More DI

MediaBrowser.Common.Implementations/ScheduledTasks/Tasks/DeleteLogFileTask.cs

@@ -0,0 +1,107 @@
+using MediaBrowser.Common.Kernel;
+using MediaBrowser.Common.ScheduledTasks;
+using MediaBrowser.Model.Logging;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Common.Implementations.ScheduledTasks.Tasks
+{
+    /// <summary>
+    /// Deletes old log files
+    /// </summary>
+    public class DeleteLogFileTask : BaseScheduledTask<IKernel>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="DeleteLogFileTask" /> class.
+        /// </summary>
+        /// <param name="kernel">The kernel.</param>
+        /// <param name="taskManager">The task manager.</param>
+        /// <param name="logger">The logger.</param>
+        public DeleteLogFileTask(IKernel kernel, ITaskManager taskManager, ILogger logger)
+            : base(kernel, taskManager, logger)
+        {
+        }
+
+        /// <summary>
+        /// Creates the triggers that define when the task will run
+        /// </summary>
+        /// <returns>IEnumerable{BaseTaskTrigger}.</returns>
+        public override IEnumerable<ITaskTrigger> GetDefaultTriggers()
+        {
+            var trigger = new DailyTrigger { TimeOfDay = TimeSpan.FromHours(2) }; //2am
+
+            return new[] { trigger };
+        }
+
+        /// <summary>
+        /// Returns the task to be executed
+        /// </summary>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <param name="progress">The progress.</param>
+        /// <returns>Task.</returns>
+        protected override Task ExecuteInternal(CancellationToken cancellationToken, IProgress<double> progress)
+        {
+            return Task.Run(() =>
+            {
+                // Delete log files more than n days old
+                var minDateModified = DateTime.UtcNow.AddDays(-(Kernel.Configuration.LogFileRetentionDays));
+
+                var filesToDelete = new DirectoryInfo(Kernel.ApplicationPaths.LogDirectoryPath).EnumerateFileSystemInfos("*", SearchOption.AllDirectories)
+                              .Where(f => f.LastWriteTimeUtc < minDateModified)
+                              .ToList();
+
+                var index = 0;
+
+                foreach (var file in filesToDelete)
+                {
+                    double percent = index;
+                    percent /= filesToDelete.Count;
+
+                    progress.Report(100 * percent);
+
+                    cancellationToken.ThrowIfCancellationRequested();
+
+                    File.Delete(file.FullName);
+
+                    index++;
+                }
+
+                progress.Report(100);
+            });
+        }
+
+        /// <summary>
+        /// Gets the name of the task
+        /// </summary>
+        /// <value>The name.</value>
+        public override string Name
+        {
+            get { return "Log file cleanup"; }
+        }
+
+        /// <summary>
+        /// Gets the description.
+        /// </summary>
+        /// <value>The description.</value>
+        public override string Description
+        {
+            get { return string.Format("Deletes log files that are more than {0} days old.", Kernel.Configuration.LogFileRetentionDays); }
+        }
+
+        /// <summary>
+        /// Gets the category.
+        /// </summary>
+        /// <value>The category.</value>
+        public override string Category
+        {
+            get
+            {
+                return "Maintenance";
+            }
+        }
+    }
+}