Mercurial > hg > orthanc-webviewer
annotate Plugin/Cache/CacheManager.cpp @ 199:21df474deeb1 OrthancWebViewer-2.4
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 23 Apr 2018 13:40:44 +0200 |
| parents | 0ef2d8b970ab |
| children | 2f27287c047c |
| 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 |
|
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5 * Copyright (C) 2017-2018 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 <Core/Toolbox.h> |
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25 #include <Core/SQLite/Transaction.h> |
| 0 | 26 |
| 27 #include <boost/lexical_cast.hpp> | |
| 28 | |
| 29 | |
| 30 namespace OrthancPlugins | |
| 31 { | |
| 32 class CacheManager::Bundle | |
| 33 { | |
| 34 private: | |
| 35 uint32_t count_; | |
| 36 uint64_t space_; | |
| 37 | |
| 38 public: | |
| 39 Bundle() : count_(0), space_(0) | |
| 40 { | |
| 41 } | |
| 42 | |
| 43 Bundle(uint32_t count, | |
| 44 uint64_t space) : | |
| 45 count_(count), space_(space) | |
| 46 { | |
| 47 } | |
| 48 | |
| 49 uint32_t GetCount() const | |
| 50 { | |
| 51 return count_; | |
| 52 } | |
| 53 | |
| 54 uint64_t GetSpace() const | |
| 55 { | |
| 56 return space_; | |
| 57 } | |
| 58 | |
| 59 void Remove(uint64_t fileSize) | |
| 60 { | |
| 61 if (count_ == 0 || | |
| 62 space_ < fileSize) | |
| 63 { | |
| 64 throw std::runtime_error("Internal error"); | |
| 65 } | |
| 66 | |
| 67 count_ -= 1; | |
| 68 space_ -= fileSize; | |
| 69 } | |
| 70 | |
| 71 void Add(uint64_t fileSize) | |
| 72 { | |
| 73 count_ += 1; | |
| 74 space_ += fileSize; | |
| 75 } | |
| 76 }; | |
| 77 | |
| 78 | |
| 79 class CacheManager::BundleQuota | |
| 80 { | |
| 81 private: | |
| 82 uint32_t maxCount_; | |
| 83 uint64_t maxSpace_; | |
| 84 | |
| 85 public: | |
| 86 BundleQuota(uint32_t maxCount, | |
| 87 uint64_t maxSpace) : | |
| 88 maxCount_(maxCount), maxSpace_(maxSpace) | |
| 89 { | |
| 90 } | |
| 91 | |
| 92 BundleQuota() | |
| 93 { | |
| 94 // Default quota | |
| 95 maxCount_ = 0; // No limit on the number of files | |
| 96 maxSpace_ = 100 * 1024 * 1024; // Max 100MB per bundle | |
| 97 } | |
| 98 | |
| 99 uint32_t GetMaxCount() const | |
| 100 { | |
| 101 return maxCount_; | |
| 102 } | |
| 103 | |
| 104 uint64_t GetMaxSpace() const | |
| 105 { | |
| 106 return maxSpace_; | |
| 107 } | |
| 108 | |
| 109 bool IsSatisfied(const Bundle& bundle) const | |
| 110 { | |
| 111 if (maxCount_ != 0 && | |
| 112 bundle.GetCount() > maxCount_) | |
| 113 { | |
| 114 return false; | |
| 115 } | |
| 116 | |
| 117 if (maxSpace_ != 0 && | |
| 118 bundle.GetSpace() > maxSpace_) | |
| 119 { | |
| 120 return false; | |
| 121 } | |
| 122 | |
| 123 return true; | |
| 124 } | |
| 125 }; | |
| 126 | |
| 127 | |
| 128 struct CacheManager::PImpl | |
| 129 { | |
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130 OrthancPluginContext* context_; |
| 0 | 131 Orthanc::SQLite::Connection& db_; |
| 132 Orthanc::FilesystemStorage& storage_; | |
| 133 | |
| 134 bool sanityCheck_; | |
| 135 Bundles bundles_; | |
| 136 BundleQuota defaultQuota_; | |
| 137 BundleQuotas quotas_; | |
| 138 | |
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139 PImpl(OrthancPluginContext* context, |
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140 Orthanc::SQLite::Connection& db, |
| 0 | 141 Orthanc::FilesystemStorage& storage) : |
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142 context_(context), |
| 0 | 143 db_(db), |
| 144 storage_(storage), | |
| 145 sanityCheck_(false) | |
| 146 { | |
| 147 } | |
| 148 }; | |
| 149 | |
| 150 | |
| 151 const CacheManager::BundleQuota& CacheManager::GetBundleQuota(int bundleIndex) const | |
| 152 { | |
| 153 BundleQuotas::const_iterator found = pimpl_->quotas_.find(bundleIndex); | |
| 154 | |
| 155 if (found == pimpl_->quotas_.end()) | |
| 156 { | |
| 157 return pimpl_->defaultQuota_; | |
| 158 } | |
| 159 else | |
| 160 { | |
| 161 return found->second; | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 | |
| 166 CacheManager::Bundle CacheManager::GetBundle(int bundleIndex) const | |
| 167 { | |
| 168 Bundles::const_iterator it = pimpl_->bundles_.find(bundleIndex); | |
| 169 | |
| 170 if (it == pimpl_->bundles_.end()) | |
| 171 { | |
| 172 return Bundle(); | |
| 173 } | |
| 174 else | |
| 175 { | |
| 176 return it->second; | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 | |
| 181 void CacheManager::MakeRoom(Bundle& bundle, | |
| 182 std::list<std::string>& toRemove, | |
| 183 int bundleIndex, | |
| 184 const BundleQuota& quota) | |
| 185 { | |
| 186 using namespace Orthanc; | |
| 187 | |
| 188 toRemove.clear(); | |
| 189 | |
| 190 // Make room in the bundle | |
| 191 while (!quota.IsSatisfied(bundle)) | |
| 192 { | |
| 193 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? ORDER BY seq"); | |
| 194 s.BindInt(0, bundleIndex); | |
| 195 | |
| 196 if (s.Step()) | |
| 197 { | |
| 198 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 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 using namespace Orthanc; | |
| 219 | |
| 220 // Remove the cached files that exceed the quota | |
| 221 std::auto_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); | |
| 222 transaction->Begin(); | |
| 223 | |
| 224 Bundle bundle = GetBundle(bundleIndex); | |
| 225 | |
| 226 std::list<std::string> toRemove; | |
| 227 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 228 | |
| 229 transaction->Commit(); | |
| 230 for (std::list<std::string>::const_iterator | |
| 197 | 231 it = toRemove.begin(); it != toRemove.end(); ++it) |
| 0 | 232 { |
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233 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); |
| 0 | 234 } |
| 235 | |
| 236 pimpl_->bundles_[bundleIndex] = bundle; | |
| 237 } | |
| 238 | |
| 239 | |
| 240 | |
| 241 void CacheManager::ReadBundleStatistics() | |
| 242 { | |
| 243 using namespace Orthanc; | |
| 244 | |
| 245 pimpl_->bundles_.clear(); | |
| 246 | |
| 247 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); | |
| 248 while (s.Step()) | |
| 249 { | |
| 250 int index = s.ColumnInt(0); | |
| 251 Bundle bundle(static_cast<uint32_t>(s.ColumnInt(1)), | |
| 252 static_cast<uint64_t>(s.ColumnInt64(2))); | |
| 253 pimpl_->bundles_[index] = bundle; | |
| 254 } | |
| 255 } | |
| 256 | |
| 257 | |
| 258 | |
| 259 void CacheManager::SanityCheck() | |
| 260 { | |
| 261 if (!pimpl_->sanityCheck_) | |
| 262 { | |
| 263 return; | |
| 264 } | |
| 265 | |
| 266 using namespace Orthanc; | |
| 267 | |
| 268 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); | |
| 269 while (s.Step()) | |
| 270 { | |
| 271 const Bundle& bundle = GetBundle(s.ColumnInt(0)); | |
| 272 if (bundle.GetCount() != static_cast<uint32_t>(s.ColumnInt(1)) || | |
| 273 bundle.GetSpace() != static_cast<uint64_t>(s.ColumnInt64(2))) | |
| 274 { | |
| 275 throw std::runtime_error("SANITY ERROR in cache: " + boost::lexical_cast<std::string>(bundle.GetCount()) | |
| 276 + "/" + boost::lexical_cast<std::string>(bundle.GetSpace()) | |
| 277 + " vs " + boost::lexical_cast<std::string>(s.ColumnInt(1)) + "/" | |
| 278 + boost::lexical_cast<std::string>(s.ColumnInt64(2))); | |
| 279 } | |
| 280 } | |
| 281 } | |
| 282 | |
| 283 | |
| 284 | |
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285 CacheManager::CacheManager(OrthancPluginContext* context, |
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286 Orthanc::SQLite::Connection& db, |
| 0 | 287 Orthanc::FilesystemStorage& storage) : |
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288 pimpl_(new PImpl(context, db, storage)) |
| 0 | 289 { |
| 290 Open(); | |
| 291 ReadBundleStatistics(); | |
| 292 } | |
| 293 | |
| 294 | |
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295 OrthancPluginContext* CacheManager::GetPluginContext() const |
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296 { |
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297 return pimpl_->context_; |
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298 } |
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299 |
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300 |
| 0 | 301 void CacheManager::SetSanityCheckEnabled(bool enabled) |
| 302 { | |
| 303 pimpl_->sanityCheck_ = enabled; | |
| 304 } | |
| 305 | |
| 306 | |
| 307 void CacheManager::Open() | |
| 308 { | |
| 309 if (!pimpl_->db_.DoesTableExist("Cache")) | |
| 310 { | |
| 311 pimpl_->db_.Execute("CREATE TABLE Cache(seq INTEGER PRIMARY KEY, bundle INTEGER, item TEXT, fileUuid TEXT, fileSize INT);"); | |
| 312 pimpl_->db_.Execute("CREATE INDEX CacheBundles ON Cache(bundle);"); | |
| 313 pimpl_->db_.Execute("CREATE INDEX CacheIndex ON Cache(bundle, item);"); | |
| 314 } | |
| 315 | |
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316 if (!pimpl_->db_.DoesTableExist("CacheProperties")) |
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317 { |
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318 pimpl_->db_.Execute("CREATE TABLE CacheProperties(property INTEGER PRIMARY KEY, value TEXT);"); |
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319 } |
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320 |
| 0 | 321 // Performance tuning of SQLite with PRAGMAs |
| 322 // http://www.sqlite.org/pragma.html | |
| 323 pimpl_->db_.Execute("PRAGMA SYNCHRONOUS=OFF;"); | |
| 324 pimpl_->db_.Execute("PRAGMA JOURNAL_MODE=WAL;"); | |
| 325 pimpl_->db_.Execute("PRAGMA LOCKING_MODE=EXCLUSIVE;"); | |
| 326 } | |
| 327 | |
| 328 | |
| 329 void CacheManager::Store(int bundleIndex, | |
| 330 const std::string& item, | |
| 331 const std::string& content) | |
| 332 { | |
| 333 SanityCheck(); | |
| 334 | |
| 335 const BundleQuota quota = GetBundleQuota(bundleIndex); | |
| 336 | |
| 337 if (quota.GetMaxSpace() > 0 && | |
| 338 content.size() > quota.GetMaxSpace()) | |
| 339 { | |
| 340 // Cannot store such a large instance into the cache, forget about it | |
| 341 return; | |
| 342 } | |
| 343 | |
| 344 using namespace Orthanc; | |
| 345 | |
| 346 std::auto_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); | |
| 347 transaction->Begin(); | |
| 348 | |
| 349 Bundle bundle = GetBundle(bundleIndex); | |
| 350 | |
| 351 std::list<std::string> toRemove; | |
| 352 bundle.Add(content.size()); | |
| 353 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 354 | |
| 355 // Store the cached content on the disk | |
| 356 const char* data = content.size() ? &content[0] : NULL; | |
| 188 | 357 std::string uuid = Toolbox::GenerateUuid(); |
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358 pimpl_->storage_.Create(uuid, data, content.size(), Orthanc::FileContentType_Unknown); |
| 0 | 359 |
| 360 // Remove the previous cached value. This might happen if the same | |
| 361 // item is accessed very quickly twice: Another factory could have | |
| 362 // been cached a value before the check for existence in Access(). | |
| 363 { | |
| 364 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); | |
| 365 s.BindInt(0, bundleIndex); | |
| 366 s.BindString(1, item); | |
| 367 if (s.Step()) | |
| 368 { | |
| 369 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 370 t.BindInt64(0, s.ColumnInt64(0)); | |
| 371 t.Run(); | |
| 372 | |
| 373 toRemove.push_back(s.ColumnString(1)); | |
| 374 bundle.Remove(s.ColumnInt64(2)); | |
| 375 } | |
| 376 } | |
| 377 | |
| 378 { | |
| 379 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); | |
| 380 s.BindInt(0, bundleIndex); | |
| 381 s.BindString(1, item); | |
| 382 s.BindString(2, uuid); | |
| 383 s.BindInt64(3, content.size()); | |
| 384 | |
| 385 if (!s.Run()) | |
| 386 { | |
| 197 | 387 // Error: Remove the stored file |
| 388 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); | |
| 0 | 389 } |
| 197 | 390 else |
| 391 { | |
| 392 transaction->Commit(); | |
| 0 | 393 |
| 197 | 394 pimpl_->bundles_[bundleIndex] = bundle; |
| 0 | 395 |
| 197 | 396 for (std::list<std::string>::const_iterator |
| 397 it = toRemove.begin(); it != toRemove.end(); ++it) | |
| 398 { | |
| 399 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); | |
| 400 } | |
| 0 | 401 } |
| 402 } | |
| 403 | |
| 404 SanityCheck(); | |
| 405 } | |
| 406 | |
| 407 | |
| 408 | |
| 409 bool CacheManager::LocateInCache(std::string& uuid, | |
| 410 uint64_t& size, | |
| 411 int bundle, | |
| 412 const std::string& item) | |
| 413 { | |
| 414 using namespace Orthanc; | |
| 415 SanityCheck(); | |
| 416 | |
| 417 std::auto_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); | |
| 418 transaction->Begin(); | |
| 419 | |
| 420 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); | |
| 421 s.BindInt(0, bundle); | |
| 422 s.BindString(1, item); | |
| 423 if (!s.Step()) | |
| 424 { | |
| 425 return false; | |
| 426 } | |
| 427 | |
| 428 int64_t seq = s.ColumnInt64(0); | |
| 429 uuid = s.ColumnString(1); | |
| 430 size = s.ColumnInt64(2); | |
| 431 | |
| 432 // Touch the cache to fulfill the LRU scheme. | |
| 433 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 434 t.BindInt64(0, seq); | |
| 435 if (t.Run()) | |
| 436 { | |
| 437 SQLite::Statement u(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); | |
| 438 u.BindInt(0, bundle); | |
| 439 u.BindString(1, item); | |
| 440 u.BindString(2, uuid); | |
| 441 u.BindInt64(3, size); | |
| 442 if (u.Run()) | |
| 443 { | |
| 444 // Everything was OK. Commit the changes to the cache. | |
| 445 transaction->Commit(); | |
| 446 return true; | |
| 447 } | |
| 448 } | |
| 449 | |
| 450 return false; | |
| 451 } | |
| 452 | |
| 453 | |
| 454 bool CacheManager::IsCached(int bundle, | |
| 455 const std::string& item) | |
| 456 { | |
| 457 std::string uuid; | |
| 458 uint64_t size; | |
| 459 return LocateInCache(uuid, size, bundle, item); | |
| 460 } | |
| 461 | |
| 462 | |
| 463 bool CacheManager::Access(std::string& content, | |
| 464 int bundle, | |
| 465 const std::string& item) | |
| 466 { | |
| 467 std::string uuid; | |
| 468 uint64_t size; | |
| 469 if (!LocateInCache(uuid, size, bundle, item)) | |
| 470 { | |
| 471 return false; | |
| 472 } | |
| 473 | |
| 474 bool ok; | |
| 475 try | |
| 476 { | |
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477 pimpl_->storage_.Read(content, uuid, Orthanc::FileContentType_Unknown); |
| 0 | 478 ok = (content.size() == size); |
| 479 } | |
| 480 catch (std::runtime_error&) | |
| 481 { | |
| 482 ok = false; | |
| 483 } | |
| 484 | |
| 485 if (ok) | |
| 486 { | |
| 487 return true; | |
| 488 } | |
| 489 else | |
| 490 { | |
| 491 throw std::runtime_error("Error in the filesystem"); | |
| 492 } | |
| 493 } | |
| 494 | |
| 495 | |
| 496 void CacheManager::Invalidate(int bundleIndex, | |
| 497 const std::string& item) | |
| 498 { | |
| 499 using namespace Orthanc; | |
| 500 SanityCheck(); | |
| 501 | |
| 502 std::auto_ptr<SQLite::Transaction> transaction(new SQLite::Transaction(pimpl_->db_)); | |
| 503 transaction->Begin(); | |
| 504 | |
| 505 Bundle bundle = GetBundle(bundleIndex); | |
| 506 | |
| 507 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); | |
| 508 s.BindInt(0, bundleIndex); | |
| 509 s.BindString(1, item); | |
| 510 if (s.Step()) | |
| 511 { | |
| 512 int64_t seq = s.ColumnInt64(0); | |
| 513 const std::string uuid = s.ColumnString(1); | |
| 514 uint64_t expectedSize = s.ColumnInt64(2); | |
| 515 bundle.Remove(expectedSize); | |
| 516 | |
| 517 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); | |
| 518 t.BindInt64(0, seq); | |
| 519 if (t.Run()) | |
| 520 { | |
| 521 transaction->Commit(); | |
| 522 pimpl_->bundles_[bundleIndex] = bundle; | |
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523 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); |
| 0 | 524 } |
| 525 } | |
| 526 } | |
| 527 | |
| 528 | |
| 529 | |
| 530 void CacheManager::SetBundleQuota(int bundle, | |
| 531 uint32_t maxCount, | |
| 532 uint64_t maxSpace) | |
| 533 { | |
| 534 SanityCheck(); | |
| 535 | |
| 536 const BundleQuota quota(maxCount, maxSpace); | |
| 537 EnsureQuota(bundle, quota); | |
| 538 pimpl_->quotas_[bundle] = quota; | |
| 539 | |
| 540 SanityCheck(); | |
| 541 } | |
| 542 | |
| 543 void CacheManager::SetDefaultQuota(uint32_t maxCount, | |
| 544 uint64_t maxSpace) | |
| 545 { | |
| 546 using namespace Orthanc; | |
| 547 SanityCheck(); | |
| 548 | |
| 549 pimpl_->defaultQuota_ = BundleQuota(maxCount, maxSpace); | |
| 550 | |
| 551 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT DISTINCT bundle FROM Cache"); | |
| 552 while (s.Step()) | |
| 553 { | |
| 554 EnsureQuota(s.ColumnInt(0), pimpl_->defaultQuota_); | |
| 555 } | |
| 556 | |
| 557 SanityCheck(); | |
| 558 } | |
| 559 | |
| 560 | |
| 561 void CacheManager::Clear() | |
| 562 { | |
| 563 using namespace Orthanc; | |
| 564 SanityCheck(); | |
| 565 | |
| 566 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache"); | |
| 567 while (s.Step()) | |
| 568 { | |
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569 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 570 } |
| 571 | |
| 572 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache"); | |
| 573 t.Run(); | |
| 574 | |
| 575 ReadBundleStatistics(); | |
| 576 SanityCheck(); | |
| 577 } | |
| 578 | |
| 579 | |
| 580 | |
| 581 void CacheManager::Clear(int bundle) | |
| 582 { | |
| 583 using namespace Orthanc; | |
| 584 SanityCheck(); | |
| 585 | |
| 586 SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache WHERE bundle=?"); | |
| 587 s.BindInt(0, bundle); | |
| 588 while (s.Step()) | |
| 589 { | |
|
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590 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 591 } |
| 592 | |
| 593 SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE bundle=?"); | |
| 594 t.BindInt(0, bundle); | |
| 595 t.Run(); | |
| 596 | |
| 597 ReadBundleStatistics(); | |
| 598 SanityCheck(); | |
| 599 } | |
|
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600 |
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601 |
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602 void CacheManager::SetProperty(CacheProperty property, |
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603 const std::string& value) |
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604 { |
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605 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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606 "INSERT OR REPLACE INTO CacheProperties VALUES(?, ?)"); |
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607 s.BindInt(0, property); |
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608 s.BindString(1, value); |
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609 s.Run(); |
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610 } |
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611 |
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612 |
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613 bool CacheManager::LookupProperty(std::string& target, |
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614 CacheProperty property) |
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615 { |
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616 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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617 "SELECT value FROM CacheProperties WHERE property=?"); |
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618 s.BindInt(0, property); |
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619 |
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620 if (!s.Step()) |
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621 { |
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622 return false; |
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623 } |
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624 else |
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625 { |
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626 target = s.ColumnString(0); |
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627 return true; |
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628 } |
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629 } |
| 0 | 630 } |