mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-09-07 03:48:06 +02:00
209 lines
6.9 KiB
C#
209 lines
6.9 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.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.Data;
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using System.Data.SQLite;
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Sqlite
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{
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/// <summary>
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/// Class SQLiteDisplayPreferencesRepository
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/// </summary>
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public class SQLiteDisplayPreferencesRepository : SqliteRepository, IDisplayPreferencesRepository
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{
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/// <summary>
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/// The repository name
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/// </summary>
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public const string RepositoryName = "SQLite";
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/// <summary>
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/// Gets the name of the repository
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/// </summary>
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/// <value>The name.</value>
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public string Name
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{
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get
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{
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return RepositoryName;
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}
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}
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/// <summary>
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/// The _json serializer
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/// </summary>
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private readonly IJsonSerializer _jsonSerializer;
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/// <summary>
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/// The _app paths
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/// </summary>
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private readonly IApplicationPaths _appPaths;
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private readonly SemaphoreSlim _writeLock = new SemaphoreSlim(1, 1);
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/// <summary>
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/// Initializes a new instance of the <see cref="SQLiteUserDataRepository" /> class.
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/// </summary>
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/// <param name="appPaths">The app paths.</param>
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/// <param name="jsonSerializer">The json serializer.</param>
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/// <param name="logManager">The log manager.</param>
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/// <exception cref="System.ArgumentNullException">
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/// jsonSerializer
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/// or
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/// appPaths
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/// </exception>
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public SQLiteDisplayPreferencesRepository(IApplicationPaths appPaths, IJsonSerializer jsonSerializer, ILogManager logManager)
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: base(logManager)
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{
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if (jsonSerializer == null)
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{
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throw new ArgumentNullException("jsonSerializer");
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}
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if (appPaths == null)
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{
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throw new ArgumentNullException("appPaths");
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}
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_jsonSerializer = jsonSerializer;
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_appPaths = appPaths;
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}
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/// <summary>
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/// Opens the connection to the database
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/// </summary>
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/// <returns>Task.</returns>
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public async Task Initialize()
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{
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var dbFile = Path.Combine(_appPaths.DataPath, "displaypreferences.db");
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await ConnectToDb(dbFile).ConfigureAwait(false);
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string[] queries = {
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"create table if not exists displaypreferences (id GUID, data BLOB)",
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"create unique index if not exists displaypreferencesindex on displaypreferences (id)",
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"create table if not exists schema_version (table_name primary key, version)",
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//pragmas
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"pragma temp_store = memory"
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};
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RunQueries(queries);
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}
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/// <summary>
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/// Save the display preferences associated with an item in the repo
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/// </summary>
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/// <param name="displayPreferences">The display preferences.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">item</exception>
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public async Task SaveDisplayPreferences(DisplayPreferences displayPreferences, CancellationToken cancellationToken)
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{
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if (displayPreferences == null)
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{
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throw new ArgumentNullException("displayPreferences");
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}
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if (displayPreferences.Id == Guid.Empty)
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{
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throw new ArgumentNullException("displayPreferences.Id");
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}
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if (cancellationToken == null)
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{
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throw new ArgumentNullException("cancellationToken");
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}
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cancellationToken.ThrowIfCancellationRequested();
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var serialized = _jsonSerializer.SerializeToBytes(displayPreferences);
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await _writeLock.WaitAsync(cancellationToken).ConfigureAwait(false);
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SQLiteTransaction transaction = null;
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try
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{
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transaction = Connection.BeginTransaction();
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using (var cmd = Connection.CreateCommand())
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{
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cmd.CommandText = "replace into displaypreferences (id, data) values (@1, @2)";
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cmd.AddParam("@1", displayPreferences.Id);
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cmd.AddParam("@2", serialized);
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cmd.Transaction = transaction;
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await cmd.ExecuteNonQueryAsync(cancellationToken);
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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 display preferences:", 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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_writeLock.Release();
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}
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}
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/// <summary>
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/// Gets the display preferences.
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/// </summary>
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/// <param name="displayPreferencesId">The display preferences id.</param>
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/// <returns>Task{DisplayPreferences}.</returns>
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/// <exception cref="System.ArgumentNullException">item</exception>
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public async Task<DisplayPreferences> GetDisplayPreferences(Guid displayPreferencesId)
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{
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if (displayPreferencesId == Guid.Empty)
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{
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throw new ArgumentNullException("displayPreferencesId");
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}
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var cmd = Connection.CreateCommand();
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cmd.CommandText = "select data from displaypreferences where id = @id";
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var idParam = cmd.Parameters.Add("@id", DbType.Guid);
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idParam.Value = displayPreferencesId;
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using (var reader = await cmd.ExecuteReaderAsync(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow).ConfigureAwait(false))
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{
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if (reader.Read())
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{
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using (var stream = GetStream(reader, 0))
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{
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return _jsonSerializer.DeserializeFromStream<DisplayPreferences>(stream);
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}
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}
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}
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return null;
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}
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}
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}
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