Mercurial > hg > orthanc
annotate Core/FileStorage/CompressedFileStorageAccessor.cpp @ 1347:60cc0ee61edb
fix issue #32
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 21 Apr 2015 17:43:05 +0200 |
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221 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
221 | 5 * |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
10 * | |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
22 * | |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
32 | |
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33 #include "../PrecompiledHeaders.h" |
221 | 34 #include "CompressedFileStorageAccessor.h" |
35 | |
36 #include "../OrthancException.h" | |
37 #include "FileStorageAccessor.h" | |
38 #include "../HttpServer/BufferHttpSender.h" | |
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39 #include "../Uuid.h" |
221 | 40 |
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41 #include <memory> |
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42 #include <glog/logging.h> |
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43 |
221 | 44 namespace Orthanc |
45 { | |
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46 FileInfo CompressedFileStorageAccessor::WriteInternal(const void* data, |
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47 size_t size, |
233 | 48 FileContentType type) |
221 | 49 { |
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50 std::string uuid = Toolbox::GenerateUuid(); |
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51 |
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52 std::string md5; |
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53 |
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54 if (storeMD5_) |
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55 { |
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56 Toolbox::ComputeMD5(md5, data, size); |
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57 } |
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58 |
221 | 59 switch (compressionType_) |
60 { | |
61 case CompressionType_None: | |
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62 { |
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63 GetStorageArea().Create(uuid.c_str(), data, size, type); |
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64 return FileInfo(uuid, type, size, md5); |
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65 } |
221 | 66 |
67 case CompressionType_Zlib: | |
68 { | |
69 std::string compressed; | |
70 zlib_.Compress(compressed, data, size); | |
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71 |
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72 std::string compressedMD5; |
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73 |
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74 if (storeMD5_) |
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75 { |
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76 Toolbox::ComputeMD5(compressedMD5, compressed); |
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77 } |
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78 |
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79 if (compressed.size() > 0) |
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80 { |
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81 GetStorageArea().Create(uuid.c_str(), &compressed[0], compressed.size(), type); |
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82 } |
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83 else |
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84 { |
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85 GetStorageArea().Create(uuid.c_str(), NULL, 0, type); |
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86 } |
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87 |
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88 return FileInfo(uuid, type, size, md5, |
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89 CompressionType_Zlib, compressed.size(), compressedMD5); |
221 | 90 } |
91 | |
92 default: | |
93 throw OrthancException(ErrorCode_NotImplemented); | |
94 } | |
95 } | |
96 | |
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97 |
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98 CompressedFileStorageAccessor::CompressedFileStorageAccessor() : |
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99 storage_(NULL), |
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100 compressionType_(CompressionType_None) |
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101 { |
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102 } |
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103 |
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104 |
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105 CompressedFileStorageAccessor::CompressedFileStorageAccessor(IStorageArea& storage) : |
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106 storage_(&storage), |
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107 compressionType_(CompressionType_None) |
221 | 108 { |
109 } | |
110 | |
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111 |
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112 IStorageArea& CompressedFileStorageAccessor::GetStorageArea() |
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113 { |
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114 if (storage_ == NULL) |
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115 { |
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116 LOG(ERROR) << "No storage area is currently available"; |
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117 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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118 } |
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119 |
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120 return *storage_; |
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121 } |
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122 |
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123 |
221 | 124 void CompressedFileStorageAccessor::Read(std::string& content, |
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125 const std::string& uuid, |
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126 FileContentType type) |
221 | 127 { |
128 switch (compressionType_) | |
129 { | |
130 case CompressionType_None: | |
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131 GetStorageArea().Read(content, uuid, type); |
221 | 132 break; |
133 | |
134 case CompressionType_Zlib: | |
135 { | |
136 std::string compressed; | |
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137 GetStorageArea().Read(compressed, uuid, type); |
221 | 138 zlib_.Uncompress(content, compressed); |
139 break; | |
140 } | |
141 | |
142 default: | |
143 throw OrthancException(ErrorCode_NotImplemented); | |
144 } | |
145 } | |
146 | |
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147 HttpFileSender* CompressedFileStorageAccessor::ConstructHttpFileSender(const std::string& uuid, |
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148 FileContentType type) |
221 | 149 { |
150 switch (compressionType_) | |
151 { | |
152 case CompressionType_None: | |
153 { | |
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154 FileStorageAccessor uncompressedAccessor(GetStorageArea()); |
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155 return uncompressedAccessor.ConstructHttpFileSender(uuid, type); |
221 | 156 } |
157 | |
158 case CompressionType_Zlib: | |
159 { | |
160 std::string compressed; | |
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161 GetStorageArea().Read(compressed, uuid, type); |
221 | 162 |
163 std::auto_ptr<BufferHttpSender> sender(new BufferHttpSender); | |
164 zlib_.Uncompress(sender->GetBuffer(), compressed); | |
165 | |
166 return sender.release(); | |
167 } | |
168 | |
169 default: | |
170 throw OrthancException(ErrorCode_NotImplemented); | |
171 } | |
172 } | |
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173 |
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174 |
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175 void CompressedFileStorageAccessor::Remove(const std::string& uuid, |
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176 FileContentType type) |
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177 { |
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178 GetStorageArea().Remove(uuid, type); |
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179 } |
221 | 180 } |