Mercurial > hg > orthanc-webviewer
annotate Plugin/Cache/CacheManager.cpp @ 293:e376158e2dbb
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 06 Jan 2021 18:02:43 +0100 |
| parents | 4e9d30c19b4b |
| children | dca8013585d1 |
| rev | line source |
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| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 122 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 0 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "CacheManager.h" | |
| 23 | |
|
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24 #include <Compatibility.h> |
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25 #include <Toolbox.h> |
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26 #include <SQLite/Transaction.h> |
| 0 | 27 |
| 28 #include <boost/lexical_cast.hpp> | |
| 29 | |
| 30 | |
| 31 namespace OrthancPlugins | |
| 32 { | |
| 33 class CacheManager::Bundle | |
| 34 { | |
| 35 private: | |
| 36 uint32_t count_; | |
| 37 uint64_t space_; | |
| 38 | |
| 39 public: | |
| 40 Bundle() : count_(0), space_(0) | |
| 41 { | |
| 42 } | |
| 43 | |
| 44 Bundle(uint32_t count, | |
| 45 uint64_t space) : | |
| 46 count_(count), space_(space) | |
| 47 { | |
| 48 } | |
| 49 | |
| 50 uint32_t GetCount() const | |
| 51 { | |
| 52 return count_; | |
| 53 } | |
| 54 | |
| 55 uint64_t GetSpace() const | |
| 56 { | |
| 57 return space_; | |
| 58 } | |
| 59 | |
| 60 void Remove(uint64_t fileSize) | |
| 61 { | |
| 62 if (count_ == 0 || | |
| 63 space_ < fileSize) | |
| 64 { | |
| 65 throw std::runtime_error("Internal error"); | |
| 66 } | |
| 67 | |
| 68 count_ -= 1; | |
| 69 space_ -= fileSize; | |
| 70 } | |
| 71 | |
| 72 void Add(uint64_t fileSize) | |
| 73 { | |
| 74 count_ += 1; | |
| 75 space_ += fileSize; | |
| 76 } | |
| 77 }; | |
| 78 | |
| 79 | |
| 80 class CacheManager::BundleQuota | |
| 81 { | |
| 82 private: | |
| 83 uint32_t maxCount_; | |
| 84 uint64_t maxSpace_; | |
| 85 | |
| 86 public: | |
| 87 BundleQuota(uint32_t maxCount, | |
| 88 uint64_t maxSpace) : | |
| 89 maxCount_(maxCount), maxSpace_(maxSpace) | |
| 90 { | |
| 91 } | |
| 92 | |
| 93 BundleQuota() | |
| 94 { | |
| 95 // Default quota | |
| 96 maxCount_ = 0; // No limit on the number of files | |
| 97 maxSpace_ = 100 * 1024 * 1024; // Max 100MB per bundle | |
| 98 } | |
| 99 | |
| 100 uint32_t GetMaxCount() const | |
| 101 { | |
| 102 return maxCount_; | |
| 103 } | |
| 104 | |
| 105 uint64_t GetMaxSpace() const | |
| 106 { | |
| 107 return maxSpace_; | |
| 108 } | |
| 109 | |
| 110 bool IsSatisfied(const Bundle& bundle) const | |
| 111 { | |
| 112 if (maxCount_ != 0 && | |
| 113 bundle.GetCount() > maxCount_) | |
| 114 { | |
| 115 return false; | |
| 116 } | |
| 117 | |
| 118 if (maxSpace_ != 0 && | |
| 119 bundle.GetSpace() > maxSpace_) | |
| 120 { | |
| 121 return false; | |
| 122 } | |
| 123 | |
| 124 return true; | |
| 125 } | |
| 126 }; | |
| 127 | |
| 128 | |
| 129 struct CacheManager::PImpl | |
| 130 { | |
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131 OrthancPluginContext* context_; |
| 0 | 132 Orthanc::SQLite::Connection& db_; |
| 133 Orthanc::FilesystemStorage& storage_; | |
| 134 | |
| 135 bool sanityCheck_; | |
| 136 Bundles bundles_; | |
| 137 BundleQuota defaultQuota_; | |
| 138 BundleQuotas quotas_; | |
| 139 | |
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140 PImpl(OrthancPluginContext* context, |
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141 Orthanc::SQLite::Connection& db, |
| 0 | 142 Orthanc::FilesystemStorage& storage) : |
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143 context_(context), |
| 0 | 144 db_(db), |
| 145 storage_(storage), | |
| 146 sanityCheck_(false) | |
| 147 { | |
| 148 } | |
| 149 }; | |
| 150 | |
| 151 | |
| 152 const CacheManager::BundleQuota& CacheManager::GetBundleQuota(int bundleIndex) const | |
| 153 { | |
| 154 BundleQuotas::const_iterator found = pimpl_->quotas_.find(bundleIndex); | |
| 155 | |
| 156 if (found == pimpl_->quotas_.end()) | |
| 157 { | |
| 158 return pimpl_->defaultQuota_; | |
| 159 } | |
| 160 else | |
| 161 { | |
| 162 return found->second; | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 | |
| 167 CacheManager::Bundle CacheManager::GetBundle(int bundleIndex) const | |
| 168 { | |
| 169 Bundles::const_iterator it = pimpl_->bundles_.find(bundleIndex); | |
| 170 | |
| 171 if (it == pimpl_->bundles_.end()) | |
| 172 { | |
| 173 return Bundle(); | |
| 174 } | |
| 175 else | |
| 176 { | |
| 177 return it->second; | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 | |
| 182 void CacheManager::MakeRoom(Bundle& bundle, | |
| 183 std::list<std::string>& toRemove, | |
| 184 int bundleIndex, | |
| 185 const BundleQuota& quota) | |
| 186 { | |
| 187 using namespace Orthanc; | |
| 188 | |
| 189 toRemove.clear(); | |
| 190 | |
| 191 // Make room in the bundle | |
| 192 while (!quota.IsSatisfied(bundle)) | |
| 193 { | |
| 194 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? ORDER BY seq"); | |
| 195 s.BindInt(0, bundleIndex); | |
| 196 | |
| 197 if (s.Step()) | |
| 198 { | |
| 199 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 200 t.BindInt64(0, s.ColumnInt64(0)); | |
| 201 t.Run(); | |
| 202 | |
| 203 toRemove.push_back(s.ColumnString(1)); | |
| 204 bundle.Remove(s.ColumnInt64(2)); | |
| 205 } | |
| 206 else | |
| 207 { | |
| 208 // Should never happen | |
| 209 throw std::runtime_error("Internal error"); | |
| 210 } | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 | |
| 215 | |
| 216 void CacheManager::EnsureQuota(int bundleIndex, | |
| 217 const BundleQuota& quota) | |
| 218 { | |
| 219 using namespace Orthanc; | |
| 220 | |
| 221 // Remove the cached files that exceed the quota | |
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222 std::unique_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); |
| 0 | 223 transaction->Begin(); |
| 224 | |
| 225 Bundle bundle = GetBundle(bundleIndex); | |
| 226 | |
| 227 std::list<std::string> toRemove; | |
| 228 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 229 | |
| 230 transaction->Commit(); | |
| 231 for (std::list<std::string>::const_iterator | |
| 197 | 232 it = toRemove.begin(); it != toRemove.end(); ++it) |
| 0 | 233 { |
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234 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); |
| 0 | 235 } |
| 236 | |
| 237 pimpl_->bundles_[bundleIndex] = bundle; | |
| 238 } | |
| 239 | |
| 240 | |
| 241 | |
| 242 void CacheManager::ReadBundleStatistics() | |
| 243 { | |
| 244 using namespace Orthanc; | |
| 245 | |
| 246 pimpl_->bundles_.clear(); | |
| 247 | |
| 248 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); | |
| 249 while (s.Step()) | |
| 250 { | |
| 251 int index = s.ColumnInt(0); | |
| 252 Bundle bundle(static_cast<uint32_t>(s.ColumnInt(1)), | |
| 253 static_cast<uint64_t>(s.ColumnInt64(2))); | |
| 254 pimpl_->bundles_[index] = bundle; | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 | |
| 259 | |
| 260 void CacheManager::SanityCheck() | |
| 261 { | |
| 262 if (!pimpl_->sanityCheck_) | |
| 263 { | |
| 264 return; | |
| 265 } | |
| 266 | |
| 267 using namespace Orthanc; | |
| 268 | |
| 269 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); | |
| 270 while (s.Step()) | |
| 271 { | |
| 272 const Bundle& bundle = GetBundle(s.ColumnInt(0)); | |
| 273 if (bundle.GetCount() != static_cast<uint32_t>(s.ColumnInt(1)) || | |
| 274 bundle.GetSpace() != static_cast<uint64_t>(s.ColumnInt64(2))) | |
| 275 { | |
| 276 throw std::runtime_error("SANITY ERROR in cache: " + boost::lexical_cast<std::string>(bundle.GetCount()) | |
| 277 + "/" + boost::lexical_cast<std::string>(bundle.GetSpace()) | |
| 278 + " vs " + boost::lexical_cast<std::string>(s.ColumnInt(1)) + "/" | |
| 279 + boost::lexical_cast<std::string>(s.ColumnInt64(2))); | |
| 280 } | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 | |
| 285 | |
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286 CacheManager::CacheManager(OrthancPluginContext* context, |
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287 Orthanc::SQLite::Connection& db, |
| 0 | 288 Orthanc::FilesystemStorage& storage) : |
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289 pimpl_(new PImpl(context, db, storage)) |
| 0 | 290 { |
| 291 Open(); | |
| 292 ReadBundleStatistics(); | |
| 293 } | |
| 294 | |
| 295 | |
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296 OrthancPluginContext* CacheManager::GetPluginContext() const |
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297 { |
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298 return pimpl_->context_; |
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299 } |
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300 |
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301 |
| 0 | 302 void CacheManager::SetSanityCheckEnabled(bool enabled) |
| 303 { | |
| 304 pimpl_->sanityCheck_ = enabled; | |
| 305 } | |
| 306 | |
| 307 | |
| 308 void CacheManager::Open() | |
| 309 { | |
| 310 if (!pimpl_->db_.DoesTableExist("Cache")) | |
| 311 { | |
| 312 pimpl_->db_.Execute("CREATE TABLE Cache(seq INTEGER PRIMARY KEY, bundle INTEGER, item TEXT, fileUuid TEXT, fileSize INT);"); | |
| 313 pimpl_->db_.Execute("CREATE INDEX CacheBundles ON Cache(bundle);"); | |
| 314 pimpl_->db_.Execute("CREATE INDEX CacheIndex ON Cache(bundle, item);"); | |
| 315 } | |
| 316 | |
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317 if (!pimpl_->db_.DoesTableExist("CacheProperties")) |
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318 { |
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319 pimpl_->db_.Execute("CREATE TABLE CacheProperties(property INTEGER PRIMARY KEY, value TEXT);"); |
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320 } |
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321 |
| 0 | 322 // Performance tuning of SQLite with PRAGMAs |
| 323 // http://www.sqlite.org/pragma.html | |
| 324 pimpl_->db_.Execute("PRAGMA SYNCHRONOUS=OFF;"); | |
| 325 pimpl_->db_.Execute("PRAGMA JOURNAL_MODE=WAL;"); | |
| 326 pimpl_->db_.Execute("PRAGMA LOCKING_MODE=EXCLUSIVE;"); | |
| 327 } | |
| 328 | |
| 329 | |
| 330 void CacheManager::Store(int bundleIndex, | |
| 331 const std::string& item, | |
| 332 const std::string& content) | |
| 333 { | |
| 334 SanityCheck(); | |
| 335 | |
| 336 const BundleQuota quota = GetBundleQuota(bundleIndex); | |
| 337 | |
| 338 if (quota.GetMaxSpace() > 0 && | |
| 339 content.size() > quota.GetMaxSpace()) | |
| 340 { | |
| 341 // Cannot store such a large instance into the cache, forget about it | |
| 342 return; | |
| 343 } | |
| 344 | |
| 345 using namespace Orthanc; | |
| 346 | |
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347 std::unique_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); |
| 0 | 348 transaction->Begin(); |
| 349 | |
| 350 Bundle bundle = GetBundle(bundleIndex); | |
| 351 | |
| 352 std::list<std::string> toRemove; | |
| 353 bundle.Add(content.size()); | |
| 354 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 355 | |
| 356 // Store the cached content on the disk | |
| 357 const char* data = content.size() ? &content[0] : NULL; | |
| 188 | 358 std::string uuid = Toolbox::GenerateUuid(); |
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359 pimpl_->storage_.Create(uuid, data, content.size(), Orthanc::FileContentType_Unknown); |
| 0 | 360 |
| 361 // Remove the previous cached value. This might happen if the same | |
| 362 // item is accessed very quickly twice: Another factory could have | |
| 363 // been cached a value before the check for existence in Access(). | |
| 364 { | |
| 365 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); | |
| 366 s.BindInt(0, bundleIndex); | |
| 367 s.BindString(1, item); | |
| 368 if (s.Step()) | |
| 369 { | |
| 370 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 371 t.BindInt64(0, s.ColumnInt64(0)); | |
| 372 t.Run(); | |
| 373 | |
| 374 toRemove.push_back(s.ColumnString(1)); | |
| 375 bundle.Remove(s.ColumnInt64(2)); | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 { | |
| 380 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); | |
| 381 s.BindInt(0, bundleIndex); | |
| 382 s.BindString(1, item); | |
| 383 s.BindString(2, uuid); | |
| 384 s.BindInt64(3, content.size()); | |
| 385 | |
| 386 if (!s.Run()) | |
| 387 { | |
| 197 | 388 // Error: Remove the stored file |
| 389 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); | |
| 0 | 390 } |
| 197 | 391 else |
| 392 { | |
| 393 transaction->Commit(); | |
| 0 | 394 |
| 197 | 395 pimpl_->bundles_[bundleIndex] = bundle; |
| 0 | 396 |
| 197 | 397 for (std::list<std::string>::const_iterator |
| 398 it = toRemove.begin(); it != toRemove.end(); ++it) | |
| 399 { | |
| 400 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); | |
| 401 } | |
| 0 | 402 } |
| 403 } | |
| 404 | |
| 405 SanityCheck(); | |
| 406 } | |
| 407 | |
| 408 | |
| 409 | |
| 410 bool CacheManager::LocateInCache(std::string& uuid, | |
| 411 uint64_t& size, | |
| 412 int bundle, | |
| 413 const std::string& item) | |
| 414 { | |
| 415 using namespace Orthanc; | |
| 416 SanityCheck(); | |
| 417 | |
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418 std::unique_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); |
| 0 | 419 transaction->Begin(); |
| 420 | |
| 421 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); | |
| 422 s.BindInt(0, bundle); | |
| 423 s.BindString(1, item); | |
| 424 if (!s.Step()) | |
| 425 { | |
| 426 return false; | |
| 427 } | |
| 428 | |
| 429 int64_t seq = s.ColumnInt64(0); | |
| 430 uuid = s.ColumnString(1); | |
| 431 size = s.ColumnInt64(2); | |
| 432 | |
| 433 // Touch the cache to fulfill the LRU scheme. | |
| 434 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 435 t.BindInt64(0, seq); | |
| 436 if (t.Run()) | |
| 437 { | |
| 438 SQLite::Statement u(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); | |
| 439 u.BindInt(0, bundle); | |
| 440 u.BindString(1, item); | |
| 441 u.BindString(2, uuid); | |
| 442 u.BindInt64(3, size); | |
| 443 if (u.Run()) | |
| 444 { | |
| 445 // Everything was OK. Commit the changes to the cache. | |
| 446 transaction->Commit(); | |
| 447 return true; | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 return false; | |
| 452 } | |
| 453 | |
| 454 | |
| 455 bool CacheManager::IsCached(int bundle, | |
| 456 const std::string& item) | |
| 457 { | |
| 458 std::string uuid; | |
| 459 uint64_t size; | |
| 460 return LocateInCache(uuid, size, bundle, item); | |
| 461 } | |
| 462 | |
| 463 | |
| 464 bool CacheManager::Access(std::string& content, | |
| 465 int bundle, | |
| 466 const std::string& item) | |
| 467 { | |
| 468 std::string uuid; | |
| 469 uint64_t size; | |
| 470 if (!LocateInCache(uuid, size, bundle, item)) | |
| 471 { | |
| 472 return false; | |
| 473 } | |
| 474 | |
| 475 bool ok; | |
| 476 try | |
| 477 { | |
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478 pimpl_->storage_.Read(content, uuid, Orthanc::FileContentType_Unknown); |
| 0 | 479 ok = (content.size() == size); |
| 480 } | |
| 481 catch (std::runtime_error&) | |
| 482 { | |
| 483 ok = false; | |
| 484 } | |
| 485 | |
| 486 if (ok) | |
| 487 { | |
| 488 return true; | |
| 489 } | |
| 490 else | |
| 491 { | |
| 492 throw std::runtime_error("Error in the filesystem"); | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 | |
| 497 void CacheManager::Invalidate(int bundleIndex, | |
| 498 const std::string& item) | |
| 499 { | |
| 500 using namespace Orthanc; | |
| 501 SanityCheck(); | |
| 502 | |
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503 std::unique_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); |
| 0 | 504 transaction->Begin(); |
| 505 | |
| 506 Bundle bundle = GetBundle(bundleIndex); | |
| 507 | |
| 508 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); | |
| 509 s.BindInt(0, bundleIndex); | |
| 510 s.BindString(1, item); | |
| 511 if (s.Step()) | |
| 512 { | |
| 513 int64_t seq = s.ColumnInt64(0); | |
| 514 const std::string uuid = s.ColumnString(1); | |
| 515 uint64_t expectedSize = s.ColumnInt64(2); | |
| 516 bundle.Remove(expectedSize); | |
| 517 | |
| 518 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 519 t.BindInt64(0, seq); | |
| 520 if (t.Run()) | |
| 521 { | |
| 522 transaction->Commit(); | |
| 523 pimpl_->bundles_[bundleIndex] = bundle; | |
|
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524 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); |
| 0 | 525 } |
| 526 } | |
| 527 } | |
| 528 | |
| 529 | |
| 530 | |
| 531 void CacheManager::SetBundleQuota(int bundle, | |
| 532 uint32_t maxCount, | |
| 533 uint64_t maxSpace) | |
| 534 { | |
| 535 SanityCheck(); | |
| 536 | |
| 537 const BundleQuota quota(maxCount, maxSpace); | |
| 538 EnsureQuota(bundle, quota); | |
| 539 pimpl_->quotas_[bundle] = quota; | |
| 540 | |
| 541 SanityCheck(); | |
| 542 } | |
| 543 | |
| 544 void CacheManager::SetDefaultQuota(uint32_t maxCount, | |
| 545 uint64_t maxSpace) | |
| 546 { | |
| 547 using namespace Orthanc; | |
| 548 SanityCheck(); | |
| 549 | |
| 550 pimpl_->defaultQuota_ = BundleQuota(maxCount, maxSpace); | |
| 551 | |
| 552 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT DISTINCT bundle FROM Cache"); | |
| 553 while (s.Step()) | |
| 554 { | |
| 555 EnsureQuota(s.ColumnInt(0), pimpl_->defaultQuota_); | |
| 556 } | |
| 557 | |
| 558 SanityCheck(); | |
| 559 } | |
| 560 | |
| 561 | |
| 562 void CacheManager::Clear() | |
| 563 { | |
| 564 using namespace Orthanc; | |
| 565 SanityCheck(); | |
| 566 | |
| 567 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache"); | |
| 568 while (s.Step()) | |
| 569 { | |
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570 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 571 } |
| 572 | |
| 573 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache"); | |
| 574 t.Run(); | |
| 575 | |
| 576 ReadBundleStatistics(); | |
| 577 SanityCheck(); | |
| 578 } | |
| 579 | |
| 580 | |
| 581 | |
| 582 void CacheManager::Clear(int bundle) | |
| 583 { | |
| 584 using namespace Orthanc; | |
| 585 SanityCheck(); | |
| 586 | |
| 587 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache WHERE bundle=?"); | |
| 588 s.BindInt(0, bundle); | |
| 589 while (s.Step()) | |
| 590 { | |
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591 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 592 } |
| 593 | |
| 594 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE bundle=?"); | |
| 595 t.BindInt(0, bundle); | |
| 596 t.Run(); | |
| 597 | |
| 598 ReadBundleStatistics(); | |
| 599 SanityCheck(); | |
| 600 } | |
|
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601 |
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602 |
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603 void CacheManager::SetProperty(CacheProperty property, |
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604 const std::string& value) |
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605 { |
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606 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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607 "INSERT OR REPLACE INTO CacheProperties VALUES(?, ?)"); |
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608 s.BindInt(0, property); |
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609 s.BindString(1, value); |
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610 s.Run(); |
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611 } |
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612 |
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613 |
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614 bool CacheManager::LookupProperty(std::string& target, |
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615 CacheProperty property) |
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616 { |
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617 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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618 "SELECT value FROM CacheProperties WHERE property=?"); |
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619 s.BindInt(0, property); |
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620 |
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621 if (!s.Step()) |
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622 { |
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623 return false; |
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624 } |
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625 else |
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626 { |
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627 target = s.ColumnString(0); |
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628 return true; |
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629 } |
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630 } |
| 0 | 631 } |