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Code Issues Actions 2 Packages Projects Releases Wiki Activity

moved displaypreferences to usermanager to solve concurrency issues

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This commit is contained in:
Luke Pulverenti
2013-04-02 13:37:49 -04:00
parent dcc057f324
commit b4dd8a2106
17 changed files with 193 additions and 229 deletions
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2
MediaBrowser.Server.Implementations/HttpServer/HttpServer.cs
View File

@@ -160,7 +160,7 @@ namespace MediaBrowser.Server.Implementations.HttpServer
if (exception != null)
{
_logger.ErrorException("Error processing request", exception);
_logger.ErrorException("Error processing request for {0}", exception, req.RawUrl);
if (!string.IsNullOrEmpty(exception.Message))
{

29
MediaBrowser.Server.Implementations/Library/LibraryManager.cs
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@@ -124,15 +124,6 @@ namespace MediaBrowser.Server.Implementations.Library
LazyInitializer.EnsureInitialized(ref _libraryItemsCache, ref _libraryItemsCacheInitialized, ref _libraryItemsCacheSyncLock, CreateLibraryItemsCache);
return _libraryItemsCache;
}
set
{
_libraryItemsCache = value;
if (value == null)
{
_libraryItemsCacheInitialized = false;
}
}
}
/// <summary>
@@ -756,26 +747,6 @@ namespace MediaBrowser.Server.Implementations.Library
await RootFolder.ValidateChildren(progress, cancellationToken, recursive: true).ConfigureAwait(false);
}
/// <summary>
/// Saves display preferences for a Folder
/// </summary>
/// <param name="user">The user.</param>
/// <param name="folder">The folder.</param>
/// <param name="data">The data.</param>
/// <returns>Task.</returns>
public Task SaveDisplayPreferencesForFolder(User user, Folder folder, DisplayPreferences data)
{
// Need to update all items with the same DisplayPreferencesId
foreach (var child in RootFolder.GetRecursiveChildren(user)
.OfType<Folder>()
.Where(i => i.DisplayPreferencesId == folder.DisplayPreferencesId))
{
child.AddOrUpdateDisplayPreferences(user, data);
}
return Kernel.DisplayPreferencesRepository.SaveDisplayPreferences(folder, CancellationToken.None);
}
/// <summary>
/// Gets the default view.
/// </summary>

66
MediaBrowser.Server.Implementations/Library/UserManager.cs
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@@ -1,10 +1,12 @@
using MediaBrowser.Common.Events;
using System.Collections.Concurrent;
using MediaBrowser.Common.Events;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Connectivity;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
@@ -97,6 +99,11 @@ namespace MediaBrowser.Server.Implementations.Library
/// <value>The configuration manager.</value>
private IServerConfigurationManager ConfigurationManager { get; set; }
/// <summary>
/// The _user data
/// </summary>
private readonly ConcurrentDictionary<string, Task<DisplayPreferences>> _displayPreferences = new ConcurrentDictionary<string, Task<DisplayPreferences>>();
/// <summary>
/// Initializes a new instance of the <see cref="UserManager" /> class.
/// </summary>
@@ -156,6 +163,62 @@ namespace MediaBrowser.Server.Implementations.Library
}
#endregion
/// <summary>
/// Gets the display preferences.
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <returns>DisplayPreferences.</returns>
public Task<DisplayPreferences> GetDisplayPreferences(Guid userId, Guid displayPreferencesId)
{
var key = userId + displayPreferencesId.ToString();
return _displayPreferences.GetOrAdd(key, keyName => RetrieveDisplayPreferences(userId, displayPreferencesId));
}
/// <summary>
/// Retrieves the display preferences.
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <returns>DisplayPreferences.</returns>
private async Task<DisplayPreferences> RetrieveDisplayPreferences(Guid userId, Guid displayPreferencesId)
{
var displayPreferences = await Kernel.Instance.DisplayPreferencesRepository.GetDisplayPreferences(userId, displayPreferencesId).ConfigureAwait(false);
return displayPreferences ?? new DisplayPreferences();
}
/// <summary>
/// Saves display preferences for an item
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <param name="displayPreferences">The display preferences.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public async Task SaveDisplayPreferences(Guid userId, Guid displayPreferencesId, DisplayPreferences displayPreferences, CancellationToken cancellationToken)
{
var key = userId + displayPreferencesId.ToString();
var newValue = Task.FromResult(displayPreferences);
try
{
await Kernel.Instance.DisplayPreferencesRepository.SaveDisplayPreferences(userId, displayPreferencesId,
displayPreferences,
cancellationToken).ConfigureAwait(false);
// Once it succeeds, put it into the dictionary to make it available to everyone else
_displayPreferences.AddOrUpdate(key, newValue, delegate { return newValue; });
}
catch (Exception ex)
{
_logger.ErrorException("Error saving display preferences", ex);
throw;
}
}
/// <summary>
/// Gets a User by Id
/// </summary>
@@ -711,6 +774,5 @@ namespace MediaBrowser.Server.Implementations.Library
return Kernel.UserDataRepository.SaveUserData(item, CancellationToken.None);
}
}
}

95
MediaBrowser.Server.Implementations/Sqlite/SQLiteDisplayPreferencesRepository.cs
View File

@@ -1,11 +1,9 @@
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Entities;
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;
@@ -80,8 +78,8 @@ namespace MediaBrowser.Server.Implementations.Sqlite
string[] queries = {
"create table if not exists display_prefs (item_id GUID, user_id GUID, data BLOB)",
"create unique index if not exists idx_display_prefs on display_prefs (item_id, user_id)",
"create table if not exists displaypreferences (id GUID, userId GUID, data BLOB)",
"create unique index if not exists displaypreferencesindex on displaypreferences (id, userId)",
"create table if not exists schema_version (table_name primary key, version)",
//pragmas
"pragma temp_store = memory"
@@ -93,82 +91,87 @@ namespace MediaBrowser.Server.Implementations.Sqlite
/// <summary>
/// Save the display preferences associated with an item in the repo
/// </summary>
/// <param name="item">The item.</param>
/// <param name="userId">The user id.</param>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <param name="displayPreferences">The display preferences.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public Task SaveDisplayPreferences(Folder item, CancellationToken cancellationToken)
public Task SaveDisplayPreferences(Guid userId, Guid displayPreferencesId, DisplayPreferences displayPreferences, CancellationToken cancellationToken)
{
if (item == null)
if (displayPreferences == null)
{
throw new ArgumentNullException("item");
throw new ArgumentNullException("displayPreferences");
}
if (cancellationToken == null)
{
throw new ArgumentNullException("cancellationToken");
}
if (userId == Guid.Empty)
{
throw new ArgumentNullException("userId");
}
if (displayPreferencesId == Guid.Empty)
{
throw new ArgumentNullException("displayPreferencesId");
}
cancellationToken.ThrowIfCancellationRequested();
return Task.Run(() =>
{
var serialized = _protobufSerializer.SerializeToBytes(displayPreferences);
cancellationToken.ThrowIfCancellationRequested();
var cmd = connection.CreateCommand();
cmd.CommandText = "delete from display_prefs where item_id = @guid";
cmd.AddParam("@guid", item.DisplayPreferencesId);
cmd.CommandText = "replace into displaypreferences (id, userId, data) values (@1, @2, @3)";
cmd.AddParam("@1", displayPreferencesId);
cmd.AddParam("@2", userId);
cmd.AddParam("@3", serialized);
QueueCommand(cmd);
if (item.DisplayPreferences != null)
{
foreach (var data in item.DisplayPreferences)
{
cmd = connection.CreateCommand();
cmd.CommandText = "insert into display_prefs (item_id, user_id, data) values (@1, @2, @3)";
cmd.AddParam("@1", item.DisplayPreferencesId);
cmd.AddParam("@2", data.UserId);
cmd.AddParam("@3", _protobufSerializer.SerializeToBytes(data));
QueueCommand(cmd);
}
}
});
}
/// <summary>
/// Gets display preferences for an item
/// Gets the display preferences.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>IEnumerable{DisplayPreferences}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public IEnumerable<DisplayPreferences> RetrieveDisplayPreferences(Folder item)
/// <param name="userId">The user id.</param>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <returns>Task{DisplayPreferences}.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public async Task<DisplayPreferences> GetDisplayPreferences(Guid userId, Guid displayPreferencesId)
{
if (item == null)
if (userId == Guid.Empty)
{
throw new ArgumentNullException("item");
throw new ArgumentNullException("userId");
}
if (displayPreferencesId == Guid.Empty)
{
throw new ArgumentNullException("displayPreferencesId");
}
var cmd = connection.CreateCommand();
cmd.CommandText = "select data from display_prefs where item_id = @guid";
var guidParam = cmd.Parameters.Add("@guid", DbType.Guid);
guidParam.Value = item.DisplayPreferencesId;
cmd.CommandText = "select data from displaypreferences where id = @id and userId=@userId";
var idParam = cmd.Parameters.Add("@id", DbType.Guid);
idParam.Value = displayPreferencesId;
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
var userIdParam = cmd.Parameters.Add("@userId", DbType.Guid);
userIdParam.Value = userId;
using (var reader = await cmd.ExecuteReaderAsync(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow).ConfigureAwait(false))
{
while (reader.Read())
if (reader.Read())
{
using (var stream = GetStream(reader, 0))
{
var data = _protobufSerializer.DeserializeFromStream<DisplayPreferences>(stream);
if (data != null)
{
yield return data;
}
return _protobufSerializer.DeserializeFromStream<DisplayPreferences>(stream);
}
}
}
return null;
}
}
}