137 lines
5.5 KiB
C#
137 lines
5.5 KiB
C#
// Copyright (C) 2015, The Duplicati Team
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// http://www.duplicati.com, info@duplicati.com
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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using System;
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using CoCoL;
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using System.Threading.Tasks;
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using Duplicati.Library.Main.Operation.Common;
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using System.Collections.Generic;
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using System.Linq;
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using Duplicati.Library.Main.Volumes;
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using System.IO;
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namespace Duplicati.Library.Main.Operation.Backup
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{
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/// <summary>
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/// This process just waits until all block processes are terminated
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/// and collects the non-written volumes.
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/// All remaining volumes are re-packed into one or more filled
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/// volumes and uploaded
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/// </summary>
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internal static class SpillCollectorProcess
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{
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public static Task Run(Options options, BackupDatabase database, ITaskReader taskreader)
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{
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return AutomationExtensions.RunTask(
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new
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{
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Input = Channels.SpillPickup.ForRead,
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Output = Channels.BackendRequest.ForWrite,
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},
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async self =>
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{
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var lst = new List<VolumeUploadRequest>();
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while(!await self.Input.IsRetiredAsync)
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try
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{
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lst.Add((VolumeUploadRequest)await self.Input.ReadAsync());
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}
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catch (Exception ex)
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{
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if (ex.IsRetiredException())
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break;
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throw;
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}
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while(lst.Count > 1)
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{
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// We ignore the stop signal, but not the pause and terminate
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await taskreader.ProgressAsync;
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VolumeUploadRequest target = null;
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var source = lst[0];
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// Finalize the current work
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source.BlockVolume.Close();
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// Remove it from the list of active operations
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lst.RemoveAt(0);
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var buffer = new byte[options.Blocksize];
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using(var rd = new BlockVolumeReader(options.CompressionModule, source.BlockVolume.LocalFilename, options))
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{
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foreach(var file in rd.Blocks)
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{
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// Grab a target
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if (target == null)
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{
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if (lst.Count == 0)
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{
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// No more targets, make one
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target = new VolumeUploadRequest(new BlockVolumeWriter(options), true);
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target.BlockVolume.VolumeID = await database.RegisterRemoteVolumeAsync(target.BlockVolume.RemoteFilename, RemoteVolumeType.Blocks, RemoteVolumeState.Temporary);
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}
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else
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{
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// Grab the next target
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target = lst[0];
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lst.RemoveAt(0);
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}
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}
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var len = rd.ReadBlock(file.Key, buffer);
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target.BlockVolume.AddBlock(file.Key, buffer, 0, len, Duplicati.Library.Interface.CompressionHint.Default);
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await database.MoveBlockToVolumeAsync(file.Key, len, source.BlockVolume.VolumeID, target.BlockVolume.VolumeID);
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if (target.BlockVolume.Filesize > options.VolumeSize - options.Blocksize)
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{
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target.BlockVolume.Close();
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await self.Output.WriteAsync(target);
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target = null;
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}
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}
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}
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// Make sure they are out of the database
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System.IO.File.Delete(source.BlockVolume.LocalFilename);
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await database.SafeDeleteRemoteVolumeAsync(source.BlockVolume.RemoteFilename);
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// Re-inject the target if it has content
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if (target != null)
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lst.Insert(lst.Count == 0 ? 0 : 1, target);
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}
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foreach(var n in lst)
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{
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// We ignore the stop signal, but not the pause and terminate
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await taskreader.ProgressAsync;
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n.BlockVolume.Close();
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await self.Output.WriteAsync(n);
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}
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});
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}
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}
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}
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