2019-06-04 14:43:20 +00:00
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/*
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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.Collections.Generic;
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using System.IO;
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2019-08-15 12:04:42 +00:00
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using System.Linq;
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2019-06-04 14:43:20 +00:00
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using ASC.Common.Logging;
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using ASC.Data.Storage;
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namespace ASC.Core.ChunkedUploader
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{
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public class CommonChunkedUploadSessionHolder
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{
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public static readonly TimeSpan SlidingExpiration = TimeSpan.FromHours(12);
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private IDataStore DataStore { get; set; }
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private string Domain { get; set; }
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private long MaxChunkUploadSize { get; set; }
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private const string StoragePath = "sessions";
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public CommonChunkedUploadSessionHolder(IDataStore dataStore, string domain,
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2019-08-15 12:04:42 +00:00
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long maxChunkUploadSize = 10 * 1024 * 1024)
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2019-06-04 14:43:20 +00:00
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{
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DataStore = dataStore;
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Domain = domain;
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MaxChunkUploadSize = maxChunkUploadSize;
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}
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public void DeleteExpired()
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{
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// clear old sessions
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try
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{
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DataStore.DeleteExpired(Domain, StoragePath, SlidingExpiration);
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}
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catch (Exception err)
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{
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LogManager.GetLogger("ASC").Error(err);
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}
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}
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public void Store(CommonChunkedUploadSession s)
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{
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2019-08-15 15:08:40 +00:00
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using var stream = s.Serialize();
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DataStore.SavePrivate(Domain, GetPathWithId(s.Id), stream, s.Expired);
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2019-06-04 14:43:20 +00:00
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}
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public void Remove(CommonChunkedUploadSession s)
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{
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DataStore.Delete(Domain, GetPathWithId(s.Id));
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}
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public CommonChunkedUploadSession Get(string sessionId)
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{
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2019-08-15 15:08:40 +00:00
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using var stream = DataStore.GetReadStream(Domain, GetPathWithId(sessionId));
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return CommonChunkedUploadSession.Deserialize(stream);
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2019-06-04 14:43:20 +00:00
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}
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public void Init(CommonChunkedUploadSession chunkedUploadSession)
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{
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if (chunkedUploadSession.BytesTotal < MaxChunkUploadSize)
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{
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chunkedUploadSession.UseChunks = false;
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return;
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}
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var tempPath = Guid.NewGuid().ToString();
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var uploadId = DataStore.InitiateChunkedUpload(Domain, tempPath);
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chunkedUploadSession.TempPath = tempPath;
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chunkedUploadSession.UploadId = uploadId;
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}
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public void Finalize(CommonChunkedUploadSession uploadSession)
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{
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var tempPath = uploadSession.TempPath;
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var uploadId = uploadSession.UploadId;
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var eTags = uploadSession.GetItemOrDefault<List<string>>("ETag")
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.Select((x, i) => new KeyValuePair<int, string>(i + 1, x))
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.ToDictionary(x => x.Key, x => x.Value);
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DataStore.FinalizeChunkedUpload(Domain, tempPath, uploadId, eTags);
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}
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public void Move(CommonChunkedUploadSession chunkedUploadSession, string newPath)
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{
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DataStore.Move(Domain, chunkedUploadSession.TempPath, string.Empty, newPath);
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}
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public void Abort(CommonChunkedUploadSession uploadSession)
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{
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if (uploadSession.UseChunks)
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{
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var tempPath = uploadSession.TempPath;
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var uploadId = uploadSession.UploadId;
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DataStore.AbortChunkedUpload(Domain, tempPath, uploadId);
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}
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else if (!string.IsNullOrEmpty(uploadSession.ChunksBuffer))
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{
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File.Delete(uploadSession.ChunksBuffer);
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}
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}
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public void UploadChunk(CommonChunkedUploadSession uploadSession, Stream stream, long length)
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{
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var tempPath = uploadSession.TempPath;
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var uploadId = uploadSession.UploadId;
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var chunkNumber = uploadSession.GetItemOrDefault<int>("ChunksUploaded") + 1;
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var eTag = DataStore.UploadChunk(Domain, tempPath, uploadId, stream, MaxChunkUploadSize, chunkNumber, length);
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uploadSession.Items["ChunksUploaded"] = chunkNumber;
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uploadSession.BytesUploaded += length;
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var eTags = uploadSession.GetItemOrDefault<List<string>>("ETag") ?? new List<string>();
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eTags.Add(eTag);
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uploadSession.Items["ETag"] = eTags;
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}
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public Stream UploadSingleChunk(CommonChunkedUploadSession uploadSession, Stream stream, long chunkLength)
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{
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if (uploadSession.BytesTotal == 0)
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uploadSession.BytesTotal = chunkLength;
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if (uploadSession.BytesTotal >= chunkLength)
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{
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//This is hack fixing strange behaviour of plupload in flash mode.
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if (string.IsNullOrEmpty(uploadSession.ChunksBuffer))
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uploadSession.ChunksBuffer = Path.GetTempFileName();
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using (var bufferStream = new FileStream(uploadSession.ChunksBuffer, FileMode.Append))
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{
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stream.StreamCopyTo(bufferStream);
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}
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uploadSession.BytesUploaded += chunkLength;
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if (uploadSession.BytesTotal == uploadSession.BytesUploaded)
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{
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return new FileStream(uploadSession.ChunksBuffer, FileMode.Open, FileAccess.Read, FileShare.None,
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4096, FileOptions.DeleteOnClose);
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}
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}
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return Stream.Null;
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}
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private string GetPathWithId(string id)
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{
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return Path.Combine(StoragePath, id + ".session");
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}
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}
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}
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