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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.Model.Tasks;
namespace Emby.Server.Implementations.ScheduledTasks.Tasks
{
/// <summary>
/// Deletes old log files
/// </summary>
public class DeleteLogFileTask : IScheduledTask, IConfigurableScheduledTask
{
/// <summary>
/// Gets or sets the configuration manager.
/// </summary>
/// <value>The configuration manager.</value>
private IConfigurationManager ConfigurationManager { get; set; }
private readonly IFileSystem _fileSystem;
/// <summary>
/// Initializes a new instance of the <see cref="DeleteLogFileTask" /> class.
/// </summary>
/// <param name="configurationManager">The configuration manager.</param>
public DeleteLogFileTask(IConfigurationManager configurationManager, IFileSystem fileSystem)
{
ConfigurationManager = configurationManager;
_fileSystem = fileSystem;
}
/// <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}
};
}
/// <summary>
/// Returns the task to be executed
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
public Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
{
// Delete log files more than n days old
var minDateModified = DateTime.UtcNow.AddDays(-ConfigurationManager.CommonConfiguration.LogFileRetentionDays);
// Only delete the .txt log files, the *.log files created by serilog get managed by itself
var filesToDelete = _fileSystem.GetFiles(ConfigurationManager.CommonApplicationPaths.LogDirectoryPath, new[] { ".txt" }, true, true)
.Where(f => _fileSystem.GetLastWriteTimeUtc(f) < minDateModified)
.ToList();
var index = 0;
foreach (var file in filesToDelete)
{
double percent = index / (double) filesToDelete.Count;
progress.Report(100 * percent);
cancellationToken.ThrowIfCancellationRequested();
_fileSystem.DeleteFile(file.FullName);
index++;
}
progress.Report(100);
return Task.CompletedTask;
}
public string Key
{
get { return "CleanLogFiles"; }
}
/// <summary>
/// Gets the name of the task
/// </summary>
/// <value>The name.</value>
public string Name
{
get { return "Log file cleanup"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public string Description
{
get { return string.Format("Deletes log files that are more than {0} days old.", ConfigurationManager.CommonConfiguration.LogFileRetentionDays); }
}
/// <summary>
/// Gets the category.
/// </summary>
/// <value>The category.</value>
public string Category
{
get
{
return "Maintenance";
}
}
/// <summary>
/// Gets a value indicating whether this instance is hidden.
/// </summary>
/// <value><c>true</c> if this instance is hidden; otherwise, <c>false</c>.</value>
public bool IsHidden
{
get { return true; }
}
public bool IsEnabled
{
get { return true; }
}
public bool IsLogged
{
get { return true; }
}
}
}
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