mirror of
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162 lines
5.2 KiB
C#
162 lines
5.2 KiB
C#
using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Plugins;
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using MediaBrowser.Controller.Session;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Session;
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using MoreLinq;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.EntryPoints
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{
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class UserDataChangeNotifier : IServerEntryPoint
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{
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private readonly ISessionManager _sessionManager;
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private readonly ILogger _logger;
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private readonly IUserDataManager _userDataManager;
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private readonly IUserManager _userManager;
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private readonly object _syncLock = new object();
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private Timer UpdateTimer { get; set; }
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private const int UpdateDuration = 500;
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private readonly Dictionary<Guid, List<IHasUserData>> _changedItems = new Dictionary<Guid, List<IHasUserData>>();
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public UserDataChangeNotifier(IUserDataManager userDataManager, ISessionManager sessionManager, ILogger logger, IUserManager userManager)
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{
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_userDataManager = userDataManager;
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_sessionManager = sessionManager;
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_logger = logger;
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_userManager = userManager;
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}
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public void Run()
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{
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_userDataManager.UserDataSaved += _userDataManager_UserDataSaved;
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}
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void _userDataManager_UserDataSaved(object sender, UserDataSaveEventArgs e)
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{
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if (e.SaveReason == UserDataSaveReason.PlaybackProgress)
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{
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return;
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}
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lock (_syncLock)
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{
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if (UpdateTimer == null)
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{
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UpdateTimer = new Timer(UpdateTimerCallback, null, UpdateDuration,
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Timeout.Infinite);
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}
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else
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{
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UpdateTimer.Change(UpdateDuration, Timeout.Infinite);
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}
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List<IHasUserData> keys;
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if (!_changedItems.TryGetValue(e.UserId, out keys))
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{
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keys = new List<IHasUserData>();
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_changedItems[e.UserId] = keys;
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}
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keys.Add(e.Item);
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var baseItem = e.Item as BaseItem;
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// Go up one level for indicators
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if (baseItem != null)
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{
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var parent = baseItem.GetParent();
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if (parent != null)
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{
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keys.Add(parent);
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}
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}
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}
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}
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private void UpdateTimerCallback(object state)
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{
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lock (_syncLock)
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{
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// Remove dupes in case some were saved multiple times
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var changes = _changedItems.ToList();
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_changedItems.Clear();
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var task = SendNotifications(changes, CancellationToken.None);
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if (UpdateTimer != null)
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{
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UpdateTimer.Dispose();
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UpdateTimer = null;
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}
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}
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}
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private async Task SendNotifications(IEnumerable<KeyValuePair<Guid, List<IHasUserData>>> changes, CancellationToken cancellationToken)
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{
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foreach (var pair in changes)
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{
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var userId = pair.Key;
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var userSessions = _sessionManager.Sessions
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.Where(u => u.ContainsUser(userId) && u.SessionController != null && u.IsActive)
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.ToList();
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if (userSessions.Count > 0)
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{
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var user = _userManager.GetUserById(userId);
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var dtoList = pair.Value
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.DistinctBy(i => i.Id)
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.Select(i =>
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{
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var dto = _userDataManager.GetUserDataDto(i, user).Result;
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dto.ItemId = i.Id.ToString("N");
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return dto;
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})
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.ToList();
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var info = new UserDataChangeInfo
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{
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UserId = userId.ToString("N"),
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UserDataList = dtoList
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};
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foreach (var userSession in userSessions)
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{
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try
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{
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await userSession.SessionController.SendUserDataChangeInfo(info, cancellationToken).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error sending UserDataChanged message", ex);
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}
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}
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}
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}
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}
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public void Dispose()
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{
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if (UpdateTimer != null)
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{
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UpdateTimer.Dispose();
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UpdateTimer = null;
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}
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_userDataManager.UserDataSaved -= _userDataManager_UserDataSaved;
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}
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}
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}
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