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annotate OrthancFramework/Sources/DicomNetworking/TimeoutDicomConnectionManager.cpp @ 4119:bf7b9edf6b81 framework-lgpl

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re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 19:17:56 +0200
parents d25f4c0fa160
children 756126cd2219
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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23 #include "../PrecompiledHeaders.h"
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24 #include "TimeoutDicomConnectionManager.h"
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25
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26 #include "../Logging.h"
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27 #include "../OrthancException.h"
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28
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29 namespace Orthanc
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30 {
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31 static boost::posix_time::ptime GetNow()
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32 {
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33 return boost::posix_time::microsec_clock::universal_time();
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34 }
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37 TimeoutDicomConnectionManager::Lock::Lock(TimeoutDicomConnectionManager& that,
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38 const std::string& localAet,
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39 const RemoteModalityParameters& remote) :
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40 that_(that),
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41 lock_(that_.mutex_)
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42 {
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43 // Calling "Touch()" will be done by the "~Lock()" destructor
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44 that_.OpenInternal(localAet, remote);
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45 }
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47
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48 TimeoutDicomConnectionManager::Lock::~Lock()
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49 {
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50 that_.TouchInternal();
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51 }
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53
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54 DicomStoreUserConnection& TimeoutDicomConnectionManager::Lock::GetConnection()
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55 {
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56 if (that_.connection_.get() == NULL)
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57 {
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58 // The allocation should have been done by "that_.Open()" in the constructor
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59 throw OrthancException(ErrorCode_InternalError);
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60 }
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61 else
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62 {
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63 return *that_.connection_;
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64 }
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65 }
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68 // Mutex must be locked
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69 void TimeoutDicomConnectionManager::TouchInternal()
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70 {
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71 lastUse_ = GetNow();
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72 }
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73
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74
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75 // Mutex must be locked
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76 void TimeoutDicomConnectionManager::OpenInternal(const std::string& localAet,
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77 const RemoteModalityParameters& remote)
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78 {
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79 DicomAssociationParameters other(localAet, remote);
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80
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81 if (connection_.get() == NULL ||
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82 !connection_->GetParameters().IsEqual(other))
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83 {
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84 connection_.reset(new DicomStoreUserConnection(other));
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85 }
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86 }
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87
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89 // Mutex must be locked
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90 void TimeoutDicomConnectionManager::CloseInternal()
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91 {
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92 if (connection_.get() != NULL)
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93 {
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94 LOG(INFO) << "Closing inactive DICOM association with modality: "
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95 << connection_->GetParameters().GetRemoteModality().GetApplicationEntityTitle();
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96
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97 connection_.reset(NULL);
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98 }
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99 }
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100
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101
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102 void TimeoutDicomConnectionManager::SetInactivityTimeout(unsigned int milliseconds)
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103 {
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104 boost::mutex::scoped_lock lock(mutex_);
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105 timeout_ = boost::posix_time::milliseconds(milliseconds);
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106 CloseInternal();
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107 }
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108
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109
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110 unsigned int TimeoutDicomConnectionManager::GetInactivityTimeout()
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111 {
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112 boost::mutex::scoped_lock lock(mutex_);
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113 return static_cast<unsigned int>(timeout_.total_milliseconds());
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114 }
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115
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116
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117 void TimeoutDicomConnectionManager::CloseIfInactive()
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118 {
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119 boost::mutex::scoped_lock lock(mutex_);
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120
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121 if (connection_.get() != NULL &&
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122 (GetNow() - lastUse_) >= timeout_)
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123 {
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124 CloseInternal();
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125 }
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126 }
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127 }