Mercurial > hg > orthanc-databases
annotate MySQL/Plugins/MySQLStorageArea.cpp @ 388:6aa19614ca20 db-protobuf
implemented protobuf for odbc
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 05 Apr 2023 11:14:10 +0200 |
| parents | 16aac0287485 |
| children | 3d6886f3e5b3 |
| rev | line source |
|---|---|
| 17 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 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 |
| 17 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
| 9 * modify it under the terms of the GNU Affero General Public License | |
| 10 * as published by the Free Software Foundation, either version 3 of | |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 * Affero General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU Affero General Public License | |
| 19 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 **/ | |
| 21 | |
| 22 | |
| 23 #include "MySQLStorageArea.h" | |
| 24 | |
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25 #include "../../Framework/Common/BinaryStringValue.h" |
| 17 | 26 #include "../../Framework/MySQL/MySQLDatabase.h" |
| 27 #include "../../Framework/MySQL/MySQLTransaction.h" | |
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28 #include "MySQLDefinitions.h" |
| 17 | 29 |
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30 #include <Compatibility.h> // For std::unique_ptr<> |
| 152 | 31 #include <Logging.h> |
| 17 | 32 |
| 33 #include <boost/math/special_functions/round.hpp> | |
| 34 | |
| 35 | |
| 36 namespace OrthancDatabases | |
| 37 { | |
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38 void MySQLStorageArea::ConfigureDatabase(MySQLDatabase& db, |
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39 const MySQLParameters& parameters, |
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40 bool clearAll) |
| 17 | 41 { |
| 42 { | |
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43 MySQLDatabase::TransientAdvisoryLock lock(db, MYSQL_LOCK_DATABASE_SETUP); |
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44 MySQLTransaction t(db, TransactionType_ReadWrite); |
| 17 | 45 |
| 46 int64_t size; | |
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47 if (db.LookupGlobalIntegerVariable(size, "max_allowed_packet")) |
| 17 | 48 { |
| 49 int mb = boost::math::iround(static_cast<double>(size) / | |
| 50 static_cast<double>(1024 * 1024)); | |
| 51 LOG(WARNING) << "Your MySQL server cannot " | |
| 52 << "store DICOM files larger than " << mb << "MB"; | |
| 53 LOG(WARNING) << " => Consider increasing \"max_allowed_packet\" " | |
| 54 << "in \"my.cnf\" if this limit is insufficient for your use"; | |
| 55 } | |
| 56 else | |
| 57 { | |
| 58 LOG(WARNING) << "Unable to auto-detect the maximum size of DICOM " | |
| 59 << "files that can be stored in this MySQL server"; | |
| 60 } | |
| 61 | |
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62 if (clearAll) |
| 17 | 63 { |
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64 db.ExecuteMultiLines("DROP TABLE IF EXISTS StorageArea", false); |
| 17 | 65 } |
| 66 | |
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67 db.ExecuteMultiLines("CREATE TABLE IF NOT EXISTS StorageArea(" |
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68 "uuid VARCHAR(64) NOT NULL PRIMARY KEY," |
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69 "content LONGBLOB NOT NULL," |
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70 "type INTEGER NOT NULL)", false); |
| 17 | 71 |
| 72 t.Commit(); | |
| 73 } | |
| 74 | |
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75 /** |
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76 * WARNING: This lock must be acquired after |
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77 * "MYSQL_LOCK_DATABASE_SETUP" is released. Indeed, in MySQL < |
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78 * 5.7, it is impossible to acquire more than one lock at a time, |
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79 * as calling "SELECT GET_LOCK()" releases all the |
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80 * previously-acquired locks. |
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81 * https://dev.mysql.com/doc/refman/5.7/en/locking-functions.html |
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82 **/ |
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83 if (parameters.HasLock()) |
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84 { |
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85 db.AdvisoryLock(MYSQL_LOCK_STORAGE); |
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86 } |
| 17 | 87 } |
| 88 | |
| 89 | |
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90 MySQLStorageArea::MySQLStorageArea(const MySQLParameters& parameters, |
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91 bool clearAll) : |
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92 StorageBackend(MySQLDatabase::CreateDatabaseFactory(parameters), |
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93 parameters.GetMaxConnectionRetries()) |
| 17 | 94 { |
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95 { |
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96 AccessorBase accessor(*this); |
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97 MySQLDatabase& database = dynamic_cast<MySQLDatabase&>(accessor.GetManager().GetDatabase()); |
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98 ConfigureDatabase(database, parameters, clearAll); |
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99 } |
| 17 | 100 } |
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101 |
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102 |
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103 class MySQLStorageArea::Accessor : public StorageBackend::AccessorBase |
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104 { |
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105 public: |
| 252 | 106 explicit Accessor(MySQLStorageArea& backend) : |
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107 AccessorBase(backend) |
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108 { |
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109 } |
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110 |
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111 virtual void ReadRange(IFileContentVisitor& visitor, |
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112 const std::string& uuid, |
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113 OrthancPluginContentType type, |
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114 uint64_t start, |
| 250 | 115 size_t length) ORTHANC_OVERRIDE |
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116 { |
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117 DatabaseManager::Transaction transaction(GetManager(), TransactionType_ReadOnly); |
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118 |
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119 { |
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120 // https://stackoverflow.com/a/6545557/881731 |
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121 DatabaseManager::CachedStatement statement( |
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122 STATEMENT_FROM_HERE, GetManager(), |
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123 "SELECT SUBSTRING(content, ${start}, ${length}) FROM StorageArea WHERE uuid=${uuid} AND type=${type}"); |
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124 |
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125 statement.SetParameterType("uuid", ValueType_Utf8String); |
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126 statement.SetParameterType("type", ValueType_Integer64); |
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127 statement.SetParameterType("start", ValueType_Integer64); |
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128 statement.SetParameterType("length", ValueType_Integer64); |
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129 |
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130 Dictionary args; |
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131 args.SetUtf8Value("uuid", uuid); |
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132 args.SetIntegerValue("type", type); |
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133 args.SetIntegerValue("length", length); |
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134 |
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135 /** |
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136 * "For all forms of SUBSTRING(), the position of the first |
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137 * character in the string from which the substring is to be |
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138 * extracted is reckoned as 1." => hence the "+ 1" |
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139 * https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_substring |
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140 **/ |
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141 args.SetIntegerValue("start", start + 1); |
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142 |
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143 statement.Execute(args); |
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144 |
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145 if (statement.IsDone()) |
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146 { |
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147 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource); |
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148 } |
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149 else if (statement.GetResultFieldsCount() != 1) |
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150 { |
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151 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); |
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152 } |
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153 else |
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154 { |
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155 const IValue& value = statement.GetResultField(0); |
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156 |
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157 if (value.GetType() == ValueType_BinaryString) |
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158 { |
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159 const std::string& content = dynamic_cast<const BinaryStringValue&>(value).GetContent(); |
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160 |
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161 if (static_cast<uint64_t>(content.size()) == length) |
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162 { |
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163 visitor.Assign(content); |
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164 } |
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165 else |
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166 { |
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167 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadRange); |
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168 } |
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169 } |
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170 else |
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171 { |
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172 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); |
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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 transaction.Commit(); |
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178 |
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179 if (!visitor.IsSuccess()) |
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180 { |
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181 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Could not read range from the storage area"); |
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182 } |
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183 } |
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184 }; |
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185 |
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186 |
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187 StorageBackend::IAccessor* MySQLStorageArea::CreateAccessor() |
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188 { |
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189 return new Accessor(*this); |
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190 } |
| 17 | 191 } |