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annotate OrthancFramework/Sources/FileStorage/StorageAccessor.cpp @ 4870:43e613a7756b

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:15:42 +0100
parents 7053502fbf97
children ea5f1c6ed07e
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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) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 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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45
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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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63
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64
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65 StorageAccessor::StorageAccessor(IStorageArea &area, StorageCache& cache) :
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66 area_(area),
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67 cache_(cache),
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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 StorageAccessor::StorageAccessor(IStorageArea &area,
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73 StorageCache& cache,
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74 MetricsRegistry &metrics) :
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75 area_(area),
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76 cache_(cache),
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77 metrics_(&metrics)
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78 {
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79 }
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81
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82 FileInfo StorageAccessor::Write(const void* data,
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83 size_t size,
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84 FileContentType type,
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85 CompressionType compression,
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86 bool storeMd5)
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87 {
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88 std::string uuid = Toolbox::GenerateUuid();
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89
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90 std::string md5;
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91
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92 if (storeMd5)
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93 {
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94 Toolbox::ComputeMD5(md5, data, size);
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95 }
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96
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97 switch (compression)
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98 {
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99 case CompressionType_None:
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100 {
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101 MetricsTimer timer(*this, METRICS_CREATE);
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102
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103 area_.Create(uuid, data, size, type);
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104 cache_.Add(uuid, type, data, size);
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105
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106 return FileInfo(uuid, type, size, md5);
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107 }
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108
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109 case CompressionType_ZlibWithSize:
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110 {
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111 ZlibCompressor zlib;
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112
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113 std::string compressed;
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114 zlib.Compress(compressed, data, size);
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115
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116 std::string compressedMD5;
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117
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118 if (storeMd5)
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119 {
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120 Toolbox::ComputeMD5(compressedMD5, compressed);
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121 }
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122
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123 {
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124 MetricsTimer timer(*this, METRICS_CREATE);
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125
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126 if (compressed.size() > 0)
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127 {
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128 area_.Create(uuid, &compressed[0], compressed.size(), type);
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129 }
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130 else
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131 {
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132 area_.Create(uuid, NULL, 0, type);
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133 }
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134 }
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135
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136 cache_.Add(uuid, type, data, size);
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137 return FileInfo(uuid, type, size, md5,
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138 CompressionType_ZlibWithSize, compressed.size(), compressedMD5);
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139 }
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140
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141 default:
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142 throw OrthancException(ErrorCode_NotImplemented);
221
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143 }
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144 }
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145
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146 FileInfo StorageAccessor::Write(const std::string &data,
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147 FileContentType type,
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148 CompressionType compression,
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149 bool storeMd5)
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150 {
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151 return Write((data.size() == 0 ? NULL : data.c_str()),
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152 data.size(), type, compression, storeMd5);
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153 }
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154
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155
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156 void StorageAccessor::Read(std::string& content,
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157 const FileInfo& info)
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158 {
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159 if (cache_.Fetch(content, info.GetUuid(), info.GetContentType()))
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160 {
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161 LOG(INFO) << "Read attachment \"" << info.GetUuid() << "\" "
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162 << "content type from cache";
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163 return;
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164 }
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165
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166 switch (info.GetCompressionType())
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167 {
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168 case CompressionType_None:
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169 {
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170 MetricsTimer timer(*this, METRICS_READ);
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171
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172 std::unique_ptr<IMemoryBuffer> buffer(area_.Read(info.GetUuid(), info.GetContentType()));
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173 buffer->MoveToString(content);
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174
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175 cache_.Add(info.GetUuid(), info.GetContentType(), content);
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176 break;
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177 }
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178
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179 case CompressionType_ZlibWithSize:
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180 {
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181 ZlibCompressor zlib;
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182
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183 std::unique_ptr<IMemoryBuffer> compressed;
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184
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185 {
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186 MetricsTimer timer(*this, METRICS_READ);
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187 compressed.reset(area_.Read(info.GetUuid(), info.GetContentType()));
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188 }
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189
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190 zlib.Uncompress(content, compressed->GetData(), compressed->GetSize());
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191
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192 cache_.Add(info.GetUuid(), info.GetContentType(), content);
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193 break;
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194 }
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195
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196 default:
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197 {
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198 throw OrthancException(ErrorCode_NotImplemented);
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199 }
221
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200 }
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201
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202 // TODO Check the validity of the uncompressed MD5?
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203 }
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204
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205
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206 void StorageAccessor::ReadRaw(std::string& content,
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207 const FileInfo& info)
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208 {
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209 MetricsTimer timer(*this, METRICS_READ);
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210
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211 std::unique_ptr<IMemoryBuffer> buffer(area_.Read(info.GetUuid(), info.GetContentType()));
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212 buffer->MoveToString(content);
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213 }
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214
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215
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216 void StorageAccessor::Remove(const std::string& fileUuid,
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217 FileContentType type)
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218 {
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diff changeset
219 MetricsTimer timer(*this, METRICS_REMOVE);
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220 area_.Remove(fileUuid, type);
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221
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222 cache_.Invalidate(fileUuid, type);
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223
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224 // in ReadStartRange, we might have cached only the start of the file -> try to remove it
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diff changeset
225 if (type == FileContentType_Dicom)
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226 {
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227 cache_.Invalidate(fileUuid, FileContentType_DicomUntilPixelData);
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228 }
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229 }
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230
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231 void StorageAccessor::Remove(const FileInfo &info)
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232 {
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233 Remove(info.GetUuid(), info.GetContentType());
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234 }
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235
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236 IMemoryBuffer* StorageAccessor::ReadStartRange(const std::string& fileUuid,
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237 FileContentType contentType,
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238 uint64_t end /* exclusive */,
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diff changeset
239 FileContentType startFileContentType)
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240 {
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diff changeset
241 std::string content;
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diff changeset
242 if (cache_.Fetch(content, fileUuid, contentType))
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diff changeset
243 {
434843934307 Added a StorageCache in the StorageAccessor
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diff changeset
244 LOG(INFO) << "Read attachment \"" << fileUuid << "\" "
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diff changeset
245 << "(range from " << 0 << " to " << end << ") from cache";
434843934307 Added a StorageCache in the StorageAccessor
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diff changeset
246
434843934307 Added a StorageCache in the StorageAccessor
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diff changeset
247 return StringMemoryBuffer::CreateFromCopy(content, 0, end);
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248 }
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249
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diff changeset
250 if (cache_.Fetch(content, fileUuid, startFileContentType))
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diff changeset
251 {
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diff changeset
252 LOG(INFO) << "Read attachment \"" << fileUuid << "\" "
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253 << "(range from " << 0 << " to " << end << ") from cache";
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254
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255 assert(content.size() == end);
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256 return StringMemoryBuffer::CreateFromCopy(content);
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257 }
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258
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259 std::unique_ptr<IMemoryBuffer> buffer(area_.ReadRange(fileUuid, contentType, 0, end));
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260
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261 // we've read only the first part of the file -> add an entry in the cache
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262 // note the uuid is still the uuid of the full file but the type is the type of the start of the file !
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263 assert(buffer->GetSize() == end);
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264 cache_.Add(fileUuid, startFileContentType, buffer->GetData(), buffer->GetSize());
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265 return buffer.release();
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266 }
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267
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268
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269 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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270 void StorageAccessor::SetupSender(BufferHttpSender& sender,
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271 const FileInfo& info,
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272 const std::string& mime)
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273 {
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274 if (cache_.Fetch(sender.GetBuffer(), info.GetUuid(), info.GetContentType()))
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275 {
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276 LOG(INFO) << "Read attachment \"" << info.GetUuid() << "\" "
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277 << "content type from cache";
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278 }
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279 else
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280 {
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281 MetricsTimer timer(*this, METRICS_READ);
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282 std::unique_ptr<IMemoryBuffer> buffer(area_.Read(info.GetUuid(), info.GetContentType()));
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283 buffer->MoveToString(sender.GetBuffer());
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284
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285 cache_.Add(info.GetUuid(), info.GetContentType(), sender.GetBuffer());
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286 }
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287
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288 sender.SetContentType(mime);
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289
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290 const char* extension;
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291 switch (info.GetContentType())
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292 {
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293 case FileContentType_Dicom:
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294 case FileContentType_DicomUntilPixelData:
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295 extension = ".dcm";
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296 break;
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297
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298 case FileContentType_DicomAsJson:
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299 extension = ".json";
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300 break;
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301
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302 default:
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303 // Non-standard content type
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304 extension = "";
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305 }
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306
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307 sender.SetContentFilename(info.GetUuid() + std::string(extension));
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308 }
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309 #endif
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310
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311
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312 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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313 void StorageAccessor::AnswerFile(HttpOutput& output,
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314 const FileInfo& info,
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315 MimeType mime)
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316 {
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317 AnswerFile(output, info, EnumerationToString(mime));
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318 }
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319 #endif
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320
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321
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322 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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323 void StorageAccessor::AnswerFile(HttpOutput& output,
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324 const FileInfo& info,
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325 const std::string& mime)
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326 {
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327 BufferHttpSender sender;
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328 SetupSender(sender, info, mime);
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329
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330 HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
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331 output.Answer(transcoder);
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332 }
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333 #endif
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334
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335
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336 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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337 void StorageAccessor::AnswerFile(RestApiOutput& output,
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338 const FileInfo& info,
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339 MimeType mime)
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340 {
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341 AnswerFile(output, info, EnumerationToString(mime));
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342 }
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343 #endif
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344
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345
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346 #if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
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347 void StorageAccessor::AnswerFile(RestApiOutput& output,
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348 const FileInfo& info,
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349 const std::string& mime)
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350 {
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351 BufferHttpSender sender;
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352 SetupSender(sender, info, mime);
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353
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354 HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
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355 output.AnswerStream(transcoder);
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356 }
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357 #endif
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358 }