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@ -1,144 +0,0 @@
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Persistence
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{
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public static class UserDataMigration
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{
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/// <summary>
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/// Migrates the specified old file.
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/// </summary>
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/// <param name="oldFile">The old file.</param>
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/// <param name="newDatabase">The new database.</param>
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/// <param name="logger">The logger.</param>
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/// <param name="json">The json.</param>
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/// <returns>Task.</returns>
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public static async Task Migrate(string oldFile, IDbConnection newDatabase, ILogger logger, IJsonSerializer json)
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{
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var oldDb = await SqliteExtensions.ConnectToDb(oldFile).ConfigureAwait(false);
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using (oldDb)
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{
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IDbTransaction transaction = null;
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var data = GetAllUserData(oldDb, json).ToList();
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try
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{
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transaction = newDatabase.BeginTransaction();
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foreach (var userdata in data)
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{
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PersistUserData(userdata, newDatabase, transaction);
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}
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transaction.Commit();
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}
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catch (OperationCanceledException)
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{
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if (transaction != null)
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{
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transaction.Rollback();
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}
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throw;
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}
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catch (Exception e)
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{
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logger.ErrorException("Failed to save user data:", e);
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if (transaction != null)
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{
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transaction.Rollback();
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}
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throw;
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}
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finally
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{
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if (transaction != null)
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{
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transaction.Dispose();
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}
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}
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}
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var backupFile = Path.Combine(Path.GetDirectoryName(oldFile), "userdata_v1.db.bak");
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if (File.Exists(backupFile))
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{
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File.Delete(backupFile);
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}
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File.Move(oldFile, backupFile);
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}
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/// <summary>
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/// Gets all user data.
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/// </summary>
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/// <param name="oldDatabase">The old database.</param>
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/// <param name="jsonSerializer">The json serializer.</param>
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/// <returns>IEnumerable{UserItemData}.</returns>
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private static IEnumerable<UserItemData> GetAllUserData(IDbConnection oldDatabase, IJsonSerializer jsonSerializer)
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{
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using (var cmd = oldDatabase.CreateCommand())
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{
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cmd.CommandText = "select userId,key,data from userdata";
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using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
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{
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while (reader.Read())
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{
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var userId = reader.GetGuid(0);
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var key = reader.GetString(1);
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using (var stream = reader.GetMemoryStream(2))
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{
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var userData = jsonSerializer.DeserializeFromStream<UserItemData>(stream);
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userData.UserId = userId;
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userData.Key = key;
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yield return userData;
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}
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}
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}
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}
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}
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/// <summary>
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/// Persists the user data.
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/// </summary>
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/// <param name="userData">The user data.</param>
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/// <param name="database">The database.</param>
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/// <param name="transaction">The transaction.</param>
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private static void PersistUserData(UserItemData userData, IDbConnection database, IDbTransaction transaction)
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{
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using (var cmd = database.CreateCommand())
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{
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cmd.CommandText = "replace into userdata (key, userId, rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate) values (@key, @userId, @rating,@played,@playCount,@isFavorite,@playbackPositionTicks,@lastPlayedDate)";
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cmd.Parameters.Add(cmd, "@key", DbType.String).Value = userData.Key;
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cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userData.UserId;
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cmd.Parameters.Add(cmd, "@rating", DbType.Double).Value = userData.Rating;
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cmd.Parameters.Add(cmd, "@played", DbType.Boolean).Value = userData.Played;
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cmd.Parameters.Add(cmd, "@playCount", DbType.Int32).Value = userData.PlayCount;
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cmd.Parameters.Add(cmd, "@isFavorite", DbType.Boolean).Value = userData.IsFavorite;
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cmd.Parameters.Add(cmd, "@playbackPositionTicks", DbType.Int64).Value = userData.PlaybackPositionTicks;
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cmd.Parameters.Add(cmd, "@lastPlayedDate", DbType.DateTime).Value = userData.LastPlayedDate;
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cmd.Transaction = transaction;
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cmd.ExecuteNonQuery();
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}
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}
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}
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}
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Luke Pulverenti
11 years ago