124 lines
4.7 KiB
C#
124 lines
4.7 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;
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public class CrossModuleTransferUtility
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{
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private readonly ILogger _logger;
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private readonly IDataStore _source;
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private readonly IDataStore _destination;
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private readonly long _maxChunkUploadSize;
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private readonly int _chunkSize;
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private readonly TempStream _tempStream;
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private readonly TempPath _tempPath;
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public CrossModuleTransferUtility(
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ILogger option,
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TempStream tempStream,
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TempPath tempPath,
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IDataStore source,
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IDataStore destination)
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{
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_logger = option;
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_tempStream = tempStream;
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_tempPath = tempPath;
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_source = source ?? throw new ArgumentNullException(nameof(source));
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_destination = destination ?? throw new ArgumentNullException(nameof(destination));
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_maxChunkUploadSize = 10 * 1024 * 1024;
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_chunkSize = 5 * 1024 * 1024;
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}
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public async ValueTask CopyFileAsync(string srcDomain, string srcPath, string destDomain, string destPath)
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{
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ArgumentNullException.ThrowIfNull(srcDomain);
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ArgumentNullException.ThrowIfNull(srcPath);
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ArgumentNullException.ThrowIfNull(destDomain);
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ArgumentNullException.ThrowIfNull(destPath);
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await using var stream = await _source.GetReadStreamAsync(srcDomain, srcPath);
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if (stream.Length < _maxChunkUploadSize)
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{
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await _destination.SaveAsync(destDomain, destPath, stream);
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}
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else
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{
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var session = new CommonChunkedUploadSession(stream.Length);
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var holder = new CommonChunkedUploadSessionHolder(_tempPath, _destination, destDomain);
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await holder.InitAsync(session);
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try
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{
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Stream memstream = null;
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try
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{
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while (GetStream(stream, out memstream))
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{
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memstream.Seek(0, SeekOrigin.Begin);
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await holder.UploadChunkAsync(session, memstream, _chunkSize);
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await memstream.DisposeAsync();
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}
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}
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finally
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{
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if (memstream != null)
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{
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await memstream.DisposeAsync();
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}
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}
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await holder.FinalizeAsync(session);
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await _destination.MoveAsync(destDomain, session.TempPath, destDomain, destPath);
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}
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catch (Exception ex)
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{
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_logger.ErrorCopyFile(ex);
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await holder.AbortAsync(session);
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}
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}
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}
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private bool GetStream(Stream stream, out Stream memstream)
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{
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memstream = _tempStream.Create();
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var total = 0;
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int readed;
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const int portion = 2048;
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var buffer = new byte[portion];
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while ((readed = stream.Read(buffer, 0, portion)) > 0)
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{
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memstream.Write(buffer, 0, readed);
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total += readed;
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if (total >= _chunkSize)
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{
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break;
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}
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}
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return total > 0;
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}
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}
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