120 lines
4.9 KiB
C#
120 lines
4.9 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.IO;
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using ASC.Common.Logging;
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using ASC.Core.ChunkedUploader;
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namespace ASC.Data.Storage
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{
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public class CrossModuleTransferUtility
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{
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private static readonly ILog Log = LogManager.GetLogger("ASC.CrossModuleTransferUtility");
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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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public CrossModuleTransferUtility(IDataStore source, IDataStore destination)
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{
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this.source = source ?? throw new ArgumentNullException("source");
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this.destination = destination ?? throw new ArgumentNullException("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 void CopyFile(string srcDomain, string srcPath, string destDomain, string destPath)
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{
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if (srcDomain == null) throw new ArgumentNullException("srcDomain");
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if (srcPath == null) throw new ArgumentNullException("srcPath");
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if (destDomain == null) throw new ArgumentNullException("destDomain");
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if (destPath == null) throw new ArgumentNullException("destPath");
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using (var stream = source.GetReadStream(srcDomain, srcPath))
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{
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if (stream.Length < maxChunkUploadSize)
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{
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destination.Save(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(destination, destDomain);
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holder.Init(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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holder.UploadChunk(session, memstream, chunksize);
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memstream.Dispose();
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memstream = null;
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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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memstream.Dispose();
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}
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}
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holder.Finalize(session);
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destination.Move(destDomain, session.TempPath, destDomain, destPath);
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}
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catch (Exception ex)
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{
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Log.Error("Copy File", ex);
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holder.Abort(session);
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}
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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) break;
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}
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return total > 0;
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}
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}
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}
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