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using MediaBrowser.Common.Progress;
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using MediaBrowser.Common.ScheduledTasks;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.LiveTv;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Logging;
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using System;
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using System.Collections.Generic;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Persistence
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{
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class CleanDatabaseScheduledTask : IScheduledTask
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{
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private readonly ILibraryManager _libraryManager;
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private readonly IItemRepository _itemRepo;
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private readonly ILogger _logger;
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private readonly IServerConfigurationManager _config;
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public CleanDatabaseScheduledTask(ILibraryManager libraryManager, IItemRepository itemRepo, ILogger logger, IServerConfigurationManager config)
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{
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_libraryManager = libraryManager;
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_itemRepo = itemRepo;
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_logger = logger;
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_config = config;
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}
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public string Name
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{
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get { return "Clean Database"; }
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}
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public string Description
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{
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get { return "Deletes obsolete content from the database."; }
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}
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public string Category
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{
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get { return "Library"; }
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}
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public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
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{
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var innerProgress = new ActionableProgress<double>();
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innerProgress.RegisterAction(p => progress.Report(.95 * p));
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await UpdateToLatestSchema(cancellationToken, innerProgress).ConfigureAwait(false);
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innerProgress = new ActionableProgress<double>();
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innerProgress.RegisterAction(p => progress.Report(95 + (.05 * p)));
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await CleanDeadItems(cancellationToken, innerProgress).ConfigureAwait(false);
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progress.Report(100);
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}
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private async Task UpdateToLatestSchema(CancellationToken cancellationToken, IProgress<double> progress)
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{
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var itemIds = _libraryManager.GetItemIds(new InternalItemsQuery
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{
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IsCurrentSchema = false,
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// These are constantly getting regenerated so don't bother with them here
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ExcludeItemTypes = new[] { typeof(LiveTvProgram).Name }
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});
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var numComplete = 0;
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var numItems = itemIds.Count;
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_logger.Debug("Upgrading schema for {0} items", numItems);
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foreach (var itemId in itemIds)
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{
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cancellationToken.ThrowIfCancellationRequested();
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if (itemId == Guid.Empty)
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{
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// Somehow some invalid data got into the db. It probably predates the boundary checking
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continue;
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}
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var item = _libraryManager.GetItemById(itemId);
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if (item != null)
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{
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try
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{
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await _itemRepo.SaveItem(item, cancellationToken).ConfigureAwait(false);
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}
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catch (OperationCanceledException)
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{
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throw;
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error saving item", ex);
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}
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}
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numComplete++;
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double percent = numComplete;
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percent /= numItems;
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progress.Report(percent * 100);
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}
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if (!_config.Configuration.DisableStartupScan)
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{
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_config.Configuration.DisableStartupScan = true;
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_config.SaveConfiguration();
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}
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progress.Report(100);
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}
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private async Task CleanDeadItems(CancellationToken cancellationToken, IProgress<double> progress)
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{
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var itemIds = _libraryManager.GetItemIds(new InternalItemsQuery
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{
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HasDeadParentId = true
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});
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var numComplete = 0;
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var numItems = itemIds.Count;
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_logger.Debug("Cleaning {0} items with dead parent links", numItems);
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foreach (var itemId in itemIds)
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{
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cancellationToken.ThrowIfCancellationRequested();
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var item = _libraryManager.GetItemById(itemId);
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if (item != null)
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{
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_logger.Debug("Cleaning item {0} type: {1} path: {2}", item.Name, item.GetType().Name, item.Path ?? string.Empty);
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await _libraryManager.DeleteItem(item, new DeleteOptions
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{
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DeleteFileLocation = false
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});
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}
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numComplete++;
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double percent = numComplete;
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percent /= numItems;
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progress.Report(percent * 100);
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}
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progress.Report(100);
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}
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public IEnumerable<ITaskTrigger> GetDefaultTriggers()
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{
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return new ITaskTrigger[]
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{
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new IntervalTrigger{ Interval = TimeSpan.FromDays(1)}
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};
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}
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}
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}
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