Mercurial > hg > orthanc
annotate OrthancServer/Scheduler/ServerScheduler.cpp @ 1687:4d80fc990dae
refactoring
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 07 Oct 2015 14:29:09 +0200 |
| parents | 0a2ad4a6858f |
| children | b1291df2f780 |
| rev | line source |
|---|---|
| 781 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
| 781 | 5 * |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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33 #include "../PrecompiledHeadersServer.h" |
| 781 | 34 #include "ServerScheduler.h" |
| 35 | |
| 36 #include "../../Core/OrthancException.h" | |
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37 #include "../../Core/Logging.h" |
| 781 | 38 |
| 39 namespace Orthanc | |
| 40 { | |
| 41 namespace | |
| 42 { | |
| 43 // Anonymous namespace to avoid clashes between compilation modules | |
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44 class Sink : public IServerCommand |
| 781 | 45 { |
| 46 private: | |
| 47 ListOfStrings& target_; | |
| 48 | |
| 49 public: | |
| 50 Sink(ListOfStrings& target) : target_(target) | |
| 51 { | |
| 52 } | |
| 53 | |
| 54 virtual bool Apply(ListOfStrings& outputs, | |
| 55 const ListOfStrings& inputs) | |
| 56 { | |
| 57 for (ListOfStrings::const_iterator | |
| 1304 | 58 it = inputs.begin(); it != inputs.end(); ++it) |
| 781 | 59 { |
| 60 target_.push_back(*it); | |
| 61 } | |
| 62 | |
| 63 return true; | |
| 64 } | |
| 65 }; | |
| 66 } | |
| 67 | |
| 68 | |
| 69 ServerScheduler::JobInfo& ServerScheduler::GetJobInfo(const std::string& jobId) | |
| 70 { | |
| 71 Jobs::iterator info = jobs_.find(jobId); | |
| 72 | |
| 73 if (info == jobs_.end()) | |
| 74 { | |
| 75 throw OrthancException(ErrorCode_InternalError); | |
| 76 } | |
| 77 | |
| 78 return info->second; | |
| 79 } | |
| 80 | |
| 81 | |
| 82 void ServerScheduler::SignalSuccess(const std::string& jobId) | |
| 83 { | |
| 84 boost::mutex::scoped_lock lock(mutex_); | |
| 85 | |
| 86 JobInfo& info = GetJobInfo(jobId); | |
| 87 info.success_++; | |
| 88 | |
| 89 assert(info.failures_ == 0); | |
| 90 | |
| 91 if (info.success_ >= info.size_) | |
| 92 { | |
| 93 if (info.watched_) | |
| 94 { | |
| 95 watchedJobStatus_[jobId] = JobStatus_Success; | |
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96 watchedJobFinished_.notify_all(); |
| 781 | 97 } |
| 98 | |
| 99 LOG(INFO) << "Job successfully finished (" << info.description_ << ")"; | |
| 100 jobs_.erase(jobId); | |
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101 |
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102 availableJob_.Release(); |
| 781 | 103 } |
| 104 } | |
| 105 | |
| 106 | |
| 107 void ServerScheduler::SignalFailure(const std::string& jobId) | |
| 108 { | |
| 109 boost::mutex::scoped_lock lock(mutex_); | |
| 110 | |
| 111 JobInfo& info = GetJobInfo(jobId); | |
| 112 info.failures_++; | |
| 113 | |
| 114 if (info.success_ + info.failures_ >= info.size_) | |
| 115 { | |
| 116 if (info.watched_) | |
| 117 { | |
| 118 watchedJobStatus_[jobId] = JobStatus_Failure; | |
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119 watchedJobFinished_.notify_all(); |
| 781 | 120 } |
| 121 | |
| 122 LOG(ERROR) << "Job has failed (" << info.description_ << ")"; | |
| 123 jobs_.erase(jobId); | |
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124 |
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125 availableJob_.Release(); |
| 781 | 126 } |
| 127 } | |
| 128 | |
| 129 | |
| 130 void ServerScheduler::Worker(ServerScheduler* that) | |
| 131 { | |
| 132 static const int32_t TIMEOUT = 100; | |
| 133 | |
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134 LOG(WARNING) << "The server scheduler has started"; |
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135 |
| 781 | 136 while (!that->finish_) |
| 137 { | |
| 138 std::auto_ptr<IDynamicObject> object(that->queue_.Dequeue(TIMEOUT)); | |
| 139 if (object.get() != NULL) | |
| 140 { | |
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141 ServerCommandInstance& filter = dynamic_cast<ServerCommandInstance&>(*object); |
| 781 | 142 |
| 143 // Skip the execution of this filter if its parent job has | |
| 144 // previously failed. | |
| 145 bool jobHasFailed; | |
| 146 { | |
| 147 boost::mutex::scoped_lock lock(that->mutex_); | |
| 148 JobInfo& info = that->GetJobInfo(filter.GetJobId()); | |
| 149 jobHasFailed = (info.failures_ > 0 || info.cancel_); | |
| 150 } | |
| 151 | |
| 152 if (jobHasFailed) | |
| 153 { | |
| 154 that->SignalFailure(filter.GetJobId()); | |
| 155 } | |
| 156 else | |
| 157 { | |
| 158 filter.Execute(*that); | |
| 159 } | |
| 160 } | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 | |
| 165 void ServerScheduler::SubmitInternal(ServerJob& job, | |
| 166 bool watched) | |
| 167 { | |
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168 availableJob_.Acquire(); |
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169 |
| 781 | 170 boost::mutex::scoped_lock lock(mutex_); |
| 171 | |
| 172 JobInfo info; | |
| 173 info.size_ = job.Submit(queue_, *this); | |
| 174 info.cancel_ = false; | |
| 175 info.success_ = 0; | |
| 176 info.failures_ = 0; | |
| 177 info.description_ = job.GetDescription(); | |
| 178 info.watched_ = watched; | |
| 179 | |
| 180 assert(info.size_ > 0); | |
| 181 | |
| 182 if (watched) | |
| 183 { | |
| 184 watchedJobStatus_[job.GetId()] = JobStatus_Running; | |
| 185 } | |
| 186 | |
| 187 jobs_[job.GetId()] = info; | |
| 188 | |
| 189 LOG(INFO) << "New job submitted (" << job.description_ << ")"; | |
| 190 } | |
| 191 | |
| 192 | |
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193 ServerScheduler::ServerScheduler(unsigned int maxJobs) : availableJob_(maxJobs) |
| 781 | 194 { |
| 195 finish_ = false; | |
| 196 worker_ = boost::thread(Worker, this); | |
| 197 } | |
| 198 | |
| 199 | |
| 200 ServerScheduler::~ServerScheduler() | |
| 201 { | |
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202 if (!finish_) |
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203 { |
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204 LOG(ERROR) << "INTERNAL ERROR: ServerScheduler::Finalize() should be invoked manually to avoid mess in the destruction order!"; |
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205 Stop(); |
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206 } |
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207 } |
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208 |
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209 |
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210 void ServerScheduler::Stop() |
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211 { |
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212 if (!finish_) |
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213 { |
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214 finish_ = true; |
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215 |
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216 if (worker_.joinable()) |
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217 { |
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218 worker_.join(); |
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219 } |
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220 } |
| 781 | 221 } |
| 222 | |
| 223 | |
| 224 void ServerScheduler::Submit(ServerJob& job) | |
| 225 { | |
| 226 if (job.filters_.empty()) | |
| 227 { | |
| 228 return; | |
| 229 } | |
| 230 | |
| 231 SubmitInternal(job, false); | |
| 232 } | |
| 233 | |
| 234 | |
| 235 bool ServerScheduler::SubmitAndWait(ListOfStrings& outputs, | |
| 236 ServerJob& job) | |
| 237 { | |
| 238 std::string jobId = job.GetId(); | |
| 239 | |
| 240 outputs.clear(); | |
| 241 | |
| 242 if (job.filters_.empty()) | |
| 243 { | |
| 244 return true; | |
| 245 } | |
| 246 | |
| 247 // Add a sink filter to collect all the results of the filters | |
| 248 // that have no next filter. | |
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249 ServerCommandInstance& sink = job.AddCommand(new Sink(outputs)); |
| 781 | 250 |
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251 for (std::list<ServerCommandInstance*>::iterator |
| 1304 | 252 it = job.filters_.begin(); it != job.filters_.end(); ++it) |
| 781 | 253 { |
| 254 if ((*it) != &sink && | |
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255 (*it)->IsConnectedToSink()) |
| 781 | 256 { |
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257 (*it)->ConnectOutput(sink); |
| 781 | 258 } |
| 259 } | |
| 260 | |
| 261 // Submit the job | |
| 262 SubmitInternal(job, true); | |
| 263 | |
| 264 // Wait for the job to complete (either success or failure) | |
| 265 JobStatus status; | |
| 266 | |
| 267 { | |
| 268 boost::mutex::scoped_lock lock(mutex_); | |
| 269 | |
| 270 assert(watchedJobStatus_.find(jobId) != watchedJobStatus_.end()); | |
| 271 | |
| 272 while (watchedJobStatus_[jobId] == JobStatus_Running) | |
| 273 { | |
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274 watchedJobFinished_.wait(lock); |
| 781 | 275 } |
| 276 | |
| 277 status = watchedJobStatus_[jobId]; | |
| 278 watchedJobStatus_.erase(jobId); | |
| 279 } | |
| 280 | |
| 281 return (status == JobStatus_Success); | |
| 282 } | |
| 283 | |
| 284 | |
| 999 | 285 bool ServerScheduler::SubmitAndWait(ServerJob& job) |
| 286 { | |
| 287 ListOfStrings ignoredSink; | |
| 288 return SubmitAndWait(ignoredSink, job); | |
| 289 } | |
| 290 | |
| 291 | |
| 781 | 292 bool ServerScheduler::IsRunning(const std::string& jobId) |
| 293 { | |
| 294 boost::mutex::scoped_lock lock(mutex_); | |
| 295 return jobs_.find(jobId) != jobs_.end(); | |
| 296 } | |
| 297 | |
| 298 | |
| 299 void ServerScheduler::Cancel(const std::string& jobId) | |
| 300 { | |
| 301 boost::mutex::scoped_lock lock(mutex_); | |
| 302 | |
| 303 Jobs::iterator job = jobs_.find(jobId); | |
| 304 | |
| 305 if (job != jobs_.end()) | |
| 306 { | |
| 307 job->second.cancel_ = true; | |
| 308 LOG(WARNING) << "Canceling a job (" << job->second.description_ << ")"; | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 | |
| 313 float ServerScheduler::GetProgress(const std::string& jobId) | |
| 314 { | |
| 315 boost::mutex::scoped_lock lock(mutex_); | |
| 316 | |
| 317 Jobs::iterator job = jobs_.find(jobId); | |
| 318 | |
| 319 if (job == jobs_.end() || | |
| 320 job->second.size_ == 0 /* should never happen */) | |
| 321 { | |
| 322 // This job is not running | |
| 323 return 1; | |
| 324 } | |
| 325 | |
| 326 if (job->second.failures_ != 0) | |
| 327 { | |
| 328 return 1; | |
| 329 } | |
| 330 | |
| 331 if (job->second.size_ == 1) | |
| 332 { | |
| 1545 | 333 return static_cast<float>(job->second.success_); |
| 781 | 334 } |
| 335 | |
| 336 return (static_cast<float>(job->second.success_) / | |
| 337 static_cast<float>(job->second.size_ - 1)); | |
| 338 } | |
| 339 | |
| 340 | |
| 341 void ServerScheduler::GetListOfJobs(ListOfStrings& jobs) | |
| 342 { | |
| 343 boost::mutex::scoped_lock lock(mutex_); | |
| 344 | |
| 345 jobs.clear(); | |
| 346 | |
| 347 for (Jobs::const_iterator | |
| 1304 | 348 it = jobs_.begin(); it != jobs_.end(); ++it) |
| 781 | 349 { |
| 350 jobs.push_back(it->first); | |
| 351 } | |
| 352 } | |
| 353 } |