137 lines
5.1 KiB
C#
137 lines
5.1 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2020
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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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namespace ASC.Data.Backup.Storage
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{
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internal class S3BackupStorage : IBackupStorage
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{
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private readonly string accessKeyId;
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private readonly string secretAccessKey;
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private readonly string bucket;
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private readonly string region;
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private readonly ILog log;
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public S3BackupStorage(IOptionsMonitor<ILog> options, string accessKeyId, string secretAccessKey, string bucket, string region)
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{
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log = options.CurrentValue;
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this.accessKeyId = accessKeyId;
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this.secretAccessKey = secretAccessKey;
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this.bucket = bucket;
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this.region = region;
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}
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public string Upload(string storageBasePath, string localPath, Guid userId)
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{
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string key;
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if (string.IsNullOrEmpty(storageBasePath))
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key = "backup/" + Path.GetFileName(localPath);
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else
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key = string.Concat(storageBasePath.Trim(new char[] { ' ', '/', '\\' }), "/", Path.GetFileName(localPath));
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using (var fileTransferUtility = new TransferUtility(accessKeyId, secretAccessKey, RegionEndpoint.GetBySystemName(region)))
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{
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fileTransferUtility.Upload(
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new TransferUtilityUploadRequest
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{
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BucketName = bucket,
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FilePath = localPath,
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StorageClass = S3StorageClass.StandardInfrequentAccess,
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PartSize = 6291456, // 6 MB.
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Key = key
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});
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}
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return key;
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}
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public void Download(string storagePath, string targetLocalPath)
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{
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var request = new GetObjectRequest
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{
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BucketName = bucket,
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Key = GetKey(storagePath),
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};
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using var s3 = GetClient();
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using var response = s3.GetObjectAsync(request).Result;
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response.WriteResponseStreamToFileAsync(targetLocalPath, true, new System.Threading.CancellationToken());
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}
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public void Delete(string storagePath)
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{
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using var s3 = GetClient();
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s3.DeleteObjectAsync(new DeleteObjectRequest
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{
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BucketName = bucket,
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Key = GetKey(storagePath)
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});
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}
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public bool IsExists(string storagePath)
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{
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using var s3 = GetClient();
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try
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{
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var request = new ListObjectsRequest { BucketName = bucket, Prefix = GetKey(storagePath) };
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var response = s3.ListObjectsAsync(request).Result;
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return response.S3Objects.Count > 0;
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}
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catch (AmazonS3Exception ex)
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{
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log.Warn(ex);
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return false;
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}
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}
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public string GetPublicLink(string storagePath)
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{
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using var s3 = GetClient();
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return s3.GetPreSignedURL(
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new GetPreSignedUrlRequest
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{
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BucketName = bucket,
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Key = GetKey(storagePath),
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Expires = DateTime.UtcNow.AddDays(1),
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Verb = HttpVerb.GET
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});
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}
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private string GetKey(string fileName)
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{
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// return "backup/" + Path.GetFileName(fileName);
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return fileName;
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}
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private AmazonS3Client GetClient()
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{
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return new AmazonS3Client(accessKeyId, secretAccessKey, new AmazonS3Config { RegionEndpoint = RegionEndpoint.GetBySystemName(region) });
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}
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}
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}
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