Mercurial > hg > orthanc-databases
annotate Framework/Plugins/IndexConnectionsPool.cpp @ 463:0d168a2cadec pg-transactions
fix
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 31 Jan 2024 14:53:37 +0100 |
parents | ecd0b719cff5 |
children | 54d518dcd74a |
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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) 2017-2024 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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7 * |
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8 * This program is free software: you can redistribute it and/or |
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9 * modify it under the terms of the GNU Affero General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
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12 * |
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13 * This program is distributed in the hope that it will be useful, but |
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Affero General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Affero General Public License |
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #include "IndexConnectionsPool.h" |
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24 |
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25 namespace OrthancDatabases |
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26 { |
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27 class IndexConnectionsPool::ManagerReference : public Orthanc::IDynamicObject |
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28 { |
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29 private: |
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30 DatabaseManager* manager_; |
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31 |
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32 public: |
405 | 33 explicit ManagerReference(DatabaseManager& manager) : |
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34 manager_(&manager) |
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35 { |
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36 } |
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37 |
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38 DatabaseManager& GetManager() |
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39 { |
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40 assert(manager_ != NULL); |
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41 return *manager_; |
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42 } |
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43 }; |
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44 |
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45 |
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46 IndexConnectionsPool::IndexConnectionsPool(IndexBackend* backend, |
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47 size_t countConnections) : |
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48 backend_(backend), |
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49 countConnections_(countConnections) |
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50 { |
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51 if (countConnections == 0) |
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52 { |
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53 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, |
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54 "There must be a non-zero number of connections to the database"); |
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55 } |
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56 else if (backend == NULL) |
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57 { |
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58 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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59 } |
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60 else |
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61 { |
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62 context_ = backend_->GetContext(); |
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63 } |
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64 } |
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65 |
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66 |
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67 IndexConnectionsPool::~IndexConnectionsPool() |
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68 { |
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69 for (std::list<DatabaseManager*>::iterator |
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70 it = connections_.begin(); it != connections_.end(); ++it) |
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71 { |
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72 assert(*it != NULL); |
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73 delete *it; |
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74 } |
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75 } |
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76 |
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77 |
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78 void IndexConnectionsPool::OpenConnections(bool hasIdentifierTags, |
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79 const std::list<IdentifierTag>& identifierTags) |
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80 { |
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81 boost::unique_lock<boost::shared_mutex> lock(connectionsMutex_); |
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82 |
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83 if (connections_.size() == 0) |
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84 { |
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85 assert(backend_.get() != NULL); |
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86 |
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87 { |
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88 std::unique_ptr<DatabaseManager> manager(new DatabaseManager(backend_->CreateDatabaseFactory())); |
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89 manager->GetDatabase(); // Make sure to open the database connection |
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90 |
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91 backend_->ConfigureDatabase(*manager, hasIdentifierTags, identifierTags); |
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92 connections_.push_back(manager.release()); |
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93 } |
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94 |
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95 for (size_t i = 1; i < countConnections_; i++) |
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96 { |
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97 connections_.push_back(new DatabaseManager(backend_->CreateDatabaseFactory())); |
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98 connections_.back()->GetDatabase(); // Make sure to open the database connection |
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99 } |
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100 |
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101 for (std::list<DatabaseManager*>::iterator |
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102 it = connections_.begin(); it != connections_.end(); ++it) |
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103 { |
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104 assert(*it != NULL); |
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105 availableConnections_.Enqueue(new ManagerReference(**it)); |
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106 } |
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107 } |
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108 else |
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109 { |
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110 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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111 } |
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112 } |
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113 |
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114 |
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115 void IndexConnectionsPool::CloseConnections() |
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116 { |
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117 boost::unique_lock<boost::shared_mutex> lock(connectionsMutex_); |
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118 |
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119 if (connections_.size() != countConnections_) |
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120 { |
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121 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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122 } |
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123 else if (availableConnections_.GetSize() != countConnections_) |
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124 { |
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125 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Some connections are still in use, bug in the Orthanc core"); |
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126 } |
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127 else |
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128 { |
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129 for (std::list<DatabaseManager*>::iterator |
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130 it = connections_.begin(); it != connections_.end(); ++it) |
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131 { |
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132 assert(*it != NULL); |
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133 (*it)->Close(); |
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134 } |
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135 } |
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136 } |
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137 |
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138 |
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139 IndexConnectionsPool::Accessor::Accessor(IndexConnectionsPool& pool) : |
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140 lock_(pool.connectionsMutex_), |
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141 pool_(pool), |
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142 manager_(NULL) |
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143 { |
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144 for (;;) |
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145 { |
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146 std::unique_ptr<Orthanc::IDynamicObject> manager(pool.availableConnections_.Dequeue(100)); |
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147 if (manager.get() != NULL) |
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148 { |
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149 manager_ = &dynamic_cast<ManagerReference&>(*manager).GetManager(); |
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150 return; |
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151 } |
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152 } |
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153 } |
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154 |
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155 |
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156 IndexConnectionsPool::Accessor::~Accessor() |
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157 { |
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158 assert(manager_ != NULL); |
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159 pool_.availableConnections_.Enqueue(new ManagerReference(*manager_)); |
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160 } |
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161 |
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162 |
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163 IndexBackend& IndexConnectionsPool::Accessor::GetBackend() const |
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164 { |
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165 return *pool_.backend_; |
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166 } |
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167 |
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168 |
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169 DatabaseManager& IndexConnectionsPool::Accessor::GetManager() const |
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170 { |
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171 assert(manager_ != NULL); |
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172 return *manager_; |
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173 } |
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174 } |