Mercurial > hg > orthanc
diff Resources/Graveyard/OldScheduler/ReusableDicomUserConnection.cpp @ 2610:3ff4c50647ea jobs
moving the old scheduler to the graveyard
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 19 May 2018 16:40:26 +0200 |
parents | Core/DicomNetworking/ReusableDicomUserConnection.cpp@878b59270859 |
children | 4e43e67f8ecf |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Resources/Graveyard/OldScheduler/ReusableDicomUserConnection.cpp Sat May 19 16:40:26 2018 +0200 @@ -0,0 +1,188 @@ +/** + * 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 "ReusableDicomUserConnection.h" + +#include "../Logging.h" +#include "../OrthancException.h" + +namespace Orthanc +{ + static boost::posix_time::ptime Now() + { + return boost::posix_time::microsec_clock::local_time(); + } + + void ReusableDicomUserConnection::Open(const std::string& localAet, + const RemoteModalityParameters& remote) + { + if (connection_ != NULL && + connection_->GetLocalApplicationEntityTitle() == localAet && + connection_->GetRemoteApplicationEntityTitle() == remote.GetApplicationEntityTitle() && + connection_->GetRemoteHost() == remote.GetHost() && + connection_->GetRemotePort() == remote.GetPort() && + connection_->GetRemoteManufacturer() == remote.GetManufacturer()) + { + // The current connection can be reused + LOG(INFO) << "Reusing the previous SCU connection"; + return; + } + + Close(); + + connection_ = new DicomUserConnection(); + connection_->SetLocalApplicationEntityTitle(localAet); + connection_->SetRemoteModality(remote); + connection_->Open(); + } + + void ReusableDicomUserConnection::Close() + { + if (connection_ != NULL) + { + delete connection_; + connection_ = NULL; + } + } + + void ReusableDicomUserConnection::CloseThread(ReusableDicomUserConnection* that) + { + for (;;) + { + boost::this_thread::sleep(boost::posix_time::milliseconds(100)); + if (!that->continue_) + { + //LOG(INFO) << "Finishing the thread watching the global SCU connection"; + return; + } + + { + boost::mutex::scoped_lock lock(that->mutex_); + if (that->connection_ != NULL && + Now() >= that->lastUse_ + that->timeBeforeClose_) + { + LOG(INFO) << "Closing the global SCU connection after timeout"; + that->Close(); + } + } + } + } + + + ReusableDicomUserConnection::Locker::Locker(ReusableDicomUserConnection& that, + const std::string& localAet, + const RemoteModalityParameters& remote) : + ::Orthanc::Locker(that) + { + that.Open(localAet, remote); + connection_ = that.connection_; + } + + + DicomUserConnection& ReusableDicomUserConnection::Locker::GetConnection() + { + if (connection_ == NULL) + { + throw OrthancException(ErrorCode_InternalError); + } + + return *connection_; + } + + ReusableDicomUserConnection::ReusableDicomUserConnection() : + connection_(NULL), + timeBeforeClose_(boost::posix_time::seconds(5)) // By default, close connection after 5 seconds + { + lastUse_ = Now(); + continue_ = true; + closeThread_ = boost::thread(CloseThread, this); + } + + ReusableDicomUserConnection::~ReusableDicomUserConnection() + { + if (continue_) + { + LOG(ERROR) << "INTERNAL ERROR: ReusableDicomUserConnection::Finalize() should be invoked manually to avoid mess in the destruction order!"; + Finalize(); + } + } + + void ReusableDicomUserConnection::SetMillisecondsBeforeClose(uint64_t ms) + { + boost::mutex::scoped_lock lock(mutex_); + + if (ms == 0) + { + ms = 1; + } + + timeBeforeClose_ = boost::posix_time::milliseconds(ms); + } + + void ReusableDicomUserConnection::Lock() + { + mutex_.lock(); + } + + void ReusableDicomUserConnection::Unlock() + { + if (connection_ != NULL && + connection_->GetRemoteManufacturer() == ModalityManufacturer_StoreScp) + { + // "storescp" from DCMTK has problems when reusing a + // connection. Always close. + Close(); + } + + lastUse_ = Now(); + mutex_.unlock(); + } + + + void ReusableDicomUserConnection::Finalize() + { + if (continue_) + { + continue_ = false; + + if (closeThread_.joinable()) + { + closeThread_.join(); + } + + Close(); + } + } +} +