mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-09-08 20:38:24 +02:00
244 lines
7.5 KiB
C#
244 lines
7.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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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 MediaBrowser.Model.IO;
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using MediaBrowser.Common.Events;
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using MediaBrowser.Common.Progress;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.IO;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Model.Extensions;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.System;
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using MediaBrowser.Model.Tasks;
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using MediaBrowser.Model.Threading;
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namespace Emby.Server.Implementations.IO
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{
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public class FileRefresher : IDisposable
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{
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private ILogger Logger { get; set; }
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private ITaskManager TaskManager { get; set; }
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private ILibraryManager LibraryManager { get; set; }
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private IServerConfigurationManager ConfigurationManager { get; set; }
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private readonly IFileSystem _fileSystem;
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private readonly List<string> _affectedPaths = new List<string>();
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private ITimer _timer;
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private readonly ITimerFactory _timerFactory;
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private readonly object _timerLock = new object();
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public string Path { get; private set; }
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public event EventHandler<EventArgs> Completed;
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private readonly IEnvironmentInfo _environmentInfo;
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private readonly ILibraryManager _libraryManager;
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public FileRefresher(string path, IFileSystem fileSystem, IServerConfigurationManager configurationManager, ILibraryManager libraryManager, ITaskManager taskManager, ILogger logger, ITimerFactory timerFactory, IEnvironmentInfo environmentInfo, ILibraryManager libraryManager1)
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{
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logger.Debug("New file refresher created for {0}", path);
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Path = path;
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_fileSystem = fileSystem;
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ConfigurationManager = configurationManager;
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LibraryManager = libraryManager;
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TaskManager = taskManager;
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Logger = logger;
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_timerFactory = timerFactory;
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_environmentInfo = environmentInfo;
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_libraryManager = libraryManager1;
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AddPath(path);
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}
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private void AddAffectedPath(string path)
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{
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if (string.IsNullOrWhiteSpace(path))
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{
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throw new ArgumentNullException("path");
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}
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if (!_affectedPaths.Contains(path, StringComparer.Ordinal))
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{
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_affectedPaths.Add(path);
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}
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}
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public void AddPath(string path)
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{
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if (string.IsNullOrWhiteSpace(path))
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{
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throw new ArgumentNullException("path");
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}
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lock (_timerLock)
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{
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AddAffectedPath(path);
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}
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RestartTimer();
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}
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public void RestartTimer()
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{
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if (_disposed)
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{
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return;
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}
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lock (_timerLock)
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{
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if (_disposed)
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{
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return;
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}
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if (_timer == null)
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{
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_timer = _timerFactory.Create(OnTimerCallback, null, TimeSpan.FromSeconds(ConfigurationManager.Configuration.LibraryMonitorDelay), TimeSpan.FromMilliseconds(-1));
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}
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else
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{
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_timer.Change(TimeSpan.FromSeconds(ConfigurationManager.Configuration.LibraryMonitorDelay), TimeSpan.FromMilliseconds(-1));
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}
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}
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}
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public void ResetPath(string path, string affectedFile)
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{
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lock (_timerLock)
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{
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Logger.Debug("Resetting file refresher from {0} to {1}", Path, path);
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Path = path;
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AddAffectedPath(path);
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if (!string.IsNullOrWhiteSpace(affectedFile))
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{
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AddAffectedPath(affectedFile);
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}
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}
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RestartTimer();
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}
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private void OnTimerCallback(object state)
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{
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List<string> paths;
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lock (_timerLock)
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{
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paths = _affectedPaths.ToList();
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}
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Logger.Debug("Timer stopped.");
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DisposeTimer();
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EventHelper.FireEventIfNotNull(Completed, this, EventArgs.Empty, Logger);
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try
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{
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ProcessPathChanges(paths.ToList());
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error processing directory changes", ex);
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}
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}
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private void ProcessPathChanges(List<string> paths)
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{
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var itemsToRefresh = paths
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.Distinct(StringComparer.OrdinalIgnoreCase)
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.Select(GetAffectedBaseItem)
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.Where(item => item != null)
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.DistinctBy(i => i.Id)
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.ToList();
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//foreach (var p in paths)
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//{
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// Logger.Info(p + " reports change.");
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//}
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// If the root folder changed, run the library task so the user can see it
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if (itemsToRefresh.Any(i => i is AggregateFolder))
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{
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LibraryManager.ValidateMediaLibrary(new SimpleProgress<double>(), CancellationToken.None);
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return;
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}
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foreach (var item in itemsToRefresh)
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{
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Logger.Info(item.Name + " (" + item.Path + ") will be refreshed.");
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try
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{
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item.ChangedExternally();
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}
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catch (IOException ex)
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{
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// For now swallow and log.
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// Research item: If an IOException occurs, the item may be in a disconnected state (media unavailable)
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// Should we remove it from it's parent?
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Logger.ErrorException("Error refreshing {0}", ex, item.Name);
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error refreshing {0}", ex, item.Name);
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}
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}
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}
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/// <summary>
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/// Gets the affected base item.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <returns>BaseItem.</returns>
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private BaseItem GetAffectedBaseItem(string path)
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{
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BaseItem item = null;
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while (item == null && !string.IsNullOrEmpty(path))
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{
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item = LibraryManager.FindByPath(path, null);
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path = _fileSystem.GetDirectoryName(path);
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}
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if (item != null)
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{
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// If the item has been deleted find the first valid parent that still exists
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while (!_fileSystem.DirectoryExists(item.Path) && !_fileSystem.FileExists(item.Path))
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{
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item = item.IsOwnedItem ? item.GetOwner() : item.GetParent();
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if (item == null)
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{
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break;
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}
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}
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}
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return item;
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}
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private void DisposeTimer()
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{
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lock (_timerLock)
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{
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if (_timer != null)
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{
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_timer.Dispose();
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_timer = null;
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}
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}
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}
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private bool _disposed;
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public void Dispose()
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{
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_disposed = true;
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DisposeTimer();
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GC.SuppressFinalize(this);
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}
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}
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}
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