Mercurial > hg > orthanc-databases
annotate Framework/PostgreSQL/PostgreSQLStatement.cpp @ 507:54d518dcd74a
updated copyright, as Orthanc Team now replaces Osimis
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 30 May 2024 21:47:02 +0200 |
| parents | f0976163dbe1 |
| children | c49136b34891 |
| rev | line source |
|---|---|
| 0 | 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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 8 * |
| 9 * This program is free software: you can redistribute it and/or | |
| 10 * modify it under the terms of the GNU Affero General Public License | |
| 11 * as published by the Free Software Foundation, either version 3 of | |
| 12 * the License, or (at your option) any later version. | |
| 13 * | |
| 14 * This program is distributed in the hope that it will be useful, but | |
| 15 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 * Affero General Public License for more details. | |
| 18 * | |
| 19 * You should have received a copy of the GNU Affero General Public License | |
| 20 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 21 **/ | |
| 22 | |
| 23 | |
|
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24 #include "PostgreSQLIncludes.h" // Must be the first |
| 105 | 25 #include "PostgreSQLStatement.h" |
| 0 | 26 |
| 27 #include "../Common/BinaryStringValue.h" | |
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28 #include "../Common/InputFileValue.h" |
| 0 | 29 #include "../Common/Integer64Value.h" |
| 30 #include "../Common/NullValue.h" | |
| 31 #include "../Common/ResultBase.h" | |
| 32 #include "../Common/Utf8StringValue.h" | |
| 33 #include "PostgreSQLResult.h" | |
| 34 | |
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35 #include <Compatibility.h> // For std::unique_ptr<> |
| 152 | 36 #include <Logging.h> |
| 37 #include <OrthancException.h> | |
| 38 #include <Toolbox.h> | |
| 39 #include <Endianness.h> | |
| 0 | 40 |
| 41 #include <cassert> | |
| 42 | |
| 43 | |
| 44 namespace OrthancDatabases | |
| 45 { | |
| 46 class PostgreSQLStatement::Inputs : public boost::noncopyable | |
| 47 { | |
| 48 private: | |
| 49 std::vector<char*> values_; | |
| 50 std::vector<int> sizes_; | |
| 51 | |
| 52 static char* Allocate(const void* source, int size) | |
| 53 { | |
| 54 if (size == 0) | |
| 55 { | |
| 56 return NULL; | |
| 57 } | |
| 58 else | |
| 59 { | |
| 60 char* ptr = reinterpret_cast<char*>(malloc(size)); | |
| 61 | |
| 62 if (source != NULL) | |
| 63 { | |
| 64 memcpy(ptr, source, size); | |
| 65 } | |
| 66 | |
| 67 return ptr; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 void Resize(size_t size) | |
| 72 { | |
| 73 // Shrinking of the vector | |
| 74 for (size_t i = size; i < values_.size(); i++) | |
| 75 { | |
| 76 if (values_[i] != NULL) | |
| 77 free(values_[i]); | |
| 78 } | |
| 79 | |
| 80 values_.resize(size, NULL); | |
| 81 sizes_.resize(size, 0); | |
| 82 } | |
| 83 | |
| 84 void EnlargeForIndex(size_t index) | |
| 85 { | |
| 86 if (index >= values_.size()) | |
| 87 { | |
| 88 // The vector is too small | |
| 89 Resize(index + 1); | |
| 90 } | |
| 91 } | |
| 92 | |
| 93 public: | |
| 94 Inputs() | |
| 95 { | |
| 96 } | |
| 97 | |
| 98 ~Inputs() | |
| 99 { | |
| 100 Resize(0); | |
| 101 } | |
| 102 | |
| 103 void SetItem(size_t pos, const void* source, int size) | |
| 104 { | |
| 105 EnlargeForIndex(pos); | |
| 106 | |
| 107 if (sizes_[pos] == size) | |
| 108 { | |
| 109 if (source && size != 0) | |
| 110 { | |
| 111 memcpy(values_[pos], source, size); | |
| 112 } | |
| 113 } | |
| 114 else | |
| 115 { | |
| 116 if (values_[pos] != NULL) | |
| 117 { | |
| 118 free(values_[pos]); | |
| 119 } | |
| 120 | |
| 121 values_[pos] = Allocate(source, size); | |
| 122 sizes_[pos] = size; | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 void SetItem(size_t pos, int size) | |
| 127 { | |
| 128 SetItem(pos, NULL, size); | |
| 129 } | |
| 130 | |
| 131 void* GetItem(size_t pos) const | |
| 132 { | |
| 133 if (pos >= values_.size()) | |
| 134 { | |
| 135 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 136 } | |
| 137 | |
| 138 return values_[pos]; | |
| 139 } | |
| 140 | |
| 141 const std::vector<char*>& GetValues() const | |
| 142 { | |
| 143 return values_; | |
| 144 } | |
| 145 | |
| 146 const std::vector<int>& GetSizes() const | |
| 147 { | |
| 148 return sizes_; | |
| 149 } | |
| 150 }; | |
| 151 | |
| 152 | |
| 153 void PostgreSQLStatement::Prepare() | |
| 154 { | |
| 155 if (id_.size() > 0) | |
| 156 { | |
| 157 // Already prepared | |
| 158 return; | |
| 159 } | |
| 160 | |
| 161 for (size_t i = 0; i < oids_.size(); i++) | |
| 162 { | |
| 163 if (oids_[i] == 0) | |
| 164 { | |
| 165 // The type of an input parameter was not set | |
| 166 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 id_ = Orthanc::Toolbox::GenerateUuid(); | |
| 171 | |
| 172 const unsigned int* tmp = oids_.size() ? &oids_[0] : NULL; | |
| 173 | |
| 174 PGresult* result = PQprepare(reinterpret_cast<PGconn*>(database_.pg_), | |
| 175 id_.c_str(), sql_.c_str(), oids_.size(), tmp); | |
| 176 | |
| 177 if (result == NULL) | |
| 178 { | |
| 179 id_.clear(); | |
| 180 database_.ThrowException(true); | |
| 181 } | |
| 182 | |
| 183 bool ok = (PQresultStatus(result) == PGRES_COMMAND_OK); | |
| 184 if (ok) | |
| 185 { | |
| 186 PQclear(result); | |
| 187 } | |
| 188 else | |
| 189 { | |
| 190 std::string message = PQresultErrorMessage(result); | |
| 191 PQclear(result); | |
| 192 id_.clear(); | |
| 193 LOG(ERROR) << "PostgreSQL error: " << message; | |
| 194 database_.ThrowException(false); | |
| 195 } | |
| 196 } | |
| 197 | |
| 198 | |
| 199 void PostgreSQLStatement::Unprepare() | |
| 200 { | |
| 201 if (id_.size() > 0) | |
| 202 { | |
| 203 // "Although there is no libpq function for deleting a | |
| 204 // prepared statement, the SQL DEALLOCATE statement can be | |
| 205 // used for that purpose." | |
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206 database_.ExecuteMultiLines("DEALLOCATE \"" + id_ + "\""); |
| 0 | 207 } |
| 208 | |
| 209 id_.clear(); | |
| 210 } | |
| 211 | |
| 212 | |
| 213 void PostgreSQLStatement::DeclareInputInternal(unsigned int param, | |
| 214 unsigned int /*Oid*/ type) | |
| 215 { | |
| 216 Unprepare(); | |
| 217 | |
| 218 if (oids_.size() <= param) | |
| 219 { | |
| 220 oids_.resize(param + 1, 0); | |
| 221 binary_.resize(param + 1); | |
| 222 } | |
| 223 | |
| 224 oids_[param] = type; | |
| 225 binary_[param] = (type == TEXTOID || type == BYTEAOID || type == OIDOID) ? 0 : 1; | |
| 226 } | |
| 227 | |
| 228 | |
| 229 void PostgreSQLStatement::DeclareInputInteger(unsigned int param) | |
| 230 { | |
| 231 DeclareInputInternal(param, INT4OID); | |
| 232 } | |
| 233 | |
| 234 | |
| 235 void PostgreSQLStatement::DeclareInputInteger64(unsigned int param) | |
| 236 { | |
| 237 DeclareInputInternal(param, INT8OID); | |
| 238 } | |
| 239 | |
| 240 | |
| 241 void PostgreSQLStatement::DeclareInputString(unsigned int param) | |
| 242 { | |
| 243 DeclareInputInternal(param, TEXTOID); | |
| 244 } | |
| 245 | |
| 246 | |
| 247 void PostgreSQLStatement::DeclareInputBinary(unsigned int param) | |
| 248 { | |
| 249 DeclareInputInternal(param, BYTEAOID); | |
| 250 } | |
| 251 | |
| 252 | |
| 253 void PostgreSQLStatement::DeclareInputLargeObject(unsigned int param) | |
| 254 { | |
| 255 DeclareInputInternal(param, OIDOID); | |
| 256 } | |
| 257 | |
| 258 | |
| 259 void* /* PGresult* */ PostgreSQLStatement::Execute() | |
| 260 { | |
| 261 Prepare(); | |
| 262 | |
| 263 PGresult* result; | |
| 264 | |
| 265 if (oids_.size() == 0) | |
| 266 { | |
| 267 // No parameter | |
| 268 result = PQexecPrepared(reinterpret_cast<PGconn*>(database_.pg_), | |
| 269 id_.c_str(), 0, NULL, NULL, NULL, 1); | |
| 270 } | |
| 271 else | |
| 272 { | |
| 273 // At least 1 parameter | |
| 274 result = PQexecPrepared(reinterpret_cast<PGconn*>(database_.pg_), | |
| 275 id_.c_str(), | |
| 276 oids_.size(), | |
| 277 &inputs_->GetValues()[0], | |
| 278 &inputs_->GetSizes()[0], | |
| 279 &binary_[0], | |
| 280 1); | |
| 281 } | |
| 282 | |
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283 if (PQtransactionStatus(reinterpret_cast<PGconn*>(database_.pg_)) == PQTRANS_INERROR) |
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284 { |
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285 if (result != NULL) |
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286 { |
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287 PQclear(result); |
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288 } |
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289 |
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290 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 9, 2) |
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291 std::string errorString(PQresultErrorMessage(result)); |
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292 throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseCannotSerialize, errorString, false); // don't log here, it is handled at higher level |
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293 #else |
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294 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Collision between multiple writers"); |
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295 #endif |
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296 } |
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297 else if (result == NULL) |
| 0 | 298 { |
| 299 database_.ThrowException(true); | |
| 300 } | |
| 301 | |
| 302 return result; | |
| 303 } | |
| 304 | |
| 305 | |
| 306 PostgreSQLStatement::PostgreSQLStatement(PostgreSQLDatabase& database, | |
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307 const std::string& sql) : |
| 0 | 308 database_(database), |
| 309 sql_(sql), | |
| 310 inputs_(new Inputs), | |
| 311 formatter_(Dialect_PostgreSQL) | |
| 312 { | |
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313 if (database.IsVerboseEnabled()) |
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314 { |
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315 LOG(TRACE) << "PostgreSQL: " << sql; |
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316 } |
| 0 | 317 } |
| 318 | |
| 319 | |
| 320 PostgreSQLStatement::PostgreSQLStatement(PostgreSQLDatabase& database, | |
| 321 const Query& query) : | |
| 322 database_(database), | |
| 323 inputs_(new Inputs), | |
| 324 formatter_(Dialect_PostgreSQL) | |
| 325 { | |
| 326 query.Format(sql_, formatter_); | |
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327 |
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328 if (database.IsVerboseEnabled()) |
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329 { |
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330 LOG(TRACE) << "PostgreSQL: " << sql_; |
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331 } |
| 0 | 332 |
| 333 for (size_t i = 0; i < formatter_.GetParametersCount(); i++) | |
| 334 { | |
| 335 switch (formatter_.GetParameterType(i)) | |
| 336 { | |
| 337 case ValueType_Integer64: | |
| 338 DeclareInputInteger64(i); | |
| 339 break; | |
| 340 | |
| 341 case ValueType_Utf8String: | |
| 342 DeclareInputString(i); | |
| 343 break; | |
| 344 | |
| 345 case ValueType_BinaryString: | |
| 346 DeclareInputBinary(i); | |
| 347 break; | |
| 348 | |
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349 case ValueType_InputFile: |
| 0 | 350 DeclareInputLargeObject(i); |
| 351 break; | |
| 352 | |
| 353 case ValueType_Null: | |
| 354 default: | |
| 355 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 356 } | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 | |
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361 PostgreSQLStatement::~PostgreSQLStatement() |
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362 { |
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363 try |
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364 { |
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365 Unprepare(); |
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366 } |
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367 catch (Orthanc::OrthancException&) |
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368 { |
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369 // Ignore possible exceptions due to connection loss |
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370 } |
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371 } |
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372 |
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373 |
| 0 | 374 void PostgreSQLStatement::Run() |
| 375 { | |
| 376 PGresult* result = reinterpret_cast<PGresult*>(Execute()); | |
| 377 assert(result != NULL); // An exception would have been thrown otherwise | |
| 378 | |
| 379 bool ok = (PQresultStatus(result) == PGRES_COMMAND_OK || | |
| 380 PQresultStatus(result) == PGRES_TUPLES_OK); | |
| 381 if (ok) | |
| 382 { | |
| 383 PQclear(result); | |
| 384 } | |
| 385 else | |
| 386 { | |
| 387 std::string error = PQresultErrorMessage(result); | |
| 388 PQclear(result); | |
| 389 LOG(ERROR) << "PostgreSQL error: " << error; | |
| 390 database_.ThrowException(false); | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 | |
| 395 void PostgreSQLStatement::BindNull(unsigned int param) | |
| 396 { | |
| 397 if (param >= oids_.size()) | |
| 398 { | |
| 399 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 400 } | |
| 401 | |
| 402 inputs_->SetItem(param, 0); | |
| 403 } | |
| 404 | |
| 405 | |
| 406 void PostgreSQLStatement::BindInteger(unsigned int param, | |
| 407 int value) | |
| 408 { | |
| 409 if (param >= oids_.size()) | |
| 410 { | |
| 411 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 412 } | |
| 413 | |
| 414 if (oids_[param] != INT4OID) | |
| 415 { | |
| 416 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 417 } | |
| 418 | |
| 419 assert(sizeof(int32_t) == 4); | |
| 420 int32_t v = htobe32(static_cast<int32_t>(value)); | |
| 421 inputs_->SetItem(param, &v, sizeof(int32_t)); | |
| 422 } | |
| 423 | |
| 424 | |
| 425 void PostgreSQLStatement::BindInteger64(unsigned int param, | |
| 426 int64_t value) | |
| 427 { | |
| 428 if (param >= oids_.size()) | |
| 429 { | |
| 430 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 431 } | |
| 432 | |
| 433 if (oids_[param] != INT8OID) | |
| 434 { | |
| 435 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 436 } | |
| 437 | |
| 438 assert(sizeof(int64_t) == 8); | |
| 439 int64_t v = htobe64(value); | |
| 440 inputs_->SetItem(param, &v, sizeof(int64_t)); | |
| 441 } | |
| 442 | |
| 443 | |
| 444 void PostgreSQLStatement::BindString(unsigned int param, | |
| 445 const std::string& value) | |
| 446 { | |
| 447 if (param >= oids_.size()) | |
| 448 { | |
| 449 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 450 } | |
| 451 | |
| 452 if (oids_[param] != TEXTOID && oids_[param] != BYTEAOID) | |
| 453 { | |
| 454 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 455 } | |
| 456 | |
| 457 if (value.size() == 0) | |
| 458 { | |
| 459 inputs_->SetItem(param, "", 1 /* end-of-string character */); | |
| 460 } | |
| 461 else | |
| 462 { | |
| 463 inputs_->SetItem(param, value.c_str(), | |
| 464 value.size() + 1); // "+1" for end-of-string character | |
| 465 } | |
| 466 } | |
| 467 | |
| 468 | |
| 469 void PostgreSQLStatement::BindLargeObject(unsigned int param, | |
| 470 const PostgreSQLLargeObject& value) | |
| 471 { | |
| 472 if (param >= oids_.size()) | |
| 473 { | |
| 474 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 475 } | |
| 476 | |
| 477 if (oids_[param] != OIDOID) | |
| 478 { | |
| 479 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 480 } | |
| 481 | |
| 482 inputs_->SetItem(param, value.GetOid().c_str(), | |
| 483 value.GetOid().size() + 1); // "+1" for end-of-string character | |
| 484 } | |
| 485 | |
| 486 | |
| 487 class PostgreSQLStatement::ResultWrapper : public ResultBase | |
| 488 { | |
| 489 private: | |
|
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490 std::unique_ptr<PostgreSQLResult> result_; |
| 0 | 491 |
| 492 protected: | |
| 493 virtual IValue* FetchField(size_t index) | |
| 494 { | |
| 495 return result_->GetValue(index); | |
| 496 } | |
| 497 | |
| 498 public: | |
| 186 | 499 explicit ResultWrapper(PostgreSQLStatement& statement) : |
| 0 | 500 result_(new PostgreSQLResult(statement)) |
| 501 { | |
| 502 SetFieldsCount(result_->GetColumnsCount()); | |
| 503 FetchFields(); | |
| 504 } | |
| 505 | |
| 506 virtual void Next() | |
| 507 { | |
| 508 result_->Next(); | |
| 509 FetchFields(); | |
| 510 } | |
| 511 | |
| 512 virtual bool IsDone() const | |
| 513 { | |
| 514 return result_->IsDone(); | |
| 515 } | |
| 516 }; | |
| 517 | |
| 518 | |
|
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519 IResult* PostgreSQLStatement::Execute(ITransaction& transaction, |
| 0 | 520 const Dictionary& parameters) |
| 521 { | |
| 522 for (size_t i = 0; i < formatter_.GetParametersCount(); i++) | |
| 523 { | |
| 524 const std::string& name = formatter_.GetParameterName(i); | |
| 525 | |
| 526 switch (formatter_.GetParameterType(i)) | |
| 527 { | |
| 528 case ValueType_Integer64: | |
| 529 BindInteger64(i, dynamic_cast<const Integer64Value&>(parameters.GetValue(name)).GetValue()); | |
| 530 break; | |
| 531 | |
| 532 case ValueType_Null: | |
| 533 BindNull(i); | |
| 534 break; | |
| 535 | |
| 536 case ValueType_Utf8String: | |
| 537 BindString(i, dynamic_cast<const Utf8StringValue&> | |
| 538 (parameters.GetValue(name)).GetContent()); | |
| 539 break; | |
| 540 | |
| 541 case ValueType_BinaryString: | |
| 542 BindString(i, dynamic_cast<const BinaryStringValue&> | |
| 543 (parameters.GetValue(name)).GetContent()); | |
| 544 break; | |
| 545 | |
|
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546 case ValueType_InputFile: |
| 0 | 547 { |
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548 const InputFileValue& blob = |
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549 dynamic_cast<const InputFileValue&>(parameters.GetValue(name)); |
| 0 | 550 |
| 551 PostgreSQLLargeObject largeObject(database_, blob.GetContent()); | |
| 552 BindLargeObject(i, largeObject); | |
| 553 break; | |
| 554 } | |
| 555 | |
| 556 default: | |
| 557 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 558 } | |
| 559 } | |
| 560 | |
| 561 return new ResultWrapper(*this); | |
| 562 } | |
| 563 | |
| 564 | |
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565 void PostgreSQLStatement::ExecuteWithoutResult(ITransaction& transaction, |
| 0 | 566 const Dictionary& parameters) |
| 567 { | |
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568 std::unique_ptr<IResult> dummy(Execute(transaction, parameters)); |
| 0 | 569 } |
| 570 } |