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annotate OrthancFramework/Sources/DicomNetworking/TimeoutDicomConnectionManager.cpp @ 5853:4d932683049d get-scu tip

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very first implementation of C-Get SCU
author Alain Mazy <am@orthanc.team>
date Tue, 29 Oct 2024 17:25:49 +0100
parents f7adfb22e20e
children
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Lesser General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Lesser General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Lesser General Public
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20 * License along with this program. If not, see
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21 * <http://www.gnu.org/licenses/>.
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22 **/
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25 #include "../PrecompiledHeaders.h"
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26 #include "TimeoutDicomConnectionManager.h"
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27
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28 #include "../Logging.h"
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29 #include "../OrthancException.h"
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30
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31 namespace Orthanc
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32 {
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33 static boost::posix_time::ptime GetNow()
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34 {
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35 return boost::posix_time::microsec_clock::universal_time();
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36 }
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37
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38
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39 TimeoutDicomConnectionManager::Lock::Lock(TimeoutDicomConnectionManager& that,
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40 const std::string& localAet,
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41 const RemoteModalityParameters& remote) :
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42 that_(that),
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43 lock_(that_.mutex_)
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44 {
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45 // Calling "Touch()" will be done by the "~Lock()" destructor
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46 that_.OpenInternal(localAet, remote);
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47 }
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50 TimeoutDicomConnectionManager::Lock::~Lock()
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51 {
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52 that_.TouchInternal();
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53 }
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54
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55
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56 DicomStoreUserConnection& TimeoutDicomConnectionManager::Lock::GetConnection()
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57 {
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58 if (that_.connection_.get() == NULL)
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59 {
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60 // The allocation should have been done by "that_.Open()" in the constructor
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61 throw OrthancException(ErrorCode_InternalError);
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62 }
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63 else
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64 {
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65 return *that_.connection_;
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66 }
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67 }
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68
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69
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70 // Mutex must be locked
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71 void TimeoutDicomConnectionManager::TouchInternal()
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72 {
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73 lastUse_ = GetNow();
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74 }
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75
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76
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77 // Mutex must be locked
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78 void TimeoutDicomConnectionManager::OpenInternal(const std::string& localAet,
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79 const RemoteModalityParameters& remote)
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80 {
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81 DicomAssociationParameters other(localAet, remote);
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82
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83 if (connection_.get() == NULL ||
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84 !connection_->GetParameters().IsEqual(other))
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85 {
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86 connection_.reset(new DicomStoreUserConnection(other));
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87 }
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88 }
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89
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91 // Mutex must be locked
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92 void TimeoutDicomConnectionManager::CloseInternal()
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93 {
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94 if (connection_.get() != NULL)
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95 {
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96 CLOG(INFO, DICOM) << "Closing inactive DICOM association with modality: "
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97 << connection_->GetParameters().GetRemoteModality().GetApplicationEntityTitle();
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98
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99 connection_.reset(NULL);
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100 }
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101 }
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102
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103
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104 void TimeoutDicomConnectionManager::SetInactivityTimeout(unsigned int milliseconds)
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105 {
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106 boost::mutex::scoped_lock lock(mutex_);
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107 timeout_ = boost::posix_time::milliseconds(milliseconds);
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108 CloseInternal();
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109 }
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110
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111
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112 unsigned int TimeoutDicomConnectionManager::GetInactivityTimeout()
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113 {
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114 boost::mutex::scoped_lock lock(mutex_);
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115 return static_cast<unsigned int>(timeout_.total_milliseconds());
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116 }
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117
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119 void TimeoutDicomConnectionManager::CloseIfInactive()
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120 {
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121 boost::mutex::scoped_lock lock(mutex_);
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122
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123 if (connection_.get() != NULL &&
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124 (GetNow() - lastUse_) >= timeout_)
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125 {
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126 CloseInternal();
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127 }
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128 }
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129 }