DocSpace-buildtools/common/services/ASC.Data.Storage.Encryption/EncryptionWorker.cs

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/*
*
* (c) Copyright Ascensio System Limited 2010-2020
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*
* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
*
* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
*
* You can contact Ascensio System SIA by email at sales@onlyoffice.com
*
* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
*
* Pursuant to Section 7 <EFBFBD> 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
* relevant author attributions when distributing the software. If the display of the logo in its graphic
* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
* in every copy of the program you distribute.
* Pursuant to Section 7 <EFBFBD> 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
*/
using System;
using System.Threading;
using System.Threading.Tasks;
using ASC.Common;
using ASC.Common.Caching;
using Microsoft.Extensions.DependencyInjection;
namespace ASC.Data.Storage.Encryption
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{
[Singletone]
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public class EncryptionWorker
{
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private CancellationTokenSource TokenSource { get; set; }
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private ICache Cache { get; }
private object Locker { get; }
private FactoryOperation FactoryOperation { get; }
public EncryptionWorker(FactoryOperation factoryOperation)
{
Cache = AscCache.Memory;
Locker = new object();
FactoryOperation = factoryOperation;
}
public void Start(EncryptionSettingsProto encryptionSettings)
{
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EncryptionOperation encryptionOperation;
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lock (Locker)
{
if (Cache.Get<EncryptionOperation>(GetCacheKey()) != null) return;
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TokenSource = new CancellationTokenSource();
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encryptionOperation = FactoryOperation.CreateOperation(encryptionSettings);
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Cache.Insert(GetCacheKey(), encryptionOperation, DateTime.MaxValue);
}
var task = new Task(encryptionOperation.RunJob, TokenSource.Token, TaskCreationOptions.LongRunning);
task.ConfigureAwait(false)
.GetAwaiter()
.OnCompleted(() =>
{
lock (Locker)
{
Cache.Remove(GetCacheKey());
}
});
task.Start();
}
public void Stop()
{
TokenSource.Cancel();
}
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public string GetCacheKey()
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{
return typeof(EncryptionOperation).FullName;
}
}
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[Singletone(Additional = typeof(FactoryOperationExtension))]
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public class FactoryOperation
{
private IServiceProvider ServiceProvider { get; set; }
public FactoryOperation(IServiceProvider serviceProvider)
{
ServiceProvider = serviceProvider;
}
public EncryptionOperation CreateOperation(EncryptionSettingsProto encryptionSettings)
{
var item = ServiceProvider.GetService<EncryptionOperation>();
item.Init(encryptionSettings);
return item;
}
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}
public class FactoryOperationExtension
{
public static void Register(DIHelper dIHelper)
{
dIHelper.TryAdd<EncryptionOperation>();
}
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}
}