Mercurial > hg > orthanc
annotate OrthancServer/ServerContext.cpp @ 1010:160dfe770618 lua-scripting
refactoring
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 09 Jul 2014 17:05:00 +0200 |
parents | 26642cecd36d |
children | 921532f67770 |
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" |
1008 | 48 #include "Scheduler/ModifyInstanceCommand.h" |
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49 #include "Scheduler/StoreScuCommand.h" |
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50 #include "Scheduler/StorePeerCommand.h" |
1010 | 51 #include "OrthancRestApi/OrthancRestApi.h" |
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52 |
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53 |
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54 |
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55 #define ENABLE_DICOM_CACHE 1 |
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56 |
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57 static const char* RECEIVED_INSTANCE_FILTER = "ReceivedInstanceFilter"; |
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58 static const char* ON_STORED_INSTANCE = "OnStoredInstance"; |
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59 |
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60 static const size_t DICOM_CACHE_SIZE = 2; |
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61 |
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62 /** |
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63 * IMPORTANT: We make the assumption that the same instance of |
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64 * FileStorage can be accessed from multiple threads. This seems OK |
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65 * since the filesystem implements the required locking mechanisms, |
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66 * but maybe a read-writer lock on the "FileStorage" could be |
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67 * useful. Conversely, "ServerIndex" already implements mutex-based |
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68 * locking. |
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69 **/ |
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70 |
224 | 71 namespace Orthanc |
72 { | |
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73 ServerContext::ServerContext(const boost::filesystem::path& storagePath, |
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74 const boost::filesystem::path& indexPath) : |
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75 storage_(storagePath.string()), |
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76 index_(*this, indexPath.string()), |
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77 accessor_(storage_), |
656 | 78 compressionEnabled_(false), |
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79 provider_(*this), |
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80 dicomCache_(provider_, DICOM_CACHE_SIZE), |
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81 scheduler_(Configuration::GetGlobalIntegerParameter("LimitJobs", 10)) |
224 | 82 { |
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83 scu_.SetLocalApplicationEntityTitle(Configuration::GetGlobalStringParameter("DicomAet", "ORTHANC")); |
774 | 84 //scu_.SetMillisecondsBeforeClose(1); // The connection is always released |
85 | |
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86 lua_.Execute(Orthanc::EmbeddedResources::LUA_TOOLBOX); |
224 | 87 } |
88 | |
236 | 89 void ServerContext::SetCompressionEnabled(bool enabled) |
90 { | |
91 if (enabled) | |
92 LOG(WARNING) << "Disk compression is enabled"; | |
93 else | |
94 LOG(WARNING) << "Disk compression is disabled"; | |
95 | |
96 compressionEnabled_ = enabled; | |
97 } | |
98 | |
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99 void ServerContext::RemoveFile(const std::string& fileUuid) |
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100 { |
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101 storage_.Remove(fileUuid); |
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102 } |
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103 |
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104 |
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105 bool ServerContext::ApplyReceivedInstanceFilter(const Json::Value& simplified, |
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106 const std::string& remoteAet) |
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107 { |
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108 LuaContextLocker locker(*this); |
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109 |
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110 if (locker.GetLua().IsExistingFunction(RECEIVED_INSTANCE_FILTER)) |
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111 { |
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112 LuaFunctionCall call(locker.GetLua(), RECEIVED_INSTANCE_FILTER); |
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113 call.PushJson(simplified); |
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114 call.PushString(remoteAet); |
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115 |
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116 if (!call.ExecutePredicate()) |
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117 { |
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118 return false; |
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119 } |
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120 } |
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121 |
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122 return true; |
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123 } |
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124 |
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125 |
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126 static IServerCommand* ParseOperation(ServerContext& context, |
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127 const std::string& operation, |
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128 const Json::Value& parameters) |
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129 { |
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130 if (operation == "delete") |
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131 { |
1010 | 132 LOG(INFO) << "Lua script to delete instance " << parameters["Instance"].asString(); |
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133 return new DeleteInstanceCommand(context); |
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134 } |
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135 |
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136 if (operation == "store-scu") |
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137 { |
1010 | 138 std::string modality = parameters["Modality"].asString(); |
139 LOG(INFO) << "Lua script to send instance " << parameters["Instance"].asString() | |
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140 << " to modality " << modality << " using Store-SCU"; |
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141 return new StoreScuCommand(context, Configuration::GetModalityUsingSymbolicName(modality)); |
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142 } |
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143 |
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144 if (operation == "store-peer") |
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145 { |
1010 | 146 std::string peer = parameters["Peer"].asString(); |
147 LOG(INFO) << "Lua script to send instance " << parameters["Instance"].asString() | |
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148 << " to peer " << peer << " using HTTP"; |
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149 |
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150 OrthancPeerParameters parameters; |
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151 Configuration::GetOrthancPeer(parameters, peer); |
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152 return new StorePeerCommand(context, parameters); |
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153 } |
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154 |
1008 | 155 if (operation == "modify") |
156 { | |
1010 | 157 LOG(INFO) << "Lua script to modify instance " << parameters["Instance"].asString(); |
1008 | 158 std::auto_ptr<ModifyInstanceCommand> command(new ModifyInstanceCommand(context)); |
1010 | 159 OrthancRestApi::ParseModifyRequest(command->GetModification(), parameters); |
1008 | 160 return command.release(); |
161 } | |
162 | |
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163 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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164 } |
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165 |
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166 |
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167 void ServerContext::ApplyOnStoredInstance(const std::string& instanceId, |
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168 const Json::Value& simplifiedDicom, |
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169 const Json::Value& metadata) |
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170 { |
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171 LuaContextLocker locker(*this); |
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172 |
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173 if (locker.GetLua().IsExistingFunction(ON_STORED_INSTANCE)) |
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174 { |
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175 locker.GetLua().Execute("_InitializeJob()"); |
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176 |
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177 LuaFunctionCall call(locker.GetLua(), ON_STORED_INSTANCE); |
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178 call.PushString(instanceId); |
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179 call.PushJson(simplifiedDicom); |
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180 call.PushJson(metadata); |
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181 call.Execute(); |
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182 |
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183 Json::Value operations; |
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184 LuaFunctionCall call2(locker.GetLua(), "_AccessJob"); |
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185 call2.ExecuteToJson(operations); |
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186 |
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187 if (operations.type() != Json::arrayValue) |
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188 { |
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189 throw OrthancException(ErrorCode_InternalError); |
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190 } |
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191 |
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192 ServerJob job; |
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193 ServerCommandInstance* previousCommand = NULL; |
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194 |
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195 for (Json::Value::ArrayIndex i = 0; i < operations.size(); ++i) |
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196 { |
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197 if (operations[i].type() != Json::objectValue || |
1010 | 198 !operations[i].isMember("Operation")) |
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199 { |
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200 throw OrthancException(ErrorCode_InternalError); |
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201 } |
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202 |
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203 const Json::Value& parameters = operations[i]; |
1010 | 204 std::string operation = parameters["Operation"].asString(); |
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205 |
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206 ServerCommandInstance& command = job.AddCommand(ParseOperation(*this, operation, operations[i])); |
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207 |
1010 | 208 if (!parameters.isMember("Instance")) |
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209 { |
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210 throw OrthancException(ErrorCode_InternalError); |
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211 } |
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212 |
1010 | 213 std::string instance = parameters["Instance"].asString(); |
214 if (instance.empty()) | |
1008 | 215 { |
1010 | 216 previousCommand->ConnectOutput(command); |
217 } | |
218 else | |
219 { | |
220 command.AddInput(instance); | |
221 } | |
1008 | 222 |
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223 previousCommand = &command; |
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224 } |
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225 |
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226 job.SetDescription(std::string("Lua script: ") + ON_STORED_INSTANCE); |
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227 scheduler_.Submit(job); |
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228 } |
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229 } |
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230 |
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231 |
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232 StoreStatus ServerContext::Store(std::string& resultPublicId, |
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233 DicomInstanceToStore& dicom) |
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234 { |
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235 try |
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236 { |
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237 DicomInstanceHasher hasher(dicom.GetSummary()); |
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238 resultPublicId = hasher.HashInstance(); |
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239 |
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240 Json::Value simplified; |
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241 SimplifyTags(simplified, dicom.GetJson()); |
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242 |
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243 // Test if the instance must be filtered out |
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244 if (!ApplyReceivedInstanceFilter(simplified, dicom.GetRemoteAet())) |
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245 { |
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246 LOG(INFO) << "An incoming instance has been discarded by the filter"; |
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247 return StoreStatus_FilteredOut; |
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248 } |
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249 |
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250 if (compressionEnabled_) |
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251 { |
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252 accessor_.SetCompressionForNextOperations(CompressionType_Zlib); |
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253 } |
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254 else |
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255 { |
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256 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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257 } |
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258 |
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259 FileInfo dicomInfo = accessor_.Write(dicom.GetBufferData(), dicom.GetBufferSize(), FileContentType_Dicom); |
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260 FileInfo jsonInfo = accessor_.Write(dicom.GetJson().toStyledString(), FileContentType_DicomAsJson); |
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261 |
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262 ServerIndex::Attachments attachments; |
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263 attachments.push_back(dicomInfo); |
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264 attachments.push_back(jsonInfo); |
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265 |
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266 std::map<MetadataType, std::string> instanceMetadata; |
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267 StoreStatus status = index_.Store(instanceMetadata, dicom.GetSummary(), attachments, |
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268 dicom.GetRemoteAet(), dicom.GetMetadata()); |
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269 |
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270 if (status != StoreStatus_Success) |
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271 { |
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272 storage_.Remove(dicomInfo.GetUuid()); |
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273 storage_.Remove(jsonInfo.GetUuid()); |
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274 } |
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275 |
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276 switch (status) |
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277 { |
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278 case StoreStatus_Success: |
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279 LOG(INFO) << "New instance stored"; |
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280 break; |
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281 |
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282 case StoreStatus_AlreadyStored: |
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283 LOG(INFO) << "Already stored"; |
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284 break; |
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285 |
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286 case StoreStatus_Failure: |
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287 LOG(ERROR) << "Store failure"; |
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288 break; |
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289 |
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290 default: |
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291 // This should never happen |
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292 break; |
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293 } |
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294 |
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295 if (status == StoreStatus_Success || |
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296 status == StoreStatus_AlreadyStored) |
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297 { |
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298 Json::Value metadata = Json::objectValue; |
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299 for (std::map<MetadataType, std::string>::const_iterator |
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300 it = instanceMetadata.begin(); |
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301 it != instanceMetadata.end(); ++it) |
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302 { |
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303 metadata[EnumerationToString(it->first)] = it->second; |
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304 } |
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305 |
1004
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306 try |
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307 { |
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308 ApplyOnStoredInstance(resultPublicId, simplified, metadata); |
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309 } |
1007
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310 catch (OrthancException& e) |
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311 { |
1010 | 312 LOG(ERROR) << "Error in OnStoredInstance callback (Lua): " << e.What(); |
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313 } |
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314 } |
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315 |
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316 return status; |
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317 } |
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318 catch (OrthancException& e) |
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319 { |
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320 if (e.GetErrorCode() == ErrorCode_InexistentTag) |
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321 { |
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322 LogMissingRequiredTag(dicom.GetSummary()); |
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323 } |
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324 |
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325 throw; |
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326 } |
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327 } |
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328 |
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329 |
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330 |
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331 void ServerContext::AnswerDicomFile(RestApiOutput& output, |
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332 const std::string& instancePublicId, |
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333 FileContentType content) |
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334 { |
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335 FileInfo attachment; |
236 | 336 if (!index_.LookupAttachment(attachment, instancePublicId, content)) |
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337 { |
236 | 338 throw OrthancException(ErrorCode_InternalError); |
339 } | |
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340 |
236 | 341 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType()); |
320 | 342 |
236 | 343 std::auto_ptr<HttpFileSender> sender(accessor_.ConstructHttpFileSender(attachment.GetUuid())); |
320 | 344 sender->SetContentType("application/dicom"); |
345 sender->SetDownloadFilename(instancePublicId + ".dcm"); | |
236 | 346 output.AnswerFile(*sender); |
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347 } |
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348 |
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349 |
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350 void ServerContext::ReadJson(Json::Value& result, |
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351 const std::string& instancePublicId) |
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352 { |
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353 std::string s; |
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354 ReadFile(s, instancePublicId, FileContentType_DicomAsJson); |
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355 |
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356 Json::Reader reader; |
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357 if (!reader.parse(s, result)) |
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358 { |
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359 throw OrthancException("Corrupted JSON file"); |
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360 } |
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361 } |
227
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362 |
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363 |
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364 void ServerContext::ReadFile(std::string& result, |
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365 const std::string& instancePublicId, |
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366 FileContentType content, |
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367 bool uncompressIfNeeded) |
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368 { |
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369 FileInfo attachment; |
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370 if (!index_.LookupAttachment(attachment, instancePublicId, content)) |
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371 { |
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372 throw OrthancException(ErrorCode_InternalError); |
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373 } |
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374 |
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375 if (uncompressIfNeeded) |
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376 { |
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377 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType()); |
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378 } |
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379 else |
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380 { |
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381 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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382 } |
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383 |
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384 accessor_.Read(result, attachment.GetUuid()); |
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385 } |
285
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386 |
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387 |
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388 IDynamicObject* ServerContext::DicomCacheProvider::Provide(const std::string& instancePublicId) |
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389 { |
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390 std::string content; |
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391 context_.ReadFile(content, instancePublicId, FileContentType_Dicom); |
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392 return new ParsedDicomFile(content); |
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393 } |
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394 |
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395 |
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396 ServerContext::DicomCacheLocker::DicomCacheLocker(ServerContext& that, |
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397 const std::string& instancePublicId) : |
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398 that_(that) |
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399 { |
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400 #if ENABLE_DICOM_CACHE == 0 |
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401 static std::auto_ptr<IDynamicObject> p; |
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402 p.reset(provider_.Provide(instancePublicId)); |
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403 dicom_ = dynamic_cast<ParsedDicomFile*>(p.get()); |
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404 #else |
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405 that_.dicomCacheMutex_.lock(); |
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406 dicom_ = &dynamic_cast<ParsedDicomFile&>(that_.dicomCache_.Access(instancePublicId)); |
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407 #endif |
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408 } |
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409 |
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410 |
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411 ServerContext::DicomCacheLocker::~DicomCacheLocker() |
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412 { |
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413 #if ENABLE_DICOM_CACHE == 0 |
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414 #else |
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415 that_.dicomCacheMutex_.unlock(); |
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416 #endif |
285
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417 } |
304 | 418 |
419 | |
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420 void ServerContext::SetStoreMD5ForAttachments(bool storeMD5) |
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421 { |
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422 LOG(INFO) << "Storing MD5 for attachments: " << (storeMD5 ? "yes" : "no"); |
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423 accessor_.SetStoreMD5(storeMD5); |
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424 } |
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425 |
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426 |
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427 bool ServerContext::AddAttachment(const std::string& resourceId, |
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428 FileContentType attachmentType, |
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429 const void* data, |
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430 size_t size) |
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431 { |
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432 LOG(INFO) << "Adding attachment " << EnumerationToString(attachmentType) << " to resource " << resourceId; |
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433 |
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434 if (compressionEnabled_) |
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435 { |
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436 accessor_.SetCompressionForNextOperations(CompressionType_Zlib); |
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437 } |
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438 else |
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439 { |
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440 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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441 } |
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442 |
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443 FileInfo info = accessor_.Write(data, size, attachmentType); |
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444 StoreStatus status = index_.AddAttachment(info, resourceId); |
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445 |
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446 if (status != StoreStatus_Success) |
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447 { |
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448 storage_.Remove(info.GetUuid()); |
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449 return false; |
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450 } |
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451 else |
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452 { |
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453 return true; |
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454 } |
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455 } |
224 | 456 } |