Mercurial > hg > orthanc-stone
annotate Framework/Oracle/ThreadedOracle.cpp @ 1270:2d8ab34c8c91
upgrade to year 2020
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 31 Jan 2020 17:34:29 +0100 |
| parents | 18d53a8b41b7 |
| children | 7ec8fea061b9 8a0a62189f46 |
| rev | line source |
|---|---|
| 748 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 748 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "ThreadedOracle.h" | |
| 23 | |
| 24 #include "GetOrthancImageCommand.h" | |
| 25 #include "GetOrthancWebViewerJpegCommand.h" | |
| 979 | 26 #include "HttpCommand.h" |
| 748 | 27 #include "OrthancRestApiCommand.h" |
| 28 #include "SleepOracleCommand.h" | |
| 29 #include "OracleCommandExceptionMessage.h" | |
| 30 | |
| 31 #include <Core/Compression/GzipCompressor.h> | |
| 32 #include <Core/HttpClient.h> | |
| 33 #include <Core/OrthancException.h> | |
| 34 #include <Core/Toolbox.h> | |
| 35 | |
| 36 | |
| 37 namespace OrthancStone | |
| 38 { | |
| 39 class ThreadedOracle::Item : public Orthanc::IDynamicObject | |
| 40 { | |
| 41 private: | |
| 42 const IObserver& receiver_; | |
| 43 std::auto_ptr<IOracleCommand> command_; | |
| 44 | |
| 45 public: | |
| 46 Item(const IObserver& receiver, | |
| 47 IOracleCommand* command) : | |
| 48 receiver_(receiver), | |
| 49 command_(command) | |
| 50 { | |
| 51 if (command == NULL) | |
| 52 { | |
| 53 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 const IObserver& GetReceiver() const | |
| 58 { | |
| 59 return receiver_; | |
| 60 } | |
| 61 | |
| 62 IOracleCommand& GetCommand() | |
| 63 { | |
| 64 assert(command_.get() != NULL); | |
| 65 return *command_; | |
| 66 } | |
| 67 }; | |
| 68 | |
| 69 | |
| 70 class ThreadedOracle::SleepingCommands : public boost::noncopyable | |
| 71 { | |
| 72 private: | |
| 73 class Item | |
| 74 { | |
| 75 private: | |
| 76 const IObserver& receiver_; | |
| 77 std::auto_ptr<SleepOracleCommand> command_; | |
| 78 boost::posix_time::ptime expiration_; | |
| 79 | |
| 80 public: | |
| 81 Item(const IObserver& receiver, | |
| 82 SleepOracleCommand* command) : | |
| 83 receiver_(receiver), | |
| 84 command_(command) | |
| 85 { | |
| 86 if (command == NULL) | |
| 87 { | |
| 88 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 89 } | |
| 90 | |
|
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91 expiration_ = (boost::posix_time::microsec_clock::local_time() + |
| 748 | 92 boost::posix_time::milliseconds(command_->GetDelay())); |
| 93 } | |
| 94 | |
| 95 const boost::posix_time::ptime& GetExpirationTime() const | |
| 96 { | |
| 97 return expiration_; | |
| 98 } | |
| 99 | |
| 100 void Awake(IMessageEmitter& emitter) | |
| 101 { | |
| 102 assert(command_.get() != NULL); | |
| 103 | |
| 104 SleepOracleCommand::TimeoutMessage message(*command_); | |
| 105 emitter.EmitMessage(receiver_, message); | |
| 106 } | |
| 107 }; | |
| 108 | |
| 109 typedef std::list<Item*> Content; | |
| 110 | |
| 111 boost::mutex mutex_; | |
| 112 Content content_; | |
| 113 | |
| 114 public: | |
| 115 ~SleepingCommands() | |
| 116 { | |
| 117 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) | |
| 118 { | |
| 119 if (*it != NULL) | |
| 120 { | |
| 121 delete *it; | |
| 122 } | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 void Add(const IObserver& receiver, | |
| 127 SleepOracleCommand* command) // Takes ownership | |
| 128 { | |
| 129 boost::mutex::scoped_lock lock(mutex_); | |
| 130 | |
| 131 content_.push_back(new Item(receiver, command)); | |
| 132 } | |
| 133 | |
| 134 void AwakeExpired(IMessageEmitter& emitter) | |
| 135 { | |
| 136 boost::mutex::scoped_lock lock(mutex_); | |
| 137 | |
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138 const boost::posix_time::ptime now = boost::posix_time::microsec_clock::local_time(); |
| 748 | 139 |
| 140 Content stillSleeping; | |
| 141 | |
| 142 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) | |
| 143 { | |
| 144 if (*it != NULL && | |
| 145 (*it)->GetExpirationTime() <= now) | |
| 146 { | |
| 147 (*it)->Awake(emitter); | |
| 148 delete *it; | |
| 149 *it = NULL; | |
| 150 } | |
| 151 else | |
| 152 { | |
| 153 stillSleeping.push_back(*it); | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 // Compact the still-sleeping commands | |
| 158 content_ = stillSleeping; | |
| 159 } | |
| 160 }; | |
| 161 | |
| 162 | |
| 163 static void CopyHttpHeaders(Orthanc::HttpClient& client, | |
| 164 const Orthanc::HttpClient::HttpHeaders& headers) | |
| 165 { | |
| 166 for (Orthanc::HttpClient::HttpHeaders::const_iterator | |
| 167 it = headers.begin(); it != headers.end(); it++ ) | |
| 168 { | |
| 169 client.AddHeader(it->first, it->second); | |
| 170 } | |
| 171 } | |
| 172 | |
| 173 | |
| 174 static void DecodeAnswer(std::string& answer, | |
| 175 const Orthanc::HttpClient::HttpHeaders& headers) | |
| 176 { | |
| 177 Orthanc::HttpCompression contentEncoding = Orthanc::HttpCompression_None; | |
| 178 | |
| 179 for (Orthanc::HttpClient::HttpHeaders::const_iterator it = headers.begin(); | |
| 180 it != headers.end(); ++it) | |
| 181 { | |
| 182 std::string s; | |
| 183 Orthanc::Toolbox::ToLowerCase(s, it->first); | |
| 184 | |
| 185 if (s == "content-encoding") | |
| 186 { | |
| 187 if (it->second == "gzip") | |
| 188 { | |
| 189 contentEncoding = Orthanc::HttpCompression_Gzip; | |
| 190 } | |
| 191 else | |
| 192 { | |
| 193 throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol, | |
| 194 "Unsupported HTTP Content-Encoding: " + it->second); | |
| 195 } | |
| 196 | |
| 197 break; | |
| 198 } | |
| 199 } | |
| 200 | |
| 201 if (contentEncoding == Orthanc::HttpCompression_Gzip) | |
| 202 { | |
| 203 std::string compressed; | |
| 204 answer.swap(compressed); | |
| 205 | |
| 206 Orthanc::GzipCompressor compressor; | |
| 207 compressor.Uncompress(answer, compressed.c_str(), compressed.size()); | |
| 765 | 208 |
| 209 LOG(INFO) << "Uncompressing gzip Encoding: from " << compressed.size() | |
| 210 << " to " << answer.size() << " bytes"; | |
| 748 | 211 } |
| 212 } | |
| 213 | |
| 214 | |
| 215 static void Execute(IMessageEmitter& emitter, | |
| 979 | 216 const IObserver& receiver, |
| 217 const HttpCommand& command) | |
| 218 { | |
| 219 Orthanc::HttpClient client; | |
| 220 client.SetUrl(command.GetUrl()); | |
| 221 client.SetMethod(command.GetMethod()); | |
| 222 client.SetTimeout(command.GetTimeout()); | |
| 223 | |
| 224 CopyHttpHeaders(client, command.GetHttpHeaders()); | |
| 225 | |
| 226 if (command.GetMethod() == Orthanc::HttpMethod_Post || | |
| 227 command.GetMethod() == Orthanc::HttpMethod_Put) | |
| 228 { | |
| 229 client.SetBody(command.GetBody()); | |
| 230 } | |
| 231 | |
| 232 std::string answer; | |
| 233 Orthanc::HttpClient::HttpHeaders answerHeaders; | |
| 234 client.ApplyAndThrowException(answer, answerHeaders); | |
| 235 | |
| 236 DecodeAnswer(answer, answerHeaders); | |
| 237 | |
| 238 HttpCommand::SuccessMessage message(command, answerHeaders, answer); | |
| 239 emitter.EmitMessage(receiver, message); | |
| 240 } | |
| 241 | |
| 242 | |
| 243 static void Execute(IMessageEmitter& emitter, | |
| 748 | 244 const Orthanc::WebServiceParameters& orthanc, |
| 245 const IObserver& receiver, | |
| 246 const OrthancRestApiCommand& command) | |
| 247 { | |
| 248 Orthanc::HttpClient client(orthanc, command.GetUri()); | |
| 249 client.SetMethod(command.GetMethod()); | |
| 250 client.SetTimeout(command.GetTimeout()); | |
| 251 | |
| 252 CopyHttpHeaders(client, command.GetHttpHeaders()); | |
| 253 | |
| 254 if (command.GetMethod() == Orthanc::HttpMethod_Post || | |
| 255 command.GetMethod() == Orthanc::HttpMethod_Put) | |
| 256 { | |
| 257 client.SetBody(command.GetBody()); | |
| 258 } | |
| 259 | |
| 260 std::string answer; | |
| 261 Orthanc::HttpClient::HttpHeaders answerHeaders; | |
| 262 client.ApplyAndThrowException(answer, answerHeaders); | |
| 263 | |
| 264 DecodeAnswer(answer, answerHeaders); | |
| 265 | |
| 266 OrthancRestApiCommand::SuccessMessage message(command, answerHeaders, answer); | |
| 267 emitter.EmitMessage(receiver, message); | |
| 268 } | |
| 269 | |
| 270 | |
| 271 static void Execute(IMessageEmitter& emitter, | |
| 272 const Orthanc::WebServiceParameters& orthanc, | |
| 273 const IObserver& receiver, | |
| 274 const GetOrthancImageCommand& command) | |
| 275 { | |
| 276 Orthanc::HttpClient client(orthanc, command.GetUri()); | |
| 277 client.SetTimeout(command.GetTimeout()); | |
| 278 | |
| 279 CopyHttpHeaders(client, command.GetHttpHeaders()); | |
| 819 | 280 |
| 748 | 281 std::string answer; |
| 282 Orthanc::HttpClient::HttpHeaders answerHeaders; | |
| 283 client.ApplyAndThrowException(answer, answerHeaders); | |
| 284 | |
| 285 DecodeAnswer(answer, answerHeaders); | |
| 286 | |
| 287 command.ProcessHttpAnswer(emitter, receiver, answer, answerHeaders); | |
| 288 } | |
| 289 | |
| 290 | |
| 291 static void Execute(IMessageEmitter& emitter, | |
| 292 const Orthanc::WebServiceParameters& orthanc, | |
| 293 const IObserver& receiver, | |
| 294 const GetOrthancWebViewerJpegCommand& command) | |
| 295 { | |
| 296 Orthanc::HttpClient client(orthanc, command.GetUri()); | |
| 297 client.SetTimeout(command.GetTimeout()); | |
| 298 | |
| 299 CopyHttpHeaders(client, command.GetHttpHeaders()); | |
| 300 | |
| 301 std::string answer; | |
| 302 Orthanc::HttpClient::HttpHeaders answerHeaders; | |
| 303 client.ApplyAndThrowException(answer, answerHeaders); | |
| 304 | |
| 305 DecodeAnswer(answer, answerHeaders); | |
| 306 | |
| 307 command.ProcessHttpAnswer(emitter, receiver, answer); | |
| 308 } | |
| 309 | |
| 310 | |
| 311 void ThreadedOracle::Step() | |
| 312 { | |
| 313 std::auto_ptr<Orthanc::IDynamicObject> object(queue_.Dequeue(100)); | |
| 314 | |
| 315 if (object.get() != NULL) | |
| 316 { | |
| 317 Item& item = dynamic_cast<Item&>(*object); | |
| 318 | |
| 319 try | |
| 320 { | |
| 321 switch (item.GetCommand().GetType()) | |
| 322 { | |
| 323 case IOracleCommand::Type_Sleep: | |
| 324 { | |
| 325 SleepOracleCommand& command = dynamic_cast<SleepOracleCommand&>(item.GetCommand()); | |
| 326 | |
| 327 std::auto_ptr<SleepOracleCommand> copy(new SleepOracleCommand(command.GetDelay())); | |
| 328 | |
| 329 if (command.HasPayload()) | |
| 330 { | |
| 331 copy->SetPayload(command.ReleasePayload()); | |
| 332 } | |
| 333 | |
| 334 sleepingCommands_->Add(item.GetReceiver(), copy.release()); | |
| 335 | |
| 336 break; | |
| 337 } | |
| 338 | |
| 979 | 339 case IOracleCommand::Type_Http: |
| 340 Execute(emitter_, item.GetReceiver(), | |
| 341 dynamic_cast<const HttpCommand&>(item.GetCommand())); | |
| 342 break; | |
| 343 | |
| 748 | 344 case IOracleCommand::Type_OrthancRestApi: |
| 345 Execute(emitter_, orthanc_, item.GetReceiver(), | |
| 346 dynamic_cast<const OrthancRestApiCommand&>(item.GetCommand())); | |
| 347 break; | |
| 348 | |
| 349 case IOracleCommand::Type_GetOrthancImage: | |
| 350 Execute(emitter_, orthanc_, item.GetReceiver(), | |
| 351 dynamic_cast<const GetOrthancImageCommand&>(item.GetCommand())); | |
| 352 break; | |
| 353 | |
| 354 case IOracleCommand::Type_GetOrthancWebViewerJpeg: | |
| 355 Execute(emitter_, orthanc_, item.GetReceiver(), | |
| 356 dynamic_cast<const GetOrthancWebViewerJpegCommand&>(item.GetCommand())); | |
| 357 break; | |
| 358 | |
| 359 default: | |
| 360 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 361 } | |
| 362 } | |
| 363 catch (Orthanc::OrthancException& e) | |
| 364 { | |
| 365 LOG(ERROR) << "Exception within the oracle: " << e.What(); | |
| 366 emitter_.EmitMessage(item.GetReceiver(), OracleCommandExceptionMessage(item.GetCommand(), e)); | |
| 367 } | |
| 368 catch (...) | |
| 369 { | |
| 370 LOG(ERROR) << "Threaded exception within the oracle"; | |
| 371 emitter_.EmitMessage(item.GetReceiver(), OracleCommandExceptionMessage | |
| 372 (item.GetCommand(), Orthanc::ErrorCode_InternalError)); | |
| 373 } | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 | |
| 378 void ThreadedOracle::Worker(ThreadedOracle* that) | |
| 379 { | |
| 380 assert(that != NULL); | |
| 381 | |
| 382 for (;;) | |
| 383 { | |
| 384 { | |
| 385 boost::mutex::scoped_lock lock(that->mutex_); | |
| 386 if (that->state_ != State_Running) | |
| 387 { | |
| 388 return; | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 that->Step(); | |
| 393 } | |
| 394 } | |
| 395 | |
| 396 | |
| 397 void ThreadedOracle::SleepingWorker(ThreadedOracle* that) | |
| 398 { | |
| 399 assert(that != NULL); | |
| 400 | |
| 401 for (;;) | |
| 402 { | |
| 403 { | |
| 404 boost::mutex::scoped_lock lock(that->mutex_); | |
| 405 if (that->state_ != State_Running) | |
| 406 { | |
| 407 return; | |
| 408 } | |
| 409 } | |
| 410 | |
| 411 that->sleepingCommands_->AwakeExpired(that->emitter_); | |
| 412 | |
| 413 boost::this_thread::sleep(boost::posix_time::milliseconds(that->sleepingTimeResolution_)); | |
| 414 } | |
| 415 } | |
| 416 | |
| 417 | |
| 418 void ThreadedOracle::StopInternal() | |
| 419 { | |
| 420 { | |
| 421 boost::mutex::scoped_lock lock(mutex_); | |
| 422 | |
| 423 if (state_ == State_Setup || | |
| 424 state_ == State_Stopped) | |
| 425 { | |
| 426 return; | |
| 427 } | |
| 428 else | |
| 429 { | |
| 430 state_ = State_Stopped; | |
| 431 } | |
| 432 } | |
| 433 | |
| 434 if (sleepingWorker_.joinable()) | |
| 435 { | |
| 436 sleepingWorker_.join(); | |
| 437 } | |
| 438 | |
| 439 for (size_t i = 0; i < workers_.size(); i++) | |
| 440 { | |
| 441 if (workers_[i] != NULL) | |
| 442 { | |
| 443 if (workers_[i]->joinable()) | |
| 444 { | |
| 445 workers_[i]->join(); | |
| 446 } | |
| 447 | |
| 448 delete workers_[i]; | |
| 449 } | |
| 450 } | |
| 451 } | |
| 452 | |
| 453 | |
| 454 ThreadedOracle::ThreadedOracle(IMessageEmitter& emitter) : | |
| 455 emitter_(emitter), | |
| 456 state_(State_Setup), | |
| 457 workers_(4), | |
| 458 sleepingCommands_(new SleepingCommands), | |
| 459 sleepingTimeResolution_(50) // By default, time resolution of 50ms | |
| 460 { | |
| 461 } | |
| 462 | |
| 463 | |
| 765 | 464 ThreadedOracle::~ThreadedOracle() |
| 465 { | |
| 466 if (state_ == State_Running) | |
| 467 { | |
| 468 LOG(ERROR) << "The threaded oracle is still running, explicit call to " | |
| 469 << "Stop() is mandatory to avoid crashes"; | |
| 470 } | |
| 471 | |
| 472 try | |
| 473 { | |
| 474 StopInternal(); | |
| 475 } | |
| 476 catch (Orthanc::OrthancException& e) | |
| 477 { | |
| 478 LOG(ERROR) << "Exception while stopping the threaded oracle: " << e.What(); | |
| 479 } | |
| 480 catch (...) | |
| 481 { | |
| 482 LOG(ERROR) << "Native exception while stopping the threaded oracle"; | |
| 483 } | |
| 484 } | |
| 485 | |
| 486 | |
| 748 | 487 void ThreadedOracle::SetOrthancParameters(const Orthanc::WebServiceParameters& orthanc) |
| 488 { | |
| 489 boost::mutex::scoped_lock lock(mutex_); | |
| 490 | |
| 491 if (state_ != State_Setup) | |
| 492 { | |
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493 LOG(ERROR) << "ThreadedOracle::SetOrthancParameters(): (state_ != State_Setup)"; |
| 748 | 494 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 495 } | |
| 496 else | |
| 497 { | |
| 498 orthanc_ = orthanc; | |
| 499 } | |
| 500 } | |
| 501 | |
| 502 | |
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503 void ThreadedOracle::SetThreadsCount(unsigned int count) |
| 748 | 504 { |
| 505 boost::mutex::scoped_lock lock(mutex_); | |
| 506 | |
| 507 if (count <= 0) | |
| 508 { | |
| 509 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 510 } | |
| 511 else if (state_ != State_Setup) | |
| 512 { | |
|
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parents:
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changeset
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513 LOG(ERROR) << "ThreadedOracle::SetThreadsCount(): (state_ != State_Setup)"; |
| 748 | 514 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 515 } | |
| 516 else | |
| 517 { | |
| 518 workers_.resize(count); | |
| 519 } | |
| 520 } | |
| 521 | |
| 522 | |
| 523 void ThreadedOracle::SetSleepingTimeResolution(unsigned int milliseconds) | |
| 524 { | |
| 525 boost::mutex::scoped_lock lock(mutex_); | |
| 526 | |
| 527 if (milliseconds <= 0) | |
| 528 { | |
| 529 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 530 } | |
| 531 else if (state_ != State_Setup) | |
| 532 { | |
|
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a7351ad54960
Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents:
819
diff
changeset
|
533 LOG(ERROR) << "ThreadedOracle::SetSleepingTimeResolution(): (state_ != State_Setup)"; |
| 748 | 534 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 535 } | |
| 536 else | |
| 537 { | |
| 538 sleepingTimeResolution_ = milliseconds; | |
| 539 } | |
| 540 } | |
| 541 | |
| 542 | |
| 543 void ThreadedOracle::Start() | |
| 544 { | |
| 545 boost::mutex::scoped_lock lock(mutex_); | |
| 546 | |
| 547 if (state_ != State_Setup) | |
| 548 { | |
|
956
a7351ad54960
Made IsContextLost automatically set the flag by checking with the emscripten
Benjamin Golinvaux <bgo@osimis.io>
parents:
819
diff
changeset
|
549 LOG(ERROR) << "ThreadedOracle::Start(): (state_ != State_Setup)"; |
| 748 | 550 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 551 } | |
| 552 else | |
| 553 { | |
| 554 state_ = State_Running; | |
| 555 | |
| 556 for (unsigned int i = 0; i < workers_.size(); i++) | |
| 557 { | |
| 558 workers_[i] = new boost::thread(Worker, this); | |
| 559 } | |
| 560 | |
| 561 sleepingWorker_ = boost::thread(SleepingWorker, this); | |
| 562 } | |
| 563 } | |
| 564 | |
| 565 | |
| 566 void ThreadedOracle::Schedule(const IObserver& receiver, | |
| 567 IOracleCommand* command) | |
| 568 { | |
| 569 queue_.Enqueue(new Item(receiver, command)); | |
| 570 } | |
| 571 } |