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duplicati/Duplicati/Library/Main/Operation/Restore/Channels.cs
T
Kenneth SkovhedeandGitHub d99f74ed94 Rewrite the backend manager. (#5896)
* Rewrite the backend manager.

This creates a new more logic backend manager that handles all backend operations.

For each top-level operation, there is now a single backend manager instance that is passed to sub-commands.

The internals of the backend manager are now rewritten to use async logic instead of threading.

The design uses a single task runner that dispatches operations and honors concurrent settings and limits from one place.

The logic for each operation has been moved into a separate files/classes to make it easier to understand each operation.

This fixes #5804

* Fixed a few issues with not awaiting tasks

* Fixed not creating empty databases

* Fixed an issue with hashes not being recorded on download

* Reworked the download logic to avoid attempting to decrypt the file if it has been modified.

* Review fixes

* Renamed db collector to better reflect the purpose.

* Review fixes
2025-01-28 08:54:50 +01:00

71 lines
3.4 KiB
C#

// Copyright (C) 2025, The Duplicati Team
// https://duplicati.com, hello@duplicati.com
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System.Threading.Tasks;
using CoCoL;
using Duplicati.Library.Main.Volumes;
using Duplicati.Library.Utility;
namespace Duplicati.Library.Main.Operation.Restore
{
/// <summary>
/// Named channels for the restore operation.
/// </summary>
internal class Channels
{
/// <summary>
/// The buffer size for the channels. The buffer size is the number of
/// messages that can be queued up before the sender blocks.
/// </summary>
public static readonly int BufferSize = 8;
/// <summary>
/// Channel between <see cref="FileLister"/> and <see cref="FileProcessor"/>.
/// </summary>
public readonly IChannel<FileRequest> FilesToRestore = ChannelManager.CreateChannel<FileRequest>(buffersize: BufferSize);
/// <summary>
/// Channel between <see cref="VolumeManager"/> and <see cref="VolumeDownloader"/>.
/// </summary>
public readonly IChannel<(long, Task<TempFile>)> DownloadRequest = ChannelManager.CreateChannel<(long, Task<TempFile>)>(buffersize: BufferSize);
/// <summary>
/// Channel between <see cref="VolumeDownloader"/> and <see cref="VolumeDecryptor"/>
/// </summary>
public readonly IChannel<(long, TempFile)> DecryptRequest = ChannelManager.CreateChannel<(long, TempFile)>(buffersize: BufferSize);
/// <summary>
/// Channel between <see cref="VolumeManager"/> and <see cref="VolumeDecompressor"/>
/// </summary>
public readonly IChannel<(BlockRequest, BlockVolumeReader)> DecompressionRequest = ChannelManager.CreateChannel<(BlockRequest, BlockVolumeReader)>(buffersize: BufferSize);
/// <summary>
/// Channel between <see cref="VolumeManager"/> and <see cref="BlockManager"/> holding the decompressed blocks.
public readonly IChannel<(BlockRequest, byte[])> DecompressedBlock = ChannelManager.CreateChannel<(BlockRequest, byte[])>(buffersize: BufferSize);
/// <summary>
/// Channel between <see cref="VolumeManager"/> and <see cref="BlockManager"/> / <see cref="VolumeDecryptor"/>, used for requesting and responding volumes to the manager.
/// </summary>
public readonly IChannel<object> VolumeRequestResponse = ChannelManager.CreateChannel<object>(buffersize: BufferSize);
}
}