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using System;
using System.Linq;
using MediaBrowser.Common.Configuration;
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 migrations, in order of applicability.
/// </summary>
internal static readonly IUpdater[] Migrations =
{
new Routines.DisableTranscodingThrottling()
};
/// <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 migrationOptions = ((IConfigurationManager)host.ServerConfigurationManager).GetConfiguration<MigrationOptions>(MigrationsListStore.StoreKey);
if (!host.ServerConfigurationManager.Configuration.IsStartupWizardCompleted && migrationOptions.Applied.Length == 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 fresh install");
migrationOptions.Applied = Migrations.Select(m => m.Name).ToArray();
host.ServerConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
return;
}
var applied = migrationOptions.Applied.ToList();
for (var i = 0; i < Migrations.Length; i++)
{
var updater = Migrations[i];
if (applied.Contains(updater.Name))
{
logger.LogDebug("Skipping migration '{Name}' since it is already applied", updater.Name);
continue;
}
logger.LogInformation("Applying migration '{Name}'", updater.Name);
try
{
updater.Perform(host, logger);
}
catch (Exception ex)
{
logger.LogError(ex, "Could not apply migration '{Name}'", updater.Name);
throw;
}
logger.LogInformation("Migration '{Name}' applied successfully", updater.Name);
applied.Add(updater.Name);
}
if (applied.Count > migrationOptions.Applied.Length)
{
logger.LogInformation("Some migrations were run, saving the state");
migrationOptions.Applied = applied.ToArray();
host.ServerConfigurationManager.SaveConfiguration(MigrationsListStore.StoreKey, migrationOptions);
}
}
}
}
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