Mercurial > hg > orthanc
annotate OrthancServer/Plugins/Samples/DelayedDeletion/Plugin.cpp @ 5853:4d932683049d get-scu tip
very first implementation of C-Get SCU
| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Tue, 29 Oct 2024 17:25:49 +0100 |
| parents | f7adfb22e20e |
| children |
| rev | line source |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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8 * |
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9 * This program is free software: you can redistribute it and/or |
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10 * modify it under the terms of the GNU General Public License as |
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11 * published by the Free Software Foundation, either version 3 of the |
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12 * License, or (at your option) any later version. |
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13 * |
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14 * This program is distributed in the hope that it will be useful, but |
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 * General Public License for more details. |
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18 * |
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19 * You should have received a copy of the GNU General Public License |
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20 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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21 **/ |
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22 |
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23 |
| 5024 | 24 #include "PendingDeletionsDatabase.h" |
| 25 | |
| 26 #include "../../../../OrthancFramework/Sources/FileStorage/FilesystemStorage.h" | |
| 27 #include "../../../../OrthancFramework/Sources/Logging.h" | |
| 28 #include "../../../../OrthancFramework/Sources/MultiThreading/SharedMessageQueue.h" | |
| 5265 | 29 #include "../Common/OrthancPluginCppWrapper.h" |
| 5024 | 30 |
| 31 #include <boost/thread.hpp> | |
| 32 | |
| 33 | |
| 34 class PendingDeletion : public Orthanc::IDynamicObject | |
| 35 { | |
| 36 private: | |
| 37 Orthanc::FileContentType type_; | |
| 38 std::string uuid_; | |
| 39 | |
| 40 public: | |
| 41 PendingDeletion(Orthanc::FileContentType type, | |
| 42 const std::string& uuid) : | |
| 43 type_(type), | |
| 44 uuid_(uuid) | |
| 45 { | |
| 46 } | |
| 47 | |
| 48 Orthanc::FileContentType GetType() const | |
| 49 { | |
| 50 return type_; | |
| 51 } | |
| 52 | |
| 53 const std::string& GetUuid() const | |
| 54 { | |
| 55 return uuid_; | |
| 56 } | |
| 57 }; | |
| 58 | |
| 59 | |
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60 static const char* DELAYED_DELETION = "DelayedDeletion"; |
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61 static bool continue_ = false; |
| 5024 | 62 static Orthanc::SharedMessageQueue queue_; |
| 63 static std::unique_ptr<Orthanc::FilesystemStorage> storage_; | |
| 64 static std::unique_ptr<PendingDeletionsDatabase> db_; | |
| 65 static std::unique_ptr<boost::thread> deletionThread_; | |
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66 static const char* databaseServerIdentifier_ = NULL; |
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67 static unsigned int throttleDelayMs_ = 0; |
| 5024 | 68 |
| 69 | |
| 5265 | 70 static Orthanc::FileContentType Convert(OrthancPluginContentType type) |
| 71 { | |
| 72 switch (type) | |
| 73 { | |
| 74 case OrthancPluginContentType_Dicom: | |
| 75 return Orthanc::FileContentType_Dicom; | |
| 76 | |
| 77 case OrthancPluginContentType_DicomAsJson: | |
| 78 return Orthanc::FileContentType_DicomAsJson; | |
| 79 | |
| 80 case OrthancPluginContentType_DicomUntilPixelData: | |
| 81 return Orthanc::FileContentType_DicomUntilPixelData; | |
| 82 | |
| 83 default: | |
| 84 return Orthanc::FileContentType_Unknown; | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 | |
| 5024 | 89 static OrthancPluginErrorCode StorageCreate(const char* uuid, |
| 90 const void* content, | |
| 91 int64_t size, | |
| 92 OrthancPluginContentType type) | |
| 93 { | |
| 94 try | |
| 95 { | |
| 5265 | 96 storage_->Create(uuid, content, size, Convert(type)); |
| 5024 | 97 return OrthancPluginErrorCode_Success; |
| 98 } | |
| 99 catch (Orthanc::OrthancException& e) | |
| 100 { | |
| 101 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode()); | |
| 102 } | |
| 103 catch (...) | |
| 104 { | |
| 105 return OrthancPluginErrorCode_StorageAreaPlugin; | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 | |
| 110 static OrthancPluginErrorCode StorageReadWhole(OrthancPluginMemoryBuffer64* target, // Memory buffer where to store the content of the file. It must be allocated by the plugin using OrthancPluginCreateMemoryBuffer64(). The core of Orthanc will free it. | |
| 111 const char* uuid, | |
| 112 OrthancPluginContentType type) | |
| 113 { | |
| 114 try | |
| 115 { | |
| 5265 | 116 std::unique_ptr<Orthanc::IMemoryBuffer> buffer(storage_->Read(uuid, Convert(type))); |
| 5024 | 117 |
| 118 // copy from a buffer allocated on plugin's heap into a buffer allocated on core's heap | |
| 119 if (OrthancPluginCreateMemoryBuffer64(OrthancPlugins::GetGlobalContext(), target, buffer->GetSize()) != OrthancPluginErrorCode_Success) | |
| 120 { | |
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121 LOG(ERROR) << "Delayed deletion plugin: error while reading object " << uuid << ", cannot allocate memory of size " << buffer->GetSize() << " bytes"; |
| 5024 | 122 return OrthancPluginErrorCode_StorageAreaPlugin; |
| 123 } | |
| 124 | |
| 125 memcpy(target->data, buffer->GetData(), buffer->GetSize()); | |
| 126 | |
| 127 return OrthancPluginErrorCode_Success; | |
| 128 } | |
| 129 catch (Orthanc::OrthancException& e) | |
| 130 { | |
| 131 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode()); | |
| 132 } | |
| 133 catch (...) | |
| 134 { | |
| 135 return OrthancPluginErrorCode_StorageAreaPlugin; | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 | |
| 140 static OrthancPluginErrorCode StorageReadRange(OrthancPluginMemoryBuffer64* target, // Memory buffer where to store the content of the range. The memory buffer is allocated and freed by Orthanc. The length of the range of interest corresponds to the size of this buffer. | |
| 141 const char* uuid, | |
| 142 OrthancPluginContentType type, | |
| 143 uint64_t rangeStart) | |
| 144 { | |
| 145 try | |
| 146 { | |
| 5265 | 147 std::unique_ptr<Orthanc::IMemoryBuffer> buffer(storage_->ReadRange(uuid, Convert(type), rangeStart, rangeStart + target->size)); |
| 5024 | 148 |
| 149 assert(buffer->GetSize() == target->size); | |
| 150 | |
| 151 memcpy(target->data, buffer->GetData(), buffer->GetSize()); | |
| 152 | |
| 153 return OrthancPluginErrorCode_Success; | |
| 154 } | |
| 155 catch (Orthanc::OrthancException& e) | |
| 156 { | |
| 157 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode()); | |
| 158 } | |
| 159 catch (...) | |
| 160 { | |
| 161 return OrthancPluginErrorCode_StorageAreaPlugin; | |
| 162 } | |
| 163 | |
| 164 return OrthancPluginErrorCode_Success; | |
| 165 } | |
| 166 | |
| 167 | |
| 168 static OrthancPluginErrorCode StorageRemove(const char* uuid, | |
| 169 OrthancPluginContentType type) | |
| 170 { | |
| 171 try | |
| 172 { | |
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173 LOG(INFO) << "DelayedDeletion - Scheduling delayed deletion of " << uuid; |
| 5265 | 174 db_->Enqueue(uuid, Convert(type)); |
| 5024 | 175 |
| 176 return OrthancPluginErrorCode_Success; | |
| 177 } | |
| 178 catch (Orthanc::OrthancException& e) | |
| 179 { | |
| 180 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode()); | |
| 181 } | |
| 182 catch (...) | |
| 183 { | |
| 184 return OrthancPluginErrorCode_StorageAreaPlugin; | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 static void DeletionWorker() | |
| 189 { | |
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190 OrthancPluginSetCurrentThreadName(OrthancPlugins::GetGlobalContext(), "DELETION"); |
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191 |
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192 static const unsigned int GRANULARITY = 100; // In milliseconds |
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193 |
| 5024 | 194 while (continue_) |
| 195 { | |
| 196 std::string uuid; | |
| 197 Orthanc::FileContentType type = Orthanc::FileContentType_Dicom; // Dummy initialization | |
| 198 | |
| 199 bool hasDeleted = false; | |
| 200 | |
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201 while (continue_ && db_->Dequeue(uuid, type)) |
| 5024 | 202 { |
| 203 if (!hasDeleted) | |
| 204 { | |
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205 LOG(INFO) << "DelayedDeletion - Starting to process the pending deletions"; |
| 5024 | 206 } |
| 207 | |
| 208 hasDeleted = true; | |
| 209 | |
| 210 try | |
| 211 { | |
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212 LOG(INFO) << "DelayedDeletion - Asynchronous removal of file: " << uuid; |
| 5024 | 213 storage_->Remove(uuid, type); |
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214 |
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215 if (throttleDelayMs_ > 0) |
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216 { |
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217 boost::this_thread::sleep(boost::posix_time::milliseconds(throttleDelayMs_)); |
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218 } |
| 5024 | 219 } |
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220 catch (Orthanc::OrthancException& ex) |
| 5024 | 221 { |
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222 LOG(ERROR) << "DelayedDeletion - Cannot remove file: " << uuid << " " << ex.What(); |
| 5024 | 223 } |
| 224 } | |
| 225 | |
| 226 if (hasDeleted) | |
| 227 { | |
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228 LOG(INFO) << "DelayedDeletion - All the pending deletions have been completed"; |
| 5024 | 229 } |
| 230 | |
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231 boost::this_thread::sleep(boost::posix_time::milliseconds(GRANULARITY)); |
| 5024 | 232 } |
| 233 } | |
| 234 | |
| 235 | |
| 236 OrthancPluginErrorCode OnChangeCallback(OrthancPluginChangeType changeType, | |
| 237 OrthancPluginResourceType resourceType, | |
| 238 const char* resourceId) | |
| 239 { | |
| 240 switch (changeType) | |
| 241 { | |
| 242 case OrthancPluginChangeType_OrthancStarted: | |
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243 assert(deletionThread_.get() == NULL); |
| 5024 | 244 |
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245 LOG(WARNING) << "DelayedDeletion - Starting the deletion thread"; |
| 5024 | 246 continue_ = true; |
| 247 deletionThread_.reset(new boost::thread(DeletionWorker)); | |
| 248 break; | |
| 249 | |
| 250 case OrthancPluginChangeType_OrthancStopped: | |
| 251 | |
| 252 if (deletionThread_.get() != NULL) | |
| 253 { | |
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254 LOG(WARNING) << "DelayedDeletion - Stopping the deletion thread"; |
| 5024 | 255 continue_ = false; |
| 256 if (deletionThread_->joinable()) | |
| 257 { | |
| 258 deletionThread_->join(); | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 break; | |
| 263 | |
| 264 default: | |
| 265 break; | |
| 266 } | |
| 267 | |
| 268 return OrthancPluginErrorCode_Success; | |
| 269 } | |
| 270 | |
| 271 | |
| 272 | |
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273 void GetPluginStatus(OrthancPluginRestOutput* output, |
| 5024 | 274 const char* url, |
| 275 const OrthancPluginHttpRequest* request) | |
| 276 { | |
| 277 | |
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278 Json::Value status; |
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279 status["FilesPendingDeletion"] = db_->GetSize(); |
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280 status["DatabaseServerIdentifier"] = databaseServerIdentifier_; |
| 5024 | 281 |
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282 std::string s = status.toStyledString(); |
| 5024 | 283 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, s.c_str(), |
| 284 s.size(), "application/json"); | |
| 285 } | |
| 286 | |
| 287 | |
| 288 | |
| 289 extern "C" | |
| 290 { | |
| 291 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context) | |
| 292 { | |
| 5563 | 293 OrthancPlugins::SetGlobalContext(context, ORTHANC_PLUGIN_NAME); |
| 294 Orthanc::Logging::InitializePluginContext(context, ORTHANC_PLUGIN_NAME); | |
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295 |
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296 |
| 5024 | 297 /* Check the version of the Orthanc core */ |
| 298 if (OrthancPluginCheckVersion(context) == 0) | |
| 299 { | |
| 300 char info[1024]; | |
| 301 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
| 302 context->orthancVersion, | |
| 303 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
| 304 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
| 305 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
| 306 OrthancPluginLogError(context, info); | |
| 307 return -1; | |
| 308 } | |
| 309 | |
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310 OrthancPluginSetDescription2(context, ORTHANC_PLUGIN_NAME, "Plugin removing files from storage asynchronously."); |
| 5024 | 311 |
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312 OrthancPlugins::OrthancConfiguration orthancConfig; |
| 5024 | 313 |
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314 if (!orthancConfig.IsSection(DELAYED_DELETION)) |
| 5024 | 315 { |
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316 LOG(WARNING) << "DelayedDeletion - plugin is loaded but not enabled (no \"DelayedDeletion\" section found in configuration)"; |
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317 return 0; |
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318 } |
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319 |
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320 OrthancPlugins::OrthancConfiguration delayedDeletionConfig; |
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321 orthancConfig.GetSection(delayedDeletionConfig, DELAYED_DELETION); |
| 5024 | 322 |
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323 if (delayedDeletionConfig.GetBooleanValue("Enable", true)) |
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324 { |
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325 databaseServerIdentifier_ = OrthancPluginGetDatabaseServerIdentifier(context); |
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326 throttleDelayMs_ = delayedDeletionConfig.GetUnsignedIntegerValue("ThrottleDelayMs", 0); // delay in ms |
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327 |
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328 |
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329 std::string pathStorage = orthancConfig.GetStringValue("StorageDirectory", "OrthancStorage"); |
| 5024 | 330 LOG(WARNING) << "DelayedDeletion - Path to the storage area: " << pathStorage; |
| 331 | |
| 332 storage_.reset(new Orthanc::FilesystemStorage(pathStorage)); | |
| 333 | |
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334 boost::filesystem::path defaultDbPath = boost::filesystem::path(pathStorage) / (std::string("pending-deletions.") + databaseServerIdentifier_ + ".db"); |
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335 std::string dbPath = delayedDeletionConfig.GetStringValue("Path", defaultDbPath.string()); |
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336 |
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337 LOG(WARNING) << "DelayedDeletion - Path to the SQLite database: " << dbPath; |
| 5024 | 338 |
| 339 // This must run after the allocation of "storage_", to make sure | |
| 340 // that the folder actually exists | |
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341 db_.reset(new PendingDeletionsDatabase(dbPath)); |
| 5024 | 342 |
| 343 OrthancPluginRegisterStorageArea2(context, StorageCreate, StorageReadWhole, StorageReadRange, StorageRemove); | |
| 344 | |
| 345 OrthancPluginRegisterOnChangeCallback(context, OnChangeCallback); | |
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346 |
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347 OrthancPlugins::RegisterRestCallback<GetPluginStatus>(std::string("/plugins/") + ORTHANC_PLUGIN_NAME + "/status", true); |
| 5024 | 348 } |
| 349 else | |
| 350 { | |
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351 LOG(WARNING) << "DelayedDeletion - plugin is loaded but disabled (check your \"DelayedDeletion.Enable\" configuration)"; |
| 5024 | 352 } |
| 353 | |
| 354 return 0; | |
| 355 } | |
| 356 | |
| 357 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
| 358 { | |
| 359 db_.reset(); | |
| 360 storage_.reset(); | |
| 361 } | |
| 362 | |
| 363 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
| 364 { | |
| 365 return ORTHANC_PLUGIN_NAME; | |
| 366 } | |
| 367 | |
| 368 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
| 369 { | |
| 370 return ORTHANC_PLUGIN_VERSION; | |
| 371 } | |
| 372 } |