151 lines
5.3 KiB
C#
151 lines
5.3 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2018
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*
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* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
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* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
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* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
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*
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* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*
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* You can contact Ascensio System SIA by email at sales@onlyoffice.com
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*
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* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
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* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
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*
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* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
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* relevant author attributions when distributing the software. If the display of the logo in its graphic
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* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
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* in every copy of the program you distribute.
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* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
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*/
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using System;
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using System.Linq;
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using System.Threading.Tasks;
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using Amazon;
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using Amazon.S3;
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using Amazon.S3.Model;
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using ASC.Core;
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namespace ASC.Data.Storage.S3
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{
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public class S3UploadGuard
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{
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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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private CoreSettings CoreSettings { get; }
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public Configuration.Storage Storage { get; }
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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(() =>
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{
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DeleteExpiredUploads(trustInterval);
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}, TaskCreationOptions.LongRunning);
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task.Start();
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}
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private void DeleteExpiredUploads(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;
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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 = s3.ListMultipartUploadsAsync(request).Result;
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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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AbortMultipartUpload(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 void AbortMultipartUpload(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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client.AbortMultipartUploadAsync(request).Wait();
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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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}
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