Use dependency injection to construct migration routines

Jellyfin.Server/Migrations/IMigrationRoutine.cs

@@ -21,8 +21,6 @@ namespace Jellyfin.Server.Migrations
         /// <summary>
         /// Execute the migration routine.
         /// </summary>
-        /// <param name="host">Host that hosts current version.</param>
+        public void Perform();
-        /// <param name="logger">Host logger.</param>
-        public void Perform(CoreAppHost host, ILogger logger);
     }
 }

Jellyfin.Server/Migrations/MigrationRunner.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Linq;
 using MediaBrowser.Common.Configuration;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 
 namespace Jellyfin.Server.Migrations
@@ -13,10 +14,10 @@ namespace Jellyfin.Server.Migrations
         /// <summary>
         /// The list of known migrations, in order of applicability.
         /// </summary>
-        internal static readonly IMigrationRoutine[] Migrations =
+        private static readonly Type[] _migrationTypes =
         {
-            new Routines.DisableTranscodingThrottling(),
+            typeof(Routines.DisableTranscodingThrottling),
-            new Routines.CreateUserLoggingConfigFile()
+            typeof(Routines.CreateUserLoggingConfigFile)
         };
 
         /// <summary>
@@ -27,6 +28,10 @@ namespace Jellyfin.Server.Migrations
         public static void Run(CoreAppHost host, ILoggerFactory loggerFactory)
         {
             var logger = loggerFactory.CreateLogger<MigrationRunner>();
+            var migrations = _migrationTypes
+                .Select(m => ActivatorUtilities.CreateInstance(host.ServiceProvider, m))
+                .OfType<IMigrationRoutine>()
+                .ToArray();
             var migrationOptions = ((IConfigurationManager)host.ServerConfigurationManager).GetConfiguration<MigrationOptions>(MigrationsListStore.StoreKey);
 
             if (!host.ServerConfigurationManager.Configuration.IsStartupWizardCompleted && migrationOptions.Applied.Count == 0)
@@ -34,16 +39,16 @@ namespace Jellyfin.Server.Migrations
                 // 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.Select(m => (m.Id, m.Name)));
+                migrationOptions.Applied.AddRange(migrations.Select(m => (m.Id, m.Name)));
                 host.ServerConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
                 return;
             }
 
             var appliedMigrationIds = migrationOptions.Applied.Select(m => m.Id).ToHashSet();
 
-            for (var i = 0; i < Migrations.Length; i++)
+            for (var i = 0; i < migrations.Length; i++)
             {
-                var migrationRoutine = Migrations[i];
+                var migrationRoutine = migrations[i];
                 if (appliedMigrationIds.Contains(migrationRoutine.Id))
                 {
                     logger.LogDebug("Skipping migration '{Name}' since it is already applied", migrationRoutine.Name);
@@ -54,7 +59,7 @@ namespace Jellyfin.Server.Migrations
 
                 try
                 {
-                    migrationRoutine.Perform(host, logger);
+                    migrationRoutine.Perform();
                 }
                 catch (Exception ex)
                 {

Jellyfin.Server/Migrations/Routines/CreateUserLoggingConfigFile.cs

@@ -36,6 +36,13 @@ namespace Jellyfin.Server.Migrations.Routines
             @"{""Serilog"":{""MinimumLevel"":""Information"",""WriteTo"":[{""Name"":""Console"",""Args"":{""outputTemplate"":""[{Timestamp:HH:mm:ss}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message:lj}{NewLine}{Exception}""}},{""Name"":""Async"",""Args"":{""configure"":[{""Name"":""File"",""Args"":{""path"":""%JELLYFIN_LOG_DIR%//log_.log"",""rollingInterval"":""Day"",""retainedFileCountLimit"":3,""rollOnFileSizeLimit"":true,""fileSizeLimitBytes"":100000000,""outputTemplate"":""[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz}] [{Level:u3}] [{ThreadId}] {SourceContext}:{Message}{NewLine}{Exception}""}}]}}],""Enrich"":[""FromLogContext"",""WithThreadId""]}}",
         };
 
+        private readonly IApplicationPaths _appPaths;
+
+        public CreateUserLoggingConfigFile(IApplicationPaths appPaths)
+        {
+            _appPaths = appPaths;
+        }
+
         /// <inheritdoc/>
         public Guid Id => Guid.Parse("{EF103419-8451-40D8-9F34-D1A8E93A1679}");
 
@@ -43,9 +50,9 @@ namespace Jellyfin.Server.Migrations.Routines
         public string Name => "CreateLoggingConfigHeirarchy";
 
         /// <inheritdoc/>
-        public void Perform(CoreAppHost host, ILogger logger)
+        public void Perform()
         {
-            var logDirectory = host.Resolve<IApplicationPaths>().ConfigurationDirectoryPath;
+            var logDirectory = _appPaths.ConfigurationDirectoryPath;
             var existingConfigPath = Path.Combine(logDirectory, "logging.json");
 
             // If the existing logging.json config file is unmodified, then 'reset' it by moving it to 'logging.old.json'

Jellyfin.Server/Migrations/Routines/DisableTranscodingThrottling.cs

@@ -10,6 +10,15 @@ namespace Jellyfin.Server.Migrations.Routines
     /// </summary>
     internal class DisableTranscodingThrottling : IMigrationRoutine
     {
+        private readonly ILogger _logger;
+        private readonly IConfigurationManager _configManager;
+
+        public DisableTranscodingThrottling(ILogger<DisableTranscodingThrottling> logger, IConfigurationManager configManager)
+        {
+            _logger = logger;
+            _configManager = configManager;
+        }
+
         /// <inheritdoc/>
         public Guid Id => Guid.Parse("{4124C2CD-E939-4FFB-9BE9-9B311C413638}");
 
@@ -17,16 +26,16 @@ namespace Jellyfin.Server.Migrations.Routines
         public string Name => "DisableTranscodingThrottling";
 
         /// <inheritdoc/>
-        public void Perform(CoreAppHost host, ILogger logger)
+        public void Perform()
         {
             // Set EnableThrottling to false since it wasn't used before and may introduce issues
-            var encoding = ((IConfigurationManager)host.ServerConfigurationManager).GetConfiguration<EncodingOptions>("encoding");
+            var encoding = _configManager.GetConfiguration<EncodingOptions>("encoding");
             if (encoding.EnableThrottling)
             {
-                logger.LogInformation("Disabling transcoding throttling during migration");
+                _logger.LogInformation("Disabling transcoding throttling during migration");
                 encoding.EnableThrottling = false;
 
-                host.ServerConfigurationManager.SaveConfiguration("encoding", encoding);
+                _configManager.SaveConfiguration("encoding", encoding);
             }
         }
     }