Mercurial > hg > orthanc-databases

annotate Framework/Plugins/DatabaseBackendAdapterV4.cpp @ 373:be7de633695c db-protobuf

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started DatabaseBackendAdapterV4
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 28 Mar 2023 12:47:54 +0200
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children 824d70ce85ff
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373
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Sebastien Jodogne <s.jodogne@gmail.com>
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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) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 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 "DatabaseBackendAdapterV4.h"
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24
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25 #if defined(ORTHANC_PLUGINS_VERSION_IS_ABOVE) // Macro introduced in Orthanc 1.3.1
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26 # if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 12, 0)
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27
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28 #include <OrthancDatabasePlugin.pb.h> // Include protobuf messages
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29
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30 #include <Logging.h>
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31 #include <MultiThreading/SharedMessageQueue.h>
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32 #include <OrthancException.h>
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33
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34 #include <stdexcept>
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35 #include <list>
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36 #include <string>
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37 #include <cassert>
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38
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39
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40 #define ORTHANC_PLUGINS_DATABASE_CATCH(context) \
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41
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42
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43 namespace OrthancDatabases
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44 {
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45 static bool isBackendInUse_ = false; // Only for sanity checks
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47
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48 static void ProcessDatabaseOperation(Orthanc::DatabasePluginMessages::DatabaseResponse& response,
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49 const Orthanc::DatabasePluginMessages::DatabaseRequest& request,
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50 IndexBackend& backend)
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51 {
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52 switch (request.operation())
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53 {
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54 case Orthanc::DatabasePluginMessages::OPERATION_GET_SYSTEM_INFORMATION:
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55 response.mutable_get_system_information()->set_supports_revisions(backend.HasRevisionsSupport());
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56 break;
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58 default:
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59 LOG(ERROR) << "Not implemented database operation from protobuf: " << request.operation();
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60 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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61 }
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62 }
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64
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65 static void ProcessTransactionOperation(Orthanc::DatabasePluginMessages::TransactionResponse& response,
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66 const Orthanc::DatabasePluginMessages::TransactionRequest& request,
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67 IndexBackend& backend)
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68 {
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69 switch (request.operation())
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70 {
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71 default:
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72 LOG(ERROR) << "Not implemented transaction operation from protobuf: " << request.operation();
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73 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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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 static OrthancPluginErrorCode CallBackend(OrthancPluginMemoryBuffer64* serializedResponse,
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79 void* rawBackend,
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80 const void* requestData,
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81 uint64_t requestSize)
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82 {
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83 Orthanc::DatabasePluginMessages::Request request;
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84 if (!request.ParseFromArray(requestData, requestSize))
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85 {
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86 LOG(ERROR) << "Cannot parse message from the Orthanc core using protobuf";
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87 return OrthancPluginErrorCode_InternalError;
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88 }
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89
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90 if (rawBackend == NULL)
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91 {
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92 LOG(ERROR) << "Received a NULL pointer from the database";
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93 return OrthancPluginErrorCode_InternalError;
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94 }
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95
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96 IndexBackend& backend = *reinterpret_cast<IndexBackend*>(rawBackend);
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97
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98 try
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99 {
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100 Orthanc::DatabasePluginMessages::Response response;
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101
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102 switch (request.type())
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103 {
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104 case Orthanc::DatabasePluginMessages::REQUEST_DATABASE:
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105 ProcessDatabaseOperation(*response.mutable_database_response(), request.database_request(), backend);
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106 break;
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107
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108 case Orthanc::DatabasePluginMessages::REQUEST_TRANSACTION:
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109 ProcessTransactionOperation(*response.mutable_transaction_response(), request.transaction_request(), backend);
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110 break;
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111
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112 default:
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113 LOG(ERROR) << "Not implemented request type from protobuf: " << request.type();
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114 break;
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115 }
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116
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117 std::string s;
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118 if (!response.SerializeToString(&s))
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119 {
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120 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "Cannot serialize to protobuf");
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121 }
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122
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123 if (OrthancPluginCreateMemoryBuffer64(backend.GetContext(), serializedResponse, s.size()) != OrthancPluginErrorCode_Success)
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124 {
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125 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotEnoughMemory, "Cannot allocate a memory buffer");
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126 }
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127
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128 if (!s.empty())
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129 {
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130 assert(serializedResponse->size == s.size());
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131 memcpy(serializedResponse->data, s.c_str(), s.size());
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132 }
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133
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134 return OrthancPluginErrorCode_Success;
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135 }
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136 catch (::Orthanc::OrthancException& e)
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137 {
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138 LOG(ERROR) << "Exception in database back-end: " << e.What();
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139 return static_cast<OrthancPluginErrorCode>(e.GetErrorCode());
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140 }
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141 catch (::std::runtime_error& e)
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142 {
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143 LOG(ERROR) << "Exception in database back-end: " << e.what();
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144 return OrthancPluginErrorCode_DatabasePlugin;
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145 }
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146 catch (...)
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147 {
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148 LOG(ERROR) << "Native exception";
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149 return OrthancPluginErrorCode_DatabasePlugin;
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150 }
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151 }
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152
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153 static void FinalizeBackend(void* rawBackend)
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154 {
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155 if (rawBackend != NULL)
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156 {
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157 IndexBackend* backend = reinterpret_cast<IndexBackend*>(rawBackend);
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158
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159 if (isBackendInUse_)
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160 {
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161 isBackendInUse_ = false;
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162 }
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163 else
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164 {
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165 LOG(ERROR) << "More than one index backend was registered, internal error";
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166 }
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167
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168 delete backend;
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169 }
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170 else
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171 {
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172 LOG(ERROR) << "Received a null pointer from the Orthanc core, internal error";
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173 }
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174 }
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175
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176
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177 void DatabaseBackendAdapterV4::Register(IndexBackend* backend,
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178 size_t countConnections,
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179 unsigned int maxDatabaseRetries)
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180 {
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181 std::unique_ptr<IndexBackend> protection(backend);
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182
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183 if (isBackendInUse_)
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184 {
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185 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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186 }
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187
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188 if (backend == NULL)
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189 {
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190 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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191 }
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192
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193 OrthancPluginContext* context = backend->GetContext();
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194
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195 if (OrthancPluginRegisterDatabaseBackendV4(context, protection.release(), maxDatabaseRetries,
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196 CallBackend, FinalizeBackend) != OrthancPluginErrorCode_Success)
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197 {
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198 delete backend;
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199 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "Unable to register the database backend");
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200 }
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201
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202 isBackendInUse_ = true;
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203 }
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204
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205
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206 void DatabaseBackendAdapterV4::Finalize()
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207 {
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208 if (isBackendInUse_)
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209 {
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210 LOG(ERROR) << "The Orthanc core has not destructed the index backend, internal error";
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211 }
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212 }
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213 }
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214
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215 # endif
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216 #endif