Mercurial > hg > orthanc-java
annotate Plugin/Plugin.cpp @ 16:1be232fa8f33
migration to UCLouvain servers
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 22 Nov 2023 07:55:18 +0100 |
parents | 26c08ff926a3 |
children | 1c407ba1d311 |
rev | line source |
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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 } |