Mercurial > hg > orthanc

annotate Resources/Graveyard/OldScheduler/ReusableDicomUserConnection.cpp @ 3002:9ceb7dafae2e

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Dec 2018 18:36:52 +0100
parents 3ff4c50647ea
children 4e43e67f8ecf
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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) 2017-2018 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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "ReusableDicomUserConnection.h"
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36
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37 #include "../Logging.h"
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38 #include "../OrthancException.h"
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39
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40 namespace Orthanc
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41 {
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42 static boost::posix_time::ptime Now()
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43 {
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44 return boost::posix_time::microsec_clock::local_time();
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45 }
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46
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47 void ReusableDicomUserConnection::Open(const std::string& localAet,
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48 const RemoteModalityParameters& remote)
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49 {
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50 if (connection_ != NULL &&
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51 connection_->GetLocalApplicationEntityTitle() == localAet &&
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52 connection_->GetRemoteApplicationEntityTitle() == remote.GetApplicationEntityTitle() &&
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53 connection_->GetRemoteHost() == remote.GetHost() &&
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54 connection_->GetRemotePort() == remote.GetPort() &&
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55 connection_->GetRemoteManufacturer() == remote.GetManufacturer())
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56 {
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57 // The current connection can be reused
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58 LOG(INFO) << "Reusing the previous SCU connection";
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59 return;
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60 }
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61
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62 Close();
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63
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64 connection_ = new DicomUserConnection();
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65 connection_->SetLocalApplicationEntityTitle(localAet);
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66 connection_->SetRemoteModality(remote);
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67 connection_->Open();
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68 }
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69
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70 void ReusableDicomUserConnection::Close()
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71 {
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72 if (connection_ != NULL)
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73 {
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74 delete connection_;
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75 connection_ = NULL;
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76 }
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77 }
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78
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79 void ReusableDicomUserConnection::CloseThread(ReusableDicomUserConnection* that)
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80 {
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81 for (;;)
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82 {
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83 boost::this_thread::sleep(boost::posix_time::milliseconds(100));
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84 if (!that->continue_)
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85 {
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86 //LOG(INFO) << "Finishing the thread watching the global SCU connection";
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87 return;
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88 }
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89
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90 {
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91 boost::mutex::scoped_lock lock(that->mutex_);
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92 if (that->connection_ != NULL &&
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93 Now() >= that->lastUse_ + that->timeBeforeClose_)
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94 {
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95 LOG(INFO) << "Closing the global SCU connection after timeout";
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96 that->Close();
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97 }
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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
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103 ReusableDicomUserConnection::Locker::Locker(ReusableDicomUserConnection& that,
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104 const std::string& localAet,
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105 const RemoteModalityParameters& remote) :
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106 ::Orthanc::Locker(that)
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107 {
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108 that.Open(localAet, remote);
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109 connection_ = that.connection_;
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110 }
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111
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112
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113 DicomUserConnection& ReusableDicomUserConnection::Locker::GetConnection()
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114 {
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115 if (connection_ == NULL)
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116 {
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117 throw OrthancException(ErrorCode_InternalError);
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118 }
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119
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120 return *connection_;
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121 }
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122
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123 ReusableDicomUserConnection::ReusableDicomUserConnection() :
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124 connection_(NULL),
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125 timeBeforeClose_(boost::posix_time::seconds(5)) // By default, close connection after 5 seconds
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126 {
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127 lastUse_ = Now();
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128 continue_ = true;
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129 closeThread_ = boost::thread(CloseThread, this);
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130 }
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131
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132 ReusableDicomUserConnection::~ReusableDicomUserConnection()
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133 {
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134 if (continue_)
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135 {
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136 LOG(ERROR) << "INTERNAL ERROR: ReusableDicomUserConnection::Finalize() should be invoked manually to avoid mess in the destruction order!";
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137 Finalize();
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138 }
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139 }
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140
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141 void ReusableDicomUserConnection::SetMillisecondsBeforeClose(uint64_t ms)
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142 {
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143 boost::mutex::scoped_lock lock(mutex_);
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144
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145 if (ms == 0)
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146 {
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147 ms = 1;
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148 }
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149
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150 timeBeforeClose_ = boost::posix_time::milliseconds(ms);
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151 }
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152
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153 void ReusableDicomUserConnection::Lock()
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154 {
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155 mutex_.lock();
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156 }
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157
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158 void ReusableDicomUserConnection::Unlock()
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159 {
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160 if (connection_ != NULL &&
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161 connection_->GetRemoteManufacturer() == ModalityManufacturer_StoreScp)
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162 {
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163 // "storescp" from DCMTK has problems when reusing a
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164 // connection. Always close.
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165 Close();
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166 }
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167
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168 lastUse_ = Now();
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169 mutex_.unlock();
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170 }
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171
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172
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173 void ReusableDicomUserConnection::Finalize()
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174 {
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175 if (continue_)
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176 {
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177 continue_ = false;
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178
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179 if (closeThread_.joinable())
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180 {
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181 closeThread_.join();
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182 }
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183
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184 Close();
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185 }
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186 }
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187 }
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188