Files
duplicati/Duplicati/Library/Main/IBackendManager.cs
T
Kenneth Skovhede f03cf2f7a3 Detatch options on controller
When creating a new controller, the options dictionary was used by-reference.

This meant that code could update the options dictionary *after* creating the controller, which would not be thread-safe.

It does not have much effect on regular operations as the normal method is to create the dictionary, pass it, and not modify it.

But in the tests, we frequently re-use the dictionary and update it with new values to test various cases.

Due to the dictionary being a reference, the controller would update the dictionary to fit the operations, but this would reflect back into the tests, meaning that some tests were being run with options that were not supposed to be there.

This meant that at least two edge cases that we test for were never found to have errors, even though they do.

The first issue is the listing of files using a non-default blocksize. The second issue is recreating the database with a non-default file-hash algorithm.

This PR removes the reference passing, and fixes the issues that were uncovered.
2026-05-14 17:59:49 +02:00

194 lines
9.5 KiB
C#

// Copyright (C) 2026, 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;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Duplicati.Library.Interface;
using Duplicati.Library.Main.Database;
using Duplicati.Library.Main.Volumes;
using Duplicati.Library.Utility;
using IFileEntry = Duplicati.Library.Interface.IFileEntry;
#nullable enable
namespace Duplicati.Library.Main;
/// <summary>
/// Interface for the backend manager
/// </summary>
internal interface IBackendManager : IDisposable
{
/// <summary>
/// Uploads a block volume to the backend, including an optional index volume
/// </summary>
/// <param name="blockVolume">The block volume to upload</param>
/// <param name="indexVolume">The index volume to upload, if any</param>
/// <param name="indexVolumeFinished">The action to call when the index volume is finished</param>
/// <param name="waitForComplete">Whether to wait for the upload to complete</param>
/// <param name="onDbUpdate">The action to call when the database should be updated</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>An awaitable task</returns>
Task PutAsync(VolumeWriterBase blockVolume, IndexVolumeWriter? indexVolume, Func<Task>? indexVolumeFinished, bool waitForComplete, Func<Task>? onDbUpdate, CancellationToken cancelToken);
/// <summary>
/// Uploads a file to the backend without encryption
/// </summary>
/// <param name="remotename">The name of the file to upload to</param>
/// <param name="tempFile">The file to upload</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>An awaitable task</returns>
Task PutVerificationFileAsync(string remotename, TempFile tempFile, CancellationToken cancelToken);
/// <summary>
/// Waits for the backend queue to be empty
/// </summary>
/// <param name="cancellationToken">The cancellation token</param>
/// <returns>An awaitable task</returns>
Task WaitForEmptyAsync(CancellationToken cancellationToken);
/// <summary>
/// Waits for the backend queue to be empty and flushes any pending messages to the database
/// </summary>
/// <param name="database">The database to write pending messages to</param>
/// <param name="cancellationToken">The cancellation token</param>
/// <returns>An awaitable task</returns>
Task WaitForEmptyAsync(LocalDatabase database, CancellationToken cancellationToken);
/// <summary>
/// Lists the files on the backend
/// </summary>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>An enumerable of file entries</returns>
Task<IEnumerable<IFileEntry>> ListAsync(CancellationToken cancelToken);
/// <summary>
/// Decrypts the given file and returns the decrypted file
/// </summary>
/// <param name="volume">The file to decrypt</param>
/// <param name="volume_name">The name of the file. Used for detecting encryption algorithm if not specified in options or if it differs from the options</param>
/// <param name="options">The Duplicati options</param>
/// <param name="dispose">True if the input file should be disposed after decryption</param>
/// <returns>The decrypted file</returns>
TempFile DecryptFile(TempFile volume, string volume_name, Options options, bool dispose);
/// <summary>
/// Deletes a file on the backend
/// </summary>
/// <param name="remotename">The name of the file to delete</param>
/// <param name="size">The size of the file to delete, or -1 if not known</param>
/// <param name="waitForComplete">Whether to wait for the delete to complete</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>An awaitable task</returns>
Task DeleteAsync(string remotename, long size, bool waitForComplete, CancellationToken cancelToken);
/// <summary>
/// Applies or updates an object lock on a remote volume.
/// </summary>
/// <param name="remotename">The name of the file to lock</param>
/// <param name="lockUntilUtc">The UTC time the lock should be in effect until</param>
/// <param name="cancelToken">The cancellation token</param>
Task SetObjectLockUntilAsync(string remotename, DateTime lockUntilUtc, CancellationToken cancelToken);
/// <summary>
/// Gets the object lock expiration time for a remote volume.
/// </summary>
/// <param name="remotename">The name of the file to check</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The UTC time the lock expires, or null if no lock is set</returns>
Task<DateTime?> GetObjectLockUntilAsync(string remotename, CancellationToken cancelToken);
/// <summary>
/// Gets the quota information for the backend
/// </summary>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The quota information, or null if not available or disabled</returns>
Task<IQuotaInfo?> GetQuotaInfoAsync(CancellationToken cancelToken);
/// <summary>
/// Gets a file with the hash and size
/// </summary>
/// <param name="remotename">The name of the file to get</param>
/// <param name="hash">The hash of the file to get, or <c>null</c> if not known</param>
/// <param name="size">The size of the file to get, or -1 if not known</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The file, hash, and size</returns>
Task<(TempFile File, string Hash, long Size)> GetWithInfoAsync(string remotename, string hash, long size, CancellationToken cancelToken);
/// <summary>
/// Gets a file from the backend
/// </summary>
/// <param name="remotename">The name of the file to get</param>
/// <param name="hash">The hash of the file to get, or <c>null</c> if not known</param>
/// <param name="size">The size of the file to get, or -1 if not known</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The downloaded file</returns>
Task<TempFile> GetAsync(string remotename, string hash, long size, CancellationToken cancelToken);
/// <summary>
/// Gets a file from the backend without decrypting it
/// </summary>
/// <param name="remotename">The name of the remote volume</param>
/// <param name="hash">The hash of the volume</param>
/// <param name="size">The size of the volume</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The downloaded file</returns>
Task<TempFile> GetDirectAsync(string remotename, string hash, long size, CancellationToken cancelToken);
/// <summary>
/// Performs a download of the files specified, with pre-fetch to overlap the download and processing
/// </summary>
/// <param name="volumes">The volumes to download</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The downloaded files, hash, size, and name</returns>
IAsyncEnumerable<(TempFile File, string Hash, long Size, string Name)> GetFilesOverlappedAsync(IEnumerable<IRemoteVolume> volumes, CancellationToken cancelToken);
/// <summary>
/// Performs a direct download of the files specified, with pre-fetch to overlap the download and processing
/// </summary>
/// <param name="volumes">The volumes to download</param>
/// <param name="cancelToken">The cancellation token</param>
/// <returns>The downloaded files and the volume they came from</returns>
IAsyncEnumerable<(TempFile File, string Name)> GetFilesOverlappedDirectAsync(IEnumerable<IRemoteVolume> volumes, CancellationToken cancelToken);
/// <summary>
/// Flushes the database messages to the database
/// </summary>
/// <param name="database">The database to write to</param>
/// <param name="cancellationToken">The cancellation token</param>
/// <returns></returns>
Task FlushPendingMessagesAsync(LocalDatabase database, CancellationToken cancellationToken);
/// <summary>
/// Updates the throttle values for upload and download
/// </summary>
/// <param name="maxUploadPrSecond">The maximum upload speed in bytes per second</param>
/// <param name="maxDownloadPrSecond">The maximum download speed in bytes per second</param>
void UpdateThrottleValues(long maxUploadPrSecond, long maxDownloadPrSecond);
/// <summary>
/// Indicates whether the backend supports object locking operations.
/// </summary>
bool SupportsObjectLocking { get; }
}