Mercurial > hg > orthanc
annotate OrthancServer/ServerContext.cpp @ 1007:871c49c9b11d lua-scripting
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 08 Jul 2014 17:35:00 +0200 |
parents | 649d47854314 |
children | 187ed107a59f |
rev | line source |
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224 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
689 | 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, |
224 | 4 * Belgium |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
10 * | |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
22 * | |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
32 | |
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33 #include "PrecompiledHeadersServer.h" |
224 | 34 #include "ServerContext.h" |
35 | |
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36 #include "../Core/HttpServer/FilesystemHttpSender.h" |
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37 #include "../Core/Lua/LuaFunctionCall.h" |
795 | 38 #include "FromDcmtkBridge.h" |
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39 #include "ServerToolbox.h" |
771 | 40 #include "OrthancInitialization.h" |
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41 |
224 | 42 #include <glog/logging.h> |
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43 #include <EmbeddedResources.h> |
794 | 44 #include <dcmtk/dcmdata/dcfilefo.h> |
224 | 45 |
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46 |
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47 #include "Scheduler/DeleteInstanceCommand.h" |
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48 #include "Scheduler/StoreScuCommand.h" |
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49 #include "Scheduler/StorePeerCommand.h" |
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50 |
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51 |
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52 |
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53 #define ENABLE_DICOM_CACHE 1 |
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54 |
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55 static const char* RECEIVED_INSTANCE_FILTER = "ReceivedInstanceFilter"; |
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56 static const char* ON_STORED_INSTANCE = "OnStoredInstance"; |
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57 |
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58 static const size_t DICOM_CACHE_SIZE = 2; |
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59 |
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60 /** |
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61 * IMPORTANT: We make the assumption that the same instance of |
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62 * FileStorage can be accessed from multiple threads. This seems OK |
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63 * since the filesystem implements the required locking mechanisms, |
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64 * but maybe a read-writer lock on the "FileStorage" could be |
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65 * useful. Conversely, "ServerIndex" already implements mutex-based |
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66 * locking. |
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67 **/ |
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68 |
224 | 69 namespace Orthanc |
70 { | |
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71 ServerContext::ServerContext(const boost::filesystem::path& storagePath, |
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72 const boost::filesystem::path& indexPath) : |
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73 storage_(storagePath.string()), |
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74 index_(*this, indexPath.string()), |
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75 accessor_(storage_), |
656 | 76 compressionEnabled_(false), |
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77 provider_(*this), |
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78 dicomCache_(provider_, DICOM_CACHE_SIZE), |
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79 scheduler_(Configuration::GetGlobalIntegerParameter("LimitJobs", 10)) |
224 | 80 { |
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81 scu_.SetLocalApplicationEntityTitle(Configuration::GetGlobalStringParameter("DicomAet", "ORTHANC")); |
774 | 82 //scu_.SetMillisecondsBeforeClose(1); // The connection is always released |
83 | |
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84 lua_.Execute(Orthanc::EmbeddedResources::LUA_TOOLBOX); |
224 | 85 } |
86 | |
236 | 87 void ServerContext::SetCompressionEnabled(bool enabled) |
88 { | |
89 if (enabled) | |
90 LOG(WARNING) << "Disk compression is enabled"; | |
91 else | |
92 LOG(WARNING) << "Disk compression is disabled"; | |
93 | |
94 compressionEnabled_ = enabled; | |
95 } | |
96 | |
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97 void ServerContext::RemoveFile(const std::string& fileUuid) |
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98 { |
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99 storage_.Remove(fileUuid); |
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100 } |
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101 |
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102 |
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103 bool ServerContext::ApplyReceivedInstanceFilter(const Json::Value& simplified, |
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104 const std::string& remoteAet) |
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105 { |
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106 LuaContextLocker locker(*this); |
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107 |
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108 if (locker.GetLua().IsExistingFunction(RECEIVED_INSTANCE_FILTER)) |
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109 { |
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110 LuaFunctionCall call(locker.GetLua(), RECEIVED_INSTANCE_FILTER); |
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111 call.PushJson(simplified); |
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112 call.PushString(remoteAet); |
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113 |
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114 if (!call.ExecutePredicate()) |
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115 { |
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116 return false; |
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117 } |
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118 } |
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119 |
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120 return true; |
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121 } |
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122 |
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123 |
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124 static IServerCommand* ParseOperation(ServerContext& context, |
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125 const std::string& operation, |
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126 const Json::Value& parameters) |
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127 { |
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128 if (operation == "delete") |
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129 { |
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130 LOG(INFO) << "Lua script to delete instance " << parameters["instance"].asString(); |
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131 return new DeleteInstanceCommand(context); |
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132 } |
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133 |
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134 if (operation == "store-scu") |
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135 { |
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136 std::string modality = parameters["modality"].asString(); |
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137 LOG(INFO) << "Lua script to send instance " << parameters["instance"].asString() |
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138 << " to modality " << modality << " using Store-SCU"; |
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139 return new StoreScuCommand(context, Configuration::GetModalityUsingSymbolicName(modality)); |
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140 } |
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141 |
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142 if (operation == "store-peer") |
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143 { |
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144 std::string peer = parameters["peer"].asString(); |
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145 LOG(INFO) << "Lua script to send instance " << parameters["instance"].asString() |
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146 << " to peer " << peer << " using HTTP"; |
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147 |
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148 OrthancPeerParameters parameters; |
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149 Configuration::GetOrthancPeer(parameters, peer); |
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150 return new StorePeerCommand(context, parameters); |
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151 } |
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152 |
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153 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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154 } |
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155 |
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156 |
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157 void ServerContext::ApplyOnStoredInstance(const std::string& instanceId, |
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158 const Json::Value& simplifiedDicom, |
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159 const Json::Value& metadata) |
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160 { |
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161 LuaContextLocker locker(*this); |
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162 |
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163 if (locker.GetLua().IsExistingFunction(ON_STORED_INSTANCE)) |
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164 { |
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165 locker.GetLua().Execute("_InitializeJob()"); |
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166 |
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167 LuaFunctionCall call(locker.GetLua(), ON_STORED_INSTANCE); |
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168 call.PushString(instanceId); |
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169 call.PushJson(simplifiedDicom); |
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170 call.PushJson(metadata); |
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171 call.Execute(); |
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172 |
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173 Json::Value operations; |
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174 LuaFunctionCall call2(locker.GetLua(), "_AccessJob"); |
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175 call2.ExecuteToJson(operations); |
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176 |
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177 if (operations.type() != Json::arrayValue) |
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178 { |
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179 throw OrthancException(ErrorCode_InternalError); |
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180 } |
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181 |
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182 ServerJob job; |
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183 ServerCommandInstance* previousCommand = NULL; |
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184 |
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185 for (Json::Value::ArrayIndex i = 0; i < operations.size(); ++i) |
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186 { |
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187 if (operations[i].type() != Json::objectValue || |
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188 !operations[i].isMember("operation")) |
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189 { |
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190 throw OrthancException(ErrorCode_InternalError); |
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191 } |
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192 |
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193 const Json::Value& parameters = operations[i]; |
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194 std::string operation = parameters["operation"].asString(); |
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195 |
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196 ServerCommandInstance& command = job.AddCommand(ParseOperation(*this, operation, operations[i])); |
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197 |
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198 if (parameters.isMember("instance") && |
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199 parameters["instance"].asString() != "") |
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200 { |
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201 command.AddInput(parameters["instance"].asString()); |
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202 } |
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203 else if (previousCommand != NULL) |
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204 { |
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205 previousCommand->ConnectNext(command); |
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206 } |
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207 else |
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208 { |
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209 throw OrthancException(ErrorCode_InternalError); |
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210 } |
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211 |
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212 previousCommand = &command; |
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213 } |
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214 |
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215 job.SetDescription(std::string("Lua script: ") + ON_STORED_INSTANCE); |
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216 scheduler_.Submit(job); |
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217 } |
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218 } |
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219 |
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220 |
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221 StoreStatus ServerContext::Store(std::string& resultPublicId, |
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222 DicomInstanceToStore& dicom) |
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223 { |
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224 try |
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225 { |
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226 DicomInstanceHasher hasher(dicom.GetSummary()); |
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227 resultPublicId = hasher.HashInstance(); |
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228 |
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229 Json::Value simplified; |
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230 SimplifyTags(simplified, dicom.GetJson()); |
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231 |
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232 // Test if the instance must be filtered out |
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233 if (!ApplyReceivedInstanceFilter(simplified, dicom.GetRemoteAet())) |
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234 { |
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235 LOG(INFO) << "An incoming instance has been discarded by the filter"; |
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236 return StoreStatus_FilteredOut; |
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237 } |
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238 |
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239 if (compressionEnabled_) |
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240 { |
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241 accessor_.SetCompressionForNextOperations(CompressionType_Zlib); |
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242 } |
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243 else |
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244 { |
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245 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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246 } |
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247 |
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248 FileInfo dicomInfo = accessor_.Write(dicom.GetBufferData(), dicom.GetBufferSize(), FileContentType_Dicom); |
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249 FileInfo jsonInfo = accessor_.Write(dicom.GetJson().toStyledString(), FileContentType_DicomAsJson); |
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250 |
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251 ServerIndex::Attachments attachments; |
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252 attachments.push_back(dicomInfo); |
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253 attachments.push_back(jsonInfo); |
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254 |
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255 std::map<MetadataType, std::string> instanceMetadata; |
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256 StoreStatus status = index_.Store(instanceMetadata, dicom.GetSummary(), attachments, |
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257 dicom.GetRemoteAet(), dicom.GetMetadata()); |
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258 |
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259 if (status != StoreStatus_Success) |
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260 { |
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261 storage_.Remove(dicomInfo.GetUuid()); |
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262 storage_.Remove(jsonInfo.GetUuid()); |
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263 } |
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264 |
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265 switch (status) |
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266 { |
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267 case StoreStatus_Success: |
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268 LOG(INFO) << "New instance stored"; |
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269 break; |
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270 |
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271 case StoreStatus_AlreadyStored: |
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272 LOG(INFO) << "Already stored"; |
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273 break; |
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274 |
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275 case StoreStatus_Failure: |
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276 LOG(ERROR) << "Store failure"; |
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277 break; |
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278 |
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279 default: |
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280 // This should never happen |
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281 break; |
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282 } |
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283 |
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284 if (status == StoreStatus_Success || |
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285 status == StoreStatus_AlreadyStored) |
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286 { |
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287 Json::Value metadata = Json::objectValue; |
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288 for (std::map<MetadataType, std::string>::const_iterator |
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289 it = instanceMetadata.begin(); |
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290 it != instanceMetadata.end(); ++it) |
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291 { |
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292 metadata[EnumerationToString(it->first)] = it->second; |
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293 } |
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294 |
1004
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295 try |
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296 { |
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297 ApplyOnStoredInstance(resultPublicId, simplified, metadata); |
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298 } |
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299 catch (OrthancException& e) |
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300 { |
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301 LOG(ERROR) << "Lua error in OnStoredInstance: " << e.What(); |
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302 } |
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303 } |
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304 |
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305 return status; |
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306 } |
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307 catch (OrthancException& e) |
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308 { |
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309 if (e.GetErrorCode() == ErrorCode_InexistentTag) |
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310 { |
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311 LogMissingRequiredTag(dicom.GetSummary()); |
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312 } |
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313 |
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314 throw; |
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315 } |
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316 } |
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317 |
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318 |
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319 |
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320 void ServerContext::AnswerDicomFile(RestApiOutput& output, |
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321 const std::string& instancePublicId, |
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322 FileContentType content) |
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323 { |
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324 FileInfo attachment; |
236 | 325 if (!index_.LookupAttachment(attachment, instancePublicId, content)) |
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326 { |
236 | 327 throw OrthancException(ErrorCode_InternalError); |
328 } | |
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329 |
236 | 330 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType()); |
320 | 331 |
236 | 332 std::auto_ptr<HttpFileSender> sender(accessor_.ConstructHttpFileSender(attachment.GetUuid())); |
320 | 333 sender->SetContentType("application/dicom"); |
334 sender->SetDownloadFilename(instancePublicId + ".dcm"); | |
236 | 335 output.AnswerFile(*sender); |
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336 } |
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337 |
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338 |
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339 void ServerContext::ReadJson(Json::Value& result, |
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340 const std::string& instancePublicId) |
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341 { |
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342 std::string s; |
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343 ReadFile(s, instancePublicId, FileContentType_DicomAsJson); |
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344 |
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345 Json::Reader reader; |
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346 if (!reader.parse(s, result)) |
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347 { |
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348 throw OrthancException("Corrupted JSON file"); |
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349 } |
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350 } |
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351 |
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352 |
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353 void ServerContext::ReadFile(std::string& result, |
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354 const std::string& instancePublicId, |
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355 FileContentType content, |
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356 bool uncompressIfNeeded) |
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357 { |
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358 FileInfo attachment; |
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359 if (!index_.LookupAttachment(attachment, instancePublicId, content)) |
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360 { |
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361 throw OrthancException(ErrorCode_InternalError); |
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362 } |
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363 |
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364 if (uncompressIfNeeded) |
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365 { |
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366 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType()); |
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367 } |
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368 else |
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369 { |
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370 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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371 } |
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372 |
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373 accessor_.Read(result, attachment.GetUuid()); |
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374 } |
285
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375 |
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376 |
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377 IDynamicObject* ServerContext::DicomCacheProvider::Provide(const std::string& instancePublicId) |
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378 { |
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379 std::string content; |
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380 context_.ReadFile(content, instancePublicId, FileContentType_Dicom); |
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381 return new ParsedDicomFile(content); |
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382 } |
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383 |
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384 |
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385 ServerContext::DicomCacheLocker::DicomCacheLocker(ServerContext& that, |
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386 const std::string& instancePublicId) : |
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387 that_(that) |
285
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388 { |
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389 #if ENABLE_DICOM_CACHE == 0 |
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390 static std::auto_ptr<IDynamicObject> p; |
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391 p.reset(provider_.Provide(instancePublicId)); |
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392 dicom_ = dynamic_cast<ParsedDicomFile*>(p.get()); |
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393 #else |
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394 that_.dicomCacheMutex_.lock(); |
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395 dicom_ = &dynamic_cast<ParsedDicomFile&>(that_.dicomCache_.Access(instancePublicId)); |
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396 #endif |
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397 } |
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398 |
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399 |
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400 ServerContext::DicomCacheLocker::~DicomCacheLocker() |
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401 { |
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402 #if ENABLE_DICOM_CACHE == 0 |
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403 #else |
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404 that_.dicomCacheMutex_.unlock(); |
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405 #endif |
285
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406 } |
304 | 407 |
408 | |
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409 void ServerContext::SetStoreMD5ForAttachments(bool storeMD5) |
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410 { |
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411 LOG(INFO) << "Storing MD5 for attachments: " << (storeMD5 ? "yes" : "no"); |
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412 accessor_.SetStoreMD5(storeMD5); |
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413 } |
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414 |
699
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415 |
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416 bool ServerContext::AddAttachment(const std::string& resourceId, |
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417 FileContentType attachmentType, |
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418 const void* data, |
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419 size_t size) |
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420 { |
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421 LOG(INFO) << "Adding attachment " << EnumerationToString(attachmentType) << " to resource " << resourceId; |
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422 |
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423 if (compressionEnabled_) |
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424 { |
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425 accessor_.SetCompressionForNextOperations(CompressionType_Zlib); |
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426 } |
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427 else |
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428 { |
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429 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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430 } |
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431 |
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432 FileInfo info = accessor_.Write(data, size, attachmentType); |
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433 StoreStatus status = index_.AddAttachment(info, resourceId); |
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434 |
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435 if (status != StoreStatus_Success) |
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436 { |
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437 storage_.Remove(info.GetUuid()); |
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438 return false; |
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439 } |
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440 else |
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441 { |
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442 return true; |
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443 } |
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444 } |
224 | 445 } |