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annotate OrthancFramework/Sources/FileStorage/StorageAccessor.cpp @ 5318:68e15471b408

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added ParsedDicomFile::InjectEmptyPixelData()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 23 Jun 2023 18:01:55 +0200
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children 9c00e832985f
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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23
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24 #include "../PrecompiledHeaders.h"
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25 #include "StorageAccessor.h"
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26 #include "StorageCache.h"
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27
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28 #include "../Logging.h"
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29 #include "../StringMemoryBuffer.h"
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30 #include "../Compatibility.h"
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31 #include "../Compression/ZlibCompressor.h"
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32 #include "../MetricsRegistry.h"
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33 #include "../OrthancException.h"
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34 #include "../Toolbox.h"
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35
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36 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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37 # include "../HttpServer/HttpStreamTranscoder.h"
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38 #endif
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39
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41 static const std::string METRICS_CREATE = "orthanc_storage_create_duration_ms";
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42 static const std::string METRICS_READ = "orthanc_storage_read_duration_ms";
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43 static const std::string METRICS_REMOVE = "orthanc_storage_remove_duration_ms";
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46 namespace Orthanc
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47 {
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48 class StorageAccessor::MetricsTimer : public boost::noncopyable
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49 {
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50 private:
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51 std::unique_ptr<MetricsRegistry::Timer> timer_;
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53 public:
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54 MetricsTimer(StorageAccessor& that,
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55 const std::string& name)
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56 {
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57 if (that.metrics_ != NULL)
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58 {
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59 timer_.reset(new MetricsRegistry::Timer(*that.metrics_, name));
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60 }
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61 }
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62 };
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64
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65 StorageAccessor::StorageAccessor(IStorageArea& area) :
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66 area_(area),
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67 cache_(NULL),
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68 metrics_(NULL)
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69 {
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70 }
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71
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72
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73 StorageAccessor::StorageAccessor(IStorageArea& area,
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74 StorageCache& cache) :
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75 area_(area),
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76 cache_(&cache),
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77 metrics_(NULL)
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78 {
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79 }
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80
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81
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82 StorageAccessor::StorageAccessor(IStorageArea& area,
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83 MetricsRegistry& metrics) :
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84 area_(area),
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85 cache_(NULL),
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86 metrics_(&metrics)
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87 {
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88 }
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89
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90 StorageAccessor::StorageAccessor(IStorageArea& area,
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91 StorageCache& cache,
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92 MetricsRegistry& metrics) :
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93 area_(area),
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94 cache_(&cache),
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95 metrics_(&metrics)
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96 {
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97 }
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98
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99
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100 FileInfo StorageAccessor::Write(const void* data,
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101 size_t size,
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102 FileContentType type,
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103 CompressionType compression,
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104 bool storeMd5)
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105 {
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106 std::string uuid = Toolbox::GenerateUuid();
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107
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108 std::string md5;
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109
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110 if (storeMd5)
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111 {
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112 Toolbox::ComputeMD5(md5, data, size);
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113 }
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114
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115 switch (compression)
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116 {
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117 case CompressionType_None:
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118 {
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119 MetricsTimer timer(*this, METRICS_CREATE);
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120
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121 area_.Create(uuid, data, size, type);
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122
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123 if (cache_ != NULL)
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124 {
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125 cache_->Add(uuid, type, data, size);
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126 }
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127
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128 return FileInfo(uuid, type, size, md5);
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129 }
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130
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131 case CompressionType_ZlibWithSize:
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132 {
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133 ZlibCompressor zlib;
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134
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135 std::string compressed;
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136 zlib.Compress(compressed, data, size);
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137
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138 std::string compressedMD5;
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139
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140 if (storeMd5)
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141 {
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142 Toolbox::ComputeMD5(compressedMD5, compressed);
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143 }
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144
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145 {
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146 MetricsTimer timer(*this, METRICS_CREATE);
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147
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148 if (compressed.size() > 0)
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149 {
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150 area_.Create(uuid, &compressed[0], compressed.size(), type);
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151 }
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152 else
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153 {
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154 area_.Create(uuid, NULL, 0, type);
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155 }
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156 }
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157
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158 if (cache_ != NULL)
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159 {
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160 cache_->Add(uuid, type, data, size); // always add uncompressed data to cache
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161 }
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162
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163 return FileInfo(uuid, type, size, md5,
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164 CompressionType_ZlibWithSize, compressed.size(), compressedMD5);
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165 }
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166
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167 default:
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168 throw OrthancException(ErrorCode_NotImplemented);
221
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169 }
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170 }
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171
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172 FileInfo StorageAccessor::Write(const std::string &data,
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173 FileContentType type,
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174 CompressionType compression,
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175 bool storeMd5)
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176 {
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177 return Write((data.size() == 0 ? NULL : data.c_str()),
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178 data.size(), type, compression, storeMd5);
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179 }
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180
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181
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182 void StorageAccessor::Read(std::string& content,
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183 const FileInfo& info)
221
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184 {
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185 if (cache_ == NULL ||
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186 !cache_->Fetch(content, info.GetUuid(), info.GetContentType()))
221
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187 {
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188 switch (info.GetCompressionType())
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189 {
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190 case CompressionType_None:
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191 {
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192 MetricsTimer timer(*this, METRICS_READ);
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193 std::unique_ptr<IMemoryBuffer> buffer(area_.Read(info.GetUuid(), info.GetContentType()));
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194 buffer->MoveToString(content);
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195
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196 break;
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197 }
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198
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199 case CompressionType_ZlibWithSize:
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200 {
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201 ZlibCompressor zlib;
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202
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203 std::unique_ptr<IMemoryBuffer> compressed;
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204
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205 {
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206 MetricsTimer timer(*this, METRICS_READ);
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207 compressed.reset(area_.Read(info.GetUuid(), info.GetContentType()));
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208 }
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209
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diff changeset
210 zlib.Uncompress(content, compressed->GetData(), compressed->GetSize());
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diff changeset
211
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diff changeset
212 break;
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213 }
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diff changeset
214
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diff changeset
215 default:
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diff changeset
216 {
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217 throw OrthancException(ErrorCode_NotImplemented);
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218 }
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219 }
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diff changeset
220
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diff changeset
221 // always store the uncompressed data in cache
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diff changeset
222 if (cache_ != NULL)
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diff changeset
223 {
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diff changeset
224 cache_->Add(info.GetUuid(), info.GetContentType(), content);
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diff changeset
225 }
221
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226 }
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diff changeset
227
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diff changeset
228 // TODO Check the validity of the uncompressed MD5?
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diff changeset
229 }
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diff changeset
230
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diff changeset
231
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diff changeset
232 void StorageAccessor::ReadRaw(std::string& content,
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diff changeset
233 const FileInfo& info)
1750
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diff changeset
234 {
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diff changeset
235 if (cache_ == NULL || !cache_->Fetch(content, info.GetUuid(), info.GetContentType()))
4900
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diff changeset
236 {
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diff changeset
237 MetricsTimer timer(*this, METRICS_READ);
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diff changeset
238 std::unique_ptr<IMemoryBuffer> buffer(area_.Read(info.GetUuid(), info.GetContentType()));
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diff changeset
239 buffer->MoveToString(content);
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diff changeset
240 }
3175
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diff changeset
241 }
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diff changeset
242
3175
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diff changeset
243
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diff changeset
244 void StorageAccessor::Remove(const std::string& fileUuid,
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diff changeset
245 FileContentType type)
574890d14c92 new metrics: orthanc_store_dicom_duration_ms, orthanc_storage_[create|read|remove]_duration_ms
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diff changeset
246 {
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diff changeset
247 if (cache_ != NULL)
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diff changeset
248 {
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diff changeset
249 cache_->Invalidate(fileUuid, type);
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diff changeset
250 }
4792
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diff changeset
251
434843934307 Added a StorageCache in the StorageAccessor
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diff changeset
252 {
4900
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diff changeset
253 MetricsTimer timer(*this, METRICS_REMOVE);
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diff changeset
254 area_.Remove(fileUuid, type);
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diff changeset
255 }
1750
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256 }
4900
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diff changeset
257
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258
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259 void StorageAccessor::Remove(const FileInfo &info)
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260 {
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261 Remove(info.GetUuid(), info.GetContentType());
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262 }
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263
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264
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265 void StorageAccessor::ReadStartRange(std::string& target,
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266 const std::string& fileUuid,
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267 FileContentType contentType,
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268 uint64_t end /* exclusive */)
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269 {
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270 if (cache_ == NULL || !cache_->FetchStartRange(target, fileUuid, contentType, end))
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271 {
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272 MetricsTimer timer(*this, METRICS_READ);
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273 std::unique_ptr<IMemoryBuffer> buffer(area_.ReadRange(fileUuid, contentType, 0, end));
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274 assert(buffer->GetSize() == end);
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275 buffer->MoveToString(target);
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276
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277 if (cache_ != NULL)
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278 {
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279 cache_->AddStartRange(fileUuid, contentType, target);
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280 }
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281 }
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282 }
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283
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284
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285 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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286 void StorageAccessor::SetupSender(BufferHttpSender& sender,
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287 const FileInfo& info,
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288 const std::string& mime)
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289 {
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290 Read(sender.GetBuffer(), info);
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291
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292 sender.SetContentType(mime);
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293
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294 const char* extension;
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295 switch (info.GetContentType())
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296 {
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297 case FileContentType_Dicom:
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298 case FileContentType_DicomUntilPixelData:
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299 extension = ".dcm";
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300 break;
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301
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302 case FileContentType_DicomAsJson:
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303 extension = ".json";
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304 break;
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305
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306 default:
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307 // Non-standard content type
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308 extension = "";
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309 }
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310
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311 sender.SetContentFilename(info.GetUuid() + std::string(extension));
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312 }
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313 #endif
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314
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315
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316 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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317 void StorageAccessor::AnswerFile(HttpOutput& output,
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318 const FileInfo& info,
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319 MimeType mime)
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320 {
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321 AnswerFile(output, info, EnumerationToString(mime));
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322 }
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323 #endif
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324
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325
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326 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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327 void StorageAccessor::AnswerFile(HttpOutput& output,
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328 const FileInfo& info,
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329 const std::string& mime)
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330 {
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331 BufferHttpSender sender;
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332 SetupSender(sender, info, mime);
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333
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334 HttpStreamTranscoder transcoder(sender, CompressionType_None); // since 1.11.2, the storage accessor only returns uncompressed buffers
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335 output.Answer(transcoder);
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336 }
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337 #endif
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338
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339
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340 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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341 void StorageAccessor::AnswerFile(RestApiOutput& output,
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342 const FileInfo& info,
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343 MimeType mime)
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344 {
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345 AnswerFile(output, info, EnumerationToString(mime));
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346 }
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347 #endif
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348
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349
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350 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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351 void StorageAccessor::AnswerFile(RestApiOutput& output,
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352 const FileInfo& info,
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353 const std::string& mime)
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354 {
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355 BufferHttpSender sender;
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356 SetupSender(sender, info, mime);
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357
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358 HttpStreamTranscoder transcoder(sender, CompressionType_None); // since 1.11.2, the storage accessor only returns uncompressed buffers
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359 output.AnswerStream(transcoder);
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360 }
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361 #endif
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362 }