501 lines
18 KiB
C#
501 lines
18 KiB
C#
#pragma warning disable CS1591
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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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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using Jellyfin.Data.Entities;
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using MediaBrowser.Controller.Channels;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Plugins;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Controller.Session;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Events;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.EntryPoints
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{
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public class LibraryChangedNotifier : IServerEntryPoint
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{
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/// <summary>
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/// The library manager.
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/// </summary>
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private readonly ILibraryManager _libraryManager;
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private readonly ISessionManager _sessionManager;
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private readonly IUserManager _userManager;
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private readonly ILogger _logger;
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/// <summary>
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/// The library changed sync lock.
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/// </summary>
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private readonly object _libraryChangedSyncLock = new object();
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private readonly List<Folder> _foldersAddedTo = new List<Folder>();
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private readonly List<Folder> _foldersRemovedFrom = new List<Folder>();
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private readonly List<BaseItem> _itemsAdded = new List<BaseItem>();
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private readonly List<BaseItem> _itemsRemoved = new List<BaseItem>();
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private readonly List<BaseItem> _itemsUpdated = new List<BaseItem>();
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/// <summary>
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/// Gets or sets the library update timer.
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/// </summary>
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/// <value>The library update timer.</value>
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private Timer LibraryUpdateTimer { get; set; }
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/// <summary>
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/// The library update duration.
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/// </summary>
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private const int LibraryUpdateDuration = 30000;
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private readonly IProviderManager _providerManager;
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public LibraryChangedNotifier(
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ILibraryManager libraryManager,
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ISessionManager sessionManager,
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IUserManager userManager,
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ILogger<LibraryChangedNotifier> logger,
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IProviderManager providerManager)
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{
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_libraryManager = libraryManager;
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_sessionManager = sessionManager;
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_userManager = userManager;
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_logger = logger;
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_providerManager = providerManager;
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}
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public Task RunAsync()
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{
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_libraryManager.ItemAdded += libraryManager_ItemAdded;
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_libraryManager.ItemUpdated += libraryManager_ItemUpdated;
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_libraryManager.ItemRemoved += libraryManager_ItemRemoved;
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_providerManager.RefreshCompleted += _providerManager_RefreshCompleted;
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_providerManager.RefreshStarted += _providerManager_RefreshStarted;
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_providerManager.RefreshProgress += _providerManager_RefreshProgress;
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return Task.CompletedTask;
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}
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private Dictionary<Guid, DateTime> _lastProgressMessageTimes = new Dictionary<Guid, DateTime>();
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private void _providerManager_RefreshProgress(object sender, GenericEventArgs<Tuple<BaseItem, double>> e)
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{
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var item = e.Argument.Item1;
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if (!EnableRefreshMessage(item))
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{
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return;
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}
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var progress = e.Argument.Item2;
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if (_lastProgressMessageTimes.TryGetValue(item.Id, out var lastMessageSendTime))
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{
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if (progress > 0 && progress < 100 && (DateTime.UtcNow - lastMessageSendTime).TotalMilliseconds < 1000)
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{
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return;
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}
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}
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_lastProgressMessageTimes[item.Id] = DateTime.UtcNow;
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var dict = new Dictionary<string, string>();
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dict["ItemId"] = item.Id.ToString("N", CultureInfo.InvariantCulture);
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dict["Progress"] = progress.ToString(CultureInfo.InvariantCulture);
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try
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{
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_sessionManager.SendMessageToAdminSessions("RefreshProgress", dict, CancellationToken.None);
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}
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catch
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{
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}
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var collectionFolders = _libraryManager.GetCollectionFolders(item).ToList();
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foreach (var collectionFolder in collectionFolders)
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{
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var collectionFolderDict = new Dictionary<string, string>();
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collectionFolderDict["ItemId"] = collectionFolder.Id.ToString("N", CultureInfo.InvariantCulture);
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collectionFolderDict["Progress"] = (collectionFolder.GetRefreshProgress() ?? 0).ToString(CultureInfo.InvariantCulture);
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try
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{
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_sessionManager.SendMessageToAdminSessions("RefreshProgress", collectionFolderDict, CancellationToken.None);
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}
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catch
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{
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}
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}
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}
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private void _providerManager_RefreshStarted(object sender, GenericEventArgs<BaseItem> e)
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{
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_providerManager_RefreshProgress(sender, new GenericEventArgs<Tuple<BaseItem, double>>(new Tuple<BaseItem, double>(e.Argument, 0)));
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}
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private void _providerManager_RefreshCompleted(object sender, GenericEventArgs<BaseItem> e)
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{
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_providerManager_RefreshProgress(sender, new GenericEventArgs<Tuple<BaseItem, double>>(new Tuple<BaseItem, double>(e.Argument, 100)));
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}
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private static bool EnableRefreshMessage(BaseItem item)
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{
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var folder = item as Folder;
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if (folder == null)
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{
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return false;
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}
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if (folder.IsRoot)
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{
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return false;
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}
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if (folder is AggregateFolder || folder is UserRootFolder)
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{
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return false;
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}
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if (folder is UserView || folder is Channel)
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{
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return false;
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}
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if (!folder.IsTopParent)
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{
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return false;
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}
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return true;
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}
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/// <summary>
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/// Handles the ItemAdded event of the libraryManager control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="ItemChangeEventArgs"/> instance containing the event data.</param>
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void libraryManager_ItemAdded(object sender, ItemChangeEventArgs e)
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{
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if (!FilterItem(e.Item))
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{
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return;
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}
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lock (_libraryChangedSyncLock)
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{
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if (LibraryUpdateTimer == null)
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{
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LibraryUpdateTimer = new Timer(
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LibraryUpdateTimerCallback,
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null,
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LibraryUpdateDuration,
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Timeout.Infinite);
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}
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else
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{
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LibraryUpdateTimer.Change(LibraryUpdateDuration, Timeout.Infinite);
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}
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var parent = e.Item.GetParent() as Folder;
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if (parent != null)
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{
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_foldersAddedTo.Add(parent);
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}
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_itemsAdded.Add(e.Item);
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}
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}
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/// <summary>
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/// Handles the ItemUpdated event of the libraryManager control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="ItemChangeEventArgs"/> instance containing the event data.</param>
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void libraryManager_ItemUpdated(object sender, ItemChangeEventArgs e)
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{
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if (!FilterItem(e.Item))
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{
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return;
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}
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lock (_libraryChangedSyncLock)
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{
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if (LibraryUpdateTimer == null)
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{
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LibraryUpdateTimer = new Timer(LibraryUpdateTimerCallback, null, LibraryUpdateDuration,
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Timeout.Infinite);
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}
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else
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{
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LibraryUpdateTimer.Change(LibraryUpdateDuration, Timeout.Infinite);
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}
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_itemsUpdated.Add(e.Item);
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}
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}
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/// <summary>
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/// Handles the ItemRemoved event of the libraryManager control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="ItemChangeEventArgs"/> instance containing the event data.</param>
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void libraryManager_ItemRemoved(object sender, ItemChangeEventArgs e)
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{
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if (!FilterItem(e.Item))
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{
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return;
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}
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lock (_libraryChangedSyncLock)
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{
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if (LibraryUpdateTimer == null)
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{
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LibraryUpdateTimer = new Timer(LibraryUpdateTimerCallback, null, LibraryUpdateDuration,
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Timeout.Infinite);
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}
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else
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{
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LibraryUpdateTimer.Change(LibraryUpdateDuration, Timeout.Infinite);
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}
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var parent = e.Parent as Folder;
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if (parent != null)
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{
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_foldersRemovedFrom.Add(parent);
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}
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_itemsRemoved.Add(e.Item);
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}
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}
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/// <summary>
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/// Libraries the update timer callback.
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/// </summary>
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/// <param name="state">The state.</param>
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private void LibraryUpdateTimerCallback(object state)
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{
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lock (_libraryChangedSyncLock)
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{
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// Remove dupes in case some were saved multiple times
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var foldersAddedTo = _foldersAddedTo
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.GroupBy(x => x.Id)
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.Select(x => x.First())
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.ToList();
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var foldersRemovedFrom = _foldersRemovedFrom
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.GroupBy(x => x.Id)
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.Select(x => x.First())
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.ToList();
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var itemsUpdated = _itemsUpdated
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.Where(i => !_itemsAdded.Contains(i))
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.GroupBy(x => x.Id)
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.Select(x => x.First())
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.ToList();
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SendChangeNotifications(_itemsAdded.ToList(), itemsUpdated, _itemsRemoved.ToList(), foldersAddedTo, foldersRemovedFrom, CancellationToken.None);
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if (LibraryUpdateTimer != null)
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{
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LibraryUpdateTimer.Dispose();
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LibraryUpdateTimer = null;
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}
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_itemsAdded.Clear();
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_itemsRemoved.Clear();
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_itemsUpdated.Clear();
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_foldersAddedTo.Clear();
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_foldersRemovedFrom.Clear();
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}
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}
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/// <summary>
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/// Sends the change notifications.
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/// </summary>
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/// <param name="itemsAdded">The items added.</param>
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/// <param name="itemsUpdated">The items updated.</param>
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/// <param name="itemsRemoved">The items removed.</param>
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/// <param name="foldersAddedTo">The folders added to.</param>
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/// <param name="foldersRemovedFrom">The folders removed from.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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private async void SendChangeNotifications(List<BaseItem> itemsAdded, List<BaseItem> itemsUpdated, List<BaseItem> itemsRemoved, List<Folder> foldersAddedTo, List<Folder> foldersRemovedFrom, CancellationToken cancellationToken)
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{
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var userIds = _sessionManager.Sessions
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.Select(i => i.UserId)
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.Where(i => !i.Equals(Guid.Empty))
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.Distinct()
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.ToArray();
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foreach (var userId in userIds)
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{
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LibraryUpdateInfo info;
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try
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{
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info = GetLibraryUpdateInfo(itemsAdded, itemsUpdated, itemsRemoved, foldersAddedTo, foldersRemovedFrom, userId);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error in GetLibraryUpdateInfo");
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return;
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}
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if (info.IsEmpty)
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{
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continue;
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}
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try
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{
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await _sessionManager.SendMessageToUserSessions(new List<Guid> { userId }, "LibraryChanged", info, cancellationToken).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error sending LibraryChanged message");
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}
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}
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}
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/// <summary>
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/// Gets the library update info.
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/// </summary>
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/// <param name="itemsAdded">The items added.</param>
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/// <param name="itemsUpdated">The items updated.</param>
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/// <param name="itemsRemoved">The items removed.</param>
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/// <param name="foldersAddedTo">The folders added to.</param>
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/// <param name="foldersRemovedFrom">The folders removed from.</param>
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/// <param name="userId">The user id.</param>
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/// <returns>LibraryUpdateInfo.</returns>
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private LibraryUpdateInfo GetLibraryUpdateInfo(List<BaseItem> itemsAdded, List<BaseItem> itemsUpdated, List<BaseItem> itemsRemoved, List<Folder> foldersAddedTo, List<Folder> foldersRemovedFrom, Guid userId)
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{
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var user = _userManager.GetUserById(userId);
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var newAndRemoved = new List<BaseItem>();
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newAndRemoved.AddRange(foldersAddedTo);
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newAndRemoved.AddRange(foldersRemovedFrom);
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var allUserRootChildren = _libraryManager.GetUserRootFolder().GetChildren(user, true).OfType<Folder>().ToList();
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return new LibraryUpdateInfo
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{
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ItemsAdded = itemsAdded.SelectMany(i => TranslatePhysicalItemToUserLibrary(i, user)).Select(i => i.Id.ToString("N", CultureInfo.InvariantCulture)).Distinct().ToArray(),
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ItemsUpdated = itemsUpdated.SelectMany(i => TranslatePhysicalItemToUserLibrary(i, user)).Select(i => i.Id.ToString("N", CultureInfo.InvariantCulture)).Distinct().ToArray(),
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ItemsRemoved = itemsRemoved.SelectMany(i => TranslatePhysicalItemToUserLibrary(i, user, true)).Select(i => i.Id.ToString("N", CultureInfo.InvariantCulture)).Distinct().ToArray(),
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FoldersAddedTo = foldersAddedTo.SelectMany(i => TranslatePhysicalItemToUserLibrary(i, user)).Select(i => i.Id.ToString("N", CultureInfo.InvariantCulture)).Distinct().ToArray(),
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FoldersRemovedFrom = foldersRemovedFrom.SelectMany(i => TranslatePhysicalItemToUserLibrary(i, user)).Select(i => i.Id.ToString("N", CultureInfo.InvariantCulture)).Distinct().ToArray(),
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CollectionFolders = GetTopParentIds(newAndRemoved, allUserRootChildren).ToArray()
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};
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}
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private static bool FilterItem(BaseItem item)
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{
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if (!item.IsFolder && !item.HasPathProtocol)
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{
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return false;
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}
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if (item is IItemByName && !(item is MusicArtist))
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{
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return false;
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}
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return item.SourceType == SourceType.Library;
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}
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private IEnumerable<string> GetTopParentIds(List<BaseItem> items, List<Folder> allUserRootChildren)
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{
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var list = new List<string>();
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foreach (var item in items)
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{
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// If the physical root changed, return the user root
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if (item is AggregateFolder)
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{
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continue;
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}
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var collectionFolders = _libraryManager.GetCollectionFolders(item, allUserRootChildren);
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foreach (var folder in allUserRootChildren)
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{
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list.Add(folder.Id.ToString("N", CultureInfo.InvariantCulture));
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}
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}
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return list.Distinct(StringComparer.Ordinal);
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}
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/// <summary>
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/// Translates the physical item to user library.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="item">The item.</param>
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/// <param name="user">The user.</param>
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/// <param name="includeIfNotFound">if set to <c>true</c> [include if not found].</param>
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/// <returns>IEnumerable{``0}.</returns>
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private IEnumerable<T> TranslatePhysicalItemToUserLibrary<T>(T item, User user, bool includeIfNotFound = false)
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where T : BaseItem
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{
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// If the physical root changed, return the user root
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if (item is AggregateFolder)
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{
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return new[] { _libraryManager.GetUserRootFolder() as T };
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}
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// Return it only if it's in the user's library
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if (includeIfNotFound || item.IsVisibleStandalone(user))
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{
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return new[] { item };
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}
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return Array.Empty<T>();
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}
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/// <summary>
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/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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}
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/// <summary>
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/// Releases unmanaged and - optionally - managed resources.
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/// </summary>
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/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
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protected virtual void Dispose(bool dispose)
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{
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if (dispose)
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{
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if (LibraryUpdateTimer != null)
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{
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LibraryUpdateTimer.Dispose();
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LibraryUpdateTimer = null;
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}
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_libraryManager.ItemAdded -= libraryManager_ItemAdded;
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_libraryManager.ItemUpdated -= libraryManager_ItemUpdated;
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_libraryManager.ItemRemoved -= libraryManager_ItemRemoved;
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_providerManager.RefreshCompleted -= _providerManager_RefreshCompleted;
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_providerManager.RefreshStarted -= _providerManager_RefreshStarted;
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_providerManager.RefreshProgress -= _providerManager_RefreshProgress;
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}
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}
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}
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}
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