jellyfin-server/MediaBrowser.Server.Implementations/Persistence/SqliteDisplayPreferencesRepository.cs
2015-05-02 18:59:01 -04:00

313 lines
11 KiB
C#

using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Persistence
{
/// <summary>
/// Class SQLiteDisplayPreferencesRepository
/// </summary>
public class SqliteDisplayPreferencesRepository : BaseSqliteRepository, IDisplayPreferencesRepository
{
private IDbConnection _connection;
public SqliteDisplayPreferencesRepository(ILogManager logManager, IJsonSerializer jsonSerializer, IApplicationPaths appPaths) : base(logManager)
{
_jsonSerializer = jsonSerializer;
_appPaths = appPaths;
}
/// <summary>
/// Gets the name of the repository
/// </summary>
/// <value>The name.</value>
public string Name
{
get
{
return "SQLite";
}
}
/// <summary>
/// The _json serializer
/// </summary>
private readonly IJsonSerializer _jsonSerializer;
/// <summary>
/// The _app paths
/// </summary>
private readonly IApplicationPaths _appPaths;
/// <summary>
/// Opens the connection to the database
/// </summary>
/// <returns>Task.</returns>
public async Task Initialize()
{
var dbFile = Path.Combine(_appPaths.DataPath, "displaypreferences.db");
_connection = await SqliteExtensions.ConnectToDb(dbFile, Logger).ConfigureAwait(false);
string[] queries = {
"create table if not exists userdisplaypreferences (id GUID, userId GUID, client text, data BLOB)",
"create unique index if not exists userdisplaypreferencesindex on userdisplaypreferences (id, userId, client)",
//pragmas
"pragma temp_store = memory",
"pragma shrink_memory"
};
_connection.RunQueries(queries, Logger);
}
/// <summary>
/// Save the display preferences associated with an item in the repo
/// </summary>
/// <param name="displayPreferences">The display preferences.</param>
/// <param name="userId">The user id.</param>
/// <param name="client">The client.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public async Task SaveDisplayPreferences(DisplayPreferences displayPreferences, Guid userId, string client, CancellationToken cancellationToken)
{
if (displayPreferences == null)
{
throw new ArgumentNullException("displayPreferences");
}
if (string.IsNullOrWhiteSpace(displayPreferences.Id))
{
throw new ArgumentNullException("displayPreferences.Id");
}
cancellationToken.ThrowIfCancellationRequested();
var serialized = _jsonSerializer.SerializeToBytes(displayPreferences);
await WriteLock.WaitAsync(cancellationToken).ConfigureAwait(false);
IDbTransaction transaction = null;
try
{
transaction = _connection.BeginTransaction();
using (var cmd = _connection.CreateCommand())
{
cmd.CommandText = "replace into userdisplaypreferences (id, userid, client, data) values (@1, @2, @3, @4)";
cmd.Parameters.Add(cmd, "@1", DbType.Guid).Value = new Guid(displayPreferences.Id);
cmd.Parameters.Add(cmd, "@2", DbType.Guid).Value = userId;
cmd.Parameters.Add(cmd, "@3", DbType.String).Value = client;
cmd.Parameters.Add(cmd, "@4", DbType.Binary).Value = serialized;
cmd.Transaction = transaction;
cmd.ExecuteNonQuery();
}
transaction.Commit();
}
catch (OperationCanceledException)
{
if (transaction != null)
{
transaction.Rollback();
}
throw;
}
catch (Exception e)
{
Logger.ErrorException("Failed to save display preferences:", e);
if (transaction != null)
{
transaction.Rollback();
}
throw;
}
finally
{
if (transaction != null)
{
transaction.Dispose();
}
WriteLock.Release();
}
}
/// <summary>
/// Save all display preferences associated with a user in the repo
/// </summary>
/// <param name="displayPreferences">The display preferences.</param>
/// <param name="userId">The user id.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public async Task SaveAllDisplayPreferences(IEnumerable<DisplayPreferences> displayPreferences, Guid userId, CancellationToken cancellationToken)
{
if (displayPreferences == null)
{
throw new ArgumentNullException("displayPreferences");
}
cancellationToken.ThrowIfCancellationRequested();
await WriteLock.WaitAsync(cancellationToken).ConfigureAwait(false);
IDbTransaction transaction = null;
try
{
transaction = _connection.BeginTransaction();
foreach (var displayPreference in displayPreferences)
{
var serialized = _jsonSerializer.SerializeToBytes(displayPreference);
using (var cmd = _connection.CreateCommand())
{
cmd.CommandText = "replace into userdisplaypreferences (id, userid, client, data) values (@1, @2, @3, @4)";
cmd.Parameters.Add(cmd, "@1", DbType.Guid).Value = new Guid(displayPreference.Id);
cmd.Parameters.Add(cmd, "@2", DbType.Guid).Value = userId;
cmd.Parameters.Add(cmd, "@3", DbType.String).Value = displayPreference.Client;
cmd.Parameters.Add(cmd, "@4", DbType.Binary).Value = serialized;
cmd.Transaction = transaction;
cmd.ExecuteNonQuery();
}
}
transaction.Commit();
}
catch (OperationCanceledException)
{
if (transaction != null)
{
transaction.Rollback();
}
throw;
}
catch (Exception e)
{
Logger.ErrorException("Failed to save display preferences:", e);
if (transaction != null)
{
transaction.Rollback();
}
throw;
}
finally
{
if (transaction != null)
{
transaction.Dispose();
}
WriteLock.Release();
}
}
/// <summary>
/// Gets the display preferences.
/// </summary>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <param name="userId">The user id.</param>
/// <param name="client">The client.</param>
/// <returns>Task{DisplayPreferences}.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public DisplayPreferences GetDisplayPreferences(string displayPreferencesId, Guid userId, string client)
{
if (string.IsNullOrWhiteSpace(displayPreferencesId))
{
throw new ArgumentNullException("displayPreferencesId");
}
var guidId = displayPreferencesId.GetMD5();
var cmd = _connection.CreateCommand();
cmd.CommandText = "select data from userdisplaypreferences where id = @id and userId=@userId and client=@client";
cmd.Parameters.Add(cmd, "@id", DbType.Guid).Value = guidId;
cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
cmd.Parameters.Add(cmd, "@client", DbType.String).Value = client;
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
{
if (reader.Read())
{
using (var stream = reader.GetMemoryStream(0))
{
return _jsonSerializer.DeserializeFromStream<DisplayPreferences>(stream);
}
}
}
return new DisplayPreferences
{
Id = guidId.ToString("N")
};
}
/// <summary>
/// Gets all display preferences for the given user.
/// </summary>
/// <param name="userId">The user id.</param>
/// <returns>Task{DisplayPreferences}.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public IEnumerable<DisplayPreferences> GetAllDisplayPreferences(Guid userId)
{
var cmd = _connection.CreateCommand();
cmd.CommandText = "select data from userdisplaypreferences where userId=@userId";
cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
{
while (reader.Read())
{
using (var stream = reader.GetMemoryStream(0))
{
yield return _jsonSerializer.DeserializeFromStream<DisplayPreferences>(stream);
}
}
}
}
protected override void CloseConnection()
{
if (_connection != null)
{
if (_connection.IsOpen())
{
_connection.Close();
}
_connection.Dispose();
_connection = null;
}
}
}
}