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using MediaBrowser.Common.Progress;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Model.IO;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Model.Tasks;
namespace Emby.Server.Implementations.Data
{
public class CleanDatabaseScheduledTask : IScheduledTask
{
private readonly ILibraryManager _libraryManager;
private readonly IItemRepository _itemRepo;
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
private readonly IApplicationPaths _appPaths;
public CleanDatabaseScheduledTask(ILibraryManager libraryManager, IItemRepository itemRepo, ILogger logger, IFileSystem fileSystem, IApplicationPaths appPaths)
{
_libraryManager = libraryManager;
_itemRepo = itemRepo;
_logger = logger;
_fileSystem = fileSystem;
_appPaths = appPaths;
}
public string Name
{
get { return "Clean Database"; }
}
public string Description
{
get { return "Deletes obsolete content from the database."; }
}
public string Category
{
get { return "Library"; }
}
public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
{
// Ensure these objects are lazy loaded.
// Without this there is a deadlock that will need to be investigated
var rootChildren = _libraryManager.RootFolder.Children.ToList();
rootChildren = _libraryManager.GetUserRootFolder().Children.ToList();
var innerProgress = new ActionableProgress<double>();
innerProgress.RegisterAction(p =>
{
double newPercentCommplete = .45 * p;
progress.Report(newPercentCommplete);
});
await CleanDeadItems(cancellationToken, innerProgress).ConfigureAwait(false);
progress.Report(45);
innerProgress = new ActionableProgress<double>();
innerProgress.RegisterAction(p =>
{
double newPercentCommplete = 45 + .55 * p;
progress.Report(newPercentCommplete);
});
await _itemRepo.UpdateInheritedValues(cancellationToken).ConfigureAwait(false);
progress.Report(100);
}
private async Task CleanDeadItems(CancellationToken cancellationToken, IProgress<double> progress)
{
var itemIds = _libraryManager.GetItemIds(new InternalItemsQuery
{
HasDeadParentId = true
});
var numComplete = 0;
var numItems = itemIds.Count;
_logger.Debug("Cleaning {0} items with dead parent links", numItems);
foreach (var itemId in itemIds)
{
cancellationToken.ThrowIfCancellationRequested();
var item = _libraryManager.GetItemById(itemId);
if (item != null)
{
_logger.Info("Cleaning item {0} type: {1} path: {2}", item.Name, item.GetType().Name, item.Path ?? string.Empty);
await item.Delete(new DeleteOptions
{
DeleteFileLocation = false
}).ConfigureAwait(false);
}
numComplete++;
double percent = numComplete;
percent /= numItems;
progress.Report(percent * 100);
}
progress.Report(100);
}
/// <summary>
/// Creates the triggers that define when the task will run
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
{
return new[] {
// Every so often
new TaskTriggerInfo { Type = TaskTriggerInfo.TriggerInterval, IntervalTicks = TimeSpan.FromHours(24).Ticks}
};
}
public string Key
{
get { return "CleanDatabase"; }
}
}
}
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