Mercurial > hg > orthanc
annotate OrthancServer/Scheduler/ServerScheduler.cpp @ 995:8c67382f44a7 lua-scripting
limit number of jobs in the scheduler
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 03 Jul 2014 15:58:53 +0200 |
| parents | c9cdd53a6b31 |
| children | db18c071fbd7 |
| rev | line source |
|---|---|
| 781 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, | |
| 4 * Belgium | |
| 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 | |
| 33 #include "ServerScheduler.h" | |
| 34 | |
| 35 #include "../../Core/OrthancException.h" | |
| 36 | |
| 37 #include <glog/logging.h> | |
| 38 | |
| 39 namespace Orthanc | |
| 40 { | |
| 41 namespace | |
| 42 { | |
| 43 // Anonymous namespace to avoid clashes between compilation modules | |
| 44 class Sink : public IServerFilter | |
| 45 { | |
| 46 private: | |
| 47 ListOfStrings& target_; | |
| 48 | |
| 49 public: | |
| 50 Sink(ListOfStrings& target) : target_(target) | |
| 51 { | |
| 52 } | |
| 53 | |
| 54 virtual bool SendOutputsToSink() const | |
| 55 { | |
| 56 return false; | |
| 57 } | |
| 58 | |
| 59 virtual bool Apply(ListOfStrings& outputs, | |
| 60 const ListOfStrings& inputs) | |
| 61 { | |
| 62 for (ListOfStrings::const_iterator | |
| 63 it = inputs.begin(); it != inputs.end(); it++) | |
| 64 { | |
| 65 target_.push_back(*it); | |
| 66 } | |
| 67 | |
| 68 return true; | |
| 69 } | |
| 70 }; | |
| 71 } | |
| 72 | |
| 73 | |
| 74 ServerScheduler::JobInfo& ServerScheduler::GetJobInfo(const std::string& jobId) | |
| 75 { | |
| 76 Jobs::iterator info = jobs_.find(jobId); | |
| 77 | |
| 78 if (info == jobs_.end()) | |
| 79 { | |
| 80 throw OrthancException(ErrorCode_InternalError); | |
| 81 } | |
| 82 | |
| 83 return info->second; | |
| 84 } | |
| 85 | |
| 86 | |
| 87 void ServerScheduler::SignalSuccess(const std::string& jobId) | |
| 88 { | |
| 89 boost::mutex::scoped_lock lock(mutex_); | |
| 90 | |
| 91 JobInfo& info = GetJobInfo(jobId); | |
| 92 info.success_++; | |
| 93 | |
| 94 assert(info.failures_ == 0); | |
| 95 | |
| 96 if (info.success_ >= info.size_) | |
| 97 { | |
| 98 if (info.watched_) | |
| 99 { | |
| 100 watchedJobStatus_[jobId] = JobStatus_Success; | |
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101 watchedJobFinished_.notify_all(); |
| 781 | 102 } |
| 103 | |
| 104 LOG(INFO) << "Job successfully finished (" << info.description_ << ")"; | |
| 105 jobs_.erase(jobId); | |
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106 |
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107 availableJob_.Release(); |
| 781 | 108 } |
| 109 } | |
| 110 | |
| 111 | |
| 112 void ServerScheduler::SignalFailure(const std::string& jobId) | |
| 113 { | |
| 114 boost::mutex::scoped_lock lock(mutex_); | |
| 115 | |
| 116 JobInfo& info = GetJobInfo(jobId); | |
| 117 info.failures_++; | |
| 118 | |
| 119 if (info.success_ + info.failures_ >= info.size_) | |
| 120 { | |
| 121 if (info.watched_) | |
| 122 { | |
| 123 watchedJobStatus_[jobId] = JobStatus_Failure; | |
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124 watchedJobFinished_.notify_all(); |
| 781 | 125 } |
| 126 | |
| 127 LOG(ERROR) << "Job has failed (" << info.description_ << ")"; | |
| 128 jobs_.erase(jobId); | |
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129 |
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130 availableJob_.Release(); |
| 781 | 131 } |
| 132 } | |
| 133 | |
| 134 | |
| 135 void ServerScheduler::Worker(ServerScheduler* that) | |
| 136 { | |
| 137 static const int32_t TIMEOUT = 100; | |
| 138 | |
|
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139 LOG(WARNING) << "The server scheduler has started"; |
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140 |
| 781 | 141 while (!that->finish_) |
| 142 { | |
| 143 std::auto_ptr<IDynamicObject> object(that->queue_.Dequeue(TIMEOUT)); | |
| 144 if (object.get() != NULL) | |
| 145 { | |
| 146 ServerFilterInstance& filter = dynamic_cast<ServerFilterInstance&>(*object); | |
| 147 | |
| 148 // Skip the execution of this filter if its parent job has | |
| 149 // previously failed. | |
| 150 bool jobHasFailed; | |
| 151 { | |
| 152 boost::mutex::scoped_lock lock(that->mutex_); | |
| 153 JobInfo& info = that->GetJobInfo(filter.GetJobId()); | |
| 154 jobHasFailed = (info.failures_ > 0 || info.cancel_); | |
| 155 } | |
| 156 | |
| 157 if (jobHasFailed) | |
| 158 { | |
| 159 that->SignalFailure(filter.GetJobId()); | |
| 160 } | |
| 161 else | |
| 162 { | |
| 163 filter.Execute(*that); | |
| 164 } | |
| 165 } | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 | |
| 170 void ServerScheduler::SubmitInternal(ServerJob& job, | |
| 171 bool watched) | |
| 172 { | |
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8c67382f44a7
limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
783
diff
changeset
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173 availableJob_.Acquire(); |
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8c67382f44a7
limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
783
diff
changeset
|
174 |
| 781 | 175 boost::mutex::scoped_lock lock(mutex_); |
| 176 | |
| 177 JobInfo info; | |
| 178 info.size_ = job.Submit(queue_, *this); | |
| 179 info.cancel_ = false; | |
| 180 info.success_ = 0; | |
| 181 info.failures_ = 0; | |
| 182 info.description_ = job.GetDescription(); | |
| 183 info.watched_ = watched; | |
| 184 | |
| 185 assert(info.size_ > 0); | |
| 186 | |
| 187 if (watched) | |
| 188 { | |
| 189 watchedJobStatus_[job.GetId()] = JobStatus_Running; | |
| 190 } | |
| 191 | |
| 192 jobs_[job.GetId()] = info; | |
| 193 | |
| 194 LOG(INFO) << "New job submitted (" << job.description_ << ")"; | |
| 195 } | |
| 196 | |
| 197 | |
|
995
8c67382f44a7
limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
783
diff
changeset
|
198 ServerScheduler::ServerScheduler(unsigned int maxJobs) : availableJob_(maxJobs) |
| 781 | 199 { |
| 200 finish_ = false; | |
| 201 worker_ = boost::thread(Worker, this); | |
| 202 } | |
| 203 | |
| 204 | |
| 205 ServerScheduler::~ServerScheduler() | |
| 206 { | |
| 207 finish_ = true; | |
| 208 worker_.join(); | |
| 209 } | |
| 210 | |
| 211 | |
| 212 void ServerScheduler::Submit(ServerJob& job) | |
| 213 { | |
| 214 if (job.filters_.empty()) | |
| 215 { | |
| 216 return; | |
| 217 } | |
| 218 | |
| 219 SubmitInternal(job, false); | |
| 220 } | |
| 221 | |
| 222 | |
| 223 bool ServerScheduler::SubmitAndWait(ListOfStrings& outputs, | |
| 224 ServerJob& job) | |
| 225 { | |
| 226 std::string jobId = job.GetId(); | |
| 227 | |
| 228 outputs.clear(); | |
| 229 | |
| 230 if (job.filters_.empty()) | |
| 231 { | |
| 232 return true; | |
| 233 } | |
| 234 | |
| 235 // Add a sink filter to collect all the results of the filters | |
| 236 // that have no next filter. | |
| 237 ServerFilterInstance& sink = job.AddFilter(new Sink(outputs)); | |
| 238 | |
| 239 for (std::list<ServerFilterInstance*>::iterator | |
| 240 it = job.filters_.begin(); it != job.filters_.end(); it++) | |
| 241 { | |
| 242 if ((*it) != &sink && | |
| 243 (*it)->GetNextFilters().size() == 0 && | |
| 244 (*it)->GetFilter().SendOutputsToSink()) | |
| 245 { | |
| 246 (*it)->ConnectNext(sink); | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 // Submit the job | |
| 251 SubmitInternal(job, true); | |
| 252 | |
| 253 // Wait for the job to complete (either success or failure) | |
| 254 JobStatus status; | |
| 255 | |
| 256 { | |
| 257 boost::mutex::scoped_lock lock(mutex_); | |
| 258 | |
| 259 assert(watchedJobStatus_.find(jobId) != watchedJobStatus_.end()); | |
| 260 | |
| 261 while (watchedJobStatus_[jobId] == JobStatus_Running) | |
| 262 { | |
|
995
8c67382f44a7
limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
783
diff
changeset
|
263 watchedJobFinished_.wait(lock); |
| 781 | 264 } |
| 265 | |
| 266 status = watchedJobStatus_[jobId]; | |
| 267 watchedJobStatus_.erase(jobId); | |
| 268 } | |
| 269 | |
| 270 return (status == JobStatus_Success); | |
| 271 } | |
| 272 | |
| 273 | |
| 274 bool ServerScheduler::IsRunning(const std::string& jobId) | |
| 275 { | |
| 276 boost::mutex::scoped_lock lock(mutex_); | |
| 277 return jobs_.find(jobId) != jobs_.end(); | |
| 278 } | |
| 279 | |
| 280 | |
| 281 void ServerScheduler::Cancel(const std::string& jobId) | |
| 282 { | |
| 283 boost::mutex::scoped_lock lock(mutex_); | |
| 284 | |
| 285 Jobs::iterator job = jobs_.find(jobId); | |
| 286 | |
| 287 if (job != jobs_.end()) | |
| 288 { | |
| 289 job->second.cancel_ = true; | |
| 290 LOG(WARNING) << "Canceling a job (" << job->second.description_ << ")"; | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 | |
| 295 float ServerScheduler::GetProgress(const std::string& jobId) | |
| 296 { | |
| 297 boost::mutex::scoped_lock lock(mutex_); | |
| 298 | |
| 299 Jobs::iterator job = jobs_.find(jobId); | |
| 300 | |
| 301 if (job == jobs_.end() || | |
| 302 job->second.size_ == 0 /* should never happen */) | |
| 303 { | |
| 304 // This job is not running | |
| 305 return 1; | |
| 306 } | |
| 307 | |
| 308 if (job->second.failures_ != 0) | |
| 309 { | |
| 310 return 1; | |
| 311 } | |
| 312 | |
| 313 if (job->second.size_ == 1) | |
| 314 { | |
| 315 return job->second.success_; | |
| 316 } | |
| 317 | |
| 318 return (static_cast<float>(job->second.success_) / | |
| 319 static_cast<float>(job->second.size_ - 1)); | |
| 320 } | |
| 321 | |
| 322 | |
| 323 void ServerScheduler::GetListOfJobs(ListOfStrings& jobs) | |
| 324 { | |
| 325 boost::mutex::scoped_lock lock(mutex_); | |
| 326 | |
| 327 jobs.clear(); | |
| 328 | |
| 329 for (Jobs::const_iterator | |
| 330 it = jobs_.begin(); it != jobs_.end(); it++) | |
| 331 { | |
| 332 jobs.push_back(it->first); | |
| 333 } | |
| 334 } | |
| 335 } |