Mercurial > hg > orthanc-python
annotate Sources/Plugin.cpp @ 47:42de8b600c0c
Support of Apple OS X
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 04 Aug 2020 15:32:49 +0200 |
| parents | fd58eb5749ed |
| children | 70abe3ebbbfc |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Python plugin for Orthanc | |
| 3 * Copyright (C) 2017-2020 Osimis S.A., Belgium | |
| 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 | |
| 27 #include "OnStoredInstanceCallback.h" | |
| 28 #include "OnChangeCallback.h" | |
| 29 #include "RestCallbacks.h" | |
| 30 #include "PythonModule.h" | |
| 31 | |
| 32 #include "Autogenerated/sdk.h" | |
| 33 | |
|
36
fd58eb5749ed
CMake simplification using DownloadOrthancFramework.cmake
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
11
diff
changeset
|
34 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
| 0 | 35 |
| 36 #include <boost/algorithm/string/predicate.hpp> | |
| 37 #include <boost/filesystem.hpp> | |
| 38 | |
|
47
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
39 |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
40 // The "dl_iterate_phdr()" function (to walk through shared libraries) |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
41 // is not available on Microsoft Windows and Apple OS X |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
42 #if defined(_WIN32) |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
43 # define HAS_DL_ITERATE 0 |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
44 #elif defined(__APPLE__) && defined(__MACH__) |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
45 # define HAS_DL_ITERATE 0 |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
46 #else |
|
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
47 # define HAS_DL_ITERATE 1 |
| 0 | 48 #endif |
| 49 | |
| 50 | |
| 51 | |
| 52 static bool pythonEnabled_ = false; | |
| 53 static std::string userScriptName_; | |
| 54 static std::vector<PyMethodDef> globalFunctions_; | |
| 55 | |
| 56 | |
| 57 static void InstallClasses(PyObject* module) | |
| 58 { | |
| 59 RegisterOrthancSdk(module); | |
| 60 } | |
| 61 | |
| 62 | |
| 63 static void SetupGlobalFunctions() | |
| 64 { | |
| 65 if (!globalFunctions_.empty()) | |
| 66 { | |
| 67 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
| 68 } | |
| 69 | |
| 70 /** | |
| 71 * Add all the manual global functions | |
| 72 **/ | |
| 73 | |
| 74 std::list<PyMethodDef> functions; | |
| 75 | |
| 76 { | |
| 77 PyMethodDef f = { "RegisterRestCallback", RegisterRestCallback, METH_VARARGS, "" }; | |
| 78 functions.push_back(f); | |
| 79 } | |
| 80 | |
| 81 { | |
| 82 PyMethodDef f = { "RegisterOnChangeCallback", RegisterOnChangeCallback, METH_VARARGS, "" }; | |
| 83 functions.push_back(f); | |
| 84 } | |
| 85 | |
| 86 { | |
| 87 PyMethodDef f = { "RegisterOnStoredInstanceCallback", RegisterOnStoredInstanceCallback, | |
| 88 METH_VARARGS, "" }; | |
| 89 functions.push_back(f); | |
| 90 } | |
| 91 | |
| 92 /** | |
| 93 * Append all the global functions that were automatically generated | |
| 94 **/ | |
| 95 | |
| 96 const PyMethodDef* sdk = GetOrthancSdkFunctions(); | |
| 97 | |
| 98 for (size_t i = 0; sdk[i].ml_name != NULL; i++) | |
| 99 { | |
| 100 functions.push_back(sdk[i]); | |
| 101 } | |
| 102 | |
| 103 /** | |
| 104 * Flatten the list of functions into the vector | |
| 105 **/ | |
| 106 | |
| 107 globalFunctions_.resize(functions.size()); | |
| 108 std::copy(functions.begin(), functions.end(), globalFunctions_.begin()); | |
| 109 | |
| 110 PyMethodDef sentinel = { NULL }; | |
| 111 globalFunctions_.push_back(sentinel); | |
| 112 } | |
| 113 | |
| 114 | |
| 115 static PyMethodDef* GetGlobalFunctions() | |
| 116 { | |
| 117 if (globalFunctions_.empty()) | |
| 118 { | |
| 119 // "SetupGlobalFunctions()" should have been called | |
| 120 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
| 121 } | |
| 122 else | |
| 123 { | |
| 124 return &globalFunctions_[0]; | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 | |
| 129 | |
|
47
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
130 #if HAS_DL_ITERATE == 1 |
| 0 | 131 |
|
47
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
132 #include <dlfcn.h> |
| 0 | 133 #include <link.h> // For dl_phdr_info |
| 134 | |
| 135 static int ForceImportCallback(struct dl_phdr_info *info, size_t size, void *data) | |
| 136 { | |
| 137 /** | |
| 138 * The following line solves the error: "ImportError: | |
| 139 * /usr/lib/python2.7/dist-packages/PIL/_imaging.x86_64-linux-gnu.so: | |
| 140 * undefined symbol: PyExc_SystemError" | |
| 141 * https://stackoverflow.com/a/48517485/881731 | |
| 142 * | |
| 143 * dlopen("/usr/lib/x86_64-linux-gnu/libpython2.7.so", RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
| 144 * | |
| 145 * Another fix consists in using LD_PRELOAD as follows: | |
| 146 * LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libpython2.7.so ~/Subversion/orthanc/i/Orthanc tutu.json | |
| 147 **/ | |
| 148 | |
| 149 std::string module(info->dlpi_name); | |
| 150 | |
| 151 if (module.find("python") != std::string::npos) | |
| 152 { | |
| 153 OrthancPlugins::LogWarning("Force global loading of Python shared library: " + module); | |
| 154 dlopen(module.c_str(), RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
| 155 } | |
| 156 | |
| 157 return 0; | |
| 158 } | |
| 159 | |
| 160 #endif | |
| 161 | |
| 162 | |
| 163 extern "C" | |
| 164 { | |
| 165 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* c) | |
| 166 { | |
| 167 OrthancPlugins::SetGlobalContext(c); | |
| 168 OrthancPlugins::LogWarning("Python plugin is initializing"); | |
| 169 | |
| 170 | |
| 171 /* Check the version of the Orthanc core */ | |
| 172 if (OrthancPluginCheckVersion(c) == 0) | |
| 173 { | |
| 174 char info[1024]; | |
| 175 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
| 176 c->orthancVersion, | |
| 177 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
| 178 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
| 179 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
| 180 OrthancPluginLogError(c, info); | |
| 181 return -1; | |
| 182 } | |
| 11 | 183 |
| 184 OrthancPluginSetDescription(c, "Run Python scripts as Orthanc plugins"); | |
| 185 | |
| 0 | 186 try |
| 187 { | |
| 188 /** | |
| 189 * Detection of the user script | |
| 190 **/ | |
| 191 | |
| 192 OrthancPlugins::OrthancConfiguration config; | |
| 193 | |
| 194 static const char* const OPTION = "PythonScript"; | |
| 195 | |
| 196 std::string script; | |
| 197 if (!config.LookupStringValue(script, OPTION)) | |
| 198 { | |
| 199 pythonEnabled_ = false; | |
| 200 | |
| 201 OrthancPlugins::LogWarning("The option \"" + std::string(OPTION) + "\" is not provided: " + | |
| 202 "Python scripting is disabled"); | |
| 203 } | |
| 204 else | |
| 205 { | |
| 206 pythonEnabled_ = true; | |
| 207 | |
| 208 /** | |
| 209 * Installation of the user script | |
| 210 **/ | |
| 211 | |
| 212 const boost::filesystem::path path(script); | |
| 213 if (!boost::iequals(path.extension().string(), ".py")) | |
| 214 { | |
| 215 OrthancPlugins::LogError("Python script must have the \".py\" file extension: " + | |
| 216 path.string()); | |
| 217 return -1; | |
| 218 } | |
| 219 | |
| 220 if (!boost::filesystem::is_regular_file(path)) | |
| 221 { | |
| 222 OrthancPlugins::LogError("Inexistent directory for the Python script: " + | |
| 223 path.string()); | |
| 224 return -1; | |
| 225 } | |
| 226 | |
| 227 boost::filesystem::path userScriptDirectory = boost::filesystem::absolute(path).parent_path(); | |
| 228 | |
| 229 { | |
| 230 boost::filesystem::path module = path.filename().replace_extension(""); | |
| 231 userScriptName_ = module.string(); | |
| 232 } | |
| 233 | |
| 234 OrthancPlugins::LogWarning("Using Python script \"" + userScriptName_ + | |
| 235 ".py\" from directory: " + userScriptDirectory.string()); | |
| 236 | |
| 237 | |
| 238 /** | |
| 239 * Initialization of Python | |
| 240 **/ | |
| 241 | |
|
47
42de8b600c0c
Support of Apple OS X
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
36
diff
changeset
|
242 #if HAS_DL_ITERATE == 1 |
| 0 | 243 dl_iterate_phdr(ForceImportCallback, NULL); |
| 244 #endif | |
| 245 | |
| 246 SetupGlobalFunctions(); | |
| 247 PythonLock::GlobalInitialize("orthanc", "Exception", | |
| 248 GetGlobalFunctions, InstallClasses, | |
| 249 config.GetBooleanValue("PythonVerbose", false)); | |
| 250 PythonLock::AddSysPath(userScriptDirectory.string()); | |
| 251 | |
| 252 | |
| 253 /** | |
| 254 * Force loading the declarations in the user script | |
| 255 **/ | |
| 256 | |
| 257 PythonLock lock; | |
| 258 | |
| 259 { | |
| 260 PythonModule module(lock, userScriptName_); | |
| 261 } | |
| 262 | |
| 263 std::string traceback; | |
| 264 if (lock.HasErrorOccurred(traceback)) | |
| 265 { | |
| 266 OrthancPlugins::LogError("Error during the installation of the Python script, " | |
| 267 "traceback:\n" + traceback); | |
| 268 return -1; | |
| 269 } | |
| 270 } | |
| 271 } | |
| 272 catch (ORTHANC_PLUGINS_EXCEPTION_CLASS& e) | |
| 273 { | |
| 274 OrthancPlugins::LogError("Exception while starting the Python plugin: " + | |
| 275 std::string(e.What(c))); | |
| 276 return -1; | |
| 277 } | |
| 278 | |
| 279 return 0; | |
| 280 } | |
| 281 | |
| 282 | |
| 283 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
| 284 { | |
| 285 OrthancPlugins::LogWarning("Python plugin is finalizing"); | |
| 286 | |
| 287 if (pythonEnabled_) | |
| 288 { | |
| 289 FinalizeOnChangeCallback(); | |
| 290 FinalizeRestCallbacks(); | |
| 291 FinalizeOnStoredInstanceCallback(); | |
| 292 | |
| 293 PythonLock::GlobalFinalize(); | |
| 294 } | |
| 295 } | |
| 296 | |
| 297 | |
| 298 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
| 299 { | |
| 300 return "python"; | |
| 301 } | |
| 302 | |
| 303 | |
| 304 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
| 305 { | |
| 306 return PLUGIN_VERSION; | |
| 307 } | |
| 308 } |