1 files changed, 121 insertions, 0 deletions
diff --git a/Jellyfin.Server/Migrations/Routines/MigrateActivityLogDb.cs b/Jellyfin.Server/Migrations/Routines/MigrateActivityLogDb.cs
new file mode 100644
index 000000000..faa163d19
--- /dev/null
+++ b/Jellyfin.Server/Migrations/Routines/MigrateActivityLogDb.cs
@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Emby.Server.Implementations.Data;
+using Jellyfin.Data.Entities;
+using Jellyfin.Server.Implementations;
+using MediaBrowser.Controller;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using SQLitePCL.pretty;
+
+namespace Jellyfin.Server.Migrations.Routines
+{
+    /// <summary>
+    /// The migration routine for migrating the activity log database to EF Core.
+    /// </summary>
+    public class MigrateActivityLogDb : IMigrationRoutine
+    {
+        private const string DbFilename = "activitylog.db";
+
+        private readonly ILogger<MigrateActivityLogDb> _logger;
+        private readonly JellyfinDbProvider _provider;
+        private readonly IServerApplicationPaths _paths;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MigrateActivityLogDb"/> class.
+        /// </summary>
+        /// <param name="logger">The logger.</param>
+        /// <param name="paths">The server application paths.</param>
+        /// <param name="provider">The database provider.</param>
+        public MigrateActivityLogDb(ILogger<MigrateActivityLogDb> logger, IServerApplicationPaths paths, JellyfinDbProvider provider)
+        {
+            _logger = logger;
+            _provider = provider;
+            _paths = paths;
+        }
+
+        /// <inheritdoc/>
+        public Guid Id => Guid.Parse("3793eb59-bc8c-456c-8b9f-bd5a62a42978");
+
+        /// <inheritdoc/>
+        public string Name => "MigrateActivityLogDatabase";
+
+        /// <inheritdoc/>
+        public void Perform()
+        {
+            var logLevelDictionary = new Dictionary<string, LogLevel>(StringComparer.OrdinalIgnoreCase)
+            {
+                { "None", LogLevel.None },
+                { "Trace", LogLevel.Trace },
+                { "Debug", LogLevel.Debug },
+                { "Information", LogLevel.Information },
+                { "Info", LogLevel.Information },
+                { "Warn", LogLevel.Warning },
+                { "Warning", LogLevel.Warning },
+                { "Error", LogLevel.Error },
+                { "Critical", LogLevel.Critical }
+            };
+
+            var dataPath = _paths.DataPath;
+            using (var connection = SQLite3.Open(
+                Path.Combine(dataPath, DbFilename),
+                ConnectionFlags.ReadOnly,
+                null))
+            {
+                _logger.LogWarning("Migrating the activity database may take a while, do not stop Jellyfin.");
+                using var dbContext = _provider.CreateContext();
+
+                var queryResult = connection.Query("SELECT * FROM ActivityLog ORDER BY Id ASC");
+
+                // Make sure that the database is empty in case of failed migration due to power outages, etc.
+                dbContext.ActivityLogs.RemoveRange(dbContext.ActivityLogs);
+                dbContext.SaveChanges();
+                // Reset the autoincrement counter
+                dbContext.Database.ExecuteSqlRaw("UPDATE sqlite_sequence SET seq = 0 WHERE name = 'ActivityLog';");
+                dbContext.SaveChanges();
+
+                foreach (var entry in queryResult)
+                {
+                    var newEntry = new ActivityLog(
+                        entry[1].ToString(),
+                        entry[4].ToString(),
+                        entry[6].SQLiteType == SQLiteType.Null ? Guid.Empty : Guid.Parse(entry[6].ToString()))
+                    {
+                        DateCreated = entry[7].ReadDateTime(),
+                        LogSeverity = logLevelDictionary[entry[8].ToString()]
+                    };
+
+                    if (entry[2].SQLiteType != SQLiteType.Null)
+                    {
+                        newEntry.Overview = entry[2].ToString();
+                    }
+
+                    if (entry[3].SQLiteType != SQLiteType.Null)
+                    {
+                        newEntry.ShortOverview = entry[3].ToString();
+                    }
+
+                    if (entry[5].SQLiteType != SQLiteType.Null)
+                    {
+                        newEntry.ItemId = entry[5].ToString();
+                    }
+
+                    // Since code references the Id of the entries, this needs to be inserted in order.
+                    // In order to do that, this is needed because EF Core doesn't provide a way to guarantee ordering for bulk inserts.
+                    dbContext.ActivityLogs.Add(newEntry);
+                    dbContext.SaveChanges();
+                }
+            }
+
+            try
+            {
+                File.Move(Path.Combine(dataPath, DbFilename), Path.Combine(dataPath, DbFilename + ".old"));
+            }
+            catch (IOException e)
+            {
+                _logger.LogError(e, "Error renaming legacy activity log database to 'activitylog.db.old'");
+            }
+        }
+    }
+}