Mercurial > hg > orthanc-webviewer
annotate Plugin/Cache/CacheManager.cpp @ 321:705be6d59d9b default tip
fix build on tumbleweed
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 11 Jun 2024 12:57:30 +0200 |
| parents | 553fa466835a |
| children |
| 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) 2017-2023 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 | |
| 24 #include "CacheManager.h" | |
| 25 | |
|
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26 #include <Compatibility.h> |
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27 #include <Toolbox.h> |
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28 #include <SQLite/Transaction.h> |
| 0 | 29 |
| 30 #include <boost/lexical_cast.hpp> | |
| 31 | |
| 32 | |
| 33 namespace OrthancPlugins | |
| 34 { | |
| 35 class CacheManager::Bundle | |
| 36 { | |
| 37 private: | |
| 38 uint32_t count_; | |
| 39 uint64_t space_; | |
| 40 | |
| 41 public: | |
| 42 Bundle() : count_(0), space_(0) | |
| 43 { | |
| 44 } | |
| 45 | |
| 46 Bundle(uint32_t count, | |
| 47 uint64_t space) : | |
| 48 count_(count), space_(space) | |
| 49 { | |
| 50 } | |
| 51 | |
| 52 uint32_t GetCount() const | |
| 53 { | |
| 54 return count_; | |
| 55 } | |
| 56 | |
| 57 uint64_t GetSpace() const | |
| 58 { | |
| 59 return space_; | |
| 60 } | |
| 61 | |
| 62 void Remove(uint64_t fileSize) | |
| 63 { | |
| 64 if (count_ == 0 || | |
| 65 space_ < fileSize) | |
| 66 { | |
| 67 throw std::runtime_error("Internal error"); | |
| 68 } | |
| 69 | |
| 70 count_ -= 1; | |
| 71 space_ -= fileSize; | |
| 72 } | |
| 73 | |
| 74 void Add(uint64_t fileSize) | |
| 75 { | |
| 76 count_ += 1; | |
| 77 space_ += fileSize; | |
| 78 } | |
| 79 }; | |
| 80 | |
| 81 | |
| 82 class CacheManager::BundleQuota | |
| 83 { | |
| 84 private: | |
| 85 uint32_t maxCount_; | |
| 86 uint64_t maxSpace_; | |
| 87 | |
| 88 public: | |
| 89 BundleQuota(uint32_t maxCount, | |
| 90 uint64_t maxSpace) : | |
| 91 maxCount_(maxCount), maxSpace_(maxSpace) | |
| 92 { | |
| 93 } | |
| 94 | |
| 95 BundleQuota() | |
| 96 { | |
| 97 // Default quota | |
| 98 maxCount_ = 0; // No limit on the number of files | |
| 99 maxSpace_ = 100 * 1024 * 1024; // Max 100MB per bundle | |
| 100 } | |
| 101 | |
| 102 uint32_t GetMaxCount() const | |
| 103 { | |
| 104 return maxCount_; | |
| 105 } | |
| 106 | |
| 107 uint64_t GetMaxSpace() const | |
| 108 { | |
| 109 return maxSpace_; | |
| 110 } | |
| 111 | |
| 112 bool IsSatisfied(const Bundle& bundle) const | |
| 113 { | |
| 114 if (maxCount_ != 0 && | |
| 115 bundle.GetCount() > maxCount_) | |
| 116 { | |
| 117 return false; | |
| 118 } | |
| 119 | |
| 120 if (maxSpace_ != 0 && | |
| 121 bundle.GetSpace() > maxSpace_) | |
| 122 { | |
| 123 return false; | |
| 124 } | |
| 125 | |
| 126 return true; | |
| 127 } | |
| 128 }; | |
| 129 | |
| 130 | |
| 131 struct CacheManager::PImpl | |
| 132 { | |
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133 OrthancPluginContext* context_; |
| 0 | 134 Orthanc::SQLite::Connection& db_; |
| 135 Orthanc::FilesystemStorage& storage_; | |
| 136 | |
| 137 bool sanityCheck_; | |
| 138 Bundles bundles_; | |
| 139 BundleQuota defaultQuota_; | |
| 140 BundleQuotas quotas_; | |
| 141 | |
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142 PImpl(OrthancPluginContext* context, |
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143 Orthanc::SQLite::Connection& db, |
| 0 | 144 Orthanc::FilesystemStorage& storage) : |
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145 context_(context), |
| 0 | 146 db_(db), |
| 147 storage_(storage), | |
| 148 sanityCheck_(false) | |
| 149 { | |
| 150 } | |
| 151 }; | |
| 152 | |
| 153 | |
| 154 const CacheManager::BundleQuota& CacheManager::GetBundleQuota(int bundleIndex) const | |
| 155 { | |
| 156 BundleQuotas::const_iterator found = pimpl_->quotas_.find(bundleIndex); | |
| 157 | |
| 158 if (found == pimpl_->quotas_.end()) | |
| 159 { | |
| 160 return pimpl_->defaultQuota_; | |
| 161 } | |
| 162 else | |
| 163 { | |
| 164 return found->second; | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 | |
| 169 CacheManager::Bundle CacheManager::GetBundle(int bundleIndex) const | |
| 170 { | |
| 171 Bundles::const_iterator it = pimpl_->bundles_.find(bundleIndex); | |
| 172 | |
| 173 if (it == pimpl_->bundles_.end()) | |
| 174 { | |
| 175 return Bundle(); | |
| 176 } | |
| 177 else | |
| 178 { | |
| 179 return it->second; | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 | |
| 184 void CacheManager::MakeRoom(Bundle& bundle, | |
| 185 std::list<std::string>& toRemove, | |
| 186 int bundleIndex, | |
| 187 const BundleQuota& quota) | |
| 188 { | |
| 189 toRemove.clear(); | |
| 190 | |
| 191 // Make room in the bundle | |
| 192 while (!quota.IsSatisfied(bundle)) | |
| 193 { | |
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194 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? ORDER BY seq"); |
| 0 | 195 s.BindInt(0, bundleIndex); |
| 196 | |
| 197 if (s.Step()) | |
| 198 { | |
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199 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 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 // Remove the cached files that exceed the quota | |
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220 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 221 transaction->Begin(); |
| 222 | |
| 223 Bundle bundle = GetBundle(bundleIndex); | |
| 224 | |
| 225 std::list<std::string> toRemove; | |
| 226 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 227 | |
| 228 transaction->Commit(); | |
| 229 for (std::list<std::string>::const_iterator | |
| 197 | 230 it = toRemove.begin(); it != toRemove.end(); ++it) |
| 0 | 231 { |
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232 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); |
| 0 | 233 } |
| 234 | |
| 235 pimpl_->bundles_[bundleIndex] = bundle; | |
| 236 } | |
| 237 | |
| 238 | |
| 239 | |
| 240 void CacheManager::ReadBundleStatistics() | |
| 241 { | |
| 242 pimpl_->bundles_.clear(); | |
| 243 | |
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244 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); |
| 0 | 245 while (s.Step()) |
| 246 { | |
| 247 int index = s.ColumnInt(0); | |
| 248 Bundle bundle(static_cast<uint32_t>(s.ColumnInt(1)), | |
| 249 static_cast<uint64_t>(s.ColumnInt64(2))); | |
| 250 pimpl_->bundles_[index] = bundle; | |
| 251 } | |
| 252 } | |
| 253 | |
| 254 | |
| 255 | |
| 256 void CacheManager::SanityCheck() | |
| 257 { | |
| 258 if (!pimpl_->sanityCheck_) | |
| 259 { | |
| 260 return; | |
| 261 } | |
| 262 | |
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263 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); |
| 0 | 264 while (s.Step()) |
| 265 { | |
| 266 const Bundle& bundle = GetBundle(s.ColumnInt(0)); | |
| 267 if (bundle.GetCount() != static_cast<uint32_t>(s.ColumnInt(1)) || | |
| 268 bundle.GetSpace() != static_cast<uint64_t>(s.ColumnInt64(2))) | |
| 269 { | |
| 270 throw std::runtime_error("SANITY ERROR in cache: " + boost::lexical_cast<std::string>(bundle.GetCount()) | |
| 271 + "/" + boost::lexical_cast<std::string>(bundle.GetSpace()) | |
| 272 + " vs " + boost::lexical_cast<std::string>(s.ColumnInt(1)) + "/" | |
| 273 + boost::lexical_cast<std::string>(s.ColumnInt64(2))); | |
| 274 } | |
| 275 } | |
| 276 } | |
| 277 | |
| 278 | |
| 279 | |
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280 CacheManager::CacheManager(OrthancPluginContext* context, |
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281 Orthanc::SQLite::Connection& db, |
| 0 | 282 Orthanc::FilesystemStorage& storage) : |
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283 pimpl_(new PImpl(context, db, storage)) |
| 0 | 284 { |
| 285 Open(); | |
| 286 ReadBundleStatistics(); | |
| 287 } | |
| 288 | |
| 289 | |
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290 OrthancPluginContext* CacheManager::GetPluginContext() const |
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291 { |
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292 return pimpl_->context_; |
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293 } |
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294 |
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295 |
| 0 | 296 void CacheManager::SetSanityCheckEnabled(bool enabled) |
| 297 { | |
| 298 pimpl_->sanityCheck_ = enabled; | |
| 299 } | |
| 300 | |
| 301 | |
| 302 void CacheManager::Open() | |
| 303 { | |
| 304 if (!pimpl_->db_.DoesTableExist("Cache")) | |
| 305 { | |
| 306 pimpl_->db_.Execute("CREATE TABLE Cache(seq INTEGER PRIMARY KEY, bundle INTEGER, item TEXT, fileUuid TEXT, fileSize INT);"); | |
| 307 pimpl_->db_.Execute("CREATE INDEX CacheBundles ON Cache(bundle);"); | |
| 308 pimpl_->db_.Execute("CREATE INDEX CacheIndex ON Cache(bundle, item);"); | |
| 309 } | |
| 310 | |
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311 if (!pimpl_->db_.DoesTableExist("CacheProperties")) |
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312 { |
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313 pimpl_->db_.Execute("CREATE TABLE CacheProperties(property INTEGER PRIMARY KEY, value TEXT);"); |
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314 } |
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315 |
| 0 | 316 // Performance tuning of SQLite with PRAGMAs |
| 317 // http://www.sqlite.org/pragma.html | |
| 318 pimpl_->db_.Execute("PRAGMA SYNCHRONOUS=OFF;"); | |
| 319 pimpl_->db_.Execute("PRAGMA JOURNAL_MODE=WAL;"); | |
| 320 pimpl_->db_.Execute("PRAGMA LOCKING_MODE=EXCLUSIVE;"); | |
| 321 } | |
| 322 | |
| 323 | |
| 324 void CacheManager::Store(int bundleIndex, | |
| 325 const std::string& item, | |
| 326 const std::string& content) | |
| 327 { | |
| 328 SanityCheck(); | |
| 329 | |
| 330 const BundleQuota quota = GetBundleQuota(bundleIndex); | |
| 331 | |
| 332 if (quota.GetMaxSpace() > 0 && | |
| 333 content.size() > quota.GetMaxSpace()) | |
| 334 { | |
| 335 // Cannot store such a large instance into the cache, forget about it | |
| 336 return; | |
| 337 } | |
| 338 | |
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339 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 340 transaction->Begin(); |
| 341 | |
| 342 Bundle bundle = GetBundle(bundleIndex); | |
| 343 | |
| 344 std::list<std::string> toRemove; | |
| 345 bundle.Add(content.size()); | |
| 346 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 347 | |
| 348 // Store the cached content on the disk | |
| 349 const char* data = content.size() ? &content[0] : NULL; | |
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350 std::string uuid = Orthanc::Toolbox::GenerateUuid(); |
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351 pimpl_->storage_.Create(uuid, data, content.size(), Orthanc::FileContentType_Unknown); |
| 0 | 352 |
| 353 // Remove the previous cached value. This might happen if the same | |
| 354 // item is accessed very quickly twice: Another factory could have | |
| 355 // been cached a value before the check for existence in Access(). | |
| 356 { | |
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357 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 358 s.BindInt(0, bundleIndex); |
| 359 s.BindString(1, item); | |
| 360 if (s.Step()) | |
| 361 { | |
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362 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 363 t.BindInt64(0, s.ColumnInt64(0)); |
| 364 t.Run(); | |
| 365 | |
| 366 toRemove.push_back(s.ColumnString(1)); | |
| 367 bundle.Remove(s.ColumnInt64(2)); | |
| 368 } | |
| 369 } | |
| 370 | |
| 371 { | |
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372 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); |
| 0 | 373 s.BindInt(0, bundleIndex); |
| 374 s.BindString(1, item); | |
| 375 s.BindString(2, uuid); | |
| 376 s.BindInt64(3, content.size()); | |
| 377 | |
| 378 if (!s.Run()) | |
| 379 { | |
| 197 | 380 // Error: Remove the stored file |
| 381 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); | |
| 0 | 382 } |
| 197 | 383 else |
| 384 { | |
| 385 transaction->Commit(); | |
| 0 | 386 |
| 197 | 387 pimpl_->bundles_[bundleIndex] = bundle; |
| 0 | 388 |
| 197 | 389 for (std::list<std::string>::const_iterator |
| 390 it = toRemove.begin(); it != toRemove.end(); ++it) | |
| 391 { | |
| 392 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); | |
| 393 } | |
| 0 | 394 } |
| 395 } | |
| 396 | |
| 397 SanityCheck(); | |
| 398 } | |
| 399 | |
| 400 | |
| 401 | |
| 402 bool CacheManager::LocateInCache(std::string& uuid, | |
| 403 uint64_t& size, | |
| 404 int bundle, | |
| 405 const std::string& item) | |
| 406 { | |
| 407 SanityCheck(); | |
| 408 | |
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409 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 410 transaction->Begin(); |
| 411 | |
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412 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 413 s.BindInt(0, bundle); |
| 414 s.BindString(1, item); | |
| 415 if (!s.Step()) | |
| 416 { | |
| 417 return false; | |
| 418 } | |
| 419 | |
| 420 int64_t seq = s.ColumnInt64(0); | |
| 421 uuid = s.ColumnString(1); | |
| 422 size = s.ColumnInt64(2); | |
| 423 | |
| 424 // Touch the cache to fulfill the LRU scheme. | |
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425 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 426 t.BindInt64(0, seq); |
| 427 if (t.Run()) | |
| 428 { | |
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429 Orthanc::SQLite::Statement u(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); |
| 0 | 430 u.BindInt(0, bundle); |
| 431 u.BindString(1, item); | |
| 432 u.BindString(2, uuid); | |
| 433 u.BindInt64(3, size); | |
| 434 if (u.Run()) | |
| 435 { | |
| 436 // Everything was OK. Commit the changes to the cache. | |
| 437 transaction->Commit(); | |
| 438 return true; | |
| 439 } | |
| 440 } | |
| 441 | |
| 442 return false; | |
| 443 } | |
| 444 | |
| 445 | |
| 446 bool CacheManager::IsCached(int bundle, | |
| 447 const std::string& item) | |
| 448 { | |
| 449 std::string uuid; | |
| 450 uint64_t size; | |
| 451 return LocateInCache(uuid, size, bundle, item); | |
| 452 } | |
| 453 | |
| 454 | |
| 455 bool CacheManager::Access(std::string& content, | |
| 456 int bundle, | |
| 457 const std::string& item) | |
| 458 { | |
| 459 std::string uuid; | |
| 460 uint64_t size; | |
| 461 if (!LocateInCache(uuid, size, bundle, item)) | |
| 462 { | |
| 463 return false; | |
| 464 } | |
| 465 | |
| 466 bool ok; | |
| 467 try | |
| 468 { | |
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469 #if defined(ORTHANC_FRAMEWORK_VERSION_IS_ABOVE) && ORTHANC_FRAMEWORK_VERSION_IS_ABOVE(1, 9, 0) |
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470 std::unique_ptr<Orthanc::IMemoryBuffer> buffer( |
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471 pimpl_->storage_.Read(uuid, Orthanc::FileContentType_Unknown)); |
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472 buffer->MoveToString(content); |
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473 #else |
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474 pimpl_->storage_.Read(content, uuid, Orthanc::FileContentType_Unknown); |
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475 #endif |
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476 |
| 0 | 477 ok = (content.size() == size); |
| 478 } | |
| 479 catch (std::runtime_error&) | |
| 480 { | |
| 481 ok = false; | |
| 482 } | |
| 483 | |
| 484 if (ok) | |
| 485 { | |
| 486 return true; | |
| 487 } | |
| 488 else | |
| 489 { | |
| 490 throw std::runtime_error("Error in the filesystem"); | |
| 491 } | |
| 492 } | |
| 493 | |
| 494 | |
| 495 void CacheManager::Invalidate(int bundleIndex, | |
| 496 const std::string& item) | |
| 497 { | |
| 498 SanityCheck(); | |
| 499 | |
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500 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 501 transaction->Begin(); |
| 502 | |
| 503 Bundle bundle = GetBundle(bundleIndex); | |
| 504 | |
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505 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 506 s.BindInt(0, bundleIndex); |
| 507 s.BindString(1, item); | |
| 508 if (s.Step()) | |
| 509 { | |
| 510 int64_t seq = s.ColumnInt64(0); | |
| 511 const std::string uuid = s.ColumnString(1); | |
| 512 uint64_t expectedSize = s.ColumnInt64(2); | |
| 513 bundle.Remove(expectedSize); | |
| 514 | |
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515 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 516 t.BindInt64(0, seq); |
| 517 if (t.Run()) | |
| 518 { | |
| 519 transaction->Commit(); | |
| 520 pimpl_->bundles_[bundleIndex] = bundle; | |
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521 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); |
| 0 | 522 } |
| 523 } | |
| 524 } | |
| 525 | |
| 526 | |
| 527 | |
| 528 void CacheManager::SetBundleQuota(int bundle, | |
| 529 uint32_t maxCount, | |
| 530 uint64_t maxSpace) | |
| 531 { | |
| 532 SanityCheck(); | |
| 533 | |
| 534 const BundleQuota quota(maxCount, maxSpace); | |
| 535 EnsureQuota(bundle, quota); | |
| 536 pimpl_->quotas_[bundle] = quota; | |
| 537 | |
| 538 SanityCheck(); | |
| 539 } | |
| 540 | |
| 541 void CacheManager::SetDefaultQuota(uint32_t maxCount, | |
| 542 uint64_t maxSpace) | |
| 543 { | |
| 544 SanityCheck(); | |
| 545 | |
| 546 pimpl_->defaultQuota_ = BundleQuota(maxCount, maxSpace); | |
| 547 | |
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548 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT DISTINCT bundle FROM Cache"); |
| 0 | 549 while (s.Step()) |
| 550 { | |
| 551 EnsureQuota(s.ColumnInt(0), pimpl_->defaultQuota_); | |
| 552 } | |
| 553 | |
| 554 SanityCheck(); | |
| 555 } | |
| 556 | |
| 557 | |
| 558 void CacheManager::Clear() | |
| 559 { | |
| 560 SanityCheck(); | |
| 561 | |
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562 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache"); |
| 0 | 563 while (s.Step()) |
| 564 { | |
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565 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 566 } |
| 567 | |
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568 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache"); |
| 0 | 569 t.Run(); |
| 570 | |
| 571 ReadBundleStatistics(); | |
| 572 SanityCheck(); | |
| 573 } | |
| 574 | |
| 575 | |
| 576 | |
| 577 void CacheManager::Clear(int bundle) | |
| 578 { | |
| 579 SanityCheck(); | |
| 580 | |
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581 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache WHERE bundle=?"); |
| 0 | 582 s.BindInt(0, bundle); |
| 583 while (s.Step()) | |
| 584 { | |
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585 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 586 } |
| 587 | |
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588 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE bundle=?"); |
| 0 | 589 t.BindInt(0, bundle); |
| 590 t.Run(); | |
| 591 | |
| 592 ReadBundleStatistics(); | |
| 593 SanityCheck(); | |
| 594 } | |
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595 |
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596 |
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597 void CacheManager::SetProperty(CacheProperty property, |
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598 const std::string& value) |
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599 { |
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600 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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601 "INSERT OR REPLACE INTO CacheProperties VALUES(?, ?)"); |
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602 s.BindInt(0, property); |
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603 s.BindString(1, value); |
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604 s.Run(); |
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605 } |
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606 |
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607 |
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608 bool CacheManager::LookupProperty(std::string& target, |
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609 CacheProperty property) |
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610 { |
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611 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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612 "SELECT value FROM CacheProperties WHERE property=?"); |
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613 s.BindInt(0, property); |
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614 |
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615 if (!s.Step()) |
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616 { |
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617 return false; |
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618 } |
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619 else |
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620 { |
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621 target = s.ColumnString(0); |
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622 return true; |
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623 } |
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624 } |
| 0 | 625 } |