146 lines
5.1 KiB
C#
146 lines
5.1 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Data.Storage.S3;
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public class S3UploadGuard
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{
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public Configuration.Storage Storage { get; }
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private readonly CoreSettings _coreSettings;
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private string _accessKey;
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private string _secretAccessKey;
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private string _bucket;
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private string _region;
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private bool _configErrors;
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private bool _configured;
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public S3UploadGuard(CoreSettings coreSettings, Configuration.Storage storage)
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{
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_coreSettings = coreSettings;
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Storage = storage;
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}
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public void DeleteExpiredUploadsAsync(TimeSpan trustInterval)
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{
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var task = new Task(async () =>
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{
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await DeleteExpiredUploadsActionAsync(trustInterval);
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}, TaskCreationOptions.LongRunning);
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task.Start();
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}
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private Task DeleteExpiredUploadsActionAsync(TimeSpan trustInterval)
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{
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Configure();
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if (_configErrors)
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{
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return Task.CompletedTask;
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}
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return InternalDeleteExpiredUploadsActionAsync(trustInterval);
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}
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private async Task InternalDeleteExpiredUploadsActionAsync(TimeSpan trustInterval)
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{
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using var s3 = GetClient();
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var nextKeyMarker = string.Empty;
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var nextUploadIdMarker = string.Empty;
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bool isTruncated;
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do
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{
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var request = new ListMultipartUploadsRequest { BucketName = _bucket };
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if (!string.IsNullOrEmpty(nextKeyMarker))
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{
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request.KeyMarker = nextKeyMarker;
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}
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if (!string.IsNullOrEmpty(nextUploadIdMarker))
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{
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request.UploadIdMarker = nextUploadIdMarker;
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}
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var response = await s3.ListMultipartUploadsAsync(request);
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foreach (var u in response.MultipartUploads.Where(x => x.Initiated + trustInterval <= DateTime.UtcNow))
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{
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await AbortMultipartUploadAsync(u, s3);
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}
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isTruncated = response.IsTruncated;
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nextKeyMarker = response.NextKeyMarker;
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nextUploadIdMarker = response.NextUploadIdMarker;
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}
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while (isTruncated);
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}
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private async Task AbortMultipartUploadAsync(MultipartUpload u, AmazonS3Client client)
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{
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var request = new AbortMultipartUploadRequest
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{
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BucketName = _bucket,
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Key = u.Key,
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UploadId = u.UploadId,
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};
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await client.AbortMultipartUploadAsync(request);
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}
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private AmazonS3Client GetClient()
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{
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var s3Config = new AmazonS3Config { UseHttp = true, MaxErrorRetry = 3, RegionEndpoint = RegionEndpoint.GetBySystemName(_region) };
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return new AmazonS3Client(_accessKey, _secretAccessKey, s3Config);
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}
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private void Configure()
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{
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if (!_configured)
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{
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var handler = Storage.GetHandler("s3");
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if (handler != null)
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{
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var props = handler.GetProperties();
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_bucket = props["bucket"];
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_accessKey = props["acesskey"];
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_secretAccessKey = props["secretaccesskey"];
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_region = props["region"];
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}
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_configErrors = string.IsNullOrEmpty(_coreSettings.BaseDomain) //localhost
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|| string.IsNullOrEmpty(_accessKey)
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|| string.IsNullOrEmpty(_secretAccessKey)
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|| string.IsNullOrEmpty(_bucket)
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|| string.IsNullOrEmpty(_region);
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_configured = true;
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}
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}
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}
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