Mercurial > hg > orthanc

annotate Core/FileStorage/StorageAccessor.cpp @ 3779:64a095d133a8 Orthanc-1.6.0

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Orthanc-1.6.0
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 18 Mar 2020 13:12:46 +0100
parents 2a170a8f1faf
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "StorageAccessor.h"
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36
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37 #include "../Compatibility.h"
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38 #include "../Compression/ZlibCompressor.h"
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39 #include "../MetricsRegistry.h"
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40 #include "../OrthancException.h"
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41 #include "../Toolbox.h"
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42
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43 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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44 # include "../HttpServer/HttpStreamTranscoder.h"
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45 #endif
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46
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48 static const std::string METRICS_CREATE = "orthanc_storage_create_duration_ms";
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49 static const std::string METRICS_READ = "orthanc_storage_read_duration_ms";
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50 static const std::string METRICS_REMOVE = "orthanc_storage_remove_duration_ms";
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52
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53 namespace Orthanc
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54 {
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55 class StorageAccessor::MetricsTimer : public boost::noncopyable
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56 {
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57 private:
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58 std::unique_ptr<MetricsRegistry::Timer> timer_;
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60 public:
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61 MetricsTimer(StorageAccessor& that,
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62 const std::string& name)
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63 {
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64 if (that.metrics_ != NULL)
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65 {
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66 timer_.reset(new MetricsRegistry::Timer(*that.metrics_, name));
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67 }
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68 }
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69 };
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71
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72 FileInfo StorageAccessor::Write(const void* data,
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73 size_t size,
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74 FileContentType type,
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75 CompressionType compression,
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76 bool storeMd5)
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77 {
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78 std::string uuid = Toolbox::GenerateUuid();
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79
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80 std::string md5;
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81
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82 if (storeMd5)
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83 {
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84 Toolbox::ComputeMD5(md5, data, size);
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85 }
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86
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87 switch (compression)
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88 {
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89 case CompressionType_None:
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90 {
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91 MetricsTimer timer(*this, METRICS_CREATE);
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92
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93 area_.Create(uuid, data, size, type);
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94 return FileInfo(uuid, type, size, md5);
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95 }
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96
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97 case CompressionType_ZlibWithSize:
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98 {
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99 ZlibCompressor zlib;
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100
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101 std::string compressed;
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102 zlib.Compress(compressed, data, size);
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103
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104 std::string compressedMD5;
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105
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106 if (storeMd5)
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107 {
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108 Toolbox::ComputeMD5(compressedMD5, compressed);
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109 }
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110
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111 {
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112 MetricsTimer timer(*this, METRICS_CREATE);
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113
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114 if (compressed.size() > 0)
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115 {
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116 area_.Create(uuid, &compressed[0], compressed.size(), type);
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117 }
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118 else
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119 {
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120 area_.Create(uuid, NULL, 0, type);
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121 }
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122 }
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123
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124 return FileInfo(uuid, type, size, md5,
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125 CompressionType_ZlibWithSize, compressed.size(), compressedMD5);
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126 }
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127
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128 default:
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129 throw OrthancException(ErrorCode_NotImplemented);
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130 }
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131 }
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132
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133
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134 void StorageAccessor::Read(std::string& content,
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135 const FileInfo& info)
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136 {
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137 switch (info.GetCompressionType())
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138 {
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139 case CompressionType_None:
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140 {
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141 MetricsTimer timer(*this, METRICS_READ);
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142 area_.Read(content, info.GetUuid(), info.GetContentType());
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143 break;
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144 }
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145
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146 case CompressionType_ZlibWithSize:
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147 {
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148 ZlibCompressor zlib;
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149
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150 std::string compressed;
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151
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152 {
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153 MetricsTimer timer(*this, METRICS_READ);
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154 area_.Read(compressed, info.GetUuid(), info.GetContentType());
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155 }
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156
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157 IBufferCompressor::Uncompress(content, zlib, compressed);
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158 break;
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159 }
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160
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161 default:
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162 {
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163 throw OrthancException(ErrorCode_NotImplemented);
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164 }
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165 }
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166
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167 // TODO Check the validity of the uncompressed MD5?
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168 }
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169
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170
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171 void StorageAccessor::ReadRaw(std::string& content,
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172 const FileInfo& info)
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173 {
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174 MetricsTimer timer(*this, METRICS_READ);
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175 area_.Read(content, info.GetUuid(), info.GetContentType());
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176 }
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177
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178
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179 void StorageAccessor::Remove(const std::string& fileUuid,
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180 FileContentType type)
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181 {
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182 MetricsTimer timer(*this, METRICS_REMOVE);
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183 area_.Remove(fileUuid, type);
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184 }
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185
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186
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187 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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188 void StorageAccessor::SetupSender(BufferHttpSender& sender,
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189 const FileInfo& info,
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190 const std::string& mime)
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191 {
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192 {
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193 MetricsTimer timer(*this, METRICS_READ);
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194 area_.Read(sender.GetBuffer(), info.GetUuid(), info.GetContentType());
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195 }
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196
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197 sender.SetContentType(mime);
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198
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199 const char* extension;
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200 switch (info.GetContentType())
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201 {
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202 case FileContentType_Dicom:
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203 extension = ".dcm";
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204 break;
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205
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206 case FileContentType_DicomAsJson:
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207 extension = ".json";
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208 break;
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209
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210 default:
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211 // Non-standard content type
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212 extension = "";
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213 }
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214
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215 sender.SetContentFilename(info.GetUuid() + std::string(extension));
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216 }
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217 #endif
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218
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219
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220 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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221 void StorageAccessor::AnswerFile(HttpOutput& output,
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222 const FileInfo& info,
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223 const std::string& mime)
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224 {
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225 BufferHttpSender sender;
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226 SetupSender(sender, info, mime);
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227
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228 HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
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229 output.Answer(transcoder);
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230 }
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231 #endif
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232
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233
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234 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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235 void StorageAccessor::AnswerFile(RestApiOutput& output,
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236 const FileInfo& info,
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237 const std::string& mime)
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238 {
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239 BufferHttpSender sender;
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240 SetupSender(sender, info, mime);
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241
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242 HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
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243 output.AnswerStream(transcoder);
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244 }
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245 #endif
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246 }