Mercurial > hg > orthanc
annotate OrthancServer/ServerContext.cpp @ 700:0fe6632864b9
ubuntu 13.10
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 07 Feb 2014 21:34:09 +0100 |
parents | 2929e17f8447 |
children | 309e686b41e7 |
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 | |
33 #include "ServerContext.h" | |
34 | |
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35 #include "../Core/HttpServer/FilesystemHttpSender.h" |
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36 #include "../Core/Lua/LuaFunctionCall.h" |
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37 #include "ServerToolbox.h" |
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38 |
224 | 39 #include <glog/logging.h> |
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40 #include <EmbeddedResources.h> |
224 | 41 |
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42 #define ENABLE_DICOM_CACHE 1 |
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43 |
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44 static const char* RECEIVED_INSTANCE_FILTER = "ReceivedInstanceFilter"; |
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45 |
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46 static const size_t DICOM_CACHE_SIZE = 2; |
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47 |
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48 /** |
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49 * IMPORTANT: We make the assumption that the same instance of |
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50 * FileStorage can be accessed from multiple threads. This seems OK |
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51 * since the filesystem implements the required locking mechanisms, |
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52 * but maybe a read-writer lock on the "FileStorage" could be |
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53 * useful. Conversely, "ServerIndex" already implements mutex-based |
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54 * locking. |
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55 **/ |
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56 |
224 | 57 namespace Orthanc |
58 { | |
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59 ServerContext::ServerContext(const boost::filesystem::path& storagePath, |
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60 const boost::filesystem::path& indexPath) : |
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61 storage_(storagePath.string()), |
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62 index_(*this, indexPath.string()), |
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63 accessor_(storage_), |
656 | 64 compressionEnabled_(false), |
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65 provider_(*this), |
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66 dicomCache_(provider_, DICOM_CACHE_SIZE) |
224 | 67 { |
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68 lua_.Execute(Orthanc::EmbeddedResources::LUA_TOOLBOX); |
224 | 69 } |
70 | |
236 | 71 void ServerContext::SetCompressionEnabled(bool enabled) |
72 { | |
73 if (enabled) | |
74 LOG(WARNING) << "Disk compression is enabled"; | |
75 else | |
76 LOG(WARNING) << "Disk compression is disabled"; | |
77 | |
78 compressionEnabled_ = enabled; | |
79 } | |
80 | |
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81 void ServerContext::RemoveFile(const std::string& fileUuid) |
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82 { |
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83 storage_.Remove(fileUuid); |
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84 } |
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85 |
304 | 86 StoreStatus ServerContext::Store(const char* dicomInstance, |
224 | 87 size_t dicomSize, |
88 const DicomMap& dicomSummary, | |
89 const Json::Value& dicomJson, | |
90 const std::string& remoteAet) | |
91 { | |
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92 // Test if the instance must be filtered out |
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93 if (lua_.IsExistingFunction(RECEIVED_INSTANCE_FILTER)) |
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94 { |
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95 Json::Value simplified; |
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96 SimplifyTags(simplified, dicomJson); |
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97 |
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98 LuaFunctionCall call(lua_, RECEIVED_INSTANCE_FILTER); |
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99 call.PushJSON(simplified); |
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100 call.PushString(remoteAet); |
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101 |
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102 if (!call.ExecutePredicate()) |
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103 { |
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104 LOG(INFO) << "An incoming instance has been discarded by the filter"; |
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105 return StoreStatus_FilteredOut; |
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106 } |
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107 } |
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108 |
236 | 109 if (compressionEnabled_) |
110 { | |
111 accessor_.SetCompressionForNextOperations(CompressionType_Zlib); | |
112 } | |
113 else | |
114 { | |
115 accessor_.SetCompressionForNextOperations(CompressionType_None); | |
116 } | |
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117 |
304 | 118 FileInfo dicomInfo = accessor_.Write(dicomInstance, dicomSize, FileContentType_Dicom); |
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119 FileInfo jsonInfo = accessor_.Write(dicomJson.toStyledString(), FileContentType_DicomAsJson); |
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120 |
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121 ServerIndex::Attachments attachments; |
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122 attachments.push_back(dicomInfo); |
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123 attachments.push_back(jsonInfo); |
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124 |
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125 StoreStatus status = index_.Store(dicomSummary, attachments, remoteAet); |
224 | 126 |
127 if (status != StoreStatus_Success) | |
128 { | |
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129 storage_.Remove(dicomInfo.GetUuid()); |
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130 storage_.Remove(jsonInfo.GetUuid()); |
224 | 131 } |
132 | |
133 switch (status) | |
134 { | |
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135 case StoreStatus_Success: |
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136 LOG(INFO) << "New instance stored"; |
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137 break; |
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138 |
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139 case StoreStatus_AlreadyStored: |
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140 LOG(INFO) << "Already stored"; |
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141 break; |
224 | 142 |
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143 case StoreStatus_Failure: |
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144 LOG(ERROR) << "Store failure"; |
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145 break; |
224 | 146 |
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147 default: |
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148 // This should never happen |
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149 break; |
224 | 150 } |
151 | |
152 return status; | |
153 } | |
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154 |
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155 |
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156 void ServerContext::AnswerDicomFile(RestApiOutput& output, |
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157 const std::string& instancePublicId, |
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158 FileContentType content) |
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159 { |
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160 FileInfo attachment; |
236 | 161 if (!index_.LookupAttachment(attachment, instancePublicId, content)) |
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162 { |
236 | 163 throw OrthancException(ErrorCode_InternalError); |
164 } | |
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165 |
236 | 166 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType()); |
320 | 167 |
236 | 168 std::auto_ptr<HttpFileSender> sender(accessor_.ConstructHttpFileSender(attachment.GetUuid())); |
320 | 169 sender->SetContentType("application/dicom"); |
170 sender->SetDownloadFilename(instancePublicId + ".dcm"); | |
236 | 171 output.AnswerFile(*sender); |
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172 } |
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173 |
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174 |
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175 void ServerContext::ReadJson(Json::Value& result, |
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176 const std::string& instancePublicId) |
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177 { |
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178 std::string s; |
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179 ReadFile(s, instancePublicId, FileContentType_DicomAsJson); |
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180 |
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181 Json::Reader reader; |
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182 if (!reader.parse(s, result)) |
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183 { |
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184 throw OrthancException("Corrupted JSON file"); |
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185 } |
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186 } |
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187 |
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188 |
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189 void ServerContext::ReadFile(std::string& result, |
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190 const std::string& instancePublicId, |
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191 FileContentType content, |
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192 bool uncompressIfNeeded) |
227
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193 { |
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194 FileInfo attachment; |
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195 if (!index_.LookupAttachment(attachment, instancePublicId, content)) |
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196 { |
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197 throw OrthancException(ErrorCode_InternalError); |
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198 } |
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199 |
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200 if (uncompressIfNeeded) |
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201 { |
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202 accessor_.SetCompressionForNextOperations(attachment.GetCompressionType()); |
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203 } |
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204 else |
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205 { |
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206 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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207 } |
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208 |
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209 accessor_.Read(result, attachment.GetUuid()); |
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210 } |
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211 |
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212 |
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213 IDynamicObject* ServerContext::DicomCacheProvider::Provide(const std::string& instancePublicId) |
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214 { |
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215 std::string content; |
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216 context_.ReadFile(content, instancePublicId, FileContentType_Dicom); |
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217 return new ParsedDicomFile(content); |
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218 } |
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219 |
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220 |
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221 ParsedDicomFile& ServerContext::GetDicomFile(const std::string& instancePublicId) |
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222 { |
291
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223 #if ENABLE_DICOM_CACHE == 0 |
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224 static std::auto_ptr<IDynamicObject> p; |
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225 p.reset(provider_.Provide(instancePublicId)); |
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226 return dynamic_cast<ParsedDicomFile&>(*p); |
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227 #else |
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228 return dynamic_cast<ParsedDicomFile&>(dicomCache_.Access(instancePublicId)); |
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229 #endif |
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230 } |
304 | 231 |
232 | |
233 StoreStatus ServerContext::Store(std::string& resultPublicId, | |
234 DcmFileFormat& dicomInstance, | |
235 const char* dicomBuffer, | |
236 size_t dicomSize) | |
237 { | |
238 DicomMap dicomSummary; | |
239 FromDcmtkBridge::Convert(dicomSummary, *dicomInstance.getDataset()); | |
240 | |
241 DicomInstanceHasher hasher(dicomSummary); | |
242 resultPublicId = hasher.HashInstance(); | |
243 | |
244 Json::Value dicomJson; | |
245 FromDcmtkBridge::ToJson(dicomJson, *dicomInstance.getDataset()); | |
246 | |
247 StoreStatus status = StoreStatus_Failure; | |
248 if (dicomSize > 0) | |
249 { | |
250 status = Store(dicomBuffer, dicomSize, dicomSummary, dicomJson, ""); | |
251 } | |
252 | |
253 return status; | |
254 } | |
255 | |
256 | |
257 StoreStatus ServerContext::Store(std::string& resultPublicId, | |
258 DcmFileFormat& dicomInstance) | |
259 { | |
260 std::string buffer; | |
261 if (!FromDcmtkBridge::SaveToMemoryBuffer(buffer, dicomInstance.getDataset())) | |
262 { | |
263 throw OrthancException(ErrorCode_InternalError); | |
264 } | |
265 | |
266 if (buffer.size() == 0) | |
267 return Store(resultPublicId, dicomInstance, NULL, 0); | |
268 else | |
269 return Store(resultPublicId, dicomInstance, &buffer[0], buffer.size()); | |
270 } | |
271 | |
272 | |
273 StoreStatus ServerContext::Store(std::string& resultPublicId, | |
274 const char* dicomBuffer, | |
275 size_t dicomSize) | |
276 { | |
277 ParsedDicomFile dicom(dicomBuffer, dicomSize); | |
278 return Store(resultPublicId, dicom.GetDicom(), dicomBuffer, dicomSize); | |
279 } | |
280 | |
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281 void ServerContext::SetStoreMD5ForAttachments(bool storeMD5) |
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282 { |
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283 LOG(INFO) << "Storing MD5 for attachments: " << (storeMD5 ? "yes" : "no"); |
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284 accessor_.SetStoreMD5(storeMD5); |
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285 } |
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286 |
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287 |
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288 bool ServerContext::AddAttachment(const std::string& resourceId, |
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289 FileContentType attachmentType, |
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290 const void* data, |
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291 size_t size) |
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292 { |
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293 LOG(INFO) << "Adding attachment " << EnumerationToString(attachmentType) << " to resource " << resourceId; |
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294 |
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295 if (compressionEnabled_) |
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296 { |
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297 accessor_.SetCompressionForNextOperations(CompressionType_Zlib); |
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298 } |
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299 else |
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300 { |
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301 accessor_.SetCompressionForNextOperations(CompressionType_None); |
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302 } |
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303 |
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304 FileInfo info = accessor_.Write(data, size, attachmentType); |
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305 StoreStatus status = index_.AddAttachment(info, resourceId); |
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306 |
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307 if (status != StoreStatus_Success) |
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308 { |
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309 storage_.Remove(info.GetUuid()); |
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310 return false; |
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311 } |
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312 else |
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313 { |
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314 return true; |
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315 } |
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316 } |
224 | 317 } |