Mercurial > hg > orthanc-java
annotate Plugin/Plugin.cpp @ 9:88c1614fb3dc
added sample basic plugin
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 19 Oct 2023 11:55:38 +0200 |
| parents | 26c08ff926a3 |
| children | 1c407ba1d311 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * SPDX-FileCopyrightText: 2023 Sebastien Jodogne, UCLouvain, Belgium | |
| 3 * SPDX-License-Identifier: GPL-3.0-or-later | |
| 4 */ | |
| 5 | |
| 6 /** | |
| 7 * Java plugin for Orthanc | |
| 8 * Copyright (C) 2023 Sebastien Jodogne, UCLouvain, Belgium | |
| 9 * | |
| 10 * This program is free software: you can redistribute it and/or | |
| 11 * modify it under the terms of the GNU General Public License as | |
| 12 * published by the Free Software Foundation, either version 3 of the | |
| 13 * License, or (at your option) any later version. | |
| 14 * | |
| 15 * This program is distributed in the hope that it will be useful, but | |
| 16 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 * General Public License for more details. | |
| 19 * | |
| 20 * You should have received a copy of the GNU General Public License | |
| 21 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 22 **/ | |
| 23 | |
| 24 | |
| 7 | 25 #include "JavaLocalObject.h" |
| 26 #include "JavaGlobalReference.h" | |
| 27 #include "OrthancBytes.h" | |
| 28 #include "OrthancString.h" | |
| 29 #include "JavaBytes.h" | |
| 30 #include "JavaString.h" | |
| 5 | 31 #include "JavaEnvironment.h" |
| 32 #include "JavaVirtualMachine.h" | |
| 33 | |
| 0 | 34 #include <orthanc/OrthancCPlugin.h> |
| 35 | |
| 36 #include <cassert> | |
| 37 #include <iostream> | |
| 38 #include <jni.h> | |
| 39 #include <list> | |
| 40 #include <map> | |
| 41 #include <memory> | |
| 42 #include <set> | |
| 43 #include <stdexcept> | |
| 44 #include <vector> | |
| 45 | |
| 46 #include <json/reader.h> | |
| 47 | |
| 48 #include "Mutex.h" | |
| 49 | |
| 5 | 50 OrthancPluginContext* context_ = NULL; |
| 0 | 51 |
| 52 static std::unique_ptr<JavaVirtualMachine> java_; | |
| 53 | |
| 54 | |
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55 // This function is implemented in the "NativeSDK.cpp" auto-generated file |
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56 extern void JNI_LoadNatives(std::vector<JNINativeMethod>& methods); |
| 0 | 57 |
| 58 | |
| 59 #define MAX_REST_CALLBACKS 10 | |
| 60 | |
| 61 class CallbacksConfiguration : public NonCopyable | |
| 62 { | |
| 63 private: | |
| 64 Mutex mutex_; | |
| 65 std::list<JavaGlobalReference*> onChangeCallbacks_; | |
| 66 std::vector<JavaGlobalReference*> onRestRequestCallbacks_; | |
| 67 | |
| 68 static void DestructCallbacks(std::list<JavaGlobalReference*>& lst) | |
| 69 { | |
| 70 for (std::list<JavaGlobalReference*>::iterator it = lst.begin(); it != lst.end(); ++it) | |
| 71 { | |
| 72 assert(*it != NULL); | |
| 73 delete *it; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 static void DestructCallbacks(std::vector<JavaGlobalReference*>& v) | |
| 78 { | |
| 79 for (size_t i = 0; i < v.size(); i++) | |
| 80 { | |
| 81 assert(v[i] != NULL); | |
| 82 delete v[i]; | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 void CopyCallbacks(std::list<jobject>& target, | |
| 87 const std::list<JavaGlobalReference*>& lst) | |
| 88 { | |
| 89 Mutex::Locker locker(mutex_); | |
| 90 target.clear(); | |
| 91 | |
| 92 for (std::list<JavaGlobalReference*>::const_iterator it = lst.begin(); it != lst.end(); ++it) | |
| 93 { | |
| 94 assert(*it != NULL); | |
| 95 target.push_back((*it)->GetValue()); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 void AddCallback(std::list<JavaGlobalReference*>& lst, | |
| 100 JavaVirtualMachine& jvm, | |
| 101 jobject callback) | |
| 102 { | |
| 103 if (callback == NULL) | |
| 104 { | |
| 105 throw std::runtime_error("Null pointer"); | |
| 106 } | |
| 107 else | |
| 108 { | |
| 109 Mutex::Locker locker(mutex_); | |
| 110 lst.push_back(new JavaGlobalReference(jvm, callback)); | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 public: | |
| 115 CallbacksConfiguration() | |
| 116 { | |
| 117 onRestRequestCallbacks_.reserve(MAX_REST_CALLBACKS); | |
| 118 } | |
| 119 | |
| 120 ~CallbacksConfiguration() | |
| 121 { | |
| 122 DestructCallbacks(onChangeCallbacks_); | |
| 123 DestructCallbacks(onRestRequestCallbacks_); | |
| 124 } | |
| 125 | |
| 126 void AddOnChangeCallback(JavaVirtualMachine& jvm, | |
| 127 jobject callback) | |
| 128 { | |
| 129 AddCallback(onChangeCallbacks_, jvm, callback); | |
| 130 } | |
| 131 | |
| 132 void GetOnChangeCallbacks(std::list<jobject>& target) | |
| 133 { | |
| 134 CopyCallbacks(target, onChangeCallbacks_); | |
| 135 } | |
| 136 | |
| 137 size_t AddOnRestRequestCallback(JavaVirtualMachine& jvm, | |
| 138 jobject callback) | |
| 139 { | |
| 140 if (callback == NULL) | |
| 141 { | |
| 142 throw std::runtime_error("Null pointer"); | |
| 143 } | |
| 144 else | |
| 145 { | |
| 146 Mutex::Locker locker(mutex_); | |
| 147 | |
| 148 if (onRestRequestCallbacks_.size() >= MAX_REST_CALLBACKS) | |
| 149 { | |
| 150 char buf[16]; | |
| 151 sprintf(buf, "%d", MAX_REST_CALLBACKS); | |
| 152 throw std::runtime_error("The Java plugin for Orthanc has been compiled for a maximum of " + | |
| 153 std::string(buf) + " REST callbacks"); | |
| 154 } | |
| 155 else | |
| 156 { | |
| 157 size_t result = onRestRequestCallbacks_.size(); | |
| 158 onRestRequestCallbacks_.push_back(new JavaGlobalReference(jvm, callback)); | |
| 159 return result; | |
| 160 } | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 jobject GetOnRestCallback(size_t i) | |
| 165 { | |
| 166 Mutex::Locker locker(mutex_); | |
| 167 | |
| 168 if (i >= onRestRequestCallbacks_.size()) | |
| 169 { | |
| 170 throw std::runtime_error("Unknown REST callback"); | |
| 171 } | |
| 172 else | |
| 173 { | |
| 174 assert(onRestRequestCallbacks_[i] != NULL); | |
| 175 return onRestRequestCallbacks_[i]->GetValue(); | |
| 176 } | |
| 177 } | |
| 178 }; | |
| 179 | |
| 180 static std::unique_ptr<CallbacksConfiguration> callbacksConfiguration_; | |
| 181 | |
| 182 | |
| 183 | |
| 184 | |
| 185 template<size_t Index> | |
| 186 class RestCallbacksPool | |
| 187 { | |
| 188 private: | |
| 189 RestCallbacksPool<Index - 1> next_; | |
| 190 | |
| 191 static OrthancPluginErrorCode Callback(OrthancPluginRestOutput* output, | |
| 192 const char* uri, | |
| 193 const OrthancPluginHttpRequest* request) | |
| 194 { | |
| 195 try | |
| 196 { | |
| 197 jobject callback = callbacksConfiguration_->GetOnRestCallback(MAX_REST_CALLBACKS - Index); | |
| 198 if (callback == NULL) | |
| 199 { | |
| 200 throw std::runtime_error("Missing callback"); | |
| 201 } | |
| 202 | |
| 203 std::vector<std::string> groups; | |
| 204 groups.resize(request->groupsCount); | |
| 205 for (uint32_t i = 0; i < request->groupsCount; i++) | |
| 206 { | |
| 207 groups[i].assign(request->groups[i]); | |
| 208 } | |
| 209 | |
| 210 std::map<std::string, std::string> headers; | |
| 211 for (uint32_t i = 0; i < request->headersCount; i++) | |
| 212 { | |
| 213 headers[request->headersKeys[i]] = request->headersValues[i]; | |
| 214 } | |
| 215 | |
| 216 std::map<std::string, std::string> getParameters; | |
| 217 for (uint32_t i = 0; i < request->getCount; i++) | |
| 218 { | |
| 219 getParameters[request->getKeys[i]] = request->getValues[i]; | |
| 220 } | |
| 221 | |
| 222 JavaEnvironment env(*java_); | |
| 223 | |
| 7 | 224 JavaLocalObject joutput(env, env.ConstructJavaWrapper("be/uclouvain/orthanc/RestOutput", output)); |
| 225 JavaLocalObject jmethod(env, env.ConstructEnumValue("be/uclouvain/orthanc/HttpMethod", request->method)); | |
| 226 JavaLocalObject juri(env, env.GetValue().NewStringUTF(uri == NULL ? "" : uri)); | |
| 227 std::unique_ptr<JavaLocalObject> jgroups(JavaLocalObject::CreateArrayOfStrings(env, groups)); | |
| 228 std::unique_ptr<JavaLocalObject> jheaders(JavaLocalObject::CreateDictionary(env, headers)); | |
| 229 std::unique_ptr<JavaLocalObject> jgetParameters(JavaLocalObject::CreateDictionary(env, getParameters)); | |
| 230 JavaLocalObject jbody(env, env.ConstructByteArray(request->bodySize, request->body)); | |
| 0 | 231 |
| 232 jmethodID call = env.GetMethodID( | |
| 233 env.GetObjectClass(callback), "call", | |
| 234 "(Lbe/uclouvain/orthanc/RestOutput;Lbe/uclouvain/orthanc/HttpMethod;Ljava/lang/String;" | |
| 235 "[Ljava/lang/String;Ljava/util/Map;Ljava/util/Map;[B)V"); | |
| 236 | |
| 237 env.GetValue().CallVoidMethod(callback, call, joutput.GetValue(), jmethod.GetValue(), juri.GetValue(), | |
| 238 jgroups->GetValue(), jheaders->GetValue(), jgetParameters->GetValue(), jbody.GetValue()); | |
| 239 env.CheckException(); | |
| 240 | |
| 241 return OrthancPluginErrorCode_Success; | |
| 242 } | |
| 243 catch (std::runtime_error& e) | |
| 244 { | |
| 245 OrthancPluginLogError(context_, e.what()); | |
| 246 return OrthancPluginErrorCode_Plugin; | |
| 247 } | |
| 248 catch (...) | |
| 249 { | |
| 250 OrthancPluginLogError(context_, "Caught native exception"); | |
| 251 return OrthancPluginErrorCode_Plugin; | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 public: | |
| 256 OrthancPluginRestCallback GetCallback(size_t i) | |
| 257 { | |
| 258 if (i == 0) | |
| 259 { | |
| 260 return Callback; | |
| 261 } | |
| 262 else | |
| 263 { | |
| 264 return next_.GetCallback(i - 1); | |
| 265 } | |
| 266 } | |
| 267 }; | |
| 268 | |
| 269 template<> | |
| 270 class RestCallbacksPool<0> | |
| 271 { | |
| 272 public: | |
| 273 OrthancPluginRestCallback& GetCallback(size_t i) | |
| 274 { | |
| 275 throw std::runtime_error("Out of tuple"); | |
| 276 } | |
| 277 }; | |
| 278 | |
| 279 | |
| 280 static RestCallbacksPool<MAX_REST_CALLBACKS> restCallbacksPool_; | |
| 281 | |
| 282 | |
| 283 | |
| 284 OrthancPluginErrorCode OnChangeCallback(OrthancPluginChangeType changeType, | |
| 285 OrthancPluginResourceType resourceType, | |
| 286 const char* resourceId) | |
| 287 { | |
| 288 try | |
| 289 { | |
| 290 std::list<jobject> callbacks; | |
| 291 callbacksConfiguration_->GetOnChangeCallbacks(callbacks); | |
| 292 | |
| 293 if (!callbacks.empty()) | |
| 294 { | |
| 295 JavaEnvironment env(*java_); | |
| 296 | |
| 7 | 297 JavaLocalObject c(env, env.ConstructEnumValue("be/uclouvain/orthanc/ChangeType", changeType)); |
| 298 JavaLocalObject r(env, env.ConstructEnumValue("be/uclouvain/orthanc/ResourceType", resourceType)); | |
| 299 JavaLocalObject s(env, env.GetValue().NewStringUTF(resourceId == NULL ? "" : resourceId)); | |
| 0 | 300 |
| 301 for (std::list<jobject>::const_iterator | |
| 302 callback = callbacks.begin(); callback != callbacks.end(); ++callback) | |
| 303 { | |
| 304 assert(*callback != NULL); | |
| 305 | |
| 306 jmethodID call = env.GetMethodID( | |
| 307 env.GetObjectClass(*callback), "call", | |
| 308 "(Lbe/uclouvain/orthanc/ChangeType;Lbe/uclouvain/orthanc/ResourceType;Ljava/lang/String;)V"); | |
| 309 | |
| 310 env.GetValue().CallVoidMethod(*callback, call, c.GetValue(), r.GetValue(), s.GetValue()); | |
| 311 env.CheckException(); | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 return OrthancPluginErrorCode_Success; | |
| 316 } | |
| 317 catch (std::runtime_error& e) | |
| 318 { | |
| 319 OrthancPluginLogError(context_, e.what()); | |
| 320 return OrthancPluginErrorCode_Plugin; | |
| 321 } | |
| 322 catch (...) | |
| 323 { | |
| 324 OrthancPluginLogError(context_, "Caught native exception"); | |
| 325 return OrthancPluginErrorCode_Plugin; | |
| 326 } | |
| 327 } | |
| 328 | |
| 329 | |
| 330 JNIEXPORT void RegisterOnChangeCallback(JNIEnv* env, jobject sdkObject, jobject callback) | |
| 331 { | |
| 332 try | |
| 333 { | |
| 334 callbacksConfiguration_->AddOnChangeCallback(*java_, callback); | |
| 335 } | |
| 336 catch (std::runtime_error& e) | |
| 337 { | |
| 5 | 338 JavaEnvironment::ThrowOrthancException(env, e.what()); |
| 0 | 339 } |
| 340 catch (...) | |
| 341 { | |
| 5 | 342 JavaEnvironment::ThrowOrthancException(env, OrthancPluginErrorCode_Plugin); |
| 0 | 343 } |
| 344 } | |
| 345 | |
| 346 | |
| 347 JNIEXPORT void RegisterOnRestRequestCallback(JNIEnv* env, jobject sdkObject, jstring regex, jobject callback) | |
| 348 { | |
| 349 try | |
| 350 { | |
| 351 JavaString cregex(env, regex); | |
| 352 size_t index = callbacksConfiguration_->AddOnRestRequestCallback(*java_, callback); | |
| 353 OrthancPluginRegisterRestCallbackNoLock(context_, cregex.GetValue(), restCallbacksPool_.GetCallback(index)); | |
| 354 } | |
| 355 catch (std::runtime_error& e) | |
| 356 { | |
| 5 | 357 JavaEnvironment::ThrowOrthancException(env, e.what()); |
| 0 | 358 } |
| 359 catch (...) | |
| 360 { | |
| 5 | 361 JavaEnvironment::ThrowOrthancException(env, OrthancPluginErrorCode_Plugin); |
| 0 | 362 } |
| 363 } | |
| 364 | |
| 365 | |
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366 static void ParseJson(Json::Value& target, |
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367 const std::string& source) |
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368 { |
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369 Json::CharReaderBuilder builder; |
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370 builder.settings_["collectComments"] = false; |
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371 |
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372 const std::unique_ptr<Json::CharReader> reader(builder.newCharReader()); |
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373 assert(reader.get() != NULL); |
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374 |
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375 JSONCPP_STRING err; |
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376 if (!reader->parse(source.c_str(), source.c_str() + source.size(), &target, &err)) |
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377 { |
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378 throw std::runtime_error("Cannot parse JSON: " + err); |
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379 } |
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380 } |
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381 |
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382 |
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383 static bool HasOption(const Json::Value& json, |
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384 const std::string& key, |
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385 Json::ValueType type, |
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386 bool isMandatory) |
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387 { |
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388 if (!json.isMember(key)) |
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389 { |
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390 if (isMandatory) |
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391 { |
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392 throw std::runtime_error("Missing configuration option for the Java plugin: \"" + key + "\""); |
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393 } |
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394 else |
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395 { |
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396 return false; |
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397 } |
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398 } |
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399 else if (json[key].type() == type) |
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400 { |
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401 return true; |
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402 } |
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403 else |
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404 { |
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405 throw std::runtime_error("The configuration option \"" + key + "\" for the Java plugin has not the proper type"); |
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406 } |
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407 } |
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408 |
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409 |
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410 static std::string GetMandatoryString(const Json::Value& json, |
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411 const std::string& key) |
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412 { |
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413 HasOption(json, key, Json::stringValue, true); |
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414 assert(json.isMember(key) && |
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415 json[key].type() == Json::stringValue); |
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416 return json[key].asString(); |
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417 } |
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418 |
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419 |
| 0 | 420 extern "C" |
| 421 { | |
| 422 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context) | |
| 423 { | |
| 424 context_ = context; | |
| 425 | |
| 426 /* Check the version of the Orthanc core */ | |
| 427 if (OrthancPluginCheckVersion(context) == 0) | |
| 428 { | |
| 429 char info[1024]; | |
| 430 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
| 431 context->orthancVersion, | |
| 432 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
| 433 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
| 434 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
| 435 OrthancPluginLogError(context, info); | |
| 436 return -1; | |
| 437 } | |
| 438 | |
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439 OrthancPluginSetDescription(context, "Java plugin for Orthanc"); |
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440 |
| 0 | 441 try |
| 442 { | |
| 443 { | |
| 444 // Sanity check to ensure that the compiler has created different callback functions | |
| 445 std::set<intptr_t> c; | |
| 446 for (unsigned int i = 0; i < MAX_REST_CALLBACKS; i++) | |
| 447 { | |
| 448 c.insert(reinterpret_cast<intptr_t>(restCallbacksPool_.GetCallback(i))); | |
| 449 } | |
| 450 | |
| 451 if (c.size() != MAX_REST_CALLBACKS) | |
| 452 { | |
| 453 throw std::runtime_error("The Java plugin has not been properly compiled"); | |
| 454 } | |
| 455 } | |
| 456 | |
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457 Json::Value globalConfiguration; |
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458 |
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459 { |
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460 OrthancString tmp(OrthancPluginGetConfiguration(context)); |
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461 ParseJson(globalConfiguration, tmp.GetValue()); |
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462 } |
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463 |
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464 static const std::string KEY_JAVA = "Java"; |
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465 static const std::string KEY_ENABLED = "Enabled"; |
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466 static const std::string KEY_CLASSPATH = "Classpath"; |
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467 static const std::string KEY_INITIALIZATION_CLASS = "InitializationClass"; |
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468 |
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469 if (!HasOption(globalConfiguration, KEY_JAVA, Json::objectValue, false)) |
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470 { |
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471 OrthancPluginLogInfo(context, "Java plugin is disabled"); |
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472 return 0; |
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473 } |
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474 |
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475 Json::Value javaConfiguration = globalConfiguration[KEY_JAVA]; |
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476 assert(javaConfiguration.isObject()); |
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477 |
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478 if (HasOption(javaConfiguration, KEY_ENABLED, Json::booleanValue, false) && |
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479 !javaConfiguration[KEY_ENABLED].asBool()) |
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480 { |
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481 OrthancPluginLogInfo(context, "Java plugin is disabled"); |
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482 return 0; |
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483 } |
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484 |
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485 java_.reset(new JavaVirtualMachine(GetMandatoryString(javaConfiguration, KEY_CLASSPATH))); |
| 0 | 486 |
| 487 callbacksConfiguration_.reset(new CallbacksConfiguration); | |
| 488 OrthancPluginRegisterOnChangeCallback(context_, OnChangeCallback); | |
| 489 | |
| 490 JavaEnvironment env(*java_); | |
| 491 | |
| 492 { | |
| 493 std::vector<JNINativeMethod> methods; | |
| 494 JNI_LoadNatives(methods); | |
| 495 env.RegisterNatives("be/uclouvain/orthanc/NativeSDK", methods); | |
| 496 } | |
| 497 | |
| 498 { | |
| 499 std::vector<JNINativeMethod> methods; | |
| 500 methods.push_back((JNINativeMethod) { | |
| 501 const_cast<char*>("register"), | |
| 502 const_cast<char*>("(Lbe/uclouvain/orthanc/Callbacks$OnChange;)V"), | |
| 503 (void*) RegisterOnChangeCallback }); | |
| 504 methods.push_back((JNINativeMethod) { | |
| 505 const_cast<char*>("register"), | |
| 506 const_cast<char*>("(Ljava/lang/String;Lbe/uclouvain/orthanc/Callbacks$OnRestRequest;)V"), | |
| 507 (void*) RegisterOnRestRequestCallback }); | |
| 508 env.RegisterNatives("be/uclouvain/orthanc/Callbacks", methods); | |
| 509 } | |
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510 |
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511 if (HasOption(javaConfiguration, KEY_INITIALIZATION_CLASS, Json::stringValue, false)) |
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512 { |
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513 env.FindClass(javaConfiguration[KEY_INITIALIZATION_CLASS].asString()); |
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514 } |
| 0 | 515 } |
| 516 catch (std::runtime_error& e) | |
| 517 { | |
| 518 OrthancPluginLogError(context, e.what()); | |
| 519 return -1; | |
| 520 } | |
| 521 | |
| 522 return 0; | |
| 523 } | |
| 524 | |
| 525 | |
| 526 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
| 527 { | |
| 528 if (java_.get() != NULL) | |
| 529 { | |
| 530 callbacksConfiguration_.reset(NULL); | |
| 531 | |
| 532 try | |
| 533 { | |
| 534 JavaEnvironment env(*java_); | |
| 535 env.RunGarbageCollector(); | |
| 536 } | |
| 537 catch (std::runtime_error& e) | |
| 538 { | |
| 539 OrthancPluginLogError(context_, e.what()); | |
| 540 } | |
| 541 | |
| 542 java_.reset(NULL); | |
| 543 } | |
| 544 } | |
| 545 | |
| 546 | |
| 547 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
| 548 { | |
| 549 return "java"; | |
| 550 } | |
| 551 | |
| 552 | |
| 553 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
| 554 { | |
| 555 return PLUGIN_VERSION; | |
| 556 } | |
| 557 } |