Mercurial > hg > orthanc-webviewer
annotate Plugin/Cache/CacheManager.cpp @ 296:d179f3928342
removed "using namespace Orthanc"
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sat, 30 Jan 2021 12:26:50 +0100 |
| parents | fc57bf7c0c83 |
| children | fb7d62e3235e |
| 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) 2017-2021 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 toRemove.clear(); | |
| 188 | |
| 189 // Make room in the bundle | |
| 190 while (!quota.IsSatisfied(bundle)) | |
| 191 { | |
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192 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? ORDER BY seq"); |
| 0 | 193 s.BindInt(0, bundleIndex); |
| 194 | |
| 195 if (s.Step()) | |
| 196 { | |
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197 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 198 t.BindInt64(0, s.ColumnInt64(0)); |
| 199 t.Run(); | |
| 200 | |
| 201 toRemove.push_back(s.ColumnString(1)); | |
| 202 bundle.Remove(s.ColumnInt64(2)); | |
| 203 } | |
| 204 else | |
| 205 { | |
| 206 // Should never happen | |
| 207 throw std::runtime_error("Internal error"); | |
| 208 } | |
| 209 } | |
| 210 } | |
| 211 | |
| 212 | |
| 213 | |
| 214 void CacheManager::EnsureQuota(int bundleIndex, | |
| 215 const BundleQuota& quota) | |
| 216 { | |
| 217 // Remove the cached files that exceed the quota | |
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218 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 219 transaction->Begin(); |
| 220 | |
| 221 Bundle bundle = GetBundle(bundleIndex); | |
| 222 | |
| 223 std::list<std::string> toRemove; | |
| 224 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 225 | |
| 226 transaction->Commit(); | |
| 227 for (std::list<std::string>::const_iterator | |
| 197 | 228 it = toRemove.begin(); it != toRemove.end(); ++it) |
| 0 | 229 { |
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230 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); |
| 0 | 231 } |
| 232 | |
| 233 pimpl_->bundles_[bundleIndex] = bundle; | |
| 234 } | |
| 235 | |
| 236 | |
| 237 | |
| 238 void CacheManager::ReadBundleStatistics() | |
| 239 { | |
| 240 pimpl_->bundles_.clear(); | |
| 241 | |
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242 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); |
| 0 | 243 while (s.Step()) |
| 244 { | |
| 245 int index = s.ColumnInt(0); | |
| 246 Bundle bundle(static_cast<uint32_t>(s.ColumnInt(1)), | |
| 247 static_cast<uint64_t>(s.ColumnInt64(2))); | |
| 248 pimpl_->bundles_[index] = bundle; | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 | |
| 253 | |
| 254 void CacheManager::SanityCheck() | |
| 255 { | |
| 256 if (!pimpl_->sanityCheck_) | |
| 257 { | |
| 258 return; | |
| 259 } | |
| 260 | |
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261 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT bundle,COUNT(*),SUM(fileSize) FROM Cache GROUP BY bundle"); |
| 0 | 262 while (s.Step()) |
| 263 { | |
| 264 const Bundle& bundle = GetBundle(s.ColumnInt(0)); | |
| 265 if (bundle.GetCount() != static_cast<uint32_t>(s.ColumnInt(1)) || | |
| 266 bundle.GetSpace() != static_cast<uint64_t>(s.ColumnInt64(2))) | |
| 267 { | |
| 268 throw std::runtime_error("SANITY ERROR in cache: " + boost::lexical_cast<std::string>(bundle.GetCount()) | |
| 269 + "/" + boost::lexical_cast<std::string>(bundle.GetSpace()) | |
| 270 + " vs " + boost::lexical_cast<std::string>(s.ColumnInt(1)) + "/" | |
| 271 + boost::lexical_cast<std::string>(s.ColumnInt64(2))); | |
| 272 } | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 | |
| 277 | |
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278 CacheManager::CacheManager(OrthancPluginContext* context, |
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279 Orthanc::SQLite::Connection& db, |
| 0 | 280 Orthanc::FilesystemStorage& storage) : |
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281 pimpl_(new PImpl(context, db, storage)) |
| 0 | 282 { |
| 283 Open(); | |
| 284 ReadBundleStatistics(); | |
| 285 } | |
| 286 | |
| 287 | |
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288 OrthancPluginContext* CacheManager::GetPluginContext() const |
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289 { |
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290 return pimpl_->context_; |
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291 } |
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292 |
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293 |
| 0 | 294 void CacheManager::SetSanityCheckEnabled(bool enabled) |
| 295 { | |
| 296 pimpl_->sanityCheck_ = enabled; | |
| 297 } | |
| 298 | |
| 299 | |
| 300 void CacheManager::Open() | |
| 301 { | |
| 302 if (!pimpl_->db_.DoesTableExist("Cache")) | |
| 303 { | |
| 304 pimpl_->db_.Execute("CREATE TABLE Cache(seq INTEGER PRIMARY KEY, bundle INTEGER, item TEXT, fileUuid TEXT, fileSize INT);"); | |
| 305 pimpl_->db_.Execute("CREATE INDEX CacheBundles ON Cache(bundle);"); | |
| 306 pimpl_->db_.Execute("CREATE INDEX CacheIndex ON Cache(bundle, item);"); | |
| 307 } | |
| 308 | |
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309 if (!pimpl_->db_.DoesTableExist("CacheProperties")) |
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310 { |
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311 pimpl_->db_.Execute("CREATE TABLE CacheProperties(property INTEGER PRIMARY KEY, value TEXT);"); |
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312 } |
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313 |
| 0 | 314 // Performance tuning of SQLite with PRAGMAs |
| 315 // http://www.sqlite.org/pragma.html | |
| 316 pimpl_->db_.Execute("PRAGMA SYNCHRONOUS=OFF;"); | |
| 317 pimpl_->db_.Execute("PRAGMA JOURNAL_MODE=WAL;"); | |
| 318 pimpl_->db_.Execute("PRAGMA LOCKING_MODE=EXCLUSIVE;"); | |
| 319 } | |
| 320 | |
| 321 | |
| 322 void CacheManager::Store(int bundleIndex, | |
| 323 const std::string& item, | |
| 324 const std::string& content) | |
| 325 { | |
| 326 SanityCheck(); | |
| 327 | |
| 328 const BundleQuota quota = GetBundleQuota(bundleIndex); | |
| 329 | |
| 330 if (quota.GetMaxSpace() > 0 && | |
| 331 content.size() > quota.GetMaxSpace()) | |
| 332 { | |
| 333 // Cannot store such a large instance into the cache, forget about it | |
| 334 return; | |
| 335 } | |
| 336 | |
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337 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 338 transaction->Begin(); |
| 339 | |
| 340 Bundle bundle = GetBundle(bundleIndex); | |
| 341 | |
| 342 std::list<std::string> toRemove; | |
| 343 bundle.Add(content.size()); | |
| 344 MakeRoom(bundle, toRemove, bundleIndex, quota); | |
| 345 | |
| 346 // Store the cached content on the disk | |
| 347 const char* data = content.size() ? &content[0] : NULL; | |
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348 std::string uuid = Orthanc::Toolbox::GenerateUuid(); |
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349 pimpl_->storage_.Create(uuid, data, content.size(), Orthanc::FileContentType_Unknown); |
| 0 | 350 |
| 351 // Remove the previous cached value. This might happen if the same | |
| 352 // item is accessed very quickly twice: Another factory could have | |
| 353 // been cached a value before the check for existence in Access(). | |
| 354 { | |
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355 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 356 s.BindInt(0, bundleIndex); |
| 357 s.BindString(1, item); | |
| 358 if (s.Step()) | |
| 359 { | |
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360 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 361 t.BindInt64(0, s.ColumnInt64(0)); |
| 362 t.Run(); | |
| 363 | |
| 364 toRemove.push_back(s.ColumnString(1)); | |
| 365 bundle.Remove(s.ColumnInt64(2)); | |
| 366 } | |
| 367 } | |
| 368 | |
| 369 { | |
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370 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); |
| 0 | 371 s.BindInt(0, bundleIndex); |
| 372 s.BindString(1, item); | |
| 373 s.BindString(2, uuid); | |
| 374 s.BindInt64(3, content.size()); | |
| 375 | |
| 376 if (!s.Run()) | |
| 377 { | |
| 197 | 378 // Error: Remove the stored file |
| 379 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); | |
| 0 | 380 } |
| 197 | 381 else |
| 382 { | |
| 383 transaction->Commit(); | |
| 0 | 384 |
| 197 | 385 pimpl_->bundles_[bundleIndex] = bundle; |
| 0 | 386 |
| 197 | 387 for (std::list<std::string>::const_iterator |
| 388 it = toRemove.begin(); it != toRemove.end(); ++it) | |
| 389 { | |
| 390 pimpl_->storage_.Remove(*it, Orthanc::FileContentType_Unknown); | |
| 391 } | |
| 0 | 392 } |
| 393 } | |
| 394 | |
| 395 SanityCheck(); | |
| 396 } | |
| 397 | |
| 398 | |
| 399 | |
| 400 bool CacheManager::LocateInCache(std::string& uuid, | |
| 401 uint64_t& size, | |
| 402 int bundle, | |
| 403 const std::string& item) | |
| 404 { | |
| 405 SanityCheck(); | |
| 406 | |
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407 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 408 transaction->Begin(); |
| 409 | |
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410 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 411 s.BindInt(0, bundle); |
| 412 s.BindString(1, item); | |
| 413 if (!s.Step()) | |
| 414 { | |
| 415 return false; | |
| 416 } | |
| 417 | |
| 418 int64_t seq = s.ColumnInt64(0); | |
| 419 uuid = s.ColumnString(1); | |
| 420 size = s.ColumnInt64(2); | |
| 421 | |
| 422 // Touch the cache to fulfill the LRU scheme. | |
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423 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 424 t.BindInt64(0, seq); |
| 425 if (t.Run()) | |
| 426 { | |
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427 Orthanc::SQLite::Statement u(pimpl_->db_, SQLITE_FROM_HERE, "INSERT INTO Cache VALUES(NULL, ?, ?, ?, ?)"); |
| 0 | 428 u.BindInt(0, bundle); |
| 429 u.BindString(1, item); | |
| 430 u.BindString(2, uuid); | |
| 431 u.BindInt64(3, size); | |
| 432 if (u.Run()) | |
| 433 { | |
| 434 // Everything was OK. Commit the changes to the cache. | |
| 435 transaction->Commit(); | |
| 436 return true; | |
| 437 } | |
| 438 } | |
| 439 | |
| 440 return false; | |
| 441 } | |
| 442 | |
| 443 | |
| 444 bool CacheManager::IsCached(int bundle, | |
| 445 const std::string& item) | |
| 446 { | |
| 447 std::string uuid; | |
| 448 uint64_t size; | |
| 449 return LocateInCache(uuid, size, bundle, item); | |
| 450 } | |
| 451 | |
| 452 | |
| 453 bool CacheManager::Access(std::string& content, | |
| 454 int bundle, | |
| 455 const std::string& item) | |
| 456 { | |
| 457 std::string uuid; | |
| 458 uint64_t size; | |
| 459 if (!LocateInCache(uuid, size, bundle, item)) | |
| 460 { | |
| 461 return false; | |
| 462 } | |
| 463 | |
| 464 bool ok; | |
| 465 try | |
| 466 { | |
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467 #if defined(ORTHANC_FRAMEWORK_VERSION_IS_ABOVE) && ORTHANC_FRAMEWORK_VERSION_IS_ABOVE(1, 9, 0) |
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468 std::unique_ptr<Orthanc::IMemoryBuffer> buffer( |
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469 pimpl_->storage_.Read(uuid, Orthanc::FileContentType_Unknown)); |
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470 buffer->MoveToString(content); |
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471 #else |
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472 pimpl_->storage_.Read(content, uuid, Orthanc::FileContentType_Unknown); |
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473 #endif |
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474 |
| 0 | 475 ok = (content.size() == size); |
| 476 } | |
| 477 catch (std::runtime_error&) | |
| 478 { | |
| 479 ok = false; | |
| 480 } | |
| 481 | |
| 482 if (ok) | |
| 483 { | |
| 484 return true; | |
| 485 } | |
| 486 else | |
| 487 { | |
| 488 throw std::runtime_error("Error in the filesystem"); | |
| 489 } | |
| 490 } | |
| 491 | |
| 492 | |
| 493 void CacheManager::Invalidate(int bundleIndex, | |
| 494 const std::string& item) | |
| 495 { | |
| 496 SanityCheck(); | |
| 497 | |
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498 std::unique_ptr<Orthanc::SQLite::Transaction> transaction(new Orthanc::SQLite::Transaction(pimpl_->db_)); |
| 0 | 499 transaction->Begin(); |
| 500 | |
| 501 Bundle bundle = GetBundle(bundleIndex); | |
| 502 | |
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503 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT seq, fileUuid, fileSize FROM Cache WHERE bundle=? AND item=?"); |
| 0 | 504 s.BindInt(0, bundleIndex); |
| 505 s.BindString(1, item); | |
| 506 if (s.Step()) | |
| 507 { | |
| 508 int64_t seq = s.ColumnInt64(0); | |
| 509 const std::string uuid = s.ColumnString(1); | |
| 510 uint64_t expectedSize = s.ColumnInt64(2); | |
| 511 bundle.Remove(expectedSize); | |
| 512 | |
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513 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE seq=?"); |
| 0 | 514 t.BindInt64(0, seq); |
| 515 if (t.Run()) | |
| 516 { | |
| 517 transaction->Commit(); | |
| 518 pimpl_->bundles_[bundleIndex] = bundle; | |
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519 pimpl_->storage_.Remove(uuid, Orthanc::FileContentType_Unknown); |
| 0 | 520 } |
| 521 } | |
| 522 } | |
| 523 | |
| 524 | |
| 525 | |
| 526 void CacheManager::SetBundleQuota(int bundle, | |
| 527 uint32_t maxCount, | |
| 528 uint64_t maxSpace) | |
| 529 { | |
| 530 SanityCheck(); | |
| 531 | |
| 532 const BundleQuota quota(maxCount, maxSpace); | |
| 533 EnsureQuota(bundle, quota); | |
| 534 pimpl_->quotas_[bundle] = quota; | |
| 535 | |
| 536 SanityCheck(); | |
| 537 } | |
| 538 | |
| 539 void CacheManager::SetDefaultQuota(uint32_t maxCount, | |
| 540 uint64_t maxSpace) | |
| 541 { | |
| 542 SanityCheck(); | |
| 543 | |
| 544 pimpl_->defaultQuota_ = BundleQuota(maxCount, maxSpace); | |
| 545 | |
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546 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT DISTINCT bundle FROM Cache"); |
| 0 | 547 while (s.Step()) |
| 548 { | |
| 549 EnsureQuota(s.ColumnInt(0), pimpl_->defaultQuota_); | |
| 550 } | |
| 551 | |
| 552 SanityCheck(); | |
| 553 } | |
| 554 | |
| 555 | |
| 556 void CacheManager::Clear() | |
| 557 { | |
| 558 SanityCheck(); | |
| 559 | |
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560 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache"); |
| 0 | 561 while (s.Step()) |
| 562 { | |
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563 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 564 } |
| 565 | |
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566 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache"); |
| 0 | 567 t.Run(); |
| 568 | |
| 569 ReadBundleStatistics(); | |
| 570 SanityCheck(); | |
| 571 } | |
| 572 | |
| 573 | |
| 574 | |
| 575 void CacheManager::Clear(int bundle) | |
| 576 { | |
| 577 SanityCheck(); | |
| 578 | |
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579 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, "SELECT fileUuid FROM Cache WHERE bundle=?"); |
| 0 | 580 s.BindInt(0, bundle); |
| 581 while (s.Step()) | |
| 582 { | |
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583 pimpl_->storage_.Remove(s.ColumnString(0), Orthanc::FileContentType_Unknown); |
| 0 | 584 } |
| 585 | |
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586 Orthanc::SQLite::Statement t(pimpl_->db_, SQLITE_FROM_HERE, "DELETE FROM Cache WHERE bundle=?"); |
| 0 | 587 t.BindInt(0, bundle); |
| 588 t.Run(); | |
| 589 | |
| 590 ReadBundleStatistics(); | |
| 591 SanityCheck(); | |
| 592 } | |
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593 |
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594 |
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595 void CacheManager::SetProperty(CacheProperty property, |
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596 const std::string& value) |
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597 { |
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598 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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599 "INSERT OR REPLACE INTO CacheProperties VALUES(?, ?)"); |
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600 s.BindInt(0, property); |
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601 s.BindString(1, value); |
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602 s.Run(); |
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603 } |
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604 |
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605 |
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606 bool CacheManager::LookupProperty(std::string& target, |
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607 CacheProperty property) |
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608 { |
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609 Orthanc::SQLite::Statement s(pimpl_->db_, SQLITE_FROM_HERE, |
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610 "SELECT value FROM CacheProperties WHERE property=?"); |
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611 s.BindInt(0, property); |
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612 |
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613 if (!s.Step()) |
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614 { |
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615 return false; |
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616 } |
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617 else |
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618 { |
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619 target = s.ColumnString(0); |
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620 return true; |
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621 } |
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622 } |
| 0 | 623 } |