Add backup export/import to the admin panel setup page

src/Dapr/AdminPanel.Host/Program.cs

@@ -7,6 +7,7 @@
 using MUnique.OpenMU.AdminPanel.Host;
 using MUnique.OpenMU.Dapr.Common;
 using MUnique.OpenMU.Interfaces;
+using MUnique.OpenMU.Persistence;
 using MUnique.OpenMU.PlugIns;
 using MUnique.OpenMU.ServerClients;
 using MUnique.OpenMU.Persistence.EntityFramework.AdminAuth;
@@ -25,6 +26,7 @@
     .AddSingleton<ILoginServer, LoginServer>()
     .AddSingleton<IGameServerInstanceManager, DockerGameServerInstanceManager>()
     .AddSingleton<IConnectServerInstanceManager, DockerConnectServerInstanceManager>()
+    .AddSingleton<IBackupService, BackupService>()
     .AddAdminUserRepository();
 
 builder.AddAdminPanel();

src/Dapr/Common/Extensions.cs

@@ -1,4 +1,4 @@
-// <copyright file="Extensions.cs" company="MUnique">
+// <copyright file="Extensions.cs" company="MUnique">
 // Licensed under the MIT License. See LICENSE file in the project root for full license information.
 // </copyright>
 
@@ -14,7 +14,9 @@ namespace MUnique.OpenMU.Dapr.Common;
 using MUnique.OpenMU.Interfaces;
 using MUnique.OpenMU.Network;
 using MUnique.OpenMU.Persistence;
+using MUnique.OpenMU.Persistence.AdminAuth;
 using MUnique.OpenMU.Persistence.EntityFramework;
+using MUnique.OpenMU.Persistence.EntityFramework.AdminAuth;
 using MUnique.OpenMU.PlugIns;
 using Nito.AsyncEx.Synchronous;
 using OpenTelemetry.Exporter;
@@ -53,7 +55,12 @@ public static IServiceCollection AddPeristenceProvider(this IServiceCollection s
             .AddSingleton<IMigratableDatabaseContextProvider, PersistenceContextProvider>()
             .AddSingleton(s => (PersistenceContextProvider)s.GetService<IMigratableDatabaseContextProvider>()!)
             .AddSingleton(s => (IPersistenceContextProvider)s.GetService<IMigratableDatabaseContextProvider>()!)
-            .AddSingleton(s => new Lazy<IPersistenceContextProvider>(s.GetRequiredService<IPersistenceContextProvider>));
+            .AddSingleton(s => new Lazy<IPersistenceContextProvider>(s.GetRequiredService<IPersistenceContextProvider>))
+            .AddAdminUserRepository()
+            .AddSingleton<IBackupService>(s => new BackupService(
+                s.GetRequiredService<IPersistenceContextProvider>(),
+                s.GetRequiredService<IAdminUserRepository>()))
+            .AddSingleton<IDatabaseSnapshotService, DatabaseSnapshotService>();
     }
 
     /// <summary>

src/GameServer/GameServer.cs

@@ -27,7 +27,7 @@ namespace MUnique.OpenMU.GameServer;
 /// <summary>
 /// The game server to which game clients can connect.
 /// </summary>
-public sealed class GameServer : IGameServer, IDisposable, IGameServerContextProvider, IConnectionSource
+public sealed class GameServer : IGameServer, IDisposable, IAsyncDisposable, IGameServerContextProvider, IConnectionSource
 {
     private readonly ILogger<GameServer> _logger;
 
@@ -458,6 +458,22 @@ public void Dispose()
         (this._gameContext as IDisposable)?.Dispose();
     }
 
+    /// <inheritdoc />
+    /// <remarks>
+    /// In contrast to <see cref="Dispose"/>, this also stops the periodic tasks of the game context.
+    /// </remarks>
+    public async ValueTask DisposeAsync()
+    {
+        if (this._gameContext is IAsyncDisposable asyncDisposable)
+        {
+            await asyncDisposable.DisposeAsync().ConfigureAwait(false);
+        }
+        else
+        {
+            this.Dispose();
+        }
+    }
+
     private async ValueTask RemovePlayerFromGuildAsync(Player player, bool unregisterFromContext = true)
     {
         if (unregisterFromContext && player.GuildStatus?.GuildId is not null)

src/Persistence/AdminAuth/AdminUser.cs

@@ -15,7 +15,7 @@ namespace MUnique.OpenMU.Persistence.AdminAuth;
 /// Additionally, the admin panel must be usable before the game database has been initialized,
 /// which wouldn't be possible if the credentials were stored in the game data schema.
 /// </remarks>
-public class AdminUser
+public class AdminUser : IIdentifiable
 {
     /// <summary>
     /// Gets or sets the identifier of this user.

src/Persistence/BackupOptions.cs

@@ -0,0 +1,23 @@
+// <copyright file="BackupOptions.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.Persistence;
+
+/// <summary>
+/// Options which define what a backup contains.
+/// </summary>
+public sealed record BackupOptions
+{
+    /// <summary>
+    /// Gets the default options, which include everything.
+    /// </summary>
+    public static BackupOptions Default { get; } = new();
+
+    /// <summary>
+    /// Gets a value indicating whether the accounts are included in the backup.
+    /// Exporting the accounts of a running server takes the most time, so it can be
+    /// skipped when only the configuration should be transferred.
+    /// </summary>
+    public bool IncludeAccounts { get; init; } = true;
+}