annotate Framework/MySQL/MySQLDatabase.cpp @ 357:fa4535e93b3d OrthancOdbc-1.1

clean NEWS in branch
author Alain Mazy <am@osimis.io>
date Mon, 06 Dec 2021 17:25:06 +0100
parents b8ba198a8df3
children 16aac0287485
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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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3236894320d6 upgrade to year 2021
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5 * Copyright (C) 2017-2021 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 "MySQLDatabase.h"
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23
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24 #include "../Common/ImplicitTransaction.h"
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25 #include "../Common/Integer64Value.h"
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26 #include "../Common/RetryDatabaseFactory.h"
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27 #include "MySQLResult.h"
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28 #include "MySQLStatement.h"
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29 #include "MySQLTransaction.h"
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30
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31 #include <Compatibility.h> // For std::unique_ptr<>
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32 #include <Logging.h>
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33 #include <OrthancException.h>
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34 #include <Toolbox.h>
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35
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36 #include <errmsg.h>
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37 #include <mysqld_error.h>
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38
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39 #include <memory>
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40 #include <boost/thread.hpp>
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41
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42 namespace OrthancDatabases
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43 {
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44 void MySQLDatabase::Close()
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45 {
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46 if (mysql_ != NULL)
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47 {
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48 LOG(INFO) << "Closing connection to MySQL database";
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49 mysql_close(mysql_);
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50 mysql_ = NULL;
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51 }
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52 }
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55 void MySQLDatabase::ThrowException()
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56 {
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57 LogError();
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58
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59 unsigned int error = mysql_errno(mysql_);
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60 if (error == CR_SERVER_GONE_ERROR ||
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61 error == CR_SERVER_LOST ||
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62 error == ER_QUERY_INTERRUPTED)
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63 {
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64 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseUnavailable);
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65 }
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66 else if (error == CR_COMMANDS_OUT_OF_SYNC)
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67 {
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68 #if !defined(MARIADB_VERSION_ID)
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69 LOG(ERROR) << "TODO - This error seems to be related to the use of libmysqlclient: Try to switch to mariadb-connector";
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70 #endif
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72 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseUnavailable);
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73 }
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74 else if (error == ER_LOCK_DEADLOCK)
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75 {
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76 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 9, 2)
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77 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseCannotSerialize);
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78 #else
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79 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Collision between multiple writers");
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80 #endif
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81 }
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82 else
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83 {
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84 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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85 }
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86 }
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88
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89 void MySQLDatabase::CheckErrorCode(int code)
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90 {
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91 if (code == 0)
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92 {
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93 return;
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94 }
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95 else
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96 {
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97 ThrowException();
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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 MySQLDatabase::MySQLDatabase(const MySQLParameters& parameters) :
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103 parameters_(parameters),
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104 mysql_(NULL)
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105 {
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106 }
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107
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108
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109 MySQLDatabase::~MySQLDatabase()
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110 {
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111 try
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112 {
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113 Close();
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114 }
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115 catch (Orthanc::OrthancException&)
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116 {
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117 // Ignore possible exceptions due to connection loss
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118 }
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119 }
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120
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121
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122 void MySQLDatabase::LogError()
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123 {
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124 if (mysql_ != NULL)
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125 {
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126 LOG(ERROR) << "MySQL error (" << mysql_errno(mysql_)
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127 << "," << mysql_sqlstate(mysql_)
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128 << "): " << mysql_error(mysql_);
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129 }
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130 }
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131
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132
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133 MYSQL* MySQLDatabase::GetObject()
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134 {
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135 if (mysql_ == NULL)
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136 {
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137 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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138 }
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139 else
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140 {
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141 return mysql_;
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142 }
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143 }
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144
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145
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146 void MySQLDatabase::OpenInternal(const char* db)
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147 {
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148 if (mysql_ != NULL)
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149 {
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150 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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151 }
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152
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153 mysql_ = mysql_init(NULL);
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154 if (mysql_ == NULL)
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155 {
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156 LOG(ERROR) << "Cannot initialize the MySQL connector";
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157 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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158 }
46
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159
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160 if (parameters_.GetUnixSocket().empty())
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161 {
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162 // Fallback to TCP connection if no UNIX socket is provided
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163 unsigned int protocol = MYSQL_PROTOCOL_TCP;
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164 mysql_options(mysql_, MYSQL_OPT_PROTOCOL, (unsigned int *) &protocol);
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165 }
163
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166
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167 if (parameters_.IsSsl())
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168 {
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169 if (parameters_.IsVerifyServerCertificates())
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170 {
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171 #if (MYSQL_VERSION_ID > 50110 && MYSQL_VERSION_ID < 80000) // Removed in MySQL client 8.0
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172 my_bool verifyCert = 1;
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173 mysql_options(mysql_, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, (void *) &verifyCert);
187
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174 #endif
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175
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176 mysql_options(mysql_, MYSQL_OPT_SSL_CA, (void *)(parameters_.GetSslCaCertificates()));
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177 }
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178
187
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179 #if (MYSQL_VERSION_ID > 50110 && MYSQL_VERSION_ID < 80000) // Removed in MySQL client 8.0
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180 my_bool enforceTls = 1;
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181 mysql_options(mysql_, MYSQL_OPT_SSL_ENFORCE, (void *) &enforceTls);
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182 #endif
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183 }
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184
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185 const char* socket = (parameters_.GetUnixSocket().empty() ? NULL :
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186 parameters_.GetUnixSocket().c_str());
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187
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188 if (mysql_real_connect(mysql_,
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189 parameters_.GetHost().c_str(),
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190 parameters_.GetUsername().c_str(),
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191 parameters_.GetPassword().c_str(), db,
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192 parameters_.GetPort(), socket, 0) == 0)
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193 {
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194 LogError();
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195 Close();
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196 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseUnavailable);
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197 }
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198 else
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199 {
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200 LOG(INFO) << "Successful connection to MySQL database";
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201 }
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202
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203 if (mysql_set_character_set(mysql_, "utf8mb4") != 0)
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204 {
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205 LOG(ERROR) << "Cannot set the character set to UTF8";
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206 Close();
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207 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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208 }
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209 }
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210
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211
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212 void MySQLDatabase::Open()
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213 {
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214 if (parameters_.GetDatabase().empty())
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215 {
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216 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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217 }
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218 else
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219 {
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220 OpenInternal(parameters_.GetDatabase().c_str());
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221 }
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222 }
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223
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224
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225 void MySQLDatabase::ClearDatabase(const MySQLParameters& parameters)
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226 {
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227 MySQLDatabase db(parameters);
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228 db.OpenRoot();
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229
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230 const std::string& database = parameters.GetDatabase();
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231
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232 {
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233 MySQLTransaction t(db, TransactionType_ReadWrite);
23
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234
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235 if (!db.DoesDatabaseExist(t, database))
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236 {
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237 LOG(ERROR) << "Inexistent database, please create it first: " << database;
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238 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource);
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239 }
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240
237
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241 db.ExecuteMultiLines("DROP DATABASE " + database, false);
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242 db.ExecuteMultiLines("CREATE DATABASE " + database, false);
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243 t.Commit();
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244 }
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245 }
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246
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247
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248 namespace
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249 {
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250 class ResultWrapper : public boost::noncopyable
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251 {
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252 private:
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253 MYSQL_RES *result_;
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254
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255 public:
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256 ResultWrapper(MySQLDatabase& mysql,
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257 const std::string& sql) :
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258 result_(NULL)
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259 {
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260 if (mysql_real_query(mysql.GetObject(), sql.c_str(), sql.size()))
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261 {
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262 mysql.LogError();
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263 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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264 }
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265
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266 result_ = mysql_use_result(mysql.GetObject());
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267 if (result_ == NULL)
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268 {
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269 mysql.LogError();
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270 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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271 }
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272 }
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273
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274 ~ResultWrapper()
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275 {
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276 if (result_ != NULL)
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277 {
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278 mysql_free_result(result_);
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279 result_ = NULL;
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280 }
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281 }
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282
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283 MYSQL_RES *GetObject()
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284 {
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285 return result_;
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286 }
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287 };
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288 }
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289
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290
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291 bool MySQLDatabase::LookupGlobalStringVariable(std::string& value,
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292 const std::string& variable)
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293 {
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294 ResultWrapper result(*this, "SELECT @@global." + variable);
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295
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296 MYSQL_ROW row = mysql_fetch_row(result.GetObject());
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297 if (mysql_errno(mysql_) == 0 &&
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298 row &&
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299 row[0])
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300 {
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301 value = std::string(row[0]);
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302 return true;
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303 }
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diff changeset
304 else
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305 {
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306 return false;
0
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307 }
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308 }
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309
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310
16
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311 bool MySQLDatabase::LookupGlobalIntegerVariable(int64_t& value,
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312 const std::string& variable)
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313 {
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314 std::string s;
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315
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316 if (LookupGlobalStringVariable(s, variable))
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317 {
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318 try
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319 {
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320 value = boost::lexical_cast<int64_t>(s);
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321 return true;
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322 }
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323 catch (boost::bad_lexical_cast&)
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324 {
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325 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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326 }
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327 }
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328 else
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329 {
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330 return false;
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331 }
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332 }
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333
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334
137
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335 bool MySQLDatabase::RunAdvisoryLockStatement(Query& query,
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336 const std::string& lock)
135
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337 {
137
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338 const std::string& dbName = parameters_.GetDatabase();
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339
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340 // Prepend the name of the lock by the database name. This allows
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341 // to create a namespace for advisory locks:
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342 // https://groups.google.com/d/msg/orthanc-users/yV3LSTh_TjI/MQIcvnMlAQAJ
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343 std::string prefix;
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344 prefix.reserve(dbName.size());
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345 for (size_t i = 0; i < dbName.size(); i++)
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346 {
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347 if (isalnum(dbName[i]) ||
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348 dbName[i] == '$' ||
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349 dbName[i] == '_')
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350 {
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351 prefix.push_back(dbName[i]);
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352 }
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353 }
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354
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355 query.SetType("lock", ValueType_Utf8String);
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356
135
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357 Dictionary args;
137
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358 args.SetUtf8Value("lock", prefix + "." + lock);
135
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359
137
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360 bool success;
135
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361
137
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362 {
186
6fe74f9a516e cppcheck
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363 MySQLStatement statement(*this, query);
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364
217
ee5858d438dc TransactionType given to MySQLTransaction constructor
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365 MySQLTransaction t(*this, TransactionType_ReadWrite);
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366 std::unique_ptr<IResult> result(t.Execute(statement, args));
135
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367
137
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368 success = (!result->IsDone() &&
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369 result->GetField(0).GetType() == ValueType_Integer64 &&
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370 dynamic_cast<const Integer64Value&>(result->GetField(0)).GetValue() == 1);
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371
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372 t.Commit();
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373 }
135
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diff changeset
374
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375 return success;
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diff changeset
376 }
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parents: 67
diff changeset
377
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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diff changeset
378
137
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379 bool MySQLDatabase::AcquireAdvisoryLock(const std::string& lock)
135
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diff changeset
380 {
137
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381 Query query("SELECT GET_LOCK(${lock}, 0)", false);
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382 return RunAdvisoryLockStatement(query, lock);
135
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diff changeset
383 }
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parents: 67
diff changeset
384
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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diff changeset
385
137
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386 bool MySQLDatabase::ReleaseAdvisoryLock(const std::string& lock)
135
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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diff changeset
387 {
137
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388 Query query("SELECT RELEASE_LOCK(${lock})", false);
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diff changeset
389 return RunAdvisoryLockStatement(query, lock);
135
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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parents: 67
diff changeset
390 }
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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parents: 67
diff changeset
391
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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parents: 67
diff changeset
392
137
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diff changeset
393 void MySQLDatabase::AdvisoryLock(const std::string& lock)
16
9e419261f1c9 mysql storage area working
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diff changeset
394 {
135
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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parents: 67
diff changeset
395 if (!AcquireAdvisoryLock(lock))
16
9e419261f1c9 mysql storage area working
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parents: 6
diff changeset
396 {
9e419261f1c9 mysql storage area working
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parents: 6
diff changeset
397 LOG(ERROR) << "The MySQL database is locked by another instance of Orthanc";
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diff changeset
398 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database);
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parents: 6
diff changeset
399 }
9e419261f1c9 mysql storage area working
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parents: 6
diff changeset
400 }
22
1e9bad493475 prevent running unit tests on a non-existing db
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 16
diff changeset
401
1e9bad493475 prevent running unit tests on a non-existing db
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parents: 16
diff changeset
402
0
7cea966b6829 initial commit
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parents:
diff changeset
403 bool MySQLDatabase::DoesTableExist(MySQLTransaction& transaction,
7cea966b6829 initial commit
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parents:
diff changeset
404 const std::string& name)
7cea966b6829 initial commit
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parents:
diff changeset
405 {
7cea966b6829 initial commit
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parents:
diff changeset
406 if (mysql_ == NULL)
7cea966b6829 initial commit
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parents:
diff changeset
407 {
7cea966b6829 initial commit
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parents:
diff changeset
408 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
7cea966b6829 initial commit
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parents:
diff changeset
409 }
7cea966b6829 initial commit
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parents:
diff changeset
410
60
412e30336847 allowing dollars and underscores in MySQL database identifiers
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 46
diff changeset
411 if (!IsValidDatabaseIdentifier(name))
24
17f849b2af34 sharing plugin initialization code
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 23
diff changeset
412 {
17f849b2af34 sharing plugin initialization code
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parents: 23
diff changeset
413 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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parents: 23
diff changeset
414 }
22
1e9bad493475 prevent running unit tests on a non-existing db
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parents: 16
diff changeset
415
0
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
416 Query query("SELECT COUNT(*) FROM information_schema.TABLES WHERE "
7cea966b6829 initial commit
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parents:
diff changeset
417 "(TABLE_SCHEMA = ${database}) AND (TABLE_NAME = ${table})", true);
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diff changeset
418 query.SetType("database", ValueType_Utf8String);
7cea966b6829 initial commit
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diff changeset
419 query.SetType("table", ValueType_Utf8String);
7cea966b6829 initial commit
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parents:
diff changeset
420
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diff changeset
421 MySQLStatement statement(*this, query);
7cea966b6829 initial commit
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parents:
diff changeset
422
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423 Dictionary args;
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diff changeset
424 args.SetUtf8Value("database", parameters_.GetDatabase());
7cea966b6829 initial commit
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425 args.SetUtf8Value("table", name);
7cea966b6829 initial commit
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426
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427 std::unique_ptr<IResult> result(statement.Execute(transaction, args));
0
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diff changeset
428 return (!result->IsDone() &&
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429 result->GetFieldsCount() == 1 &&
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diff changeset
430 result->GetField(0).GetType() == ValueType_Integer64 &&
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431 dynamic_cast<const Integer64Value&>(result->GetField(0)).GetValue() == 1);
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432 }
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433
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434
22
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435 bool MySQLDatabase::DoesDatabaseExist(MySQLTransaction& transaction,
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436 const std::string& name)
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diff changeset
437 {
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438 if (mysql_ == NULL)
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diff changeset
439 {
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diff changeset
440 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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441 }
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442
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diff changeset
443 if (!IsValidDatabaseIdentifier(name))
24
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444 {
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445 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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446 }
22
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447
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448 Query query("SELECT COUNT(*) FROM information_schema.SCHEMATA "
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449 "WHERE SCHEMA_NAME = ${database}", true);
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450 query.SetType("database", ValueType_Utf8String);
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451
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452 MySQLStatement statement(*this, query);
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453
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454 Dictionary args;
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455 args.SetUtf8Value("database", name);
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456
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457 std::unique_ptr<IResult> result(statement.Execute(transaction, args));
22
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458 return (!result->IsDone() &&
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459 result->GetFieldsCount() == 1 &&
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460 result->GetField(0).GetType() == ValueType_Integer64 &&
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diff changeset
461 dynamic_cast<const Integer64Value&>(result->GetField(0)).GetValue() == 1);
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462 }
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463
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464
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465 bool MySQLDatabase::DoesTriggerExist(MySQLTransaction& transaction,
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466 const std::string& name)
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467 {
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468 if (mysql_ == NULL)
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469 {
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470 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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471 }
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472
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473 if (!IsValidDatabaseIdentifier(name))
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474 {
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475 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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476 }
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477
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478 Query query("SELECT COUNT(*) FROM information_schema.TRIGGERS "
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diff changeset
479 "WHERE TRIGGER_NAME = ${trigger}", true);
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480 query.SetType("trigger", ValueType_Utf8String);
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481
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482 MySQLStatement statement(*this, query);
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483
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484 Dictionary args;
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485 args.SetUtf8Value("trigger", name);
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486
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487 std::unique_ptr<IResult> result(statement.Execute(transaction, args));
144
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488 return (!result->IsDone() &&
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489 result->GetFieldsCount() == 1 &&
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490 result->GetField(0).GetType() == ValueType_Integer64 &&
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491 dynamic_cast<const Integer64Value&>(result->GetField(0)).GetValue() != 0);
144
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492 }
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493
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494
237
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495 void MySQLDatabase::ExecuteMultiLines(const std::string& sql,
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496 bool arobaseSeparator)
0
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497 {
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498 if (mysql_ == NULL)
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499 {
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diff changeset
500 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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501 }
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502
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503 // This emulates the behavior of "CLIENT_MULTI_STATEMENTS" in
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504 // "mysql_real_connect()", avoiding to implement a loop over
7cea966b6829 initial commit
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505 // "mysql_query()"
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506 std::vector<std::string> commands;
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507 Orthanc::Toolbox::TokenizeString(commands, sql, ';');
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508
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509 for (size_t i = 0; i < commands.size(); i++)
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510 {
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diff changeset
511 std::string s = Orthanc::Toolbox::StripSpaces(commands[i]);
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parents:
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512
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parents:
diff changeset
513 if (!s.empty())
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parents:
diff changeset
514 {
16
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parents: 6
diff changeset
515 if (arobaseSeparator)
9e419261f1c9 mysql storage area working
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diff changeset
516 {
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parents: 6
diff changeset
517 // Replace the escape character "@" by a semicolon
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diff changeset
518 std::replace(s.begin(), s.end(), '@', ';');
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diff changeset
519 }
0
7cea966b6829 initial commit
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520
7cea966b6829 initial commit
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521 LOG(TRACE) << "MySQL: " << s;
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522 CheckErrorCode(mysql_query(mysql_, s.c_str()));
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523 }
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524 }
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parents:
diff changeset
525 }
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diff changeset
526
7cea966b6829 initial commit
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diff changeset
527
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528 IPrecompiledStatement* MySQLDatabase::Compile(const Query& query)
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529 {
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parents:
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530 if (mysql_ == NULL)
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parents:
diff changeset
531 {
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parents:
diff changeset
532 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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parents:
diff changeset
533 }
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diff changeset
534
7cea966b6829 initial commit
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diff changeset
535 return new MySQLStatement(*this, query);
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536 }
7cea966b6829 initial commit
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
537
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parents:
diff changeset
538
23
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diff changeset
539
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parents: 22
diff changeset
540 namespace
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diff changeset
541 {
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diff changeset
542 class MySQLImplicitTransaction : public ImplicitTransaction
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parents: 22
diff changeset
543 {
237
35598014f140 refactoring to remove GlobalProperties.cpp
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diff changeset
544 private:
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diff changeset
545 MySQLDatabase& db_;
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diff changeset
546
23
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diff changeset
547 protected:
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parents: 22
diff changeset
548 virtual IResult* ExecuteInternal(IPrecompiledStatement& statement,
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parents: 255
diff changeset
549 const Dictionary& parameters) ORTHANC_OVERRIDE
23
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diff changeset
550 {
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diff changeset
551 return dynamic_cast<MySQLStatement&>(statement).Execute(*this, parameters);
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parents: 22
diff changeset
552 }
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parents: 22
diff changeset
553
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diff changeset
554 virtual void ExecuteWithoutResultInternal(IPrecompiledStatement& statement,
280
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parents: 255
diff changeset
555 const Dictionary& parameters) ORTHANC_OVERRIDE
23
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parents: 22
diff changeset
556 {
b2ff1cd2907a handling of implicit transactions in DatabaseManager
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diff changeset
557 dynamic_cast<MySQLStatement&>(statement).ExecuteWithoutResult(*this, parameters);
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diff changeset
558 }
237
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parents: 236
diff changeset
559
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diff changeset
560 public:
252
33fa478c119a cppcheck
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diff changeset
561 explicit MySQLImplicitTransaction(MySQLDatabase& db) :
237
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diff changeset
562 db_(db)
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parents: 236
diff changeset
563 {
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diff changeset
564 }
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diff changeset
565
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diff changeset
566 virtual bool DoesTableExist(const std::string& name) ORTHANC_OVERRIDE
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diff changeset
567 {
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diff changeset
568 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "An explicit transaction is needed");
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diff changeset
569 }
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diff changeset
570
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571 virtual bool DoesTriggerExist(const std::string& name) ORTHANC_OVERRIDE
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572 {
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573 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "An explicit transaction is needed");
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diff changeset
574 }
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diff changeset
575
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diff changeset
576 virtual void ExecuteMultiLines(const std::string& query) ORTHANC_OVERRIDE
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diff changeset
577 {
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578 db_.ExecuteMultiLines(query, false /* don't deal with arobases */);
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diff changeset
579 }
23
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diff changeset
580 };
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parents: 22
diff changeset
581 }
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parents: 22
diff changeset
582
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583
215
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584 ITransaction* MySQLDatabase::CreateTransaction(TransactionType type)
0
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585 {
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parents:
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586 if (mysql_ == NULL)
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parents:
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587 {
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588 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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589 }
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590
215
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591 switch (type)
23
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diff changeset
592 {
215
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593 case TransactionType_Implicit:
237
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594 return new MySQLImplicitTransaction(*this);
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595
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596 case TransactionType_ReadOnly:
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597 case TransactionType_ReadWrite:
217
ee5858d438dc TransactionType given to MySQLTransaction constructor
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598 return new MySQLTransaction(*this, type);
215
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599
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parents: 193
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600 default:
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601 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
23
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parents: 22
diff changeset
602 }
0
7cea966b6829 initial commit
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603 }
7cea966b6829 initial commit
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parents:
diff changeset
604
7cea966b6829 initial commit
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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605
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parents:
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606 void MySQLDatabase::GlobalFinalization()
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parents:
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607 {
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parents:
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608 mysql_library_end();
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parents:
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609 }
24
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parents: 23
diff changeset
610
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611
60
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612 bool MySQLDatabase::IsValidDatabaseIdentifier(const std::string& s)
24
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parents: 23
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613 {
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parents: 23
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614 for (size_t i = 0; i < s.length(); i++)
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parents: 23
diff changeset
615 {
60
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parents: 46
diff changeset
616 // https://dev.mysql.com/doc/refman/8.0/en/identifiers.html
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parents: 46
diff changeset
617 if (!isalnum(s[i]) &&
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parents: 46
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618 s[i] != '$' &&
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parents: 46
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619 s[i] != '_')
24
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parents: 23
diff changeset
620 {
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parents: 23
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621 return false;
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parents: 23
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622 }
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parents: 23
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623 }
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624
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parents: 23
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625 return true;
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parents: 23
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626 }
135
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627
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parents: 67
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628
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629 MySQLDatabase::TransientAdvisoryLock::
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630 TransientAdvisoryLock(MySQLDatabase& database,
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631 const std::string& lock) :
135
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632 database_(database),
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633 lock_(lock)
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634 {
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diff changeset
635 bool locked = true;
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636
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diff changeset
637 for (unsigned int i = 0; i < 10; i++)
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parents: 67
diff changeset
638 {
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parents: 67
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639 if (database_.AcquireAdvisoryLock(lock_))
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parents: 67
diff changeset
640 {
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parents: 67
diff changeset
641 locked = false;
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parents: 67
diff changeset
642 break;
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parents: 67
diff changeset
643 }
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parents: 67
diff changeset
644 else
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parents: 67
diff changeset
645 {
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parents: 67
diff changeset
646 boost::this_thread::sleep(boost::posix_time::milliseconds(500));
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parents: 67
diff changeset
647 }
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parents: 67
diff changeset
648 }
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parents: 67
diff changeset
649
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parents: 67
diff changeset
650 if (locked)
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parents: 67
diff changeset
651 {
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diff changeset
652 LOG(ERROR) << "Cannot acquire a transient advisory lock";
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parents: 67
diff changeset
653 throw Orthanc::OrthancException(Orthanc::ErrorCode_Plugin);
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parents: 67
diff changeset
654 }
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parents: 67
diff changeset
655 }
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parents: 67
diff changeset
656
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parents: 67
diff changeset
657
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parents: 67
diff changeset
658 MySQLDatabase::TransientAdvisoryLock::~TransientAdvisoryLock()
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parents: 67
diff changeset
659 {
e26690365c25 MySQL: Added an advisory lock to avoid race conditions during database setup
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diff changeset
660 database_.ReleaseAdvisoryLock(lock_);
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diff changeset
661 }
226
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diff changeset
662
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diff changeset
663
255
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664 class MySQLDatabase::Factory : public RetryDatabaseFactory
226
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665 {
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666 private:
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667 MySQLParameters parameters_;
226
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668
255
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669 protected:
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670 virtual IDatabase* TryOpen()
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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diff changeset
671 {
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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diff changeset
672 std::unique_ptr<MySQLDatabase> db(new MySQLDatabase(parameters_));
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673 db->Open();
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diff changeset
674 db->ExecuteMultiLines("SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE", false);
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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675 return db.release();
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diff changeset
676 }
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677
255
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diff changeset
678 public:
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679 explicit Factory(const MySQLParameters& parameters) :
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680 RetryDatabaseFactory(parameters.GetMaxConnectionRetries(),
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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diff changeset
681 parameters.GetConnectionRetryInterval()),
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diff changeset
682 parameters_(parameters)
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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683 {
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diff changeset
684 }
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diff changeset
685 };
226
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686
255
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687
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diff changeset
688 IDatabaseFactory* MySQLDatabase::CreateDatabaseFactory(const MySQLParameters& parameters)
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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diff changeset
689 {
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diff changeset
690 return new Factory(parameters);
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parents: 252
diff changeset
691 }
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diff changeset
692
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diff changeset
693
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694 MySQLDatabase* MySQLDatabase::CreateDatabaseConnection(const MySQLParameters& parameters)
d663d9e44f8d reintroduction of IDatabaseFactory into DatabaseManager
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diff changeset
695 {
226
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diff changeset
696 Factory factory(parameters);
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diff changeset
697 return dynamic_cast<MySQLDatabase*>(factory.Open());
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diff changeset
698 }
0
7cea966b6829 initial commit
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diff changeset
699 }