Pushing missing changes

MediaBrowser.Controller/IO/FileSystemManager.cs

@@ -0,0 +1,112 @@
+using MediaBrowser.Common.IO;
+using MediaBrowser.Common.Kernel;
+using MediaBrowser.Controller.Entities;
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.IO
+{
+    /// <summary>
+    /// This class will manage our file system watching and modifications.  Any process that needs to
+    /// modify the directories that the system is watching for changes should use the methods of
+    /// this class to do so.  This way we can have the watchers correctly respond to only external changes.
+    /// </summary>
+    public class FileSystemManager : BaseManager<Kernel>
+    {
+        /// <summary>
+        /// Gets or sets the directory watchers.
+        /// </summary>
+        /// <value>The directory watchers.</value>
+        private DirectoryWatchers DirectoryWatchers { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FileSystemManager" /> class.
+        /// </summary>
+        /// <param name="kernel">The kernel.</param>
+        public FileSystemManager(Kernel kernel)
+            : base(kernel)
+        {
+            DirectoryWatchers = new DirectoryWatchers();
+        }
+
+        /// <summary>
+        /// Start the directory watchers on our library folders
+        /// </summary>
+        public void StartWatchers()
+        {
+            DirectoryWatchers.Start();
+        }
+
+        /// <summary>
+        /// Saves to library filesystem.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="path">The path.</param>
+        /// <param name="dataToSave">The data to save.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        /// <exception cref="System.ArgumentNullException"></exception>
+        public async Task SaveToLibraryFilesystem(BaseItem item, string path, Stream dataToSave, CancellationToken cancellationToken)
+        {
+            if (item == null)
+            {
+                throw new ArgumentNullException();
+            }
+            if (string.IsNullOrEmpty(path))
+            {
+                throw new ArgumentNullException();
+            }
+            if (dataToSave == null)
+            {
+                throw new ArgumentNullException();
+            }
+            if (cancellationToken == null)
+            {
+                throw new ArgumentNullException();
+            }
+     
+            cancellationToken.ThrowIfCancellationRequested();
+
+            //Tell the watchers to ignore
+            DirectoryWatchers.TemporarilyIgnore(path);
+
+            //Make the mod
+
+            dataToSave.Position = 0;
+
+            try
+            {
+                using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous))
+                {
+                    await dataToSave.CopyToAsync(fs, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);
+
+                    dataToSave.Dispose();
+
+                    // If this is ever used for something other than metadata we can add a file type param
+                    item.ResolveArgs.AddMetadataFile(path);
+                }
+            }
+            finally
+            {
+                //Remove the ignore
+                DirectoryWatchers.RemoveTempIgnore(path);
+            }
+        }
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected override void Dispose(bool dispose)
+        {
+            if (dispose)
+            {
+                DirectoryWatchers.Dispose();
+            }
+
+            base.Dispose(dispose);
+        }
+    }
+}