Mercurial > hg > orthanc-databases
annotate Framework/Plugins/StorageBackend.cpp @ 12:41543239072d
transactions for storage area
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 09 Jul 2018 18:34:56 +0200 |
parents | d17b2631bb67 |
children | 9774802fd05f |
rev | line source |
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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 Affero 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 * Affero 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 Affero General Public License |
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 **/ |
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20 |
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21 |
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22 #include "StorageBackend.h" |
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23 |
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24 #if HAS_ORTHANC_EXCEPTION != 1 |
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25 # error HAS_ORTHANC_EXCEPTION must be set to 1 |
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26 #endif |
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27 |
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28 #include <Core/OrthancException.h> |
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29 |
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30 |
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31 #define ORTHANC_PLUGINS_DATABASE_CATCH \ |
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32 catch (::Orthanc::OrthancException& e) \ |
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33 { \ |
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34 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode()); \ |
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35 } \ |
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36 catch (::std::runtime_error& e) \ |
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37 { \ |
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38 std::string s = "Exception in storage area back-end: " + std::string(e.what()); \ |
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39 OrthancPluginLogError(context_, s.c_str()); \ |
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40 return OrthancPluginErrorCode_DatabasePlugin; \ |
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41 } \ |
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42 catch (...) \ |
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43 { \ |
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44 OrthancPluginLogError(context_, "Native exception"); \ |
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45 return OrthancPluginErrorCode_DatabasePlugin; \ |
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46 } |
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47 |
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48 |
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49 namespace OrthancDatabases |
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50 { |
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51 void StorageBackend::ReadFromString(void*& buffer, |
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52 size_t& size, |
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53 const std::string& content) |
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54 { |
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55 size = content.size(); |
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56 |
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57 if (content.empty()) |
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58 { |
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59 buffer = NULL; |
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60 } |
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61 else |
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62 { |
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63 buffer = malloc(size); |
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64 |
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65 if (buffer == NULL) |
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66 { |
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67 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotEnoughMemory); |
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68 } |
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69 |
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70 memcpy(buffer, content.c_str(), size); |
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71 } |
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72 } |
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73 |
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74 |
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75 StorageBackend::StorageBackend(IDatabaseFactory* factory) : |
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76 manager_(factory) |
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77 { |
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78 } |
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79 |
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80 |
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81 static OrthancPluginContext* context_ = NULL; |
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82 static std::auto_ptr<StorageBackend> backend_; |
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83 |
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84 |
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85 static OrthancPluginErrorCode StorageCreate(const char* uuid, |
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86 const void* content, |
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87 int64_t size, |
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88 OrthancPluginContentType type) |
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89 { |
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90 try |
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91 { |
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92 DatabaseManager::Transaction transaction(backend_->GetManager()); |
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93 backend_->Create(transaction, uuid, content, static_cast<size_t>(size), type); |
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94 transaction.Commit(); |
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95 return OrthancPluginErrorCode_Success; |
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96 } |
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97 ORTHANC_PLUGINS_DATABASE_CATCH; |
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98 } |
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99 |
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100 |
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101 static OrthancPluginErrorCode StorageRead(void** content, |
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102 int64_t* size, |
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103 const char* uuid, |
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104 OrthancPluginContentType type) |
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105 { |
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106 try |
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107 { |
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108 DatabaseManager::Transaction transaction(backend_->GetManager()); |
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109 size_t tmp; |
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110 backend_->Read(*content, tmp, transaction, uuid, type); |
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111 *size = static_cast<int64_t>(tmp); |
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112 transaction.Commit(); |
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113 return OrthancPluginErrorCode_Success; |
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114 } |
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115 ORTHANC_PLUGINS_DATABASE_CATCH; |
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116 } |
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117 |
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118 |
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119 static OrthancPluginErrorCode StorageRemove(const char* uuid, |
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120 OrthancPluginContentType type) |
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121 { |
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122 try |
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123 { |
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124 DatabaseManager::Transaction transaction(backend_->GetManager()); |
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125 backend_->Remove(transaction, uuid, type); |
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126 transaction.Commit(); |
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127 return OrthancPluginErrorCode_Success; |
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128 } |
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129 ORTHANC_PLUGINS_DATABASE_CATCH; |
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130 } |
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131 |
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132 |
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133 void StorageBackend::Register(OrthancPluginContext* context, |
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134 StorageBackend* backend) |
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135 { |
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136 if (context == NULL || |
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137 backend == NULL) |
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138 { |
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139 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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140 } |
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141 |
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142 if (context_ != NULL || |
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143 backend_.get() != NULL) |
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144 { |
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145 // This function can only be invoked once in the plugin |
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146 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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147 } |
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148 else |
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149 { |
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150 context_ = context; |
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151 backend_.reset(backend); |
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152 |
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153 OrthancPluginRegisterStorageArea(context_, StorageCreate, StorageRead, StorageRemove); |
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154 } |
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155 } |
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156 |
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157 |
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158 void StorageBackend::Finalize() |
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159 { |
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160 backend_.reset(NULL); |
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161 context_ = NULL; |
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162 } |
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163 } |