof(ApplicationHost).Assembly.GetName().Version;
             ApplicationVersionString = ApplicationVersion.ToString(3);
             ApplicationUserAgent = Name.Replace(' ', '-') + "/" + ApplicationVersionString;
 
+            _xmlSerializer = new MyXmlSerializer();
+            ConfigurationManager = new ServerConfigurationManager(ApplicationPaths, LoggerFactory, _xmlSerializer, _fileSystemManager);
             _pluginManager = new PluginManager(
                 LoggerFactory.CreateLogger<PluginManager>(),
                 this,
-                ServerConfigurationManager.Configuration,
+                ConfigurationManager.Configuration,
                 ApplicationPaths.PluginsPath,
                 ApplicationVersion);
         }
@@ -306,9 +283,9 @@ namespace Emby.Server.Implementations
             if (!File.Exists(path))
             {
                 var networkSettings = new NetworkConfiguration();
-                ClassMigrationHelper.CopyProperties(ServerConfigurationManager.Configuration, networkSettings);
+                ClassMigrationHelper.CopyProperties(ConfigurationManager.Configuration, networkSettings);
                 _xmlSerializer.SerializeToFile(networkSettings, path);
-                Logger?.LogDebug("Successfully migrated network settings.");
+                Logger.LogDebug("Successfully migrated network settings.");
             }
         }
 
@@ -545,7 +522,21 @@ namespace Emby.Server.Implementations
         /// <inheritdoc/>
         public void Init()
         {
-            var networkConfiguration = ServerConfigurationManager.GetNetworkConfiguration();
+            DiscoverTypes();
+
+            ConfigurationManager.AddParts(GetExports<IConfigurationFactory>());
+
+            // Have to migrate settings here as migration subsystem not yet initialised.
+            MigrateNetworkConfiguration();
+            NetManager = new NetworkManager(ConfigurationManager, LoggerFactory.CreateLogger<NetworkManager>());
+
+            // Initialize runtime stat collection
+            if (ConfigurationManager.Configuration.EnableMetrics)
+            {
+                DotNetRuntimeStatsBuilder.Default().StartCollecting();
+            }
+
+            var networkConfiguration = ConfigurationManager.GetNetworkConfiguration();
             HttpPort = networkConfiguration.HttpServerPortNumber;
             HttpsPort = networkConfiguration.HttpsPortNumber;
 
@@ -563,8 +554,6 @@ namespace Emby.Server.Implementations
             };
             Certificate = GetCertificate(CertificateInfo);
 
-            DiscoverTypes();
-
             RegisterServices();
 
             _pluginManager.RegisterServices(ServiceCollection);
@@ -579,7 +568,8 @@ namespace Emby.Server.Implementations
 
             ServiceCollection.AddMemoryCache();
 
-            ServiceCollection.AddSingleton(ConfigurationManager);
+            ServiceCollection.AddSingleton<IServerConfigurationManager>(ConfigurationManager);
+            ServiceCollection.AddSingleton<IConfigurationManager>(ConfigurationManager);
             ServiceCollection.AddSingleton<IApplicationHost>(this);
             ServiceCollection.AddSingleton<IPluginManager>(_pluginManager);
             ServiceCollection.AddSingleton<IApplicationPaths>(ApplicationPaths);
@@ -606,8 +596,6 @@ namespace Emby.Server.Implementations
             ServiceCollection.AddSingleton<IServerApplicationHost>(this);
             ServiceCollection.AddSingleton<IServerApplicationPaths>(ApplicationPaths);
 
-            ServiceCollection.AddSingleton(ServerConfigurationManager);
-
             ServiceCollection.AddSingleton<ILocalizationManager, LocalizationManager>();
 
             ServiceCollection.AddSingleton<IBlurayExaminer, BdInfoExaminer>();
@@ -796,7 +784,7 @@ namespace Emby.Server.Implementations
         {
             // For now there's no real way to inject these properly
             BaseItem.Logger = Resolve<ILogger<BaseItem>>();
-            BaseItem.ConfigurationManager = ServerConfigurationManager;
+            BaseItem.ConfigurationManager = ConfigurationManager;
             BaseItem.LibraryManager = Resolve<ILibraryManager>();
             BaseItem.ProviderManager = Resolve<IProviderManager>();
             BaseItem.LocalizationManager = Resolve<ILocalizationManager>();
@@ -818,13 +806,12 @@ namespace Emby.Server.Implementations
         /// </summary>
         private void FindParts()
         {
-            if (!ServerConfigurationManager.Configuration.IsPortAuthorized)
+            if (!ConfigurationManager.Configuration.IsPortAuthorized)
             {
-                ServerConfigurationManager.Configuration.IsPortAuthorized = true;
+                ConfigurationManager.Configuration.IsPortAuthorized = true;
                 ConfigurationManager.SaveConfiguration();
             }
 
-            ConfigurationManager.AddParts(GetExports<IConfigurationFactory>());
             _pluginManager.CreatePlugins();
 
             _urlPrefixes = GetUrlPrefixes().ToArray();
@@ -928,7 +915,7 @@ namespace Emby.Server.Implementations
         protected void OnConfigurationUpdated(object sender, EventArgs e)
         {
             var requiresRestart = false;
-            var networkConfiguration = ServerConfigurationManager.GetNetworkConfiguration();
+            var networkConfiguration = ConfigurationManager.GetNetworkConfiguration();
 
             // Don't do anything if these haven't been set yet
             if (HttpPort != 0 && HttpsPort != 0)
@@ -937,10 +924,10 @@ namespace Emby.Server.Implementations
                 if (networkConfiguration.HttpServerPortNumber != HttpPort ||
                     networkConfiguration.HttpsPortNumber != HttpsPort)
                 {
-                    if (ServerConfigurationManager.Configuration.IsPortAuthorized)
+                    if (ConfigurationManager.Configuration.IsPortAuthorized)
                     {
-                        ServerConfigurationManager.Configuration.IsPortAuthorized = false;
-                        ServerConfigurationManager.SaveConfiguration();
+                        ConfigurationManager.Configuration.IsPortAuthorized = false;
+                        ConfigurationManager.SaveConfiguration();
 
                         requiresRestart = true;
                     }
@@ -1156,7 +1143,7 @@ namespace Emby.Server.Implementations
         }
 
         /// <inheritdoc/>
-        public bool ListenWithHttps => Certificate != null && ServerConfigurationManager.GetNetworkConfiguration().EnableHttps;
+        public bool ListenWithHttps => Certificate != null && ConfigurationManager.GetNetworkConfiguration().EnableHttps;
 
         /// <inheritdoc/>
         public string GetSmartApiUrl(IPAddress ipAddress, int? port = null)
@@ -1240,14 +1227,14 @@ namespace Emby.Server.Implementations
                 Scheme = scheme ?? (ListenWithHttps ? Uri.UriSchemeHttps : Uri.UriSchemeHttp),
                 Host = host,
                 Port = port ?? (ListenWithHttps ? HttpsPort : HttpPort),
-                Path = ServerConfigurationManager.GetNetworkConfiguration().BaseUrl
+                Path = ConfigurationManager.GetNetworkConfiguration().BaseUrl
             }.ToString().TrimEnd('/');
         }
 
         public string FriendlyName =>
-            string.IsNullOrEmpty(ServerConfigurationManager.Configuration.ServerName)
+            string.IsNullOrEmpty(ConfigurationManager.Configuration.ServerName)
                 ? Environment.MachineName
-                : ServerConfigurationManager.Configuration.ServerName;
+                : ConfigurationManager.Configuration.ServerName;
 
         /// <summary>
         /// Shuts down.

Jellyfin.Server/Migrations/MigrationRunner.cs

@@ -40,15 +40,15 @@ namespace Jellyfin.Server.Migrations
                 .Select(m => ActivatorUtilities.CreateInstance(host.ServiceProvider, m))
                 .OfType<IMigrationRoutine>()
                 .ToArray();
-            var migrationOptions = ((IConfigurationManager)host.ServerConfigurationManager).GetConfiguration<MigrationOptions>(MigrationsListStore.StoreKey);
+            var migrationOptions = ((IConfigurationManager)host.ConfigurationManager).GetConfiguration<MigrationOptions>(MigrationsListStore.StoreKey);
 
-            if (!host.ServerConfigurationManager.Configuration.IsStartupWizardCompleted && migrationOptions.Applied.Count == 0)
+            if (!host.ConfigurationManager.Configuration.IsStartupWizardCompleted && migrationOptions.Applied.Count == 0)
             {
                 // If startup wizard is not finished, this is a fresh install.
                 // Don't run any migrations, just mark all of them as applied.
                 logger.LogInformation("Marking all known migrations as applied because this is a fresh install");
                 migrationOptions.Applied.AddRange(migrations.Where(m => !m.PerformOnNewInstall).Select(m => (m.Id, m.Name)));
-                host.ServerConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
+                host.ConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
             }
 
             var appliedMigrationIds = migrationOptions.Applied.Select(m => m.Id).ToHashSet();
@@ -77,7 +77,7 @@ namespace Jellyfin.Server.Migrations
                 // Mark the migration as completed
                 logger.LogInformation("Migration '{Name}' applied successfully", migrationRoutine.Name);
                 migrationOptions.Applied.Add((migrationRoutine.Id, migrationRoutine.Name));
-                host.ServerConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
+                host.ConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
                 logger.LogDebug("Migration '{Name}' marked as applied in configuration.", migrationRoutine.Name);
             }
         }

Jellyfin.Server/Program.cs

@@ -173,7 +173,7 @@ namespace Jellyfin.Server
                 // If hosting the web client, validate the client content path
                 if (startupConfig.HostWebClient())
                 {
-                    string? webContentPath = appHost.ServerConfigurationManager.ApplicationPaths.WebPath;
+                    string? webContentPath = appHost.ConfigurationManager.ApplicationPaths.WebPath;
                     if (!Directory.Exists(webContentPath) || Directory.GetFiles(webContentPath).Length == 0)
                     {
                         throw new InvalidOperationException(

MediaBrowser.Controller/Library/MetadataConfigurationExtensions.cs

@@ -0,0 +1,15 @@
+#pragma warning disable CS1591
+
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Model.Configuration;
+
+namespace MediaBrowser.Controller.Library
+{
+    public static class MetadataConfigurationExtensions
+    {
+        public static MetadataConfiguration GetMetadataConfiguration(this IConfigurationManager config)
+        {
+            return config.GetConfiguration<MetadataConfiguration>("metadata");
+        }
+    }
+}

MediaBrowser.Controller/Library/MetadataConfigurationStore.cs

@@ -14,18 +14,10 @@ namespace MediaBrowser.Controller.Library
             {
                 new ConfigurationStore
                 {
-                     Key = "metadata",
-                     ConfigurationType = typeof(MetadataConfiguration)
+                    Key = "metadata",
+                    ConfigurationType = typeof(MetadataConfiguration)
                 }
             };
         }
     }
-
-    public static class MetadataConfigurationExtensions
-    {
-        public static MetadataConfiguration GetMetadataConfiguration(this IConfigurationManager config)
-        {
-            return config.GetConfiguration<MetadataConfiguration>("metadata");
-        }
-    }
 }