Mercurial > hg > orthanc-python
annotate Sources/Plugin.cpp @ 63:32de70a1e4c7
New functions from the SDK wrapped in Python: CreateDicom, RegisterFindCallback, RegisterMoveCallback
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 10 Jun 2021 18:19:27 +0200 |
| parents | 23f3099bed47 |
| children | 091fb1903bfc |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Python plugin for Orthanc | |
|
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium |
| 0 | 4 * |
| 5 * This program is free software: you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Affero General Public License | |
| 7 * as published by the Free Software Foundation, either version 3 of | |
| 8 * the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, but | |
| 11 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Affero General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Affero General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 **/ | |
| 18 | |
| 19 | |
| 20 // http://edcjones.tripod.com/refcount.html | |
| 21 // https://docs.python.org/3/extending/extending.html | |
| 22 | |
| 23 // https://www.codevate.com/blog/7-concurrency-with-embedded-python-in-a-multi-threaded-c-application | |
| 24 // https://fr.slideshare.net/YiLungTsai/embed-python | |
| 25 | |
| 26 | |
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27 #include "DicomScpCallbacks.h" |
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28 #include "IncomingHttpRequestFilter.h" |
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29 #include "OnChangeCallback.h" |
| 0 | 30 #include "OnStoredInstanceCallback.h" |
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31 |
| 0 | 32 #include "RestCallbacks.h" |
| 33 #include "PythonModule.h" | |
| 34 | |
| 35 #include "Autogenerated/sdk.h" | |
| 36 | |
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37 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
| 0 | 38 |
| 39 #include <boost/algorithm/string/predicate.hpp> | |
| 40 #include <boost/filesystem.hpp> | |
| 41 | |
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42 |
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43 // The "dl_iterate_phdr()" function (to walk through shared libraries) |
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44 // is not available on Microsoft Windows and Apple OS X |
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45 #if defined(_WIN32) |
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46 # define HAS_DL_ITERATE 0 |
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47 #elif defined(__APPLE__) && defined(__MACH__) |
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48 # define HAS_DL_ITERATE 0 |
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49 #else |
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50 # define HAS_DL_ITERATE 1 |
| 0 | 51 #endif |
| 52 | |
| 53 | |
| 54 | |
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55 PyObject* CreateDicom(PyObject* module, PyObject* args) |
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56 { |
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57 // The GIL is locked at this point (no need to create "PythonLock") |
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58 const char* json = NULL; |
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59 PyObject* pixelData = NULL; |
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60 long int flags = 0; |
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61 |
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62 if (!PyArg_ParseTuple(args, "sOl", &json, &pixelData, &flags)) |
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63 { |
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64 PyErr_SetString(PyExc_TypeError, "Please provide a JSON string, an orthanc.Image object, and a set of orthanc.CreateDicomFlags"); |
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65 return NULL; |
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66 } |
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67 else |
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68 { |
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69 OrthancPluginImage* image = NULL; |
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70 |
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71 if (pixelData == Py_None) |
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72 { |
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73 // No pixel data |
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74 } |
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75 else if (Py_TYPE(pixelData) == GetOrthancPluginImageType()) |
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76 { |
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77 image = reinterpret_cast<sdk_OrthancPluginImage_Object*>(pixelData)->object_; |
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78 } |
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79 else |
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80 { |
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81 PyErr_SetString(PyExc_TypeError, "Second parameter is not a valid orthanc.Image"); |
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82 return NULL; |
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83 } |
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84 |
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85 OrthancPlugins::MemoryBuffer buffer; |
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86 OrthancPluginErrorCode code = OrthancPluginCreateDicom(OrthancPlugins::GetGlobalContext(), *buffer, json, image, |
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87 static_cast<OrthancPluginCreateDicomFlags>(flags)); |
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88 |
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89 if (code == OrthancPluginErrorCode_Success) |
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90 { |
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91 return PyBytes_FromStringAndSize(buffer.GetData(), buffer.GetSize()); |
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92 } |
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93 else |
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94 { |
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95 PyErr_SetString(PyExc_ValueError, "Cannot create the DICOM instance"); |
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96 return NULL; |
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97 } |
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98 } |
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99 } |
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100 |
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101 |
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102 |
| 0 | 103 static bool pythonEnabled_ = false; |
| 104 static std::string userScriptName_; | |
| 105 static std::vector<PyMethodDef> globalFunctions_; | |
| 106 | |
| 107 | |
| 108 static void InstallClasses(PyObject* module) | |
| 109 { | |
| 110 RegisterOrthancSdk(module); | |
| 111 } | |
| 112 | |
| 113 | |
| 114 static void SetupGlobalFunctions() | |
| 115 { | |
| 116 if (!globalFunctions_.empty()) | |
| 117 { | |
| 118 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
| 119 } | |
| 120 | |
| 121 /** | |
| 122 * Add all the manual global functions | |
| 123 **/ | |
| 124 | |
| 125 std::list<PyMethodDef> functions; | |
| 126 | |
| 127 { | |
| 128 PyMethodDef f = { "RegisterRestCallback", RegisterRestCallback, METH_VARARGS, "" }; | |
| 129 functions.push_back(f); | |
| 130 } | |
| 131 | |
| 132 { | |
| 133 PyMethodDef f = { "RegisterOnChangeCallback", RegisterOnChangeCallback, METH_VARARGS, "" }; | |
| 134 functions.push_back(f); | |
| 135 } | |
| 136 | |
| 137 { | |
| 138 PyMethodDef f = { "RegisterOnStoredInstanceCallback", RegisterOnStoredInstanceCallback, | |
| 139 METH_VARARGS, "" }; | |
| 140 functions.push_back(f); | |
| 141 } | |
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142 |
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143 |
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144 /** |
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145 * New in release 3.0 |
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146 **/ |
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147 |
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148 { |
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149 PyMethodDef f = { "RegisterIncomingHttpRequestFilter", RegisterIncomingHttpRequestFilter, METH_VARARGS, "" }; |
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150 functions.push_back(f); |
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151 } |
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152 |
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153 |
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154 /** |
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155 * New in release 3.1 |
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156 **/ |
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157 |
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158 { |
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159 PyMethodDef f = { "CreateDicom", CreateDicom, METH_VARARGS, "" }; |
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160 functions.push_back(f); |
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161 } |
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162 |
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163 { |
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164 PyMethodDef f = { "RegisterFindCallback", RegisterFindCallback, METH_VARARGS, "" }; |
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165 functions.push_back(f); |
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166 } |
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167 |
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168 { |
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169 PyMethodDef f = { "RegisterMoveCallback", RegisterMoveCallback, METH_VARARGS, "" }; |
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170 functions.push_back(f); |
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171 } |
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172 |
| 0 | 173 |
| 174 /** | |
| 175 * Append all the global functions that were automatically generated | |
| 176 **/ | |
| 177 | |
| 178 const PyMethodDef* sdk = GetOrthancSdkFunctions(); | |
| 179 | |
| 180 for (size_t i = 0; sdk[i].ml_name != NULL; i++) | |
| 181 { | |
| 182 functions.push_back(sdk[i]); | |
| 183 } | |
| 184 | |
| 185 /** | |
| 186 * Flatten the list of functions into the vector | |
| 187 **/ | |
| 188 | |
| 189 globalFunctions_.resize(functions.size()); | |
| 190 std::copy(functions.begin(), functions.end(), globalFunctions_.begin()); | |
| 191 | |
| 192 PyMethodDef sentinel = { NULL }; | |
| 193 globalFunctions_.push_back(sentinel); | |
| 194 } | |
| 195 | |
| 196 | |
| 197 static PyMethodDef* GetGlobalFunctions() | |
| 198 { | |
| 199 if (globalFunctions_.empty()) | |
| 200 { | |
| 201 // "SetupGlobalFunctions()" should have been called | |
| 202 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
| 203 } | |
| 204 else | |
| 205 { | |
| 206 return &globalFunctions_[0]; | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 | |
| 211 | |
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212 #if HAS_DL_ITERATE == 1 |
| 0 | 213 |
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214 #include <dlfcn.h> |
| 0 | 215 #include <link.h> // For dl_phdr_info |
| 216 | |
| 217 static int ForceImportCallback(struct dl_phdr_info *info, size_t size, void *data) | |
| 218 { | |
| 219 /** | |
| 220 * The following line solves the error: "ImportError: | |
| 221 * /usr/lib/python2.7/dist-packages/PIL/_imaging.x86_64-linux-gnu.so: | |
| 222 * undefined symbol: PyExc_SystemError" | |
| 223 * https://stackoverflow.com/a/48517485/881731 | |
| 224 * | |
| 225 * dlopen("/usr/lib/x86_64-linux-gnu/libpython2.7.so", RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
| 226 * | |
| 227 * Another fix consists in using LD_PRELOAD as follows: | |
| 228 * LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libpython2.7.so ~/Subversion/orthanc/i/Orthanc tutu.json | |
| 229 **/ | |
| 230 | |
| 231 std::string module(info->dlpi_name); | |
| 232 | |
| 233 if (module.find("python") != std::string::npos) | |
| 234 { | |
| 235 OrthancPlugins::LogWarning("Force global loading of Python shared library: " + module); | |
| 236 dlopen(module.c_str(), RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
| 237 } | |
| 238 | |
| 239 return 0; | |
| 240 } | |
| 241 | |
| 242 #endif | |
| 243 | |
| 244 | |
| 245 extern "C" | |
| 246 { | |
| 247 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* c) | |
| 248 { | |
| 249 OrthancPlugins::SetGlobalContext(c); | |
| 250 OrthancPlugins::LogWarning("Python plugin is initializing"); | |
| 251 | |
| 252 | |
| 253 /* Check the version of the Orthanc core */ | |
| 254 if (OrthancPluginCheckVersion(c) == 0) | |
| 255 { | |
| 256 char info[1024]; | |
| 257 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
| 258 c->orthancVersion, | |
| 259 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
| 260 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
| 261 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
| 262 OrthancPluginLogError(c, info); | |
| 263 return -1; | |
| 264 } | |
| 11 | 265 |
| 266 OrthancPluginSetDescription(c, "Run Python scripts as Orthanc plugins"); | |
| 267 | |
| 0 | 268 try |
| 269 { | |
| 270 /** | |
| 271 * Detection of the user script | |
| 272 **/ | |
| 273 | |
| 274 OrthancPlugins::OrthancConfiguration config; | |
| 275 | |
| 276 static const char* const OPTION = "PythonScript"; | |
| 277 | |
| 278 std::string script; | |
| 279 if (!config.LookupStringValue(script, OPTION)) | |
| 280 { | |
| 281 pythonEnabled_ = false; | |
| 282 | |
| 283 OrthancPlugins::LogWarning("The option \"" + std::string(OPTION) + "\" is not provided: " + | |
| 284 "Python scripting is disabled"); | |
| 285 } | |
| 286 else | |
| 287 { | |
| 288 pythonEnabled_ = true; | |
| 289 | |
| 290 /** | |
| 291 * Installation of the user script | |
| 292 **/ | |
| 293 | |
| 294 const boost::filesystem::path path(script); | |
| 295 if (!boost::iequals(path.extension().string(), ".py")) | |
| 296 { | |
| 297 OrthancPlugins::LogError("Python script must have the \".py\" file extension: " + | |
| 298 path.string()); | |
| 299 return -1; | |
| 300 } | |
| 301 | |
| 302 if (!boost::filesystem::is_regular_file(path)) | |
| 303 { | |
| 304 OrthancPlugins::LogError("Inexistent directory for the Python script: " + | |
| 305 path.string()); | |
| 306 return -1; | |
| 307 } | |
| 308 | |
| 309 boost::filesystem::path userScriptDirectory = boost::filesystem::absolute(path).parent_path(); | |
| 310 | |
| 311 { | |
| 312 boost::filesystem::path module = path.filename().replace_extension(""); | |
| 313 userScriptName_ = module.string(); | |
| 314 } | |
| 315 | |
| 316 OrthancPlugins::LogWarning("Using Python script \"" + userScriptName_ + | |
| 317 ".py\" from directory: " + userScriptDirectory.string()); | |
| 318 | |
| 319 | |
| 320 /** | |
| 321 * Initialization of Python | |
| 322 **/ | |
| 323 | |
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324 #if HAS_DL_ITERATE == 1 |
| 0 | 325 dl_iterate_phdr(ForceImportCallback, NULL); |
| 326 #endif | |
| 327 | |
| 328 SetupGlobalFunctions(); | |
| 329 PythonLock::GlobalInitialize("orthanc", "Exception", | |
| 330 GetGlobalFunctions, InstallClasses, | |
| 331 config.GetBooleanValue("PythonVerbose", false)); | |
| 332 PythonLock::AddSysPath(userScriptDirectory.string()); | |
| 333 | |
| 334 | |
| 335 /** | |
| 336 * Force loading the declarations in the user script | |
| 337 **/ | |
| 338 | |
| 339 PythonLock lock; | |
| 340 | |
| 341 { | |
| 342 PythonModule module(lock, userScriptName_); | |
| 343 } | |
| 344 | |
| 345 std::string traceback; | |
| 346 if (lock.HasErrorOccurred(traceback)) | |
| 347 { | |
| 348 OrthancPlugins::LogError("Error during the installation of the Python script, " | |
| 349 "traceback:\n" + traceback); | |
| 350 return -1; | |
| 351 } | |
| 352 } | |
| 353 } | |
| 354 catch (ORTHANC_PLUGINS_EXCEPTION_CLASS& e) | |
| 355 { | |
| 356 OrthancPlugins::LogError("Exception while starting the Python plugin: " + | |
| 357 std::string(e.What(c))); | |
| 358 return -1; | |
| 359 } | |
| 360 | |
| 361 return 0; | |
| 362 } | |
| 363 | |
| 364 | |
| 365 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
| 366 { | |
| 367 OrthancPlugins::LogWarning("Python plugin is finalizing"); | |
| 368 | |
| 369 if (pythonEnabled_) | |
| 370 { | |
| 371 FinalizeOnChangeCallback(); | |
| 372 FinalizeRestCallbacks(); | |
| 373 FinalizeOnStoredInstanceCallback(); | |
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374 FinalizeIncomingHttpRequestFilter(); |
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375 FinalizeDicomScpCallbacks(); |
| 0 | 376 |
| 377 PythonLock::GlobalFinalize(); | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 | |
| 382 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
| 383 { | |
| 384 return "python"; | |
| 385 } | |
| 386 | |
| 387 | |
| 388 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
| 389 { | |
| 390 return PLUGIN_VERSION; | |
| 391 } | |
| 392 } |