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annotate OrthancServer/ServerContext.cpp @ 933:aab7e6cac543 mac

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 24 Jun 2014 18:00:26 +0200
parents 84513f2ee1f3
children b3f6fb1130cd
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PrecompiledHeadersServer.h"
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34 #include "ServerContext.h"
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35
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36 #include "../Core/HttpServer/FilesystemHttpSender.h"
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37 #include "../Core/Lua/LuaFunctionCall.h"
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38 #include "FromDcmtkBridge.h"
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39 #include "ServerToolbox.h"
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40 #include "OrthancInitialization.h"
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41
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42 #include <glog/logging.h>
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43 #include <EmbeddedResources.h>
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44 #include <dcmtk/dcmdata/dcfilefo.h>
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45
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46 #define ENABLE_DICOM_CACHE 1
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47
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48 static const char* RECEIVED_INSTANCE_FILTER = "ReceivedInstanceFilter";
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49
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50 static const size_t DICOM_CACHE_SIZE = 2;
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51
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52 /**
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53 * IMPORTANT: We make the assumption that the same instance of
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54 * FileStorage can be accessed from multiple threads. This seems OK
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55 * since the filesystem implements the required locking mechanisms,
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56 * but maybe a read-writer lock on the "FileStorage" could be
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57 * useful. Conversely, "ServerIndex" already implements mutex-based
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58 * locking.
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59 **/
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60
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61 namespace Orthanc
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62 {
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63 ServerContext::ServerContext(const boost::filesystem::path& storagePath,
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64 const boost::filesystem::path& indexPath) :
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65 storage_(storagePath.string()),
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66 index_(*this, indexPath.string()),
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67 accessor_(storage_),
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68 compressionEnabled_(false),
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69 provider_(*this),
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70 dicomCache_(provider_, DICOM_CACHE_SIZE)
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71 {
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72 scu_.SetLocalApplicationEntityTitle(Configuration::GetGlobalStringParameter("DicomAet", "ORTHANC"));
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73 //scu_.SetMillisecondsBeforeClose(1); // The connection is always released
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74
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75 lua_.Execute(Orthanc::EmbeddedResources::LUA_TOOLBOX);
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76 }
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77
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78 void ServerContext::SetCompressionEnabled(bool enabled)
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79 {
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80 if (enabled)
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81 LOG(WARNING) << "Disk compression is enabled";
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82 else
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83 LOG(WARNING) << "Disk compression is disabled";
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84
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85 compressionEnabled_ = enabled;
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86 }
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87
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88 void ServerContext::RemoveFile(const std::string& fileUuid)
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89 {
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90 storage_.Remove(fileUuid);
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91 }
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92
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93 StoreStatus ServerContext::Store(const char* dicomInstance,
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94 size_t dicomSize,
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95 const DicomMap& dicomSummary,
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96 const Json::Value& dicomJson,
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97 const std::string& remoteAet)
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98 {
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99 // Test if the instance must be filtered out
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100 if (lua_.IsExistingFunction(RECEIVED_INSTANCE_FILTER))
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101 {
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102 Json::Value simplified;
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103 SimplifyTags(simplified, dicomJson);
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104
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105 LuaFunctionCall call(lua_, RECEIVED_INSTANCE_FILTER);
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106 call.PushJSON(simplified);
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107 call.PushString(remoteAet);
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108
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109 if (!call.ExecutePredicate())
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110 {
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111 LOG(INFO) << "An incoming instance has been discarded by the filter";
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112 return StoreStatus_FilteredOut;
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113 }
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114 }
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115
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116 if (compressionEnabled_)
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117 {
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118 accessor_.SetCompressionForNextOperations(CompressionType_Zlib);
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119 }
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120 else
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121 {
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122 accessor_.SetCompressionForNextOperations(CompressionType_None);
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123 }
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124
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125 FileInfo dicomInfo = accessor_.Write(dicomInstance, dicomSize, FileContentType_Dicom);
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126 FileInfo jsonInfo = accessor_.Write(dicomJson.toStyledString(), FileContentType_DicomAsJson);
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127
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128 ServerIndex::Attachments attachments;
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129 attachments.push_back(dicomInfo);
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130 attachments.push_back(jsonInfo);
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131
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132 StoreStatus status = index_.Store(dicomSummary, attachments, remoteAet);
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133
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134 if (status != StoreStatus_Success)
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135 {
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136 storage_.Remove(dicomInfo.GetUuid());
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137 storage_.Remove(jsonInfo.GetUuid());
224
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138 }
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139
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140 switch (status)
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141 {
397
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142 case StoreStatus_Success:
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143 LOG(INFO) << "New instance stored";
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144 break;
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145
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146 case StoreStatus_AlreadyStored:
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147 LOG(INFO) << "Already stored";
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148 break;
224
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149
397
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150 case StoreStatus_Failure:
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151 LOG(ERROR) << "Store failure";
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152 break;
224
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153
397
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154 default:
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155 // This should never happen
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156 break;
224
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157 }
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158
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159 return status;
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160 }
226
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161
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162
697
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163 void ServerContext::AnswerDicomFile(RestApiOutput& output,
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164 const std::string& instancePublicId,
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165 FileContentType content)
226
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166 {
232
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167 FileInfo attachment;
236
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168 if (!index_.LookupAttachment(attachment, instancePublicId, content))
232
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169 {
236
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170 throw OrthancException(ErrorCode_InternalError);
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171 }
226
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172
236
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173 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType());
320
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174
236
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175 std::auto_ptr<HttpFileSender> sender(accessor_.ConstructHttpFileSender(attachment.GetUuid()));
320
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176 sender->SetContentType("application/dicom");
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177 sender->SetDownloadFilename(instancePublicId + ".dcm");
236
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178 output.AnswerFile(*sender);
226
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179 }
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180
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181
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182 void ServerContext::ReadJson(Json::Value& result,
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183 const std::string& instancePublicId)
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184 {
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185 std::string s;
697
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186 ReadFile(s, instancePublicId, FileContentType_DicomAsJson);
226
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187
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188 Json::Reader reader;
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189 if (!reader.parse(s, result))
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190 {
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191 throw OrthancException("Corrupted JSON file");
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192 }
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193 }
227
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194
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195
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196 void ServerContext::ReadFile(std::string& result,
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197 const std::string& instancePublicId,
697
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198 FileContentType content,
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199 bool uncompressIfNeeded)
227
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200 {
232
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diff changeset
201 FileInfo attachment;
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202 if (!index_.LookupAttachment(attachment, instancePublicId, content))
227
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203 {
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204 throw OrthancException(ErrorCode_InternalError);
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diff changeset
205 }
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diff changeset
206
697
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207 if (uncompressIfNeeded)
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208 {
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209 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType());
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210 }
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211 else
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212 {
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213 accessor_.SetCompressionForNextOperations(CompressionType_None);
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214 }
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215
232
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diff changeset
216 accessor_.Read(result, attachment.GetUuid());
227
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diff changeset
217 }
285
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diff changeset
218
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diff changeset
219
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diff changeset
220 IDynamicObject* ServerContext::DicomCacheProvider::Provide(const std::string& instancePublicId)
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diff changeset
221 {
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diff changeset
222 std::string content;
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diff changeset
223 context_.ReadFile(content, instancePublicId, FileContentType_Dicom);
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diff changeset
224 return new ParsedDicomFile(content);
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diff changeset
225 }
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diff changeset
226
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diff changeset
227
778
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diff changeset
228 ServerContext::DicomCacheLocker::DicomCacheLocker(ServerContext& that,
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diff changeset
229 const std::string& instancePublicId) :
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diff changeset
230 that_(that)
285
4031f73fe0e4 access to the raw dicom tags
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diff changeset
231 {
291
4d7469f72a0b embedding of dicom dictionaries
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diff changeset
232 #if ENABLE_DICOM_CACHE == 0
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diff changeset
233 static std::auto_ptr<IDynamicObject> p;
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diff changeset
234 p.reset(provider_.Provide(instancePublicId));
778
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diff changeset
235 dicom_ = dynamic_cast<ParsedDicomFile*>(p.get());
291
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diff changeset
236 #else
778
aebf0071020e refactoring of the mutex for the dicom cache
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diff changeset
237 that_.dicomCacheMutex_.lock();
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diff changeset
238 dicom_ = &dynamic_cast<ParsedDicomFile&>(that_.dicomCache_.Access(instancePublicId));
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diff changeset
239 #endif
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diff changeset
240 }
aebf0071020e refactoring of the mutex for the dicom cache
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diff changeset
241
aebf0071020e refactoring of the mutex for the dicom cache
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diff changeset
242
aebf0071020e refactoring of the mutex for the dicom cache
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diff changeset
243 ServerContext::DicomCacheLocker::~DicomCacheLocker()
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244 {
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diff changeset
245 #if ENABLE_DICOM_CACHE == 0
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diff changeset
246 #else
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diff changeset
247 that_.dicomCacheMutex_.unlock();
291
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diff changeset
248 #endif
285
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diff changeset
249 }
304
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diff changeset
250
4eea080e6e7a refactoring
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diff changeset
251
792
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diff changeset
252 static DcmFileFormat& GetDicom(ParsedDicomFile& file)
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diff changeset
253 {
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diff changeset
254 return *reinterpret_cast<DcmFileFormat*>(file.GetDcmtkObject());
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diff changeset
255 }
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diff changeset
256
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diff changeset
257
304
4eea080e6e7a refactoring
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diff changeset
258 StoreStatus ServerContext::Store(std::string& resultPublicId,
791
381f90e2b69d refactoring
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diff changeset
259 ParsedDicomFile& dicomInstance,
304
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diff changeset
260 const char* dicomBuffer,
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diff changeset
261 size_t dicomSize)
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diff changeset
262 {
4eea080e6e7a refactoring
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diff changeset
263 DicomMap dicomSummary;
792
111a1738e11e refactoring
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diff changeset
264 FromDcmtkBridge::Convert(dicomSummary, *GetDicom(dicomInstance).getDataset());
304
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diff changeset
265
730
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diff changeset
266 try
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diff changeset
267 {
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diff changeset
268 DicomInstanceHasher hasher(dicomSummary);
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diff changeset
269 resultPublicId = hasher.HashInstance();
304
4eea080e6e7a refactoring
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diff changeset
270
730
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diff changeset
271 Json::Value dicomJson;
792
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diff changeset
272 FromDcmtkBridge::ToJson(dicomJson, *GetDicom(dicomInstance).getDataset());
304
4eea080e6e7a refactoring
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diff changeset
273
730
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diff changeset
274 StoreStatus status = StoreStatus_Failure;
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diff changeset
275 if (dicomSize > 0)
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276 {
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277 status = Store(dicomBuffer, dicomSize, dicomSummary, dicomJson, "");
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278 }
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279
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280 return status;
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281 }
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282 catch (OrthancException& e)
304
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283 {
730
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284 if (e.GetErrorCode() == ErrorCode_InexistentTag)
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285 {
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286 LogMissingRequiredTag(dicomSummary);
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287 }
304
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288
730
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289 throw e;
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290 }
304
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291 }
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292
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293
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294 StoreStatus ServerContext::Store(std::string& resultPublicId,
791
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295 ParsedDicomFile& dicomInstance)
304
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296 {
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297 std::string buffer;
792
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298 if (!FromDcmtkBridge::SaveToMemoryBuffer(buffer, GetDicom(dicomInstance).getDataset()))
304
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299 {
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300 throw OrthancException(ErrorCode_InternalError);
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301 }
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302
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303 if (buffer.size() == 0)
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304 return Store(resultPublicId, dicomInstance, NULL, 0);
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305 else
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306 return Store(resultPublicId, dicomInstance, &buffer[0], buffer.size());
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307 }
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308
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309
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310 StoreStatus ServerContext::Store(std::string& resultPublicId,
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311 const char* dicomBuffer,
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312 size_t dicomSize)
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313 {
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314 ParsedDicomFile dicom(dicomBuffer, dicomSize);
791
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315 return Store(resultPublicId, dicom, dicomBuffer, dicomSize);
304
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316 }
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317
791
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318
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319 StoreStatus ServerContext::Store(std::string& resultPublicId,
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320 const std::string& dicomContent)
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321 {
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322 if (dicomContent.size() == 0)
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323 {
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324 return Store(resultPublicId, NULL, 0);
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325 }
381f90e2b69d refactoring
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326 else
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327 {
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328 return Store(resultPublicId, &dicomContent[0], dicomContent.size());
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329 }
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330 }
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331
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diff changeset
332
695
c59bc408fb10 parameter to disable the computation of the MD5
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diff changeset
333 void ServerContext::SetStoreMD5ForAttachments(bool storeMD5)
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334 {
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335 LOG(INFO) << "Storing MD5 for attachments: " << (storeMD5 ? "yes" : "no");
c59bc408fb10 parameter to disable the computation of the MD5
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336 accessor_.SetStoreMD5(storeMD5);
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337 }
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diff changeset
338
699
2929e17f8447 add attachments to resources
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diff changeset
339
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diff changeset
340 bool ServerContext::AddAttachment(const std::string& resourceId,
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diff changeset
341 FileContentType attachmentType,
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diff changeset
342 const void* data,
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diff changeset
343 size_t size)
2929e17f8447 add attachments to resources
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diff changeset
344 {
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diff changeset
345 LOG(INFO) << "Adding attachment " << EnumerationToString(attachmentType) << " to resource " << resourceId;
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parents: 697
diff changeset
346
2929e17f8447 add attachments to resources
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diff changeset
347 if (compressionEnabled_)
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
348 {
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diff changeset
349 accessor_.SetCompressionForNextOperations(CompressionType_Zlib);
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diff changeset
350 }
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parents: 697
diff changeset
351 else
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diff changeset
352 {
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diff changeset
353 accessor_.SetCompressionForNextOperations(CompressionType_None);
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354 }
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diff changeset
355
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diff changeset
356 FileInfo info = accessor_.Write(data, size, attachmentType);
2929e17f8447 add attachments to resources
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diff changeset
357 StoreStatus status = index_.AddAttachment(info, resourceId);
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diff changeset
358
2929e17f8447 add attachments to resources
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diff changeset
359 if (status != StoreStatus_Success)
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diff changeset
360 {
2929e17f8447 add attachments to resources
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diff changeset
361 storage_.Remove(info.GetUuid());
2929e17f8447 add attachments to resources
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diff changeset
362 return false;
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
363 }
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
364 else
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
365 {
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
366 return true;
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
367 }
2929e17f8447 add attachments to resources
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parents: 697
diff changeset
368 }
224
4eb0c7ce86c9 refactoring for store
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
369 }