123 lines
3.9 KiB
C#
123 lines
3.9 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.ScheduledTasks;
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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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namespace MediaBrowser.Common.Implementations.ScheduledTasks.Tasks
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{
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/// <summary>
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/// Deletes old cache files
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/// </summary>
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public class DeleteCacheFileTask : IScheduledTask
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{
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/// <summary>
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/// Gets or sets the application paths.
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/// </summary>
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/// <value>The application paths.</value>
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private IApplicationPaths ApplicationPaths { get; set; }
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/// <summary>
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/// Initializes a new instance of the <see cref="DeleteCacheFileTask" /> class.
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/// </summary>
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/// <param name="appPaths">The app paths.</param>
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public DeleteCacheFileTask(IApplicationPaths appPaths)
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{
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ApplicationPaths = appPaths;
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}
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/// <summary>
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/// Creates the triggers that define when the task will run
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/// </summary>
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/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
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public IEnumerable<ITaskTrigger> GetDefaultTriggers()
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{
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var trigger = new DailyTrigger { TimeOfDay = TimeSpan.FromHours(2) }; //2am
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return new[] { trigger };
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}
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/// <summary>
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/// Returns the task to be executed
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/// </summary>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="progress">The progress.</param>
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/// <returns>Task.</returns>
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public Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
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{
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return Task.Run(() =>
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{
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var minDateModified = DateTime.UtcNow.AddDays(-45);
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DeleteCacheFilesFromDirectory(cancellationToken, ApplicationPaths.CachePath, minDateModified, progress);
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});
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}
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/// <summary>
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/// Deletes the cache files from directory with a last write time less than a given date
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/// </summary>
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/// <param name="cancellationToken">The task cancellation token.</param>
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/// <param name="directory">The directory.</param>
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/// <param name="minDateModified">The min date modified.</param>
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/// <param name="progress">The progress.</param>
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private void DeleteCacheFilesFromDirectory(CancellationToken cancellationToken, string directory, DateTime minDateModified, IProgress<double> progress)
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{
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var filesToDelete = new DirectoryInfo(directory).EnumerateFileSystemInfos("*", SearchOption.AllDirectories)
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.Where(f => !f.Attributes.HasFlag(FileAttributes.Directory) && f.LastWriteTimeUtc < minDateModified)
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.ToList();
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var index = 0;
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foreach (var file in filesToDelete)
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{
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double percent = index;
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percent /= filesToDelete.Count;
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progress.Report(100 * percent);
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cancellationToken.ThrowIfCancellationRequested();
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File.Delete(file.FullName);
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index++;
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}
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progress.Report(100);
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}
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/// <summary>
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/// Gets the name of the task
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/// </summary>
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/// <value>The name.</value>
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public string Name
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{
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get { return "Cache file cleanup"; }
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}
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/// <summary>
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/// Gets the description.
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/// </summary>
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/// <value>The description.</value>
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public string Description
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{
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get { return "Deletes cache files no longer needed by the system"; }
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}
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/// <summary>
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/// Gets the category.
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/// </summary>
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/// <value>The category.</value>
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public string Category
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{
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get
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{
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return "Maintenance";
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}
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}
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}
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}
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