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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Emby.Server.Implementations;
using Emby.Server.Implementations.Serialization;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Model.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Server.Migrations
{
/// <summary>
/// The class that knows which migrations to apply and how to apply them.
/// </summary>
public sealed class MigrationRunner
{
/// <summary>
/// The list of known pre-startup migrations, in order of applicability.
/// </summary>
private static readonly Type[] _preStartupMigrationTypes =
{
typeof(PreStartupRoutines.CreateNetworkConfiguration)
};
/// <summary>
/// The list of known migrations, in order of applicability.
/// </summary>
private static readonly Type[] _migrationTypes =
{
typeof(Routines.DisableTranscodingThrottling),
typeof(Routines.CreateUserLoggingConfigFile),
typeof(Routines.MigrateActivityLogDb),
typeof(Routines.RemoveDuplicateExtras),
typeof(Routines.AddDefaultPluginRepository),
typeof(Routines.MigrateUserDb),
typeof(Routines.ReaddDefaultPluginRepository),
typeof(Routines.MigrateDisplayPreferencesDb),
typeof(Routines.RemoveDownloadImagesInAdvance),
typeof(Routines.AddPeopleQueryIndex),
typeof(Routines.MigrateAuthenticationDb)
};
/// <summary>
/// Run all needed migrations.
/// </summary>
/// <param name="host">CoreAppHost that hosts current version.</param>
/// <param name="loggerFactory">Factory for making the logger.</param>
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 = host.ConfigurationManager.GetConfiguration<MigrationOptions>(MigrationsListStore.StoreKey);
HandleStartupWizardCondition(migrations, migrationOptions, host.ConfigurationManager.Configuration.IsStartupWizardCompleted, logger);
PerformMigrations(migrations, migrationOptions, options => host.ConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, options), logger);
}
/// <summary>
/// Run all needed pre-startup migrations.
/// </summary>
/// <param name="appPaths">Application paths.</param>
/// <param name="loggerFactory">Factory for making the logger.</param>
public static void RunPreStartup(ServerApplicationPaths appPaths, ILoggerFactory loggerFactory)
{
var logger = loggerFactory.CreateLogger<MigrationRunner>();
var migrations = _preStartupMigrationTypes
.Select(m => Activator.CreateInstance(m, appPaths, loggerFactory))
.OfType<IMigrationRoutine>()
.ToArray();
var xmlSerializer = new MyXmlSerializer();
var migrationConfigPath = Path.Join(appPaths.ConfigurationDirectoryPath, MigrationsListStore.StoreKey.ToLowerInvariant() + ".xml");
var migrationOptions = File.Exists(migrationConfigPath)
? (MigrationOptions)xmlSerializer.DeserializeFromFile(typeof(MigrationOptions), migrationConfigPath)!
: new MigrationOptions();
// We have to deserialize it manually since the configuration manager may overwrite it
var serverConfig = File.Exists(appPaths.SystemConfigurationFilePath)
? (ServerConfiguration)xmlSerializer.DeserializeFromFile(typeof(ServerConfiguration), appPaths.SystemConfigurationFilePath)!
: new ServerConfiguration();
HandleStartupWizardCondition(migrations, migrationOptions, serverConfig.IsStartupWizardCompleted, logger);
PerformMigrations(migrations, migrationOptions, options => xmlSerializer.SerializeToFile(options, migrationConfigPath), logger);
}
private static void HandleStartupWizardCondition(IEnumerable<IMigrationRoutine> migrations, MigrationOptions migrationOptions, bool isStartWizardCompleted, ILogger logger)
{
if (isStartWizardCompleted || migrationOptions.Applied.Count != 0)
{
return;
}
// If startup wizard is not finished, this is a fresh install.
var onlyOldInstalls = migrations.Where(m => !m.PerformOnNewInstall).ToArray();
logger.LogInformation("Marking following migrations as applied because this is a fresh install: {@OnlyOldInstalls}", onlyOldInstalls.Select(m => m.Name));
migrationOptions.Applied.AddRange(onlyOldInstalls.Select(m => (m.Id, m.Name)));
}
private static void PerformMigrations(IMigrationRoutine[] migrations, MigrationOptions migrationOptions, Action<MigrationOptions> saveConfiguration, ILogger logger)
{
var appliedMigrationIds = migrationOptions.Applied.Select(m => m.Id).ToHashSet();
for (var i = 0; i < migrations.Length; i++)
{
var migrationRoutine = migrations[i];
if (appliedMigrationIds.Contains(migrationRoutine.Id))
{
logger.LogDebug("Skipping migration '{Name}' since it is already applied", migrationRoutine.Name);
continue;
}
logger.LogInformation("Applying migration '{Name}'", migrationRoutine.Name);
try
{
migrationRoutine.Perform();
}
catch (Exception ex)
{
logger.LogError(ex, "Could not apply migration '{Name}'", migrationRoutine.Name);
throw;
}
// Mark the migration as completed
logger.LogInformation("Migration '{Name}' applied successfully", migrationRoutine.Name);
migrationOptions.Applied.Add((migrationRoutine.Id, migrationRoutine.Name));
saveConfiguration(migrationOptions);
logger.LogDebug("Migration '{Name}' marked as applied in configuration.", migrationRoutine.Name);
}
}
}
}
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