Mercurial > hg > orthanc
annotate OrthancServer/Scheduler/ServerScheduler.cpp @ 2447:878b59270859
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 02 Jan 2018 09:35:07 +0100 |
| parents | a3a65de1840f |
| children |
| rev | line source |
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| 781 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
| 781 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU General Public License as | |
| 9 * published by the Free Software Foundation, either version 3 of the | |
| 10 * License, or (at your option) any later version. | |
| 11 * | |
| 12 * In addition, as a special exception, the copyright holders of this | |
| 13 * program give permission to link the code of its release with the | |
| 14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 15 * that use the same license as the "OpenSSL" library), and distribute | |
| 16 * the linked executables. You must obey the GNU General Public License | |
| 17 * in all respects for all of the code used other than "OpenSSL". If you | |
| 18 * modify file(s) with this exception, you may extend this exception to | |
| 19 * your version of the file(s), but you are not obligated to do so. If | |
| 20 * you do not wish to do so, delete this exception statement from your | |
| 21 * version. If you delete this exception statement from all source files | |
| 22 * in the program, then also delete it here. | |
| 23 * | |
| 24 * This program is distributed in the hope that it will be useful, but | |
| 25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 27 * General Public License for more details. | |
| 28 * | |
| 29 * You should have received a copy of the GNU General Public License | |
| 30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 31 **/ | |
| 32 | |
| 33 | |
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34 #include "../PrecompiledHeadersServer.h" |
| 781 | 35 #include "ServerScheduler.h" |
| 36 | |
| 37 #include "../../Core/OrthancException.h" | |
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38 #include "../../Core/Logging.h" |
| 781 | 39 |
| 40 namespace Orthanc | |
| 41 { | |
| 42 namespace | |
| 43 { | |
| 44 // Anonymous namespace to avoid clashes between compilation modules | |
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45 class Sink : public IServerCommand |
| 781 | 46 { |
| 47 private: | |
| 48 ListOfStrings& target_; | |
| 49 | |
| 50 public: | |
| 2223 | 51 explicit Sink(ListOfStrings& target) : target_(target) |
| 781 | 52 { |
| 53 } | |
| 54 | |
| 55 virtual bool Apply(ListOfStrings& outputs, | |
| 56 const ListOfStrings& inputs) | |
| 57 { | |
| 58 for (ListOfStrings::const_iterator | |
| 1304 | 59 it = inputs.begin(); it != inputs.end(); ++it) |
| 781 | 60 { |
| 61 target_.push_back(*it); | |
| 62 } | |
| 63 | |
| 64 return true; | |
| 65 } | |
| 66 }; | |
| 67 } | |
| 68 | |
| 69 | |
| 70 ServerScheduler::JobInfo& ServerScheduler::GetJobInfo(const std::string& jobId) | |
| 71 { | |
| 72 Jobs::iterator info = jobs_.find(jobId); | |
| 73 | |
| 74 if (info == jobs_.end()) | |
| 75 { | |
| 76 throw OrthancException(ErrorCode_InternalError); | |
| 77 } | |
| 78 | |
| 79 return info->second; | |
| 80 } | |
| 81 | |
| 82 | |
| 83 void ServerScheduler::SignalSuccess(const std::string& jobId) | |
| 84 { | |
| 85 boost::mutex::scoped_lock lock(mutex_); | |
| 86 | |
| 87 JobInfo& info = GetJobInfo(jobId); | |
| 88 info.success_++; | |
| 89 | |
| 90 assert(info.failures_ == 0); | |
| 91 | |
| 92 if (info.success_ >= info.size_) | |
| 93 { | |
| 94 if (info.watched_) | |
| 95 { | |
| 96 watchedJobStatus_[jobId] = JobStatus_Success; | |
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97 watchedJobFinished_.notify_all(); |
| 781 | 98 } |
| 99 | |
| 100 LOG(INFO) << "Job successfully finished (" << info.description_ << ")"; | |
| 101 jobs_.erase(jobId); | |
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102 |
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103 availableJob_.Release(); |
| 781 | 104 } |
| 105 } | |
| 106 | |
| 107 | |
| 108 void ServerScheduler::SignalFailure(const std::string& jobId) | |
| 109 { | |
| 110 boost::mutex::scoped_lock lock(mutex_); | |
| 111 | |
| 112 JobInfo& info = GetJobInfo(jobId); | |
| 113 info.failures_++; | |
| 114 | |
| 115 if (info.success_ + info.failures_ >= info.size_) | |
| 116 { | |
| 117 if (info.watched_) | |
| 118 { | |
| 119 watchedJobStatus_[jobId] = JobStatus_Failure; | |
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120 watchedJobFinished_.notify_all(); |
| 781 | 121 } |
| 122 | |
| 123 LOG(ERROR) << "Job has failed (" << info.description_ << ")"; | |
| 124 jobs_.erase(jobId); | |
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125 |
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126 availableJob_.Release(); |
| 781 | 127 } |
| 128 } | |
| 129 | |
| 130 | |
| 131 void ServerScheduler::Worker(ServerScheduler* that) | |
| 132 { | |
| 133 static const int32_t TIMEOUT = 100; | |
| 134 | |
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135 LOG(WARNING) << "The server scheduler has started"; |
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136 |
| 781 | 137 while (!that->finish_) |
| 138 { | |
| 139 std::auto_ptr<IDynamicObject> object(that->queue_.Dequeue(TIMEOUT)); | |
| 140 if (object.get() != NULL) | |
| 141 { | |
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142 ServerCommandInstance& filter = dynamic_cast<ServerCommandInstance&>(*object); |
| 781 | 143 |
| 144 // Skip the execution of this filter if its parent job has | |
| 145 // previously failed. | |
| 146 bool jobHasFailed; | |
| 147 { | |
| 148 boost::mutex::scoped_lock lock(that->mutex_); | |
| 149 JobInfo& info = that->GetJobInfo(filter.GetJobId()); | |
| 150 jobHasFailed = (info.failures_ > 0 || info.cancel_); | |
| 151 } | |
| 152 | |
| 153 if (jobHasFailed) | |
| 154 { | |
| 155 that->SignalFailure(filter.GetJobId()); | |
| 156 } | |
| 157 else | |
| 158 { | |
| 159 filter.Execute(*that); | |
| 160 } | |
| 161 } | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 | |
| 166 void ServerScheduler::SubmitInternal(ServerJob& job, | |
| 167 bool watched) | |
| 168 { | |
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169 availableJob_.Acquire(); |
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170 |
| 781 | 171 boost::mutex::scoped_lock lock(mutex_); |
| 172 | |
| 173 JobInfo info; | |
| 174 info.size_ = job.Submit(queue_, *this); | |
| 175 info.cancel_ = false; | |
| 176 info.success_ = 0; | |
| 177 info.failures_ = 0; | |
| 178 info.description_ = job.GetDescription(); | |
| 179 info.watched_ = watched; | |
| 180 | |
| 181 assert(info.size_ > 0); | |
| 182 | |
| 183 if (watched) | |
| 184 { | |
| 185 watchedJobStatus_[job.GetId()] = JobStatus_Running; | |
| 186 } | |
| 187 | |
| 188 jobs_[job.GetId()] = info; | |
| 189 | |
| 190 LOG(INFO) << "New job submitted (" << job.description_ << ")"; | |
| 191 } | |
| 192 | |
| 193 | |
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194 ServerScheduler::ServerScheduler(unsigned int maxJobs) : availableJob_(maxJobs) |
| 781 | 195 { |
| 2063 | 196 if (maxJobs == 0) |
| 197 { | |
| 198 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 199 } | |
| 200 | |
| 781 | 201 finish_ = false; |
| 202 worker_ = boost::thread(Worker, this); | |
| 203 } | |
| 204 | |
| 205 | |
| 206 ServerScheduler::~ServerScheduler() | |
| 207 { | |
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208 if (!finish_) |
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209 { |
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210 LOG(ERROR) << "INTERNAL ERROR: ServerScheduler::Finalize() should be invoked manually to avoid mess in the destruction order!"; |
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211 Stop(); |
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212 } |
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213 } |
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214 |
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215 |
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216 void ServerScheduler::Stop() |
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217 { |
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218 if (!finish_) |
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219 { |
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220 finish_ = true; |
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221 |
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222 if (worker_.joinable()) |
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223 { |
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224 worker_.join(); |
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225 } |
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226 } |
| 781 | 227 } |
| 228 | |
| 229 | |
| 230 void ServerScheduler::Submit(ServerJob& job) | |
| 231 { | |
| 232 if (job.filters_.empty()) | |
| 233 { | |
| 234 return; | |
| 235 } | |
| 236 | |
| 237 SubmitInternal(job, false); | |
| 238 } | |
| 239 | |
| 240 | |
| 241 bool ServerScheduler::SubmitAndWait(ListOfStrings& outputs, | |
| 242 ServerJob& job) | |
| 243 { | |
| 244 std::string jobId = job.GetId(); | |
| 245 | |
| 246 outputs.clear(); | |
| 247 | |
| 248 if (job.filters_.empty()) | |
| 249 { | |
| 250 return true; | |
| 251 } | |
| 252 | |
| 253 // Add a sink filter to collect all the results of the filters | |
| 254 // that have no next filter. | |
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255 ServerCommandInstance& sink = job.AddCommand(new Sink(outputs)); |
| 781 | 256 |
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257 for (std::list<ServerCommandInstance*>::iterator |
| 1304 | 258 it = job.filters_.begin(); it != job.filters_.end(); ++it) |
| 781 | 259 { |
| 260 if ((*it) != &sink && | |
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261 (*it)->IsConnectedToSink()) |
| 781 | 262 { |
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263 (*it)->ConnectOutput(sink); |
| 781 | 264 } |
| 265 } | |
| 266 | |
| 267 // Submit the job | |
| 268 SubmitInternal(job, true); | |
| 269 | |
| 270 // Wait for the job to complete (either success or failure) | |
| 271 JobStatus status; | |
| 272 | |
| 273 { | |
| 274 boost::mutex::scoped_lock lock(mutex_); | |
| 275 | |
| 276 assert(watchedJobStatus_.find(jobId) != watchedJobStatus_.end()); | |
| 277 | |
| 278 while (watchedJobStatus_[jobId] == JobStatus_Running) | |
| 279 { | |
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280 watchedJobFinished_.wait(lock); |
| 781 | 281 } |
| 282 | |
| 283 status = watchedJobStatus_[jobId]; | |
| 284 watchedJobStatus_.erase(jobId); | |
| 285 } | |
| 286 | |
| 287 return (status == JobStatus_Success); | |
| 288 } | |
| 289 | |
| 290 | |
| 999 | 291 bool ServerScheduler::SubmitAndWait(ServerJob& job) |
| 292 { | |
| 293 ListOfStrings ignoredSink; | |
| 294 return SubmitAndWait(ignoredSink, job); | |
| 295 } | |
| 296 | |
| 297 | |
| 781 | 298 bool ServerScheduler::IsRunning(const std::string& jobId) |
| 299 { | |
| 300 boost::mutex::scoped_lock lock(mutex_); | |
| 301 return jobs_.find(jobId) != jobs_.end(); | |
| 302 } | |
| 303 | |
| 304 | |
| 305 void ServerScheduler::Cancel(const std::string& jobId) | |
| 306 { | |
| 307 boost::mutex::scoped_lock lock(mutex_); | |
| 308 | |
| 309 Jobs::iterator job = jobs_.find(jobId); | |
| 310 | |
| 311 if (job != jobs_.end()) | |
| 312 { | |
| 313 job->second.cancel_ = true; | |
| 314 LOG(WARNING) << "Canceling a job (" << job->second.description_ << ")"; | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 | |
| 319 float ServerScheduler::GetProgress(const std::string& jobId) | |
| 320 { | |
| 321 boost::mutex::scoped_lock lock(mutex_); | |
| 322 | |
| 323 Jobs::iterator job = jobs_.find(jobId); | |
| 324 | |
| 325 if (job == jobs_.end() || | |
| 326 job->second.size_ == 0 /* should never happen */) | |
| 327 { | |
| 328 // This job is not running | |
| 329 return 1; | |
| 330 } | |
| 331 | |
| 332 if (job->second.failures_ != 0) | |
| 333 { | |
| 334 return 1; | |
| 335 } | |
| 336 | |
| 337 if (job->second.size_ == 1) | |
| 338 { | |
| 1545 | 339 return static_cast<float>(job->second.success_); |
| 781 | 340 } |
| 341 | |
| 342 return (static_cast<float>(job->second.success_) / | |
| 343 static_cast<float>(job->second.size_ - 1)); | |
| 344 } | |
| 345 | |
| 346 | |
| 347 void ServerScheduler::GetListOfJobs(ListOfStrings& jobs) | |
| 348 { | |
| 349 boost::mutex::scoped_lock lock(mutex_); | |
| 350 | |
| 351 jobs.clear(); | |
| 352 | |
| 353 for (Jobs::const_iterator | |
| 1304 | 354 it = jobs_.begin(); it != jobs_.end(); ++it) |
| 781 | 355 { |
| 356 jobs.push_back(it->first); | |
| 357 } | |
| 358 } | |
| 359 } |