duplicati/Duplicati/Library/RestAPI/Abstractions/IQueueRunnerService.cs
2025-05-03 16:25:24 +02:00

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4.2 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.
#nullable enable
using System;
using System.Collections.Generic;
using Duplicati.Library.Interface;
using Duplicati.Server.Serialization.Interface;
namespace Duplicati.WebserverCore.Abstractions;
/// <summary>
/// A cached task result
/// </summary>
/// <param name="TaskID">The task ID</param>
/// <param name="BackupId">The backup ID</param>
/// <param name="TaskStarted">The time the task started</param>
/// <param name="TaskFinished">The time the task finished</param>
/// <param name="Exception">The exception that was thrown</param>
public sealed record CachedTaskResult(long TaskID, string? BackupId, DateTime? TaskStarted, DateTime? TaskFinished, Exception? Exception);
/// <summary>
/// Class to encapsulate a thread that runs a list of queued operations
/// </summary>
/// <typeparam name="Tx">The type to operate on</typeparam>
public interface IQueueRunnerService
{
/// <summary>
/// Returns a copy of the current tasks in the queue
/// </summary>
/// <returns>A list of queued tasks</returns>
List<IQueuedTask> GetCurrentTasks();
/// <summary>
/// Gets a flag indicating if the queue is currently executing a task
/// </summary>
/// <returns>True if the queue is executing a task, false otherwise</returns>
bool GetIsActive();
/// <summary>
/// Returns the currently executing task in the queue
/// </summary>
/// <returns>The currently executing task, or null if no task is executing</returns>
IQueuedTask? GetCurrentTask();
/// <summary>
/// Gets the cached task results for a given task ID
/// </summary>
/// <param name="taskID">The task ID</param>
/// <returns>The cached task result</returns>
CachedTaskResult? GetCachedTaskResults(long taskID);
/// <summary>
/// Adds a task to the queue
/// </summary>
/// <param name="task">The task to add</param>
long AddTask(IQueuedTask task);
/// <summary>
/// Adds a task to the queue, optionally skipping the queue
/// </summary>
/// <param name="task">The task to add</param>
/// <param name="skipQueue">Whether to skip the queue</param>
long AddTask(IQueuedTask task, bool skipQueue);
/// <summary>
/// Removes a task from the queue
/// </summary>
/// <param name="wait">Whether to wait for the task to finish</param>
void Terminate(bool wait);
/// <summary>
/// Resumes processing items in the queue
/// </summary>
void Resume();
/// <summary>
/// Pauses processing items in the queue
/// </summary>
void Pause();
/// <summary>
/// Gets the IDs of the tasks in the worker queue
/// </summary>
/// <returns>A list of tuples containing the task ID and backup ID</returns>
IList<Tuple<long, string?>> GetQueueWithIds();
/// <summary>
/// Runs a task immediately, bypassing the queue.
/// Note that the task will run concurrently with the queue tasks and may cause database lock issues.
/// </summary>
/// <param name="task">The task to run</param>
IBasicResults? RunImmediately(IQueuedTask task);
}