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annotate Core/FileStorage/StorageAccessor.cpp @ 3530:b26b6ea27648

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 02 Oct 2019 11:13:32 +0200
parents 574890d14c92
children 94f4a18a79cc
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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) 2017-2019 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 "../Compression/ZlibCompressor.h"
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38 #include "../MetricsRegistry.h"
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39 #include "../OrthancException.h"
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40 #include "../Toolbox.h"
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41
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42 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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43 # include "../HttpServer/HttpStreamTranscoder.h"
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44 #endif
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45
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47 static const std::string METRICS_CREATE = "orthanc_storage_create_duration_ms";
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48 static const std::string METRICS_READ = "orthanc_storage_read_duration_ms";
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49 static const std::string METRICS_REMOVE = "orthanc_storage_remove_duration_ms";
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51
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52 namespace Orthanc
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53 {
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54 class StorageAccessor::MetricsTimer : public boost::noncopyable
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55 {
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56 private:
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57 std::auto_ptr<MetricsRegistry::Timer> timer_;
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59 public:
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60 MetricsTimer(StorageAccessor& that,
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61 const std::string& name)
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62 {
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63 if (that.metrics_ != NULL)
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64 {
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65 timer_.reset(new MetricsRegistry::Timer(*that.metrics_, name));
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66 }
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67 }
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68 };
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70
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71 FileInfo StorageAccessor::Write(const void* data,
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72 size_t size,
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73 FileContentType type,
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74 CompressionType compression,
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75 bool storeMd5)
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76 {
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77 std::string uuid = Toolbox::GenerateUuid();
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78
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79 std::string md5;
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80
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81 if (storeMd5)
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82 {
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83 Toolbox::ComputeMD5(md5, data, size);
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84 }
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85
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86 switch (compression)
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87 {
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88 case CompressionType_None:
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89 {
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90 MetricsTimer timer(*this, METRICS_CREATE);
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91
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92 area_.Create(uuid, data, size, type);
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93 return FileInfo(uuid, type, size, md5);
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94 }
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95
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96 case CompressionType_ZlibWithSize:
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97 {
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98 ZlibCompressor zlib;
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99
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100 std::string compressed;
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101 zlib.Compress(compressed, data, size);
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102
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103 std::string compressedMD5;
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104
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105 if (storeMd5)
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106 {
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107 Toolbox::ComputeMD5(compressedMD5, compressed);
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108 }
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109
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110 {
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111 MetricsTimer timer(*this, METRICS_CREATE);
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112
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113 if (compressed.size() > 0)
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114 {
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115 area_.Create(uuid, &compressed[0], compressed.size(), type);
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116 }
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117 else
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118 {
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119 area_.Create(uuid, NULL, 0, type);
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120 }
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121 }
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122
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123 return FileInfo(uuid, type, size, md5,
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124 CompressionType_ZlibWithSize, compressed.size(), compressedMD5);
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125 }
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126
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127 default:
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128 throw OrthancException(ErrorCode_NotImplemented);
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129 }
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130 }
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131
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132
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133 void StorageAccessor::Read(std::string& content,
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134 const FileInfo& info)
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135 {
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136 switch (info.GetCompressionType())
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137 {
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138 case CompressionType_None:
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139 {
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140 MetricsTimer timer(*this, METRICS_READ);
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141 area_.Read(content, info.GetUuid(), info.GetContentType());
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142 break;
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143 }
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144
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145 case CompressionType_ZlibWithSize:
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146 {
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147 ZlibCompressor zlib;
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148
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149 std::string compressed;
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150
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151 {
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152 MetricsTimer timer(*this, METRICS_READ);
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153 area_.Read(compressed, info.GetUuid(), info.GetContentType());
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154 }
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155
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156 IBufferCompressor::Uncompress(content, zlib, compressed);
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157 break;
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158 }
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159
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160 default:
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161 {
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162 throw OrthancException(ErrorCode_NotImplemented);
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163 }
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164 }
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165
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166 // TODO Check the validity of the uncompressed MD5?
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167 }
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168
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169
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170 void StorageAccessor::ReadRaw(std::string& content,
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171 const FileInfo& info)
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172 {
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173 MetricsTimer timer(*this, METRICS_READ);
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174 area_.Read(content, info.GetUuid(), info.GetContentType());
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175 }
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176
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177
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178 void StorageAccessor::Remove(const std::string& fileUuid,
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179 FileContentType type)
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180 {
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181 MetricsTimer timer(*this, METRICS_REMOVE);
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182 area_.Remove(fileUuid, type);
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183 }
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184
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185
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186 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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187 void StorageAccessor::SetupSender(BufferHttpSender& sender,
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188 const FileInfo& info,
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189 const std::string& mime)
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190 {
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191 {
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192 MetricsTimer timer(*this, METRICS_READ);
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193 area_.Read(sender.GetBuffer(), info.GetUuid(), info.GetContentType());
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194 }
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195
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196 sender.SetContentType(mime);
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197
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198 const char* extension;
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199 switch (info.GetContentType())
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200 {
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201 case FileContentType_Dicom:
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202 extension = ".dcm";
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203 break;
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204
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205 case FileContentType_DicomAsJson:
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206 extension = ".json";
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207 break;
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208
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209 default:
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210 // Non-standard content type
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211 extension = "";
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212 }
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213
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214 sender.SetContentFilename(info.GetUuid() + std::string(extension));
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215 }
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216 #endif
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217
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218
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219 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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220 void StorageAccessor::AnswerFile(HttpOutput& output,
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221 const FileInfo& info,
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222 const std::string& mime)
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223 {
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224 BufferHttpSender sender;
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225 SetupSender(sender, info, mime);
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226
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227 HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
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228 output.Answer(transcoder);
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229 }
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230 #endif
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231
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232
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233 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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234 void StorageAccessor::AnswerFile(RestApiOutput& output,
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235 const FileInfo& info,
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236 const std::string& mime)
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237 {
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238 BufferHttpSender sender;
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239 SetupSender(sender, info, mime);
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240
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241 HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
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242 output.AnswerStream(transcoder);
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243 }
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244 #endif
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245 }