Mercurial > hg > orthanc-webviewer
annotate Plugin/Cache/CacheManager.cpp @ 303:fb7d62e3235e
sync
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 21 Feb 2022 17:16:10 +0100 |
| parents | d179f3928342 |
| children | 0a1ad7492050 |
| rev | line source |
|---|---|
| 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 |
| 303 | 5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
| 6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium | |
| 0 | 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 "CacheManager.h" | |
| 24 | |
|
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25 #include <Compatibility.h> |
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26 #include <Toolbox.h> |
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27 #include <SQLite/Transaction.h> |
| 0 | 28 |
| 29 #include <boost/lexical_cast.hpp> | |
| 30 | |
| 31 | |
| 32 namespace OrthancPlugins | |
| 33 { | |
| 34 class CacheManager::Bundle | |
| 35 { | |
| 36 private: | |
| 37 uint32_t count_; | |
| 38 uint64_t space_; | |
| 39 | |
| 40 public: | |
| 41 Bundle() : count_(0), space_(0) | |
| 42 { | |
| 43 } | |
| 44 | |
| 45 Bundle(uint32_t count, | |
| 46 uint64_t space) : | |
| 47 count_(count), space_(space) | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 uint32_t GetCount() const | |
| 52 { | |
| 53 return count_; | |
| 54 } | |
| 55 | |
| 56 uint64_t GetSpace() const | |
| 57 { | |
| 58 return space_; | |
| 59 } | |
| 60 | |
| 61 void Remove(uint64_t fileSize) | |
| 62 { | |
| 63 if (count_ == 0 || | |
| 64 space_ < fileSize) | |
| 65 { | |
| 66 throw std::runtime_error("Internal error"); | |
| 67 } | |
| 68 | |
| 69 count_ -= 1; | |
| 70 space_ -= fileSize; | |
| 71 } | |
| 72 | |
| 73 void Add(uint64_t fileSize) | |
| 74 { | |
| 75 count_ += 1; | |
| 76 space_ += fileSize; | |
| 77 } | |
| 78 }; | |
| 79 | |
| 80 | |
| 81 class CacheManager::BundleQuota | |
| 82 { | |
| 83 private: | |
| 84 uint32_t maxCount_; | |
| 85 uint64_t maxSpace_; | |
| 86 | |
| 87 public: | |
| 88 BundleQuota(uint32_t maxCount, | |
| 89 uint64_t maxSpace) : | |
| 90 maxCount_(maxCount), maxSpace_(maxSpace) | |
| 91 { | |
| 92 } | |
| 93 | |
| 94 BundleQuota() | |
| 95 { | |
| 96 // Default quota | |
| 97 maxCount_ = 0; // No limit on the number of files | |
| 98 maxSpace_ = 100 * 1024 * 1024; // Max 100MB per bundle | |
| 99 } | |
| 100 | |
| 101 uint32_t GetMaxCount() const | |
| 102 { | |
| 103 return maxCount_; | |
| 104 } | |
| 105 | |
| 106 uint64_t GetMaxSpace() const | |
| 107 { | |
| 108 return maxSpace_; | |
| 109 } | |
| 110 | |
| 111 bool IsSatisfied(const Bundle& bundle) const | |
| 112 { | |
| 113 if (maxCount_ != 0 && | |
| 114 bundle.GetCount() > maxCount_) | |
| 115 { | |
| 116 return false; | |
| 117 } | |
| 118 | |
| 119 if (maxSpace_ != 0 && | |
| 120 bundle.GetSpace() > maxSpace_) | |
| 121 { | |
| 122 return false; | |
| 123 } | |
| 124 | |
| 125 return true; | |
| 126 } | |
| 127 }; | |
| 128 | |
| 129 | |
| 130 struct CacheManager::PImpl | |
| 131 { | |
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132 OrthancPluginContext* context_; |
| 0 | 133 Orthanc::SQLite::Connection& db_; |
| 134 Orthanc::FilesystemStorage& storage_; | |
| 135 | |
| 136 bool sanityCheck_; | |
| 137 Bundles bundles_; | |
| 138 BundleQuota defaultQuota_; | |
| 139 BundleQuotas quotas_; | |
| 140 | |
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141 PImpl(OrthancPluginContext* context, |
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142 Orthanc::SQLite::Connection& db, |
| 0 | 143 Orthanc::FilesystemStorage& storage) : |
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144 context_(context), |
| 0 | 145 db_(db), |
| 146 storage_(storage), | |
| 147 sanityCheck_(false) | |
| 148 { | |
| 149 } | |
| 150 }; | |
| 151 | |
| 152 | |
| 153 const CacheManager::BundleQuota& CacheManager::GetBundleQuota(int bundleIndex) const | |
| 154 { | |
| 155 BundleQuotas::const_iterator found = pimpl_->quotas_.find(bundleIndex); | |
| 156 | |
| 157 if (found == pimpl_->quotas_.end()) | |
| 158 { | |
| 159 return pimpl_->defaultQuota_; | |
| 160 } | |
| 161 else | |
| 162 { | |
| 163 return found->second; | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 | |
| 168 CacheManager::Bundle CacheManager::GetBundle(int bundleIndex) const | |
| 169 { | |
| 170 Bundles::const_iterator it = pimpl_->bundles_.find(bundleIndex); | |
| 171 | |
| 172 if (it == pimpl_->bundles_.end()) | |
| 173 { | |
| 174 return Bundle(); | |
| 175 } | |
| 176 else | |
| 177 { | |
| 178 return it->second; | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 | |
| 183 void CacheManager::MakeRoom(Bundle& bundle, | |
| 184 std::list<std::string>& toRemove, | |
| 185 int bundleIndex, | |
| 186 const BundleQuota& quota) | |
| 187 { | |
| 188 toRemove.clear(); | |
| 189 | |
| 190 // Make room in the bundle | |
| 191 while (!quota.IsSatisfied(bundle)) | |
| 192 { | |
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193 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? ORDER BY seq"); |
| 0 | 194 s.BindInt(0, bundleIndex); |
| 195 | |
| 196 if (s.Step()) | |
| 197 { | |
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198 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 199 t.BindInt64(0, s.ColumnInt64(0)); |
| 200 t.Run(); | |
| 201 | |
| 202 toRemove.push_back(s.ColumnString(1)); | |
| 203 bundle.Remove(s.ColumnInt64(2)); | |
| 204 } | |
| 205 else | |
| 206 { | |
| 207 // Should never happen | |
| 208 throw std::runtime_error("Internal error"); | |
| 209 } | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 | |
| 214 | |
| 215 void CacheManager::EnsureQuota(int bundleIndex, | |
| 216 const BundleQuota& quota) | |
| 217 { | |
| 218 // Remove the cached files that exceed the quota | |
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219 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 220 transaction->Begin(); |
| 221 | |
| 222 Bundle bundle = GetBundle(bundleIndex); | |
| 223 | |
| 224 std::list<std::string> toRemove; | |
| 225 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 226 | |
| 227 transaction->Commit(); | |
| 228 for (std::list<std::string>::const_iterator | |
| 197 | 229 it = toRemove.begin(); it != toRemove.end(); ++it) |
| 0 | 230 { |
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231 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); |
| 0 | 232 } |
| 233 | |
| 234 pimpl_->bundles_[bundleIndex] = bundle; | |
| 235 } | |
| 236 | |
| 237 | |
| 238 | |
| 239 void CacheManager::ReadBundleStatistics() | |
| 240 { | |
| 241 pimpl_->bundles_.clear(); | |
| 242 | |
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243 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); |
| 0 | 244 while (s.Step()) |
| 245 { | |
| 246 int index = s.ColumnInt(0); | |
| 247 Bundle bundle(static_cast<uint32_t>(s.ColumnInt(1)), | |
| 248 static_cast<uint64_t>(s.ColumnInt64(2))); | |
| 249 pimpl_->bundles_[index] = bundle; | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 | |
| 254 | |
| 255 void CacheManager::SanityCheck() | |
| 256 { | |
| 257 if (!pimpl_->sanityCheck_) | |
| 258 { | |
| 259 return; | |
| 260 } | |
| 261 | |
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262 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); |
| 0 | 263 while (s.Step()) |
| 264 { | |
| 265 const Bundle& bundle = GetBundle(s.ColumnInt(0)); | |
| 266 if (bundle.GetCount() != static_cast<uint32_t>(s.ColumnInt(1)) || | |
| 267 bundle.GetSpace() != static_cast<uint64_t>(s.ColumnInt64(2))) | |
| 268 { | |
| 269 throw std::runtime_error("SANITY ERROR in cache: " + boost::lexical_cast<std::string>(bundle.GetCount()) | |
| 270 + "/" + boost::lexical_cast<std::string>(bundle.GetSpace()) | |
| 271 + " vs " + boost::lexical_cast<std::string>(s.ColumnInt(1)) + "/" | |
| 272 + boost::lexical_cast<std::string>(s.ColumnInt64(2))); | |
| 273 } | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 | |
| 278 | |
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279 CacheManager::CacheManager(OrthancPluginContext* context, |
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280 Orthanc::SQLite::Connection& db, |
| 0 | 281 Orthanc::FilesystemStorage& storage) : |
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282 pimpl_(new PImpl(context, db, storage)) |
| 0 | 283 { |
| 284 Open(); | |
| 285 ReadBundleStatistics(); | |
| 286 } | |
| 287 | |
| 288 | |
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289 OrthancPluginContext* CacheManager::GetPluginContext() const |
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290 { |
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291 return pimpl_->context_; |
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292 } |
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293 |
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294 |
| 0 | 295 void CacheManager::SetSanityCheckEnabled(bool enabled) |
| 296 { | |
| 297 pimpl_->sanityCheck_ = enabled; | |
| 298 } | |
| 299 | |
| 300 | |
| 301 void CacheManager::Open() | |
| 302 { | |
| 303 if (!pimpl_->db_.DoesTableExist("Cache")) | |
| 304 { | |
| 305 pimpl_->db_.Execute("CREATE TABLE Cache(seq INTEGER PRIMARY KEY, bundle INTEGER, item TEXT, fileUuid TEXT, fileSize INT);"); | |
| 306 pimpl_->db_.Execute("CREATE INDEX CacheBundles ON Cache(bundle);"); | |
| 307 pimpl_->db_.Execute("CREATE INDEX CacheIndex ON Cache(bundle, item);"); | |
| 308 } | |
| 309 | |
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310 if (!pimpl_->db_.DoesTableExist("CacheProperties")) |
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311 { |
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312 pimpl_->db_.Execute("CREATE TABLE CacheProperties(property INTEGER PRIMARY KEY, value TEXT);"); |
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313 } |
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314 |
| 0 | 315 // Performance tuning of SQLite with PRAGMAs |
| 316 // http://www.sqlite.org/pragma.html | |
| 317 pimpl_->db_.Execute("PRAGMA SYNCHRONOUS=OFF;"); | |
| 318 pimpl_->db_.Execute("PRAGMA JOURNAL_MODE=WAL;"); | |
| 319 pimpl_->db_.Execute("PRAGMA LOCKING_MODE=EXCLUSIVE;"); | |
| 320 } | |
| 321 | |
| 322 | |
| 323 void CacheManager::Store(int bundleIndex, | |
| 324 const std::string& item, | |
| 325 const std::string& content) | |
| 326 { | |
| 327 SanityCheck(); | |
| 328 | |
| 329 const BundleQuota quota = GetBundleQuota(bundleIndex); | |
| 330 | |
| 331 if (quota.GetMaxSpace() > 0 && | |
| 332 content.size() > quota.GetMaxSpace()) | |
| 333 { | |
| 334 // Cannot store such a large instance into the cache, forget about it | |
| 335 return; | |
| 336 } | |
| 337 | |
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338 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 339 transaction->Begin(); |
| 340 | |
| 341 Bundle bundle = GetBundle(bundleIndex); | |
| 342 | |
| 343 std::list<std::string> toRemove; | |
| 344 bundle.Add(content.size()); | |
| 345 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 346 | |
| 347 // Store the cached content on the disk | |
| 348 const char* data = content.size() ? &content[0] : NULL; | |
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349 std::string uuid = Orthanc::Toolbox::GenerateUuid(); |
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350 pimpl_->storage_.Create(uuid, data, content.size(), Orthanc::FileContentType_Unknown); |
| 0 | 351 |
| 352 // Remove the previous cached value. This might happen if the same | |
| 353 // item is accessed very quickly twice: Another factory could have | |
| 354 // been cached a value before the check for existence in Access(). | |
| 355 { | |
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356 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 357 s.BindInt(0, bundleIndex); |
| 358 s.BindString(1, item); | |
| 359 if (s.Step()) | |
| 360 { | |
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361 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 362 t.BindInt64(0, s.ColumnInt64(0)); |
| 363 t.Run(); | |
| 364 | |
| 365 toRemove.push_back(s.ColumnString(1)); | |
| 366 bundle.Remove(s.ColumnInt64(2)); | |
| 367 } | |
| 368 } | |
| 369 | |
| 370 { | |
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371 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); |
| 0 | 372 s.BindInt(0, bundleIndex); |
| 373 s.BindString(1, item); | |
| 374 s.BindString(2, uuid); | |
| 375 s.BindInt64(3, content.size()); | |
| 376 | |
| 377 if (!s.Run()) | |
| 378 { | |
| 197 | 379 // Error: Remove the stored file |
| 380 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); | |
| 0 | 381 } |
| 197 | 382 else |
| 383 { | |
| 384 transaction->Commit(); | |
| 0 | 385 |
| 197 | 386 pimpl_->bundles_[bundleIndex] = bundle; |
| 0 | 387 |
| 197 | 388 for (std::list<std::string>::const_iterator |
| 389 it = toRemove.begin(); it != toRemove.end(); ++it) | |
| 390 { | |
| 391 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); | |
| 392 } | |
| 0 | 393 } |
| 394 } | |
| 395 | |
| 396 SanityCheck(); | |
| 397 } | |
| 398 | |
| 399 | |
| 400 | |
| 401 bool CacheManager::LocateInCache(std::string& uuid, | |
| 402 uint64_t& size, | |
| 403 int bundle, | |
| 404 const std::string& item) | |
| 405 { | |
| 406 SanityCheck(); | |
| 407 | |
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408 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 409 transaction->Begin(); |
| 410 | |
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411 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 412 s.BindInt(0, bundle); |
| 413 s.BindString(1, item); | |
| 414 if (!s.Step()) | |
| 415 { | |
| 416 return false; | |
| 417 } | |
| 418 | |
| 419 int64_t seq = s.ColumnInt64(0); | |
| 420 uuid = s.ColumnString(1); | |
| 421 size = s.ColumnInt64(2); | |
| 422 | |
| 423 // Touch the cache to fulfill the LRU scheme. | |
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424 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 425 t.BindInt64(0, seq); |
| 426 if (t.Run()) | |
| 427 { | |
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428 Orthanc::SQLite::Statement u(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); |
| 0 | 429 u.BindInt(0, bundle); |
| 430 u.BindString(1, item); | |
| 431 u.BindString(2, uuid); | |
| 432 u.BindInt64(3, size); | |
| 433 if (u.Run()) | |
| 434 { | |
| 435 // Everything was OK. Commit the changes to the cache. | |
| 436 transaction->Commit(); | |
| 437 return true; | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 return false; | |
| 442 } | |
| 443 | |
| 444 | |
| 445 bool CacheManager::IsCached(int bundle, | |
| 446 const std::string& item) | |
| 447 { | |
| 448 std::string uuid; | |
| 449 uint64_t size; | |
| 450 return LocateInCache(uuid, size, bundle, item); | |
| 451 } | |
| 452 | |
| 453 | |
| 454 bool CacheManager::Access(std::string& content, | |
| 455 int bundle, | |
| 456 const std::string& item) | |
| 457 { | |
| 458 std::string uuid; | |
| 459 uint64_t size; | |
| 460 if (!LocateInCache(uuid, size, bundle, item)) | |
| 461 { | |
| 462 return false; | |
| 463 } | |
| 464 | |
| 465 bool ok; | |
| 466 try | |
| 467 { | |
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468 #if defined(ORTHANC_FRAMEWORK_VERSION_IS_ABOVE) && ORTHANC_FRAMEWORK_VERSION_IS_ABOVE(1, 9, 0) |
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469 std::unique_ptr<Orthanc::IMemoryBuffer> buffer( |
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470 pimpl_->storage_.Read(uuid, Orthanc::FileContentType_Unknown)); |
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471 buffer->MoveToString(content); |
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472 #else |
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473 pimpl_->storage_.Read(content, uuid, Orthanc::FileContentType_Unknown); |
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474 #endif |
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475 |
| 0 | 476 ok = (content.size() == size); |
| 477 } | |
| 478 catch (std::runtime_error&) | |
| 479 { | |
| 480 ok = false; | |
| 481 } | |
| 482 | |
| 483 if (ok) | |
| 484 { | |
| 485 return true; | |
| 486 } | |
| 487 else | |
| 488 { | |
| 489 throw std::runtime_error("Error in the filesystem"); | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 | |
| 494 void CacheManager::Invalidate(int bundleIndex, | |
| 495 const std::string& item) | |
| 496 { | |
| 497 SanityCheck(); | |
| 498 | |
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499 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 500 transaction->Begin(); |
| 501 | |
| 502 Bundle bundle = GetBundle(bundleIndex); | |
| 503 | |
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504 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 505 s.BindInt(0, bundleIndex); |
| 506 s.BindString(1, item); | |
| 507 if (s.Step()) | |
| 508 { | |
| 509 int64_t seq = s.ColumnInt64(0); | |
| 510 const std::string uuid = s.ColumnString(1); | |
| 511 uint64_t expectedSize = s.ColumnInt64(2); | |
| 512 bundle.Remove(expectedSize); | |
| 513 | |
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514 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 515 t.BindInt64(0, seq); |
| 516 if (t.Run()) | |
| 517 { | |
| 518 transaction->Commit(); | |
| 519 pimpl_->bundles_[bundleIndex] = bundle; | |
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520 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); |
| 0 | 521 } |
| 522 } | |
| 523 } | |
| 524 | |
| 525 | |
| 526 | |
| 527 void CacheManager::SetBundleQuota(int bundle, | |
| 528 uint32_t maxCount, | |
| 529 uint64_t maxSpace) | |
| 530 { | |
| 531 SanityCheck(); | |
| 532 | |
| 533 const BundleQuota quota(maxCount, maxSpace); | |
| 534 EnsureQuota(bundle, quota); | |
| 535 pimpl_->quotas_[bundle] = quota; | |
| 536 | |
| 537 SanityCheck(); | |
| 538 } | |
| 539 | |
| 540 void CacheManager::SetDefaultQuota(uint32_t maxCount, | |
| 541 uint64_t maxSpace) | |
| 542 { | |
| 543 SanityCheck(); | |
| 544 | |
| 545 pimpl_->defaultQuota_ = BundleQuota(maxCount, maxSpace); | |
| 546 | |
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547 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT DISTINCT bundle FROM Cache"); |
| 0 | 548 while (s.Step()) |
| 549 { | |
| 550 EnsureQuota(s.ColumnInt(0), pimpl_->defaultQuota_); | |
| 551 } | |
| 552 | |
| 553 SanityCheck(); | |
| 554 } | |
| 555 | |
| 556 | |
| 557 void CacheManager::Clear() | |
| 558 { | |
| 559 SanityCheck(); | |
| 560 | |
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561 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache"); |
| 0 | 562 while (s.Step()) |
| 563 { | |
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564 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 565 } |
| 566 | |
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567 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache"); |
| 0 | 568 t.Run(); |
| 569 | |
| 570 ReadBundleStatistics(); | |
| 571 SanityCheck(); | |
| 572 } | |
| 573 | |
| 574 | |
| 575 | |
| 576 void CacheManager::Clear(int bundle) | |
| 577 { | |
| 578 SanityCheck(); | |
| 579 | |
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580 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache WHERE bundle=?"); |
| 0 | 581 s.BindInt(0, bundle); |
| 582 while (s.Step()) | |
| 583 { | |
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584 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 585 } |
| 586 | |
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587 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE bundle=?"); |
| 0 | 588 t.BindInt(0, bundle); |
| 589 t.Run(); | |
| 590 | |
| 591 ReadBundleStatistics(); | |
| 592 SanityCheck(); | |
| 593 } | |
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594 |
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595 |
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596 void CacheManager::SetProperty(CacheProperty property, |
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597 const std::string& value) |
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598 { |
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599 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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600 "INSERT OR REPLACE INTO CacheProperties VALUES(?, ?)"); |
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601 s.BindInt(0, property); |
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602 s.BindString(1, value); |
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603 s.Run(); |
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604 } |
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605 |
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606 |
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607 bool CacheManager::LookupProperty(std::string& target, |
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608 CacheProperty property) |
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609 { |
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610 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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611 "SELECT value FROM CacheProperties WHERE property=?"); |
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612 s.BindInt(0, property); |
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613 |
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614 if (!s.Step()) |
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615 { |
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616 return false; |
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617 } |
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618 else |
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619 { |
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620 target = s.ColumnString(0); |
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621 return true; |
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622 } |
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623 } |
| 0 | 624 } |