Mercurial > hg > orthanc
view Core/JobsEngine/JobsEngine.cpp @ 2956:bfee0b9f3209
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 03 Dec 2018 15:11:42 +0100 |
parents | dc18d5804746 |
children | 4e43e67f8ecf |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2018 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * In addition, as a special exception, the copyright holders of this * program give permission to link the code of its release with the * OpenSSL project's "OpenSSL" library (or with modified versions of it * that use the same license as the "OpenSSL" library), and distribute * the linked executables. You must obey the GNU General Public License * in all respects for all of the code used other than "OpenSSL". If you * modify file(s) with this exception, you may extend this exception to * your version of the file(s), but you are not obligated to do so. If * you do not wish to do so, delete this exception statement from your * version. If you delete this exception statement from all source files * in the program, then also delete it here. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "../PrecompiledHeaders.h" #include "JobsEngine.h" #include "../Logging.h" #include "../OrthancException.h" #include <json/reader.h> namespace Orthanc { bool JobsEngine::IsRunning() { boost::mutex::scoped_lock lock(stateMutex_); return (state_ == State_Running); } bool JobsEngine::ExecuteStep(JobsRegistry::RunningJob& running, size_t workerIndex) { assert(running.IsValid()); if (running.IsPauseScheduled()) { running.GetJob().Stop(JobStopReason_Paused); running.MarkPause(); return false; } if (running.IsCancelScheduled()) { running.GetJob().Stop(JobStopReason_Canceled); running.MarkCanceled(); return false; } JobStepResult result; try { result = running.GetJob().Step(); } catch (OrthancException& e) { result = JobStepResult::Failure(e.GetErrorCode()); } catch (boost::bad_lexical_cast&) { result = JobStepResult::Failure(ErrorCode_BadFileFormat); } catch (...) { result = JobStepResult::Failure(ErrorCode_InternalError); } switch (result.GetCode()) { case JobStepCode_Success: running.GetJob().Stop(JobStopReason_Success); running.UpdateStatus(ErrorCode_Success); running.MarkSuccess(); return false; case JobStepCode_Failure: running.GetJob().Stop(JobStopReason_Failure); running.UpdateStatus(result.GetFailureCode()); running.MarkFailure(); return false; case JobStepCode_Retry: running.GetJob().Stop(JobStopReason_Retry); running.UpdateStatus(ErrorCode_Success); running.MarkRetry(result.GetRetryTimeout()); return false; case JobStepCode_Continue: running.UpdateStatus(ErrorCode_Success); return true; default: throw OrthancException(ErrorCode_InternalError); } } void JobsEngine::RetryHandler(JobsEngine* engine) { assert(engine != NULL); while (engine->IsRunning()) { boost::this_thread::sleep(boost::posix_time::milliseconds(engine->threadSleep_)); engine->GetRegistry().ScheduleRetries(); } } void JobsEngine::Worker(JobsEngine* engine, size_t workerIndex) { assert(engine != NULL); LOG(INFO) << "Worker thread " << workerIndex << " has started"; while (engine->IsRunning()) { JobsRegistry::RunningJob running(engine->GetRegistry(), engine->threadSleep_); if (running.IsValid()) { LOG(INFO) << "Executing job with priority " << running.GetPriority() << " in worker thread " << workerIndex << ": " << running.GetId(); while (engine->IsRunning()) { if (!engine->ExecuteStep(running, workerIndex)) { break; } } } } } JobsEngine::JobsEngine(size_t maxCompletedJobs) : state_(State_Setup), registry_(new JobsRegistry(maxCompletedJobs)), threadSleep_(200), workers_(1) { } JobsEngine::~JobsEngine() { if (state_ != State_Setup && state_ != State_Done) { LOG(ERROR) << "INTERNAL ERROR: JobsEngine::Stop() should be invoked manually to avoid mess in the destruction order!"; Stop(); } } JobsRegistry& JobsEngine::GetRegistry() { if (registry_.get() == NULL) { throw OrthancException(ErrorCode_InternalError); } return *registry_; } void JobsEngine::LoadRegistryFromJson(IJobUnserializer& unserializer, const Json::Value& serialized) { boost::mutex::scoped_lock lock(stateMutex_); if (state_ != State_Setup) { // Can only be invoked before calling "Start()" throw OrthancException(ErrorCode_BadSequenceOfCalls); } assert(registry_.get() != NULL); const size_t maxCompletedJobs = registry_->GetMaxCompletedJobs(); registry_.reset(new JobsRegistry(unserializer, serialized, maxCompletedJobs)); } void JobsEngine::LoadRegistryFromString(IJobUnserializer& unserializer, const std::string& serialized) { Json::Value value; Json::Reader reader; if (reader.parse(serialized, value)) { LoadRegistryFromJson(unserializer, value); } else { throw OrthancException(ErrorCode_BadFileFormat); } } void JobsEngine::SetWorkersCount(size_t count) { boost::mutex::scoped_lock lock(stateMutex_); if (state_ != State_Setup) { // Can only be invoked before calling "Start()" throw OrthancException(ErrorCode_BadSequenceOfCalls); } workers_.resize(count); } void JobsEngine::SetThreadSleep(unsigned int sleep) { boost::mutex::scoped_lock lock(stateMutex_); if (state_ != State_Setup) { // Can only be invoked before calling "Start()" throw OrthancException(ErrorCode_BadSequenceOfCalls); } threadSleep_ = sleep; } void JobsEngine::Start() { boost::mutex::scoped_lock lock(stateMutex_); if (state_ != State_Setup) { throw OrthancException(ErrorCode_BadSequenceOfCalls); } retryHandler_ = boost::thread(RetryHandler, this); if (workers_.size() == 0) { // Use all the available CPUs size_t n = boost::thread::hardware_concurrency(); if (n == 0) { n = 1; } workers_.resize(n); } for (size_t i = 0; i < workers_.size(); i++) { assert(workers_[i] == NULL); workers_[i] = new boost::thread(Worker, this, i); } state_ = State_Running; LOG(WARNING) << "The jobs engine has started with " << workers_.size() << " threads"; } void JobsEngine::Stop() { { boost::mutex::scoped_lock lock(stateMutex_); if (state_ != State_Running) { return; } state_ = State_Stopping; } LOG(INFO) << "Stopping the jobs engine"; if (retryHandler_.joinable()) { retryHandler_.join(); } for (size_t i = 0; i < workers_.size(); i++) { assert(workers_[i] != NULL); if (workers_[i]->joinable()) { workers_[i]->join(); } delete workers_[i]; } { boost::mutex::scoped_lock lock(stateMutex_); state_ = State_Done; } LOG(WARNING) << "The jobs engine has stopped"; } }